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. *
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 *******************************************************************/
21 /* forward declaration for LPFC_IOCB_t's use */
25 /* Define the context types that SLI handles for abort and sums. */
26 typedef enum _lpfc_ctx_cmd {
32 struct lpfc_cq_event {
33 struct list_head list;
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_rcqe rcqe_cmpl;
40 struct sli4_wcqe_xri_aborted wcqe_axri;
41 struct lpfc_wcqe_complete wcqe_cmpl;
45 /* This structure is used to handle IOCB requests / responses */
47 /* lpfc_iocbqs are used in double linked lists */
48 struct list_head list;
49 struct list_head clist;
50 uint16_t iotag; /* pre-assigned IO tag */
51 uint16_t sli4_xritag; /* pre-assigned XRI, (OXID) tag. */
52 struct lpfc_cq_event cq_event;
54 IOCB_t iocb; /* IOCB cmd */
55 uint8_t retry; /* retry counter for IOCB cmd - if needed */
57 #define LPFC_IO_LIBDFC 1 /* libdfc iocb */
58 #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */
59 #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */
60 #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */
61 #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */
62 #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */
63 #define LPFC_FIP_ELS_ID_MASK 0xc0 /* ELS_ID range 0-3 */
64 #define LPFC_FIP_ELS_ID_SHIFT 6
68 uint32_t drvrTimeout; /* driver timeout in seconds */
69 struct lpfc_vport *vport;/* virtual port pointer */
70 void *context1; /* caller context information */
71 void *context2; /* caller context information */
72 void *context3; /* caller context information */
74 wait_queue_head_t *wait_queue;
75 struct lpfc_iocbq *rsp_iocb;
76 struct lpfcMboxq *mbox;
77 struct lpfc_nodelist *ndlp;
80 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
82 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
86 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
88 #define IOCB_SUCCESS 0
91 #define IOCB_TIMEDOUT 3
93 #define LPFC_MBX_WAKE 1
94 #define LPFC_MBX_IMED_UNREG 2
96 typedef struct lpfcMboxq {
97 /* MBOXQs are used in single linked lists */
98 struct list_head list; /* ptr to next mailbox command */
100 MAILBOX_t mb; /* Mailbox cmd */
103 struct lpfc_vport *vport;/* virtual port pointer */
104 void *context1; /* caller context information */
105 void *context2; /* caller context information */
107 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
109 struct lpfc_mcqe mcqe;
110 struct lpfc_mbx_nembed_sge_virt *sge_array;
113 #define MBX_POLL 1 /* poll mailbox till command done, then
115 #define MBX_NOWAIT 2 /* issue command then return immediately */
117 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per
119 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
121 struct lpfc_sli_ring;
123 struct lpfc_sli_ring_mask {
124 uint8_t profile; /* profile associated with ring */
125 uint8_t rctl; /* rctl / type pair configured for ring */
126 uint8_t type; /* rctl / type pair configured for ring */
128 /* rcv'd unsol event */
129 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
130 struct lpfc_sli_ring *,
131 struct lpfc_iocbq *);
135 /* Structure used to hold SLI statistical counters and info */
136 struct lpfc_sli_ring_stat {
137 uint64_t iocb_event; /* IOCB event counters */
138 uint64_t iocb_cmd; /* IOCB cmd issued */
139 uint64_t iocb_rsp; /* IOCB rsp received */
140 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
141 uint64_t iocb_cmd_full; /* IOCB cmd ring full */
142 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
143 uint64_t iocb_rsp_full; /* IOCB rsp ring full */
146 /* Structure used to hold SLI ring information */
147 struct lpfc_sli_ring {
148 uint16_t flag; /* ring flags */
149 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
150 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
151 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
152 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
154 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
155 uint32_t next_cmdidx; /* next_cmd index */
156 uint32_t rspidx; /* current index in response ring */
157 uint32_t cmdidx; /* current index in command ring */
159 uint8_t ringno; /* ring number */
160 uint16_t numCiocb; /* number of command iocb's per ring */
161 uint16_t numRiocb; /* number of rsp iocb's per ring */
162 uint16_t sizeCiocb; /* Size of command iocb's in this ring */
163 uint16_t sizeRiocb; /* Size of response iocb's in this ring */
165 uint32_t fast_iotag; /* max fastlookup based iotag */
166 uint32_t iotag_ctr; /* keeps track of the next iotag to use */
167 uint32_t iotag_max; /* max iotag value to use */
168 struct list_head txq;
169 uint16_t txq_cnt; /* current length of queue */
170 uint16_t txq_max; /* max length */
171 struct list_head txcmplq;
172 uint16_t txcmplq_cnt; /* current length of queue */
173 uint16_t txcmplq_max; /* max length */
174 uint32_t *cmdringaddr; /* virtual address for cmd rings */
175 uint32_t *rspringaddr; /* virtual address for rsp rings */
176 uint32_t missbufcnt; /* keep track of buffers to post */
177 struct list_head postbufq;
178 uint16_t postbufq_cnt; /* current length of queue */
179 uint16_t postbufq_max; /* max length */
180 struct list_head iocb_continueq;
181 uint16_t iocb_continueq_cnt; /* current length of queue */
182 uint16_t iocb_continueq_max; /* max length */
183 struct list_head iocb_continue_saveq;
185 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
186 uint32_t num_mask; /* number of mask entries in prt array */
187 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
188 struct lpfc_sli_ring *, struct lpfc_iocbq *);
190 struct lpfc_sli_ring_stat stats; /* SLI statistical info */
192 /* cmd ring available */
193 void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
194 struct lpfc_sli_ring *);
197 /* Structure used for configuring rings to a specific profile or rctl / type */
198 struct lpfc_hbq_init {
199 uint32_t rn; /* Receive buffer notification */
200 uint32_t entry_count; /* max # of entries in HBQ */
201 uint32_t headerLen; /* 0 if not profile 4 or 5 */
202 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
203 uint32_t profile; /* Selection profile 0=all, 7=logentry */
204 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
206 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
212 uint32_t cmdmatch[8];
213 uint32_t mask_count; /* number of mask entries in prt array */
214 struct hbq_mask hbqMasks[6];
216 /* Non-config rings fields to keep track of buffer allocations */
217 uint32_t buffer_count; /* number of buffers allocated */
218 uint32_t init_count; /* number to allocate when initialized */
219 uint32_t add_count; /* number to allocate when starved */
222 /* Structure used to hold SLI statistical counters and info */
223 struct lpfc_sli_stat {
224 uint64_t mbox_stat_err; /* Mbox cmds completed status error */
225 uint64_t mbox_cmd; /* Mailbox commands issued */
226 uint64_t sli_intr; /* Count of Host Attention interrupts */
227 uint32_t err_attn_event; /* Error Attn event counters */
228 uint32_t link_event; /* Link event counters */
229 uint32_t mbox_event; /* Mailbox event counters */
230 uint32_t mbox_busy; /* Mailbox cmd busy */
233 /* Structure to store link status values when port stats are reset */
234 struct lpfc_lnk_stat {
235 uint32_t link_failure_count;
236 uint32_t loss_of_sync_count;
237 uint32_t loss_of_signal_count;
238 uint32_t prim_seq_protocol_err_count;
239 uint32_t invalid_tx_word_count;
240 uint32_t invalid_crc_count;
241 uint32_t error_frames;
242 uint32_t link_events;
245 /* Structure used to hold SLI information */
250 /* Additional sli_flags */
251 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
252 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
253 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
254 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
255 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */
256 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
258 struct lpfc_sli_ring ring[LPFC_MAX_RING];
259 int fcp_ring; /* ring used for FCP initiator commands */
262 int extra_ring; /* extra ring used for other protocols */
264 struct lpfc_sli_stat slistat; /* SLI statistical info */
265 struct list_head mboxq;
266 uint16_t mboxq_cnt; /* current length of queue */
267 uint16_t mboxq_max; /* max length */
268 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
269 struct list_head mboxq_cmpl;
271 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
274 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
275 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
276 size_t iocbq_lookup_len; /* current lengs of the array */
277 uint16_t last_iotag; /* last allocated IOTAG */
278 unsigned long stats_start; /* in seconds */
279 struct lpfc_lnk_stat lnk_stat_offsets;
282 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
284 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox
286 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
287 * or erase cmds. This is especially
288 * long because of the potential of
289 * multiple flash erases that can be