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