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0a9279cc7c
The MSA2012 cannot inform the driver of configuration changes since all management is out of band. This is a departure from any storage we have supported in the past. We need some way to detect changes on the topology so we implement this kernel thread. In some instances there's nothing we can do from the driver (like LUN failure) so just print out a message. In the case where logical volumes are added or deleted we call rebuild_lun_table to refresh the driver's view of the world. Signed-off-by: Mike Miller <mike.miller@hp.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
322 lines
8.6 KiB
C
322 lines
8.6 KiB
C
#ifndef CCISS_CMD_H
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#define CCISS_CMD_H
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//###########################################################################
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//DEFINES
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//###########################################################################
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#define CISS_VERSION "1.00"
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//general boundary defintions
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#define SENSEINFOBYTES 32//note that this value may vary between host implementations
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#define MAXSGENTRIES 31
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#define MAXREPLYQS 256
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//Command Status value
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#define CMD_SUCCESS 0x0000
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#define CMD_TARGET_STATUS 0x0001
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#define CMD_DATA_UNDERRUN 0x0002
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#define CMD_DATA_OVERRUN 0x0003
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#define CMD_INVALID 0x0004
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#define CMD_PROTOCOL_ERR 0x0005
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#define CMD_HARDWARE_ERR 0x0006
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#define CMD_CONNECTION_LOST 0x0007
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#define CMD_ABORTED 0x0008
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#define CMD_ABORT_FAILED 0x0009
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#define CMD_UNSOLICITED_ABORT 0x000A
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#define CMD_TIMEOUT 0x000B
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#define CMD_UNABORTABLE 0x000C
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/* Unit Attentions ASC's as defined for the MSA2012sa */
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#define POWER_OR_RESET 0x29
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#define STATE_CHANGED 0x2a
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#define UNIT_ATTENTION_CLEARED 0x2f
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#define LUN_FAILED 0x3e
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#define REPORT_LUNS_CHANGED 0x3f
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/* Unit Attentions ASCQ's as defined for the MSA2012sa */
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/* These ASCQ's defined for ASC = POWER_OR_RESET */
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#define POWER_ON_RESET 0x00
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#define POWER_ON_REBOOT 0x01
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#define SCSI_BUS_RESET 0x02
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#define MSA_TARGET_RESET 0x03
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#define CONTROLLER_FAILOVER 0x04
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#define TRANSCEIVER_SE 0x05
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#define TRANSCEIVER_LVD 0x06
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/* These ASCQ's defined for ASC = STATE_CHANGED */
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#define RESERVATION_PREEMPTED 0x03
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#define ASYM_ACCESS_CHANGED 0x06
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#define LUN_CAPACITY_CHANGED 0x09
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//transfer direction
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#define XFER_NONE 0x00
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#define XFER_WRITE 0x01
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#define XFER_READ 0x02
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#define XFER_RSVD 0x03
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//task attribute
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#define ATTR_UNTAGGED 0x00
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#define ATTR_SIMPLE 0x04
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#define ATTR_HEADOFQUEUE 0x05
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#define ATTR_ORDERED 0x06
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#define ATTR_ACA 0x07
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//cdb type
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#define TYPE_CMD 0x00
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#define TYPE_MSG 0x01
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//config space register offsets
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#define CFG_VENDORID 0x00
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#define CFG_DEVICEID 0x02
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#define CFG_I2OBAR 0x10
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#define CFG_MEM1BAR 0x14
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//i2o space register offsets
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#define I2O_IBDB_SET 0x20
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#define I2O_IBDB_CLEAR 0x70
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#define I2O_INT_STATUS 0x30
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#define I2O_INT_MASK 0x34
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#define I2O_IBPOST_Q 0x40
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#define I2O_OBPOST_Q 0x44
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#define I2O_DMA1_CFG 0x214
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//Configuration Table
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#define CFGTBL_ChangeReq 0x00000001l
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#define CFGTBL_AccCmds 0x00000001l
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#define CFGTBL_Trans_Simple 0x00000002l
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#define CFGTBL_BusType_Ultra2 0x00000001l
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#define CFGTBL_BusType_Ultra3 0x00000002l
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#define CFGTBL_BusType_Fibre1G 0x00000100l
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#define CFGTBL_BusType_Fibre2G 0x00000200l
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typedef struct _vals32
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{
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__u32 lower;
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__u32 upper;
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} vals32;
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typedef union _u64bit
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{
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vals32 val32;
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__u64 val;
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} u64bit;
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// Type defs used in the following structs
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#define BYTE __u8
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#define WORD __u16
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#define HWORD __u16
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#define DWORD __u32
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#define QWORD vals32
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//###########################################################################
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//STRUCTURES
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//###########################################################################
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#define CISS_MAX_LUN 1024
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#define CISS_MAX_PHYS_LUN 1024
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// SCSI-3 Cmmands
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#pragma pack(1)
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#define CISS_INQUIRY 0x12
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//Date returned
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typedef struct _InquiryData_struct
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{
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BYTE data_byte[36];
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} InquiryData_struct;
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#define CISS_REPORT_LOG 0xc2 /* Report Logical LUNs */
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#define CISS_REPORT_PHYS 0xc3 /* Report Physical LUNs */
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// Data returned
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typedef struct _ReportLUNdata_struct
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{
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BYTE LUNListLength[4];
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DWORD reserved;
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BYTE LUN[CISS_MAX_LUN][8];
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} ReportLunData_struct;
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#define CCISS_READ_CAPACITY 0x25 /* Read Capacity */
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typedef struct _ReadCapdata_struct
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{
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BYTE total_size[4]; // Total size in blocks
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BYTE block_size[4]; // Size of blocks in bytes
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} ReadCapdata_struct;
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#define CCISS_READ_CAPACITY_16 0x9e /* Read Capacity 16 */
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/* service action to differentiate a 16 byte read capacity from
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other commands that use the 0x9e SCSI op code */
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#define CCISS_READ_CAPACITY_16_SERVICE_ACT 0x10
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typedef struct _ReadCapdata_struct_16
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{
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BYTE total_size[8]; /* Total size in blocks */
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BYTE block_size[4]; /* Size of blocks in bytes */
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BYTE prot_en:1; /* protection enable bit */
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BYTE rto_en:1; /* reference tag own enable bit */
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BYTE reserved:6; /* reserved bits */
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BYTE reserved2[18]; /* reserved bytes per spec */
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} ReadCapdata_struct_16;
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/* Define the supported read/write commands for cciss based controllers */
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#define CCISS_READ_10 0x28 /* Read(10) */
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#define CCISS_WRITE_10 0x2a /* Write(10) */
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#define CCISS_READ_16 0x88 /* Read(16) */
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#define CCISS_WRITE_16 0x8a /* Write(16) */
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/* Define the CDB lengths supported by cciss based controllers */
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#define CDB_LEN10 10
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#define CDB_LEN16 16
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// BMIC commands
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#define BMIC_READ 0x26
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#define BMIC_WRITE 0x27
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#define BMIC_CACHE_FLUSH 0xc2
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#define CCISS_CACHE_FLUSH 0x01 //C2 was already being used by CCISS
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//Command List Structure
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typedef union _SCSI3Addr_struct {
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struct {
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BYTE Dev;
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BYTE Bus:6;
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BYTE Mode:2; // b00
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} PeripDev;
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struct {
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BYTE DevLSB;
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BYTE DevMSB:6;
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BYTE Mode:2; // b01
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} LogDev;
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struct {
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BYTE Dev:5;
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BYTE Bus:3;
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BYTE Targ:6;
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BYTE Mode:2; // b10
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} LogUnit;
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} SCSI3Addr_struct;
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typedef struct _PhysDevAddr_struct {
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DWORD TargetId:24;
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DWORD Bus:6;
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DWORD Mode:2;
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SCSI3Addr_struct Target[2]; //2 level target device addr
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} PhysDevAddr_struct;
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typedef struct _LogDevAddr_struct {
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DWORD VolId:30;
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DWORD Mode:2;
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BYTE reserved[4];
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} LogDevAddr_struct;
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typedef union _LUNAddr_struct {
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BYTE LunAddrBytes[8];
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SCSI3Addr_struct SCSI3Lun[4];
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PhysDevAddr_struct PhysDev;
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LogDevAddr_struct LogDev;
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} LUNAddr_struct;
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typedef struct _CommandListHeader_struct {
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BYTE ReplyQueue;
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BYTE SGList;
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HWORD SGTotal;
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QWORD Tag;
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LUNAddr_struct LUN;
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} CommandListHeader_struct;
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typedef struct _RequestBlock_struct {
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BYTE CDBLen;
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struct {
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BYTE Type:3;
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BYTE Attribute:3;
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BYTE Direction:2;
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} Type;
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HWORD Timeout;
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BYTE CDB[16];
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} RequestBlock_struct;
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typedef struct _ErrDescriptor_struct {
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QWORD Addr;
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DWORD Len;
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} ErrDescriptor_struct;
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typedef struct _SGDescriptor_struct {
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QWORD Addr;
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DWORD Len;
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DWORD Ext;
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} SGDescriptor_struct;
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typedef union _MoreErrInfo_struct{
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struct {
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BYTE Reserved[3];
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BYTE Type;
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DWORD ErrorInfo;
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}Common_Info;
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struct{
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BYTE Reserved[2];
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BYTE offense_size;//size of offending entry
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BYTE offense_num; //byte # of offense 0-base
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DWORD offense_value;
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}Invalid_Cmd;
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}MoreErrInfo_struct;
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typedef struct _ErrorInfo_struct {
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BYTE ScsiStatus;
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BYTE SenseLen;
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HWORD CommandStatus;
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DWORD ResidualCnt;
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MoreErrInfo_struct MoreErrInfo;
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BYTE SenseInfo[SENSEINFOBYTES];
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} ErrorInfo_struct;
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/* Command types */
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#define CMD_RWREQ 0x00
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#define CMD_IOCTL_PEND 0x01
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#define CMD_SCSI 0x03
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#define CMD_MSG_DONE 0x04
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#define CMD_MSG_TIMEOUT 0x05
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/* This structure needs to be divisible by 8 for new
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* indexing method.
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*/
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#define PADSIZE (sizeof(long) - 4)
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typedef struct _CommandList_struct {
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CommandListHeader_struct Header;
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RequestBlock_struct Request;
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ErrDescriptor_struct ErrDesc;
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SGDescriptor_struct SG[MAXSGENTRIES];
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/* information associated with the command */
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__u32 busaddr; /* physical address of this record */
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ErrorInfo_struct * err_info; /* pointer to the allocated mem */
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int ctlr;
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int cmd_type;
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long cmdindex;
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struct hlist_node list;
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struct request * rq;
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struct completion *waiting;
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int retry_count;
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void * scsi_cmd;
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char pad[PADSIZE];
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} CommandList_struct;
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//Configuration Table Structure
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typedef struct _HostWrite_struct {
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DWORD TransportRequest;
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DWORD Reserved;
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DWORD CoalIntDelay;
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DWORD CoalIntCount;
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} HostWrite_struct;
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typedef struct _CfgTable_struct {
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BYTE Signature[4];
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DWORD SpecValence;
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DWORD TransportSupport;
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DWORD TransportActive;
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HostWrite_struct HostWrite;
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DWORD CmdsOutMax;
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DWORD BusTypes;
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DWORD Reserved;
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BYTE ServerName[16];
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DWORD HeartBeat;
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DWORD SCSI_Prefetch;
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} CfgTable_struct;
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#pragma pack()
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#endif // CCISS_CMD_H
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