LXR linux/drivers/scsi/3w-sas.h

   1/*
   2   3w-sas.h -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux.
   3
   4   Written By: Adam Radford <aradford@gmail.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   aradford@gmail.com
  43*/
  44
  45#ifndef _3W_SAS_H
  46#define _3W_SAS_H
  47
  48/* AEN severity table */
  49static char *twl_aen_severity_table[] =
  50{
  51        "None", "ERROR", "WARNING", "INFO", "DEBUG", NULL
  52};
  53
  54/* Liberator register offsets */
  55#define TWL_STATUS                         0x0  /* Status */
  56#define TWL_HIBDB                          0x20 /* Inbound doorbell */
  57#define TWL_HISTAT                         0x30 /* Host interrupt status */
  58#define TWL_HIMASK                         0x34 /* Host interrupt mask */
  59#define TWL_HOBDB                          0x9C /* Outbound doorbell */
  60#define TWL_HOBDBC                         0xA0 /* Outbound doorbell clear */
  61#define TWL_SCRPD3                         0xBC /* Scratchpad */
  62#define TWL_HIBQPL                         0xC0 /* Host inbound Q low */
  63#define TWL_HIBQPH                         0xC4 /* Host inbound Q high */
  64#define TWL_HOBQPL                         0xC8 /* Host outbound Q low */
  65#define TWL_HOBQPH                         0xCC /* Host outbound Q high */
  66#define TWL_HISTATUS_VALID_INTERRUPT       0xC
  67#define TWL_HISTATUS_ATTENTION_INTERRUPT   0x4
  68#define TWL_HISTATUS_RESPONSE_INTERRUPT    0x8
  69#define TWL_STATUS_OVERRUN_SUBMIT          0x2000
  70#define TWL_ISSUE_SOFT_RESET               0x100
  71#define TWL_CONTROLLER_READY               0x2000
  72#define TWL_DOORBELL_CONTROLLER_ERROR      0x200000
  73#define TWL_DOORBELL_ATTENTION_INTERRUPT   0x40000
  74#define TWL_PULL_MODE                      0x1
  75
  76/* Command packet opcodes used by the driver */
  77#define TW_OP_INIT_CONNECTION 0x1
  78#define TW_OP_GET_PARAM       0x12
  79#define TW_OP_SET_PARAM       0x13
  80#define TW_OP_EXECUTE_SCSI    0x10
  81
  82/* Asynchronous Event Notification (AEN) codes used by the driver */
  83#define TW_AEN_QUEUE_EMPTY       0x0000
  84#define TW_AEN_SOFT_RESET        0x0001
  85#define TW_AEN_SYNC_TIME_WITH_HOST 0x031
  86#define TW_AEN_SEVERITY_ERROR    0x1
  87#define TW_AEN_SEVERITY_DEBUG    0x4
  88#define TW_AEN_NOT_RETRIEVED     0x1
  89
  90/* Command state defines */
  91#define TW_S_INITIAL   0x1  /* Initial state */
  92#define TW_S_STARTED   0x2  /* Id in use */
  93#define TW_S_POSTED    0x4  /* Posted to the controller */
  94#define TW_S_COMPLETED 0x8  /* Completed by isr */
  95#define TW_S_FINISHED  0x10 /* I/O completely done */
  96
  97/* Compatibility defines */
  98#define TW_9750_ARCH_ID 10
  99#define TW_CURRENT_DRIVER_SRL 40
 100#define TW_CURRENT_DRIVER_BUILD 0
 101#define TW_CURRENT_DRIVER_BRANCH 0
 102
 103/* Misc defines */
 104#define TW_SECTOR_SIZE                        512
 105#define TW_MAX_UNITS                          32
 106#define TW_INIT_MESSAGE_CREDITS               0x100
 107#define TW_INIT_COMMAND_PACKET_SIZE           0x3
 108#define TW_INIT_COMMAND_PACKET_SIZE_EXTENDED  0x6
 109#define TW_EXTENDED_INIT_CONNECT              0x2
 110#define TW_BASE_FW_SRL                        24
 111#define TW_BASE_FW_BRANCH                     0
 112#define TW_BASE_FW_BUILD                      1
 113#define TW_Q_LENGTH                           256
 114#define TW_Q_START                            0
 115#define TW_MAX_SLOT                           32
 116#define TW_MAX_RESET_TRIES                    2
 117#define TW_MAX_CMDS_PER_LUN                   254
 118#define TW_MAX_AEN_DRAIN                      255
 119#define TW_IN_RESET                           2
 120#define TW_USING_MSI                          3
 121#define TW_IN_ATTENTION_LOOP                  4
 122#define TW_MAX_SECTORS                        256
 123#define TW_MAX_CDB_LEN                        16
 124#define TW_IOCTL_CHRDEV_TIMEOUT               60 /* 60 seconds */
 125#define TW_IOCTL_CHRDEV_FREE                  -1
 126#define TW_COMMAND_OFFSET                     128 /* 128 bytes */
 127#define TW_VERSION_TABLE                      0x0402
 128#define TW_TIMEKEEP_TABLE                     0x040A
 129#define TW_INFORMATION_TABLE                  0x0403
 130#define TW_PARAM_FWVER                        3
 131#define TW_PARAM_FWVER_LENGTH                 16
 132#define TW_PARAM_BIOSVER                      4
 133#define TW_PARAM_BIOSVER_LENGTH               16
 134#define TW_PARAM_MODEL                        8
 135#define TW_PARAM_MODEL_LENGTH                 16
 136#define TW_PARAM_PHY_SUMMARY_TABLE            1
 137#define TW_PARAM_PHYCOUNT                     2
 138#define TW_PARAM_PHYCOUNT_LENGTH              1
 139#define TW_IOCTL_FIRMWARE_PASS_THROUGH        0x108  // Used by smartmontools
 140#define TW_ALLOCATION_LENGTH                  128
 141#define TW_SENSE_DATA_LENGTH                  18
 142#define TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED   0x10a
 143#define TW_ERROR_INVALID_FIELD_IN_CDB         0x10d
 144#define TW_ERROR_UNIT_OFFLINE                 0x128
 145#define TW_MESSAGE_SOURCE_CONTROLLER_ERROR    3
 146#define TW_MESSAGE_SOURCE_CONTROLLER_EVENT    4
 147#define TW_DRIVER                             6
 148#ifndef PCI_DEVICE_ID_3WARE_9750
 149#define PCI_DEVICE_ID_3WARE_9750 0x1010
 150#endif
 151
 152/* Bitmask macros to eliminate bitfields */
 153
 154/* opcode: 5, reserved: 3 */
 155#define TW_OPRES_IN(x,y) ((x << 5) | (y & 0x1f))
 156#define TW_OP_OUT(x) (x & 0x1f)
 157
 158/* opcode: 5, sgloffset: 3 */
 159#define TW_OPSGL_IN(x,y) ((x << 5) | (y & 0x1f))
 160#define TW_SGL_OUT(x) ((x >> 5) & 0x7)
 161
 162/* severity: 3, reserved: 5 */
 163#define TW_SEV_OUT(x) (x & 0x7)
 164
 165/* not_mfa: 1, reserved: 7, status: 8, request_id: 16 */
 166#define TW_RESID_OUT(x) ((x >> 16) & 0xffff)
 167#define TW_NOTMFA_OUT(x) (x & 0x1)
 168
 169/* request_id: 12, lun: 4 */
 170#define TW_REQ_LUN_IN(lun, request_id)                  \
 171        (((lun << 12) & 0xf000) | (request_id & 0xfff))
 172#define TW_LUN_OUT(lun) ((lun >> 12) & 0xf)
 173
 174/* Register access macros */
 175#define TWL_STATUS_REG_ADDR(x)                                  \
 176        ((unsigned char __iomem *)x->base_addr + TWL_STATUS)
 177#define TWL_HOBQPL_REG_ADDR(x)                                  \
 178        ((unsigned char __iomem *)x->base_addr + TWL_HOBQPL)
 179#define TWL_HOBQPH_REG_ADDR(x)                                  \
 180        ((unsigned char __iomem *)x->base_addr + TWL_HOBQPH)
 181#define TWL_HOBDB_REG_ADDR(x)                                   \
 182        ((unsigned char __iomem *)x->base_addr + TWL_HOBDB)
 183#define TWL_HOBDBC_REG_ADDR(x)                                  \
 184        ((unsigned char __iomem *)x->base_addr + TWL_HOBDBC)
 185#define TWL_HIMASK_REG_ADDR(x)                                  \
 186        ((unsigned char __iomem *)x->base_addr + TWL_HIMASK)
 187#define TWL_HISTAT_REG_ADDR(x)                                  \
 188        ((unsigned char __iomem *)x->base_addr + TWL_HISTAT)
 189#define TWL_HIBQPH_REG_ADDR(x)                                  \
 190        ((unsigned char __iomem *)x->base_addr + TWL_HIBQPH)
 191#define TWL_HIBQPL_REG_ADDR(x)                                  \
 192        ((unsigned char __iomem *)x->base_addr + TWL_HIBQPL)
 193#define TWL_HIBDB_REG_ADDR(x)                                   \
 194        ((unsigned char __iomem *)x->base_addr + TWL_HIBDB)
 195#define TWL_SCRPD3_REG_ADDR(x)                                  \
 196        ((unsigned char __iomem *)x->base_addr + TWL_SCRPD3)
 197#define TWL_MASK_INTERRUPTS(x)                                  \
 198        (writel(~0, TWL_HIMASK_REG_ADDR(tw_dev)))
 199#define TWL_UNMASK_INTERRUPTS(x)                                \
 200        (writel(~TWL_HISTATUS_VALID_INTERRUPT, TWL_HIMASK_REG_ADDR(tw_dev)))
 201#define TWL_CLEAR_DB_INTERRUPT(x)                               \
 202        (writel(~0, TWL_HOBDBC_REG_ADDR(tw_dev)))
 203#define TWL_SOFT_RESET(x)                                       \
 204        (writel(TWL_ISSUE_SOFT_RESET, TWL_HIBDB_REG_ADDR(tw_dev)))
 205
 206/* Macros */
 207#define TW_PRINTK(h,a,b,c) { \
 208if (h) \
 209printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s.\n",h->host_no,a,b,c); \
 210else \
 211printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s.\n",a,b,c); \
 212}
 213#define TW_MAX_LUNS 16
 214#define TW_COMMAND_SIZE (sizeof(dma_addr_t) > 4 ? 6 : 4)
 215#define TW_LIBERATOR_MAX_SGL_LENGTH (sizeof(dma_addr_t) > 4 ? 46 : 92)
 216#define TW_LIBERATOR_MAX_SGL_LENGTH_OLD (sizeof(dma_addr_t) > 4 ? 47 : 94)
 217#define TW_PADDING_LENGTH_LIBERATOR 136
 218#define TW_PADDING_LENGTH_LIBERATOR_OLD 132
 219#define TW_CPU_TO_SGL(x) (sizeof(dma_addr_t) > 4 ? cpu_to_le64(x) : cpu_to_le32(x))
 220
 221#pragma pack(1)
 222
 223/* SGL entry */
 224typedef struct TAG_TW_SG_Entry_ISO {
 225        dma_addr_t address;
 226        dma_addr_t length;
 227} TW_SG_Entry_ISO;
 228
 229/* Old Command Packet with ISO SGL */
 230typedef struct TW_Command {
 231        unsigned char opcode__sgloffset;
 232        unsigned char size;
 233        unsigned char request_id;
 234        unsigned char unit__hostid;
 235        /* Second DWORD */
 236        unsigned char status;
 237        unsigned char flags;
 238        union {
 239                unsigned short block_count;
 240                unsigned short parameter_count;
 241        } byte6_offset;
 242        union {
 243                struct {
 244                        u32 lba;
 245                        TW_SG_Entry_ISO sgl[TW_LIBERATOR_MAX_SGL_LENGTH_OLD];
 246                        unsigned char padding[TW_PADDING_LENGTH_LIBERATOR_OLD];
 247                } io;
 248                struct {
 249                        TW_SG_Entry_ISO sgl[TW_LIBERATOR_MAX_SGL_LENGTH_OLD];
 250                        u32 padding;
 251                        unsigned char padding2[TW_PADDING_LENGTH_LIBERATOR_OLD];
 252                } param;
 253        } byte8_offset;
 254} TW_Command;
 255
 256/* New Command Packet with ISO SGL */
 257typedef struct TAG_TW_Command_Apache {
 258        unsigned char opcode__reserved;
 259        unsigned char unit;
 260        unsigned short request_id__lunl;
 261        unsigned char status;
 262        unsigned char sgl_offset;
 263        unsigned short sgl_entries__lunh;
 264        unsigned char cdb[16];
 265        TW_SG_Entry_ISO sg_list[TW_LIBERATOR_MAX_SGL_LENGTH];
 266        unsigned char padding[TW_PADDING_LENGTH_LIBERATOR];
 267} TW_Command_Apache;
 268
 269/* New command packet header */
 270typedef struct TAG_TW_Command_Apache_Header {
 271        unsigned char sense_data[TW_SENSE_DATA_LENGTH];
 272        struct {
 273                char reserved[4];
 274                unsigned short error;
 275                unsigned char padding;
 276                unsigned char severity__reserved;
 277        } status_block;
 278        unsigned char err_specific_desc[98];
 279        struct {
 280                unsigned char size_header;
 281                unsigned short request_id;
 282                unsigned char size_sense;
 283        } header_desc;
 284} TW_Command_Apache_Header;
 285
 286/* This struct is a union of the 2 command packets */
 287typedef struct TAG_TW_Command_Full {
 288        TW_Command_Apache_Header header;
 289        union {
 290                TW_Command oldcommand;
 291                TW_Command_Apache newcommand;
 292        } command;
 293} TW_Command_Full;
 294
 295/* Initconnection structure */
 296typedef struct TAG_TW_Initconnect {
 297        unsigned char opcode__reserved;
 298        unsigned char size;
 299        unsigned char request_id;
 300        unsigned char res2;
 301        unsigned char status;
 302        unsigned char flags;
 303        unsigned short message_credits;
 304        u32 features;
 305        unsigned short fw_srl;
 306        unsigned short fw_arch_id;
 307        unsigned short fw_branch;
 308        unsigned short fw_build;
 309        u32 result;
 310} TW_Initconnect;
 311
 312/* Event info structure */
 313typedef struct TAG_TW_Event
 314{
 315        unsigned int sequence_id;
 316        unsigned int time_stamp_sec;
 317        unsigned short aen_code;
 318        unsigned char severity;
 319        unsigned char retrieved;
 320        unsigned char repeat_count;
 321        unsigned char parameter_len;
 322        unsigned char parameter_data[98];
 323} TW_Event;
 324
 325typedef struct TAG_TW_Ioctl_Driver_Command {
 326        unsigned int control_code;
 327        unsigned int status;
 328        unsigned int unique_id;
 329        unsigned int sequence_id;
 330        unsigned int os_specific;
 331        unsigned int buffer_length;
 332} TW_Ioctl_Driver_Command;
 333
 334typedef struct TAG_TW_Ioctl_Apache {
 335        TW_Ioctl_Driver_Command driver_command;
 336        char padding[488];
 337        TW_Command_Full firmware_command;
 338        char data_buffer[1];
 339} TW_Ioctl_Buf_Apache;
 340
 341/* GetParam descriptor */
 342typedef struct {
 343        unsigned short  table_id;
 344        unsigned short  parameter_id;
 345        unsigned short  parameter_size_bytes;
 346        unsigned short  actual_parameter_size_bytes;
 347        unsigned char   data[1];
 348} TW_Param_Apache;
 349
 350/* Compatibility information structure */
 351typedef struct TAG_TW_Compatibility_Info
 352{
 353        char driver_version[32];
 354        unsigned short working_srl;
 355        unsigned short working_branch;
 356        unsigned short working_build;
 357        unsigned short driver_srl_high;
 358        unsigned short driver_branch_high;
 359        unsigned short driver_build_high;
 360        unsigned short driver_srl_low;
 361        unsigned short driver_branch_low;
 362        unsigned short driver_build_low;
 363        unsigned short fw_on_ctlr_srl;
 364        unsigned short fw_on_ctlr_branch;
 365        unsigned short fw_on_ctlr_build;
 366} TW_Compatibility_Info;
 367
 368#pragma pack()
 369
 370typedef struct TAG_TW_Device_Extension {
 371        void                    __iomem *base_addr;
 372        unsigned long           *generic_buffer_virt[TW_Q_LENGTH];
 373        dma_addr_t              generic_buffer_phys[TW_Q_LENGTH];
 374        TW_Command_Full         *command_packet_virt[TW_Q_LENGTH];
 375        dma_addr_t              command_packet_phys[TW_Q_LENGTH];
 376        TW_Command_Apache_Header *sense_buffer_virt[TW_Q_LENGTH];
 377        dma_addr_t              sense_buffer_phys[TW_Q_LENGTH];
 378        struct pci_dev          *tw_pci_dev;
 379        struct scsi_cmnd        *srb[TW_Q_LENGTH];
 380        unsigned char           free_queue[TW_Q_LENGTH];
 381        unsigned char           free_head;
 382        unsigned char           free_tail;
 383        int                     state[TW_Q_LENGTH];
 384        unsigned int            posted_request_count;
 385        unsigned int            max_posted_request_count;
 386        unsigned int            max_sgl_entries;
 387        unsigned int            sgl_entries;
 388        unsigned int            num_resets;
 389        unsigned int            sector_count;
 390        unsigned int            max_sector_count;
 391        unsigned int            aen_count;
 392        struct Scsi_Host        *host;
 393        long                    flags;
 394        TW_Event                *event_queue[TW_Q_LENGTH];
 395        unsigned char           error_index;
 396        unsigned int            error_sequence_id;
 397        int                     chrdev_request_id;
 398        wait_queue_head_t       ioctl_wqueue;
 399        struct mutex            ioctl_lock;
 400        TW_Compatibility_Info   tw_compat_info;
 401        char                    online;
 402} TW_Device_Extension;
 403
 404#endif /* _3W_SAS_H */
 405
 406