diff options
Diffstat (limited to 'drivers/scsi/qlogicisp.c')
| -rw-r--r-- | drivers/scsi/qlogicisp.c | 1935 |
1 files changed, 1935 insertions, 0 deletions
diff --git a/drivers/scsi/qlogicisp.c b/drivers/scsi/qlogicisp.c new file mode 100644 index 000000000000..71d597a9b0b0 --- /dev/null +++ b/drivers/scsi/qlogicisp.c @@ -0,0 +1,1935 @@ +/* + * QLogic ISP1020 Intelligent SCSI Processor Driver (PCI) + * Written by Erik H. Moe, ehm@cris.com + * Copyright 1995, Erik H. Moe + * Copyright 1996, 1997 Michael A. Griffith <grif@acm.org> + * Copyright 2000, Jayson C. Vantuyl <vantuyl@csc.smsu.edu> + * and Bryon W. Roche <bryon@csc.smsu.edu> + * + * 64-bit addressing added by Kanoj Sarcar <kanoj@sgi.com> + * and Leo Dagum <dagum@sgi.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, 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. + */ + +#include <linux/blkdev.h> +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/unistd.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/byteorder.h> +#include "scsi.h" +#include <scsi/scsi_host.h> + +/* + * With the qlogic interface, every queue slot can hold a SCSI + * command with up to 4 scatter/gather entries. If we need more + * than 4 entries, continuation entries can be used that hold + * another 7 entries each. Unlike for other drivers, this means + * that the maximum number of scatter/gather entries we can + * support at any given time is a function of the number of queue + * slots available. That is, host->can_queue and host->sg_tablesize + * are dynamic and _not_ independent. This all works fine because + * requests are queued serially and the scatter/gather limit is + * determined for each queue request anew. + */ +#define QLOGICISP_REQ_QUEUE_LEN 63 /* must be power of two - 1 */ +#define QLOGICISP_MAX_SG(ql) (4 + ((ql) > 0) ? 7*((ql) - 1) : 0) + +/* Configuration section *****************************************************/ + +/* Set the following macro to 1 to reload the ISP1020's firmware. This is + the latest firmware provided by QLogic. This may be an earlier/later + revision than supplied by your board. */ + +#define RELOAD_FIRMWARE 1 + +/* Set the following macro to 1 to reload the ISP1020's defaults from nvram. + If you are not sure of your settings, leave this alone, the driver will + use a set of 'safe' defaults */ + +#define USE_NVRAM_DEFAULTS 0 + +/* Macros used for debugging */ + +#define DEBUG_ISP1020 0 +#define DEBUG_ISP1020_INTR 0 +#define DEBUG_ISP1020_SETUP 0 +#define TRACE_ISP 0 + +#define DEFAULT_LOOP_COUNT 1000000 + +/* End Configuration section *************************************************/ + +#include <linux/module.h> + +#if TRACE_ISP + +# define TRACE_BUF_LEN (32*1024) + +struct { + u_long next; + struct { + u_long time; + u_int index; + u_int addr; + u_char * name; + } buf[TRACE_BUF_LEN]; +} trace; + +#define TRACE(w, i, a) \ +{ \ + unsigned long flags; \ + \ + trace.buf[trace.next].name = (w); \ + trace.buf[trace.next].time = jiffies; \ + trace.buf[trace.next].index = (i); \ + trace.buf[trace.next].addr = (long) (a); \ + trace.next = (trace.next + 1) & (TRACE_BUF_LEN - 1); \ +} + +#else +# define TRACE(w, i, a) +#endif + +#if DEBUG_ISP1020 +#define ENTER(x) printk("isp1020 : entering %s()\n", x); +#define LEAVE(x) printk("isp1020 : leaving %s()\n", x); +#define DEBUG(x) x +#else +#define ENTER(x) +#define LEAVE(x) +#define DEBUG(x) +#endif /* DEBUG_ISP1020 */ + +#if DEBUG_ISP1020_INTR +#define ENTER_INTR(x) printk("isp1020 : entering %s()\n", x); +#define LEAVE_INTR(x) printk("isp1020 : leaving %s()\n", x); +#define DEBUG_INTR(x) x +#else +#define ENTER_INTR(x) +#define LEAVE_INTR(x) +#define DEBUG_INTR(x) +#endif /* DEBUG ISP1020_INTR */ + +#define ISP1020_REV_ID 1 + +#define MAX_TARGETS 16 +#define MAX_LUNS 8 + +/* host configuration and control registers */ +#define HOST_HCCR 0xc0 /* host command and control */ + +/* pci bus interface registers */ +#define PCI_ID_LOW 0x00 /* vendor id */ +#define PCI_ID_HIGH 0x02 /* device id */ +#define ISP_CFG0 0x04 /* configuration register #0 */ +#define ISP_CFG0_HWMSK 0x000f /* Hardware revision mask */ +#define ISP_CFG0_1020 0x0001 /* ISP1020 */ +#define ISP_CFG0_1020A 0x0002 /* ISP1020A */ +#define ISP_CFG0_1040 0x0003 /* ISP1040 */ +#define ISP_CFG0_1040A 0x0004 /* ISP1040A */ +#define ISP_CFG0_1040B 0x0005 /* ISP1040B */ +#define ISP_CFG0_1040C 0x0006 /* ISP1040C */ +#define ISP_CFG1 0x06 /* configuration register #1 */ +#define ISP_CFG1_F128 0x0040 /* 128-byte FIFO threshold */ +#define ISP_CFG1_F64 0x0030 /* 128-byte FIFO threshold */ +#define ISP_CFG1_F32 0x0020 /* 128-byte FIFO threshold */ +#define ISP_CFG1_F16 0x0010 /* 128-byte FIFO threshold */ +#define ISP_CFG1_BENAB 0x0004 /* Global Bus burst enable */ +#define ISP_CFG1_SXP 0x0001 /* SXP register select */ +#define PCI_INTF_CTL 0x08 /* pci interface control */ +#define PCI_INTF_STS 0x0a /* pci interface status */ +#define PCI_SEMAPHORE 0x0c /* pci semaphore */ +#define PCI_NVRAM 0x0e /* pci nvram interface */ +#define CDMA_CONF 0x20 /* Command DMA Config */ +#define DDMA_CONF 0x40 /* Data DMA Config */ +#define DMA_CONF_SENAB 0x0008 /* SXP to DMA Data enable */ +#define DMA_CONF_RIRQ 0x0004 /* RISC interrupt enable */ +#define DMA_CONF_BENAB 0x0002 /* Bus burst enable */ +#define DMA_CONF_DIR 0x0001 /* DMA direction (0=fifo->host 1=host->fifo) */ + +/* mailbox registers */ +#define MBOX0 0x70 /* mailbox 0 */ +#define MBOX1 0x72 /* mailbox 1 */ +#define MBOX2 0x74 /* mailbox 2 */ +#define MBOX3 0x76 /* mailbox 3 */ +#define MBOX4 0x78 /* mailbox 4 */ +#define MBOX5 0x7a /* mailbox 5 */ +#define MBOX6 0x7c /* mailbox 6 */ +#define MBOX7 0x7e /* mailbox 7 */ + +/* mailbox command complete status codes */ +#define MBOX_COMMAND_COMPLETE 0x4000 +#define INVALID_COMMAND 0x4001 +#define HOST_INTERFACE_ERROR 0x4002 +#define TEST_FAILED 0x4003 +#define COMMAND_ERROR 0x4005 +#define COMMAND_PARAM_ERROR 0x4006 + +/* async event status codes */ +#define ASYNC_SCSI_BUS_RESET 0x8001 +#define SYSTEM_ERROR 0x8002 +#define REQUEST_TRANSFER_ERROR 0x8003 +#define RESPONSE_TRANSFER_ERROR 0x8004 +#define REQUEST_QUEUE_WAKEUP 0x8005 +#define EXECUTION_TIMEOUT_RESET 0x8006 + +#ifdef CONFIG_QL_ISP_A64 +#define IOCB_SEGS 2 +#define CONTINUATION_SEGS 5 +#define MAX_CONTINUATION_ENTRIES 254 +#else +#define IOCB_SEGS 4 +#define CONTINUATION_SEGS 7 +#endif /* CONFIG_QL_ISP_A64 */ + +struct Entry_header { + u_char entry_type; + u_char entry_cnt; + u_char sys_def_1; + u_char flags; +}; + +/* entry header type commands */ +#ifdef CONFIG_QL_ISP_A64 +#define ENTRY_COMMAND 9 +#define ENTRY_CONTINUATION 0xa +#else +#define ENTRY_COMMAND 1 +#define ENTRY_CONTINUATION 2 +#endif /* CONFIG_QL_ISP_A64 */ + +#define ENTRY_STATUS 3 +#define ENTRY_MARKER 4 +#define ENTRY_EXTENDED_COMMAND 5 + +/* entry header flag definitions */ +#define EFLAG_CONTINUATION 1 +#define EFLAG_BUSY 2 +#define EFLAG_BAD_HEADER 4 +#define EFLAG_BAD_PAYLOAD 8 + +struct dataseg { + u_int d_base; +#ifdef CONFIG_QL_ISP_A64 + u_int d_base_hi; +#endif + u_int d_count; +}; + +struct Command_Entry { + struct Entry_header hdr; + u_int handle; + u_char target_lun; + u_char target_id; + u_short cdb_length; + u_short control_flags; + u_short rsvd; + u_short time_out; + u_short segment_cnt; + u_char cdb[12]; +#ifdef CONFIG_QL_ISP_A64 + u_int rsvd1; + u_int rsvd2; +#endif + struct dataseg dataseg[IOCB_SEGS]; +}; + +/* command entry control flag definitions */ +#define CFLAG_NODISC 0x01 +#define CFLAG_HEAD_TAG 0x02 +#define CFLAG_ORDERED_TAG 0x04 +#define CFLAG_SIMPLE_TAG 0x08 +#define CFLAG_TAR_RTN 0x10 +#define CFLAG_READ 0x20 +#define CFLAG_WRITE 0x40 + +struct Ext_Command_Entry { + struct Entry_header hdr; + u_int handle; + u_char target_lun; + u_char target_id; + u_short cdb_length; + u_short control_flags; + u_short rsvd; + u_short time_out; + u_short segment_cnt; + u_char cdb[44]; +}; + +struct Continuation_Entry { + struct Entry_header hdr; +#ifndef CONFIG_QL_ISP_A64 + u_int reserved; +#endif + struct dataseg dataseg[CONTINUATION_SEGS]; +}; + +struct Marker_Entry { + struct Entry_header hdr; + u_int reserved; + u_char target_lun; + u_char target_id; + u_char modifier; + u_char rsvd; + u_char rsvds[52]; +}; + +/* marker entry modifier definitions */ +#define SYNC_DEVICE 0 +#define SYNC_TARGET 1 +#define SYNC_ALL 2 + +struct Status_Entry { + struct Entry_header hdr; + u_int handle; + u_short scsi_status; + u_short completion_status; + u_short state_flags; + u_short status_flags; + u_short time; + u_short req_sense_len; + u_int residual; + u_char rsvd[8]; + u_char req_sense_data[32]; +}; + +/* status entry completion status definitions */ +#define CS_COMPLETE 0x0000 +#define CS_INCOMPLETE 0x0001 +#define CS_DMA_ERROR 0x0002 +#define CS_TRANSPORT_ERROR 0x0003 +#define CS_RESET_OCCURRED 0x0004 +#define CS_ABORTED 0x0005 +#define CS_TIMEOUT 0x0006 +#define CS_DATA_OVERRUN 0x0007 +#define CS_COMMAND_OVERRUN 0x0008 +#define CS_STATUS_OVERRUN 0x0009 +#define CS_BAD_MESSAGE 0x000a +#define CS_NO_MESSAGE_OUT 0x000b +#define CS_EXT_ID_FAILED 0x000c +#define CS_IDE_MSG_FAILED 0x000d +#define CS_ABORT_MSG_FAILED 0x000e +#define CS_REJECT_MSG_FAILED 0x000f +#define CS_NOP_MSG_FAILED 0x0010 +#define CS_PARITY_ERROR_MSG_FAILED 0x0011 +#define CS_DEVICE_RESET_MSG_FAILED 0x0012 +#define CS_ID_MSG_FAILED 0x0013 +#define CS_UNEXP_BUS_FREE 0x0014 +#define CS_DATA_UNDERRUN 0x0015 + +/* status entry state flag definitions */ +#define SF_GOT_BUS 0x0100 +#define SF_GOT_TARGET 0x0200 +#define SF_SENT_CDB 0x0400 +#define SF_TRANSFERRED_DATA 0x0800 +#define SF_GOT_STATUS 0x1000 +#define SF_GOT_SENSE 0x2000 + +/* status entry status flag definitions */ +#define STF_DISCONNECT 0x0001 +#define STF_SYNCHRONOUS 0x0002 +#define STF_PARITY_ERROR 0x0004 +#define STF_BUS_RESET 0x0008 +#define STF_DEVICE_RESET 0x0010 +#define STF_ABORTED 0x0020 +#define STF_TIMEOUT 0x0040 +#define STF_NEGOTIATION 0x0080 + +/* interface control commands */ +#define ISP_RESET 0x0001 +#define ISP_EN_INT 0x0002 +#define ISP_EN_RISC 0x0004 + +/* host control commands */ +#define HCCR_NOP 0x0000 +#define HCCR_RESET 0x1000 +#define HCCR_PAUSE 0x2000 +#define HCCR_RELEASE 0x3000 +#define HCCR_SINGLE_STEP 0x4000 +#define HCCR_SET_HOST_INTR 0x5000 +#define HCCR_CLEAR_HOST_INTR 0x6000 +#define HCCR_CLEAR_RISC_INTR 0x7000 +#define HCCR_BP_ENABLE 0x8000 +#define HCCR_BIOS_DISABLE 0x9000 +#define HCCR_TEST_MODE 0xf000 + +#define RISC_BUSY 0x0004 + +/* mailbox commands */ +#define MBOX_NO_OP 0x0000 +#define MBOX_LOAD_RAM 0x0001 +#define MBOX_EXEC_FIRMWARE 0x0002 +#define MBOX_DUMP_RAM 0x0003 +#define MBOX_WRITE_RAM_WORD 0x0004 +#define MBOX_READ_RAM_WORD 0x0005 +#define MBOX_MAILBOX_REG_TEST 0x0006 +#define MBOX_VERIFY_CHECKSUM 0x0007 +#define MBOX_ABOUT_FIRMWARE 0x0008 +#define MBOX_CHECK_FIRMWARE 0x000e +#define MBOX_INIT_REQ_QUEUE 0x0010 +#define MBOX_INIT_RES_QUEUE 0x0011 +#define MBOX_EXECUTE_IOCB 0x0012 +#define MBOX_WAKE_UP 0x0013 +#define MBOX_STOP_FIRMWARE 0x0014 +#define MBOX_ABORT 0x0015 +#define MBOX_ABORT_DEVICE 0x0016 +#define MBOX_ABORT_TARGET 0x0017 +#define MBOX_BUS_RESET 0x0018 +#define MBOX_STOP_QUEUE 0x0019 +#define MBOX_START_QUEUE 0x001a +#define MBOX_SINGLE_STEP_QUEUE 0x001b +#define MBOX_ABORT_QUEUE 0x001c +#define MBOX_GET_DEV_QUEUE_STATUS 0x001d +#define MBOX_GET_FIRMWARE_STATUS 0x001f +#define MBOX_GET_INIT_SCSI_ID 0x0020 +#define MBOX_GET_SELECT_TIMEOUT 0x0021 +#define MBOX_GET_RETRY_COUNT 0x0022 +#define MBOX_GET_TAG_AGE_LIMIT 0x0023 +#define MBOX_GET_CLOCK_RATE 0x0024 +#define MBOX_GET_ACT_NEG_STATE 0x0025 +#define MBOX_GET_ASYNC_DATA_SETUP_TIME 0x0026 +#define MBOX_GET_PCI_PARAMS 0x0027 +#define MBOX_GET_TARGET_PARAMS 0x0028 +#define MBOX_GET_DEV_QUEUE_PARAMS 0x0029 +#define MBOX_SET_INIT_SCSI_ID 0x0030 +#define MBOX_SET_SELECT_TIMEOUT 0x0031 +#define MBOX_SET_RETRY_COUNT 0x0032 +#define MBOX_SET_TAG_AGE_LIMIT 0x0033 +#define MBOX_SET_CLOCK_RATE 0x0034 +#define MBOX_SET_ACTIVE_NEG_STATE 0x0035 +#define MBOX_SET_ASYNC_DATA_SETUP_TIME 0x0036 +#define MBOX_SET_PCI_CONTROL_PARAMS 0x0037 +#define MBOX_SET_TARGET_PARAMS 0x0038 +#define MBOX_SET_DEV_QUEUE_PARAMS 0x0039 +#define MBOX_RETURN_BIOS_BLOCK_ADDR 0x0040 +#define MBOX_WRITE_FOUR_RAM_WORDS 0x0041 +#define MBOX_EXEC_BIOS_IOCB 0x0042 + +#ifdef CONFIG_QL_ISP_A64 +#define MBOX_CMD_INIT_REQUEST_QUEUE_64 0x0052 +#define MBOX_CMD_INIT_RESPONSE_QUEUE_64 0x0053 +#endif /* CONFIG_QL_ISP_A64 */ + +#include "qlogicisp_asm.c" + +#define PACKB(a, b) (((a)<<4)|(b)) + +static const u_char mbox_param[] = { + PACKB(1, 1), /* MBOX_NO_OP */ + PACKB(5, 5), /* MBOX_LOAD_RAM */ + PACKB(2, 0), /* MBOX_EXEC_FIRMWARE */ + PACKB(5, 5), /* MBOX_DUMP_RAM */ + PACKB(3, 3), /* MBOX_WRITE_RAM_WORD */ + PACKB(2, 3), /* MBOX_READ_RAM_WORD */ + PACKB(6, 6), /* MBOX_MAILBOX_REG_TEST */ + PACKB(2, 3), /* MBOX_VERIFY_CHECKSUM */ + PACKB(1, 3), /* MBOX_ABOUT_FIRMWARE */ + PACKB(0, 0), /* 0x0009 */ + PACKB(0, 0), /* 0x000a */ + PACKB(0, 0), /* 0x000b */ + PACKB(0, 0), /* 0x000c */ + PACKB(0, 0), /* 0x000d */ + PACKB(1, 2), /* MBOX_CHECK_FIRMWARE */ + PACKB(0, 0), /* 0x000f */ + PACKB(5, 5), /* MBOX_INIT_REQ_QUEUE */ + PACKB(6, 6), /* MBOX_INIT_RES_QUEUE */ + PACKB(4, 4), /* MBOX_EXECUTE_IOCB */ + PACKB(2, 2), /* MBOX_WAKE_UP */ + PACKB(1, 6), /* MBOX_STOP_FIRMWARE */ + PACKB(4, 4), /* MBOX_ABORT */ + PACKB(2, 2), /* MBOX_ABORT_DEVICE */ + PACKB(3, 3), /* MBOX_ABORT_TARGET */ + PACKB(2, 2), /* MBOX_BUS_RESET */ + PACKB(2, 3), /* MBOX_STOP_QUEUE */ + PACKB(2, 3), /* MBOX_START_QUEUE */ + PACKB(2, 3), /* MBOX_SINGLE_STEP_QUEUE */ + PACKB(2, 3), /* MBOX_ABORT_QUEUE */ + PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_STATUS */ + PACKB(0, 0), /* 0x001e */ + PACKB(1, 3), /* MBOX_GET_FIRMWARE_STATUS */ + PACKB(1, 2), /* MBOX_GET_INIT_SCSI_ID */ + PACKB(1, 2), /* MBOX_GET_SELECT_TIMEOUT */ + PACKB(1, 3), /* MBOX_GET_RETRY_COUNT */ + PACKB(1, 2), /* MBOX_GET_TAG_AGE_LIMIT */ + PACKB(1, 2), /* MBOX_GET_CLOCK_RATE */ + PACKB(1, 2), /* MBOX_GET_ACT_NEG_STATE */ + PACKB(1, 2), /* MBOX_GET_ASYNC_DATA_SETUP_TIME */ + PACKB(1, 3), /* MBOX_GET_PCI_PARAMS */ + PACKB(2, 4), /* MBOX_GET_TARGET_PARAMS */ + PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_PARAMS */ + PACKB(0, 0), /* 0x002a */ + PACKB(0, 0), /* 0x002b */ + PACKB(0, 0), /* 0x002c */ + PACKB(0, 0), /* 0x002d */ + PACKB(0, 0), /* 0x002e */ + PACKB(0, 0), /* 0x002f */ + PACKB(2, 2), /* MBOX_SET_INIT_SCSI_ID */ + PACKB(2, 2), /* MBOX_SET_SELECT_TIMEOUT */ + PACKB(3, 3), /* MBOX_SET_RETRY_COUNT */ + PACKB(2, 2), /* MBOX_SET_TAG_AGE_LIMIT */ + PACKB(2, 2), /* MBOX_SET_CLOCK_RATE */ + PACKB(2, 2), /* MBOX_SET_ACTIVE_NEG_STATE */ + PACKB(2, 2), /* MBOX_SET_ASYNC_DATA_SETUP_TIME */ + PACKB(3, 3), /* MBOX_SET_PCI_CONTROL_PARAMS */ + PACKB(4, 4), /* MBOX_SET_TARGET_PARAMS */ + PACKB(4, 4), /* MBOX_SET_DEV_QUEUE_PARAMS */ + PACKB(0, 0), /* 0x003a */ + PACKB(0, 0), /* 0x003b */ + PACKB(0, 0), /* 0x003c */ + PACKB(0, 0), /* 0x003d */ + PACKB(0, 0), /* 0x003e */ + PACKB(0, 0), /* 0x003f */ + PACKB(1, 2), /* MBOX_RETURN_BIOS_BLOCK_ADDR */ + PACKB(6, 1), /* MBOX_WRITE_FOUR_RAM_WORDS */ + PACKB(2, 3) /* MBOX_EXEC_BIOS_IOCB */ +#ifdef CONFIG_QL_ISP_A64 + ,PACKB(0, 0), /* 0x0043 */ + PACKB(0, 0), /* 0x0044 */ + PACKB(0, 0), /* 0x0045 */ + PACKB(0, 0), /* 0x0046 */ + PACKB(0, 0), /* 0x0047 */ + PACKB(0, 0), /* 0x0048 */ + PACKB(0, 0), /* 0x0049 */ + PACKB(0, 0), /* 0x004a */ + PACKB(0, 0), /* 0x004b */ + PACKB(0, 0), /* 0x004c */ + PACKB(0, 0), /* 0x004d */ + PACKB(0, 0), /* 0x004e */ + PACKB(0, 0), /* 0x004f */ + PACKB(0, 0), /* 0x0050 */ + PACKB(0, 0), /* 0x0051 */ + PACKB(8, 8), /* MBOX_CMD_INIT_REQUEST_QUEUE_64 (0x0052) */ + PACKB(8, 8) /* MBOX_CMD_INIT_RESPONSE_QUEUE_64 (0x0053) */ +#endif /* CONFIG_QL_ISP_A64 */ +}; + +#define MAX_MBOX_COMMAND (sizeof(mbox_param)/sizeof(u_short)) + +struct host_param { + u_short fifo_threshold; + u_short host_adapter_enable; + u_short initiator_scsi_id; + u_short bus_reset_delay; + u_short retry_count; + u_short retry_delay; + u_short async_data_setup_time; + u_short req_ack_active_negation; + u_short data_line_active_negation; + u_short data_dma_burst_enable; + u_short command_dma_burst_enable; + u_short tag_aging; + u_short selection_timeout; + u_short max_queue_depth; +}; + +/* + * Device Flags: + * + * Bit Name + * --------- + * 7 Disconnect Privilege + * 6 Parity Checking + * 5 Wide Data Transfers + * 4 Synchronous Data Transfers + * 3 Tagged Queuing + * 2 Automatic Request Sense + * 1 Stop Queue on Check Condition + * 0 Renegotiate on Error + */ + +struct dev_param { + u_short device_flags; + u_short execution_throttle; + u_short synchronous_period; + u_short synchronous_offset; + u_short device_enable; + u_short reserved; /* pad */ +}; + +/* + * The result queue can be quite a bit smaller since continuation entries + * do not show up there: + */ +#define RES_QUEUE_LEN ((QLOGICISP_REQ_QUEUE_LEN + 1) / 8 - 1) +#define QUEUE_ENTRY_LEN 64 +#define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN) + +struct isp_queue_entry { + char __opaque[QUEUE_ENTRY_LEN]; +}; + +struct isp1020_hostdata { + void __iomem *memaddr; + u_char revision; + struct host_param host_param; + struct dev_param dev_param[MAX_TARGETS]; + struct pci_dev *pci_dev; + + struct isp_queue_entry *res_cpu; /* CPU-side address of response queue. */ + struct isp_queue_entry *req_cpu; /* CPU-size address of request queue. */ + + /* result and request queues (shared with isp1020): */ + u_int req_in_ptr; /* index of next request slot */ + u_int res_out_ptr; /* index of next result slot */ + + /* this is here so the queues are nicely aligned */ + long send_marker; /* do we need to send a marker? */ + + /* The cmd->handle has a fixed size, and is only 32-bits. We + * need to take care to handle 64-bit systems correctly thus what + * we actually place in cmd->handle is an index to the following + * table. Kudos to Matt Jacob for the technique. -DaveM + */ + Scsi_Cmnd *cmd_slots[QLOGICISP_REQ_QUEUE_LEN + 1]; + + dma_addr_t res_dma; /* PCI side view of response queue */ + dma_addr_t req_dma; /* PCI side view of request queue */ +}; + +/* queue length's _must_ be power of two: */ +#define QUEUE_DEPTH(in, out, ql) ((in - out) & (ql)) +#define REQ_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, \ + QLOGICISP_REQ_QUEUE_LEN) +#define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN) + +static void isp1020_enable_irqs(struct Scsi_Host *); +static void isp1020_disable_irqs(struct Scsi_Host *); +static int isp1020_init(struct Scsi_Host *); +static int isp1020_reset_hardware(struct Scsi_Host *); +static int isp1020_set_defaults(struct Scsi_Host *); +static int isp1020_load_parameters(struct Scsi_Host *); +static int isp1020_mbox_command(struct Scsi_Host *, u_short []); +static int isp1020_return_status(struct Status_Entry *); +static void isp1020_intr_handler(int, void *, struct pt_regs *); +static irqreturn_t do_isp1020_intr_handler(int, void *, struct pt_regs *); + +#if USE_NVRAM_DEFAULTS +static int isp1020_get_defaults(struct Scsi_Host *); +static int isp1020_verify_nvram(struct Scsi_Host *); +static u_short isp1020_read_nvram_word(struct Scsi_Host *, u_short); +#endif + +#if DEBUG_ISP1020 +static void isp1020_print_scsi_cmd(Scsi_Cmnd *); +#endif +#if DEBUG_ISP1020_INTR +static void isp1020_print_status_entry(struct Status_Entry *); +#endif + +/* memaddr should be used to determine if memmapped port i/o is being used + * non-null memaddr == mmap'd + * JV 7-Jan-2000 + */ +static inline u_short isp_inw(struct Scsi_Host *host, long offset) +{ + struct isp1020_hostdata *h = (struct isp1020_hostdata *)host->hostdata; + if (h->memaddr) + return readw(h->memaddr + offset); + else + return inw(host->io_port + offset); +} + +static inline void isp_outw(u_short val, struct Scsi_Host *host, long offset) +{ + struct isp1020_hostdata *h = (struct isp1020_hostdata *)host->hostdata; + if (h->memaddr) + writew(val, h->memaddr + offset); + else + outw(val, host->io_port + offset); +} + +static inline void isp1020_enable_irqs(struct Scsi_Host *host) +{ + isp_outw(ISP_EN_INT|ISP_EN_RISC, host, PCI_INTF_CTL); +} + + +static inline void isp1020_disable_irqs(struct Scsi_Host *host) +{ + isp_outw(0x0, host, PCI_INTF_CTL); +} + + +static int isp1020_detect(Scsi_Host_Template *tmpt) +{ + int hosts = 0; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + struct pci_dev *pdev = NULL; + + ENTER("isp1020_detect"); + + tmpt->proc_name = "isp1020"; + + while ((pdev = pci_find_device(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP1020, pdev))) + { + if (pci_enable_device(pdev)) + continue; + + host = scsi_register(tmpt, sizeof(struct isp1020_hostdata)); + if (!host) + continue; + + hostdata = (struct isp1020_hostdata *) host->hostdata; + + memset(hostdata, 0, sizeof(struct isp1020_hostdata)); + + hostdata->pci_dev = pdev; + scsi_set_device(host, &pdev->dev); + + if (isp1020_init(host)) + goto fail_and_unregister; + + if (isp1020_reset_hardware(host) +#if USE_NVRAM_DEFAULTS + || isp1020_get_defaults(host) +#else + || isp1020_set_defaults(host) +#endif /* USE_NVRAM_DEFAULTS */ + || isp1020_load_parameters(host)) { + goto fail_uninit; + } + + host->this_id = hostdata->host_param.initiator_scsi_id; + host->max_sectors = 64; + + if (request_irq(host->irq, do_isp1020_intr_handler, SA_INTERRUPT | SA_SHIRQ, + "qlogicisp", host)) + { + printk("qlogicisp : interrupt %d already in use\n", + host->irq); + goto fail_uninit; + } + + isp_outw(0x0, host, PCI_SEMAPHORE); + isp_outw(HCCR_CLEAR_RISC_INTR, host, HOST_HCCR); + isp1020_enable_irqs(host); + + hosts++; + continue; + + fail_uninit: + iounmap(hostdata->memaddr); + release_region(host->io_port, 0xff); + fail_and_unregister: + if (hostdata->res_cpu) + pci_free_consistent(hostdata->pci_dev, + QSIZE(RES_QUEUE_LEN), + hostdata->res_cpu, + hostdata->res_dma); + if (hostdata->req_cpu) + pci_free_consistent(hostdata->pci_dev, + QSIZE(QLOGICISP_REQ_QUEUE_LEN), + hostdata->req_cpu, + hostdata->req_dma); + scsi_unregister(host); + } + + LEAVE("isp1020_detect"); + + return hosts; +} + + +static int isp1020_release(struct Scsi_Host *host) +{ + struct isp1020_hostdata *hostdata; + + ENTER("isp1020_release"); + + hostdata = (struct isp1020_hostdata *) host->hostdata; + + isp_outw(0x0, host, PCI_INTF_CTL); + free_irq(host->irq, host); + + iounmap(hostdata->memaddr); + + release_region(host->io_port, 0xff); + + LEAVE("isp1020_release"); + + return 0; +} + + +static const char *isp1020_info(struct Scsi_Host *host) +{ + static char buf[80]; + struct isp1020_hostdata *hostdata; + + ENTER("isp1020_info"); + + hostdata = (struct isp1020_hostdata *) host->hostdata; + sprintf(buf, + "QLogic ISP1020 SCSI on PCI bus %02x device %02x irq %d %s base 0x%lx", + hostdata->pci_dev->bus->number, hostdata->pci_dev->devfn, host->irq, + (hostdata->memaddr ? "MEM" : "I/O"), + (hostdata->memaddr ? (unsigned long)hostdata->memaddr : host->io_port)); + + LEAVE("isp1020_info"); + + return buf; +} + + +/* + * The middle SCSI layer ensures that queuecommand never gets invoked + * concurrently with itself or the interrupt handler (though the + * interrupt handler may call this routine as part of + * request-completion handling). + */ +static int isp1020_queuecommand(Scsi_Cmnd *Cmnd, void (*done)(Scsi_Cmnd *)) +{ + int i, n, num_free; + u_int in_ptr, out_ptr; + struct dataseg * ds; + struct scatterlist *sg; + struct Command_Entry *cmd; + struct Continuation_Entry *cont; + struct Scsi_Host *host; + struct isp1020_hostdata *hostdata; + dma_addr_t dma_addr; + + ENTER("isp1020_queuecommand"); + + host = Cmnd->device->host; + hostdata = (struct isp1020_hostdata *) host->hostdata; + Cmnd->scsi_done = done; + + DEBUG(isp1020_print_scsi_cmd(Cmnd)); + + out_ptr = isp_inw(host, + MBOX4); + in_ptr = hostdata->req_in_ptr; + + DEBUG(printk("qlogicisp : request queue depth %d\n", + REQ_QUEUE_DEPTH(in_ptr, out_ptr))); + + cmd = (struct Command_Entry *) &hostdata->req_cpu[in_ptr]; + in_ptr = (in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN; + if (in_ptr == out_ptr) { + printk("qlogicisp : request queue overflow\n"); + return 1; + } + + if (hostdata->send_marker) { + struct Marker_Entry *marker; + + TRACE("queue marker", in_ptr, 0); + + DEBUG(printk("qlogicisp : adding marker entry\n")); + marker = (struct Marker_Entry *) cmd; + memset(marker, 0, sizeof(struct Marker_Entry)); + + marker->hdr.entry_type = ENTRY_MARKER; + marker->hdr.entry_cnt = 1; + marker->modifier = SYNC_ALL; + + hostdata->send_marker = 0; + + if (((in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN) == out_ptr) { + isp_outw(in_ptr, host, MBOX4); + hostdata->req_in_ptr = in_ptr; + printk("qlogicisp : request queue overflow\n"); + return 1; + } + cmd = (struct Command_Entry *) &hostdata->req_cpu[in_ptr]; + in_ptr = (in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN; + } + + TRACE("queue command", in_ptr, Cmnd); + + memset(cmd, 0, sizeof(struct Command_Entry)); + + cmd->hdr.entry_type = ENTRY_COMMAND; + cmd->hdr.entry_cnt = 1; + + cmd->target_lun = Cmnd->device->lun; + cmd->target_id = Cmnd->device->id; + cmd->cdb_length = cpu_to_le16(Cmnd->cmd_len); + cmd->control_flags = cpu_to_le16(CFLAG_READ | CFLAG_WRITE); + cmd->time_out = cpu_to_le16(30); + + memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len); + + if (Cmnd->use_sg) { + int sg_count; + + sg = (struct scatterlist *) Cmnd->request_buffer; + ds = cmd->dataseg; + + sg_count = pci_map_sg(hostdata->pci_dev, sg, Cmnd->use_sg, + scsi_to_pci_dma_dir(Cmnd->sc_data_direction)); + + cmd->segment_cnt = cpu_to_le16(sg_count); + + /* fill in first four sg entries: */ + n = sg_count; + if (n > IOCB_SEGS) + n = IOCB_SEGS; + for (i = 0; i < n; i++) { + dma_addr = sg_dma_address(sg); + ds[i].d_base = cpu_to_le32((u32) dma_addr); +#ifdef CONFIG_QL_ISP_A64 + ds[i].d_base_hi = cpu_to_le32((u32) (dma_addr>>32)); +#endif /* CONFIG_QL_ISP_A64 */ + ds[i].d_count = cpu_to_le32(sg_dma_len(sg)); + ++sg; + } + sg_count -= IOCB_SEGS; + + while (sg_count > 0) { + ++cmd->hdr.entry_cnt; + cont = (struct Continuation_Entry *) + &hostdata->req_cpu[in_ptr]; + in_ptr = (in_ptr + 1) & QLOGICISP_REQ_QUEUE_LEN; + if (in_ptr == out_ptr) { + printk("isp1020: unexpected request queue " + "overflow\n"); + return 1; + } + TRACE("queue continuation", in_ptr, 0); + cont->hdr.entry_type = ENTRY_CONTINUATION; + cont->hdr.entry_cnt = 0; + cont->hdr.sys_def_1 = 0; + cont->hdr.flags = 0; +#ifndef CONFIG_QL_ISP_A64 + cont->reserved = 0; +#endif + ds = cont->dataseg; + n = sg_count; + if (n > CONTINUATION_SEGS) + n = CONTINUATION_SEGS; + for (i = 0; i < n; ++i) { + dma_addr = sg_dma_address(sg); + ds[i].d_base = cpu_to_le32((u32) dma_addr); +#ifdef CONFIG_QL_ISP_A64 + ds[i].d_base_hi = cpu_to_le32((u32)(dma_addr>>32)); +#endif /* CONFIG_QL_ISP_A64 */ + ds[i].d_count = cpu_to_le32(sg_dma_len(sg)); + ++sg; + } + sg_count -= n; + } + } else if (Cmnd->request_bufflen) { + /*Cmnd->SCp.ptr = (char *)(unsigned long)*/ + dma_addr = pci_map_single(hostdata->pci_dev, + Cmnd->request_buffer, + Cmnd->request_bufflen, + scsi_to_pci_dma_dir(Cmnd->sc_data_direction)); + Cmnd->SCp.ptr = (char *)(unsigned long) dma_addr; + + cmd->dataseg[0].d_base = + cpu_to_le32((u32) dma_addr); +#ifdef CONFIG_QL_ISP_A64 + cmd->dataseg[0].d_base_hi = + cpu_to_le32((u32) (dma_addr>>32)); +#endif /* CONFIG_QL_ISP_A64 */ + cmd->dataseg[0].d_count = + cpu_to_le32((u32)Cmnd->request_bufflen); + cmd->segment_cnt = cpu_to_le16(1); + } else { + cmd->dataseg[0].d_base = 0; +#ifdef CONFIG_QL_ISP_A64 + cmd->dataseg[0].d_base_hi = 0; +#endif /* CONFIG_QL_ISP_A64 */ + cmd->dataseg[0].d_count = 0; + cmd->segment_cnt = cpu_to_le16(1); /* Shouldn't this be 0? */ + } + + /* Committed, record Scsi_Cmd so we can find it later. */ + cmd->handle = in_ptr; + hostdata->cmd_slots[in_ptr] = Cmnd; + + isp_outw(in_ptr, host, MBOX4); + hostdata->req_in_ptr = in_ptr; + + num_free = QLOGICISP_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr); + host->can_queue = host->host_busy + num_free; + host->sg_tablesize = QLOGICISP_MAX_SG(num_free); + + LEAVE("isp1020_queuecommand"); + + return 0; +} + + +#define ASYNC_EVENT_INTERRUPT 0x01 + +irqreturn_t do_isp1020_intr_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + struct Scsi_Host *host = dev_id; + unsigned long flags; + + spin_lock_irqsave(host->host_lock, flags); + isp1020_intr_handler(irq, dev_id, regs); + spin_unlock_irqrestore(host->host_lock, flags); + + return IRQ_HANDLED; +} + +void isp1020_intr_handler(int irq, void *dev_id, struct pt_regs *regs) +{ + Scsi_Cmnd *Cmnd; + struct Status_Entry *sts; + struct Scsi_Host *host = dev_id; + struct isp1020_hostdata *hostdata; + u_int in_ptr, out_ptr; + u_short status; + + ENTER_INTR("isp1020_intr_handler"); + + hostdata = (struct isp1020_hostdata *) host->hostdata; + + DEBUG_INTR(printk("qlogicisp : interrupt on line %d\n", irq)); + + if (!(isp_inw(host, PCI_INTF_STS) & 0x04)) { + /* spurious interrupts can happen legally */ + DEBUG_INTR(printk("qlogicisp: got spurious interrupt\n")); + return; + } + in_ptr = isp_inw(host, MBOX5); + isp_outw(HCCR_CLEAR_RISC_INTR, host, HOST_HCCR); + + if ((isp_inw(host, PCI_SEMAPHORE) & ASYNC_EVENT_INTERRUPT)) { + status = isp_inw(host, MBOX0); + + DEBUG_INTR(printk("qlogicisp : mbox completion status: %x\n", + status)); + + switch (status) { + case ASYNC_SCSI_BUS_RESET: + case EXECUTION_TIMEOUT_RESET: + hostdata->send_marker = 1; + break; + case INVALID_COMMAND: + case HOST_INTERFACE_ERROR: + case COMMAND_ERROR: + case COMMAND_PARAM_ERROR: + printk("qlogicisp : bad mailbox return status\n"); + break; + } + isp_outw(0x0, host, PCI_SEMAPHORE); + } + out_ptr = hostdata->res_out_ptr; + + DEBUG_INTR(printk("qlogicisp : response queue update\n")); + DEBUG_INTR(printk("qlogicisp : response queue depth %d\n", + QUEUE_DEPTH(in_ptr, out_ptr, RES_QUEUE_LEN))); + + while (out_ptr != in_ptr) { + u_int cmd_slot; + + sts = (struct Status_Entry *) &hostdata->res_cpu[out_ptr]; + out_ptr = (out_ptr + 1) & RES_QUEUE_LEN; + + cmd_slot = sts->handle; + Cmnd = hostdata->cmd_slots[cmd_slot]; + hostdata->cmd_slots[cmd_slot] = NULL; + + TRACE("done", out_ptr, Cmnd); + + if (le16_to_cpu(sts->completion_status) == CS_RESET_OCCURRED + || le16_to_cpu(sts->completion_status) == CS_ABORTED + || (le16_to_cpu(sts->status_flags) & STF_BUS_RESET)) + hostdata->send_marker = 1; + + if (le16_to_cpu(sts->state_flags) & SF_GOT_SENSE) + memcpy(Cmnd->sense_buffer, sts->req_sense_data, + sizeof(Cmnd->sense_buffer)); + + DEBUG_INTR(isp1020_print_status_entry(sts)); + + if (sts->hdr.entry_type == ENTRY_STATUS) + Cmnd->result = isp1020_return_status(sts); + else + Cmnd->result = DID_ERROR << 16; + + if (Cmnd->use_sg) + pci_unmap_sg(hostdata->pci_dev, + (struct scatterlist *)Cmnd->buffer, + Cmnd->use_sg, + scsi_to_pci_dma_dir(Cmnd->sc_data_direction)); + else if (Cmnd->request_bufflen) + pci_unmap_single(hostdata->pci_dev, +#ifdef CONFIG_QL_ISP_A64 + (dma_addr_t)((long)Cmnd->SCp.ptr), +#else + (u32)((long)Cmnd->SCp.ptr), +#endif + Cmnd->request_bufflen, + scsi_to_pci_dma_dir(Cmnd->sc_data_direction)); + + isp_outw(out_ptr, host, MBOX5); + (*Cmnd->scsi_done)(Cmnd); + } + hostdata->res_out_ptr = out_ptr; + + LEAVE_INTR("isp1020_intr_handler"); +} + + +static int isp1020_return_status(struct Status_Entry *sts) +{ + int host_status = DID_ERROR; +#if DEBUG_ISP1020_INTR + static char *reason[] = { + "DID_OK", + "DID_NO_CONNECT", + "DID_BUS_BUSY", + "DID_TIME_OUT", + "DID_BAD_TARGET", + "DID_ABORT", + "DID_PARITY", + "DID_ERROR", + "DID_RESET", + "DID_BAD_INTR" + }; +#endif /* DEBUG_ISP1020_INTR */ + + ENTER("isp1020_return_status"); + + DEBUG(printk("qlogicisp : completion status = 0x%04x\n", + le16_to_cpu(sts->completion_status))); + + switch(le16_to_cpu(sts->completion_status)) { + case CS_COMPLETE: + host_status = DID_OK; + break; + case CS_INCOMPLETE: + if (!(le16_to_cpu(sts->state_flags) & SF_GOT_BUS)) + host_status = DID_NO_CONNECT; + else if (!(le16_to_cpu(sts->state_flags) & SF_GOT_TARGET)) + host_status = DID_BAD_TARGET; + else if (!(le16_to_cpu(sts->state_flags) & SF_SENT_CDB)) + host_status = DID_ERROR; + else if (!(le16_to_cpu(sts->state_flags) & SF_TRANSFERRED_DATA)) + host_status = DID_ERROR; + else if (!(le16_to_cpu(sts->state_flags) & SF_GOT_STATUS)) + host_status = DID_ERROR; + else if (!(le16_to_cpu(sts->state_flags) & SF_GOT_SENSE)) + host_status = DID_ERROR; + break; + case CS_DMA_ERROR: + case CS_TRANSPORT_ERROR: + host_status = DID_ERROR; + break; + case CS_RESET_OCCURRED: + host_status = DID_RESET; + break; + case CS_ABORTED: + host_status = DID_ABORT; + break; + case CS_TIMEOUT: + host_status = DID_TIME_OUT; + break; + case CS_DATA_OVERRUN: + case CS_COMMAND_OVERRUN: + case CS_STATUS_OVERRUN: + case CS_BAD_MESSAGE: + case CS_NO_MESSAGE_OUT: + case CS_EXT_ID_FAILED: + case CS_IDE_MSG_FAILED: + case CS_ABORT_MSG_FAILED: + case CS_NOP_MSG_FAILED: + case CS_PARITY_ERROR_MSG_FAILED: + case CS_DEVICE_RESET_MSG_FAILED: + case CS_ID_MSG_FAILED: + case CS_UNEXP_BUS_FREE: + host_status = DID_ERROR; + break; + case CS_DATA_UNDERRUN: + host_status = DID_OK; + break; + default: + printk("qlogicisp : unknown completion status 0x%04x\n", + le16_to_cpu(sts->completion_status)); + host_status = DID_ERROR; + break; + } + + DEBUG_INTR(printk("qlogicisp : host status (%s) scsi status %x\n", + reason[host_status], le16_to_cpu(sts->scsi_status))); + + LEAVE("isp1020_return_status"); + + return (le16_to_cpu(sts->scsi_status) & STATUS_MASK) | (host_status << 16); +} + + +static int isp1020_biosparam(struct scsi_device *sdev, struct block_device *n, + sector_t capacity, int ip[]) +{ + int size = capacity; + + ENTER("isp1020_biosparam"); + + ip[0] = 64; + ip[1] = 32; + ip[2] = size >> 11; + if (ip[2] > 1024) { + ip[0] = 255; + ip[1] = 63; + ip[2] = size / (ip[0] * ip[1]); +#if 0 + if (ip[2] > 1023) + ip[2] = 1023; +#endif + } + + LEAVE("isp1020_biosparam"); + + return 0; +} + + +static int isp1020_reset_hardware(struct Scsi_Host *host) +{ + u_short param[6]; + int loop_count; + + ENTER("isp1020_reset_hardware"); + + isp_outw(ISP_RESET, host, PCI_INTF_CTL); + udelay(100); + isp_outw(HCCR_RESET, host, HOST_HCCR); + udelay(100); + isp_outw(HCCR_RELEASE, host, HOST_HCCR); + isp_outw(HCCR_BIOS_DISABLE, host, HOST_HCCR); + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && isp_inw(host, HOST_HCCR) == RISC_BUSY) { + barrier(); + cpu_relax(); + } + if (!loop_count) + printk("qlogicisp: reset_hardware loop timeout\n"); + + isp_outw(0, host, ISP_CFG1); + +#if DEBUG_ISP1020 + printk("qlogicisp : mbox 0 0x%04x \n", isp_inw(host, MBOX0)); + printk("qlogicisp : mbox 1 0x%04x \n", isp_inw(host, MBOX1)); + printk("qlogicisp : mbox 2 0x%04x \n", isp_inw(host, MBOX2)); + printk("qlogicisp : mbox 3 0x%04x \n", isp_inw(host, MBOX3)); + printk("qlogicisp : mbox 4 0x%04x \n", isp_inw(host, MBOX4)); + printk("qlogicisp : mbox 5 0x%04x \n", isp_inw(host, MBOX5)); +#endif /* DEBUG_ISP1020 */ + + param[0] = MBOX_NO_OP; + isp1020_mbox_command(host, param); + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : NOP test failed\n"); + return 1; + } + + DEBUG(printk("qlogicisp : loading risc ram\n")); + +#if RELOAD_FIRMWARE + for (loop_count = 0; loop_count < risc_code_length01; loop_count++) { + param[0] = MBOX_WRITE_RAM_WORD; + param[1] = risc_code_addr01 + loop_count; + param[2] = risc_code01[loop_count]; + isp1020_mbox_command(host, param); + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : firmware load failure at %d\n", + loop_count); + return 1; + } + } +#endif /* RELOAD_FIRMWARE */ + + DEBUG(printk("qlogicisp : verifying checksum\n")); + + param[0] = MBOX_VERIFY_CHECKSUM; + param[1] = risc_code_addr01; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : ram checksum failure\n"); + return 1; + } + + DEBUG(printk("qlogicisp : executing firmware\n")); + + param[0] = MBOX_EXEC_FIRMWARE; + param[1] = risc_code_addr01; + + isp1020_mbox_command(host, param); + + param[0] = MBOX_ABOUT_FIRMWARE; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : about firmware failure\n"); + return 1; + } + + DEBUG(printk("qlogicisp : firmware major revision %d\n", param[1])); + DEBUG(printk("qlogicisp : firmware minor revision %d\n", param[2])); + + LEAVE("isp1020_reset_hardware"); + + return 0; +} + + +static int isp1020_init(struct Scsi_Host *sh) +{ + u_long io_base, mem_base, io_flags, mem_flags; + struct isp1020_hostdata *hostdata; + u_char revision; + u_int irq; + u_short command; + struct pci_dev *pdev; + + ENTER("isp1020_init"); + + hostdata = (struct isp1020_hostdata *) sh->hostdata; + pdev = hostdata->pci_dev; + + if (pci_read_config_word(pdev, PCI_COMMAND, &command) + || pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision)) + { + printk("qlogicisp : error reading PCI configuration\n"); + return 1; + } + + io_base = pci_resource_start(pdev, 0); + mem_base = pci_resource_start(pdev, 1); + io_flags = pci_resource_flags(pdev, 0); + mem_flags = pci_resource_flags(pdev, 1); + irq = pdev->irq; + + if (pdev->vendor != PCI_VENDOR_ID_QLOGIC) { + printk("qlogicisp : 0x%04x is not QLogic vendor ID\n", + pdev->vendor); + return 1; + } + + if (pdev->device != PCI_DEVICE_ID_QLOGIC_ISP1020) { + printk("qlogicisp : 0x%04x does not match ISP1020 device id\n", + pdev->device); + return 1; + } + +#ifdef __alpha__ + /* Force ALPHA to use bus I/O and not bus MEM. + This is to avoid having to use HAE_MEM registers, + which is broken on some platforms and with SMP. */ + command &= ~PCI_COMMAND_MEMORY; +#endif + + sh->io_port = io_base; + + if (!request_region(sh->io_port, 0xff, "qlogicisp")) { + printk("qlogicisp : i/o region 0x%lx-0x%lx already " + "in use\n", + sh->io_port, sh->io_port + 0xff); + return 1; + } + + if ((command & PCI_COMMAND_MEMORY) && + ((mem_flags & 1) == 0)) { + hostdata->memaddr = ioremap(mem_base, PAGE_SIZE); + if (!hostdata->memaddr) { + printk("qlogicisp : i/o remapping failed.\n"); + goto out_release; + } + } else { + if (command & PCI_COMMAND_IO && (io_flags & 3) != 1) { + printk("qlogicisp : i/o mapping is disabled\n"); + goto out_release; + } + hostdata->memaddr = NULL; /* zero to signify no i/o mapping */ + mem_base = 0; + } + + if (revision != ISP1020_REV_ID) + printk("qlogicisp : new isp1020 revision ID (%d)\n", revision); + + if (isp_inw(sh, PCI_ID_LOW) != PCI_VENDOR_ID_QLOGIC + || isp_inw(sh, PCI_ID_HIGH) != PCI_DEVICE_ID_QLOGIC_ISP1020) + { + printk("qlogicisp : can't decode %s address space 0x%lx\n", + (io_base ? "I/O" : "MEM"), + (io_base ? io_base : mem_base)); + goto out_unmap; + } + + hostdata->revision = revision; + + sh->irq = irq; + sh->max_id = MAX_TARGETS; + sh->max_lun = MAX_LUNS; + + hostdata->res_cpu = pci_alloc_consistent(hostdata->pci_dev, + QSIZE(RES_QUEUE_LEN), + &hostdata->res_dma); + if (hostdata->res_cpu == NULL) { + printk("qlogicisp : can't allocate response queue\n"); + goto out_unmap; + } + + hostdata->req_cpu = pci_alloc_consistent(hostdata->pci_dev, + QSIZE(QLOGICISP_REQ_QUEUE_LEN), + &hostdata->req_dma); + if (hostdata->req_cpu == NULL) { + pci_free_consistent(hostdata->pci_dev, + QSIZE(RES_QUEUE_LEN), + hostdata->res_cpu, + hostdata->res_dma); + printk("qlogicisp : can't allocate request queue\n"); + goto out_unmap; + } + + pci_set_master(pdev); + + LEAVE("isp1020_init"); + + return 0; + +out_unmap: + iounmap(hostdata->memaddr); +out_release: + release_region(sh->io_port, 0xff); + return 1; +} + + +#if USE_NVRAM_DEFAULTS + +static int isp1020_get_defaults(struct Scsi_Host *host) +{ + int i; + u_short value; + struct isp1020_hostdata *hostdata = + (struct isp1020_hostdata *) host->hostdata; + + ENTER("isp1020_get_defaults"); + + if (!isp1020_verify_nvram(host)) { + printk("qlogicisp : nvram checksum failure\n"); + printk("qlogicisp : attempting to use default parameters\n"); + return isp1020_set_defaults(host); + } + + value = isp1020_read_nvram_word(host, 2); + hostdata->host_param.fifo_threshold = (value >> 8) & 0x03; + hostdata->host_param.host_adapter_enable = (value >> 11) & 0x01; + hostdata->host_param.initiator_scsi_id = (value >> 12) & 0x0f; + + value = isp1020_read_nvram_word(host, 3); + hostdata->host_param.bus_reset_delay = value & 0xff; + hostdata->host_param.retry_count = value >> 8; + + value = isp1020_read_nvram_word(host, 4); + hostdata->host_param.retry_delay = value & 0xff; + hostdata->host_param.async_data_setup_time = (value >> 8) & 0x0f; + hostdata->host_param.req_ack_active_negation = (value >> 12) & 0x01; + hostdata->host_param.data_line_active_negation = (value >> 13) & 0x01; + hostdata->host_param.data_dma_burst_enable = (value >> 14) & 0x01; + hostdata->host_param.command_dma_burst_enable = (value >> 15); + + value = isp1020_read_nvram_word(host, 5); + hostdata->host_param.tag_aging = value & 0xff; + + value = isp1020_read_nvram_word(host, 6); + hostdata->host_param.selection_timeout = value & 0xffff; + + value = isp1020_read_nvram_word(host, 7); + hostdata->host_param.max_queue_depth = value & 0xffff; + +#if DEBUG_ISP1020_SETUP + printk("qlogicisp : fifo threshold=%d\n", + hostdata->host_param.fifo_threshold); + printk("qlogicisp : initiator scsi id=%d\n", + hostdata->host_param.initiator_scsi_id); + printk("qlogicisp : bus reset delay=%d\n", + hostdata->host_param.bus_reset_delay); + printk("qlogicisp : retry count=%d\n", + hostdata->host_param.retry_count); + printk("qlogicisp : retry delay=%d\n", + hostdata->host_param.retry_delay); + printk("qlogicisp : async data setup time=%d\n", + hostdata->host_param.async_data_setup_time); + printk("qlogicisp : req/ack active negation=%d\n", + hostdata->host_param.req_ack_active_negation); + printk("qlogicisp : data line active negation=%d\n", + hostdata->host_param.data_line_active_negation); + printk("qlogicisp : data DMA burst enable=%d\n", + hostdata->host_param.data_dma_burst_enable); + printk("qlogicisp : command DMA burst enable=%d\n", + hostdata->host_param.command_dma_burst_enable); + printk("qlogicisp : tag age limit=%d\n", + hostdata->host_param.tag_aging); + printk("qlogicisp : selection timeout limit=%d\n", + hostdata->host_param.selection_timeout); + printk("qlogicisp : max queue depth=%d\n", + hostdata->host_param.max_queue_depth); +#endif /* DEBUG_ISP1020_SETUP */ + + for (i = 0; i < MAX_TARGETS; i++) { + + value = isp1020_read_nvram_word(host, 14 + i * 3); + hostdata->dev_param[i].device_flags = value & 0xff; + hostdata->dev_param[i].execution_throttle = value >> 8; + + value = isp1020_read_nvram_word(host, 15 + i * 3); + hostdata->dev_param[i].synchronous_period = value & 0xff; + hostdata->dev_param[i].synchronous_offset = (value >> 8) & 0x0f; + hostdata->dev_param[i].device_enable = (value >> 12) & 0x01; + +#if DEBUG_ISP1020_SETUP + printk("qlogicisp : target 0x%02x\n", i); + printk("qlogicisp : device flags=0x%02x\n", + hostdata->dev_param[i].device_flags); + printk("qlogicisp : execution throttle=%d\n", + hostdata->dev_param[i].execution_throttle); + printk("qlogicisp : synchronous period=%d\n", + hostdata->dev_param[i].synchronous_period); + printk("qlogicisp : synchronous offset=%d\n", + hostdata->dev_param[i].synchronous_offset); + printk("qlogicisp : device enable=%d\n", + hostdata->dev_param[i].device_enable); +#endif /* DEBUG_ISP1020_SETUP */ + } + + LEAVE("isp1020_get_defaults"); + + return 0; +} + + +#define ISP1020_NVRAM_LEN 0x40 +#define ISP1020_NVRAM_SIG1 0x5349 +#define ISP1020_NVRAM_SIG2 0x2050 + +static int isp1020_verify_nvram(struct Scsi_Host *host) +{ + int i; + u_short value; + u_char checksum = 0; + + for (i = 0; i < ISP1020_NVRAM_LEN; i++) { + value = isp1020_read_nvram_word(host, i); + + switch (i) { + case 0: + if (value != ISP1020_NVRAM_SIG1) return 0; + break; + case 1: + if (value != ISP1020_NVRAM_SIG2) return 0; + break; + case 2: + if ((value & 0xff) != 0x02) return 0; + break; + } + checksum += value & 0xff; + checksum += value >> 8; + } + + return (checksum == 0); +} + +#define NVRAM_DELAY() udelay(2) /* 2 microsecond delay */ + + +u_short isp1020_read_nvram_word(struct Scsi_Host *host, u_short byte) +{ + int i; + u_short value, output, input; + + byte &= 0x3f; byte |= 0x0180; + + for (i = 8; i >= 0; i--) { + output = ((byte >> i) & 0x1) ? 0x4 : 0x0; + isp_outw(output | 0x2, host, PCI_NVRAM); NVRAM_DELAY(); + isp_outw(output | 0x3, host, PCI_NVRAM); NVRAM_DELAY(); + isp_outw(output | 0x2, host, PCI_NVRAM); NVRAM_DELAY(); + } + + for (i = 0xf, value = 0; i >= 0; i--) { + value <<= 1; + isp_outw(0x3, host, PCI_NVRAM); NVRAM_DELAY(); + input = isp_inw(host, PCI_NVRAM); NVRAM_DELAY(); + isp_outw(0x2, host, PCI_NVRAM); NVRAM_DELAY(); + if (input & 0x8) value |= 1; + } + + isp_outw(0x0, host, PCI_NVRAM); NVRAM_DELAY(); + + return value; +} + +#endif /* USE_NVRAM_DEFAULTS */ + + +static int isp1020_set_defaults(struct Scsi_Host *host) +{ + struct isp1020_hostdata *hostdata = + (struct isp1020_hostdata *) host->hostdata; + int i; + + ENTER("isp1020_set_defaults"); + + hostdata->host_param.fifo_threshold = 2; + hostdata->host_param.host_adapter_enable = 1; + hostdata->host_param.initiator_scsi_id = 7; + hostdata->host_param.bus_reset_delay = 3; + hostdata->host_param.retry_count = 0; + hostdata->host_param.retry_delay = 1; + hostdata->host_param.async_data_setup_time = 6; + hostdata->host_param.req_ack_active_negation = 1; + hostdata->host_param.data_line_active_negation = 1; + hostdata->host_param.data_dma_burst_enable = 1; + hostdata->host_param.command_dma_burst_enable = 1; + hostdata->host_param.tag_aging = 8; + hostdata->host_param.selection_timeout = 250; + hostdata->host_param.max_queue_depth = 256; + + for (i = 0; i < MAX_TARGETS; i++) { + hostdata->dev_param[i].device_flags = 0xfd; + hostdata->dev_param[i].execution_throttle = 16; + hostdata->dev_param[i].synchronous_period = 25; + hostdata->dev_param[i].synchronous_offset = 12; + hostdata->dev_param[i].device_enable = 1; + } + + LEAVE("isp1020_set_defaults"); + + return 0; +} + + +static int isp1020_load_parameters(struct Scsi_Host *host) +{ + int i, k; +#ifdef CONFIG_QL_ISP_A64 + u_long queue_addr; + u_short param[8]; +#else + u_int queue_addr; + u_short param[6]; +#endif + u_short isp_cfg1, hwrev; + struct isp1020_hostdata *hostdata = + (struct isp1020_hostdata *) host->hostdata; + + ENTER("isp1020_load_parameters"); + + hwrev = isp_inw(host, ISP_CFG0) & ISP_CFG0_HWMSK; + isp_cfg1 = ISP_CFG1_F64 | ISP_CFG1_BENAB; + if (hwrev == ISP_CFG0_1040A) { + /* Busted fifo, says mjacob. */ + isp_cfg1 &= ISP_CFG1_BENAB; + } + + isp_outw(isp_inw(host, ISP_CFG1) | isp_cfg1, host, ISP_CFG1); + isp_outw(isp_inw(host, CDMA_CONF) | DMA_CONF_BENAB, host, CDMA_CONF); + isp_outw(isp_inw(host, DDMA_CONF) | DMA_CONF_BENAB, host, DDMA_CONF); + + param[0] = MBOX_SET_INIT_SCSI_ID; + param[1] = hostdata->host_param.initiator_scsi_id; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set initiator id failure\n"); + return 1; + } + + param[0] = MBOX_SET_RETRY_COUNT; + param[1] = hostdata->host_param.retry_count; + param[2] = hostdata->host_param.retry_delay; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set retry count failure\n"); + return 1; + } + + param[0] = MBOX_SET_ASYNC_DATA_SETUP_TIME; + param[1] = hostdata->host_param.async_data_setup_time; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : async data setup time failure\n"); + return 1; + } + + param[0] = MBOX_SET_ACTIVE_NEG_STATE; + param[1] = (hostdata->host_param.req_ack_active_negation << 4) + | (hostdata->host_param.data_line_active_negation << 5); + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set active negation state failure\n"); + return 1; + } + + param[0] = MBOX_SET_PCI_CONTROL_PARAMS; + param[1] = hostdata->host_param.data_dma_burst_enable << 1; + param[2] = hostdata->host_param.command_dma_burst_enable << 1; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set pci control parameter failure\n"); + return 1; + } + + param[0] = MBOX_SET_TAG_AGE_LIMIT; + param[1] = hostdata->host_param.tag_aging; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set tag age limit failure\n"); + return 1; + } + + param[0] = MBOX_SET_SELECT_TIMEOUT; + param[1] = hostdata->host_param.selection_timeout; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set selection timeout failure\n"); + return 1; + } + + for (i = 0; i < MAX_TARGETS; i++) { + + if (!hostdata->dev_param[i].device_enable) + continue; + + param[0] = MBOX_SET_TARGET_PARAMS; + param[1] = i << 8; + param[2] = hostdata->dev_param[i].device_flags << 8; + param[3] = (hostdata->dev_param[i].synchronous_offset << 8) + | hostdata->dev_param[i].synchronous_period; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set target parameter failure\n"); + return 1; + } + + for (k = 0; k < MAX_LUNS; k++) { + + param[0] = MBOX_SET_DEV_QUEUE_PARAMS; + param[1] = (i << 8) | k; + param[2] = hostdata->host_param.max_queue_depth; + param[3] = hostdata->dev_param[i].execution_throttle; + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set device queue " + "parameter failure\n"); + return 1; + } + } + } + + queue_addr = hostdata->res_dma; +#ifdef CONFIG_QL_ISP_A64 + param[0] = MBOX_CMD_INIT_RESPONSE_QUEUE_64; +#else + param[0] = MBOX_INIT_RES_QUEUE; +#endif + param[1] = RES_QUEUE_LEN + 1; + param[2] = (u_short) (queue_addr >> 16); + param[3] = (u_short) (queue_addr & 0xffff); + param[4] = 0; + param[5] = 0; +#ifdef CONFIG_QL_ISP_A64 + param[6] = (u_short) (queue_addr >> 48); + param[7] = (u_short) (queue_addr >> 32); +#endif + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set response queue failure\n"); + return 1; + } + + queue_addr = hostdata->req_dma; +#ifdef CONFIG_QL_ISP_A64 + param[0] = MBOX_CMD_INIT_REQUEST_QUEUE_64; +#else + param[0] = MBOX_INIT_REQ_QUEUE; +#endif + param[1] = QLOGICISP_REQ_QUEUE_LEN + 1; + param[2] = (u_short) (queue_addr >> 16); + param[3] = (u_short) (queue_addr & 0xffff); + param[4] = 0; + +#ifdef CONFIG_QL_ISP_A64 + param[5] = 0; + param[6] = (u_short) (queue_addr >> 48); + param[7] = (u_short) (queue_addr >> 32); +#endif + + isp1020_mbox_command(host, param); + + if (param[0] != MBOX_COMMAND_COMPLETE) { + printk("qlogicisp : set request queue failure\n"); + return 1; + } + + LEAVE("isp1020_load_parameters"); + + return 0; +} + + +/* + * currently, this is only called during initialization or abort/reset, + * at which times interrupts are disabled, so polling is OK, I guess... + */ +static int isp1020_mbox_command(struct Scsi_Host *host, u_short param[]) +{ + int loop_count; + + if (mbox_param[param[0]] == 0) + return 1; + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && isp_inw(host, HOST_HCCR) & 0x0080) { + barrier(); + cpu_relax(); + } + if (!loop_count) + printk("qlogicisp: mbox_command loop timeout #1\n"); + + switch(mbox_param[param[0]] >> 4) { + case 8: isp_outw(param[7], host, MBOX7); + case 7: isp_outw(param[6], host, MBOX6); + case 6: isp_outw(param[5], host, MBOX5); + case 5: isp_outw(param[4], host, MBOX4); + case 4: isp_outw(param[3], host, MBOX3); + case 3: isp_outw(param[2], host, MBOX2); + case 2: isp_outw(param[1], host, MBOX1); + case 1: isp_outw(param[0], host, MBOX0); + } + + isp_outw(0x0, host, PCI_SEMAPHORE); + isp_outw(HCCR_CLEAR_RISC_INTR, host, HOST_HCCR); + isp_outw(HCCR_SET_HOST_INTR, host, HOST_HCCR); + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && !(isp_inw(host, PCI_INTF_STS) & 0x04)) { + barrier(); + cpu_relax(); + } + if (!loop_count) + printk("qlogicisp: mbox_command loop timeout #2\n"); + + loop_count = DEFAULT_LOOP_COUNT; + while (--loop_count && isp_inw(host, MBOX0) == 0x04) { + barrier(); + cpu_relax(); + } + if (!loop_count) + printk("qlogicisp: mbox_command loop timeout #3\n"); + + switch(mbox_param[param[0]] & 0xf) { + case 8: param[7] = isp_inw(host, MBOX7); + case 7: param[6] = isp_inw(host, MBOX6); + case 6: param[5] = isp_inw(host, MBOX5); + case 5: param[4] = isp_inw(host, MBOX4); + case 4: param[3] = isp_inw(host, MBOX3); + case 3: param[2] = isp_inw(host, MBOX2); + case 2: param[1] = isp_inw(host, MBOX1); + case 1: param[0] = isp_inw(host, MBOX0); + } + + isp_outw(0x0, host, PCI_SEMAPHORE); + isp_outw(HCCR_CLEAR_RISC_INTR, host, HOST_HCCR); + + return 0; +} + + +#if DEBUG_ISP1020_INTR + +void isp1020_print_status_entry(struct Status_Entry *status) +{ + int i; + + printk("qlogicisp : entry count = 0x%02x, type = 0x%02x, flags = 0x%02x\n", + status->hdr.entry_cnt, status->hdr.entry_type, status->hdr.flags); + printk("qlogicisp : scsi status = 0x%04x, completion status = 0x%04x\n", + le16_to_cpu(status->scsi_status), le16_to_cpu(status->completion_status)); + printk("qlogicisp : state flags = 0x%04x, status flags = 0x%04x\n", + le16_to_cpu(status->state_flags), le16_to_cpu(status->status_flags)); + printk("qlogicisp : time = 0x%04x, request sense length = 0x%04x\n", + le16_to_cpu(status->time), le16_to_cpu(status->req_sense_len)); + printk("qlogicisp : residual transfer length = 0x%08x\n", + le32_to_cpu(status->residual)); + + for (i = 0; i < le16_to_cpu(status->req_sense_len); i++) + printk("qlogicisp : sense data = 0x%02x\n", status->req_sense_data[i]); +} + +#endif /* DEBUG_ISP1020_INTR */ + + +#if DEBUG_ISP1020 + +void isp1020_print_scsi_cmd(Scsi_Cmnd *cmd) +{ + int i; + + printk("qlogicisp : target = 0x%02x, lun = 0x%02x, cmd_len = 0x%02x\n", + cmd->target, cmd->lun, cmd->cmd_len); + printk("qlogicisp : command = "); + for (i = 0; i < cmd->cmd_len; i++) + printk("0x%02x ", cmd->cmnd[i]); + printk("\n"); +} + +#endif /* DEBUG_ISP1020 */ + +MODULE_LICENSE("GPL"); + +static Scsi_Host_Template driver_template = { + .detect = isp1020_detect, + .release = isp1020_release, + .info = isp1020_info, + .queuecommand = isp1020_queuecommand, + .bios_param = isp1020_biosparam, + .can_queue = QLOGICISP_REQ_QUEUE_LEN, + .this_id = -1, + .sg_tablesize = QLOGICISP_MAX_SG(QLOGICISP_REQ_QUEUE_LEN), + .cmd_per_lun = 1, + .use_clustering = DISABLE_CLUSTERING, +}; +#include "scsi_module.c" |