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 */ 22struct lpfc_hba; 23struct lpfc_vport; 24 25/* Define the context types that SLI handles for abort and sums. */ 26typedef enum _lpfc_ctx_cmd { 27 LPFC_CTX_LUN, 28 LPFC_CTX_TGT, 29 LPFC_CTX_HOST 30} lpfc_ctx_cmd; 31 32struct 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_fcoe acqe_fcoe; 38 struct lpfc_acqe_dcbx acqe_dcbx; 39 struct lpfc_acqe_grp5 acqe_grp5; 40 struct lpfc_rcqe rcqe_cmpl; 41 struct sli4_wcqe_xri_aborted wcqe_axri; 42 struct lpfc_wcqe_complete wcqe_cmpl; 43 } cqe; 44}; 45 46/* This structure is used to handle IOCB requests / responses */ 47struct lpfc_iocbq { 48 /* lpfc_iocbqs are used in double linked lists */ 49 struct list_head list; 50 struct list_head clist; 51 struct list_head dlist; 52 uint16_t iotag; /* pre-assigned IO tag */ 53 uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */ 54 struct lpfc_cq_event cq_event; 55 56 IOCB_t iocb; /* IOCB cmd */ 57 uint8_t retry; /* retry counter for IOCB cmd - if needed */ 58 uint16_t iocb_flag; 59#define LPFC_IO_LIBDFC 1 /* libdfc iocb */ 60#define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */ 61#define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ 62#define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ 63#define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ 64#define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ 65#define LPFC_EXCHANGE_BUSY 0x40 /* SLI4 hba reported XB in response */ 66#define LPFC_USE_FCPWQIDX 0x80 /* Submit to specified FCPWQ index */ 67#define DSS_SECURITY_OP 0x100 /* security IO */ 68#define LPFC_IO_ON_Q 0x200 /* The IO is still on the TXCMPLQ */ 69 70#define LPFC_FIP_ELS_ID_MASK 0xc000 /* ELS_ID range 0-3, non-shifted mask */ 71#define LPFC_FIP_ELS_ID_SHIFT 14 72 73 uint8_t rsvd2; 74 uint32_t drvrTimeout; /* driver timeout in seconds */ 75 uint32_t fcp_wqidx; /* index to FCP work queue */ 76 struct lpfc_vport *vport;/* virtual port pointer */ 77 void *context1; /* caller context information */ 78 void *context2; /* caller context information */ 79 void *context3; /* caller context information */ 80 union { 81 wait_queue_head_t *wait_queue; 82 struct lpfc_iocbq *rsp_iocb; 83 struct lpfcMboxq *mbox; 84 struct lpfc_nodelist *ndlp; 85 } context_un; 86 87 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 88 struct lpfc_iocbq *); 89 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, 90 struct lpfc_iocbq *); 91}; 92 93#define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ 94 95#define IOCB_SUCCESS 0 96#define IOCB_BUSY 1 97#define IOCB_ERROR 2 98#define IOCB_TIMEDOUT 3 99 100#define LPFC_MBX_WAKE 1 101#define LPFC_MBX_IMED_UNREG 2 102 103typedef struct lpfcMboxq { 104 /* MBOXQs are used in single linked lists */ 105 struct list_head list; /* ptr to next mailbox command */ 106 union { 107 MAILBOX_t mb; /* Mailbox cmd */ 108 struct lpfc_mqe mqe; 109 } u; 110 struct lpfc_vport *vport;/* virtual port pointer */ 111 void *context1; /* caller context information */ 112 void *context2; /* caller context information */ 113 114 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); 115 uint8_t mbox_flag; 116 uint16_t in_ext_byte_len; 117 uint16_t out_ext_byte_len; 118 uint8_t mbox_offset_word; 119 struct lpfc_mcqe mcqe; 120 struct lpfc_mbx_nembed_sge_virt *sge_array; 121} LPFC_MBOXQ_t; 122 123#define MBX_POLL 1 /* poll mailbox till command done, then 124 return */ 125#define MBX_NOWAIT 2 /* issue command then return immediately */ 126 127#define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per 128 ring */ 129#define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */ 130 131struct lpfc_sli_ring; 132 133struct lpfc_sli_ring_mask { 134 uint8_t profile; /* profile associated with ring */ 135 uint8_t rctl; /* rctl / type pair configured for ring */ 136 uint8_t type; /* rctl / type pair configured for ring */ 137 uint8_t rsvd; 138 /* rcv'd unsol event */ 139 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, 140 struct lpfc_sli_ring *, 141 struct lpfc_iocbq *); 142}; 143 144 145/* Structure used to hold SLI statistical counters and info */ 146struct lpfc_sli_ring_stat { 147 uint64_t iocb_event; /* IOCB event counters */ 148 uint64_t iocb_cmd; /* IOCB cmd issued */ 149 uint64_t iocb_rsp; /* IOCB rsp received */ 150 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ 151 uint64_t iocb_cmd_full; /* IOCB cmd ring full */ 152 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ 153 uint64_t iocb_rsp_full; /* IOCB rsp ring full */ 154}; 155 156/* Structure used to hold SLI ring information */ 157struct lpfc_sli_ring { 158 uint16_t flag; /* ring flags */ 159#define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ 160#define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ 161#define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ 162 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ 163 164 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ 165 uint32_t next_cmdidx; /* next_cmd index */ 166 uint32_t rspidx; /* current index in response ring */ 167 uint32_t cmdidx; /* current index in command ring */ 168 uint8_t rsvd; 169 uint8_t ringno; /* ring number */ 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 */ 174 175 uint32_t fast_iotag; /* max fastlookup based iotag */ 176 uint32_t iotag_ctr; /* keeps track of the next iotag to use */ 177 uint32_t iotag_max; /* max iotag value to use */ 178 struct list_head txq; 179 uint16_t txq_cnt; /* current length of queue */ 180 uint16_t txq_max; /* max length */ 181 struct list_head txcmplq; 182 uint16_t txcmplq_cnt; /* current length of queue */ 183 uint16_t txcmplq_max; /* max length */ 184 uint32_t *cmdringaddr; /* virtual address for cmd rings */ 185 uint32_t *rspringaddr; /* virtual address for rsp rings */ 186 uint32_t missbufcnt; /* keep track of buffers to post */ 187 struct list_head postbufq; 188 uint16_t postbufq_cnt; /* current length of queue */ 189 uint16_t postbufq_max; /* max length */ 190 struct list_head iocb_continueq; 191 uint16_t iocb_continueq_cnt; /* current length of queue */ 192 uint16_t iocb_continueq_max; /* max length */ 193 struct list_head iocb_continue_saveq; 194 195 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; 196 uint32_t num_mask; /* number of mask entries in prt array */ 197 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, 198 struct lpfc_sli_ring *, struct lpfc_iocbq *); 199 200 struct lpfc_sli_ring_stat stats; /* SLI statistical info */ 201 202 /* cmd ring available */ 203 void (*lpfc_sli_cmd_available) (struct lpfc_hba *, 204 struct lpfc_sli_ring *); 205}; 206 207/* Structure used for configuring rings to a specific profile or rctl / type */ 208struct lpfc_hbq_init { 209 uint32_t rn; /* Receive buffer notification */ 210 uint32_t entry_count; /* max # of entries in HBQ */ 211 uint32_t headerLen; /* 0 if not profile 4 or 5 */ 212 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ 213 uint32_t profile; /* Selection profile 0=all, 7=logentry */ 214 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, 215 * ring2=b0100 */ 216 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ 217 218 uint32_t seqlenoff; 219 uint32_t maxlen; 220 uint32_t seqlenbcnt; 221 uint32_t cmdcodeoff; 222 uint32_t cmdmatch[8]; 223 uint32_t mask_count; /* number of mask entries in prt array */ 224 struct hbq_mask hbqMasks[6]; 225 226 /* Non-config rings fields to keep track of buffer allocations */ 227 uint32_t buffer_count; /* number of buffers allocated */ 228 uint32_t init_count; /* number to allocate when initialized */ 229 uint32_t add_count; /* number to allocate when starved */ 230} ; 231 232/* Structure used to hold SLI statistical counters and info */ 233struct lpfc_sli_stat { 234 uint64_t mbox_stat_err; /* Mbox cmds completed status error */ 235 uint64_t mbox_cmd; /* Mailbox commands issued */ 236 uint64_t sli_intr; /* Count of Host Attention interrupts */ 237 uint32_t err_attn_event; /* Error Attn event counters */ 238 uint32_t link_event; /* Link event counters */ 239 uint32_t mbox_event; /* Mailbox event counters */ 240 uint32_t mbox_busy; /* Mailbox cmd busy */ 241}; 242 243/* Structure to store link status values when port stats are reset */ 244struct lpfc_lnk_stat { 245 uint32_t link_failure_count; 246 uint32_t loss_of_sync_count; 247 uint32_t loss_of_signal_count; 248 uint32_t prim_seq_protocol_err_count; 249 uint32_t invalid_tx_word_count; 250 uint32_t invalid_crc_count; 251 uint32_t error_frames; 252 uint32_t link_events; 253}; 254 255/* Structure used to hold SLI information */ 256struct lpfc_sli { 257 uint32_t num_rings; 258 uint32_t sli_flag; 259 260 /* Additional sli_flags */ 261#define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ 262#define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */ 263#define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ 264#define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ 265#define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */ 266#define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */ 267 268 struct lpfc_sli_ring ring[LPFC_MAX_RING]; 269 int fcp_ring; /* ring used for FCP initiator commands */ 270 int next_ring; 271 272 int extra_ring; /* extra ring used for other protocols */ 273 274 struct lpfc_sli_stat slistat; /* SLI statistical info */ 275 struct list_head mboxq; 276 uint16_t mboxq_cnt; /* current length of queue */ 277 uint16_t mboxq_max; /* max length */ 278 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ 279 struct list_head mboxq_cmpl; 280 281 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox 282 cmd */ 283 284#define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 285 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ 286 size_t iocbq_lookup_len; /* current lengs of the array */ 287 uint16_t last_iotag; /* last allocated IOTAG */ 288 unsigned long stats_start; /* in seconds */ 289 struct lpfc_lnk_stat lnk_stat_offsets; 290}; 291 292#define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox 293 command */ 294#define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox 295 command */ 296#define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write 297 * or erase cmds. This is especially 298 * long because of the potential of 299 * multiple flash erases that can be 300 * spawned. 301 */ 302