1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2020 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 union { 110 wait_queue_head_t *wait_queue; 111 struct lpfc_iocbq *rsp_iocb; 112 struct lpfcMboxq *mbox; 113 struct lpfc_nodelist *ndlp; 114 struct lpfc_node_rrq *rrq; 115 } context_un; 116 117 void (*fabric_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 118 struct lpfc_iocbq *); 119 void (*wait_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 120 struct lpfc_iocbq *); 121 void (*iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 122 struct lpfc_iocbq *); 123 void (*wqe_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 124 struct lpfc_wcqe_complete *); 125 }; 126 127 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 128 129 #define IOCB_SUCCESS 0 130 #define IOCB_BUSY 1 131 #define IOCB_ERROR 2 132 #define IOCB_TIMEDOUT 3 133 #define IOCB_ABORTED 4 134 #define IOCB_ABORTING 5 135 #define IOCB_NORESOURCE 6 136 137 #define SLI_WQE_RET_WQE 1 /* Return WQE if cmd ring full */ 138 139 #define WQE_SUCCESS 0 140 #define WQE_BUSY 1 141 #define WQE_ERROR 2 142 #define WQE_TIMEDOUT 3 143 #define WQE_ABORTED 4 144 #define WQE_ABORTING 5 145 #define WQE_NORESOURCE 6 146 147 #define LPFC_MBX_WAKE 1 148 #define LPFC_MBX_IMED_UNREG 2 149 150 typedef struct lpfcMboxq { 151 /* MBOXQs are used in single linked lists */ 152 struct list_head list; /* ptr to next mailbox command */ 153 union { 154 MAILBOX_t mb; /* Mailbox cmd */ 155 struct lpfc_mqe mqe; 156 } u; 157 struct lpfc_vport *vport; /* virtual port pointer */ 158 void *ctx_ndlp; /* caller ndlp information */ 159 void *ctx_buf; /* caller buffer information */ 160 void *context3; 161 162 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 163 uint8_t mbox_flag; 164 uint16_t in_ext_byte_len; 165 uint16_t out_ext_byte_len; 166 uint8_t mbox_offset_word; 167 struct lpfc_mcqe mcqe; 168 struct lpfc_mbx_nembed_sge_virt *sge_array; 169 } LPFC_MBOXQ_t; 170 171 #define MBX_POLL 1 /* poll mailbox till command done, then 172 return */ 173 #define MBX_NOWAIT 2 /* issue command then return immediately */ 174 175 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 176 ring */ 177 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 178 For SLI4, an additional ring for each 179 FCP WQ will be allocated. */ 180 181 struct lpfc_sli_ring; 182 183 struct lpfc_sli_ring_mask { 184 uint8_t profile; /* profile associated with ring */ 185 uint8_t rctl; /* rctl / type pair configured for ring */ 186 uint8_t type; /* rctl / type pair configured for ring */ 187 uint8_t rsvd; 188 /* rcv'd unsol event */ 189 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 190 struct lpfc_sli_ring *, 191 struct lpfc_iocbq *); 192 }; 193 194 195 /* Structure used to hold SLI statistical counters and info */ 196 struct lpfc_sli_ring_stat { 197 uint64_t iocb_event; /* IOCB event counters */ 198 uint64_t iocb_cmd; /* IOCB cmd issued */ 199 uint64_t iocb_rsp; /* IOCB rsp received */ 200 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 201 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 202 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 203 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 204 }; 205 206 struct lpfc_sli3_ring { 207 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 208 uint32_t next_cmdidx; /* next_cmd index */ 209 uint32_t rspidx; /* current index in response ring */ 210 uint32_t cmdidx; /* current index in command ring */ 211 uint16_t numCiocb; /* number of command iocb's per ring */ 212 uint16_t numRiocb; /* number of rsp iocb's per ring */ 213 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 214 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 215 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 216 uint32_t *rspringaddr; /* virtual address for rsp rings */ 217 }; 218 219 struct lpfc_sli4_ring { 220 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 221 }; 222 223 224 /* Structure used to hold SLI ring information */ 225 struct lpfc_sli_ring { 226 uint16_t flag; /* ring flags */ 227 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 228 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 229 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 230 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 231 232 uint8_t rsvd; 233 uint8_t ringno; /* ring number */ 234 235 spinlock_t ring_lock; /* lock for issuing commands */ 236 237 uint32_t fast_iotag; /* max fastlookup based iotag */ 238 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 239 uint32_t iotag_max; /* max iotag value to use */ 240 struct list_head txq; 241 uint16_t txq_cnt; /* current length of queue */ 242 uint16_t txq_max; /* max length */ 243 struct list_head txcmplq; 244 uint16_t txcmplq_cnt; /* current length of queue */ 245 uint16_t txcmplq_max; /* max length */ 246 uint32_t missbufcnt; /* keep track of buffers to post */ 247 struct list_head postbufq; 248 uint16_t postbufq_cnt; /* current length of queue */ 249 uint16_t postbufq_max; /* max length */ 250 struct list_head iocb_continueq; 251 uint16_t iocb_continueq_cnt; /* current length of queue */ 252 uint16_t iocb_continueq_max; /* max length */ 253 struct list_head iocb_continue_saveq; 254 255 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 256 uint32_t num_mask; /* number of mask entries in prt array */ 257 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 258 struct lpfc_sli_ring *, struct lpfc_iocbq *); 259 260 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 261 262 /* cmd ring available */ 263 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 264 struct lpfc_sli_ring *); 265 union { 266 struct lpfc_sli3_ring sli3; 267 struct lpfc_sli4_ring sli4; 268 } sli; 269 }; 270 271 /* Structure used for configuring rings to a specific profile or rctl / type */ 272 struct lpfc_hbq_init { 273 uint32_t rn; /* Receive buffer notification */ 274 uint32_t entry_count; /* max # of entries in HBQ */ 275 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 276 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 277 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 278 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 279 * ring2=b0100 */ 280 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 281 282 uint32_t seqlenoff; 283 uint32_t maxlen; 284 uint32_t seqlenbcnt; 285 uint32_t cmdcodeoff; 286 uint32_t cmdmatch[8]; 287 uint32_t mask_count; /* number of mask entries in prt array */ 288 struct hbq_mask hbqMasks[6]; 289 290 /* Non-config rings fields to keep track of buffer allocations */ 291 uint32_t buffer_count; /* number of buffers allocated */ 292 uint32_t init_count; /* number to allocate when initialized */ 293 uint32_t add_count; /* number to allocate when starved */ 294 } ; 295 296 /* Structure used to hold SLI statistical counters and info */ 297 struct lpfc_sli_stat { 298 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 299 uint64_t mbox_cmd; /* Mailbox commands issued */ 300 uint64_t sli_intr; /* Count of Host Attention interrupts */ 301 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 302 uint64_t sli_ips; /* Host Attention interrupts per sec */ 303 uint32_t err_attn_event; /* Error Attn event counters */ 304 uint32_t link_event; /* Link event counters */ 305 uint32_t mbox_event; /* Mailbox event counters */ 306 uint32_t mbox_busy; /* Mailbox cmd busy */ 307 }; 308 309 /* Structure to store link status values when port stats are reset */ 310 struct lpfc_lnk_stat { 311 uint32_t link_failure_count; 312 uint32_t loss_of_sync_count; 313 uint32_t loss_of_signal_count; 314 uint32_t prim_seq_protocol_err_count; 315 uint32_t invalid_tx_word_count; 316 uint32_t invalid_crc_count; 317 uint32_t error_frames; 318 uint32_t link_events; 319 }; 320 321 /* Structure used to hold SLI information */ 322 struct lpfc_sli { 323 uint32_t num_rings; 324 uint32_t sli_flag; 325 326 /* Additional sli_flags */ 327 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 328 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 329 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 330 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 331 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 332 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 333 #define LPFC_SLI_SUPPRESS_RSP 0x4000 /* Suppress RSP feature is supported */ 334 #define LPFC_SLI_USE_EQDR 0x8000 /* EQ Delay Register is supported */ 335 #define LPFC_QUEUE_FREE_INIT 0x10000 /* Queue freeing is in progress */ 336 #define LPFC_QUEUE_FREE_WAIT 0x20000 /* Hold Queue free as it is being 337 * used outside worker thread 338 */ 339 340 struct lpfc_sli_ring *sli3_ring; 341 342 struct lpfc_sli_stat slistat; /* SLI statistical info */ 343 struct list_head mboxq; 344 uint16_t mboxq_cnt; /* current length of queue */ 345 uint16_t mboxq_max; /* max length */ 346 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 347 struct list_head mboxq_cmpl; 348 349 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 350 cmd */ 351 352 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 353 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 354 size_t iocbq_lookup_len; /* current lengs of the array */ 355 uint16_t last_iotag; /* last allocated IOTAG */ 356 time64_t stats_start; /* in seconds */ 357 struct lpfc_lnk_stat lnk_stat_offsets; 358 }; 359 360 /* Timeout for normal outstanding mbox command (Seconds) */ 361 #define LPFC_MBOX_TMO 30 362 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 363 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 364 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 365 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 366 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 367 #define LPFC_MBOX_TMO_FLASH_CMD 300 368 369 struct lpfc_io_buf { 370 /* Common fields */ 371 struct list_head list; 372 void *data; 373 374 dma_addr_t dma_handle; 375 dma_addr_t dma_phys_sgl; 376 377 struct sli4_sge *dma_sgl; /* initial segment chunk */ 378 379 /* linked list of extra sli4_hybrid_sge */ 380 struct list_head dma_sgl_xtra_list; 381 382 /* list head for fcp_cmd_rsp buf */ 383 struct list_head dma_cmd_rsp_list; 384 385 struct lpfc_iocbq cur_iocbq; 386 struct lpfc_sli4_hdw_queue *hdwq; 387 uint16_t hdwq_no; 388 uint16_t cpu; 389 390 struct lpfc_nodelist *ndlp; 391 uint32_t timeout; 392 uint16_t flags; 393 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 394 #define LPFC_SBUF_BUMP_QDEPTH 0x2 /* bumped queue depth counter */ 395 /* External DIF device IO conversions */ 396 #define LPFC_SBUF_NORMAL_DIF 0x4 /* normal mode to insert/strip */ 397 #define LPFC_SBUF_PASS_DIF 0x8 /* insert/strip mode to passthru */ 398 #define LPFC_SBUF_NOT_POSTED 0x10 /* SGL failed post to FW. */ 399 uint16_t status; /* From IOCB Word 7- ulpStatus */ 400 uint32_t result; /* From IOCB Word 4. */ 401 402 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 403 * dma_map_sg. The driver needs this for calls 404 * to dma_unmap_sg. 405 */ 406 unsigned long start_time; 407 spinlock_t buf_lock; /* lock used in case of simultaneous abort */ 408 bool expedite; /* this is an expedite io_buf */ 409 410 union { 411 /* SCSI specific fields */ 412 struct { 413 struct scsi_cmnd *pCmd; 414 struct lpfc_rport_data *rdata; 415 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for 416 * protection data 417 */ 418 419 /* 420 * data and dma_handle are the kernel virtual and bus 421 * address of the dma-able buffer containing the 422 * fcp_cmd, fcp_rsp and a scatter gather bde list that 423 * supports the sg_tablesize value. 424 */ 425 struct fcp_cmnd *fcp_cmnd; 426 struct fcp_rsp *fcp_rsp; 427 428 wait_queue_head_t *waitq; 429 430 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 431 /* Used to restore any changes to protection data for 432 * error injection 433 */ 434 void *prot_data_segment; 435 uint32_t prot_data; 436 uint32_t prot_data_type; 437 #define LPFC_INJERR_REFTAG 1 438 #define LPFC_INJERR_APPTAG 2 439 #define LPFC_INJERR_GUARD 3 440 #endif 441 }; 442 443 /* NVME specific fields */ 444 struct { 445 struct nvmefc_fcp_req *nvmeCmd; 446 uint16_t qidx; 447 }; 448 }; 449 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 450 uint64_t ts_cmd_start; 451 uint64_t ts_last_cmd; 452 uint64_t ts_cmd_wqput; 453 uint64_t ts_isr_cmpl; 454 uint64_t ts_data_io; 455 #endif 456 }; 457