1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 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 3 133 134 #define SLI_WQE_RET_WQE 1 /* Return WQE if cmd ring full */ 135 136 #define WQE_SUCCESS 0 137 #define WQE_BUSY 1 138 #define WQE_ERROR 2 139 #define WQE_TIMEDOUT 3 140 #define WQE_ABORTED 4 141 142 #define LPFC_MBX_WAKE 1 143 #define LPFC_MBX_IMED_UNREG 2 144 145 typedef struct lpfcMboxq { 146 /* MBOXQs are used in single linked lists */ 147 struct list_head list; /* ptr to next mailbox command */ 148 union { 149 MAILBOX_t mb; /* Mailbox cmd */ 150 struct lpfc_mqe mqe; 151 } u; 152 struct lpfc_vport *vport; /* virtual port pointer */ 153 void *ctx_ndlp; /* caller ndlp information */ 154 void *ctx_buf; /* caller buffer information */ 155 void *context3; 156 157 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 158 uint8_t mbox_flag; 159 uint16_t in_ext_byte_len; 160 uint16_t out_ext_byte_len; 161 uint8_t mbox_offset_word; 162 struct lpfc_mcqe mcqe; 163 struct lpfc_mbx_nembed_sge_virt *sge_array; 164 } LPFC_MBOXQ_t; 165 166 #define MBX_POLL 1 /* poll mailbox till command done, then 167 return */ 168 #define MBX_NOWAIT 2 /* issue command then return immediately */ 169 170 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 171 ring */ 172 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 173 For SLI4, an additional ring for each 174 FCP WQ will be allocated. */ 175 176 struct lpfc_sli_ring; 177 178 struct lpfc_sli_ring_mask { 179 uint8_t profile; /* profile associated with ring */ 180 uint8_t rctl; /* rctl / type pair configured for ring */ 181 uint8_t type; /* rctl / type pair configured for ring */ 182 uint8_t rsvd; 183 /* rcv'd unsol event */ 184 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 185 struct lpfc_sli_ring *, 186 struct lpfc_iocbq *); 187 }; 188 189 190 /* Structure used to hold SLI statistical counters and info */ 191 struct lpfc_sli_ring_stat { 192 uint64_t iocb_event; /* IOCB event counters */ 193 uint64_t iocb_cmd; /* IOCB cmd issued */ 194 uint64_t iocb_rsp; /* IOCB rsp received */ 195 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 196 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 197 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 198 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 199 }; 200 201 struct lpfc_sli3_ring { 202 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 203 uint32_t next_cmdidx; /* next_cmd index */ 204 uint32_t rspidx; /* current index in response ring */ 205 uint32_t cmdidx; /* current index in command ring */ 206 uint16_t numCiocb; /* number of command iocb's per ring */ 207 uint16_t numRiocb; /* number of rsp iocb's per ring */ 208 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 209 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 210 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 211 uint32_t *rspringaddr; /* virtual address for rsp rings */ 212 }; 213 214 struct lpfc_sli4_ring { 215 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 216 }; 217 218 219 /* Structure used to hold SLI ring information */ 220 struct lpfc_sli_ring { 221 uint16_t flag; /* ring flags */ 222 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 223 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 224 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 225 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 226 227 uint8_t rsvd; 228 uint8_t ringno; /* ring number */ 229 230 spinlock_t ring_lock; /* lock for issuing commands */ 231 232 uint32_t fast_iotag; /* max fastlookup based iotag */ 233 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 234 uint32_t iotag_max; /* max iotag value to use */ 235 struct list_head txq; 236 uint16_t txq_cnt; /* current length of queue */ 237 uint16_t txq_max; /* max length */ 238 struct list_head txcmplq; 239 uint16_t txcmplq_cnt; /* current length of queue */ 240 uint16_t txcmplq_max; /* max length */ 241 uint32_t missbufcnt; /* keep track of buffers to post */ 242 struct list_head postbufq; 243 uint16_t postbufq_cnt; /* current length of queue */ 244 uint16_t postbufq_max; /* max length */ 245 struct list_head iocb_continueq; 246 uint16_t iocb_continueq_cnt; /* current length of queue */ 247 uint16_t iocb_continueq_max; /* max length */ 248 struct list_head iocb_continue_saveq; 249 250 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 251 uint32_t num_mask; /* number of mask entries in prt array */ 252 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 253 struct lpfc_sli_ring *, struct lpfc_iocbq *); 254 255 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 256 257 /* cmd ring available */ 258 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 259 struct lpfc_sli_ring *); 260 union { 261 struct lpfc_sli3_ring sli3; 262 struct lpfc_sli4_ring sli4; 263 } sli; 264 }; 265 266 /* Structure used for configuring rings to a specific profile or rctl / type */ 267 struct lpfc_hbq_init { 268 uint32_t rn; /* Receive buffer notification */ 269 uint32_t entry_count; /* max # of entries in HBQ */ 270 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 271 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 272 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 273 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 274 * ring2=b0100 */ 275 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 276 277 uint32_t seqlenoff; 278 uint32_t maxlen; 279 uint32_t seqlenbcnt; 280 uint32_t cmdcodeoff; 281 uint32_t cmdmatch[8]; 282 uint32_t mask_count; /* number of mask entries in prt array */ 283 struct hbq_mask hbqMasks[6]; 284 285 /* Non-config rings fields to keep track of buffer allocations */ 286 uint32_t buffer_count; /* number of buffers allocated */ 287 uint32_t init_count; /* number to allocate when initialized */ 288 uint32_t add_count; /* number to allocate when starved */ 289 } ; 290 291 /* Structure used to hold SLI statistical counters and info */ 292 struct lpfc_sli_stat { 293 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 294 uint64_t mbox_cmd; /* Mailbox commands issued */ 295 uint64_t sli_intr; /* Count of Host Attention interrupts */ 296 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 297 uint64_t sli_ips; /* Host Attention interrupts per sec */ 298 uint32_t err_attn_event; /* Error Attn event counters */ 299 uint32_t link_event; /* Link event counters */ 300 uint32_t mbox_event; /* Mailbox event counters */ 301 uint32_t mbox_busy; /* Mailbox cmd busy */ 302 }; 303 304 /* Structure to store link status values when port stats are reset */ 305 struct lpfc_lnk_stat { 306 uint32_t link_failure_count; 307 uint32_t loss_of_sync_count; 308 uint32_t loss_of_signal_count; 309 uint32_t prim_seq_protocol_err_count; 310 uint32_t invalid_tx_word_count; 311 uint32_t invalid_crc_count; 312 uint32_t error_frames; 313 uint32_t link_events; 314 }; 315 316 /* Structure used to hold SLI information */ 317 struct lpfc_sli { 318 uint32_t num_rings; 319 uint32_t sli_flag; 320 321 /* Additional sli_flags */ 322 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 323 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 324 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 325 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 326 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 327 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 328 #define LPFC_SLI_SUPPRESS_RSP 0x4000 /* Suppress RSP feature is supported */ 329 #define LPFC_SLI_USE_EQDR 0x8000 /* EQ Delay Register is supported */ 330 #define LPFC_QUEUE_FREE_INIT 0x10000 /* Queue freeing is in progress */ 331 #define LPFC_QUEUE_FREE_WAIT 0x20000 /* Hold Queue free as it is being 332 * used outside worker thread 333 */ 334 335 struct lpfc_sli_ring *sli3_ring; 336 337 struct lpfc_sli_stat slistat; /* SLI statistical info */ 338 struct list_head mboxq; 339 uint16_t mboxq_cnt; /* current length of queue */ 340 uint16_t mboxq_max; /* max length */ 341 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 342 struct list_head mboxq_cmpl; 343 344 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 345 cmd */ 346 347 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 348 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 349 size_t iocbq_lookup_len; /* current lengs of the array */ 350 uint16_t last_iotag; /* last allocated IOTAG */ 351 time64_t stats_start; /* in seconds */ 352 struct lpfc_lnk_stat lnk_stat_offsets; 353 }; 354 355 /* Timeout for normal outstanding mbox command (Seconds) */ 356 #define LPFC_MBOX_TMO 30 357 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 358 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 359 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 360 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 361 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 362 #define LPFC_MBOX_TMO_FLASH_CMD 300 363 364 struct lpfc_io_buf { 365 /* Common fields */ 366 struct list_head list; 367 void *data; 368 369 dma_addr_t dma_handle; 370 dma_addr_t dma_phys_sgl; 371 372 struct sli4_sge *dma_sgl; /* initial segment chunk */ 373 374 /* linked list of extra sli4_hybrid_sge */ 375 struct list_head dma_sgl_xtra_list; 376 377 /* list head for fcp_cmd_rsp buf */ 378 struct list_head dma_cmd_rsp_list; 379 380 struct lpfc_iocbq cur_iocbq; 381 struct lpfc_sli4_hdw_queue *hdwq; 382 uint16_t hdwq_no; 383 uint16_t cpu; 384 385 struct lpfc_nodelist *ndlp; 386 uint32_t timeout; 387 uint16_t flags; /* TBD convert exch_busy to flags */ 388 #define LPFC_SBUF_XBUSY 0x1 /* SLI4 hba reported XB on WCQE cmpl */ 389 #define LPFC_SBUF_BUMP_QDEPTH 0x2 /* bumped queue depth counter */ 390 /* External DIF device IO conversions */ 391 #define LPFC_SBUF_NORMAL_DIF 0x4 /* normal mode to insert/strip */ 392 #define LPFC_SBUF_PASS_DIF 0x8 /* insert/strip mode to passthru */ 393 #define LPFC_SBUF_NOT_POSTED 0x10 /* SGL failed post to FW. */ 394 uint16_t exch_busy; /* SLI4 hba reported XB on complete WCQE */ 395 uint16_t status; /* From IOCB Word 7- ulpStatus */ 396 uint32_t result; /* From IOCB Word 4. */ 397 398 uint32_t seg_cnt; /* Number of scatter-gather segments returned by 399 * dma_map_sg. The driver needs this for calls 400 * to dma_unmap_sg. 401 */ 402 unsigned long start_time; 403 spinlock_t buf_lock; /* lock used in case of simultaneous abort */ 404 bool expedite; /* this is an expedite io_buf */ 405 406 union { 407 /* SCSI specific fields */ 408 struct { 409 struct scsi_cmnd *pCmd; 410 struct lpfc_rport_data *rdata; 411 uint32_t prot_seg_cnt; /* seg_cnt's counterpart for 412 * protection data 413 */ 414 415 /* 416 * data and dma_handle are the kernel virtual and bus 417 * address of the dma-able buffer containing the 418 * fcp_cmd, fcp_rsp and a scatter gather bde list that 419 * supports the sg_tablesize value. 420 */ 421 struct fcp_cmnd *fcp_cmnd; 422 struct fcp_rsp *fcp_rsp; 423 424 wait_queue_head_t *waitq; 425 426 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 427 /* Used to restore any changes to protection data for 428 * error injection 429 */ 430 void *prot_data_segment; 431 uint32_t prot_data; 432 uint32_t prot_data_type; 433 #define LPFC_INJERR_REFTAG 1 434 #define LPFC_INJERR_APPTAG 2 435 #define LPFC_INJERR_GUARD 3 436 #endif 437 }; 438 439 /* NVME specific fields */ 440 struct { 441 struct nvmefc_fcp_req *nvmeCmd; 442 uint16_t qidx; 443 }; 444 }; 445 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 446 uint64_t ts_cmd_start; 447 uint64_t ts_last_cmd; 448 uint64_t ts_cmd_wqput; 449 uint64_t ts_isr_cmpl; 450 uint64_t ts_data_nvme; 451 #endif 452 }; 453