drivers/block/cciss_cmd.h

   1 #ifndef CCISS_CMD_H
   2 #define CCISS_CMD_H
   3
   4 #include <linux/cciss_defs.h>
   5
   6 /* DEFINES */
   7 #define CISS_VERSION "1.00"
   8
   9 /* general boundary definitions */
  10 #define MAXSGENTRIES            32
  11 #define CCISS_SG_CHAIN          0x80000000
  12 #define MAXREPLYQS              256
  13
  14 /* Unit Attentions ASC's as defined for the MSA2012sa */
  15 #define POWER_OR_RESET                  0x29
  16 #define STATE_CHANGED                   0x2a
  17 #define UNIT_ATTENTION_CLEARED          0x2f
  18 #define LUN_FAILED                      0x3e
  19 #define REPORT_LUNS_CHANGED             0x3f
  20
  21 /* Unit Attentions ASCQ's as defined for the MSA2012sa */
  22
  23         /* These ASCQ's defined for ASC = POWER_OR_RESET */
  24 #define POWER_ON_RESET                  0x00
  25 #define POWER_ON_REBOOT                 0x01
  26 #define SCSI_BUS_RESET                  0x02
  27 #define MSA_TARGET_RESET                0x03
  28 #define CONTROLLER_FAILOVER             0x04
  29 #define TRANSCEIVER_SE                  0x05
  30 #define TRANSCEIVER_LVD                 0x06
  31
  32         /* These ASCQ's defined for ASC = STATE_CHANGED */
  33 #define RESERVATION_PREEMPTED           0x03
  34 #define ASYM_ACCESS_CHANGED             0x06
  35 #define LUN_CAPACITY_CHANGED            0x09
  36
  37 /* config space register offsets */
  38 #define CFG_VENDORID            0x00
  39 #define CFG_DEVICEID            0x02
  40 #define CFG_I2OBAR              0x10
  41 #define CFG_MEM1BAR             0x14
  42
  43 /* i2o space register offsets */
  44 #define I2O_IBDB_SET            0x20
  45 #define I2O_IBDB_CLEAR          0x70
  46 #define I2O_INT_STATUS          0x30
  47 #define I2O_INT_MASK            0x34
  48 #define I2O_IBPOST_Q            0x40
  49 #define I2O_OBPOST_Q            0x44
  50 #define I2O_DMA1_CFG            0x214
  51
  52 /* Configuration Table */
  53 #define CFGTBL_ChangeReq        0x00000001l
  54 #define CFGTBL_AccCmds          0x00000001l
  55
  56 #define CFGTBL_Trans_Simple     0x00000002l
  57
  58 #define CFGTBL_BusType_Ultra2   0x00000001l
  59 #define CFGTBL_BusType_Ultra3   0x00000002l
  60 #define CFGTBL_BusType_Fibre1G  0x00000100l
  61 #define CFGTBL_BusType_Fibre2G  0x00000200l
  62 typedef struct _vals32
  63 {
  64         __u32   lower;
  65         __u32   upper;
  66 } vals32;
  67
  68 typedef union _u64bit
  69 {
  70    vals32       val32;
  71    __u64        val;
  72 } u64bit;
  73
  74 /* Type defs used in the following structs */
  75 #define QWORD vals32
  76
  77 /* STRUCTURES */
  78 #define CISS_MAX_PHYS_LUN       1024
  79 /* SCSI-3 Cmmands */
  80
  81 #pragma pack(1)
  82
  83 #define CISS_INQUIRY 0x12
  84 /* Date returned */
  85 typedef struct _InquiryData_struct
  86 {
  87   BYTE data_byte[36];
  88 } InquiryData_struct;
  89
  90 #define CISS_REPORT_LOG 0xc2    /* Report Logical LUNs */
  91 #define CISS_REPORT_PHYS 0xc3   /* Report Physical LUNs */
  92 /* Data returned */
  93 typedef struct _ReportLUNdata_struct
  94 {
  95   BYTE LUNListLength[4];
  96   DWORD reserved;
  97   BYTE LUN[CISS_MAX_LUN][8];
  98 } ReportLunData_struct;
  99
 100 #define CCISS_READ_CAPACITY 0x25 /* Read Capacity */
 101 typedef struct _ReadCapdata_struct
 102 {
 103   BYTE total_size[4];   /* Total size in blocks */
 104   BYTE block_size[4];   /* Size of blocks in bytes */
 105 } ReadCapdata_struct;
 106
 107 #define CCISS_READ_CAPACITY_16 0x9e /* Read Capacity 16 */
 108
 109 /* service action to differentiate a 16 byte read capacity from
 110    other commands that use the 0x9e SCSI op code */
 111
 112 #define CCISS_READ_CAPACITY_16_SERVICE_ACT 0x10
 113
 114 typedef struct _ReadCapdata_struct_16
 115 {
 116         BYTE total_size[8];   /* Total size in blocks */
 117         BYTE block_size[4];   /* Size of blocks in bytes */
 118         BYTE prot_en:1;       /* protection enable bit */
 119         BYTE rto_en:1;        /* reference tag own enable bit */
 120         BYTE reserved:6;      /* reserved bits */
 121         BYTE reserved2[18];   /* reserved bytes per spec */
 122 } ReadCapdata_struct_16;
 123
 124 /* Define the supported read/write commands for cciss based controllers */
 125
 126 #define CCISS_READ_10   0x28    /* Read(10)  */
 127 #define CCISS_WRITE_10  0x2a    /* Write(10) */
 128 #define CCISS_READ_16   0x88    /* Read(16)  */
 129 #define CCISS_WRITE_16  0x8a    /* Write(16) */
 130
 131 /* Define the CDB lengths supported by cciss based controllers */
 132
 133 #define CDB_LEN10       10
 134 #define CDB_LEN16       16
 135
 136 /* BMIC commands */
 137 #define BMIC_READ 0x26
 138 #define BMIC_WRITE 0x27
 139 #define BMIC_CACHE_FLUSH 0xc2
 140 #define CCISS_CACHE_FLUSH 0x01  /* C2 was already being used by CCISS */
 141
 142 /* Command List Structure */
 143 #define CTLR_LUNID "\0\0\0\0\0\0\0\0"
 144
 145 typedef struct _CommandListHeader_struct {
 146   BYTE              ReplyQueue;
 147   BYTE              SGList;
 148   HWORD             SGTotal;
 149   QWORD             Tag;
 150   LUNAddr_struct    LUN;
 151 } CommandListHeader_struct;
 152 typedef struct _ErrDescriptor_struct {
 153   QWORD  Addr;
 154   DWORD  Len;
 155 } ErrDescriptor_struct;
 156 typedef struct _SGDescriptor_struct {
 157   QWORD  Addr;
 158   DWORD  Len;
 159   DWORD  Ext;
 160 } SGDescriptor_struct;
 161
 162 /* Command types */
 163 #define CMD_RWREQ       0x00
 164 #define CMD_IOCTL_PEND  0x01
 165 #define CMD_SCSI        0x03
 166 #define CMD_MSG_DONE    0x04
 167 #define CMD_MSG_TIMEOUT 0x05
 168 #define CMD_MSG_STALE   0xff
 169
 170 /* This structure needs to be divisible by COMMANDLIST_ALIGNMENT
 171  * because low bits of the address are used to to indicate that
 172  * whether the tag contains an index or an address.  PAD_32 and
 173  * PAD_64 can be adjusted independently as needed for 32-bit
 174  * and 64-bits systems.
 175  */
 176 #define COMMANDLIST_ALIGNMENT (8)
 177 #define IS_64_BIT ((sizeof(long) - 4)/4)
 178 #define IS_32_BIT (!IS_64_BIT)
 179 #define PAD_32 (0)
 180 #define PAD_64 (4)
 181 #define PADSIZE (IS_32_BIT * PAD_32 + IS_64_BIT * PAD_64)
 182 typedef struct _CommandList_struct {
 183   CommandListHeader_struct Header;
 184   RequestBlock_struct      Request;
 185   ErrDescriptor_struct     ErrDesc;
 186   SGDescriptor_struct      SG[MAXSGENTRIES];
 187         /* information associated with the command */
 188   __u32                    busaddr; /* physical address of this record */
 189   ErrorInfo_struct *       err_info; /* pointer to the allocated mem */
 190   int                      ctlr;
 191   int                      cmd_type;
 192   long                     cmdindex;
 193   struct hlist_node list;
 194   struct request *         rq;
 195   struct completion *waiting;
 196   int    retry_count;
 197   void * scsi_cmd;
 198   char   pad[PADSIZE];
 199 } CommandList_struct;
 200
 201 /* Configuration Table Structure */
 202 typedef struct _HostWrite_struct {
 203   DWORD TransportRequest;
 204   DWORD Reserved;
 205   DWORD CoalIntDelay;
 206   DWORD CoalIntCount;
 207 } HostWrite_struct;
 208
 209 typedef struct _CfgTable_struct {
 210   BYTE             Signature[4];
 211   DWORD            SpecValence;
 212   DWORD            TransportSupport;
 213   DWORD            TransportActive;
 214   HostWrite_struct HostWrite;
 215   DWORD            CmdsOutMax;
 216   DWORD            BusTypes;
 217   DWORD            Reserved;
 218   BYTE             ServerName[16];
 219   DWORD            HeartBeat;
 220   DWORD            SCSI_Prefetch;
 221   DWORD            MaxSGElements;
 222   DWORD            MaxLogicalUnits;
 223   DWORD            MaxPhysicalDrives;
 224   DWORD            MaxPhysicalDrivesPerLogicalUnit;
 225 } CfgTable_struct;
 226 #pragma pack()
 227 #endif /* CCISS_CMD_H */