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 0x40
67 uint32_t drvrTimeout; /* driver timeout in seconds */
68 struct lpfc_vport *vport;/* virtual port pointer */
69 void *context1; /* caller context information */
70 void *context2; /* caller context information */
71 void *context3; /* caller context information */
73 wait_queue_head_t *wait_queue;
74 struct lpfc_iocbq *rsp_iocb;
75 struct lpfcMboxq *mbox;
76 struct lpfc_nodelist *ndlp;
79 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
81 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
85 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
87 #define IOCB_SUCCESS 0
90 #define IOCB_TIMEDOUT 3
92 #define LPFC_MBX_WAKE 1
93 #define LPFC_MBX_IMED_UNREG 2
95 typedef struct lpfcMboxq {
96 /* MBOXQs are used in single linked lists */
97 struct list_head list; /* ptr to next mailbox command */
99 MAILBOX_t mb; /* Mailbox cmd */
102 struct lpfc_vport *vport;/* virtual port pointer */
103 void *context1; /* caller context information */
104 void *context2; /* caller context information */
106 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
108 struct lpfc_mcqe mcqe;
109 struct lpfc_mbx_nembed_sge_virt *sge_array;
112 #define MBX_POLL 1 /* poll mailbox till command done, then
114 #define MBX_NOWAIT 2 /* issue command then return immediately */
116 #define LPFC_MAX_RING_MASK 5 /* max num of rctl/type masks allowed per
118 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
120 struct lpfc_sli_ring;
122 struct lpfc_sli_ring_mask {
123 uint8_t profile; /* profile associated with ring */
124 uint8_t rctl; /* rctl / type pair configured for ring */
125 uint8_t type; /* rctl / type pair configured for ring */
127 /* rcv'd unsol event */
128 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
129 struct lpfc_sli_ring *,
130 struct lpfc_iocbq *);
134 /* Structure used to hold SLI statistical counters and info */
135 struct lpfc_sli_ring_stat {
136 uint64_t iocb_event; /* IOCB event counters */
137 uint64_t iocb_cmd; /* IOCB cmd issued */
138 uint64_t iocb_rsp; /* IOCB rsp received */
139 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
140 uint64_t iocb_cmd_full; /* IOCB cmd ring full */
141 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
142 uint64_t iocb_rsp_full; /* IOCB rsp ring full */
145 /* Structure used to hold SLI ring information */
146 struct lpfc_sli_ring {
147 uint16_t flag; /* ring flags */
148 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
149 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
150 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
151 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
153 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
154 uint32_t next_cmdidx; /* next_cmd index */
155 uint32_t rspidx; /* current index in response ring */
156 uint32_t cmdidx; /* current index in command ring */
158 uint8_t ringno; /* ring number */
159 uint16_t numCiocb; /* number of command iocb's per ring */
160 uint16_t numRiocb; /* number of rsp iocb's per ring */
161 uint16_t sizeCiocb; /* Size of command iocb's in this ring */
162 uint16_t sizeRiocb; /* Size of response iocb's in this ring */
164 uint32_t fast_iotag; /* max fastlookup based iotag */
165 uint32_t iotag_ctr; /* keeps track of the next iotag to use */
166 uint32_t iotag_max; /* max iotag value to use */
167 struct list_head txq;
168 uint16_t txq_cnt; /* current length of queue */
169 uint16_t txq_max; /* max length */
170 struct list_head txcmplq;
171 uint16_t txcmplq_cnt; /* current length of queue */
172 uint16_t txcmplq_max; /* max length */
173 uint32_t *cmdringaddr; /* virtual address for cmd rings */
174 uint32_t *rspringaddr; /* virtual address for rsp rings */
175 uint32_t missbufcnt; /* keep track of buffers to post */
176 struct list_head postbufq;
177 uint16_t postbufq_cnt; /* current length of queue */
178 uint16_t postbufq_max; /* max length */
179 struct list_head iocb_continueq;
180 uint16_t iocb_continueq_cnt; /* current length of queue */
181 uint16_t iocb_continueq_max; /* max length */
182 struct list_head iocb_continue_saveq;
184 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
185 uint32_t num_mask; /* number of mask entries in prt array */
186 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
187 struct lpfc_sli_ring *, struct lpfc_iocbq *);
189 struct lpfc_sli_ring_stat stats; /* SLI statistical info */
191 /* cmd ring available */
192 void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
193 struct lpfc_sli_ring *);
196 /* Structure used for configuring rings to a specific profile or rctl / type */
197 struct lpfc_hbq_init {
198 uint32_t rn; /* Receive buffer notification */
199 uint32_t entry_count; /* max # of entries in HBQ */
200 uint32_t headerLen; /* 0 if not profile 4 or 5 */
201 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
202 uint32_t profile; /* Selection profile 0=all, 7=logentry */
203 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
205 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
211 uint32_t cmdmatch[8];
212 uint32_t mask_count; /* number of mask entries in prt array */
213 struct hbq_mask hbqMasks[6];
215 /* Non-config rings fields to keep track of buffer allocations */
216 uint32_t buffer_count; /* number of buffers allocated */
217 uint32_t init_count; /* number to allocate when initialized */
218 uint32_t add_count; /* number to allocate when starved */
221 /* Structure used to hold SLI statistical counters and info */
222 struct lpfc_sli_stat {
223 uint64_t mbox_stat_err; /* Mbox cmds completed status error */
224 uint64_t mbox_cmd; /* Mailbox commands issued */
225 uint64_t sli_intr; /* Count of Host Attention interrupts */
226 uint32_t err_attn_event; /* Error Attn event counters */
227 uint32_t link_event; /* Link event counters */
228 uint32_t mbox_event; /* Mailbox event counters */
229 uint32_t mbox_busy; /* Mailbox cmd busy */
232 /* Structure to store link status values when port stats are reset */
233 struct lpfc_lnk_stat {
234 uint32_t link_failure_count;
235 uint32_t loss_of_sync_count;
236 uint32_t loss_of_signal_count;
237 uint32_t prim_seq_protocol_err_count;
238 uint32_t invalid_tx_word_count;
239 uint32_t invalid_crc_count;
240 uint32_t error_frames;
241 uint32_t link_events;
244 /* Structure used to hold SLI information */
249 /* Additional sli_flags */
250 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
251 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
252 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
253 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
254 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */
255 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
257 struct lpfc_sli_ring ring[LPFC_MAX_RING];
258 int fcp_ring; /* ring used for FCP initiator commands */
261 int extra_ring; /* extra ring used for other protocols */
263 struct lpfc_sli_stat slistat; /* SLI statistical info */
264 struct list_head mboxq;
265 uint16_t mboxq_cnt; /* current length of queue */
266 uint16_t mboxq_max; /* max length */
267 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
268 struct list_head mboxq_cmpl;
270 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
273 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
274 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
275 size_t iocbq_lookup_len; /* current lengs of the array */
276 uint16_t last_iotag; /* last allocated IOTAG */
277 unsigned long stats_start; /* in seconds */
278 struct lpfc_lnk_stat lnk_stat_offsets;
281 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
283 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox
285 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
286 * or erase cmds. This is especially
287 * long because of the potential of
288 * multiple flash erases that can be