diff options
| author | Bradley Grove <bgrove@attotech.com> | 2013-08-23 10:35:45 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-09-03 07:27:58 -0700 |
| commit | 26780d9e12edf45c0b98315de272b1feff5a8e93 (patch) | |
| tree | 2a5a00f53fa007277c9f92ef8c99b85d99d3b633 /drivers/scsi/esas2r | |
| parent | 127be355285d14b483da0478a33302a680204144 (diff) | |
| download | linux-26780d9e12edf45c0b98315de272b1feff5a8e93.tar.bz2 | |
[SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver
This is a new driver for ATTO Technology's ExpressSAS series of hardware RAID
adapters. It supports the following adapters:
- ExpressSAS R60F
- ExpressSAS R680
- ExpressSAS R608
- ExpressSAS R644
Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/esas2r')
| -rw-r--r-- | drivers/scsi/esas2r/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/Makefile | 5 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/atioctl.h | 1254 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/atvda.h | 1319 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r.h | 1441 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_disc.c | 1189 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_flash.c | 1512 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_init.c | 1773 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_int.c | 941 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_io.c | 880 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_ioctl.c | 2110 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_log.c | 254 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_log.h | 118 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_main.c | 2032 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_targdb.c | 306 | ||||
| -rw-r--r-- | drivers/scsi/esas2r/esas2r_vda.c | 521 |
16 files changed, 15660 insertions, 0 deletions
diff --git a/drivers/scsi/esas2r/Kconfig b/drivers/scsi/esas2r/Kconfig new file mode 100644 index 000000000000..78fdbfd9b4b7 --- /dev/null +++ b/drivers/scsi/esas2r/Kconfig @@ -0,0 +1,5 @@ +config SCSI_ESAS2R + tristate "ATTO Technology's ExpressSAS RAID adapter driver" + depends on PCI && SCSI + ---help--- + This driver supports the ATTO ExpressSAS R6xx SAS/SATA RAID controllers. diff --git a/drivers/scsi/esas2r/Makefile b/drivers/scsi/esas2r/Makefile new file mode 100644 index 000000000000..c77160b8c8bd --- /dev/null +++ b/drivers/scsi/esas2r/Makefile @@ -0,0 +1,5 @@ +obj-$(CONFIG_SCSI_ESAS2R) += esas2r.o + +esas2r-objs := esas2r_log.o esas2r_disc.o esas2r_flash.o esas2r_init.o \ + esas2r_int.o esas2r_io.o esas2r_ioctl.o esas2r_targdb.o \ + esas2r_vda.o esas2r_main.o diff --git a/drivers/scsi/esas2r/atioctl.h b/drivers/scsi/esas2r/atioctl.h new file mode 100644 index 000000000000..4aca3d52c851 --- /dev/null +++ b/drivers/scsi/esas2r/atioctl.h @@ -0,0 +1,1254 @@ +/* linux/drivers/scsi/esas2r/atioctl.h + * ATTO IOCTL Handling + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + +#include "atvda.h" + +#ifndef ATIOCTL_H +#define ATIOCTL_H + +#define EXPRESS_IOCTL_SIGNATURE "Express" +#define EXPRESS_IOCTL_SIGNATURE_SIZE 8 + +/* structure definitions for IOCTls */ + +struct __packed atto_express_ioctl_header { + u8 signature[EXPRESS_IOCTL_SIGNATURE_SIZE]; + u8 return_code; + +#define IOCTL_SUCCESS 0 +#define IOCTL_ERR_INVCMD 101 +#define IOCTL_INIT_FAILED 102 +#define IOCTL_NOT_IMPLEMENTED 103 +#define IOCTL_BAD_CHANNEL 104 +#define IOCTL_TARGET_OVERRUN 105 +#define IOCTL_TARGET_NOT_ENABLED 106 +#define IOCTL_BAD_FLASH_IMGTYPE 107 +#define IOCTL_OUT_OF_RESOURCES 108 +#define IOCTL_GENERAL_ERROR 109 +#define IOCTL_INVALID_PARAM 110 + + u8 channel; + u8 retries; + u8 pad[5]; +}; + +/* + * NOTE - if channel == 0xFF, the request is + * handled on the adapter it came in on. + */ +#define MAX_NODE_NAMES 256 + +struct __packed atto_firmware_rw_request { + u8 function; + #define FUNC_FW_DOWNLOAD 0x09 + #define FUNC_FW_UPLOAD 0x12 + + u8 img_type; + #define FW_IMG_FW 0x01 + #define FW_IMG_BIOS 0x02 + #define FW_IMG_NVR 0x03 + #define FW_IMG_RAW 0x04 + #define FW_IMG_FM_API 0x05 + #define FW_IMG_FS_API 0x06 + + u8 pad[2]; + u32 img_offset; + u32 img_size; + u8 image[0x80000]; +}; + +struct __packed atto_param_rw_request { + u16 code; + char data_buffer[512]; +}; + +#define MAX_CHANNEL 256 + +struct __packed atto_channel_list { + u32 num_channels; + u8 channel[MAX_CHANNEL]; +}; + +struct __packed atto_channel_info { + u8 major_rev; + u8 minor_rev; + u8 IRQ; + u8 revision_id; + u8 pci_bus; + u8 pci_dev_func; + u8 core_rev; + u8 host_no; + u16 device_id; + u16 vendor_id; + u16 ven_dev_id; + u8 pad[3]; + u32 hbaapi_rev; +}; + +/* + * CSMI control codes + * class independent + */ +#define CSMI_CC_GET_DRVR_INFO 1 +#define CSMI_CC_GET_CNTLR_CFG 2 +#define CSMI_CC_GET_CNTLR_STS 3 +#define CSMI_CC_FW_DOWNLOAD 4 + +/* RAID class */ +#define CSMI_CC_GET_RAID_INFO 10 +#define CSMI_CC_GET_RAID_CFG 11 + +/* HBA class */ +#define CSMI_CC_GET_PHY_INFO 20 +#define CSMI_CC_SET_PHY_INFO 21 +#define CSMI_CC_GET_LINK_ERRORS 22 +#define CSMI_CC_SMP_PASSTHRU 23 +#define CSMI_CC_SSP_PASSTHRU 24 +#define CSMI_CC_STP_PASSTHRU 25 +#define CSMI_CC_GET_SATA_SIG 26 +#define CSMI_CC_GET_SCSI_ADDR 27 +#define CSMI_CC_GET_DEV_ADDR 28 +#define CSMI_CC_TASK_MGT 29 +#define CSMI_CC_GET_CONN_INFO 30 + +/* PHY class */ +#define CSMI_CC_PHY_CTRL 60 + +/* + * CSMI status codes + * class independent + */ +#define CSMI_STS_SUCCESS 0 +#define CSMI_STS_FAILED 1 +#define CSMI_STS_BAD_CTRL_CODE 2 +#define CSMI_STS_INV_PARAM 3 +#define CSMI_STS_WRITE_ATTEMPTED 4 + +/* RAID class */ +#define CSMI_STS_INV_RAID_SET 1000 + +/* HBA class */ +#define CSMI_STS_PHY_CHANGED CSMI_STS_SUCCESS +#define CSMI_STS_PHY_UNCHANGEABLE 2000 +#define CSMI_STS_INV_LINK_RATE 2001 +#define CSMI_STS_INV_PHY 2002 +#define CSMI_STS_INV_PHY_FOR_PORT 2003 +#define CSMI_STS_PHY_UNSELECTABLE 2004 +#define CSMI_STS_SELECT_PHY_OR_PORT 2005 +#define CSMI_STS_INV_PORT 2006 +#define CSMI_STS_PORT_UNSELECTABLE 2007 +#define CSMI_STS_CONNECTION_FAILED 2008 +#define CSMI_STS_NO_SATA_DEV 2009 +#define CSMI_STS_NO_SATA_SIGNATURE 2010 +#define CSMI_STS_SCSI_EMULATION 2011 +#define CSMI_STS_NOT_AN_END_DEV 2012 +#define CSMI_STS_NO_SCSI_ADDR 2013 +#define CSMI_STS_NO_DEV_ADDR 2014 + +/* CSMI class independent structures */ +struct atto_csmi_get_driver_info { + char name[81]; + char description[81]; + u16 major_rev; + u16 minor_rev; + u16 build_rev; + u16 release_rev; + u16 csmi_major_rev; + u16 csmi_minor_rev; + #define CSMI_MAJOR_REV_0_81 0 + #define CSMI_MINOR_REV_0_81 81 + + #define CSMI_MAJOR_REV CSMI_MAJOR_REV_0_81 + #define CSMI_MINOR_REV CSMI_MINOR_REV_0_81 +}; + +struct atto_csmi_get_pci_bus_addr { + u8 bus_num; + u8 device_num; + u8 function_num; + u8 reserved; +}; + +struct atto_csmi_get_cntlr_cfg { + u32 base_io_addr; + + struct { + u32 base_memaddr_lo; + u32 base_memaddr_hi; + }; + + u32 board_id; + u16 slot_num; + #define CSMI_SLOT_NUM_UNKNOWN 0xFFFF + + u8 cntlr_class; + #define CSMI_CNTLR_CLASS_HBA 5 + + u8 io_bus_type; + #define CSMI_BUS_TYPE_PCI 3 + #define CSMI_BUS_TYPE_PCMCIA 4 + + union { + struct atto_csmi_get_pci_bus_addr pci_addr; + u8 reserved[32]; + }; + + char serial_num[81]; + u16 major_rev; + u16 minor_rev; + u16 build_rev; + u16 release_rev; + u16 bios_major_rev; + u16 bios_minor_rev; + u16 bios_build_rev; + u16 bios_release_rev; + u32 cntlr_flags; + #define CSMI_CNTLRF_SAS_HBA 0x00000001 + #define CSMI_CNTLRF_SAS_RAID 0x00000002 + #define CSMI_CNTLRF_SATA_HBA 0x00000004 + #define CSMI_CNTLRF_SATA_RAID 0x00000008 + #define CSMI_CNTLRF_FWD_SUPPORT 0x00010000 + #define CSMI_CNTLRF_FWD_ONLINE 0x00020000 + #define CSMI_CNTLRF_FWD_SRESET 0x00040000 + #define CSMI_CNTLRF_FWD_HRESET 0x00080000 + #define CSMI_CNTLRF_FWD_RROM 0x00100000 + + u16 rrom_major_rev; + u16 rrom_minor_rev; + u16 rrom_build_rev; + u16 rrom_release_rev; + u16 rrom_biosmajor_rev; + u16 rrom_biosminor_rev; + u16 rrom_biosbuild_rev; + u16 rrom_biosrelease_rev; + u8 reserved2[7]; +}; + +struct atto_csmi_get_cntlr_sts { + u32 status; + #define CSMI_CNTLR_STS_GOOD 1 + #define CSMI_CNTLR_STS_FAILED 2 + #define CSMI_CNTLR_STS_OFFLINE 3 + #define CSMI_CNTLR_STS_POWEROFF 4 + + u32 offline_reason; + #define CSMI_OFFLINE_NO_REASON 0 + #define CSMI_OFFLINE_INITIALIZING 1 + #define CSMI_OFFLINE_BUS_DEGRADED 2 + #define CSMI_OFFLINE_BUS_FAILURE 3 + + u8 reserved[28]; +}; + +struct atto_csmi_fw_download { + u32 buffer_len; + u32 download_flags; + #define CSMI_FWDF_VALIDATE 0x00000001 + #define CSMI_FWDF_SOFT_RESET 0x00000002 + #define CSMI_FWDF_HARD_RESET 0x00000004 + + u8 reserved[32]; + u16 status; + #define CSMI_FWD_STS_SUCCESS 0 + #define CSMI_FWD_STS_FAILED 1 + #define CSMI_FWD_STS_USING_RROM 2 + #define CSMI_FWD_STS_REJECT 3 + #define CSMI_FWD_STS_DOWNREV 4 + + u16 severity; + #define CSMI_FWD_SEV_INFO 0 + #define CSMI_FWD_SEV_WARNING 1 + #define CSMI_FWD_SEV_ERROR 2 + #define CSMI_FWD_SEV_FATAL 3 + +}; + +/* CSMI RAID class structures */ +struct atto_csmi_get_raid_info { + u32 num_raid_sets; + u32 max_drivesper_set; + u8 reserved[92]; +}; + +struct atto_csmi_raid_drives { + char model[40]; + char firmware[8]; + char serial_num[40]; + u8 sas_addr[8]; + u8 lun[8]; + u8 drive_sts; + #define CSMI_DRV_STS_OK 0 + #define CSMI_DRV_STS_REBUILDING 1 + #define CSMI_DRV_STS_FAILED 2 + #define CSMI_DRV_STS_DEGRADED 3 + + u8 drive_usage; + #define CSMI_DRV_USE_NOT_USED 0 + #define CSMI_DRV_USE_MEMBER 1 + #define CSMI_DRV_USE_SPARE 2 + + u8 reserved[30]; /* spec says 22 */ +}; + +struct atto_csmi_get_raid_cfg { + u32 raid_set_index; + u32 capacity; + u32 stripe_size; + u8 raid_type; + u8 status; + u8 information; + u8 drive_cnt; + u8 reserved[20]; + + struct atto_csmi_raid_drives drives[1]; +}; + +/* CSMI HBA class structures */ +struct atto_csmi_phy_entity { + u8 ident_frame[0x1C]; + u8 port_id; + u8 neg_link_rate; + u8 min_link_rate; + u8 max_link_rate; + u8 phy_change_cnt; + u8 auto_discover; + #define CSMI_DISC_NOT_SUPPORTED 0x00 + #define CSMI_DISC_NOT_STARTED 0x01 + #define CSMI_DISC_IN_PROGRESS 0x02 + #define CSMI_DISC_COMPLETE 0x03 + #define CSMI_DISC_ERROR 0x04 + + u8 reserved[2]; + u8 attach_ident_frame[0x1C]; +}; + +struct atto_csmi_get_phy_info { + u8 number_of_phys; + u8 reserved[3]; + struct atto_csmi_phy_entity + phy[32]; +}; + +struct atto_csmi_set_phy_info { + u8 phy_id; + u8 neg_link_rate; + #define CSMI_NEG_RATE_NEGOTIATE 0x00 + #define CSMI_NEG_RATE_PHY_DIS 0x01 + + u8 prog_minlink_rate; + u8 prog_maxlink_rate; + u8 signal_class; + #define CSMI_SIG_CLASS_UNKNOWN 0x00 + #define CSMI_SIG_CLASS_DIRECT 0x01 + #define CSMI_SIG_CLASS_SERVER 0x02 + #define CSMI_SIG_CLASS_ENCLOSURE 0x03 + + u8 reserved[3]; +}; + +struct atto_csmi_get_link_errors { + u8 phy_id; + u8 reset_cnts; + #define CSMI_RESET_CNTS_NO 0x00 + #define CSMI_RESET_CNTS_YES 0x01 + + u8 reserved[2]; + u32 inv_dw_cnt; + u32 disp_err_cnt; + u32 loss_ofdw_sync_cnt; + u32 phy_reseterr_cnt; + + /* + * The following field has been added by ATTO for ease of + * implementation of additional statistics. Drivers must validate + * the length of the IOCTL payload prior to filling them in so CSMI + * complaint applications function correctly. + */ + + u32 crc_err_cnt; +}; + +struct atto_csmi_smp_passthru { + u8 phy_id; + u8 port_id; + u8 conn_rate; + u8 reserved; + u8 dest_sas_addr[8]; + u32 req_len; + u8 smp_req[1020]; + u8 conn_sts; + u8 reserved2[3]; + u32 rsp_len; + u8 smp_rsp[1020]; +}; + +struct atto_csmi_ssp_passthru_sts { + u8 conn_sts; + u8 reserved[3]; + u8 data_present; + u8 status; + u16 rsp_length; + u8 rsp[256]; + u32 data_bytes; +}; + +struct atto_csmi_ssp_passthru { + u8 phy_id; + u8 port_id; + u8 conn_rate; + u8 reserved; + u8 dest_sas_addr[8]; + u8 lun[8]; + u8 cdb_len; + u8 add_cdb_len; + u8 reserved2[2]; + u8 cdb[16]; + u32 flags; + #define CSMI_SSPF_DD_READ 0x00000001 + #define CSMI_SSPF_DD_WRITE 0x00000002 + #define CSMI_SSPF_DD_UNSPECIFIED 0x00000004 + #define CSMI_SSPF_TA_SIMPLE 0x00000000 + #define CSMI_SSPF_TA_HEAD_OF_Q 0x00000010 + #define CSMI_SSPF_TA_ORDERED 0x00000020 + #define CSMI_SSPF_TA_ACA 0x00000040 + + u8 add_cdb[24]; + u32 data_len; + + struct atto_csmi_ssp_passthru_sts sts; +}; + +struct atto_csmi_stp_passthru_sts { + u8 conn_sts; + u8 reserved[3]; + u8 sts_fis[20]; + u32 scr[16]; + u32 data_bytes; +}; + +struct atto_csmi_stp_passthru { + u8 phy_id; + u8 port_id; + u8 conn_rate; + u8 reserved; + u8 dest_sas_addr[8]; + u8 reserved2[4]; + u8 command_fis[20]; + u32 flags; + #define CSMI_STPF_DD_READ 0x00000001 + #define CSMI_STPF_DD_WRITE 0x00000002 + #define CSMI_STPF_DD_UNSPECIFIED 0x00000004 + #define CSMI_STPF_PIO 0x00000010 + #define CSMI_STPF_DMA 0x00000020 + #define CSMI_STPF_PACKET 0x00000040 + #define CSMI_STPF_DMA_QUEUED 0x00000080 + #define CSMI_STPF_EXECUTE_DIAG 0x00000100 + #define CSMI_STPF_RESET_DEVICE 0x00000200 + + u32 data_len; + + struct atto_csmi_stp_passthru_sts sts; +}; + +struct atto_csmi_get_sata_sig { + u8 phy_id; + u8 reserved[3]; + u8 reg_dth_fis[20]; +}; + +struct atto_csmi_get_scsi_addr { + u8 sas_addr[8]; + u8 sas_lun[8]; + u8 host_index; + u8 path_id; + u8 target_id; + u8 lun; +}; + +struct atto_csmi_get_dev_addr { + u8 host_index; + u8 path_id; + u8 target_id; + u8 lun; + u8 sas_addr[8]; + u8 sas_lun[8]; +}; + +struct atto_csmi_task_mgmt { + u8 host_index; + u8 path_id; + u8 target_id; + u8 lun; + u32 flags; + #define CSMI_TMF_TASK_IU 0x00000001 + #define CSMI_TMF_HARD_RST 0x00000002 + #define CSMI_TMF_SUPPRESS_RSLT 0x00000004 + + u32 queue_tag; + u32 reserved; + u8 task_mgt_func; + u8 reserved2[7]; + u32 information; + #define CSMI_TM_INFO_TEST 1 + #define CSMI_TM_INFO_EXCEEDED 2 + #define CSMI_TM_INFO_DEMAND 3 + #define CSMI_TM_INFO_TRIGGER 4 + + struct atto_csmi_ssp_passthru_sts sts; + +}; + +struct atto_csmi_get_conn_info { + u32 pinout; + #define CSMI_CON_UNKNOWN 0x00000001 + #define CSMI_CON_SFF_8482 0x00000002 + #define CSMI_CON_SFF_8470_LANE_1 0x00000100 + #define CSMI_CON_SFF_8470_LANE_2 0x00000200 + #define CSMI_CON_SFF_8470_LANE_3 0x00000400 + #define CSMI_CON_SFF_8470_LANE_4 0x00000800 + #define CSMI_CON_SFF_8484_LANE_1 0x00010000 + #define CSMI_CON_SFF_8484_LANE_2 0x00020000 + #define CSMI_CON_SFF_8484_LANE_3 0x00040000 + #define CSMI_CON_SFF_8484_LANE_4 0x00080000 + + u8 connector[16]; + u8 location; + #define CSMI_CON_INTERNAL 0x02 + #define CSMI_CON_EXTERNAL 0x04 + #define CSMI_CON_SWITCHABLE 0x08 + #define CSMI_CON_AUTO 0x10 + + u8 reserved[15]; +}; + +/* CSMI PHY class structures */ +struct atto_csmi_character { + u8 type_flags; + #define CSMI_CTF_POS_DISP 0x01 + #define CSMI_CTF_NEG_DISP 0x02 + #define CSMI_CTF_CTRL_CHAR 0x04 + + u8 value; +}; + +struct atto_csmi_pc_ctrl { + u8 type; + #define CSMI_PC_TYPE_UNDEFINED 0x00 + #define CSMI_PC_TYPE_SATA 0x01 + #define CSMI_PC_TYPE_SAS 0x02 + u8 rate; + u8 reserved[6]; + u32 vendor_unique[8]; + u32 tx_flags; + #define CSMI_PC_TXF_PREEMP_DIS 0x00000001 + + signed char tx_amplitude; + signed char tx_preemphasis; + signed char tx_slew_rate; + signed char tx_reserved[13]; + u8 tx_vendor_unique[64]; + u32 rx_flags; + #define CSMI_PC_RXF_EQ_DIS 0x00000001 + + signed char rx_threshold; + signed char rx_equalization_gain; + signed char rx_reserved[14]; + u8 rx_vendor_unique[64]; + u32 pattern_flags; + #define CSMI_PC_PATF_FIXED 0x00000001 + #define CSMI_PC_PATF_DIS_SCR 0x00000002 + #define CSMI_PC_PATF_DIS_ALIGN 0x00000004 + #define CSMI_PC_PATF_DIS_SSC 0x00000008 + + u8 fixed_pattern; + #define CSMI_PC_FP_CJPAT 0x00000001 + #define CSMI_PC_FP_ALIGN 0x00000002 + + u8 user_pattern_len; + u8 pattern_reserved[6]; + + struct atto_csmi_character user_pattern_buffer[16]; +}; + +struct atto_csmi_phy_ctrl { + u32 function; + #define CSMI_PC_FUNC_GET_SETUP 0x00000100 + + u8 phy_id; + u16 len_of_cntl; + u8 num_of_cntls; + u8 reserved[4]; + u32 link_flags; + #define CSMI_PHY_ACTIVATE_CTRL 0x00000001 + #define CSMI_PHY_UPD_SPINUP_RATE 0x00000002 + #define CSMI_PHY_AUTO_COMWAKE 0x00000004 + + u8 spinup_rate; + u8 link_reserved[7]; + u32 vendor_unique[8]; + + struct atto_csmi_pc_ctrl control[1]; +}; + +union atto_ioctl_csmi { + struct atto_csmi_get_driver_info drvr_info; + struct atto_csmi_get_cntlr_cfg cntlr_cfg; + struct atto_csmi_get_cntlr_sts cntlr_sts; + struct atto_csmi_fw_download fw_dwnld; + struct atto_csmi_get_raid_info raid_info; + struct atto_csmi_get_raid_cfg raid_cfg; + struct atto_csmi_get_phy_info get_phy_info; + struct atto_csmi_set_phy_info set_phy_info; + struct atto_csmi_get_link_errors link_errs; + struct atto_csmi_smp_passthru smp_pass_thru; + struct atto_csmi_ssp_passthru ssp_pass_thru; + struct atto_csmi_stp_passthru stp_pass_thru; + struct atto_csmi_task_mgmt tsk_mgt; + struct atto_csmi_get_sata_sig sata_sig; + struct atto_csmi_get_scsi_addr scsi_addr; + struct atto_csmi_get_dev_addr dev_addr; + struct atto_csmi_get_conn_info conn_info[32]; + struct atto_csmi_phy_ctrl phy_ctrl; +}; + +struct atto_csmi { + u32 control_code; + u32 status; + union atto_ioctl_csmi data; +}; + +struct atto_module_info { + void *adapter; + void *pci_dev; + void *scsi_host; + unsigned short host_no; + union { + struct { + u64 node_name; + u64 port_name; + }; + u64 sas_addr; + }; +}; + +#define ATTO_FUNC_GET_ADAP_INFO 0x00 +#define ATTO_VER_GET_ADAP_INFO0 0 +#define ATTO_VER_GET_ADAP_INFO ATTO_VER_GET_ADAP_INFO0 + +struct __packed atto_hba_get_adapter_info { + + struct { + u16 vendor_id; + u16 device_id; + u16 ss_vendor_id; + u16 ss_device_id; + u8 class_code[3]; + u8 rev_id; + u8 bus_num; + u8 dev_num; + u8 func_num; + u8 link_width_max; + u8 link_width_curr; + #define ATTO_GAI_PCILW_UNKNOWN 0x00 + + u8 link_speed_max; + u8 link_speed_curr; + #define ATTO_GAI_PCILS_UNKNOWN 0x00 + #define ATTO_GAI_PCILS_GEN1 0x01 + #define ATTO_GAI_PCILS_GEN2 0x02 + #define ATTO_GAI_PCILS_GEN3 0x03 + + u8 interrupt_mode; + #define ATTO_GAI_PCIIM_UNKNOWN 0x00 + #define ATTO_GAI_PCIIM_LEGACY 0x01 + #define ATTO_GAI_PCIIM_MSI 0x02 + #define ATTO_GAI_PCIIM_MSIX 0x03 + + u8 msi_vector_cnt; + u8 reserved[19]; + } pci; + + u8 adap_type; + #define ATTO_GAI_AT_EPCIU320 0x00 + #define ATTO_GAI_AT_ESASRAID 0x01 + #define ATTO_GAI_AT_ESASRAID2 0x02 + #define ATTO_GAI_AT_ESASHBA 0x03 + #define ATTO_GAI_AT_ESASHBA2 0x04 + #define ATTO_GAI_AT_CELERITY 0x05 + #define ATTO_GAI_AT_CELERITY8 0x06 + #define ATTO_GAI_AT_FASTFRAME 0x07 + #define ATTO_GAI_AT_ESASHBA3 0x08 + #define ATTO_GAI_AT_CELERITY16 0x09 + #define ATTO_GAI_AT_TLSASHBA 0x0A + #define ATTO_GAI_AT_ESASHBA4 0x0B + + u8 adap_flags; + #define ATTO_GAI_AF_DEGRADED 0x01 + #define ATTO_GAI_AF_SPT_SUPP 0x02 + #define ATTO_GAI_AF_DEVADDR_SUPP 0x04 + #define ATTO_GAI_AF_PHYCTRL_SUPP 0x08 + #define ATTO_GAI_AF_TEST_SUPP 0x10 + #define ATTO_GAI_AF_DIAG_SUPP 0x20 + #define ATTO_GAI_AF_VIRT_SES 0x40 + #define ATTO_GAI_AF_CONN_CTRL 0x80 + + u8 num_ports; + u8 num_phys; + u8 drvr_rev_major; + u8 drvr_rev_minor; + u8 drvr_revsub_minor; + u8 drvr_rev_build; + char drvr_rev_ascii[16]; + char drvr_name[32]; + char firmware_rev[16]; + char flash_rev[16]; + char model_name_short[16]; + char model_name[32]; + u32 num_targets; + u32 num_targsper_bus; + u32 num_lunsper_targ; + u8 num_busses; + u8 num_connectors; + u8 adap_flags2; + #define ATTO_GAI_AF2_FCOE_SUPP 0x01 + #define ATTO_GAI_AF2_NIC_SUPP 0x02 + #define ATTO_GAI_AF2_LOCATE_SUPP 0x04 + #define ATTO_GAI_AF2_ADAP_CTRL_SUPP 0x08 + #define ATTO_GAI_AF2_DEV_INFO_SUPP 0x10 + #define ATTO_GAI_AF2_NPIV_SUPP 0x20 + #define ATTO_GAI_AF2_MP_SUPP 0x40 + + u8 num_temp_sensors; + u32 num_targets_backend; + u32 tunnel_flags; + #define ATTO_GAI_TF_MEM_RW 0x00000001 + #define ATTO_GAI_TF_TRACE 0x00000002 + #define ATTO_GAI_TF_SCSI_PASS_THRU 0x00000004 + #define ATTO_GAI_TF_GET_DEV_ADDR 0x00000008 + #define ATTO_GAI_TF_PHY_CTRL 0x00000010 + #define ATTO_GAI_TF_CONN_CTRL 0x00000020 + #define ATTO_GAI_TF_GET_DEV_INFO 0x00000040 + + u8 reserved3[0x138]; +}; + +#define ATTO_FUNC_GET_ADAP_ADDR 0x01 +#define ATTO_VER_GET_ADAP_ADDR0 0 +#define ATTO_VER_GET_ADAP_ADDR ATTO_VER_GET_ADAP_ADDR0 + +struct __packed atto_hba_get_adapter_address { + + u8 addr_type; + #define ATTO_GAA_AT_PORT 0x00 + #define ATTO_GAA_AT_NODE 0x01 + #define ATTO_GAA_AT_CURR_MAC 0x02 + #define ATTO_GAA_AT_PERM_MAC 0x03 + #define ATTO_GAA_AT_VNIC 0x04 + + u8 port_id; + u16 addr_len; + u8 address[256]; +}; + +#define ATTO_FUNC_MEM_RW 0x02 +#define ATTO_VER_MEM_RW0 0 +#define ATTO_VER_MEM_RW ATTO_VER_MEM_RW0 + +struct __packed atto_hba_memory_read_write { + u8 mem_func; + u8 mem_type; + union { + u8 pci_index; + u8 i2c_dev; + }; + u8 i2c_status; + u32 length; + u64 address; + u8 reserved[48]; + +}; + +#define ATTO_FUNC_TRACE 0x03 +#define ATTO_VER_TRACE0 0 +#define ATTO_VER_TRACE1 1 +#define ATTO_VER_TRACE ATTO_VER_TRACE1 + +struct __packed atto_hba_trace { + u8 trace_func; + #define ATTO_TRC_TF_GET_INFO 0x00 + #define ATTO_TRC_TF_ENABLE 0x01 + #define ATTO_TRC_TF_DISABLE 0x02 + #define ATTO_TRC_TF_SET_MASK 0x03 + #define ATTO_TRC_TF_UPLOAD 0x04 + #define ATTO_TRC_TF_RESET 0x05 + + u8 trace_type; + #define ATTO_TRC_TT_DRIVER 0x00 + #define ATTO_TRC_TT_FWCOREDUMP 0x01 + + u8 reserved[2]; + u32 current_offset; + u32 total_length; + u32 trace_mask; + u8 reserved2[48]; +}; + +#define ATTO_FUNC_SCSI_PASS_THRU 0x04 +#define ATTO_VER_SCSI_PASS_THRU0 0 +#define ATTO_VER_SCSI_PASS_THRU ATTO_VER_SCSI_PASS_THRU0 + +struct __packed atto_hba_scsi_pass_thru { + u8 cdb[32]; + u8 cdb_length; + u8 req_status; + #define ATTO_SPT_RS_SUCCESS 0x00 + #define ATTO_SPT_RS_FAILED 0x01 + #define ATTO_SPT_RS_OVERRUN 0x02 + #define ATTO_SPT_RS_UNDERRUN 0x03 + #define ATTO_SPT_RS_NO_DEVICE 0x04 + #define ATTO_SPT_RS_NO_LUN 0x05 + #define ATTO_SPT_RS_TIMEOUT 0x06 + #define ATTO_SPT_RS_BUS_RESET 0x07 + #define ATTO_SPT_RS_ABORTED 0x08 + #define ATTO_SPT_RS_BUSY 0x09 + #define ATTO_SPT_RS_DEGRADED 0x0A + + u8 scsi_status; + u8 sense_length; + u32 flags; + #define ATTO_SPTF_DATA_IN 0x00000001 + #define ATTO_SPTF_DATA_OUT 0x00000002 + #define ATTO_SPTF_SIMPLE_Q 0x00000004 + #define ATTO_SPTF_HEAD_OF_Q 0x00000008 + #define ATTO_SPTF_ORDERED_Q 0x00000010 + + u32 timeout; + u32 target_id; + u8 lun[8]; + u32 residual_length; + u8 sense_data[0xFC]; + u8 reserved[0x28]; +}; + +#define ATTO_FUNC_GET_DEV_ADDR 0x05 +#define ATTO_VER_GET_DEV_ADDR0 0 +#define ATTO_VER_GET_DEV_ADDR ATTO_VER_GET_DEV_ADDR0 + +struct __packed atto_hba_get_device_address { + u8 addr_type; + #define ATTO_GDA_AT_PORT 0x00 + #define ATTO_GDA_AT_NODE 0x01 + #define ATTO_GDA_AT_MAC 0x02 + #define ATTO_GDA_AT_PORTID 0x03 + #define ATTO_GDA_AT_UNIQUE 0x04 + + u8 reserved; + u16 addr_len; + u32 target_id; + u8 address[256]; +}; + +/* The following functions are supported by firmware but do not have any + * associated driver structures + */ +#define ATTO_FUNC_PHY_CTRL 0x06 +#define ATTO_FUNC_CONN_CTRL 0x0C +#define ATTO_FUNC_ADAP_CTRL 0x0E +#define ATTO_VER_ADAP_CTRL0 0 +#define ATTO_VER_ADAP_CTRL ATTO_VER_ADAP_CTRL0 + +struct __packed atto_hba_adap_ctrl { + u8 adap_func; + #define ATTO_AC_AF_HARD_RST 0x00 + #define ATTO_AC_AF_GET_STATE 0x01 + #define ATTO_AC_AF_GET_TEMP 0x02 + + u8 adap_state; + #define ATTO_AC_AS_UNKNOWN 0x00 + #define ATTO_AC_AS_OK 0x01 + #define ATTO_AC_AS_RST_SCHED 0x02 + #define ATTO_AC_AS_RST_IN_PROG 0x03 + #define ATTO_AC_AS_RST_DISC 0x04 + #define ATTO_AC_AS_DEGRADED 0x05 + #define ATTO_AC_AS_DISABLED 0x06 + #define ATTO_AC_AS_TEMP 0x07 + + u8 reserved[2]; + + union { + struct { + u8 temp_sensor; + u8 temp_state; + + #define ATTO_AC_TS_UNSUPP 0x00 + #define ATTO_AC_TS_UNKNOWN 0x01 + #define ATTO_AC_TS_INIT_FAILED 0x02 + #define ATTO_AC_TS_NORMAL 0x03 + #define ATTO_AC_TS_OUT_OF_RANGE 0x04 + #define ATTO_AC_TS_FAULT 0x05 + + signed short temp_value; + signed short temp_lower_lim; + signed short temp_upper_lim; + char temp_desc[32]; + u8 reserved2[20]; + }; + }; +}; + +#define ATTO_FUNC_GET_DEV_INFO 0x0F +#define ATTO_VER_GET_DEV_INFO0 0 +#define ATTO_VER_GET_DEV_INFO ATTO_VER_GET_DEV_INFO0 + +struct __packed atto_hba_sas_device_info { + + #define ATTO_SDI_MAX_PHYS_WIDE_PORT 16 + + u8 phy_id[ATTO_SDI_MAX_PHYS_WIDE_PORT]; /* IDs of parent exp/adapt */ + #define ATTO_SDI_PHY_ID_INV ATTO_SAS_PHY_ID_INV + u32 exp_target_id; + u32 sas_port_mask; + u8 sas_level; + #define ATTO_SDI_SAS_LVL_INV 0xFF + + u8 slot_num; + #define ATTO_SDI_SLOT_NUM_INV ATTO_SLOT_NUM_INV + + u8 dev_type; + #define ATTO_SDI_DT_END_DEVICE 0 + #define ATTO_SDI_DT_EXPANDER 1 + #define ATTO_SDI_DT_PORT_MULT 2 + + u8 ini_flags; + u8 tgt_flags; + u8 link_rate; /* SMP_RATE_XXX */ + u8 loc_flags; + #define ATTO_SDI_LF_DIRECT 0x01 + #define ATTO_SDI_LF_EXPANDER 0x02 + #define ATTO_SDI_LF_PORT_MULT 0x04 + u8 pm_port; + u8 reserved[0x60]; +}; + +union atto_hba_device_info { + struct atto_hba_sas_device_info sas_dev_info; +}; + +struct __packed atto_hba_get_device_info { + u32 target_id; + u8 info_type; + #define ATTO_GDI_IT_UNKNOWN 0x00 + #define ATTO_GDI_IT_SAS 0x01 + #define ATTO_GDI_IT_FC 0x02 + #define ATTO_GDI_IT_FCOE 0x03 + + u8 reserved[11]; + union atto_hba_device_info dev_info; +}; + +struct atto_ioctl { + u8 version; + u8 function; /* ATTO_FUNC_XXX */ + u8 status; +#define ATTO_STS_SUCCESS 0x00 +#define ATTO_STS_FAILED 0x01 +#define ATTO_STS_INV_VERSION 0x02 +#define ATTO_STS_OUT_OF_RSRC 0x03 +#define ATTO_STS_INV_FUNC 0x04 +#define ATTO_STS_UNSUPPORTED 0x05 +#define ATTO_STS_INV_ADAPTER 0x06 +#define ATTO_STS_INV_DRVR_VER 0x07 +#define ATTO_STS_INV_PARAM 0x08 +#define ATTO_STS_TIMEOUT 0x09 +#define ATTO_STS_NOT_APPL 0x0A +#define ATTO_STS_DEGRADED 0x0B + + u8 flags; + #define HBAF_TUNNEL 0x01 + + u32 data_length; + u8 reserved2[56]; + + union { + u8 byte[1]; + struct atto_hba_get_adapter_info get_adap_info; + struct atto_hba_get_adapter_address get_adap_addr; + struct atto_hba_scsi_pass_thru scsi_pass_thru; + struct atto_hba_get_device_address get_dev_addr; + struct atto_hba_adap_ctrl adap_ctrl; + struct atto_hba_get_device_info get_dev_info; + struct atto_hba_trace trace; + } data; + +}; + +struct __packed atto_ioctl_vda_scsi_cmd { + + #define ATTO_VDA_SCSI_VER0 0 + #define ATTO_VDA_SCSI_VER ATTO_VDA_SCSI_VER0 + + u8 cdb[16]; + u32 flags; + u32 data_length; + u32 residual_length; + u16 target_id; + u8 sense_len; + u8 scsi_stat; + u8 reserved[8]; + u8 sense_data[80]; +}; + +struct __packed atto_ioctl_vda_flash_cmd { + + #define ATTO_VDA_FLASH_VER0 0 + #define ATTO_VDA_FLASH_VER ATTO_VDA_FLASH_VER0 + + u32 flash_addr; + u32 data_length; + u8 sub_func; + u8 reserved[15]; + + union { + struct { + u32 flash_size; + u32 page_size; + u8 prod_info[32]; + } info; + + struct { + char file_name[16]; /* 8.3 fname, NULL term, wc=* */ + u32 file_size; + } file; + } data; + +}; + +struct __packed atto_ioctl_vda_diag_cmd { + + #define ATTO_VDA_DIAG_VER0 0 + #define ATTO_VDA_DIAG_VER ATTO_VDA_DIAG_VER0 + + u64 local_addr; + u32 data_length; + u8 sub_func; + u8 flags; + u8 reserved[3]; +}; + +struct __packed atto_ioctl_vda_cli_cmd { + + #define ATTO_VDA_CLI_VER0 0 + #define ATTO_VDA_CLI_VER ATTO_VDA_CLI_VER0 + + u32 cmd_rsp_len; +}; + +struct __packed atto_ioctl_vda_smp_cmd { + + #define ATTO_VDA_SMP_VER0 0 + #define ATTO_VDA_SMP_VER ATTO_VDA_SMP_VER0 + + u64 dest; + u32 cmd_rsp_len; +}; + +struct __packed atto_ioctl_vda_cfg_cmd { + + #define ATTO_VDA_CFG_VER0 0 + #define ATTO_VDA_CFG_VER ATTO_VDA_CFG_VER0 + + u32 data_length; + u8 cfg_func; + u8 reserved[11]; + + union { + u8 bytes[112]; + struct atto_vda_cfg_init init; + } data; + +}; + +struct __packed atto_ioctl_vda_mgt_cmd { + + #define ATTO_VDA_MGT_VER0 0 + #define ATTO_VDA_MGT_VER ATTO_VDA_MGT_VER0 + + u8 mgt_func; + u8 scan_generation; + u16 dev_index; + u32 data_length; + u8 reserved[8]; + union { + u8 bytes[112]; + struct atto_vda_devinfo dev_info; + struct atto_vda_grp_info grp_info; + struct atto_vdapart_info part_info; + struct atto_vda_dh_info dh_info; + struct atto_vda_metrics_info metrics_info; + struct atto_vda_schedule_info sched_info; + struct atto_vda_n_vcache_info nvcache_info; + struct atto_vda_buzzer_info buzzer_info; + struct atto_vda_adapter_info adapter_info; + struct atto_vda_temp_info temp_info; + struct atto_vda_fan_info fan_info; + } data; +}; + +struct __packed atto_ioctl_vda_gsv_cmd { + + #define ATTO_VDA_GSV_VER0 0 + #define ATTO_VDA_GSV_VER ATTO_VDA_GSV_VER0 + + u8 rsp_len; + u8 reserved[7]; + u8 version_info[1]; + #define ATTO_VDA_VER_UNSUPPORTED 0xFF + +}; + +struct __packed atto_ioctl_vda { + u8 version; + u8 function; /* VDA_FUNC_XXXX */ + u8 status; /* ATTO_STS_XXX */ + u8 vda_status; /* RS_XXX (if status == ATTO_STS_SUCCESS) */ + u32 data_length; + u8 reserved[8]; + + union { + struct atto_ioctl_vda_scsi_cmd scsi; + struct atto_ioctl_vda_flash_cmd flash; + struct atto_ioctl_vda_diag_cmd diag; + struct atto_ioctl_vda_cli_cmd cli; + struct atto_ioctl_vda_smp_cmd smp; + struct atto_ioctl_vda_cfg_cmd cfg; + struct atto_ioctl_vda_mgt_cmd mgt; + struct atto_ioctl_vda_gsv_cmd gsv; + u8 cmd_info[256]; + } cmd; + + union { + u8 data[1]; + struct atto_vda_devinfo2 dev_info2; + } data; + +}; + +struct __packed atto_ioctl_smp { + u8 version; + #define ATTO_SMP_VERSION0 0 + #define ATTO_SMP_VERSION1 1 + #define ATTO_SMP_VERSION2 2 + #define ATTO_SMP_VERSION ATTO_SMP_VERSION2 + + u8 function; +#define ATTO_SMP_FUNC_DISC_SMP 0x00 +#define ATTO_SMP_FUNC_DISC_TARG 0x01 +#define ATTO_SMP_FUNC_SEND_CMD 0x02 +#define ATTO_SMP_FUNC_DISC_TARG_DIRECT 0x03 +#define ATTO_SMP_FUNC_SEND_CMD_DIRECT 0x04 +#define ATTO_SMP_FUNC_DISC_SMP_DIRECT 0x05 + + u8 status; /* ATTO_STS_XXX */ + u8 smp_status; /* if status == ATTO_STS_SUCCESS */ + #define ATTO_SMP_STS_SUCCESS 0x00 + #define ATTO_SMP_STS_FAILURE 0x01 + #define ATTO_SMP_STS_RESCAN 0x02 + #define ATTO_SMP_STS_NOT_FOUND 0x03 + + u16 target_id; + u8 phy_id; + u8 dev_index; + u64 smp_sas_addr; + u64 targ_sas_addr; + u32 req_length; + u32 rsp_length; + u8 flags; + #define ATTO_SMPF_ROOT_EXP 0x01 /* expander direct attached */ + + u8 reserved[31]; + + union { + u8 byte[1]; + u32 dword[1]; + } data; + +}; + +struct __packed atto_express_ioctl { + struct atto_express_ioctl_header header; + + union { + struct atto_firmware_rw_request fwrw; + struct atto_param_rw_request prw; + struct atto_channel_list chanlist; + struct atto_channel_info chaninfo; + struct atto_ioctl ioctl_hba; + struct atto_module_info modinfo; + struct atto_ioctl_vda ioctl_vda; + struct atto_ioctl_smp ioctl_smp; + struct atto_csmi csmi; + + } data; +}; + +/* The struct associated with the code is listed after the definition */ +#define EXPRESS_IOCTL_MIN 0x4500 +#define EXPRESS_IOCTL_RW_FIRMWARE 0x4500 /* FIRMWARERW */ +#define EXPRESS_IOCTL_READ_PARAMS 0x4501 /* PARAMRW */ +#define EXPRESS_IOCTL_WRITE_PARAMS 0x4502 /* PARAMRW */ +#define EXPRESS_IOCTL_FC_API 0x4503 /* internal */ +#define EXPRESS_IOCTL_GET_CHANNELS 0x4504 /* CHANNELLIST */ +#define EXPRESS_IOCTL_CHAN_INFO 0x4505 /* CHANNELINFO */ +#define EXPRESS_IOCTL_DEFAULT_PARAMS 0x4506 /* PARAMRW */ +#define EXPRESS_ADDR_MEMORY 0x4507 /* MEMADDR */ +#define EXPRESS_RW_MEMORY 0x4508 /* MEMRW */ +#define EXPRESS_TSDK_DUMP 0x4509 /* TSDKDUMP */ +#define EXPRESS_IOCTL_SMP 0x450A /* IOCTL_SMP */ +#define EXPRESS_CSMI 0x450B /* CSMI */ +#define EXPRESS_IOCTL_HBA 0x450C /* IOCTL_HBA */ +#define EXPRESS_IOCTL_VDA 0x450D /* IOCTL_VDA */ +#define EXPRESS_IOCTL_GET_ID 0x450E /* GET_ID */ +#define EXPRESS_IOCTL_GET_MOD_INFO 0x450F /* MODULE_INFO */ +#define EXPRESS_IOCTL_MAX 0x450F + +#endif diff --git a/drivers/scsi/esas2r/atvda.h b/drivers/scsi/esas2r/atvda.h new file mode 100644 index 000000000000..5fc1f991d24e --- /dev/null +++ b/drivers/scsi/esas2r/atvda.h @@ -0,0 +1,1319 @@ +/* linux/drivers/scsi/esas2r/atvda.h + * ATTO VDA interface definitions + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + + +#ifndef ATVDA_H +#define ATVDA_H + +struct __packed atto_dev_addr { + u64 dev_port; + u64 hba_port; + u8 lun; + u8 flags; + #define VDA_DEVADDRF_SATA 0x01 + #define VDA_DEVADDRF_SSD 0x02 + u8 link_speed; /* VDALINKSPEED_xxx */ + u8 pad[1]; +}; + +/* dev_addr2 was added for 64-bit alignment */ + +struct __packed atto_dev_addr2 { + u64 dev_port; + u64 hba_port; + u8 lun; + u8 flags; + u8 link_speed; + u8 pad[5]; +}; + +struct __packed atto_vda_sge { + u32 length; + u64 address; +}; + + +/* VDA request function codes */ + +#define VDA_FUNC_SCSI 0x00 +#define VDA_FUNC_FLASH 0x01 +#define VDA_FUNC_DIAG 0x02 +#define VDA_FUNC_AE 0x03 +#define VDA_FUNC_CLI 0x04 +#define VDA_FUNC_IOCTL 0x05 +#define VDA_FUNC_CFG 0x06 +#define VDA_FUNC_MGT 0x07 +#define VDA_FUNC_GSV 0x08 + + +/* VDA request status values. for host driver considerations, values for + * SCSI requests start at zero. other requests may use these values as well. */ + +#define RS_SUCCESS 0x00 /*! successful completion */ +#define RS_INV_FUNC 0x01 /*! invalid command function */ +#define RS_BUSY 0x02 /*! insufficient resources */ +#define RS_SEL 0x03 /*! no target at target_id */ +#define RS_NO_LUN 0x04 /*! invalid LUN */ +#define RS_TIMEOUT 0x05 /*! request timeout */ +#define RS_OVERRUN 0x06 /*! data overrun */ +#define RS_UNDERRUN 0x07 /*! data underrun */ +#define RS_SCSI_ERROR 0x08 /*! SCSI error occurred */ +#define RS_ABORTED 0x0A /*! command aborted */ +#define RS_RESID_MISM 0x0B /*! residual length incorrect */ +#define RS_TM_FAILED 0x0C /*! task management failed */ +#define RS_RESET 0x0D /*! aborted due to bus reset */ +#define RS_ERR_DMA_SG 0x0E /*! error reading SG list */ +#define RS_ERR_DMA_DATA 0x0F /*! error transferring data */ +#define RS_UNSUPPORTED 0x10 /*! unsupported request */ +#define RS_SEL2 0x70 /*! internal generated RS_SEL */ +#define RS_VDA_BASE 0x80 /*! base of VDA-specific errors */ +#define RS_MGT_BASE 0x80 /*! base of VDA management errors */ +#define RS_SCAN_FAIL (RS_MGT_BASE + 0x00) +#define RS_DEV_INVALID (RS_MGT_BASE + 0x01) +#define RS_DEV_ASSIGNED (RS_MGT_BASE + 0x02) +#define RS_DEV_REMOVE (RS_MGT_BASE + 0x03) +#define RS_DEV_LOST (RS_MGT_BASE + 0x04) +#define RS_SCAN_GEN (RS_MGT_BASE + 0x05) +#define RS_GRP_INVALID (RS_MGT_BASE + 0x08) +#define RS_GRP_EXISTS (RS_MGT_BASE + 0x09) +#define RS_GRP_LIMIT (RS_MGT_BASE + 0x0A) +#define RS_GRP_INTLV (RS_MGT_BASE + 0x0B) +#define RS_GRP_SPAN (RS_MGT_BASE + 0x0C) +#define RS_GRP_TYPE (RS_MGT_BASE + 0x0D) +#define RS_GRP_MEMBERS (RS_MGT_BASE + 0x0E) +#define RS_GRP_COMMIT (RS_MGT_BASE + 0x0F) +#define RS_GRP_REBUILD (RS_MGT_BASE + 0x10) +#define RS_GRP_REBUILD_TYPE (RS_MGT_BASE + 0x11) +#define RS_GRP_BLOCK_SIZE (RS_MGT_BASE + 0x12) +#define RS_CFG_SAVE (RS_MGT_BASE + 0x14) +#define RS_PART_LAST (RS_MGT_BASE + 0x18) +#define RS_ELEM_INVALID (RS_MGT_BASE + 0x19) +#define RS_PART_MAPPED (RS_MGT_BASE + 0x1A) +#define RS_PART_TARGET (RS_MGT_BASE + 0x1B) +#define RS_PART_LUN (RS_MGT_BASE + 0x1C) +#define RS_PART_DUP (RS_MGT_BASE + 0x1D) +#define RS_PART_NOMAP (RS_MGT_BASE + 0x1E) +#define RS_PART_MAX (RS_MGT_BASE + 0x1F) +#define RS_PART_CAP (RS_MGT_BASE + 0x20) +#define RS_PART_STATE (RS_MGT_BASE + 0x21) +#define RS_TEST_IN_PROG (RS_MGT_BASE + 0x22) +#define RS_METRICS_ERROR (RS_MGT_BASE + 0x23) +#define RS_HS_ERROR (RS_MGT_BASE + 0x24) +#define RS_NO_METRICS_TEST (RS_MGT_BASE + 0x25) +#define RS_BAD_PARAM (RS_MGT_BASE + 0x26) +#define RS_GRP_MEMBER_SIZE (RS_MGT_BASE + 0x27) +#define RS_FLS_BASE 0xB0 /*! base of VDA errors */ +#define RS_FLS_ERR_AREA (RS_FLS_BASE + 0x00) +#define RS_FLS_ERR_BUSY (RS_FLS_BASE + 0x01) +#define RS_FLS_ERR_RANGE (RS_FLS_BASE + 0x02) +#define RS_FLS_ERR_BEGIN (RS_FLS_BASE + 0x03) +#define RS_FLS_ERR_CHECK (RS_FLS_BASE + 0x04) +#define RS_FLS_ERR_FAIL (RS_FLS_BASE + 0x05) +#define RS_FLS_ERR_RSRC (RS_FLS_BASE + 0x06) +#define RS_FLS_ERR_NOFILE (RS_FLS_BASE + 0x07) +#define RS_FLS_ERR_FSIZE (RS_FLS_BASE + 0x08) +#define RS_CFG_BASE 0xC0 /*! base of VDA configuration errors */ +#define RS_CFG_ERR_BUSY (RS_CFG_BASE + 0) +#define RS_CFG_ERR_SGE (RS_CFG_BASE + 1) +#define RS_CFG_ERR_DATE (RS_CFG_BASE + 2) +#define RS_CFG_ERR_TIME (RS_CFG_BASE + 3) +#define RS_DEGRADED 0xFB /*! degraded mode */ +#define RS_CLI_INTERNAL 0xFC /*! VDA CLI internal error */ +#define RS_VDA_INTERNAL 0xFD /*! catch-all */ +#define RS_PENDING 0xFE /*! pending, not started */ +#define RS_STARTED 0xFF /*! started */ + + +/* flash request subfunctions. these are used in both the IOCTL and the + * driver-firmware interface (VDA_FUNC_FLASH). */ + +#define VDA_FLASH_BEGINW 0x00 +#define VDA_FLASH_READ 0x01 +#define VDA_FLASH_WRITE 0x02 +#define VDA_FLASH_COMMIT 0x03 +#define VDA_FLASH_CANCEL 0x04 +#define VDA_FLASH_INFO 0x05 +#define VDA_FLASH_FREAD 0x06 +#define VDA_FLASH_FWRITE 0x07 +#define VDA_FLASH_FINFO 0x08 + + +/* IOCTL request subfunctions. these identify the payload type for + * VDA_FUNC_IOCTL. + */ + +#define VDA_IOCTL_HBA 0x00 +#define VDA_IOCTL_CSMI 0x01 +#define VDA_IOCTL_SMP 0x02 + +struct __packed atto_vda_devinfo { + struct atto_dev_addr dev_addr; + u8 vendor_id[8]; + u8 product_id[16]; + u8 revision[4]; + u64 capacity; + u32 block_size; + u8 dev_type; + + union { + u8 dev_status; + #define VDADEVSTAT_INVALID 0x00 + #define VDADEVSTAT_CORRUPT VDADEVSTAT_INVALID + #define VDADEVSTAT_ASSIGNED 0x01 + #define VDADEVSTAT_SPARE 0x02 + #define VDADEVSTAT_UNAVAIL 0x03 + #define VDADEVSTAT_PT_MAINT 0x04 + #define VDADEVSTAT_LCLSPARE 0x05 + #define VDADEVSTAT_UNUSEABLE 0x06 + #define VDADEVSTAT_AVAIL 0xFF + + u8 op_ctrl; + #define VDA_DEV_OP_CTRL_START 0x01 + #define VDA_DEV_OP_CTRL_HALT 0x02 + #define VDA_DEV_OP_CTRL_RESUME 0x03 + #define VDA_DEV_OP_CTRL_CANCEL 0x04 + }; + + u8 member_state; + #define VDAMBRSTATE_ONLINE 0x00 + #define VDAMBRSTATE_DEGRADED 0x01 + #define VDAMBRSTATE_UNAVAIL 0x02 + #define VDAMBRSTATE_FAULTED 0x03 + #define VDAMBRSTATE_MISREAD 0x04 + #define VDAMBRSTATE_INCOMPAT 0x05 + + u8 operation; + #define VDAOP_NONE 0x00 + #define VDAOP_REBUILD 0x01 + #define VDAOP_ERASE 0x02 + #define VDAOP_PATTERN 0x03 + #define VDAOP_CONVERSION 0x04 + #define VDAOP_FULL_INIT 0x05 + #define VDAOP_QUICK_INIT 0x06 + #define VDAOP_SECT_SCAN 0x07 + #define VDAOP_SECT_SCAN_PARITY 0x08 + #define VDAOP_SECT_SCAN_PARITY_FIX 0x09 + #define VDAOP_RECOV_REBUILD 0x0A + + u8 op_status; + #define VDAOPSTAT_OK 0x00 + #define VDAOPSTAT_FAULTED 0x01 + #define VDAOPSTAT_HALTED 0x02 + #define VDAOPSTAT_INT 0x03 + + u8 progress; /* 0 - 100% */ + u16 ses_dev_index; + #define VDASESDI_INVALID 0xFFFF + + u8 serial_no[32]; + + union { + u16 target_id; + #define VDATGTID_INVALID 0xFFFF + + u16 features_mask; + }; + + u16 lun; + u16 features; + #define VDADEVFEAT_ENC_SERV 0x0001 + #define VDADEVFEAT_IDENT 0x0002 + #define VDADEVFEAT_DH_SUPP 0x0004 + #define VDADEVFEAT_PHYS_ID 0x0008 + + u8 ses_element_id; + u8 link_speed; + #define VDALINKSPEED_UNKNOWN 0x00 + #define VDALINKSPEED_1GB 0x01 + #define VDALINKSPEED_1_5GB 0x02 + #define VDALINKSPEED_2GB 0x03 + #define VDALINKSPEED_3GB 0x04 + #define VDALINKSPEED_4GB 0x05 + #define VDALINKSPEED_6GB 0x06 + #define VDALINKSPEED_8GB 0x07 + + u16 phys_target_id; + u8 reserved[2]; +}; + + +/*! struct atto_vda_devinfo2 is a replacement for atto_vda_devinfo. it + * extends beyond the 0x70 bytes allowed in atto_vda_mgmt_req; therefore, + * the entire structure is DMaed between the firmware and host buffer and + * the data will always be in little endian format. + */ + +struct __packed atto_vda_devinfo2 { + struct atto_dev_addr dev_addr; + u8 vendor_id[8]; + u8 product_id[16]; + u8 revision[4]; + u64 capacity; + u32 block_size; + u8 dev_type; + u8 dev_status; + u8 member_state; + u8 operation; + u8 op_status; + u8 progress; + u16 ses_dev_index; + u8 serial_no[32]; + union { + u16 target_id; + u16 features_mask; + }; + + u16 lun; + u16 features; + u8 ses_element_id; + u8 link_speed; + u16 phys_target_id; + u8 reserved[2]; + +/* This is where fields specific to struct atto_vda_devinfo2 begin. Note + * that the structure version started at one so applications that unionize this + * structure with atto_vda_dev_info can differentiate them if desired. + */ + + u8 version; + #define VDADEVINFO_VERSION0 0x00 + #define VDADEVINFO_VERSION1 0x01 + #define VDADEVINFO_VERSION2 0x02 + #define VDADEVINFO_VERSION3 0x03 + #define VDADEVINFO_VERSION VDADEVINFO_VERSION3 + + u8 reserved2[3]; + + /* sector scanning fields */ + + u32 ss_curr_errors; + u64 ss_curr_scanned; + u32 ss_curr_recvrd; + u32 ss_scan_length; + u32 ss_total_errors; + u32 ss_total_recvrd; + u32 ss_num_scans; + + /* grp_name was added in version 2 of this structure. */ + + char grp_name[15]; + u8 reserved3[4]; + + /* dev_addr_list was added in version 3 of this structure. */ + + u8 num_dev_addr; + struct atto_dev_addr2 dev_addr_list[8]; +}; + + +struct __packed atto_vda_grp_info { + u8 grp_index; + #define VDA_MAX_RAID_GROUPS 32 + + char grp_name[15]; + u64 capacity; + u32 block_size; + u32 interleave; + u8 type; + #define VDA_GRP_TYPE_RAID0 0 + #define VDA_GRP_TYPE_RAID1 1 + #define VDA_GRP_TYPE_RAID4 4 + #define VDA_GRP_TYPE_RAID5 5 + #define VDA_GRP_TYPE_RAID6 6 + #define VDA_GRP_TYPE_RAID10 10 + #define VDA_GRP_TYPE_RAID40 40 + #define VDA_GRP_TYPE_RAID50 50 + #define VDA_GRP_TYPE_RAID60 60 + #define VDA_GRP_TYPE_DVRAID_HS 252 + #define VDA_GRP_TYPE_DVRAID_NOHS 253 + #define VDA_GRP_TYPE_JBOD 254 + #define VDA_GRP_TYPE_SPARE 255 + + union { + u8 status; + #define VDA_GRP_STAT_INVALID 0x00 + #define VDA_GRP_STAT_NEW 0x01 + #define VDA_GRP_STAT_WAITING 0x02 + #define VDA_GRP_STAT_ONLINE 0x03 + #define VDA_GRP_STAT_DEGRADED 0x04 + #define VDA_GRP_STAT_OFFLINE 0x05 + #define VDA_GRP_STAT_DELETED 0x06 + #define VDA_GRP_STAT_RECOV_BASIC 0x07 + #define VDA_GRP_STAT_RECOV_EXTREME 0x08 + + u8 op_ctrl; + #define VDA_GRP_OP_CTRL_START 0x01 + #define VDA_GRP_OP_CTRL_HALT 0x02 + #define VDA_GRP_OP_CTRL_RESUME 0x03 + #define VDA_GRP_OP_CTRL_CANCEL 0x04 + }; + + u8 rebuild_state; + #define VDA_RBLD_NONE 0x00 + #define VDA_RBLD_REBUILD 0x01 + #define VDA_RBLD_ERASE 0x02 + #define VDA_RBLD_PATTERN 0x03 + #define VDA_RBLD_CONV 0x04 + #define VDA_RBLD_FULL_INIT 0x05 + #define VDA_RBLD_QUICK_INIT 0x06 + #define VDA_RBLD_SECT_SCAN 0x07 + #define VDA_RBLD_SECT_SCAN_PARITY 0x08 + #define VDA_RBLD_SECT_SCAN_PARITY_FIX 0x09 + #define VDA_RBLD_RECOV_REBUILD 0x0A + #define VDA_RBLD_RECOV_BASIC 0x0B + #define VDA_RBLD_RECOV_EXTREME 0x0C + + u8 span_depth; + u8 progress; + u8 mirror_width; + u8 stripe_width; + u8 member_cnt; + + union { + u16 members[32]; + #define VDA_MEMBER_MISSING 0xFFFF + #define VDA_MEMBER_NEW 0xFFFE + u16 features_mask; + }; + + u16 features; + #define VDA_GRP_FEAT_HOTSWAP 0x0001 + #define VDA_GRP_FEAT_SPDRD_MASK 0x0006 + #define VDA_GRP_FEAT_SPDRD_DIS 0x0000 + #define VDA_GRP_FEAT_SPDRD_ENB 0x0002 + #define VDA_GRP_FEAT_SPDRD_AUTO 0x0004 + #define VDA_GRP_FEAT_IDENT 0x0008 + #define VDA_GRP_FEAT_RBLDPRI_MASK 0x0030 + #define VDA_GRP_FEAT_RBLDPRI_LOW 0x0010 + #define VDA_GRP_FEAT_RBLDPRI_SAME 0x0020 + #define VDA_GRP_FEAT_RBLDPRI_HIGH 0x0030 + #define VDA_GRP_FEAT_WRITE_CACHE 0x0040 + #define VDA_GRP_FEAT_RBLD_RESUME 0x0080 + #define VDA_GRP_FEAT_SECT_RESUME 0x0100 + #define VDA_GRP_FEAT_INIT_RESUME 0x0200 + #define VDA_GRP_FEAT_SSD 0x0400 + #define VDA_GRP_FEAT_BOOT_DEV 0x0800 + + /* + * for backward compatibility, a prefetch value of zero means the + * setting is ignored/unsupported. therefore, the firmware supported + * 0-6 values are incremented to 1-7. + */ + + u8 prefetch; + u8 op_status; + #define VDAGRPOPSTAT_MASK 0x0F + #define VDAGRPOPSTAT_INVALID 0x00 + #define VDAGRPOPSTAT_OK 0x01 + #define VDAGRPOPSTAT_FAULTED 0x02 + #define VDAGRPOPSTAT_HALTED 0x03 + #define VDAGRPOPSTAT_INT 0x04 + #define VDAGRPOPPROC_MASK 0xF0 + #define VDAGRPOPPROC_STARTABLE 0x10 + #define VDAGRPOPPROC_CANCELABLE 0x20 + #define VDAGRPOPPROC_RESUMABLE 0x40 + #define VDAGRPOPPROC_HALTABLE 0x80 + u8 over_provision; + u8 reserved[3]; + +}; + + +struct __packed atto_vdapart_info { + u8 part_no; + #define VDA_MAX_PARTITIONS 128 + + char grp_name[15]; + u64 part_size; + u64 start_lba; + u32 block_size; + u16 target_id; + u8 LUN; + char serial_no[41]; + u8 features; + #define VDAPI_FEAT_WRITE_CACHE 0x01 + + u8 reserved[7]; +}; + + +struct __packed atto_vda_dh_info { + u8 req_type; + #define VDADH_RQTYPE_CACHE 0x01 + #define VDADH_RQTYPE_FETCH 0x02 + #define VDADH_RQTYPE_SET_STAT 0x03 + #define VDADH_RQTYPE_GET_STAT 0x04 + + u8 req_qual; + #define VDADH_RQQUAL_SMART 0x01 + #define VDADH_RQQUAL_MEDDEF 0x02 + #define VDADH_RQQUAL_INFOEXC 0x04 + + u8 num_smart_attribs; + u8 status; + #define VDADH_STAT_DISABLE 0x00 + #define VDADH_STAT_ENABLE 0x01 + + u32 med_defect_cnt; + u32 info_exc_cnt; + u8 smart_status; + #define VDADH_SMARTSTAT_OK 0x00 + #define VDADH_SMARTSTAT_ERR 0x01 + + u8 reserved[35]; + struct atto_vda_sge sge[1]; +}; + + +struct __packed atto_vda_dh_smart { + u8 attrib_id; + u8 current_val; + u8 worst; + u8 threshold; + u8 raw_data[6]; + u8 raw_attrib_status; + #define VDADHSM_RAWSTAT_PREFAIL_WARRANTY 0x01 + #define VDADHSM_RAWSTAT_ONLINE_COLLECTION 0x02 + #define VDADHSM_RAWSTAT_PERFORMANCE_ATTR 0x04 + #define VDADHSM_RAWSTAT_ERROR_RATE_ATTR 0x08 + #define VDADHSM_RAWSTAT_EVENT_COUNT_ATTR 0x10 + #define VDADHSM_RAWSTAT_SELF_PRESERVING_ATTR 0x20 + + u8 calc_attrib_status; + #define VDADHSM_CALCSTAT_UNKNOWN 0x00 + #define VDADHSM_CALCSTAT_GOOD 0x01 + #define VDADHSM_CALCSTAT_PREFAIL 0x02 + #define VDADHSM_CALCSTAT_OLDAGE 0x03 + + u8 reserved[4]; +}; + + +struct __packed atto_vda_metrics_info { + u8 data_version; + #define VDAMET_VERSION0 0x00 + #define VDAMET_VERSION VDAMET_VERSION0 + + u8 metrics_action; + #define VDAMET_METACT_NONE 0x00 + #define VDAMET_METACT_START 0x01 + #define VDAMET_METACT_STOP 0x02 + #define VDAMET_METACT_RETRIEVE 0x03 + #define VDAMET_METACT_CLEAR 0x04 + + u8 test_action; + #define VDAMET_TSTACT_NONE 0x00 + #define VDAMET_TSTACT_STRT_INIT 0x01 + #define VDAMET_TSTACT_STRT_READ 0x02 + #define VDAMET_TSTACT_STRT_VERIFY 0x03 + #define VDAMET_TSTACT_STRT_INIT_VERIFY 0x04 + #define VDAMET_TSTACT_STOP 0x05 + + u8 num_dev_indexes; + #define VDAMET_ALL_DEVICES 0xFF + + u16 dev_indexes[32]; + u8 reserved[12]; + struct atto_vda_sge sge[1]; +}; + + +struct __packed atto_vda_metrics_data { + u16 dev_index; + u16 length; + #define VDAMD_LEN_LAST 0x8000 + #define VDAMD_LEN_MASK 0x0FFF + + u32 flags; + #define VDAMDF_RUN 0x00000007 + #define VDAMDF_RUN_READ 0x00000001 + #define VDAMDF_RUN_WRITE 0x00000002 + #define VDAMDF_RUN_ALL 0x00000004 + #define VDAMDF_READ 0x00000010 + #define VDAMDF_WRITE 0x00000020 + #define VDAMDF_ALL 0x00000040 + #define VDAMDF_DRIVETEST 0x40000000 + #define VDAMDF_NEW 0x80000000 + + u64 total_read_data; + u64 total_write_data; + u64 total_read_io; + u64 total_write_io; + u64 read_start_time; + u64 read_stop_time; + u64 write_start_time; + u64 write_stop_time; + u64 read_maxio_time; + u64 wpvdadmetricsdatarite_maxio_time; + u64 read_totalio_time; + u64 write_totalio_time; + u64 read_total_errs; + u64 write_total_errs; + u64 read_recvrd_errs; + u64 write_recvrd_errs; + u64 miscompares; +}; + + +struct __packed atto_vda_schedule_info { + u8 schedule_type; + #define VDASI_SCHTYPE_ONETIME 0x01 + #define VDASI_SCHTYPE_DAILY 0x02 + #define VDASI_SCHTYPE_WEEKLY 0x03 + + u8 operation; + #define VDASI_OP_NONE 0x00 + #define VDASI_OP_CREATE 0x01 + #define VDASI_OP_CANCEL 0x02 + + u8 hour; + u8 minute; + u8 day; + #define VDASI_DAY_NONE 0x00 + + u8 progress; + #define VDASI_PROG_NONE 0xFF + + u8 event_type; + #define VDASI_EVTTYPE_SECT_SCAN 0x01 + #define VDASI_EVTTYPE_SECT_SCAN_PARITY 0x02 + #define VDASI_EVTTYPE_SECT_SCAN_PARITY_FIX 0x03 + + u8 recurrences; + #define VDASI_RECUR_FOREVER 0x00 + + u32 id; + #define VDASI_ID_NONE 0x00 + + char grp_name[15]; + u8 reserved[85]; +}; + + +struct __packed atto_vda_n_vcache_info { + u8 super_cap_status; + #define VDANVCI_SUPERCAP_NOT_PRESENT 0x00 + #define VDANVCI_SUPERCAP_FULLY_CHARGED 0x01 + #define VDANVCI_SUPERCAP_NOT_CHARGED 0x02 + + u8 nvcache_module_status; + #define VDANVCI_NVCACHEMODULE_NOT_PRESENT 0x00 + #define VDANVCI_NVCACHEMODULE_PRESENT 0x01 + + u8 protection_mode; + #define VDANVCI_PROTMODE_HI_PROTECT 0x00 + #define VDANVCI_PROTMODE_HI_PERFORM 0x01 + + u8 reserved[109]; +}; + + +struct __packed atto_vda_buzzer_info { + u8 status; + #define VDABUZZI_BUZZER_OFF 0x00 + #define VDABUZZI_BUZZER_ON 0x01 + #define VDABUZZI_BUZZER_LAST 0x02 + + u8 reserved[3]; + u32 duration; + #define VDABUZZI_DURATION_INDEFINITE 0xffffffff + + u8 reserved2[104]; +}; + + +struct __packed atto_vda_adapter_info { + u8 version; + #define VDAADAPINFO_VERSION0 0x00 + #define VDAADAPINFO_VERSION VDAADAPINFO_VERSION0 + + u8 reserved; + signed short utc_offset; + u32 utc_time; + u32 features; + #define VDA_ADAP_FEAT_IDENT 0x0001 + #define VDA_ADAP_FEAT_BUZZ_ERR 0x0002 + #define VDA_ADAP_FEAT_UTC_TIME 0x0004 + + u32 valid_features; + char active_config[33]; + u8 temp_count; + u8 fan_count; + u8 reserved3[61]; +}; + + +struct __packed atto_vda_temp_info { + u8 temp_index; + u8 max_op_temp; + u8 min_op_temp; + u8 op_temp_warn; + u8 temperature; + u8 type; + #define VDA_TEMP_TYPE_CPU 1 + + u8 reserved[106]; +}; + + +struct __packed atto_vda_fan_info { + u8 fan_index; + u8 status; + #define VDA_FAN_STAT_UNKNOWN 0 + #define VDA_FAN_STAT_NORMAL 1 + #define VDA_FAN_STAT_FAIL 2 + + u16 crit_pvdafaninfothreshold; + u16 warn_threshold; + u16 speed; + u8 reserved[104]; +}; + + +/* VDA management commands */ + +#define VDAMGT_DEV_SCAN 0x00 +#define VDAMGT_DEV_INFO 0x01 +#define VDAMGT_DEV_CLEAN 0x02 +#define VDAMGT_DEV_IDENTIFY 0x03 +#define VDAMGT_DEV_IDENTSTOP 0x04 +#define VDAMGT_DEV_PT_INFO 0x05 +#define VDAMGT_DEV_FEATURES 0x06 +#define VDAMGT_DEV_PT_FEATURES 0x07 +#define VDAMGT_DEV_HEALTH_REQ 0x08 +#define VDAMGT_DEV_METRICS 0x09 +#define VDAMGT_DEV_INFO2 0x0A +#define VDAMGT_DEV_OPERATION 0x0B +#define VDAMGT_DEV_INFO2_BYADDR 0x0C +#define VDAMGT_GRP_INFO 0x10 +#define VDAMGT_GRP_CREATE 0x11 +#define VDAMGT_GRP_DELETE 0x12 +#define VDAMGT_ADD_STORAGE 0x13 +#define VDAMGT_MEMBER_ADD 0x14 +#define VDAMGT_GRP_COMMIT 0x15 +#define VDAMGT_GRP_REBUILD 0x16 +#define VDAMGT_GRP_COMMIT_INIT 0x17 +#define VDAMGT_QUICK_RAID 0x18 +#define VDAMGT_GRP_FEATURES 0x19 +#define VDAMGT_GRP_COMMIT_INIT_AUTOMAP 0x1A +#define VDAMGT_QUICK_RAID_INIT_AUTOMAP 0x1B +#define VDAMGT_GRP_OPERATION 0x1C +#define VDAMGT_CFG_SAVE 0x20 +#define VDAMGT_LAST_ERROR 0x21 +#define VDAMGT_ADAP_INFO 0x22 +#define VDAMGT_ADAP_FEATURES 0x23 +#define VDAMGT_TEMP_INFO 0x24 +#define VDAMGT_FAN_INFO 0x25 +#define VDAMGT_PART_INFO 0x30 +#define VDAMGT_PART_MAP 0x31 +#define VDAMGT_PART_UNMAP 0x32 +#define VDAMGT_PART_AUTOMAP 0x33 +#define VDAMGT_PART_SPLIT 0x34 +#define VDAMGT_PART_MERGE 0x35 +#define VDAMGT_SPARE_LIST 0x40 +#define VDAMGT_SPARE_ADD 0x41 +#define VDAMGT_SPARE_REMOVE 0x42 +#define VDAMGT_LOCAL_SPARE_ADD 0x43 +#define VDAMGT_SCHEDULE_EVENT 0x50 +#define VDAMGT_SCHEDULE_INFO 0x51 +#define VDAMGT_NVCACHE_INFO 0x60 +#define VDAMGT_NVCACHE_SET 0x61 +#define VDAMGT_BUZZER_INFO 0x70 +#define VDAMGT_BUZZER_SET 0x71 + + +struct __packed atto_vda_ae_hdr { + u8 bylength; + u8 byflags; + #define VDAAE_HDRF_EVENT_ACK 0x01 + + u8 byversion; + #define VDAAE_HDR_VER_0 0 + + u8 bytype; + #define VDAAE_HDR_TYPE_RAID 1 + #define VDAAE_HDR_TYPE_LU 2 + #define VDAAE_HDR_TYPE_DISK 3 + #define VDAAE_HDR_TYPE_RESET 4 + #define VDAAE_HDR_TYPE_LOG_INFO 5 + #define VDAAE_HDR_TYPE_LOG_WARN 6 + #define VDAAE_HDR_TYPE_LOG_CRIT 7 + #define VDAAE_HDR_TYPE_LOG_FAIL 8 + #define VDAAE_HDR_TYPE_NVC 9 + #define VDAAE_HDR_TYPE_TLG_INFO 10 + #define VDAAE_HDR_TYPE_TLG_WARN 11 + #define VDAAE_HDR_TYPE_TLG_CRIT 12 + #define VDAAE_HDR_TYPE_PWRMGT 13 + #define VDAAE_HDR_TYPE_MUTE 14 + #define VDAAE_HDR_TYPE_DEV 15 +}; + + +struct __packed atto_vda_ae_raid { + struct atto_vda_ae_hdr hdr; + u32 dwflags; + #define VDAAE_GROUP_STATE 0x00000001 + #define VDAAE_RBLD_STATE 0x00000002 + #define VDAAE_RBLD_PROG 0x00000004 + #define VDAAE_MEMBER_CHG 0x00000008 + #define VDAAE_PART_CHG 0x00000010 + #define VDAAE_MEM_STATE_CHG 0x00000020 + + u8 bygroup_state; + #define VDAAE_RAID_INVALID 0 + #define VDAAE_RAID_NEW 1 + #define VDAAE_RAID_WAITING 2 + #define VDAAE_RAID_ONLINE 3 + #define VDAAE_RAID_DEGRADED 4 + #define VDAAE_RAID_OFFLINE 5 + #define VDAAE_RAID_DELETED 6 + #define VDAAE_RAID_BASIC 7 + #define VDAAE_RAID_EXTREME 8 + #define VDAAE_RAID_UNKNOWN 9 + + u8 byrebuild_state; + #define VDAAE_RBLD_NONE 0 + #define VDAAE_RBLD_REBUILD 1 + #define VDAAE_RBLD_ERASE 2 + #define VDAAE_RBLD_PATTERN 3 + #define VDAAE_RBLD_CONV 4 + #define VDAAE_RBLD_FULL_INIT 5 + #define VDAAE_RBLD_QUICK_INIT 6 + #define VDAAE_RBLD_SECT_SCAN 7 + #define VDAAE_RBLD_SECT_SCAN_PARITY 8 + #define VDAAE_RBLD_SECT_SCAN_PARITY_FIX 9 + #define VDAAE_RBLD_RECOV_REBUILD 10 + #define VDAAE_RBLD_UNKNOWN 11 + + u8 byrebuild_progress; + u8 op_status; + #define VDAAE_GRPOPSTAT_MASK 0x0F + #define VDAAE_GRPOPSTAT_INVALID 0x00 + #define VDAAE_GRPOPSTAT_OK 0x01 + #define VDAAE_GRPOPSTAT_FAULTED 0x02 + #define VDAAE_GRPOPSTAT_HALTED 0x03 + #define VDAAE_GRPOPSTAT_INT 0x04 + #define VDAAE_GRPOPPROC_MASK 0xF0 + #define VDAAE_GRPOPPROC_STARTABLE 0x10 + #define VDAAE_GRPOPPROC_CANCELABLE 0x20 + #define VDAAE_GRPOPPROC_RESUMABLE 0x40 + #define VDAAE_GRPOPPROC_HALTABLE 0x80 + char acname[15]; + u8 byreserved; + u8 byreserved2[0x80 - 0x1C]; +}; + + +struct __packed atto_vda_ae_lu_tgt_lun { + u16 wtarget_id; + u8 bylun; + u8 byreserved; +}; + + +struct __packed atto_vda_ae_lu_tgt_lun_raid { + u16 wtarget_id; + u8 bylun; + u8 byreserved; + u32 dwinterleave; + u32 dwblock_size; +}; + + +struct __packed atto_vda_ae_lu { + struct atto_vda_ae_hdr hdr; + u32 dwevent; + #define VDAAE_LU_DISC 0x00000001 + #define VDAAE_LU_LOST 0x00000002 + #define VDAAE_LU_STATE 0x00000004 + #define VDAAE_LU_PASSTHROUGH 0x10000000 + #define VDAAE_LU_PHYS_ID 0x20000000 + + u8 bystate; + #define VDAAE_LU_UNDEFINED 0 + #define VDAAE_LU_NOT_PRESENT 1 + #define VDAAE_LU_OFFLINE 2 + #define VDAAE_LU_ONLINE 3 + #define VDAAE_LU_DEGRADED 4 + #define VDAAE_LU_FACTORY_DISABLED 5 + #define VDAAE_LU_DELETED 6 + #define VDAAE_LU_BUSSCAN 7 + #define VDAAE_LU_UNKNOWN 8 + + u8 byreserved; + u16 wphys_target_id; + + union { + struct atto_vda_ae_lu_tgt_lun tgtlun; + struct atto_vda_ae_lu_tgt_lun_raid tgtlun_raid; + } id; +}; + + +struct __packed atto_vda_ae_disk { + struct atto_vda_ae_hdr hdr; +}; + + +#define VDAAE_LOG_STRSZ 64 + +struct __packed atto_vda_ae_log { + struct atto_vda_ae_hdr hdr; + char aclog_ascii[VDAAE_LOG_STRSZ]; +}; + + +#define VDAAE_TLG_STRSZ 56 + +struct __packed atto_vda_ae_timestamp_log { + struct atto_vda_ae_hdr hdr; + u32 dwtimestamp; + char aclog_ascii[VDAAE_TLG_STRSZ]; +}; + + +struct __packed atto_vda_ae_nvc { + struct atto_vda_ae_hdr hdr; +}; + + +struct __packed atto_vda_ae_dev { + struct atto_vda_ae_hdr hdr; + struct atto_dev_addr devaddr; +}; + + +union atto_vda_ae { + struct atto_vda_ae_hdr hdr; + struct atto_vda_ae_disk disk; + struct atto_vda_ae_lu lu; + struct atto_vda_ae_raid raid; + struct atto_vda_ae_log log; + struct atto_vda_ae_timestamp_log tslog; + struct atto_vda_ae_nvc nvcache; + struct atto_vda_ae_dev dev; +}; + + +struct __packed atto_vda_date_and_time { + u8 flags; + #define VDA_DT_DAY_MASK 0x07 + #define VDA_DT_DAY_NONE 0x00 + #define VDA_DT_DAY_SUN 0x01 + #define VDA_DT_DAY_MON 0x02 + #define VDA_DT_DAY_TUE 0x03 + #define VDA_DT_DAY_WED 0x04 + #define VDA_DT_DAY_THU 0x05 + #define VDA_DT_DAY_FRI 0x06 + #define VDA_DT_DAY_SAT 0x07 + #define VDA_DT_PM 0x40 + #define VDA_DT_MILITARY 0x80 + + u8 seconds; + u8 minutes; + u8 hours; + u8 day; + u8 month; + u16 year; +}; + +#define SGE_LEN_LIMIT 0x003FFFFF /*! mask of segment length */ +#define SGE_LEN_MAX 0x003FF000 /*! maximum segment length */ +#define SGE_LAST 0x01000000 /*! last entry */ +#define SGE_ADDR_64 0x04000000 /*! 64-bit addressing flag */ +#define SGE_CHAIN 0x80000000 /*! chain descriptor flag */ +#define SGE_CHAIN_LEN 0x0000FFFF /*! mask of length in chain entries */ +#define SGE_CHAIN_SZ 0x00FF0000 /*! mask of size of chained buffer */ + + +struct __packed atto_vda_cfg_init { + struct atto_vda_date_and_time date_time; + u32 sgl_page_size; + u32 vda_version; + u32 fw_version; + u32 fw_build; + u32 fw_release; + u32 epoch_time; + u32 ioctl_tunnel; + #define VDA_ITF_MEM_RW 0x00000001 + #define VDA_ITF_TRACE 0x00000002 + #define VDA_ITF_SCSI_PASS_THRU 0x00000004 + #define VDA_ITF_GET_DEV_ADDR 0x00000008 + #define VDA_ITF_PHY_CTRL 0x00000010 + #define VDA_ITF_CONN_CTRL 0x00000020 + #define VDA_ITF_GET_DEV_INFO 0x00000040 + + u32 num_targets_backend; + u8 reserved[0x48]; +}; + + +/* configuration commands */ + +#define VDA_CFG_INIT 0x00 +#define VDA_CFG_GET_INIT 0x01 +#define VDA_CFG_GET_INIT2 0x02 + + +/*! physical region descriptor (PRD) aka scatter/gather entry */ + +struct __packed atto_physical_region_description { + u64 address; + u32 ctl_len; + #define PRD_LEN_LIMIT 0x003FFFFF + #define PRD_LEN_MAX 0x003FF000 + #define PRD_NXT_PRD_CNT 0x0000007F + #define PRD_CHAIN 0x01000000 + #define PRD_DATA 0x00000000 + #define PRD_INT_SEL 0xF0000000 + #define PRD_INT_SEL_F0 0x00000000 + #define PRD_INT_SEL_F1 0x40000000 + #define PRD_INT_SEL_F2 0x80000000 + #define PRD_INT_SEL_F3 0xc0000000 + #define PRD_INT_SEL_SRAM 0x10000000 + #define PRD_INT_SEL_PBSR 0x20000000 + +}; + +/* Request types. NOTE that ALL requests have the same layout for the first + * few bytes. + */ +struct __packed atto_vda_req_header { + u32 length; + u8 function; + u8 variable1; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; +}; + + +#define FCP_CDB_SIZE 16 + +struct __packed atto_vda_scsi_req { + u32 length; + u8 function; /* VDA_FUNC_SCSI */ + u8 sense_len; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + u32 flags; + #define FCP_CMND_LUN_MASK 0x000000FF + #define FCP_CMND_TA_MASK 0x00000700 + #define FCP_CMND_TA_SIMPL_Q 0x00000000 + #define FCP_CMND_TA_HEAD_Q 0x00000100 + #define FCP_CMND_TA_ORDRD_Q 0x00000200 + #define FCP_CMND_TA_ACA 0x00000400 + #define FCP_CMND_PRI_MASK 0x00007800 + #define FCP_CMND_TM_MASK 0x00FF0000 + #define FCP_CMND_ATS 0x00020000 + #define FCP_CMND_CTS 0x00040000 + #define FCP_CMND_LRS 0x00100000 + #define FCP_CMND_TRS 0x00200000 + #define FCP_CMND_CLA 0x00400000 + #define FCP_CMND_TRM 0x00800000 + #define FCP_CMND_DATA_DIR 0x03000000 + #define FCP_CMND_WRD 0x01000000 + #define FCP_CMND_RDD 0x02000000 + + u8 cdb[FCP_CDB_SIZE]; + union { + struct __packed { + u64 ppsense_buf; + u16 target_id; + u8 iblk_cnt_prd; + u8 reserved; + }; + + struct atto_physical_region_description sense_buff_prd; + }; + + union { + struct atto_vda_sge sge[1]; + + u32 abort_handle; + u32 dwords[245]; + struct atto_physical_region_description prd[1]; + } u; +}; + + +struct __packed atto_vda_flash_req { + u32 length; + u8 function; /* VDA_FUNC_FLASH */ + u8 sub_func; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + u32 flash_addr; + u8 checksum; + u8 rsvd[3]; + + union { + struct { + char file_name[16]; /* 8.3 fname, NULL term, wc=* */ + struct atto_vda_sge sge[1]; + } file; + + struct atto_vda_sge sge[1]; + struct atto_physical_region_description prde[2]; + } data; +}; + + +struct __packed atto_vda_diag_req { + u32 length; + u8 function; /* VDA_FUNC_DIAG */ + u8 sub_func; + #define VDA_DIAG_STATUS 0x00 + #define VDA_DIAG_RESET 0x01 + #define VDA_DIAG_PAUSE 0x02 + #define VDA_DIAG_RESUME 0x03 + #define VDA_DIAG_READ 0x04 + #define VDA_DIAG_WRITE 0x05 + + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + u32 rsvd; + u64 local_addr; + struct atto_vda_sge sge[1]; +}; + + +struct __packed atto_vda_ae_req { + u32 length; + u8 function; /* VDA_FUNC_AE */ + u8 reserved1; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + + union { + struct atto_vda_sge sge[1]; + struct atto_physical_region_description prde[1]; + }; +}; + + +struct __packed atto_vda_cli_req { + u32 length; + u8 function; /* VDA_FUNC_CLI */ + u8 reserved1; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + u32 cmd_rsp_len; + struct atto_vda_sge sge[1]; +}; + + +struct __packed atto_vda_ioctl_req { + u32 length; + u8 function; /* VDA_FUNC_IOCTL */ + u8 sub_func; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + + union { + struct atto_vda_sge reserved_sge; + struct atto_physical_region_description reserved_prde; + }; + + union { + struct { + u32 ctrl_code; + u16 target_id; + u8 lun; + u8 reserved; + } csmi; + }; + + union { + struct atto_vda_sge sge[1]; + struct atto_physical_region_description prde[1]; + }; +}; + + +struct __packed atto_vda_cfg_req { + u32 length; + u8 function; /* VDA_FUNC_CFG */ + u8 sub_func; + u8 rsvd1; + u8 sg_list_offset; + u32 handle; + + union { + u8 bytes[116]; + struct atto_vda_cfg_init init; + struct atto_vda_sge sge; + struct atto_physical_region_description prde; + } data; +}; + + +struct __packed atto_vda_mgmt_req { + u32 length; + u8 function; /* VDA_FUNC_MGT */ + u8 mgt_func; + u8 chain_offset; + u8 sg_list_offset; + u32 handle; + u8 scan_generation; + u8 payld_sglst_offset; + u16 dev_index; + u32 payld_length; + u32 pad; + union { + struct atto_vda_sge sge[2]; + struct atto_physical_region_description prde[2]; + }; + struct atto_vda_sge payld_sge[1]; +}; + + +union atto_vda_req { + struct atto_vda_scsi_req scsi; + struct atto_vda_flash_req flash; + struct atto_vda_diag_req diag; + struct atto_vda_ae_req ae; + struct atto_vda_cli_req cli; + struct atto_vda_ioctl_req ioctl; + struct atto_vda_cfg_req cfg; + struct atto_vda_mgmt_req mgt; + u8 bytes[1024]; +}; + +/* Outbound response structures */ + +struct __packed atto_vda_scsi_rsp { + u8 scsi_stat; + u8 sense_len; + u8 rsvd[2]; + u32 residual_length; +}; + +struct __packed atto_vda_flash_rsp { + u32 file_size; +}; + +struct __packed atto_vda_ae_rsp { + u32 length; +}; + +struct __packed atto_vda_cli_rsp { + u32 cmd_rsp_len; +}; + +struct __packed atto_vda_ioctl_rsp { + union { + struct { + u32 csmi_status; + u16 target_id; + u8 lun; + u8 reserved; + } csmi; + }; +}; + +struct __packed atto_vda_cfg_rsp { + u16 vda_version; + u16 fw_release; + u32 fw_build; +}; + +struct __packed atto_vda_mgmt_rsp { + u32 length; + u16 dev_index; + u8 scan_generation; +}; + +union atto_vda_func_rsp { + struct atto_vda_scsi_rsp scsi_rsp; + struct atto_vda_flash_rsp flash_rsp; + struct atto_vda_ae_rsp ae_rsp; + struct atto_vda_cli_rsp cli_rsp; + struct atto_vda_ioctl_rsp ioctl_rsp; + struct atto_vda_cfg_rsp cfg_rsp; + struct atto_vda_mgmt_rsp mgt_rsp; + u32 dwords[2]; +}; + +struct __packed atto_vda_ob_rsp { + u32 handle; + u8 req_stat; + u8 rsvd[3]; + + union atto_vda_func_rsp + func_rsp; +}; + +struct __packed atto_vda_ae_data { + u8 event_data[256]; +}; + +struct __packed atto_vda_mgmt_data { + union { + u8 bytes[112]; + struct atto_vda_devinfo dev_info; + struct atto_vda_grp_info grp_info; + struct atto_vdapart_info part_info; + struct atto_vda_dh_info dev_health_info; + struct atto_vda_metrics_info metrics_info; + struct atto_vda_schedule_info sched_info; + struct atto_vda_n_vcache_info nvcache_info; + struct atto_vda_buzzer_info buzzer_info; + } data; +}; + +union atto_vda_rsp_data { + struct atto_vda_ae_data ae_data; + struct atto_vda_mgmt_data mgt_data; + u8 sense_data[252]; + #define SENSE_DATA_SZ 252; + u8 bytes[256]; +}; + +#endif diff --git a/drivers/scsi/esas2r/esas2r.h b/drivers/scsi/esas2r/esas2r.h new file mode 100644 index 000000000000..0838e265e0b9 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r.h @@ -0,0 +1,1441 @@ +/* + * linux/drivers/scsi/esas2r/esas2r.h + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/proc_fs.h> +#include <linux/workqueue.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/vmalloc.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_eh.h> +#include <scsi/scsi_tcq.h> + +#include "esas2r_log.h" +#include "atioctl.h" +#include "atvda.h" + +#ifndef ESAS2R_H +#define ESAS2R_H + +/* Global Variables */ +extern struct esas2r_adapter *esas2r_adapters[]; +extern u8 *esas2r_buffered_ioctl; +extern dma_addr_t esas2r_buffered_ioctl_addr; +extern u32 esas2r_buffered_ioctl_size; +extern struct pci_dev *esas2r_buffered_ioctl_pcid; +#define SGL_PG_SZ_MIN 64 +#define SGL_PG_SZ_MAX 1024 +extern int sgl_page_size; +#define NUM_SGL_MIN 8 +#define NUM_SGL_MAX 2048 +extern int num_sg_lists; +#define NUM_REQ_MIN 4 +#define NUM_REQ_MAX 256 +extern int num_requests; +#define NUM_AE_MIN 2 +#define NUM_AE_MAX 8 +extern int num_ae_requests; +extern int cmd_per_lun; +extern int can_queue; +extern int esas2r_max_sectors; +extern int sg_tablesize; +extern int interrupt_mode; +extern int num_io_requests; + +/* Macro defintions */ +#define ESAS2R_MAX_ID 255 +#define MAX_ADAPTERS 32 +#define ESAS2R_DRVR_NAME "esas2r" +#define ESAS2R_LONGNAME "ATTO ExpressSAS 6GB RAID Adapter" +#define ESAS2R_MAX_DEVICES 32 +#define ATTONODE_NAME "ATTONode" +#define ESAS2R_MAJOR_REV 1 +#define ESAS2R_MINOR_REV 00 +#define ESAS2R_VERSION_STR DEFINED_NUM_TO_STR(ESAS2R_MAJOR_REV) "." \ + DEFINED_NUM_TO_STR(ESAS2R_MINOR_REV) +#define ESAS2R_COPYRIGHT_YEARS "2001-2013" +#define ESAS2R_DEFAULT_SGL_PAGE_SIZE 384 +#define ESAS2R_DEFAULT_CMD_PER_LUN 64 +#define ESAS2R_DEFAULT_NUM_SG_LISTS 1024 +#define DEFINED_NUM_TO_STR(num) NUM_TO_STR(num) +#define NUM_TO_STR(num) #num + +#define ESAS2R_SGL_ALIGN 16 +#define ESAS2R_LIST_ALIGN 16 +#define ESAS2R_LIST_EXTRA ESAS2R_NUM_EXTRA +#define ESAS2R_DATA_BUF_LEN 256 +#define ESAS2R_DEFAULT_TMO 5000 +#define ESAS2R_DISC_BUF_LEN 512 +#define ESAS2R_FWCOREDUMP_SZ 0x80000 +#define ESAS2R_NUM_PHYS 8 +#define ESAS2R_TARG_ID_INV 0xFFFF +#define ESAS2R_INT_STS_MASK MU_INTSTAT_MASK +#define ESAS2R_INT_ENB_MASK MU_INTSTAT_MASK +#define ESAS2R_INT_DIS_MASK 0 +#define ESAS2R_MAX_TARGETS 256 +#define ESAS2R_KOBJ_NAME_LEN 20 + +/* u16 (WORD) component macros */ +#define LOBYTE(w) ((u8)(u16)(w)) +#define HIBYTE(w) ((u8)(((u16)(w)) >> 8)) +#define MAKEWORD(lo, hi) ((u16)((u8)(lo) | ((u16)(u8)(hi) << 8))) + +/* u32 (DWORD) component macros */ +#define LOWORD(d) ((u16)(u32)(d)) +#define HIWORD(d) ((u16)(((u32)(d)) >> 16)) +#define MAKEDWORD(lo, hi) ((u32)((u16)(lo) | ((u32)(u16)(hi) << 16))) + +/* macro to get the lowest nonzero bit of a value */ +#define LOBIT(x) ((x) & (0 - (x))) + +/* These functions are provided to access the chip's control registers. + * The register is specified by its byte offset from the register base + * for the adapter. + */ +#define esas2r_read_register_dword(a, reg) \ + readl((void __iomem *)a->regs + (reg) + MW_REG_OFFSET_HWREG) + +#define esas2r_write_register_dword(a, reg, data) \ + writel(data, (void __iomem *)(a->regs + (reg) + MW_REG_OFFSET_HWREG)) + +#define esas2r_flush_register_dword(a, r) esas2r_read_register_dword(a, r) + +/* This function is provided to access the chip's data window. The + * register is specified by its byte offset from the window base + * for the adapter. + */ +#define esas2r_read_data_byte(a, reg) \ + readb((void __iomem *)a->data_window + (reg)) + +/* ATTO vendor and device Ids */ +#define ATTO_VENDOR_ID 0x117C +#define ATTO_DID_INTEL_IOP348 0x002C +#define ATTO_DID_MV_88RC9580 0x0049 +#define ATTO_DID_MV_88RC9580TS 0x0066 +#define ATTO_DID_MV_88RC9580TSE 0x0067 +#define ATTO_DID_MV_88RC9580TL 0x0068 + +/* ATTO subsystem device Ids */ +#define ATTO_SSDID_TBT 0x4000 +#define ATTO_TSSC_3808 0x4066 +#define ATTO_TSSC_3808E 0x4067 +#define ATTO_TLSH_1068 0x4068 +#define ATTO_ESAS_R680 0x0049 +#define ATTO_ESAS_R608 0x004A +#define ATTO_ESAS_R60F 0x004B +#define ATTO_ESAS_R6F0 0x004C +#define ATTO_ESAS_R644 0x004D +#define ATTO_ESAS_R648 0x004E + +/* + * flash definitions & structures + * define the code types + */ +#define FBT_CPYR 0xAA00 +#define FBT_SETUP 0xAA02 +#define FBT_FLASH_VER 0xAA04 + +/* offsets to various locations in flash */ +#define FLS_OFFSET_BOOT (u32)(0x00700000) +#define FLS_OFFSET_NVR (u32)(0x007C0000) +#define FLS_OFFSET_CPYR FLS_OFFSET_NVR +#define FLS_LENGTH_BOOT (FLS_OFFSET_CPYR - FLS_OFFSET_BOOT) +#define FLS_BLOCK_SIZE (u32)(0x00020000) +#define FI_NVR_2KB 0x0800 +#define FI_NVR_8KB 0x2000 +#define FM_BUF_SZ 0x800 + +/* + * marvell frey (88R9580) register definitions + * chip revision identifiers + */ +#define MVR_FREY_B2 0xB2 + +/* + * memory window definitions. window 0 is the data window with definitions + * of MW_DATA_XXX. window 1 is the register window with definitions of + * MW_REG_XXX. + */ +#define MW_REG_WINDOW_SIZE (u32)(0x00040000) +#define MW_REG_OFFSET_HWREG (u32)(0x00000000) +#define MW_REG_OFFSET_PCI (u32)(0x00008000) +#define MW_REG_PCI_HWREG_DELTA (MW_REG_OFFSET_PCI - MW_REG_OFFSET_HWREG) +#define MW_DATA_WINDOW_SIZE (u32)(0x00020000) +#define MW_DATA_ADDR_SER_FLASH (u32)(0xEC000000) +#define MW_DATA_ADDR_SRAM (u32)(0xF4000000) +#define MW_DATA_ADDR_PAR_FLASH (u32)(0xFC000000) + +/* + * the following registers are for the communication + * list interface (AKA message unit (MU)) + */ +#define MU_IN_LIST_ADDR_LO (u32)(0x00004000) +#define MU_IN_LIST_ADDR_HI (u32)(0x00004004) + +#define MU_IN_LIST_WRITE (u32)(0x00004018) + #define MU_ILW_TOGGLE (u32)(0x00004000) + +#define MU_IN_LIST_READ (u32)(0x0000401C) + #define MU_ILR_TOGGLE (u32)(0x00004000) + #define MU_ILIC_LIST (u32)(0x0000000F) + #define MU_ILIC_LIST_F0 (u32)(0x00000000) + #define MU_ILIC_DEST (u32)(0x00000F00) + #define MU_ILIC_DEST_DDR (u32)(0x00000200) +#define MU_IN_LIST_IFC_CONFIG (u32)(0x00004028) + +#define MU_IN_LIST_CONFIG (u32)(0x0000402C) + #define MU_ILC_ENABLE (u32)(0x00000001) + #define MU_ILC_ENTRY_MASK (u32)(0x000000F0) + #define MU_ILC_ENTRY_4_DW (u32)(0x00000020) + #define MU_ILC_DYNAMIC_SRC (u32)(0x00008000) + #define MU_ILC_NUMBER_MASK (u32)(0x7FFF0000) + #define MU_ILC_NUMBER_SHIFT 16 + +#define MU_OUT_LIST_ADDR_LO (u32)(0x00004050) +#define MU_OUT_LIST_ADDR_HI (u32)(0x00004054) + +#define MU_OUT_LIST_COPY_PTR_LO (u32)(0x00004058) +#define MU_OUT_LIST_COPY_PTR_HI (u32)(0x0000405C) + +#define MU_OUT_LIST_WRITE (u32)(0x00004068) + #define MU_OLW_TOGGLE (u32)(0x00004000) + +#define MU_OUT_LIST_COPY (u32)(0x0000406C) + #define MU_OLC_TOGGLE (u32)(0x00004000) + #define MU_OLC_WRT_PTR (u32)(0x00003FFF) + +#define MU_OUT_LIST_IFC_CONFIG (u32)(0x00004078) + #define MU_OLIC_LIST (u32)(0x0000000F) + #define MU_OLIC_LIST_F0 (u32)(0x00000000) + #define MU_OLIC_SOURCE (u32)(0x00000F00) + #define MU_OLIC_SOURCE_DDR (u32)(0x00000200) + +#define MU_OUT_LIST_CONFIG (u32)(0x0000407C) + #define MU_OLC_ENABLE (u32)(0x00000001) + #define MU_OLC_ENTRY_MASK (u32)(0x000000F0) + #define MU_OLC_ENTRY_4_DW (u32)(0x00000020) + #define MU_OLC_NUMBER_MASK (u32)(0x7FFF0000) + #define MU_OLC_NUMBER_SHIFT 16 + +#define MU_OUT_LIST_INT_STAT (u32)(0x00004088) + #define MU_OLIS_INT (u32)(0x00000001) + +#define MU_OUT_LIST_INT_MASK (u32)(0x0000408C) + #define MU_OLIS_MASK (u32)(0x00000001) + +/* + * the maximum size of the communication lists is two greater than the + * maximum amount of VDA requests. the extra are to prevent queue overflow. + */ +#define ESAS2R_MAX_NUM_REQS 256 +#define ESAS2R_NUM_EXTRA 2 +#define ESAS2R_MAX_COMM_LIST_SIZE (ESAS2R_MAX_NUM_REQS + ESAS2R_NUM_EXTRA) + +/* + * the following registers are for the CPU interface + */ +#define MU_CTL_STATUS_IN (u32)(0x00010108) + #define MU_CTL_IN_FULL_RST (u32)(0x00000020) +#define MU_CTL_STATUS_IN_B2 (u32)(0x00010130) + #define MU_CTL_IN_FULL_RST2 (u32)(0x80000000) +#define MU_DOORBELL_IN (u32)(0x00010460) + #define DRBL_RESET_BUS (u32)(0x00000002) + #define DRBL_PAUSE_AE (u32)(0x00000004) + #define DRBL_RESUME_AE (u32)(0x00000008) + #define DRBL_MSG_IFC_DOWN (u32)(0x00000010) + #define DRBL_FLASH_REQ (u32)(0x00000020) + #define DRBL_FLASH_DONE (u32)(0x00000040) + #define DRBL_FORCE_INT (u32)(0x00000080) + #define DRBL_MSG_IFC_INIT (u32)(0x00000100) + #define DRBL_POWER_DOWN (u32)(0x00000200) + #define DRBL_DRV_VER_1 (u32)(0x00010000) + #define DRBL_DRV_VER DRBL_DRV_VER_1 +#define MU_DOORBELL_IN_ENB (u32)(0x00010464) +#define MU_DOORBELL_OUT (u32)(0x00010480) + #define DRBL_PANIC_REASON_MASK (u32)(0x00F00000) + #define DRBL_UNUSED_HANDLER (u32)(0x00100000) + #define DRBL_UNDEF_INSTR (u32)(0x00200000) + #define DRBL_PREFETCH_ABORT (u32)(0x00300000) + #define DRBL_DATA_ABORT (u32)(0x00400000) + #define DRBL_JUMP_TO_ZERO (u32)(0x00500000) + #define DRBL_FW_RESET (u32)(0x00080000) + #define DRBL_FW_VER_MSK (u32)(0x00070000) + #define DRBL_FW_VER_0 (u32)(0x00000000) + #define DRBL_FW_VER_1 (u32)(0x00010000) + #define DRBL_FW_VER DRBL_FW_VER_1 +#define MU_DOORBELL_OUT_ENB (u32)(0x00010484) + #define DRBL_ENB_MASK (u32)(0x00F803FF) +#define MU_INT_STATUS_OUT (u32)(0x00010200) + #define MU_INTSTAT_POST_OUT (u32)(0x00000010) + #define MU_INTSTAT_DRBL_IN (u32)(0x00000100) + #define MU_INTSTAT_DRBL (u32)(0x00001000) + #define MU_INTSTAT_MASK (u32)(0x00001010) +#define MU_INT_MASK_OUT (u32)(0x0001020C) + +/* PCI express registers accessed via window 1 */ +#define MVR_PCI_WIN1_REMAP (u32)(0x00008438) + #define MVRPW1R_ENABLE (u32)(0x00000001) + + +/* structures */ + +/* inbound list dynamic source entry */ +struct esas2r_inbound_list_source_entry { + u64 address; + u32 length; + #define HWILSE_INTERFACE_F0 0x00000000 + u32 reserved; +}; + +/* PCI data structure in expansion ROM images */ +struct __packed esas2r_boot_header { + char signature[4]; + u16 vendor_id; + u16 device_id; + u16 VPD; + u16 struct_length; + u8 struct_revision; + u8 class_code[3]; + u16 image_length; + u16 code_revision; + u8 code_type; + #define CODE_TYPE_PC 0 + #define CODE_TYPE_OPEN 1 + #define CODE_TYPE_EFI 3 + u8 indicator; + #define INDICATOR_LAST 0x80 + u8 reserved[2]; +}; + +struct __packed esas2r_boot_image { + u16 signature; + u8 reserved[22]; + u16 header_offset; + u16 pnp_offset; +}; + +struct __packed esas2r_pc_image { + u16 signature; + u8 length; + u8 entry_point[3]; + u8 checksum; + u16 image_end; + u16 min_size; + u8 rom_flags; + u8 reserved[12]; + u16 header_offset; + u16 pnp_offset; + struct esas2r_boot_header boot_image; +}; + +struct __packed esas2r_efi_image { + u16 signature; + u16 length; + u32 efi_signature; + #define EFI_ROM_SIG 0x00000EF1 + u16 image_type; + #define EFI_IMAGE_APP 10 + #define EFI_IMAGE_BSD 11 + #define EFI_IMAGE_RTD 12 + u16 machine_type; + #define EFI_MACHINE_IA32 0x014c + #define EFI_MACHINE_IA64 0x0200 + #define EFI_MACHINE_X64 0x8664 + #define EFI_MACHINE_EBC 0x0EBC + u16 compression; + #define EFI_UNCOMPRESSED 0x0000 + #define EFI_COMPRESSED 0x0001 + u8 reserved[8]; + u16 efi_offset; + u16 header_offset; + u16 reserved2; + struct esas2r_boot_header boot_image; +}; + +struct esas2r_adapter; +struct esas2r_sg_context; +struct esas2r_request; + +typedef void (*RQCALLBK) (struct esas2r_adapter *a, + struct esas2r_request *rq); +typedef bool (*RQBUILDSGL) (struct esas2r_adapter *a, + struct esas2r_sg_context *sgc); + +struct esas2r_component_header { + u8 img_type; + #define CH_IT_FW 0x00 + #define CH_IT_NVR 0x01 + #define CH_IT_BIOS 0x02 + #define CH_IT_MAC 0x03 + #define CH_IT_CFG 0x04 + #define CH_IT_EFI 0x05 + u8 status; + #define CH_STAT_PENDING 0xff + #define CH_STAT_FAILED 0x00 + #define CH_STAT_SUCCESS 0x01 + #define CH_STAT_RETRY 0x02 + #define CH_STAT_INVALID 0x03 + u8 pad[2]; + u32 version; + u32 length; + u32 image_offset; +}; + +#define FI_REL_VER_SZ 16 + +struct esas2r_flash_img_v0 { + u8 fi_version; + #define FI_VERSION_0 00 + u8 status; + u8 adap_typ; + u8 action; + u32 length; + u16 checksum; + u16 driver_error; + u16 flags; + u16 num_comps; + #define FI_NUM_COMPS_V0 5 + u8 rel_version[FI_REL_VER_SZ]; + struct esas2r_component_header cmp_hdr[FI_NUM_COMPS_V0]; + u8 scratch_buf[FM_BUF_SZ]; +}; + +struct esas2r_flash_img { + u8 fi_version; + #define FI_VERSION_1 01 + u8 status; + #define FI_STAT_SUCCESS 0x00 + #define FI_STAT_FAILED 0x01 + #define FI_STAT_REBOOT 0x02 + #define FI_STAT_ADAPTYP 0x03 + #define FI_STAT_INVALID 0x04 + #define FI_STAT_CHKSUM 0x05 + #define FI_STAT_LENGTH 0x06 + #define FI_STAT_UNKNOWN 0x07 + #define FI_STAT_IMG_VER 0x08 + #define FI_STAT_BUSY 0x09 + #define FI_STAT_DUAL 0x0A + #define FI_STAT_MISSING 0x0B + #define FI_STAT_UNSUPP 0x0C + #define FI_STAT_ERASE 0x0D + #define FI_STAT_FLASH 0x0E + #define FI_STAT_DEGRADED 0x0F + u8 adap_typ; + #define FI_AT_UNKNWN 0xFF + #define FI_AT_SUN_LAKE 0x0B + #define FI_AT_MV_9580 0x0F + u8 action; + #define FI_ACT_DOWN 0x00 + #define FI_ACT_UP 0x01 + #define FI_ACT_UPSZ 0x02 + #define FI_ACT_MAX 0x02 + #define FI_ACT_DOWN1 0x80 + u32 length; + u16 checksum; + u16 driver_error; + u16 flags; + #define FI_FLG_NVR_DEF 0x0001 + u16 num_comps; + #define FI_NUM_COMPS_V1 6 + u8 rel_version[FI_REL_VER_SZ]; + struct esas2r_component_header cmp_hdr[FI_NUM_COMPS_V1]; + u8 scratch_buf[FM_BUF_SZ]; +}; + +/* definitions for flash script (FS) commands */ +struct esas2r_ioctlfs_command { + u8 command; + #define ESAS2R_FS_CMD_ERASE 0 + #define ESAS2R_FS_CMD_READ 1 + #define ESAS2R_FS_CMD_BEGINW 2 + #define ESAS2R_FS_CMD_WRITE 3 + #define ESAS2R_FS_CMD_COMMIT 4 + #define ESAS2R_FS_CMD_CANCEL 5 + u8 checksum; + u8 reserved[2]; + u32 flash_addr; + u32 length; + u32 image_offset; +}; + +struct esas2r_ioctl_fs { + u8 version; + #define ESAS2R_FS_VER 0 + u8 status; + u8 driver_error; + u8 adap_type; + #define ESAS2R_FS_AT_ESASRAID2 3 + #define ESAS2R_FS_AT_TSSASRAID2 4 + #define ESAS2R_FS_AT_TSSASRAID2E 5 + #define ESAS2R_FS_AT_TLSASHBA 6 + u8 driver_ver; + u8 reserved[11]; + struct esas2r_ioctlfs_command command; + u8 data[1]; +}; + +struct esas2r_sas_nvram { + u8 signature[4]; + u8 version; + #define SASNVR_VERSION_0 0x00 + #define SASNVR_VERSION SASNVR_VERSION_0 + u8 checksum; + #define SASNVR_CKSUM_SEED 0x5A + u8 max_lun_for_target; + u8 pci_latency; + #define SASNVR_PCILAT_DIS 0x00 + #define SASNVR_PCILAT_MIN 0x10 + #define SASNVR_PCILAT_MAX 0xF8 + u8 options1; + #define SASNVR1_BOOT_DRVR 0x01 + #define SASNVR1_BOOT_SCAN 0x02 + #define SASNVR1_DIS_PCI_MWI 0x04 + #define SASNVR1_FORCE_ORD_Q 0x08 + #define SASNVR1_CACHELINE_0 0x10 + #define SASNVR1_DIS_DEVSORT 0x20 + #define SASNVR1_PWR_MGT_EN 0x40 + #define SASNVR1_WIDEPORT 0x80 + u8 options2; + #define SASNVR2_SINGLE_BUS 0x01 + #define SASNVR2_SLOT_BIND 0x02 + #define SASNVR2_EXP_PROG 0x04 + #define SASNVR2_CMDTHR_LUN 0x08 + #define SASNVR2_HEARTBEAT 0x10 + #define SASNVR2_INT_CONNECT 0x20 + #define SASNVR2_SW_MUX_CTRL 0x40 + #define SASNVR2_DISABLE_NCQ 0x80 + u8 int_coalescing; + #define SASNVR_COAL_DIS 0x00 + #define SASNVR_COAL_LOW 0x01 + #define SASNVR_COAL_MED 0x02 + #define SASNVR_COAL_HI 0x03 + u8 cmd_throttle; + #define SASNVR_CMDTHR_NONE 0x00 + u8 dev_wait_time; + u8 dev_wait_count; + u8 spin_up_delay; + #define SASNVR_SPINUP_MAX 0x14 + u8 ssp_align_rate; + u8 sas_addr[8]; + u8 phy_speed[16]; + #define SASNVR_SPEED_AUTO 0x00 + #define SASNVR_SPEED_1_5GB 0x01 + #define SASNVR_SPEED_3GB 0x02 + #define SASNVR_SPEED_6GB 0x03 + #define SASNVR_SPEED_12GB 0x04 + u8 phy_mux[16]; + #define SASNVR_MUX_DISABLED 0x00 + #define SASNVR_MUX_1_5GB 0x01 + #define SASNVR_MUX_3GB 0x02 + #define SASNVR_MUX_6GB 0x03 + u8 phy_flags[16]; + #define SASNVR_PHF_DISABLED 0x01 + #define SASNVR_PHF_RD_ONLY 0x02 + u8 sort_type; + #define SASNVR_SORT_SAS_ADDR 0x00 + #define SASNVR_SORT_H308_CONN 0x01 + #define SASNVR_SORT_PHY_ID 0x02 + #define SASNVR_SORT_SLOT_ID 0x03 + u8 dpm_reqcmd_lmt; + u8 dpm_stndby_time; + u8 dpm_active_time; + u8 phy_target_id[16]; + #define SASNVR_PTI_DISABLED 0xFF + u8 virt_ses_mode; + #define SASNVR_VSMH_DISABLED 0x00 + u8 read_write_mode; + #define SASNVR_RWM_DEFAULT 0x00 + u8 link_down_to; + u8 reserved[0xA1]; +}; + +typedef u32 (*PGETPHYSADDR) (struct esas2r_sg_context *sgc, u64 *addr); + +struct esas2r_sg_context { + struct esas2r_adapter *adapter; + struct esas2r_request *first_req; + u32 length; + u8 *cur_offset; + PGETPHYSADDR get_phys_addr; + union { + struct { + struct atto_vda_sge *curr; + struct atto_vda_sge *last; + struct atto_vda_sge *limit; + struct atto_vda_sge *chain; + } a64; + struct { + struct atto_physical_region_description *curr; + struct atto_physical_region_description *chain; + u32 sgl_max_cnt; + u32 sge_cnt; + } prd; + } sge; + struct scatterlist *cur_sgel; + u8 *exp_offset; + int num_sgel; + int sgel_count; +}; + +struct esas2r_target { + u8 flags; + #define TF_PASS_THRU 0x01 + #define TF_USED 0x02 + u8 new_target_state; + u8 target_state; + u8 buffered_target_state; +#define TS_NOT_PRESENT 0x00 +#define TS_PRESENT 0x05 +#define TS_LUN_CHANGE 0x06 +#define TS_INVALID 0xFF + u32 block_size; + u32 inter_block; + u32 inter_byte; + u16 virt_targ_id; + u16 phys_targ_id; + u8 identifier_len; + u64 sas_addr; + u8 identifier[60]; + struct atto_vda_ae_lu lu_event; +}; + +struct esas2r_request { + struct list_head comp_list; + struct list_head req_list; + union atto_vda_req *vrq; + struct esas2r_mem_desc *vrq_md; + union { + void *data_buf; + union atto_vda_rsp_data *vda_rsp_data; + }; + u8 *sense_buf; + struct list_head sg_table_head; + struct esas2r_mem_desc *sg_table; + u32 timeout; + #define RQ_TIMEOUT_S1 0xFFFFFFFF + #define RQ_TIMEOUT_S2 0xFFFFFFFE + #define RQ_MAX_TIMEOUT 0xFFFFFFFD + u16 target_id; + u8 req_type; + #define RT_INI_REQ 0x01 + #define RT_DISC_REQ 0x02 + u8 sense_len; + union atto_vda_func_rsp func_rsp; + RQCALLBK comp_cb; + RQCALLBK interrupt_cb; + void *interrupt_cx; + u8 flags; + #define RF_1ST_IBLK_BASE 0x04 + #define RF_FAILURE_OK 0x08 + u8 req_stat; + u16 vda_req_sz; + #define RQ_SIZE_DEFAULT 0 + u64 lba; + RQCALLBK aux_req_cb; + void *aux_req_cx; + u32 blk_len; + u32 max_blk_len; + union { + struct scsi_cmnd *cmd; + u8 *task_management_status_ptr; + }; +}; + +struct esas2r_flash_context { + struct esas2r_flash_img *fi; + RQCALLBK interrupt_cb; + u8 *sgc_offset; + u8 *scratch; + u32 fi_hdr_len; + u8 task; + #define FMTSK_ERASE_BOOT 0 + #define FMTSK_WRTBIOS 1 + #define FMTSK_READBIOS 2 + #define FMTSK_WRTMAC 3 + #define FMTSK_READMAC 4 + #define FMTSK_WRTEFI 5 + #define FMTSK_READEFI 6 + #define FMTSK_WRTCFG 7 + #define FMTSK_READCFG 8 + u8 func; + u16 num_comps; + u32 cmp_len; + u32 flsh_addr; + u32 curr_len; + u8 comp_typ; + struct esas2r_sg_context sgc; +}; + +struct esas2r_disc_context { + u8 disc_evt; + #define DCDE_DEV_CHANGE 0x01 + #define DCDE_DEV_SCAN 0x02 + u8 state; + #define DCS_DEV_RMV 0x00 + #define DCS_DEV_ADD 0x01 + #define DCS_BLOCK_DEV_SCAN 0x02 + #define DCS_RAID_GRP_INFO 0x03 + #define DCS_PART_INFO 0x04 + #define DCS_PT_DEV_INFO 0x05 + #define DCS_PT_DEV_ADDR 0x06 + #define DCS_DISC_DONE 0xFF + u16 flags; + #define DCF_DEV_CHANGE 0x0001 + #define DCF_DEV_SCAN 0x0002 + #define DCF_POLLED 0x8000 + u32 interleave; + u32 block_size; + u16 dev_ix; + u8 part_num; + u8 raid_grp_ix; + char raid_grp_name[16]; + struct esas2r_target *curr_targ; + u16 curr_virt_id; + u16 curr_phys_id; + u8 scan_gen; + u8 dev_addr_type; + u64 sas_addr; +}; + +struct esas2r_mem_desc { + struct list_head next_desc; + void *virt_addr; + u64 phys_addr; + void *pad; + void *esas2r_data; + u32 esas2r_param; + u32 size; +}; + +enum fw_event_type { + fw_event_null, + fw_event_lun_change, + fw_event_present, + fw_event_not_present, + fw_event_vda_ae +}; + +struct esas2r_vda_ae { + u32 signature; +#define ESAS2R_VDA_EVENT_SIG 0x4154544F + u8 bus_number; + u8 devfn; + u8 pad[2]; + union atto_vda_ae vda_ae; +}; + +struct esas2r_fw_event_work { + struct list_head list; + struct delayed_work work; + struct esas2r_adapter *a; + enum fw_event_type type; + u8 data[sizeof(struct esas2r_vda_ae)]; +}; + +enum state { + FW_INVALID_ST, + FW_STATUS_ST, + FW_COMMAND_ST +}; + +struct esas2r_firmware { + enum state state; + struct esas2r_flash_img header; + u8 *data; + u64 phys; + int orig_len; + void *header_buff; + u64 header_buff_phys; +}; + +struct esas2r_adapter { + struct esas2r_target targetdb[ESAS2R_MAX_TARGETS]; + struct esas2r_target *targetdb_end; + unsigned char *regs; + unsigned char *data_window; + u32 volatile flags; + #define AF_PORT_CHANGE (u32)(0x00000001) + #define AF_CHPRST_NEEDED (u32)(0x00000004) + #define AF_CHPRST_PENDING (u32)(0x00000008) + #define AF_CHPRST_DETECTED (u32)(0x00000010) + #define AF_BUSRST_NEEDED (u32)(0x00000020) + #define AF_BUSRST_PENDING (u32)(0x00000040) + #define AF_BUSRST_DETECTED (u32)(0x00000080) + #define AF_DISABLED (u32)(0x00000100) + #define AF_FLASH_LOCK (u32)(0x00000200) + #define AF_OS_RESET (u32)(0x00002000) + #define AF_FLASHING (u32)(0x00004000) + #define AF_POWER_MGT (u32)(0x00008000) + #define AF_NVR_VALID (u32)(0x00010000) + #define AF_DEGRADED_MODE (u32)(0x00020000) + #define AF_DISC_PENDING (u32)(0x00040000) + #define AF_TASKLET_SCHEDULED (u32)(0x00080000) + #define AF_HEARTBEAT (u32)(0x00200000) + #define AF_HEARTBEAT_ENB (u32)(0x00400000) + #define AF_NOT_PRESENT (u32)(0x00800000) + #define AF_CHPRST_STARTED (u32)(0x01000000) + #define AF_FIRST_INIT (u32)(0x02000000) + #define AF_POWER_DOWN (u32)(0x04000000) + #define AF_DISC_IN_PROG (u32)(0x08000000) + #define AF_COMM_LIST_TOGGLE (u32)(0x10000000) + #define AF_LEGACY_SGE_MODE (u32)(0x20000000) + #define AF_DISC_POLLED (u32)(0x40000000) + u32 volatile flags2; + #define AF2_SERIAL_FLASH (u32)(0x00000001) + #define AF2_DEV_SCAN (u32)(0x00000002) + #define AF2_DEV_CNT_OK (u32)(0x00000004) + #define AF2_COREDUMP_AVAIL (u32)(0x00000008) + #define AF2_COREDUMP_SAVED (u32)(0x00000010) + #define AF2_VDA_POWER_DOWN (u32)(0x00000100) + #define AF2_THUNDERLINK (u32)(0x00000200) + #define AF2_THUNDERBOLT (u32)(0x00000400) + #define AF2_INIT_DONE (u32)(0x00000800) + #define AF2_INT_PENDING (u32)(0x00001000) + #define AF2_TIMER_TICK (u32)(0x00002000) + #define AF2_IRQ_CLAIMED (u32)(0x00004000) + #define AF2_MSI_ENABLED (u32)(0x00008000) + atomic_t disable_cnt; + atomic_t dis_ints_cnt; + u32 int_stat; + u32 int_mask; + u32 volatile *outbound_copy; + struct list_head avail_request; + spinlock_t request_lock; + spinlock_t sg_list_lock; + spinlock_t queue_lock; + spinlock_t mem_lock; + struct list_head free_sg_list_head; + struct esas2r_mem_desc *sg_list_mds; + struct list_head active_list; + struct list_head defer_list; + struct esas2r_request **req_table; + union { + u16 prev_dev_cnt; + u32 heartbeat_time; + #define ESAS2R_HEARTBEAT_TIME (3000) + }; + u32 chip_uptime; + #define ESAS2R_CHP_UPTIME_MAX (60000) + #define ESAS2R_CHP_UPTIME_CNT (20000) + u64 uncached_phys; + u8 *uncached; + struct esas2r_sas_nvram *nvram; + struct esas2r_request general_req; + u8 init_msg; + #define ESAS2R_INIT_MSG_START 1 + #define ESAS2R_INIT_MSG_INIT 2 + #define ESAS2R_INIT_MSG_GET_INIT 3 + #define ESAS2R_INIT_MSG_REINIT 4 + u16 cmd_ref_no; + u32 fw_version; + u32 fw_build; + u32 chip_init_time; + #define ESAS2R_CHPRST_TIME (180000) + #define ESAS2R_CHPRST_WAIT_TIME (2000) + u32 last_tick_time; + u32 window_base; + RQBUILDSGL build_sgl; + struct esas2r_request *first_ae_req; + u32 list_size; + u32 last_write; + u32 last_read; + u16 max_vdareq_size; + u16 disc_wait_cnt; + struct esas2r_mem_desc inbound_list_md; + struct esas2r_mem_desc outbound_list_md; + struct esas2r_disc_context disc_ctx; + u8 *disc_buffer; + u32 disc_start_time; + u32 disc_wait_time; + u32 flash_ver; + char flash_rev[16]; + char fw_rev[16]; + char image_type[16]; + struct esas2r_flash_context flash_context; + u32 num_targets_backend; + u32 ioctl_tunnel; + struct tasklet_struct tasklet; + struct pci_dev *pcid; + struct Scsi_Host *host; + unsigned int index; + char name[32]; + struct timer_list timer; + struct esas2r_firmware firmware; + wait_queue_head_t nvram_waiter; + int nvram_command_done; + wait_queue_head_t fm_api_waiter; + int fm_api_command_done; + wait_queue_head_t vda_waiter; + int vda_command_done; + u8 *vda_buffer; + u64 ppvda_buffer; +#define VDA_BUFFER_HEADER_SZ (offsetof(struct atto_ioctl_vda, data)) +#define VDA_MAX_BUFFER_SIZE (0x40000 + VDA_BUFFER_HEADER_SZ) + wait_queue_head_t fs_api_waiter; + int fs_api_command_done; + u64 ppfs_api_buffer; + u8 *fs_api_buffer; + u32 fs_api_buffer_size; + wait_queue_head_t buffered_ioctl_waiter; + int buffered_ioctl_done; + int uncached_size; + struct workqueue_struct *fw_event_q; + struct list_head fw_event_list; + spinlock_t fw_event_lock; + u8 fw_events_off; /* if '1', then ignore events */ + char fw_event_q_name[ESAS2R_KOBJ_NAME_LEN]; + /* + * intr_mode stores the interrupt mode currently being used by this + * adapter. it is based on the interrupt_mode module parameter, but + * can be changed based on the ability (or not) to utilize the + * mode requested by the parameter. + */ + int intr_mode; +#define INTR_MODE_LEGACY 0 +#define INTR_MODE_MSI 1 +#define INTR_MODE_MSIX 2 + struct esas2r_sg_context fm_api_sgc; + u8 *save_offset; + struct list_head vrq_mds_head; + struct esas2r_mem_desc *vrq_mds; + int num_vrqs; + struct semaphore fm_api_semaphore; + struct semaphore fs_api_semaphore; + struct semaphore nvram_semaphore; + struct atto_ioctl *local_atto_ioctl; + u8 fw_coredump_buff[ESAS2R_FWCOREDUMP_SZ]; + unsigned int sysfs_fw_created:1; + unsigned int sysfs_fs_created:1; + unsigned int sysfs_vda_created:1; + unsigned int sysfs_hw_created:1; + unsigned int sysfs_live_nvram_created:1; + unsigned int sysfs_default_nvram_created:1; +}; + +/* + * Function Declarations + * SCSI functions + */ +int esas2r_release(struct Scsi_Host *); +const char *esas2r_info(struct Scsi_Host *); +int esas2r_write_params(struct esas2r_adapter *a, struct esas2r_request *rq, + struct esas2r_sas_nvram *data); +int esas2r_ioctl_handler(void *hostdata, int cmd, void __user *arg); +int esas2r_ioctl(struct scsi_device *dev, int cmd, void __user *arg); +u8 handle_hba_ioctl(struct esas2r_adapter *a, + struct atto_ioctl *ioctl_hba); +int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd); +int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh); +int esas2r_slave_alloc(struct scsi_device *dev); +int esas2r_slave_configure(struct scsi_device *dev); +void esas2r_slave_destroy(struct scsi_device *dev); +int esas2r_change_queue_depth(struct scsi_device *dev, int depth, int reason); +int esas2r_change_queue_type(struct scsi_device *dev, int type); +long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg); + +/* SCSI error handler (eh) functions */ +int esas2r_eh_abort(struct scsi_cmnd *cmd); +int esas2r_device_reset(struct scsi_cmnd *cmd); +int esas2r_host_reset(struct scsi_cmnd *cmd); +int esas2r_bus_reset(struct scsi_cmnd *cmd); +int esas2r_target_reset(struct scsi_cmnd *cmd); + +/* Internal functions */ +int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid, + int index); +int esas2r_cleanup(struct Scsi_Host *host); +int esas2r_read_fw(struct esas2r_adapter *a, char *buf, long off, int count); +int esas2r_write_fw(struct esas2r_adapter *a, const char *buf, long off, + int count); +int esas2r_read_vda(struct esas2r_adapter *a, char *buf, long off, int count); +int esas2r_write_vda(struct esas2r_adapter *a, const char *buf, long off, + int count); +int esas2r_read_fs(struct esas2r_adapter *a, char *buf, long off, int count); +int esas2r_write_fs(struct esas2r_adapter *a, const char *buf, long off, + int count); +void esas2r_adapter_tasklet(unsigned long context); +irqreturn_t esas2r_interrupt(int irq, void *dev_id); +irqreturn_t esas2r_msi_interrupt(int irq, void *dev_id); +void esas2r_kickoff_timer(struct esas2r_adapter *a); +int esas2r_suspend(struct pci_dev *pcid, pm_message_t state); +int esas2r_resume(struct pci_dev *pcid); +void esas2r_fw_event_off(struct esas2r_adapter *a); +void esas2r_fw_event_on(struct esas2r_adapter *a); +bool esas2r_nvram_write(struct esas2r_adapter *a, struct esas2r_request *rq, + struct esas2r_sas_nvram *nvram); +void esas2r_nvram_get_defaults(struct esas2r_adapter *a, + struct esas2r_sas_nvram *nvram); +void esas2r_complete_request_cb(struct esas2r_adapter *a, + struct esas2r_request *rq); +void esas2r_reset_detected(struct esas2r_adapter *a); +void esas2r_target_state_changed(struct esas2r_adapter *ha, u16 targ_id, + u8 state); +int esas2r_req_status_to_error(u8 req_stat); +void esas2r_kill_adapter(int i); +void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq); +struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a); +u32 esas2r_get_uncached_size(struct esas2r_adapter *a); +bool esas2r_init_adapter_struct(struct esas2r_adapter *a, + void **uncached_area); +bool esas2r_check_adapter(struct esas2r_adapter *a); +bool esas2r_init_adapter_hw(struct esas2r_adapter *a, bool init_poll); +void esas2r_start_request(struct esas2r_adapter *a, struct esas2r_request *rq); +bool esas2r_send_task_mgmt(struct esas2r_adapter *a, + struct esas2r_request *rqaux, u8 task_mgt_func); +void esas2r_do_tasklet_tasks(struct esas2r_adapter *a); +void esas2r_adapter_interrupt(struct esas2r_adapter *a); +void esas2r_do_deferred_processes(struct esas2r_adapter *a); +void esas2r_reset_bus(struct esas2r_adapter *a); +void esas2r_reset_adapter(struct esas2r_adapter *a); +void esas2r_timer_tick(struct esas2r_adapter *a); +const char *esas2r_get_model_name(struct esas2r_adapter *a); +const char *esas2r_get_model_name_short(struct esas2r_adapter *a); +u32 esas2r_stall_execution(struct esas2r_adapter *a, u32 start_time, + u32 *delay); +void esas2r_build_flash_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u8 sub_func, + u8 cksum, + u32 addr, + u32 length); +void esas2r_build_mgt_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u8 sub_func, + u8 scan_gen, + u16 dev_index, + u32 length, + void *data); +void esas2r_build_ae_req(struct esas2r_adapter *a, struct esas2r_request *rq); +void esas2r_build_cli_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u32 length, + u32 cmd_rsp_len); +void esas2r_build_ioctl_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u32 length, + u8 sub_func); +void esas2r_build_cfg_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u8 sub_func, + u32 length, + void *data); +void esas2r_power_down(struct esas2r_adapter *a); +bool esas2r_power_up(struct esas2r_adapter *a, bool init_poll); +void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq); +u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo); +bool esas2r_process_fs_ioctl(struct esas2r_adapter *a, + struct esas2r_ioctl_fs *fs, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc); +bool esas2r_read_flash_block(struct esas2r_adapter *a, void *to, u32 from, + u32 size); +bool esas2r_read_mem_block(struct esas2r_adapter *a, void *to, u32 from, + u32 size); +bool esas2r_fm_api(struct esas2r_adapter *a, struct esas2r_flash_img *fi, + struct esas2r_request *rq, struct esas2r_sg_context *sgc); +void esas2r_force_interrupt(struct esas2r_adapter *a); +void esas2r_local_start_request(struct esas2r_adapter *a, + struct esas2r_request *rq); +void esas2r_process_adapter_reset(struct esas2r_adapter *a); +void esas2r_complete_request(struct esas2r_adapter *a, + struct esas2r_request *rq); +void esas2r_dummy_complete(struct esas2r_adapter *a, + struct esas2r_request *rq); +void esas2r_ae_complete(struct esas2r_adapter *a, struct esas2r_request *rq); +void esas2r_start_vda_request(struct esas2r_adapter *a, + struct esas2r_request *rq); +bool esas2r_read_flash_rev(struct esas2r_adapter *a); +bool esas2r_read_image_type(struct esas2r_adapter *a); +bool esas2r_nvram_read_direct(struct esas2r_adapter *a); +bool esas2r_nvram_validate(struct esas2r_adapter *a); +void esas2r_nvram_set_defaults(struct esas2r_adapter *a); +bool esas2r_print_flash_rev(struct esas2r_adapter *a); +void esas2r_send_reset_ae(struct esas2r_adapter *a, bool pwr_mgt); +bool esas2r_init_msgs(struct esas2r_adapter *a); +bool esas2r_is_adapter_present(struct esas2r_adapter *a); +void esas2r_nuxi_mgt_data(u8 function, void *data); +void esas2r_nuxi_cfg_data(u8 function, void *data); +void esas2r_nuxi_ae_data(union atto_vda_ae *ae); +void esas2r_reset_chip(struct esas2r_adapter *a); +void esas2r_log_request_failure(struct esas2r_adapter *a, + struct esas2r_request *rq); +void esas2r_polled_interrupt(struct esas2r_adapter *a); +bool esas2r_ioreq_aborted(struct esas2r_adapter *a, struct esas2r_request *rq, + u8 status); +bool esas2r_build_sg_list_sge(struct esas2r_adapter *a, + struct esas2r_sg_context *sgc); +bool esas2r_build_sg_list_prd(struct esas2r_adapter *a, + struct esas2r_sg_context *sgc); +void esas2r_targ_db_initialize(struct esas2r_adapter *a); +void esas2r_targ_db_remove_all(struct esas2r_adapter *a, bool notify); +void esas2r_targ_db_report_changes(struct esas2r_adapter *a); +struct esas2r_target *esas2r_targ_db_add_raid(struct esas2r_adapter *a, + struct esas2r_disc_context *dc); +struct esas2r_target *esas2r_targ_db_add_pthru(struct esas2r_adapter *a, + struct esas2r_disc_context *dc, + u8 *ident, + u8 ident_len); +void esas2r_targ_db_remove(struct esas2r_adapter *a, struct esas2r_target *t); +struct esas2r_target *esas2r_targ_db_find_by_sas_addr(struct esas2r_adapter *a, + u64 *sas_addr); +struct esas2r_target *esas2r_targ_db_find_by_ident(struct esas2r_adapter *a, + void *identifier, + u8 ident_len); +u16 esas2r_targ_db_find_next_present(struct esas2r_adapter *a, u16 target_id); +struct esas2r_target *esas2r_targ_db_find_by_virt_id(struct esas2r_adapter *a, + u16 virt_id); +u16 esas2r_targ_db_get_tgt_cnt(struct esas2r_adapter *a); +void esas2r_disc_initialize(struct esas2r_adapter *a); +void esas2r_disc_start_waiting(struct esas2r_adapter *a); +void esas2r_disc_check_for_work(struct esas2r_adapter *a); +void esas2r_disc_check_complete(struct esas2r_adapter *a); +void esas2r_disc_queue_event(struct esas2r_adapter *a, u8 disc_evt); +bool esas2r_disc_start_port(struct esas2r_adapter *a); +void esas2r_disc_local_start_request(struct esas2r_adapter *a, + struct esas2r_request *rq); +bool esas2r_set_degraded_mode(struct esas2r_adapter *a, char *error_str); +bool esas2r_process_vda_ioctl(struct esas2r_adapter *a, + struct atto_ioctl_vda *vi, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc); +void esas2r_queue_fw_event(struct esas2r_adapter *a, + enum fw_event_type type, + void *data, + int data_sz); + +/* Inline functions */ +static inline u32 esas2r_lock_set_flags(volatile u32 *flags, u32 bits) +{ + return test_and_set_bit(ilog2(bits), (volatile unsigned long *)flags); +} + +static inline u32 esas2r_lock_clear_flags(volatile u32 *flags, u32 bits) +{ + return test_and_clear_bit(ilog2(bits), + (volatile unsigned long *)flags); +} + +/* Allocate a chip scatter/gather list entry */ +static inline struct esas2r_mem_desc *esas2r_alloc_sgl(struct esas2r_adapter *a) +{ + unsigned long flags; + struct list_head *sgl; + struct esas2r_mem_desc *result = NULL; + + spin_lock_irqsave(&a->sg_list_lock, flags); + if (likely(!list_empty(&a->free_sg_list_head))) { + sgl = a->free_sg_list_head.next; + result = list_entry(sgl, struct esas2r_mem_desc, next_desc); + list_del_init(sgl); + } + spin_unlock_irqrestore(&a->sg_list_lock, flags); + + return result; +} + +/* Initialize a scatter/gather context */ +static inline void esas2r_sgc_init(struct esas2r_sg_context *sgc, + struct esas2r_adapter *a, + struct esas2r_request *rq, + struct atto_vda_sge *first) +{ + sgc->adapter = a; + sgc->first_req = rq; + + /* + * set the limit pointer such that an SGE pointer above this value + * would be the first one to overflow the SGL. + */ + sgc->sge.a64.limit = (struct atto_vda_sge *)((u8 *)rq->vrq + + (sizeof(union + atto_vda_req) / + 8) + - sizeof(struct + atto_vda_sge)); + if (first) { + sgc->sge.a64.last = + sgc->sge.a64.curr = first; + rq->vrq->scsi.sg_list_offset = (u8) + ((u8 *)first - + (u8 *)rq->vrq); + } else { + sgc->sge.a64.last = + sgc->sge.a64.curr = &rq->vrq->scsi.u.sge[0]; + rq->vrq->scsi.sg_list_offset = + (u8)offsetof(struct atto_vda_scsi_req, u.sge); + } + sgc->sge.a64.chain = NULL; +} + +static inline void esas2r_rq_init_request(struct esas2r_request *rq, + struct esas2r_adapter *a) +{ + union atto_vda_req *vrq = rq->vrq; + u32 handle; + + INIT_LIST_HEAD(&rq->sg_table_head); + rq->data_buf = (void *)(vrq + 1); + rq->interrupt_cb = NULL; + rq->comp_cb = esas2r_complete_request_cb; + rq->flags = 0; + rq->timeout = 0; + rq->req_stat = RS_PENDING; + rq->req_type = RT_INI_REQ; + + /* clear the outbound response */ + rq->func_rsp.dwords[0] = 0; + rq->func_rsp.dwords[1] = 0; + + /* + * clear the size of the VDA request. esas2r_build_sg_list() will + * only allow the size of the request to grow. there are some + * management requests that go through there twice and the second + * time through sets a smaller request size. if this is not modified + * at all we'll set it to the size of the entire VDA request. + */ + rq->vda_req_sz = RQ_SIZE_DEFAULT; + + /* req_table entry should be NULL at this point - if not, halt */ + + if (a->req_table[LOWORD(vrq->scsi.handle)]) + esas2r_bugon(); + + /* fill in the table for this handle so we can get back to the + * request. + */ + a->req_table[LOWORD(vrq->scsi.handle)] = rq; + + /* + * add a reference number to the handle to make it unique (until it + * wraps of course) while preserving the upper word + */ + + handle = be32_to_cpu(vrq->scsi.handle) & 0xFFFF0000; + vrq->scsi.handle = cpu_to_be32(handle + a->cmd_ref_no++); + + /* + * the following formats a SCSI request. the caller can override as + * necessary. clear_vda_request can be called to clear the VDA + * request for another type of request. + */ + vrq->scsi.function = VDA_FUNC_SCSI; + vrq->scsi.sense_len = SENSE_DATA_SZ; + + /* clear out sg_list_offset and chain_offset */ + vrq->scsi.sg_list_offset = 0; + vrq->scsi.chain_offset = 0; + vrq->scsi.flags = 0; + vrq->scsi.reserved = 0; + + /* set the sense buffer to be the data payload buffer */ + vrq->scsi.ppsense_buf + = cpu_to_le64(rq->vrq_md->phys_addr + + sizeof(union atto_vda_req)); +} + +static inline void esas2r_rq_free_sg_lists(struct esas2r_request *rq, + struct esas2r_adapter *a) +{ + unsigned long flags; + + if (list_empty(&rq->sg_table_head)) + return; + + spin_lock_irqsave(&a->sg_list_lock, flags); + list_splice_tail_init(&rq->sg_table_head, &a->free_sg_list_head); + spin_unlock_irqrestore(&a->sg_list_lock, flags); +} + +static inline void esas2r_rq_destroy_request(struct esas2r_request *rq, + struct esas2r_adapter *a) + +{ + esas2r_rq_free_sg_lists(rq, a); + a->req_table[LOWORD(rq->vrq->scsi.handle)] = NULL; + rq->data_buf = NULL; +} + +static inline bool esas2r_is_tasklet_pending(struct esas2r_adapter *a) +{ + return (a->flags & (AF_BUSRST_NEEDED | AF_BUSRST_DETECTED + | AF_CHPRST_NEEDED | AF_CHPRST_DETECTED + | AF_PORT_CHANGE)) + ? true : false; +} + +/* + * Build the scatter/gather list for an I/O request according to the + * specifications placed in the esas2r_sg_context. The caller must initialize + * struct esas2r_sg_context prior to the initial call by calling + * esas2r_sgc_init() + */ +static inline bool esas2r_build_sg_list(struct esas2r_adapter *a, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc) +{ + if (unlikely(le32_to_cpu(rq->vrq->scsi.length) == 0)) + return true; + + return (*a->build_sgl)(a, sgc); +} + +static inline void esas2r_disable_chip_interrupts(struct esas2r_adapter *a) +{ + if (atomic_inc_return(&a->dis_ints_cnt) == 1) + esas2r_write_register_dword(a, MU_INT_MASK_OUT, + ESAS2R_INT_DIS_MASK); +} + +static inline void esas2r_enable_chip_interrupts(struct esas2r_adapter *a) +{ + if (atomic_dec_return(&a->dis_ints_cnt) == 0) + esas2r_write_register_dword(a, MU_INT_MASK_OUT, + ESAS2R_INT_ENB_MASK); +} + +/* Schedule a TASKLET to perform non-interrupt tasks that may require delays + * or long completion times. + */ +static inline void esas2r_schedule_tasklet(struct esas2r_adapter *a) +{ + /* make sure we don't schedule twice */ + if (!(esas2r_lock_set_flags(&a->flags, AF_TASKLET_SCHEDULED) & + ilog2(AF_TASKLET_SCHEDULED))) + tasklet_hi_schedule(&a->tasklet); +} + +static inline void esas2r_enable_heartbeat(struct esas2r_adapter *a) +{ + if (!(a->flags & (AF_DEGRADED_MODE | AF_CHPRST_PENDING)) + && (a->nvram->options2 & SASNVR2_HEARTBEAT)) + esas2r_lock_set_flags(&a->flags, AF_HEARTBEAT_ENB); + else + esas2r_lock_clear_flags(&a->flags, AF_HEARTBEAT_ENB); +} + +static inline void esas2r_disable_heartbeat(struct esas2r_adapter *a) +{ + esas2r_lock_clear_flags(&a->flags, AF_HEARTBEAT_ENB); + esas2r_lock_clear_flags(&a->flags, AF_HEARTBEAT); +} + +/* Set the initial state for resetting the adapter on the next pass through + * esas2r_do_deferred. + */ +static inline void esas2r_local_reset_adapter(struct esas2r_adapter *a) +{ + esas2r_disable_heartbeat(a); + + esas2r_lock_set_flags(&a->flags, AF_CHPRST_NEEDED); + esas2r_lock_set_flags(&a->flags, AF_CHPRST_PENDING); + esas2r_lock_set_flags(&a->flags, AF_DISC_PENDING); +} + +/* See if an interrupt is pending on the adapter. */ +static inline bool esas2r_adapter_interrupt_pending(struct esas2r_adapter *a) +{ + u32 intstat; + + if (a->int_mask == 0) + return false; + + intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT); + + if ((intstat & a->int_mask) == 0) + return false; + + esas2r_disable_chip_interrupts(a); + + a->int_stat = intstat; + a->int_mask = 0; + + return true; +} + +static inline u16 esas2r_targ_get_id(struct esas2r_target *t, + struct esas2r_adapter *a) +{ + return (u16)(uintptr_t)(t - a->targetdb); +} + +/* Build and start an asynchronous event request */ +static inline void esas2r_start_ae_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + unsigned long flags; + + esas2r_build_ae_req(a, rq); + + spin_lock_irqsave(&a->queue_lock, flags); + esas2r_start_vda_request(a, rq); + spin_unlock_irqrestore(&a->queue_lock, flags); +} + +static inline void esas2r_comp_list_drain(struct esas2r_adapter *a, + struct list_head *comp_list) +{ + struct esas2r_request *rq; + struct list_head *element, *next; + + list_for_each_safe(element, next, comp_list) { + rq = list_entry(element, struct esas2r_request, comp_list); + list_del_init(element); + esas2r_complete_request(a, rq); + } +} + +/* sysfs handlers */ +extern struct bin_attribute bin_attr_fw; +extern struct bin_attribute bin_attr_fs; +extern struct bin_attribute bin_attr_vda; +extern struct bin_attribute bin_attr_hw; +extern struct bin_attribute bin_attr_live_nvram; +extern struct bin_attribute bin_attr_default_nvram; + +#endif /* ESAS2R_H */ diff --git a/drivers/scsi/esas2r/esas2r_disc.c b/drivers/scsi/esas2r/esas2r_disc.c new file mode 100644 index 000000000000..dec6c334ce3e --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_disc.c @@ -0,0 +1,1189 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_disc.c + * esas2r device discovery routines + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + +#include "esas2r.h" + +/* Miscellaneous internal discovery routines */ +static void esas2r_disc_abort(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_continue(struct esas2r_adapter *a, + struct esas2r_request *rq); +static void esas2r_disc_fix_curr_requests(struct esas2r_adapter *a); +static u32 esas2r_disc_get_phys_addr(struct esas2r_sg_context *sgc, u64 *addr); +static bool esas2r_disc_start_request(struct esas2r_adapter *a, + struct esas2r_request *rq); + +/* Internal discovery routines that process the states */ +static bool esas2r_disc_block_dev_scan(struct esas2r_adapter *a, + struct esas2r_request *rq); +static void esas2r_disc_block_dev_scan_cb(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_dev_add(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_dev_remove(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_part_info(struct esas2r_adapter *a, + struct esas2r_request *rq); +static void esas2r_disc_part_info_cb(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_passthru_dev_info(struct esas2r_adapter *a, + struct esas2r_request *rq); +static void esas2r_disc_passthru_dev_info_cb(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_passthru_dev_addr(struct esas2r_adapter *a, + struct esas2r_request *rq); +static void esas2r_disc_passthru_dev_addr_cb(struct esas2r_adapter *a, + struct esas2r_request *rq); +static bool esas2r_disc_raid_grp_info(struct esas2r_adapter *a, + struct esas2r_request *rq); +static void esas2r_disc_raid_grp_info_cb(struct esas2r_adapter *a, + struct esas2r_request *rq); + +void esas2r_disc_initialize(struct esas2r_adapter *a) +{ + struct esas2r_sas_nvram *nvr = a->nvram; + + esas2r_trace_enter(); + + esas2r_lock_clear_flags(&a->flags, AF_DISC_IN_PROG); + esas2r_lock_clear_flags(&a->flags2, AF2_DEV_SCAN); + esas2r_lock_clear_flags(&a->flags2, AF2_DEV_CNT_OK); + + a->disc_start_time = jiffies_to_msecs(jiffies); + a->disc_wait_time = nvr->dev_wait_time * 1000; + a->disc_wait_cnt = nvr->dev_wait_count; + + if (a->disc_wait_cnt > ESAS2R_MAX_TARGETS) + a->disc_wait_cnt = ESAS2R_MAX_TARGETS; + + /* + * If we are doing chip reset or power management processing, always + * wait for devices. use the NVRAM device count if it is greater than + * previously discovered devices. + */ + + esas2r_hdebug("starting discovery..."); + + a->general_req.interrupt_cx = NULL; + + if (a->flags & (AF_CHPRST_DETECTED | AF_POWER_MGT)) { + if (a->prev_dev_cnt == 0) { + /* Don't bother waiting if there is nothing to wait + * for. + */ + a->disc_wait_time = 0; + } else { + /* + * Set the device wait count to what was previously + * found. We don't care if the user only configured + * a time because we know the exact count to wait for. + * There is no need to honor the user's wishes to + * always wait the full time. + */ + a->disc_wait_cnt = a->prev_dev_cnt; + + /* + * bump the minimum wait time to 15 seconds since the + * default is 3 (system boot or the boot driver usually + * buys us more time). + */ + if (a->disc_wait_time < 15000) + a->disc_wait_time = 15000; + } + } + + esas2r_trace("disc wait count: %d", a->disc_wait_cnt); + esas2r_trace("disc wait time: %d", a->disc_wait_time); + + if (a->disc_wait_time == 0) + esas2r_disc_check_complete(a); + + esas2r_trace_exit(); +} + +void esas2r_disc_start_waiting(struct esas2r_adapter *a) +{ + unsigned long flags; + + spin_lock_irqsave(&a->mem_lock, flags); + + if (a->disc_ctx.disc_evt) + esas2r_disc_start_port(a); + + spin_unlock_irqrestore(&a->mem_lock, flags); +} + +void esas2r_disc_check_for_work(struct esas2r_adapter *a) +{ + struct esas2r_request *rq = &a->general_req; + + /* service any pending interrupts first */ + + esas2r_polled_interrupt(a); + + /* + * now, interrupt processing may have queued up a discovery event. go + * see if we have one to start. we couldn't start it in the ISR since + * polled discovery would cause a deadlock. + */ + + esas2r_disc_start_waiting(a); + + if (rq->interrupt_cx == NULL) + return; + + if (rq->req_stat == RS_STARTED + && rq->timeout <= RQ_MAX_TIMEOUT) { + /* wait for the current discovery request to complete. */ + esas2r_wait_request(a, rq); + + if (rq->req_stat == RS_TIMEOUT) { + esas2r_disc_abort(a, rq); + esas2r_local_reset_adapter(a); + return; + } + } + + if (rq->req_stat == RS_PENDING + || rq->req_stat == RS_STARTED) + return; + + esas2r_disc_continue(a, rq); +} + +void esas2r_disc_check_complete(struct esas2r_adapter *a) +{ + unsigned long flags; + + esas2r_trace_enter(); + + /* check to see if we should be waiting for devices */ + if (a->disc_wait_time) { + u32 currtime = jiffies_to_msecs(jiffies); + u32 time = currtime - a->disc_start_time; + + /* + * Wait until the device wait time is exhausted or the device + * wait count is satisfied. + */ + if (time < a->disc_wait_time + && (esas2r_targ_db_get_tgt_cnt(a) < a->disc_wait_cnt + || a->disc_wait_cnt == 0)) { + /* After three seconds of waiting, schedule a scan. */ + if (time >= 3000 + && !(esas2r_lock_set_flags(&a->flags2, + AF2_DEV_SCAN) & + ilog2(AF2_DEV_SCAN))) { + spin_lock_irqsave(&a->mem_lock, flags); + esas2r_disc_queue_event(a, DCDE_DEV_SCAN); + spin_unlock_irqrestore(&a->mem_lock, flags); + } + + esas2r_trace_exit(); + return; + } + + /* + * We are done waiting...we think. Adjust the wait time to + * consume events after the count is met. + */ + if (!(esas2r_lock_set_flags(&a->flags2, AF2_DEV_CNT_OK) + & ilog2(AF2_DEV_CNT_OK))) + a->disc_wait_time = time + 3000; + + /* If we haven't done a full scan yet, do it now. */ + if (!(esas2r_lock_set_flags(&a->flags2, + AF2_DEV_SCAN) & + ilog2(AF2_DEV_SCAN))) { + spin_lock_irqsave(&a->mem_lock, flags); + esas2r_disc_queue_event(a, DCDE_DEV_SCAN); + spin_unlock_irqrestore(&a->mem_lock, flags); + + esas2r_trace_exit(); + return; + } + + /* + * Now, if there is still time left to consume events, continue + * waiting. + */ + if (time < a->disc_wait_time) { + esas2r_trace_exit(); + return; + } + } else { + if (!(esas2r_lock_set_flags(&a->flags2, + AF2_DEV_SCAN) & + ilog2(AF2_DEV_SCAN))) { + spin_lock_irqsave(&a->mem_lock, flags); + esas2r_disc_queue_event(a, DCDE_DEV_SCAN); + spin_unlock_irqrestore(&a->mem_lock, flags); + } + } + + /* We want to stop waiting for devices. */ + a->disc_wait_time = 0; + + if ((a->flags & AF_DISC_POLLED) + && (a->flags & AF_DISC_IN_PROG)) { + /* + * Polled discovery is still pending so continue the active + * discovery until it is done. At that point, we will stop + * polled discovery and transition to interrupt driven + * discovery. + */ + } else { + /* + * Done waiting for devices. Note that we get here immediately + * after deferred waiting completes because that is interrupt + * driven; i.e. There is no transition. + */ + esas2r_disc_fix_curr_requests(a); + esas2r_lock_clear_flags(&a->flags, AF_DISC_PENDING); + + /* + * We have deferred target state changes until now because we + * don't want to report any removals (due to the first arrival) + * until the device wait time expires. + */ + esas2r_lock_set_flags(&a->flags, AF_PORT_CHANGE); + } + + esas2r_trace_exit(); +} + +void esas2r_disc_queue_event(struct esas2r_adapter *a, u8 disc_evt) +{ + struct esas2r_disc_context *dc = &a->disc_ctx; + + esas2r_trace_enter(); + + esas2r_trace("disc_event: %d", disc_evt); + + /* Initialize the discovery context */ + dc->disc_evt |= disc_evt; + + /* + * Don't start discovery before or during polled discovery. if we did, + * we would have a deadlock if we are in the ISR already. + */ + if (!(a->flags & (AF_CHPRST_PENDING | AF_DISC_POLLED))) + esas2r_disc_start_port(a); + + esas2r_trace_exit(); +} + +bool esas2r_disc_start_port(struct esas2r_adapter *a) +{ + struct esas2r_request *rq = &a->general_req; + struct esas2r_disc_context *dc = &a->disc_ctx; + bool ret; + + esas2r_trace_enter(); + + if (a->flags & AF_DISC_IN_PROG) { + esas2r_trace_exit(); + + return false; + } + + /* If there is a discovery waiting, process it. */ + if (dc->disc_evt) { + if ((a->flags & AF_DISC_POLLED) + && a->disc_wait_time == 0) { + /* + * We are doing polled discovery, but we no longer want + * to wait for devices. Stop polled discovery and + * transition to interrupt driven discovery. + */ + + esas2r_trace_exit(); + + return false; + } + } else { + /* Discovery is complete. */ + + esas2r_hdebug("disc done"); + + esas2r_lock_set_flags(&a->flags, AF_PORT_CHANGE); + + esas2r_trace_exit(); + + return false; + } + + /* Handle the discovery context */ + esas2r_trace("disc_evt: %d", dc->disc_evt); + esas2r_lock_set_flags(&a->flags, AF_DISC_IN_PROG); + dc->flags = 0; + + if (a->flags & AF_DISC_POLLED) + dc->flags |= DCF_POLLED; + + rq->interrupt_cx = dc; + rq->req_stat = RS_SUCCESS; + + /* Decode the event code */ + if (dc->disc_evt & DCDE_DEV_SCAN) { + dc->disc_evt &= ~DCDE_DEV_SCAN; + + dc->flags |= DCF_DEV_SCAN; + dc->state = DCS_BLOCK_DEV_SCAN; + } else if (dc->disc_evt & DCDE_DEV_CHANGE) { + dc->disc_evt &= ~DCDE_DEV_CHANGE; + + dc->flags |= DCF_DEV_CHANGE; + dc->state = DCS_DEV_RMV; + } + + /* Continue interrupt driven discovery */ + if (!(a->flags & AF_DISC_POLLED)) + ret = esas2r_disc_continue(a, rq); + else + ret = true; + + esas2r_trace_exit(); + + return ret; +} + +static bool esas2r_disc_continue(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + bool rslt; + + /* Device discovery/removal */ + while (dc->flags & (DCF_DEV_CHANGE | DCF_DEV_SCAN)) { + rslt = false; + + switch (dc->state) { + case DCS_DEV_RMV: + + rslt = esas2r_disc_dev_remove(a, rq); + break; + + case DCS_DEV_ADD: + + rslt = esas2r_disc_dev_add(a, rq); + break; + + case DCS_BLOCK_DEV_SCAN: + + rslt = esas2r_disc_block_dev_scan(a, rq); + break; + + case DCS_RAID_GRP_INFO: + + rslt = esas2r_disc_raid_grp_info(a, rq); + break; + + case DCS_PART_INFO: + + rslt = esas2r_disc_part_info(a, rq); + break; + + case DCS_PT_DEV_INFO: + + rslt = esas2r_disc_passthru_dev_info(a, rq); + break; + case DCS_PT_DEV_ADDR: + + rslt = esas2r_disc_passthru_dev_addr(a, rq); + break; + case DCS_DISC_DONE: + + dc->flags &= ~(DCF_DEV_CHANGE | DCF_DEV_SCAN); + break; + + default: + + esas2r_bugon(); + dc->state = DCS_DISC_DONE; + break; + } + + if (rslt) + return true; + } + + /* Discovery is done...for now. */ + rq->interrupt_cx = NULL; + + if (!(a->flags & AF_DISC_PENDING)) + esas2r_disc_fix_curr_requests(a); + + esas2r_lock_clear_flags(&a->flags, AF_DISC_IN_PROG); + + /* Start the next discovery. */ + return esas2r_disc_start_port(a); +} + +static bool esas2r_disc_start_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + unsigned long flags; + + /* Set the timeout to a minimum value. */ + if (rq->timeout < ESAS2R_DEFAULT_TMO) + rq->timeout = ESAS2R_DEFAULT_TMO; + + /* + * Override the request type to distinguish discovery requests. If we + * end up deferring the request, esas2r_disc_local_start_request() + * will be called to restart it. + */ + rq->req_type = RT_DISC_REQ; + + spin_lock_irqsave(&a->queue_lock, flags); + + if (!(a->flags & (AF_CHPRST_PENDING | AF_FLASHING))) + esas2r_disc_local_start_request(a, rq); + else + list_add_tail(&rq->req_list, &a->defer_list); + + spin_unlock_irqrestore(&a->queue_lock, flags); + + return true; +} + +void esas2r_disc_local_start_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + esas2r_trace_enter(); + + list_add_tail(&rq->req_list, &a->active_list); + + esas2r_start_vda_request(a, rq); + + esas2r_trace_exit(); + + return; +} + +static void esas2r_disc_abort(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + + esas2r_trace_enter(); + + /* abort the current discovery */ + + dc->state = DCS_DISC_DONE; + + esas2r_trace_exit(); +} + +static bool esas2r_disc_block_dev_scan(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + bool rslt; + + esas2r_trace_enter(); + + esas2r_rq_init_request(rq, a); + + esas2r_build_mgt_req(a, + rq, + VDAMGT_DEV_SCAN, + 0, + 0, + 0, + NULL); + + rq->comp_cb = esas2r_disc_block_dev_scan_cb; + + rq->timeout = 30000; + rq->interrupt_cx = dc; + + rslt = esas2r_disc_start_request(a, rq); + + esas2r_trace_exit(); + + return rslt; +} + +static void esas2r_disc_block_dev_scan_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + unsigned long flags; + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->mem_lock, flags); + + if (rq->req_stat == RS_SUCCESS) + dc->scan_gen = rq->func_rsp.mgt_rsp.scan_generation; + + dc->state = DCS_RAID_GRP_INFO; + dc->raid_grp_ix = 0; + + esas2r_rq_destroy_request(rq, a); + + /* continue discovery if it's interrupt driven */ + + if (!(dc->flags & DCF_POLLED)) + esas2r_disc_continue(a, rq); + + spin_unlock_irqrestore(&a->mem_lock, flags); + + esas2r_trace_exit(); +} + +static bool esas2r_disc_raid_grp_info(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + bool rslt; + struct atto_vda_grp_info *grpinfo; + + esas2r_trace_enter(); + + esas2r_trace("raid_group_idx: %d", dc->raid_grp_ix); + + if (dc->raid_grp_ix >= VDA_MAX_RAID_GROUPS) { + dc->state = DCS_DISC_DONE; + + esas2r_trace_exit(); + + return false; + } + + esas2r_rq_init_request(rq, a); + + grpinfo = &rq->vda_rsp_data->mgt_data.data.grp_info; + + memset(grpinfo, 0, sizeof(struct atto_vda_grp_info)); + + esas2r_build_mgt_req(a, + rq, + VDAMGT_GRP_INFO, + dc->scan_gen, + 0, + sizeof(struct atto_vda_grp_info), + NULL); + + grpinfo->grp_index = dc->raid_grp_ix; + + rq->comp_cb = esas2r_disc_raid_grp_info_cb; + + rq->interrupt_cx = dc; + + rslt = esas2r_disc_start_request(a, rq); + + esas2r_trace_exit(); + + return rslt; +} + +static void esas2r_disc_raid_grp_info_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + unsigned long flags; + struct atto_vda_grp_info *grpinfo; + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->mem_lock, flags); + + if (rq->req_stat == RS_SCAN_GEN) { + dc->scan_gen = rq->func_rsp.mgt_rsp.scan_generation; + dc->raid_grp_ix = 0; + goto done; + } + + if (rq->req_stat == RS_SUCCESS) { + grpinfo = &rq->vda_rsp_data->mgt_data.data.grp_info; + + if (grpinfo->status != VDA_GRP_STAT_ONLINE + && grpinfo->status != VDA_GRP_STAT_DEGRADED) { + /* go to the next group. */ + + dc->raid_grp_ix++; + } else { + memcpy(&dc->raid_grp_name[0], + &grpinfo->grp_name[0], + sizeof(grpinfo->grp_name)); + + dc->interleave = le32_to_cpu(grpinfo->interleave); + dc->block_size = le32_to_cpu(grpinfo->block_size); + + dc->state = DCS_PART_INFO; + dc->part_num = 0; + } + } else { + if (!(rq->req_stat == RS_GRP_INVALID)) { + esas2r_log(ESAS2R_LOG_WARN, + "A request for RAID group info failed - " + "returned with %x", + rq->req_stat); + } + + dc->dev_ix = 0; + dc->state = DCS_PT_DEV_INFO; + } + +done: + + esas2r_rq_destroy_request(rq, a); + + /* continue discovery if it's interrupt driven */ + + if (!(dc->flags & DCF_POLLED)) + esas2r_disc_continue(a, rq); + + spin_unlock_irqrestore(&a->mem_lock, flags); + + esas2r_trace_exit(); +} + +static bool esas2r_disc_part_info(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + bool rslt; + struct atto_vdapart_info *partinfo; + + esas2r_trace_enter(); + + esas2r_trace("part_num: %d", dc->part_num); + + if (dc->part_num >= VDA_MAX_PARTITIONS) { + dc->state = DCS_RAID_GRP_INFO; + dc->raid_grp_ix++; + + esas2r_trace_exit(); + + return false; + } + + esas2r_rq_init_request(rq, a); + + partinfo = &rq->vda_rsp_data->mgt_data.data.part_info; + + memset(partinfo, 0, sizeof(struct atto_vdapart_info)); + + esas2r_build_mgt_req(a, + rq, + VDAMGT_PART_INFO, + dc->scan_gen, + 0, + sizeof(struct atto_vdapart_info), + NULL); + + partinfo->part_no = dc->part_num; + + memcpy(&partinfo->grp_name[0], + &dc->raid_grp_name[0], + sizeof(partinfo->grp_name)); + + rq->comp_cb = esas2r_disc_part_info_cb; + + rq->interrupt_cx = dc; + + rslt = esas2r_disc_start_request(a, rq); + + esas2r_trace_exit(); + + return rslt; +} + +static void esas2r_disc_part_info_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + unsigned long flags; + struct atto_vdapart_info *partinfo; + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->mem_lock, flags); + + if (rq->req_stat == RS_SCAN_GEN) { + dc->scan_gen = rq->func_rsp.mgt_rsp.scan_generation; + dc->raid_grp_ix = 0; + dc->state = DCS_RAID_GRP_INFO; + } else if (rq->req_stat == RS_SUCCESS) { + partinfo = &rq->vda_rsp_data->mgt_data.data.part_info; + + dc->part_num = partinfo->part_no; + + dc->curr_virt_id = le16_to_cpu(partinfo->target_id); + + esas2r_targ_db_add_raid(a, dc); + + dc->part_num++; + } else { + if (!(rq->req_stat == RS_PART_LAST)) { + esas2r_log(ESAS2R_LOG_WARN, + "A request for RAID group partition info " + "failed - status:%d", rq->req_stat); + } + + dc->state = DCS_RAID_GRP_INFO; + dc->raid_grp_ix++; + } + + esas2r_rq_destroy_request(rq, a); + + /* continue discovery if it's interrupt driven */ + + if (!(dc->flags & DCF_POLLED)) + esas2r_disc_continue(a, rq); + + spin_unlock_irqrestore(&a->mem_lock, flags); + + esas2r_trace_exit(); +} + +static bool esas2r_disc_passthru_dev_info(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + bool rslt; + struct atto_vda_devinfo *devinfo; + + esas2r_trace_enter(); + + esas2r_trace("dev_ix: %d", dc->dev_ix); + + esas2r_rq_init_request(rq, a); + + devinfo = &rq->vda_rsp_data->mgt_data.data.dev_info; + + memset(devinfo, 0, sizeof(struct atto_vda_devinfo)); + + esas2r_build_mgt_req(a, + rq, + VDAMGT_DEV_PT_INFO, + dc->scan_gen, + dc->dev_ix, + sizeof(struct atto_vda_devinfo), + NULL); + + rq->comp_cb = esas2r_disc_passthru_dev_info_cb; + + rq->interrupt_cx = dc; + + rslt = esas2r_disc_start_request(a, rq); + + esas2r_trace_exit(); + + return rslt; +} + +static void esas2r_disc_passthru_dev_info_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + unsigned long flags; + struct atto_vda_devinfo *devinfo; + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->mem_lock, flags); + + if (rq->req_stat == RS_SCAN_GEN) { + dc->scan_gen = rq->func_rsp.mgt_rsp.scan_generation; + dc->dev_ix = 0; + dc->state = DCS_PT_DEV_INFO; + } else if (rq->req_stat == RS_SUCCESS) { + devinfo = &rq->vda_rsp_data->mgt_data.data.dev_info; + + dc->dev_ix = le16_to_cpu(rq->func_rsp.mgt_rsp.dev_index); + + dc->curr_virt_id = le16_to_cpu(devinfo->target_id); + + if (le16_to_cpu(devinfo->features) & VDADEVFEAT_PHYS_ID) { + dc->curr_phys_id = + le16_to_cpu(devinfo->phys_target_id); + dc->dev_addr_type = ATTO_GDA_AT_PORT; + dc->state = DCS_PT_DEV_ADDR; + + esas2r_trace("curr_virt_id: %d", dc->curr_virt_id); + esas2r_trace("curr_phys_id: %d", dc->curr_phys_id); + } else { + dc->dev_ix++; + } + } else { + if (!(rq->req_stat == RS_DEV_INVALID)) { + esas2r_log(ESAS2R_LOG_WARN, + "A request for device information failed - " + "status:%d", rq->req_stat); + } + + dc->state = DCS_DISC_DONE; + } + + esas2r_rq_destroy_request(rq, a); + + /* continue discovery if it's interrupt driven */ + + if (!(dc->flags & DCF_POLLED)) + esas2r_disc_continue(a, rq); + + spin_unlock_irqrestore(&a->mem_lock, flags); + + esas2r_trace_exit(); +} + +static bool esas2r_disc_passthru_dev_addr(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + bool rslt; + struct atto_ioctl *hi; + struct esas2r_sg_context sgc; + + esas2r_trace_enter(); + + esas2r_rq_init_request(rq, a); + + /* format the request. */ + + sgc.cur_offset = NULL; + sgc.get_phys_addr = (PGETPHYSADDR)esas2r_disc_get_phys_addr; + sgc.length = offsetof(struct atto_ioctl, data) + + sizeof(struct atto_hba_get_device_address); + + esas2r_sgc_init(&sgc, a, rq, rq->vrq->ioctl.sge); + + esas2r_build_ioctl_req(a, rq, sgc.length, VDA_IOCTL_HBA); + + if (!esas2r_build_sg_list(a, rq, &sgc)) { + esas2r_rq_destroy_request(rq, a); + + esas2r_trace_exit(); + + return false; + } + + rq->comp_cb = esas2r_disc_passthru_dev_addr_cb; + + rq->interrupt_cx = dc; + + /* format the IOCTL data. */ + + hi = (struct atto_ioctl *)a->disc_buffer; + + memset(a->disc_buffer, 0, ESAS2R_DISC_BUF_LEN); + + hi->version = ATTO_VER_GET_DEV_ADDR0; + hi->function = ATTO_FUNC_GET_DEV_ADDR; + hi->flags = HBAF_TUNNEL; + + hi->data.get_dev_addr.target_id = le32_to_cpu(dc->curr_phys_id); + hi->data.get_dev_addr.addr_type = dc->dev_addr_type; + + /* start it up. */ + + rslt = esas2r_disc_start_request(a, rq); + + esas2r_trace_exit(); + + return rslt; +} + +static void esas2r_disc_passthru_dev_addr_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + struct esas2r_target *t = NULL; + unsigned long flags; + struct atto_ioctl *hi; + u16 addrlen; + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->mem_lock, flags); + + hi = (struct atto_ioctl *)a->disc_buffer; + + if (rq->req_stat == RS_SUCCESS + && hi->status == ATTO_STS_SUCCESS) { + addrlen = le16_to_cpu(hi->data.get_dev_addr.addr_len); + + if (dc->dev_addr_type == ATTO_GDA_AT_PORT) { + if (addrlen == sizeof(u64)) + memcpy(&dc->sas_addr, + &hi->data.get_dev_addr.address[0], + addrlen); + else + memset(&dc->sas_addr, 0, sizeof(dc->sas_addr)); + + /* Get the unique identifier. */ + dc->dev_addr_type = ATTO_GDA_AT_UNIQUE; + + goto next_dev_addr; + } else { + /* Add the pass through target. */ + if (HIBYTE(addrlen) == 0) { + t = esas2r_targ_db_add_pthru(a, + dc, + &hi->data. + get_dev_addr. + address[0], + (u8)hi->data. + get_dev_addr. + addr_len); + + if (t) + memcpy(&t->sas_addr, &dc->sas_addr, + sizeof(t->sas_addr)); + } else { + /* getting the back end data failed */ + + esas2r_log(ESAS2R_LOG_WARN, + "an error occurred retrieving the " + "back end data (%s:%d)", + __func__, + __LINE__); + } + } + } else { + /* getting the back end data failed */ + + esas2r_log(ESAS2R_LOG_WARN, + "an error occurred retrieving the back end data - " + "rq->req_stat:%d hi->status:%d", + rq->req_stat, hi->status); + } + + /* proceed to the next device. */ + + if (dc->flags & DCF_DEV_SCAN) { + dc->dev_ix++; + dc->state = DCS_PT_DEV_INFO; + } else if (dc->flags & DCF_DEV_CHANGE) { + dc->curr_targ++; + dc->state = DCS_DEV_ADD; + } else { + esas2r_bugon(); + } + +next_dev_addr: + esas2r_rq_destroy_request(rq, a); + + /* continue discovery if it's interrupt driven */ + + if (!(dc->flags & DCF_POLLED)) + esas2r_disc_continue(a, rq); + + spin_unlock_irqrestore(&a->mem_lock, flags); + + esas2r_trace_exit(); +} + +static u32 esas2r_disc_get_phys_addr(struct esas2r_sg_context *sgc, u64 *addr) +{ + struct esas2r_adapter *a = sgc->adapter; + + if (sgc->length > ESAS2R_DISC_BUF_LEN) + esas2r_bugon(); + + *addr = a->uncached_phys + + (u64)((u8 *)a->disc_buffer - a->uncached); + + return sgc->length; +} + +static bool esas2r_disc_dev_remove(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + struct esas2r_target *t; + struct esas2r_target *t2; + + esas2r_trace_enter(); + + /* process removals. */ + + for (t = a->targetdb; t < a->targetdb_end; t++) { + if (t->new_target_state != TS_NOT_PRESENT) + continue; + + t->new_target_state = TS_INVALID; + + /* remove the right target! */ + + t2 = + esas2r_targ_db_find_by_virt_id(a, + esas2r_targ_get_id(t, + a)); + + if (t2) + esas2r_targ_db_remove(a, t2); + } + + /* removals complete. process arrivals. */ + + dc->state = DCS_DEV_ADD; + dc->curr_targ = a->targetdb; + + esas2r_trace_exit(); + + return false; +} + +static bool esas2r_disc_dev_add(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_disc_context *dc = + (struct esas2r_disc_context *)rq->interrupt_cx; + struct esas2r_target *t = dc->curr_targ; + + if (t >= a->targetdb_end) { + /* done processing state changes. */ + + dc->state = DCS_DISC_DONE; + } else if (t->new_target_state == TS_PRESENT) { + struct atto_vda_ae_lu *luevt = &t->lu_event; + + esas2r_trace_enter(); + + /* clear this now in case more events come in. */ + + t->new_target_state = TS_INVALID; + + /* setup the discovery context for adding this device. */ + + dc->curr_virt_id = esas2r_targ_get_id(t, a); + + if ((luevt->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id) + + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) + && !(luevt->dwevent & VDAAE_LU_PASSTHROUGH)) { + dc->block_size = luevt->id.tgtlun_raid.dwblock_size; + dc->interleave = luevt->id.tgtlun_raid.dwinterleave; + } else { + dc->block_size = 0; + dc->interleave = 0; + } + + /* determine the device type being added. */ + + if (luevt->dwevent & VDAAE_LU_PASSTHROUGH) { + if (luevt->dwevent & VDAAE_LU_PHYS_ID) { + dc->state = DCS_PT_DEV_ADDR; + dc->dev_addr_type = ATTO_GDA_AT_PORT; + dc->curr_phys_id = luevt->wphys_target_id; + } else { + esas2r_log(ESAS2R_LOG_WARN, + "luevt->dwevent does not have the " + "VDAAE_LU_PHYS_ID bit set (%s:%d)", + __func__, __LINE__); + } + } else { + dc->raid_grp_name[0] = 0; + + esas2r_targ_db_add_raid(a, dc); + } + + esas2r_trace("curr_virt_id: %d", dc->curr_virt_id); + esas2r_trace("curr_phys_id: %d", dc->curr_phys_id); + esas2r_trace("dwevent: %d", luevt->dwevent); + + esas2r_trace_exit(); + } + + if (dc->state == DCS_DEV_ADD) { + /* go to the next device. */ + + dc->curr_targ++; + } + + return false; +} + +/* + * When discovery is done, find all requests on defer queue and + * test if they need to be modified. If a target is no longer present + * then complete the request with RS_SEL. Otherwise, update the + * target_id since after a hibernate it can be a different value. + * VDA does not make passthrough target IDs persistent. + */ +static void esas2r_disc_fix_curr_requests(struct esas2r_adapter *a) +{ + unsigned long flags; + struct esas2r_target *t; + struct esas2r_request *rq; + struct list_head *element; + + /* update virt_targ_id in any outstanding esas2r_requests */ + + spin_lock_irqsave(&a->queue_lock, flags); + + list_for_each(element, &a->defer_list) { + rq = list_entry(element, struct esas2r_request, req_list); + if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { + t = a->targetdb + rq->target_id; + + if (t->target_state == TS_PRESENT) + rq->vrq->scsi.target_id = le16_to_cpu( + t->virt_targ_id); + else + rq->req_stat = RS_SEL; + } + + } + + spin_unlock_irqrestore(&a->queue_lock, flags); +} diff --git a/drivers/scsi/esas2r/esas2r_flash.c b/drivers/scsi/esas2r/esas2r_flash.c new file mode 100644 index 000000000000..8582929b1fef --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_flash.c @@ -0,0 +1,1512 @@ + +/* + * linux/drivers/scsi/esas2r/esas2r_flash.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +/* local macro defs */ +#define esas2r_nvramcalc_cksum(n) \ + (esas2r_calc_byte_cksum((u8 *)(n), sizeof(struct esas2r_sas_nvram), \ + SASNVR_CKSUM_SEED)) +#define esas2r_nvramcalc_xor_cksum(n) \ + (esas2r_calc_byte_xor_cksum((u8 *)(n), \ + sizeof(struct esas2r_sas_nvram), 0)) + +#define ESAS2R_FS_DRVR_VER 2 + +static struct esas2r_sas_nvram default_sas_nvram = { + { 'E', 'S', 'A', 'S' }, /* signature */ + SASNVR_VERSION, /* version */ + 0, /* checksum */ + 31, /* max_lun_for_target */ + SASNVR_PCILAT_MAX, /* pci_latency */ + SASNVR1_BOOT_DRVR, /* options1 */ + SASNVR2_HEARTBEAT | SASNVR2_SINGLE_BUS /* options2 */ + | SASNVR2_SW_MUX_CTRL, + SASNVR_COAL_DIS, /* int_coalescing */ + SASNVR_CMDTHR_NONE, /* cmd_throttle */ + 3, /* dev_wait_time */ + 1, /* dev_wait_count */ + 0, /* spin_up_delay */ + 0, /* ssp_align_rate */ + { 0x50, 0x01, 0x08, 0x60, /* sas_addr */ + 0x00, 0x00, 0x00, 0x00 }, + { SASNVR_SPEED_AUTO }, /* phy_speed */ + { SASNVR_MUX_DISABLED }, /* SAS multiplexing */ + { 0 }, /* phy_flags */ + SASNVR_SORT_SAS_ADDR, /* sort_type */ + 3, /* dpm_reqcmd_lmt */ + 3, /* dpm_stndby_time */ + 0, /* dpm_active_time */ + { 0 }, /* phy_target_id */ + SASNVR_VSMH_DISABLED, /* virt_ses_mode */ + SASNVR_RWM_DEFAULT, /* read_write_mode */ + 0, /* link down timeout */ + { 0 } /* reserved */ +}; + +static u8 cmd_to_fls_func[] = { + 0xFF, + VDA_FLASH_READ, + VDA_FLASH_BEGINW, + VDA_FLASH_WRITE, + VDA_FLASH_COMMIT, + VDA_FLASH_CANCEL +}; + +static u8 esas2r_calc_byte_xor_cksum(u8 *addr, u32 len, u8 seed) +{ + u32 cksum = seed; + u8 *p = (u8 *)&cksum; + + while (len) { + if (((uintptr_t)addr & 3) == 0) + break; + + cksum = cksum ^ *addr; + addr++; + len--; + } + while (len >= sizeof(u32)) { + cksum = cksum ^ *(u32 *)addr; + addr += 4; + len -= 4; + } + while (len--) { + cksum = cksum ^ *addr; + addr++; + } + return p[0] ^ p[1] ^ p[2] ^ p[3]; +} + +static u8 esas2r_calc_byte_cksum(void *addr, u32 len, u8 seed) +{ + u8 *p = (u8 *)addr; + u8 cksum = seed; + + while (len--) + cksum = cksum + p[len]; + return cksum; +} + +/* Interrupt callback to process FM API write requests. */ +static void esas2r_fmapi_callback(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct atto_vda_flash_req *vrq = &rq->vrq->flash; + struct esas2r_flash_context *fc = + (struct esas2r_flash_context *)rq->interrupt_cx; + + if (rq->req_stat == RS_SUCCESS) { + /* Last request was successful. See what to do now. */ + switch (vrq->sub_func) { + case VDA_FLASH_BEGINW: + if (fc->sgc.cur_offset == NULL) + goto commit; + + vrq->sub_func = VDA_FLASH_WRITE; + rq->req_stat = RS_PENDING; + break; + + case VDA_FLASH_WRITE: +commit: + vrq->sub_func = VDA_FLASH_COMMIT; + rq->req_stat = RS_PENDING; + rq->interrupt_cb = fc->interrupt_cb; + break; + + default: + break; + } + } + + if (rq->req_stat != RS_PENDING) + /* + * All done. call the real callback to complete the FM API + * request. We should only get here if a BEGINW or WRITE + * operation failed. + */ + (*fc->interrupt_cb)(a, rq); +} + +/* + * Build a flash request based on the flash context. The request status + * is filled in on an error. + */ +static void build_flash_msg(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_flash_context *fc = + (struct esas2r_flash_context *)rq->interrupt_cx; + struct esas2r_sg_context *sgc = &fc->sgc; + u8 cksum = 0; + + /* calculate the checksum */ + if (fc->func == VDA_FLASH_BEGINW) { + if (sgc->cur_offset) + cksum = esas2r_calc_byte_xor_cksum(sgc->cur_offset, + sgc->length, + 0); + rq->interrupt_cb = esas2r_fmapi_callback; + } else { + rq->interrupt_cb = fc->interrupt_cb; + } + esas2r_build_flash_req(a, + rq, + fc->func, + cksum, + fc->flsh_addr, + sgc->length); + + esas2r_rq_free_sg_lists(rq, a); + + /* + * remember the length we asked for. we have to keep track of + * the current amount done so we know how much to compare when + * doing the verification phase. + */ + fc->curr_len = fc->sgc.length; + + if (sgc->cur_offset) { + /* setup the S/G context to build the S/G table */ + esas2r_sgc_init(sgc, a, rq, &rq->vrq->flash.data.sge[0]); + + if (!esas2r_build_sg_list(a, rq, sgc)) { + rq->req_stat = RS_BUSY; + return; + } + } else { + fc->sgc.length = 0; + } + + /* update the flsh_addr to the next one to write to */ + fc->flsh_addr += fc->curr_len; +} + +/* determine the method to process the flash request */ +static bool load_image(struct esas2r_adapter *a, struct esas2r_request *rq) +{ + /* + * assume we have more to do. if we return with the status set to + * RS_PENDING, FM API tasks will continue. + */ + rq->req_stat = RS_PENDING; + if (a->flags & AF_DEGRADED_MODE) + /* not suppported for now */; + else + build_flash_msg(a, rq); + + return rq->req_stat == RS_PENDING; +} + +/* boot image fixer uppers called before downloading the image. */ +static void fix_bios(struct esas2r_adapter *a, struct esas2r_flash_img *fi) +{ + struct esas2r_component_header *ch = &fi->cmp_hdr[CH_IT_BIOS]; + struct esas2r_pc_image *pi; + struct esas2r_boot_header *bh; + + pi = (struct esas2r_pc_image *)((u8 *)fi + ch->image_offset); + bh = + (struct esas2r_boot_header *)((u8 *)pi + + le16_to_cpu(pi->header_offset)); + bh->device_id = cpu_to_le16(a->pcid->device); + + /* Recalculate the checksum in the PNP header if there */ + if (pi->pnp_offset) { + u8 *pnp_header_bytes = + ((u8 *)pi + le16_to_cpu(pi->pnp_offset)); + + /* Identifier - dword that starts at byte 10 */ + *((u32 *)&pnp_header_bytes[10]) = + cpu_to_le32(MAKEDWORD(a->pcid->subsystem_vendor, + a->pcid->subsystem_device)); + + /* Checksum - byte 9 */ + pnp_header_bytes[9] -= esas2r_calc_byte_cksum(pnp_header_bytes, + 32, 0); + } + + /* Recalculate the checksum needed by the PC */ + pi->checksum = pi->checksum - + esas2r_calc_byte_cksum((u8 *)pi, ch->length, 0); +} + +static void fix_efi(struct esas2r_adapter *a, struct esas2r_flash_img *fi) +{ + struct esas2r_component_header *ch = &fi->cmp_hdr[CH_IT_EFI]; + u32 len = ch->length; + u32 offset = ch->image_offset; + struct esas2r_efi_image *ei; + struct esas2r_boot_header *bh; + + while (len) { + u32 thislen; + + ei = (struct esas2r_efi_image *)((u8 *)fi + offset); + bh = (struct esas2r_boot_header *)((u8 *)ei + + le16_to_cpu( + ei->header_offset)); + bh->device_id = cpu_to_le16(a->pcid->device); + thislen = (u32)le16_to_cpu(bh->image_length) * 512; + + if (thislen > len) + break; + + len -= thislen; + offset += thislen; + } +} + +/* Complete a FM API request with the specified status. */ +static bool complete_fmapi_req(struct esas2r_adapter *a, + struct esas2r_request *rq, u8 fi_stat) +{ + struct esas2r_flash_context *fc = + (struct esas2r_flash_context *)rq->interrupt_cx; + struct esas2r_flash_img *fi = fc->fi; + + fi->status = fi_stat; + fi->driver_error = rq->req_stat; + rq->interrupt_cb = NULL; + rq->req_stat = RS_SUCCESS; + + if (fi_stat != FI_STAT_IMG_VER) + memset(fc->scratch, 0, FM_BUF_SZ); + + esas2r_enable_heartbeat(a); + esas2r_lock_clear_flags(&a->flags, AF_FLASH_LOCK); + return false; +} + +/* Process each phase of the flash download process. */ +static void fw_download_proc(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_flash_context *fc = + (struct esas2r_flash_context *)rq->interrupt_cx; + struct esas2r_flash_img *fi = fc->fi; + struct esas2r_component_header *ch; + u32 len; + u8 *p, *q; + + /* If the previous operation failed, just return. */ + if (rq->req_stat != RS_SUCCESS) + goto error; + + /* + * If an upload just completed and the compare length is non-zero, + * then we just read back part of the image we just wrote. verify the + * section and continue reading until the entire image is verified. + */ + if (fc->func == VDA_FLASH_READ + && fc->cmp_len) { + ch = &fi->cmp_hdr[fc->comp_typ]; + + p = fc->scratch; + q = (u8 *)fi /* start of the whole gob */ + + ch->image_offset /* start of the current image */ + + ch->length /* end of the current image */ + - fc->cmp_len; /* where we are now */ + + /* + * NOTE - curr_len is the exact count of bytes for the read + * even when the end is read and its not a full buffer + */ + for (len = fc->curr_len; len; len--) + if (*p++ != *q++) + goto error; + + fc->cmp_len -= fc->curr_len; /* # left to compare */ + + /* Update fc and determine the length for the next upload */ + if (fc->cmp_len > FM_BUF_SZ) + fc->sgc.length = FM_BUF_SZ; + else + fc->sgc.length = fc->cmp_len; + + fc->sgc.cur_offset = fc->sgc_offset + + ((u8 *)fc->scratch - (u8 *)fi); + } + + /* + * This code uses a 'while' statement since the next component may + * have a length = zero. This can happen since some components are + * not required. At the end of this 'while' we set up the length + * for the next request and therefore sgc.length can be = 0. + */ + while (fc->sgc.length == 0) { + ch = &fi->cmp_hdr[fc->comp_typ]; + + switch (fc->task) { + case FMTSK_ERASE_BOOT: + /* the BIOS image is written next */ + ch = &fi->cmp_hdr[CH_IT_BIOS]; + if (ch->length == 0) + goto no_bios; + + fc->task = FMTSK_WRTBIOS; + fc->func = VDA_FLASH_BEGINW; + fc->comp_typ = CH_IT_BIOS; + fc->flsh_addr = FLS_OFFSET_BOOT; + fc->sgc.length = ch->length; + fc->sgc.cur_offset = fc->sgc_offset + + ch->image_offset; + break; + + case FMTSK_WRTBIOS: + /* + * The BIOS image has been written - read it and + * verify it + */ + fc->task = FMTSK_READBIOS; + fc->func = VDA_FLASH_READ; + fc->flsh_addr = FLS_OFFSET_BOOT; + fc->cmp_len = ch->length; + fc->sgc.length = FM_BUF_SZ; + fc->sgc.cur_offset = fc->sgc_offset + + ((u8 *)fc->scratch - + (u8 *)fi); + break; + + case FMTSK_READBIOS: +no_bios: + /* + * Mark the component header status for the image + * completed + */ + ch->status = CH_STAT_SUCCESS; + + /* The MAC image is written next */ + ch = &fi->cmp_hdr[CH_IT_MAC]; + if (ch->length == 0) + goto no_mac; + + fc->task = FMTSK_WRTMAC; + fc->func = VDA_FLASH_BEGINW; + fc->comp_typ = CH_IT_MAC; + fc->flsh_addr = FLS_OFFSET_BOOT + + fi->cmp_hdr[CH_IT_BIOS].length; + fc->sgc.length = ch->length; + fc->sgc.cur_offset = fc->sgc_offset + + ch->image_offset; + break; + + case FMTSK_WRTMAC: + /* The MAC image has been written - read and verify */ + fc->task = FMTSK_READMAC; + fc->func = VDA_FLASH_READ; + fc->flsh_addr -= ch->length; + fc->cmp_len = ch->length; + fc->sgc.length = FM_BUF_SZ; + fc->sgc.cur_offset = fc->sgc_offset + + ((u8 *)fc->scratch - + (u8 *)fi); + break; + + case FMTSK_READMAC: +no_mac: + /* + * Mark the component header status for the image + * completed + */ + ch->status = CH_STAT_SUCCESS; + + /* The EFI image is written next */ + ch = &fi->cmp_hdr[CH_IT_EFI]; + if (ch->length == 0) + goto no_efi; + + fc->task = FMTSK_WRTEFI; + fc->func = VDA_FLASH_BEGINW; + fc->comp_typ = CH_IT_EFI; + fc->flsh_addr = FLS_OFFSET_BOOT + + fi->cmp_hdr[CH_IT_BIOS].length + + fi->cmp_hdr[CH_IT_MAC].length; + fc->sgc.length = ch->length; + fc->sgc.cur_offset = fc->sgc_offset + + ch->image_offset; + break; + + case FMTSK_WRTEFI: + /* The EFI image has been written - read and verify */ + fc->task = FMTSK_READEFI; + fc->func = VDA_FLASH_READ; + fc->flsh_addr -= ch->length; + fc->cmp_len = ch->length; + fc->sgc.length = FM_BUF_SZ; + fc->sgc.cur_offset = fc->sgc_offset + + ((u8 *)fc->scratch - + (u8 *)fi); + break; + + case FMTSK_READEFI: +no_efi: + /* + * Mark the component header status for the image + * completed + */ + ch->status = CH_STAT_SUCCESS; + + /* The CFG image is written next */ + ch = &fi->cmp_hdr[CH_IT_CFG]; + + if (ch->length == 0) + goto no_cfg; + fc->task = FMTSK_WRTCFG; + fc->func = VDA_FLASH_BEGINW; + fc->comp_typ = CH_IT_CFG; + fc->flsh_addr = FLS_OFFSET_CPYR - ch->length; + fc->sgc.length = ch->length; + fc->sgc.cur_offset = fc->sgc_offset + + ch->image_offset; + break; + + case FMTSK_WRTCFG: + /* The CFG image has been written - read and verify */ + fc->task = FMTSK_READCFG; + fc->func = VDA_FLASH_READ; + fc->flsh_addr = FLS_OFFSET_CPYR - ch->length; + fc->cmp_len = ch->length; + fc->sgc.length = FM_BUF_SZ; + fc->sgc.cur_offset = fc->sgc_offset + + ((u8 *)fc->scratch - + (u8 *)fi); + break; + + case FMTSK_READCFG: +no_cfg: + /* + * Mark the component header status for the image + * completed + */ + ch->status = CH_STAT_SUCCESS; + + /* + * The download is complete. If in degraded mode, + * attempt a chip reset. + */ + if (a->flags & AF_DEGRADED_MODE) + esas2r_local_reset_adapter(a); + + a->flash_ver = fi->cmp_hdr[CH_IT_BIOS].version; + esas2r_print_flash_rev(a); + + /* Update the type of boot image on the card */ + memcpy(a->image_type, fi->rel_version, + sizeof(fi->rel_version)); + complete_fmapi_req(a, rq, FI_STAT_SUCCESS); + return; + } + + /* If verifying, don't try reading more than what's there */ + if (fc->func == VDA_FLASH_READ + && fc->sgc.length > fc->cmp_len) + fc->sgc.length = fc->cmp_len; + } + + /* Build the request to perform the next action */ + if (!load_image(a, rq)) { +error: + if (fc->comp_typ < fi->num_comps) { + ch = &fi->cmp_hdr[fc->comp_typ]; + ch->status = CH_STAT_FAILED; + } + + complete_fmapi_req(a, rq, FI_STAT_FAILED); + } +} + +/* Determine the flash image adaptyp for this adapter */ +static u8 get_fi_adap_type(struct esas2r_adapter *a) +{ + u8 type; + + /* use the device ID to get the correct adap_typ for this HBA */ + switch (a->pcid->device) { + case ATTO_DID_INTEL_IOP348: + type = FI_AT_SUN_LAKE; + break; + + case ATTO_DID_MV_88RC9580: + case ATTO_DID_MV_88RC9580TS: + case ATTO_DID_MV_88RC9580TSE: + case ATTO_DID_MV_88RC9580TL: + type = FI_AT_MV_9580; + break; + + default: + type = FI_AT_UNKNWN; + break; + } + + return type; +} + +/* Size of config + copyright + flash_ver images, 0 for failure. */ +static u32 chk_cfg(u8 *cfg, u32 length, u32 *flash_ver) +{ + u16 *pw = (u16 *)cfg - 1; + u32 sz = 0; + u32 len = length; + + if (len == 0) + len = FM_BUF_SZ; + + if (flash_ver) + *flash_ver = 0; + + while (true) { + u16 type; + u16 size; + + type = le16_to_cpu(*pw--); + size = le16_to_cpu(*pw--); + + if (type != FBT_CPYR + && type != FBT_SETUP + && type != FBT_FLASH_VER) + break; + + if (type == FBT_FLASH_VER + && flash_ver) + *flash_ver = le32_to_cpu(*(u32 *)(pw - 1)); + + sz += size + (2 * sizeof(u16)); + pw -= size / sizeof(u16); + + if (sz > len - (2 * sizeof(u16))) + break; + } + + /* See if we are comparing the size to the specified length */ + if (length && sz != length) + return 0; + + return sz; +} + +/* Verify that the boot image is valid */ +static u8 chk_boot(u8 *boot_img, u32 length) +{ + struct esas2r_boot_image *bi = (struct esas2r_boot_image *)boot_img; + u16 hdroffset = le16_to_cpu(bi->header_offset); + struct esas2r_boot_header *bh; + + if (bi->signature != le16_to_cpu(0xaa55) + || (long)hdroffset > + (long)(65536L - sizeof(struct esas2r_boot_header)) + || (hdroffset & 3) + || (hdroffset < sizeof(struct esas2r_boot_image)) + || ((u32)hdroffset + sizeof(struct esas2r_boot_header) > length)) + return 0xff; + + bh = (struct esas2r_boot_header *)((char *)bi + hdroffset); + + if (bh->signature[0] != 'P' + || bh->signature[1] != 'C' + || bh->signature[2] != 'I' + || bh->signature[3] != 'R' + || le16_to_cpu(bh->struct_length) < + (u16)sizeof(struct esas2r_boot_header) + || bh->class_code[2] != 0x01 + || bh->class_code[1] != 0x04 + || bh->class_code[0] != 0x00 + || (bh->code_type != CODE_TYPE_PC + && bh->code_type != CODE_TYPE_OPEN + && bh->code_type != CODE_TYPE_EFI)) + return 0xff; + + return bh->code_type; +} + +/* The sum of all the WORDS of the image */ +static u16 calc_fi_checksum(struct esas2r_flash_context *fc) +{ + struct esas2r_flash_img *fi = fc->fi; + u16 cksum; + u32 len; + u16 *pw; + + for (len = (fi->length - fc->fi_hdr_len) / 2, + pw = (u16 *)((u8 *)fi + fc->fi_hdr_len), + cksum = 0; + len; + len--, pw++) + cksum = cksum + le16_to_cpu(*pw); + + return cksum; +} + +/* + * Verify the flash image structure. The following verifications will + * be performed: + * 1) verify the fi_version is correct + * 2) verify the checksum of the entire image. + * 3) validate the adap_typ, action and length fields. + * 4) valdiate each component header. check the img_type and + * length fields + * 5) valdiate each component image. validate signatures and + * local checksums + */ +static bool verify_fi(struct esas2r_adapter *a, + struct esas2r_flash_context *fc) +{ + struct esas2r_flash_img *fi = fc->fi; + u8 type; + bool imgerr; + u16 i; + u32 len; + struct esas2r_component_header *ch; + + /* Verify the length - length must even since we do a word checksum */ + len = fi->length; + + if ((len & 1) + || len < fc->fi_hdr_len) { + fi->status = FI_STAT_LENGTH; + return false; + } + + /* Get adapter type and verify type in flash image */ + type = get_fi_adap_type(a); + if ((type == FI_AT_UNKNWN) || (fi->adap_typ != type)) { + fi->status = FI_STAT_ADAPTYP; + return false; + } + + /* + * Loop through each component and verify the img_type and length + * fields. Keep a running count of the sizes sooze we can verify total + * size to additive size. + */ + imgerr = false; + + for (i = 0, len = 0, ch = fi->cmp_hdr; + i < fi->num_comps; + i++, ch++) { + bool cmperr = false; + + /* + * Verify that the component header has the same index as the + * image type. The headers must be ordered correctly + */ + if (i != ch->img_type) { + imgerr = true; + ch->status = CH_STAT_INVALID; + continue; + } + + switch (ch->img_type) { + case CH_IT_BIOS: + type = CODE_TYPE_PC; + break; + + case CH_IT_MAC: + type = CODE_TYPE_OPEN; + break; + + case CH_IT_EFI: + type = CODE_TYPE_EFI; + break; + } + + switch (ch->img_type) { + case CH_IT_FW: + case CH_IT_NVR: + break; + + case CH_IT_BIOS: + case CH_IT_MAC: + case CH_IT_EFI: + if (ch->length & 0x1ff) + cmperr = true; + + /* Test if component image is present */ + if (ch->length == 0) + break; + + /* Image is present - verify the image */ + if (chk_boot((u8 *)fi + ch->image_offset, ch->length) + != type) + cmperr = true; + + break; + + case CH_IT_CFG: + + /* Test if component image is present */ + if (ch->length == 0) { + cmperr = true; + break; + } + + /* Image is present - verify the image */ + if (!chk_cfg((u8 *)fi + ch->image_offset + ch->length, + ch->length, NULL)) + cmperr = true; + + break; + + default: + + fi->status = FI_STAT_UNKNOWN; + return false; + } + + if (cmperr) { + imgerr = true; + ch->status = CH_STAT_INVALID; + } else { + ch->status = CH_STAT_PENDING; + len += ch->length; + } + } + + if (imgerr) { + fi->status = FI_STAT_MISSING; + return false; + } + + /* Compare fi->length to the sum of ch->length fields */ + if (len != fi->length - fc->fi_hdr_len) { + fi->status = FI_STAT_LENGTH; + return false; + } + + /* Compute the checksum - it should come out zero */ + if (fi->checksum != calc_fi_checksum(fc)) { + fi->status = FI_STAT_CHKSUM; + return false; + } + + return true; +} + +/* Fill in the FS IOCTL response data from a completed request. */ +static void esas2r_complete_fs_ioctl(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_ioctl_fs *fs = + (struct esas2r_ioctl_fs *)rq->interrupt_cx; + + if (rq->vrq->flash.sub_func == VDA_FLASH_COMMIT) + esas2r_enable_heartbeat(a); + + fs->driver_error = rq->req_stat; + + if (fs->driver_error == RS_SUCCESS) + fs->status = ATTO_STS_SUCCESS; + else + fs->status = ATTO_STS_FAILED; +} + +/* Prepare an FS IOCTL request to be sent to the firmware. */ +bool esas2r_process_fs_ioctl(struct esas2r_adapter *a, + struct esas2r_ioctl_fs *fs, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc) +{ + u8 cmdcnt = (u8)ARRAY_SIZE(cmd_to_fls_func); + struct esas2r_ioctlfs_command *fsc = &fs->command; + u8 func = 0; + u32 datalen; + + fs->status = ATTO_STS_FAILED; + fs->driver_error = RS_PENDING; + + if (fs->version > ESAS2R_FS_VER) { + fs->status = ATTO_STS_INV_VERSION; + return false; + } + + func = cmd_to_fls_func[fsc->command]; + if (fsc->command >= cmdcnt || func == 0xFF) { + fs->status = ATTO_STS_INV_FUNC; + return false; + } + + if (fsc->command != ESAS2R_FS_CMD_CANCEL) { + if ((a->pcid->device != ATTO_DID_MV_88RC9580 + || fs->adap_type != ESAS2R_FS_AT_ESASRAID2) + && (a->pcid->device != ATTO_DID_MV_88RC9580TS + || fs->adap_type != ESAS2R_FS_AT_TSSASRAID2) + && (a->pcid->device != ATTO_DID_MV_88RC9580TSE + || fs->adap_type != ESAS2R_FS_AT_TSSASRAID2E) + && (a->pcid->device != ATTO_DID_MV_88RC9580TL + || fs->adap_type != ESAS2R_FS_AT_TLSASHBA)) { + fs->status = ATTO_STS_INV_ADAPTER; + return false; + } + + if (fs->driver_ver > ESAS2R_FS_DRVR_VER) { + fs->status = ATTO_STS_INV_DRVR_VER; + return false; + } + } + + if (a->flags & AF_DEGRADED_MODE) { + fs->status = ATTO_STS_DEGRADED; + return false; + } + + rq->interrupt_cb = esas2r_complete_fs_ioctl; + rq->interrupt_cx = fs; + datalen = le32_to_cpu(fsc->length); + esas2r_build_flash_req(a, + rq, + func, + fsc->checksum, + le32_to_cpu(fsc->flash_addr), + datalen); + + if (func == VDA_FLASH_WRITE + || func == VDA_FLASH_READ) { + if (datalen == 0) { + fs->status = ATTO_STS_INV_FUNC; + return false; + } + + esas2r_sgc_init(sgc, a, rq, rq->vrq->flash.data.sge); + sgc->length = datalen; + + if (!esas2r_build_sg_list(a, rq, sgc)) { + fs->status = ATTO_STS_OUT_OF_RSRC; + return false; + } + } + + if (func == VDA_FLASH_COMMIT) + esas2r_disable_heartbeat(a); + + esas2r_start_request(a, rq); + + return true; +} + +static bool esas2r_flash_access(struct esas2r_adapter *a, u32 function) +{ + u32 starttime; + u32 timeout; + u32 intstat; + u32 doorbell; + + /* Disable chip interrupts awhile */ + if (function == DRBL_FLASH_REQ) + esas2r_disable_chip_interrupts(a); + + /* Issue the request to the firmware */ + esas2r_write_register_dword(a, MU_DOORBELL_IN, function); + + /* Now wait for the firmware to process it */ + starttime = jiffies_to_msecs(jiffies); + timeout = a->flags & + (AF_CHPRST_PENDING | AF_DISC_PENDING) ? 40000 : 5000; + + while (true) { + intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT); + + if (intstat & MU_INTSTAT_DRBL) { + /* Got a doorbell interrupt. Check for the function */ + doorbell = + esas2r_read_register_dword(a, MU_DOORBELL_OUT); + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + if (doorbell & function) + break; + } + + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + if ((jiffies_to_msecs(jiffies) - starttime) > timeout) { + /* + * Iimeout. If we were requesting flash access, + * indicate we are done so the firmware knows we gave + * up. If this was a REQ, we also need to re-enable + * chip interrupts. + */ + if (function == DRBL_FLASH_REQ) { + esas2r_hdebug("flash access timeout"); + esas2r_write_register_dword(a, MU_DOORBELL_IN, + DRBL_FLASH_DONE); + esas2r_enable_chip_interrupts(a); + } else { + esas2r_hdebug("flash release timeout"); + } + + return false; + } + } + + /* if we're done, re-enable chip interrupts */ + if (function == DRBL_FLASH_DONE) + esas2r_enable_chip_interrupts(a); + + return true; +} + +#define WINDOW_SIZE ((signed int)MW_DATA_WINDOW_SIZE) + +bool esas2r_read_flash_block(struct esas2r_adapter *a, + void *to, + u32 from, + u32 size) +{ + u8 *end = (u8 *)to; + + /* Try to acquire access to the flash */ + if (!esas2r_flash_access(a, DRBL_FLASH_REQ)) + return false; + + while (size) { + u32 len; + u32 offset; + u32 iatvr; + + if (a->flags2 & AF2_SERIAL_FLASH) + iatvr = MW_DATA_ADDR_SER_FLASH + (from & -WINDOW_SIZE); + else + iatvr = MW_DATA_ADDR_PAR_FLASH + (from & -WINDOW_SIZE); + + esas2r_map_data_window(a, iatvr); + offset = from & (WINDOW_SIZE - 1); + len = size; + + if (len > WINDOW_SIZE - offset) + len = WINDOW_SIZE - offset; + + from += len; + size -= len; + + while (len--) { + *end++ = esas2r_read_data_byte(a, offset); + offset++; + } + } + + /* Release flash access */ + esas2r_flash_access(a, DRBL_FLASH_DONE); + return true; +} + +bool esas2r_read_flash_rev(struct esas2r_adapter *a) +{ + u8 bytes[256]; + u16 *pw; + u16 *pwstart; + u16 type; + u16 size; + u32 sz; + + sz = sizeof(bytes); + pw = (u16 *)(bytes + sz); + pwstart = (u16 *)bytes + 2; + + if (!esas2r_read_flash_block(a, bytes, FLS_OFFSET_CPYR - sz, sz)) + goto invalid_rev; + + while (pw >= pwstart) { + pw--; + type = le16_to_cpu(*pw); + pw--; + size = le16_to_cpu(*pw); + pw -= size / 2; + + if (type == FBT_CPYR + || type == FBT_SETUP + || pw < pwstart) + continue; + + if (type == FBT_FLASH_VER) + a->flash_ver = le32_to_cpu(*(u32 *)pw); + + break; + } + +invalid_rev: + return esas2r_print_flash_rev(a); +} + +bool esas2r_print_flash_rev(struct esas2r_adapter *a) +{ + u16 year = LOWORD(a->flash_ver); + u8 day = LOBYTE(HIWORD(a->flash_ver)); + u8 month = HIBYTE(HIWORD(a->flash_ver)); + + if (day == 0 + || month == 0 + || day > 31 + || month > 12 + || year < 2006 + || year > 9999) { + strcpy(a->flash_rev, "not found"); + a->flash_ver = 0; + return false; + } + + sprintf(a->flash_rev, "%02d/%02d/%04d", month, day, year); + esas2r_hdebug("flash version: %s", a->flash_rev); + return true; +} + +/* + * Find the type of boot image type that is currently in the flash. + * The chip only has a 64 KB PCI-e expansion ROM + * size so only one image can be flashed at a time. + */ +bool esas2r_read_image_type(struct esas2r_adapter *a) +{ + u8 bytes[256]; + struct esas2r_boot_image *bi; + struct esas2r_boot_header *bh; + u32 sz; + u32 len; + u32 offset; + + /* Start at the base of the boot images and look for a valid image */ + sz = sizeof(bytes); + len = FLS_LENGTH_BOOT; + offset = 0; + + while (true) { + if (!esas2r_read_flash_block(a, bytes, FLS_OFFSET_BOOT + + offset, + sz)) + goto invalid_rev; + + bi = (struct esas2r_boot_image *)bytes; + bh = (struct esas2r_boot_header *)((u8 *)bi + + le16_to_cpu( + bi->header_offset)); + if (bi->signature != cpu_to_le16(0xAA55)) + goto invalid_rev; + + if (bh->code_type == CODE_TYPE_PC) { + strcpy(a->image_type, "BIOS"); + + return true; + } else if (bh->code_type == CODE_TYPE_EFI) { + struct esas2r_efi_image *ei; + + /* + * So we have an EFI image. There are several types + * so see which architecture we have. + */ + ei = (struct esas2r_efi_image *)bytes; + + switch (le16_to_cpu(ei->machine_type)) { + case EFI_MACHINE_IA32: + strcpy(a->image_type, "EFI 32-bit"); + return true; + + case EFI_MACHINE_IA64: + strcpy(a->image_type, "EFI itanium"); + return true; + + case EFI_MACHINE_X64: + strcpy(a->image_type, "EFI 64-bit"); + return true; + + case EFI_MACHINE_EBC: + strcpy(a->image_type, "EFI EBC"); + return true; + + default: + goto invalid_rev; + } + } else { + u32 thislen; + + /* jump to the next image */ + thislen = (u32)le16_to_cpu(bh->image_length) * 512; + if (thislen == 0 + || thislen + offset > len + || bh->indicator == INDICATOR_LAST) + break; + + offset += thislen; + } + } + +invalid_rev: + strcpy(a->image_type, "no boot images"); + return false; +} + +/* + * Read and validate current NVRAM parameters by accessing + * physical NVRAM directly. if currently stored parameters are + * invalid, use the defaults. + */ +bool esas2r_nvram_read_direct(struct esas2r_adapter *a) +{ + bool result; + + if (down_interruptible(&a->nvram_semaphore)) + return false; + + if (!esas2r_read_flash_block(a, a->nvram, FLS_OFFSET_NVR, + sizeof(struct esas2r_sas_nvram))) { + esas2r_hdebug("NVRAM read failed, using defaults"); + return false; + } + + result = esas2r_nvram_validate(a); + + up(&a->nvram_semaphore); + + return result; +} + +/* Interrupt callback to process NVRAM completions. */ +static void esas2r_nvram_callback(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct atto_vda_flash_req *vrq = &rq->vrq->flash; + + if (rq->req_stat == RS_SUCCESS) { + /* last request was successful. see what to do now. */ + + switch (vrq->sub_func) { + case VDA_FLASH_BEGINW: + vrq->sub_func = VDA_FLASH_WRITE; + rq->req_stat = RS_PENDING; + break; + + case VDA_FLASH_WRITE: + vrq->sub_func = VDA_FLASH_COMMIT; + rq->req_stat = RS_PENDING; + break; + + case VDA_FLASH_READ: + esas2r_nvram_validate(a); + break; + + case VDA_FLASH_COMMIT: + default: + break; + } + } + + if (rq->req_stat != RS_PENDING) { + /* update the NVRAM state */ + if (rq->req_stat == RS_SUCCESS) + esas2r_lock_set_flags(&a->flags, AF_NVR_VALID); + else + esas2r_lock_clear_flags(&a->flags, AF_NVR_VALID); + + esas2r_enable_heartbeat(a); + + up(&a->nvram_semaphore); + } +} + +/* + * Write the contents of nvram to the adapter's physical NVRAM. + * The cached copy of the NVRAM is also updated. + */ +bool esas2r_nvram_write(struct esas2r_adapter *a, struct esas2r_request *rq, + struct esas2r_sas_nvram *nvram) +{ + struct esas2r_sas_nvram *n = nvram; + u8 sas_address_bytes[8]; + u32 *sas_address_dwords = (u32 *)&sas_address_bytes[0]; + struct atto_vda_flash_req *vrq = &rq->vrq->flash; + + if (a->flags & AF_DEGRADED_MODE) + return false; + + if (down_interruptible(&a->nvram_semaphore)) + return false; + + if (n == NULL) + n = a->nvram; + + /* check the validity of the settings */ + if (n->version > SASNVR_VERSION) { + up(&a->nvram_semaphore); + return false; + } + + memcpy(&sas_address_bytes[0], n->sas_addr, 8); + + if (sas_address_bytes[0] != 0x50 + || sas_address_bytes[1] != 0x01 + || sas_address_bytes[2] != 0x08 + || (sas_address_bytes[3] & 0xF0) != 0x60 + || ((sas_address_bytes[3] & 0x0F) | sas_address_dwords[1]) == 0) { + up(&a->nvram_semaphore); + return false; + } + + if (n->spin_up_delay > SASNVR_SPINUP_MAX) + n->spin_up_delay = SASNVR_SPINUP_MAX; + + n->version = SASNVR_VERSION; + n->checksum = n->checksum - esas2r_nvramcalc_cksum(n); + memcpy(a->nvram, n, sizeof(struct esas2r_sas_nvram)); + + /* write the NVRAM */ + n = a->nvram; + esas2r_disable_heartbeat(a); + + esas2r_build_flash_req(a, + rq, + VDA_FLASH_BEGINW, + esas2r_nvramcalc_xor_cksum(n), + FLS_OFFSET_NVR, + sizeof(struct esas2r_sas_nvram)); + + if (a->flags & AF_LEGACY_SGE_MODE) { + + vrq->data.sge[0].length = + cpu_to_le32(SGE_LAST | + sizeof(struct esas2r_sas_nvram)); + vrq->data.sge[0].address = cpu_to_le64( + a->uncached_phys + (u64)((u8 *)n - a->uncached)); + } else { + vrq->data.prde[0].ctl_len = + cpu_to_le32(sizeof(struct esas2r_sas_nvram)); + vrq->data.prde[0].address = cpu_to_le64( + a->uncached_phys + + (u64)((u8 *)n - a->uncached)); + } + rq->interrupt_cb = esas2r_nvram_callback; + esas2r_start_request(a, rq); + return true; +} + +/* Validate the cached NVRAM. if the NVRAM is invalid, load the defaults. */ +bool esas2r_nvram_validate(struct esas2r_adapter *a) +{ + struct esas2r_sas_nvram *n = a->nvram; + bool rslt = false; + + if (n->signature[0] != 'E' + || n->signature[1] != 'S' + || n->signature[2] != 'A' + || n->signature[3] != 'S') { + esas2r_hdebug("invalid NVRAM signature"); + } else if (esas2r_nvramcalc_cksum(n)) { + esas2r_hdebug("invalid NVRAM checksum"); + } else if (n->version > SASNVR_VERSION) { + esas2r_hdebug("invalid NVRAM version"); + } else { + esas2r_lock_set_flags(&a->flags, AF_NVR_VALID); + rslt = true; + } + + if (rslt == false) { + esas2r_hdebug("using defaults"); + esas2r_nvram_set_defaults(a); + } + + return rslt; +} + +/* + * Set the cached NVRAM to defaults. note that this function sets the default + * NVRAM when it has been determined that the physical NVRAM is invalid. + * In this case, the SAS address is fabricated. + */ +void esas2r_nvram_set_defaults(struct esas2r_adapter *a) +{ + struct esas2r_sas_nvram *n = a->nvram; + u32 time = jiffies_to_msecs(jiffies); + + esas2r_lock_clear_flags(&a->flags, AF_NVR_VALID); + memcpy(n, &default_sas_nvram, sizeof(struct esas2r_sas_nvram)); + n->sas_addr[3] |= 0x0F; + n->sas_addr[4] = HIBYTE(LOWORD(time)); + n->sas_addr[5] = LOBYTE(LOWORD(time)); + n->sas_addr[6] = a->pcid->bus->number; + n->sas_addr[7] = a->pcid->devfn; +} + +void esas2r_nvram_get_defaults(struct esas2r_adapter *a, + struct esas2r_sas_nvram *nvram) +{ + u8 sas_addr[8]; + + /* + * in case we are copying the defaults into the adapter, copy the SAS + * address out first. + */ + memcpy(&sas_addr[0], a->nvram->sas_addr, 8); + memcpy(nvram, &default_sas_nvram, sizeof(struct esas2r_sas_nvram)); + memcpy(&nvram->sas_addr[0], &sas_addr[0], 8); +} + +bool esas2r_fm_api(struct esas2r_adapter *a, struct esas2r_flash_img *fi, + struct esas2r_request *rq, struct esas2r_sg_context *sgc) +{ + struct esas2r_flash_context *fc = &a->flash_context; + u8 j; + struct esas2r_component_header *ch; + + if (esas2r_lock_set_flags(&a->flags, AF_FLASH_LOCK) & AF_FLASH_LOCK) { + /* flag was already set */ + fi->status = FI_STAT_BUSY; + return false; + } + + memcpy(&fc->sgc, sgc, sizeof(struct esas2r_sg_context)); + sgc = &fc->sgc; + fc->fi = fi; + fc->sgc_offset = sgc->cur_offset; + rq->req_stat = RS_SUCCESS; + rq->interrupt_cx = fc; + + switch (fi->fi_version) { + case FI_VERSION_1: + fc->scratch = ((struct esas2r_flash_img *)fi)->scratch_buf; + fc->num_comps = FI_NUM_COMPS_V1; + fc->fi_hdr_len = sizeof(struct esas2r_flash_img); + break; + + default: + return complete_fmapi_req(a, rq, FI_STAT_IMG_VER); + } + + if (a->flags & AF_DEGRADED_MODE) + return complete_fmapi_req(a, rq, FI_STAT_DEGRADED); + + switch (fi->action) { + case FI_ACT_DOWN: /* Download the components */ + /* Verify the format of the flash image */ + if (!verify_fi(a, fc)) + return complete_fmapi_req(a, rq, fi->status); + + /* Adjust the BIOS fields that are dependent on the HBA */ + ch = &fi->cmp_hdr[CH_IT_BIOS]; + + if (ch->length) + fix_bios(a, fi); + + /* Adjust the EFI fields that are dependent on the HBA */ + ch = &fi->cmp_hdr[CH_IT_EFI]; + + if (ch->length) + fix_efi(a, fi); + + /* + * Since the image was just modified, compute the checksum on + * the modified image. First update the CRC for the composite + * expansion ROM image. + */ + fi->checksum = calc_fi_checksum(fc); + + /* Disable the heartbeat */ + esas2r_disable_heartbeat(a); + + /* Now start up the download sequence */ + fc->task = FMTSK_ERASE_BOOT; + fc->func = VDA_FLASH_BEGINW; + fc->comp_typ = CH_IT_CFG; + fc->flsh_addr = FLS_OFFSET_BOOT; + fc->sgc.length = FLS_LENGTH_BOOT; + fc->sgc.cur_offset = NULL; + + /* Setup the callback address */ + fc->interrupt_cb = fw_download_proc; + break; + + case FI_ACT_UPSZ: /* Get upload sizes */ + fi->adap_typ = get_fi_adap_type(a); + fi->flags = 0; + fi->num_comps = fc->num_comps; + fi->length = fc->fi_hdr_len; + + /* Report the type of boot image in the rel_version string */ + memcpy(fi->rel_version, a->image_type, + sizeof(fi->rel_version)); + + /* Build the component headers */ + for (j = 0, ch = fi->cmp_hdr; + j < fi->num_comps; + j++, ch++) { + ch->img_type = j; + ch->status = CH_STAT_PENDING; + ch->length = 0; + ch->version = 0xffffffff; + ch->image_offset = 0; + ch->pad[0] = 0; + ch->pad[1] = 0; + } + + if (a->flash_ver != 0) { + fi->cmp_hdr[CH_IT_BIOS].version = + fi->cmp_hdr[CH_IT_MAC].version = + fi->cmp_hdr[CH_IT_EFI].version = + fi->cmp_hdr[CH_IT_CFG].version + = a->flash_ver; + + fi->cmp_hdr[CH_IT_BIOS].status = + fi->cmp_hdr[CH_IT_MAC].status = + fi->cmp_hdr[CH_IT_EFI].status = + fi->cmp_hdr[CH_IT_CFG].status = + CH_STAT_SUCCESS; + + return complete_fmapi_req(a, rq, FI_STAT_SUCCESS); + } + + /* fall through */ + + case FI_ACT_UP: /* Upload the components */ + default: + return complete_fmapi_req(a, rq, FI_STAT_INVALID); + } + + /* + * If we make it here, fc has been setup to do the first task. Call + * load_image to format the request, start it, and get out. The + * interrupt code will call the callback when the first message is + * complete. + */ + if (!load_image(a, rq)) + return complete_fmapi_req(a, rq, FI_STAT_FAILED); + + esas2r_start_request(a, rq); + + return true; +} diff --git a/drivers/scsi/esas2r/esas2r_init.c b/drivers/scsi/esas2r/esas2r_init.c new file mode 100644 index 000000000000..3a798e7d5c56 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_init.c @@ -0,0 +1,1773 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_init.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com)mpt3sas/mpt3sas_trigger_diag. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +static bool esas2r_initmem_alloc(struct esas2r_adapter *a, + struct esas2r_mem_desc *mem_desc, + u32 align) +{ + mem_desc->esas2r_param = mem_desc->size + align; + mem_desc->virt_addr = NULL; + mem_desc->phys_addr = 0; + mem_desc->esas2r_data = dma_alloc_coherent(&a->pcid->dev, + (size_t)mem_desc-> + esas2r_param, + (dma_addr_t *)&mem_desc-> + phys_addr, + GFP_KERNEL); + + if (mem_desc->esas2r_data == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to allocate %lu bytes of consistent memory!", + (long + unsigned + int)mem_desc->esas2r_param); + return false; + } + + mem_desc->virt_addr = PTR_ALIGN(mem_desc->esas2r_data, align); + mem_desc->phys_addr = ALIGN(mem_desc->phys_addr, align); + memset(mem_desc->virt_addr, 0, mem_desc->size); + return true; +} + +static void esas2r_initmem_free(struct esas2r_adapter *a, + struct esas2r_mem_desc *mem_desc) +{ + if (mem_desc->virt_addr == NULL) + return; + + /* + * Careful! phys_addr and virt_addr may have been adjusted from the + * original allocation in order to return the desired alignment. That + * means we have to use the original address (in esas2r_data) and size + * (esas2r_param) and calculate the original physical address based on + * the difference between the requested and actual allocation size. + */ + if (mem_desc->phys_addr) { + int unalign = ((u8 *)mem_desc->virt_addr) - + ((u8 *)mem_desc->esas2r_data); + + dma_free_coherent(&a->pcid->dev, + (size_t)mem_desc->esas2r_param, + mem_desc->esas2r_data, + (dma_addr_t)(mem_desc->phys_addr - unalign)); + } else { + kfree(mem_desc->esas2r_data); + } + + mem_desc->virt_addr = NULL; +} + +static bool alloc_vda_req(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_mem_desc *memdesc = kzalloc( + sizeof(struct esas2r_mem_desc), GFP_KERNEL); + + if (memdesc == NULL) { + esas2r_hdebug("could not alloc mem for vda request memdesc\n"); + return false; + } + + memdesc->size = sizeof(union atto_vda_req) + + ESAS2R_DATA_BUF_LEN; + + if (!esas2r_initmem_alloc(a, memdesc, 256)) { + esas2r_hdebug("could not alloc mem for vda request\n"); + kfree(memdesc); + return false; + } + + a->num_vrqs++; + list_add(&memdesc->next_desc, &a->vrq_mds_head); + + rq->vrq_md = memdesc; + rq->vrq = (union atto_vda_req *)memdesc->virt_addr; + rq->vrq->scsi.handle = a->num_vrqs; + + return true; +} + +static void esas2r_unmap_regions(struct esas2r_adapter *a) +{ + if (a->regs) + iounmap((void __iomem *)a->regs); + + a->regs = NULL; + + pci_release_region(a->pcid, 2); + + if (a->data_window) + iounmap((void __iomem *)a->data_window); + + a->data_window = NULL; + + pci_release_region(a->pcid, 0); +} + +static int esas2r_map_regions(struct esas2r_adapter *a) +{ + int error; + + a->regs = NULL; + a->data_window = NULL; + + error = pci_request_region(a->pcid, 2, a->name); + if (error != 0) { + esas2r_log(ESAS2R_LOG_CRIT, + "pci_request_region(2) failed, error %d", + error); + + return error; + } + + a->regs = (void __force *)ioremap(pci_resource_start(a->pcid, 2), + pci_resource_len(a->pcid, 2)); + if (a->regs == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "ioremap failed for regs mem region\n"); + pci_release_region(a->pcid, 2); + return -EFAULT; + } + + error = pci_request_region(a->pcid, 0, a->name); + if (error != 0) { + esas2r_log(ESAS2R_LOG_CRIT, + "pci_request_region(2) failed, error %d", + error); + esas2r_unmap_regions(a); + return error; + } + + a->data_window = (void __force *)ioremap(pci_resource_start(a->pcid, + 0), + pci_resource_len(a->pcid, 0)); + if (a->data_window == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "ioremap failed for data_window mem region\n"); + esas2r_unmap_regions(a); + return -EFAULT; + } + + return 0; +} + +static void esas2r_setup_interrupts(struct esas2r_adapter *a, int intr_mode) +{ + int i; + + /* Set up interrupt mode based on the requested value */ + switch (intr_mode) { + case INTR_MODE_LEGACY: +use_legacy_interrupts: + a->intr_mode = INTR_MODE_LEGACY; + break; + + case INTR_MODE_MSI: + i = pci_enable_msi(a->pcid); + if (i != 0) { + esas2r_log(ESAS2R_LOG_WARN, + "failed to enable MSI for adapter %d, " + "falling back to legacy interrupts " + "(err=%d)", a->index, + i); + goto use_legacy_interrupts; + } + a->intr_mode = INTR_MODE_MSI; + esas2r_lock_set_flags(&a->flags2, AF2_MSI_ENABLED); + break; + + + default: + esas2r_log(ESAS2R_LOG_WARN, + "unknown interrupt_mode %d requested, " + "falling back to legacy interrupt", + interrupt_mode); + goto use_legacy_interrupts; + } +} + +static void esas2r_claim_interrupts(struct esas2r_adapter *a) +{ + unsigned long flags = IRQF_DISABLED; + + if (a->intr_mode == INTR_MODE_LEGACY) + flags |= IRQF_SHARED; + + esas2r_log(ESAS2R_LOG_INFO, + "esas2r_claim_interrupts irq=%d (%p, %s, %x)", + a->pcid->irq, a, a->name, flags); + + if (request_irq(a->pcid->irq, + (a->intr_mode == + INTR_MODE_LEGACY) ? esas2r_interrupt : + esas2r_msi_interrupt, + flags, + a->name, + a)) { + esas2r_log(ESAS2R_LOG_CRIT, "unable to request IRQ %02X", + a->pcid->irq); + return; + } + + esas2r_lock_set_flags(&a->flags2, AF2_IRQ_CLAIMED); + esas2r_log(ESAS2R_LOG_INFO, + "claimed IRQ %d flags: 0x%lx", + a->pcid->irq, flags); +} + +int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid, + int index) +{ + struct esas2r_adapter *a; + u64 bus_addr = 0; + int i; + void *next_uncached; + struct esas2r_request *first_request, *last_request; + + if (index >= MAX_ADAPTERS) { + esas2r_log(ESAS2R_LOG_CRIT, + "tried to init invalid adapter index %u!", + index); + return 0; + } + + if (esas2r_adapters[index]) { + esas2r_log(ESAS2R_LOG_CRIT, + "tried to init existing adapter index %u!", + index); + return 0; + } + + a = (struct esas2r_adapter *)host->hostdata; + memset(a, 0, sizeof(struct esas2r_adapter)); + a->pcid = pcid; + a->host = host; + + if (sizeof(dma_addr_t) > 4) { + const uint64_t required_mask = dma_get_required_mask + (&pcid->dev); + if (required_mask > DMA_BIT_MASK(32) + && !pci_set_dma_mask(pcid, DMA_BIT_MASK(64)) + && !pci_set_consistent_dma_mask(pcid, + DMA_BIT_MASK(64))) { + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "64-bit PCI addressing enabled\n"); + } else if (!pci_set_dma_mask(pcid, DMA_BIT_MASK(32)) + && !pci_set_consistent_dma_mask(pcid, + DMA_BIT_MASK(32))) { + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "32-bit PCI addressing enabled\n"); + } else { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to set DMA mask"); + esas2r_kill_adapter(index); + return 0; + } + } else { + if (!pci_set_dma_mask(pcid, DMA_BIT_MASK(32)) + && !pci_set_consistent_dma_mask(pcid, + DMA_BIT_MASK(32))) { + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "32-bit PCI addressing enabled\n"); + } else { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to set DMA mask"); + esas2r_kill_adapter(index); + return 0; + } + } + esas2r_adapters[index] = a; + sprintf(a->name, ESAS2R_DRVR_NAME "_%02d", index); + esas2r_debug("new adapter %p, name %s", a, a->name); + spin_lock_init(&a->request_lock); + spin_lock_init(&a->fw_event_lock); + sema_init(&a->fm_api_semaphore, 1); + sema_init(&a->fs_api_semaphore, 1); + sema_init(&a->nvram_semaphore, 1); + + esas2r_fw_event_off(a); + snprintf(a->fw_event_q_name, ESAS2R_KOBJ_NAME_LEN, "esas2r/%d", + a->index); + a->fw_event_q = create_singlethread_workqueue(a->fw_event_q_name); + + init_waitqueue_head(&a->buffered_ioctl_waiter); + init_waitqueue_head(&a->nvram_waiter); + init_waitqueue_head(&a->fm_api_waiter); + init_waitqueue_head(&a->fs_api_waiter); + init_waitqueue_head(&a->vda_waiter); + + INIT_LIST_HEAD(&a->general_req.req_list); + INIT_LIST_HEAD(&a->active_list); + INIT_LIST_HEAD(&a->defer_list); + INIT_LIST_HEAD(&a->free_sg_list_head); + INIT_LIST_HEAD(&a->avail_request); + INIT_LIST_HEAD(&a->vrq_mds_head); + INIT_LIST_HEAD(&a->fw_event_list); + + first_request = (struct esas2r_request *)((u8 *)(a + 1)); + + for (last_request = first_request, i = 1; i < num_requests; + last_request++, i++) { + INIT_LIST_HEAD(&last_request->req_list); + list_add_tail(&last_request->comp_list, &a->avail_request); + if (!alloc_vda_req(a, last_request)) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to allocate a VDA request!"); + esas2r_kill_adapter(index); + return 0; + } + } + + esas2r_debug("requests: %p to %p (%d, %d)", first_request, + last_request, + sizeof(*first_request), + num_requests); + + if (esas2r_map_regions(a) != 0) { + esas2r_log(ESAS2R_LOG_CRIT, "could not map PCI regions!"); + esas2r_kill_adapter(index); + return 0; + } + + a->index = index; + + /* interrupts will be disabled until we are done with init */ + atomic_inc(&a->dis_ints_cnt); + atomic_inc(&a->disable_cnt); + a->flags |= AF_CHPRST_PENDING + | AF_DISC_PENDING + | AF_FIRST_INIT + | AF_LEGACY_SGE_MODE; + + a->init_msg = ESAS2R_INIT_MSG_START; + a->max_vdareq_size = 128; + a->build_sgl = esas2r_build_sg_list_sge; + + esas2r_setup_interrupts(a, interrupt_mode); + + a->uncached_size = esas2r_get_uncached_size(a); + a->uncached = dma_alloc_coherent(&pcid->dev, + (size_t)a->uncached_size, + (dma_addr_t *)&bus_addr, + GFP_KERNEL); + if (a->uncached == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to allocate %d bytes of consistent memory!", + a->uncached_size); + esas2r_kill_adapter(index); + return 0; + } + + a->uncached_phys = bus_addr; + + esas2r_debug("%d bytes uncached memory allocated @ %p (%x:%x)", + a->uncached_size, + a->uncached, + upper_32_bits(bus_addr), + lower_32_bits(bus_addr)); + memset(a->uncached, 0, a->uncached_size); + next_uncached = a->uncached; + + if (!esas2r_init_adapter_struct(a, + &next_uncached)) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to initialize adapter structure (2)!"); + esas2r_kill_adapter(index); + return 0; + } + + tasklet_init(&a->tasklet, + esas2r_adapter_tasklet, + (unsigned long)a); + + /* + * Disable chip interrupts to prevent spurious interrupts + * until we claim the IRQ. + */ + esas2r_disable_chip_interrupts(a); + esas2r_check_adapter(a); + + if (!esas2r_init_adapter_hw(a, true)) + esas2r_log(ESAS2R_LOG_CRIT, "failed to initialize hardware!"); + else + esas2r_debug("esas2r_init_adapter ok"); + + esas2r_claim_interrupts(a); + + if (a->flags2 & AF2_IRQ_CLAIMED) + esas2r_enable_chip_interrupts(a); + + esas2r_lock_set_flags(&a->flags2, AF2_INIT_DONE); + if (!(a->flags & AF_DEGRADED_MODE)) + esas2r_kickoff_timer(a); + esas2r_debug("esas2r_init_adapter done for %p (%d)", + a, a->disable_cnt); + + return 1; +} + +static void esas2r_adapter_power_down(struct esas2r_adapter *a, + int power_management) +{ + struct esas2r_mem_desc *memdesc, *next; + + if ((a->flags2 & AF2_INIT_DONE) + && (!(a->flags & AF_DEGRADED_MODE))) { + if (!power_management) { + del_timer_sync(&a->timer); + tasklet_kill(&a->tasklet); + } + esas2r_power_down(a); + + /* + * There are versions of firmware that do not handle the sync + * cache command correctly. Stall here to ensure that the + * cache is lazily flushed. + */ + mdelay(500); + esas2r_debug("chip halted"); + } + + /* Remove sysfs binary files */ + if (a->sysfs_fw_created) { + sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_fw); + a->sysfs_fw_created = 0; + } + + if (a->sysfs_fs_created) { + sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_fs); + a->sysfs_fs_created = 0; + } + + if (a->sysfs_vda_created) { + sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_vda); + a->sysfs_vda_created = 0; + } + + if (a->sysfs_hw_created) { + sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_hw); + a->sysfs_hw_created = 0; + } + + if (a->sysfs_live_nvram_created) { + sysfs_remove_bin_file(&a->host->shost_dev.kobj, + &bin_attr_live_nvram); + a->sysfs_live_nvram_created = 0; + } + + if (a->sysfs_default_nvram_created) { + sysfs_remove_bin_file(&a->host->shost_dev.kobj, + &bin_attr_default_nvram); + a->sysfs_default_nvram_created = 0; + } + + /* Clean up interrupts */ + if (a->flags2 & AF2_IRQ_CLAIMED) { + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "free_irq(%d) called", a->pcid->irq); + + free_irq(a->pcid->irq, a); + esas2r_debug("IRQ released"); + esas2r_lock_clear_flags(&a->flags2, AF2_IRQ_CLAIMED); + } + + if (a->flags2 & AF2_MSI_ENABLED) { + pci_disable_msi(a->pcid); + esas2r_lock_clear_flags(&a->flags2, AF2_MSI_ENABLED); + esas2r_debug("MSI disabled"); + } + + if (a->inbound_list_md.virt_addr) + esas2r_initmem_free(a, &a->inbound_list_md); + + if (a->outbound_list_md.virt_addr) + esas2r_initmem_free(a, &a->outbound_list_md); + + list_for_each_entry_safe(memdesc, next, &a->free_sg_list_head, + next_desc) { + esas2r_initmem_free(a, memdesc); + } + + /* Following frees everything allocated via alloc_vda_req */ + list_for_each_entry_safe(memdesc, next, &a->vrq_mds_head, next_desc) { + esas2r_initmem_free(a, memdesc); + list_del(&memdesc->next_desc); + kfree(memdesc); + } + + kfree(a->first_ae_req); + a->first_ae_req = NULL; + + kfree(a->sg_list_mds); + a->sg_list_mds = NULL; + + kfree(a->req_table); + a->req_table = NULL; + + if (a->regs) { + esas2r_unmap_regions(a); + a->regs = NULL; + a->data_window = NULL; + esas2r_debug("regions unmapped"); + } +} + +/* Release/free allocated resources for specified adapters. */ +void esas2r_kill_adapter(int i) +{ + struct esas2r_adapter *a = esas2r_adapters[i]; + + if (a) { + unsigned long flags; + struct workqueue_struct *wq; + esas2r_debug("killing adapter %p [%d] ", a, i); + esas2r_fw_event_off(a); + esas2r_adapter_power_down(a, 0); + if (esas2r_buffered_ioctl && + (a->pcid == esas2r_buffered_ioctl_pcid)) { + dma_free_coherent(&a->pcid->dev, + (size_t)esas2r_buffered_ioctl_size, + esas2r_buffered_ioctl, + esas2r_buffered_ioctl_addr); + esas2r_buffered_ioctl = NULL; + } + + if (a->vda_buffer) { + dma_free_coherent(&a->pcid->dev, + (size_t)VDA_MAX_BUFFER_SIZE, + a->vda_buffer, + (dma_addr_t)a->ppvda_buffer); + a->vda_buffer = NULL; + } + if (a->fs_api_buffer) { + dma_free_coherent(&a->pcid->dev, + (size_t)a->fs_api_buffer_size, + a->fs_api_buffer, + (dma_addr_t)a->ppfs_api_buffer); + a->fs_api_buffer = NULL; + } + + kfree(a->local_atto_ioctl); + a->local_atto_ioctl = NULL; + + spin_lock_irqsave(&a->fw_event_lock, flags); + wq = a->fw_event_q; + a->fw_event_q = NULL; + spin_unlock_irqrestore(&a->fw_event_lock, flags); + if (wq) + destroy_workqueue(wq); + + if (a->uncached) { + dma_free_coherent(&a->pcid->dev, + (size_t)a->uncached_size, + a->uncached, + (dma_addr_t)a->uncached_phys); + a->uncached = NULL; + esas2r_debug("uncached area freed"); + } + + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "pci_disable_device() called. msix_enabled: %d " + "msi_enabled: %d irq: %d pin: %d", + a->pcid->msix_enabled, + a->pcid->msi_enabled, + a->pcid->irq, + a->pcid->pin); + + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "before pci_disable_device() enable_cnt: %d", + a->pcid->enable_cnt.counter); + + pci_disable_device(a->pcid); + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "after pci_disable_device() enable_cnt: %d", + a->pcid->enable_cnt.counter); + + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->pcid->dev), + "pci_set_drv_data(%p, NULL) called", + a->pcid); + + pci_set_drvdata(a->pcid, NULL); + esas2r_adapters[i] = NULL; + + if (a->flags2 & AF2_INIT_DONE) { + esas2r_lock_clear_flags(&a->flags2, + AF2_INIT_DONE); + + esas2r_lock_set_flags(&a->flags, + AF_DEGRADED_MODE); + + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->host->shost_gendev), + "scsi_remove_host() called"); + + scsi_remove_host(a->host); + + esas2r_log_dev(ESAS2R_LOG_INFO, + &(a->host->shost_gendev), + "scsi_host_put() called"); + + scsi_host_put(a->host); + } + } +} + +int esas2r_cleanup(struct Scsi_Host *host) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; + int index; + + if (host == NULL) { + int i; + + esas2r_debug("esas2r_cleanup everything"); + for (i = 0; i < MAX_ADAPTERS; i++) + esas2r_kill_adapter(i); + return -1; + } + + esas2r_debug("esas2r_cleanup called for host %p", host); + index = a->index; + esas2r_kill_adapter(index); + return index; +} + +int esas2r_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct Scsi_Host *host = pci_get_drvdata(pdev); + u32 device_state; + struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; + + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), "suspending adapter()"); + if (!a) + return -ENODEV; + + esas2r_adapter_power_down(a, 1); + device_state = pci_choose_state(pdev, state); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_save_state() called"); + pci_save_state(pdev); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_disable_device() called"); + pci_disable_device(pdev); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_set_power_state() called"); + pci_set_power_state(pdev, device_state); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), "esas2r_suspend(): 0"); + return 0; +} + +int esas2r_resume(struct pci_dev *pdev) +{ + struct Scsi_Host *host = pci_get_drvdata(pdev); + struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; + int rez; + + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), "resuming adapter()"); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_set_power_state(PCI_D0) " + "called"); + pci_set_power_state(pdev, PCI_D0); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_enable_wake(PCI_D0, 0) " + "called"); + pci_enable_wake(pdev, PCI_D0, 0); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_restore_state() called"); + pci_restore_state(pdev); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "pci_enable_device() called"); + rez = pci_enable_device(pdev); + pci_set_master(pdev); + + if (!a) { + rez = -ENODEV; + goto error_exit; + } + + if (esas2r_map_regions(a) != 0) { + esas2r_log(ESAS2R_LOG_CRIT, "could not re-map PCI regions!"); + rez = -ENOMEM; + goto error_exit; + } + + /* Set up interupt mode */ + esas2r_setup_interrupts(a, a->intr_mode); + + /* + * Disable chip interrupts to prevent spurious interrupts until we + * claim the IRQ. + */ + esas2r_disable_chip_interrupts(a); + if (!esas2r_power_up(a, true)) { + esas2r_debug("yikes, esas2r_power_up failed"); + rez = -ENOMEM; + goto error_exit; + } + + esas2r_claim_interrupts(a); + + if (a->flags2 & AF2_IRQ_CLAIMED) { + /* + * Now that system interrupt(s) are claimed, we can enable + * chip interrupts. + */ + esas2r_enable_chip_interrupts(a); + esas2r_kickoff_timer(a); + } else { + esas2r_debug("yikes, unable to claim IRQ"); + esas2r_log(ESAS2R_LOG_CRIT, "could not re-claim IRQ!"); + rez = -ENOMEM; + goto error_exit; + } + +error_exit: + esas2r_log_dev(ESAS2R_LOG_CRIT, &(pdev->dev), "esas2r_resume(): %d", + rez); + return rez; +} + +bool esas2r_set_degraded_mode(struct esas2r_adapter *a, char *error_str) +{ + esas2r_lock_set_flags(&a->flags, AF_DEGRADED_MODE); + esas2r_log(ESAS2R_LOG_CRIT, + "setting adapter to degraded mode: %s\n", error_str); + return false; +} + +u32 esas2r_get_uncached_size(struct esas2r_adapter *a) +{ + return sizeof(struct esas2r_sas_nvram) + + ALIGN(ESAS2R_DISC_BUF_LEN, 8) + + ALIGN(sizeof(u32), 8) /* outbound list copy pointer */ + + 8 + + (num_sg_lists * (u16)sgl_page_size) + + ALIGN((num_requests + num_ae_requests + 1 + + ESAS2R_LIST_EXTRA) * + sizeof(struct esas2r_inbound_list_source_entry), + 8) + + ALIGN((num_requests + num_ae_requests + 1 + + ESAS2R_LIST_EXTRA) * + sizeof(struct atto_vda_ob_rsp), 8) + + 256; /* VDA request and buffer align */ +} + +static void esas2r_init_pci_cfg_space(struct esas2r_adapter *a) +{ + int pcie_cap_reg; + + pcie_cap_reg = pci_find_capability(a->pcid, PCI_CAP_ID_EXP); + if (0xffff && pcie_cap_reg) { + u16 devcontrol; + + pci_read_config_word(a->pcid, pcie_cap_reg + PCI_EXP_DEVCTL, + &devcontrol); + + if ((devcontrol & PCI_EXP_DEVCTL_READRQ) > 0x2000) { + esas2r_log(ESAS2R_LOG_INFO, + "max read request size > 512B"); + + devcontrol &= ~PCI_EXP_DEVCTL_READRQ; + devcontrol |= 0x2000; + pci_write_config_word(a->pcid, + pcie_cap_reg + PCI_EXP_DEVCTL, + devcontrol); + } + } +} + +/* + * Determine the organization of the uncached data area and + * finish initializing the adapter structure + */ +bool esas2r_init_adapter_struct(struct esas2r_adapter *a, + void **uncached_area) +{ + u32 i; + u8 *high; + struct esas2r_inbound_list_source_entry *element; + struct esas2r_request *rq; + struct esas2r_mem_desc *sgl; + + spin_lock_init(&a->sg_list_lock); + spin_lock_init(&a->mem_lock); + spin_lock_init(&a->queue_lock); + + a->targetdb_end = &a->targetdb[ESAS2R_MAX_TARGETS]; + + if (!alloc_vda_req(a, &a->general_req)) { + esas2r_hdebug( + "failed to allocate a VDA request for the general req!"); + return false; + } + + /* allocate requests for asynchronous events */ + a->first_ae_req = + kzalloc(num_ae_requests * sizeof(struct esas2r_request), + GFP_KERNEL); + + if (a->first_ae_req == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to allocate memory for asynchronous events"); + return false; + } + + /* allocate the S/G list memory descriptors */ + a->sg_list_mds = kzalloc( + num_sg_lists * sizeof(struct esas2r_mem_desc), GFP_KERNEL); + + if (a->sg_list_mds == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to allocate memory for s/g list descriptors"); + return false; + } + + /* allocate the request table */ + a->req_table = + kzalloc((num_requests + num_ae_requests + + 1) * sizeof(struct esas2r_request *), GFP_KERNEL); + + if (a->req_table == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "failed to allocate memory for the request table"); + return false; + } + + /* initialize PCI configuration space */ + esas2r_init_pci_cfg_space(a); + + /* + * the thunder_stream boards all have a serial flash part that has a + * different base address on the AHB bus. + */ + if ((a->pcid->subsystem_vendor == ATTO_VENDOR_ID) + && (a->pcid->subsystem_device & ATTO_SSDID_TBT)) + a->flags2 |= AF2_THUNDERBOLT; + + if (a->flags2 & AF2_THUNDERBOLT) + a->flags2 |= AF2_SERIAL_FLASH; + + if (a->pcid->subsystem_device == ATTO_TLSH_1068) + a->flags2 |= AF2_THUNDERLINK; + + /* Uncached Area */ + high = (u8 *)*uncached_area; + + /* initialize the scatter/gather table pages */ + + for (i = 0, sgl = a->sg_list_mds; i < num_sg_lists; i++, sgl++) { + sgl->size = sgl_page_size; + + list_add_tail(&sgl->next_desc, &a->free_sg_list_head); + + if (!esas2r_initmem_alloc(a, sgl, ESAS2R_SGL_ALIGN)) { + /* Allow the driver to load if the minimum count met. */ + if (i < NUM_SGL_MIN) + return false; + break; + } + } + + /* compute the size of the lists */ + a->list_size = num_requests + ESAS2R_LIST_EXTRA; + + /* allocate the inbound list */ + a->inbound_list_md.size = a->list_size * + sizeof(struct + esas2r_inbound_list_source_entry); + + if (!esas2r_initmem_alloc(a, &a->inbound_list_md, ESAS2R_LIST_ALIGN)) { + esas2r_hdebug("failed to allocate IB list"); + return false; + } + + /* allocate the outbound list */ + a->outbound_list_md.size = a->list_size * + sizeof(struct atto_vda_ob_rsp); + + if (!esas2r_initmem_alloc(a, &a->outbound_list_md, + ESAS2R_LIST_ALIGN)) { + esas2r_hdebug("failed to allocate IB list"); + return false; + } + + /* allocate the NVRAM structure */ + a->nvram = (struct esas2r_sas_nvram *)high; + high += sizeof(struct esas2r_sas_nvram); + + /* allocate the discovery buffer */ + a->disc_buffer = high; + high += ESAS2R_DISC_BUF_LEN; + high = PTR_ALIGN(high, 8); + + /* allocate the outbound list copy pointer */ + a->outbound_copy = (u32 volatile *)high; + high += sizeof(u32); + + if (!(a->flags & AF_NVR_VALID)) + esas2r_nvram_set_defaults(a); + + /* update the caller's uncached memory area pointer */ + *uncached_area = (void *)high; + + /* initialize the allocated memory */ + if (a->flags & AF_FIRST_INIT) { + memset(a->req_table, 0, + (num_requests + num_ae_requests + + 1) * sizeof(struct esas2r_request *)); + + esas2r_targ_db_initialize(a); + + /* prime parts of the inbound list */ + element = + (struct esas2r_inbound_list_source_entry *)a-> + inbound_list_md. + virt_addr; + + for (i = 0; i < a->list_size; i++) { + element->address = 0; + element->reserved = 0; + element->length = cpu_to_le32(HWILSE_INTERFACE_F0 + | (sizeof(union + atto_vda_req) + / + sizeof(u32))); + element++; + } + + /* init the AE requests */ + for (rq = a->first_ae_req, i = 0; i < num_ae_requests; rq++, + i++) { + INIT_LIST_HEAD(&rq->req_list); + if (!alloc_vda_req(a, rq)) { + esas2r_hdebug( + "failed to allocate a VDA request!"); + return false; + } + + esas2r_rq_init_request(rq, a); + + /* override the completion function */ + rq->comp_cb = esas2r_ae_complete; + } + } + + return true; +} + +/* This code will verify that the chip is operational. */ +bool esas2r_check_adapter(struct esas2r_adapter *a) +{ + u32 starttime; + u32 doorbell; + u64 ppaddr; + u32 dw; + + /* + * if the chip reset detected flag is set, we can bypass a bunch of + * stuff. + */ + if (a->flags & AF_CHPRST_DETECTED) + goto skip_chip_reset; + + /* + * BEFORE WE DO ANYTHING, disable the chip interrupts! the boot driver + * may have left them enabled or we may be recovering from a fault. + */ + esas2r_write_register_dword(a, MU_INT_MASK_OUT, ESAS2R_INT_DIS_MASK); + esas2r_flush_register_dword(a, MU_INT_MASK_OUT); + + /* + * wait for the firmware to become ready by forcing an interrupt and + * waiting for a response. + */ + starttime = jiffies_to_msecs(jiffies); + + while (true) { + esas2r_force_interrupt(a); + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell == 0xFFFFFFFF) { + /* + * Give the firmware up to two seconds to enable + * register access after a reset. + */ + if ((jiffies_to_msecs(jiffies) - starttime) > 2000) + return esas2r_set_degraded_mode(a, + "unable to access registers"); + } else if (doorbell & DRBL_FORCE_INT) { + u32 ver = (doorbell & DRBL_FW_VER_MSK); + + /* + * This driver supports version 0 and version 1 of + * the API + */ + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + + if (ver == DRBL_FW_VER_0) { + esas2r_lock_set_flags(&a->flags, + AF_LEGACY_SGE_MODE); + + a->max_vdareq_size = 128; + a->build_sgl = esas2r_build_sg_list_sge; + } else if (ver == DRBL_FW_VER_1) { + esas2r_lock_clear_flags(&a->flags, + AF_LEGACY_SGE_MODE); + + a->max_vdareq_size = 1024; + a->build_sgl = esas2r_build_sg_list_prd; + } else { + return esas2r_set_degraded_mode(a, + "unknown firmware version"); + } + break; + } + + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + if ((jiffies_to_msecs(jiffies) - starttime) > 180000) { + esas2r_hdebug("FW ready TMO"); + esas2r_bugon(); + + return esas2r_set_degraded_mode(a, + "firmware start has timed out"); + } + } + + /* purge any asynchronous events since we will repost them later */ + esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_MSG_IFC_DOWN); + starttime = jiffies_to_msecs(jiffies); + + while (true) { + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell & DRBL_MSG_IFC_DOWN) { + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + break; + } + + schedule_timeout_interruptible(msecs_to_jiffies(50)); + + if ((jiffies_to_msecs(jiffies) - starttime) > 3000) { + esas2r_hdebug("timeout waiting for interface down"); + break; + } + } +skip_chip_reset: + /* + * first things first, before we go changing any of these registers + * disable the communication lists. + */ + dw = esas2r_read_register_dword(a, MU_IN_LIST_CONFIG); + dw &= ~MU_ILC_ENABLE; + esas2r_write_register_dword(a, MU_IN_LIST_CONFIG, dw); + dw = esas2r_read_register_dword(a, MU_OUT_LIST_CONFIG); + dw &= ~MU_OLC_ENABLE; + esas2r_write_register_dword(a, MU_OUT_LIST_CONFIG, dw); + + /* configure the communication list addresses */ + ppaddr = a->inbound_list_md.phys_addr; + esas2r_write_register_dword(a, MU_IN_LIST_ADDR_LO, + lower_32_bits(ppaddr)); + esas2r_write_register_dword(a, MU_IN_LIST_ADDR_HI, + upper_32_bits(ppaddr)); + ppaddr = a->outbound_list_md.phys_addr; + esas2r_write_register_dword(a, MU_OUT_LIST_ADDR_LO, + lower_32_bits(ppaddr)); + esas2r_write_register_dword(a, MU_OUT_LIST_ADDR_HI, + upper_32_bits(ppaddr)); + ppaddr = a->uncached_phys + + ((u8 *)a->outbound_copy - a->uncached); + esas2r_write_register_dword(a, MU_OUT_LIST_COPY_PTR_LO, + lower_32_bits(ppaddr)); + esas2r_write_register_dword(a, MU_OUT_LIST_COPY_PTR_HI, + upper_32_bits(ppaddr)); + + /* reset the read and write pointers */ + *a->outbound_copy = + a->last_write = + a->last_read = a->list_size - 1; + esas2r_lock_set_flags(&a->flags, AF_COMM_LIST_TOGGLE); + esas2r_write_register_dword(a, MU_IN_LIST_WRITE, MU_ILW_TOGGLE | + a->last_write); + esas2r_write_register_dword(a, MU_OUT_LIST_COPY, MU_OLC_TOGGLE | + a->last_write); + esas2r_write_register_dword(a, MU_IN_LIST_READ, MU_ILR_TOGGLE | + a->last_write); + esas2r_write_register_dword(a, MU_OUT_LIST_WRITE, + MU_OLW_TOGGLE | a->last_write); + + /* configure the interface select fields */ + dw = esas2r_read_register_dword(a, MU_IN_LIST_IFC_CONFIG); + dw &= ~(MU_ILIC_LIST | MU_ILIC_DEST); + esas2r_write_register_dword(a, MU_IN_LIST_IFC_CONFIG, + (dw | MU_ILIC_LIST_F0 | MU_ILIC_DEST_DDR)); + dw = esas2r_read_register_dword(a, MU_OUT_LIST_IFC_CONFIG); + dw &= ~(MU_OLIC_LIST | MU_OLIC_SOURCE); + esas2r_write_register_dword(a, MU_OUT_LIST_IFC_CONFIG, + (dw | MU_OLIC_LIST_F0 | + MU_OLIC_SOURCE_DDR)); + + /* finish configuring the communication lists */ + dw = esas2r_read_register_dword(a, MU_IN_LIST_CONFIG); + dw &= ~(MU_ILC_ENTRY_MASK | MU_ILC_NUMBER_MASK); + dw |= MU_ILC_ENTRY_4_DW | MU_ILC_DYNAMIC_SRC + | (a->list_size << MU_ILC_NUMBER_SHIFT); + esas2r_write_register_dword(a, MU_IN_LIST_CONFIG, dw); + dw = esas2r_read_register_dword(a, MU_OUT_LIST_CONFIG); + dw &= ~(MU_OLC_ENTRY_MASK | MU_OLC_NUMBER_MASK); + dw |= MU_OLC_ENTRY_4_DW | (a->list_size << MU_OLC_NUMBER_SHIFT); + esas2r_write_register_dword(a, MU_OUT_LIST_CONFIG, dw); + + /* + * notify the firmware that we're done setting up the communication + * list registers. wait here until the firmware is done configuring + * its lists. it will signal that it is done by enabling the lists. + */ + esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_MSG_IFC_INIT); + starttime = jiffies_to_msecs(jiffies); + + while (true) { + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell & DRBL_MSG_IFC_INIT) { + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + break; + } + + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + if ((jiffies_to_msecs(jiffies) - starttime) > 3000) { + esas2r_hdebug( + "timeout waiting for communication list init"); + esas2r_bugon(); + return esas2r_set_degraded_mode(a, + "timeout waiting for communication list init"); + } + } + + /* + * flag whether the firmware supports the power down doorbell. we + * determine this by reading the inbound doorbell enable mask. + */ + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_IN_ENB); + if (doorbell & DRBL_POWER_DOWN) + esas2r_lock_set_flags(&a->flags2, AF2_VDA_POWER_DOWN); + else + esas2r_lock_clear_flags(&a->flags2, AF2_VDA_POWER_DOWN); + + /* + * enable assertion of outbound queue and doorbell interrupts in the + * main interrupt cause register. + */ + esas2r_write_register_dword(a, MU_OUT_LIST_INT_MASK, MU_OLIS_MASK); + esas2r_write_register_dword(a, MU_DOORBELL_OUT_ENB, DRBL_ENB_MASK); + return true; +} + +/* Process the initialization message just completed and format the next one. */ +static bool esas2r_format_init_msg(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + u32 msg = a->init_msg; + struct atto_vda_cfg_init *ci; + + a->init_msg = 0; + + switch (msg) { + case ESAS2R_INIT_MSG_START: + case ESAS2R_INIT_MSG_REINIT: + { + struct timeval now; + do_gettimeofday(&now); + esas2r_hdebug("CFG init"); + esas2r_build_cfg_req(a, + rq, + VDA_CFG_INIT, + 0, + NULL); + ci = (struct atto_vda_cfg_init *)&rq->vrq->cfg.data.init; + ci->sgl_page_size = sgl_page_size; + ci->epoch_time = now.tv_sec; + rq->flags |= RF_FAILURE_OK; + a->init_msg = ESAS2R_INIT_MSG_INIT; + break; + } + + case ESAS2R_INIT_MSG_INIT: + if (rq->req_stat == RS_SUCCESS) { + u32 major; + u32 minor; + + a->fw_version = le16_to_cpu( + rq->func_rsp.cfg_rsp.vda_version); + a->fw_build = rq->func_rsp.cfg_rsp.fw_build; + major = LOBYTE(rq->func_rsp.cfg_rsp.fw_release); + minor = HIBYTE(rq->func_rsp.cfg_rsp.fw_release); + a->fw_version += (major << 16) + (minor << 24); + } else { + esas2r_hdebug("FAILED"); + } + + /* + * the 2.71 and earlier releases of R6xx firmware did not error + * unsupported config requests correctly. + */ + + if ((a->flags2 & AF2_THUNDERBOLT) + || (be32_to_cpu(a->fw_version) > + be32_to_cpu(0x47020052))) { + esas2r_hdebug("CFG get init"); + esas2r_build_cfg_req(a, + rq, + VDA_CFG_GET_INIT2, + sizeof(struct atto_vda_cfg_init), + NULL); + + rq->vrq->cfg.sg_list_offset = offsetof( + struct atto_vda_cfg_req, + data.sge); + rq->vrq->cfg.data.prde.ctl_len = + cpu_to_le32(sizeof(struct atto_vda_cfg_init)); + rq->vrq->cfg.data.prde.address = cpu_to_le64( + rq->vrq_md->phys_addr + + sizeof(union atto_vda_req)); + rq->flags |= RF_FAILURE_OK; + a->init_msg = ESAS2R_INIT_MSG_GET_INIT; + break; + } + + case ESAS2R_INIT_MSG_GET_INIT: + if (msg == ESAS2R_INIT_MSG_GET_INIT) { + ci = (struct atto_vda_cfg_init *)rq->data_buf; + if (rq->req_stat == RS_SUCCESS) { + a->num_targets_backend = + le32_to_cpu(ci->num_targets_backend); + a->ioctl_tunnel = + le32_to_cpu(ci->ioctl_tunnel); + } else { + esas2r_hdebug("FAILED"); + } + } + /* fall through */ + + default: + rq->req_stat = RS_SUCCESS; + return false; + } + return true; +} + +/* + * Perform initialization messages via the request queue. Messages are + * performed with interrupts disabled. + */ +bool esas2r_init_msgs(struct esas2r_adapter *a) +{ + bool success = true; + struct esas2r_request *rq = &a->general_req; + + esas2r_rq_init_request(rq, a); + rq->comp_cb = esas2r_dummy_complete; + + if (a->init_msg == 0) + a->init_msg = ESAS2R_INIT_MSG_REINIT; + + while (a->init_msg) { + if (esas2r_format_init_msg(a, rq)) { + unsigned long flags; + while (true) { + spin_lock_irqsave(&a->queue_lock, flags); + esas2r_start_vda_request(a, rq); + spin_unlock_irqrestore(&a->queue_lock, flags); + esas2r_wait_request(a, rq); + if (rq->req_stat != RS_PENDING) + break; + } + } + + if (rq->req_stat == RS_SUCCESS + || ((rq->flags & RF_FAILURE_OK) + && rq->req_stat != RS_TIMEOUT)) + continue; + + esas2r_log(ESAS2R_LOG_CRIT, "init message %x failed (%x, %x)", + a->init_msg, rq->req_stat, rq->flags); + a->init_msg = ESAS2R_INIT_MSG_START; + success = false; + break; + } + + esas2r_rq_destroy_request(rq, a); + return success; +} + +/* Initialize the adapter chip */ +bool esas2r_init_adapter_hw(struct esas2r_adapter *a, bool init_poll) +{ + bool rslt = false; + struct esas2r_request *rq; + u32 i; + + if (a->flags & AF_DEGRADED_MODE) + goto exit; + + if (!(a->flags & AF_NVR_VALID)) { + if (!esas2r_nvram_read_direct(a)) + esas2r_log(ESAS2R_LOG_WARN, + "invalid/missing NVRAM parameters"); + } + + if (!esas2r_init_msgs(a)) { + esas2r_set_degraded_mode(a, "init messages failed"); + goto exit; + } + + /* The firmware is ready. */ + esas2r_lock_clear_flags(&a->flags, AF_DEGRADED_MODE); + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_PENDING); + + /* Post all the async event requests */ + for (i = 0, rq = a->first_ae_req; i < num_ae_requests; i++, rq++) + esas2r_start_ae_request(a, rq); + + if (!a->flash_rev[0]) + esas2r_read_flash_rev(a); + + if (!a->image_type[0]) + esas2r_read_image_type(a); + + if (a->fw_version == 0) + a->fw_rev[0] = 0; + else + sprintf(a->fw_rev, "%1d.%02d", + (int)LOBYTE(HIWORD(a->fw_version)), + (int)HIBYTE(HIWORD(a->fw_version))); + + esas2r_hdebug("firmware revision: %s", a->fw_rev); + + if ((a->flags & AF_CHPRST_DETECTED) + && (a->flags & AF_FIRST_INIT)) { + esas2r_enable_chip_interrupts(a); + return true; + } + + /* initialize discovery */ + esas2r_disc_initialize(a); + + /* + * wait for the device wait time to expire here if requested. this is + * usually requested during initial driver load and possibly when + * resuming from a low power state. deferred device waiting will use + * interrupts. chip reset recovery always defers device waiting to + * avoid being in a TASKLET too long. + */ + if (init_poll) { + u32 currtime = a->disc_start_time; + u32 nexttick = 100; + u32 deltatime; + + /* + * Block Tasklets from getting scheduled and indicate this is + * polled discovery. + */ + esas2r_lock_set_flags(&a->flags, AF_TASKLET_SCHEDULED); + esas2r_lock_set_flags(&a->flags, AF_DISC_POLLED); + + /* + * Temporarily bring the disable count to zero to enable + * deferred processing. Note that the count is already zero + * after the first initialization. + */ + if (a->flags & AF_FIRST_INIT) + atomic_dec(&a->disable_cnt); + + while (a->flags & AF_DISC_PENDING) { + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + /* + * Determine the need for a timer tick based on the + * delta time between this and the last iteration of + * this loop. We don't use the absolute time because + * then we would have to worry about when nexttick + * wraps and currtime hasn't yet. + */ + deltatime = jiffies_to_msecs(jiffies) - currtime; + currtime += deltatime; + + /* + * Process any waiting discovery as long as the chip is + * up. If a chip reset happens during initial polling, + * we have to make sure the timer tick processes the + * doorbell indicating the firmware is ready. + */ + if (!(a->flags & AF_CHPRST_PENDING)) + esas2r_disc_check_for_work(a); + + /* Simulate a timer tick. */ + if (nexttick <= deltatime) { + + /* Time for a timer tick */ + nexttick += 100; + esas2r_timer_tick(a); + } + + if (nexttick > deltatime) + nexttick -= deltatime; + + /* Do any deferred processing */ + if (esas2r_is_tasklet_pending(a)) + esas2r_do_tasklet_tasks(a); + + } + + if (a->flags & AF_FIRST_INIT) + atomic_inc(&a->disable_cnt); + + esas2r_lock_clear_flags(&a->flags, AF_DISC_POLLED); + esas2r_lock_clear_flags(&a->flags, AF_TASKLET_SCHEDULED); + } + + + esas2r_targ_db_report_changes(a); + + /* + * For cases where (a) the initialization messages processing may + * handle an interrupt for a port event and a discovery is waiting, but + * we are not waiting for devices, or (b) the device wait time has been + * exhausted but there is still discovery pending, start any leftover + * discovery in interrupt driven mode. + */ + esas2r_disc_start_waiting(a); + + /* Enable chip interrupts */ + a->int_mask = ESAS2R_INT_STS_MASK; + esas2r_enable_chip_interrupts(a); + esas2r_enable_heartbeat(a); + rslt = true; + +exit: + /* + * Regardless of whether initialization was successful, certain things + * need to get done before we exit. + */ + + if ((a->flags & AF_CHPRST_DETECTED) + && (a->flags & AF_FIRST_INIT)) { + /* + * Reinitialization was performed during the first + * initialization. Only clear the chip reset flag so the + * original device polling is not cancelled. + */ + if (!rslt) + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_PENDING); + } else { + /* First initialization or a subsequent re-init is complete. */ + if (!rslt) { + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_PENDING); + esas2r_lock_clear_flags(&a->flags, AF_DISC_PENDING); + } + + + /* Enable deferred processing after the first initialization. */ + if (a->flags & AF_FIRST_INIT) { + esas2r_lock_clear_flags(&a->flags, AF_FIRST_INIT); + + if (atomic_dec_return(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); + } + } + + return rslt; +} + +void esas2r_reset_adapter(struct esas2r_adapter *a) +{ + esas2r_lock_set_flags(&a->flags, AF_OS_RESET); + esas2r_local_reset_adapter(a); + esas2r_schedule_tasklet(a); +} + +void esas2r_reset_chip(struct esas2r_adapter *a) +{ + if (!esas2r_is_adapter_present(a)) + return; + + /* + * Before we reset the chip, save off the VDA core dump. The VDA core + * dump is located in the upper 512KB of the onchip SRAM. Make sure + * to not overwrite a previous crash that was saved. + */ + if ((a->flags2 & AF2_COREDUMP_AVAIL) + && !(a->flags2 & AF2_COREDUMP_SAVED) + && a->fw_coredump_buff) { + esas2r_read_mem_block(a, + a->fw_coredump_buff, + MW_DATA_ADDR_SRAM + 0x80000, + ESAS2R_FWCOREDUMP_SZ); + + esas2r_lock_set_flags(&a->flags2, AF2_COREDUMP_SAVED); + } + + esas2r_lock_clear_flags(&a->flags2, AF2_COREDUMP_AVAIL); + + /* Reset the chip */ + if (a->pcid->revision == MVR_FREY_B2) + esas2r_write_register_dword(a, MU_CTL_STATUS_IN_B2, + MU_CTL_IN_FULL_RST2); + else + esas2r_write_register_dword(a, MU_CTL_STATUS_IN, + MU_CTL_IN_FULL_RST); + + + /* Stall a little while to let the reset condition clear */ + mdelay(10); +} + +static void esas2r_power_down_notify_firmware(struct esas2r_adapter *a) +{ + u32 starttime; + u32 doorbell; + + esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_POWER_DOWN); + starttime = jiffies_to_msecs(jiffies); + + while (true) { + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell & DRBL_POWER_DOWN) { + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + break; + } + + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + if ((jiffies_to_msecs(jiffies) - starttime) > 30000) { + esas2r_hdebug("Timeout waiting for power down"); + break; + } + } +} + +/* + * Perform power management processing including managing device states, adapter + * states, interrupts, and I/O. + */ +void esas2r_power_down(struct esas2r_adapter *a) +{ + esas2r_lock_set_flags(&a->flags, AF_POWER_MGT); + esas2r_lock_set_flags(&a->flags, AF_POWER_DOWN); + + if (!(a->flags & AF_DEGRADED_MODE)) { + u32 starttime; + u32 doorbell; + + /* + * We are currently running OK and will be reinitializing later. + * increment the disable count to coordinate with + * esas2r_init_adapter. We don't have to do this in degraded + * mode since we never enabled interrupts in the first place. + */ + esas2r_disable_chip_interrupts(a); + esas2r_disable_heartbeat(a); + + /* wait for any VDA activity to clear before continuing */ + esas2r_write_register_dword(a, MU_DOORBELL_IN, + DRBL_MSG_IFC_DOWN); + starttime = jiffies_to_msecs(jiffies); + + while (true) { + doorbell = + esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell & DRBL_MSG_IFC_DOWN) { + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + break; + } + + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + if ((jiffies_to_msecs(jiffies) - starttime) > 3000) { + esas2r_hdebug( + "timeout waiting for interface down"); + break; + } + } + + /* + * For versions of firmware that support it tell them the driver + * is powering down. + */ + if (a->flags2 & AF2_VDA_POWER_DOWN) + esas2r_power_down_notify_firmware(a); + } + + /* Suspend I/O processing. */ + esas2r_lock_set_flags(&a->flags, AF_OS_RESET); + esas2r_lock_set_flags(&a->flags, AF_DISC_PENDING); + esas2r_lock_set_flags(&a->flags, AF_CHPRST_PENDING); + + esas2r_process_adapter_reset(a); + + /* Remove devices now that I/O is cleaned up. */ + a->prev_dev_cnt = esas2r_targ_db_get_tgt_cnt(a); + esas2r_targ_db_remove_all(a, false); +} + +/* + * Perform power management processing including managing device states, adapter + * states, interrupts, and I/O. + */ +bool esas2r_power_up(struct esas2r_adapter *a, bool init_poll) +{ + bool ret; + + esas2r_lock_clear_flags(&a->flags, AF_POWER_DOWN); + esas2r_init_pci_cfg_space(a); + esas2r_lock_set_flags(&a->flags, AF_FIRST_INIT); + atomic_inc(&a->disable_cnt); + + /* reinitialize the adapter */ + ret = esas2r_check_adapter(a); + if (!esas2r_init_adapter_hw(a, init_poll)) + ret = false; + + /* send the reset asynchronous event */ + esas2r_send_reset_ae(a, true); + + /* clear this flag after initialization. */ + esas2r_lock_clear_flags(&a->flags, AF_POWER_MGT); + return ret; +} + +bool esas2r_is_adapter_present(struct esas2r_adapter *a) +{ + if (a->flags & AF_NOT_PRESENT) + return false; + + if (esas2r_read_register_dword(a, MU_DOORBELL_OUT) == 0xFFFFFFFF) { + esas2r_lock_set_flags(&a->flags, AF_NOT_PRESENT); + + return false; + } + return true; +} + +const char *esas2r_get_model_name(struct esas2r_adapter *a) +{ + switch (a->pcid->subsystem_device) { + case ATTO_ESAS_R680: + return "ATTO ExpressSAS R680"; + + case ATTO_ESAS_R608: + return "ATTO ExpressSAS R608"; + + case ATTO_ESAS_R60F: + return "ATTO ExpressSAS R60F"; + + case ATTO_ESAS_R6F0: + return "ATTO ExpressSAS R6F0"; + + case ATTO_ESAS_R644: + return "ATTO ExpressSAS R644"; + + case ATTO_ESAS_R648: + return "ATTO ExpressSAS R648"; + + case ATTO_TSSC_3808: + return "ATTO ThunderStream SC 3808D"; + + case ATTO_TSSC_3808E: + return "ATTO ThunderStream SC 3808E"; + + case ATTO_TLSH_1068: + return "ATTO ThunderLink SH 1068"; + } + + return "ATTO SAS Controller"; +} + +const char *esas2r_get_model_name_short(struct esas2r_adapter *a) +{ + switch (a->pcid->subsystem_device) { + case ATTO_ESAS_R680: + return "R680"; + + case ATTO_ESAS_R608: + return "R608"; + + case ATTO_ESAS_R60F: + return "R60F"; + + case ATTO_ESAS_R6F0: + return "R6F0"; + + case ATTO_ESAS_R644: + return "R644"; + + case ATTO_ESAS_R648: + return "R648"; + + case ATTO_TSSC_3808: + return "SC 3808D"; + + case ATTO_TSSC_3808E: + return "SC 3808E"; + + case ATTO_TLSH_1068: + return "SH 1068"; + } + + return "unknown"; +} diff --git a/drivers/scsi/esas2r/esas2r_int.c b/drivers/scsi/esas2r/esas2r_int.c new file mode 100644 index 000000000000..c2d4ff57c5c3 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_int.c @@ -0,0 +1,941 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_int.c + * esas2r interrupt handling + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + +#include "esas2r.h" + +/* Local function prototypes */ +static void esas2r_doorbell_interrupt(struct esas2r_adapter *a, u32 doorbell); +static void esas2r_get_outbound_responses(struct esas2r_adapter *a); +static void esas2r_process_bus_reset(struct esas2r_adapter *a); + +/* + * Poll the adapter for interrupts and service them. + * This function handles both legacy interrupts and MSI. + */ +void esas2r_polled_interrupt(struct esas2r_adapter *a) +{ + u32 intstat; + u32 doorbell; + + esas2r_disable_chip_interrupts(a); + + intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT); + + if (intstat & MU_INTSTAT_POST_OUT) { + /* clear the interrupt */ + + esas2r_write_register_dword(a, MU_OUT_LIST_INT_STAT, + MU_OLIS_INT); + esas2r_flush_register_dword(a, MU_OUT_LIST_INT_STAT); + + esas2r_get_outbound_responses(a); + } + + if (intstat & MU_INTSTAT_DRBL) { + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell != 0) + esas2r_doorbell_interrupt(a, doorbell); + } + + esas2r_enable_chip_interrupts(a); + + if (atomic_read(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); +} + +/* + * Legacy and MSI interrupt handlers. Note that the legacy interrupt handler + * schedules a TASKLET to process events, whereas the MSI handler just + * processes interrupt events directly. + */ +irqreturn_t esas2r_interrupt(int irq, void *dev_id) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)dev_id; + + if (!esas2r_adapter_interrupt_pending(a)) + return IRQ_NONE; + + esas2r_lock_set_flags(&a->flags2, AF2_INT_PENDING); + esas2r_schedule_tasklet(a); + + return IRQ_HANDLED; +} + +void esas2r_adapter_interrupt(struct esas2r_adapter *a) +{ + u32 doorbell; + + if (likely(a->int_stat & MU_INTSTAT_POST_OUT)) { + /* clear the interrupt */ + esas2r_write_register_dword(a, MU_OUT_LIST_INT_STAT, + MU_OLIS_INT); + esas2r_flush_register_dword(a, MU_OUT_LIST_INT_STAT); + esas2r_get_outbound_responses(a); + } + + if (unlikely(a->int_stat & MU_INTSTAT_DRBL)) { + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell != 0) + esas2r_doorbell_interrupt(a, doorbell); + } + + a->int_mask = ESAS2R_INT_STS_MASK; + + esas2r_enable_chip_interrupts(a); + + if (likely(atomic_read(&a->disable_cnt) == 0)) + esas2r_do_deferred_processes(a); +} + +irqreturn_t esas2r_msi_interrupt(int irq, void *dev_id) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)dev_id; + u32 intstat; + u32 doorbell; + + intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT); + + if (likely(intstat & MU_INTSTAT_POST_OUT)) { + /* clear the interrupt */ + + esas2r_write_register_dword(a, MU_OUT_LIST_INT_STAT, + MU_OLIS_INT); + esas2r_flush_register_dword(a, MU_OUT_LIST_INT_STAT); + + esas2r_get_outbound_responses(a); + } + + if (unlikely(intstat & MU_INTSTAT_DRBL)) { + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell != 0) + esas2r_doorbell_interrupt(a, doorbell); + } + + /* + * Work around a chip bug and force a new MSI to be sent if one is + * still pending. + */ + esas2r_disable_chip_interrupts(a); + esas2r_enable_chip_interrupts(a); + + if (likely(atomic_read(&a->disable_cnt) == 0)) + esas2r_do_deferred_processes(a); + + esas2r_do_tasklet_tasks(a); + + return 1; +} + + + +static void esas2r_handle_outbound_rsp_err(struct esas2r_adapter *a, + struct esas2r_request *rq, + struct atto_vda_ob_rsp *rsp) +{ + + /* + * For I/O requests, only copy the response if an error + * occurred and setup a callback to do error processing. + */ + if (unlikely(rq->req_stat != RS_SUCCESS)) { + memcpy(&rq->func_rsp, &rsp->func_rsp, sizeof(rsp->func_rsp)); + + if (rq->req_stat == RS_ABORTED) { + if (rq->timeout > RQ_MAX_TIMEOUT) + rq->req_stat = RS_TIMEOUT; + } else if (rq->req_stat == RS_SCSI_ERROR) { + u8 scsistatus = rq->func_rsp.scsi_rsp.scsi_stat; + + esas2r_trace("scsistatus: %x", scsistatus); + + /* Any of these are a good result. */ + if (scsistatus == SAM_STAT_GOOD || scsistatus == + SAM_STAT_CONDITION_MET || scsistatus == + SAM_STAT_INTERMEDIATE || scsistatus == + SAM_STAT_INTERMEDIATE_CONDITION_MET) { + rq->req_stat = RS_SUCCESS; + rq->func_rsp.scsi_rsp.scsi_stat = + SAM_STAT_GOOD; + } + } + } +} + +static void esas2r_get_outbound_responses(struct esas2r_adapter *a) +{ + struct atto_vda_ob_rsp *rsp; + u32 rspput_ptr; + u32 rspget_ptr; + struct esas2r_request *rq; + u32 handle; + unsigned long flags; + + LIST_HEAD(comp_list); + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->queue_lock, flags); + + /* Get the outbound limit and pointers */ + rspput_ptr = le32_to_cpu(*a->outbound_copy) & MU_OLC_WRT_PTR; + rspget_ptr = a->last_read; + + esas2r_trace("rspput_ptr: %x, rspget_ptr: %x", rspput_ptr, rspget_ptr); + + /* If we don't have anything to process, get out */ + if (unlikely(rspget_ptr == rspput_ptr)) { + spin_unlock_irqrestore(&a->queue_lock, flags); + esas2r_trace_exit(); + return; + } + + /* Make sure the firmware is healthy */ + if (unlikely(rspput_ptr >= a->list_size)) { + spin_unlock_irqrestore(&a->queue_lock, flags); + esas2r_bugon(); + esas2r_local_reset_adapter(a); + esas2r_trace_exit(); + return; + } + + do { + rspget_ptr++; + + if (rspget_ptr >= a->list_size) + rspget_ptr = 0; + + rsp = (struct atto_vda_ob_rsp *)a->outbound_list_md.virt_addr + + rspget_ptr; + + handle = rsp->handle; + + /* Verify the handle range */ + if (unlikely(LOWORD(handle) == 0 + || LOWORD(handle) > num_requests + + num_ae_requests + 1)) { + esas2r_bugon(); + continue; + } + + /* Get the request for this handle */ + rq = a->req_table[LOWORD(handle)]; + + if (unlikely(rq == NULL || rq->vrq->scsi.handle != handle)) { + esas2r_bugon(); + continue; + } + + list_del(&rq->req_list); + + /* Get the completion status */ + rq->req_stat = rsp->req_stat; + + esas2r_trace("handle: %x", handle); + esas2r_trace("rq: %p", rq); + esas2r_trace("req_status: %x", rq->req_stat); + + if (likely(rq->vrq->scsi.function == VDA_FUNC_SCSI)) { + esas2r_handle_outbound_rsp_err(a, rq, rsp); + } else { + /* + * Copy the outbound completion struct for non-I/O + * requests. + */ + memcpy(&rq->func_rsp, &rsp->func_rsp, + sizeof(rsp->func_rsp)); + } + + /* Queue the request for completion. */ + list_add_tail(&rq->comp_list, &comp_list); + + } while (rspget_ptr != rspput_ptr); + + a->last_read = rspget_ptr; + spin_unlock_irqrestore(&a->queue_lock, flags); + + esas2r_comp_list_drain(a, &comp_list); + esas2r_trace_exit(); +} + +/* + * Perform all deferred processes for the adapter. Deferred + * processes can only be done while the current interrupt + * disable_cnt for the adapter is zero. + */ +void esas2r_do_deferred_processes(struct esas2r_adapter *a) +{ + int startreqs = 2; + struct esas2r_request *rq; + unsigned long flags; + + /* + * startreqs is used to control starting requests + * that are on the deferred queue + * = 0 - do not start any requests + * = 1 - can start discovery requests + * = 2 - can start any request + */ + + if (a->flags & (AF_CHPRST_PENDING | AF_FLASHING)) + startreqs = 0; + else if (a->flags & AF_DISC_PENDING) + startreqs = 1; + + atomic_inc(&a->disable_cnt); + + /* Clear off the completed list to be processed later. */ + + if (esas2r_is_tasklet_pending(a)) { + esas2r_schedule_tasklet(a); + + startreqs = 0; + } + + /* + * If we can start requests then traverse the defer queue + * looking for requests to start or complete + */ + if (startreqs && !list_empty(&a->defer_list)) { + LIST_HEAD(comp_list); + struct list_head *element, *next; + + spin_lock_irqsave(&a->queue_lock, flags); + + list_for_each_safe(element, next, &a->defer_list) { + rq = list_entry(element, struct esas2r_request, + req_list); + + if (rq->req_stat != RS_PENDING) { + list_del(element); + list_add_tail(&rq->comp_list, &comp_list); + } + /* + * Process discovery and OS requests separately. We + * can't hold up discovery requests when discovery is + * pending. In general, there may be different sets of + * conditions for starting different types of requests. + */ + else if (rq->req_type == RT_DISC_REQ) { + list_del(element); + esas2r_disc_local_start_request(a, rq); + } else if (startreqs == 2) { + list_del(element); + esas2r_local_start_request(a, rq); + + /* + * Flashing could have been set by last local + * start + */ + if (a->flags & AF_FLASHING) + break; + } + } + + spin_unlock_irqrestore(&a->queue_lock, flags); + esas2r_comp_list_drain(a, &comp_list); + } + + atomic_dec(&a->disable_cnt); +} + +/* + * Process an adapter reset (or one that is about to happen) + * by making sure all outstanding requests are completed that + * haven't been already. + */ +void esas2r_process_adapter_reset(struct esas2r_adapter *a) +{ + struct esas2r_request *rq = &a->general_req; + unsigned long flags; + struct esas2r_disc_context *dc; + + LIST_HEAD(comp_list); + struct list_head *element; + + esas2r_trace_enter(); + + spin_lock_irqsave(&a->queue_lock, flags); + + /* abort the active discovery, if any. */ + + if (rq->interrupt_cx) { + dc = (struct esas2r_disc_context *)rq->interrupt_cx; + + dc->disc_evt = 0; + + esas2r_lock_clear_flags(&a->flags, AF_DISC_IN_PROG); + } + + /* + * just clear the interrupt callback for now. it will be dequeued if + * and when we find it on the active queue and we don't want the + * callback called. also set the dummy completion callback in case we + * were doing an I/O request. + */ + + rq->interrupt_cx = NULL; + rq->interrupt_cb = NULL; + + rq->comp_cb = esas2r_dummy_complete; + + /* Reset the read and write pointers */ + + *a->outbound_copy = + a->last_write = + a->last_read = a->list_size - 1; + + esas2r_lock_set_flags(&a->flags, AF_COMM_LIST_TOGGLE); + + /* Kill all the requests on the active list */ + list_for_each(element, &a->defer_list) { + rq = list_entry(element, struct esas2r_request, req_list); + + if (rq->req_stat == RS_STARTED) + if (esas2r_ioreq_aborted(a, rq, RS_ABORTED)) + list_add_tail(&rq->comp_list, &comp_list); + } + + spin_unlock_irqrestore(&a->queue_lock, flags); + esas2r_comp_list_drain(a, &comp_list); + esas2r_process_bus_reset(a); + esas2r_trace_exit(); +} + +static void esas2r_process_bus_reset(struct esas2r_adapter *a) +{ + struct esas2r_request *rq; + struct list_head *element; + unsigned long flags; + + LIST_HEAD(comp_list); + + esas2r_trace_enter(); + + esas2r_hdebug("reset detected"); + + spin_lock_irqsave(&a->queue_lock, flags); + + /* kill all the requests on the deferred queue */ + list_for_each(element, &a->defer_list) { + rq = list_entry(element, struct esas2r_request, req_list); + if (esas2r_ioreq_aborted(a, rq, RS_ABORTED)) + list_add_tail(&rq->comp_list, &comp_list); + } + + spin_unlock_irqrestore(&a->queue_lock, flags); + + esas2r_comp_list_drain(a, &comp_list); + + if (atomic_read(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); + + esas2r_lock_clear_flags(&a->flags, AF_OS_RESET); + + esas2r_trace_exit(); +} + +static void esas2r_chip_rst_needed_during_tasklet(struct esas2r_adapter *a) +{ + + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_NEEDED); + esas2r_lock_clear_flags(&a->flags, AF_BUSRST_NEEDED); + esas2r_lock_clear_flags(&a->flags, AF_BUSRST_DETECTED); + esas2r_lock_clear_flags(&a->flags, AF_BUSRST_PENDING); + /* + * Make sure we don't get attempt more than 3 resets + * when the uptime between resets does not exceed one + * minute. This will stop any situation where there is + * really something wrong with the hardware. The way + * this works is that we start with uptime ticks at 0. + * Each time we do a reset, we add 20 seconds worth to + * the count. Each time a timer tick occurs, as long + * as a chip reset is not pending, we decrement the + * tick count. If the uptime ticks ever gets to 60 + * seconds worth, we disable the adapter from that + * point forward. Three strikes, you're out. + */ + if (!esas2r_is_adapter_present(a) || (a->chip_uptime >= + ESAS2R_CHP_UPTIME_MAX)) { + esas2r_hdebug("*** adapter disabled ***"); + + /* + * Ok, some kind of hard failure. Make sure we + * exit this loop with chip interrupts + * permanently disabled so we don't lock up the + * entire system. Also flag degraded mode to + * prevent the heartbeat from trying to recover. + */ + + esas2r_lock_set_flags(&a->flags, AF_DEGRADED_MODE); + esas2r_lock_set_flags(&a->flags, AF_DISABLED); + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_PENDING); + esas2r_lock_clear_flags(&a->flags, AF_DISC_PENDING); + + esas2r_disable_chip_interrupts(a); + a->int_mask = 0; + esas2r_process_adapter_reset(a); + + esas2r_log(ESAS2R_LOG_CRIT, + "Adapter disabled because of hardware failure"); + } else { + u32 flags = + esas2r_lock_set_flags(&a->flags, AF_CHPRST_STARTED); + + if (!(flags & AF_CHPRST_STARTED)) + /* + * Only disable interrupts if this is + * the first reset attempt. + */ + esas2r_disable_chip_interrupts(a); + + if ((a->flags & AF_POWER_MGT) && !(a->flags & AF_FIRST_INIT) && + !(flags & AF_CHPRST_STARTED)) { + /* + * Don't reset the chip on the first + * deferred power up attempt. + */ + } else { + esas2r_hdebug("*** resetting chip ***"); + esas2r_reset_chip(a); + } + + /* Kick off the reinitialization */ + a->chip_uptime += ESAS2R_CHP_UPTIME_CNT; + a->chip_init_time = jiffies_to_msecs(jiffies); + if (!(a->flags & AF_POWER_MGT)) { + esas2r_process_adapter_reset(a); + + if (!(flags & AF_CHPRST_STARTED)) { + /* Remove devices now that I/O is cleaned up. */ + a->prev_dev_cnt = + esas2r_targ_db_get_tgt_cnt(a); + esas2r_targ_db_remove_all(a, false); + } + } + + a->int_mask = 0; + } +} + +static void esas2r_handle_chip_rst_during_tasklet(struct esas2r_adapter *a) +{ + while (a->flags & AF_CHPRST_DETECTED) { + /* + * Balance the enable in esas2r_initadapter_hw. + * Esas2r_power_down already took care of it for power + * management. + */ + if (!(a->flags & AF_DEGRADED_MODE) && !(a->flags & + AF_POWER_MGT)) + esas2r_disable_chip_interrupts(a); + + /* Reinitialize the chip. */ + esas2r_check_adapter(a); + esas2r_init_adapter_hw(a, 0); + + if (a->flags & AF_CHPRST_NEEDED) + break; + + if (a->flags & AF_POWER_MGT) { + /* Recovery from power management. */ + if (a->flags & AF_FIRST_INIT) { + /* Chip reset during normal power up */ + esas2r_log(ESAS2R_LOG_CRIT, + "The firmware was reset during a normal power-up sequence"); + } else { + /* Deferred power up complete. */ + esas2r_lock_clear_flags(&a->flags, + AF_POWER_MGT); + esas2r_send_reset_ae(a, true); + } + } else { + /* Recovery from online chip reset. */ + if (a->flags & AF_FIRST_INIT) { + /* Chip reset during driver load */ + } else { + /* Chip reset after driver load */ + esas2r_send_reset_ae(a, false); + } + + esas2r_log(ESAS2R_LOG_CRIT, + "Recovering from a chip reset while the chip was online"); + } + + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_STARTED); + esas2r_enable_chip_interrupts(a); + + /* + * Clear this flag last! this indicates that the chip has been + * reset already during initialization. + */ + esas2r_lock_clear_flags(&a->flags, AF_CHPRST_DETECTED); + } +} + + +/* Perform deferred tasks when chip interrupts are disabled */ +void esas2r_do_tasklet_tasks(struct esas2r_adapter *a) +{ + if (a->flags & (AF_CHPRST_NEEDED | AF_CHPRST_DETECTED)) { + if (a->flags & AF_CHPRST_NEEDED) + esas2r_chip_rst_needed_during_tasklet(a); + + esas2r_handle_chip_rst_during_tasklet(a); + } + + if (a->flags & AF_BUSRST_NEEDED) { + esas2r_hdebug("hard resetting bus"); + + esas2r_lock_clear_flags(&a->flags, AF_BUSRST_NEEDED); + + if (a->flags & AF_FLASHING) + esas2r_lock_set_flags(&a->flags, AF_BUSRST_DETECTED); + else + esas2r_write_register_dword(a, MU_DOORBELL_IN, + DRBL_RESET_BUS); + } + + if (a->flags & AF_BUSRST_DETECTED) { + esas2r_process_bus_reset(a); + + esas2r_log_dev(ESAS2R_LOG_WARN, + &(a->host->shost_gendev), + "scsi_report_bus_reset() called"); + + scsi_report_bus_reset(a->host, 0); + + esas2r_lock_clear_flags(&a->flags, AF_BUSRST_DETECTED); + esas2r_lock_clear_flags(&a->flags, AF_BUSRST_PENDING); + + esas2r_log(ESAS2R_LOG_WARN, "Bus reset complete"); + } + + if (a->flags & AF_PORT_CHANGE) { + esas2r_lock_clear_flags(&a->flags, AF_PORT_CHANGE); + + esas2r_targ_db_report_changes(a); + } + + if (atomic_read(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); +} + +static void esas2r_doorbell_interrupt(struct esas2r_adapter *a, u32 doorbell) +{ + if (!(doorbell & DRBL_FORCE_INT)) { + esas2r_trace_enter(); + esas2r_trace("doorbell: %x", doorbell); + } + + /* First clear the doorbell bits */ + esas2r_write_register_dword(a, MU_DOORBELL_OUT, doorbell); + + if (doorbell & DRBL_RESET_BUS) + esas2r_lock_set_flags(&a->flags, AF_BUSRST_DETECTED); + + if (doorbell & DRBL_FORCE_INT) + esas2r_lock_clear_flags(&a->flags, AF_HEARTBEAT); + + if (doorbell & DRBL_PANIC_REASON_MASK) { + esas2r_hdebug("*** Firmware Panic ***"); + esas2r_log(ESAS2R_LOG_CRIT, "The firmware has panicked"); + } + + if (doorbell & DRBL_FW_RESET) { + esas2r_lock_set_flags(&a->flags2, AF2_COREDUMP_AVAIL); + esas2r_local_reset_adapter(a); + } + + if (!(doorbell & DRBL_FORCE_INT)) + esas2r_trace_exit(); +} + +void esas2r_force_interrupt(struct esas2r_adapter *a) +{ + esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_FORCE_INT | + DRBL_DRV_VER); +} + + +static void esas2r_lun_event(struct esas2r_adapter *a, union atto_vda_ae *ae, + u16 target, u32 length) +{ + struct esas2r_target *t = a->targetdb + target; + u32 cplen = length; + unsigned long flags; + + if (cplen > sizeof(t->lu_event)) + cplen = sizeof(t->lu_event); + + esas2r_trace("ae->lu.dwevent: %x", ae->lu.dwevent); + esas2r_trace("ae->lu.bystate: %x", ae->lu.bystate); + + spin_lock_irqsave(&a->mem_lock, flags); + + t->new_target_state = TS_INVALID; + + if (ae->lu.dwevent & VDAAE_LU_LOST) { + t->new_target_state = TS_NOT_PRESENT; + } else { + switch (ae->lu.bystate) { + case VDAAE_LU_NOT_PRESENT: + case VDAAE_LU_OFFLINE: + case VDAAE_LU_DELETED: + case VDAAE_LU_FACTORY_DISABLED: + t->new_target_state = TS_NOT_PRESENT; + break; + + case VDAAE_LU_ONLINE: + case VDAAE_LU_DEGRADED: + t->new_target_state = TS_PRESENT; + break; + } + } + + if (t->new_target_state != TS_INVALID) { + memcpy(&t->lu_event, &ae->lu, cplen); + + esas2r_disc_queue_event(a, DCDE_DEV_CHANGE); + } + + spin_unlock_irqrestore(&a->mem_lock, flags); +} + + + +void esas2r_ae_complete(struct esas2r_adapter *a, struct esas2r_request *rq) +{ + union atto_vda_ae *ae = + (union atto_vda_ae *)rq->vda_rsp_data->ae_data.event_data; + u32 length = le32_to_cpu(rq->func_rsp.ae_rsp.length); + union atto_vda_ae *last = + (union atto_vda_ae *)(rq->vda_rsp_data->ae_data.event_data + + length); + + esas2r_trace_enter(); + esas2r_trace("length: %d", length); + + if (length > sizeof(struct atto_vda_ae_data) + || (length & 3) != 0 + || length == 0) { + esas2r_log(ESAS2R_LOG_WARN, + "The AE request response length (%p) is too long: %d", + rq, length); + + esas2r_hdebug("aereq->length (0x%x) too long", length); + esas2r_bugon(); + + last = ae; + } + + while (ae < last) { + u16 target; + + esas2r_trace("ae: %p", ae); + esas2r_trace("ae->hdr: %p", &(ae->hdr)); + + length = ae->hdr.bylength; + + if (length > (u32)((u8 *)last - (u8 *)ae) + || (length & 3) != 0 + || length == 0) { + esas2r_log(ESAS2R_LOG_CRIT, + "the async event length is invalid (%p): %d", + ae, length); + + esas2r_hdebug("ae->hdr.length (0x%x) invalid", length); + esas2r_bugon(); + + break; + } + + esas2r_nuxi_ae_data(ae); + + esas2r_queue_fw_event(a, fw_event_vda_ae, ae, + sizeof(union atto_vda_ae)); + + switch (ae->hdr.bytype) { + case VDAAE_HDR_TYPE_RAID: + + if (ae->raid.dwflags & (VDAAE_GROUP_STATE + | VDAAE_RBLD_STATE + | VDAAE_MEMBER_CHG + | VDAAE_PART_CHG)) { + esas2r_log(ESAS2R_LOG_INFO, + "RAID event received - name:%s rebuild_state:%d group_state:%d", + ae->raid.acname, + ae->raid.byrebuild_state, + ae->raid.bygroup_state); + } + + break; + + case VDAAE_HDR_TYPE_LU: + esas2r_log(ESAS2R_LOG_INFO, + "LUN event received: event:%d target_id:%d LUN:%d state:%d", + ae->lu.dwevent, + ae->lu.id.tgtlun.wtarget_id, + ae->lu.id.tgtlun.bylun, + ae->lu.bystate); + + target = ae->lu.id.tgtlun.wtarget_id; + + if (target < ESAS2R_MAX_TARGETS) + esas2r_lun_event(a, ae, target, length); + + break; + + case VDAAE_HDR_TYPE_DISK: + esas2r_log(ESAS2R_LOG_INFO, "Disk event received"); + break; + + default: + + /* Silently ignore the rest and let the apps deal with + * them. + */ + + break; + } + + ae = (union atto_vda_ae *)((u8 *)ae + length); + } + + /* Now requeue it. */ + esas2r_start_ae_request(a, rq); + esas2r_trace_exit(); +} + +/* Send an asynchronous event for a chip reset or power management. */ +void esas2r_send_reset_ae(struct esas2r_adapter *a, bool pwr_mgt) +{ + struct atto_vda_ae_hdr ae; + + if (pwr_mgt) + ae.bytype = VDAAE_HDR_TYPE_PWRMGT; + else + ae.bytype = VDAAE_HDR_TYPE_RESET; + + ae.byversion = VDAAE_HDR_VER_0; + ae.byflags = 0; + ae.bylength = (u8)sizeof(struct atto_vda_ae_hdr); + + if (pwr_mgt) + esas2r_hdebug("*** sending power management AE ***"); + else + esas2r_hdebug("*** sending reset AE ***"); + + esas2r_queue_fw_event(a, fw_event_vda_ae, &ae, + sizeof(union atto_vda_ae)); +} + +void esas2r_dummy_complete(struct esas2r_adapter *a, struct esas2r_request *rq) +{} + +static void esas2r_check_req_rsp_sense(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + u8 snslen, snslen2; + + snslen = snslen2 = rq->func_rsp.scsi_rsp.sense_len; + + if (snslen > rq->sense_len) + snslen = rq->sense_len; + + if (snslen) { + if (rq->sense_buf) + memcpy(rq->sense_buf, rq->data_buf, snslen); + else + rq->sense_buf = (u8 *)rq->data_buf; + + /* See about possible sense data */ + if (snslen2 > 0x0c) { + u8 *s = (u8 *)rq->data_buf; + + esas2r_trace_enter(); + + /* Report LUNS data has changed */ + if (s[0x0c] == 0x3f && s[0x0d] == 0x0E) { + esas2r_trace("rq->target_id: %d", + rq->target_id); + esas2r_target_state_changed(a, rq->target_id, + TS_LUN_CHANGE); + } + + esas2r_trace("add_sense_key=%x", s[0x0c]); + esas2r_trace("add_sense_qual=%x", s[0x0d]); + esas2r_trace_exit(); + } + } + + rq->sense_len = snslen; +} + + +void esas2r_complete_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + if (rq->vrq->scsi.function == VDA_FUNC_FLASH + && rq->vrq->flash.sub_func == VDA_FLASH_COMMIT) + esas2r_lock_clear_flags(&a->flags, AF_FLASHING); + + /* See if we setup a callback to do special processing */ + + if (rq->interrupt_cb) { + (*rq->interrupt_cb)(a, rq); + + if (rq->req_stat == RS_PENDING) { + esas2r_start_request(a, rq); + return; + } + } + + if (likely(rq->vrq->scsi.function == VDA_FUNC_SCSI) + && unlikely(rq->req_stat != RS_SUCCESS)) { + esas2r_check_req_rsp_sense(a, rq); + esas2r_log_request_failure(a, rq); + } + + (*rq->comp_cb)(a, rq); +} diff --git a/drivers/scsi/esas2r/esas2r_io.c b/drivers/scsi/esas2r/esas2r_io.c new file mode 100644 index 000000000000..324e2626a08b --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_io.c @@ -0,0 +1,880 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_io.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com)mpt3sas/mpt3sas_trigger_diag. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +void esas2r_start_request(struct esas2r_adapter *a, struct esas2r_request *rq) +{ + struct esas2r_target *t = NULL; + struct esas2r_request *startrq = rq; + unsigned long flags; + + if (unlikely(a->flags & (AF_DEGRADED_MODE | AF_POWER_DOWN))) { + if (rq->vrq->scsi.function == VDA_FUNC_SCSI) + rq->req_stat = RS_SEL2; + else + rq->req_stat = RS_DEGRADED; + } else if (likely(rq->vrq->scsi.function == VDA_FUNC_SCSI)) { + t = a->targetdb + rq->target_id; + + if (unlikely(t >= a->targetdb_end + || !(t->flags & TF_USED))) { + rq->req_stat = RS_SEL; + } else { + /* copy in the target ID. */ + rq->vrq->scsi.target_id = cpu_to_le16(t->virt_targ_id); + + /* + * Test if we want to report RS_SEL for missing target. + * Note that if AF_DISC_PENDING is set than this will + * go on the defer queue. + */ + if (unlikely(t->target_state != TS_PRESENT + && !(a->flags & AF_DISC_PENDING))) + rq->req_stat = RS_SEL; + } + } + + if (unlikely(rq->req_stat != RS_PENDING)) { + esas2r_complete_request(a, rq); + return; + } + + esas2r_trace("rq=%p", rq); + esas2r_trace("rq->vrq->scsi.handle=%x", rq->vrq->scsi.handle); + + if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { + esas2r_trace("rq->target_id=%d", rq->target_id); + esas2r_trace("rq->vrq->scsi.flags=%x", rq->vrq->scsi.flags); + } + + spin_lock_irqsave(&a->queue_lock, flags); + + if (likely(list_empty(&a->defer_list) && + !(a->flags & + (AF_CHPRST_PENDING | AF_FLASHING | AF_DISC_PENDING)))) + esas2r_local_start_request(a, startrq); + else + list_add_tail(&startrq->req_list, &a->defer_list); + + spin_unlock_irqrestore(&a->queue_lock, flags); +} + +/* + * Starts the specified request. all requests have RS_PENDING set when this + * routine is called. The caller is usually esas2r_start_request, but + * esas2r_do_deferred_processes will start request that are deferred. + * + * The caller must ensure that requests can be started. + * + * esas2r_start_request will defer a request if there are already requests + * waiting or there is a chip reset pending. once the reset condition clears, + * esas2r_do_deferred_processes will call this function to start the request. + * + * When a request is started, it is placed on the active list and queued to + * the controller. + */ +void esas2r_local_start_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + esas2r_trace_enter(); + esas2r_trace("rq=%p", rq); + esas2r_trace("rq->vrq:%p", rq->vrq); + esas2r_trace("rq->vrq_md->phys_addr:%x", rq->vrq_md->phys_addr); + + if (unlikely(rq->vrq->scsi.function == VDA_FUNC_FLASH + && rq->vrq->flash.sub_func == VDA_FLASH_COMMIT)) + esas2r_lock_set_flags(&a->flags, AF_FLASHING); + + list_add_tail(&rq->req_list, &a->active_list); + esas2r_start_vda_request(a, rq); + esas2r_trace_exit(); + return; +} + +void esas2r_start_vda_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct esas2r_inbound_list_source_entry *element; + u32 dw; + + rq->req_stat = RS_STARTED; + /* + * Calculate the inbound list entry location and the current state of + * toggle bit. + */ + a->last_write++; + if (a->last_write >= a->list_size) { + a->last_write = 0; + /* update the toggle bit */ + if (a->flags & AF_COMM_LIST_TOGGLE) + esas2r_lock_clear_flags(&a->flags, + AF_COMM_LIST_TOGGLE); + else + esas2r_lock_set_flags(&a->flags, AF_COMM_LIST_TOGGLE); + } + + element = + (struct esas2r_inbound_list_source_entry *)a->inbound_list_md. + virt_addr + + a->last_write; + + /* Set the VDA request size if it was never modified */ + if (rq->vda_req_sz == RQ_SIZE_DEFAULT) + rq->vda_req_sz = (u16)(a->max_vdareq_size / sizeof(u32)); + + element->address = cpu_to_le64(rq->vrq_md->phys_addr); + element->length = cpu_to_le32(rq->vda_req_sz); + + /* Update the write pointer */ + dw = a->last_write; + + if (a->flags & AF_COMM_LIST_TOGGLE) + dw |= MU_ILW_TOGGLE; + + esas2r_trace("rq->vrq->scsi.handle:%x", rq->vrq->scsi.handle); + esas2r_trace("dw:%x", dw); + esas2r_trace("rq->vda_req_sz:%x", rq->vda_req_sz); + esas2r_write_register_dword(a, MU_IN_LIST_WRITE, dw); +} + +/* + * Build the scatter/gather list for an I/O request according to the + * specifications placed in the s/g context. The caller must initialize + * context prior to the initial call by calling esas2r_sgc_init(). + */ +bool esas2r_build_sg_list_sge(struct esas2r_adapter *a, + struct esas2r_sg_context *sgc) +{ + struct esas2r_request *rq = sgc->first_req; + union atto_vda_req *vrq = rq->vrq; + + while (sgc->length) { + u32 rem = 0; + u64 addr; + u32 len; + + len = (*sgc->get_phys_addr)(sgc, &addr); + + if (unlikely(len == 0)) + return false; + + /* if current length is more than what's left, stop there */ + if (unlikely(len > sgc->length)) + len = sgc->length; + +another_entry: + /* limit to a round number less than the maximum length */ + if (len > SGE_LEN_MAX) { + /* + * Save the remainder of the split. Whenever we limit + * an entry we come back around to build entries out + * of the leftover. We do this to prevent multiple + * calls to the get_phys_addr() function for an SGE + * that is too large. + */ + rem = len - SGE_LEN_MAX; + len = SGE_LEN_MAX; + } + + /* See if we need to allocate a new SGL */ + if (unlikely(sgc->sge.a64.curr > sgc->sge.a64.limit)) { + u8 sgelen; + struct esas2r_mem_desc *sgl; + + /* + * If no SGls are available, return failure. The + * caller can call us later with the current context + * to pick up here. + */ + sgl = esas2r_alloc_sgl(a); + + if (unlikely(sgl == NULL)) + return false; + + /* Calculate the length of the last SGE filled in */ + sgelen = (u8)((u8 *)sgc->sge.a64.curr + - (u8 *)sgc->sge.a64.last); + + /* + * Copy the last SGE filled in to the first entry of + * the new SGL to make room for the chain entry. + */ + memcpy(sgl->virt_addr, sgc->sge.a64.last, sgelen); + + /* Figure out the new curr pointer in the new segment */ + sgc->sge.a64.curr = + (struct atto_vda_sge *)((u8 *)sgl->virt_addr + + sgelen); + + /* Set the limit pointer and build the chain entry */ + sgc->sge.a64.limit = + (struct atto_vda_sge *)((u8 *)sgl->virt_addr + + sgl_page_size + - sizeof(struct + atto_vda_sge)); + sgc->sge.a64.last->length = cpu_to_le32( + SGE_CHAIN | SGE_ADDR_64); + sgc->sge.a64.last->address = + cpu_to_le64(sgl->phys_addr); + + /* + * Now, if there was a previous chain entry, then + * update it to contain the length of this segment + * and size of this chain. otherwise this is the + * first SGL, so set the chain_offset in the request. + */ + if (sgc->sge.a64.chain) { + sgc->sge.a64.chain->length |= + cpu_to_le32( + ((u8 *)(sgc->sge.a64. + last + 1) + - (u8 *)rq->sg_table-> + virt_addr) + + sizeof(struct atto_vda_sge) * + LOBIT(SGE_CHAIN_SZ)); + } else { + vrq->scsi.chain_offset = (u8) + ((u8 *)sgc-> + sge.a64.last - + (u8 *)vrq); + + /* + * This is the first SGL, so set the + * chain_offset and the VDA request size in + * the request. + */ + rq->vda_req_sz = + (vrq->scsi.chain_offset + + sizeof(struct atto_vda_sge) + + 3) + / sizeof(u32); + } + + /* + * Remember this so when we get a new SGL filled in we + * can update the length of this chain entry. + */ + sgc->sge.a64.chain = sgc->sge.a64.last; + + /* Now link the new SGL onto the primary request. */ + list_add(&sgl->next_desc, &rq->sg_table_head); + } + + /* Update last one filled in */ + sgc->sge.a64.last = sgc->sge.a64.curr; + + /* Build the new SGE and update the S/G context */ + sgc->sge.a64.curr->length = cpu_to_le32(SGE_ADDR_64 | len); + sgc->sge.a64.curr->address = cpu_to_le32(addr); + sgc->sge.a64.curr++; + sgc->cur_offset += len; + sgc->length -= len; + + /* + * Check if we previously split an entry. If so we have to + * pick up where we left off. + */ + if (rem) { + addr += len; + len = rem; + rem = 0; + goto another_entry; + } + } + + /* Mark the end of the SGL */ + sgc->sge.a64.last->length |= cpu_to_le32(SGE_LAST); + + /* + * If there was a previous chain entry, update the length to indicate + * the length of this last segment. + */ + if (sgc->sge.a64.chain) { + sgc->sge.a64.chain->length |= cpu_to_le32( + ((u8 *)(sgc->sge.a64.curr) - + (u8 *)rq->sg_table->virt_addr)); + } else { + u16 reqsize; + + /* + * The entire VDA request was not used so lets + * set the size of the VDA request to be DMA'd + */ + reqsize = + ((u16)((u8 *)sgc->sge.a64.last - (u8 *)vrq) + + sizeof(struct atto_vda_sge) + 3) / sizeof(u32); + + /* + * Only update the request size if it is bigger than what is + * already there. We can come in here twice for some management + * commands. + */ + if (reqsize > rq->vda_req_sz) + rq->vda_req_sz = reqsize; + } + return true; +} + + +/* + * Create PRD list for each I-block consumed by the command. This routine + * determines how much data is required from each I-block being consumed + * by the command. The first and last I-blocks can be partials and all of + * the I-blocks in between are for a full I-block of data. + * + * The interleave size is used to determine the number of bytes in the 1st + * I-block and the remaining I-blocks are what remeains. + */ +static bool esas2r_build_prd_iblk(struct esas2r_adapter *a, + struct esas2r_sg_context *sgc) +{ + struct esas2r_request *rq = sgc->first_req; + u64 addr; + u32 len; + struct esas2r_mem_desc *sgl; + u32 numchain = 1; + u32 rem = 0; + + while (sgc->length) { + /* Get the next address/length pair */ + + len = (*sgc->get_phys_addr)(sgc, &addr); + + if (unlikely(len == 0)) + return false; + + /* If current length is more than what's left, stop there */ + + if (unlikely(len > sgc->length)) + len = sgc->length; + +another_entry: + /* Limit to a round number less than the maximum length */ + + if (len > PRD_LEN_MAX) { + /* + * Save the remainder of the split. whenever we limit + * an entry we come back around to build entries out + * of the leftover. We do this to prevent multiple + * calls to the get_phys_addr() function for an SGE + * that is too large. + */ + rem = len - PRD_LEN_MAX; + len = PRD_LEN_MAX; + } + + /* See if we need to allocate a new SGL */ + if (sgc->sge.prd.sge_cnt == 0) { + if (len == sgc->length) { + /* + * We only have 1 PRD entry left. + * It can be placed where the chain + * entry would have gone + */ + + /* Build the simple SGE */ + sgc->sge.prd.curr->ctl_len = cpu_to_le32( + PRD_DATA | len); + sgc->sge.prd.curr->address = cpu_to_le64(addr); + + /* Adjust length related fields */ + sgc->cur_offset += len; + sgc->length -= len; + + /* We use the reserved chain entry for data */ + numchain = 0; + + break; + } + + if (sgc->sge.prd.chain) { + /* + * Fill # of entries of current SGL in previous + * chain the length of this current SGL may not + * full. + */ + + sgc->sge.prd.chain->ctl_len |= cpu_to_le32( + sgc->sge.prd.sgl_max_cnt); + } + + /* + * If no SGls are available, return failure. The + * caller can call us later with the current context + * to pick up here. + */ + + sgl = esas2r_alloc_sgl(a); + + if (unlikely(sgl == NULL)) + return false; + + /* + * Link the new SGL onto the chain + * They are in reverse order + */ + list_add(&sgl->next_desc, &rq->sg_table_head); + + /* + * An SGL was just filled in and we are starting + * a new SGL. Prime the chain of the ending SGL with + * info that points to the new SGL. The length gets + * filled in when the new SGL is filled or ended + */ + + sgc->sge.prd.chain = sgc->sge.prd.curr; + + sgc->sge.prd.chain->ctl_len = cpu_to_le32(PRD_CHAIN); + sgc->sge.prd.chain->address = + cpu_to_le64(sgl->phys_addr); + + /* + * Start a new segment. + * Take one away and save for chain SGE + */ + + sgc->sge.prd.curr = + (struct atto_physical_region_description *)sgl + -> + virt_addr; + sgc->sge.prd.sge_cnt = sgc->sge.prd.sgl_max_cnt - 1; + } + + sgc->sge.prd.sge_cnt--; + /* Build the simple SGE */ + sgc->sge.prd.curr->ctl_len = cpu_to_le32(PRD_DATA | len); + sgc->sge.prd.curr->address = cpu_to_le64(addr); + + /* Used another element. Point to the next one */ + + sgc->sge.prd.curr++; + + /* Adjust length related fields */ + + sgc->cur_offset += len; + sgc->length -= len; + + /* + * Check if we previously split an entry. If so we have to + * pick up where we left off. + */ + + if (rem) { + addr += len; + len = rem; + rem = 0; + goto another_entry; + } + } + + if (!list_empty(&rq->sg_table_head)) { + if (sgc->sge.prd.chain) { + sgc->sge.prd.chain->ctl_len |= + cpu_to_le32(sgc->sge.prd.sgl_max_cnt + - sgc->sge.prd.sge_cnt + - numchain); + } + } + + return true; +} + +bool esas2r_build_sg_list_prd(struct esas2r_adapter *a, + struct esas2r_sg_context *sgc) +{ + struct esas2r_request *rq = sgc->first_req; + u32 len = sgc->length; + struct esas2r_target *t = a->targetdb + rq->target_id; + u8 is_i_o = 0; + u16 reqsize; + struct atto_physical_region_description *curr_iblk_chn; + u8 *cdb = (u8 *)&rq->vrq->scsi.cdb[0]; + + /* + * extract LBA from command so we can determine + * the I-Block boundary + */ + + if (rq->vrq->scsi.function == VDA_FUNC_SCSI + && t->target_state == TS_PRESENT + && !(t->flags & TF_PASS_THRU)) { + u32 lbalo = 0; + + switch (rq->vrq->scsi.cdb[0]) { + case READ_16: + case WRITE_16: + { + lbalo = + MAKEDWORD(MAKEWORD(cdb[9], + cdb[8]), + MAKEWORD(cdb[7], + cdb[6])); + is_i_o = 1; + break; + } + + case READ_12: + case WRITE_12: + case READ_10: + case WRITE_10: + { + lbalo = + MAKEDWORD(MAKEWORD(cdb[5], + cdb[4]), + MAKEWORD(cdb[3], + cdb[2])); + is_i_o = 1; + break; + } + + case READ_6: + case WRITE_6: + { + lbalo = + MAKEDWORD(MAKEWORD(cdb[3], + cdb[2]), + MAKEWORD(cdb[1] & 0x1F, + 0)); + is_i_o = 1; + break; + } + + default: + break; + } + + if (is_i_o) { + u32 startlba; + + rq->vrq->scsi.iblk_cnt_prd = 0; + + /* Determine size of 1st I-block PRD list */ + startlba = t->inter_block - (lbalo & (t->inter_block - + 1)); + sgc->length = startlba * t->block_size; + + /* Chk if the 1st iblk chain starts at base of Iblock */ + if ((lbalo & (t->inter_block - 1)) == 0) + rq->flags |= RF_1ST_IBLK_BASE; + + if (sgc->length > len) + sgc->length = len; + } else { + sgc->length = len; + } + } else { + sgc->length = len; + } + + /* get our starting chain address */ + + curr_iblk_chn = + (struct atto_physical_region_description *)sgc->sge.a64.curr; + + sgc->sge.prd.sgl_max_cnt = sgl_page_size / + sizeof(struct + atto_physical_region_description); + + /* create all of the I-block PRD lists */ + + while (len) { + sgc->sge.prd.sge_cnt = 0; + sgc->sge.prd.chain = NULL; + sgc->sge.prd.curr = curr_iblk_chn; + + /* increment to next I-Block */ + + len -= sgc->length; + + /* go build the next I-Block PRD list */ + + if (unlikely(!esas2r_build_prd_iblk(a, sgc))) + return false; + + curr_iblk_chn++; + + if (is_i_o) { + rq->vrq->scsi.iblk_cnt_prd++; + + if (len > t->inter_byte) + sgc->length = t->inter_byte; + else + sgc->length = len; + } + } + + /* figure out the size used of the VDA request */ + + reqsize = ((u16)((u8 *)curr_iblk_chn - (u8 *)rq->vrq)) + / sizeof(u32); + + /* + * only update the request size if it is bigger than what is + * already there. we can come in here twice for some management + * commands. + */ + + if (reqsize > rq->vda_req_sz) + rq->vda_req_sz = reqsize; + + return true; +} + +static void esas2r_handle_pending_reset(struct esas2r_adapter *a, u32 currtime) +{ + u32 delta = currtime - a->chip_init_time; + + if (delta <= ESAS2R_CHPRST_WAIT_TIME) { + /* Wait before accessing registers */ + } else if (delta >= ESAS2R_CHPRST_TIME) { + /* + * The last reset failed so try again. Reset + * processing will give up after three tries. + */ + esas2r_local_reset_adapter(a); + } else { + /* We can now see if the firmware is ready */ + u32 doorbell; + + doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); + if (doorbell == 0xFFFFFFFF || !(doorbell & DRBL_FORCE_INT)) { + esas2r_force_interrupt(a); + } else { + u32 ver = (doorbell & DRBL_FW_VER_MSK); + + /* Driver supports API version 0 and 1 */ + esas2r_write_register_dword(a, MU_DOORBELL_OUT, + doorbell); + if (ver == DRBL_FW_VER_0) { + esas2r_lock_set_flags(&a->flags, + AF_CHPRST_DETECTED); + esas2r_lock_set_flags(&a->flags, + AF_LEGACY_SGE_MODE); + + a->max_vdareq_size = 128; + a->build_sgl = esas2r_build_sg_list_sge; + } else if (ver == DRBL_FW_VER_1) { + esas2r_lock_set_flags(&a->flags, + AF_CHPRST_DETECTED); + esas2r_lock_clear_flags(&a->flags, + AF_LEGACY_SGE_MODE); + + a->max_vdareq_size = 1024; + a->build_sgl = esas2r_build_sg_list_prd; + } else { + esas2r_local_reset_adapter(a); + } + } + } +} + + +/* This function must be called once per timer tick */ +void esas2r_timer_tick(struct esas2r_adapter *a) +{ + u32 currtime = jiffies_to_msecs(jiffies); + u32 deltatime = currtime - a->last_tick_time; + + a->last_tick_time = currtime; + + /* count down the uptime */ + if (a->chip_uptime + && !(a->flags & (AF_CHPRST_PENDING | AF_DISC_PENDING))) { + if (deltatime >= a->chip_uptime) + a->chip_uptime = 0; + else + a->chip_uptime -= deltatime; + } + + if (a->flags & AF_CHPRST_PENDING) { + if (!(a->flags & AF_CHPRST_NEEDED) + && !(a->flags & AF_CHPRST_DETECTED)) + esas2r_handle_pending_reset(a, currtime); + } else { + if (a->flags & AF_DISC_PENDING) + esas2r_disc_check_complete(a); + + if (a->flags & AF_HEARTBEAT_ENB) { + if (a->flags & AF_HEARTBEAT) { + if ((currtime - a->heartbeat_time) >= + ESAS2R_HEARTBEAT_TIME) { + esas2r_lock_clear_flags(&a->flags, + AF_HEARTBEAT); + esas2r_hdebug("heartbeat failed"); + esas2r_log(ESAS2R_LOG_CRIT, + "heartbeat failed"); + esas2r_bugon(); + esas2r_local_reset_adapter(a); + } + } else { + esas2r_lock_set_flags(&a->flags, AF_HEARTBEAT); + a->heartbeat_time = currtime; + esas2r_force_interrupt(a); + } + } + } + + if (atomic_read(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); +} + +/* + * Send the specified task management function to the target and LUN + * specified in rqaux. in addition, immediately abort any commands that + * are queued but not sent to the device according to the rules specified + * by the task management function. + */ +bool esas2r_send_task_mgmt(struct esas2r_adapter *a, + struct esas2r_request *rqaux, u8 task_mgt_func) +{ + u16 targetid = rqaux->target_id; + u8 lun = (u8)le32_to_cpu(rqaux->vrq->scsi.flags); + bool ret = false; + struct esas2r_request *rq; + struct list_head *next, *element; + unsigned long flags; + + LIST_HEAD(comp_list); + + esas2r_trace_enter(); + esas2r_trace("rqaux:%p", rqaux); + esas2r_trace("task_mgt_func:%x", task_mgt_func); + spin_lock_irqsave(&a->queue_lock, flags); + + /* search the defer queue looking for requests for the device */ + list_for_each_safe(element, next, &a->defer_list) { + rq = list_entry(element, struct esas2r_request, req_list); + + if (rq->vrq->scsi.function == VDA_FUNC_SCSI + && rq->target_id == targetid + && (((u8)le32_to_cpu(rq->vrq->scsi.flags)) == lun + || task_mgt_func == 0x20)) { /* target reset */ + /* Found a request affected by the task management */ + if (rq->req_stat == RS_PENDING) { + /* + * The request is pending or waiting. We can + * safelycomplete the request now. + */ + if (esas2r_ioreq_aborted(a, rq, RS_ABORTED)) + list_add_tail(&rq->comp_list, + &comp_list); + } + } + } + + /* Send the task management request to the firmware */ + rqaux->sense_len = 0; + rqaux->vrq->scsi.length = 0; + rqaux->target_id = targetid; + rqaux->vrq->scsi.flags |= cpu_to_le32(lun); + memset(rqaux->vrq->scsi.cdb, 0, sizeof(rqaux->vrq->scsi.cdb)); + rqaux->vrq->scsi.flags |= + cpu_to_le16(task_mgt_func * LOBIT(FCP_CMND_TM_MASK)); + + if (a->flags & AF_FLASHING) { + /* Assume success. if there are active requests, return busy */ + rqaux->req_stat = RS_SUCCESS; + + list_for_each_safe(element, next, &a->active_list) { + rq = list_entry(element, struct esas2r_request, + req_list); + if (rq->vrq->scsi.function == VDA_FUNC_SCSI + && rq->target_id == targetid + && (((u8)le32_to_cpu(rq->vrq->scsi.flags)) == lun + || task_mgt_func == 0x20)) /* target reset */ + rqaux->req_stat = RS_BUSY; + } + + ret = true; + } + + spin_unlock_irqrestore(&a->queue_lock, flags); + + if (!(a->flags & AF_FLASHING)) + esas2r_start_request(a, rqaux); + + esas2r_comp_list_drain(a, &comp_list); + + if (atomic_read(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); + + esas2r_trace_exit(); + + return ret; +} + +void esas2r_reset_bus(struct esas2r_adapter *a) +{ + esas2r_log(ESAS2R_LOG_INFO, "performing a bus reset"); + + if (!(a->flags & AF_DEGRADED_MODE) + && !(a->flags & (AF_CHPRST_PENDING | AF_DISC_PENDING))) { + esas2r_lock_set_flags(&a->flags, AF_BUSRST_NEEDED); + esas2r_lock_set_flags(&a->flags, AF_BUSRST_PENDING); + esas2r_lock_set_flags(&a->flags, AF_OS_RESET); + + esas2r_schedule_tasklet(a); + } +} + +bool esas2r_ioreq_aborted(struct esas2r_adapter *a, struct esas2r_request *rq, + u8 status) +{ + esas2r_trace_enter(); + esas2r_trace("rq:%p", rq); + list_del_init(&rq->req_list); + if (rq->timeout > RQ_MAX_TIMEOUT) { + /* + * The request timed out, but we could not abort it because a + * chip reset occurred. Return busy status. + */ + rq->req_stat = RS_BUSY; + esas2r_trace_exit(); + return true; + } + + rq->req_stat = status; + esas2r_trace_exit(); + return true; +} diff --git a/drivers/scsi/esas2r/esas2r_ioctl.c b/drivers/scsi/esas2r/esas2r_ioctl.c new file mode 100644 index 000000000000..f3d0cb885972 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_ioctl.c @@ -0,0 +1,2110 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_ioctl.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +/* + * Buffered ioctl handlers. A buffered ioctl is one which requires that we + * allocate a DMA-able memory area to communicate with the firmware. In + * order to prevent continually allocating and freeing consistent memory, + * we will allocate a global buffer the first time we need it and re-use + * it for subsequent ioctl calls that require it. + */ + +u8 *esas2r_buffered_ioctl; +dma_addr_t esas2r_buffered_ioctl_addr; +u32 esas2r_buffered_ioctl_size; +struct pci_dev *esas2r_buffered_ioctl_pcid; + +static DEFINE_SEMAPHORE(buffered_ioctl_semaphore); +typedef int (*BUFFERED_IOCTL_CALLBACK)(struct esas2r_adapter *, + struct esas2r_request *, + struct esas2r_sg_context *, + void *); +typedef void (*BUFFERED_IOCTL_DONE_CALLBACK)(struct esas2r_adapter *, + struct esas2r_request *, void *); + +struct esas2r_buffered_ioctl { + struct esas2r_adapter *a; + void *ioctl; + u32 length; + u32 control_code; + u32 offset; + BUFFERED_IOCTL_CALLBACK + callback; + void *context; + BUFFERED_IOCTL_DONE_CALLBACK + done_callback; + void *done_context; + +}; + +static void complete_fm_api_req(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + a->fm_api_command_done = 1; + wake_up_interruptible(&a->fm_api_waiter); +} + +/* Callbacks for building scatter/gather lists for FM API requests */ +static u32 get_physaddr_fm_api(struct esas2r_sg_context *sgc, u64 *addr) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)sgc->adapter; + int offset = sgc->cur_offset - a->save_offset; + + (*addr) = a->firmware.phys + offset; + return a->firmware.orig_len - offset; +} + +static u32 get_physaddr_fm_api_header(struct esas2r_sg_context *sgc, u64 *addr) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)sgc->adapter; + int offset = sgc->cur_offset - a->save_offset; + + (*addr) = a->firmware.header_buff_phys + offset; + return sizeof(struct esas2r_flash_img) - offset; +} + +/* Handle EXPRESS_IOCTL_RW_FIRMWARE ioctl with img_type = FW_IMG_FM_API. */ +static void do_fm_api(struct esas2r_adapter *a, struct esas2r_flash_img *fi) +{ + struct esas2r_request *rq; + + if (down_interruptible(&a->fm_api_semaphore)) { + fi->status = FI_STAT_BUSY; + return; + } + + rq = esas2r_alloc_request(a); + if (rq == NULL) { + up(&a->fm_api_semaphore); + fi->status = FI_STAT_BUSY; + return; + } + + if (fi == &a->firmware.header) { + a->firmware.header_buff = dma_alloc_coherent(&a->pcid->dev, + (size_t)sizeof( + struct + esas2r_flash_img), + (dma_addr_t *)&a-> + firmware. + header_buff_phys, + GFP_KERNEL); + + if (a->firmware.header_buff == NULL) { + esas2r_debug("failed to allocate header buffer!"); + fi->status = FI_STAT_BUSY; + return; + } + + memcpy(a->firmware.header_buff, fi, + sizeof(struct esas2r_flash_img)); + a->save_offset = a->firmware.header_buff; + a->fm_api_sgc.get_phys_addr = + (PGETPHYSADDR)get_physaddr_fm_api_header; + } else { + a->save_offset = (u8 *)fi; + a->fm_api_sgc.get_phys_addr = + (PGETPHYSADDR)get_physaddr_fm_api; + } + + rq->comp_cb = complete_fm_api_req; + a->fm_api_command_done = 0; + a->fm_api_sgc.cur_offset = a->save_offset; + + if (!esas2r_fm_api(a, (struct esas2r_flash_img *)a->save_offset, rq, + &a->fm_api_sgc)) + goto all_done; + + /* Now wait around for it to complete. */ + while (!a->fm_api_command_done) + wait_event_interruptible(a->fm_api_waiter, + a->fm_api_command_done); +all_done: + if (fi == &a->firmware.header) { + memcpy(fi, a->firmware.header_buff, + sizeof(struct esas2r_flash_img)); + + dma_free_coherent(&a->pcid->dev, + (size_t)sizeof(struct esas2r_flash_img), + a->firmware.header_buff, + (dma_addr_t)a->firmware.header_buff_phys); + } + + up(&a->fm_api_semaphore); + esas2r_free_request(a, (struct esas2r_request *)rq); + return; + +} + +static void complete_nvr_req(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + a->nvram_command_done = 1; + wake_up_interruptible(&a->nvram_waiter); +} + +/* Callback for building scatter/gather lists for buffered ioctls */ +static u32 get_physaddr_buffered_ioctl(struct esas2r_sg_context *sgc, + u64 *addr) +{ + int offset = (u8 *)sgc->cur_offset - esas2r_buffered_ioctl; + + (*addr) = esas2r_buffered_ioctl_addr + offset; + return esas2r_buffered_ioctl_size - offset; +} + +static void complete_buffered_ioctl_req(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + a->buffered_ioctl_done = 1; + wake_up_interruptible(&a->buffered_ioctl_waiter); +} + +static u8 handle_buffered_ioctl(struct esas2r_buffered_ioctl *bi) +{ + struct esas2r_adapter *a = bi->a; + struct esas2r_request *rq; + struct esas2r_sg_context sgc; + u8 result = IOCTL_SUCCESS; + + if (down_interruptible(&buffered_ioctl_semaphore)) + return IOCTL_OUT_OF_RESOURCES; + + /* allocate a buffer or use the existing buffer. */ + if (esas2r_buffered_ioctl) { + if (esas2r_buffered_ioctl_size < bi->length) { + /* free the too-small buffer and get a new one */ + dma_free_coherent(&a->pcid->dev, + (size_t)esas2r_buffered_ioctl_size, + esas2r_buffered_ioctl, + esas2r_buffered_ioctl_addr); + + goto allocate_buffer; + } + } else { +allocate_buffer: + esas2r_buffered_ioctl_size = bi->length; + esas2r_buffered_ioctl_pcid = a->pcid; + esas2r_buffered_ioctl = dma_alloc_coherent(&a->pcid->dev, + (size_t) + esas2r_buffered_ioctl_size, + & + esas2r_buffered_ioctl_addr, + GFP_KERNEL); + } + + if (!esas2r_buffered_ioctl) { + esas2r_log(ESAS2R_LOG_CRIT, + "could not allocate %d bytes of consistent memory " + "for a buffered ioctl!", + bi->length); + + esas2r_debug("buffered ioctl alloc failure"); + result = IOCTL_OUT_OF_RESOURCES; + goto exit_cleanly; + } + + memcpy(esas2r_buffered_ioctl, bi->ioctl, bi->length); + + rq = esas2r_alloc_request(a); + if (rq == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, + "could not allocate an internal request"); + + result = IOCTL_OUT_OF_RESOURCES; + esas2r_debug("buffered ioctl - no requests"); + goto exit_cleanly; + } + + a->buffered_ioctl_done = 0; + rq->comp_cb = complete_buffered_ioctl_req; + sgc.cur_offset = esas2r_buffered_ioctl + bi->offset; + sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_buffered_ioctl; + sgc.length = esas2r_buffered_ioctl_size; + + if (!(*bi->callback)(a, rq, &sgc, bi->context)) { + /* completed immediately, no need to wait */ + a->buffered_ioctl_done = 0; + goto free_andexit_cleanly; + } + + /* now wait around for it to complete. */ + while (!a->buffered_ioctl_done) + wait_event_interruptible(a->buffered_ioctl_waiter, + a->buffered_ioctl_done); + +free_andexit_cleanly: + if (result == IOCTL_SUCCESS && bi->done_callback) + (*bi->done_callback)(a, rq, bi->done_context); + + esas2r_free_request(a, rq); + +exit_cleanly: + if (result == IOCTL_SUCCESS) + memcpy(bi->ioctl, esas2r_buffered_ioctl, bi->length); + + up(&buffered_ioctl_semaphore); + return result; +} + +/* SMP ioctl support */ +static int smp_ioctl_callback(struct esas2r_adapter *a, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc, void *context) +{ + struct atto_ioctl_smp *si = + (struct atto_ioctl_smp *)esas2r_buffered_ioctl; + + esas2r_sgc_init(sgc, a, rq, rq->vrq->ioctl.sge); + esas2r_build_ioctl_req(a, rq, sgc->length, VDA_IOCTL_SMP); + + if (!esas2r_build_sg_list(a, rq, sgc)) { + si->status = ATTO_STS_OUT_OF_RSRC; + return false; + } + + esas2r_start_request(a, rq); + return true; +} + +static u8 handle_smp_ioctl(struct esas2r_adapter *a, struct atto_ioctl_smp *si) +{ + struct esas2r_buffered_ioctl bi; + + memset(&bi, 0, sizeof(bi)); + + bi.a = a; + bi.ioctl = si; + bi.length = sizeof(struct atto_ioctl_smp) + + le32_to_cpu(si->req_length) + + le32_to_cpu(si->rsp_length); + bi.offset = 0; + bi.callback = smp_ioctl_callback; + return handle_buffered_ioctl(&bi); +} + + +/* CSMI ioctl support */ +static void esas2r_csmi_ioctl_tunnel_comp_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + rq->target_id = le16_to_cpu(rq->func_rsp.ioctl_rsp.csmi.target_id); + rq->vrq->scsi.flags |= cpu_to_le32(rq->func_rsp.ioctl_rsp.csmi.lun); + + /* Now call the original completion callback. */ + (*rq->aux_req_cb)(a, rq); +} + +/* Tunnel a CSMI IOCTL to the back end driver for processing. */ +static bool csmi_ioctl_tunnel(struct esas2r_adapter *a, + union atto_ioctl_csmi *ci, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc, + u32 ctrl_code, + u16 target_id) +{ + struct atto_vda_ioctl_req *ioctl = &rq->vrq->ioctl; + + if (a->flags & AF_DEGRADED_MODE) + return false; + + esas2r_sgc_init(sgc, a, rq, rq->vrq->ioctl.sge); + esas2r_build_ioctl_req(a, rq, sgc->length, VDA_IOCTL_CSMI); + ioctl->csmi.ctrl_code = cpu_to_le32(ctrl_code); + ioctl->csmi.target_id = cpu_to_le16(target_id); + ioctl->csmi.lun = (u8)le32_to_cpu(rq->vrq->scsi.flags); + + /* + * Always usurp the completion callback since the interrupt callback + * mechanism may be used. + */ + rq->aux_req_cx = ci; + rq->aux_req_cb = rq->comp_cb; + rq->comp_cb = esas2r_csmi_ioctl_tunnel_comp_cb; + + if (!esas2r_build_sg_list(a, rq, sgc)) + return false; + + esas2r_start_request(a, rq); + return true; +} + +static bool check_lun(struct scsi_lun lun) +{ + bool result; + + result = ((lun.scsi_lun[7] == 0) && + (lun.scsi_lun[6] == 0) && + (lun.scsi_lun[5] == 0) && + (lun.scsi_lun[4] == 0) && + (lun.scsi_lun[3] == 0) && + (lun.scsi_lun[2] == 0) && +/* Byte 1 is intentionally skipped */ + (lun.scsi_lun[0] == 0)); + + return result; +} + +static int csmi_ioctl_callback(struct esas2r_adapter *a, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc, void *context) +{ + struct atto_csmi *ci = (struct atto_csmi *)context; + union atto_ioctl_csmi *ioctl_csmi = + (union atto_ioctl_csmi *)esas2r_buffered_ioctl; + u8 path = 0; + u8 tid = 0; + u8 lun = 0; + u32 sts = CSMI_STS_SUCCESS; + struct esas2r_target *t; + unsigned long flags; + + if (ci->control_code == CSMI_CC_GET_DEV_ADDR) { + struct atto_csmi_get_dev_addr *gda = &ci->data.dev_addr; + + path = gda->path_id; + tid = gda->target_id; + lun = gda->lun; + } else if (ci->control_code == CSMI_CC_TASK_MGT) { + struct atto_csmi_task_mgmt *tm = &ci->data.tsk_mgt; + + path = tm->path_id; + tid = tm->target_id; + lun = tm->lun; + } + + if (path > 0 || tid > ESAS2R_MAX_ID) { + rq->func_rsp.ioctl_rsp.csmi.csmi_status = cpu_to_le32( + CSMI_STS_INV_PARAM); + return false; + } + + rq->target_id = tid; + rq->vrq->scsi.flags |= cpu_to_le32(lun); + + switch (ci->control_code) { + case CSMI_CC_GET_DRVR_INFO: + { + struct atto_csmi_get_driver_info *gdi = &ioctl_csmi->drvr_info; + + strcpy(gdi->description, esas2r_get_model_name(a)); + gdi->csmi_major_rev = CSMI_MAJOR_REV; + gdi->csmi_minor_rev = CSMI_MINOR_REV; + break; + } + + case CSMI_CC_GET_CNTLR_CFG: + { + struct atto_csmi_get_cntlr_cfg *gcc = &ioctl_csmi->cntlr_cfg; + + gcc->base_io_addr = 0; + pci_read_config_dword(a->pcid, PCI_BASE_ADDRESS_2, + &gcc->base_memaddr_lo); + pci_read_config_dword(a->pcid, PCI_BASE_ADDRESS_3, + &gcc->base_memaddr_hi); + gcc->board_id = MAKEDWORD(a->pcid->subsystem_device, + a->pcid->subsystem_vendor); + gcc->slot_num = CSMI_SLOT_NUM_UNKNOWN; + gcc->cntlr_class = CSMI_CNTLR_CLASS_HBA; + gcc->io_bus_type = CSMI_BUS_TYPE_PCI; + gcc->pci_addr.bus_num = a->pcid->bus->number; + gcc->pci_addr.device_num = PCI_SLOT(a->pcid->devfn); + gcc->pci_addr.function_num = PCI_FUNC(a->pcid->devfn); + + memset(gcc->serial_num, 0, sizeof(gcc->serial_num)); + + gcc->major_rev = LOBYTE(LOWORD(a->fw_version)); + gcc->minor_rev = HIBYTE(LOWORD(a->fw_version)); + gcc->build_rev = LOBYTE(HIWORD(a->fw_version)); + gcc->release_rev = HIBYTE(HIWORD(a->fw_version)); + gcc->bios_major_rev = HIBYTE(HIWORD(a->flash_ver)); + gcc->bios_minor_rev = LOBYTE(HIWORD(a->flash_ver)); + gcc->bios_build_rev = LOWORD(a->flash_ver); + + if (a->flags2 & AF2_THUNDERLINK) + gcc->cntlr_flags = CSMI_CNTLRF_SAS_HBA + | CSMI_CNTLRF_SATA_HBA; + else + gcc->cntlr_flags = CSMI_CNTLRF_SAS_RAID + | CSMI_CNTLRF_SATA_RAID; + + gcc->rrom_major_rev = 0; + gcc->rrom_minor_rev = 0; + gcc->rrom_build_rev = 0; + gcc->rrom_release_rev = 0; + gcc->rrom_biosmajor_rev = 0; + gcc->rrom_biosminor_rev = 0; + gcc->rrom_biosbuild_rev = 0; + gcc->rrom_biosrelease_rev = 0; + break; + } + + case CSMI_CC_GET_CNTLR_STS: + { + struct atto_csmi_get_cntlr_sts *gcs = &ioctl_csmi->cntlr_sts; + + if (a->flags & AF_DEGRADED_MODE) + gcs->status = CSMI_CNTLR_STS_FAILED; + else + gcs->status = CSMI_CNTLR_STS_GOOD; + + gcs->offline_reason = CSMI_OFFLINE_NO_REASON; + break; + } + + case CSMI_CC_FW_DOWNLOAD: + case CSMI_CC_GET_RAID_INFO: + case CSMI_CC_GET_RAID_CFG: + + sts = CSMI_STS_BAD_CTRL_CODE; + break; + + case CSMI_CC_SMP_PASSTHRU: + case CSMI_CC_SSP_PASSTHRU: + case CSMI_CC_STP_PASSTHRU: + case CSMI_CC_GET_PHY_INFO: + case CSMI_CC_SET_PHY_INFO: + case CSMI_CC_GET_LINK_ERRORS: + case CSMI_CC_GET_SATA_SIG: + case CSMI_CC_GET_CONN_INFO: + case CSMI_CC_PHY_CTRL: + + if (!csmi_ioctl_tunnel(a, ioctl_csmi, rq, sgc, + ci->control_code, + ESAS2R_TARG_ID_INV)) { + sts = CSMI_STS_FAILED; + break; + } + + return true; + + case CSMI_CC_GET_SCSI_ADDR: + { + struct atto_csmi_get_scsi_addr *gsa = &ioctl_csmi->scsi_addr; + + struct scsi_lun lun; + + memcpy(&lun, gsa->sas_lun, sizeof(struct scsi_lun)); + + if (!check_lun(lun)) { + sts = CSMI_STS_NO_SCSI_ADDR; + break; + } + + /* make sure the device is present */ + spin_lock_irqsave(&a->mem_lock, flags); + t = esas2r_targ_db_find_by_sas_addr(a, (u64 *)gsa->sas_addr); + spin_unlock_irqrestore(&a->mem_lock, flags); + + if (t == NULL) { + sts = CSMI_STS_NO_SCSI_ADDR; + break; + } + + gsa->host_index = 0xFF; + gsa->lun = gsa->sas_lun[1]; + rq->target_id = esas2r_targ_get_id(t, a); + break; + } + + case CSMI_CC_GET_DEV_ADDR: + { + struct atto_csmi_get_dev_addr *gda = &ioctl_csmi->dev_addr; + + /* make sure the target is present */ + t = a->targetdb + rq->target_id; + + if (t >= a->targetdb_end + || t->target_state != TS_PRESENT + || t->sas_addr == 0) { + sts = CSMI_STS_NO_DEV_ADDR; + break; + } + + /* fill in the result */ + *(u64 *)gda->sas_addr = t->sas_addr; + memset(gda->sas_lun, 0, sizeof(gda->sas_lun)); + gda->sas_lun[1] = (u8)le32_to_cpu(rq->vrq->scsi.flags); + break; + } + + case CSMI_CC_TASK_MGT: + + /* make sure the target is present */ + t = a->targetdb + rq->target_id; + + if (t >= a->targetdb_end + || t->target_state != TS_PRESENT + || !(t->flags & TF_PASS_THRU)) { + sts = CSMI_STS_NO_DEV_ADDR; + break; + } + + if (!csmi_ioctl_tunnel(a, ioctl_csmi, rq, sgc, + ci->control_code, + t->phys_targ_id)) { + sts = CSMI_STS_FAILED; + break; + } + + return true; + + default: + + sts = CSMI_STS_BAD_CTRL_CODE; + break; + } + + rq->func_rsp.ioctl_rsp.csmi.csmi_status = cpu_to_le32(sts); + + return false; +} + + +static void csmi_ioctl_done_callback(struct esas2r_adapter *a, + struct esas2r_request *rq, void *context) +{ + struct atto_csmi *ci = (struct atto_csmi *)context; + union atto_ioctl_csmi *ioctl_csmi = + (union atto_ioctl_csmi *)esas2r_buffered_ioctl; + + switch (ci->control_code) { + case CSMI_CC_GET_DRVR_INFO: + { + struct atto_csmi_get_driver_info *gdi = + &ioctl_csmi->drvr_info; + + strcpy(gdi->name, ESAS2R_VERSION_STR); + + gdi->major_rev = ESAS2R_MAJOR_REV; + gdi->minor_rev = ESAS2R_MINOR_REV; + gdi->build_rev = 0; + gdi->release_rev = 0; + break; + } + + case CSMI_CC_GET_SCSI_ADDR: + { + struct atto_csmi_get_scsi_addr *gsa = &ioctl_csmi->scsi_addr; + + if (le32_to_cpu(rq->func_rsp.ioctl_rsp.csmi.csmi_status) == + CSMI_STS_SUCCESS) { + gsa->target_id = rq->target_id; + gsa->path_id = 0; + } + + break; + } + } + + ci->status = le32_to_cpu(rq->func_rsp.ioctl_rsp.csmi.csmi_status); +} + + +static u8 handle_csmi_ioctl(struct esas2r_adapter *a, struct atto_csmi *ci) +{ + struct esas2r_buffered_ioctl bi; + + memset(&bi, 0, sizeof(bi)); + + bi.a = a; + bi.ioctl = &ci->data; + bi.length = sizeof(union atto_ioctl_csmi); + bi.offset = 0; + bi.callback = csmi_ioctl_callback; + bi.context = ci; + bi.done_callback = csmi_ioctl_done_callback; + bi.done_context = ci; + + return handle_buffered_ioctl(&bi); +} + +/* ATTO HBA ioctl support */ + +/* Tunnel an ATTO HBA IOCTL to the back end driver for processing. */ +static bool hba_ioctl_tunnel(struct esas2r_adapter *a, + struct atto_ioctl *hi, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc) +{ + esas2r_sgc_init(sgc, a, rq, rq->vrq->ioctl.sge); + + esas2r_build_ioctl_req(a, rq, sgc->length, VDA_IOCTL_HBA); + + if (!esas2r_build_sg_list(a, rq, sgc)) { + hi->status = ATTO_STS_OUT_OF_RSRC; + + return false; + } + + esas2r_start_request(a, rq); + + return true; +} + +static void scsi_passthru_comp_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct atto_ioctl *hi = (struct atto_ioctl *)rq->aux_req_cx; + struct atto_hba_scsi_pass_thru *spt = &hi->data.scsi_pass_thru; + u8 sts = ATTO_SPT_RS_FAILED; + + spt->scsi_status = rq->func_rsp.scsi_rsp.scsi_stat; + spt->sense_length = rq->sense_len; + spt->residual_length = + le32_to_cpu(rq->func_rsp.scsi_rsp.residual_length); + + switch (rq->req_stat) { + case RS_SUCCESS: + case RS_SCSI_ERROR: + sts = ATTO_SPT_RS_SUCCESS; + break; + case RS_UNDERRUN: + sts = ATTO_SPT_RS_UNDERRUN; + break; + case RS_OVERRUN: + sts = ATTO_SPT_RS_OVERRUN; + break; + case RS_SEL: + case RS_SEL2: + sts = ATTO_SPT_RS_NO_DEVICE; + break; + case RS_NO_LUN: + sts = ATTO_SPT_RS_NO_LUN; + break; + case RS_TIMEOUT: + sts = ATTO_SPT_RS_TIMEOUT; + break; + case RS_DEGRADED: + sts = ATTO_SPT_RS_DEGRADED; + break; + case RS_BUSY: + sts = ATTO_SPT_RS_BUSY; + break; + case RS_ABORTED: + sts = ATTO_SPT_RS_ABORTED; + break; + case RS_RESET: + sts = ATTO_SPT_RS_BUS_RESET; + break; + } + + spt->req_status = sts; + + /* Update the target ID to the next one present. */ + spt->target_id = + esas2r_targ_db_find_next_present(a, (u16)spt->target_id); + + /* Done, call the completion callback. */ + (*rq->aux_req_cb)(a, rq); +} + +static int hba_ioctl_callback(struct esas2r_adapter *a, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc, + void *context) +{ + struct atto_ioctl *hi = (struct atto_ioctl *)esas2r_buffered_ioctl; + + hi->status = ATTO_STS_SUCCESS; + + switch (hi->function) { + case ATTO_FUNC_GET_ADAP_INFO: + { + u8 *class_code = (u8 *)&a->pcid->class; + + struct atto_hba_get_adapter_info *gai = + &hi->data.get_adap_info; + int pcie_cap_reg; + + if (hi->flags & HBAF_TUNNEL) { + hi->status = ATTO_STS_UNSUPPORTED; + break; + } + + if (hi->version > ATTO_VER_GET_ADAP_INFO0) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_GET_ADAP_INFO0; + break; + } + + memset(gai, 0, sizeof(*gai)); + + gai->pci.vendor_id = a->pcid->vendor; + gai->pci.device_id = a->pcid->device; + gai->pci.ss_vendor_id = a->pcid->subsystem_vendor; + gai->pci.ss_device_id = a->pcid->subsystem_device; + gai->pci.class_code[0] = class_code[0]; + gai->pci.class_code[1] = class_code[1]; + gai->pci.class_code[2] = class_code[2]; + gai->pci.rev_id = a->pcid->revision; + gai->pci.bus_num = a->pcid->bus->number; + gai->pci.dev_num = PCI_SLOT(a->pcid->devfn); + gai->pci.func_num = PCI_FUNC(a->pcid->devfn); + + pcie_cap_reg = pci_find_capability(a->pcid, PCI_CAP_ID_EXP); + if (pcie_cap_reg) { + u16 stat; + u32 caps; + + pci_read_config_word(a->pcid, + pcie_cap_reg + PCI_EXP_LNKSTA, + &stat); + pci_read_config_dword(a->pcid, + pcie_cap_reg + PCI_EXP_LNKCAP, + &caps); + + gai->pci.link_speed_curr = + (u8)(stat & PCI_EXP_LNKSTA_CLS); + gai->pci.link_speed_max = + (u8)(caps & PCI_EXP_LNKCAP_SLS); + gai->pci.link_width_curr = + (u8)((stat & PCI_EXP_LNKSTA_NLW) + >> PCI_EXP_LNKSTA_NLW_SHIFT); + gai->pci.link_width_max = + (u8)((caps & PCI_EXP_LNKCAP_MLW) + >> 4); + } + + gai->pci.msi_vector_cnt = 1; + + if (a->pcid->msix_enabled) + gai->pci.interrupt_mode = ATTO_GAI_PCIIM_MSIX; + else if (a->pcid->msi_enabled) + gai->pci.interrupt_mode = ATTO_GAI_PCIIM_MSI; + else + gai->pci.interrupt_mode = ATTO_GAI_PCIIM_LEGACY; + + gai->adap_type = ATTO_GAI_AT_ESASRAID2; + + if (a->flags2 & AF2_THUNDERLINK) + gai->adap_type = ATTO_GAI_AT_TLSASHBA; + + if (a->flags & AF_DEGRADED_MODE) + gai->adap_flags |= ATTO_GAI_AF_DEGRADED; + + gai->adap_flags |= ATTO_GAI_AF_SPT_SUPP | + ATTO_GAI_AF_DEVADDR_SUPP; + + if (a->pcid->subsystem_device == ATTO_ESAS_R60F + || a->pcid->subsystem_device == ATTO_ESAS_R608 + || a->pcid->subsystem_device == ATTO_ESAS_R644 + || a->pcid->subsystem_device == ATTO_TSSC_3808E) + gai->adap_flags |= ATTO_GAI_AF_VIRT_SES; + + gai->num_ports = ESAS2R_NUM_PHYS; + gai->num_phys = ESAS2R_NUM_PHYS; + + strcpy(gai->firmware_rev, a->fw_rev); + strcpy(gai->flash_rev, a->flash_rev); + strcpy(gai->model_name_short, esas2r_get_model_name_short(a)); + strcpy(gai->model_name, esas2r_get_model_name(a)); + + gai->num_targets = ESAS2R_MAX_TARGETS; + + gai->num_busses = 1; + gai->num_targsper_bus = gai->num_targets; + gai->num_lunsper_targ = 256; + + if (a->pcid->subsystem_device == ATTO_ESAS_R6F0 + || a->pcid->subsystem_device == ATTO_ESAS_R60F) + gai->num_connectors = 4; + else + gai->num_connectors = 2; + + gai->adap_flags2 |= ATTO_GAI_AF2_ADAP_CTRL_SUPP; + + gai->num_targets_backend = a->num_targets_backend; + + gai->tunnel_flags = a->ioctl_tunnel + & (ATTO_GAI_TF_MEM_RW + | ATTO_GAI_TF_TRACE + | ATTO_GAI_TF_SCSI_PASS_THRU + | ATTO_GAI_TF_GET_DEV_ADDR + | ATTO_GAI_TF_PHY_CTRL + | ATTO_GAI_TF_CONN_CTRL + | ATTO_GAI_TF_GET_DEV_INFO); + break; + } + + case ATTO_FUNC_GET_ADAP_ADDR: + { + struct atto_hba_get_adapter_address *gaa = + &hi->data.get_adap_addr; + + if (hi->flags & HBAF_TUNNEL) { + hi->status = ATTO_STS_UNSUPPORTED; + break; + } + + if (hi->version > ATTO_VER_GET_ADAP_ADDR0) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_GET_ADAP_ADDR0; + } else if (gaa->addr_type == ATTO_GAA_AT_PORT + || gaa->addr_type == ATTO_GAA_AT_NODE) { + if (gaa->addr_type == ATTO_GAA_AT_PORT + && gaa->port_id >= ESAS2R_NUM_PHYS) { + hi->status = ATTO_STS_NOT_APPL; + } else { + memcpy((u64 *)gaa->address, + &a->nvram->sas_addr[0], sizeof(u64)); + gaa->addr_len = sizeof(u64); + } + } else { + hi->status = ATTO_STS_INV_PARAM; + } + + break; + } + + case ATTO_FUNC_MEM_RW: + { + if (hi->flags & HBAF_TUNNEL) { + if (hba_ioctl_tunnel(a, hi, rq, sgc)) + return true; + + break; + } + + hi->status = ATTO_STS_UNSUPPORTED; + + break; + } + + case ATTO_FUNC_TRACE: + { + struct atto_hba_trace *trc = &hi->data.trace; + + if (hi->flags & HBAF_TUNNEL) { + if (hba_ioctl_tunnel(a, hi, rq, sgc)) + return true; + + break; + } + + if (hi->version > ATTO_VER_TRACE1) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_TRACE1; + break; + } + + if (trc->trace_type == ATTO_TRC_TT_FWCOREDUMP + && hi->version >= ATTO_VER_TRACE1) { + if (trc->trace_func == ATTO_TRC_TF_UPLOAD) { + u32 len = hi->data_length; + u32 offset = trc->current_offset; + u32 total_len = ESAS2R_FWCOREDUMP_SZ; + + /* Size is zero if a core dump isn't present */ + if (!(a->flags2 & AF2_COREDUMP_SAVED)) + total_len = 0; + + if (len > total_len) + len = total_len; + + if (offset >= total_len + || offset + len > total_len + || len == 0) { + hi->status = ATTO_STS_INV_PARAM; + break; + } + + memcpy(trc + 1, + a->fw_coredump_buff + offset, + len); + + hi->data_length = len; + } else if (trc->trace_func == ATTO_TRC_TF_RESET) { + memset(a->fw_coredump_buff, 0, + ESAS2R_FWCOREDUMP_SZ); + + esas2r_lock_clear_flags(&a->flags2, + AF2_COREDUMP_SAVED); + } else if (trc->trace_func != ATTO_TRC_TF_GET_INFO) { + hi->status = ATTO_STS_UNSUPPORTED; + break; + } + + /* Always return all the info we can. */ + trc->trace_mask = 0; + trc->current_offset = 0; + trc->total_length = ESAS2R_FWCOREDUMP_SZ; + + /* Return zero length buffer if core dump not present */ + if (!(a->flags2 & AF2_COREDUMP_SAVED)) + trc->total_length = 0; + } else { + hi->status = ATTO_STS_UNSUPPORTED; + } + + break; + } + + case ATTO_FUNC_SCSI_PASS_THRU: + { + struct atto_hba_scsi_pass_thru *spt = &hi->data.scsi_pass_thru; + struct scsi_lun lun; + + memcpy(&lun, spt->lun, sizeof(struct scsi_lun)); + + if (hi->flags & HBAF_TUNNEL) { + if (hba_ioctl_tunnel(a, hi, rq, sgc)) + return true; + + break; + } + + if (hi->version > ATTO_VER_SCSI_PASS_THRU0) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_SCSI_PASS_THRU0; + break; + } + + if (spt->target_id >= ESAS2R_MAX_TARGETS || !check_lun(lun)) { + hi->status = ATTO_STS_INV_PARAM; + break; + } + + esas2r_sgc_init(sgc, a, rq, NULL); + + sgc->length = hi->data_length; + sgc->cur_offset += offsetof(struct atto_ioctl, data.byte) + + sizeof(struct atto_hba_scsi_pass_thru); + + /* Finish request initialization */ + rq->target_id = (u16)spt->target_id; + rq->vrq->scsi.flags |= cpu_to_le32(spt->lun[1]); + memcpy(rq->vrq->scsi.cdb, spt->cdb, 16); + rq->vrq->scsi.length = cpu_to_le32(hi->data_length); + rq->sense_len = spt->sense_length; + rq->sense_buf = (u8 *)spt->sense_data; + /* NOTE: we ignore spt->timeout */ + + /* + * always usurp the completion callback since the interrupt + * callback mechanism may be used. + */ + + rq->aux_req_cx = hi; + rq->aux_req_cb = rq->comp_cb; + rq->comp_cb = scsi_passthru_comp_cb; + + if (spt->flags & ATTO_SPTF_DATA_IN) { + rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD); + } else if (spt->flags & ATTO_SPTF_DATA_OUT) { + rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD); + } else { + if (sgc->length) { + hi->status = ATTO_STS_INV_PARAM; + break; + } + } + + if (spt->flags & ATTO_SPTF_ORDERED_Q) + rq->vrq->scsi.flags |= + cpu_to_le32(FCP_CMND_TA_ORDRD_Q); + else if (spt->flags & ATTO_SPTF_HEAD_OF_Q) + rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_TA_HEAD_Q); + + if (!esas2r_build_sg_list(a, rq, sgc)) { + hi->status = ATTO_STS_OUT_OF_RSRC; + break; + } + + esas2r_start_request(a, rq); + + return true; + } + + case ATTO_FUNC_GET_DEV_ADDR: + { + struct atto_hba_get_device_address *gda = + &hi->data.get_dev_addr; + struct esas2r_target *t; + + if (hi->flags & HBAF_TUNNEL) { + if (hba_ioctl_tunnel(a, hi, rq, sgc)) + return true; + + break; + } + + if (hi->version > ATTO_VER_GET_DEV_ADDR0) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_GET_DEV_ADDR0; + break; + } + + if (gda->target_id >= ESAS2R_MAX_TARGETS) { + hi->status = ATTO_STS_INV_PARAM; + break; + } + + t = a->targetdb + (u16)gda->target_id; + + if (t->target_state != TS_PRESENT) { + hi->status = ATTO_STS_FAILED; + } else if (gda->addr_type == ATTO_GDA_AT_PORT) { + if (t->sas_addr == 0) { + hi->status = ATTO_STS_UNSUPPORTED; + } else { + *(u64 *)gda->address = t->sas_addr; + + gda->addr_len = sizeof(u64); + } + } else if (gda->addr_type == ATTO_GDA_AT_NODE) { + hi->status = ATTO_STS_NOT_APPL; + } else { + hi->status = ATTO_STS_INV_PARAM; + } + + /* update the target ID to the next one present. */ + + gda->target_id = + esas2r_targ_db_find_next_present(a, + (u16)gda->target_id); + break; + } + + case ATTO_FUNC_PHY_CTRL: + case ATTO_FUNC_CONN_CTRL: + { + if (hba_ioctl_tunnel(a, hi, rq, sgc)) + return true; + + break; + } + + case ATTO_FUNC_ADAP_CTRL: + { + struct atto_hba_adap_ctrl *ac = &hi->data.adap_ctrl; + + if (hi->flags & HBAF_TUNNEL) { + hi->status = ATTO_STS_UNSUPPORTED; + break; + } + + if (hi->version > ATTO_VER_ADAP_CTRL0) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_ADAP_CTRL0; + break; + } + + if (ac->adap_func == ATTO_AC_AF_HARD_RST) { + esas2r_reset_adapter(a); + } else if (ac->adap_func != ATTO_AC_AF_GET_STATE) { + hi->status = ATTO_STS_UNSUPPORTED; + break; + } + + if (a->flags & AF_CHPRST_NEEDED) + ac->adap_state = ATTO_AC_AS_RST_SCHED; + else if (a->flags & AF_CHPRST_PENDING) + ac->adap_state = ATTO_AC_AS_RST_IN_PROG; + else if (a->flags & AF_DISC_PENDING) + ac->adap_state = ATTO_AC_AS_RST_DISC; + else if (a->flags & AF_DISABLED) + ac->adap_state = ATTO_AC_AS_DISABLED; + else if (a->flags & AF_DEGRADED_MODE) + ac->adap_state = ATTO_AC_AS_DEGRADED; + else + ac->adap_state = ATTO_AC_AS_OK; + + break; + } + + case ATTO_FUNC_GET_DEV_INFO: + { + struct atto_hba_get_device_info *gdi = &hi->data.get_dev_info; + struct esas2r_target *t; + + if (hi->flags & HBAF_TUNNEL) { + if (hba_ioctl_tunnel(a, hi, rq, sgc)) + return true; + + break; + } + + if (hi->version > ATTO_VER_GET_DEV_INFO0) { + hi->status = ATTO_STS_INV_VERSION; + hi->version = ATTO_VER_GET_DEV_INFO0; + break; + } + + if (gdi->target_id >= ESAS2R_MAX_TARGETS) { + hi->status = ATTO_STS_INV_PARAM; + break; + } + + t = a->targetdb + (u16)gdi->target_id; + + /* update the target ID to the next one present. */ + + gdi->target_id = + esas2r_targ_db_find_next_present(a, + (u16)gdi->target_id); + + if (t->target_state != TS_PRESENT) { + hi->status = ATTO_STS_FAILED; + break; + } + + hi->status = ATTO_STS_UNSUPPORTED; + break; + } + + default: + + hi->status = ATTO_STS_INV_FUNC; + break; + } + + return false; +} + +static void hba_ioctl_done_callback(struct esas2r_adapter *a, + struct esas2r_request *rq, void *context) +{ + struct atto_ioctl *ioctl_hba = + (struct atto_ioctl *)esas2r_buffered_ioctl; + + esas2r_debug("hba_ioctl_done_callback %d", a->index); + + if (ioctl_hba->function == ATTO_FUNC_GET_ADAP_INFO) { + struct atto_hba_get_adapter_info *gai = + &ioctl_hba->data.get_adap_info; + + esas2r_debug("ATTO_FUNC_GET_ADAP_INFO"); + + gai->drvr_rev_major = ESAS2R_MAJOR_REV; + gai->drvr_rev_minor = ESAS2R_MINOR_REV; + + strcpy(gai->drvr_rev_ascii, ESAS2R_VERSION_STR); + strcpy(gai->drvr_name, ESAS2R_DRVR_NAME); + + gai->num_busses = 1; + gai->num_targsper_bus = ESAS2R_MAX_ID + 1; + gai->num_lunsper_targ = 1; + } +} + +u8 handle_hba_ioctl(struct esas2r_adapter *a, + struct atto_ioctl *ioctl_hba) +{ + struct esas2r_buffered_ioctl bi; + + memset(&bi, 0, sizeof(bi)); + + bi.a = a; + bi.ioctl = ioctl_hba; + bi.length = sizeof(struct atto_ioctl) + ioctl_hba->data_length; + bi.callback = hba_ioctl_callback; + bi.context = NULL; + bi.done_callback = hba_ioctl_done_callback; + bi.done_context = NULL; + bi.offset = 0; + + return handle_buffered_ioctl(&bi); +} + + +int esas2r_write_params(struct esas2r_adapter *a, struct esas2r_request *rq, + struct esas2r_sas_nvram *data) +{ + int result = 0; + + a->nvram_command_done = 0; + rq->comp_cb = complete_nvr_req; + + if (esas2r_nvram_write(a, rq, data)) { + /* now wait around for it to complete. */ + while (!a->nvram_command_done) + wait_event_interruptible(a->nvram_waiter, + a->nvram_command_done); + ; + + /* done, check the status. */ + if (rq->req_stat == RS_SUCCESS) + result = 1; + } + return result; +} + + +/* This function only cares about ATTO-specific ioctls (atto_express_ioctl) */ +int esas2r_ioctl_handler(void *hostdata, int cmd, void __user *arg) +{ + struct atto_express_ioctl *ioctl = NULL; + struct esas2r_adapter *a; + struct esas2r_request *rq; + u16 code; + int err; + + esas2r_log(ESAS2R_LOG_DEBG, "ioctl (%p, %x, %p)", hostdata, cmd, arg); + + if ((arg == NULL) + || (cmd < EXPRESS_IOCTL_MIN) + || (cmd > EXPRESS_IOCTL_MAX)) + return -ENOTSUPP; + + if (!access_ok(VERIFY_WRITE, arg, sizeof(struct atto_express_ioctl))) { + esas2r_log(ESAS2R_LOG_WARN, + "ioctl_handler access_ok failed for cmd %d, " + "address %p", cmd, + arg); + return -EFAULT; + } + + /* allocate a kernel memory buffer for the IOCTL data */ + ioctl = kzalloc(sizeof(struct atto_express_ioctl), GFP_KERNEL); + if (ioctl == NULL) { + esas2r_log(ESAS2R_LOG_WARN, + "ioctl_handler kzalloc failed for %d bytes", + sizeof(struct atto_express_ioctl)); + return -ENOMEM; + } + + err = __copy_from_user(ioctl, arg, sizeof(struct atto_express_ioctl)); + if (err != 0) { + esas2r_log(ESAS2R_LOG_WARN, + "copy_from_user didn't copy everything (err %d, cmd %d)", + err, + cmd); + kfree(ioctl); + + return -EFAULT; + } + + /* verify the signature */ + + if (memcmp(ioctl->header.signature, + EXPRESS_IOCTL_SIGNATURE, + EXPRESS_IOCTL_SIGNATURE_SIZE) != 0) { + esas2r_log(ESAS2R_LOG_WARN, "invalid signature"); + kfree(ioctl); + + return -ENOTSUPP; + } + + /* assume success */ + + ioctl->header.return_code = IOCTL_SUCCESS; + err = 0; + + /* + * handle EXPRESS_IOCTL_GET_CHANNELS + * without paying attention to channel + */ + + if (cmd == EXPRESS_IOCTL_GET_CHANNELS) { + int i = 0, k = 0; + + ioctl->data.chanlist.num_channels = 0; + + while (i < MAX_ADAPTERS) { + if (esas2r_adapters[i]) { + ioctl->data.chanlist.num_channels++; + ioctl->data.chanlist.channel[k] = i; + k++; + } + i++; + } + + goto ioctl_done; + } + + /* get the channel */ + + if (ioctl->header.channel == 0xFF) { + a = (struct esas2r_adapter *)hostdata; + } else { + a = esas2r_adapters[ioctl->header.channel]; + if (ioctl->header.channel >= MAX_ADAPTERS || (a == NULL)) { + ioctl->header.return_code = IOCTL_BAD_CHANNEL; + esas2r_log(ESAS2R_LOG_WARN, "bad channel value"); + kfree(ioctl); + + return -ENOTSUPP; + } + } + + switch (cmd) { + case EXPRESS_IOCTL_RW_FIRMWARE: + + if (ioctl->data.fwrw.img_type == FW_IMG_FM_API) { + err = esas2r_write_fw(a, + (char *)ioctl->data.fwrw.image, + 0, + sizeof(struct + atto_express_ioctl)); + + if (err >= 0) { + err = esas2r_read_fw(a, + (char *)ioctl->data.fwrw. + image, + 0, + sizeof(struct + atto_express_ioctl)); + } + } else if (ioctl->data.fwrw.img_type == FW_IMG_FS_API) { + err = esas2r_write_fs(a, + (char *)ioctl->data.fwrw.image, + 0, + sizeof(struct + atto_express_ioctl)); + + if (err >= 0) { + err = esas2r_read_fs(a, + (char *)ioctl->data.fwrw. + image, + 0, + sizeof(struct + atto_express_ioctl)); + } + } else { + ioctl->header.return_code = IOCTL_BAD_FLASH_IMGTYPE; + } + + break; + + case EXPRESS_IOCTL_READ_PARAMS: + + memcpy(ioctl->data.prw.data_buffer, a->nvram, + sizeof(struct esas2r_sas_nvram)); + ioctl->data.prw.code = 1; + break; + + case EXPRESS_IOCTL_WRITE_PARAMS: + + rq = esas2r_alloc_request(a); + if (rq == NULL) { + up(&a->nvram_semaphore); + ioctl->data.prw.code = 0; + break; + } + + code = esas2r_write_params(a, rq, + (struct esas2r_sas_nvram *)ioctl->data.prw.data_buffer); + ioctl->data.prw.code = code; + + esas2r_free_request(a, rq); + + break; + + case EXPRESS_IOCTL_DEFAULT_PARAMS: + + esas2r_nvram_get_defaults(a, + (struct esas2r_sas_nvram *)ioctl->data.prw.data_buffer); + ioctl->data.prw.code = 1; + break; + + case EXPRESS_IOCTL_CHAN_INFO: + + ioctl->data.chaninfo.major_rev = ESAS2R_MAJOR_REV; + ioctl->data.chaninfo.minor_rev = ESAS2R_MINOR_REV; + ioctl->data.chaninfo.IRQ = a->pcid->irq; + ioctl->data.chaninfo.device_id = a->pcid->device; + ioctl->data.chaninfo.vendor_id = a->pcid->vendor; + ioctl->data.chaninfo.ven_dev_id = a->pcid->subsystem_device; + ioctl->data.chaninfo.revision_id = a->pcid->revision; + ioctl->data.chaninfo.pci_bus = a->pcid->bus->number; + ioctl->data.chaninfo.pci_dev_func = a->pcid->devfn; + ioctl->data.chaninfo.core_rev = 0; + ioctl->data.chaninfo.host_no = a->host->host_no; + ioctl->data.chaninfo.hbaapi_rev = 0; + break; + + case EXPRESS_IOCTL_SMP: + ioctl->header.return_code = handle_smp_ioctl(a, + &ioctl->data. + ioctl_smp); + break; + + case EXPRESS_CSMI: + ioctl->header.return_code = + handle_csmi_ioctl(a, &ioctl->data.csmi); + break; + + case EXPRESS_IOCTL_HBA: + ioctl->header.return_code = handle_hba_ioctl(a, + &ioctl->data. + ioctl_hba); + break; + + case EXPRESS_IOCTL_VDA: + err = esas2r_write_vda(a, + (char *)&ioctl->data.ioctl_vda, + 0, + sizeof(struct atto_ioctl_vda) + + ioctl->data.ioctl_vda.data_length); + + if (err >= 0) { + err = esas2r_read_vda(a, + (char *)&ioctl->data.ioctl_vda, + 0, + sizeof(struct atto_ioctl_vda) + + ioctl->data.ioctl_vda.data_length); + } + + + + + break; + + case EXPRESS_IOCTL_GET_MOD_INFO: + + ioctl->data.modinfo.adapter = a; + ioctl->data.modinfo.pci_dev = a->pcid; + ioctl->data.modinfo.scsi_host = a->host; + ioctl->data.modinfo.host_no = a->host->host_no; + + break; + + default: + esas2r_debug("esas2r_ioctl invalid cmd %p!", cmd); + ioctl->header.return_code = IOCTL_ERR_INVCMD; + } + +ioctl_done: + + if (err < 0) { + esas2r_log(ESAS2R_LOG_WARN, "err %d on ioctl cmd %d", err, + cmd); + + switch (err) { + case -ENOMEM: + case -EBUSY: + ioctl->header.return_code = IOCTL_OUT_OF_RESOURCES; + break; + + case -ENOSYS: + case -EINVAL: + ioctl->header.return_code = IOCTL_INVALID_PARAM; + break; + } + + ioctl->header.return_code = IOCTL_GENERAL_ERROR; + } + + /* Always copy the buffer back, if only to pick up the status */ + err = __copy_to_user(arg, ioctl, sizeof(struct atto_express_ioctl)); + if (err != 0) { + esas2r_log(ESAS2R_LOG_WARN, + "ioctl_handler copy_to_user didn't copy " + "everything (err %d, cmd %d)", err, + cmd); + kfree(ioctl); + + return -EFAULT; + } + + kfree(ioctl); + + return 0; +} + +int esas2r_ioctl(struct scsi_device *sd, int cmd, void __user *arg) +{ + return esas2r_ioctl_handler(sd->host->hostdata, cmd, arg); +} + +static void free_fw_buffers(struct esas2r_adapter *a) +{ + if (a->firmware.data) { + dma_free_coherent(&a->pcid->dev, + (size_t)a->firmware.orig_len, + a->firmware.data, + (dma_addr_t)a->firmware.phys); + + a->firmware.data = NULL; + } +} + +static int allocate_fw_buffers(struct esas2r_adapter *a, u32 length) +{ + free_fw_buffers(a); + + a->firmware.orig_len = length; + + a->firmware.data = (u8 *)dma_alloc_coherent(&a->pcid->dev, + (size_t)length, + (dma_addr_t *)&a->firmware. + phys, + GFP_KERNEL); + + if (!a->firmware.data) { + esas2r_debug("buffer alloc failed!"); + return 0; + } + + return 1; +} + +/* Handle a call to read firmware. */ +int esas2r_read_fw(struct esas2r_adapter *a, char *buf, long off, int count) +{ + esas2r_trace_enter(); + /* if the cached header is a status, simply copy it over and return. */ + if (a->firmware.state == FW_STATUS_ST) { + int size = min_t(int, count, sizeof(a->firmware.header)); + esas2r_trace_exit(); + memcpy(buf, &a->firmware.header, size); + esas2r_debug("esas2r_read_fw: STATUS size %d", size); + return size; + } + + /* + * if the cached header is a command, do it if at + * offset 0, otherwise copy the pieces. + */ + + if (a->firmware.state == FW_COMMAND_ST) { + u32 length = a->firmware.header.length; + esas2r_trace_exit(); + + esas2r_debug("esas2r_read_fw: COMMAND length %d off %d", + length, + off); + + if (off == 0) { + if (a->firmware.header.action == FI_ACT_UP) { + if (!allocate_fw_buffers(a, length)) + return -ENOMEM; + + + /* copy header over */ + + memcpy(a->firmware.data, + &a->firmware.header, + sizeof(a->firmware.header)); + + do_fm_api(a, + (struct esas2r_flash_img *)a->firmware.data); + } else if (a->firmware.header.action == FI_ACT_UPSZ) { + int size = + min((int)count, + (int)sizeof(a->firmware.header)); + do_fm_api(a, &a->firmware.header); + memcpy(buf, &a->firmware.header, size); + esas2r_debug("FI_ACT_UPSZ size %d", size); + return size; + } else { + esas2r_debug("invalid action %d", + a->firmware.header.action); + return -ENOSYS; + } + } + + if (count + off > length) + count = length - off; + + if (count < 0) + return 0; + + if (!a->firmware.data) { + esas2r_debug( + "read: nonzero offset but no buffer available!"); + return -ENOMEM; + } + + esas2r_debug("esas2r_read_fw: off %d count %d length %d ", off, + count, + length); + + memcpy(buf, &a->firmware.data[off], count); + + /* when done, release the buffer */ + + if (length <= off + count) { + esas2r_debug("esas2r_read_fw: freeing buffer!"); + + free_fw_buffers(a); + } + + return count; + } + + esas2r_trace_exit(); + esas2r_debug("esas2r_read_fw: invalid firmware state %d", + a->firmware.state); + + return -EINVAL; +} + +/* Handle a call to write firmware. */ +int esas2r_write_fw(struct esas2r_adapter *a, const char *buf, long off, + int count) +{ + u32 length; + + if (off == 0) { + struct esas2r_flash_img *header = + (struct esas2r_flash_img *)buf; + + /* assume version 0 flash image */ + + int min_size = sizeof(struct esas2r_flash_img_v0); + + a->firmware.state = FW_INVALID_ST; + + /* validate the version field first */ + + if (count < 4 + || header->fi_version > FI_VERSION_1) { + esas2r_debug( + "esas2r_write_fw: short header or invalid version"); + return -EINVAL; + } + + /* See if its a version 1 flash image */ + + if (header->fi_version == FI_VERSION_1) + min_size = sizeof(struct esas2r_flash_img); + + /* If this is the start, the header must be full and valid. */ + if (count < min_size) { + esas2r_debug("esas2r_write_fw: short header, aborting"); + return -EINVAL; + } + + /* Make sure the size is reasonable. */ + length = header->length; + + if (length > 1024 * 1024) { + esas2r_debug( + "esas2r_write_fw: hosed, length %d fi_version %d", + length, header->fi_version); + return -EINVAL; + } + + /* + * If this is a write command, allocate memory because + * we have to cache everything. otherwise, just cache + * the header, because the read op will do the command. + */ + + if (header->action == FI_ACT_DOWN) { + if (!allocate_fw_buffers(a, length)) + return -ENOMEM; + + /* + * Store the command, so there is context on subsequent + * calls. + */ + memcpy(&a->firmware.header, + buf, + sizeof(*header)); + } else if (header->action == FI_ACT_UP + || header->action == FI_ACT_UPSZ) { + /* Save the command, result will be picked up on read */ + memcpy(&a->firmware.header, + buf, + sizeof(*header)); + + a->firmware.state = FW_COMMAND_ST; + + esas2r_debug( + "esas2r_write_fw: COMMAND, count %d, action %d ", + count, header->action); + + /* + * Pretend we took the whole buffer, + * so we don't get bothered again. + */ + + return count; + } else { + esas2r_debug("esas2r_write_fw: invalid action %d ", + a->firmware.header.action); + return -ENOSYS; + } + } else { + length = a->firmware.header.length; + } + + /* + * We only get here on a download command, regardless of offset. + * the chunks written by the system need to be cached, and when + * the final one arrives, issue the fmapi command. + */ + + if (off + count > length) + count = length - off; + + if (count > 0) { + esas2r_debug("esas2r_write_fw: off %d count %d length %d", off, + count, + length); + + /* + * On a full upload, the system tries sending the whole buffer. + * there's nothing to do with it, so just drop it here, before + * trying to copy over into unallocated memory! + */ + if (a->firmware.header.action == FI_ACT_UP) + return count; + + if (!a->firmware.data) { + esas2r_debug( + "write: nonzero offset but no buffer available!"); + return -ENOMEM; + } + + memcpy(&a->firmware.data[off], buf, count); + + if (length == off + count) { + do_fm_api(a, + (struct esas2r_flash_img *)a->firmware.data); + + /* + * Now copy the header result to be picked up by the + * next read + */ + memcpy(&a->firmware.header, + a->firmware.data, + sizeof(a->firmware.header)); + + a->firmware.state = FW_STATUS_ST; + + esas2r_debug("write completed"); + + /* + * Since the system has the data buffered, the only way + * this can leak is if a root user writes a program + * that writes a shorter buffer than it claims, and the + * copyin fails. + */ + free_fw_buffers(a); + } + } + + return count; +} + +/* Callback for the completion of a VDA request. */ +static void vda_complete_req(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + a->vda_command_done = 1; + wake_up_interruptible(&a->vda_waiter); +} + +/* Scatter/gather callback for VDA requests */ +static u32 get_physaddr_vda(struct esas2r_sg_context *sgc, u64 *addr) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)sgc->adapter; + int offset = (u8 *)sgc->cur_offset - (u8 *)a->vda_buffer; + + (*addr) = a->ppvda_buffer + offset; + return VDA_MAX_BUFFER_SIZE - offset; +} + +/* Handle a call to read a VDA command. */ +int esas2r_read_vda(struct esas2r_adapter *a, char *buf, long off, int count) +{ + if (!a->vda_buffer) + return -ENOMEM; + + if (off == 0) { + struct esas2r_request *rq; + struct atto_ioctl_vda *vi = + (struct atto_ioctl_vda *)a->vda_buffer; + struct esas2r_sg_context sgc; + bool wait_for_completion; + + /* + * Presumeably, someone has already written to the vda_buffer, + * and now they are reading the node the response, so now we + * will actually issue the request to the chip and reply. + */ + + /* allocate a request */ + rq = esas2r_alloc_request(a); + if (rq == NULL) { + esas2r_debug("esas2r_read_vda: out of requestss"); + return -EBUSY; + } + + rq->comp_cb = vda_complete_req; + + sgc.first_req = rq; + sgc.adapter = a; + sgc.cur_offset = a->vda_buffer + VDA_BUFFER_HEADER_SZ; + sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_vda; + + a->vda_command_done = 0; + + wait_for_completion = + esas2r_process_vda_ioctl(a, vi, rq, &sgc); + + if (wait_for_completion) { + /* now wait around for it to complete. */ + + while (!a->vda_command_done) + wait_event_interruptible(a->vda_waiter, + a->vda_command_done); + } + + esas2r_free_request(a, (struct esas2r_request *)rq); + } + + if (off > VDA_MAX_BUFFER_SIZE) + return 0; + + if (count + off > VDA_MAX_BUFFER_SIZE) + count = VDA_MAX_BUFFER_SIZE - off; + + if (count < 0) + return 0; + + memcpy(buf, a->vda_buffer + off, count); + + return count; +} + +/* Handle a call to write a VDA command. */ +int esas2r_write_vda(struct esas2r_adapter *a, const char *buf, long off, + int count) +{ + /* + * allocate memory for it, if not already done. once allocated, + * we will keep it around until the driver is unloaded. + */ + + if (!a->vda_buffer) { + dma_addr_t dma_addr; + a->vda_buffer = (u8 *)dma_alloc_coherent(&a->pcid->dev, + (size_t) + VDA_MAX_BUFFER_SIZE, + &dma_addr, + GFP_KERNEL); + + a->ppvda_buffer = dma_addr; + } + + if (!a->vda_buffer) + return -ENOMEM; + + if (off > VDA_MAX_BUFFER_SIZE) + return 0; + + if (count + off > VDA_MAX_BUFFER_SIZE) + count = VDA_MAX_BUFFER_SIZE - off; + + if (count < 1) + return 0; + + memcpy(a->vda_buffer + off, buf, count); + + return count; +} + +/* Callback for the completion of an FS_API request.*/ +static void fs_api_complete_req(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + a->fs_api_command_done = 1; + + wake_up_interruptible(&a->fs_api_waiter); +} + +/* Scatter/gather callback for VDA requests */ +static u32 get_physaddr_fs_api(struct esas2r_sg_context *sgc, u64 *addr) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)sgc->adapter; + struct esas2r_ioctl_fs *fs = + (struct esas2r_ioctl_fs *)a->fs_api_buffer; + u32 offset = (u8 *)sgc->cur_offset - (u8 *)fs; + + (*addr) = a->ppfs_api_buffer + offset; + + return a->fs_api_buffer_size - offset; +} + +/* Handle a call to read firmware via FS_API. */ +int esas2r_read_fs(struct esas2r_adapter *a, char *buf, long off, int count) +{ + if (!a->fs_api_buffer) + return -ENOMEM; + + if (off == 0) { + struct esas2r_request *rq; + struct esas2r_sg_context sgc; + struct esas2r_ioctl_fs *fs = + (struct esas2r_ioctl_fs *)a->fs_api_buffer; + + /* If another flash request is already in progress, return. */ + if (down_interruptible(&a->fs_api_semaphore)) { +busy: + fs->status = ATTO_STS_OUT_OF_RSRC; + return -EBUSY; + } + + /* + * Presumeably, someone has already written to the + * fs_api_buffer, and now they are reading the node the + * response, so now we will actually issue the request to the + * chip and reply. Allocate a request + */ + + rq = esas2r_alloc_request(a); + if (rq == NULL) { + esas2r_debug("esas2r_read_fs: out of requests"); + up(&a->fs_api_semaphore); + goto busy; + } + + rq->comp_cb = fs_api_complete_req; + + /* Set up the SGCONTEXT for to build the s/g table */ + + sgc.cur_offset = fs->data; + sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_fs_api; + + a->fs_api_command_done = 0; + + if (!esas2r_process_fs_ioctl(a, fs, rq, &sgc)) { + if (fs->status == ATTO_STS_OUT_OF_RSRC) + count = -EBUSY; + + goto dont_wait; + } + + /* Now wait around for it to complete. */ + + while (!a->fs_api_command_done) + wait_event_interruptible(a->fs_api_waiter, + a->fs_api_command_done); + ; +dont_wait: + /* Free the request and keep going */ + up(&a->fs_api_semaphore); + esas2r_free_request(a, (struct esas2r_request *)rq); + + /* Pick up possible error code from above */ + if (count < 0) + return count; + } + + if (off > a->fs_api_buffer_size) + return 0; + + if (count + off > a->fs_api_buffer_size) + count = a->fs_api_buffer_size - off; + + if (count < 0) + return 0; + + memcpy(buf, a->fs_api_buffer + off, count); + + return count; +} + +/* Handle a call to write firmware via FS_API. */ +int esas2r_write_fs(struct esas2r_adapter *a, const char *buf, long off, + int count) +{ + if (off == 0) { + struct esas2r_ioctl_fs *fs = (struct esas2r_ioctl_fs *)buf; + u32 length = fs->command.length + offsetof( + struct esas2r_ioctl_fs, + data); + + /* + * Special case, for BEGIN commands, the length field + * is lying to us, so just get enough for the header. + */ + + if (fs->command.command == ESAS2R_FS_CMD_BEGINW) + length = offsetof(struct esas2r_ioctl_fs, data); + + /* + * Beginning a command. We assume we'll get at least + * enough in the first write so we can look at the + * header and see how much we need to alloc. + */ + + if (count < offsetof(struct esas2r_ioctl_fs, data)) + return -EINVAL; + + /* Allocate a buffer or use the existing buffer. */ + if (a->fs_api_buffer) { + if (a->fs_api_buffer_size < length) { + /* Free too-small buffer and get a new one */ + dma_free_coherent(&a->pcid->dev, + (size_t)a->fs_api_buffer_size, + a->fs_api_buffer, + (dma_addr_t)a->ppfs_api_buffer); + + goto re_allocate_buffer; + } + } else { +re_allocate_buffer: + a->fs_api_buffer_size = length; + + a->fs_api_buffer = (u8 *)dma_alloc_coherent( + &a->pcid->dev, + (size_t)a->fs_api_buffer_size, + (dma_addr_t *)&a->ppfs_api_buffer, + GFP_KERNEL); + } + } + + if (!a->fs_api_buffer) + return -ENOMEM; + + if (off > a->fs_api_buffer_size) + return 0; + + if (count + off > a->fs_api_buffer_size) + count = a->fs_api_buffer_size - off; + + if (count < 1) + return 0; + + memcpy(a->fs_api_buffer + off, buf, count); + + return count; +} diff --git a/drivers/scsi/esas2r/esas2r_log.c b/drivers/scsi/esas2r/esas2r_log.c new file mode 100644 index 000000000000..9bf285df58dd --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_log.c @@ -0,0 +1,254 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_log.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +/* + * this module within the driver is tasked with providing logging functionality. + * the event_log_level module parameter controls the level of messages that are + * written to the system log. the default level of messages that are written + * are critical and warning messages. if other types of messages are desired, + * one simply needs to load the module with the correct value for the + * event_log_level module parameter. for example: + * + * insmod <module> event_log_level=1 + * + * will load the module and only critical events will be written by this module + * to the system log. if critical, warning, and information-level messages are + * desired, the correct value for the event_log_level module parameter + * would be as follows: + * + * insmod <module> event_log_level=3 + */ + +#define EVENT_LOG_BUFF_SIZE 1024 + +static long event_log_level = ESAS2R_LOG_DFLT; + +module_param(event_log_level, long, S_IRUGO | S_IRUSR); +MODULE_PARM_DESC(event_log_level, + "Specifies the level of events to report to the system log. Critical and warning level events are logged by default."); + +/* A shared buffer to use for formatting messages. */ +static char event_buffer[EVENT_LOG_BUFF_SIZE]; + +/* A lock to protect the shared buffer used for formatting messages. */ +static DEFINE_SPINLOCK(event_buffer_lock); + +/** + * translates an esas2r-defined logging event level to a kernel logging level. + * + * @param [in] level the esas2r-defined logging event level to translate + * + * @return the corresponding kernel logging level. + */ +static const char *translate_esas2r_event_level_to_kernel(const long level) +{ + switch (level) { + case ESAS2R_LOG_CRIT: + return KERN_CRIT; + + case ESAS2R_LOG_WARN: + return KERN_WARNING; + + case ESAS2R_LOG_INFO: + return KERN_INFO; + + case ESAS2R_LOG_DEBG: + case ESAS2R_LOG_TRCE: + default: + return KERN_DEBUG; + } +} + +/** + * the master logging function. this function will format the message as + * outlined by the formatting string, the input device information and the + * substitution arguments and output the resulting string to the system log. + * + * @param [in] level the event log level of the message + * @param [in] dev the device information + * @param [in] format the formatting string for the message + * @param [in] args the substition arguments to the formatting string + * + * @return 0 on success, or -1 if an error occurred. + */ +static int esas2r_log_master(const long level, + const struct device *dev, + const char *format, + va_list args) +{ + if (level <= event_log_level) { + unsigned long flags = 0; + int retval = 0; + char *buffer = event_buffer; + size_t buflen = EVENT_LOG_BUFF_SIZE; + const char *fmt_nodev = "%s%s: "; + const char *fmt_dev = "%s%s [%s, %s, %s]"; + const char *slevel = + translate_esas2r_event_level_to_kernel(level); + + spin_lock_irqsave(&event_buffer_lock, flags); + + if (buffer == NULL) { + spin_unlock_irqrestore(&event_buffer_lock, flags); + return -1; + } + + memset(buffer, 0, buflen); + + /* + * format the level onto the beginning of the string and do + * some pointer arithmetic to move the pointer to the point + * where the actual message can be inserted. + */ + + if (dev == NULL) { + snprintf(buffer, buflen, fmt_nodev, slevel, + ESAS2R_DRVR_NAME); + } else { + snprintf(buffer, buflen, fmt_dev, slevel, + ESAS2R_DRVR_NAME, + (dev->driver ? dev->driver->name : "unknown"), + (dev->bus ? dev->bus->name : "unknown"), + dev_name(dev)); + } + + buffer += strlen(event_buffer); + buflen -= strlen(event_buffer); + + retval = vsnprintf(buffer, buflen, format, args); + if (retval < 0) { + spin_unlock_irqrestore(&event_buffer_lock, flags); + return -1; + } + + /* + * Put a line break at the end of the formatted string so that + * we don't wind up with run-on messages. only append if there + * is enough space in the buffer. + */ + if (strlen(event_buffer) < buflen) + strcat(buffer, "\n"); + + printk(event_buffer); + + spin_unlock_irqrestore(&event_buffer_lock, flags); + } + + return 0; +} + +/** + * formats and logs a message to the system log. + * + * @param [in] level the event level of the message + * @param [in] format the formating string for the message + * @param [in] ... the substitution arguments to the formatting string + * + * @return 0 on success, or -1 if an error occurred. + */ +int esas2r_log(const long level, const char *format, ...) +{ + int retval = 0; + va_list args; + + va_start(args, format); + + retval = esas2r_log_master(level, NULL, format, args); + + va_end(args); + + return retval; +} + +/** + * formats and logs a message to the system log. this message will include + * device information. + * + * @param [in] level the event level of the message + * @param [in] dev the device information + * @param [in] format the formatting string for the message + * @param [in] ... the substitution arguments to the formatting string + * + * @return 0 on success, or -1 if an error occurred. + */ +int esas2r_log_dev(const long level, + const struct device *dev, + const char *format, + ...) +{ + int retval = 0; + va_list args; + + va_start(args, format); + + retval = esas2r_log_master(level, dev, format, args); + + va_end(args); + + return retval; +} + +/** + * formats and logs a message to the system log. this message will include + * device information. + * + * @param [in] level the event level of the message + * @param [in] buf + * @param [in] len + * + * @return 0 on success, or -1 if an error occurred. + */ +int esas2r_log_hexdump(const long level, + const void *buf, + size_t len) +{ + if (level <= event_log_level) { + print_hex_dump(translate_esas2r_event_level_to_kernel(level), + "", DUMP_PREFIX_OFFSET, 16, 1, buf, + len, true); + } + + return 1; +} diff --git a/drivers/scsi/esas2r/esas2r_log.h b/drivers/scsi/esas2r/esas2r_log.h new file mode 100644 index 000000000000..7b6397bb5b94 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_log.h @@ -0,0 +1,118 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_log.h + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#ifndef __esas2r_log_h__ +#define __esas2r_log_h__ + +struct device; + +enum { + ESAS2R_LOG_NONE = 0, /* no events logged */ + ESAS2R_LOG_CRIT = 1, /* critical events */ + ESAS2R_LOG_WARN = 2, /* warning events */ + ESAS2R_LOG_INFO = 3, /* info events */ + ESAS2R_LOG_DEBG = 4, /* debugging events */ + ESAS2R_LOG_TRCE = 5, /* tracing events */ + +#ifdef ESAS2R_TRACE + ESAS2R_LOG_DFLT = ESAS2R_LOG_TRCE +#else + ESAS2R_LOG_DFLT = ESAS2R_LOG_WARN +#endif +}; + +int esas2r_log(const long level, const char *format, ...); +int esas2r_log_dev(const long level, + const struct device *dev, + const char *format, + ...); +int esas2r_log_hexdump(const long level, + const void *buf, + size_t len); + +/* + * the following macros are provided specifically for debugging and tracing + * messages. esas2r_debug() is provided for generic non-hardware layer + * debugging and tracing events. esas2r_hdebug is provided specifically for + * hardware layer debugging and tracing events. + */ + +#ifdef ESAS2R_DEBUG +#define esas2r_debug(f, args ...) esas2r_log(ESAS2R_LOG_DEBG, f, ## args) +#define esas2r_hdebug(f, args ...) esas2r_log(ESAS2R_LOG_DEBG, f, ## args) +#else +#define esas2r_debug(f, args ...) +#define esas2r_hdebug(f, args ...) +#endif /* ESAS2R_DEBUG */ + +/* + * the following macros are provided in order to trace the driver and catch + * some more serious bugs. be warned, enabling these macros may *severely* + * impact performance. + */ + +#ifdef ESAS2R_TRACE +#define esas2r_bugon() \ + do { \ + esas2r_log(ESAS2R_LOG_TRCE, "esas2r_bugon() called in %s:%d" \ + " - dumping stack and stopping kernel", __func__, \ + __LINE__); \ + dump_stack(); \ + BUG(); \ + } while (0) + +#define esas2r_trace_enter() esas2r_log(ESAS2R_LOG_TRCE, "entered %s (%s:%d)", \ + __func__, __FILE__, __LINE__) +#define esas2r_trace_exit() esas2r_log(ESAS2R_LOG_TRCE, "exited %s (%s:%d)", \ + __func__, __FILE__, __LINE__) +#define esas2r_trace(f, args ...) esas2r_log(ESAS2R_LOG_TRCE, "(%s:%s:%d): " \ + f, __func__, __FILE__, __LINE__, \ + ## args) +#else +#define esas2r_bugon() +#define esas2r_trace_enter() +#define esas2r_trace_exit() +#define esas2r_trace(f, args ...) +#endif /* ESAS2R_TRACE */ + +#endif /* __esas2r_log_h__ */ diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c new file mode 100644 index 000000000000..4abf1272e1eb --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_main.c @@ -0,0 +1,2032 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_main.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver"); +MODULE_AUTHOR("ATTO Technology, Inc."); +MODULE_LICENSE("GPL"); +MODULE_VERSION(ESAS2R_VERSION_STR); + +/* global definitions */ + +static int found_adapters; +struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS]; + +#define ESAS2R_VDA_EVENT_PORT1 54414 +#define ESAS2R_VDA_EVENT_PORT2 54415 +#define ESAS2R_VDA_EVENT_SOCK_COUNT 2 + +static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct Scsi_Host *host = class_to_shost(dev); + + return (struct esas2r_adapter *)host->hostdata; +} + +static ssize_t read_fw(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + + return esas2r_read_fw(a, buf, off, count); +} + +static ssize_t write_fw(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + + return esas2r_write_fw(a, buf, off, count); +} + +static ssize_t read_fs(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + + return esas2r_read_fs(a, buf, off, count); +} + +static ssize_t write_fs(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + int length = min(sizeof(struct esas2r_ioctl_fs), count); + int result = 0; + + result = esas2r_write_fs(a, buf, off, count); + + if (result < 0) + result = 0; + + return length; +} + +static ssize_t read_vda(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + + return esas2r_read_vda(a, buf, off, count); +} + +static ssize_t write_vda(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + + return esas2r_write_vda(a, buf, off, count); +} + +static ssize_t read_live_nvram(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE); + + memcpy(buf, a->nvram, length); + return length; +} + +static ssize_t write_live_nvram(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + struct esas2r_request *rq; + int result = -EFAULT; + + rq = esas2r_alloc_request(a); + if (rq == NULL) + return -ENOMEM; + + if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf)) + result = count; + + esas2r_free_request(a, rq); + + return result; +} + +static ssize_t read_default_nvram(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + + esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf); + + return sizeof(struct esas2r_sas_nvram); +} + +static ssize_t read_hw(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE); + + if (!a->local_atto_ioctl) + return -ENOMEM; + + if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS) + return -ENOMEM; + + memcpy(buf, a->local_atto_ioctl, length); + + return length; +} + +static ssize_t write_hw(struct file *file, struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, size_t count) +{ + struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); + int length = min(sizeof(struct atto_ioctl), count); + + if (!a->local_atto_ioctl) { + a->local_atto_ioctl = kzalloc(sizeof(struct atto_ioctl), + GFP_KERNEL); + if (a->local_atto_ioctl == NULL) { + esas2r_log(ESAS2R_LOG_WARN, + "write_hw kzalloc failed for %d bytes", + sizeof(struct atto_ioctl)); + return -ENOMEM; + } + } + + memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl)); + memcpy(a->local_atto_ioctl, buf, length); + + return length; +} + +#define ESAS2R_RW_BIN_ATTR(_name) \ + struct bin_attribute bin_attr_ ## _name = { \ + .attr = \ + { .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \ + .size = 0, \ + .read = read_ ## _name, \ + .write = write_ ## _name } + +ESAS2R_RW_BIN_ATTR(fw); +ESAS2R_RW_BIN_ATTR(fs); +ESAS2R_RW_BIN_ATTR(vda); +ESAS2R_RW_BIN_ATTR(hw); +ESAS2R_RW_BIN_ATTR(live_nvram); + +struct bin_attribute bin_attr_default_nvram = { + .attr = { .name = "default_nvram", .mode = S_IRUGO }, + .size = 0, + .read = read_default_nvram, + .write = NULL +}; + +static struct scsi_host_template driver_template = { + .module = THIS_MODULE, + .show_info = esas2r_show_info, + .name = ESAS2R_LONGNAME, + .release = esas2r_release, + .info = esas2r_info, + .ioctl = esas2r_ioctl, + .queuecommand = esas2r_queuecommand, + .eh_abort_handler = esas2r_eh_abort, + .eh_device_reset_handler = esas2r_device_reset, + .eh_bus_reset_handler = esas2r_bus_reset, + .eh_host_reset_handler = esas2r_host_reset, + .eh_target_reset_handler = esas2r_target_reset, + .can_queue = 128, + .this_id = -1, + .sg_tablesize = SCSI_MAX_SG_SEGMENTS, + .cmd_per_lun = + ESAS2R_DEFAULT_CMD_PER_LUN, + .present = 0, + .unchecked_isa_dma = 0, + .use_clustering = ENABLE_CLUSTERING, + .emulated = 0, + .proc_name = ESAS2R_DRVR_NAME, + .slave_configure = esas2r_slave_configure, + .slave_alloc = esas2r_slave_alloc, + .slave_destroy = esas2r_slave_destroy, + .change_queue_depth = esas2r_change_queue_depth, + .change_queue_type = esas2r_change_queue_type, + .max_sectors = 0xFFFF, +}; + +int sgl_page_size = 512; +module_param(sgl_page_size, int, 0); +MODULE_PARM_DESC(sgl_page_size, + "Scatter/gather list (SGL) page size in number of S/G " + "entries. If your application is doing a lot of very large " + "transfers, you may want to increase the SGL page size. " + "Default 512."); + +int num_sg_lists = 1024; +module_param(num_sg_lists, int, 0); +MODULE_PARM_DESC(num_sg_lists, + "Number of scatter/gather lists. Default 1024."); + +int sg_tablesize = SCSI_MAX_SG_SEGMENTS; +module_param(sg_tablesize, int, 0); +MODULE_PARM_DESC(sg_tablesize, + "Maximum number of entries in a scatter/gather table."); + +int num_requests = 256; +module_param(num_requests, int, 0); +MODULE_PARM_DESC(num_requests, + "Number of requests. Default 256."); + +int num_ae_requests = 4; +module_param(num_ae_requests, int, 0); +MODULE_PARM_DESC(num_ae_requests, + "Number of VDA asynchromous event requests. Default 4."); + +int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN; +module_param(cmd_per_lun, int, 0); +MODULE_PARM_DESC(cmd_per_lun, + "Maximum number of commands per LUN. Default " + DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) "."); + +int can_queue = 128; +module_param(can_queue, int, 0); +MODULE_PARM_DESC(can_queue, + "Maximum number of commands per adapter. Default 128."); + +int esas2r_max_sectors = 0xFFFF; +module_param(esas2r_max_sectors, int, 0); +MODULE_PARM_DESC(esas2r_max_sectors, + "Maximum number of disk sectors in a single data transfer. " + "Default 65535 (largest possible setting)."); + +int interrupt_mode = 1; +module_param(interrupt_mode, int, 0); +MODULE_PARM_DESC(interrupt_mode, + "Defines the interrupt mode to use. 0 for legacy" + ", 1 for MSI. Default is MSI (1)."); + +static struct pci_device_id + esas2r_pci_table[] = { + { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049, + 0, + 0, 0 }, + { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A, + 0, + 0, 0 }, + { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B, + 0, + 0, 0 }, + { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C, + 0, + 0, 0 }, + { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D, + 0, + 0, 0 }, + { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E, + 0, + 0, 0 }, + { 0, 0, 0, 0, + 0, + 0, 0 } +}; + +MODULE_DEVICE_TABLE(pci, esas2r_pci_table); + +static int +esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id); + +static void +esas2r_remove(struct pci_dev *pcid); + +static struct pci_driver + esas2r_pci_driver = { + .name = ESAS2R_DRVR_NAME, + .id_table = esas2r_pci_table, + .probe = esas2r_probe, + .remove = esas2r_remove, + .suspend = esas2r_suspend, + .resume = esas2r_resume, +}; + +static int esas2r_probe(struct pci_dev *pcid, + const struct pci_device_id *id) +{ + struct Scsi_Host *host = NULL; + struct esas2r_adapter *a; + int err; + + size_t host_alloc_size = sizeof(struct esas2r_adapter) + + ((num_requests) + + 1) * sizeof(struct esas2r_request); + + esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev), + "esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x", + pcid->vendor, + pcid->device, + pcid->subsystem_vendor, + pcid->subsystem_device); + + esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), + "before pci_enable_device() " + "enable_cnt: %d", + pcid->enable_cnt.counter); + + err = pci_enable_device(pcid); + if (err != 0) { + esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev), + "pci_enable_device() FAIL (%d)", + err); + return -ENODEV; + } + + esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), + "pci_enable_device() OK"); + esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), + "after pci_device_enable() enable_cnt: %d", + pcid->enable_cnt.counter); + + host = scsi_host_alloc(&driver_template, host_alloc_size); + if (host == NULL) { + esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL"); + return -ENODEV; + } + + memset(host->hostdata, 0, host_alloc_size); + + a = (struct esas2r_adapter *)host->hostdata; + + esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host); + + /* override max LUN and max target id */ + + host->max_id = ESAS2R_MAX_ID + 1; + host->max_lun = 255; + + /* we can handle 16-byte CDbs */ + + host->max_cmd_len = 16; + + host->can_queue = can_queue; + host->cmd_per_lun = cmd_per_lun; + host->this_id = host->max_id + 1; + host->max_channel = 0; + host->unique_id = found_adapters; + host->sg_tablesize = sg_tablesize; + host->max_sectors = esas2r_max_sectors; + + /* set to bus master for BIOses that don't do it for us */ + + esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called"); + + pci_set_master(pcid); + + if (!esas2r_init_adapter(host, pcid, found_adapters)) { + esas2r_log(ESAS2R_LOG_CRIT, + "unable to initialize device at PCI bus %x:%x", + pcid->bus->number, + pcid->devfn); + + esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), + "scsi_host_put() called"); + + scsi_host_put(host); + + return 0; + + } + + esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid, + host->hostdata); + + pci_set_drvdata(pcid, host); + + esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called"); + + err = scsi_add_host(host, &pcid->dev); + + if (err) { + esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err); + esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev), + "scsi_add_host() FAIL"); + + esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), + "scsi_host_put() called"); + + scsi_host_put(host); + + esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), + "pci_set_drvdata(%p, NULL) called", + pcid); + + pci_set_drvdata(pcid, NULL); + + return -ENODEV; + } + + + esas2r_fw_event_on(a); + + esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), + "scsi_scan_host() called"); + + scsi_scan_host(host); + + /* Add sysfs binary files */ + if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw)) + esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), + "Failed to create sysfs binary file: fw"); + else + a->sysfs_fw_created = 1; + + if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs)) + esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), + "Failed to create sysfs binary file: fs"); + else + a->sysfs_fs_created = 1; + + if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda)) + esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), + "Failed to create sysfs binary file: vda"); + else + a->sysfs_vda_created = 1; + + if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw)) + esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), + "Failed to create sysfs binary file: hw"); + else + a->sysfs_hw_created = 1; + + if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram)) + esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), + "Failed to create sysfs binary file: live_nvram"); + else + a->sysfs_live_nvram_created = 1; + + if (sysfs_create_bin_file(&host->shost_dev.kobj, + &bin_attr_default_nvram)) + esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), + "Failed to create sysfs binary file: default_nvram"); + else + a->sysfs_default_nvram_created = 1; + + found_adapters++; + + return 0; +} + +static void esas2r_remove(struct pci_dev *pdev) +{ + struct Scsi_Host *host; + int index; + + if (pdev == NULL) { + esas2r_log(ESAS2R_LOG_WARN, "esas2r_remove pdev==NULL"); + return; + } + + host = pci_get_drvdata(pdev); + + if (host == NULL) { + /* + * this can happen if pci_set_drvdata was already called + * to clear the host pointer. if this is the case, we + * are okay; this channel has already been cleaned up. + */ + + return; + } + + esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), + "esas2r_remove(%p) called; " + "host:%p", pdev, + host); + + index = esas2r_cleanup(host); + + if (index < 0) + esas2r_log_dev(ESAS2R_LOG_WARN, &(pdev->dev), + "unknown host in %s", + __func__); + + found_adapters--; + + /* if this was the last adapter, clean up the rest of the driver */ + + if (found_adapters == 0) + esas2r_cleanup(NULL); +} + +static int __init esas2r_init(void) +{ + int i; + + esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); + + /* verify valid parameters */ + + if (can_queue < 1) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: can_queue must be at least 1, value " + "forced."); + can_queue = 1; + } else if (can_queue > 2048) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: can_queue must be no larger than 2048, " + "value forced."); + can_queue = 2048; + } + + if (cmd_per_lun < 1) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: cmd_per_lun must be at least 1, value " + "forced."); + cmd_per_lun = 1; + } else if (cmd_per_lun > 2048) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: cmd_per_lun must be no larger than " + "2048, value forced."); + cmd_per_lun = 2048; + } + + if (sg_tablesize < 32) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: sg_tablesize must be at least 32, " + "value forced."); + sg_tablesize = 32; + } + + if (esas2r_max_sectors < 1) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: esas2r_max_sectors must be at least " + "1, value forced."); + esas2r_max_sectors = 1; + } else if (esas2r_max_sectors > 0xffff) { + esas2r_log(ESAS2R_LOG_WARN, + "warning: esas2r_max_sectors must be no larger " + "than 0xffff, value forced."); + esas2r_max_sectors = 0xffff; + } + + sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1); + + if (sgl_page_size < SGL_PG_SZ_MIN) + sgl_page_size = SGL_PG_SZ_MIN; + else if (sgl_page_size > SGL_PG_SZ_MAX) + sgl_page_size = SGL_PG_SZ_MAX; + + if (num_sg_lists < NUM_SGL_MIN) + num_sg_lists = NUM_SGL_MIN; + else if (num_sg_lists > NUM_SGL_MAX) + num_sg_lists = NUM_SGL_MAX; + + if (num_requests < NUM_REQ_MIN) + num_requests = NUM_REQ_MIN; + else if (num_requests > NUM_REQ_MAX) + num_requests = NUM_REQ_MAX; + + if (num_ae_requests < NUM_AE_MIN) + num_ae_requests = NUM_AE_MIN; + else if (num_ae_requests > NUM_AE_MAX) + num_ae_requests = NUM_AE_MAX; + + /* set up other globals */ + + for (i = 0; i < MAX_ADAPTERS; i++) + esas2r_adapters[i] = NULL; + + /* initialize */ + + driver_template.module = THIS_MODULE; + + if (pci_register_driver(&esas2r_pci_driver) != 0) + esas2r_log(ESAS2R_LOG_CRIT, "pci_register_driver FAILED"); + else + esas2r_log(ESAS2R_LOG_INFO, "pci_register_driver() OK"); + + if (!found_adapters) { + pci_unregister_driver(&esas2r_pci_driver); + esas2r_cleanup(NULL); + + esas2r_log(ESAS2R_LOG_CRIT, + "driver will not be loaded because no ATTO " + "%s devices were found", + ESAS2R_DRVR_NAME); + return -1; + } else { + esas2r_log(ESAS2R_LOG_INFO, "found %d adapters", + found_adapters); + } + + return 0; +} + +/* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */ +static const struct file_operations esas2r_proc_fops = { + .compat_ioctl = esas2r_proc_ioctl, + .unlocked_ioctl = esas2r_proc_ioctl, +}; + +static struct Scsi_Host *esas2r_proc_host; +static int esas2r_proc_major; + +long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) +{ + return esas2r_ioctl_handler(esas2r_proc_host->hostdata, + (int)cmd, (void __user *)arg); +} + +static void __exit esas2r_exit(void) +{ + esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); + + if (esas2r_proc_major > 0) { + esas2r_log(ESAS2R_LOG_INFO, "unregister proc"); + + remove_proc_entry(ATTONODE_NAME, + esas2r_proc_host->hostt->proc_dir); + unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME); + + esas2r_proc_major = 0; + } + + esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called"); + + pci_unregister_driver(&esas2r_pci_driver); +} + +int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; + + struct esas2r_target *t; + int dev_count = 0; + + esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no); + + seq_printf(m, ESAS2R_LONGNAME "\n" + "Driver version: "ESAS2R_VERSION_STR "\n" + "Flash version: %s\n" + "Firmware version: %s\n" + "Copyright "ESAS2R_COPYRIGHT_YEARS "\n" + "http://www.attotech.com\n" + "\n", + a->flash_rev, + a->fw_rev[0] ? a->fw_rev : "(none)"); + + + seq_printf(m, "Adapter information:\n" + "--------------------\n" + "Model: %s\n" + "SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n", + esas2r_get_model_name(a), + a->nvram->sas_addr[0], + a->nvram->sas_addr[1], + a->nvram->sas_addr[2], + a->nvram->sas_addr[3], + a->nvram->sas_addr[4], + a->nvram->sas_addr[5], + a->nvram->sas_addr[6], + a->nvram->sas_addr[7]); + + seq_puts(m, "\n" + "Discovered devices:\n" + "\n" + " # Target ID\n" + "---------------\n"); + + for (t = a->targetdb; t < a->targetdb_end; t++) + if (t->buffered_target_state == TS_PRESENT) { + seq_printf(m, " %3d %3d\n", + ++dev_count, + (u16)(uintptr_t)(t - a->targetdb)); + } + + if (dev_count == 0) + seq_puts(m, "none\n"); + + seq_puts(m, "\n"); + return 0; + +} + +int esas2r_release(struct Scsi_Host *sh) +{ + esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), + "esas2r_release() called"); + + esas2r_cleanup(sh); + if (sh->irq) + free_irq(sh->irq, NULL); + scsi_unregister(sh); + return 0; +} + +const char *esas2r_info(struct Scsi_Host *sh) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; + static char esas2r_info_str[512]; + + esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), + "esas2r_info() called"); + + /* + * if we haven't done so already, register as a char driver + * and stick a node under "/proc/scsi/esas2r/ATTOnode" + */ + + if (esas2r_proc_major <= 0) { + esas2r_proc_host = sh; + + esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME, + &esas2r_proc_fops); + + esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev), + "register_chrdev (major %d)", + esas2r_proc_major); + + if (esas2r_proc_major > 0) { + struct proc_dir_entry *pde; + + pde = proc_create(ATTONODE_NAME, 0, + sh->hostt->proc_dir, + &esas2r_proc_fops); + + if (!pde) { + esas2r_log_dev(ESAS2R_LOG_WARN, + &(sh->shost_gendev), + "failed to create_proc_entry"); + esas2r_proc_major = -1; + } + } + } + + sprintf(esas2r_info_str, + ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)" + " driver version: "ESAS2R_VERSION_STR " firmware version: " + "%s\n", + a->pcid->bus->number, a->pcid->devfn, a->pcid->irq, + a->fw_rev[0] ? a->fw_rev : "(none)"); + + return esas2r_info_str; +} + +/* Callback for building a request scatter/gather list */ +static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr) +{ + u32 len; + + if (likely(sgc->cur_offset == sgc->exp_offset)) { + /* + * the normal case: caller used all bytes from previous call, so + * expected offset is the same as the current offset. + */ + + if (sgc->sgel_count < sgc->num_sgel) { + /* retrieve next segment, except for first time */ + if (sgc->exp_offset > (u8 *)0) { + /* advance current segment */ + sgc->cur_sgel = sg_next(sgc->cur_sgel); + ++(sgc->sgel_count); + } + + + len = sg_dma_len(sgc->cur_sgel); + (*addr) = sg_dma_address(sgc->cur_sgel); + + /* save the total # bytes returned to caller so far */ + sgc->exp_offset += len; + + } else { + len = 0; + } + } else if (sgc->cur_offset < sgc->exp_offset) { + /* + * caller did not use all bytes from previous call. need to + * compute the address based on current segment. + */ + + len = sg_dma_len(sgc->cur_sgel); + (*addr) = sg_dma_address(sgc->cur_sgel); + + sgc->exp_offset -= len; + + /* calculate PA based on prev segment address and offsets */ + *addr = *addr + + (sgc->cur_offset - sgc->exp_offset); + + sgc->exp_offset += len; + + /* re-calculate length based on offset */ + len = lower_32_bits( + sgc->exp_offset - sgc->cur_offset); + } else { /* if ( sgc->cur_offset > sgc->exp_offset ) */ + /* + * we don't expect the caller to skip ahead. + * cur_offset will never exceed the len we return + */ + len = 0; + } + + return len; +} + +int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) +{ + struct esas2r_adapter *a = + (struct esas2r_adapter *)cmd->device->host->hostdata; + struct esas2r_request *rq; + struct esas2r_sg_context sgc; + unsigned bufflen; + + /* Assume success, if it fails we will fix the result later. */ + cmd->result = DID_OK << 16; + + if (unlikely(a->flags & AF_DEGRADED_MODE)) { + cmd->result = DID_NO_CONNECT << 16; + cmd->scsi_done(cmd); + return 0; + } + + rq = esas2r_alloc_request(a); + if (unlikely(rq == NULL)) { + esas2r_debug("esas2r_alloc_request failed"); + return SCSI_MLQUEUE_HOST_BUSY; + } + + rq->cmd = cmd; + bufflen = scsi_bufflen(cmd); + + if (likely(bufflen != 0)) { + if (cmd->sc_data_direction == DMA_TO_DEVICE) + rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD); + else if (cmd->sc_data_direction == DMA_FROM_DEVICE) + rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD); + } + + memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len); + rq->vrq->scsi.length = cpu_to_le32(bufflen); + rq->target_id = cmd->device->id; + rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); + rq->sense_buf = cmd->sense_buffer; + rq->sense_len = SCSI_SENSE_BUFFERSIZE; + + esas2r_sgc_init(&sgc, a, rq, NULL); + + sgc.length = bufflen; + sgc.cur_offset = NULL; + + sgc.cur_sgel = scsi_sglist(cmd); + sgc.exp_offset = NULL; + sgc.num_sgel = scsi_dma_map(cmd); + sgc.sgel_count = 0; + + if (unlikely(sgc.num_sgel < 0)) { + esas2r_free_request(a, rq); + return SCSI_MLQUEUE_HOST_BUSY; + } + + sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc; + + if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) { + scsi_dma_unmap(cmd); + esas2r_free_request(a, rq); + return SCSI_MLQUEUE_HOST_BUSY; + } + + esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id, + (int)cmd->device->lun); + + esas2r_start_request(a, rq); + + return 0; +} + +static void complete_task_management_request(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + (*rq->task_management_status_ptr) = rq->req_stat; + esas2r_free_request(a, rq); +} + +/** + * Searches the specified queue for the specified queue for the command + * to abort. + * + * @param [in] a + * @param [in] abort_request + * @param [in] cmd + * t + * @return 0 on failure, 1 if command was not found, 2 if command was found + */ +static int esas2r_check_active_queue(struct esas2r_adapter *a, + struct esas2r_request **abort_request, + struct scsi_cmnd *cmd, + struct list_head *queue) +{ + bool found = false; + struct esas2r_request *ar = *abort_request; + struct esas2r_request *rq; + struct list_head *element, *next; + + list_for_each_safe(element, next, queue) { + + rq = list_entry(element, struct esas2r_request, req_list); + + if (rq->cmd == cmd) { + + /* Found the request. See what to do with it. */ + if (queue == &a->active_list) { + /* + * We are searching the active queue, which + * means that we need to send an abort request + * to the firmware. + */ + ar = esas2r_alloc_request(a); + if (ar == NULL) { + esas2r_log_dev(ESAS2R_LOG_WARN, + &(a->host->shost_gendev), + "unable to allocate an abort request for cmd %p", + cmd); + return 0; /* Failure */ + } + + /* + * Task management request must be formatted + * with a lock held. + */ + ar->sense_len = 0; + ar->vrq->scsi.length = 0; + ar->target_id = rq->target_id; + ar->vrq->scsi.flags |= cpu_to_le32( + (u8)le32_to_cpu(rq->vrq->scsi.flags)); + + memset(ar->vrq->scsi.cdb, 0, + sizeof(ar->vrq->scsi.cdb)); + + ar->vrq->scsi.flags |= cpu_to_le32( + FCP_CMND_TRM); + ar->vrq->scsi.u.abort_handle = + rq->vrq->scsi.handle; + } else { + /* + * The request is pending but not active on + * the firmware. Just free it now and we'll + * report the successful abort below. + */ + list_del_init(&rq->req_list); + esas2r_free_request(a, rq); + } + + found = true; + break; + } + + } + + if (!found) + return 1; /* Not found */ + + return 2; /* found */ + + +} + +int esas2r_eh_abort(struct scsi_cmnd *cmd) +{ + struct esas2r_adapter *a = + (struct esas2r_adapter *)cmd->device->host->hostdata; + struct esas2r_request *abort_request = NULL; + unsigned long flags; + struct list_head *queue; + int result; + + esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd); + + if (a->flags & AF_DEGRADED_MODE) { + cmd->result = DID_ABORT << 16; + + scsi_set_resid(cmd, 0); + + cmd->scsi_done(cmd); + + return 0; + } + + spin_lock_irqsave(&a->queue_lock, flags); + + /* + * Run through the defer and active queues looking for the request + * to abort. + */ + + queue = &a->defer_list; + +check_active_queue: + + result = esas2r_check_active_queue(a, &abort_request, cmd, queue); + + if (!result) { + spin_unlock_irqrestore(&a->queue_lock, flags); + return FAILED; + } else if (result == 2 && (queue == &a->defer_list)) { + queue = &a->active_list; + goto check_active_queue; + } + + spin_unlock_irqrestore(&a->queue_lock, flags); + + if (abort_request) { + u8 task_management_status = RS_PENDING; + + /* + * the request is already active, so we need to tell + * the firmware to abort it and wait for the response. + */ + + abort_request->comp_cb = complete_task_management_request; + abort_request->task_management_status_ptr = + &task_management_status; + + esas2r_start_request(a, abort_request); + + if (atomic_read(&a->disable_cnt) == 0) + esas2r_do_deferred_processes(a); + + while (task_management_status == RS_PENDING) + msleep(10); + + /* + * Once we get here, the original request will have been + * completed by the firmware and the abort request will have + * been cleaned up. we're done! + */ + + return SUCCESS; + } + + /* + * If we get here, either we found the inactive request and + * freed it, or we didn't find it at all. Either way, success! + */ + + cmd->result = DID_ABORT << 16; + + scsi_set_resid(cmd, 0); + + cmd->scsi_done(cmd); + + return SUCCESS; +} + +static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset) +{ + struct esas2r_adapter *a = + (struct esas2r_adapter *)cmd->device->host->hostdata; + + if (a->flags & AF_DEGRADED_MODE) + return FAILED; + + if (host_reset) + esas2r_reset_adapter(a); + else + esas2r_reset_bus(a); + + /* above call sets the AF_OS_RESET flag. wait for it to clear. */ + + while (a->flags & AF_OS_RESET) { + msleep(10); + + if (a->flags & AF_DEGRADED_MODE) + return FAILED; + } + + if (a->flags & AF_DEGRADED_MODE) + return FAILED; + + return SUCCESS; +} + +int esas2r_host_reset(struct scsi_cmnd *cmd) +{ + esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd); + + return esas2r_host_bus_reset(cmd, true); +} + +int esas2r_bus_reset(struct scsi_cmnd *cmd) +{ + esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd); + + return esas2r_host_bus_reset(cmd, false); +} + +static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset) +{ + struct esas2r_adapter *a = + (struct esas2r_adapter *)cmd->device->host->hostdata; + struct esas2r_request *rq; + u8 task_management_status = RS_PENDING; + bool completed; + + if (a->flags & AF_DEGRADED_MODE) + return FAILED; + +retry: + rq = esas2r_alloc_request(a); + if (rq == NULL) { + if (target_reset) { + esas2r_log(ESAS2R_LOG_CRIT, + "unable to allocate a request for a " + "target reset (%d)!", + cmd->device->id); + } else { + esas2r_log(ESAS2R_LOG_CRIT, + "unable to allocate a request for a " + "device reset (%d:%d)!", + cmd->device->id, + cmd->device->lun); + } + + + return FAILED; + } + + rq->target_id = cmd->device->id; + rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); + rq->req_stat = RS_PENDING; + + rq->comp_cb = complete_task_management_request; + rq->task_management_status_ptr = &task_management_status; + + if (target_reset) { + esas2r_debug("issuing target reset (%p) to id %d", rq, + cmd->device->id); + completed = esas2r_send_task_mgmt(a, rq, 0x20); + } else { + esas2r_debug("issuing device reset (%p) to id %d lun %d", rq, + cmd->device->id, cmd->device->lun); + completed = esas2r_send_task_mgmt(a, rq, 0x10); + } + + if (completed) { + /* Task management cmd completed right away, need to free it. */ + + esas2r_free_request(a, rq); + } else { + /* + * Wait for firmware to complete the request. Completion + * callback will free it. + */ + while (task_management_status == RS_PENDING) + msleep(10); + } + + if (a->flags & AF_DEGRADED_MODE) + return FAILED; + + if (task_management_status == RS_BUSY) { + /* + * Busy, probably because we are flashing. Wait a bit and + * try again. + */ + msleep(100); + goto retry; + } + + return SUCCESS; +} + +int esas2r_device_reset(struct scsi_cmnd *cmd) +{ + esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd); + + return esas2r_dev_targ_reset(cmd, false); + +} + +int esas2r_target_reset(struct scsi_cmnd *cmd) +{ + esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd); + + return esas2r_dev_targ_reset(cmd, true); +} + +int esas2r_change_queue_depth(struct scsi_device *dev, int depth, int reason) +{ + esas2r_log(ESAS2R_LOG_INFO, "change_queue_depth %p, %d", dev, depth); + + scsi_adjust_queue_depth(dev, scsi_get_tag_type(dev), depth); + + return dev->queue_depth; +} + +int esas2r_change_queue_type(struct scsi_device *dev, int type) +{ + esas2r_log(ESAS2R_LOG_INFO, "change_queue_type %p, %d", dev, type); + + if (dev->tagged_supported) { + scsi_set_tag_type(dev, type); + + if (type) + scsi_activate_tcq(dev, dev->queue_depth); + else + scsi_deactivate_tcq(dev, dev->queue_depth); + } else { + type = 0; + } + + return type; +} + +int esas2r_slave_alloc(struct scsi_device *dev) +{ + return 0; +} + +int esas2r_slave_configure(struct scsi_device *dev) +{ + esas2r_log_dev(ESAS2R_LOG_INFO, &(dev->sdev_gendev), + "esas2r_slave_configure()"); + + if (dev->tagged_supported) { + scsi_set_tag_type(dev, MSG_SIMPLE_TAG); + scsi_activate_tcq(dev, cmd_per_lun); + } else { + scsi_set_tag_type(dev, 0); + scsi_deactivate_tcq(dev, cmd_per_lun); + } + + return 0; +} + +void esas2r_slave_destroy(struct scsi_device *dev) +{ + esas2r_log_dev(ESAS2R_LOG_INFO, &(dev->sdev_gendev), + "esas2r_slave_destroy()"); +} + +void esas2r_log_request_failure(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + u8 reqstatus = rq->req_stat; + + if (reqstatus == RS_SUCCESS) + return; + + if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { + if (reqstatus == RS_SCSI_ERROR) { + if (rq->func_rsp.scsi_rsp.sense_len >= 13) { + esas2r_log(ESAS2R_LOG_WARN, + "request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x", + rq->sense_buf[2], rq->sense_buf[12], + rq->sense_buf[13], + rq->vrq->scsi.cdb[0]); + } else { + esas2r_log(ESAS2R_LOG_WARN, + "request failure - SCSI error CDB:%x\n", + rq->vrq->scsi.cdb[0]); + } + } else if ((rq->vrq->scsi.cdb[0] != INQUIRY + && rq->vrq->scsi.cdb[0] != REPORT_LUNS) + || (reqstatus != RS_SEL + && reqstatus != RS_SEL2)) { + if ((reqstatus == RS_UNDERRUN) && + (rq->vrq->scsi.cdb[0] == INQUIRY)) { + /* Don't log inquiry underruns */ + } else { + esas2r_log(ESAS2R_LOG_WARN, + "request failure - cdb:%x reqstatus:%d target:%d", + rq->vrq->scsi.cdb[0], reqstatus, + rq->target_id); + } + } + } +} + +void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq) +{ + u32 starttime; + u32 timeout; + + starttime = jiffies_to_msecs(jiffies); + timeout = rq->timeout ? rq->timeout : 5000; + + while (true) { + esas2r_polled_interrupt(a); + + if (rq->req_stat != RS_STARTED) + break; + + schedule_timeout_interruptible(msecs_to_jiffies(100)); + + if ((jiffies_to_msecs(jiffies) - starttime) > timeout) { + esas2r_hdebug("request TMO"); + esas2r_bugon(); + + rq->req_stat = RS_TIMEOUT; + + esas2r_local_reset_adapter(a); + return; + } + } +} + +u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo) +{ + u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1); + u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE; + + if (a->window_base != base) { + esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP, + base | MVRPW1R_ENABLE); + esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP); + a->window_base = base; + } + + return offset; +} + +/* Read a block of data from chip memory */ +bool esas2r_read_mem_block(struct esas2r_adapter *a, + void *to, + u32 from, + u32 size) +{ + u8 *end = (u8 *)to; + + while (size) { + u32 len; + u32 offset; + u32 iatvr; + + iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE); + + esas2r_map_data_window(a, iatvr); + + offset = from & (MW_DATA_WINDOW_SIZE - 1); + len = size; + + if (len > MW_DATA_WINDOW_SIZE - offset) + len = MW_DATA_WINDOW_SIZE - offset; + + from += len; + size -= len; + + while (len--) { + *end++ = esas2r_read_data_byte(a, offset); + offset++; + } + } + + return true; +} + +void esas2r_nuxi_mgt_data(u8 function, void *data) +{ + struct atto_vda_grp_info *g; + struct atto_vda_devinfo *d; + struct atto_vdapart_info *p; + struct atto_vda_dh_info *h; + struct atto_vda_metrics_info *m; + struct atto_vda_schedule_info *s; + struct atto_vda_buzzer_info *b; + u8 i; + + switch (function) { + case VDAMGT_BUZZER_INFO: + case VDAMGT_BUZZER_SET: + + b = (struct atto_vda_buzzer_info *)data; + + b->duration = le32_to_cpu(b->duration); + break; + + case VDAMGT_SCHEDULE_INFO: + case VDAMGT_SCHEDULE_EVENT: + + s = (struct atto_vda_schedule_info *)data; + + s->id = le32_to_cpu(s->id); + + break; + + case VDAMGT_DEV_INFO: + case VDAMGT_DEV_CLEAN: + case VDAMGT_DEV_PT_INFO: + case VDAMGT_DEV_FEATURES: + case VDAMGT_DEV_PT_FEATURES: + case VDAMGT_DEV_OPERATION: + + d = (struct atto_vda_devinfo *)data; + + d->capacity = le64_to_cpu(d->capacity); + d->block_size = le32_to_cpu(d->block_size); + d->ses_dev_index = le16_to_cpu(d->ses_dev_index); + d->target_id = le16_to_cpu(d->target_id); + d->lun = le16_to_cpu(d->lun); + d->features = le16_to_cpu(d->features); + break; + + case VDAMGT_GRP_INFO: + case VDAMGT_GRP_CREATE: + case VDAMGT_GRP_DELETE: + case VDAMGT_ADD_STORAGE: + case VDAMGT_MEMBER_ADD: + case VDAMGT_GRP_COMMIT: + case VDAMGT_GRP_REBUILD: + case VDAMGT_GRP_COMMIT_INIT: + case VDAMGT_QUICK_RAID: + case VDAMGT_GRP_FEATURES: + case VDAMGT_GRP_COMMIT_INIT_AUTOMAP: + case VDAMGT_QUICK_RAID_INIT_AUTOMAP: + case VDAMGT_SPARE_LIST: + case VDAMGT_SPARE_ADD: + case VDAMGT_SPARE_REMOVE: + case VDAMGT_LOCAL_SPARE_ADD: + case VDAMGT_GRP_OPERATION: + + g = (struct atto_vda_grp_info *)data; + + g->capacity = le64_to_cpu(g->capacity); + g->block_size = le32_to_cpu(g->block_size); + g->interleave = le32_to_cpu(g->interleave); + g->features = le16_to_cpu(g->features); + + for (i = 0; i < 32; i++) + g->members[i] = le16_to_cpu(g->members[i]); + + break; + + case VDAMGT_PART_INFO: + case VDAMGT_PART_MAP: + case VDAMGT_PART_UNMAP: + case VDAMGT_PART_AUTOMAP: + case VDAMGT_PART_SPLIT: + case VDAMGT_PART_MERGE: + + p = (struct atto_vdapart_info *)data; + + p->part_size = le64_to_cpu(p->part_size); + p->start_lba = le32_to_cpu(p->start_lba); + p->block_size = le32_to_cpu(p->block_size); + p->target_id = le16_to_cpu(p->target_id); + break; + + case VDAMGT_DEV_HEALTH_REQ: + + h = (struct atto_vda_dh_info *)data; + + h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt); + h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt); + break; + + case VDAMGT_DEV_METRICS: + + m = (struct atto_vda_metrics_info *)data; + + for (i = 0; i < 32; i++) + m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]); + + break; + + default: + break; + } +} + +void esas2r_nuxi_cfg_data(u8 function, void *data) +{ + struct atto_vda_cfg_init *ci; + + switch (function) { + case VDA_CFG_INIT: + case VDA_CFG_GET_INIT: + case VDA_CFG_GET_INIT2: + + ci = (struct atto_vda_cfg_init *)data; + + ci->date_time.year = le16_to_cpu(ci->date_time.year); + ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size); + ci->vda_version = le32_to_cpu(ci->vda_version); + ci->epoch_time = le32_to_cpu(ci->epoch_time); + ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel); + ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend); + break; + + default: + break; + } +} + +void esas2r_nuxi_ae_data(union atto_vda_ae *ae) +{ + struct atto_vda_ae_raid *r = &ae->raid; + struct atto_vda_ae_lu *l = &ae->lu; + + switch (ae->hdr.bytype) { + case VDAAE_HDR_TYPE_RAID: + + r->dwflags = le32_to_cpu(r->dwflags); + break; + + case VDAAE_HDR_TYPE_LU: + + l->dwevent = le32_to_cpu(l->dwevent); + l->wphys_target_id = le16_to_cpu(l->wphys_target_id); + l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id); + + if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id) + + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) { + l->id.tgtlun_raid.dwinterleave + = le32_to_cpu(l->id.tgtlun_raid.dwinterleave); + l->id.tgtlun_raid.dwblock_size + = le32_to_cpu(l->id.tgtlun_raid.dwblock_size); + } + + break; + + case VDAAE_HDR_TYPE_DISK: + default: + break; + } +} + +void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq) +{ + unsigned long flags; + + esas2r_rq_destroy_request(rq, a); + spin_lock_irqsave(&a->request_lock, flags); + list_add(&rq->comp_list, &a->avail_request); + spin_unlock_irqrestore(&a->request_lock, flags); +} + +struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a) +{ + struct esas2r_request *rq; + unsigned long flags; + + spin_lock_irqsave(&a->request_lock, flags); + + if (unlikely(list_empty(&a->avail_request))) { + spin_unlock_irqrestore(&a->request_lock, flags); + return NULL; + } + + rq = list_first_entry(&a->avail_request, struct esas2r_request, + comp_list); + list_del(&rq->comp_list); + spin_unlock_irqrestore(&a->request_lock, flags); + esas2r_rq_init_request(rq, a); + + return rq; + +} + +void esas2r_complete_request_cb(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + esas2r_debug("completing request %p\n", rq); + + scsi_dma_unmap(rq->cmd); + + if (unlikely(rq->req_stat != RS_SUCCESS)) { + esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id, + rq->req_stat, + rq->func_rsp.scsi_rsp.scsi_stat, + rq->cmd); + + rq->cmd->result = + ((esas2r_req_status_to_error(rq->req_stat) << 16) + | (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK)); + + if (rq->req_stat == RS_UNDERRUN) + scsi_set_resid(rq->cmd, + le32_to_cpu(rq->func_rsp.scsi_rsp. + residual_length)); + else + scsi_set_resid(rq->cmd, 0); + } + + rq->cmd->scsi_done(rq->cmd); + + esas2r_free_request(a, rq); +} + +/* Run tasklet to handle stuff outside of interrupt context. */ +void esas2r_adapter_tasklet(unsigned long context) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)context; + + if (unlikely(a->flags2 & AF2_TIMER_TICK)) { + esas2r_lock_clear_flags(&a->flags2, AF2_TIMER_TICK); + esas2r_timer_tick(a); + } + + if (likely(a->flags2 & AF2_INT_PENDING)) { + esas2r_lock_clear_flags(&a->flags2, AF2_INT_PENDING); + esas2r_adapter_interrupt(a); + } + + if (esas2r_is_tasklet_pending(a)) + esas2r_do_tasklet_tasks(a); + + if (esas2r_is_tasklet_pending(a) + || (a->flags2 & AF2_INT_PENDING) + || (a->flags2 & AF2_TIMER_TICK)) { + esas2r_lock_clear_flags(&a->flags, AF_TASKLET_SCHEDULED); + esas2r_schedule_tasklet(a); + } else { + esas2r_lock_clear_flags(&a->flags, AF_TASKLET_SCHEDULED); + } +} + +static void esas2r_timer_callback(unsigned long context); + +void esas2r_kickoff_timer(struct esas2r_adapter *a) +{ + init_timer(&a->timer); + + a->timer.function = esas2r_timer_callback; + a->timer.data = (unsigned long)a; + a->timer.expires = jiffies + + msecs_to_jiffies(100); + + add_timer(&a->timer); +} + +static void esas2r_timer_callback(unsigned long context) +{ + struct esas2r_adapter *a = (struct esas2r_adapter *)context; + + esas2r_lock_set_flags(&a->flags2, AF2_TIMER_TICK); + + esas2r_schedule_tasklet(a); + + esas2r_kickoff_timer(a); +} + +/* + * Firmware events need to be handled outside of interrupt context + * so we schedule a delayed_work to handle them. + */ + +static void +esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event) +{ + unsigned long flags; + struct esas2r_adapter *a = fw_event->a; + + spin_lock_irqsave(&a->fw_event_lock, flags); + list_del(&fw_event->list); + kfree(fw_event); + spin_unlock_irqrestore(&a->fw_event_lock, flags); +} + +void +esas2r_fw_event_off(struct esas2r_adapter *a) +{ + unsigned long flags; + + spin_lock_irqsave(&a->fw_event_lock, flags); + a->fw_events_off = 1; + spin_unlock_irqrestore(&a->fw_event_lock, flags); +} + +void +esas2r_fw_event_on(struct esas2r_adapter *a) +{ + unsigned long flags; + + spin_lock_irqsave(&a->fw_event_lock, flags); + a->fw_events_off = 0; + spin_unlock_irqrestore(&a->fw_event_lock, flags); +} + +static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id) +{ + int ret; + struct scsi_device *scsi_dev; + + scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); + + if (scsi_dev) { + esas2r_log_dev( + ESAS2R_LOG_WARN, + &(scsi_dev-> + sdev_gendev), + "scsi device already exists at id %d", target_id); + + scsi_device_put(scsi_dev); + } else { + esas2r_log_dev( + ESAS2R_LOG_INFO, + &(a->host-> + shost_gendev), + "scsi_add_device() called for 0:%d:0", + target_id); + + ret = scsi_add_device(a->host, 0, target_id, 0); + if (ret) { + esas2r_log_dev( + ESAS2R_LOG_CRIT, + &(a->host-> + shost_gendev), + "scsi_add_device failed with %d for id %d", + ret, target_id); + } + } +} + +static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id) +{ + struct scsi_device *scsi_dev; + + scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); + + if (scsi_dev) { + scsi_device_set_state(scsi_dev, SDEV_OFFLINE); + + esas2r_log_dev( + ESAS2R_LOG_INFO, + &(scsi_dev-> + sdev_gendev), + "scsi_remove_device() called for 0:%d:0", + target_id); + + scsi_remove_device(scsi_dev); + + esas2r_log_dev( + ESAS2R_LOG_INFO, + &(scsi_dev-> + sdev_gendev), + "scsi_device_put() called"); + + scsi_device_put(scsi_dev); + } else { + esas2r_log_dev( + ESAS2R_LOG_WARN, + &(a->host->shost_gendev), + "no target found at id %d", + target_id); + } +} + +/* + * Sends a firmware asynchronous event to anyone who happens to be + * listening on the defined ATTO VDA event ports. + */ +static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event) +{ + struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data; + char *type; + + switch (ae->vda_ae.hdr.bytype) { + case VDAAE_HDR_TYPE_RAID: + type = "RAID group state change"; + break; + + case VDAAE_HDR_TYPE_LU: + type = "Mapped destination LU change"; + break; + + case VDAAE_HDR_TYPE_DISK: + type = "Physical disk inventory change"; + break; + + case VDAAE_HDR_TYPE_RESET: + type = "Firmware reset"; + break; + + case VDAAE_HDR_TYPE_LOG_INFO: + type = "Event Log message (INFO level)"; + break; + + case VDAAE_HDR_TYPE_LOG_WARN: + type = "Event Log message (WARN level)"; + break; + + case VDAAE_HDR_TYPE_LOG_CRIT: + type = "Event Log message (CRIT level)"; + break; + + case VDAAE_HDR_TYPE_LOG_FAIL: + type = "Event Log message (FAIL level)"; + break; + + case VDAAE_HDR_TYPE_NVC: + type = "NVCache change"; + break; + + case VDAAE_HDR_TYPE_TLG_INFO: + type = "Time stamped log message (INFO level)"; + break; + + case VDAAE_HDR_TYPE_TLG_WARN: + type = "Time stamped log message (WARN level)"; + break; + + case VDAAE_HDR_TYPE_TLG_CRIT: + type = "Time stamped log message (CRIT level)"; + break; + + case VDAAE_HDR_TYPE_PWRMGT: + type = "Power management"; + break; + + case VDAAE_HDR_TYPE_MUTE: + type = "Mute button pressed"; + break; + + case VDAAE_HDR_TYPE_DEV: + type = "Device attribute change"; + break; + + default: + type = "Unknown"; + break; + } + + esas2r_log(ESAS2R_LOG_WARN, + "An async event of type \"%s\" was received from the firmware. The event contents are:", + type); + esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae, + ae->vda_ae.hdr.bylength); + +} + +static void +esas2r_firmware_event_work(struct work_struct *work) +{ + struct esas2r_fw_event_work *fw_event = + container_of(work, struct esas2r_fw_event_work, work.work); + + struct esas2r_adapter *a = fw_event->a; + + u16 target_id = *(u16 *)&fw_event->data[0]; + + if (a->fw_events_off) + goto done; + + switch (fw_event->type) { + case fw_event_null: + break; /* do nothing */ + + case fw_event_lun_change: + esas2r_remove_device(a, target_id); + esas2r_add_device(a, target_id); + break; + + case fw_event_present: + esas2r_add_device(a, target_id); + break; + + case fw_event_not_present: + esas2r_remove_device(a, target_id); + break; + + case fw_event_vda_ae: + esas2r_send_ae_event(fw_event); + break; + } + +done: + esas2r_free_fw_event(fw_event); +} + +void esas2r_queue_fw_event(struct esas2r_adapter *a, + enum fw_event_type type, + void *data, + int data_sz) +{ + struct esas2r_fw_event_work *fw_event; + unsigned long flags; + + fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC); + if (!fw_event) { + esas2r_log(ESAS2R_LOG_WARN, + "esas2r_queue_fw_event failed to alloc"); + return; + } + + if (type == fw_event_vda_ae) { + struct esas2r_vda_ae *ae = + (struct esas2r_vda_ae *)fw_event->data; + + ae->signature = ESAS2R_VDA_EVENT_SIG; + ae->bus_number = a->pcid->bus->number; + ae->devfn = a->pcid->devfn; + memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae)); + } else { + memcpy(fw_event->data, data, data_sz); + } + + fw_event->type = type; + fw_event->a = a; + + spin_lock_irqsave(&a->fw_event_lock, flags); + list_add_tail(&fw_event->list, &a->fw_event_list); + INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work); + queue_delayed_work_on( + smp_processor_id(), a->fw_event_q, &fw_event->work, + msecs_to_jiffies(1)); + spin_unlock_irqrestore(&a->fw_event_lock, flags); +} + +void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id, + u8 state) +{ + if (state == TS_LUN_CHANGE) + esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id, + sizeof(targ_id)); + else if (state == TS_PRESENT) + esas2r_queue_fw_event(a, fw_event_present, &targ_id, + sizeof(targ_id)); + else if (state == TS_NOT_PRESENT) + esas2r_queue_fw_event(a, fw_event_not_present, &targ_id, + sizeof(targ_id)); +} + +/* Translate status to a Linux SCSI mid-layer error code */ +int esas2r_req_status_to_error(u8 req_stat) +{ + switch (req_stat) { + case RS_OVERRUN: + case RS_UNDERRUN: + case RS_SUCCESS: + /* + * NOTE: SCSI mid-layer wants a good status for a SCSI error, because + * it will check the scsi_stat value in the completion anyway. + */ + case RS_SCSI_ERROR: + return DID_OK; + + case RS_SEL: + case RS_SEL2: + return DID_NO_CONNECT; + + case RS_RESET: + return DID_RESET; + + case RS_ABORTED: + return DID_ABORT; + + case RS_BUSY: + return DID_BUS_BUSY; + } + + /* everything else is just an error. */ + + return DID_ERROR; +} + +module_init(esas2r_init); +module_exit(esas2r_exit); diff --git a/drivers/scsi/esas2r/esas2r_targdb.c b/drivers/scsi/esas2r/esas2r_targdb.c new file mode 100644 index 000000000000..e540a2fa3d15 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_targdb.c @@ -0,0 +1,306 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_targdb.c + * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +#include "esas2r.h" + +void esas2r_targ_db_initialize(struct esas2r_adapter *a) +{ + struct esas2r_target *t; + + for (t = a->targetdb; t < a->targetdb_end; t++) { + memset(t, 0, sizeof(struct esas2r_target)); + + t->target_state = TS_NOT_PRESENT; + t->buffered_target_state = TS_NOT_PRESENT; + t->new_target_state = TS_INVALID; + } +} + +void esas2r_targ_db_remove_all(struct esas2r_adapter *a, bool notify) +{ + struct esas2r_target *t; + unsigned long flags; + + for (t = a->targetdb; t < a->targetdb_end; t++) { + if (t->target_state != TS_PRESENT) + continue; + + spin_lock_irqsave(&a->mem_lock, flags); + esas2r_targ_db_remove(a, t); + spin_unlock_irqrestore(&a->mem_lock, flags); + + if (notify) { + esas2r_trace("remove id:%d", esas2r_targ_get_id(t, + a)); + esas2r_target_state_changed(a, esas2r_targ_get_id(t, + a), + TS_NOT_PRESENT); + } + } +} + +void esas2r_targ_db_report_changes(struct esas2r_adapter *a) +{ + struct esas2r_target *t; + unsigned long flags; + + esas2r_trace_enter(); + + if (a->flags & AF_DISC_PENDING) { + esas2r_trace_exit(); + return; + } + + for (t = a->targetdb; t < a->targetdb_end; t++) { + u8 state = TS_INVALID; + + spin_lock_irqsave(&a->mem_lock, flags); + if (t->buffered_target_state != t->target_state) + state = t->buffered_target_state = t->target_state; + + spin_unlock_irqrestore(&a->mem_lock, flags); + if (state != TS_INVALID) { + esas2r_trace("targ_db_report_changes:%d", + esas2r_targ_get_id( + t, + a)); + esas2r_trace("state:%d", state); + + esas2r_target_state_changed(a, + esas2r_targ_get_id(t, + a), + state); + } + } + + esas2r_trace_exit(); +} + +struct esas2r_target *esas2r_targ_db_add_raid(struct esas2r_adapter *a, + struct esas2r_disc_context * + dc) +{ + struct esas2r_target *t; + + esas2r_trace_enter(); + + if (dc->curr_virt_id >= ESAS2R_MAX_TARGETS) { + esas2r_bugon(); + esas2r_trace_exit(); + return NULL; + } + + t = a->targetdb + dc->curr_virt_id; + + if (t->target_state == TS_PRESENT) { + esas2r_trace_exit(); + return NULL; + } + + esas2r_hdebug("add RAID %s, T:%d", dc->raid_grp_name, + esas2r_targ_get_id( + t, + a)); + + if (dc->interleave == 0 + || dc->block_size == 0) { + /* these are invalid values, don't create the target entry. */ + + esas2r_hdebug("invalid RAID group dimensions"); + + esas2r_trace_exit(); + + return NULL; + } + + t->block_size = dc->block_size; + t->inter_byte = dc->interleave; + t->inter_block = dc->interleave / dc->block_size; + t->virt_targ_id = dc->curr_virt_id; + t->phys_targ_id = ESAS2R_TARG_ID_INV; + + t->flags &= ~TF_PASS_THRU; + t->flags |= TF_USED; + + t->identifier_len = 0; + + t->target_state = TS_PRESENT; + + return t; +} + +struct esas2r_target *esas2r_targ_db_add_pthru(struct esas2r_adapter *a, + struct esas2r_disc_context *dc, + u8 *ident, + u8 ident_len) +{ + struct esas2r_target *t; + + esas2r_trace_enter(); + + if (dc->curr_virt_id >= ESAS2R_MAX_TARGETS) { + esas2r_bugon(); + esas2r_trace_exit(); + return NULL; + } + + /* see if we found this device before. */ + + t = esas2r_targ_db_find_by_ident(a, ident, ident_len); + + if (t == NULL) { + t = a->targetdb + dc->curr_virt_id; + + if (ident_len > sizeof(t->identifier) + || t->target_state == TS_PRESENT) { + esas2r_trace_exit(); + return NULL; + } + } + + esas2r_hdebug("add PT; T:%d, V:%d, P:%d", esas2r_targ_get_id(t, a), + dc->curr_virt_id, + dc->curr_phys_id); + + t->block_size = 0; + t->inter_byte = 0; + t->inter_block = 0; + t->virt_targ_id = dc->curr_virt_id; + t->phys_targ_id = dc->curr_phys_id; + t->identifier_len = ident_len; + + memcpy(t->identifier, ident, ident_len); + + t->flags |= TF_PASS_THRU | TF_USED; + + t->target_state = TS_PRESENT; + + return t; +} + +void esas2r_targ_db_remove(struct esas2r_adapter *a, struct esas2r_target *t) +{ + esas2r_trace_enter(); + + t->target_state = TS_NOT_PRESENT; + + esas2r_trace("remove id:%d", esas2r_targ_get_id(t, a)); + + esas2r_trace_exit(); +} + +struct esas2r_target *esas2r_targ_db_find_by_sas_addr(struct esas2r_adapter *a, + u64 *sas_addr) +{ + struct esas2r_target *t; + + for (t = a->targetdb; t < a->targetdb_end; t++) + if (t->sas_addr == *sas_addr) + return t; + + return NULL; +} + +struct esas2r_target *esas2r_targ_db_find_by_ident(struct esas2r_adapter *a, + void *identifier, + u8 ident_len) +{ + struct esas2r_target *t; + + for (t = a->targetdb; t < a->targetdb_end; t++) { + if (ident_len == t->identifier_len + && memcmp(&t->identifier[0], identifier, + ident_len) == 0) + return t; + } + + return NULL; +} + +u16 esas2r_targ_db_find_next_present(struct esas2r_adapter *a, u16 target_id) +{ + u16 id = target_id + 1; + + while (id < ESAS2R_MAX_TARGETS) { + struct esas2r_target *t = a->targetdb + id; + + if (t->target_state == TS_PRESENT) + break; + + id++; + } + + return id; +} + +struct esas2r_target *esas2r_targ_db_find_by_virt_id(struct esas2r_adapter *a, + u16 virt_id) +{ + struct esas2r_target *t; + + for (t = a->targetdb; t < a->targetdb_end; t++) { + if (t->target_state != TS_PRESENT) + continue; + + if (t->virt_targ_id == virt_id) + return t; + } + + return NULL; +} + +u16 esas2r_targ_db_get_tgt_cnt(struct esas2r_adapter *a) +{ + u16 devcnt = 0; + struct esas2r_target *t; + unsigned long flags; + + spin_lock_irqsave(&a->mem_lock, flags); + for (t = a->targetdb; t < a->targetdb_end; t++) + if (t->target_state == TS_PRESENT) + devcnt++; + + spin_unlock_irqrestore(&a->mem_lock, flags); + + return devcnt; +} diff --git a/drivers/scsi/esas2r/esas2r_vda.c b/drivers/scsi/esas2r/esas2r_vda.c new file mode 100644 index 000000000000..f8ec6d636846 --- /dev/null +++ b/drivers/scsi/esas2r/esas2r_vda.c @@ -0,0 +1,521 @@ +/* + * linux/drivers/scsi/esas2r/esas2r_vda.c + * esas2r driver VDA firmware interface functions + * + * Copyright (c) 2001-2013 ATTO Technology, Inc. + * (mailto:linuxdrivers@attotech.com) + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * NO WARRANTY + * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + * solely responsible for determining the appropriateness of using and + * distributing the Program and assumes all risks associated with its + * exercise of rights under this Agreement, including but not limited to + * the risks and costs of program errors, damage to or loss of data, + * programs or equipment, and unavailability or interruption of operations. + * + * DISCLAIMER OF LIABILITY + * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + +#include "esas2r.h" + +static u8 esas2r_vdaioctl_versions[] = { + ATTO_VDA_VER_UNSUPPORTED, + ATTO_VDA_FLASH_VER, + ATTO_VDA_VER_UNSUPPORTED, + ATTO_VDA_VER_UNSUPPORTED, + ATTO_VDA_CLI_VER, + ATTO_VDA_VER_UNSUPPORTED, + ATTO_VDA_CFG_VER, + ATTO_VDA_MGT_VER, + ATTO_VDA_GSV_VER +}; + +static void clear_vda_request(struct esas2r_request *rq); + +static void esas2r_complete_vda_ioctl(struct esas2r_adapter *a, + struct esas2r_request *rq); + +/* Prepare a VDA IOCTL request to be sent to the firmware. */ +bool esas2r_process_vda_ioctl(struct esas2r_adapter *a, + struct atto_ioctl_vda *vi, + struct esas2r_request *rq, + struct esas2r_sg_context *sgc) +{ + u32 datalen = 0; + struct atto_vda_sge *firstsg = NULL; + u8 vercnt = (u8)ARRAY_SIZE(esas2r_vdaioctl_versions); + + vi->status = ATTO_STS_SUCCESS; + vi->vda_status = RS_PENDING; + + if (vi->function >= vercnt) { + vi->status = ATTO_STS_INV_FUNC; + return false; + } + + if (vi->version > esas2r_vdaioctl_versions[vi->function]) { + vi->status = ATTO_STS_INV_VERSION; + return false; + } + + if (a->flags & AF_DEGRADED_MODE) { + vi->status = ATTO_STS_DEGRADED; + return false; + } + + if (vi->function != VDA_FUNC_SCSI) + clear_vda_request(rq); + + rq->vrq->scsi.function = vi->function; + rq->interrupt_cb = esas2r_complete_vda_ioctl; + rq->interrupt_cx = vi; + + switch (vi->function) { + case VDA_FUNC_FLASH: + + if (vi->cmd.flash.sub_func != VDA_FLASH_FREAD + && vi->cmd.flash.sub_func != VDA_FLASH_FWRITE + && vi->cmd.flash.sub_func != VDA_FLASH_FINFO) { + vi->status = ATTO_STS_INV_FUNC; + return false; + } + + if (vi->cmd.flash.sub_func != VDA_FLASH_FINFO) + datalen = vi->data_length; + + rq->vrq->flash.length = cpu_to_le32(datalen); + rq->vrq->flash.sub_func = vi->cmd.flash.sub_func; + + memcpy(rq->vrq->flash.data.file.file_name, + vi->cmd.flash.data.file.file_name, + sizeof(vi->cmd.flash.data.file.file_name)); + + firstsg = rq->vrq->flash.data.file.sge; + break; + + case VDA_FUNC_CLI: + + datalen = vi->data_length; + + rq->vrq->cli.cmd_rsp_len = + cpu_to_le32(vi->cmd.cli.cmd_rsp_len); + rq->vrq->cli.length = cpu_to_le32(datalen); + + firstsg = rq->vrq->cli.sge; + break; + + case VDA_FUNC_MGT: + { + u8 *cmdcurr_offset = sgc->cur_offset + - offsetof(struct atto_ioctl_vda, data) + + offsetof(struct atto_ioctl_vda, cmd) + + offsetof(struct atto_ioctl_vda_mgt_cmd, + data); + /* + * build the data payload SGL here first since + * esas2r_sgc_init() will modify the S/G list offset for the + * management SGL (which is built below where the data SGL is + * usually built). + */ + + if (vi->data_length) { + u32 payldlen = 0; + + if (vi->cmd.mgt.mgt_func == VDAMGT_DEV_HEALTH_REQ + || vi->cmd.mgt.mgt_func == VDAMGT_DEV_METRICS) { + rq->vrq->mgt.payld_sglst_offset = + (u8)offsetof(struct atto_vda_mgmt_req, + payld_sge); + + payldlen = vi->data_length; + datalen = vi->cmd.mgt.data_length; + } else if (vi->cmd.mgt.mgt_func == VDAMGT_DEV_INFO2 + || vi->cmd.mgt.mgt_func == + VDAMGT_DEV_INFO2_BYADDR) { + datalen = vi->data_length; + cmdcurr_offset = sgc->cur_offset; + } else { + vi->status = ATTO_STS_INV_PARAM; + return false; + } + + /* Setup the length so building the payload SGL works */ + rq->vrq->mgt.length = cpu_to_le32(datalen); + + if (payldlen) { + rq->vrq->mgt.payld_length = + cpu_to_le32(payldlen); + + esas2r_sgc_init(sgc, a, rq, + rq->vrq->mgt.payld_sge); + sgc->length = payldlen; + + if (!esas2r_build_sg_list(a, rq, sgc)) { + vi->status = ATTO_STS_OUT_OF_RSRC; + return false; + } + } + } else { + datalen = vi->cmd.mgt.data_length; + + rq->vrq->mgt.length = cpu_to_le32(datalen); + } + + /* + * Now that the payload SGL is built, if any, setup to build + * the management SGL. + */ + firstsg = rq->vrq->mgt.sge; + sgc->cur_offset = cmdcurr_offset; + + /* Finish initializing the management request. */ + rq->vrq->mgt.mgt_func = vi->cmd.mgt.mgt_func; + rq->vrq->mgt.scan_generation = vi->cmd.mgt.scan_generation; + rq->vrq->mgt.dev_index = + cpu_to_le32(vi->cmd.mgt.dev_index); + + esas2r_nuxi_mgt_data(rq->vrq->mgt.mgt_func, &vi->cmd.mgt.data); + break; + } + + case VDA_FUNC_CFG: + + if (vi->data_length + || vi->cmd.cfg.data_length == 0) { + vi->status = ATTO_STS_INV_PARAM; + return false; + } + + if (vi->cmd.cfg.cfg_func == VDA_CFG_INIT) { + vi->status = ATTO_STS_INV_FUNC; + return false; + } + + rq->vrq->cfg.sub_func = vi->cmd.cfg.cfg_func; + rq->vrq->cfg.length = cpu_to_le32(vi->cmd.cfg.data_length); + + if (vi->cmd.cfg.cfg_func == VDA_CFG_GET_INIT) { + memcpy(&rq->vrq->cfg.data, + &vi->cmd.cfg.data, + vi->cmd.cfg.data_length); + + esas2r_nuxi_cfg_data(rq->vrq->cfg.sub_func, + &rq->vrq->cfg.data); + } else { + vi->status = ATTO_STS_INV_FUNC; + + return false; + } + + break; + + case VDA_FUNC_GSV: + + vi->cmd.gsv.rsp_len = vercnt; + + memcpy(vi->cmd.gsv.version_info, esas2r_vdaioctl_versions, + vercnt); + + vi->vda_status = RS_SUCCESS; + break; + + default: + + vi->status = ATTO_STS_INV_FUNC; + return false; + } + + if (datalen) { + esas2r_sgc_init(sgc, a, rq, firstsg); + sgc->length = datalen; + + if (!esas2r_build_sg_list(a, rq, sgc)) { + vi->status = ATTO_STS_OUT_OF_RSRC; + return false; + } + } + + esas2r_start_request(a, rq); + + return true; +} + +static void esas2r_complete_vda_ioctl(struct esas2r_adapter *a, + struct esas2r_request *rq) +{ + struct atto_ioctl_vda *vi = (struct atto_ioctl_vda *)rq->interrupt_cx; + + vi->vda_status = rq->req_stat; + + switch (vi->function) { + case VDA_FUNC_FLASH: + + if (vi->cmd.flash.sub_func == VDA_FLASH_FINFO + || vi->cmd.flash.sub_func == VDA_FLASH_FREAD) + vi->cmd.flash.data.file.file_size = + le32_to_cpu(rq->func_rsp.flash_rsp.file_size); + + break; + + case VDA_FUNC_MGT: + + vi->cmd.mgt.scan_generation = + rq->func_rsp.mgt_rsp.scan_generation; + vi->cmd.mgt.dev_index = le16_to_cpu( + rq->func_rsp.mgt_rsp.dev_index); + + if (vi->data_length == 0) + vi->cmd.mgt.data_length = + le32_to_cpu(rq->func_rsp.mgt_rsp.length); + + esas2r_nuxi_mgt_data(rq->vrq->mgt.mgt_func, &vi->cmd.mgt.data); + break; + + case VDA_FUNC_CFG: + + if (vi->cmd.cfg.cfg_func == VDA_CFG_GET_INIT) { + struct atto_ioctl_vda_cfg_cmd *cfg = &vi->cmd.cfg; + struct atto_vda_cfg_rsp *rsp = &rq->func_rsp.cfg_rsp; + + cfg->data_length = + cpu_to_le32(sizeof(struct atto_vda_cfg_init)); + cfg->data.init.vda_version = + le32_to_cpu(rsp->vda_version); + cfg->data.init.fw_build = rsp->fw_build; + + sprintf((char *)&cfg->data.init.fw_release, + "%1d.%02d", + (int)LOBYTE(le16_to_cpu(rsp->fw_release)), + (int)HIBYTE(le16_to_cpu(rsp->fw_release))); + + if (LOWORD(LOBYTE(cfg->data.init.fw_build)) == 'A') + cfg->data.init.fw_version = + cfg->data.init.fw_build; + else + cfg->data.init.fw_version = + cfg->data.init.fw_release; + } else { + esas2r_nuxi_cfg_data(rq->vrq->cfg.sub_func, + &vi->cmd.cfg.data); + } + + break; + + case VDA_FUNC_CLI: + + vi->cmd.cli.cmd_rsp_len = + le32_to_cpu(rq->func_rsp.cli_rsp.cmd_rsp_len); + break; + + default: + + break; + } +} + +/* Build a flash VDA request. */ +void esas2r_build_flash_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u8 sub_func, + u8 cksum, + u32 addr, + u32 length) +{ + struct atto_vda_flash_req *vrq = &rq->vrq->flash; + + clear_vda_request(rq); + + rq->vrq->scsi.function = VDA_FUNC_FLASH; + + if (sub_func == VDA_FLASH_BEGINW + || sub_func == VDA_FLASH_WRITE + || sub_func == VDA_FLASH_READ) + vrq->sg_list_offset = (u8)offsetof(struct atto_vda_flash_req, + data.sge); + + vrq->length = cpu_to_le32(length); + vrq->flash_addr = cpu_to_le32(addr); + vrq->checksum = cksum; + vrq->sub_func = sub_func; +} + +/* Build a VDA management request. */ +void esas2r_build_mgt_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u8 sub_func, + u8 scan_gen, + u16 dev_index, + u32 length, + void *data) +{ + struct atto_vda_mgmt_req *vrq = &rq->vrq->mgt; + + clear_vda_request(rq); + + rq->vrq->scsi.function = VDA_FUNC_MGT; + + vrq->mgt_func = sub_func; + vrq->scan_generation = scan_gen; + vrq->dev_index = cpu_to_le16(dev_index); + vrq->length = cpu_to_le32(length); + + if (vrq->length) { + if (a->flags & AF_LEGACY_SGE_MODE) { + vrq->sg_list_offset = (u8)offsetof( + struct atto_vda_mgmt_req, sge); + + vrq->sge[0].length = cpu_to_le32(SGE_LAST | length); + vrq->sge[0].address = cpu_to_le64( + rq->vrq_md->phys_addr + + sizeof(union atto_vda_req)); + } else { + vrq->sg_list_offset = (u8)offsetof( + struct atto_vda_mgmt_req, prde); + + vrq->prde[0].ctl_len = cpu_to_le32(length); + vrq->prde[0].address = cpu_to_le64( + rq->vrq_md->phys_addr + + sizeof(union atto_vda_req)); + } + } + + if (data) { + esas2r_nuxi_mgt_data(sub_func, data); + + memcpy(&rq->vda_rsp_data->mgt_data.data.bytes[0], data, + length); + } +} + +/* Build a VDA asyncronous event (AE) request. */ +void esas2r_build_ae_req(struct esas2r_adapter *a, struct esas2r_request *rq) +{ + struct atto_vda_ae_req *vrq = &rq->vrq->ae; + + clear_vda_request(rq); + + rq->vrq->scsi.function = VDA_FUNC_AE; + + vrq->length = cpu_to_le32(sizeof(struct atto_vda_ae_data)); + + if (a->flags & AF_LEGACY_SGE_MODE) { + vrq->sg_list_offset = + (u8)offsetof(struct atto_vda_ae_req, sge); + vrq->sge[0].length = cpu_to_le32(SGE_LAST | vrq->length); + vrq->sge[0].address = cpu_to_le64( + rq->vrq_md->phys_addr + + sizeof(union atto_vda_req)); + } else { + vrq->sg_list_offset = (u8)offsetof(struct atto_vda_ae_req, + prde); + vrq->prde[0].ctl_len = cpu_to_le32(vrq->length); + vrq->prde[0].address = cpu_to_le64( + rq->vrq_md->phys_addr + + sizeof(union atto_vda_req)); + } +} + +/* Build a VDA CLI request. */ +void esas2r_build_cli_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u32 length, + u32 cmd_rsp_len) +{ + struct atto_vda_cli_req *vrq = &rq->vrq->cli; + + clear_vda_request(rq); + + rq->vrq->scsi.function = VDA_FUNC_CLI; + + vrq->length = cpu_to_le32(length); + vrq->cmd_rsp_len = cpu_to_le32(cmd_rsp_len); + vrq->sg_list_offset = (u8)offsetof(struct atto_vda_cli_req, sge); +} + +/* Build a VDA IOCTL request. */ +void esas2r_build_ioctl_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u32 length, + u8 sub_func) +{ + struct atto_vda_ioctl_req *vrq = &rq->vrq->ioctl; + + clear_vda_request(rq); + + rq->vrq->scsi.function = VDA_FUNC_IOCTL; + + vrq->length = cpu_to_le32(length); + vrq->sub_func = sub_func; + vrq->sg_list_offset = (u8)offsetof(struct atto_vda_ioctl_req, sge); +} + +/* Build a VDA configuration request. */ +void esas2r_build_cfg_req(struct esas2r_adapter *a, + struct esas2r_request *rq, + u8 sub_func, + u32 length, + void *data) +{ + struct atto_vda_cfg_req *vrq = &rq->vrq->cfg; + + clear_vda_request(rq); + + rq->vrq->scsi.function = VDA_FUNC_CFG; + + vrq->sub_func = sub_func; + vrq->length = cpu_to_le32(length); + + if (data) { + esas2r_nuxi_cfg_data(sub_func, data); + + memcpy(&vrq->data, data, length); + } +} + +static void clear_vda_request(struct esas2r_request *rq) +{ + u32 handle = rq->vrq->scsi.handle; + + memset(rq->vrq, 0, sizeof(*rq->vrq)); + + rq->vrq->scsi.handle = handle; + + rq->req_stat = RS_PENDING; + + /* since the data buffer is separate clear that too */ + + memset(rq->data_buf, 0, ESAS2R_DATA_BUF_LEN); + + /* + * Setup next and prev pointer in case the request is not going through + * esas2r_start_request(). + */ + + INIT_LIST_HEAD(&rq->req_list); +} |