1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2021 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * * 10 * This program is free software; you can redistribute it and/or * 11 * modify it under the terms of version 2 of the GNU General * 12 * Public License as published by the Free Software Foundation. * 13 * This program is distributed in the hope that it will be useful. * 14 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 15 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 16 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 17 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 18 * TO BE LEGALLY INVALID. See the GNU General Public License for * 19 * more details, a copy of which can be found in the file COPYING * 20 * included with this package. * 21 *******************************************************************/ 22 23 #if defined(CONFIG_DEBUG_FS) && !defined(CONFIG_SCSI_LPFC_DEBUG_FS) 24 #define CONFIG_SCSI_LPFC_DEBUG_FS 25 #endif 26 27 /* forward declaration for LPFC_IOCB_t's use */ 28 struct lpfc_hba; 29 struct lpfc_vport; 30 31 /* Define the context types that SLI handles for abort and sums. */ 32 typedef enum _lpfc_ctx_cmd { 33 LPFC_CTX_LUN, 34 LPFC_CTX_TGT, 35 LPFC_CTX_HOST 36 } lpfc_ctx_cmd; 37 38 struct lpfc_cq_event { 39 struct list_head list; 40 uint16_t hdwq; 41 union { 42 struct lpfc_mcqe mcqe_cmpl; 43 struct lpfc_acqe_link acqe_link; 44 struct lpfc_acqe_fip acqe_fip; 45 struct lpfc_acqe_dcbx acqe_dcbx; 46 struct lpfc_acqe_grp5 acqe_grp5; 47 struct lpfc_acqe_fc_la acqe_fc; 48 struct lpfc_acqe_sli acqe_sli; 49 struct lpfc_rcqe rcqe_cmpl; 50 struct sli4_wcqe_xri_aborted wcqe_axri; 51 struct lpfc_wcqe_complete wcqe_cmpl; 52 } cqe; 53 }; 54 55 /* This structure is used to handle IOCB requests / responses */ 56 struct lpfc_iocbq { 57 /* lpfc_iocbqs are used in double linked lists */ 58 struct list_head list; 59 struct list_head clist; 60 struct list_head dlist; 61 uint16_t iotag; /* pre-assigned IO tag */ 62 uint16_t sli4_lxritag; /* logical pre-assigned XRI. */ 63 uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ 64 uint16_t hba_wqidx; /* index to HBA work queue */ 65 struct lpfc_cq_event cq_event; 66 struct lpfc_wcqe_complete wcqe_cmpl; /* WQE cmpl */ 67 uint64_t isr_timestamp; 68 69 union lpfc_wqe128 wqe; /* SLI-4 */ 70 IOCB_t iocb; /* SLI-3 */ 71 72 uint8_t rsvd2; 73 uint8_t priority; /* OAS priority */ 74 uint8_t retry; /* retry counter for IOCB cmd - if needed */ 75 uint32_t iocb_flag; 76 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 77 #define LPFC_IO_WAKE 2 /* Synchronous I/O completed */ 78 #define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */ 79 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 80 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 81 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 82 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 83 #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ 84 #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ 85 #define DSS_SECURITY_OP 0x100 /* security IO */ 86 #define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */ 87 #define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */ 88 #define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */ 89 #define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */ 90 #define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */ 91 92 #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ 93 #define LPFC_FIP_ELS_ID_SHIFT 14 94 95 #define LPFC_IO_OAS 0x10000 /* OAS FCP IO */ 96 #define LPFC_IO_FOF 0x20000 /* FOF FCP IO */ 97 #define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */ 98 #define LPFC_PRLI_NVME_REQ 0x80000 /* This is an NVME PRLI. */ 99 #define LPFC_PRLI_FCP_REQ 0x100000 /* This is an NVME PRLI. */ 100 #define LPFC_IO_NVME 0x200000 /* NVME FCP command */ 101 #define LPFC_IO_NVME_LS 0x400000 /* NVME LS command */ 102 #define LPFC_IO_NVMET 0x800000 /* NVMET command */ 103 104 uint32_t drvrTimeout; /* driver timeout in seconds */ 105 struct lpfc_vport *vport;/* virtual port pointer */ 106 void *context1; /* caller context information */ 107 void *context2; /* caller context information */ 108 void *context3; /* caller context information */ 109 uint32_t event_tag; /* LA Event tag */ 110 union { 111 wait_queue_head_t *wait_queue; 112 struct lpfc_iocbq *rsp_iocb; 113 struct lpfcMboxq *mbox; 114 struct lpfc_nodelist *ndlp; 115 struct lpfc_node_rrq *rrq; 116 } context_un; 117 118 void (*fabric_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 119 struct lpfc_iocbq *); 120 void (*wait_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 121 struct lpfc_iocbq *); 122 void (*iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 123 struct lpfc_iocbq *); 124 void (*wqe_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 125 struct lpfc_wcqe_complete *); 126 }; 127 128 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 129 130 #define IOCB_SUCCESS 0 131 #define IOCB_BUSY 1 132 #define IOCB_ERROR 2 133 #define IOCB_TIMEDOUT 3 134 #define IOCB_ABORTED 4 135 #define IOCB_ABORTING 5 136 #define IOCB_NORESOURCE 6 137 138 #define SLI_WQE_RET_WQE 1 /* Return WQE if cmd ring full */ 139 140 #define WQE_SUCCESS 0 141 #define WQE_BUSY 1 142 #define WQE_ERROR 2 143 #define WQE_TIMEDOUT 3 144 #define WQE_ABORTED 4 145 #define WQE_ABORTING 5 146 #define WQE_NORESOURCE 6 147 148 #define LPFC_MBX_WAKE 1 149 #define LPFC_MBX_IMED_UNREG 2 150 151 typedef struct lpfcMboxq { 152 /* MBOXQs are used in single linked lists */ 153 struct list_head list; /* ptr to next mailbox command */ 154 union { 155 MAILBOX_t mb; /* Mailbox cmd */ 156 struct lpfc_mqe mqe; 157 } u; 158 struct lpfc_vport *vport; /* virtual port pointer */ 159 void *ctx_ndlp; /* caller ndlp information */ 160 void *ctx_buf; /* caller buffer information */ 161 void *context3; 162 163 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 164 uint8_t mbox_flag; 165 uint16_t in_ext_byte_len; 166 uint16_t out_ext_byte_len; 167 uint8_t mbox_offset_word; 168 struct lpfc_mcqe mcqe; 169 struct lpfc_mbx_nembed_sge_virt *sge_array; 170 } LPFC_MBOXQ_t; 171 172 #define MBX_POLL 1 /* poll mailbox till command done, then 173 return */ 174 #define MBX_NOWAIT 2 /* issue command then return immediately */ 175 176 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 177 ring */ 178 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 179 For SLI4, an additional ring for each 180 FCP WQ will be allocated. */ 181 182 struct lpfc_sli_ring; 183 184 struct lpfc_sli_ring_mask { 185 uint8_t profile; /* profile associated with ring */ 186 uint8_t rctl; /* rctl / type pair configured for ring */ 187 uint8_t type; /* rctl / type pair configured for ring */ 188 uint8_t rsvd; 189 /* rcv'd unsol event */ 190 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 191 struct lpfc_sli_ring *, 192 struct lpfc_iocbq *); 193 }; 194 195 196 /* Structure used to hold SLI statistical counters and info */ 197 struct lpfc_sli_ring_stat { 198 uint64_t iocb_event; /* IOCB event counters */ 199 uint64_t iocb_cmd; /* IOCB cmd issued */ 200 uint64_t iocb_rsp; /* IOCB rsp received */ 201 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 202 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 203 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 204 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 205 }; 206 207 struct lpfc_sli3_ring { 208 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 209 uint32_t next_cmdidx; /* next_cmd index */ 210 uint32_t rspidx; /* current index in response ring */ 211 uint32_t cmdidx; /* current index in command ring */ 212 uint16_t numCiocb; /* number of command iocb's per ring */ 213 uint16_t numRiocb; /* number of rsp iocb's per ring */ 214 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 215 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 216 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 217 uint32_t *rspringaddr; /* virtual address for rsp rings */ 218 }; 219 220 struct lpfc_sli4_ring { 221 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 222 }; 223 224 225 /* Structure used to hold SLI ring information */ 226 struct lpfc_sli_ring { 227 uint16_t flag; /* ring flags */ 228 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 229 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 230 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 231 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 232 233 uint8_t rsvd; 234 uint8_t ringno; /* ring number */ 235 236 spinlock_t ring_lock; /* lock for issuing commands */ 237 238 uint32_t fast_iotag; /* max fastlookup based iotag */ 239 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 240 uint32_t iotag_max; /* max iotag value to use */ 241 struct list_head txq; 242 uint16_t txq_cnt; /* current length of queue */ 243 uint16_t txq_max; /* max length */ 244 struct list_head txcmplq; 245 uint16_t txcmplq_cnt; /* current length of queue */ 246 uint16_t txcmplq_max; /* max length */ 247 uint32_t missbufcnt; /* keep track of buffers to post */ 248 struct list_head postbufq; 249 uint16_t postbufq_cnt; /* current length of queue */ 250 uint16_t postbufq_max; /* max length */ 251 struct list_head iocb_continueq; 252 uint16_t iocb_continueq_cnt; /* current length of queue */ 253 uint16_t iocb_continueq_max; /* max length */ 254 struct list_head iocb_continue_saveq; 255 256 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 257 uint32_t num_mask; /* number of mask entries in prt array */ 258 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 259 struct lpfc_sli_ring *, struct lpfc_iocbq *); 260 261 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 262 263 /* cmd ring available */ 264 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 265 struct lpfc_sli_ring *); 266 union { 267 struct lpfc_sli3_ring sli3; 268 struct lpfc_sli4_ring sli4; 269 } sli; 270 }; 271 272 /* Structure used for configuring rings to a specific profile or rctl / type */ 273 struct lpfc_hbq_init { 274 uint32_t rn; /* Receive buffer notification */ 275 uint32_t entry_count; /* max # of entries in HBQ */ 276 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 277 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 278 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 279 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 280 * ring2=b0100 */ 281 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 282 283 uint32_t seqlenoff; 284 uint32_t maxlen; 285 uint32_t seqlenbcnt; 286 uint32_t cmdcodeoff; 287 uint32_t cmdmatch[8]; 288 uint32_t mask_count; /* number of mask entries in prt array */ 289 struct hbq_mask hbqMasks[6]; 290 291 /* Non-config rings fields to keep track of buffer allocations */ 292 uint32_t buffer_count; /* number of buffers allocated */ 293 uint32_t init_count; /* number to allocate when initialized */ 294 uint32_t add_count; /* number to allocate when starved */ 295 } ; 296 297 /* Structure used to hold SLI statistical counters and info */ 298 struct lpfc_sli_stat { 299 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 300 uint64_t mbox_cmd; /* Mailbox commands issued */ 301 uint64_t sli_intr; /* Count of Host Attention interrupts */ 302 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 303 uint64_t sli_ips; /* Host Attention interrupts per sec */ 304 uint32_t err_attn_event; /* Error Attn event counters */ 305 uint32_t link_event; /* Link event counters */ 306 uint32_t mbox_event; /* Mailbox event counters */ 307 uint32_t mbox_busy; /* Mailbox cmd busy */ 308 }; 309 310 /* Structure to store link status values when port stats are reset */ 311 struct lpfc_lnk_stat { 312 uint32_t link_failure_count; 313 uint32_t loss_of_sync_count; 314 uint32_t loss_of_signal_count; 315 uint32_t prim_seq_protocol_err_count; 316 uint32_t invalid_tx_word_count; 317 uint32_t invalid_crc_count; 318 uint32_t error_frames; 319 uint32_t link_events; 320 }; 321 322 /* Structure used to hold SLI information */ 323 struct lpfc_sli { 324 uint32_t num_rings; 325 uint32_t sli_flag; 326 327 /* Additional sli_flags */ 328 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 329 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 330 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 331 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 332 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 333 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 334 #define LPFC_SLI_SUPPRESS_RSP 0x4000 /* Suppress RSP feature is supported */ 335 #define LPFC_SLI_USE_EQDR 0x8000 /* EQ Delay Register is supported */ 336 #define LPFC_QUEUE_FREE_INIT 0x10000 /* Queue freeing is in progress */ 337 #define LPFC_QUEUE_FREE_WAIT 0x20000 /* Hold Queue free as it is being 338 * used outside worker thread 339 */ 340 341 struct lpfc_sli_ring *sli3_ring; 342 343 struct lpfc_sli_stat slistat; /* SLI statistical info */ 344 struct list_head mboxq; 345 uint16_t mboxq_cnt; /* current length of queue */ 346 uint16_t mboxq_max; /* max length */ 347 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 348 struct list_head mboxq_cmpl; 349 350 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 351 cmd */ 352 353 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 354 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 355 size_t iocbq_lookup_len; /* current lengs of the array */ 356 uint16_t last_iotag; /* last allocated IOTAG */ 357 time64_t stats_start; /* in seconds */ 358 struct lpfc_lnk_stat lnk_stat_offsets; 359 }; 360 361 /* Timeout for normal outstanding mbox command (Seconds) */ 362 #define LPFC_MBOX_TMO 30 363 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 364 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 365 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 366 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 367 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 368 #define LPFC_MBOX_TMO_FLASH_CMD 300 369 370 struct lpfc_io_buf { 371 /* Common fields */ 372 struct list_head list; 373 void *data; 374 375 dma_addr_t dma_handle; 376 dma_addr_t dma_phys_sgl; 377 378 struct sli4_sge *dma_sgl; /* initial segment chunk */ 379 380 /* linked list of extra sli4_hybrid_sge */ 381 struct list_head dma_sgl_xtra_list; 382 383 /* list head for fcp_cmd_rsp buf */ 384 struct list_head dma_cmd_rsp_list; 385 386 struct lpfc_iocbq cur_iocbq; 387 struct lpfc_sli4_hdw_queue *hdwq; 388 uint16_t hdwq_no; 389 uint16_t cpu; 390 391 struct lpfc_nodelist *ndlp; 392 uint32_t timeout; 393 uint16_t flags; 394 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 395 #define LPFC_SBUF_BUMP_QDEPTH 0x2 /* bumped queue depth counter */ 396 /* External DIF device IO conversions */ 397 #define LPFC_SBUF_NORMAL_DIF 0x4 /* normal mode to insert/strip */ 398 #define LPFC_SBUF_PASS_DIF 0x8 /* insert/strip mode to passthru */ 399 #define LPFC_SBUF_NOT_POSTED 0x10 /* SGL failed post to FW. */ 400 uint16_t status; /* From IOCB Word 7- ulpStatus */ 401 uint32_t result; /* From IOCB Word 4. */ 402 403 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 404 * dma_map_sg. The driver needs this for calls 405 * to dma_unmap_sg. 406 */ 407 unsigned long start_time; 408 spinlock_t buf_lock; /* lock used in case of simultaneous abort */ 409 bool expedite; /* this is an expedite io_buf */ 410 411 union { 412 /* SCSI specific fields */ 413 struct { 414 struct scsi_cmnd *pCmd; 415 struct lpfc_rport_data *rdata; 416 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for 417 * protection data 418 */ 419 420 /* 421 * data and dma_handle are the kernel virtual and bus 422 * address of the dma-able buffer containing the 423 * fcp_cmd, fcp_rsp and a scatter gather bde list that 424 * supports the sg_tablesize value. 425 */ 426 struct fcp_cmnd *fcp_cmnd; 427 struct fcp_rsp *fcp_rsp; 428 429 wait_queue_head_t *waitq; 430 431 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 432 /* Used to restore any changes to protection data for 433 * error injection 434 */ 435 void *prot_data_segment; 436 uint32_t prot_data; 437 uint32_t prot_data_type; 438 #define LPFC_INJERR_REFTAG 1 439 #define LPFC_INJERR_APPTAG 2 440 #define LPFC_INJERR_GUARD 3 441 #endif 442 }; 443 444 /* NVME specific fields */ 445 struct { 446 struct nvmefc_fcp_req *nvmeCmd; 447 uint16_t qidx; 448 }; 449 }; 450 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 451 uint64_t ts_cmd_start; 452 uint64_t ts_last_cmd; 453 uint64_t ts_cmd_wqput; 454 uint64_t ts_isr_cmpl; 455 uint64_t ts_data_io; 456 #endif 457 }; 458