1 /* 2 * pmcraid.h -- PMC Sierra MaxRAID controller driver header file 3 * 4 * Written By: Anil Ravindranath<anil_ravindranath@pmc-sierra.com> 5 * PMC-Sierra Inc 6 * 7 * Copyright (C) 2008, 2009 PMC Sierra Inc. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 */ 23 24 #ifndef _PMCRAID_H 25 #define _PMCRAID_H 26 27 #include <linux/types.h> 28 #include <linux/completion.h> 29 #include <linux/list.h> 30 #include <scsi/scsi.h> 31 #include <scsi/scsi_cmnd.h> 32 #include <linux/cdev.h> 33 #include <net/netlink.h> 34 #include <net/genetlink.h> 35 #include <linux/connector.h> 36 /* 37 * Driver name : string representing the driver name 38 * Device file : /dev file to be used for management interfaces 39 * Driver version: version string in major_version.minor_version.patch format 40 * Driver date : date information in "Mon dd yyyy" format 41 */ 42 #define PMCRAID_DRIVER_NAME "PMC MaxRAID" 43 #define PMCRAID_DEVFILE "pmcsas" 44 #define PMCRAID_DRIVER_VERSION "1.0.3" 45 46 #define PMCRAID_FW_VERSION_1 0x002 47 48 /* Maximum number of adapters supported by current version of the driver */ 49 #define PMCRAID_MAX_ADAPTERS 1024 50 51 /* Bit definitions as per firmware, bit position [0][1][2].....[31] */ 52 #define PMC_BIT8(n) (1 << (7-n)) 53 #define PMC_BIT16(n) (1 << (15-n)) 54 #define PMC_BIT32(n) (1 << (31-n)) 55 56 /* PMC PCI vendor ID and device ID values */ 57 #define PCI_VENDOR_ID_PMC 0x11F8 58 #define PCI_DEVICE_ID_PMC_MAXRAID 0x5220 59 60 /* 61 * MAX_CMD : maximum commands that can be outstanding with IOA 62 * MAX_IO_CMD : command blocks available for IO commands 63 * MAX_HCAM_CMD : command blocks avaibale for HCAMS 64 * MAX_INTERNAL_CMD : command blocks avaible for internal commands like reset 65 */ 66 #define PMCRAID_MAX_CMD 1024 67 #define PMCRAID_MAX_IO_CMD 1020 68 #define PMCRAID_MAX_HCAM_CMD 2 69 #define PMCRAID_MAX_INTERNAL_CMD 2 70 71 /* MAX_IOADLS : max number of scatter-gather lists supported by IOA 72 * IOADLS_INTERNAL : number of ioadls included as part of IOARCB. 73 * IOADLS_EXTERNAL : number of ioadls allocated external to IOARCB 74 */ 75 #define PMCRAID_IOADLS_INTERNAL 27 76 #define PMCRAID_IOADLS_EXTERNAL 37 77 #define PMCRAID_MAX_IOADLS PMCRAID_IOADLS_INTERNAL 78 79 /* HRRQ_ENTRY_SIZE : size of hrrq buffer 80 * IOARCB_ALIGNMENT : alignment required for IOARCB 81 * IOADL_ALIGNMENT : alignment requirement for IOADLs 82 * MSIX_VECTORS : number of MSIX vectors supported 83 */ 84 #define HRRQ_ENTRY_SIZE sizeof(__le32) 85 #define PMCRAID_IOARCB_ALIGNMENT 32 86 #define PMCRAID_IOADL_ALIGNMENT 16 87 #define PMCRAID_IOASA_ALIGNMENT 4 88 #define PMCRAID_NUM_MSIX_VECTORS 16 89 90 /* various other limits */ 91 #define PMCRAID_VENDOR_ID_LEN 8 92 #define PMCRAID_PRODUCT_ID_LEN 16 93 #define PMCRAID_SERIAL_NUM_LEN 8 94 #define PMCRAID_LUN_LEN 8 95 #define PMCRAID_MAX_CDB_LEN 16 96 #define PMCRAID_DEVICE_ID_LEN 8 97 #define PMCRAID_SENSE_DATA_LEN 256 98 #define PMCRAID_ADD_CMD_PARAM_LEN 48 99 100 #define PMCRAID_MAX_BUS_TO_SCAN 1 101 #define PMCRAID_MAX_NUM_TARGETS_PER_BUS 256 102 #define PMCRAID_MAX_NUM_LUNS_PER_TARGET 8 103 104 /* IOA bus/target/lun number of IOA resources */ 105 #define PMCRAID_IOA_BUS_ID 0xfe 106 #define PMCRAID_IOA_TARGET_ID 0xff 107 #define PMCRAID_IOA_LUN_ID 0xff 108 #define PMCRAID_VSET_BUS_ID 0x1 109 #define PMCRAID_VSET_LUN_ID 0x0 110 #define PMCRAID_PHYS_BUS_ID 0x0 111 #define PMCRAID_VIRTUAL_ENCL_BUS_ID 0x8 112 #define PMCRAID_MAX_VSET_TARGETS 0x7F 113 #define PMCRAID_MAX_VSET_LUNS_PER_TARGET 8 114 115 #define PMCRAID_IOA_MAX_SECTORS 32767 116 #define PMCRAID_VSET_MAX_SECTORS 512 117 #define PMCRAID_MAX_CMD_PER_LUN 254 118 119 /* Number of configuration table entries (resources), includes 1 FP, 120 * 1 Enclosure device 121 */ 122 #define PMCRAID_MAX_RESOURCES 256 123 124 /* Adapter Commands used by driver */ 125 #define PMCRAID_QUERY_RESOURCE_STATE 0xC2 126 #define PMCRAID_RESET_DEVICE 0xC3 127 /* options to select reset target */ 128 #define ENABLE_RESET_MODIFIER 0x80 129 #define RESET_DEVICE_LUN 0x40 130 #define RESET_DEVICE_TARGET 0x20 131 #define RESET_DEVICE_BUS 0x10 132 133 #define PMCRAID_IDENTIFY_HRRQ 0xC4 134 #define PMCRAID_QUERY_IOA_CONFIG 0xC5 135 #define PMCRAID_QUERY_CMD_STATUS 0xCB 136 #define PMCRAID_ABORT_CMD 0xC7 137 138 /* CANCEL ALL command, provides option for setting SYNC_COMPLETE 139 * on the target resources for which commands got cancelled 140 */ 141 #define PMCRAID_CANCEL_ALL_REQUESTS 0xCE 142 #define PMCRAID_SYNC_COMPLETE_AFTER_CANCEL PMC_BIT8(0) 143 144 /* HCAM command and types of HCAM supported by IOA */ 145 #define PMCRAID_HOST_CONTROLLED_ASYNC 0xCF 146 #define PMCRAID_HCAM_CODE_CONFIG_CHANGE 0x01 147 #define PMCRAID_HCAM_CODE_LOG_DATA 0x02 148 149 /* IOA shutdown command and various shutdown types */ 150 #define PMCRAID_IOA_SHUTDOWN 0xF7 151 #define PMCRAID_SHUTDOWN_NORMAL 0x00 152 #define PMCRAID_SHUTDOWN_PREPARE_FOR_NORMAL 0x40 153 #define PMCRAID_SHUTDOWN_NONE 0x100 154 #define PMCRAID_SHUTDOWN_ABBREV 0x80 155 156 /* SET SUPPORTED DEVICES command and the option to select all the 157 * devices to be supported 158 */ 159 #define PMCRAID_SET_SUPPORTED_DEVICES 0xFB 160 #define ALL_DEVICES_SUPPORTED PMC_BIT8(0) 161 162 /* This option is used with SCSI WRITE_BUFFER command */ 163 #define PMCRAID_WR_BUF_DOWNLOAD_AND_SAVE 0x05 164 165 /* IOASC Codes used by driver */ 166 #define PMCRAID_IOASC_SENSE_MASK 0xFFFFFF00 167 #define PMCRAID_IOASC_SENSE_KEY(ioasc) ((ioasc) >> 24) 168 #define PMCRAID_IOASC_SENSE_CODE(ioasc) (((ioasc) & 0x00ff0000) >> 16) 169 #define PMCRAID_IOASC_SENSE_QUAL(ioasc) (((ioasc) & 0x0000ff00) >> 8) 170 #define PMCRAID_IOASC_SENSE_STATUS(ioasc) ((ioasc) & 0x000000ff) 171 172 #define PMCRAID_IOASC_GOOD_COMPLETION 0x00000000 173 #define PMCRAID_IOASC_GC_IOARCB_NOTFOUND 0x005A0000 174 #define PMCRAID_IOASC_NR_INIT_CMD_REQUIRED 0x02040200 175 #define PMCRAID_IOASC_NR_IOA_RESET_REQUIRED 0x02048000 176 #define PMCRAID_IOASC_NR_SYNC_REQUIRED 0x023F0000 177 #define PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC 0x03110C00 178 #define PMCRAID_IOASC_HW_CANNOT_COMMUNICATE 0x04050000 179 #define PMCRAID_IOASC_HW_DEVICE_TIMEOUT 0x04080100 180 #define PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR 0x04448500 181 #define PMCRAID_IOASC_HW_IOA_RESET_REQUIRED 0x04448600 182 #define PMCRAID_IOASC_IR_INVALID_RESOURCE_HANDLE 0x05250000 183 #define PMCRAID_IOASC_AC_TERMINATED_BY_HOST 0x0B5A0000 184 #define PMCRAID_IOASC_UA_BUS_WAS_RESET 0x06290000 185 #define PMCRAID_IOASC_TIME_STAMP_OUT_OF_SYNC 0x06908B00 186 #define PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER 0x06298000 187 188 /* Driver defined IOASCs */ 189 #define PMCRAID_IOASC_IOA_WAS_RESET 0x10000001 190 #define PMCRAID_IOASC_PCI_ACCESS_ERROR 0x10000002 191 192 /* Various timeout values (in milliseconds) used. If any of these are chip 193 * specific, move them to pmcraid_chip_details structure. 194 */ 195 #define PMCRAID_PCI_DEASSERT_TIMEOUT 2000 196 #define PMCRAID_BIST_TIMEOUT 2000 197 #define PMCRAID_AENWAIT_TIMEOUT 5000 198 #define PMCRAID_TRANSOP_TIMEOUT 60000 199 200 #define PMCRAID_RESET_TIMEOUT (2 * HZ) 201 #define PMCRAID_CHECK_FOR_RESET_TIMEOUT ((HZ / 10)) 202 #define PMCRAID_VSET_IO_TIMEOUT (60 * HZ) 203 #define PMCRAID_INTERNAL_TIMEOUT (60 * HZ) 204 #define PMCRAID_SHUTDOWN_TIMEOUT (150 * HZ) 205 #define PMCRAID_RESET_BUS_TIMEOUT (60 * HZ) 206 #define PMCRAID_RESET_HOST_TIMEOUT (150 * HZ) 207 #define PMCRAID_REQUEST_SENSE_TIMEOUT (30 * HZ) 208 #define PMCRAID_SET_SUP_DEV_TIMEOUT (2 * 60 * HZ) 209 210 /* structure to represent a scatter-gather element (IOADL descriptor) */ 211 struct pmcraid_ioadl_desc { 212 __le64 address; 213 __le32 data_len; 214 __u8 reserved[3]; 215 __u8 flags; 216 } __attribute__((packed, aligned(PMCRAID_IOADL_ALIGNMENT))); 217 218 /* pmcraid_ioadl_desc.flags values */ 219 #define IOADL_FLAGS_CHAINED PMC_BIT8(0) 220 #define IOADL_FLAGS_LAST_DESC PMC_BIT8(1) 221 #define IOADL_FLAGS_READ_LAST PMC_BIT8(1) 222 #define IOADL_FLAGS_WRITE_LAST PMC_BIT8(1) 223 224 225 /* additional IOARCB data which can be CDB or additional request parameters 226 * or list of IOADLs. Firmware supports max of 512 bytes for IOARCB, hence then 227 * number of IOADLs are limted to 27. In case they are more than 27, they will 228 * be used in chained form 229 */ 230 struct pmcraid_ioarcb_add_data { 231 union { 232 struct pmcraid_ioadl_desc ioadl[PMCRAID_IOADLS_INTERNAL]; 233 __u8 add_cmd_params[PMCRAID_ADD_CMD_PARAM_LEN]; 234 } u; 235 }; 236 237 /* 238 * IOA Request Control Block 239 */ 240 struct pmcraid_ioarcb { 241 __le64 ioarcb_bus_addr; 242 __le32 resource_handle; 243 __le32 response_handle; 244 __le64 ioadl_bus_addr; 245 __le32 ioadl_length; 246 __le32 data_transfer_length; 247 __le64 ioasa_bus_addr; 248 __le16 ioasa_len; 249 __le16 cmd_timeout; 250 __le16 add_cmd_param_offset; 251 __le16 add_cmd_param_length; 252 __le32 reserved1[2]; 253 __le32 reserved2; 254 __u8 request_type; 255 __u8 request_flags0; 256 __u8 request_flags1; 257 __u8 hrrq_id; 258 __u8 cdb[PMCRAID_MAX_CDB_LEN]; 259 struct pmcraid_ioarcb_add_data add_data; 260 } __attribute__((packed, aligned(PMCRAID_IOARCB_ALIGNMENT))); 261 262 /* well known resource handle values */ 263 #define PMCRAID_IOA_RES_HANDLE 0xffffffff 264 #define PMCRAID_INVALID_RES_HANDLE 0 265 266 /* pmcraid_ioarcb.request_type values */ 267 #define REQ_TYPE_SCSI 0x00 268 #define REQ_TYPE_IOACMD 0x01 269 #define REQ_TYPE_HCAM 0x02 270 271 /* pmcraid_ioarcb.flags0 values */ 272 #define TRANSFER_DIR_WRITE PMC_BIT8(0) 273 #define INHIBIT_UL_CHECK PMC_BIT8(2) 274 #define SYNC_OVERRIDE PMC_BIT8(3) 275 #define SYNC_COMPLETE PMC_BIT8(4) 276 #define NO_LINK_DESCS PMC_BIT8(5) 277 278 /* pmcraid_ioarcb.flags1 values */ 279 #define DELAY_AFTER_RESET PMC_BIT8(0) 280 #define TASK_TAG_SIMPLE 0x10 281 #define TASK_TAG_ORDERED 0x20 282 #define TASK_TAG_QUEUE_HEAD 0x30 283 284 /* toggle bit offset in response handle */ 285 #define HRRQ_TOGGLE_BIT 0x01 286 #define HRRQ_RESPONSE_BIT 0x02 287 288 /* IOA Status Area */ 289 struct pmcraid_ioasa_vset { 290 __le32 failing_lba_hi; 291 __le32 failing_lba_lo; 292 __le32 reserved; 293 } __attribute__((packed, aligned(4))); 294 295 struct pmcraid_ioasa { 296 __le32 ioasc; 297 __le16 returned_status_length; 298 __le16 available_status_length; 299 __le32 residual_data_length; 300 __le32 ilid; 301 __le32 fd_ioasc; 302 __le32 fd_res_address; 303 __le32 fd_res_handle; 304 __le32 reserved; 305 306 /* resource specific sense information */ 307 union { 308 struct pmcraid_ioasa_vset vset; 309 } u; 310 311 /* IOA autosense data */ 312 __le16 auto_sense_length; 313 __le16 error_data_length; 314 __u8 sense_data[PMCRAID_SENSE_DATA_LEN]; 315 } __attribute__((packed, aligned(4))); 316 317 #define PMCRAID_DRIVER_ILID 0xffffffff 318 319 /* Config Table Entry per Resource */ 320 struct pmcraid_config_table_entry { 321 __u8 resource_type; 322 __u8 bus_protocol; 323 __le16 array_id; 324 __u8 common_flags0; 325 __u8 common_flags1; 326 __u8 unique_flags0; 327 __u8 unique_flags1; /*also used as vset target_id */ 328 __le32 resource_handle; 329 __le32 resource_address; 330 __u8 device_id[PMCRAID_DEVICE_ID_LEN]; 331 __u8 lun[PMCRAID_LUN_LEN]; 332 } __attribute__((packed, aligned(4))); 333 334 /* extended configuration table sizes are also of 32 bytes in size */ 335 struct pmcraid_config_table_entry_ext { 336 struct pmcraid_config_table_entry cfgte; 337 }; 338 339 /* resource types (config_table_entry.resource_type values) */ 340 #define RES_TYPE_AF_DASD 0x00 341 #define RES_TYPE_GSCSI 0x01 342 #define RES_TYPE_VSET 0x02 343 #define RES_TYPE_IOA_FP 0xFF 344 345 #define RES_IS_IOA(res) ((res).resource_type == RES_TYPE_IOA_FP) 346 #define RES_IS_GSCSI(res) ((res).resource_type == RES_TYPE_GSCSI) 347 #define RES_IS_VSET(res) ((res).resource_type == RES_TYPE_VSET) 348 #define RES_IS_AFDASD(res) ((res).resource_type == RES_TYPE_AF_DASD) 349 350 /* bus_protocol values used by driver */ 351 #define RES_TYPE_VENCLOSURE 0x8 352 353 /* config_table_entry.common_flags0 */ 354 #define MULTIPATH_RESOURCE PMC_BIT32(0) 355 356 /* unique_flags1 */ 357 #define IMPORT_MODE_MANUAL PMC_BIT8(0) 358 359 /* well known resource handle values */ 360 #define RES_HANDLE_IOA 0xFFFFFFFF 361 #define RES_HANDLE_NONE 0x00000000 362 363 /* well known resource address values */ 364 #define RES_ADDRESS_IOAFP 0xFEFFFFFF 365 #define RES_ADDRESS_INVALID 0xFFFFFFFF 366 367 /* BUS/TARGET/LUN values from resource_addrr */ 368 #define RES_BUS(res_addr) (le32_to_cpu(res_addr) & 0xFF) 369 #define RES_TARGET(res_addr) ((le32_to_cpu(res_addr) >> 16) & 0xFF) 370 #define RES_LUN(res_addr) 0x0 371 372 /* configuration table structure */ 373 struct pmcraid_config_table { 374 __le16 num_entries; 375 __u8 table_format; 376 __u8 reserved1; 377 __u8 flags; 378 __u8 reserved2[11]; 379 union { 380 struct pmcraid_config_table_entry 381 entries[PMCRAID_MAX_RESOURCES]; 382 struct pmcraid_config_table_entry_ext 383 entries_ext[PMCRAID_MAX_RESOURCES]; 384 }; 385 } __attribute__((packed, aligned(4))); 386 387 /* config_table.flags value */ 388 #define MICROCODE_UPDATE_REQUIRED PMC_BIT32(0) 389 390 /* 391 * HCAM format 392 */ 393 #define PMCRAID_HOSTRCB_LDNSIZE 4056 394 395 /* Error log notification format */ 396 struct pmcraid_hostrcb_error { 397 __le32 fd_ioasc; 398 __le32 fd_ra; 399 __le32 fd_rh; 400 __le32 prc; 401 union { 402 __u8 data[PMCRAID_HOSTRCB_LDNSIZE]; 403 } u; 404 } __attribute__ ((packed, aligned(4))); 405 406 struct pmcraid_hcam_hdr { 407 __u8 op_code; 408 __u8 notification_type; 409 __u8 notification_lost; 410 __u8 flags; 411 __u8 overlay_id; 412 __u8 reserved1[3]; 413 __le32 ilid; 414 __le32 timestamp1; 415 __le32 timestamp2; 416 __le32 data_len; 417 } __attribute__((packed, aligned(4))); 418 419 #define PMCRAID_AEN_GROUP 0x3 420 421 struct pmcraid_hcam_ccn { 422 struct pmcraid_hcam_hdr header; 423 struct pmcraid_config_table_entry cfg_entry; 424 struct pmcraid_config_table_entry cfg_entry_old; 425 } __attribute__((packed, aligned(4))); 426 427 #define PMCRAID_CCN_EXT_SIZE 3944 428 struct pmcraid_hcam_ccn_ext { 429 struct pmcraid_hcam_hdr header; 430 struct pmcraid_config_table_entry_ext cfg_entry; 431 struct pmcraid_config_table_entry_ext cfg_entry_old; 432 __u8 reserved[PMCRAID_CCN_EXT_SIZE]; 433 } __attribute__((packed, aligned(4))); 434 435 struct pmcraid_hcam_ldn { 436 struct pmcraid_hcam_hdr header; 437 struct pmcraid_hostrcb_error error_log; 438 } __attribute__((packed, aligned(4))); 439 440 /* pmcraid_hcam.op_code values */ 441 #define HOSTRCB_TYPE_CCN 0xE1 442 #define HOSTRCB_TYPE_LDN 0xE2 443 444 /* pmcraid_hcam.notification_type values */ 445 #define NOTIFICATION_TYPE_ENTRY_CHANGED 0x0 446 #define NOTIFICATION_TYPE_ENTRY_NEW 0x1 447 #define NOTIFICATION_TYPE_ENTRY_DELETED 0x2 448 #define NOTIFICATION_TYPE_STATE_CHANGE 0x3 449 #define NOTIFICATION_TYPE_ENTRY_STATECHANGED 0x4 450 #define NOTIFICATION_TYPE_ERROR_LOG 0x10 451 #define NOTIFICATION_TYPE_INFORMATION_LOG 0x11 452 453 #define HOSTRCB_NOTIFICATIONS_LOST PMC_BIT8(0) 454 455 /* pmcraid_hcam.flags values */ 456 #define HOSTRCB_INTERNAL_OP_ERROR PMC_BIT8(0) 457 #define HOSTRCB_ERROR_RESPONSE_SENT PMC_BIT8(1) 458 459 /* pmcraid_hcam.overlay_id values */ 460 #define HOSTRCB_OVERLAY_ID_08 0x08 461 #define HOSTRCB_OVERLAY_ID_09 0x09 462 #define HOSTRCB_OVERLAY_ID_11 0x11 463 #define HOSTRCB_OVERLAY_ID_12 0x12 464 #define HOSTRCB_OVERLAY_ID_13 0x13 465 #define HOSTRCB_OVERLAY_ID_14 0x14 466 #define HOSTRCB_OVERLAY_ID_16 0x16 467 #define HOSTRCB_OVERLAY_ID_17 0x17 468 #define HOSTRCB_OVERLAY_ID_20 0x20 469 #define HOSTRCB_OVERLAY_ID_FF 0xFF 470 471 /* Implementation specific card details */ 472 struct pmcraid_chip_details { 473 /* hardware register offsets */ 474 unsigned long ioastatus; 475 unsigned long ioarrin; 476 unsigned long mailbox; 477 unsigned long global_intr_mask; 478 unsigned long ioa_host_intr; 479 unsigned long ioa_host_msix_intr; 480 unsigned long ioa_host_intr_clr; 481 unsigned long ioa_host_mask; 482 unsigned long ioa_host_mask_clr; 483 unsigned long host_ioa_intr; 484 unsigned long host_ioa_intr_clr; 485 486 /* timeout used during transitional to operational state */ 487 unsigned long transop_timeout; 488 }; 489 490 /* IOA to HOST doorbells (interrupts) */ 491 #define INTRS_TRANSITION_TO_OPERATIONAL PMC_BIT32(0) 492 #define INTRS_IOARCB_TRANSFER_FAILED PMC_BIT32(3) 493 #define INTRS_IOA_UNIT_CHECK PMC_BIT32(4) 494 #define INTRS_NO_HRRQ_FOR_CMD_RESPONSE PMC_BIT32(5) 495 #define INTRS_CRITICAL_OP_IN_PROGRESS PMC_BIT32(6) 496 #define INTRS_IO_DEBUG_ACK PMC_BIT32(7) 497 #define INTRS_IOARRIN_LOST PMC_BIT32(27) 498 #define INTRS_SYSTEM_BUS_MMIO_ERROR PMC_BIT32(28) 499 #define INTRS_IOA_PROCESSOR_ERROR PMC_BIT32(29) 500 #define INTRS_HRRQ_VALID PMC_BIT32(30) 501 #define INTRS_OPERATIONAL_STATUS PMC_BIT32(0) 502 #define INTRS_ALLOW_MSIX_VECTOR0 PMC_BIT32(31) 503 504 /* Host to IOA Doorbells */ 505 #define DOORBELL_RUNTIME_RESET PMC_BIT32(1) 506 #define DOORBELL_IOA_RESET_ALERT PMC_BIT32(7) 507 #define DOORBELL_IOA_DEBUG_ALERT PMC_BIT32(9) 508 #define DOORBELL_ENABLE_DESTRUCTIVE_DIAGS PMC_BIT32(8) 509 #define DOORBELL_IOA_START_BIST PMC_BIT32(23) 510 #define DOORBELL_INTR_MODE_MSIX PMC_BIT32(25) 511 #define DOORBELL_INTR_MSIX_CLR PMC_BIT32(26) 512 #define DOORBELL_RESET_IOA PMC_BIT32(31) 513 514 /* Global interrupt mask register value */ 515 #define GLOBAL_INTERRUPT_MASK 0x5ULL 516 517 #define PMCRAID_ERROR_INTERRUPTS (INTRS_IOARCB_TRANSFER_FAILED | \ 518 INTRS_IOA_UNIT_CHECK | \ 519 INTRS_NO_HRRQ_FOR_CMD_RESPONSE | \ 520 INTRS_IOARRIN_LOST | \ 521 INTRS_SYSTEM_BUS_MMIO_ERROR | \ 522 INTRS_IOA_PROCESSOR_ERROR) 523 524 #define PMCRAID_PCI_INTERRUPTS (PMCRAID_ERROR_INTERRUPTS | \ 525 INTRS_HRRQ_VALID | \ 526 INTRS_TRANSITION_TO_OPERATIONAL |\ 527 INTRS_ALLOW_MSIX_VECTOR0) 528 529 /* control_block, associated with each of the commands contains IOARCB, IOADLs 530 * memory for IOASA. Additional 3 * 16 bytes are allocated in order to support 531 * additional request parameters (of max size 48) any command. 532 */ 533 struct pmcraid_control_block { 534 struct pmcraid_ioarcb ioarcb; 535 struct pmcraid_ioadl_desc ioadl[PMCRAID_IOADLS_EXTERNAL + 3]; 536 struct pmcraid_ioasa ioasa; 537 } __attribute__ ((packed, aligned(PMCRAID_IOARCB_ALIGNMENT))); 538 539 /* pmcraid_sglist - Scatter-gather list allocated for passthrough ioctls 540 */ 541 struct pmcraid_sglist { 542 u32 order; 543 u32 num_sg; 544 u32 num_dma_sg; 545 struct scatterlist *scatterlist; 546 }; 547 548 /* page D0 inquiry data of focal point resource */ 549 struct pmcraid_inquiry_data { 550 __u8 ph_dev_type; 551 __u8 page_code; 552 __u8 reserved1; 553 __u8 add_page_len; 554 __u8 length; 555 __u8 reserved2; 556 __be16 fw_version; 557 __u8 reserved3[16]; 558 }; 559 560 #define PMCRAID_TIMESTAMP_LEN 12 561 #define PMCRAID_REQ_TM_STR_LEN 6 562 #define PMCRAID_SCSI_SET_TIMESTAMP 0xA4 563 #define PMCRAID_SCSI_SERVICE_ACTION 0x0F 564 565 struct pmcraid_timestamp_data { 566 __u8 reserved1[4]; 567 __u8 timestamp[PMCRAID_REQ_TM_STR_LEN]; /* current time value */ 568 __u8 reserved2[2]; 569 }; 570 571 /* pmcraid_cmd - LLD representation of SCSI command */ 572 struct pmcraid_cmd { 573 574 /* Ptr and bus address of DMA.able control block for this command */ 575 struct pmcraid_control_block *ioa_cb; 576 dma_addr_t ioa_cb_bus_addr; 577 dma_addr_t dma_handle; 578 579 /* pointer to mid layer structure of SCSI commands */ 580 struct scsi_cmnd *scsi_cmd; 581 582 struct list_head free_list; 583 struct completion wait_for_completion; 584 struct timer_list timer; /* needed for internal commands */ 585 u32 timeout; /* current timeout value */ 586 u32 index; /* index into the command list */ 587 u8 completion_req; /* for handling internal commands */ 588 u8 release; /* for handling completions */ 589 590 void (*cmd_done) (struct pmcraid_cmd *); 591 struct pmcraid_instance *drv_inst; 592 593 struct pmcraid_sglist *sglist; /* used for passthrough IOCTLs */ 594 595 /* scratch used */ 596 union { 597 /* during reset sequence */ 598 unsigned long time_left; 599 struct pmcraid_resource_entry *res; 600 int hrrq_index; 601 602 /* used during IO command error handling. Sense buffer 603 * for REQUEST SENSE command if firmware is not sending 604 * auto sense data 605 */ 606 struct { 607 u8 *sense_buffer; 608 dma_addr_t sense_buffer_dma; 609 }; 610 }; 611 }; 612 613 /* 614 * Interrupt registers of IOA 615 */ 616 struct pmcraid_interrupts { 617 void __iomem *ioa_host_interrupt_reg; 618 void __iomem *ioa_host_msix_interrupt_reg; 619 void __iomem *ioa_host_interrupt_clr_reg; 620 void __iomem *ioa_host_interrupt_mask_reg; 621 void __iomem *ioa_host_interrupt_mask_clr_reg; 622 void __iomem *global_interrupt_mask_reg; 623 void __iomem *host_ioa_interrupt_reg; 624 void __iomem *host_ioa_interrupt_clr_reg; 625 }; 626 627 /* ISR parameters LLD allocates (one for each MSI-X if enabled) vectors */ 628 struct pmcraid_isr_param { 629 struct pmcraid_instance *drv_inst; 630 u8 hrrq_id; /* hrrq entry index */ 631 }; 632 633 634 /* AEN message header sent as part of event data to applications */ 635 struct pmcraid_aen_msg { 636 u32 hostno; 637 u32 length; 638 u8 reserved[8]; 639 u8 data[0]; 640 }; 641 642 /* Controller state event message type */ 643 struct pmcraid_state_msg { 644 struct pmcraid_aen_msg msg; 645 u32 ioa_state; 646 }; 647 648 #define PMC_DEVICE_EVENT_RESET_START 0x11000000 649 #define PMC_DEVICE_EVENT_RESET_SUCCESS 0x11000001 650 #define PMC_DEVICE_EVENT_RESET_FAILED 0x11000002 651 #define PMC_DEVICE_EVENT_SHUTDOWN_START 0x11000003 652 #define PMC_DEVICE_EVENT_SHUTDOWN_SUCCESS 0x11000004 653 #define PMC_DEVICE_EVENT_SHUTDOWN_FAILED 0x11000005 654 655 struct pmcraid_hostrcb { 656 struct pmcraid_instance *drv_inst; 657 struct pmcraid_aen_msg *msg; 658 struct pmcraid_hcam_hdr *hcam; /* pointer to hcam buffer */ 659 struct pmcraid_cmd *cmd; /* pointer to command block used */ 660 dma_addr_t baddr; /* system address of hcam buffer */ 661 atomic_t ignore; /* process HCAM response ? */ 662 }; 663 664 #define PMCRAID_AEN_HDR_SIZE sizeof(struct pmcraid_aen_msg) 665 666 667 668 /* 669 * Per adapter structure maintained by LLD 670 */ 671 struct pmcraid_instance { 672 /* Array of allowed-to-be-exposed resources, initialized from 673 * Configutation Table, later updated with CCNs 674 */ 675 struct pmcraid_resource_entry *res_entries; 676 677 struct list_head free_res_q; /* res_entries lists for easy lookup */ 678 struct list_head used_res_q; /* List of to be exposed resources */ 679 spinlock_t resource_lock; /* spinlock to protect resource list */ 680 681 void __iomem *mapped_dma_addr; 682 void __iomem *ioa_status; /* Iomapped IOA status register */ 683 void __iomem *mailbox; /* Iomapped mailbox register */ 684 void __iomem *ioarrin; /* IOmapped IOARR IN register */ 685 686 struct pmcraid_interrupts int_regs; 687 struct pmcraid_chip_details *chip_cfg; 688 689 /* HostRCBs needed for HCAM */ 690 struct pmcraid_hostrcb ldn; 691 struct pmcraid_hostrcb ccn; 692 struct pmcraid_state_msg scn; /* controller state change msg */ 693 694 695 /* Bus address of start of HRRQ */ 696 dma_addr_t hrrq_start_bus_addr[PMCRAID_NUM_MSIX_VECTORS]; 697 698 /* Pointer to 1st entry of HRRQ */ 699 __le32 *hrrq_start[PMCRAID_NUM_MSIX_VECTORS]; 700 701 /* Pointer to last entry of HRRQ */ 702 __le32 *hrrq_end[PMCRAID_NUM_MSIX_VECTORS]; 703 704 /* Pointer to current pointer of hrrq */ 705 __le32 *hrrq_curr[PMCRAID_NUM_MSIX_VECTORS]; 706 707 /* Lock for HRRQ access */ 708 spinlock_t hrrq_lock[PMCRAID_NUM_MSIX_VECTORS]; 709 710 struct pmcraid_inquiry_data *inq_data; 711 dma_addr_t inq_data_baddr; 712 713 struct pmcraid_timestamp_data *timestamp_data; 714 dma_addr_t timestamp_data_baddr; 715 716 /* size of configuration table entry, varies based on the firmware */ 717 u32 config_table_entry_size; 718 719 /* Expected toggle bit at host */ 720 u8 host_toggle_bit[PMCRAID_NUM_MSIX_VECTORS]; 721 722 723 /* Wait Q for threads to wait for Reset IOA completion */ 724 wait_queue_head_t reset_wait_q; 725 struct pmcraid_cmd *reset_cmd; 726 727 /* structures for supporting SIGIO based AEN. */ 728 struct fasync_struct *aen_queue; 729 struct mutex aen_queue_lock; /* lock for aen subscribers list */ 730 struct cdev cdev; 731 732 struct Scsi_Host *host; /* mid layer interface structure handle */ 733 struct pci_dev *pdev; /* PCI device structure handle */ 734 735 /* No of Reset IOA retries . IOA marked dead if threshold exceeds */ 736 u8 ioa_reset_attempts; 737 #define PMCRAID_RESET_ATTEMPTS 3 738 739 u8 current_log_level; /* default level for logging IOASC errors */ 740 741 u8 num_hrrq; /* Number of interrupt vectors allocated */ 742 u8 interrupt_mode; /* current interrupt mode legacy or msix */ 743 dev_t dev; /* Major-Minor numbers for Char device */ 744 745 /* Used as ISR handler argument */ 746 struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS]; 747 748 /* Message id as filled in last fired IOARCB, used to identify HRRQ */ 749 atomic_t last_message_id; 750 751 /* configuration table */ 752 struct pmcraid_config_table *cfg_table; 753 dma_addr_t cfg_table_bus_addr; 754 755 /* structures related to command blocks */ 756 struct kmem_cache *cmd_cachep; /* cache for cmd blocks */ 757 struct dma_pool *control_pool; /* pool for control blocks */ 758 char cmd_pool_name[64]; /* name of cmd cache */ 759 char ctl_pool_name[64]; /* name of control cache */ 760 761 struct pmcraid_cmd *cmd_list[PMCRAID_MAX_CMD]; 762 763 struct list_head free_cmd_pool; 764 struct list_head pending_cmd_pool; 765 spinlock_t free_pool_lock; /* free pool lock */ 766 spinlock_t pending_pool_lock; /* pending pool lock */ 767 768 /* Tasklet to handle deferred processing */ 769 struct tasklet_struct isr_tasklet[PMCRAID_NUM_MSIX_VECTORS]; 770 771 /* Work-queue (Shared) for deferred reset processing */ 772 struct work_struct worker_q; 773 774 /* No of IO commands pending with FW */ 775 atomic_t outstanding_cmds; 776 777 /* should add/delete resources to mid-layer now ?*/ 778 atomic_t expose_resources; 779 780 781 782 u32 ioa_state:4; /* For IOA Reset sequence FSM */ 783 #define IOA_STATE_OPERATIONAL 0x0 784 #define IOA_STATE_UNKNOWN 0x1 785 #define IOA_STATE_DEAD 0x2 786 #define IOA_STATE_IN_SOFT_RESET 0x3 787 #define IOA_STATE_IN_HARD_RESET 0x4 788 #define IOA_STATE_IN_RESET_ALERT 0x5 789 #define IOA_STATE_IN_BRINGDOWN 0x6 790 #define IOA_STATE_IN_BRINGUP 0x7 791 792 u32 ioa_reset_in_progress:1; /* true if IOA reset is in progress */ 793 u32 ioa_hard_reset:1; /* TRUE if Hard Reset is needed */ 794 u32 ioa_unit_check:1; /* Indicates Unit Check condition */ 795 u32 ioa_bringdown:1; /* whether IOA needs to be brought down */ 796 u32 force_ioa_reset:1; /* force adapter reset ? */ 797 u32 reinit_cfg_table:1; /* reinit config table due to lost CCN */ 798 u32 ioa_shutdown_type:2;/* shutdown type used during reset */ 799 #define SHUTDOWN_NONE 0x0 800 #define SHUTDOWN_NORMAL 0x1 801 #define SHUTDOWN_ABBREV 0x2 802 u32 timestamp_error:1; /* indicate set timestamp for out of sync */ 803 804 }; 805 806 /* LLD maintained resource entry structure */ 807 struct pmcraid_resource_entry { 808 struct list_head queue; /* link to "to be exposed" resources */ 809 union { 810 struct pmcraid_config_table_entry cfg_entry; 811 struct pmcraid_config_table_entry_ext cfg_entry_ext; 812 }; 813 struct scsi_device *scsi_dev; /* Link scsi_device structure */ 814 atomic_t read_failures; /* count of failed READ commands */ 815 atomic_t write_failures; /* count of failed WRITE commands */ 816 817 /* To indicate add/delete/modify during CCN */ 818 u8 change_detected; 819 #define RES_CHANGE_ADD 0x1 /* add this to mid-layer */ 820 #define RES_CHANGE_DEL 0x2 /* remove this from mid-layer */ 821 822 u8 reset_progress; /* Device is resetting */ 823 824 /* 825 * When IOA asks for sync (i.e. IOASC = Not Ready, Sync Required), this 826 * flag will be set, mid layer will be asked to retry. In the next 827 * attempt, this flag will be checked in queuecommand() to set 828 * SYNC_COMPLETE flag in IOARCB (flag_0). 829 */ 830 u8 sync_reqd; 831 832 /* target indicates the mapped target_id assigned to this resource if 833 * this is VSET resource. For non-VSET resources this will be un-used 834 * or zero 835 */ 836 u8 target; 837 }; 838 839 /* Data structures used in IOASC error code logging */ 840 struct pmcraid_ioasc_error { 841 u32 ioasc_code; /* IOASC code */ 842 u8 log_level; /* default log level assignment. */ 843 char *error_string; 844 }; 845 846 /* Initial log_level assignments for various IOASCs */ 847 #define IOASC_LOG_LEVEL_NONE 0x0 /* no logging */ 848 #define IOASC_LOG_LEVEL_MUST 0x1 /* must log: all high-severity errors */ 849 #define IOASC_LOG_LEVEL_HARD 0x2 /* optional – low severity errors */ 850 851 /* Error information maintained by LLD. LLD initializes the pmcraid_error_table 852 * statically. 853 */ 854 static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = { 855 {0x01180600, IOASC_LOG_LEVEL_HARD, 856 "Recovered Error, soft media error, sector reassignment suggested"}, 857 {0x015D0000, IOASC_LOG_LEVEL_HARD, 858 "Recovered Error, failure prediction threshold exceeded"}, 859 {0x015D9200, IOASC_LOG_LEVEL_HARD, 860 "Recovered Error, soft Cache Card Battery error threshold"}, 861 {0x015D9200, IOASC_LOG_LEVEL_HARD, 862 "Recovered Error, soft Cache Card Battery error threshold"}, 863 {0x02048000, IOASC_LOG_LEVEL_HARD, 864 "Not Ready, IOA Reset Required"}, 865 {0x02408500, IOASC_LOG_LEVEL_HARD, 866 "Not Ready, IOA microcode download required"}, 867 {0x03110B00, IOASC_LOG_LEVEL_HARD, 868 "Medium Error, data unreadable, reassignment suggested"}, 869 {0x03110C00, IOASC_LOG_LEVEL_MUST, 870 "Medium Error, data unreadable do not reassign"}, 871 {0x03310000, IOASC_LOG_LEVEL_HARD, 872 "Medium Error, media corrupted"}, 873 {0x04050000, IOASC_LOG_LEVEL_HARD, 874 "Hardware Error, IOA can't communicate with device"}, 875 {0x04080000, IOASC_LOG_LEVEL_MUST, 876 "Hardware Error, device bus error"}, 877 {0x04088000, IOASC_LOG_LEVEL_MUST, 878 "Hardware Error, device bus is not functioning"}, 879 {0x04118000, IOASC_LOG_LEVEL_HARD, 880 "Hardware Error, IOA reserved area data check"}, 881 {0x04118100, IOASC_LOG_LEVEL_HARD, 882 "Hardware Error, IOA reserved area invalid data pattern"}, 883 {0x04118200, IOASC_LOG_LEVEL_HARD, 884 "Hardware Error, IOA reserved area LRC error"}, 885 {0x04320000, IOASC_LOG_LEVEL_HARD, 886 "Hardware Error, reassignment space exhausted"}, 887 {0x04330000, IOASC_LOG_LEVEL_HARD, 888 "Hardware Error, data transfer underlength error"}, 889 {0x04330000, IOASC_LOG_LEVEL_HARD, 890 "Hardware Error, data transfer overlength error"}, 891 {0x04418000, IOASC_LOG_LEVEL_MUST, 892 "Hardware Error, PCI bus error"}, 893 {0x04440000, IOASC_LOG_LEVEL_HARD, 894 "Hardware Error, device error"}, 895 {0x04448200, IOASC_LOG_LEVEL_MUST, 896 "Hardware Error, IOA error"}, 897 {0x04448300, IOASC_LOG_LEVEL_HARD, 898 "Hardware Error, undefined device response"}, 899 {0x04448400, IOASC_LOG_LEVEL_HARD, 900 "Hardware Error, IOA microcode error"}, 901 {0x04448600, IOASC_LOG_LEVEL_HARD, 902 "Hardware Error, IOA reset required"}, 903 {0x04449200, IOASC_LOG_LEVEL_HARD, 904 "Hardware Error, hard Cache Fearuee Card Battery error"}, 905 {0x0444A000, IOASC_LOG_LEVEL_HARD, 906 "Hardware Error, failed device altered"}, 907 {0x0444A200, IOASC_LOG_LEVEL_HARD, 908 "Hardware Error, data check after reassignment"}, 909 {0x0444A300, IOASC_LOG_LEVEL_HARD, 910 "Hardware Error, LRC error after reassignment"}, 911 {0x044A0000, IOASC_LOG_LEVEL_HARD, 912 "Hardware Error, device bus error (msg/cmd phase)"}, 913 {0x04670400, IOASC_LOG_LEVEL_HARD, 914 "Hardware Error, new device can't be used"}, 915 {0x04678000, IOASC_LOG_LEVEL_HARD, 916 "Hardware Error, invalid multiadapter configuration"}, 917 {0x04678100, IOASC_LOG_LEVEL_HARD, 918 "Hardware Error, incorrect connection between enclosures"}, 919 {0x04678200, IOASC_LOG_LEVEL_HARD, 920 "Hardware Error, connections exceed IOA design limits"}, 921 {0x04678300, IOASC_LOG_LEVEL_HARD, 922 "Hardware Error, incorrect multipath connection"}, 923 {0x04679000, IOASC_LOG_LEVEL_HARD, 924 "Hardware Error, command to LUN failed"}, 925 {0x064C8000, IOASC_LOG_LEVEL_HARD, 926 "Unit Attention, cache exists for missing/failed device"}, 927 {0x06670100, IOASC_LOG_LEVEL_HARD, 928 "Unit Attention, incompatible exposed mode device"}, 929 {0x06670600, IOASC_LOG_LEVEL_HARD, 930 "Unit Attention, attachment of logical unit failed"}, 931 {0x06678000, IOASC_LOG_LEVEL_HARD, 932 "Unit Attention, cables exceed connective design limit"}, 933 {0x06678300, IOASC_LOG_LEVEL_HARD, 934 "Unit Attention, incomplete multipath connection between" \ 935 "IOA and enclosure"}, 936 {0x06678400, IOASC_LOG_LEVEL_HARD, 937 "Unit Attention, incomplete multipath connection between" \ 938 "device and enclosure"}, 939 {0x06678500, IOASC_LOG_LEVEL_HARD, 940 "Unit Attention, incomplete multipath connection between" \ 941 "IOA and remote IOA"}, 942 {0x06678600, IOASC_LOG_LEVEL_HARD, 943 "Unit Attention, missing remote IOA"}, 944 {0x06679100, IOASC_LOG_LEVEL_HARD, 945 "Unit Attention, enclosure doesn't support required multipath" \ 946 "function"}, 947 {0x06698200, IOASC_LOG_LEVEL_HARD, 948 "Unit Attention, corrupt array parity detected on device"}, 949 {0x066B0200, IOASC_LOG_LEVEL_HARD, 950 "Unit Attention, array exposed"}, 951 {0x066B8200, IOASC_LOG_LEVEL_HARD, 952 "Unit Attention, exposed array is still protected"}, 953 {0x066B9200, IOASC_LOG_LEVEL_HARD, 954 "Unit Attention, Multipath redundancy level got worse"}, 955 {0x07270000, IOASC_LOG_LEVEL_HARD, 956 "Data Protect, device is read/write protected by IOA"}, 957 {0x07278000, IOASC_LOG_LEVEL_HARD, 958 "Data Protect, IOA doesn't support device attribute"}, 959 {0x07278100, IOASC_LOG_LEVEL_HARD, 960 "Data Protect, NVRAM mirroring prohibited"}, 961 {0x07278400, IOASC_LOG_LEVEL_HARD, 962 "Data Protect, array is short 2 or more devices"}, 963 {0x07278600, IOASC_LOG_LEVEL_HARD, 964 "Data Protect, exposed array is short a required device"}, 965 {0x07278700, IOASC_LOG_LEVEL_HARD, 966 "Data Protect, array members not at required addresses"}, 967 {0x07278800, IOASC_LOG_LEVEL_HARD, 968 "Data Protect, exposed mode device resource address conflict"}, 969 {0x07278900, IOASC_LOG_LEVEL_HARD, 970 "Data Protect, incorrect resource address of exposed mode device"}, 971 {0x07278A00, IOASC_LOG_LEVEL_HARD, 972 "Data Protect, Array is missing a device and parity is out of sync"}, 973 {0x07278B00, IOASC_LOG_LEVEL_HARD, 974 "Data Protect, maximum number of arrays already exist"}, 975 {0x07278C00, IOASC_LOG_LEVEL_HARD, 976 "Data Protect, cannot locate cache data for device"}, 977 {0x07278D00, IOASC_LOG_LEVEL_HARD, 978 "Data Protect, cache data exits for a changed device"}, 979 {0x07279100, IOASC_LOG_LEVEL_HARD, 980 "Data Protect, detection of a device requiring format"}, 981 {0x07279200, IOASC_LOG_LEVEL_HARD, 982 "Data Protect, IOA exceeds maximum number of devices"}, 983 {0x07279600, IOASC_LOG_LEVEL_HARD, 984 "Data Protect, missing array, volume set is not functional"}, 985 {0x07279700, IOASC_LOG_LEVEL_HARD, 986 "Data Protect, single device for a volume set"}, 987 {0x07279800, IOASC_LOG_LEVEL_HARD, 988 "Data Protect, missing multiple devices for a volume set"}, 989 {0x07279900, IOASC_LOG_LEVEL_HARD, 990 "Data Protect, maximum number of volument sets already exists"}, 991 {0x07279A00, IOASC_LOG_LEVEL_HARD, 992 "Data Protect, other volume set problem"}, 993 }; 994 995 /* macros to help in debugging */ 996 #define pmcraid_err(...) \ 997 printk(KERN_ERR "MaxRAID: "__VA_ARGS__) 998 999 #define pmcraid_info(...) \ 1000 if (pmcraid_debug_log) \ 1001 printk(KERN_INFO "MaxRAID: "__VA_ARGS__) 1002 1003 /* check if given command is a SCSI READ or SCSI WRITE command */ 1004 #define SCSI_READ_CMD 0x1 /* any of SCSI READ commands */ 1005 #define SCSI_WRITE_CMD 0x2 /* any of SCSI WRITE commands */ 1006 #define SCSI_CMD_TYPE(opcode) \ 1007 ({ u8 op = opcode; u8 __type = 0;\ 1008 if (op == READ_6 || op == READ_10 || op == READ_12 || op == READ_16)\ 1009 __type = SCSI_READ_CMD;\ 1010 else if (op == WRITE_6 || op == WRITE_10 || op == WRITE_12 || \ 1011 op == WRITE_16)\ 1012 __type = SCSI_WRITE_CMD;\ 1013 __type;\ 1014 }) 1015 1016 #define IS_SCSI_READ_WRITE(opcode) \ 1017 ({ u8 __type = SCSI_CMD_TYPE(opcode); \ 1018 (__type == SCSI_READ_CMD || __type == SCSI_WRITE_CMD) ? 1 : 0;\ 1019 }) 1020 1021 1022 /* 1023 * pmcraid_ioctl_header - definition of header structure that precedes all the 1024 * buffers given as ioctl arguments. 1025 * 1026 * .signature : always ASCII string, "PMCRAID" 1027 * .reserved : not used 1028 * .buffer_length : length of the buffer following the header 1029 */ 1030 struct pmcraid_ioctl_header { 1031 u8 signature[8]; 1032 u32 reserved; 1033 u32 buffer_length; 1034 }; 1035 1036 #define PMCRAID_IOCTL_SIGNATURE "PMCRAID" 1037 1038 /* 1039 * pmcraid_passthrough_ioctl_buffer - structure given as argument to 1040 * passthrough(or firmware handled) IOCTL commands. Note that ioarcb requires 1041 * 32-byte alignment so, it is necessary to pack this structure to avoid any 1042 * holes between ioctl_header and passthrough buffer 1043 * 1044 * .ioactl_header : ioctl header 1045 * .ioarcb : filled-up ioarcb buffer, driver always reads this buffer 1046 * .ioasa : buffer for ioasa, driver fills this with IOASA from firmware 1047 * .request_buffer: The I/O buffer (flat), driver reads/writes to this based on 1048 * the transfer directions passed in ioarcb.flags0. Contents 1049 * of this buffer are valid only when ioarcb.data_transfer_len 1050 * is not zero. 1051 */ 1052 struct pmcraid_passthrough_ioctl_buffer { 1053 struct pmcraid_ioctl_header ioctl_header; 1054 struct pmcraid_ioarcb ioarcb; 1055 struct pmcraid_ioasa ioasa; 1056 u8 request_buffer[1]; 1057 } __attribute__ ((packed)); 1058 1059 /* 1060 * keys to differentiate between driver handled IOCTLs and passthrough 1061 * IOCTLs passed to IOA. driver determines the ioctl type using macro 1062 * _IOC_TYPE 1063 */ 1064 #define PMCRAID_DRIVER_IOCTL 'D' 1065 #define PMCRAID_PASSTHROUGH_IOCTL 'F' 1066 1067 #define DRV_IOCTL(n, size) \ 1068 _IOC(_IOC_READ|_IOC_WRITE, PMCRAID_DRIVER_IOCTL, (n), (size)) 1069 1070 #define FMW_IOCTL(n, size) \ 1071 _IOC(_IOC_READ|_IOC_WRITE, PMCRAID_PASSTHROUGH_IOCTL, (n), (size)) 1072 1073 /* 1074 * _ARGSIZE: macro that gives size of the argument type passed to an IOCTL cmd. 1075 * This is to facilitate applications avoiding un-necessary memory allocations. 1076 * For example, most of driver handled ioctls do not require ioarcb, ioasa. 1077 */ 1078 #define _ARGSIZE(arg) (sizeof(struct pmcraid_ioctl_header) + sizeof(arg)) 1079 1080 /* Driver handled IOCTL command definitions */ 1081 1082 #define PMCRAID_IOCTL_RESET_ADAPTER \ 1083 DRV_IOCTL(5, sizeof(struct pmcraid_ioctl_header)) 1084 1085 /* passthrough/firmware handled commands */ 1086 #define PMCRAID_IOCTL_PASSTHROUGH_COMMAND \ 1087 FMW_IOCTL(1, sizeof(struct pmcraid_passthrough_ioctl_buffer)) 1088 1089 #define PMCRAID_IOCTL_DOWNLOAD_MICROCODE \ 1090 FMW_IOCTL(2, sizeof(struct pmcraid_passthrough_ioctl_buffer)) 1091 1092 1093 #endif /* _PMCRAID_H */ 1094