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