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 handle IOCB requests / responses */ 33 struct lpfc_iocbq { 34 /* lpfc_iocbqs are used in double linked lists */ 35 struct list_head list; 36 struct list_head clist; 37 uint16_t iotag; /* pre-assigned IO tag */ 38 uint16_t rsvd1; 39 40 IOCB_t iocb; /* IOCB cmd */ 41 uint8_t retry; /* retry counter for IOCB cmd - if needed */ 42 uint8_t iocb_flag; 43 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 44 #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */ 45 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 46 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 47 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 48 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 49 50 uint8_t abort_count; 51 uint8_t rsvd2; 52 uint32_t drvrTimeout; /* driver timeout in seconds */ 53 struct lpfc_vport *vport;/* virtual port pointer */ 54 void *context1; /* caller context information */ 55 void *context2; /* caller context information */ 56 void *context3; /* caller context information */ 57 union { 58 wait_queue_head_t *wait_queue; 59 struct lpfc_iocbq *rsp_iocb; 60 struct lpfcMboxq *mbox; 61 struct lpfc_nodelist *ndlp; 62 } context_un; 63 64 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 65 struct lpfc_iocbq *); 66 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 67 struct lpfc_iocbq *); 68 69 }; 70 71 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 72 73 #define IOCB_SUCCESS 0 74 #define IOCB_BUSY 1 75 #define IOCB_ERROR 2 76 #define IOCB_TIMEDOUT 3 77 78 #define LPFC_MBX_WAKE 1 79 #define LPFC_MBX_IMED_UNREG 2 80 81 typedef struct lpfcMboxq { 82 /* MBOXQs are used in single linked lists */ 83 struct list_head list; /* ptr to next mailbox command */ 84 MAILBOX_t mb; /* Mailbox cmd */ 85 struct lpfc_vport *vport;/* virutal port pointer */ 86 void *context1; /* caller context information */ 87 void *context2; /* caller context information */ 88 89 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 90 uint8_t mbox_flag; 91 92 } LPFC_MBOXQ_t; 93 94 #define MBX_POLL 1 /* poll mailbox till command done, then 95 return */ 96 #define MBX_NOWAIT 2 /* issue command then return immediately */ 97 98 #define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per 99 ring */ 100 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */ 101 102 struct lpfc_sli_ring; 103 104 struct lpfc_sli_ring_mask { 105 uint8_t profile; /* profile associated with ring */ 106 uint8_t rctl; /* rctl / type pair configured for ring */ 107 uint8_t type; /* rctl / type pair configured for ring */ 108 uint8_t rsvd; 109 /* rcv'd unsol event */ 110 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 111 struct lpfc_sli_ring *, 112 struct lpfc_iocbq *); 113 }; 114 115 116 /* Structure used to hold SLI statistical counters and info */ 117 struct lpfc_sli_ring_stat { 118 uint64_t iocb_event; /* IOCB event counters */ 119 uint64_t iocb_cmd; /* IOCB cmd issued */ 120 uint64_t iocb_rsp; /* IOCB rsp received */ 121 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 122 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 123 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 124 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 125 }; 126 127 /* Structure used to hold SLI ring information */ 128 struct lpfc_sli_ring { 129 uint16_t flag; /* ring flags */ 130 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 131 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 132 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 133 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 134 135 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 136 uint32_t next_cmdidx; /* next_cmd index */ 137 uint32_t rspidx; /* current index in response ring */ 138 uint32_t cmdidx; /* current index in command ring */ 139 uint8_t rsvd; 140 uint8_t ringno; /* ring number */ 141 uint16_t numCiocb; /* number of command iocb's per ring */ 142 uint16_t numRiocb; /* number of rsp iocb's per ring */ 143 uint16_t sizeCiocb; /* Size of command iocb's in this ring */ 144 uint16_t sizeRiocb; /* Size of response iocb's in this ring */ 145 146 uint32_t fast_iotag; /* max fastlookup based iotag */ 147 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 148 uint32_t iotag_max; /* max iotag value to use */ 149 struct list_head txq; 150 uint16_t txq_cnt; /* current length of queue */ 151 uint16_t txq_max; /* max length */ 152 struct list_head txcmplq; 153 uint16_t txcmplq_cnt; /* current length of queue */ 154 uint16_t txcmplq_max; /* max length */ 155 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 156 uint32_t *rspringaddr; /* virtual address for rsp rings */ 157 uint32_t missbufcnt; /* keep track of buffers to post */ 158 struct list_head postbufq; 159 uint16_t postbufq_cnt; /* current length of queue */ 160 uint16_t postbufq_max; /* max length */ 161 struct list_head iocb_continueq; 162 uint16_t iocb_continueq_cnt; /* current length of queue */ 163 uint16_t iocb_continueq_max; /* max length */ 164 struct list_head iocb_continue_saveq; 165 166 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 167 uint32_t num_mask; /* number of mask entries in prt array */ 168 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 169 struct lpfc_sli_ring *, struct lpfc_iocbq *); 170 171 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 172 173 /* cmd ring available */ 174 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 175 struct lpfc_sli_ring *); 176 }; 177 178 /* Structure used for configuring rings to a specific profile or rctl / type */ 179 struct lpfc_hbq_init { 180 uint32_t rn; /* Receive buffer notification */ 181 uint32_t entry_count; /* max # of entries in HBQ */ 182 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 183 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 184 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 185 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 186 * ring2=b0100 */ 187 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 188 189 uint32_t seqlenoff; 190 uint32_t maxlen; 191 uint32_t seqlenbcnt; 192 uint32_t cmdcodeoff; 193 uint32_t cmdmatch[8]; 194 uint32_t mask_count; /* number of mask entries in prt array */ 195 struct hbq_mask hbqMasks[6]; 196 197 /* Non-config rings fields to keep track of buffer allocations */ 198 uint32_t buffer_count; /* number of buffers allocated */ 199 uint32_t init_count; /* number to allocate when initialized */ 200 uint32_t add_count; /* number to allocate when starved */ 201 } ; 202 203 /* Structure used to hold SLI statistical counters and info */ 204 struct lpfc_sli_stat { 205 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 206 uint64_t mbox_cmd; /* Mailbox commands issued */ 207 uint64_t sli_intr; /* Count of Host Attention interrupts */ 208 uint32_t err_attn_event; /* Error Attn event counters */ 209 uint32_t link_event; /* Link event counters */ 210 uint32_t mbox_event; /* Mailbox event counters */ 211 uint32_t mbox_busy; /* Mailbox cmd busy */ 212 }; 213 214 /* Structure to store link status values when port stats are reset */ 215 struct lpfc_lnk_stat { 216 uint32_t link_failure_count; 217 uint32_t loss_of_sync_count; 218 uint32_t loss_of_signal_count; 219 uint32_t prim_seq_protocol_err_count; 220 uint32_t invalid_tx_word_count; 221 uint32_t invalid_crc_count; 222 uint32_t error_frames; 223 uint32_t link_events; 224 }; 225 226 /* Structure used to hold SLI information */ 227 struct lpfc_sli { 228 uint32_t num_rings; 229 uint32_t sli_flag; 230 231 /* Additional sli_flags */ 232 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 233 #define LPFC_SLI2_ACTIVE 0x200 /* SLI2 overlay in firmware is active */ 234 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 235 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 236 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 237 238 struct lpfc_sli_ring ring[LPFC_MAX_RING]; 239 int fcp_ring; /* ring used for FCP initiator commands */ 240 int next_ring; 241 242 int extra_ring; /* extra ring used for other protocols */ 243 244 struct lpfc_sli_stat slistat; /* SLI statistical info */ 245 struct list_head mboxq; 246 uint16_t mboxq_cnt; /* current length of queue */ 247 uint16_t mboxq_max; /* max length */ 248 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 249 struct list_head mboxq_cmpl; 250 251 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 252 cmd */ 253 254 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 255 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 256 size_t iocbq_lookup_len; /* current lengs of the array */ 257 uint16_t last_iotag; /* last allocated IOTAG */ 258 unsigned long stats_start; /* in seconds */ 259 struct lpfc_lnk_stat lnk_stat_offsets; 260 }; 261 262 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox 263 command */ 264 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write 265 * or erase cmds. This is especially 266 * long because of the potential of 267 * multiple flash erases that can be 268 * spawned. 269 */ 270