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 carry the needed response IOCB states */
33 struct lpfc_sli4_rspiocb_info {
34 uint8_t hw_status;
35 uint8_t bfield;
36 #define LPFC_XB 0x1
37 #define LPFC_PV 0x2
38 uint8_t priority;
39 uint8_t reserved;
40 };
41
42 /* This structure is used to handle IOCB requests / responses */
43 struct lpfc_iocbq {
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. */
49
50 IOCB_t iocb; /* IOCB cmd */
51 uint8_t retry; /* retry counter for IOCB cmd - if needed */
52 uint8_t iocb_flag;
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 */
59 #define LPFC_FIP_ELS 0x40
60
61 uint8_t abort_count;
62 uint8_t rsvd2;
63 uint32_t drvrTimeout; /* driver timeout in seconds */
64 struct lpfc_vport *vport;/* virtual port pointer */
65 void *context1; /* caller context information */
66 void *context2; /* caller context information */
67 void *context3; /* caller context information */
68 union {
69 wait_queue_head_t *wait_queue;
70 struct lpfc_iocbq *rsp_iocb;
71 struct lpfcMboxq *mbox;
72 struct lpfc_nodelist *ndlp;
73 } context_un;
74
75 void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
76 struct lpfc_iocbq *);
77 void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *,
78 struct lpfc_iocbq *);
79 struct lpfc_sli4_rspiocb_info sli4_info;
80 };
81
82 #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */
83
84 #define IOCB_SUCCESS 0
85 #define IOCB_BUSY 1
86 #define IOCB_ERROR 2
87 #define IOCB_TIMEDOUT 3
88
89 #define LPFC_MBX_WAKE 1
90 #define LPFC_MBX_IMED_UNREG 2
91
92 typedef struct lpfcMboxq {
93 /* MBOXQs are used in single linked lists */
94 struct list_head list; /* ptr to next mailbox command */
95 union {
96 MAILBOX_t mb; /* Mailbox cmd */
97 struct lpfc_mqe mqe;
98 } u;
99 struct lpfc_vport *vport;/* virtual port pointer */
100 void *context1; /* caller context information */
101 void *context2; /* caller context information */
102
103 void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *);
104 uint8_t mbox_flag;
105 struct lpfc_mcqe mcqe;
106 struct lpfc_mbx_nembed_sge_virt *sge_array;
107 } LPFC_MBOXQ_t;
108
109 #define MBX_POLL 1 /* poll mailbox till command done, then
110 return */
111 #define MBX_NOWAIT 2 /* issue command then return immediately */
112
113 #define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per
114 ring */
115 #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */
116
117 struct lpfc_sli_ring;
118
119 struct lpfc_sli_ring_mask {
120 uint8_t profile; /* profile associated with ring */
121 uint8_t rctl; /* rctl / type pair configured for ring */
122 uint8_t type; /* rctl / type pair configured for ring */
123 uint8_t rsvd;
124 /* rcv'd unsol event */
125 void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *,
126 struct lpfc_sli_ring *,
127 struct lpfc_iocbq *);
128 };
129
130
131 /* Structure used to hold SLI statistical counters and info */
132 struct lpfc_sli_ring_stat {
133 uint64_t iocb_event; /* IOCB event counters */
134 uint64_t iocb_cmd; /* IOCB cmd issued */
135 uint64_t iocb_rsp; /* IOCB rsp received */
136 uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */
137 uint64_t iocb_cmd_full; /* IOCB cmd ring full */
138 uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */
139 uint64_t iocb_rsp_full; /* IOCB rsp ring full */
140 };
141
142 /* Structure used to hold SLI ring information */
143 struct lpfc_sli_ring {
144 uint16_t flag; /* ring flags */
145 #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */
146 #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */
147 #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */
148 uint16_t abtsiotag; /* tracks next iotag to use for ABTS */
149
150 uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */
151 uint32_t next_cmdidx; /* next_cmd index */
152 uint32_t rspidx; /* current index in response ring */
153 uint32_t cmdidx; /* current index in command ring */
154 uint8_t rsvd;
155 uint8_t ringno; /* ring number */
156 uint16_t numCiocb; /* number of command iocb's per ring */
157 uint16_t numRiocb; /* number of rsp iocb's per ring */
158 uint16_t sizeCiocb; /* Size of command iocb's in this ring */
159 uint16_t sizeRiocb; /* Size of response iocb's in this ring */
160
161 uint32_t fast_iotag; /* max fastlookup based iotag */
162 uint32_t iotag_ctr; /* keeps track of the next iotag to use */
163 uint32_t iotag_max; /* max iotag value to use */
164 struct list_head txq;
165 uint16_t txq_cnt; /* current length of queue */
166 uint16_t txq_max; /* max length */
167 struct list_head txcmplq;
168 uint16_t txcmplq_cnt; /* current length of queue */
169 uint16_t txcmplq_max; /* max length */
170 uint32_t *cmdringaddr; /* virtual address for cmd rings */
171 uint32_t *rspringaddr; /* virtual address for rsp rings */
172 uint32_t missbufcnt; /* keep track of buffers to post */
173 struct list_head postbufq;
174 uint16_t postbufq_cnt; /* current length of queue */
175 uint16_t postbufq_max; /* max length */
176 struct list_head iocb_continueq;
177 uint16_t iocb_continueq_cnt; /* current length of queue */
178 uint16_t iocb_continueq_max; /* max length */
179 struct list_head iocb_continue_saveq;
180
181 struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK];
182 uint32_t num_mask; /* number of mask entries in prt array */
183 void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *,
184 struct lpfc_sli_ring *, struct lpfc_iocbq *);
185
186 struct lpfc_sli_ring_stat stats; /* SLI statistical info */
187
188 /* cmd ring available */
189 void (*lpfc_sli_cmd_available) (struct lpfc_hba *,
190 struct lpfc_sli_ring *);
191 };
192
193 /* Structure used for configuring rings to a specific profile or rctl / type */
194 struct lpfc_hbq_init {
195 uint32_t rn; /* Receive buffer notification */
196 uint32_t entry_count; /* max # of entries in HBQ */
197 uint32_t headerLen; /* 0 if not profile 4 or 5 */
198 uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */
199 uint32_t profile; /* Selection profile 0=all, 7=logentry */
200 uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001,
201 * ring2=b0100 */
202 uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */
203
204 uint32_t seqlenoff;
205 uint32_t maxlen;
206 uint32_t seqlenbcnt;
207 uint32_t cmdcodeoff;
208 uint32_t cmdmatch[8];
209 uint32_t mask_count; /* number of mask entries in prt array */
210 struct hbq_mask hbqMasks[6];
211
212 /* Non-config rings fields to keep track of buffer allocations */
213 uint32_t buffer_count; /* number of buffers allocated */
214 uint32_t init_count; /* number to allocate when initialized */
215 uint32_t add_count; /* number to allocate when starved */
216 } ;
217
218 /* Structure used to hold SLI statistical counters and info */
219 struct lpfc_sli_stat {
220 uint64_t mbox_stat_err; /* Mbox cmds completed status error */
221 uint64_t mbox_cmd; /* Mailbox commands issued */
222 uint64_t sli_intr; /* Count of Host Attention interrupts */
223 uint32_t err_attn_event; /* Error Attn event counters */
224 uint32_t link_event; /* Link event counters */
225 uint32_t mbox_event; /* Mailbox event counters */
226 uint32_t mbox_busy; /* Mailbox cmd busy */
227 };
228
229 /* Structure to store link status values when port stats are reset */
230 struct lpfc_lnk_stat {
231 uint32_t link_failure_count;
232 uint32_t loss_of_sync_count;
233 uint32_t loss_of_signal_count;
234 uint32_t prim_seq_protocol_err_count;
235 uint32_t invalid_tx_word_count;
236 uint32_t invalid_crc_count;
237 uint32_t error_frames;
238 uint32_t link_events;
239 };
240
241 /* Structure used to hold SLI information */
242 struct lpfc_sli {
243 uint32_t num_rings;
244 uint32_t sli_flag;
245
246 /* Additional sli_flags */
247 #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */
248 #define LPFC_SLI_ACTIVE 0x200 /* SLI in firmware is active */
249 #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */
250 #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */
251 #define LPFC_MENLO_MAINT 0x1000 /* need for menl fw download */
252 #define LPFC_SLI_ASYNC_MBX_BLK 0x2000 /* Async mailbox is blocked */
253
254 struct lpfc_sli_ring ring[LPFC_MAX_RING];
255 int fcp_ring; /* ring used for FCP initiator commands */
256 int next_ring;
257
258 int extra_ring; /* extra ring used for other protocols */
259
260 struct lpfc_sli_stat slistat; /* SLI statistical info */
261 struct list_head mboxq;
262 uint16_t mboxq_cnt; /* current length of queue */
263 uint16_t mboxq_max; /* max length */
264 LPFC_MBOXQ_t *mbox_active; /* active mboxq information */
265 struct list_head mboxq_cmpl;
266
267 struct timer_list mbox_tmo; /* Hold clk to timeout active mbox
268 cmd */
269
270 #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024
271 struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */
272 size_t iocbq_lookup_len; /* current lengs of the array */
273 uint16_t last_iotag; /* last allocated IOTAG */
274 unsigned long stats_start; /* in seconds */
275 struct lpfc_lnk_stat lnk_stat_offsets;
276 };
277
278 #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox
279 command */
280 #define LPFC_MBOX_SLI4_CONFIG_TMO 60 /* Sec tmo for outstanding mbox
281 command */
282 #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write
283 * or erase cmds. This is especially
284 * long because of the potential of
285 * multiple flash erases that can be
286 * spawned.
287 */
288
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