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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
9413afff | 4 | * Copyright (C) 2004-2007 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e JB |
6 | * www.emulex.com * |
7 | * * | |
8 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
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. * | |
dea3101e JB |
19 | *******************************************************************/ |
20 | ||
dea3101e JB |
21 | /* forward declaration for LPFC_IOCB_t's use */ |
22 | struct lpfc_hba; | |
2e0fef85 | 23 | struct lpfc_vport; |
dea3101e JB |
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, | |
dea3101e JB |
29 | LPFC_CTX_HOST |
30 | } lpfc_ctx_cmd; | |
31 | ||
32 | /* This structure is used to handle IOCB requests / responses */ | |
33 | struct lpfc_iocbq { | |
34 | /* lpfc_iocbqs are used in double linked lists */ | |
35 | struct list_head list; | |
604a3e30 JB |
36 | uint16_t iotag; /* pre-assigned IO tag */ |
37 | uint16_t rsvd1; | |
38 | ||
dea3101e JB |
39 | IOCB_t iocb; /* IOCB cmd */ |
40 | uint8_t retry; /* retry counter for IOCB cmd - if needed */ | |
41 | uint8_t iocb_flag; | |
07951076 JS |
42 | #define LPFC_IO_LIBDFC 1 /* libdfc iocb */ |
43 | #define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */ | |
44 | #define LPFC_IO_FCP 4 /* FCP command -- iocbq in scsi_buf */ | |
45 | #define LPFC_DRIVER_ABORTED 8 /* driver aborted this request */ | |
92d7f7b0 | 46 | #define LPFC_IO_FABRIC 0x10 /* Iocb send using fabric scheduler */ |
0ff10d46 | 47 | #define LPFC_DELAY_MEM_FREE 0x20 /* Defer free'ing of FC data */ |
dea3101e JB |
48 | |
49 | uint8_t abort_count; | |
50 | uint8_t rsvd2; | |
51 | uint32_t drvrTimeout; /* driver timeout in seconds */ | |
2e0fef85 | 52 | struct lpfc_vport *vport;/* virtual port pointer */ |
dea3101e JB |
53 | void *context1; /* caller context information */ |
54 | void *context2; /* caller context information */ | |
55 | void *context3; /* caller context information */ | |
56 | union { | |
51ef4c26 JS |
57 | wait_queue_head_t *wait_queue; |
58 | struct lpfc_iocbq *rsp_iocb; | |
59 | struct lpfcMboxq *mbox; | |
60 | struct lpfc_nodelist *ndlp; | |
dea3101e JB |
61 | } context_un; |
62 | ||
92d7f7b0 JS |
63 | void (*fabric_iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, |
64 | struct lpfc_iocbq *); | |
dea3101e JB |
65 | void (*iocb_cmpl) (struct lpfc_hba *, struct lpfc_iocbq *, |
66 | struct lpfc_iocbq *); | |
67 | ||
68 | }; | |
69 | ||
70 | #define SLI_IOCB_RET_IOCB 1 /* Return IOCB if cmd ring full */ | |
dea3101e JB |
71 | |
72 | #define IOCB_SUCCESS 0 | |
73 | #define IOCB_BUSY 1 | |
74 | #define IOCB_ERROR 2 | |
75 | #define IOCB_TIMEDOUT 3 | |
76 | ||
858c9f6c JS |
77 | #define LPFC_MBX_WAKE 1 |
78 | #define LPFC_MBX_IMED_UNREG 2 | |
7054a606 | 79 | |
dea3101e JB |
80 | typedef struct lpfcMboxq { |
81 | /* MBOXQs are used in single linked lists */ | |
82 | struct list_head list; /* ptr to next mailbox command */ | |
83 | MAILBOX_t mb; /* Mailbox cmd */ | |
2e0fef85 | 84 | struct lpfc_vport *vport;/* virutal port pointer */ |
dea3101e JB |
85 | void *context1; /* caller context information */ |
86 | void *context2; /* caller context information */ | |
87 | ||
88 | void (*mbox_cmpl) (struct lpfc_hba *, struct lpfcMboxq *); | |
7054a606 | 89 | uint8_t mbox_flag; |
dea3101e JB |
90 | |
91 | } LPFC_MBOXQ_t; | |
92 | ||
93 | #define MBX_POLL 1 /* poll mailbox till command done, then | |
94 | return */ | |
95 | #define MBX_NOWAIT 2 /* issue command then return immediately */ | |
dea3101e JB |
96 | |
97 | #define LPFC_MAX_RING_MASK 4 /* max num of rctl/type masks allowed per | |
98 | ring */ | |
99 | #define LPFC_MAX_RING 4 /* max num of SLI rings used by driver */ | |
100 | ||
101 | struct lpfc_sli_ring; | |
102 | ||
103 | struct lpfc_sli_ring_mask { | |
104 | uint8_t profile; /* profile associated with ring */ | |
105 | uint8_t rctl; /* rctl / type pair configured for ring */ | |
106 | uint8_t type; /* rctl / type pair configured for ring */ | |
107 | uint8_t rsvd; | |
108 | /* rcv'd unsol event */ | |
109 | void (*lpfc_sli_rcv_unsol_event) (struct lpfc_hba *, | |
110 | struct lpfc_sli_ring *, | |
111 | struct lpfc_iocbq *); | |
112 | }; | |
113 | ||
114 | ||
115 | /* Structure used to hold SLI statistical counters and info */ | |
116 | struct lpfc_sli_ring_stat { | |
117 | uint64_t iocb_event; /* IOCB event counters */ | |
118 | uint64_t iocb_cmd; /* IOCB cmd issued */ | |
119 | uint64_t iocb_rsp; /* IOCB rsp received */ | |
120 | uint64_t iocb_cmd_delay; /* IOCB cmd ring delay */ | |
121 | uint64_t iocb_cmd_full; /* IOCB cmd ring full */ | |
122 | uint64_t iocb_cmd_empty; /* IOCB cmd ring is now empty */ | |
123 | uint64_t iocb_rsp_full; /* IOCB rsp ring full */ | |
124 | }; | |
125 | ||
126 | /* Structure used to hold SLI ring information */ | |
127 | struct lpfc_sli_ring { | |
128 | uint16_t flag; /* ring flags */ | |
129 | #define LPFC_DEFERRED_RING_EVENT 0x001 /* Deferred processing a ring event */ | |
130 | #define LPFC_CALL_RING_AVAILABLE 0x002 /* indicates cmd was full */ | |
dea3101e | 131 | #define LPFC_STOP_IOCB_EVENT 0x020 /* Stop processing IOCB cmds event */ |
dea3101e JB |
132 | uint16_t abtsiotag; /* tracks next iotag to use for ABTS */ |
133 | ||
134 | uint32_t local_getidx; /* last available cmd index (from cmdGetInx) */ | |
135 | uint32_t next_cmdidx; /* next_cmd index */ | |
f91b392c JSEC |
136 | uint32_t rspidx; /* current index in response ring */ |
137 | uint32_t cmdidx; /* current index in command ring */ | |
dea3101e JB |
138 | uint8_t rsvd; |
139 | uint8_t ringno; /* ring number */ | |
dea3101e JB |
140 | uint16_t numCiocb; /* number of command iocb's per ring */ |
141 | uint16_t numRiocb; /* number of rsp iocb's per ring */ | |
ed957684 | 142 | uint16_t sizeCiocb; /* Size of command iocb's in this ring */ |
311464ec | 143 | uint16_t sizeRiocb; /* Size of response iocb's in this ring */ |
dea3101e JB |
144 | |
145 | uint32_t fast_iotag; /* max fastlookup based iotag */ | |
146 | uint32_t iotag_ctr; /* keeps track of the next iotag to use */ | |
147 | uint32_t iotag_max; /* max iotag value to use */ | |
dea3101e JB |
148 | struct list_head txq; |
149 | uint16_t txq_cnt; /* current length of queue */ | |
150 | uint16_t txq_max; /* max length */ | |
151 | struct list_head txcmplq; | |
152 | uint16_t txcmplq_cnt; /* current length of queue */ | |
153 | uint16_t txcmplq_max; /* max length */ | |
154 | uint32_t *cmdringaddr; /* virtual address for cmd rings */ | |
155 | uint32_t *rspringaddr; /* virtual address for rsp rings */ | |
156 | uint32_t missbufcnt; /* keep track of buffers to post */ | |
157 | struct list_head postbufq; | |
158 | uint16_t postbufq_cnt; /* current length of queue */ | |
159 | uint16_t postbufq_max; /* max length */ | |
160 | struct list_head iocb_continueq; | |
161 | uint16_t iocb_continueq_cnt; /* current length of queue */ | |
162 | uint16_t iocb_continueq_max; /* max length */ | |
163 | ||
164 | struct lpfc_sli_ring_mask prt[LPFC_MAX_RING_MASK]; | |
165 | uint32_t num_mask; /* number of mask entries in prt array */ | |
57127f15 JS |
166 | void (*lpfc_sli_rcv_async_status) (struct lpfc_hba *, |
167 | struct lpfc_sli_ring *, struct lpfc_iocbq *); | |
dea3101e JB |
168 | |
169 | struct lpfc_sli_ring_stat stats; /* SLI statistical info */ | |
170 | ||
171 | /* cmd ring available */ | |
172 | void (*lpfc_sli_cmd_available) (struct lpfc_hba *, | |
173 | struct lpfc_sli_ring *); | |
174 | }; | |
175 | ||
ed957684 JS |
176 | /* Structure used for configuring rings to a specific profile or rctl / type */ |
177 | struct lpfc_hbq_init { | |
178 | uint32_t rn; /* Receive buffer notification */ | |
92d7f7b0 | 179 | uint32_t entry_count; /* max # of entries in HBQ */ |
ed957684 JS |
180 | uint32_t headerLen; /* 0 if not profile 4 or 5 */ |
181 | uint32_t logEntry; /* Set to 1 if this HBQ used for LogEntry */ | |
182 | uint32_t profile; /* Selection profile 0=all, 7=logentry */ | |
183 | uint32_t ring_mask; /* Binds HBQ to a ring e.g. Ring0=b0001, | |
184 | * ring2=b0100 */ | |
185 | uint32_t hbq_index; /* index of this hbq in ring .HBQs[] */ | |
186 | ||
187 | uint32_t seqlenoff; | |
188 | uint32_t maxlen; | |
189 | uint32_t seqlenbcnt; | |
190 | uint32_t cmdcodeoff; | |
191 | uint32_t cmdmatch[8]; | |
192 | uint32_t mask_count; /* number of mask entries in prt array */ | |
193 | struct hbq_mask hbqMasks[6]; | |
92d7f7b0 JS |
194 | |
195 | /* Non-config rings fields to keep track of buffer allocations */ | |
196 | uint32_t buffer_count; /* number of buffers allocated */ | |
197 | uint32_t init_count; /* number to allocate when initialized */ | |
198 | uint32_t add_count; /* number to allocate when starved */ | |
ed957684 JS |
199 | } ; |
200 | ||
dea3101e JB |
201 | /* Structure used to hold SLI statistical counters and info */ |
202 | struct lpfc_sli_stat { | |
203 | uint64_t mbox_stat_err; /* Mbox cmds completed status error */ | |
204 | uint64_t mbox_cmd; /* Mailbox commands issued */ | |
205 | uint64_t sli_intr; /* Count of Host Attention interrupts */ | |
206 | uint32_t err_attn_event; /* Error Attn event counters */ | |
207 | uint32_t link_event; /* Link event counters */ | |
208 | uint32_t mbox_event; /* Mailbox event counters */ | |
209 | uint32_t mbox_busy; /* Mailbox cmd busy */ | |
210 | }; | |
211 | ||
64ba8818 JS |
212 | /* Structure to store link status values when port stats are reset */ |
213 | struct lpfc_lnk_stat { | |
214 | uint32_t link_failure_count; | |
215 | uint32_t loss_of_sync_count; | |
216 | uint32_t loss_of_signal_count; | |
217 | uint32_t prim_seq_protocol_err_count; | |
218 | uint32_t invalid_tx_word_count; | |
219 | uint32_t invalid_crc_count; | |
220 | uint32_t error_frames; | |
221 | uint32_t link_events; | |
222 | }; | |
223 | ||
dea3101e JB |
224 | /* Structure used to hold SLI information */ |
225 | struct lpfc_sli { | |
226 | uint32_t num_rings; | |
227 | uint32_t sli_flag; | |
228 | ||
229 | /* Additional sli_flags */ | |
230 | #define LPFC_SLI_MBOX_ACTIVE 0x100 /* HBA mailbox is currently active */ | |
231 | #define LPFC_SLI2_ACTIVE 0x200 /* SLI2 overlay in firmware is active */ | |
232 | #define LPFC_PROCESS_LA 0x400 /* Able to process link attention */ | |
2e0fef85 | 233 | #define LPFC_BLOCK_MGMT_IO 0x800 /* Don't allow mgmt mbx or iocb cmds */ |
dea3101e JB |
234 | |
235 | struct lpfc_sli_ring ring[LPFC_MAX_RING]; | |
236 | int fcp_ring; /* ring used for FCP initiator commands */ | |
237 | int next_ring; | |
238 | ||
a4bc3379 | 239 | int extra_ring; /* extra ring used for other protocols */ |
dea3101e JB |
240 | |
241 | struct lpfc_sli_stat slistat; /* SLI statistical info */ | |
242 | struct list_head mboxq; | |
243 | uint16_t mboxq_cnt; /* current length of queue */ | |
244 | uint16_t mboxq_max; /* max length */ | |
245 | LPFC_MBOXQ_t *mbox_active; /* active mboxq information */ | |
92d7f7b0 | 246 | struct list_head mboxq_cmpl; |
dea3101e JB |
247 | |
248 | struct timer_list mbox_tmo; /* Hold clk to timeout active mbox | |
249 | cmd */ | |
250 | ||
604a3e30 JB |
251 | #define LPFC_IOCBQ_LOOKUP_INCREMENT 1024 |
252 | struct lpfc_iocbq ** iocbq_lookup; /* array to lookup IOCB by IOTAG */ | |
253 | size_t iocbq_lookup_len; /* current lengs of the array */ | |
254 | uint16_t last_iotag; /* last allocated IOTAG */ | |
64ba8818 JS |
255 | unsigned long stats_start; /* in seconds */ |
256 | struct lpfc_lnk_stat lnk_stat_offsets; | |
dea3101e JB |
257 | }; |
258 | ||
dea3101e JB |
259 | #define LPFC_MBOX_TMO 30 /* Sec tmo for outstanding mbox |
260 | command */ | |
a309a6b6 JS |
261 | #define LPFC_MBOX_TMO_FLASH_CMD 300 /* Sec tmo for outstanding FLASH write |
262 | * or erase cmds. This is especially | |
263 | * long because of the potential of | |
264 | * multiple flash erases that can be | |
265 | * spawned. | |
266 | */ |