summaryrefslogtreecommitdiffstats
path: root/drivers/block/cciss_cmd.h
blob: b50a9b261b8526d95a4d4208ef3e85b8db2f4484 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
#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            32
#define CCISS_SG_CHAIN          0x80000000
#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

/* Unit Attentions ASC's as defined for the MSA2012sa */
#define POWER_OR_RESET			0x29
#define STATE_CHANGED			0x2a
#define UNIT_ATTENTION_CLEARED		0x2f
#define LUN_FAILED			0x3e
#define REPORT_LUNS_CHANGED		0x3f

/* Unit Attentions ASCQ's as defined for the MSA2012sa */

	/* These ASCQ's defined for ASC = POWER_OR_RESET */
#define POWER_ON_RESET			0x00
#define POWER_ON_REBOOT			0x01
#define SCSI_BUS_RESET			0x02
#define MSA_TARGET_RESET		0x03
#define CONTROLLER_FAILOVER		0x04
#define TRANSCEIVER_SE			0x05
#define TRANSCEIVER_LVD			0x06

	/* These ASCQ's defined for ASC = STATE_CHANGED */
#define RESERVATION_PREEMPTED		0x03
#define ASYM_ACCESS_CHANGED		0x06
#define LUN_CAPACITY_CHANGED		0x09

//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
#define I2O_DMA1_CFG		0x214

//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	1024
#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;

#define CCISS_READ_CAPACITY_16 0x9e /* Read Capacity 16 */

/* service action to differentiate a 16 byte read capacity from
   other commands that use the 0x9e SCSI op code */

#define CCISS_READ_CAPACITY_16_SERVICE_ACT 0x10

typedef struct _ReadCapdata_struct_16
{
	BYTE total_size[8];   /* Total size in blocks */
	BYTE block_size[4];   /* Size of blocks in bytes */
	BYTE prot_en:1;       /* protection enable bit */
	BYTE rto_en:1;        /* reference tag own enable bit */
	BYTE reserved:6;      /* reserved bits */
	BYTE reserved2[18];   /* reserved bytes per spec */
} ReadCapdata_struct_16;

/* Define the supported read/write commands for cciss based controllers */

#define CCISS_READ_10   0x28    /* Read(10)  */
#define CCISS_WRITE_10  0x2a    /* Write(10) */
#define CCISS_READ_16   0x88    /* Read(16)  */
#define CCISS_WRITE_16  0x8a    /* Write(16) */

/* Define the CDB lengths supported by cciss based controllers */

#define CDB_LEN10	10
#define CDB_LEN16	16

// 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;

#define CTLR_LUNID "\0\0\0\0\0\0\0\0"

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
#define CMD_MSG_STALE	0xff

/* 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 hlist_node list;
  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;
  DWORD            MaxSGElements;
  DWORD            MaxLogicalUnits;
  DWORD            MaxPhysicalDrives;
  DWORD            MaxPhysicalDrivesPerLogicalUnit;
} CfgTable_struct;
#pragma pack()	 
#endif // CCISS_CMD_H