33079b2197
This patch changes the way we complete commands. In the old method when we got a completion we searched our command list from the top until we find it. This method uses a tag associated with each command (not SCSI command tagging) to index us directly to the completed command. This helps performance. Signed-off-by: Don Brace <dab@hp.com> Signed-off-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
276 lines
7.2 KiB
C
276 lines
7.2 KiB
C
#ifndef CCISS_CMD_H
|
|
#define CCISS_CMD_H
|
|
//###########################################################################
|
|
//DEFINES
|
|
//###########################################################################
|
|
#define CISS_VERSION "1.00"
|
|
|
|
//general boundary defintions
|
|
#define SENSEINFOBYTES 32//note that this value may vary between host implementations
|
|
#define MAXSGENTRIES 31
|
|
#define MAXREPLYQS 256
|
|
|
|
//Command Status value
|
|
#define CMD_SUCCESS 0x0000
|
|
#define CMD_TARGET_STATUS 0x0001
|
|
#define CMD_DATA_UNDERRUN 0x0002
|
|
#define CMD_DATA_OVERRUN 0x0003
|
|
#define CMD_INVALID 0x0004
|
|
#define CMD_PROTOCOL_ERR 0x0005
|
|
#define CMD_HARDWARE_ERR 0x0006
|
|
#define CMD_CONNECTION_LOST 0x0007
|
|
#define CMD_ABORTED 0x0008
|
|
#define CMD_ABORT_FAILED 0x0009
|
|
#define CMD_UNSOLICITED_ABORT 0x000A
|
|
#define CMD_TIMEOUT 0x000B
|
|
#define CMD_UNABORTABLE 0x000C
|
|
|
|
//transfer direction
|
|
#define XFER_NONE 0x00
|
|
#define XFER_WRITE 0x01
|
|
#define XFER_READ 0x02
|
|
#define XFER_RSVD 0x03
|
|
|
|
//task attribute
|
|
#define ATTR_UNTAGGED 0x00
|
|
#define ATTR_SIMPLE 0x04
|
|
#define ATTR_HEADOFQUEUE 0x05
|
|
#define ATTR_ORDERED 0x06
|
|
#define ATTR_ACA 0x07
|
|
|
|
//cdb type
|
|
#define TYPE_CMD 0x00
|
|
#define TYPE_MSG 0x01
|
|
|
|
//config space register offsets
|
|
#define CFG_VENDORID 0x00
|
|
#define CFG_DEVICEID 0x02
|
|
#define CFG_I2OBAR 0x10
|
|
#define CFG_MEM1BAR 0x14
|
|
|
|
//i2o space register offsets
|
|
#define I2O_IBDB_SET 0x20
|
|
#define I2O_IBDB_CLEAR 0x70
|
|
#define I2O_INT_STATUS 0x30
|
|
#define I2O_INT_MASK 0x34
|
|
#define I2O_IBPOST_Q 0x40
|
|
#define I2O_OBPOST_Q 0x44
|
|
|
|
//Configuration Table
|
|
#define CFGTBL_ChangeReq 0x00000001l
|
|
#define CFGTBL_AccCmds 0x00000001l
|
|
|
|
#define CFGTBL_Trans_Simple 0x00000002l
|
|
|
|
#define CFGTBL_BusType_Ultra2 0x00000001l
|
|
#define CFGTBL_BusType_Ultra3 0x00000002l
|
|
#define CFGTBL_BusType_Fibre1G 0x00000100l
|
|
#define CFGTBL_BusType_Fibre2G 0x00000200l
|
|
typedef struct _vals32
|
|
{
|
|
__u32 lower;
|
|
__u32 upper;
|
|
} vals32;
|
|
|
|
typedef union _u64bit
|
|
{
|
|
vals32 val32;
|
|
__u64 val;
|
|
} u64bit;
|
|
|
|
// Type defs used in the following structs
|
|
#define BYTE __u8
|
|
#define WORD __u16
|
|
#define HWORD __u16
|
|
#define DWORD __u32
|
|
#define QWORD vals32
|
|
|
|
//###########################################################################
|
|
//STRUCTURES
|
|
//###########################################################################
|
|
#define CISS_MAX_LUN 16
|
|
#define CISS_MAX_PHYS_LUN 1024
|
|
// SCSI-3 Cmmands
|
|
|
|
#pragma pack(1)
|
|
|
|
#define CISS_INQUIRY 0x12
|
|
//Date returned
|
|
typedef struct _InquiryData_struct
|
|
{
|
|
BYTE data_byte[36];
|
|
} InquiryData_struct;
|
|
|
|
#define CISS_REPORT_LOG 0xc2 /* Report Logical LUNs */
|
|
#define CISS_REPORT_PHYS 0xc3 /* Report Physical LUNs */
|
|
// Data returned
|
|
typedef struct _ReportLUNdata_struct
|
|
{
|
|
BYTE LUNListLength[4];
|
|
DWORD reserved;
|
|
BYTE LUN[CISS_MAX_LUN][8];
|
|
} ReportLunData_struct;
|
|
|
|
#define CCISS_READ_CAPACITY 0x25 /* Read Capacity */
|
|
typedef struct _ReadCapdata_struct
|
|
{
|
|
BYTE total_size[4]; // Total size in blocks
|
|
BYTE block_size[4]; // Size of blocks in bytes
|
|
} ReadCapdata_struct;
|
|
|
|
// 12 byte commands not implemented in firmware yet.
|
|
// #define CCISS_READ 0xa8 // Read(12)
|
|
// #define CCISS_WRITE 0xaa // Write(12)
|
|
#define CCISS_READ 0x28 // Read(10)
|
|
#define CCISS_WRITE 0x2a // Write(10)
|
|
|
|
// BMIC commands
|
|
#define BMIC_READ 0x26
|
|
#define BMIC_WRITE 0x27
|
|
#define BMIC_CACHE_FLUSH 0xc2
|
|
#define CCISS_CACHE_FLUSH 0x01 //C2 was already being used by CCISS
|
|
|
|
//Command List Structure
|
|
typedef union _SCSI3Addr_struct {
|
|
struct {
|
|
BYTE Dev;
|
|
BYTE Bus:6;
|
|
BYTE Mode:2; // b00
|
|
} PeripDev;
|
|
struct {
|
|
BYTE DevLSB;
|
|
BYTE DevMSB:6;
|
|
BYTE Mode:2; // b01
|
|
} LogDev;
|
|
struct {
|
|
BYTE Dev:5;
|
|
BYTE Bus:3;
|
|
BYTE Targ:6;
|
|
BYTE Mode:2; // b10
|
|
} LogUnit;
|
|
} SCSI3Addr_struct;
|
|
|
|
typedef struct _PhysDevAddr_struct {
|
|
DWORD TargetId:24;
|
|
DWORD Bus:6;
|
|
DWORD Mode:2;
|
|
SCSI3Addr_struct Target[2]; //2 level target device addr
|
|
} PhysDevAddr_struct;
|
|
|
|
typedef struct _LogDevAddr_struct {
|
|
DWORD VolId:30;
|
|
DWORD Mode:2;
|
|
BYTE reserved[4];
|
|
} LogDevAddr_struct;
|
|
|
|
typedef union _LUNAddr_struct {
|
|
BYTE LunAddrBytes[8];
|
|
SCSI3Addr_struct SCSI3Lun[4];
|
|
PhysDevAddr_struct PhysDev;
|
|
LogDevAddr_struct LogDev;
|
|
} LUNAddr_struct;
|
|
|
|
typedef struct _CommandListHeader_struct {
|
|
BYTE ReplyQueue;
|
|
BYTE SGList;
|
|
HWORD SGTotal;
|
|
QWORD Tag;
|
|
LUNAddr_struct LUN;
|
|
} CommandListHeader_struct;
|
|
typedef struct _RequestBlock_struct {
|
|
BYTE CDBLen;
|
|
struct {
|
|
BYTE Type:3;
|
|
BYTE Attribute:3;
|
|
BYTE Direction:2;
|
|
} Type;
|
|
HWORD Timeout;
|
|
BYTE CDB[16];
|
|
} RequestBlock_struct;
|
|
typedef struct _ErrDescriptor_struct {
|
|
QWORD Addr;
|
|
DWORD Len;
|
|
} ErrDescriptor_struct;
|
|
typedef struct _SGDescriptor_struct {
|
|
QWORD Addr;
|
|
DWORD Len;
|
|
DWORD Ext;
|
|
} SGDescriptor_struct;
|
|
|
|
typedef union _MoreErrInfo_struct{
|
|
struct {
|
|
BYTE Reserved[3];
|
|
BYTE Type;
|
|
DWORD ErrorInfo;
|
|
}Common_Info;
|
|
struct{
|
|
BYTE Reserved[2];
|
|
BYTE offense_size;//size of offending entry
|
|
BYTE offense_num; //byte # of offense 0-base
|
|
DWORD offense_value;
|
|
}Invalid_Cmd;
|
|
}MoreErrInfo_struct;
|
|
typedef struct _ErrorInfo_struct {
|
|
BYTE ScsiStatus;
|
|
BYTE SenseLen;
|
|
HWORD CommandStatus;
|
|
DWORD ResidualCnt;
|
|
MoreErrInfo_struct MoreErrInfo;
|
|
BYTE SenseInfo[SENSEINFOBYTES];
|
|
} ErrorInfo_struct;
|
|
|
|
/* Command types */
|
|
#define CMD_RWREQ 0x00
|
|
#define CMD_IOCTL_PEND 0x01
|
|
#define CMD_SCSI 0x03
|
|
#define CMD_MSG_DONE 0x04
|
|
#define CMD_MSG_TIMEOUT 0x05
|
|
|
|
/* This structure needs to be divisible by 8 for new
|
|
* indexing method.
|
|
*/
|
|
#define PADSIZE (sizeof(long) - 4)
|
|
typedef struct _CommandList_struct {
|
|
CommandListHeader_struct Header;
|
|
RequestBlock_struct Request;
|
|
ErrDescriptor_struct ErrDesc;
|
|
SGDescriptor_struct SG[MAXSGENTRIES];
|
|
/* information associated with the command */
|
|
__u32 busaddr; /* physical address of this record */
|
|
ErrorInfo_struct * err_info; /* pointer to the allocated mem */
|
|
int ctlr;
|
|
int cmd_type;
|
|
long cmdindex;
|
|
struct _CommandList_struct *prev;
|
|
struct _CommandList_struct *next;
|
|
struct request * rq;
|
|
struct completion *waiting;
|
|
int retry_count;
|
|
void * scsi_cmd;
|
|
char pad[PADSIZE];
|
|
} CommandList_struct;
|
|
|
|
//Configuration Table Structure
|
|
typedef struct _HostWrite_struct {
|
|
DWORD TransportRequest;
|
|
DWORD Reserved;
|
|
DWORD CoalIntDelay;
|
|
DWORD CoalIntCount;
|
|
} HostWrite_struct;
|
|
|
|
typedef struct _CfgTable_struct {
|
|
BYTE Signature[4];
|
|
DWORD SpecValence;
|
|
DWORD TransportSupport;
|
|
DWORD TransportActive;
|
|
HostWrite_struct HostWrite;
|
|
DWORD CmdsOutMax;
|
|
DWORD BusTypes;
|
|
DWORD Reserved;
|
|
BYTE ServerName[16];
|
|
DWORD HeartBeat;
|
|
DWORD SCSI_Prefetch;
|
|
} CfgTable_struct;
|
|
#pragma pack()
|
|
#endif // CCISS_CMD_H
|