1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2018 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 /* forward declaration for LPFC_IOCB_t's use */ 24 struct lpfc_hba; 25 struct lpfc_vport; 26 27 /* Define the context types that SLI handles for abort and sums. */ 28 typedef enum _lpfc_ctx_cmd { 29 LPFC_CTX_LUN, 30 LPFC_CTX_TGT, 31 LPFC_CTX_HOST 32 } lpfc_ctx_cmd; 33 34 struct lpfc_cq_event { 35 struct list_head list; 36 union { 37 struct lpfc_mcqe mcqe_cmpl; 38 struct lpfc_acqe_link acqe_link; 39 struct lpfc_acqe_fip acqe_fip; 40 struct lpfc_acqe_dcbx acqe_dcbx; 41 struct lpfc_acqe_grp5 acqe_grp5; 42 struct lpfc_acqe_fc_la acqe_fc; 43 struct lpfc_acqe_sli acqe_sli; 44 struct lpfc_rcqe rcqe_cmpl; 45 struct sli4_wcqe_xri_aborted wcqe_axri; 46 struct lpfc_wcqe_complete wcqe_cmpl; 47 } cqe; 48 }; 49 50 /* This structure is used to handle IOCB requests / responses */ 51 struct lpfc_iocbq { 52 /* lpfc_iocbqs are used in double linked lists */ 53 struct list_head list; 54 struct list_head clist; 55 struct list_head dlist; 56 uint16_t iotag; /* pre-assigned IO tag */ 57 uint16_t sli4_lxritag; /* logical pre-assigned XRI. */ 58 uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ 59 uint16_t hba_wqidx; /* index to HBA work queue */ 60 struct lpfc_cq_event cq_event; 61 struct lpfc_wcqe_complete wcqe_cmpl; /* WQE cmpl */ 62 uint64_t isr_timestamp; 63 64 union lpfc_wqe128 wqe; /* SLI-4 */ 65 IOCB_t iocb; /* SLI-3 */ 66 67 uint8_t rsvd2; 68 uint8_t priority; /* OAS priority */ 69 uint8_t retry; /* retry counter for IOCB cmd - if needed */ 70 uint32_t iocb_flag; 71 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 72 #define LPFC_IO_WAKE 2 /* Synchronous I/O completed */ 73 #define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */ 74 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 75 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 76 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 77 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 78 #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ 79 #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ 80 #define DSS_SECURITY_OP 0x100 /* security IO */ 81 #define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */ 82 #define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */ 83 #define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */ 84 #define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */ 85 #define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */ 86 87 #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ 88 #define LPFC_FIP_ELS_ID_SHIFT 14 89 90 #define LPFC_IO_OAS 0x10000 /* OAS FCP IO */ 91 #define LPFC_IO_FOF 0x20000 /* FOF FCP IO */ 92 #define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */ 93 #define LPFC_PRLI_NVME_REQ 0x80000 /* This is an NVME PRLI. */ 94 #define LPFC_PRLI_FCP_REQ 0x100000 /* This is an NVME PRLI. */ 95 #define LPFC_IO_NVME 0x200000 /* NVME FCP command */ 96 #define LPFC_IO_NVME_LS 0x400000 /* NVME LS command */ 97 #define LPFC_IO_NVMET 0x800000 /* NVMET command */ 98 99 uint32_t drvrTimeout; /* driver timeout in seconds */ 100 struct lpfc_vport *vport;/* virtual port pointer */ 101 void *context1; /* caller context information */ 102 void *context2; /* caller context information */ 103 void *context3; /* caller context information */ 104 union { 105 wait_queue_head_t *wait_queue; 106 struct lpfc_iocbq *rsp_iocb; 107 struct lpfcMboxq *mbox; 108 struct lpfc_nodelist *ndlp; 109 struct lpfc_node_rrq *rrq; 110 } context_un; 111 112 void (*fabric_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 113 struct lpfc_iocbq *); 114 void (*wait_iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 115 struct lpfc_iocbq *); 116 void (*iocb_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 117 struct lpfc_iocbq *); 118 void (*wqe_cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 119 struct lpfc_wcqe_complete *); 120 }; 121 122 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 123 124 #define IOCB_SUCCESS 0 125 #define IOCB_BUSY 1 126 #define IOCB_ERROR 2 127 #define IOCB_TIMEDOUT 3 128 129 #define SLI_WQE_RET_WQE 1 /* Return WQE if cmd ring full */ 130 131 #define WQE_SUCCESS 0 132 #define WQE_BUSY 1 133 #define WQE_ERROR 2 134 #define WQE_TIMEDOUT 3 135 #define WQE_ABORTED 4 136 137 #define LPFC_MBX_WAKE 1 138 #define LPFC_MBX_IMED_UNREG 2 139 140 typedef struct lpfcMboxq { 141 /* MBOXQs are used in single linked lists */ 142 struct list_head list; /* ptr to next mailbox command */ 143 union { 144 MAILBOX_t mb; /* Mailbox cmd */ 145 struct lpfc_mqe mqe; 146 } u; 147 struct lpfc_vport *vport;/* virtual port pointer */ 148 void *context1; /* caller context information */ 149 void *context2; /* caller context information */ 150 void *context3; 151 152 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 153 uint8_t mbox_flag; 154 uint16_t in_ext_byte_len; 155 uint16_t out_ext_byte_len; 156 uint8_t mbox_offset_word; 157 struct lpfc_mcqe mcqe; 158 struct lpfc_mbx_nembed_sge_virt *sge_array; 159 } LPFC_MBOXQ_t; 160 161 #define MBX_POLL 1 /* poll mailbox till command done, then 162 return */ 163 #define MBX_NOWAIT 2 /* issue command then return immediately */ 164 165 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 166 ring */ 167 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 168 For SLI4, an additional ring for each 169 FCP WQ will be allocated. */ 170 171 struct lpfc_sli_ring; 172 173 struct lpfc_sli_ring_mask { 174 uint8_t profile; /* profile associated with ring */ 175 uint8_t rctl; /* rctl / type pair configured for ring */ 176 uint8_t type; /* rctl / type pair configured for ring */ 177 uint8_t rsvd; 178 /* rcv'd unsol event */ 179 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 180 struct lpfc_sli_ring *, 181 struct lpfc_iocbq *); 182 }; 183 184 185 /* Structure used to hold SLI statistical counters and info */ 186 struct lpfc_sli_ring_stat { 187 uint64_t iocb_event; /* IOCB event counters */ 188 uint64_t iocb_cmd; /* IOCB cmd issued */ 189 uint64_t iocb_rsp; /* IOCB rsp received */ 190 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 191 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 192 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 193 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 194 }; 195 196 struct lpfc_sli3_ring { 197 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 198 uint32_t next_cmdidx; /* next_cmd index */ 199 uint32_t rspidx; /* current index in response ring */ 200 uint32_t cmdidx; /* current index in command ring */ 201 uint16_t numCiocb; /* number of command iocb's per ring */ 202 uint16_t numRiocb; /* number of rsp iocb's per ring */ 203 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 204 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 205 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 206 uint32_t *rspringaddr; /* virtual address for rsp rings */ 207 }; 208 209 struct lpfc_sli4_ring { 210 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 211 }; 212 213 214 /* Structure used to hold SLI ring information */ 215 struct lpfc_sli_ring { 216 uint16_t flag; /* ring flags */ 217 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 218 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 219 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 220 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 221 222 uint8_t rsvd; 223 uint8_t ringno; /* ring number */ 224 225 spinlock_t ring_lock; /* lock for issuing commands */ 226 227 uint32_t fast_iotag; /* max fastlookup based iotag */ 228 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 229 uint32_t iotag_max; /* max iotag value to use */ 230 struct list_head txq; 231 uint16_t txq_cnt; /* current length of queue */ 232 uint16_t txq_max; /* max length */ 233 struct list_head txcmplq; 234 uint16_t txcmplq_cnt; /* current length of queue */ 235 uint16_t txcmplq_max; /* max length */ 236 uint32_t missbufcnt; /* keep track of buffers to post */ 237 struct list_head postbufq; 238 uint16_t postbufq_cnt; /* current length of queue */ 239 uint16_t postbufq_max; /* max length */ 240 struct list_head iocb_continueq; 241 uint16_t iocb_continueq_cnt; /* current length of queue */ 242 uint16_t iocb_continueq_max; /* max length */ 243 struct list_head iocb_continue_saveq; 244 245 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 246 uint32_t num_mask; /* number of mask entries in prt array */ 247 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 248 struct lpfc_sli_ring *, struct lpfc_iocbq *); 249 250 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 251 252 /* cmd ring available */ 253 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 254 struct lpfc_sli_ring *); 255 union { 256 struct lpfc_sli3_ring sli3; 257 struct lpfc_sli4_ring sli4; 258 } sli; 259 }; 260 261 /* Structure used for configuring rings to a specific profile or rctl / type */ 262 struct lpfc_hbq_init { 263 uint32_t rn; /* Receive buffer notification */ 264 uint32_t entry_count; /* max # of entries in HBQ */ 265 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 266 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 267 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 268 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 269 * ring2=b0100 */ 270 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 271 272 uint32_t seqlenoff; 273 uint32_t maxlen; 274 uint32_t seqlenbcnt; 275 uint32_t cmdcodeoff; 276 uint32_t cmdmatch[8]; 277 uint32_t mask_count; /* number of mask entries in prt array */ 278 struct hbq_mask hbqMasks[6]; 279 280 /* Non-config rings fields to keep track of buffer allocations */ 281 uint32_t buffer_count; /* number of buffers allocated */ 282 uint32_t init_count; /* number to allocate when initialized */ 283 uint32_t add_count; /* number to allocate when starved */ 284 } ; 285 286 /* Structure used to hold SLI statistical counters and info */ 287 struct lpfc_sli_stat { 288 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 289 uint64_t mbox_cmd; /* Mailbox commands issued */ 290 uint64_t sli_intr; /* Count of Host Attention interrupts */ 291 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 292 uint64_t sli_ips; /* Host Attention interrupts per sec */ 293 uint32_t err_attn_event; /* Error Attn event counters */ 294 uint32_t link_event; /* Link event counters */ 295 uint32_t mbox_event; /* Mailbox event counters */ 296 uint32_t mbox_busy; /* Mailbox cmd busy */ 297 }; 298 299 /* Structure to store link status values when port stats are reset */ 300 struct lpfc_lnk_stat { 301 uint32_t link_failure_count; 302 uint32_t loss_of_sync_count; 303 uint32_t loss_of_signal_count; 304 uint32_t prim_seq_protocol_err_count; 305 uint32_t invalid_tx_word_count; 306 uint32_t invalid_crc_count; 307 uint32_t error_frames; 308 uint32_t link_events; 309 }; 310 311 /* Structure used to hold SLI information */ 312 struct lpfc_sli { 313 uint32_t num_rings; 314 uint32_t sli_flag; 315 316 /* Additional sli_flags */ 317 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 318 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 319 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 320 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 321 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 322 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 323 #define LPFC_SLI_SUPPRESS_RSP 0x4000 /* Suppress RSP feature is supported */ 324 #define LPFC_SLI_USE_EQDR 0x8000 /* EQ Delay Register is supported */ 325 326 struct lpfc_sli_ring *sli3_ring; 327 328 struct lpfc_sli_stat slistat; /* SLI statistical info */ 329 struct list_head mboxq; 330 uint16_t mboxq_cnt; /* current length of queue */ 331 uint16_t mboxq_max; /* max length */ 332 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 333 struct list_head mboxq_cmpl; 334 335 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 336 cmd */ 337 338 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 339 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 340 size_t iocbq_lookup_len; /* current lengs of the array */ 341 uint16_t last_iotag; /* last allocated IOTAG */ 342 time64_t stats_start; /* in seconds */ 343 struct lpfc_lnk_stat lnk_stat_offsets; 344 }; 345 346 /* Timeout for normal outstanding mbox command (Seconds) */ 347 #define LPFC_MBOX_TMO 30 348 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 349 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 350 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 351 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 352 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 353 #define LPFC_MBOX_TMO_FLASH_CMD 300 354