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 /* This structure is used to carry the needed response IOCB states */
33 struct lpfc_sli4_rspiocb_info {
42 /* This structure is used to handle IOCB requests / responses */
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. */
50 IOCB_t iocb; /* IOCB cmd */
51 uint8_t retry; /* retry counter for IOCB cmd - if needed */
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 */
62 uint32_t drvrTimeout; /* driver timeout in seconds */
63 struct lpfc_vport *vport;/* virtual port pointer */
64 void *context1; /* caller context information */
65 void *context2; /* caller context information */
66 void *context3; /* caller context information */
68 wait_queue_head_t *wait_queue;
69 struct lpfc_iocbq *rsp_iocb;
70 struct lpfcMboxq *mbox;
71 struct lpfc_nodelist *ndlp;
74 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
76 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
78 struct lpfc_sli4_rspiocb_info sli4_info;
81 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
83 #define IOCB_SUCCESS 0
86 #define IOCB_TIMEDOUT 3
88 #define LPFC_MBX_WAKE 1
89 #define LPFC_MBX_IMED_UNREG 2
91 typedef struct lpfcMboxq {
92 /* MBOXQs are used in single linked lists */
93 struct list_head list; /* ptr to next mailbox command */
95 MAILBOX_t mb; /* Mailbox cmd */
98 struct lpfc_vport *vport;/* virtual port pointer */
99 void *context1; /* caller context information */
100 void *context2; /* caller context information */
102 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
104 struct lpfc_mcqe mcqe;
105 struct lpfc_mbx_nembed_sge_virt *sge_array;
108 #define MBX_POLL 1 /* poll mailbox till command done, then
110 #define MBX_NOWAIT 2 /* issue command then return immediately */
112 #define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per
114 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
116 struct lpfc_sli_ring;
118 struct lpfc_sli_ring_mask {
119 uint8_t profile; /* profile associated with ring */
120 uint8_t rctl; /* rctl / type pair configured for ring */
121 uint8_t type; /* rctl / type pair configured for ring */
123 /* rcv'd unsol event */
124 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
125 struct lpfc_sli_ring *,
126 struct lpfc_iocbq *);
130 /* Structure used to hold SLI statistical counters and info */
131 struct lpfc_sli_ring_stat {
132 uint64_t iocb_event; /* IOCB event counters */
133 uint64_t iocb_cmd; /* IOCB cmd issued */
134 uint64_t iocb_rsp; /* IOCB rsp received */
135 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
136 uint64_t iocb_cmd_full; /* IOCB cmd ring full */
137 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
138 uint64_t iocb_rsp_full; /* IOCB rsp ring full */
141 /* Structure used to hold SLI ring information */
142 struct lpfc_sli_ring {
143 uint16_t flag; /* ring flags */
144 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
145 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
146 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
147 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
149 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
150 uint32_t next_cmdidx; /* next_cmd index */
151 uint32_t rspidx; /* current index in response ring */
152 uint32_t cmdidx; /* current index in command ring */
154 uint8_t ringno; /* ring number */
155 uint16_t numCiocb; /* number of command iocb's per ring */
156 uint16_t numRiocb; /* number of rsp iocb's per ring */
157 uint16_t sizeCiocb; /* Size of command iocb's in this ring */
158 uint16_t sizeRiocb; /* Size of response iocb's in this ring */
160 uint32_t fast_iotag; /* max fastlookup based iotag */
161 uint32_t iotag_ctr; /* keeps track of the next iotag to use */
162 uint32_t iotag_max; /* max iotag value to use */
163 struct list_head txq;
164 uint16_t txq_cnt; /* current length of queue */
165 uint16_t txq_max; /* max length */
166 struct list_head txcmplq;
167 uint16_t txcmplq_cnt; /* current length of queue */
168 uint16_t txcmplq_max; /* max length */
169 uint32_t *cmdringaddr; /* virtual address for cmd rings */
170 uint32_t *rspringaddr; /* virtual address for rsp rings */
171 uint32_t missbufcnt; /* keep track of buffers to post */
172 struct list_head postbufq;
173 uint16_t postbufq_cnt; /* current length of queue */
174 uint16_t postbufq_max; /* max length */
175 struct list_head iocb_continueq;
176 uint16_t iocb_continueq_cnt; /* current length of queue */
177 uint16_t iocb_continueq_max; /* max length */
178 struct list_head iocb_continue_saveq;
180 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
181 uint32_t num_mask; /* number of mask entries in prt array */
182 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
183 struct lpfc_sli_ring *, struct lpfc_iocbq *);
185 struct lpfc_sli_ring_stat stats; /* SLI statistical info */
187 /* cmd ring available */
188 void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
189 struct lpfc_sli_ring *);
192 /* Structure used for configuring rings to a specific profile or rctl / type */
193 struct lpfc_hbq_init {
194 uint32_t rn; /* Receive buffer notification */
195 uint32_t entry_count; /* max # of entries in HBQ */
196 uint32_t headerLen; /* 0 if not profile 4 or 5 */
197 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
198 uint32_t profile; /* Selection profile 0=all, 7=logentry */
199 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
201 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
207 uint32_t cmdmatch[8];
208 uint32_t mask_count; /* number of mask entries in prt array */
209 struct hbq_mask hbqMasks[6];
211 /* Non-config rings fields to keep track of buffer allocations */
212 uint32_t buffer_count; /* number of buffers allocated */
213 uint32_t init_count; /* number to allocate when initialized */
214 uint32_t add_count; /* number to allocate when starved */
217 /* Structure used to hold SLI statistical counters and info */
218 struct lpfc_sli_stat {
219 uint64_t mbox_stat_err; /* Mbox cmds completed status error */
220 uint64_t mbox_cmd; /* Mailbox commands issued */
221 uint64_t sli_intr; /* Count of Host Attention interrupts */
222 uint32_t err_attn_event; /* Error Attn event counters */
223 uint32_t link_event; /* Link event counters */
224 uint32_t mbox_event; /* Mailbox event counters */
225 uint32_t mbox_busy; /* Mailbox cmd busy */
228 /* Structure to store link status values when port stats are reset */
229 struct lpfc_lnk_stat {
230 uint32_t link_failure_count;
231 uint32_t loss_of_sync_count;
232 uint32_t loss_of_signal_count;
233 uint32_t prim_seq_protocol_err_count;
234 uint32_t invalid_tx_word_count;
235 uint32_t invalid_crc_count;
236 uint32_t error_frames;
237 uint32_t link_events;
240 /* Structure used to hold SLI information */
245 /* Additional sli_flags */
246 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
247 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
248 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
249 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
250 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */
251 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
253 struct lpfc_sli_ring ring[LPFC_MAX_RING];
254 int fcp_ring; /* ring used for FCP initiator commands */
257 int extra_ring; /* extra ring used for other protocols */
259 struct lpfc_sli_stat slistat; /* SLI statistical info */
260 struct list_head mboxq;
261 uint16_t mboxq_cnt; /* current length of queue */
262 uint16_t mboxq_max; /* max length */
263 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
264 struct list_head mboxq_cmpl;
266 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
269 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
270 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
271 size_t iocbq_lookup_len; /* current lengs of the array */
272 uint16_t last_iotag; /* last allocated IOTAG */
273 unsigned long stats_start; /* in seconds */
274 struct lpfc_lnk_stat lnk_stat_offsets;
277 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
279 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox
281 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
282 * or erase cmds. This is especially
283 * long because of the potential of
284 * multiple flash erases that can be