Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 1 | /* |
| 2 | * ibmvfc.h -- driver for IBM Power Virtual Fibre Channel Adapter |
| 3 | * |
| 4 | * Written By: Brian King <brking@linux.vnet.ibm.com>, IBM Corporation |
| 5 | * |
| 6 | * Copyright (C) IBM Corporation, 2008 |
| 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; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #ifndef _IBMVFC_H |
| 25 | #define _IBMVFC_H |
| 26 | |
| 27 | #include <linux/list.h> |
| 28 | #include <linux/types.h> |
| 29 | #include "viosrp.h" |
| 30 | |
| 31 | #define IBMVFC_NAME "ibmvfc" |
Brian King | 7d0e367 | 2008-08-15 10:59:28 -0500 | [diff] [blame] | 32 | #define IBMVFC_DRIVER_VERSION "1.0.2" |
| 33 | #define IBMVFC_DRIVER_DATE "(August 14, 2008)" |
Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 34 | |
| 35 | #define IBMVFC_DEFAULT_TIMEOUT 15 |
| 36 | #define IBMVFC_INIT_TIMEOUT 30 |
| 37 | #define IBMVFC_MAX_REQUESTS_DEFAULT 100 |
| 38 | |
| 39 | #define IBMVFC_DEBUG 0 |
| 40 | #define IBMVFC_MAX_TARGETS 1024 |
| 41 | #define IBMVFC_MAX_LUN 0xffffffff |
| 42 | #define IBMVFC_MAX_SECTORS 0xffffu |
| 43 | #define IBMVFC_MAX_DISC_THREADS 4 |
| 44 | #define IBMVFC_TGT_MEMPOOL_SZ 64 |
| 45 | #define IBMVFC_MAX_CMDS_PER_LUN 64 |
| 46 | #define IBMVFC_MAX_INIT_RETRIES 3 |
| 47 | #define IBMVFC_DEV_LOSS_TMO (5 * 60) |
| 48 | #define IBMVFC_DEFAULT_LOG_LEVEL 2 |
| 49 | #define IBMVFC_MAX_CDB_LEN 16 |
| 50 | |
| 51 | /* |
| 52 | * Ensure we have resources for ERP and initialization: |
| 53 | * 1 for ERP |
| 54 | * 1 for initialization |
| 55 | * 1 for each discovery thread |
| 56 | */ |
| 57 | #define IBMVFC_NUM_INTERNAL_REQ (1 + 1 + disc_threads) |
| 58 | |
| 59 | #define IBMVFC_MAD_SUCCESS 0x00 |
| 60 | #define IBMVFC_MAD_NOT_SUPPORTED 0xF1 |
| 61 | #define IBMVFC_MAD_FAILED 0xF7 |
| 62 | #define IBMVFC_MAD_DRIVER_FAILED 0xEE |
| 63 | #define IBMVFC_MAD_CRQ_ERROR 0xEF |
| 64 | |
| 65 | enum ibmvfc_crq_valid { |
| 66 | IBMVFC_CRQ_CMD_RSP = 0x80, |
| 67 | IBMVFC_CRQ_INIT_RSP = 0xC0, |
| 68 | IBMVFC_CRQ_XPORT_EVENT = 0xFF, |
| 69 | }; |
| 70 | |
| 71 | enum ibmvfc_crq_format { |
| 72 | IBMVFC_CRQ_INIT = 0x01, |
| 73 | IBMVFC_CRQ_INIT_COMPLETE = 0x02, |
| 74 | IBMVFC_PARTITION_MIGRATED = 0x06, |
| 75 | }; |
| 76 | |
| 77 | enum ibmvfc_cmd_status_flags { |
| 78 | IBMVFC_FABRIC_MAPPED = 0x0001, |
| 79 | IBMVFC_VIOS_FAILURE = 0x0002, |
| 80 | IBMVFC_FC_FAILURE = 0x0004, |
| 81 | IBMVFC_FC_SCSI_ERROR = 0x0008, |
| 82 | IBMVFC_HW_EVENT_LOGGED = 0x0010, |
| 83 | IBMVFC_VIOS_LOGGED = 0x0020, |
| 84 | }; |
| 85 | |
| 86 | enum ibmvfc_fabric_mapped_errors { |
| 87 | IBMVFC_UNABLE_TO_ESTABLISH = 0x0001, |
| 88 | IBMVFC_XPORT_FAULT = 0x0002, |
| 89 | IBMVFC_CMD_TIMEOUT = 0x0003, |
| 90 | IBMVFC_ENETDOWN = 0x0004, |
| 91 | IBMVFC_HW_FAILURE = 0x0005, |
| 92 | IBMVFC_LINK_DOWN_ERR = 0x0006, |
| 93 | IBMVFC_LINK_DEAD_ERR = 0x0007, |
| 94 | IBMVFC_UNABLE_TO_REGISTER = 0x0008, |
| 95 | IBMVFC_XPORT_BUSY = 0x000A, |
| 96 | IBMVFC_XPORT_DEAD = 0x000B, |
| 97 | IBMVFC_CONFIG_ERROR = 0x000C, |
| 98 | IBMVFC_NAME_SERVER_FAIL = 0x000D, |
| 99 | IBMVFC_LINK_HALTED = 0x000E, |
| 100 | IBMVFC_XPORT_GENERAL = 0x8000, |
| 101 | }; |
| 102 | |
| 103 | enum ibmvfc_vios_errors { |
| 104 | IBMVFC_CRQ_FAILURE = 0x0001, |
| 105 | IBMVFC_SW_FAILURE = 0x0002, |
| 106 | IBMVFC_INVALID_PARAMETER = 0x0003, |
| 107 | IBMVFC_MISSING_PARAMETER = 0x0004, |
| 108 | IBMVFC_HOST_IO_BUS = 0x0005, |
| 109 | IBMVFC_TRANS_CANCELLED = 0x0006, |
| 110 | IBMVFC_TRANS_CANCELLED_IMPLICIT = 0x0007, |
| 111 | IBMVFC_INSUFFICIENT_RESOURCE = 0x0008, |
| 112 | IBMVFC_COMMAND_FAILED = 0x8000, |
| 113 | }; |
| 114 | |
| 115 | enum ibmvfc_mad_types { |
| 116 | IBMVFC_NPIV_LOGIN = 0x0001, |
| 117 | IBMVFC_DISC_TARGETS = 0x0002, |
| 118 | IBMVFC_PORT_LOGIN = 0x0004, |
| 119 | IBMVFC_PROCESS_LOGIN = 0x0008, |
| 120 | IBMVFC_QUERY_TARGET = 0x0010, |
| 121 | IBMVFC_IMPLICIT_LOGOUT = 0x0040, |
Brian King | 989b854 | 2008-07-22 08:31:47 -0500 | [diff] [blame] | 122 | IBMVFC_PASSTHRU = 0x0200, |
Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 123 | IBMVFC_TMF_MAD = 0x0100, |
| 124 | }; |
| 125 | |
| 126 | struct ibmvfc_mad_common { |
| 127 | u32 version; |
| 128 | u32 reserved; |
| 129 | u32 opcode; |
| 130 | u16 status; |
| 131 | u16 length; |
| 132 | u64 tag; |
| 133 | }__attribute__((packed, aligned (8))); |
| 134 | |
| 135 | struct ibmvfc_npiv_login_mad { |
| 136 | struct ibmvfc_mad_common common; |
| 137 | struct srp_direct_buf buffer; |
| 138 | }__attribute__((packed, aligned (8))); |
| 139 | |
| 140 | #define IBMVFC_MAX_NAME 256 |
| 141 | |
| 142 | struct ibmvfc_npiv_login { |
| 143 | u32 ostype; |
| 144 | #define IBMVFC_OS_LINUX 0x02 |
| 145 | u32 pad; |
| 146 | u64 max_dma_len; |
| 147 | u32 max_payload; |
| 148 | u32 max_response; |
| 149 | u32 partition_num; |
| 150 | u32 vfc_frame_version; |
| 151 | u16 fcp_version; |
| 152 | u16 flags; |
| 153 | #define IBMVFC_CLIENT_MIGRATED 0x01 |
| 154 | #define IBMVFC_FLUSH_ON_HALT 0x02 |
| 155 | u32 max_cmds; |
| 156 | u64 capabilities; |
| 157 | #define IBMVFC_CAN_MIGRATE 0x01 |
| 158 | u64 node_name; |
| 159 | struct srp_direct_buf async; |
| 160 | u8 partition_name[IBMVFC_MAX_NAME]; |
| 161 | u8 device_name[IBMVFC_MAX_NAME]; |
| 162 | u8 drc_name[IBMVFC_MAX_NAME]; |
| 163 | u64 reserved2[2]; |
| 164 | }__attribute__((packed, aligned (8))); |
| 165 | |
| 166 | struct ibmvfc_common_svc_parms { |
| 167 | u16 fcph_version; |
| 168 | u16 b2b_credit; |
| 169 | u16 features; |
| 170 | u16 bb_rcv_sz; /* upper nibble is BB_SC_N */ |
| 171 | u32 ratov; |
| 172 | u32 edtov; |
| 173 | }__attribute__((packed, aligned (4))); |
| 174 | |
| 175 | struct ibmvfc_service_parms { |
| 176 | struct ibmvfc_common_svc_parms common; |
| 177 | u8 port_name[8]; |
| 178 | u8 node_name[8]; |
| 179 | u32 class1_parms[4]; |
| 180 | u32 class2_parms[4]; |
| 181 | u32 class3_parms[4]; |
| 182 | u32 obsolete[4]; |
| 183 | u32 vendor_version[4]; |
| 184 | u32 services_avail[2]; |
| 185 | u32 ext_len; |
| 186 | u32 reserved[30]; |
| 187 | u32 clk_sync_qos[2]; |
| 188 | }__attribute__((packed, aligned (4))); |
| 189 | |
| 190 | struct ibmvfc_npiv_login_resp { |
| 191 | u32 version; |
| 192 | u16 status; |
| 193 | u16 error; |
| 194 | u32 flags; |
| 195 | #define IBMVFC_NATIVE_FC 0x01 |
| 196 | #define IBMVFC_CAN_FLUSH_ON_HALT 0x08 |
| 197 | u32 reserved; |
| 198 | u64 capabilites; |
| 199 | u32 max_cmds; |
| 200 | u32 scsi_id_sz; |
| 201 | u64 max_dma_len; |
| 202 | u64 scsi_id; |
| 203 | u64 port_name; |
| 204 | u64 node_name; |
| 205 | u64 link_speed; |
| 206 | u8 partition_name[IBMVFC_MAX_NAME]; |
| 207 | u8 device_name[IBMVFC_MAX_NAME]; |
| 208 | u8 port_loc_code[IBMVFC_MAX_NAME]; |
| 209 | u8 drc_name[IBMVFC_MAX_NAME]; |
| 210 | struct ibmvfc_service_parms service_parms; |
| 211 | u64 reserved2; |
| 212 | }__attribute__((packed, aligned (8))); |
| 213 | |
| 214 | union ibmvfc_npiv_login_data { |
| 215 | struct ibmvfc_npiv_login login; |
| 216 | struct ibmvfc_npiv_login_resp resp; |
| 217 | }__attribute__((packed, aligned (8))); |
| 218 | |
| 219 | struct ibmvfc_discover_targets_buf { |
| 220 | u32 scsi_id[1]; |
| 221 | #define IBMVFC_DISC_TGT_SCSI_ID_MASK 0x00ffffff |
| 222 | }; |
| 223 | |
| 224 | struct ibmvfc_discover_targets { |
| 225 | struct ibmvfc_mad_common common; |
| 226 | struct srp_direct_buf buffer; |
| 227 | u32 flags; |
| 228 | u16 status; |
| 229 | u16 error; |
| 230 | u32 bufflen; |
| 231 | u32 num_avail; |
| 232 | u32 num_written; |
| 233 | u64 reserved[2]; |
| 234 | }__attribute__((packed, aligned (8))); |
| 235 | |
| 236 | enum ibmvfc_fc_reason { |
| 237 | IBMVFC_INVALID_ELS_CMD_CODE = 0x01, |
| 238 | IBMVFC_INVALID_VERSION = 0x02, |
| 239 | IBMVFC_LOGICAL_ERROR = 0x03, |
| 240 | IBMVFC_INVALID_CT_IU_SIZE = 0x04, |
| 241 | IBMVFC_LOGICAL_BUSY = 0x05, |
| 242 | IBMVFC_PROTOCOL_ERROR = 0x07, |
| 243 | IBMVFC_UNABLE_TO_PERFORM_REQ = 0x09, |
| 244 | IBMVFC_CMD_NOT_SUPPORTED = 0x0B, |
| 245 | IBMVFC_SERVER_NOT_AVAIL = 0x0D, |
| 246 | IBMVFC_CMD_IN_PROGRESS = 0x0E, |
| 247 | IBMVFC_VENDOR_SPECIFIC = 0xFF, |
| 248 | }; |
| 249 | |
| 250 | enum ibmvfc_fc_type { |
| 251 | IBMVFC_FABRIC_REJECT = 0x01, |
| 252 | IBMVFC_PORT_REJECT = 0x02, |
| 253 | IBMVFC_LS_REJECT = 0x03, |
| 254 | IBMVFC_FABRIC_BUSY = 0x04, |
| 255 | IBMVFC_PORT_BUSY = 0x05, |
| 256 | IBMVFC_BASIC_REJECT = 0x06, |
| 257 | }; |
| 258 | |
| 259 | enum ibmvfc_gs_explain { |
| 260 | IBMVFC_PORT_NAME_NOT_REG = 0x02, |
| 261 | }; |
| 262 | |
| 263 | struct ibmvfc_port_login { |
| 264 | struct ibmvfc_mad_common common; |
| 265 | u64 scsi_id; |
| 266 | u16 reserved; |
| 267 | u16 fc_service_class; |
| 268 | u32 blksz; |
| 269 | u32 hdr_per_blk; |
| 270 | u16 status; |
| 271 | u16 error; /* also fc_reason */ |
| 272 | u16 fc_explain; |
| 273 | u16 fc_type; |
| 274 | u32 reserved2; |
| 275 | struct ibmvfc_service_parms service_parms; |
| 276 | struct ibmvfc_service_parms service_parms_change; |
| 277 | u64 reserved3[2]; |
| 278 | }__attribute__((packed, aligned (8))); |
| 279 | |
| 280 | struct ibmvfc_prli_svc_parms { |
| 281 | u8 type; |
| 282 | #define IBMVFC_SCSI_FCP_TYPE 0x08 |
| 283 | u8 type_ext; |
| 284 | u16 flags; |
| 285 | #define IBMVFC_PRLI_ORIG_PA_VALID 0x8000 |
| 286 | #define IBMVFC_PRLI_RESP_PA_VALID 0x4000 |
| 287 | #define IBMVFC_PRLI_EST_IMG_PAIR 0x2000 |
| 288 | u32 orig_pa; |
| 289 | u32 resp_pa; |
| 290 | u32 service_parms; |
| 291 | #define IBMVFC_PRLI_TASK_RETRY 0x00000200 |
| 292 | #define IBMVFC_PRLI_RETRY 0x00000100 |
| 293 | #define IBMVFC_PRLI_DATA_OVERLAY 0x00000040 |
| 294 | #define IBMVFC_PRLI_INITIATOR_FUNC 0x00000020 |
| 295 | #define IBMVFC_PRLI_TARGET_FUNC 0x00000010 |
| 296 | #define IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED 0x00000002 |
| 297 | #define IBMVFC_PRLI_WR_FCP_XFER_RDY_DISABLED 0x00000001 |
| 298 | }__attribute__((packed, aligned (4))); |
| 299 | |
| 300 | struct ibmvfc_process_login { |
| 301 | struct ibmvfc_mad_common common; |
| 302 | u64 scsi_id; |
| 303 | struct ibmvfc_prli_svc_parms parms; |
| 304 | u8 reserved[48]; |
| 305 | u16 status; |
| 306 | u16 error; /* also fc_reason */ |
| 307 | u32 reserved2; |
| 308 | u64 reserved3[2]; |
| 309 | }__attribute__((packed, aligned (8))); |
| 310 | |
| 311 | struct ibmvfc_query_tgt { |
| 312 | struct ibmvfc_mad_common common; |
| 313 | u64 wwpn; |
| 314 | u64 scsi_id; |
| 315 | u16 status; |
| 316 | u16 error; |
| 317 | u16 fc_explain; |
| 318 | u16 fc_type; |
| 319 | u64 reserved[2]; |
| 320 | }__attribute__((packed, aligned (8))); |
| 321 | |
| 322 | struct ibmvfc_implicit_logout { |
| 323 | struct ibmvfc_mad_common common; |
| 324 | u64 old_scsi_id; |
| 325 | u64 reserved[2]; |
| 326 | }__attribute__((packed, aligned (8))); |
| 327 | |
| 328 | struct ibmvfc_tmf { |
| 329 | struct ibmvfc_mad_common common; |
| 330 | u64 scsi_id; |
| 331 | struct scsi_lun lun; |
| 332 | u32 flags; |
| 333 | #define IBMVFC_TMF_ABORT_TASK 0x02 |
| 334 | #define IBMVFC_TMF_ABORT_TASK_SET 0x04 |
| 335 | #define IBMVFC_TMF_LUN_RESET 0x10 |
| 336 | #define IBMVFC_TMF_TGT_RESET 0x20 |
| 337 | #define IBMVFC_TMF_LUA_VALID 0x40 |
| 338 | u32 cancel_key; |
| 339 | u32 my_cancel_key; |
| 340 | #define IBMVFC_TMF_CANCEL_KEY 0x80000000 |
| 341 | u32 pad; |
| 342 | u64 reserved[2]; |
| 343 | }__attribute__((packed, aligned (8))); |
| 344 | |
| 345 | enum ibmvfc_fcp_rsp_info_codes { |
| 346 | RSP_NO_FAILURE = 0x00, |
| 347 | RSP_TMF_REJECTED = 0x04, |
| 348 | RSP_TMF_FAILED = 0x05, |
| 349 | RSP_TMF_INVALID_LUN = 0x09, |
| 350 | }; |
| 351 | |
| 352 | struct ibmvfc_fcp_rsp_info { |
| 353 | u16 reserved; |
| 354 | u8 rsp_code; |
| 355 | u8 reserved2[4]; |
| 356 | }__attribute__((packed, aligned (2))); |
| 357 | |
| 358 | enum ibmvfc_fcp_rsp_flags { |
| 359 | FCP_BIDI_RSP = 0x80, |
| 360 | FCP_BIDI_READ_RESID_UNDER = 0x40, |
| 361 | FCP_BIDI_READ_RESID_OVER = 0x20, |
| 362 | FCP_CONF_REQ = 0x10, |
| 363 | FCP_RESID_UNDER = 0x08, |
| 364 | FCP_RESID_OVER = 0x04, |
| 365 | FCP_SNS_LEN_VALID = 0x02, |
| 366 | FCP_RSP_LEN_VALID = 0x01, |
| 367 | }; |
| 368 | |
| 369 | union ibmvfc_fcp_rsp_data { |
| 370 | struct ibmvfc_fcp_rsp_info info; |
| 371 | u8 sense[SCSI_SENSE_BUFFERSIZE + sizeof(struct ibmvfc_fcp_rsp_info)]; |
| 372 | }__attribute__((packed, aligned (8))); |
| 373 | |
| 374 | struct ibmvfc_fcp_rsp { |
| 375 | u64 reserved; |
| 376 | u16 retry_delay_timer; |
| 377 | u8 flags; |
| 378 | u8 scsi_status; |
| 379 | u32 fcp_resid; |
| 380 | u32 fcp_sense_len; |
| 381 | u32 fcp_rsp_len; |
| 382 | union ibmvfc_fcp_rsp_data data; |
| 383 | }__attribute__((packed, aligned (8))); |
| 384 | |
| 385 | enum ibmvfc_cmd_flags { |
| 386 | IBMVFC_SCATTERLIST = 0x0001, |
| 387 | IBMVFC_NO_MEM_DESC = 0x0002, |
| 388 | IBMVFC_READ = 0x0004, |
| 389 | IBMVFC_WRITE = 0x0008, |
| 390 | IBMVFC_TMF = 0x0080, |
| 391 | IBMVFC_CLASS_3_ERR = 0x0100, |
| 392 | }; |
| 393 | |
| 394 | enum ibmvfc_fc_task_attr { |
| 395 | IBMVFC_SIMPLE_TASK = 0x00, |
| 396 | IBMVFC_HEAD_OF_QUEUE = 0x01, |
| 397 | IBMVFC_ORDERED_TASK = 0x02, |
| 398 | IBMVFC_ACA_TASK = 0x04, |
| 399 | }; |
| 400 | |
| 401 | enum ibmvfc_fc_tmf_flags { |
| 402 | IBMVFC_ABORT_TASK_SET = 0x02, |
| 403 | IBMVFC_LUN_RESET = 0x10, |
| 404 | IBMVFC_TARGET_RESET = 0x20, |
| 405 | }; |
| 406 | |
| 407 | struct ibmvfc_fcp_cmd_iu { |
| 408 | struct scsi_lun lun; |
| 409 | u8 crn; |
| 410 | u8 pri_task_attr; |
| 411 | u8 tmf_flags; |
| 412 | u8 add_cdb_len; |
| 413 | #define IBMVFC_RDDATA 0x02 |
| 414 | #define IBMVFC_WRDATA 0x01 |
| 415 | u8 cdb[IBMVFC_MAX_CDB_LEN]; |
| 416 | u32 xfer_len; |
| 417 | }__attribute__((packed, aligned (4))); |
| 418 | |
| 419 | struct ibmvfc_cmd { |
| 420 | u64 task_tag; |
| 421 | u32 frame_type; |
| 422 | u32 payload_len; |
| 423 | u32 resp_len; |
| 424 | u32 adapter_resid; |
| 425 | u16 status; |
| 426 | u16 error; |
| 427 | u16 flags; |
| 428 | u16 response_flags; |
| 429 | #define IBMVFC_ADAPTER_RESID_VALID 0x01 |
| 430 | u32 cancel_key; |
| 431 | u32 exchange_id; |
| 432 | struct srp_direct_buf ext_func; |
| 433 | struct srp_direct_buf ioba; |
| 434 | struct srp_direct_buf resp; |
| 435 | u64 correlation; |
| 436 | u64 tgt_scsi_id; |
| 437 | u64 tag; |
| 438 | u64 reserved3[2]; |
| 439 | struct ibmvfc_fcp_cmd_iu iu; |
| 440 | struct ibmvfc_fcp_rsp rsp; |
| 441 | }__attribute__((packed, aligned (8))); |
| 442 | |
Brian King | 989b854 | 2008-07-22 08:31:47 -0500 | [diff] [blame] | 443 | struct ibmvfc_passthru_fc_iu { |
| 444 | u32 payload[7]; |
| 445 | #define IBMVFC_ADISC 0x52000000 |
| 446 | u32 response[7]; |
| 447 | }; |
| 448 | |
| 449 | struct ibmvfc_passthru_iu { |
| 450 | u64 task_tag; |
| 451 | u32 cmd_len; |
| 452 | u32 rsp_len; |
| 453 | u16 status; |
| 454 | u16 error; |
| 455 | u32 flags; |
| 456 | #define IBMVFC_FC_ELS 0x01 |
| 457 | u32 cancel_key; |
| 458 | u32 reserved; |
| 459 | struct srp_direct_buf cmd; |
| 460 | struct srp_direct_buf rsp; |
| 461 | u64 correlation; |
| 462 | u64 scsi_id; |
| 463 | u64 tag; |
| 464 | u64 reserved2[2]; |
| 465 | }__attribute__((packed, aligned (8))); |
| 466 | |
| 467 | struct ibmvfc_passthru_mad { |
| 468 | struct ibmvfc_mad_common common; |
| 469 | struct srp_direct_buf cmd_ioba; |
| 470 | struct ibmvfc_passthru_iu iu; |
| 471 | struct ibmvfc_passthru_fc_iu fc_iu; |
| 472 | }__attribute__((packed, aligned (8))); |
| 473 | |
Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 474 | struct ibmvfc_trace_start_entry { |
| 475 | u32 xfer_len; |
| 476 | }__attribute__((packed)); |
| 477 | |
| 478 | struct ibmvfc_trace_end_entry { |
| 479 | u16 status; |
| 480 | u16 error; |
| 481 | u8 fcp_rsp_flags; |
| 482 | u8 rsp_code; |
| 483 | u8 scsi_status; |
| 484 | u8 reserved; |
| 485 | }__attribute__((packed)); |
| 486 | |
| 487 | struct ibmvfc_trace_entry { |
| 488 | struct ibmvfc_event *evt; |
| 489 | u32 time; |
| 490 | u32 scsi_id; |
| 491 | u32 lun; |
| 492 | u8 fmt; |
| 493 | u8 op_code; |
| 494 | u8 tmf_flags; |
| 495 | u8 type; |
| 496 | #define IBMVFC_TRC_START 0x00 |
| 497 | #define IBMVFC_TRC_END 0xff |
| 498 | union { |
| 499 | struct ibmvfc_trace_start_entry start; |
| 500 | struct ibmvfc_trace_end_entry end; |
| 501 | } u; |
| 502 | }__attribute__((packed, aligned (8))); |
| 503 | |
| 504 | enum ibmvfc_crq_formats { |
| 505 | IBMVFC_CMD_FORMAT = 0x01, |
| 506 | IBMVFC_ASYNC_EVENT = 0x02, |
| 507 | IBMVFC_MAD_FORMAT = 0x04, |
| 508 | }; |
| 509 | |
| 510 | enum ibmvfc_async_event { |
| 511 | IBMVFC_AE_ELS_PLOGI = 0x0001, |
| 512 | IBMVFC_AE_ELS_LOGO = 0x0002, |
| 513 | IBMVFC_AE_ELS_PRLO = 0x0004, |
| 514 | IBMVFC_AE_SCN_NPORT = 0x0008, |
| 515 | IBMVFC_AE_SCN_GROUP = 0x0010, |
| 516 | IBMVFC_AE_SCN_DOMAIN = 0x0020, |
| 517 | IBMVFC_AE_SCN_FABRIC = 0x0040, |
| 518 | IBMVFC_AE_LINK_UP = 0x0080, |
| 519 | IBMVFC_AE_LINK_DOWN = 0x0100, |
| 520 | IBMVFC_AE_LINK_DEAD = 0x0200, |
| 521 | IBMVFC_AE_HALT = 0x0400, |
| 522 | IBMVFC_AE_RESUME = 0x0800, |
| 523 | IBMVFC_AE_ADAPTER_FAILED = 0x1000, |
| 524 | }; |
| 525 | |
| 526 | struct ibmvfc_crq { |
| 527 | u8 valid; |
| 528 | u8 format; |
| 529 | u8 reserved[6]; |
| 530 | u64 ioba; |
| 531 | }__attribute__((packed, aligned (8))); |
| 532 | |
| 533 | struct ibmvfc_crq_queue { |
| 534 | struct ibmvfc_crq *msgs; |
| 535 | int size, cur; |
| 536 | dma_addr_t msg_token; |
| 537 | }; |
| 538 | |
| 539 | struct ibmvfc_async_crq { |
| 540 | u8 valid; |
| 541 | u8 pad[3]; |
| 542 | u32 pad2; |
| 543 | u64 event; |
| 544 | u64 scsi_id; |
| 545 | u64 wwpn; |
| 546 | u64 node_name; |
| 547 | u64 reserved; |
| 548 | }__attribute__((packed, aligned (8))); |
| 549 | |
| 550 | struct ibmvfc_async_crq_queue { |
| 551 | struct ibmvfc_async_crq *msgs; |
| 552 | int size, cur; |
| 553 | dma_addr_t msg_token; |
| 554 | }; |
| 555 | |
| 556 | union ibmvfc_iu { |
| 557 | struct ibmvfc_mad_common mad_common; |
| 558 | struct ibmvfc_npiv_login_mad npiv_login; |
| 559 | struct ibmvfc_discover_targets discover_targets; |
| 560 | struct ibmvfc_port_login plogi; |
| 561 | struct ibmvfc_process_login prli; |
| 562 | struct ibmvfc_query_tgt query_tgt; |
| 563 | struct ibmvfc_implicit_logout implicit_logout; |
| 564 | struct ibmvfc_tmf tmf; |
| 565 | struct ibmvfc_cmd cmd; |
Brian King | 989b854 | 2008-07-22 08:31:47 -0500 | [diff] [blame] | 566 | struct ibmvfc_passthru_mad passthru; |
Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 567 | }__attribute__((packed, aligned (8))); |
| 568 | |
| 569 | enum ibmvfc_target_action { |
| 570 | IBMVFC_TGT_ACTION_NONE = 0, |
| 571 | IBMVFC_TGT_ACTION_INIT, |
| 572 | IBMVFC_TGT_ACTION_INIT_WAIT, |
| 573 | IBMVFC_TGT_ACTION_ADD_RPORT, |
| 574 | IBMVFC_TGT_ACTION_DEL_RPORT, |
| 575 | }; |
| 576 | |
| 577 | struct ibmvfc_target { |
| 578 | struct list_head queue; |
| 579 | struct ibmvfc_host *vhost; |
| 580 | u64 scsi_id; |
| 581 | u64 new_scsi_id; |
| 582 | struct fc_rport *rport; |
| 583 | int target_id; |
| 584 | enum ibmvfc_target_action action; |
| 585 | int need_login; |
| 586 | int init_retries; |
| 587 | struct ibmvfc_service_parms service_parms; |
| 588 | struct ibmvfc_service_parms service_parms_change; |
| 589 | struct fc_rport_identifiers ids; |
| 590 | void (*job_step) (struct ibmvfc_target *); |
| 591 | struct kref kref; |
| 592 | }; |
| 593 | |
| 594 | /* a unit of work for the hosting partition */ |
| 595 | struct ibmvfc_event { |
| 596 | struct list_head queue; |
| 597 | struct ibmvfc_host *vhost; |
| 598 | struct ibmvfc_target *tgt; |
| 599 | struct scsi_cmnd *cmnd; |
| 600 | atomic_t free; |
| 601 | union ibmvfc_iu *xfer_iu; |
| 602 | void (*done) (struct ibmvfc_event *); |
| 603 | struct ibmvfc_crq crq; |
| 604 | union ibmvfc_iu iu; |
| 605 | union ibmvfc_iu *sync_iu; |
| 606 | struct srp_direct_buf *ext_list; |
| 607 | dma_addr_t ext_list_token; |
| 608 | struct completion comp; |
| 609 | struct timer_list timer; |
| 610 | }; |
| 611 | |
| 612 | /* a pool of event structs for use */ |
| 613 | struct ibmvfc_event_pool { |
| 614 | struct ibmvfc_event *events; |
| 615 | u32 size; |
| 616 | union ibmvfc_iu *iu_storage; |
| 617 | dma_addr_t iu_token; |
| 618 | }; |
| 619 | |
| 620 | enum ibmvfc_host_action { |
| 621 | IBMVFC_HOST_ACTION_NONE = 0, |
| 622 | IBMVFC_HOST_ACTION_INIT, |
| 623 | IBMVFC_HOST_ACTION_INIT_WAIT, |
| 624 | IBMVFC_HOST_ACTION_QUERY, |
| 625 | IBMVFC_HOST_ACTION_QUERY_TGTS, |
| 626 | IBMVFC_HOST_ACTION_TGT_DEL, |
| 627 | IBMVFC_HOST_ACTION_ALLOC_TGTS, |
| 628 | IBMVFC_HOST_ACTION_TGT_INIT, |
| 629 | IBMVFC_HOST_ACTION_TGT_ADD, |
| 630 | }; |
| 631 | |
| 632 | enum ibmvfc_host_state { |
| 633 | IBMVFC_NO_CRQ = 0, |
| 634 | IBMVFC_INITIALIZING, |
| 635 | IBMVFC_ACTIVE, |
| 636 | IBMVFC_HALTED, |
| 637 | IBMVFC_LINK_DOWN, |
| 638 | IBMVFC_LINK_DEAD, |
| 639 | IBMVFC_HOST_OFFLINE, |
| 640 | }; |
| 641 | |
| 642 | struct ibmvfc_host { |
| 643 | char name[8]; |
| 644 | struct list_head queue; |
| 645 | struct Scsi_Host *host; |
| 646 | enum ibmvfc_host_state state; |
| 647 | enum ibmvfc_host_action action; |
| 648 | #define IBMVFC_NUM_TRACE_INDEX_BITS 8 |
| 649 | #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) |
| 650 | #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) |
| 651 | struct ibmvfc_trace_entry *trace; |
| 652 | u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; |
| 653 | int num_targets; |
| 654 | struct list_head targets; |
| 655 | struct list_head sent; |
| 656 | struct list_head free; |
| 657 | struct device *dev; |
| 658 | struct ibmvfc_event_pool pool; |
| 659 | struct dma_pool *sg_pool; |
| 660 | mempool_t *tgt_pool; |
| 661 | struct ibmvfc_crq_queue crq; |
| 662 | struct ibmvfc_async_crq_queue async_crq; |
| 663 | struct ibmvfc_npiv_login login_info; |
| 664 | union ibmvfc_npiv_login_data *login_buf; |
| 665 | dma_addr_t login_buf_dma; |
| 666 | int disc_buf_sz; |
| 667 | int log_level; |
| 668 | struct ibmvfc_discover_targets_buf *disc_buf; |
| 669 | int task_set; |
| 670 | int init_retries; |
| 671 | int discovery_threads; |
| 672 | int client_migrated; |
| 673 | int reinit; |
| 674 | int events_to_log; |
| 675 | #define IBMVFC_AE_LINKUP 0x0001 |
| 676 | #define IBMVFC_AE_LINKDOWN 0x0002 |
| 677 | #define IBMVFC_AE_RSCN 0x0004 |
| 678 | dma_addr_t disc_buf_dma; |
| 679 | unsigned int partition_number; |
| 680 | char partition_name[97]; |
| 681 | void (*job_step) (struct ibmvfc_host *); |
| 682 | struct task_struct *work_thread; |
| 683 | wait_queue_head_t init_wait_q; |
| 684 | wait_queue_head_t work_wait_q; |
| 685 | }; |
| 686 | |
| 687 | #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) |
| 688 | |
| 689 | #define tgt_dbg(t, fmt, ...) \ |
| 690 | DBG_CMD(dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__)) |
| 691 | |
Brian King | 989b854 | 2008-07-22 08:31:47 -0500 | [diff] [blame] | 692 | #define tgt_info(t, fmt, ...) \ |
| 693 | dev_info((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__) |
| 694 | |
Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 695 | #define tgt_err(t, fmt, ...) \ |
| 696 | dev_err((t)->vhost->dev, "%lX: " fmt, (t)->scsi_id, ##__VA_ARGS__) |
| 697 | |
| 698 | #define ibmvfc_dbg(vhost, ...) \ |
| 699 | DBG_CMD(dev_info((vhost)->dev, ##__VA_ARGS__)) |
| 700 | |
| 701 | #define ibmvfc_log(vhost, level, ...) \ |
| 702 | do { \ |
| 703 | if (level >= (vhost)->log_level) \ |
| 704 | dev_err((vhost)->dev, ##__VA_ARGS__); \ |
| 705 | } while (0) |
| 706 | |
Harvey Harrison | cadbd4a | 2008-07-03 23:47:27 -0700 | [diff] [blame] | 707 | #define ENTER DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Entering %s\n", __func__)) |
| 708 | #define LEAVE DBG_CMD(printk(KERN_INFO IBMVFC_NAME": Leaving %s\n", __func__)) |
Brian King | 072b91f | 2008-07-01 13:14:30 -0500 | [diff] [blame] | 709 | |
| 710 | #ifdef CONFIG_SCSI_IBMVFC_TRACE |
| 711 | #define ibmvfc_create_trace_file(kobj, attr) sysfs_create_bin_file(kobj, attr) |
| 712 | #define ibmvfc_remove_trace_file(kobj, attr) sysfs_remove_bin_file(kobj, attr) |
| 713 | #else |
| 714 | #define ibmvfc_create_trace_file(kobj, attr) 0 |
| 715 | #define ibmvfc_remove_trace_file(kobj, attr) do { } while (0) |
| 716 | #endif |
| 717 | |
| 718 | #endif |