1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * pmcraid.h -- PMC Sierra MaxRAID controller driver header file 4 * 5 * Written By: Anil Ravindranath<anil_ravindranath@pmc-sierra.com> 6 * PMC-Sierra Inc 7 * 8 * Copyright (C) 2008, 2009 PMC Sierra Inc. 9 */ 10 11 #ifndef _PMCRAID_H 12 #define _PMCRAID_H 13 14 #include <linux/types.h> 15 #include <linux/completion.h> 16 #include <linux/list.h> 17 #include <scsi/scsi.h> 18 #include <scsi/scsi_cmnd.h> 19 #include <linux/cdev.h> 20 #include <net/netlink.h> 21 #include <net/genetlink.h> 22 #include <linux/connector.h> 23 /* 24 * Driver name : string representing the driver name 25 * Device file : /dev file to be used for management interfaces 26 * Driver version: version string in major_version.minor_version.patch format 27 * Driver date : date information in "Mon dd yyyy" format 28 */ 29 #define PMCRAID_DRIVER_NAME "PMC MaxRAID" 30 #define PMCRAID_DEVFILE "pmcsas" 31 #define PMCRAID_DRIVER_VERSION "1.0.3" 32 33 #define PMCRAID_FW_VERSION_1 0x002 34 35 /* Maximum number of adapters supported by current version of the driver */ 36 #define PMCRAID_MAX_ADAPTERS 1024 37 38 /* Bit definitions as per firmware, bit position [0][1][2].....[31] */ 39 #define PMC_BIT8(n) (1 << (7-n)) 40 #define PMC_BIT16(n) (1 << (15-n)) 41 #define PMC_BIT32(n) (1 << (31-n)) 42 43 /* PMC PCI vendor ID and device ID values */ 44 #define PCI_VENDOR_ID_PMC 0x11F8 45 #define PCI_DEVICE_ID_PMC_MAXRAID 0x5220 46 47 /* 48 * MAX_CMD : maximum commands that can be outstanding with IOA 49 * MAX_IO_CMD : command blocks available for IO commands 50 * MAX_HCAM_CMD : command blocks avaibale for HCAMS 51 * MAX_INTERNAL_CMD : command blocks avaible for internal commands like reset 52 */ 53 #define PMCRAID_MAX_CMD 1024 54 #define PMCRAID_MAX_IO_CMD 1020 55 #define PMCRAID_MAX_HCAM_CMD 2 56 #define PMCRAID_MAX_INTERNAL_CMD 2 57 58 /* MAX_IOADLS : max number of scatter-gather lists supported by IOA 59 * IOADLS_INTERNAL : number of ioadls included as part of IOARCB. 60 * IOADLS_EXTERNAL : number of ioadls allocated external to IOARCB 61 */ 62 #define PMCRAID_IOADLS_INTERNAL 27 63 #define PMCRAID_IOADLS_EXTERNAL 37 64 #define PMCRAID_MAX_IOADLS PMCRAID_IOADLS_INTERNAL 65 66 /* HRRQ_ENTRY_SIZE : size of hrrq buffer 67 * IOARCB_ALIGNMENT : alignment required for IOARCB 68 * IOADL_ALIGNMENT : alignment requirement for IOADLs 69 * MSIX_VECTORS : number of MSIX vectors supported 70 */ 71 #define HRRQ_ENTRY_SIZE sizeof(__le32) 72 #define PMCRAID_IOARCB_ALIGNMENT 32 73 #define PMCRAID_IOADL_ALIGNMENT 16 74 #define PMCRAID_IOASA_ALIGNMENT 4 75 #define PMCRAID_NUM_MSIX_VECTORS 16 76 77 /* various other limits */ 78 #define PMCRAID_VENDOR_ID_LEN 8 79 #define PMCRAID_PRODUCT_ID_LEN 16 80 #define PMCRAID_SERIAL_NUM_LEN 8 81 #define PMCRAID_LUN_LEN 8 82 #define PMCRAID_MAX_CDB_LEN 16 83 #define PMCRAID_DEVICE_ID_LEN 8 84 #define PMCRAID_SENSE_DATA_LEN 256 85 #define PMCRAID_ADD_CMD_PARAM_LEN 48 86 87 #define PMCRAID_MAX_BUS_TO_SCAN 1 88 #define PMCRAID_MAX_NUM_TARGETS_PER_BUS 256 89 #define PMCRAID_MAX_NUM_LUNS_PER_TARGET 8 90 91 /* IOA bus/target/lun number of IOA resources */ 92 #define PMCRAID_IOA_BUS_ID 0xfe 93 #define PMCRAID_IOA_TARGET_ID 0xff 94 #define PMCRAID_IOA_LUN_ID 0xff 95 #define PMCRAID_VSET_BUS_ID 0x1 96 #define PMCRAID_VSET_LUN_ID 0x0 97 #define PMCRAID_PHYS_BUS_ID 0x0 98 #define PMCRAID_VIRTUAL_ENCL_BUS_ID 0x8 99 #define PMCRAID_MAX_VSET_TARGETS 0x7F 100 #define PMCRAID_MAX_VSET_LUNS_PER_TARGET 8 101 102 #define PMCRAID_IOA_MAX_SECTORS 32767 103 #define PMCRAID_VSET_MAX_SECTORS 512 104 #define PMCRAID_MAX_CMD_PER_LUN 254 105 106 /* Number of configuration table entries (resources), includes 1 FP, 107 * 1 Enclosure device 108 */ 109 #define PMCRAID_MAX_RESOURCES 256 110 111 /* Adapter Commands used by driver */ 112 #define PMCRAID_QUERY_RESOURCE_STATE 0xC2 113 #define PMCRAID_RESET_DEVICE 0xC3 114 /* options to select reset target */ 115 #define ENABLE_RESET_MODIFIER 0x80 116 #define RESET_DEVICE_LUN 0x40 117 #define RESET_DEVICE_TARGET 0x20 118 #define RESET_DEVICE_BUS 0x10 119 120 #define PMCRAID_IDENTIFY_HRRQ 0xC4 121 #define PMCRAID_QUERY_IOA_CONFIG 0xC5 122 #define PMCRAID_QUERY_CMD_STATUS 0xCB 123 #define PMCRAID_ABORT_CMD 0xC7 124 125 /* CANCEL ALL command, provides option for setting SYNC_COMPLETE 126 * on the target resources for which commands got cancelled 127 */ 128 #define PMCRAID_CANCEL_ALL_REQUESTS 0xCE 129 #define PMCRAID_SYNC_COMPLETE_AFTER_CANCEL PMC_BIT8(0) 130 131 /* HCAM command and types of HCAM supported by IOA */ 132 #define PMCRAID_HOST_CONTROLLED_ASYNC 0xCF 133 #define PMCRAID_HCAM_CODE_CONFIG_CHANGE 0x01 134 #define PMCRAID_HCAM_CODE_LOG_DATA 0x02 135 136 /* IOA shutdown command and various shutdown types */ 137 #define PMCRAID_IOA_SHUTDOWN 0xF7 138 #define PMCRAID_SHUTDOWN_NORMAL 0x00 139 #define PMCRAID_SHUTDOWN_PREPARE_FOR_NORMAL 0x40 140 #define PMCRAID_SHUTDOWN_NONE 0x100 141 #define PMCRAID_SHUTDOWN_ABBREV 0x80 142 143 /* SET SUPPORTED DEVICES command and the option to select all the 144 * devices to be supported 145 */ 146 #define PMCRAID_SET_SUPPORTED_DEVICES 0xFB 147 #define ALL_DEVICES_SUPPORTED PMC_BIT8(0) 148 149 /* This option is used with SCSI WRITE_BUFFER command */ 150 #define PMCRAID_WR_BUF_DOWNLOAD_AND_SAVE 0x05 151 152 /* IOASC Codes used by driver */ 153 #define PMCRAID_IOASC_SENSE_MASK 0xFFFFFF00 154 #define PMCRAID_IOASC_SENSE_KEY(ioasc) ((ioasc) >> 24) 155 #define PMCRAID_IOASC_SENSE_CODE(ioasc) (((ioasc) & 0x00ff0000) >> 16) 156 #define PMCRAID_IOASC_SENSE_QUAL(ioasc) (((ioasc) & 0x0000ff00) >> 8) 157 #define PMCRAID_IOASC_SENSE_STATUS(ioasc) ((ioasc) & 0x000000ff) 158 159 #define PMCRAID_IOASC_GOOD_COMPLETION 0x00000000 160 #define PMCRAID_IOASC_GC_IOARCB_NOTFOUND 0x005A0000 161 #define PMCRAID_IOASC_NR_INIT_CMD_REQUIRED 0x02040200 162 #define PMCRAID_IOASC_NR_IOA_RESET_REQUIRED 0x02048000 163 #define PMCRAID_IOASC_NR_SYNC_REQUIRED 0x023F0000 164 #define PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC 0x03110C00 165 #define PMCRAID_IOASC_HW_CANNOT_COMMUNICATE 0x04050000 166 #define PMCRAID_IOASC_HW_DEVICE_TIMEOUT 0x04080100 167 #define PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR 0x04448500 168 #define PMCRAID_IOASC_HW_IOA_RESET_REQUIRED 0x04448600 169 #define PMCRAID_IOASC_IR_INVALID_RESOURCE_HANDLE 0x05250000 170 #define PMCRAID_IOASC_AC_TERMINATED_BY_HOST 0x0B5A0000 171 #define PMCRAID_IOASC_UA_BUS_WAS_RESET 0x06290000 172 #define PMCRAID_IOASC_TIME_STAMP_OUT_OF_SYNC 0x06908B00 173 #define PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER 0x06298000 174 175 /* Driver defined IOASCs */ 176 #define PMCRAID_IOASC_IOA_WAS_RESET 0x10000001 177 #define PMCRAID_IOASC_PCI_ACCESS_ERROR 0x10000002 178 179 /* Various timeout values (in milliseconds) used. If any of these are chip 180 * specific, move them to pmcraid_chip_details structure. 181 */ 182 #define PMCRAID_PCI_DEASSERT_TIMEOUT 2000 183 #define PMCRAID_BIST_TIMEOUT 2000 184 #define PMCRAID_AENWAIT_TIMEOUT 5000 185 #define PMCRAID_TRANSOP_TIMEOUT 60000 186 187 #define PMCRAID_RESET_TIMEOUT (2 * HZ) 188 #define PMCRAID_CHECK_FOR_RESET_TIMEOUT ((HZ / 10)) 189 #define PMCRAID_VSET_IO_TIMEOUT (60 * HZ) 190 #define PMCRAID_INTERNAL_TIMEOUT (60 * HZ) 191 #define PMCRAID_SHUTDOWN_TIMEOUT (150 * HZ) 192 #define PMCRAID_RESET_BUS_TIMEOUT (60 * HZ) 193 #define PMCRAID_RESET_HOST_TIMEOUT (150 * HZ) 194 #define PMCRAID_REQUEST_SENSE_TIMEOUT (30 * HZ) 195 #define PMCRAID_SET_SUP_DEV_TIMEOUT (2 * 60 * HZ) 196 197 /* structure to represent a scatter-gather element (IOADL descriptor) */ 198 struct pmcraid_ioadl_desc { 199 __le64 address; 200 __le32 data_len; 201 __u8 reserved[3]; 202 __u8 flags; 203 } __attribute__((packed, aligned(PMCRAID_IOADL_ALIGNMENT))); 204 205 /* pmcraid_ioadl_desc.flags values */ 206 #define IOADL_FLAGS_CHAINED PMC_BIT8(0) 207 #define IOADL_FLAGS_LAST_DESC PMC_BIT8(1) 208 #define IOADL_FLAGS_READ_LAST PMC_BIT8(1) 209 #define IOADL_FLAGS_WRITE_LAST PMC_BIT8(1) 210 211 212 /* additional IOARCB data which can be CDB or additional request parameters 213 * or list of IOADLs. Firmware supports max of 512 bytes for IOARCB, hence then 214 * number of IOADLs are limted to 27. In case they are more than 27, they will 215 * be used in chained form 216 */ 217 struct pmcraid_ioarcb_add_data { 218 union { 219 struct pmcraid_ioadl_desc ioadl[PMCRAID_IOADLS_INTERNAL]; 220 __u8 add_cmd_params[PMCRAID_ADD_CMD_PARAM_LEN]; 221 } u; 222 }; 223 224 /* 225 * IOA Request Control Block 226 */ 227 struct pmcraid_ioarcb { 228 __le64 ioarcb_bus_addr; 229 __le32 resource_handle; 230 __le32 response_handle; 231 __le64 ioadl_bus_addr; 232 __le32 ioadl_length; 233 __le32 data_transfer_length; 234 __le64 ioasa_bus_addr; 235 __le16 ioasa_len; 236 __le16 cmd_timeout; 237 __le16 add_cmd_param_offset; 238 __le16 add_cmd_param_length; 239 __le32 reserved1[2]; 240 __le32 reserved2; 241 __u8 request_type; 242 __u8 request_flags0; 243 __u8 request_flags1; 244 __u8 hrrq_id; 245 __u8 cdb[PMCRAID_MAX_CDB_LEN]; 246 struct pmcraid_ioarcb_add_data add_data; 247 } __attribute__((packed, aligned(PMCRAID_IOARCB_ALIGNMENT))); 248 249 /* well known resource handle values */ 250 #define PMCRAID_IOA_RES_HANDLE 0xffffffff 251 #define PMCRAID_INVALID_RES_HANDLE 0 252 253 /* pmcraid_ioarcb.request_type values */ 254 #define REQ_TYPE_SCSI 0x00 255 #define REQ_TYPE_IOACMD 0x01 256 #define REQ_TYPE_HCAM 0x02 257 258 /* pmcraid_ioarcb.flags0 values */ 259 #define TRANSFER_DIR_WRITE PMC_BIT8(0) 260 #define INHIBIT_UL_CHECK PMC_BIT8(2) 261 #define SYNC_OVERRIDE PMC_BIT8(3) 262 #define SYNC_COMPLETE PMC_BIT8(4) 263 #define NO_LINK_DESCS PMC_BIT8(5) 264 265 /* pmcraid_ioarcb.flags1 values */ 266 #define DELAY_AFTER_RESET PMC_BIT8(0) 267 #define TASK_TAG_SIMPLE 0x10 268 #define TASK_TAG_ORDERED 0x20 269 #define TASK_TAG_QUEUE_HEAD 0x30 270 271 /* toggle bit offset in response handle */ 272 #define HRRQ_TOGGLE_BIT 0x01 273 #define HRRQ_RESPONSE_BIT 0x02 274 275 /* IOA Status Area */ 276 struct pmcraid_ioasa_vset { 277 __le32 failing_lba_hi; 278 __le32 failing_lba_lo; 279 __le32 reserved; 280 } __attribute__((packed, aligned(4))); 281 282 struct pmcraid_ioasa { 283 __le32 ioasc; 284 __le16 returned_status_length; 285 __le16 available_status_length; 286 __le32 residual_data_length; 287 __le32 ilid; 288 __le32 fd_ioasc; 289 __le32 fd_res_address; 290 __le32 fd_res_handle; 291 __le32 reserved; 292 293 /* resource specific sense information */ 294 union { 295 struct pmcraid_ioasa_vset vset; 296 } u; 297 298 /* IOA autosense data */ 299 __le16 auto_sense_length; 300 __le16 error_data_length; 301 __u8 sense_data[PMCRAID_SENSE_DATA_LEN]; 302 } __attribute__((packed, aligned(4))); 303 304 #define PMCRAID_DRIVER_ILID 0xffffffff 305 306 /* Config Table Entry per Resource */ 307 struct pmcraid_config_table_entry { 308 __u8 resource_type; 309 __u8 bus_protocol; 310 __le16 array_id; 311 __u8 common_flags0; 312 __u8 common_flags1; 313 __u8 unique_flags0; 314 __u8 unique_flags1; /*also used as vset target_id */ 315 __le32 resource_handle; 316 __le32 resource_address; 317 __u8 device_id[PMCRAID_DEVICE_ID_LEN]; 318 __u8 lun[PMCRAID_LUN_LEN]; 319 } __attribute__((packed, aligned(4))); 320 321 /* extended configuration table sizes are also of 32 bytes in size */ 322 struct pmcraid_config_table_entry_ext { 323 struct pmcraid_config_table_entry cfgte; 324 }; 325 326 /* resource types (config_table_entry.resource_type values) */ 327 #define RES_TYPE_AF_DASD 0x00 328 #define RES_TYPE_GSCSI 0x01 329 #define RES_TYPE_VSET 0x02 330 #define RES_TYPE_IOA_FP 0xFF 331 332 #define RES_IS_IOA(res) ((res).resource_type == RES_TYPE_IOA_FP) 333 #define RES_IS_GSCSI(res) ((res).resource_type == RES_TYPE_GSCSI) 334 #define RES_IS_VSET(res) ((res).resource_type == RES_TYPE_VSET) 335 #define RES_IS_AFDASD(res) ((res).resource_type == RES_TYPE_AF_DASD) 336 337 /* bus_protocol values used by driver */ 338 #define RES_TYPE_VENCLOSURE 0x8 339 340 /* config_table_entry.common_flags0 */ 341 #define MULTIPATH_RESOURCE PMC_BIT32(0) 342 343 /* unique_flags1 */ 344 #define IMPORT_MODE_MANUAL PMC_BIT8(0) 345 346 /* well known resource handle values */ 347 #define RES_HANDLE_IOA 0xFFFFFFFF 348 #define RES_HANDLE_NONE 0x00000000 349 350 /* well known resource address values */ 351 #define RES_ADDRESS_IOAFP 0xFEFFFFFF 352 #define RES_ADDRESS_INVALID 0xFFFFFFFF 353 354 /* BUS/TARGET/LUN values from resource_addrr */ 355 #define RES_BUS(res_addr) (le32_to_cpu(res_addr) & 0xFF) 356 #define RES_TARGET(res_addr) ((le32_to_cpu(res_addr) >> 16) & 0xFF) 357 #define RES_LUN(res_addr) 0x0 358 359 /* configuration table structure */ 360 struct pmcraid_config_table { 361 __le16 num_entries; 362 __u8 table_format; 363 __u8 reserved1; 364 __u8 flags; 365 __u8 reserved2[11]; 366 union { 367 struct pmcraid_config_table_entry 368 entries[PMCRAID_MAX_RESOURCES]; 369 struct pmcraid_config_table_entry_ext 370 entries_ext[PMCRAID_MAX_RESOURCES]; 371 }; 372 } __attribute__((packed, aligned(4))); 373 374 /* config_table.flags value */ 375 #define MICROCODE_UPDATE_REQUIRED PMC_BIT32(0) 376 377 /* 378 * HCAM format 379 */ 380 #define PMCRAID_HOSTRCB_LDNSIZE 4056 381 382 /* Error log notification format */ 383 struct pmcraid_hostrcb_error { 384 __le32 fd_ioasc; 385 __le32 fd_ra; 386 __le32 fd_rh; 387 __le32 prc; 388 union { 389 __u8 data[PMCRAID_HOSTRCB_LDNSIZE]; 390 } u; 391 } __attribute__ ((packed, aligned(4))); 392 393 struct pmcraid_hcam_hdr { 394 __u8 op_code; 395 __u8 notification_type; 396 __u8 notification_lost; 397 __u8 flags; 398 __u8 overlay_id; 399 __u8 reserved1[3]; 400 __le32 ilid; 401 __le32 timestamp1; 402 __le32 timestamp2; 403 __le32 data_len; 404 } __attribute__((packed, aligned(4))); 405 406 #define PMCRAID_AEN_GROUP 0x3 407 408 struct pmcraid_hcam_ccn { 409 struct pmcraid_hcam_hdr header; 410 struct pmcraid_config_table_entry cfg_entry; 411 struct pmcraid_config_table_entry cfg_entry_old; 412 } __attribute__((packed, aligned(4))); 413 414 #define PMCRAID_CCN_EXT_SIZE 3944 415 struct pmcraid_hcam_ccn_ext { 416 struct pmcraid_hcam_hdr header; 417 struct pmcraid_config_table_entry_ext cfg_entry; 418 struct pmcraid_config_table_entry_ext cfg_entry_old; 419 __u8 reserved[PMCRAID_CCN_EXT_SIZE]; 420 } __attribute__((packed, aligned(4))); 421 422 struct pmcraid_hcam_ldn { 423 struct pmcraid_hcam_hdr header; 424 struct pmcraid_hostrcb_error error_log; 425 } __attribute__((packed, aligned(4))); 426 427 /* pmcraid_hcam.op_code values */ 428 #define HOSTRCB_TYPE_CCN 0xE1 429 #define HOSTRCB_TYPE_LDN 0xE2 430 431 /* pmcraid_hcam.notification_type values */ 432 #define NOTIFICATION_TYPE_ENTRY_CHANGED 0x0 433 #define NOTIFICATION_TYPE_ENTRY_NEW 0x1 434 #define NOTIFICATION_TYPE_ENTRY_DELETED 0x2 435 #define NOTIFICATION_TYPE_STATE_CHANGE 0x3 436 #define NOTIFICATION_TYPE_ENTRY_STATECHANGED 0x4 437 #define NOTIFICATION_TYPE_ERROR_LOG 0x10 438 #define NOTIFICATION_TYPE_INFORMATION_LOG 0x11 439 440 #define HOSTRCB_NOTIFICATIONS_LOST PMC_BIT8(0) 441 442 /* pmcraid_hcam.flags values */ 443 #define HOSTRCB_INTERNAL_OP_ERROR PMC_BIT8(0) 444 #define HOSTRCB_ERROR_RESPONSE_SENT PMC_BIT8(1) 445 446 /* pmcraid_hcam.overlay_id values */ 447 #define HOSTRCB_OVERLAY_ID_08 0x08 448 #define HOSTRCB_OVERLAY_ID_09 0x09 449 #define HOSTRCB_OVERLAY_ID_11 0x11 450 #define HOSTRCB_OVERLAY_ID_12 0x12 451 #define HOSTRCB_OVERLAY_ID_13 0x13 452 #define HOSTRCB_OVERLAY_ID_14 0x14 453 #define HOSTRCB_OVERLAY_ID_16 0x16 454 #define HOSTRCB_OVERLAY_ID_17 0x17 455 #define HOSTRCB_OVERLAY_ID_20 0x20 456 #define HOSTRCB_OVERLAY_ID_FF 0xFF 457 458 /* Implementation specific card details */ 459 struct pmcraid_chip_details { 460 /* hardware register offsets */ 461 unsigned long ioastatus; 462 unsigned long ioarrin; 463 unsigned long mailbox; 464 unsigned long global_intr_mask; 465 unsigned long ioa_host_intr; 466 unsigned long ioa_host_msix_intr; 467 unsigned long ioa_host_intr_clr; 468 unsigned long ioa_host_mask; 469 unsigned long ioa_host_mask_clr; 470 unsigned long host_ioa_intr; 471 unsigned long host_ioa_intr_clr; 472 473 /* timeout used during transitional to operational state */ 474 unsigned long transop_timeout; 475 }; 476 477 /* IOA to HOST doorbells (interrupts) */ 478 #define INTRS_TRANSITION_TO_OPERATIONAL PMC_BIT32(0) 479 #define INTRS_IOARCB_TRANSFER_FAILED PMC_BIT32(3) 480 #define INTRS_IOA_UNIT_CHECK PMC_BIT32(4) 481 #define INTRS_NO_HRRQ_FOR_CMD_RESPONSE PMC_BIT32(5) 482 #define INTRS_CRITICAL_OP_IN_PROGRESS PMC_BIT32(6) 483 #define INTRS_IO_DEBUG_ACK PMC_BIT32(7) 484 #define INTRS_IOARRIN_LOST PMC_BIT32(27) 485 #define INTRS_SYSTEM_BUS_MMIO_ERROR PMC_BIT32(28) 486 #define INTRS_IOA_PROCESSOR_ERROR PMC_BIT32(29) 487 #define INTRS_HRRQ_VALID PMC_BIT32(30) 488 #define INTRS_OPERATIONAL_STATUS PMC_BIT32(0) 489 #define INTRS_ALLOW_MSIX_VECTOR0 PMC_BIT32(31) 490 491 /* Host to IOA Doorbells */ 492 #define DOORBELL_RUNTIME_RESET PMC_BIT32(1) 493 #define DOORBELL_IOA_RESET_ALERT PMC_BIT32(7) 494 #define DOORBELL_IOA_DEBUG_ALERT PMC_BIT32(9) 495 #define DOORBELL_ENABLE_DESTRUCTIVE_DIAGS PMC_BIT32(8) 496 #define DOORBELL_IOA_START_BIST PMC_BIT32(23) 497 #define DOORBELL_INTR_MODE_MSIX PMC_BIT32(25) 498 #define DOORBELL_INTR_MSIX_CLR PMC_BIT32(26) 499 #define DOORBELL_RESET_IOA PMC_BIT32(31) 500 501 /* Global interrupt mask register value */ 502 #define GLOBAL_INTERRUPT_MASK 0x5ULL 503 504 #define PMCRAID_ERROR_INTERRUPTS (INTRS_IOARCB_TRANSFER_FAILED | \ 505 INTRS_IOA_UNIT_CHECK | \ 506 INTRS_NO_HRRQ_FOR_CMD_RESPONSE | \ 507 INTRS_IOARRIN_LOST | \ 508 INTRS_SYSTEM_BUS_MMIO_ERROR | \ 509 INTRS_IOA_PROCESSOR_ERROR) 510 511 #define PMCRAID_PCI_INTERRUPTS (PMCRAID_ERROR_INTERRUPTS | \ 512 INTRS_HRRQ_VALID | \ 513 INTRS_TRANSITION_TO_OPERATIONAL |\ 514 INTRS_ALLOW_MSIX_VECTOR0) 515 516 /* control_block, associated with each of the commands contains IOARCB, IOADLs 517 * memory for IOASA. Additional 3 * 16 bytes are allocated in order to support 518 * additional request parameters (of max size 48) any command. 519 */ 520 struct pmcraid_control_block { 521 struct pmcraid_ioarcb ioarcb; 522 struct pmcraid_ioadl_desc ioadl[PMCRAID_IOADLS_EXTERNAL + 3]; 523 struct pmcraid_ioasa ioasa; 524 } __attribute__ ((packed, aligned(PMCRAID_IOARCB_ALIGNMENT))); 525 526 /* pmcraid_sglist - Scatter-gather list allocated for passthrough ioctls 527 */ 528 struct pmcraid_sglist { 529 u32 order; 530 u32 num_sg; 531 u32 num_dma_sg; 532 struct scatterlist *scatterlist; 533 }; 534 535 /* page D0 inquiry data of focal point resource */ 536 struct pmcraid_inquiry_data { 537 __u8 ph_dev_type; 538 __u8 page_code; 539 __u8 reserved1; 540 __u8 add_page_len; 541 __u8 length; 542 __u8 reserved2; 543 __be16 fw_version; 544 __u8 reserved3[16]; 545 }; 546 547 #define PMCRAID_TIMESTAMP_LEN 12 548 #define PMCRAID_REQ_TM_STR_LEN 6 549 #define PMCRAID_SCSI_SET_TIMESTAMP 0xA4 550 #define PMCRAID_SCSI_SERVICE_ACTION 0x0F 551 552 struct pmcraid_timestamp_data { 553 __u8 reserved1[4]; 554 __u8 timestamp[PMCRAID_REQ_TM_STR_LEN]; /* current time value */ 555 __u8 reserved2[2]; 556 }; 557 558 /* pmcraid_cmd - LLD representation of SCSI command */ 559 struct pmcraid_cmd { 560 561 /* Ptr and bus address of DMA.able control block for this command */ 562 struct pmcraid_control_block *ioa_cb; 563 dma_addr_t ioa_cb_bus_addr; 564 dma_addr_t dma_handle; 565 566 /* pointer to mid layer structure of SCSI commands */ 567 struct scsi_cmnd *scsi_cmd; 568 569 struct list_head free_list; 570 struct completion wait_for_completion; 571 struct timer_list timer; /* needed for internal commands */ 572 u32 timeout; /* current timeout value */ 573 u32 index; /* index into the command list */ 574 u8 completion_req; /* for handling internal commands */ 575 u8 release; /* for handling completions */ 576 577 void (*cmd_done) (struct pmcraid_cmd *); 578 struct pmcraid_instance *drv_inst; 579 580 struct pmcraid_sglist *sglist; /* used for passthrough IOCTLs */ 581 582 /* scratch used */ 583 union { 584 /* during reset sequence */ 585 unsigned long time_left; 586 struct pmcraid_resource_entry *res; 587 int hrrq_index; 588 589 /* used during IO command error handling. Sense buffer 590 * for REQUEST SENSE command if firmware is not sending 591 * auto sense data 592 */ 593 struct { 594 u8 *sense_buffer; 595 dma_addr_t sense_buffer_dma; 596 }; 597 }; 598 }; 599 600 /* 601 * Interrupt registers of IOA 602 */ 603 struct pmcraid_interrupts { 604 void __iomem *ioa_host_interrupt_reg; 605 void __iomem *ioa_host_msix_interrupt_reg; 606 void __iomem *ioa_host_interrupt_clr_reg; 607 void __iomem *ioa_host_interrupt_mask_reg; 608 void __iomem *ioa_host_interrupt_mask_clr_reg; 609 void __iomem *global_interrupt_mask_reg; 610 void __iomem *host_ioa_interrupt_reg; 611 void __iomem *host_ioa_interrupt_clr_reg; 612 }; 613 614 /* ISR parameters LLD allocates (one for each MSI-X if enabled) vectors */ 615 struct pmcraid_isr_param { 616 struct pmcraid_instance *drv_inst; 617 u8 hrrq_id; /* hrrq entry index */ 618 }; 619 620 621 /* AEN message header sent as part of event data to applications */ 622 struct pmcraid_aen_msg { 623 u32 hostno; 624 u32 length; 625 u8 reserved[8]; 626 u8 data[0]; 627 }; 628 629 /* Controller state event message type */ 630 struct pmcraid_state_msg { 631 struct pmcraid_aen_msg msg; 632 u32 ioa_state; 633 }; 634 635 #define PMC_DEVICE_EVENT_RESET_START 0x11000000 636 #define PMC_DEVICE_EVENT_RESET_SUCCESS 0x11000001 637 #define PMC_DEVICE_EVENT_RESET_FAILED 0x11000002 638 #define PMC_DEVICE_EVENT_SHUTDOWN_START 0x11000003 639 #define PMC_DEVICE_EVENT_SHUTDOWN_SUCCESS 0x11000004 640 #define PMC_DEVICE_EVENT_SHUTDOWN_FAILED 0x11000005 641 642 struct pmcraid_hostrcb { 643 struct pmcraid_instance *drv_inst; 644 struct pmcraid_aen_msg *msg; 645 struct pmcraid_hcam_hdr *hcam; /* pointer to hcam buffer */ 646 struct pmcraid_cmd *cmd; /* pointer to command block used */ 647 dma_addr_t baddr; /* system address of hcam buffer */ 648 atomic_t ignore; /* process HCAM response ? */ 649 }; 650 651 #define PMCRAID_AEN_HDR_SIZE sizeof(struct pmcraid_aen_msg) 652 653 654 655 /* 656 * Per adapter structure maintained by LLD 657 */ 658 struct pmcraid_instance { 659 /* Array of allowed-to-be-exposed resources, initialized from 660 * Configutation Table, later updated with CCNs 661 */ 662 struct pmcraid_resource_entry *res_entries; 663 664 struct list_head free_res_q; /* res_entries lists for easy lookup */ 665 struct list_head used_res_q; /* List of to be exposed resources */ 666 spinlock_t resource_lock; /* spinlock to protect resource list */ 667 668 void __iomem *mapped_dma_addr; 669 void __iomem *ioa_status; /* Iomapped IOA status register */ 670 void __iomem *mailbox; /* Iomapped mailbox register */ 671 void __iomem *ioarrin; /* IOmapped IOARR IN register */ 672 673 struct pmcraid_interrupts int_regs; 674 struct pmcraid_chip_details *chip_cfg; 675 676 /* HostRCBs needed for HCAM */ 677 struct pmcraid_hostrcb ldn; 678 struct pmcraid_hostrcb ccn; 679 struct pmcraid_state_msg scn; /* controller state change msg */ 680 681 682 /* Bus address of start of HRRQ */ 683 dma_addr_t hrrq_start_bus_addr[PMCRAID_NUM_MSIX_VECTORS]; 684 685 /* Pointer to 1st entry of HRRQ */ 686 __le32 *hrrq_start[PMCRAID_NUM_MSIX_VECTORS]; 687 688 /* Pointer to last entry of HRRQ */ 689 __le32 *hrrq_end[PMCRAID_NUM_MSIX_VECTORS]; 690 691 /* Pointer to current pointer of hrrq */ 692 __le32 *hrrq_curr[PMCRAID_NUM_MSIX_VECTORS]; 693 694 /* Lock for HRRQ access */ 695 spinlock_t hrrq_lock[PMCRAID_NUM_MSIX_VECTORS]; 696 697 struct pmcraid_inquiry_data *inq_data; 698 dma_addr_t inq_data_baddr; 699 700 struct pmcraid_timestamp_data *timestamp_data; 701 dma_addr_t timestamp_data_baddr; 702 703 /* size of configuration table entry, varies based on the firmware */ 704 u32 config_table_entry_size; 705 706 /* Expected toggle bit at host */ 707 u8 host_toggle_bit[PMCRAID_NUM_MSIX_VECTORS]; 708 709 710 /* Wait Q for threads to wait for Reset IOA completion */ 711 wait_queue_head_t reset_wait_q; 712 struct pmcraid_cmd *reset_cmd; 713 714 /* structures for supporting SIGIO based AEN. */ 715 struct fasync_struct *aen_queue; 716 struct mutex aen_queue_lock; /* lock for aen subscribers list */ 717 struct cdev cdev; 718 719 struct Scsi_Host *host; /* mid layer interface structure handle */ 720 struct pci_dev *pdev; /* PCI device structure handle */ 721 722 /* No of Reset IOA retries . IOA marked dead if threshold exceeds */ 723 u8 ioa_reset_attempts; 724 #define PMCRAID_RESET_ATTEMPTS 3 725 726 u8 current_log_level; /* default level for logging IOASC errors */ 727 728 u8 num_hrrq; /* Number of interrupt vectors allocated */ 729 u8 interrupt_mode; /* current interrupt mode legacy or msix */ 730 dev_t dev; /* Major-Minor numbers for Char device */ 731 732 /* Used as ISR handler argument */ 733 struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS]; 734 735 /* Message id as filled in last fired IOARCB, used to identify HRRQ */ 736 atomic_t last_message_id; 737 738 /* configuration table */ 739 struct pmcraid_config_table *cfg_table; 740 dma_addr_t cfg_table_bus_addr; 741 742 /* structures related to command blocks */ 743 struct kmem_cache *cmd_cachep; /* cache for cmd blocks */ 744 struct dma_pool *control_pool; /* pool for control blocks */ 745 char cmd_pool_name[64]; /* name of cmd cache */ 746 char ctl_pool_name[64]; /* name of control cache */ 747 748 struct pmcraid_cmd *cmd_list[PMCRAID_MAX_CMD]; 749 750 struct list_head free_cmd_pool; 751 struct list_head pending_cmd_pool; 752 spinlock_t free_pool_lock; /* free pool lock */ 753 spinlock_t pending_pool_lock; /* pending pool lock */ 754 755 /* Tasklet to handle deferred processing */ 756 struct tasklet_struct isr_tasklet[PMCRAID_NUM_MSIX_VECTORS]; 757 758 /* Work-queue (Shared) for deferred reset processing */ 759 struct work_struct worker_q; 760 761 /* No of IO commands pending with FW */ 762 atomic_t outstanding_cmds; 763 764 /* should add/delete resources to mid-layer now ?*/ 765 atomic_t expose_resources; 766 767 768 769 u32 ioa_state:4; /* For IOA Reset sequence FSM */ 770 #define IOA_STATE_OPERATIONAL 0x0 771 #define IOA_STATE_UNKNOWN 0x1 772 #define IOA_STATE_DEAD 0x2 773 #define IOA_STATE_IN_SOFT_RESET 0x3 774 #define IOA_STATE_IN_HARD_RESET 0x4 775 #define IOA_STATE_IN_RESET_ALERT 0x5 776 #define IOA_STATE_IN_BRINGDOWN 0x6 777 #define IOA_STATE_IN_BRINGUP 0x7 778 779 u32 ioa_reset_in_progress:1; /* true if IOA reset is in progress */ 780 u32 ioa_hard_reset:1; /* TRUE if Hard Reset is needed */ 781 u32 ioa_unit_check:1; /* Indicates Unit Check condition */ 782 u32 ioa_bringdown:1; /* whether IOA needs to be brought down */ 783 u32 force_ioa_reset:1; /* force adapter reset ? */ 784 u32 reinit_cfg_table:1; /* reinit config table due to lost CCN */ 785 u32 ioa_shutdown_type:2;/* shutdown type used during reset */ 786 #define SHUTDOWN_NONE 0x0 787 #define SHUTDOWN_NORMAL 0x1 788 #define SHUTDOWN_ABBREV 0x2 789 u32 timestamp_error:1; /* indicate set timestamp for out of sync */ 790 791 }; 792 793 /* LLD maintained resource entry structure */ 794 struct pmcraid_resource_entry { 795 struct list_head queue; /* link to "to be exposed" resources */ 796 union { 797 struct pmcraid_config_table_entry cfg_entry; 798 struct pmcraid_config_table_entry_ext cfg_entry_ext; 799 }; 800 struct scsi_device *scsi_dev; /* Link scsi_device structure */ 801 atomic_t read_failures; /* count of failed READ commands */ 802 atomic_t write_failures; /* count of failed WRITE commands */ 803 804 /* To indicate add/delete/modify during CCN */ 805 u8 change_detected; 806 #define RES_CHANGE_ADD 0x1 /* add this to mid-layer */ 807 #define RES_CHANGE_DEL 0x2 /* remove this from mid-layer */ 808 809 u8 reset_progress; /* Device is resetting */ 810 811 /* 812 * When IOA asks for sync (i.e. IOASC = Not Ready, Sync Required), this 813 * flag will be set, mid layer will be asked to retry. In the next 814 * attempt, this flag will be checked in queuecommand() to set 815 * SYNC_COMPLETE flag in IOARCB (flag_0). 816 */ 817 u8 sync_reqd; 818 819 /* target indicates the mapped target_id assigned to this resource if 820 * this is VSET resource. For non-VSET resources this will be un-used 821 * or zero 822 */ 823 u8 target; 824 }; 825 826 /* Data structures used in IOASC error code logging */ 827 struct pmcraid_ioasc_error { 828 u32 ioasc_code; /* IOASC code */ 829 u8 log_level; /* default log level assignment. */ 830 char *error_string; 831 }; 832 833 /* Initial log_level assignments for various IOASCs */ 834 #define IOASC_LOG_LEVEL_NONE 0x0 /* no logging */ 835 #define IOASC_LOG_LEVEL_MUST 0x1 /* must log: all high-severity errors */ 836 #define IOASC_LOG_LEVEL_HARD 0x2 /* optional – low severity errors */ 837 838 /* Error information maintained by LLD. LLD initializes the pmcraid_error_table 839 * statically. 840 */ 841 static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = { 842 {0x01180600, IOASC_LOG_LEVEL_HARD, 843 "Recovered Error, soft media error, sector reassignment suggested"}, 844 {0x015D0000, IOASC_LOG_LEVEL_HARD, 845 "Recovered Error, failure prediction threshold exceeded"}, 846 {0x015D9200, IOASC_LOG_LEVEL_HARD, 847 "Recovered Error, soft Cache Card Battery error threshold"}, 848 {0x015D9200, IOASC_LOG_LEVEL_HARD, 849 "Recovered Error, soft Cache Card Battery error threshold"}, 850 {0x02048000, IOASC_LOG_LEVEL_HARD, 851 "Not Ready, IOA Reset Required"}, 852 {0x02408500, IOASC_LOG_LEVEL_HARD, 853 "Not Ready, IOA microcode download required"}, 854 {0x03110B00, IOASC_LOG_LEVEL_HARD, 855 "Medium Error, data unreadable, reassignment suggested"}, 856 {0x03110C00, IOASC_LOG_LEVEL_MUST, 857 "Medium Error, data unreadable do not reassign"}, 858 {0x03310000, IOASC_LOG_LEVEL_HARD, 859 "Medium Error, media corrupted"}, 860 {0x04050000, IOASC_LOG_LEVEL_HARD, 861 "Hardware Error, IOA can't communicate with device"}, 862 {0x04080000, IOASC_LOG_LEVEL_MUST, 863 "Hardware Error, device bus error"}, 864 {0x04088000, IOASC_LOG_LEVEL_MUST, 865 "Hardware Error, device bus is not functioning"}, 866 {0x04118000, IOASC_LOG_LEVEL_HARD, 867 "Hardware Error, IOA reserved area data check"}, 868 {0x04118100, IOASC_LOG_LEVEL_HARD, 869 "Hardware Error, IOA reserved area invalid data pattern"}, 870 {0x04118200, IOASC_LOG_LEVEL_HARD, 871 "Hardware Error, IOA reserved area LRC error"}, 872 {0x04320000, IOASC_LOG_LEVEL_HARD, 873 "Hardware Error, reassignment space exhausted"}, 874 {0x04330000, IOASC_LOG_LEVEL_HARD, 875 "Hardware Error, data transfer underlength error"}, 876 {0x04330000, IOASC_LOG_LEVEL_HARD, 877 "Hardware Error, data transfer overlength error"}, 878 {0x04418000, IOASC_LOG_LEVEL_MUST, 879 "Hardware Error, PCI bus error"}, 880 {0x04440000, IOASC_LOG_LEVEL_HARD, 881 "Hardware Error, device error"}, 882 {0x04448200, IOASC_LOG_LEVEL_MUST, 883 "Hardware Error, IOA error"}, 884 {0x04448300, IOASC_LOG_LEVEL_HARD, 885 "Hardware Error, undefined device response"}, 886 {0x04448400, IOASC_LOG_LEVEL_HARD, 887 "Hardware Error, IOA microcode error"}, 888 {0x04448600, IOASC_LOG_LEVEL_HARD, 889 "Hardware Error, IOA reset required"}, 890 {0x04449200, IOASC_LOG_LEVEL_HARD, 891 "Hardware Error, hard Cache Fearuee Card Battery error"}, 892 {0x0444A000, IOASC_LOG_LEVEL_HARD, 893 "Hardware Error, failed device altered"}, 894 {0x0444A200, IOASC_LOG_LEVEL_HARD, 895 "Hardware Error, data check after reassignment"}, 896 {0x0444A300, IOASC_LOG_LEVEL_HARD, 897 "Hardware Error, LRC error after reassignment"}, 898 {0x044A0000, IOASC_LOG_LEVEL_HARD, 899 "Hardware Error, device bus error (msg/cmd phase)"}, 900 {0x04670400, IOASC_LOG_LEVEL_HARD, 901 "Hardware Error, new device can't be used"}, 902 {0x04678000, IOASC_LOG_LEVEL_HARD, 903 "Hardware Error, invalid multiadapter configuration"}, 904 {0x04678100, IOASC_LOG_LEVEL_HARD, 905 "Hardware Error, incorrect connection between enclosures"}, 906 {0x04678200, IOASC_LOG_LEVEL_HARD, 907 "Hardware Error, connections exceed IOA design limits"}, 908 {0x04678300, IOASC_LOG_LEVEL_HARD, 909 "Hardware Error, incorrect multipath connection"}, 910 {0x04679000, IOASC_LOG_LEVEL_HARD, 911 "Hardware Error, command to LUN failed"}, 912 {0x064C8000, IOASC_LOG_LEVEL_HARD, 913 "Unit Attention, cache exists for missing/failed device"}, 914 {0x06670100, IOASC_LOG_LEVEL_HARD, 915 "Unit Attention, incompatible exposed mode device"}, 916 {0x06670600, IOASC_LOG_LEVEL_HARD, 917 "Unit Attention, attachment of logical unit failed"}, 918 {0x06678000, IOASC_LOG_LEVEL_HARD, 919 "Unit Attention, cables exceed connective design limit"}, 920 {0x06678300, IOASC_LOG_LEVEL_HARD, 921 "Unit Attention, incomplete multipath connection between" \ 922 "IOA and enclosure"}, 923 {0x06678400, IOASC_LOG_LEVEL_HARD, 924 "Unit Attention, incomplete multipath connection between" \ 925 "device and enclosure"}, 926 {0x06678500, IOASC_LOG_LEVEL_HARD, 927 "Unit Attention, incomplete multipath connection between" \ 928 "IOA and remote IOA"}, 929 {0x06678600, IOASC_LOG_LEVEL_HARD, 930 "Unit Attention, missing remote IOA"}, 931 {0x06679100, IOASC_LOG_LEVEL_HARD, 932 "Unit Attention, enclosure doesn't support required multipath" \ 933 "function"}, 934 {0x06698200, IOASC_LOG_LEVEL_HARD, 935 "Unit Attention, corrupt array parity detected on device"}, 936 {0x066B0200, IOASC_LOG_LEVEL_HARD, 937 "Unit Attention, array exposed"}, 938 {0x066B8200, IOASC_LOG_LEVEL_HARD, 939 "Unit Attention, exposed array is still protected"}, 940 {0x066B9200, IOASC_LOG_LEVEL_HARD, 941 "Unit Attention, Multipath redundancy level got worse"}, 942 {0x07270000, IOASC_LOG_LEVEL_HARD, 943 "Data Protect, device is read/write protected by IOA"}, 944 {0x07278000, IOASC_LOG_LEVEL_HARD, 945 "Data Protect, IOA doesn't support device attribute"}, 946 {0x07278100, IOASC_LOG_LEVEL_HARD, 947 "Data Protect, NVRAM mirroring prohibited"}, 948 {0x07278400, IOASC_LOG_LEVEL_HARD, 949 "Data Protect, array is short 2 or more devices"}, 950 {0x07278600, IOASC_LOG_LEVEL_HARD, 951 "Data Protect, exposed array is short a required device"}, 952 {0x07278700, IOASC_LOG_LEVEL_HARD, 953 "Data Protect, array members not at required addresses"}, 954 {0x07278800, IOASC_LOG_LEVEL_HARD, 955 "Data Protect, exposed mode device resource address conflict"}, 956 {0x07278900, IOASC_LOG_LEVEL_HARD, 957 "Data Protect, incorrect resource address of exposed mode device"}, 958 {0x07278A00, IOASC_LOG_LEVEL_HARD, 959 "Data Protect, Array is missing a device and parity is out of sync"}, 960 {0x07278B00, IOASC_LOG_LEVEL_HARD, 961 "Data Protect, maximum number of arrays already exist"}, 962 {0x07278C00, IOASC_LOG_LEVEL_HARD, 963 "Data Protect, cannot locate cache data for device"}, 964 {0x07278D00, IOASC_LOG_LEVEL_HARD, 965 "Data Protect, cache data exits for a changed device"}, 966 {0x07279100, IOASC_LOG_LEVEL_HARD, 967 "Data Protect, detection of a device requiring format"}, 968 {0x07279200, IOASC_LOG_LEVEL_HARD, 969 "Data Protect, IOA exceeds maximum number of devices"}, 970 {0x07279600, IOASC_LOG_LEVEL_HARD, 971 "Data Protect, missing array, volume set is not functional"}, 972 {0x07279700, IOASC_LOG_LEVEL_HARD, 973 "Data Protect, single device for a volume set"}, 974 {0x07279800, IOASC_LOG_LEVEL_HARD, 975 "Data Protect, missing multiple devices for a volume set"}, 976 {0x07279900, IOASC_LOG_LEVEL_HARD, 977 "Data Protect, maximum number of volument sets already exists"}, 978 {0x07279A00, IOASC_LOG_LEVEL_HARD, 979 "Data Protect, other volume set problem"}, 980 }; 981 982 /* macros to help in debugging */ 983 #define pmcraid_err(...) \ 984 printk(KERN_ERR "MaxRAID: "__VA_ARGS__) 985 986 #define pmcraid_info(...) \ 987 if (pmcraid_debug_log) \ 988 printk(KERN_INFO "MaxRAID: "__VA_ARGS__) 989 990 /* check if given command is a SCSI READ or SCSI WRITE command */ 991 #define SCSI_READ_CMD 0x1 /* any of SCSI READ commands */ 992 #define SCSI_WRITE_CMD 0x2 /* any of SCSI WRITE commands */ 993 #define SCSI_CMD_TYPE(opcode) \ 994 ({ u8 op = opcode; u8 __type = 0;\ 995 if (op == READ_6 || op == READ_10 || op == READ_12 || op == READ_16)\ 996 __type = SCSI_READ_CMD;\ 997 else if (op == WRITE_6 || op == WRITE_10 || op == WRITE_12 || \ 998 op == WRITE_16)\ 999 __type = SCSI_WRITE_CMD;\ 1000 __type;\ 1001 }) 1002 1003 #define IS_SCSI_READ_WRITE(opcode) \ 1004 ({ u8 __type = SCSI_CMD_TYPE(opcode); \ 1005 (__type == SCSI_READ_CMD || __type == SCSI_WRITE_CMD) ? 1 : 0;\ 1006 }) 1007 1008 1009 /* 1010 * pmcraid_ioctl_header - definition of header structure that precedes all the 1011 * buffers given as ioctl arguments. 1012 * 1013 * .signature : always ASCII string, "PMCRAID" 1014 * .reserved : not used 1015 * .buffer_length : length of the buffer following the header 1016 */ 1017 struct pmcraid_ioctl_header { 1018 u8 signature[8]; 1019 u32 reserved; 1020 u32 buffer_length; 1021 }; 1022 1023 #define PMCRAID_IOCTL_SIGNATURE "PMCRAID" 1024 1025 /* 1026 * pmcraid_passthrough_ioctl_buffer - structure given as argument to 1027 * passthrough(or firmware handled) IOCTL commands. Note that ioarcb requires 1028 * 32-byte alignment so, it is necessary to pack this structure to avoid any 1029 * holes between ioctl_header and passthrough buffer 1030 * 1031 * .ioactl_header : ioctl header 1032 * .ioarcb : filled-up ioarcb buffer, driver always reads this buffer 1033 * .ioasa : buffer for ioasa, driver fills this with IOASA from firmware 1034 * .request_buffer: The I/O buffer (flat), driver reads/writes to this based on 1035 * the transfer directions passed in ioarcb.flags0. Contents 1036 * of this buffer are valid only when ioarcb.data_transfer_len 1037 * is not zero. 1038 */ 1039 struct pmcraid_passthrough_ioctl_buffer { 1040 struct pmcraid_ioctl_header ioctl_header; 1041 struct pmcraid_ioarcb ioarcb; 1042 struct pmcraid_ioasa ioasa; 1043 u8 request_buffer[1]; 1044 } __attribute__ ((packed)); 1045 1046 /* 1047 * keys to differentiate between driver handled IOCTLs and passthrough 1048 * IOCTLs passed to IOA. driver determines the ioctl type using macro 1049 * _IOC_TYPE 1050 */ 1051 #define PMCRAID_DRIVER_IOCTL 'D' 1052 #define PMCRAID_PASSTHROUGH_IOCTL 'F' 1053 1054 #define DRV_IOCTL(n, size) \ 1055 _IOC(_IOC_READ|_IOC_WRITE, PMCRAID_DRIVER_IOCTL, (n), (size)) 1056 1057 #define FMW_IOCTL(n, size) \ 1058 _IOC(_IOC_READ|_IOC_WRITE, PMCRAID_PASSTHROUGH_IOCTL, (n), (size)) 1059 1060 /* 1061 * _ARGSIZE: macro that gives size of the argument type passed to an IOCTL cmd. 1062 * This is to facilitate applications avoiding un-necessary memory allocations. 1063 * For example, most of driver handled ioctls do not require ioarcb, ioasa. 1064 */ 1065 #define _ARGSIZE(arg) (sizeof(struct pmcraid_ioctl_header) + sizeof(arg)) 1066 1067 /* Driver handled IOCTL command definitions */ 1068 1069 #define PMCRAID_IOCTL_RESET_ADAPTER \ 1070 DRV_IOCTL(5, sizeof(struct pmcraid_ioctl_header)) 1071 1072 /* passthrough/firmware handled commands */ 1073 #define PMCRAID_IOCTL_PASSTHROUGH_COMMAND \ 1074 FMW_IOCTL(1, sizeof(struct pmcraid_passthrough_ioctl_buffer)) 1075 1076 #define PMCRAID_IOCTL_DOWNLOAD_MICROCODE \ 1077 FMW_IOCTL(2, sizeof(struct pmcraid_passthrough_ioctl_buffer)) 1078 1079 1080 #endif /* _PMCRAID_H */ 1081