linux/drivers/scsi/3w-sas.h
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   1/*
   2   3w-sas.h -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux.
   3
   4   Written By: Adam Radford <linuxraid@lsi.com>
   5
   6   Copyright (C) 2009 LSI Corporation.
   7
   8   This program is free software; you can redistribute it and/or modify
   9   it under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; version 2 of the License.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   NO WARRANTY
  18   THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  19   CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  20   LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  21   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  22   solely responsible for determining the appropriateness of using and
  23   distributing the Program and assumes all risks associated with its
  24   exercise of rights under this Agreement, including but not limited to
  25   the risks and costs of program errors, damage to or loss of data,
  26   programs or equipment, and unavailability or interruption of operations.
  27
  28   DISCLAIMER OF LIABILITY
  29   NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  30   DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31   DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  32   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  33   TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  34   USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  35   HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  36
  37   You should have received a copy of the GNU General Public License
  38   along with this program; if not, write to the Free Software
  39   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  40
  41   Bugs/Comments/Suggestions should be mailed to:
  42   linuxraid@lsi.com
  43
  44   For more information, goto:
  45   http://www.lsi.com
  46*/
  47
  48#ifndef _3W_SAS_H
  49#define _3W_SAS_H
  50
  51/* AEN severity table */
  52static char *twl_aen_severity_table[] =
  53{
  54        "None", "ERROR", "WARNING", "INFO", "DEBUG", NULL
  55};
  56
  57/* Liberator register offsets */
  58#define TWL_STATUS                         0x0  /* Status */
  59#define TWL_HIBDB                          0x20 /* Inbound doorbell */
  60#define TWL_HISTAT                         0x30 /* Host interrupt status */
  61#define TWL_HIMASK                         0x34 /* Host interrupt mask */
  62#define TWL_HOBDB                          0x9C /* Outbound doorbell */
  63#define TWL_HOBDBC                         0xA0 /* Outbound doorbell clear */
  64#define TWL_SCRPD3                         0xBC /* Scratchpad */
  65#define TWL_HIBQPL                         0xC0 /* Host inbound Q low */
  66#define TWL_HIBQPH                         0xC4 /* Host inbound Q high */
  67#define TWL_HOBQPL                         0xC8 /* Host outbound Q low */
  68#define TWL_HOBQPH                         0xCC /* Host outbound Q high */
  69#define TWL_HISTATUS_VALID_INTERRUPT       0xC
  70#define TWL_HISTATUS_ATTENTION_INTERRUPT   0x4
  71#define TWL_HISTATUS_RESPONSE_INTERRUPT    0x8
  72#define TWL_STATUS_OVERRUN_SUBMIT          0x2000
  73#define TWL_ISSUE_SOFT_RESET               0x100
  74#define TWL_CONTROLLER_READY               0x2000
  75#define TWL_DOORBELL_CONTROLLER_ERROR      0x200000
  76#define TWL_DOORBELL_ATTENTION_INTERRUPT   0x40000
  77#define TWL_PULL_MODE                      0x1
  78
  79/* Command packet opcodes used by the driver */
  80#define TW_OP_INIT_CONNECTION 0x1
  81#define TW_OP_GET_PARAM       0x12
  82#define TW_OP_SET_PARAM       0x13
  83#define TW_OP_EXECUTE_SCSI    0x10
  84
  85/* Asynchronous Event Notification (AEN) codes used by the driver */
  86#define TW_AEN_QUEUE_EMPTY       0x0000
  87#define TW_AEN_SOFT_RESET        0x0001
  88#define TW_AEN_SYNC_TIME_WITH_HOST 0x031
  89#define TW_AEN_SEVERITY_ERROR    0x1
  90#define TW_AEN_SEVERITY_DEBUG    0x4
  91#define TW_AEN_NOT_RETRIEVED 0x1
  92
  93/* Command state defines */
  94#define TW_S_INITIAL   0x1  /* Initial state */
  95#define TW_S_STARTED   0x2  /* Id in use */
  96#define TW_S_POSTED    0x4  /* Posted to the controller */
  97#define TW_S_COMPLETED 0x8  /* Completed by isr */
  98#define TW_S_FINISHED  0x10 /* I/O completely done */
  99
 100/* Compatibility defines */
 101#define TW_9750_ARCH_ID 10
 102#define TW_CURRENT_DRIVER_SRL 40
 103#define TW_CURRENT_DRIVER_BUILD 0
 104#define TW_CURRENT_DRIVER_BRANCH 0
 105
 106/* Phase defines */
 107#define TW_PHASE_INITIAL 0
 108#define TW_PHASE_SGLIST  2
 109
 110/* Misc defines */
 111#define TW_SECTOR_SIZE                        512
 112#define TW_MAX_UNITS                          32
 113#define TW_INIT_MESSAGE_CREDITS               0x100
 114#define TW_INIT_COMMAND_PACKET_SIZE           0x3
 115#define TW_INIT_COMMAND_PACKET_SIZE_EXTENDED  0x6
 116#define TW_EXTENDED_INIT_CONNECT              0x2
 117#define TW_BASE_FW_SRL                        24
 118#define TW_BASE_FW_BRANCH                     0
 119#define TW_BASE_FW_BUILD                      1
 120#define TW_Q_LENGTH                           256
 121#define TW_Q_START                            0
 122#define TW_MAX_SLOT                           32
 123#define TW_MAX_RESET_TRIES                    2
 124#define TW_MAX_CMDS_PER_LUN                   254
 125#define TW_MAX_AEN_DRAIN                      255
 126#define TW_IN_RESET                           2
 127#define TW_USING_MSI                          3
 128#define TW_IN_ATTENTION_LOOP                  4
 129#define TW_MAX_SECTORS                        256
 130#define TW_MAX_CDB_LEN                        16
 131#define TW_IOCTL_CHRDEV_TIMEOUT               60 /* 60 seconds */
 132#define TW_IOCTL_CHRDEV_FREE                  -1
 133#define TW_COMMAND_OFFSET                     128 /* 128 bytes */
 134#define TW_VERSION_TABLE                      0x0402
 135#define TW_TIMEKEEP_TABLE                     0x040A
 136#define TW_INFORMATION_TABLE                  0x0403
 137#define TW_PARAM_FWVER                        3
 138#define TW_PARAM_FWVER_LENGTH                 16
 139#define TW_PARAM_BIOSVER                      4
 140#define TW_PARAM_BIOSVER_LENGTH               16
 141#define TW_PARAM_MODEL                        8
 142#define TW_PARAM_MODEL_LENGTH                 16
 143#define TW_PARAM_PHY_SUMMARY_TABLE            1
 144#define TW_PARAM_PHYCOUNT                     2
 145#define TW_PARAM_PHYCOUNT_LENGTH              1
 146#define TW_IOCTL_FIRMWARE_PASS_THROUGH        0x108  // Used by smartmontools
 147#define TW_ALLOCATION_LENGTH                  128
 148#define TW_SENSE_DATA_LENGTH                  18
 149#define TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED   0x10a
 150#define TW_ERROR_INVALID_FIELD_IN_CDB         0x10d
 151#define TW_ERROR_UNIT_OFFLINE                 0x128
 152#define TW_MESSAGE_SOURCE_CONTROLLER_ERROR    3
 153#define TW_MESSAGE_SOURCE_CONTROLLER_EVENT    4
 154#define TW_DRIVER                             6
 155#ifndef PCI_DEVICE_ID_3WARE_9750
 156#define PCI_DEVICE_ID_3WARE_9750 0x1010
 157#endif
 158
 159/* Bitmask macros to eliminate bitfields */
 160
 161/* opcode: 5, reserved: 3 */
 162#define TW_OPRES_IN(x,y) ((x << 5) | (y & 0x1f))
 163#define TW_OP_OUT(x) (x & 0x1f)
 164
 165/* opcode: 5, sgloffset: 3 */
 166#define TW_OPSGL_IN(x,y) ((x << 5) | (y & 0x1f))
 167#define TW_SGL_OUT(x) ((x >> 5) & 0x7)
 168
 169/* severity: 3, reserved: 5 */
 170#define TW_SEV_OUT(x) (x & 0x7)
 171
 172/* not_mfa: 1, reserved: 7, status: 8, request_id: 16 */
 173#define TW_RESID_OUT(x) ((x >> 16) & 0xffff)
 174#define TW_NOTMFA_OUT(x) (x & 0x1)
 175
 176/* request_id: 12, lun: 4 */
 177#define TW_REQ_LUN_IN(lun, request_id) (((lun << 12) & 0xf000) | (request_id & 0xfff))
 178#define TW_LUN_OUT(lun) ((lun >> 12) & 0xf)
 179
 180/* Register access macros */
 181#define TWL_STATUS_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_STATUS)
 182#define TWL_HOBQPL_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBQPL)
 183#define TWL_HOBQPH_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBQPH)
 184#define TWL_HOBDB_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBDB)
 185#define TWL_HOBDBC_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HOBDBC)
 186#define TWL_HIMASK_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIMASK)
 187#define TWL_HISTAT_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HISTAT)
 188#define TWL_HIBQPH_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIBQPH)
 189#define TWL_HIBQPL_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIBQPL)
 190#define TWL_HIBDB_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_HIBDB)
 191#define TWL_SCRPD3_REG_ADDR(x) ((unsigned char __iomem *)x->base_addr + TWL_SCRPD3)
 192#define TWL_MASK_INTERRUPTS(x) (writel(~0, TWL_HIMASK_REG_ADDR(tw_dev)))
 193#define TWL_UNMASK_INTERRUPTS(x) (writel(~TWL_HISTATUS_VALID_INTERRUPT, TWL_HIMASK_REG_ADDR(tw_dev)))
 194#define TWL_CLEAR_DB_INTERRUPT(x) (writel(~0, TWL_HOBDBC_REG_ADDR(tw_dev)))
 195#define TWL_SOFT_RESET(x) (writel(TWL_ISSUE_SOFT_RESET, TWL_HIBDB_REG_ADDR(tw_dev)))
 196
 197/* Macros */
 198#define TW_PRINTK(h,a,b,c) { \
 199if (h) \
 200printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s.\n",h->host_no,a,b,c); \
 201else \
 202printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s.\n",a,b,c); \
 203}
 204#define TW_MAX_LUNS 16
 205#define TW_COMMAND_SIZE (sizeof(dma_addr_t) > 4 ? 6 : 4)
 206#define TW_LIBERATOR_MAX_SGL_LENGTH (sizeof(dma_addr_t) > 4 ? 46 : 92)
 207#define TW_LIBERATOR_MAX_SGL_LENGTH_OLD (sizeof(dma_addr_t) > 4 ? 47 : 94)
 208#define TW_PADDING_LENGTH_LIBERATOR 136
 209#define TW_PADDING_LENGTH_LIBERATOR_OLD 132
 210#define TW_CPU_TO_SGL(x) (sizeof(dma_addr_t) > 4 ? cpu_to_le64(x) : cpu_to_le32(x))
 211
 212#pragma pack(1)
 213
 214/* SGL entry */
 215typedef struct TAG_TW_SG_Entry_ISO {
 216        dma_addr_t address;
 217        dma_addr_t length;
 218} TW_SG_Entry_ISO;
 219
 220/* Old Command Packet with ISO SGL */
 221typedef struct TW_Command {
 222        unsigned char opcode__sgloffset;
 223        unsigned char size;
 224        unsigned char request_id;
 225        unsigned char unit__hostid;
 226        /* Second DWORD */
 227        unsigned char status;
 228        unsigned char flags;
 229        union {
 230                unsigned short block_count;
 231                unsigned short parameter_count;
 232        } byte6_offset;
 233        union {
 234                struct {
 235                        u32 lba;
 236                        TW_SG_Entry_ISO sgl[TW_LIBERATOR_MAX_SGL_LENGTH_OLD];
 237                        unsigned char padding[TW_PADDING_LENGTH_LIBERATOR_OLD];
 238                } io;
 239                struct {
 240                        TW_SG_Entry_ISO sgl[TW_LIBERATOR_MAX_SGL_LENGTH_OLD];
 241                        u32 padding;
 242                        unsigned char padding2[TW_PADDING_LENGTH_LIBERATOR_OLD];
 243                } param;
 244        } byte8_offset;
 245} TW_Command;
 246
 247/* New Command Packet with ISO SGL */
 248typedef struct TAG_TW_Command_Apache {
 249        unsigned char opcode__reserved;
 250        unsigned char unit;
 251        unsigned short request_id__lunl;
 252        unsigned char status;
 253        unsigned char sgl_offset;
 254        unsigned short sgl_entries__lunh;
 255        unsigned char cdb[16];
 256        TW_SG_Entry_ISO sg_list[TW_LIBERATOR_MAX_SGL_LENGTH];
 257        unsigned char padding[TW_PADDING_LENGTH_LIBERATOR];
 258} TW_Command_Apache;
 259
 260/* New command packet header */
 261typedef struct TAG_TW_Command_Apache_Header {
 262        unsigned char sense_data[TW_SENSE_DATA_LENGTH];
 263        struct {
 264                char reserved[4];
 265                unsigned short error;
 266                unsigned char padding;
 267                unsigned char severity__reserved;
 268        } status_block;
 269        unsigned char err_specific_desc[98];
 270        struct {
 271                unsigned char size_header;
 272                unsigned short request_id;
 273                unsigned char size_sense;
 274        } header_desc;
 275} TW_Command_Apache_Header;
 276
 277/* This struct is a union of the 2 command packets */
 278typedef struct TAG_TW_Command_Full {
 279        TW_Command_Apache_Header header;
 280        union {
 281                TW_Command oldcommand;
 282                TW_Command_Apache newcommand;
 283        } command;
 284} TW_Command_Full;
 285
 286/* Initconnection structure */
 287typedef struct TAG_TW_Initconnect {
 288        unsigned char opcode__reserved;
 289        unsigned char size;
 290        unsigned char request_id;
 291        unsigned char res2;
 292        unsigned char status;
 293        unsigned char flags;
 294        unsigned short message_credits;
 295        u32 features;
 296        unsigned short fw_srl;
 297        unsigned short fw_arch_id;
 298        unsigned short fw_branch;
 299        unsigned short fw_build;
 300        u32 result;
 301} TW_Initconnect;
 302
 303/* Event info structure */
 304typedef struct TAG_TW_Event
 305{
 306        unsigned int sequence_id;
 307        unsigned int time_stamp_sec;
 308        unsigned short aen_code;
 309        unsigned char severity;
 310        unsigned char retrieved;
 311        unsigned char repeat_count;
 312        unsigned char parameter_len;
 313        unsigned char parameter_data[98];
 314} TW_Event;
 315
 316typedef struct TAG_TW_Ioctl_Driver_Command {
 317        unsigned int control_code;
 318        unsigned int status;
 319        unsigned int unique_id;
 320        unsigned int sequence_id;
 321        unsigned int os_specific;
 322        unsigned int buffer_length;
 323} TW_Ioctl_Driver_Command;
 324
 325typedef struct TAG_TW_Ioctl_Apache {
 326        TW_Ioctl_Driver_Command driver_command;
 327        char padding[488];
 328        TW_Command_Full firmware_command;
 329        char data_buffer[1];
 330} TW_Ioctl_Buf_Apache;
 331
 332/* GetParam descriptor */
 333typedef struct {
 334        unsigned short  table_id;
 335        unsigned short  parameter_id;
 336        unsigned short  parameter_size_bytes;
 337        unsigned short  actual_parameter_size_bytes;
 338        unsigned char   data[1];
 339} TW_Param_Apache;
 340
 341/* Compatibility information structure */
 342typedef struct TAG_TW_Compatibility_Info
 343{
 344        char driver_version[32];
 345        unsigned short working_srl;
 346        unsigned short working_branch;
 347        unsigned short working_build;
 348        unsigned short driver_srl_high;
 349        unsigned short driver_branch_high;
 350        unsigned short driver_build_high;
 351        unsigned short driver_srl_low;
 352        unsigned short driver_branch_low;
 353        unsigned short driver_build_low;
 354        unsigned short fw_on_ctlr_srl;
 355        unsigned short fw_on_ctlr_branch;
 356        unsigned short fw_on_ctlr_build;
 357} TW_Compatibility_Info;
 358
 359#pragma pack()
 360
 361typedef struct TAG_TW_Device_Extension {
 362        void                     __iomem *base_addr;
 363        unsigned long           *generic_buffer_virt[TW_Q_LENGTH];
 364        dma_addr_t              generic_buffer_phys[TW_Q_LENGTH];
 365        TW_Command_Full         *command_packet_virt[TW_Q_LENGTH];
 366        dma_addr_t              command_packet_phys[TW_Q_LENGTH];
 367        TW_Command_Apache_Header *sense_buffer_virt[TW_Q_LENGTH];
 368        dma_addr_t              sense_buffer_phys[TW_Q_LENGTH];
 369        struct pci_dev          *tw_pci_dev;
 370        struct scsi_cmnd        *srb[TW_Q_LENGTH];
 371        unsigned char           free_queue[TW_Q_LENGTH];
 372        unsigned char           free_head;
 373        unsigned char           free_tail;
 374        int                     state[TW_Q_LENGTH];
 375        unsigned int            posted_request_count;
 376        unsigned int            max_posted_request_count;
 377        unsigned int            max_sgl_entries;
 378        unsigned int            sgl_entries;
 379        unsigned int            num_resets;
 380        unsigned int            sector_count;
 381        unsigned int            max_sector_count;
 382        unsigned int            aen_count;
 383        struct Scsi_Host        *host;
 384        long                    flags;
 385        TW_Event                *event_queue[TW_Q_LENGTH];
 386        unsigned char           error_index;
 387        unsigned int            error_sequence_id;
 388        int                     chrdev_request_id;
 389        wait_queue_head_t       ioctl_wqueue;
 390        struct mutex            ioctl_lock;
 391        TW_Compatibility_Info   tw_compat_info;
 392        char                    online;
 393} TW_Device_Extension;
 394
 395#endif /* _3W_SAS_H */
 396
 397
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