1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2014 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 retry; /* retry counter for IOCB cmd - if needed */ 61 uint32_t iocb_flag; 62 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 63 #define LPFC_IO_WAKE 2 /* Synchronous I/O completed */ 64 #define LPFC_IO_WAKE_TMO LPFC_IO_WAKE /* Synchronous I/O timed out */ 65 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 66 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 67 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 68 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 69 #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ 70 #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ 71 #define DSS_SECURITY_OP 0x100 /* security IO */ 72 #define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */ 73 #define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */ 74 #define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */ 75 #define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */ 76 #define LPFC_IO_CMD_OUTSTANDING 0x2000 /* timeout handler abort window */ 77 78 #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ 79 #define LPFC_FIP_ELS_ID_SHIFT 14 80 81 #define LPFC_IO_OAS 0x10000 /* OAS FCP IO */ 82 #define LPFC_IO_FOF 0x20000 /* FOF FCP IO */ 83 84 uint32_t drvrTimeout; /* driver timeout in seconds */ 85 uint32_t fcp_wqidx; /* index to FCP work queue */ 86 struct lpfc_vport *vport;/* virtual port pointer */ 87 void *context1; /* caller context information */ 88 void *context2; /* caller context information */ 89 void *context3; /* caller context information */ 90 union { 91 wait_queue_head_t *wait_queue; 92 struct lpfc_iocbq *rsp_iocb; 93 struct lpfcMboxq *mbox; 94 struct lpfc_nodelist *ndlp; 95 struct lpfc_node_rrq *rrq; 96 } context_un; 97 98 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 99 struct lpfc_iocbq *); 100 void (*wait_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 101 struct lpfc_iocbq *); 102 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 103 struct lpfc_iocbq *); 104 }; 105 106 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 107 108 #define IOCB_SUCCESS 0 109 #define IOCB_BUSY 1 110 #define IOCB_ERROR 2 111 #define IOCB_TIMEDOUT 3 112 113 #define LPFC_MBX_WAKE 1 114 #define LPFC_MBX_IMED_UNREG 2 115 116 typedef struct lpfcMboxq { 117 /* MBOXQs are used in single linked lists */ 118 struct list_head list; /* ptr to next mailbox command */ 119 union { 120 MAILBOX_t mb; /* Mailbox cmd */ 121 struct lpfc_mqe mqe; 122 } u; 123 struct lpfc_vport *vport;/* virtual port pointer */ 124 void *context1; /* caller context information */ 125 void *context2; /* caller context information */ 126 127 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 128 uint8_t mbox_flag; 129 uint16_t in_ext_byte_len; 130 uint16_t out_ext_byte_len; 131 uint8_t mbox_offset_word; 132 struct lpfc_mcqe mcqe; 133 struct lpfc_mbx_nembed_sge_virt *sge_array; 134 } LPFC_MBOXQ_t; 135 136 #define MBX_POLL 1 /* poll mailbox till command done, then 137 return */ 138 #define MBX_NOWAIT 2 /* issue command then return immediately */ 139 140 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 141 ring */ 142 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 143 For SLI4, an additional ring for each 144 FCP WQ will be allocated. */ 145 146 struct lpfc_sli_ring; 147 148 struct lpfc_sli_ring_mask { 149 uint8_t profile; /* profile associated with ring */ 150 uint8_t rctl; /* rctl / type pair configured for ring */ 151 uint8_t type; /* rctl / type pair configured for ring */ 152 uint8_t rsvd; 153 /* rcv'd unsol event */ 154 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 155 struct lpfc_sli_ring *, 156 struct lpfc_iocbq *); 157 }; 158 159 160 /* Structure used to hold SLI statistical counters and info */ 161 struct lpfc_sli_ring_stat { 162 uint64_t iocb_event; /* IOCB event counters */ 163 uint64_t iocb_cmd; /* IOCB cmd issued */ 164 uint64_t iocb_rsp; /* IOCB rsp received */ 165 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 166 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 167 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 168 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 169 }; 170 171 struct lpfc_sli3_ring { 172 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 173 uint32_t next_cmdidx; /* next_cmd index */ 174 uint32_t rspidx; /* current index in response ring */ 175 uint32_t cmdidx; /* current index in command ring */ 176 uint16_t numCiocb; /* number of command iocb's per ring */ 177 uint16_t numRiocb; /* number of rsp iocb's per ring */ 178 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 179 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 180 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 181 uint32_t *rspringaddr; /* virtual address for rsp rings */ 182 }; 183 184 struct lpfc_sli4_ring { 185 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 186 }; 187 188 189 /* Structure used to hold SLI ring information */ 190 struct lpfc_sli_ring { 191 uint16_t flag; /* ring flags */ 192 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 193 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 194 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 195 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 196 197 uint8_t rsvd; 198 uint8_t ringno; /* ring number */ 199 200 spinlock_t ring_lock; /* lock for issuing commands */ 201 202 uint32_t fast_iotag; /* max fastlookup based iotag */ 203 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 204 uint32_t iotag_max; /* max iotag value to use */ 205 struct list_head txq; 206 uint16_t txq_cnt; /* current length of queue */ 207 uint16_t txq_max; /* max length */ 208 struct list_head txcmplq; 209 uint16_t txcmplq_cnt; /* current length of queue */ 210 uint16_t txcmplq_max; /* max length */ 211 uint32_t missbufcnt; /* keep track of buffers to post */ 212 struct list_head postbufq; 213 uint16_t postbufq_cnt; /* current length of queue */ 214 uint16_t postbufq_max; /* max length */ 215 struct list_head iocb_continueq; 216 uint16_t iocb_continueq_cnt; /* current length of queue */ 217 uint16_t iocb_continueq_max; /* max length */ 218 struct list_head iocb_continue_saveq; 219 220 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 221 uint32_t num_mask; /* number of mask entries in prt array */ 222 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 223 struct lpfc_sli_ring *, struct lpfc_iocbq *); 224 225 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 226 227 /* cmd ring available */ 228 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 229 struct lpfc_sli_ring *); 230 union { 231 struct lpfc_sli3_ring sli3; 232 struct lpfc_sli4_ring sli4; 233 } sli; 234 }; 235 236 /* Structure used for configuring rings to a specific profile or rctl / type */ 237 struct lpfc_hbq_init { 238 uint32_t rn; /* Receive buffer notification */ 239 uint32_t entry_count; /* max # of entries in HBQ */ 240 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 241 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 242 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 243 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 244 * ring2=b0100 */ 245 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 246 247 uint32_t seqlenoff; 248 uint32_t maxlen; 249 uint32_t seqlenbcnt; 250 uint32_t cmdcodeoff; 251 uint32_t cmdmatch[8]; 252 uint32_t mask_count; /* number of mask entries in prt array */ 253 struct hbq_mask hbqMasks[6]; 254 255 /* Non-config rings fields to keep track of buffer allocations */ 256 uint32_t buffer_count; /* number of buffers allocated */ 257 uint32_t init_count; /* number to allocate when initialized */ 258 uint32_t add_count; /* number to allocate when starved */ 259 } ; 260 261 /* Structure used to hold SLI statistical counters and info */ 262 struct lpfc_sli_stat { 263 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 264 uint64_t mbox_cmd; /* Mailbox commands issued */ 265 uint64_t sli_intr; /* Count of Host Attention interrupts */ 266 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 267 uint64_t sli_ips; /* Host Attention interrupts per sec */ 268 uint32_t err_attn_event; /* Error Attn event counters */ 269 uint32_t link_event; /* Link event counters */ 270 uint32_t mbox_event; /* Mailbox event counters */ 271 uint32_t mbox_busy; /* Mailbox cmd busy */ 272 }; 273 274 /* Structure to store link status values when port stats are reset */ 275 struct lpfc_lnk_stat { 276 uint32_t link_failure_count; 277 uint32_t loss_of_sync_count; 278 uint32_t loss_of_signal_count; 279 uint32_t prim_seq_protocol_err_count; 280 uint32_t invalid_tx_word_count; 281 uint32_t invalid_crc_count; 282 uint32_t error_frames; 283 uint32_t link_events; 284 }; 285 286 /* Structure used to hold SLI information */ 287 struct lpfc_sli { 288 uint32_t num_rings; 289 uint32_t sli_flag; 290 291 /* Additional sli_flags */ 292 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 293 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 294 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 295 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 296 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 297 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 298 299 struct lpfc_sli_ring *ring; 300 int fcp_ring; /* ring used for FCP initiator commands */ 301 int next_ring; 302 303 int extra_ring; /* extra ring used for other protocols */ 304 305 struct lpfc_sli_stat slistat; /* SLI statistical info */ 306 struct list_head mboxq; 307 uint16_t mboxq_cnt; /* current length of queue */ 308 uint16_t mboxq_max; /* max length */ 309 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 310 struct list_head mboxq_cmpl; 311 312 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 313 cmd */ 314 315 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 316 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 317 size_t iocbq_lookup_len; /* current lengs of the array */ 318 uint16_t last_iotag; /* last allocated IOTAG */ 319 unsigned long stats_start; /* in seconds */ 320 struct lpfc_lnk_stat lnk_stat_offsets; 321 }; 322 323 /* Timeout for normal outstanding mbox command (Seconds) */ 324 #define LPFC_MBOX_TMO 30 325 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 326 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 327 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 328 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 329 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 330 #define LPFC_MBOX_TMO_FLASH_CMD 300 331