diff options
| author | Matt Gates <matthew.gates@hp.com> | 2014-02-18 13:55:17 -0600 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2014-03-15 10:19:02 -0700 |
| commit | e1f7de0cdd68d246d7008241cd9e443a54f880a8 (patch) | |
| tree | 060525e7cdc5f2f86f9fcf4bb5ee3a22861c9e8f /drivers/scsi/hpsa_cmd.h | |
| parent | e1d9cbfa09cdd39c4821777a6980dd643e5493ad (diff) | |
| download | linux-e1f7de0cdd68d246d7008241cd9e443a54f880a8.tar.bz2 | |
[SCSI] hpsa: add support for 'fastpath' i/o
For certain i/o's to certain devices (unmasked physical disks) we
can bypass the RAID stack firmware and do the i/o to the device
directly and it will be faster.
Signed-off-by: Matt Gates <matthew.gates@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/hpsa_cmd.h')
| -rw-r--r-- | drivers/scsi/hpsa_cmd.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h index 22cf799a2a1d..e682d2e6b387 100644 --- a/drivers/scsi/hpsa_cmd.h +++ b/drivers/scsi/hpsa_cmd.h @@ -129,6 +129,7 @@ #define CFGTBL_Trans_Simple 0x00000002l #define CFGTBL_Trans_Performant 0x00000004l +#define CFGTBL_Trans_io_accel1 0x00000080l #define CFGTBL_Trans_use_short_tags 0x20000000l #define CFGTBL_Trans_enable_directed_msix (1 << 30) @@ -285,6 +286,7 @@ struct ErrorInfo { /* Command types */ #define CMD_IOCTL_PEND 0x01 #define CMD_SCSI 0x03 +#define CMD_IOACCEL1 0x04 #define DIRECT_LOOKUP_SHIFT 5 #define DIRECT_LOOKUP_BIT 0x10 @@ -335,6 +337,63 @@ struct CommandList { u8 pad[COMMANDLIST_PAD]; }; +/* Max S/G elements in I/O accelerator command */ +#define IOACCEL1_MAXSGENTRIES 24 + +/* + * Structure for I/O accelerator (mode 1) commands. + * Note that this structure must be 128-byte aligned in size. + */ +struct io_accel1_cmd { + u16 dev_handle; /* 0x00 - 0x01 */ + u8 reserved1; /* 0x02 */ + u8 function; /* 0x03 */ + u8 reserved2[8]; /* 0x04 - 0x0B */ + u32 err_info; /* 0x0C - 0x0F */ + u8 reserved3[2]; /* 0x10 - 0x11 */ + u8 err_info_len; /* 0x12 */ + u8 reserved4; /* 0x13 */ + u8 sgl_offset; /* 0x14 */ + u8 reserved5[7]; /* 0x15 - 0x1B */ + u32 transfer_len; /* 0x1C - 0x1F */ + u8 reserved6[4]; /* 0x20 - 0x23 */ + u16 io_flags; /* 0x24 - 0x25 */ + u8 reserved7[14]; /* 0x26 - 0x33 */ + u8 LUN[8]; /* 0x34 - 0x3B */ + u32 control; /* 0x3C - 0x3F */ + u8 CDB[16]; /* 0x40 - 0x4F */ + u8 reserved8[16]; /* 0x50 - 0x5F */ + u16 host_context_flags; /* 0x60 - 0x61 */ + u16 timeout_sec; /* 0x62 - 0x63 */ + u8 ReplyQueue; /* 0x64 */ + u8 reserved9[3]; /* 0x65 - 0x67 */ + struct vals32 Tag; /* 0x68 - 0x6F */ + struct vals32 host_addr; /* 0x70 - 0x77 */ + u8 CISS_LUN[8]; /* 0x78 - 0x7F */ + struct SGDescriptor SG[IOACCEL1_MAXSGENTRIES]; +}; + +#define IOACCEL1_FUNCTION_SCSIIO 0x00 +#define IOACCEL1_SGLOFFSET 32 + +#define IOACCEL1_IOFLAGS_IO_REQ 0x4000 +#define IOACCEL1_IOFLAGS_CDBLEN_MASK 0x001F +#define IOACCEL1_IOFLAGS_CDBLEN_MAX 16 + +#define IOACCEL1_CONTROL_NODATAXFER 0x00000000 +#define IOACCEL1_CONTROL_DATA_OUT 0x01000000 +#define IOACCEL1_CONTROL_DATA_IN 0x02000000 +#define IOACCEL1_CONTROL_TASKPRIO_MASK 0x00007800 +#define IOACCEL1_CONTROL_TASKPRIO_SHIFT 11 +#define IOACCEL1_CONTROL_SIMPLEQUEUE 0x00000000 +#define IOACCEL1_CONTROL_HEADOFQUEUE 0x00000100 +#define IOACCEL1_CONTROL_ORDEREDQUEUE 0x00000200 +#define IOACCEL1_CONTROL_ACA 0x00000400 + +#define IOACCEL1_HCFLAGS_CISS_FORMAT 0x0013 + +#define IOACCEL1_BUSADDR_CMDTYPE 0x00000060 + /* Configuration Table Structure */ struct HostWrite { u32 TransportRequest; @@ -346,6 +405,7 @@ struct HostWrite { #define SIMPLE_MODE 0x02 #define PERFORMANT_MODE 0x04 #define MEMQ_MODE 0x08 +#define IOACCEL_MODE_1 0x80 struct CfgTable { u8 Signature[4]; |