1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
|
/*
* Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
* All rights reserved
* www.brocade.com
*
* Linux driver for Brocade Fibre Channel Host Bus Adapter.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License (GPL) Version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#ifndef __BFA_FCPIM_H__
#define __BFA_FCPIM_H__
#include "bfa.h"
#include "bfa_svc.h"
#include "bfi_ms.h"
#include "bfa_defs_svc.h"
#include "bfa_cs.h"
/* FCP module related definitions */
#define BFA_IO_MAX BFI_IO_MAX
#define BFA_FWTIO_MAX 2000
struct bfa_fcp_mod_s;
struct bfa_iotag_s {
struct list_head qe; /* queue element */
u16 tag; /* FW IO tag */
};
struct bfa_itn_s {
bfa_isr_func_t isr;
};
void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m));
void bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m);
void bfa_iotag_attach(struct bfa_fcp_mod_s *fcp);
void bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw);
#define BFA_FCP_MOD(_hal) (&(_hal)->modules.fcp_mod)
#define BFA_MEM_FCP_KVA(__bfa) (&(BFA_FCP_MOD(__bfa)->kva_seg))
#define BFA_IOTAG_FROM_TAG(_fcp, _tag) \
(&(_fcp)->iotag_arr[(_tag & BFA_IOIM_IOTAG_MASK)])
#define BFA_ITN_FROM_TAG(_fcp, _tag) \
((_fcp)->itn_arr + ((_tag) & ((_fcp)->num_itns - 1)))
#define BFA_SNSINFO_FROM_TAG(_fcp, _tag) \
bfa_mem_get_dmabuf_kva(_fcp, (_tag & BFA_IOIM_IOTAG_MASK), \
BFI_IOIM_SNSLEN)
#define BFA_ITNIM_MIN 32
#define BFA_ITNIM_MAX 1024
#define BFA_IOIM_MIN 8
#define BFA_IOIM_MAX 2000
#define BFA_TSKIM_MIN 4
#define BFA_TSKIM_MAX 512
#define BFA_FCPIM_PATHTOV_DEF (30 * 1000) /* in millisecs */
#define BFA_FCPIM_PATHTOV_MAX (90 * 1000) /* in millisecs */
#define bfa_itnim_ioprofile_update(__itnim, __index) \
(__itnim->ioprofile.iocomps[__index]++)
#define BFA_IOIM_RETRY_TAG_OFFSET 11
#define BFA_IOIM_IOTAG_MASK 0x07ff /* 2K IOs */
#define BFA_IOIM_RETRY_MAX 7
/* Buckets are are 512 bytes to 2MB */
static inline u32
bfa_ioim_get_index(u32 n) {
int pos = 0;
if (n >= (1UL)<<22)
return BFA_IOBUCKET_MAX - 1;
n >>= 8;
if (n >= (1UL)<<16) {
n >>= 16;
pos += 16;
}
if (n >= 1 << 8) {
n >>= 8;
pos += 8;
}
if (n >= 1 << 4) {
n >>= 4;
pos += 4;
}
if (n >= 1 << 2) {
n >>= 2;
pos += 2;
}
if (n >= 1 << 1)
pos += 1;
return (n == 0) ? (0) : pos;
}
/*
* forward declarations
*/
struct bfa_ioim_s;
struct bfa_tskim_s;
struct bfad_ioim_s;
struct bfad_tskim_s;
typedef void (*bfa_fcpim_profile_t) (struct bfa_ioim_s *ioim);
struct bfa_fcpim_s {
struct bfa_s *bfa;
struct bfa_fcp_mod_s *fcp;
struct bfa_itnim_s *itnim_arr;
struct bfa_ioim_s *ioim_arr;
struct bfa_ioim_sp_s *ioim_sp_arr;
struct bfa_tskim_s *tskim_arr;
int num_itnims;
int num_tskim_reqs;
u32 path_tov;
u16 q_depth;
u8 reqq; /* Request queue to be used */
struct list_head itnim_q; /* queue of active itnim */
struct list_head ioim_resfree_q; /* IOs waiting for f/w */
struct list_head ioim_comp_q; /* IO global comp Q */
struct list_head tskim_free_q;
struct list_head tskim_unused_q; /* Unused tskim Q */
u32 ios_active; /* current active IOs */
u32 delay_comp;
struct bfa_fcpim_del_itn_stats_s del_itn_stats;
bfa_boolean_t ioredirect;
bfa_boolean_t io_profile;
u32 io_profile_start_time;
bfa_fcpim_profile_t profile_comp;
bfa_fcpim_profile_t profile_start;
};
/* Max FCP dma segs required */
#define BFA_FCP_DMA_SEGS BFI_IOIM_SNSBUF_SEGS
struct bfa_fcp_mod_s {
struct bfa_s *bfa;
struct list_head iotag_ioim_free_q; /* free IO resources */
struct list_head iotag_tio_free_q; /* free IO resources */
struct list_head iotag_unused_q; /* unused IO resources*/
struct bfa_iotag_s *iotag_arr;
struct bfa_itn_s *itn_arr;
int max_ioim_reqs;
int num_ioim_reqs;
int num_fwtio_reqs;
int num_itns;
struct bfa_dma_s snsbase[BFA_FCP_DMA_SEGS];
struct bfa_fcpim_s fcpim;
struct bfa_mem_dma_s dma_seg[BFA_FCP_DMA_SEGS];
struct bfa_mem_kva_s kva_seg;
int throttle_update_required;
};
/*
* BFA IO (initiator mode)
*/
struct bfa_ioim_s {
struct list_head qe; /* queue elememt */
bfa_sm_t sm; /* BFA ioim state machine */
struct bfa_s *bfa; /* BFA module */
struct bfa_fcpim_s *fcpim; /* parent fcpim module */
struct bfa_itnim_s *itnim; /* i-t-n nexus for this IO */
struct bfad_ioim_s *dio; /* driver IO handle */
u16 iotag; /* FWI IO tag */
u16 abort_tag; /* unqiue abort request tag */
u16 nsges; /* number of SG elements */
u16 nsgpgs; /* number of SG pages */
struct bfa_sgpg_s *sgpg; /* first SG page */
struct list_head sgpg_q; /* allocated SG pages */
struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
bfa_cb_cbfn_t io_cbfn; /* IO completion handler */
struct bfa_ioim_sp_s *iosp; /* slow-path IO handling */
u8 reqq; /* Request queue for I/O */
u8 mode; /* IO is passthrough or not */
u64 start_time; /* IO's Profile start val */
};
struct bfa_ioim_sp_s {
struct bfi_msg_s comp_rspmsg; /* IO comp f/w response */
struct bfa_sgpg_wqe_s sgpg_wqe; /* waitq elem for sgpg */
struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
bfa_boolean_t abort_explicit; /* aborted by OS */
struct bfa_tskim_s *tskim; /* Relevant TM cmd */
};
/*
* BFA Task management command (initiator mode)
*/
struct bfa_tskim_s {
struct list_head qe;
bfa_sm_t sm;
struct bfa_s *bfa; /* BFA module */
struct bfa_fcpim_s *fcpim; /* parent fcpim module */
struct bfa_itnim_s *itnim; /* i-t-n nexus for this IO */
struct bfad_tskim_s *dtsk; /* driver task mgmt cmnd */
bfa_boolean_t notify; /* notify itnim on TM comp */
struct scsi_lun lun; /* lun if applicable */
enum fcp_tm_cmnd tm_cmnd; /* task management command */
u16 tsk_tag; /* FWI IO tag */
u8 tsecs; /* timeout in seconds */
struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
struct list_head io_q; /* queue of affected IOs */
struct bfa_wc_s wc; /* waiting counter */
struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
enum bfi_tskim_status tsk_status; /* TM status */
};
/*
* BFA i-t-n (initiator mode)
*/
struct bfa_itnim_s {
struct list_head qe; /* queue element */
bfa_sm_t sm; /* i-t-n im BFA state machine */
struct bfa_s *bfa; /* bfa instance */
struct bfa_rport_s *rport; /* bfa rport */
void *ditn; /* driver i-t-n structure */
struct bfi_mhdr_s mhdr; /* pre-built mhdr */
u8 msg_no; /* itnim/rport firmware handle */
u8 reqq; /* CQ for requests */
struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
struct list_head pending_q; /* queue of pending IO requests */
struct list_head io_q; /* queue of active IO requests */
struct list_head io_cleanup_q; /* IO being cleaned up */
struct list_head tsk_q; /* queue of active TM commands */
struct list_head delay_comp_q; /* queue of failed inflight cmds */
bfa_boolean_t seq_rec; /* SQER supported */
bfa_boolean_t is_online; /* itnim is ONLINE for IO */
bfa_boolean_t iotov_active; /* IO TOV timer is active */
struct bfa_wc_s wc; /* waiting counter */
struct bfa_timer_s timer; /* pending IO TOV */
struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
struct bfa_fcpim_s *fcpim; /* fcpim module */
struct bfa_itnim_iostats_s stats;
struct bfa_itnim_ioprofile_s ioprofile;
};
#define bfa_itnim_is_online(_itnim) ((_itnim)->is_online)
#define BFA_FCPIM(_hal) (&(_hal)->modules.fcp_mod.fcpim)
#define BFA_IOIM_TAG_2_ID(_iotag) ((_iotag) & BFA_IOIM_IOTAG_MASK)
#define BFA_IOIM_FROM_TAG(_fcpim, _iotag) \
(&fcpim->ioim_arr[(_iotag & BFA_IOIM_IOTAG_MASK)])
#define BFA_TSKIM_FROM_TAG(_fcpim, _tmtag) \
(&fcpim->tskim_arr[_tmtag & (fcpim->num_tskim_reqs - 1)])
#define bfa_io_profile_start_time(_bfa) \
((_bfa)->modules.fcp_mod.fcpim.io_profile_start_time)
#define bfa_fcpim_get_io_profile(_bfa) \
((_bfa)->modules.fcp_mod.fcpim.io_profile)
#define bfa_ioim_update_iotag(__ioim) do { \
uint16_t k = (__ioim)->iotag >> BFA_IOIM_RETRY_TAG_OFFSET; \
k++; (__ioim)->iotag &= BFA_IOIM_IOTAG_MASK; \
(__ioim)->iotag |= k << BFA_IOIM_RETRY_TAG_OFFSET; \
} while (0)
static inline bfa_boolean_t
bfa_ioim_maxretry_reached(struct bfa_ioim_s *ioim)
{
uint16_t k = ioim->iotag >> BFA_IOIM_RETRY_TAG_OFFSET;
if (k < BFA_IOIM_RETRY_MAX)
return BFA_FALSE;
return BFA_TRUE;
}
/*
* function prototypes
*/
void bfa_ioim_attach(struct bfa_fcpim_s *fcpim);
void bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
void bfa_ioim_good_comp_isr(struct bfa_s *bfa,
struct bfi_msg_s *msg);
void bfa_ioim_cleanup(struct bfa_ioim_s *ioim);
void bfa_ioim_cleanup_tm(struct
|