1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2015 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 */ 22struct lpfc_hba; 23struct lpfc_vport; 24 25/* Define the context types that SLI handles for abort and sums. */ 26typedef enum _lpfc_ctx_cmd { 27 LPFC_CTX_LUN, 28 LPFC_CTX_TGT, 29 LPFC_CTX_HOST 30} lpfc_ctx_cmd; 31 32struct 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 */ 49struct 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#define LPFC_IO_LOOPBACK 0x40000 /* Loopback IO */ 84 85 uint32_t drvrTimeout; /* driver timeout in seconds */ 86 uint32_t fcp_wqidx; /* index to FCP work queue */ 87 struct lpfc_vport *vport;/* virtual port pointer */ 88 void *context1; /* caller context information */ 89 void *context2; /* caller context information */ 90 void *context3; /* caller context information */ 91 union { 92 wait_queue_head_t *wait_queue; 93 struct lpfc_iocbq *rsp_iocb; 94 struct lpfcMboxq *mbox; 95 struct lpfc_nodelist *ndlp; 96 struct lpfc_node_rrq *rrq; 97 } context_un; 98 99 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 100 struct lpfc_iocbq *); 101 void (*wait_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 102 struct lpfc_iocbq *); 103 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 104 struct lpfc_iocbq *); 105}; 106 107#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 108 109#define IOCB_SUCCESS 0 110#define IOCB_BUSY 1 111#define IOCB_ERROR 2 112#define IOCB_TIMEDOUT 3 113 114#define LPFC_MBX_WAKE 1 115#define LPFC_MBX_IMED_UNREG 2 116 117typedef struct lpfcMboxq { 118 /* MBOXQs are used in single linked lists */ 119 struct list_head list; /* ptr to next mailbox command */ 120 union { 121 MAILBOX_t mb; /* Mailbox cmd */ 122 struct lpfc_mqe mqe; 123 } u; 124 struct lpfc_vport *vport;/* virtual port pointer */ 125 void *context1; /* caller context information */ 126 void *context2; /* caller context information */ 127 128 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 129 uint8_t mbox_flag; 130 uint16_t in_ext_byte_len; 131 uint16_t out_ext_byte_len; 132 uint8_t mbox_offset_word; 133 struct lpfc_mcqe mcqe; 134 struct lpfc_mbx_nembed_sge_virt *sge_array; 135} LPFC_MBOXQ_t; 136 137#define MBX_POLL 1 /* poll mailbox till command done, then 138 return */ 139#define MBX_NOWAIT 2 /* issue command then return immediately */ 140 141#define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 142 ring */ 143#define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 144 For SLI4, an additional ring for each 145 FCP WQ will be allocated. */ 146 147struct lpfc_sli_ring; 148 149struct lpfc_sli_ring_mask { 150 uint8_t profile; /* profile associated with ring */ 151 uint8_t rctl; /* rctl / type pair configured for ring */ 152 uint8_t type; /* rctl / type pair configured for ring */ 153 uint8_t rsvd; 154 /* rcv'd unsol event */ 155 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 156 struct lpfc_sli_ring *, 157 struct lpfc_iocbq *); 158}; 159 160 161/* Structure used to hold SLI statistical counters and info */ 162struct lpfc_sli_ring_stat { 163 uint64_t iocb_event; /* IOCB event counters */ 164 uint64_t iocb_cmd; /* IOCB cmd issued */ 165 uint64_t iocb_rsp; /* IOCB rsp received */ 166 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 167 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 168 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 169 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 170}; 171 172struct lpfc_sli3_ring { 173 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 174 uint32_t next_cmdidx; /* next_cmd index */ 175 uint32_t rspidx; /* current index in response ring */ 176 uint32_t cmdidx; /* current index in command ring */ 177 uint16_t numCiocb; /* number of command iocb's per ring */ 178 uint16_t numRiocb; /* number of rsp iocb's per ring */ 179 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 180 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 181 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 182 uint32_t *rspringaddr; /* virtual address for rsp rings */ 183}; 184 185struct lpfc_sli4_ring { 186 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 187}; 188 189 190/* Structure used to hold SLI ring information */ 191struct lpfc_sli_ring { 192 uint16_t flag; /* ring flags */ 193#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 194#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 195#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 196 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 197 198 uint8_t rsvd; 199 uint8_t ringno; /* ring number */ 200 201 spinlock_t ring_lock; /* lock for issuing commands */ 202 203 uint32_t fast_iotag; /* max fastlookup based iotag */ 204 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 205 uint32_t iotag_max; /* max iotag value to use */ 206 struct list_head txq; 207 uint16_t txq_cnt; /* current length of queue */ 208 uint16_t txq_max; /* max length */ 209 struct list_head txcmplq; 210 uint16_t txcmplq_cnt; /* current length of queue */ 211 uint16_t txcmplq_max; /* max length */ 212 uint32_t missbufcnt; /* keep track of buffers to post */ 213 struct list_head postbufq; 214 uint16_t postbufq_cnt; /* current length of queue */ 215 uint16_t postbufq_max; /* max length */ 216 struct list_head iocb_continueq; 217 uint16_t iocb_continueq_cnt; /* current length of queue */ 218 uint16_t iocb_continueq_max; /* max length */ 219 struct list_head iocb_continue_saveq; 220 221 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 222 uint32_t num_mask; /* number of mask entries in prt array */ 223 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 224 struct lpfc_sli_ring *, struct lpfc_iocbq *); 225 226 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 227 228 /* cmd ring available */ 229 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 230 struct lpfc_sli_ring *); 231 union { 232 struct lpfc_sli3_ring sli3; 233 struct lpfc_sli4_ring sli4; 234 } sli; 235}; 236 237/* Structure used for configuring rings to a specific profile or rctl / type */ 238struct lpfc_hbq_init { 239 uint32_t rn; /* Receive buffer notification */ 240 uint32_t entry_count; /* max # of entries in HBQ */ 241 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 242 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 243 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 244 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 245 * ring2=b0100 */ 246 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 247 248 uint32_t seqlenoff; 249 uint32_t maxlen; 250 uint32_t seqlenbcnt; 251 uint32_t cmdcodeoff; 252 uint32_t cmdmatch[8]; 253 uint32_t mask_count; /* number of mask entries in prt array */ 254 struct hbq_mask hbqMasks[6]; 255 256 /* Non-config rings fields to keep track of buffer allocations */ 257 uint32_t buffer_count; /* number of buffers allocated */ 258 uint32_t init_count; /* number to allocate when initialized */ 259 uint32_t add_count; /* number to allocate when starved */ 260} ; 261 262/* Structure used to hold SLI statistical counters and info */ 263struct lpfc_sli_stat { 264 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 265 uint64_t mbox_cmd; /* Mailbox commands issued */ 266 uint64_t sli_intr; /* Count of Host Attention interrupts */ 267 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 268 uint64_t sli_ips; /* Host Attention interrupts per sec */ 269 uint32_t err_attn_event; /* Error Attn event counters */ 270 uint32_t link_event; /* Link event counters */ 271 uint32_t mbox_event; /* Mailbox event counters */ 272 uint32_t mbox_busy; /* Mailbox cmd busy */ 273}; 274 275/* Structure to store link status values when port stats are reset */ 276struct lpfc_lnk_stat { 277 uint32_t link_failure_count; 278 uint32_t loss_of_sync_count; 279 uint32_t loss_of_signal_count; 280 uint32_t prim_seq_protocol_err_count; 281 uint32_t invalid_tx_word_count; 282 uint32_t invalid_crc_count; 283 uint32_t error_frames; 284 uint32_t link_events; 285}; 286 287/* Structure used to hold SLI information */ 288struct lpfc_sli { 289 uint32_t num_rings; 290 uint32_t sli_flag; 291 292 /* Additional sli_flags */ 293#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 294#define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 295#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 296#define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 297#define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 298#define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 299 300 struct lpfc_sli_ring *ring; 301 int fcp_ring; /* ring used for FCP initiator commands */ 302 int next_ring; 303 304 int extra_ring; /* extra ring used for other protocols */ 305 306 struct lpfc_sli_stat slistat; /* SLI statistical info */ 307 struct list_head mboxq; 308 uint16_t mboxq_cnt; /* current length of queue */ 309 uint16_t mboxq_max; /* max length */ 310 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 311 struct list_head mboxq_cmpl; 312 313 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 314 cmd */ 315 316#define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 317 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 318 size_t iocbq_lookup_len; /* current lengs of the array */ 319 uint16_t last_iotag; /* last allocated IOTAG */ 320 unsigned long stats_start; /* in seconds */ 321 struct lpfc_lnk_stat lnk_stat_offsets; 322}; 323 324/* Timeout for normal outstanding mbox command (Seconds) */ 325#define LPFC_MBOX_TMO 30 326/* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 327#define LPFC_MBOX_SLI4_CONFIG_TMO 60 328/* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 329#define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 330/* Timeout for other flash-based outstanding mbox command (Seconds) */ 331#define LPFC_MBOX_TMO_FLASH_CMD 300 332