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 /* This structure is used to carry the needed response IOCB states */ 33 struct lpfc_sli4_rspiocb_info { 34 uint8_t hw_status; 35 uint8_t bfield; 36 #define LPFC_XB 0x1 37 #define LPFC_PV 0x2 38 uint8_t priority; 39 uint8_t reserved; 40 }; 41 42 /* This structure is used to handle IOCB requests / responses */ 43 struct lpfc_iocbq { 44 /* lpfc_iocbqs are used in double linked lists */ 45 struct list_head list; 46 struct list_head clist; 47 uint16_t iotag; /* pre-assigned IO tag */ 48 uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ 49 50 IOCB_t iocb; /* IOCB cmd */ 51 uint8_t retry; /* retry counter for IOCB cmd - if needed */ 52 uint8_t iocb_flag; 53 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 54 #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */ 55 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 56 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 57 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 58 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 59 #define LPFC_FIP_ELS 0x40 60 61 uint8_t abort_count; 62 uint8_t rsvd2; 63 uint32_t drvrTimeout; /* driver timeout in seconds */ 64 struct lpfc_vport *vport;/* virtual port pointer */ 65 void *context1; /* caller context information */ 66 void *context2; /* caller context information */ 67 void *context3; /* caller context information */ 68 union { 69 wait_queue_head_t *wait_queue; 70 struct lpfc_iocbq *rsp_iocb; 71 struct lpfcMboxq *mbox; 72 struct lpfc_nodelist *ndlp; 73 } context_un; 74 75 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 76 struct lpfc_iocbq *); 77 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 78 struct lpfc_iocbq *); 79 struct lpfc_sli4_rspiocb_info sli4_info; 80 }; 81 82 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 83 84 #define IOCB_SUCCESS 0 85 #define IOCB_BUSY 1 86 #define IOCB_ERROR 2 87 #define IOCB_TIMEDOUT 3 88 89 #define LPFC_MBX_WAKE 1 90 #define LPFC_MBX_IMED_UNREG 2 91 92 typedef struct lpfcMboxq { 93 /* MBOXQs are used in single linked lists */ 94 struct list_head list; /* ptr to next mailbox command */ 95 union { 96 MAILBOX_t mb; /* Mailbox cmd */ 97 struct lpfc_mqe mqe; 98 } u; 99 struct lpfc_vport *vport;/* virtual port pointer */ 100 void *context1; /* caller context information */ 101 void *context2; /* caller context information */ 102 103 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 104 uint8_t mbox_flag; 105 struct lpfc_mcqe mcqe; 106 struct lpfc_mbx_nembed_sge_virt *sge_array; 107 } LPFC_MBOXQ_t; 108 109 #define MBX_POLL 1 /* poll mailbox till command done, then 110 return */ 111 #define MBX_NOWAIT 2 /* issue command then return immediately */ 112 113 #define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per 114 ring */ 115 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */ 116 117 struct lpfc_sli_ring; 118 119 struct lpfc_sli_ring_mask { 120 uint8_t profile; /* profile associated with ring */ 121 uint8_t rctl; /* rctl / type pair configured for ring */ 122 uint8_t type; /* rctl / type pair configured for ring */ 123 uint8_t rsvd; 124 /* rcv'd unsol event */ 125 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 126 struct lpfc_sli_ring *, 127 struct lpfc_iocbq *); 128 }; 129 130 131 /* Structure used to hold SLI statistical counters and info */ 132 struct lpfc_sli_ring_stat { 133 uint64_t iocb_event; /* IOCB event counters */ 134 uint64_t iocb_cmd; /* IOCB cmd issued */ 135 uint64_t iocb_rsp; /* IOCB rsp received */ 136 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 137 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 138 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 139 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 140 }; 141 142 /* Structure used to hold SLI ring information */ 143 struct lpfc_sli_ring { 144 uint16_t flag; /* ring flags */ 145 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 146 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 147 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 148 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 149 150 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 151 uint32_t next_cmdidx; /* next_cmd index */ 152 uint32_t rspidx; /* current index in response ring */ 153 uint32_t cmdidx; /* current index in command ring */ 154 uint8_t rsvd; 155 uint8_t ringno; /* ring number */ 156 uint16_t numCiocb; /* number of command iocb's per ring */ 157 uint16_t numRiocb; /* number of rsp iocb's per ring */ 158 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 159 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 160 161 uint32_t fast_iotag; /* max fastlookup based iotag */ 162 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 163 uint32_t iotag_max; /* max iotag value to use */ 164 struct list_head txq; 165 uint16_t txq_cnt; /* current length of queue */ 166 uint16_t txq_max; /* max length */ 167 struct list_head txcmplq; 168 uint16_t txcmplq_cnt; /* current length of queue */ 169 uint16_t txcmplq_max; /* max length */ 170 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 171 uint32_t *rspringaddr; /* virtual address for rsp rings */ 172 uint32_t missbufcnt; /* keep track of buffers to post */ 173 struct list_head postbufq; 174 uint16_t postbufq_cnt; /* current length of queue */ 175 uint16_t postbufq_max; /* max length */ 176 struct list_head iocb_continueq; 177 uint16_t iocb_continueq_cnt; /* current length of queue */ 178 uint16_t iocb_continueq_max; /* max length */ 179 struct list_head iocb_continue_saveq; 180 181 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 182 uint32_t num_mask; /* number of mask entries in prt array */ 183 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 184 struct lpfc_sli_ring *, struct lpfc_iocbq *); 185 186 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 187 188 /* cmd ring available */ 189 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 190 struct lpfc_sli_ring *); 191 }; 192 193 /* Structure used for configuring rings to a specific profile or rctl / type */ 194 struct lpfc_hbq_init { 195 uint32_t rn; /* Receive buffer notification */ 196 uint32_t entry_count; /* max # of entries in HBQ */ 197 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 198 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 199 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 200 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 201 * ring2=b0100 */ 202 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 203 204 uint32_t seqlenoff; 205 uint32_t maxlen; 206 uint32_t seqlenbcnt; 207 uint32_t cmdcodeoff; 208 uint32_t cmdmatch[8]; 209 uint32_t mask_count; /* number of mask entries in prt array */ 210 struct hbq_mask hbqMasks[6]; 211 212 /* Non-config rings fields to keep track of buffer allocations */ 213 uint32_t buffer_count; /* number of buffers allocated */ 214 uint32_t init_count; /* number to allocate when initialized */ 215 uint32_t add_count; /* number to allocate when starved */ 216 } ; 217 218 /* Structure used to hold SLI statistical counters and info */ 219 struct lpfc_sli_stat { 220 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 221 uint64_t mbox_cmd; /* Mailbox commands issued */ 222 uint64_t sli_intr; /* Count of Host Attention interrupts */ 223 uint32_t err_attn_event; /* Error Attn event counters */ 224 uint32_t link_event; /* Link event counters */ 225 uint32_t mbox_event; /* Mailbox event counters */ 226 uint32_t mbox_busy; /* Mailbox cmd busy */ 227 }; 228 229 /* Structure to store link status values when port stats are reset */ 230 struct lpfc_lnk_stat { 231 uint32_t link_failure_count; 232 uint32_t loss_of_sync_count; 233 uint32_t loss_of_signal_count; 234 uint32_t prim_seq_protocol_err_count; 235 uint32_t invalid_tx_word_count; 236 uint32_t invalid_crc_count; 237 uint32_t error_frames; 238 uint32_t link_events; 239 }; 240 241 /* Structure used to hold SLI information */ 242 struct lpfc_sli { 243 uint32_t num_rings; 244 uint32_t sli_flag; 245 246 /* Additional sli_flags */ 247 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 248 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 249 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 250 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 251 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 252 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 253 254 struct lpfc_sli_ring ring[LPFC_MAX_RING]; 255 int fcp_ring; /* ring used for FCP initiator commands */ 256 int next_ring; 257 258 int extra_ring; /* extra ring used for other protocols */ 259 260 struct lpfc_sli_stat slistat; /* SLI statistical info */ 261 struct list_head mboxq; 262 uint16_t mboxq_cnt; /* current length of queue */ 263 uint16_t mboxq_max; /* max length */ 264 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 265 struct list_head mboxq_cmpl; 266 267 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 268 cmd */ 269 270 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 271 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 272 size_t iocbq_lookup_len; /* current lengs of the array */ 273 uint16_t last_iotag; /* last allocated IOTAG */ 274 unsigned long stats_start; /* in seconds */ 275 struct lpfc_lnk_stat lnk_stat_offsets; 276 }; 277 278 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox 279 command */ 280 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox 281 command */ 282 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write 283 * or erase cmds. This is especially 284 * long because of the potential of 285 * multiple flash erases that can be 286 * spawned. 287 */ 288