1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2007 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 uint16_t iocb_flag; 62 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 63 #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */ 64 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 65 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 66 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 67 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 68 #define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ 69 #define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ 70 #define DSS_SECURITY_OP 0x100 /* security IO */ 71 #define LPFC_IO_ON_TXCMPLQ 0x200 /* The IO is still on the TXCMPLQ */ 72 #define LPFC_IO_DIF_PASS 0x400 /* T10 DIF IO pass-thru prot */ 73 #define LPFC_IO_DIF_STRIP 0x800 /* T10 DIF IO strip prot */ 74 #define LPFC_IO_DIF_INSERT 0x1000 /* T10 DIF IO insert prot */ 75 76 #define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ 77 #define LPFC_FIP_ELS_ID_SHIFT 14 78 79 uint8_t rsvd2; 80 uint32_t drvrTimeout; /* driver timeout in seconds */ 81 uint32_t fcp_wqidx; /* index to FCP work queue */ 82 struct lpfc_vport *vport;/* virtual port pointer */ 83 void *context1; /* caller context information */ 84 void *context2; /* caller context information */ 85 void *context3; /* caller context information */ 86 union { 87 wait_queue_head_t *wait_queue; 88 struct lpfc_iocbq *rsp_iocb; 89 struct lpfcMboxq *mbox; 90 struct lpfc_nodelist *ndlp; 91 struct lpfc_node_rrq *rrq; 92 } context_un; 93 94 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 95 struct lpfc_iocbq *); 96 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 97 struct lpfc_iocbq *); 98 }; 99 100 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 101 102 #define IOCB_SUCCESS 0 103 #define IOCB_BUSY 1 104 #define IOCB_ERROR 2 105 #define IOCB_TIMEDOUT 3 106 107 #define LPFC_MBX_WAKE 1 108 #define LPFC_MBX_IMED_UNREG 2 109 110 typedef struct lpfcMboxq { 111 /* MBOXQs are used in single linked lists */ 112 struct list_head list; /* ptr to next mailbox command */ 113 union { 114 MAILBOX_t mb; /* Mailbox cmd */ 115 struct lpfc_mqe mqe; 116 } u; 117 struct lpfc_vport *vport;/* virtual port pointer */ 118 void *context1; /* caller context information */ 119 void *context2; /* caller context information */ 120 121 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 122 uint8_t mbox_flag; 123 uint16_t in_ext_byte_len; 124 uint16_t out_ext_byte_len; 125 uint8_t mbox_offset_word; 126 struct lpfc_mcqe mcqe; 127 struct lpfc_mbx_nembed_sge_virt *sge_array; 128 } LPFC_MBOXQ_t; 129 130 #define MBX_POLL 1 /* poll mailbox till command done, then 131 return */ 132 #define MBX_NOWAIT 2 /* issue command then return immediately */ 133 134 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 135 ring */ 136 #define LPFC_SLI3_MAX_RING 4 /* Max num of SLI3 rings used by driver. 137 For SLI4, an additional ring for each 138 FCP WQ will be allocated. */ 139 140 struct lpfc_sli_ring; 141 142 struct lpfc_sli_ring_mask { 143 uint8_t profile; /* profile associated with ring */ 144 uint8_t rctl; /* rctl / type pair configured for ring */ 145 uint8_t type; /* rctl / type pair configured for ring */ 146 uint8_t rsvd; 147 /* rcv'd unsol event */ 148 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 149 struct lpfc_sli_ring *, 150 struct lpfc_iocbq *); 151 }; 152 153 154 /* Structure used to hold SLI statistical counters and info */ 155 struct lpfc_sli_ring_stat { 156 uint64_t iocb_event; /* IOCB event counters */ 157 uint64_t iocb_cmd; /* IOCB cmd issued */ 158 uint64_t iocb_rsp; /* IOCB rsp received */ 159 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 160 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 161 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 162 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 163 }; 164 165 struct lpfc_sli3_ring { 166 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 167 uint32_t next_cmdidx; /* next_cmd index */ 168 uint32_t rspidx; /* current index in response ring */ 169 uint32_t cmdidx; /* current index in command ring */ 170 uint16_t numCiocb; /* number of command iocb's per ring */ 171 uint16_t numRiocb; /* number of rsp iocb's per ring */ 172 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 173 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 174 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 175 uint32_t *rspringaddr; /* virtual address for rsp rings */ 176 }; 177 178 struct lpfc_sli4_ring { 179 struct lpfc_queue *wqp; /* Pointer to associated WQ */ 180 }; 181 182 183 /* Structure used to hold SLI ring information */ 184 struct lpfc_sli_ring { 185 uint16_t flag; /* ring flags */ 186 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 187 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 188 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 189 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 190 191 uint8_t rsvd; 192 uint8_t ringno; /* ring number */ 193 194 spinlock_t ring_lock; /* lock for issuing commands */ 195 196 uint32_t fast_iotag; /* max fastlookup based iotag */ 197 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 198 uint32_t iotag_max; /* max iotag value to use */ 199 struct list_head txq; 200 uint16_t txq_cnt; /* current length of queue */ 201 uint16_t txq_max; /* max length */ 202 struct list_head txcmplq; 203 uint16_t txcmplq_cnt; /* current length of queue */ 204 uint16_t txcmplq_max; /* max length */ 205 uint32_t missbufcnt; /* keep track of buffers to post */ 206 struct list_head postbufq; 207 uint16_t postbufq_cnt; /* current length of queue */ 208 uint16_t postbufq_max; /* max length */ 209 struct list_head iocb_continueq; 210 uint16_t iocb_continueq_cnt; /* current length of queue */ 211 uint16_t iocb_continueq_max; /* max length */ 212 struct list_head iocb_continue_saveq; 213 214 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 215 uint32_t num_mask; /* number of mask entries in prt array */ 216 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 217 struct lpfc_sli_ring *, struct lpfc_iocbq *); 218 219 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 220 221 /* cmd ring available */ 222 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 223 struct lpfc_sli_ring *); 224 union { 225 struct lpfc_sli3_ring sli3; 226 struct lpfc_sli4_ring sli4; 227 } sli; 228 }; 229 230 /* Structure used for configuring rings to a specific profile or rctl / type */ 231 struct lpfc_hbq_init { 232 uint32_t rn; /* Receive buffer notification */ 233 uint32_t entry_count; /* max # of entries in HBQ */ 234 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 235 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 236 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 237 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 238 * ring2=b0100 */ 239 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 240 241 uint32_t seqlenoff; 242 uint32_t maxlen; 243 uint32_t seqlenbcnt; 244 uint32_t cmdcodeoff; 245 uint32_t cmdmatch[8]; 246 uint32_t mask_count; /* number of mask entries in prt array */ 247 struct hbq_mask hbqMasks[6]; 248 249 /* Non-config rings fields to keep track of buffer allocations */ 250 uint32_t buffer_count; /* number of buffers allocated */ 251 uint32_t init_count; /* number to allocate when initialized */ 252 uint32_t add_count; /* number to allocate when starved */ 253 } ; 254 255 /* Structure used to hold SLI statistical counters and info */ 256 struct lpfc_sli_stat { 257 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 258 uint64_t mbox_cmd; /* Mailbox commands issued */ 259 uint64_t sli_intr; /* Count of Host Attention interrupts */ 260 uint64_t sli_prev_intr; /* Previous cnt of Host Attention interrupts */ 261 uint64_t sli_ips; /* Host Attention interrupts per sec */ 262 uint32_t err_attn_event; /* Error Attn event counters */ 263 uint32_t link_event; /* Link event counters */ 264 uint32_t mbox_event; /* Mailbox event counters */ 265 uint32_t mbox_busy; /* Mailbox cmd busy */ 266 }; 267 268 /* Structure to store link status values when port stats are reset */ 269 struct lpfc_lnk_stat { 270 uint32_t link_failure_count; 271 uint32_t loss_of_sync_count; 272 uint32_t loss_of_signal_count; 273 uint32_t prim_seq_protocol_err_count; 274 uint32_t invalid_tx_word_count; 275 uint32_t invalid_crc_count; 276 uint32_t error_frames; 277 uint32_t link_events; 278 }; 279 280 /* Structure used to hold SLI information */ 281 struct lpfc_sli { 282 uint32_t num_rings; 283 uint32_t sli_flag; 284 285 /* Additional sli_flags */ 286 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 287 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 288 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 289 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 290 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 291 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 292 293 struct lpfc_sli_ring *ring; 294 int fcp_ring; /* ring used for FCP initiator commands */ 295 int next_ring; 296 297 int extra_ring; /* extra ring used for other protocols */ 298 299 struct lpfc_sli_stat slistat; /* SLI statistical info */ 300 struct list_head mboxq; 301 uint16_t mboxq_cnt; /* current length of queue */ 302 uint16_t mboxq_max; /* max length */ 303 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 304 struct list_head mboxq_cmpl; 305 306 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 307 cmd */ 308 309 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 310 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 311 size_t iocbq_lookup_len; /* current lengs of the array */ 312 uint16_t last_iotag; /* last allocated IOTAG */ 313 unsigned long stats_start; /* in seconds */ 314 struct lpfc_lnk_stat lnk_stat_offsets; 315 }; 316 317 /* Timeout for normal outstanding mbox command (Seconds) */ 318 #define LPFC_MBOX_TMO 30 319 /* Timeout for non-flash-based outstanding sli_config mbox command (Seconds) */ 320 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 321 /* Timeout for flash-based outstanding sli_config mbox command (Seconds) */ 322 #define LPFC_MBOX_SLI4_CONFIG_EXTENDED_TMO 300 323 /* Timeout for other flash-based outstanding mbox command (Seconds) */ 324 #define LPFC_MBOX_TMO_FLASH_CMD 300 325