1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * * 8 * This program is free software; you can redistribute it and/or * 9 * modify it under the terms of version 2 of the GNU General * 10 * Public License as published by the Free Software Foundation. * 11 * This program is distributed in the hope that it will be useful. * 12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 16 * TO BE LEGALLY INVALID. See the GNU General Public License for * 17 * more details, a copy of which can be found in the file COPYING * 18 * included with this package. * 19 *******************************************************************/ 20 21 /* forward declaration for LPFC_IOCB_t's use */ 22 struct lpfc_hba; 23 struct lpfc_vport; 24 25 /* Define the context types that SLI handles for abort and sums. */ 26 typedef enum _lpfc_ctx_cmd { 27 LPFC_CTX_LUN, 28 LPFC_CTX_TGT, 29 LPFC_CTX_HOST 30 } lpfc_ctx_cmd; 31 32 struct lpfc_cq_event { 33 struct list_head list; 34 union { 35 struct lpfc_mcqe mcqe_cmpl; 36 struct lpfc_acqe_link acqe_link; 37 struct lpfc_acqe_fip acqe_fip; 38 struct lpfc_acqe_dcbx acqe_dcbx; 39 struct lpfc_acqe_grp5 acqe_grp5; 40 struct lpfc_acqe_fc_la acqe_fc; 41 struct lpfc_acqe_sli acqe_sli; 42 struct lpfc_rcqe rcqe_cmpl; 43 struct sli4_wcqe_xri_aborted wcqe_axri; 44 struct lpfc_wcqe_complete wcqe_cmpl; 45 } cqe; 46 }; 47 48 /* This structure is used to handle IOCB requests / responses */ 49 struct lpfc_iocbq { 50 /* lpfc_iocbqs are used in double linked lists */ 51 struct list_head list; 52 struct list_head clist; 53 struct list_head dlist; 54 uint16_t iotag; /* pre-assigned IO tag */ 55 uint16_t sli4_lxritag; /* logical pre-assigned XRI. */ 56 uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ 57 struct lpfc_cq_event cq_event; 58 59 IOCB_t iocb; /* IOCB cmd */ 60 uint8_t priority; /* OAS priority */ 61 uint8_t retry; /* retry counter for IOCB cmd - if needed */ 62 uint32_t iocb_flag; 63 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 64 #define LPFC_IO_WAKE 2 /* Synchronous I/O completed */ 65 #define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */ 66 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 67 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 68 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 69 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 70 #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ 71 #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ 72 #define DSS_SECURITY_OP 0x100 /* security IO */ 73 #define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */ 74 #define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */ 75 #define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */ 76 #define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */ 77 #define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */ 78 79 #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ 80 #define LPFC_FIP_ELS_ID_SHIFT 14 81 82 #define LPFC_IO_OAS 0x10000 /* OAS FCP IO */ 83 #define LPFC_IO_FOF 0x20000 /* FOF FCP IO */ 84 #define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */ 85 86 uint32_t drvrTimeout; /* driver timeout in seconds */ 87 uint32_t fcp_wqidx; /* index to FCP work queue */ 88 struct lpfc_vport *vport;/* virtual port pointer */ 89 void *context1; /* caller context information */ 90 void *context2; /* caller context information */ 91 void *context3; /* caller context information */ 92 union { 93 wait_queue_head_t *wait_queue; 94 struct lpfc_iocbq *rsp_iocb; 95 struct lpfcMboxq *mbox; 96 struct lpfc_nodelist *ndlp; 97 struct lpfc_node_rrq *rrq; 98 } context_un; 99 100 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 101 struct lpfc_iocbq *); 102 void (*wait_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 103 struct lpfc_iocbq *); 104 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 105 struct lpfc_iocbq *); 106 }; 107 108 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 109 110 #define IOCB_SUCCESS 0 111 #define IOCB_BUSY 1 112 #define IOCB_ERROR 2 113 #define IOCB_TIMEDOUT 3 114 115 #define LPFC_MBX_WAKE 1 116 #define LPFC_MBX_IMED_UNREG 2 117 118 typedef struct lpfcMboxq { 119 /* MBOXQs are used in single linked lists */ 120 struct list_head list; /* ptr to next mailbox command */ 121 union { 122 MAILBOX_t mb; /* Mailbox cmd */ 123 struct lpfc_mqe mqe; 124 } u; 125 struct lpfc_vport *vport;/* virtual port pointer */ 126 void *context1; /* caller context information */ 127 void *context2; /* caller context information */ 128 129 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 130 uint8_t mbox_flag; 131 uint16_t in_ext_byte_len; 132 uint16_t out_ext_byte_len; 133 uint8_t mbox_offset_word; 134 struct lpfc_mcqe mcqe; 135 struct lpfc_mbx_nembed_sge_virt *sge_array; 136 } LPFC_MBOXQ_t; 137 138 #define MBX_POLL 1 /* poll mailbox till command done, then 139 return */ 140 #define MBX_NOWAIT 2 /* issue command then return immediately */ 141 142 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 143 ring */ 144 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 145 For SLI4, an additional ring for each 146 FCP WQ will be allocated. */ 147 148 struct lpfc_sli_ring; 149 150 struct lpfc_sli_ring_mask { 151 uint8_t profile; /* profile associated with ring */ 152 uint8_t rctl; /* rctl / type pair configured for ring */ 153 uint8_t type; /* rctl / type pair configured for ring */ 154 uint8_t rsvd; 155 /* rcv'd unsol event */ 156 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 157 struct lpfc_sli_ring *, 158 struct lpfc_iocbq *); 159 }; 160 161 162 /* Structure used to hold SLI statistical counters and info */ 163 struct lpfc_sli_ring_stat { 164 uint64_t iocb_event; /* IOCB event counters */ 165 uint64_t iocb_cmd; /* IOCB cmd issued */ 166 uint64_t iocb_rsp; /* IOCB rsp received */ 167 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 168 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 169 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 170 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 171 }; 172 173 struct lpfc_sli3_ring { 174 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 175 uint32_t next_cmdidx; /* next_cmd index */ 176 uint32_t rspidx; /* current index in response ring */ 177 uint32_t cmdidx; /* current index in command ring */ 178 uint16_t numCiocb; /* number of command iocb's per ring */ 179 uint16_t numRiocb; /* number of rsp iocb's per ring */ 180 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 181 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 182 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 183 uint32_t *rspringaddr; /* virtual address for rsp rings */ 184 }; 185 186 struct lpfc_sli4_ring { 187 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 188 }; 189 190 191 /* Structure used to hold SLI ring information */ 192 struct lpfc_sli_ring { 193 uint16_t flag; /* ring flags */ 194 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 195 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 196 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 197 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 198 199 uint8_t rsvd; 200 uint8_t ringno; /* ring number */ 201 202 spinlock_t ring_lock; /* lock for issuing commands */ 203 204 uint32_t fast_iotag; /* max fastlookup based iotag */ 205 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 206 uint32_t iotag_max; /* max iotag value to use */ 207 struct list_head txq; 208 uint16_t txq_cnt; /* current length of queue */ 209 uint16_t txq_max; /* max length */ 210 struct list_head txcmplq; 211 uint16_t txcmplq_cnt; /* current length of queue */ 212 uint16_t txcmplq_max; /* max length */ 213 uint32_t missbufcnt; /* keep track of buffers to post */ 214 struct list_head postbufq; 215 uint16_t postbufq_cnt; /* current length of queue */ 216 uint16_t postbufq_max; /* max length */ 217 struct list_head iocb_continueq; 218 uint16_t iocb_continueq_cnt; /* current length of queue */ 219 uint16_t iocb_continueq_max; /* max length */ 220 struct list_head iocb_continue_saveq; 221 222 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 223 uint32_t num_mask; /* number of mask entries in prt array */ 224 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 225 struct lpfc_sli_ring *, struct lpfc_iocbq *); 226 227 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 228 229 /* cmd ring available */ 230 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 231 struct lpfc_sli_ring *); 232 union { 233 struct lpfc_sli3_ring sli3; 234 struct lpfc_sli4_ring sli4; 235 } sli; 236 }; 237 238 /* Structure used for configuring rings to a specific profile or rctl / type */ 239 struct lpfc_hbq_init { 240 uint32_t rn; /* Receive buffer notification */ 241 uint32_t entry_count; /* max # of entries in HBQ */ 242 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 243 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 244 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 245 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 246 * ring2=b0100 */ 247 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 248 249 uint32_t seqlenoff; 250 uint32_t maxlen; 251 uint32_t seqlenbcnt; 252 uint32_t cmdcodeoff; 253 uint32_t cmdmatch[8]; 254 uint32_t mask_count; /* number of mask entries in prt array */ 255 struct hbq_mask hbqMasks[6]; 256 257 /* Non-config rings fields to keep track of buffer allocations */ 258 uint32_t buffer_count; /* number of buffers allocated */ 259 uint32_t init_count; /* number to allocate when initialized */ 260 uint32_t add_count; /* number to allocate when starved */ 261 } ; 262 263 /* Structure used to hold SLI statistical counters and info */ 264 struct lpfc_sli_stat { 265 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 266 uint64_t mbox_cmd; /* Mailbox commands issued */ 267 uint64_t sli_intr; /* Count of Host Attention interrupts */ 268 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 269 uint64_t sli_ips; /* Host Attention interrupts per sec */ 270 uint32_t err_attn_event; /* Error Attn event counters */ 271 uint32_t link_event; /* Link event counters */ 272 uint32_t mbox_event; /* Mailbox event counters */ 273 uint32_t mbox_busy; /* Mailbox cmd busy */ 274 }; 275 276 /* Structure to store link status values when port stats are reset */ 277 struct lpfc_lnk_stat { 278 uint32_t link_failure_count; 279 uint32_t loss_of_sync_count; 280 uint32_t loss_of_signal_count; 281 uint32_t prim_seq_protocol_err_count; 282 uint32_t invalid_tx_word_count; 283 uint32_t invalid_crc_count; 284 uint32_t error_frames; 285 uint32_t link_events; 286 }; 287 288 /* Structure used to hold SLI information */ 289 struct lpfc_sli { 290 uint32_t num_rings; 291 uint32_t sli_flag; 292 293 /* Additional sli_flags */ 294 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 295 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 296 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 297 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 298 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 299 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 300 301 struct lpfc_sli_ring *ring; 302 int fcp_ring; /* ring used for FCP initiator commands */ 303 int next_ring; 304 305 int extra_ring; /* extra ring used for other protocols */ 306 307 struct lpfc_sli_stat slistat; /* SLI statistical info */ 308 struct list_head mboxq; 309 uint16_t mboxq_cnt; /* current length of queue */ 310 uint16_t mboxq_max; /* max length */ 311 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 312 struct list_head mboxq_cmpl; 313 314 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 315 cmd */ 316 317 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 318 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 319 size_t iocbq_lookup_len; /* current lengs of the array */ 320 uint16_t last_iotag; /* last allocated IOTAG */ 321 unsigned long stats_start; /* in seconds */ 322 struct lpfc_lnk_stat lnk_stat_offsets; 323 }; 324 325 /* Timeout for normal outstanding mbox command (Seconds) */ 326 #define LPFC_MBOX_TMO 30 327 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 328 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 329 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 330 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 331 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 332 #define LPFC_MBOX_TMO_FLASH_CMD 300 333