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x86/mm/pat: Don't report PAT on CPUs that don't support it
[linux/fpc-iii.git] / drivers / scsi / bfa / bfa_fcpim.c
blob20982e7cdd818fa064e614385dfd93b8713d3f16
1 /*
2 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
3 * Copyright (c) 2014- QLogic Corporation.
4 * All rights reserved
5 * www.qlogic.com
6 *
7 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License (GPL) Version 2 as
11 * published by the Free Software Foundation
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19 #include "bfad_drv.h"
20 #include "bfa_modules.h"
21
22 BFA_TRC_FILE(HAL, FCPIM);
23
24 /*
25 * BFA ITNIM Related definitions
26 */
27 static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim);
28 static void bfa_ioim_lm_init(struct bfa_s *bfa);
29
30 #define BFA_ITNIM_FROM_TAG(_fcpim, _tag) \
31 (((_fcpim)->itnim_arr + ((_tag) & ((_fcpim)->num_itnims - 1))))
32
33 #define bfa_fcpim_additn(__itnim) \
34 list_add_tail(&(__itnim)->qe, &(__itnim)->fcpim->itnim_q)
35 #define bfa_fcpim_delitn(__itnim) do { \
36 WARN_ON(!bfa_q_is_on_q(&(__itnim)->fcpim->itnim_q, __itnim)); \
37 bfa_itnim_update_del_itn_stats(__itnim); \
38 list_del(&(__itnim)->qe); \
39 WARN_ON(!list_empty(&(__itnim)->io_q)); \
40 WARN_ON(!list_empty(&(__itnim)->io_cleanup_q)); \
41 WARN_ON(!list_empty(&(__itnim)->pending_q)); \
42 } while (0)
43
44 #define bfa_itnim_online_cb(__itnim) do { \
45 if ((__itnim)->bfa->fcs) \
46 bfa_cb_itnim_online((__itnim)->ditn); \
47 else { \
48 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \
49 __bfa_cb_itnim_online, (__itnim)); \
50 } \
51 } while (0)
52
53 #define bfa_itnim_offline_cb(__itnim) do { \
54 if ((__itnim)->bfa->fcs) \
55 bfa_cb_itnim_offline((__itnim)->ditn); \
56 else { \
57 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \
58 __bfa_cb_itnim_offline, (__itnim)); \
59 } \
60 } while (0)
61
62 #define bfa_itnim_sler_cb(__itnim) do { \
63 if ((__itnim)->bfa->fcs) \
64 bfa_cb_itnim_sler((__itnim)->ditn); \
65 else { \
66 bfa_cb_queue((__itnim)->bfa, &(__itnim)->hcb_qe, \
67 __bfa_cb_itnim_sler, (__itnim)); \
68 } \
69 } while (0)
70
71 enum bfa_ioim_lm_ua_status {
72 BFA_IOIM_LM_UA_RESET = 0,
73 BFA_IOIM_LM_UA_SET = 1,
74 };
75
76 /*
77 * itnim state machine event
78 */
79 enum bfa_itnim_event {
80 BFA_ITNIM_SM_CREATE = 1, /* itnim is created */
81 BFA_ITNIM_SM_ONLINE = 2, /* itnim is online */
82 BFA_ITNIM_SM_OFFLINE = 3, /* itnim is offline */
83 BFA_ITNIM_SM_FWRSP = 4, /* firmware response */
84 BFA_ITNIM_SM_DELETE = 5, /* deleting an existing itnim */
85 BFA_ITNIM_SM_CLEANUP = 6, /* IO cleanup completion */
86 BFA_ITNIM_SM_SLER = 7, /* second level error recovery */
87 BFA_ITNIM_SM_HWFAIL = 8, /* IOC h/w failure event */
88 BFA_ITNIM_SM_QRESUME = 9, /* queue space available */
89 };
90
91 /*
92 * BFA IOIM related definitions
93 */
94 #define bfa_ioim_move_to_comp_q(__ioim) do { \
95 list_del(&(__ioim)->qe); \
96 list_add_tail(&(__ioim)->qe, &(__ioim)->fcpim->ioim_comp_q); \
97 } while (0)
98
99
100 #define bfa_ioim_cb_profile_comp(__fcpim, __ioim) do { \
101 if ((__fcpim)->profile_comp) \
102 (__fcpim)->profile_comp(__ioim); \
103 } while (0)
104
105 #define bfa_ioim_cb_profile_start(__fcpim, __ioim) do { \
106 if ((__fcpim)->profile_start) \
107 (__fcpim)->profile_start(__ioim); \
108 } while (0)
109
110 /*
111 * IO state machine events
112 */
113 enum bfa_ioim_event {
114 BFA_IOIM_SM_START = 1, /* io start request from host */
115 BFA_IOIM_SM_COMP_GOOD = 2, /* io good comp, resource free */
116 BFA_IOIM_SM_COMP = 3, /* io comp, resource is free */
117 BFA_IOIM_SM_COMP_UTAG = 4, /* io comp, resource is free */
118 BFA_IOIM_SM_DONE = 5, /* io comp, resource not free */
119 BFA_IOIM_SM_FREE = 6, /* io resource is freed */
120 BFA_IOIM_SM_ABORT = 7, /* abort request from scsi stack */
121 BFA_IOIM_SM_ABORT_COMP = 8, /* abort from f/w */
122 BFA_IOIM_SM_ABORT_DONE = 9, /* abort completion from f/w */
123 BFA_IOIM_SM_QRESUME = 10, /* CQ space available to queue IO */
124 BFA_IOIM_SM_SGALLOCED = 11, /* SG page allocation successful */
125 BFA_IOIM_SM_SQRETRY = 12, /* sequence recovery retry */
126 BFA_IOIM_SM_HCB = 13, /* bfa callback complete */
127 BFA_IOIM_SM_CLEANUP = 14, /* IO cleanup from itnim */
128 BFA_IOIM_SM_TMSTART = 15, /* IO cleanup from tskim */
129 BFA_IOIM_SM_TMDONE = 16, /* IO cleanup from tskim */
130 BFA_IOIM_SM_HWFAIL = 17, /* IOC h/w failure event */
131 BFA_IOIM_SM_IOTOV = 18, /* ITN offline TOV */
132 };
133
134
135 /*
136 * BFA TSKIM related definitions
137 */
138
139 /*
140 * task management completion handling
141 */
142 #define bfa_tskim_qcomp(__tskim, __cbfn) do { \
143 bfa_cb_queue((__tskim)->bfa, &(__tskim)->hcb_qe, __cbfn, (__tskim));\
144 bfa_tskim_notify_comp(__tskim); \
145 } while (0)
146
147 #define bfa_tskim_notify_comp(__tskim) do { \
148 if ((__tskim)->notify) \
149 bfa_itnim_tskdone((__tskim)->itnim); \
150 } while (0)
151
152
153 enum bfa_tskim_event {
154 BFA_TSKIM_SM_START = 1, /* TM command start */
155 BFA_TSKIM_SM_DONE = 2, /* TM completion */
156 BFA_TSKIM_SM_QRESUME = 3, /* resume after qfull */
157 BFA_TSKIM_SM_HWFAIL = 5, /* IOC h/w failure event */
158 BFA_TSKIM_SM_HCB = 6, /* BFA callback completion */
159 BFA_TSKIM_SM_IOS_DONE = 7, /* IO and sub TM completions */
160 BFA_TSKIM_SM_CLEANUP = 8, /* TM cleanup on ITN offline */
161 BFA_TSKIM_SM_CLEANUP_DONE = 9, /* TM abort completion */
162 BFA_TSKIM_SM_UTAG = 10, /* TM completion unknown tag */
163 };
164
165 /*
166 * forward declaration for BFA ITNIM functions
167 */
168 static void bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim);
169 static bfa_boolean_t bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim);
170 static bfa_boolean_t bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim);
171 static void bfa_itnim_cleanp_comp(void *itnim_cbarg);
172 static void bfa_itnim_cleanup(struct bfa_itnim_s *itnim);
173 static void __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete);
174 static void __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete);
175 static void __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete);
176 static void bfa_itnim_iotov_online(struct bfa_itnim_s *itnim);
177 static void bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim);
178 static void bfa_itnim_iotov(void *itnim_arg);
179 static void bfa_itnim_iotov_start(struct bfa_itnim_s *itnim);
180 static void bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim);
181 static void bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim);
182
183 /*
184 * forward declaration of ITNIM state machine
185 */
186 static void bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim,
187 enum bfa_itnim_event event);
188 static void bfa_itnim_sm_created(struct bfa_itnim_s *itnim,
189 enum bfa_itnim_event event);
190 static void bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim,
191 enum bfa_itnim_event event);
192 static void bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim,
193 enum bfa_itnim_event event);
194 static void bfa_itnim_sm_online(struct bfa_itnim_s *itnim,
195 enum bfa_itnim_event event);
196 static void bfa_itnim_sm_sler(struct bfa_itnim_s *itnim,
197 enum bfa_itnim_event event);
198 static void bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim,
199 enum bfa_itnim_event event);
200 static void bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim,
201 enum bfa_itnim_event event);
202 static void bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim,
203 enum bfa_itnim_event event);
204 static void bfa_itnim_sm_offline(struct bfa_itnim_s *itnim,
205 enum bfa_itnim_event event);
206 static void bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim,
207 enum bfa_itnim_event event);
208 static void bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim,
209 enum bfa_itnim_event event);
210 static void bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim,
211 enum bfa_itnim_event event);
212 static void bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim,
213 enum bfa_itnim_event event);
214 static void bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim,
215 enum bfa_itnim_event event);
216
217 /*
218 * forward declaration for BFA IOIM functions
219 */
220 static bfa_boolean_t bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim);
221 static bfa_boolean_t bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim);
222 static bfa_boolean_t bfa_ioim_send_abort(struct bfa_ioim_s *ioim);
223 static void bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim);
224 static void __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete);
225 static void __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete);
226 static void __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete);
227 static void __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete);
228 static void __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete);
229 static bfa_boolean_t bfa_ioim_is_abortable(struct bfa_ioim_s *ioim);
230
231 /*
232 * forward declaration of BFA IO state machine
233 */
234 static void bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim,
235 enum bfa_ioim_event event);
236 static void bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim,
237 enum bfa_ioim_event event);
238 static void bfa_ioim_sm_active(struct bfa_ioim_s *ioim,
239 enum bfa_ioim_event event);
240 static void bfa_ioim_sm_abort(struct bfa_ioim_s *ioim,
241 enum bfa_ioim_event event);
242 static void bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim,
243 enum bfa_ioim_event event);
244 static void bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim,
245 enum bfa_ioim_event event);
246 static void bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim,
247 enum bfa_ioim_event event);
248 static void bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim,
249 enum bfa_ioim_event event);
250 static void bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim,
251 enum bfa_ioim_event event);
252 static void bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim,
253 enum bfa_ioim_event event);
254 static void bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim,
255 enum bfa_ioim_event event);
256 static void bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim,
257 enum bfa_ioim_event event);
258 /*
259 * forward declaration for BFA TSKIM functions
260 */
261 static void __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete);
262 static void __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete);
263 static bfa_boolean_t bfa_tskim_match_scope(struct bfa_tskim_s *tskim,
264 struct scsi_lun lun);
265 static void bfa_tskim_gather_ios(struct bfa_tskim_s *tskim);
266 static void bfa_tskim_cleanp_comp(void *tskim_cbarg);
267 static void bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim);
268 static bfa_boolean_t bfa_tskim_send(struct bfa_tskim_s *tskim);
269 static bfa_boolean_t bfa_tskim_send_abort(struct bfa_tskim_s *tskim);
270 static void bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim);
271
272 /*
273 * forward declaration of BFA TSKIM state machine
274 */
275 static void bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim,
276 enum bfa_tskim_event event);
277 static void bfa_tskim_sm_active(struct bfa_tskim_s *tskim,
278 enum bfa_tskim_event event);
279 static void bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim,
280 enum bfa_tskim_event event);
281 static void bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim,
282 enum bfa_tskim_event event);
283 static void bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim,
284 enum bfa_tskim_event event);
285 static void bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
286 enum bfa_tskim_event event);
287 static void bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim,
288 enum bfa_tskim_event event);
289 /*
290 * BFA FCP Initiator Mode module
291 */
292
293 /*
294 * Compute and return memory needed by FCP(im) module.
295 */
296 static void
297 bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len)
298 {
299 bfa_itnim_meminfo(cfg, km_len);
300
301 /*
302 * IO memory
303 */
304 *km_len += cfg->fwcfg.num_ioim_reqs *
305 (sizeof(struct bfa_ioim_s) + sizeof(struct bfa_ioim_sp_s));
306
307 /*
308 * task management command memory
309 */
310 if (cfg->fwcfg.num_tskim_reqs < BFA_TSKIM_MIN)
311 cfg->fwcfg.num_tskim_reqs = BFA_TSKIM_MIN;
312 *km_len += cfg->fwcfg.num_tskim_reqs * sizeof(struct bfa_tskim_s);
313 }
314
315
316 static void
317 bfa_fcpim_attach(struct bfa_fcp_mod_s *fcp, void *bfad,
318 struct bfa_iocfc_cfg_s *cfg, struct bfa_pcidev_s *pcidev)
319 {
320 struct bfa_fcpim_s *fcpim = &fcp->fcpim;
321 struct bfa_s *bfa = fcp->bfa;
322
323 bfa_trc(bfa, cfg->drvcfg.path_tov);
324 bfa_trc(bfa, cfg->fwcfg.num_rports);
325 bfa_trc(bfa, cfg->fwcfg.num_ioim_reqs);
326 bfa_trc(bfa, cfg->fwcfg.num_tskim_reqs);
327
328 fcpim->fcp = fcp;
329 fcpim->bfa = bfa;
330 fcpim->num_itnims = cfg->fwcfg.num_rports;
331 fcpim->num_tskim_reqs = cfg->fwcfg.num_tskim_reqs;
332 fcpim->path_tov = cfg->drvcfg.path_tov;
333 fcpim->delay_comp = cfg->drvcfg.delay_comp;
334 fcpim->profile_comp = NULL;
335 fcpim->profile_start = NULL;
336
337 bfa_itnim_attach(fcpim);
338 bfa_tskim_attach(fcpim);
339 bfa_ioim_attach(fcpim);
340 }
341
342 static void
343 bfa_fcpim_iocdisable(struct bfa_fcp_mod_s *fcp)
344 {
345 struct bfa_fcpim_s *fcpim = &fcp->fcpim;
346 struct bfa_itnim_s *itnim;
347 struct list_head *qe, *qen;
348
349 /* Enqueue unused ioim resources to free_q */
350 list_splice_tail_init(&fcpim->tskim_unused_q, &fcpim->tskim_free_q);
351
352 list_for_each_safe(qe, qen, &fcpim->itnim_q) {
353 itnim = (struct bfa_itnim_s *) qe;
354 bfa_itnim_iocdisable(itnim);
355 }
356 }
357
358 void
359 bfa_fcpim_path_tov_set(struct bfa_s *bfa, u16 path_tov)
360 {
361 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
362
363 fcpim->path_tov = path_tov * 1000;
364 if (fcpim->path_tov > BFA_FCPIM_PATHTOV_MAX)
365 fcpim->path_tov = BFA_FCPIM_PATHTOV_MAX;
366 }
367
368 u16
369 bfa_fcpim_path_tov_get(struct bfa_s *bfa)
370 {
371 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
372
373 return fcpim->path_tov / 1000;
374 }
375
376 #define bfa_fcpim_add_iostats(__l, __r, __stats) \
377 (__l->__stats += __r->__stats)
378
379 void
380 bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *lstats,
381 struct bfa_itnim_iostats_s *rstats)
382 {
383 bfa_fcpim_add_iostats(lstats, rstats, total_ios);
384 bfa_fcpim_add_iostats(lstats, rstats, qresumes);
385 bfa_fcpim_add_iostats(lstats, rstats, no_iotags);
386 bfa_fcpim_add_iostats(lstats, rstats, io_aborts);
387 bfa_fcpim_add_iostats(lstats, rstats, no_tskims);
388 bfa_fcpim_add_iostats(lstats, rstats, iocomp_ok);
389 bfa_fcpim_add_iostats(lstats, rstats, iocomp_underrun);
390 bfa_fcpim_add_iostats(lstats, rstats, iocomp_overrun);
391 bfa_fcpim_add_iostats(lstats, rstats, iocomp_aborted);
392 bfa_fcpim_add_iostats(lstats, rstats, iocomp_timedout);
393 bfa_fcpim_add_iostats(lstats, rstats, iocom_nexus_abort);
394 bfa_fcpim_add_iostats(lstats, rstats, iocom_proto_err);
395 bfa_fcpim_add_iostats(lstats, rstats, iocom_dif_err);
396 bfa_fcpim_add_iostats(lstats, rstats, iocom_sqer_needed);
397 bfa_fcpim_add_iostats(lstats, rstats, iocom_res_free);
398 bfa_fcpim_add_iostats(lstats, rstats, iocom_hostabrts);
399 bfa_fcpim_add_iostats(lstats, rstats, iocom_utags);
400 bfa_fcpim_add_iostats(lstats, rstats, io_cleanups);
401 bfa_fcpim_add_iostats(lstats, rstats, io_tmaborts);
402 bfa_fcpim_add_iostats(lstats, rstats, onlines);
403 bfa_fcpim_add_iostats(lstats, rstats, offlines);
404 bfa_fcpim_add_iostats(lstats, rstats, creates);
405 bfa_fcpim_add_iostats(lstats, rstats, deletes);
406 bfa_fcpim_add_iostats(lstats, rstats, create_comps);
407 bfa_fcpim_add_iostats(lstats, rstats, delete_comps);
408 bfa_fcpim_add_iostats(lstats, rstats, sler_events);
409 bfa_fcpim_add_iostats(lstats, rstats, fw_create);
410 bfa_fcpim_add_iostats(lstats, rstats, fw_delete);
411 bfa_fcpim_add_iostats(lstats, rstats, ioc_disabled);
412 bfa_fcpim_add_iostats(lstats, rstats, cleanup_comps);
413 bfa_fcpim_add_iostats(lstats, rstats, tm_cmnds);
414 bfa_fcpim_add_iostats(lstats, rstats, tm_fw_rsps);
415 bfa_fcpim_add_iostats(lstats, rstats, tm_success);
416 bfa_fcpim_add_iostats(lstats, rstats, tm_failures);
417 bfa_fcpim_add_iostats(lstats, rstats, tm_io_comps);
418 bfa_fcpim_add_iostats(lstats, rstats, tm_qresumes);
419 bfa_fcpim_add_iostats(lstats, rstats, tm_iocdowns);
420 bfa_fcpim_add_iostats(lstats, rstats, tm_cleanups);
421 bfa_fcpim_add_iostats(lstats, rstats, tm_cleanup_comps);
422 bfa_fcpim_add_iostats(lstats, rstats, io_comps);
423 bfa_fcpim_add_iostats(lstats, rstats, input_reqs);
424 bfa_fcpim_add_iostats(lstats, rstats, output_reqs);
425 bfa_fcpim_add_iostats(lstats, rstats, rd_throughput);
426 bfa_fcpim_add_iostats(lstats, rstats, wr_throughput);
427 }
428
429 bfa_status_t
430 bfa_fcpim_port_iostats(struct bfa_s *bfa,
431 struct bfa_itnim_iostats_s *stats, u8 lp_tag)
432 {
433 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
434 struct list_head *qe, *qen;
435 struct bfa_itnim_s *itnim;
436
437 /* accumulate IO stats from itnim */
438 memset(stats, 0, sizeof(struct bfa_itnim_iostats_s));
439 list_for_each_safe(qe, qen, &fcpim->itnim_q) {
440 itnim = (struct bfa_itnim_s *) qe;
441 if (itnim->rport->rport_info.lp_tag != lp_tag)
442 continue;
443 bfa_fcpim_add_stats(stats, &(itnim->stats));
444 }
445 return BFA_STATUS_OK;
446 }
447
448 void
449 bfa_ioim_profile_comp(struct bfa_ioim_s *ioim)
450 {
451 struct bfa_itnim_latency_s *io_lat =
452 &(ioim->itnim->ioprofile.io_latency);
453 u32 val, idx;
454
455 val = (u32)(jiffies - ioim->start_time);
456 idx = bfa_ioim_get_index(scsi_bufflen((struct scsi_cmnd *)ioim->dio));
457 bfa_itnim_ioprofile_update(ioim->itnim, idx);
458
459 io_lat->count[idx]++;
460 io_lat->min[idx] = (io_lat->min[idx] < val) ? io_lat->min[idx] : val;
461 io_lat->max[idx] = (io_lat->max[idx] > val) ? io_lat->max[idx] : val;
462 io_lat->avg[idx] += val;
463 }
464
465 void
466 bfa_ioim_profile_start(struct bfa_ioim_s *ioim)
467 {
468 ioim->start_time = jiffies;
469 }
470
471 bfa_status_t
472 bfa_fcpim_profile_on(struct bfa_s *bfa, u32 time)
473 {
474 struct bfa_itnim_s *itnim;
475 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
476 struct list_head *qe, *qen;
477
478 /* accumulate IO stats from itnim */
479 list_for_each_safe(qe, qen, &fcpim->itnim_q) {
480 itnim = (struct bfa_itnim_s *) qe;
481 bfa_itnim_clear_stats(itnim);
482 }
483 fcpim->io_profile = BFA_TRUE;
484 fcpim->io_profile_start_time = time;
485 fcpim->profile_comp = bfa_ioim_profile_comp;
486 fcpim->profile_start = bfa_ioim_profile_start;
487 return BFA_STATUS_OK;
488 }
489
490 bfa_status_t
491 bfa_fcpim_profile_off(struct bfa_s *bfa)
492 {
493 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
494 fcpim->io_profile = BFA_FALSE;
495 fcpim->io_profile_start_time = 0;
496 fcpim->profile_comp = NULL;
497 fcpim->profile_start = NULL;
498 return BFA_STATUS_OK;
499 }
500
501 u16
502 bfa_fcpim_qdepth_get(struct bfa_s *bfa)
503 {
504 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
505
506 return fcpim->q_depth;
507 }
508
509 /*
510 * BFA ITNIM module state machine functions
511 */
512
513 /*
514 * Beginning/unallocated state - no events expected.
515 */
516 static void
517 bfa_itnim_sm_uninit(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
518 {
519 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
520 bfa_trc(itnim->bfa, event);
521
522 switch (event) {
523 case BFA_ITNIM_SM_CREATE:
524 bfa_sm_set_state(itnim, bfa_itnim_sm_created);
525 itnim->is_online = BFA_FALSE;
526 bfa_fcpim_additn(itnim);
527 break;
528
529 default:
530 bfa_sm_fault(itnim->bfa, event);
531 }
532 }
533
534 /*
535 * Beginning state, only online event expected.
536 */
537 static void
538 bfa_itnim_sm_created(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
539 {
540 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
541 bfa_trc(itnim->bfa, event);
542
543 switch (event) {
544 case BFA_ITNIM_SM_ONLINE:
545 if (bfa_itnim_send_fwcreate(itnim))
546 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
547 else
548 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
549 break;
550
551 case BFA_ITNIM_SM_DELETE:
552 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
553 bfa_fcpim_delitn(itnim);
554 break;
555
556 case BFA_ITNIM_SM_HWFAIL:
557 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
558 break;
559
560 default:
561 bfa_sm_fault(itnim->bfa, event);
562 }
563 }
564
565 /*
566 * Waiting for itnim create response from firmware.
567 */
568 static void
569 bfa_itnim_sm_fwcreate(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
570 {
571 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
572 bfa_trc(itnim->bfa, event);
573
574 switch (event) {
575 case BFA_ITNIM_SM_FWRSP:
576 bfa_sm_set_state(itnim, bfa_itnim_sm_online);
577 itnim->is_online = BFA_TRUE;
578 bfa_itnim_iotov_online(itnim);
579 bfa_itnim_online_cb(itnim);
580 break;
581
582 case BFA_ITNIM_SM_DELETE:
583 bfa_sm_set_state(itnim, bfa_itnim_sm_delete_pending);
584 break;
585
586 case BFA_ITNIM_SM_OFFLINE:
587 if (bfa_itnim_send_fwdelete(itnim))
588 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
589 else
590 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull);
591 break;
592
593 case BFA_ITNIM_SM_HWFAIL:
594 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
595 break;
596
597 default:
598 bfa_sm_fault(itnim->bfa, event);
599 }
600 }
601
602 static void
603 bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s *itnim,
604 enum bfa_itnim_event event)
605 {
606 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
607 bfa_trc(itnim->bfa, event);
608
609 switch (event) {
610 case BFA_ITNIM_SM_QRESUME:
611 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
612 bfa_itnim_send_fwcreate(itnim);
613 break;
614
615 case BFA_ITNIM_SM_DELETE:
616 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
617 bfa_reqq_wcancel(&itnim->reqq_wait);
618 bfa_fcpim_delitn(itnim);
619 break;
620
621 case BFA_ITNIM_SM_OFFLINE:
622 bfa_sm_set_state(itnim, bfa_itnim_sm_offline);
623 bfa_reqq_wcancel(&itnim->reqq_wait);
624 bfa_itnim_offline_cb(itnim);
625 break;
626
627 case BFA_ITNIM_SM_HWFAIL:
628 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
629 bfa_reqq_wcancel(&itnim->reqq_wait);
630 break;
631
632 default:
633 bfa_sm_fault(itnim->bfa, event);
634 }
635 }
636
637 /*
638 * Waiting for itnim create response from firmware, a delete is pending.
639 */
640 static void
641 bfa_itnim_sm_delete_pending(struct bfa_itnim_s *itnim,
642 enum bfa_itnim_event event)
643 {
644 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
645 bfa_trc(itnim->bfa, event);
646
647 switch (event) {
648 case BFA_ITNIM_SM_FWRSP:
649 if (bfa_itnim_send_fwdelete(itnim))
650 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
651 else
652 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
653 break;
654
655 case BFA_ITNIM_SM_HWFAIL:
656 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
657 bfa_fcpim_delitn(itnim);
658 break;
659
660 default:
661 bfa_sm_fault(itnim->bfa, event);
662 }
663 }
664
665 /*
666 * Online state - normal parking state.
667 */
668 static void
669 bfa_itnim_sm_online(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
670 {
671 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
672 bfa_trc(itnim->bfa, event);
673
674 switch (event) {
675 case BFA_ITNIM_SM_OFFLINE:
676 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline);
677 itnim->is_online = BFA_FALSE;
678 bfa_itnim_iotov_start(itnim);
679 bfa_itnim_cleanup(itnim);
680 break;
681
682 case BFA_ITNIM_SM_DELETE:
683 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
684 itnim->is_online = BFA_FALSE;
685 bfa_itnim_cleanup(itnim);
686 break;
687
688 case BFA_ITNIM_SM_SLER:
689 bfa_sm_set_state(itnim, bfa_itnim_sm_sler);
690 itnim->is_online = BFA_FALSE;
691 bfa_itnim_iotov_start(itnim);
692 bfa_itnim_sler_cb(itnim);
693 break;
694
695 case BFA_ITNIM_SM_HWFAIL:
696 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
697 itnim->is_online = BFA_FALSE;
698 bfa_itnim_iotov_start(itnim);
699 bfa_itnim_iocdisable_cleanup(itnim);
700 break;
701
702 default:
703 bfa_sm_fault(itnim->bfa, event);
704 }
705 }
706
707 /*
708 * Second level error recovery need.
709 */
710 static void
711 bfa_itnim_sm_sler(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
712 {
713 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
714 bfa_trc(itnim->bfa, event);
715
716 switch (event) {
717 case BFA_ITNIM_SM_OFFLINE:
718 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_offline);
719 bfa_itnim_cleanup(itnim);
720 break;
721
722 case BFA_ITNIM_SM_DELETE:
723 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
724 bfa_itnim_cleanup(itnim);
725 bfa_itnim_iotov_delete(itnim);
726 break;
727
728 case BFA_ITNIM_SM_HWFAIL:
729 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
730 bfa_itnim_iocdisable_cleanup(itnim);
731 break;
732
733 default:
734 bfa_sm_fault(itnim->bfa, event);
735 }
736 }
737
738 /*
739 * Going offline. Waiting for active IO cleanup.
740 */
741 static void
742 bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s *itnim,
743 enum bfa_itnim_event event)
744 {
745 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
746 bfa_trc(itnim->bfa, event);
747
748 switch (event) {
749 case BFA_ITNIM_SM_CLEANUP:
750 if (bfa_itnim_send_fwdelete(itnim))
751 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
752 else
753 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete_qfull);
754 break;
755
756 case BFA_ITNIM_SM_DELETE:
757 bfa_sm_set_state(itnim, bfa_itnim_sm_cleanup_delete);
758 bfa_itnim_iotov_delete(itnim);
759 break;
760
761 case BFA_ITNIM_SM_HWFAIL:
762 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
763 bfa_itnim_iocdisable_cleanup(itnim);
764 bfa_itnim_offline_cb(itnim);
765 break;
766
767 case BFA_ITNIM_SM_SLER:
768 break;
769
770 default:
771 bfa_sm_fault(itnim->bfa, event);
772 }
773 }
774
775 /*
776 * Deleting itnim. Waiting for active IO cleanup.
777 */
778 static void
779 bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s *itnim,
780 enum bfa_itnim_event event)
781 {
782 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
783 bfa_trc(itnim->bfa, event);
784
785 switch (event) {
786 case BFA_ITNIM_SM_CLEANUP:
787 if (bfa_itnim_send_fwdelete(itnim))
788 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
789 else
790 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
791 break;
792
793 case BFA_ITNIM_SM_HWFAIL:
794 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
795 bfa_itnim_iocdisable_cleanup(itnim);
796 break;
797
798 default:
799 bfa_sm_fault(itnim->bfa, event);
800 }
801 }
802
803 /*
804 * Rport offline. Fimrware itnim is being deleted - awaiting f/w response.
805 */
806 static void
807 bfa_itnim_sm_fwdelete(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
808 {
809 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
810 bfa_trc(itnim->bfa, event);
811
812 switch (event) {
813 case BFA_ITNIM_SM_FWRSP:
814 bfa_sm_set_state(itnim, bfa_itnim_sm_offline);
815 bfa_itnim_offline_cb(itnim);
816 break;
817
818 case BFA_ITNIM_SM_DELETE:
819 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
820 break;
821
822 case BFA_ITNIM_SM_HWFAIL:
823 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
824 bfa_itnim_offline_cb(itnim);
825 break;
826
827 default:
828 bfa_sm_fault(itnim->bfa, event);
829 }
830 }
831
832 static void
833 bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s *itnim,
834 enum bfa_itnim_event event)
835 {
836 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
837 bfa_trc(itnim->bfa, event);
838
839 switch (event) {
840 case BFA_ITNIM_SM_QRESUME:
841 bfa_sm_set_state(itnim, bfa_itnim_sm_fwdelete);
842 bfa_itnim_send_fwdelete(itnim);
843 break;
844
845 case BFA_ITNIM_SM_DELETE:
846 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting_qfull);
847 break;
848
849 case BFA_ITNIM_SM_HWFAIL:
850 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
851 bfa_reqq_wcancel(&itnim->reqq_wait);
852 bfa_itnim_offline_cb(itnim);
853 break;
854
855 default:
856 bfa_sm_fault(itnim->bfa, event);
857 }
858 }
859
860 /*
861 * Offline state.
862 */
863 static void
864 bfa_itnim_sm_offline(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
865 {
866 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
867 bfa_trc(itnim->bfa, event);
868
869 switch (event) {
870 case BFA_ITNIM_SM_DELETE:
871 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
872 bfa_itnim_iotov_delete(itnim);
873 bfa_fcpim_delitn(itnim);
874 break;
875
876 case BFA_ITNIM_SM_ONLINE:
877 if (bfa_itnim_send_fwcreate(itnim))
878 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
879 else
880 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
881 break;
882
883 case BFA_ITNIM_SM_HWFAIL:
884 bfa_sm_set_state(itnim, bfa_itnim_sm_iocdisable);
885 break;
886
887 default:
888 bfa_sm_fault(itnim->bfa, event);
889 }
890 }
891
892 static void
893 bfa_itnim_sm_iocdisable(struct bfa_itnim_s *itnim,
894 enum bfa_itnim_event event)
895 {
896 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
897 bfa_trc(itnim->bfa, event);
898
899 switch (event) {
900 case BFA_ITNIM_SM_DELETE:
901 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
902 bfa_itnim_iotov_delete(itnim);
903 bfa_fcpim_delitn(itnim);
904 break;
905
906 case BFA_ITNIM_SM_OFFLINE:
907 bfa_itnim_offline_cb(itnim);
908 break;
909
910 case BFA_ITNIM_SM_ONLINE:
911 if (bfa_itnim_send_fwcreate(itnim))
912 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate);
913 else
914 bfa_sm_set_state(itnim, bfa_itnim_sm_fwcreate_qfull);
915 break;
916
917 case BFA_ITNIM_SM_HWFAIL:
918 break;
919
920 default:
921 bfa_sm_fault(itnim->bfa, event);
922 }
923 }
924
925 /*
926 * Itnim is deleted, waiting for firmware response to delete.
927 */
928 static void
929 bfa_itnim_sm_deleting(struct bfa_itnim_s *itnim, enum bfa_itnim_event event)
930 {
931 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
932 bfa_trc(itnim->bfa, event);
933
934 switch (event) {
935 case BFA_ITNIM_SM_FWRSP:
936 case BFA_ITNIM_SM_HWFAIL:
937 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
938 bfa_fcpim_delitn(itnim);
939 break;
940
941 default:
942 bfa_sm_fault(itnim->bfa, event);
943 }
944 }
945
946 static void
947 bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s *itnim,
948 enum bfa_itnim_event event)
949 {
950 bfa_trc(itnim->bfa, itnim->rport->rport_tag);
951 bfa_trc(itnim->bfa, event);
952
953 switch (event) {
954 case BFA_ITNIM_SM_QRESUME:
955 bfa_sm_set_state(itnim, bfa_itnim_sm_deleting);
956 bfa_itnim_send_fwdelete(itnim);
957 break;
958
959 case BFA_ITNIM_SM_HWFAIL:
960 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
961 bfa_reqq_wcancel(&itnim->reqq_wait);
962 bfa_fcpim_delitn(itnim);
963 break;
964
965 default:
966 bfa_sm_fault(itnim->bfa, event);
967 }
968 }
969
970 /*
971 * Initiate cleanup of all IOs on an IOC failure.
972 */
973 static void
974 bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s *itnim)
975 {
976 struct bfa_tskim_s *tskim;
977 struct bfa_ioim_s *ioim;
978 struct list_head *qe, *qen;
979
980 list_for_each_safe(qe, qen, &itnim->tsk_q) {
981 tskim = (struct bfa_tskim_s *) qe;
982 bfa_tskim_iocdisable(tskim);
983 }
984
985 list_for_each_safe(qe, qen, &itnim->io_q) {
986 ioim = (struct bfa_ioim_s *) qe;
987 bfa_ioim_iocdisable(ioim);
988 }
989
990 /*
991 * For IO request in pending queue, we pretend an early timeout.
992 */
993 list_for_each_safe(qe, qen, &itnim->pending_q) {
994 ioim = (struct bfa_ioim_s *) qe;
995 bfa_ioim_tov(ioim);
996 }
997
998 list_for_each_safe(qe, qen, &itnim->io_cleanup_q) {
999 ioim = (struct bfa_ioim_s *) qe;
1000 bfa_ioim_iocdisable(ioim);
1001 }
1002 }
1003
1004 /*
1005 * IO cleanup completion
1006 */
1007 static void
1008 bfa_itnim_cleanp_comp(void *itnim_cbarg)
1009 {
1010 struct bfa_itnim_s *itnim = itnim_cbarg;
1011
1012 bfa_stats(itnim, cleanup_comps);
1013 bfa_sm_send_event(itnim, BFA_ITNIM_SM_CLEANUP);
1014 }
1015
1016 /*
1017 * Initiate cleanup of all IOs.
1018 */
1019 static void
1020 bfa_itnim_cleanup(struct bfa_itnim_s *itnim)
1021 {
1022 struct bfa_ioim_s *ioim;
1023 struct bfa_tskim_s *tskim;
1024 struct list_head *qe, *qen;
1025
1026 bfa_wc_init(&itnim->wc, bfa_itnim_cleanp_comp, itnim);
1027
1028 list_for_each_safe(qe, qen, &itnim->io_q) {
1029 ioim = (struct bfa_ioim_s *) qe;
1030
1031 /*
1032 * Move IO to a cleanup queue from active queue so that a later
1033 * TM will not pickup this IO.
1034 */
1035 list_del(&ioim->qe);
1036 list_add_tail(&ioim->qe, &itnim->io_cleanup_q);
1037
1038 bfa_wc_up(&itnim->wc);
1039 bfa_ioim_cleanup(ioim);
1040 }
1041
1042 list_for_each_safe(qe, qen, &itnim->tsk_q) {
1043 tskim = (struct bfa_tskim_s *) qe;
1044 bfa_wc_up(&itnim->wc);
1045 bfa_tskim_cleanup(tskim);
1046 }
1047
1048 bfa_wc_wait(&itnim->wc);
1049 }
1050
1051 static void
1052 __bfa_cb_itnim_online(void *cbarg, bfa_boolean_t complete)
1053 {
1054 struct bfa_itnim_s *itnim = cbarg;
1055
1056 if (complete)
1057 bfa_cb_itnim_online(itnim->ditn);
1058 }
1059
1060 static void
1061 __bfa_cb_itnim_offline(void *cbarg, bfa_boolean_t complete)
1062 {
1063 struct bfa_itnim_s *itnim = cbarg;
1064
1065 if (complete)
1066 bfa_cb_itnim_offline(itnim->ditn);
1067 }
1068
1069 static void
1070 __bfa_cb_itnim_sler(void *cbarg, bfa_boolean_t complete)
1071 {
1072 struct bfa_itnim_s *itnim = cbarg;
1073
1074 if (complete)
1075 bfa_cb_itnim_sler(itnim->ditn);
1076 }
1077
1078 /*
1079 * Call to resume any I/O requests waiting for room in request queue.
1080 */
1081 static void
1082 bfa_itnim_qresume(void *cbarg)
1083 {
1084 struct bfa_itnim_s *itnim = cbarg;
1085
1086 bfa_sm_send_event(itnim, BFA_ITNIM_SM_QRESUME);
1087 }
1088
1089 /*
1090 * bfa_itnim_public
1091 */
1092
1093 void
1094 bfa_itnim_iodone(struct bfa_itnim_s *itnim)
1095 {
1096 bfa_wc_down(&itnim->wc);
1097 }
1098
1099 void
1100 bfa_itnim_tskdone(struct bfa_itnim_s *itnim)
1101 {
1102 bfa_wc_down(&itnim->wc);
1103 }
1104
1105 void
1106 bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len)
1107 {
1108 /*
1109 * ITN memory
1110 */
1111 *km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itnim_s);
1112 }
1113
1114 void
1115 bfa_itnim_attach(struct bfa_fcpim_s *fcpim)
1116 {
1117 struct bfa_s *bfa = fcpim->bfa;
1118 struct bfa_fcp_mod_s *fcp = fcpim->fcp;
1119 struct bfa_itnim_s *itnim;
1120 int i, j;
1121
1122 INIT_LIST_HEAD(&fcpim->itnim_q);
1123
1124 itnim = (struct bfa_itnim_s *) bfa_mem_kva_curp(fcp);
1125 fcpim->itnim_arr = itnim;
1126
1127 for (i = 0; i < fcpim->num_itnims; i++, itnim++) {
1128 memset(itnim, 0, sizeof(struct bfa_itnim_s));
1129 itnim->bfa = bfa;
1130 itnim->fcpim = fcpim;
1131 itnim->reqq = BFA_REQQ_QOS_LO;
1132 itnim->rport = BFA_RPORT_FROM_TAG(bfa, i);
1133 itnim->iotov_active = BFA_FALSE;
1134 bfa_reqq_winit(&itnim->reqq_wait, bfa_itnim_qresume, itnim);
1135
1136 INIT_LIST_HEAD(&itnim->io_q);
1137 INIT_LIST_HEAD(&itnim->io_cleanup_q);
1138 INIT_LIST_HEAD(&itnim->pending_q);
1139 INIT_LIST_HEAD(&itnim->tsk_q);
1140 INIT_LIST_HEAD(&itnim->delay_comp_q);
1141 for (j = 0; j < BFA_IOBUCKET_MAX; j++)
1142 itnim->ioprofile.io_latency.min[j] = ~0;
1143 bfa_sm_set_state(itnim, bfa_itnim_sm_uninit);
1144 }
1145
1146 bfa_mem_kva_curp(fcp) = (u8 *) itnim;
1147 }
1148
1149 void
1150 bfa_itnim_iocdisable(struct bfa_itnim_s *itnim)
1151 {
1152 bfa_stats(itnim, ioc_disabled);
1153 bfa_sm_send_event(itnim, BFA_ITNIM_SM_HWFAIL);
1154 }
1155
1156 static bfa_boolean_t
1157 bfa_itnim_send_fwcreate(struct bfa_itnim_s *itnim)
1158 {
1159 struct bfi_itn_create_req_s *m;
1160
1161 itnim->msg_no++;
1162
1163 /*
1164 * check for room in queue to send request now
1165 */
1166 m = bfa_reqq_next(itnim->bfa, itnim->reqq);
1167 if (!m) {
1168 bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait);
1169 return BFA_FALSE;
1170 }
1171
1172 bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_CREATE_REQ,
1173 bfa_fn_lpu(itnim->bfa));
1174 m->fw_handle = itnim->rport->fw_handle;
1175 m->class = FC_CLASS_3;
1176 m->seq_rec = itnim->seq_rec;
1177 m->msg_no = itnim->msg_no;
1178 bfa_stats(itnim, fw_create);
1179
1180 /*
1181 * queue I/O message to firmware
1182 */
1183 bfa_reqq_produce(itnim->bfa, itnim->reqq, m->mh);
1184 return BFA_TRUE;
1185 }
1186
1187 static bfa_boolean_t
1188 bfa_itnim_send_fwdelete(struct bfa_itnim_s *itnim)
1189 {
1190 struct bfi_itn_delete_req_s *m;
1191
1192 /*
1193 * check for room in queue to send request now
1194 */
1195 m = bfa_reqq_next(itnim->bfa, itnim->reqq);
1196 if (!m) {
1197 bfa_reqq_wait(itnim->bfa, itnim->reqq, &itnim->reqq_wait);
1198 return BFA_FALSE;
1199 }
1200
1201 bfi_h2i_set(m->mh, BFI_MC_ITN, BFI_ITN_H2I_DELETE_REQ,
1202 bfa_fn_lpu(itnim->bfa));
1203 m->fw_handle = itnim->rport->fw_handle;
1204 bfa_stats(itnim, fw_delete);
1205
1206 /*
1207 * queue I/O message to firmware
1208 */
1209 bfa_reqq_produce(itnim->bfa, itnim->reqq, m->mh);
1210 return BFA_TRUE;
1211 }
1212
1213 /*
1214 * Cleanup all pending failed inflight requests.
1215 */
1216 static void
1217 bfa_itnim_delayed_comp(struct bfa_itnim_s *itnim, bfa_boolean_t iotov)
1218 {
1219 struct bfa_ioim_s *ioim;
1220 struct list_head *qe, *qen;
1221
1222 list_for_each_safe(qe, qen, &itnim->delay_comp_q) {
1223 ioim = (struct bfa_ioim_s *)qe;
1224 bfa_ioim_delayed_comp(ioim, iotov);
1225 }
1226 }
1227
1228 /*
1229 * Start all pending IO requests.
1230 */
1231 static void
1232 bfa_itnim_iotov_online(struct bfa_itnim_s *itnim)
1233 {
1234 struct bfa_ioim_s *ioim;
1235
1236 bfa_itnim_iotov_stop(itnim);
1237
1238 /*
1239 * Abort all inflight IO requests in the queue
1240 */
1241 bfa_itnim_delayed_comp(itnim, BFA_FALSE);
1242
1243 /*
1244 * Start all pending IO requests.
1245 */
1246 while (!list_empty(&itnim->pending_q)) {
1247 bfa_q_deq(&itnim->pending_q, &ioim);
1248 list_add_tail(&ioim->qe, &itnim->io_q);
1249 bfa_ioim_start(ioim);
1250 }
1251 }
1252
1253 /*
1254 * Fail all pending IO requests
1255 */
1256 static void
1257 bfa_itnim_iotov_cleanup(struct bfa_itnim_s *itnim)
1258 {
1259 struct bfa_ioim_s *ioim;
1260
1261 /*
1262 * Fail all inflight IO requests in the queue
1263 */
1264 bfa_itnim_delayed_comp(itnim, BFA_TRUE);
1265
1266 /*
1267 * Fail any pending IO requests.
1268 */
1269 while (!list_empty(&itnim->pending_q)) {
1270 bfa_q_deq(&itnim->pending_q, &ioim);
1271 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
1272 bfa_ioim_tov(ioim);
1273 }
1274 }
1275
1276 /*
1277 * IO TOV timer callback. Fail any pending IO requests.
1278 */
1279 static void
1280 bfa_itnim_iotov(void *itnim_arg)
1281 {
1282 struct bfa_itnim_s *itnim = itnim_arg;
1283
1284 itnim->iotov_active = BFA_FALSE;
1285
1286 bfa_cb_itnim_tov_begin(itnim->ditn);
1287 bfa_itnim_iotov_cleanup(itnim);
1288 bfa_cb_itnim_tov(itnim->ditn);
1289 }
1290
1291 /*
1292 * Start IO TOV timer for failing back pending IO requests in offline state.
1293 */
1294 static void
1295 bfa_itnim_iotov_start(struct bfa_itnim_s *itnim)
1296 {
1297 if (itnim->fcpim->path_tov > 0) {
1298
1299 itnim->iotov_active = BFA_TRUE;
1300 WARN_ON(!bfa_itnim_hold_io(itnim));
1301 bfa_timer_start(itnim->bfa, &itnim->timer,
1302 bfa_itnim_iotov, itnim, itnim->fcpim->path_tov);
1303 }
1304 }
1305
1306 /*
1307 * Stop IO TOV timer.
1308 */
1309 static void
1310 bfa_itnim_iotov_stop(struct bfa_itnim_s *itnim)
1311 {
1312 if (itnim->iotov_active) {
1313 itnim->iotov_active = BFA_FALSE;
1314 bfa_timer_stop(&itnim->timer);
1315 }
1316 }
1317
1318 /*
1319 * Stop IO TOV timer.
1320 */
1321 static void
1322 bfa_itnim_iotov_delete(struct bfa_itnim_s *itnim)
1323 {
1324 bfa_boolean_t pathtov_active = BFA_FALSE;
1325
1326 if (itnim->iotov_active)
1327 pathtov_active = BFA_TRUE;
1328
1329 bfa_itnim_iotov_stop(itnim);
1330 if (pathtov_active)
1331 bfa_cb_itnim_tov_begin(itnim->ditn);
1332 bfa_itnim_iotov_cleanup(itnim);
1333 if (pathtov_active)
1334 bfa_cb_itnim_tov(itnim->ditn);
1335 }
1336
1337 static void
1338 bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim)
1339 {
1340 struct bfa_fcpim_s *fcpim = BFA_FCPIM(itnim->bfa);
1341 fcpim->del_itn_stats.del_itn_iocomp_aborted +=
1342 itnim->stats.iocomp_aborted;
1343 fcpim->del_itn_stats.del_itn_iocomp_timedout +=
1344 itnim->stats.iocomp_timedout;
1345 fcpim->del_itn_stats.del_itn_iocom_sqer_needed +=
1346 itnim->stats.iocom_sqer_needed;
1347 fcpim->del_itn_stats.del_itn_iocom_res_free +=
1348 itnim->stats.iocom_res_free;
1349 fcpim->del_itn_stats.del_itn_iocom_hostabrts +=
1350 itnim->stats.iocom_hostabrts;
1351 fcpim->del_itn_stats.del_itn_total_ios += itnim->stats.total_ios;
1352 fcpim->del_itn_stats.del_io_iocdowns += itnim->stats.io_iocdowns;
1353 fcpim->del_itn_stats.del_tm_iocdowns += itnim->stats.tm_iocdowns;
1354 }
1355
1356 /*
1357 * bfa_itnim_public
1358 */
1359
1360 /*
1361 * Itnim interrupt processing.
1362 */
1363 void
1364 bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
1365 {
1366 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
1367 union bfi_itn_i2h_msg_u msg;
1368 struct bfa_itnim_s *itnim;
1369
1370 bfa_trc(bfa, m->mhdr.msg_id);
1371
1372 msg.msg = m;
1373
1374 switch (m->mhdr.msg_id) {
1375 case BFI_ITN_I2H_CREATE_RSP:
1376 itnim = BFA_ITNIM_FROM_TAG(fcpim,
1377 msg.create_rsp->bfa_handle);
1378 WARN_ON(msg.create_rsp->status != BFA_STATUS_OK);
1379 bfa_stats(itnim, create_comps);
1380 bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
1381 break;
1382
1383 case BFI_ITN_I2H_DELETE_RSP:
1384 itnim = BFA_ITNIM_FROM_TAG(fcpim,
1385 msg.delete_rsp->bfa_handle);
1386 WARN_ON(msg.delete_rsp->status != BFA_STATUS_OK);
1387 bfa_stats(itnim, delete_comps);
1388 bfa_sm_send_event(itnim, BFA_ITNIM_SM_FWRSP);
1389 break;
1390
1391 case BFI_ITN_I2H_SLER_EVENT:
1392 itnim = BFA_ITNIM_FROM_TAG(fcpim,
1393 msg.sler_event->bfa_handle);
1394 bfa_stats(itnim, sler_events);
1395 bfa_sm_send_event(itnim, BFA_ITNIM_SM_SLER);
1396 break;
1397
1398 default:
1399 bfa_trc(bfa, m->mhdr.msg_id);
1400 WARN_ON(1);
1401 }
1402 }
1403
1404 /*
1405 * bfa_itnim_api
1406 */
1407
1408 struct bfa_itnim_s *
1409 bfa_itnim_create(struct bfa_s *bfa, struct bfa_rport_s *rport, void *ditn)
1410 {
1411 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
1412 struct bfa_itnim_s *itnim;
1413
1414 bfa_itn_create(bfa, rport, bfa_itnim_isr);
1415
1416 itnim = BFA_ITNIM_FROM_TAG(fcpim, rport->rport_tag);
1417 WARN_ON(itnim->rport != rport);
1418
1419 itnim->ditn = ditn;
1420
1421 bfa_stats(itnim, creates);
1422 bfa_sm_send_event(itnim, BFA_ITNIM_SM_CREATE);
1423
1424 return itnim;
1425 }
1426
1427 void
1428 bfa_itnim_delete(struct bfa_itnim_s *itnim)
1429 {
1430 bfa_stats(itnim, deletes);
1431 bfa_sm_send_event(itnim, BFA_ITNIM_SM_DELETE);
1432 }
1433
1434 void
1435 bfa_itnim_online(struct bfa_itnim_s *itnim, bfa_boolean_t seq_rec)
1436 {
1437 itnim->seq_rec = seq_rec;
1438 bfa_stats(itnim, onlines);
1439 bfa_sm_send_event(itnim, BFA_ITNIM_SM_ONLINE);
1440 }
1441
1442 void
1443 bfa_itnim_offline(struct bfa_itnim_s *itnim)
1444 {
1445 bfa_stats(itnim, offlines);
1446 bfa_sm_send_event(itnim, BFA_ITNIM_SM_OFFLINE);
1447 }
1448
1449 /*
1450 * Return true if itnim is considered offline for holding off IO request.
1451 * IO is not held if itnim is being deleted.
1452 */
1453 bfa_boolean_t
1454 bfa_itnim_hold_io(struct bfa_itnim_s *itnim)
1455 {
1456 return itnim->fcpim->path_tov && itnim->iotov_active &&
1457 (bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwcreate) ||
1458 bfa_sm_cmp_state(itnim, bfa_itnim_sm_sler) ||
1459 bfa_sm_cmp_state(itnim, bfa_itnim_sm_cleanup_offline) ||
1460 bfa_sm_cmp_state(itnim, bfa_itnim_sm_fwdelete) ||
1461 bfa_sm_cmp_state(itnim, bfa_itnim_sm_offline) ||
1462 bfa_sm_cmp_state(itnim, bfa_itnim_sm_iocdisable));
1463 }
1464
1465 #define bfa_io_lat_clock_res_div HZ
1466 #define bfa_io_lat_clock_res_mul 1000
1467 bfa_status_t
1468 bfa_itnim_get_ioprofile(struct bfa_itnim_s *itnim,
1469 struct bfa_itnim_ioprofile_s *ioprofile)
1470 {
1471 struct bfa_fcpim_s *fcpim;
1472
1473 if (!itnim)
1474 return BFA_STATUS_NO_FCPIM_NEXUS;
1475
1476 fcpim = BFA_FCPIM(itnim->bfa);
1477
1478 if (!fcpim->io_profile)
1479 return BFA_STATUS_IOPROFILE_OFF;
1480
1481 itnim->ioprofile.index = BFA_IOBUCKET_MAX;
1482 itnim->ioprofile.io_profile_start_time =
1483 bfa_io_profile_start_time(itnim->bfa);
1484 itnim->ioprofile.clock_res_mul = bfa_io_lat_clock_res_mul;
1485 itnim->ioprofile.clock_res_div = bfa_io_lat_clock_res_div;
1486 *ioprofile = itnim->ioprofile;
1487
1488 return BFA_STATUS_OK;
1489 }
1490
1491 void
1492 bfa_itnim_clear_stats(struct bfa_itnim_s *itnim)
1493 {
1494 int j;
1495
1496 if (!itnim)
1497 return;
1498
1499 memset(&itnim->stats, 0, sizeof(itnim->stats));
1500 memset(&itnim->ioprofile, 0, sizeof(itnim->ioprofile));
1501 for (j = 0; j < BFA_IOBUCKET_MAX; j++)
1502 itnim->ioprofile.io_latency.min[j] = ~0;
1503 }
1504
1505 /*
1506 * BFA IO module state machine functions
1507 */
1508
1509 /*
1510 * IO is not started (unallocated).
1511 */
1512 static void
1513 bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1514 {
1515 switch (event) {
1516 case BFA_IOIM_SM_START:
1517 if (!bfa_itnim_is_online(ioim->itnim)) {
1518 if (!bfa_itnim_hold_io(ioim->itnim)) {
1519 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1520 list_del(&ioim->qe);
1521 list_add_tail(&ioim->qe,
1522 &ioim->fcpim->ioim_comp_q);
1523 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1524 __bfa_cb_ioim_pathtov, ioim);
1525 } else {
1526 list_del(&ioim->qe);
1527 list_add_tail(&ioim->qe,
1528 &ioim->itnim->pending_q);
1529 }
1530 break;
1531 }
1532
1533 if (ioim->nsges > BFI_SGE_INLINE) {
1534 if (!bfa_ioim_sgpg_alloc(ioim)) {
1535 bfa_sm_set_state(ioim, bfa_ioim_sm_sgalloc);
1536 return;
1537 }
1538 }
1539
1540 if (!bfa_ioim_send_ioreq(ioim)) {
1541 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
1542 break;
1543 }
1544
1545 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1546 break;
1547
1548 case BFA_IOIM_SM_IOTOV:
1549 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1550 bfa_ioim_move_to_comp_q(ioim);
1551 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1552 __bfa_cb_ioim_pathtov, ioim);
1553 break;
1554
1555 case BFA_IOIM_SM_ABORT:
1556 /*
1557 * IO in pending queue can get abort requests. Complete abort
1558 * requests immediately.
1559 */
1560 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1561 WARN_ON(!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim));
1562 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1563 __bfa_cb_ioim_abort, ioim);
1564 break;
1565
1566 default:
1567 bfa_sm_fault(ioim->bfa, event);
1568 }
1569 }
1570
1571 /*
1572 * IO is waiting for SG pages.
1573 */
1574 static void
1575 bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1576 {
1577 bfa_trc(ioim->bfa, ioim->iotag);
1578 bfa_trc(ioim->bfa, event);
1579
1580 switch (event) {
1581 case BFA_IOIM_SM_SGALLOCED:
1582 if (!bfa_ioim_send_ioreq(ioim)) {
1583 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
1584 break;
1585 }
1586 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1587 break;
1588
1589 case BFA_IOIM_SM_CLEANUP:
1590 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1591 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
1592 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1593 ioim);
1594 bfa_ioim_notify_cleanup(ioim);
1595 break;
1596
1597 case BFA_IOIM_SM_ABORT:
1598 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1599 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
1600 bfa_ioim_move_to_comp_q(ioim);
1601 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1602 ioim);
1603 break;
1604
1605 case BFA_IOIM_SM_HWFAIL:
1606 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1607 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
1608 bfa_ioim_move_to_comp_q(ioim);
1609 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1610 ioim);
1611 break;
1612
1613 default:
1614 bfa_sm_fault(ioim->bfa, event);
1615 }
1616 }
1617
1618 /*
1619 * IO is active.
1620 */
1621 static void
1622 bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1623 {
1624 switch (event) {
1625 case BFA_IOIM_SM_COMP_GOOD:
1626 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1627 bfa_ioim_move_to_comp_q(ioim);
1628 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1629 __bfa_cb_ioim_good_comp, ioim);
1630 break;
1631
1632 case BFA_IOIM_SM_COMP:
1633 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1634 bfa_ioim_move_to_comp_q(ioim);
1635 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp,
1636 ioim);
1637 break;
1638
1639 case BFA_IOIM_SM_DONE:
1640 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1641 bfa_ioim_move_to_comp_q(ioim);
1642 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp,
1643 ioim);
1644 break;
1645
1646 case BFA_IOIM_SM_ABORT:
1647 ioim->iosp->abort_explicit = BFA_TRUE;
1648 ioim->io_cbfn = __bfa_cb_ioim_abort;
1649
1650 if (bfa_ioim_send_abort(ioim))
1651 bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
1652 else {
1653 bfa_sm_set_state(ioim, bfa_ioim_sm_abort_qfull);
1654 bfa_stats(ioim->itnim, qwait);
1655 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1656 &ioim->iosp->reqq_wait);
1657 }
1658 break;
1659
1660 case BFA_IOIM_SM_CLEANUP:
1661 ioim->iosp->abort_explicit = BFA_FALSE;
1662 ioim->io_cbfn = __bfa_cb_ioim_failed;
1663
1664 if (bfa_ioim_send_abort(ioim))
1665 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1666 else {
1667 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1668 bfa_stats(ioim->itnim, qwait);
1669 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1670 &ioim->iosp->reqq_wait);
1671 }
1672 break;
1673
1674 case BFA_IOIM_SM_HWFAIL:
1675 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1676 bfa_ioim_move_to_comp_q(ioim);
1677 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1678 ioim);
1679 break;
1680
1681 case BFA_IOIM_SM_SQRETRY:
1682 if (bfa_ioim_maxretry_reached(ioim)) {
1683 /* max retry reached, free IO */
1684 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1685 bfa_ioim_move_to_comp_q(ioim);
1686 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1687 __bfa_cb_ioim_failed, ioim);
1688 break;
1689 }
1690 /* waiting for IO tag resource free */
1691 bfa_sm_set_state(ioim, bfa_ioim_sm_cmnd_retry);
1692 break;
1693
1694 default:
1695 bfa_sm_fault(ioim->bfa, event);
1696 }
1697 }
1698
1699 /*
1700 * IO is retried with new tag.
1701 */
1702 static void
1703 bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1704 {
1705 switch (event) {
1706 case BFA_IOIM_SM_FREE:
1707 /* abts and rrq done. Now retry the IO with new tag */
1708 bfa_ioim_update_iotag(ioim);
1709 if (!bfa_ioim_send_ioreq(ioim)) {
1710 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
1711 break;
1712 }
1713 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1714 break;
1715
1716 case BFA_IOIM_SM_CLEANUP:
1717 ioim->iosp->abort_explicit = BFA_FALSE;
1718 ioim->io_cbfn = __bfa_cb_ioim_failed;
1719
1720 if (bfa_ioim_send_abort(ioim))
1721 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1722 else {
1723 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1724 bfa_stats(ioim->itnim, qwait);
1725 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1726 &ioim->iosp->reqq_wait);
1727 }
1728 break;
1729
1730 case BFA_IOIM_SM_HWFAIL:
1731 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1732 bfa_ioim_move_to_comp_q(ioim);
1733 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1734 __bfa_cb_ioim_failed, ioim);
1735 break;
1736
1737 case BFA_IOIM_SM_ABORT:
1738 /* in this state IO abort is done.
1739 * Waiting for IO tag resource free.
1740 */
1741 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1742 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1743 ioim);
1744 break;
1745
1746 default:
1747 bfa_sm_fault(ioim->bfa, event);
1748 }
1749 }
1750
1751 /*
1752 * IO is being aborted, waiting for completion from firmware.
1753 */
1754 static void
1755 bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1756 {
1757 bfa_trc(ioim->bfa, ioim->iotag);
1758 bfa_trc(ioim->bfa, event);
1759
1760 switch (event) {
1761 case BFA_IOIM_SM_COMP_GOOD:
1762 case BFA_IOIM_SM_COMP:
1763 case BFA_IOIM_SM_DONE:
1764 case BFA_IOIM_SM_FREE:
1765 break;
1766
1767 case BFA_IOIM_SM_ABORT_DONE:
1768 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1769 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1770 ioim);
1771 break;
1772
1773 case BFA_IOIM_SM_ABORT_COMP:
1774 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1775 bfa_ioim_move_to_comp_q(ioim);
1776 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1777 ioim);
1778 break;
1779
1780 case BFA_IOIM_SM_COMP_UTAG:
1781 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1782 bfa_ioim_move_to_comp_q(ioim);
1783 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1784 ioim);
1785 break;
1786
1787 case BFA_IOIM_SM_CLEANUP:
1788 WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE);
1789 ioim->iosp->abort_explicit = BFA_FALSE;
1790
1791 if (bfa_ioim_send_abort(ioim))
1792 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1793 else {
1794 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1795 bfa_stats(ioim->itnim, qwait);
1796 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1797 &ioim->iosp->reqq_wait);
1798 }
1799 break;
1800
1801 case BFA_IOIM_SM_HWFAIL:
1802 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1803 bfa_ioim_move_to_comp_q(ioim);
1804 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1805 ioim);
1806 break;
1807
1808 default:
1809 bfa_sm_fault(ioim->bfa, event);
1810 }
1811 }
1812
1813 /*
1814 * IO is being cleaned up (implicit abort), waiting for completion from
1815 * firmware.
1816 */
1817 static void
1818 bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1819 {
1820 bfa_trc(ioim->bfa, ioim->iotag);
1821 bfa_trc(ioim->bfa, event);
1822
1823 switch (event) {
1824 case BFA_IOIM_SM_COMP_GOOD:
1825 case BFA_IOIM_SM_COMP:
1826 case BFA_IOIM_SM_DONE:
1827 case BFA_IOIM_SM_FREE:
1828 break;
1829
1830 case BFA_IOIM_SM_ABORT:
1831 /*
1832 * IO is already being aborted implicitly
1833 */
1834 ioim->io_cbfn = __bfa_cb_ioim_abort;
1835 break;
1836
1837 case BFA_IOIM_SM_ABORT_DONE:
1838 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1839 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1840 bfa_ioim_notify_cleanup(ioim);
1841 break;
1842
1843 case BFA_IOIM_SM_ABORT_COMP:
1844 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1845 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1846 bfa_ioim_notify_cleanup(ioim);
1847 break;
1848
1849 case BFA_IOIM_SM_COMP_UTAG:
1850 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1851 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1852 bfa_ioim_notify_cleanup(ioim);
1853 break;
1854
1855 case BFA_IOIM_SM_HWFAIL:
1856 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1857 bfa_ioim_move_to_comp_q(ioim);
1858 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1859 ioim);
1860 break;
1861
1862 case BFA_IOIM_SM_CLEANUP:
1863 /*
1864 * IO can be in cleanup state already due to TM command.
1865 * 2nd cleanup request comes from ITN offline event.
1866 */
1867 break;
1868
1869 default:
1870 bfa_sm_fault(ioim->bfa, event);
1871 }
1872 }
1873
1874 /*
1875 * IO is waiting for room in request CQ
1876 */
1877 static void
1878 bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1879 {
1880 bfa_trc(ioim->bfa, ioim->iotag);
1881 bfa_trc(ioim->bfa, event);
1882
1883 switch (event) {
1884 case BFA_IOIM_SM_QRESUME:
1885 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1886 bfa_ioim_send_ioreq(ioim);
1887 break;
1888
1889 case BFA_IOIM_SM_ABORT:
1890 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1891 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1892 bfa_ioim_move_to_comp_q(ioim);
1893 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1894 ioim);
1895 break;
1896
1897 case BFA_IOIM_SM_CLEANUP:
1898 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1899 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1900 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1901 ioim);
1902 bfa_ioim_notify_cleanup(ioim);
1903 break;
1904
1905 case BFA_IOIM_SM_HWFAIL:
1906 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1907 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1908 bfa_ioim_move_to_comp_q(ioim);
1909 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1910 ioim);
1911 break;
1912
1913 default:
1914 bfa_sm_fault(ioim->bfa, event);
1915 }
1916 }
1917
1918 /*
1919 * Active IO is being aborted, waiting for room in request CQ.
1920 */
1921 static void
1922 bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1923 {
1924 bfa_trc(ioim->bfa, ioim->iotag);
1925 bfa_trc(ioim->bfa, event);
1926
1927 switch (event) {
1928 case BFA_IOIM_SM_QRESUME:
1929 bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
1930 bfa_ioim_send_abort(ioim);
1931 break;
1932
1933 case BFA_IOIM_SM_CLEANUP:
1934 WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE);
1935 ioim->iosp->abort_explicit = BFA_FALSE;
1936 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1937 break;
1938
1939 case BFA_IOIM_SM_COMP_GOOD:
1940 case BFA_IOIM_SM_COMP:
1941 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1942 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1943 bfa_ioim_move_to_comp_q(ioim);
1944 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1945 ioim);
1946 break;
1947
1948 case BFA_IOIM_SM_DONE:
1949 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1950 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1951 bfa_ioim_move_to_comp_q(ioim);
1952 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1953 ioim);
1954 break;
1955
1956 case BFA_IOIM_SM_HWFAIL:
1957 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1958 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1959 bfa_ioim_move_to_comp_q(ioim);
1960 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1961 ioim);
1962 break;
1963
1964 default:
1965 bfa_sm_fault(ioim->bfa, event);
1966 }
1967 }
1968
1969 /*
1970 * Active IO is being cleaned up, waiting for room in request CQ.
1971 */
1972 static void
1973 bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1974 {
1975 bfa_trc(ioim->bfa, ioim->iotag);
1976 bfa_trc(ioim->bfa, event);
1977
1978 switch (event) {
1979 case BFA_IOIM_SM_QRESUME:
1980 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1981 bfa_ioim_send_abort(ioim);
1982 break;
1983
1984 case BFA_IOIM_SM_ABORT:
1985 /*
1986 * IO is already being cleaned up implicitly
1987 */
1988 ioim->io_cbfn = __bfa_cb_ioim_abort;
1989 break;
1990
1991 case BFA_IOIM_SM_COMP_GOOD:
1992 case BFA_IOIM_SM_COMP:
1993 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1994 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1995 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1996 bfa_ioim_notify_cleanup(ioim);
1997 break;
1998
1999 case BFA_IOIM_SM_DONE:
2000 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
2001 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
2002 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
2003 bfa_ioim_notify_cleanup(ioim);
2004 break;
2005
2006 case BFA_IOIM_SM_HWFAIL:
2007 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
2008 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
2009 bfa_ioim_move_to_comp_q(ioim);
2010 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
2011 ioim);
2012 break;
2013
2014 default:
2015 bfa_sm_fault(ioim->bfa, event);
2016 }
2017 }
2018
2019 /*
2020 * IO bfa callback is pending.
2021 */
2022 static void
2023 bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
2024 {
2025 switch (event) {
2026 case BFA_IOIM_SM_HCB:
2027 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
2028 bfa_ioim_free(ioim);
2029 break;
2030
2031 case BFA_IOIM_SM_CLEANUP:
2032 bfa_ioim_notify_cleanup(ioim);
2033 break;
2034
2035 case BFA_IOIM_SM_HWFAIL:
2036 break;
2037
2038 default:
2039 bfa_sm_fault(ioim->bfa, event);
2040 }
2041 }
2042
2043 /*
2044 * IO bfa callback is pending. IO resource cannot be freed.
2045 */
2046 static void
2047 bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
2048 {
2049 bfa_trc(ioim->bfa, ioim->iotag);
2050 bfa_trc(ioim->bfa, event);
2051
2052 switch (event) {
2053 case BFA_IOIM_SM_HCB:
2054 bfa_sm_set_state(ioim, bfa_ioim_sm_resfree);
2055 list_del(&ioim->qe);
2056 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_resfree_q);
2057 break;
2058
2059 case BFA_IOIM_SM_FREE:
2060 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
2061 break;
2062
2063 case BFA_IOIM_SM_CLEANUP:
2064 bfa_ioim_notify_cleanup(ioim);
2065 break;
2066
2067 case BFA_IOIM_SM_HWFAIL:
2068 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
2069 break;
2070
2071 default:
2072 bfa_sm_fault(ioim->bfa, event);
2073 }
2074 }
2075
2076 /*
2077 * IO is completed, waiting resource free from firmware.
2078 */
2079 static void
2080 bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
2081 {
2082 bfa_trc(ioim->bfa, ioim->iotag);
2083 bfa_trc(ioim->bfa, event);
2084
2085 switch (event) {
2086 case BFA_IOIM_SM_FREE:
2087 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
2088 bfa_ioim_free(ioim);
2089 break;
2090
2091 case BFA_IOIM_SM_CLEANUP:
2092 bfa_ioim_notify_cleanup(ioim);
2093 break;
2094
2095 case BFA_IOIM_SM_HWFAIL:
2096 break;
2097
2098 default:
2099 bfa_sm_fault(ioim->bfa, event);
2100 }
2101 }
2102
2103 /*
2104 * This is called from bfa_fcpim_start after the bfa_init() with flash read
2105 * is complete by driver. now invalidate the stale content of lun mask
2106 * like unit attention, rp tag and lp tag.
2107 */
2108 static void
2109 bfa_ioim_lm_init(struct bfa_s *bfa)
2110 {
2111 struct bfa_lun_mask_s *lunm_list;
2112 int i;
2113
2114 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2115 return;
2116
2117 lunm_list = bfa_get_lun_mask_list(bfa);
2118 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2119 lunm_list[i].ua = BFA_IOIM_LM_UA_RESET;
2120 lunm_list[i].lp_tag = BFA_LP_TAG_INVALID;
2121 lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID;
2122 }
2123 }
2124
2125 static void
2126 __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete)
2127 {
2128 struct bfa_ioim_s *ioim = cbarg;
2129
2130 if (!complete) {
2131 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2132 return;
2133 }
2134
2135 bfa_cb_ioim_good_comp(ioim->bfa->bfad, ioim->dio);
2136 }
2137
2138 static void
2139 __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete)
2140 {
2141 struct bfa_ioim_s *ioim = cbarg;
2142 struct bfi_ioim_rsp_s *m;
2143 u8 *snsinfo = NULL;
2144 u8 sns_len = 0;
2145 s32 residue = 0;
2146
2147 if (!complete) {
2148 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2149 return;
2150 }
2151
2152 m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg;
2153 if (m->io_status == BFI_IOIM_STS_OK) {
2154 /*
2155 * setup sense information, if present
2156 */
2157 if ((m->scsi_status == SCSI_STATUS_CHECK_CONDITION) &&
2158 m->sns_len) {
2159 sns_len = m->sns_len;
2160 snsinfo = BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp,
2161 ioim->iotag);
2162 }
2163
2164 /*
2165 * setup residue value correctly for normal completions
2166 */
2167 if (m->resid_flags == FCP_RESID_UNDER) {
2168 residue = be32_to_cpu(m->residue);
2169 bfa_stats(ioim->itnim, iocomp_underrun);
2170 }
2171 if (m->resid_flags == FCP_RESID_OVER) {
2172 residue = be32_to_cpu(m->residue);
2173 residue = -residue;
2174 bfa_stats(ioim->itnim, iocomp_overrun);
2175 }
2176 }
2177
2178 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, m->io_status,
2179 m->scsi_status, sns_len, snsinfo, residue);
2180 }
2181
2182 void
2183 bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn,
2184 u16 rp_tag, u8 lp_tag)
2185 {
2186 struct bfa_lun_mask_s *lun_list;
2187 u8 i;
2188
2189 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2190 return;
2191
2192 lun_list = bfa_get_lun_mask_list(bfa);
2193 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2194 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) {
2195 if ((lun_list[i].lp_wwn == lp_wwn) &&
2196 (lun_list[i].rp_wwn == rp_wwn)) {
2197 lun_list[i].rp_tag = rp_tag;
2198 lun_list[i].lp_tag = lp_tag;
2199 }
2200 }
2201 }
2202 }
2203
2204 /*
2205 * set UA for all active luns in LM DB
2206 */
2207 static void
2208 bfa_ioim_lm_set_ua(struct bfa_s *bfa)
2209 {
2210 struct bfa_lun_mask_s *lunm_list;
2211 int i;
2212
2213 lunm_list = bfa_get_lun_mask_list(bfa);
2214 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2215 if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
2216 continue;
2217 lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
2218 }
2219 }
2220
2221 bfa_status_t
2222 bfa_fcpim_lunmask_update(struct bfa_s *bfa, u32 update)
2223 {
2224 struct bfa_lunmask_cfg_s *lun_mask;
2225
2226 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2227 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2228 return BFA_STATUS_FAILED;
2229
2230 if (bfa_get_lun_mask_status(bfa) == update)
2231 return BFA_STATUS_NO_CHANGE;
2232
2233 lun_mask = bfa_get_lun_mask(bfa);
2234 lun_mask->status = update;
2235
2236 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED)
2237 bfa_ioim_lm_set_ua(bfa);
2238
2239 return bfa_dconf_update(bfa);
2240 }
2241
2242 bfa_status_t
2243 bfa_fcpim_lunmask_clear(struct bfa_s *bfa)
2244 {
2245 int i;
2246 struct bfa_lun_mask_s *lunm_list;
2247
2248 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2249 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2250 return BFA_STATUS_FAILED;
2251
2252 lunm_list = bfa_get_lun_mask_list(bfa);
2253 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2254 if (lunm_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) {
2255 if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID)
2256 bfa_rport_unset_lunmask(bfa,
2257 BFA_RPORT_FROM_TAG(bfa, lunm_list[i].rp_tag));
2258 }
2259 }
2260
2261 memset(lunm_list, 0, sizeof(struct bfa_lun_mask_s) * MAX_LUN_MASK_CFG);
2262 return bfa_dconf_update(bfa);
2263 }
2264
2265 bfa_status_t
2266 bfa_fcpim_lunmask_query(struct bfa_s *bfa, void *buf)
2267 {
2268 struct bfa_lunmask_cfg_s *lun_mask;
2269
2270 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2271 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2272 return BFA_STATUS_FAILED;
2273
2274 lun_mask = bfa_get_lun_mask(bfa);
2275 memcpy(buf, lun_mask, sizeof(struct bfa_lunmask_cfg_s));
2276 return BFA_STATUS_OK;
2277 }
2278
2279 bfa_status_t
2280 bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
2281 wwn_t rpwwn, struct scsi_lun lun)
2282 {
2283 struct bfa_lun_mask_s *lunm_list;
2284 struct bfa_rport_s *rp = NULL;
2285 int i, free_index = MAX_LUN_MASK_CFG + 1;
2286 struct bfa_fcs_lport_s *port = NULL;
2287 struct bfa_fcs_rport_s *rp_fcs;
2288
2289 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2290 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2291 return BFA_STATUS_FAILED;
2292
2293 port = bfa_fcs_lookup_port(&((struct bfad_s *)bfa->bfad)->bfa_fcs,
2294 vf_id, *pwwn);
2295 if (port) {
2296 *pwwn = port->port_cfg.pwwn;
2297 rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
2298 if (rp_fcs)
2299 rp = rp_fcs->bfa_rport;
2300 }
2301
2302 lunm_list = bfa_get_lun_mask_list(bfa);
2303 /* if entry exists */
2304 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2305 if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
2306 free_index = i;
2307 if ((lunm_list[i].lp_wwn == *pwwn) &&
2308 (lunm_list[i].rp_wwn == rpwwn) &&
2309 (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) ==
2310 scsilun_to_int((struct scsi_lun *)&lun)))
2311 return BFA_STATUS_ENTRY_EXISTS;
2312 }
2313
2314 if (free_index > MAX_LUN_MASK_CFG)
2315 return BFA_STATUS_MAX_ENTRY_REACHED;
2316
2317 if (rp) {
2318 lunm_list[free_index].lp_tag = bfa_lps_get_tag_from_pid(bfa,
2319 rp->rport_info.local_pid);
2320 lunm_list[free_index].rp_tag = rp->rport_tag;
2321 } else {
2322 lunm_list[free_index].lp_tag = BFA_LP_TAG_INVALID;
2323 lunm_list[free_index].rp_tag = BFA_RPORT_TAG_INVALID;
2324 }
2325
2326 lunm_list[free_index].lp_wwn = *pwwn;
2327 lunm_list[free_index].rp_wwn = rpwwn;
2328 lunm_list[free_index].lun = lun;
2329 lunm_list[free_index].state = BFA_IOIM_LUN_MASK_ACTIVE;
2330
2331 /* set for all luns in this rp */
2332 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2333 if ((lunm_list[i].lp_wwn == *pwwn) &&
2334 (lunm_list[i].rp_wwn == rpwwn))
2335 lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
2336 }
2337
2338 return bfa_dconf_update(bfa);
2339 }
2340
2341 bfa_status_t
2342 bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
2343 wwn_t rpwwn, struct scsi_lun lun)
2344 {
2345 struct bfa_lun_mask_s *lunm_list;
2346 struct bfa_rport_s *rp = NULL;
2347 struct bfa_fcs_lport_s *port = NULL;
2348 struct bfa_fcs_rport_s *rp_fcs;
2349 int i;
2350
2351 /* in min cfg lunm_list could be NULL but no commands should run. */
2352 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2353 return BFA_STATUS_FAILED;
2354
2355 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2356 bfa_trc(bfa, *pwwn);
2357 bfa_trc(bfa, rpwwn);
2358 bfa_trc(bfa, scsilun_to_int((struct scsi_lun *)&lun));
2359
2360 if (*pwwn == 0) {
2361 port = bfa_fcs_lookup_port(
2362 &((struct bfad_s *)bfa->bfad)->bfa_fcs,
2363 vf_id, *pwwn);
2364 if (port) {
2365 *pwwn = port->port_cfg.pwwn;
2366 rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
2367 if (rp_fcs)
2368 rp = rp_fcs->bfa_rport;
2369 }
2370 }
2371
2372 lunm_list = bfa_get_lun_mask_list(bfa);
2373 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2374 if ((lunm_list[i].lp_wwn == *pwwn) &&
2375 (lunm_list[i].rp_wwn == rpwwn) &&
2376 (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) ==
2377 scsilun_to_int((struct scsi_lun *)&lun))) {
2378 lunm_list[i].lp_wwn = 0;
2379 lunm_list[i].rp_wwn = 0;
2380 int_to_scsilun(0, &lunm_list[i].lun);
2381 lunm_list[i].state = BFA_IOIM_LUN_MASK_INACTIVE;
2382 if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) {
2383 lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID;
2384 lunm_list[i].lp_tag = BFA_LP_TAG_INVALID;
2385 }
2386 return bfa_dconf_update(bfa);
2387 }
2388 }
2389
2390 /* set for all luns in this rp */
2391 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2392 if ((lunm_list[i].lp_wwn == *pwwn) &&
2393 (lunm_list[i].rp_wwn == rpwwn))
2394 lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
2395 }
2396
2397 return BFA_STATUS_ENTRY_NOT_EXISTS;
2398 }
2399
2400 static void
2401 __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete)
2402 {
2403 struct bfa_ioim_s *ioim = cbarg;
2404
2405 if (!complete) {
2406 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2407 return;
2408 }
2409
2410 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED,
2411 0, 0, NULL, 0);
2412 }
2413
2414 static void
2415 __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete)
2416 {
2417 struct bfa_ioim_s *ioim = cbarg;
2418
2419 bfa_stats(ioim->itnim, path_tov_expired);
2420 if (!complete) {
2421 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2422 return;
2423 }
2424
2425 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV,
2426 0, 0, NULL, 0);
2427 }
2428
2429 static void
2430 __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete)
2431 {
2432 struct bfa_ioim_s *ioim = cbarg;
2433
2434 if (!complete) {
2435 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2436 return;
2437 }
2438
2439 bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio);
2440 }
2441
2442 static void
2443 bfa_ioim_sgpg_alloced(void *cbarg)
2444 {
2445 struct bfa_ioim_s *ioim = cbarg;
2446
2447 ioim->nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
2448 list_splice_tail_init(&ioim->iosp->sgpg_wqe.sgpg_q, &ioim->sgpg_q);
2449 ioim->sgpg = bfa_q_first(&ioim->sgpg_q);
2450 bfa_sm_send_event(ioim, BFA_IOIM_SM_SGALLOCED);
2451 }
2452
2453 /*
2454 * Send I/O request to firmware.
2455 */
2456 static bfa_boolean_t
2457 bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
2458 {
2459 struct bfa_itnim_s *itnim = ioim->itnim;
2460 struct bfi_ioim_req_s *m;
2461 static struct fcp_cmnd_s cmnd_z0 = { { { 0 } } };
2462 struct bfi_sge_s *sge, *sgpge;
2463 u32 pgdlen = 0;
2464 u32 fcp_dl;
2465 u64 addr;
2466 struct scatterlist *sg;
2467 struct bfa_sgpg_s *sgpg;
2468 struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
2469 u32 i, sge_id, pgcumsz;
2470 enum dma_data_direction dmadir;
2471
2472 /*
2473 * check for room in queue to send request now
2474 */
2475 m = bfa_reqq_next(ioim->bfa, ioim->reqq);
2476 if (!m) {
2477 bfa_stats(ioim->itnim, qwait);
2478 bfa_reqq_wait(ioim->bfa, ioim->reqq,
2479 &ioim->iosp->reqq_wait);
2480 return BFA_FALSE;
2481 }
2482
2483 /*
2484 * build i/o request message next
2485 */
2486 m->io_tag = cpu_to_be16(ioim->iotag);
2487 m->rport_hdl = ioim->itnim->rport->fw_handle;
2488 m->io_timeout = 0;
2489
2490 sge = &m->sges[0];
2491 sgpg = ioim->sgpg;
2492 sge_id = 0;
2493 sgpge = NULL;
2494 pgcumsz = 0;
2495 scsi_for_each_sg(cmnd, sg, ioim->nsges, i) {
2496 if (i == 0) {
2497 /* build inline IO SG element */
2498 addr = bfa_sgaddr_le(sg_dma_address(sg));
2499 sge->sga = *(union bfi_addr_u *) &addr;
2500 pgdlen = sg_dma_len(sg);
2501 sge->sg_len = pgdlen;
2502 sge->flags = (ioim->nsges > BFI_SGE_INLINE) ?
2503 BFI_SGE_DATA_CPL : BFI_SGE_DATA_LAST;
2504 bfa_sge_to_be(sge);
2505 sge++;
2506 } else {
2507 if (sge_id == 0)
2508 sgpge = sgpg->sgpg->sges;
2509
2510 addr = bfa_sgaddr_le(sg_dma_address(sg));
2511 sgpge->sga = *(union bfi_addr_u *) &addr;
2512 sgpge->sg_len = sg_dma_len(sg);
2513 pgcumsz += sgpge->sg_len;
2514
2515 /* set flags */
2516 if (i < (ioim->nsges - 1) &&
2517 sge_id < (BFI_SGPG_DATA_SGES - 1))
2518 sgpge->flags = BFI_SGE_DATA;
2519 else if (i < (ioim->nsges - 1))
2520 sgpge->flags = BFI_SGE_DATA_CPL;
2521 else
2522 sgpge->flags = BFI_SGE_DATA_LAST;
2523
2524 bfa_sge_to_le(sgpge);
2525
2526 sgpge++;
2527 if (i == (ioim->nsges - 1)) {
2528 sgpge->flags = BFI_SGE_PGDLEN;
2529 sgpge->sga.a32.addr_lo = 0;
2530 sgpge->sga.a32.addr_hi = 0;
2531 sgpge->sg_len = pgcumsz;
2532 bfa_sge_to_le(sgpge);
2533 } else if (++sge_id == BFI_SGPG_DATA_SGES) {
2534 sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg);
2535 sgpge->flags = BFI_SGE_LINK;
2536 sgpge->sga = sgpg->sgpg_pa;
2537 sgpge->sg_len = pgcumsz;
2538 bfa_sge_to_le(sgpge);
2539 sge_id = 0;
2540 pgcumsz = 0;
2541 }
2542 }
2543 }
2544
2545 if (ioim->nsges > BFI_SGE_INLINE) {
2546 sge->sga = ioim->sgpg->sgpg_pa;
2547 } else {
2548 sge->sga.a32.addr_lo = 0;
2549 sge->sga.a32.addr_hi = 0;
2550 }
2551 sge->sg_len = pgdlen;
2552 sge->flags = BFI_SGE_PGDLEN;
2553 bfa_sge_to_be(sge);
2554
2555 /*
2556 * set up I/O command parameters
2557 */
2558 m->cmnd = cmnd_z0;
2559 int_to_scsilun(cmnd->device->lun, &m->cmnd.lun);
2560 dmadir = cmnd->sc_data_direction;
2561 if (dmadir == DMA_TO_DEVICE)
2562 m->cmnd.iodir = FCP_IODIR_WRITE;
2563 else if (dmadir == DMA_FROM_DEVICE)
2564 m->cmnd.iodir = FCP_IODIR_READ;
2565 else
2566 m->cmnd.iodir = FCP_IODIR_NONE;
2567
2568 m->cmnd.cdb = *(struct scsi_cdb_s *) cmnd->cmnd;
2569 fcp_dl = scsi_bufflen(cmnd);
2570 m->cmnd.fcp_dl = cpu_to_be32(fcp_dl);
2571
2572 /*
2573 * set up I/O message header
2574 */
2575 switch (m->cmnd.iodir) {
2576 case FCP_IODIR_READ:
2577 bfi_h2i_set(m->mh, BFI_MC_IOIM_READ, 0, bfa_fn_lpu(ioim->bfa));
2578 bfa_stats(itnim, input_reqs);
2579 ioim->itnim->stats.rd_throughput += fcp_dl;
2580 break;
2581 case FCP_IODIR_WRITE:
2582 bfi_h2i_set(m->mh, BFI_MC_IOIM_WRITE, 0, bfa_fn_lpu(ioim->bfa));
2583 bfa_stats(itnim, output_reqs);
2584 ioim->itnim->stats.wr_throughput += fcp_dl;
2585 break;
2586 case FCP_IODIR_RW:
2587 bfa_stats(itnim, input_reqs);
2588 bfa_stats(itnim, output_reqs);
2589 default:
2590 bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa));
2591 }
2592 if (itnim->seq_rec ||
2593 (scsi_bufflen(cmnd) & (sizeof(u32) - 1)))
2594 bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa));
2595
2596 /*
2597 * queue I/O message to firmware
2598 */
2599 bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh);
2600 return BFA_TRUE;
2601 }
2602
2603 /*
2604 * Setup any additional SG pages needed.Inline SG element is setup
2605 * at queuing time.
2606 */
2607 static bfa_boolean_t
2608 bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim)
2609 {
2610 u16 nsgpgs;
2611
2612 WARN_ON(ioim->nsges <= BFI_SGE_INLINE);
2613
2614 /*
2615 * allocate SG pages needed
2616 */
2617 nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
2618 if (!nsgpgs)
2619 return BFA_TRUE;
2620
2621 if (bfa_sgpg_malloc(ioim->bfa, &ioim->sgpg_q, nsgpgs)
2622 != BFA_STATUS_OK) {
2623 bfa_sgpg_wait(ioim->bfa, &ioim->iosp->sgpg_wqe, nsgpgs);
2624 return BFA_FALSE;
2625 }
2626
2627 ioim->nsgpgs = nsgpgs;
2628 ioim->sgpg = bfa_q_first(&ioim->sgpg_q);
2629
2630 return BFA_TRUE;
2631 }
2632
2633 /*
2634 * Send I/O abort request to firmware.
2635 */
2636 static bfa_boolean_t
2637 bfa_ioim_send_abort(struct bfa_ioim_s *ioim)
2638 {
2639 struct bfi_ioim_abort_req_s *m;
2640 enum bfi_ioim_h2i msgop;
2641
2642 /*
2643 * check for room in queue to send request now
2644 */
2645 m = bfa_reqq_next(ioim->bfa, ioim->reqq);
2646 if (!m)
2647 return BFA_FALSE;
2648
2649 /*
2650 * build i/o request message next
2651 */
2652 if (ioim->iosp->abort_explicit)
2653 msgop = BFI_IOIM_H2I_IOABORT_REQ;
2654 else
2655 msgop = BFI_IOIM_H2I_IOCLEANUP_REQ;
2656
2657 bfi_h2i_set(m->mh, BFI_MC_IOIM, msgop, bfa_fn_lpu(ioim->bfa));
2658 m->io_tag = cpu_to_be16(ioim->iotag);
2659 m->abort_tag = ++ioim->abort_tag;
2660
2661 /*
2662 * queue I/O message to firmware
2663 */
2664 bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh);
2665 return BFA_TRUE;
2666 }
2667
2668 /*
2669 * Call to resume any I/O requests waiting for room in request queue.
2670 */
2671 static void
2672 bfa_ioim_qresume(void *cbarg)
2673 {
2674 struct bfa_ioim_s *ioim = cbarg;
2675
2676 bfa_stats(ioim->itnim, qresumes);
2677 bfa_sm_send_event(ioim, BFA_IOIM_SM_QRESUME);
2678 }
2679
2680
2681 static void
2682 bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim)
2683 {
2684 /*
2685 * Move IO from itnim queue to fcpim global queue since itnim will be
2686 * freed.
2687 */
2688 list_del(&ioim->qe);
2689 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
2690
2691 if (!ioim->iosp->tskim) {
2692 if (ioim->fcpim->delay_comp && ioim->itnim->iotov_active) {
2693 bfa_cb_dequeue(&ioim->hcb_qe);
2694 list_del(&ioim->qe);
2695 list_add_tail(&ioim->qe, &ioim->itnim->delay_comp_q);
2696 }
2697 bfa_itnim_iodone(ioim->itnim);
2698 } else
2699 bfa_wc_down(&ioim->iosp->tskim->wc);
2700 }
2701
2702 static bfa_boolean_t
2703 bfa_ioim_is_abortable(struct bfa_ioim_s *ioim)
2704 {
2705 if ((bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit) &&
2706 (!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim))) ||
2707 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort)) ||
2708 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort_qfull)) ||
2709 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb)) ||
2710 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb_free)) ||
2711 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_resfree)))
2712 return BFA_FALSE;
2713
2714 return BFA_TRUE;
2715 }
2716
2717 void
2718 bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov)
2719 {
2720 /*
2721 * If path tov timer expired, failback with PATHTOV status - these
2722 * IO requests are not normally retried by IO stack.
2723 *
2724 * Otherwise device cameback online and fail it with normal failed
2725 * status so that IO stack retries these failed IO requests.
2726 */
2727 if (iotov)
2728 ioim->io_cbfn = __bfa_cb_ioim_pathtov;
2729 else {
2730 ioim->io_cbfn = __bfa_cb_ioim_failed;
2731 bfa_stats(ioim->itnim, iocom_nexus_abort);
2732 }
2733 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
2734
2735 /*
2736 * Move IO to fcpim global queue since itnim will be
2737 * freed.
2738 */
2739 list_del(&ioim->qe);
2740 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
2741 }
2742
2743
2744 /*
2745 * Memory allocation and initialization.
2746 */
2747 void
2748 bfa_ioim_attach(struct bfa_fcpim_s *fcpim)
2749 {
2750 struct bfa_ioim_s *ioim;
2751 struct bfa_fcp_mod_s *fcp = fcpim->fcp;
2752 struct bfa_ioim_sp_s *iosp;
2753 u16 i;
2754
2755 /*
2756 * claim memory first
2757 */
2758 ioim = (struct bfa_ioim_s *) bfa_mem_kva_curp(fcp);
2759 fcpim->ioim_arr = ioim;
2760 bfa_mem_kva_curp(fcp) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs);
2761
2762 iosp = (struct bfa_ioim_sp_s *) bfa_mem_kva_curp(fcp);
2763 fcpim->ioim_sp_arr = iosp;
2764 bfa_mem_kva_curp(fcp) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs);
2765
2766 /*
2767 * Initialize ioim free queues
2768 */
2769 INIT_LIST_HEAD(&fcpim->ioim_resfree_q);
2770 INIT_LIST_HEAD(&fcpim->ioim_comp_q);
2771
2772 for (i = 0; i < fcpim->fcp->num_ioim_reqs;
2773 i++, ioim++, iosp++) {
2774 /*
2775 * initialize IOIM
2776 */
2777 memset(ioim, 0, sizeof(struct bfa_ioim_s));
2778 ioim->iotag = i;
2779 ioim->bfa = fcpim->bfa;
2780 ioim->fcpim = fcpim;
2781 ioim->iosp = iosp;
2782 INIT_LIST_HEAD(&ioim->sgpg_q);
2783 bfa_reqq_winit(&ioim->iosp->reqq_wait,
2784 bfa_ioim_qresume, ioim);
2785 bfa_sgpg_winit(&ioim->iosp->sgpg_wqe,
2786 bfa_ioim_sgpg_alloced, ioim);
2787 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
2788 }
2789 }
2790
2791 void
2792 bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
2793 {
2794 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
2795 struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
2796 struct bfa_ioim_s *ioim;
2797 u16 iotag;
2798 enum bfa_ioim_event evt = BFA_IOIM_SM_COMP;
2799
2800 iotag = be16_to_cpu(rsp->io_tag);
2801
2802 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
2803 WARN_ON(ioim->iotag != iotag);
2804
2805 bfa_trc(ioim->bfa, ioim->iotag);
2806 bfa_trc(ioim->bfa, rsp->io_status);
2807 bfa_trc(ioim->bfa, rsp->reuse_io_tag);
2808
2809 if (bfa_sm_cmp_state(ioim, bfa_ioim_sm_active))
2810 ioim->iosp->comp_rspmsg = *m;
2811
2812 switch (rsp->io_status) {
2813 case BFI_IOIM_STS_OK:
2814 bfa_stats(ioim->itnim, iocomp_ok);
2815 if (rsp->reuse_io_tag == 0)
2816 evt = BFA_IOIM_SM_DONE;
2817 else
2818 evt = BFA_IOIM_SM_COMP;
2819 break;
2820
2821 case BFI_IOIM_STS_TIMEDOUT:
2822 bfa_stats(ioim->itnim, iocomp_timedout);
2823 case BFI_IOIM_STS_ABORTED:
2824 rsp->io_status = BFI_IOIM_STS_ABORTED;
2825 bfa_stats(ioim->itnim, iocomp_aborted);
2826 if (rsp->reuse_io_tag == 0)
2827 evt = BFA_IOIM_SM_DONE;
2828 else
2829 evt = BFA_IOIM_SM_COMP;
2830 break;
2831
2832 case BFI_IOIM_STS_PROTO_ERR:
2833 bfa_stats(ioim->itnim, iocom_proto_err);
2834 WARN_ON(!rsp->reuse_io_tag);
2835 evt = BFA_IOIM_SM_COMP;
2836 break;
2837
2838 case BFI_IOIM_STS_SQER_NEEDED:
2839 bfa_stats(ioim->itnim, iocom_sqer_needed);
2840 WARN_ON(rsp->reuse_io_tag != 0);
2841 evt = BFA_IOIM_SM_SQRETRY;
2842 break;
2843
2844 case BFI_IOIM_STS_RES_FREE:
2845 bfa_stats(ioim->itnim, iocom_res_free);
2846 evt = BFA_IOIM_SM_FREE;
2847 break;
2848
2849 case BFI_IOIM_STS_HOST_ABORTED:
2850 bfa_stats(ioim->itnim, iocom_hostabrts);
2851 if (rsp->abort_tag != ioim->abort_tag) {
2852 bfa_trc(ioim->bfa, rsp->abort_tag);
2853 bfa_trc(ioim->bfa, ioim->abort_tag);
2854 return;
2855 }
2856
2857 if (rsp->reuse_io_tag)
2858 evt = BFA_IOIM_SM_ABORT_COMP;
2859 else
2860 evt = BFA_IOIM_SM_ABORT_DONE;
2861 break;
2862
2863 case BFI_IOIM_STS_UTAG:
2864 bfa_stats(ioim->itnim, iocom_utags);
2865 evt = BFA_IOIM_SM_COMP_UTAG;
2866 break;
2867
2868 default:
2869 WARN_ON(1);
2870 }
2871
2872 bfa_sm_send_event(ioim, evt);
2873 }
2874
2875 void
2876 bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
2877 {
2878 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
2879 struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
2880 struct bfa_ioim_s *ioim;
2881 u16 iotag;
2882
2883 iotag = be16_to_cpu(rsp->io_tag);
2884
2885 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
2886 WARN_ON(ioim->iotag != iotag);
2887
2888 bfa_ioim_cb_profile_comp(fcpim, ioim);
2889
2890 bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
2891 }
2892
2893 /*
2894 * Called by itnim to clean up IO while going offline.
2895 */
2896 void
2897 bfa_ioim_cleanup(struct bfa_ioim_s *ioim)
2898 {
2899 bfa_trc(ioim->bfa, ioim->iotag);
2900 bfa_stats(ioim->itnim, io_cleanups);
2901
2902 ioim->iosp->tskim = NULL;
2903 bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP);
2904 }
2905
2906 void
2907 bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim, struct bfa_tskim_s *tskim)
2908 {
2909 bfa_trc(ioim->bfa, ioim->iotag);
2910 bfa_stats(ioim->itnim, io_tmaborts);
2911
2912 ioim->iosp->tskim = tskim;
2913 bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP);
2914 }
2915
2916 /*
2917 * IOC failure handling.
2918 */
2919 void
2920 bfa_ioim_iocdisable(struct bfa_ioim_s *ioim)
2921 {
2922 bfa_trc(ioim->bfa, ioim->iotag);
2923 bfa_stats(ioim->itnim, io_iocdowns);
2924 bfa_sm_send_event(ioim, BFA_IOIM_SM_HWFAIL);
2925 }
2926
2927 /*
2928 * IO offline TOV popped. Fail the pending IO.
2929 */
2930 void
2931 bfa_ioim_tov(struct bfa_ioim_s *ioim)
2932 {
2933 bfa_trc(ioim->bfa, ioim->iotag);
2934 bfa_sm_send_event(ioim, BFA_IOIM_SM_IOTOV);
2935 }
2936
2937
2938 /*
2939 * Allocate IOIM resource for initiator mode I/O request.
2940 */
2941 struct bfa_ioim_s *
2942 bfa_ioim_alloc(struct bfa_s *bfa, struct bfad_ioim_s *dio,
2943 struct bfa_itnim_s *itnim, u16 nsges)
2944 {
2945 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
2946 struct bfa_ioim_s *ioim;
2947 struct bfa_iotag_s *iotag = NULL;
2948
2949 /*
2950 * alocate IOIM resource
2951 */
2952 bfa_q_deq(&fcpim->fcp->iotag_ioim_free_q, &iotag);
2953 if (!iotag) {
2954 bfa_stats(itnim, no_iotags);
2955 return NULL;
2956 }
2957
2958 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag->tag);
2959
2960 ioim->dio = dio;
2961 ioim->itnim = itnim;
2962 ioim->nsges = nsges;
2963 ioim->nsgpgs = 0;
2964
2965 bfa_stats(itnim, total_ios);
2966 fcpim->ios_active++;
2967
2968 list_add_tail(&ioim->qe, &itnim->io_q);
2969
2970 return ioim;
2971 }
2972
2973 void
2974 bfa_ioim_free(struct bfa_ioim_s *ioim)
2975 {
2976 struct bfa_fcpim_s *fcpim = ioim->fcpim;
2977 struct bfa_iotag_s *iotag;
2978
2979 if (ioim->nsgpgs > 0)
2980 bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs);
2981
2982 bfa_stats(ioim->itnim, io_comps);
2983 fcpim->ios_active--;
2984
2985 ioim->iotag &= BFA_IOIM_IOTAG_MASK;
2986
2987 WARN_ON(!(ioim->iotag <
2988 (fcpim->fcp->num_ioim_reqs + fcpim->fcp->num_fwtio_reqs)));
2989 iotag = BFA_IOTAG_FROM_TAG(fcpim->fcp, ioim->iotag);
2990
2991 if (ioim->iotag < fcpim->fcp->num_ioim_reqs)
2992 list_add_tail(&iotag->qe, &fcpim->fcp->iotag_ioim_free_q);
2993 else
2994 list_add_tail(&iotag->qe, &fcpim->fcp->iotag_tio_free_q);
2995
2996 list_del(&ioim->qe);
2997 }
2998
2999 void
3000 bfa_ioim_start(struct bfa_ioim_s *ioim)
3001 {
3002 bfa_ioim_cb_profile_start(ioim->fcpim, ioim);
3003
3004 /*
3005 * Obtain the queue over which this request has to be issued
3006 */
3007 ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ?
3008 BFA_FALSE : bfa_itnim_get_reqq(ioim);
3009
3010 bfa_sm_send_event(ioim, BFA_IOIM_SM_START);
3011 }
3012
3013 /*
3014 * Driver I/O abort request.
3015 */
3016 bfa_status_t
3017 bfa_ioim_abort(struct bfa_ioim_s *ioim)
3018 {
3019
3020 bfa_trc(ioim->bfa, ioim->iotag);
3021
3022 if (!bfa_ioim_is_abortable(ioim))
3023 return BFA_STATUS_FAILED;
3024
3025 bfa_stats(ioim->itnim, io_aborts);
3026 bfa_sm_send_event(ioim, BFA_IOIM_SM_ABORT);
3027
3028 return BFA_STATUS_OK;
3029 }
3030
3031 /*
3032 * BFA TSKIM state machine functions
3033 */
3034
3035 /*
3036 * Task management command beginning state.
3037 */
3038 static void
3039 bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3040 {
3041 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3042
3043 switch (event) {
3044 case BFA_TSKIM_SM_START:
3045 bfa_sm_set_state(tskim, bfa_tskim_sm_active);
3046 bfa_tskim_gather_ios(tskim);
3047
3048 /*
3049 * If device is offline, do not send TM on wire. Just cleanup
3050 * any pending IO requests and complete TM request.
3051 */
3052 if (!bfa_itnim_is_online(tskim->itnim)) {
3053 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3054 tskim->tsk_status = BFI_TSKIM_STS_OK;
3055 bfa_tskim_cleanup_ios(tskim);
3056 return;
3057 }
3058
3059 if (!bfa_tskim_send(tskim)) {
3060 bfa_sm_set_state(tskim, bfa_tskim_sm_qfull);
3061 bfa_stats(tskim->itnim, tm_qwait);
3062 bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
3063 &tskim->reqq_wait);
3064 }
3065 break;
3066
3067 default:
3068 bfa_sm_fault(tskim->bfa, event);
3069 }
3070 }
3071
3072 /*
3073 * TM command is active, awaiting completion from firmware to
3074 * cleanup IO requests in TM scope.
3075 */
3076 static void
3077 bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3078 {
3079 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3080
3081 switch (event) {
3082 case BFA_TSKIM_SM_DONE:
3083 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3084 bfa_tskim_cleanup_ios(tskim);
3085 break;
3086
3087 case BFA_TSKIM_SM_CLEANUP:
3088 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
3089 if (!bfa_tskim_send_abort(tskim)) {
3090 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull);
3091 bfa_stats(tskim->itnim, tm_qwait);
3092 bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
3093 &tskim->reqq_wait);
3094 }
3095 break;
3096
3097 case BFA_TSKIM_SM_HWFAIL:
3098 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3099 bfa_tskim_iocdisable_ios(tskim);
3100 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3101 break;
3102
3103 default:
3104 bfa_sm_fault(tskim->bfa, event);
3105 }
3106 }
3107
3108 /*
3109 * An active TM is being cleaned up since ITN is offline. Awaiting cleanup
3110 * completion event from firmware.
3111 */
3112 static void
3113 bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3114 {
3115 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3116
3117 switch (event) {
3118 case BFA_TSKIM_SM_DONE:
3119 /*
3120 * Ignore and wait for ABORT completion from firmware.
3121 */
3122 break;
3123
3124 case BFA_TSKIM_SM_UTAG:
3125 case BFA_TSKIM_SM_CLEANUP_DONE:
3126 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3127 bfa_tskim_cleanup_ios(tskim);
3128 break;
3129
3130 case BFA_TSKIM_SM_HWFAIL:
3131 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3132 bfa_tskim_iocdisable_ios(tskim);
3133 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3134 break;
3135
3136 default:
3137 bfa_sm_fault(tskim->bfa, event);
3138 }
3139 }
3140
3141 static void
3142 bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3143 {
3144 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3145
3146 switch (event) {
3147 case BFA_TSKIM_SM_IOS_DONE:
3148 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3149 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done);
3150 break;
3151
3152 case BFA_TSKIM_SM_CLEANUP:
3153 /*
3154 * Ignore, TM command completed on wire.
3155 * Notify TM conmpletion on IO cleanup completion.
3156 */
3157 break;
3158
3159 case BFA_TSKIM_SM_HWFAIL:
3160 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3161 bfa_tskim_iocdisable_ios(tskim);
3162 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3163 break;
3164
3165 default:
3166 bfa_sm_fault(tskim->bfa, event);
3167 }
3168 }
3169
3170 /*
3171 * Task management command is waiting for room in request CQ
3172 */
3173 static void
3174 bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3175 {
3176 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3177
3178 switch (event) {
3179 case BFA_TSKIM_SM_QRESUME:
3180 bfa_sm_set_state(tskim, bfa_tskim_sm_active);
3181 bfa_tskim_send(tskim);
3182 break;
3183
3184 case BFA_TSKIM_SM_CLEANUP:
3185 /*
3186 * No need to send TM on wire since ITN is offline.
3187 */
3188 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3189 bfa_reqq_wcancel(&tskim->reqq_wait);
3190 bfa_tskim_cleanup_ios(tskim);
3191 break;
3192
3193 case BFA_TSKIM_SM_HWFAIL:
3194 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3195 bfa_reqq_wcancel(&tskim->reqq_wait);
3196 bfa_tskim_iocdisable_ios(tskim);
3197 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3198 break;
3199
3200 default:
3201 bfa_sm_fault(tskim->bfa, event);
3202 }
3203 }
3204
3205 /*
3206 * Task management command is active, awaiting for room in request CQ
3207 * to send clean up request.
3208 */
3209 static void
3210 bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
3211 enum bfa_tskim_event event)
3212 {
3213 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3214
3215 switch (event) {
3216 case BFA_TSKIM_SM_DONE:
3217 bfa_reqq_wcancel(&tskim->reqq_wait);
3218 /*
3219 * Fall through !!!
3220 */
3221 case BFA_TSKIM_SM_QRESUME:
3222 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
3223 bfa_tskim_send_abort(tskim);
3224 break;
3225
3226 case BFA_TSKIM_SM_HWFAIL:
3227 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3228 bfa_reqq_wcancel(&tskim->reqq_wait);
3229 bfa_tskim_iocdisable_ios(tskim);
3230 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3231 break;
3232
3233 default:
3234 bfa_sm_fault(tskim->bfa, event);
3235 }
3236 }
3237
3238 /*
3239 * BFA callback is pending
3240 */
3241 static void
3242 bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3243 {
3244 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3245
3246 switch (event) {
3247 case BFA_TSKIM_SM_HCB:
3248 bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
3249 bfa_tskim_free(tskim);
3250 break;
3251
3252 case BFA_TSKIM_SM_CLEANUP:
3253 bfa_tskim_notify_comp(tskim);
3254 break;
3255
3256 case BFA_TSKIM_SM_HWFAIL:
3257 break;
3258
3259 default:
3260 bfa_sm_fault(tskim->bfa, event);
3261 }
3262 }
3263
3264 static void
3265 __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete)
3266 {
3267 struct bfa_tskim_s *tskim = cbarg;
3268
3269 if (!complete) {
3270 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
3271 return;
3272 }
3273
3274 bfa_stats(tskim->itnim, tm_success);
3275 bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status);
3276 }
3277
3278 static void
3279 __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete)
3280 {
3281 struct bfa_tskim_s *tskim = cbarg;
3282
3283 if (!complete) {
3284 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
3285 return;
3286 }
3287
3288 bfa_stats(tskim->itnim, tm_failures);
3289 bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk,
3290 BFI_TSKIM_STS_FAILED);
3291 }
3292
3293 static bfa_boolean_t
3294 bfa_tskim_match_scope(struct bfa_tskim_s *tskim, struct scsi_lun lun)
3295 {
3296 switch (tskim->tm_cmnd) {
3297 case FCP_TM_TARGET_RESET:
3298 return BFA_TRUE;
3299
3300 case FCP_TM_ABORT_TASK_SET:
3301 case FCP_TM_CLEAR_TASK_SET:
3302 case FCP_TM_LUN_RESET:
3303 case FCP_TM_CLEAR_ACA:
3304 return !memcmp(&tskim->lun, &lun, sizeof(lun));
3305
3306 default:
3307 WARN_ON(1);
3308 }
3309
3310 return BFA_FALSE;
3311 }
3312
3313 /*
3314 * Gather affected IO requests and task management commands.
3315 */
3316 static void
3317 bfa_tskim_gather_ios(struct bfa_tskim_s *tskim)
3318 {
3319 struct bfa_itnim_s *itnim = tskim->itnim;
3320 struct bfa_ioim_s *ioim;
3321 struct list_head *qe, *qen;
3322 struct scsi_cmnd *cmnd;
3323 struct scsi_lun scsilun;
3324
3325 INIT_LIST_HEAD(&tskim->io_q);
3326
3327 /*
3328 * Gather any active IO requests first.
3329 */
3330 list_for_each_safe(qe, qen, &itnim->io_q) {
3331 ioim = (struct bfa_ioim_s *) qe;
3332 cmnd = (struct scsi_cmnd *) ioim->dio;
3333 int_to_scsilun(cmnd->device->lun, &scsilun);
3334 if (bfa_tskim_match_scope(tskim, scsilun)) {
3335 list_del(&ioim->qe);
3336 list_add_tail(&ioim->qe, &tskim->io_q);
3337 }
3338 }
3339
3340 /*
3341 * Failback any pending IO requests immediately.
3342 */
3343 list_for_each_safe(qe, qen, &itnim->pending_q) {
3344 ioim = (struct bfa_ioim_s *) qe;
3345 cmnd = (struct scsi_cmnd *) ioim->dio;
3346 int_to_scsilun(cmnd->device->lun, &scsilun);
3347 if (bfa_tskim_match_scope(tskim, scsilun)) {
3348 list_del(&ioim->qe);
3349 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
3350 bfa_ioim_tov(ioim);
3351 }
3352 }
3353 }
3354
3355 /*
3356 * IO cleanup completion
3357 */
3358 static void
3359 bfa_tskim_cleanp_comp(void *tskim_cbarg)
3360 {
3361 struct bfa_tskim_s *tskim = tskim_cbarg;
3362
3363 bfa_stats(tskim->itnim, tm_io_comps);
3364 bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE);
3365 }
3366
3367 /*
3368 * Gather affected IO requests and task management commands.
3369 */
3370 static void
3371 bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim)
3372 {
3373 struct bfa_ioim_s *ioim;
3374 struct list_head *qe, *qen;
3375
3376 bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim);
3377
3378 list_for_each_safe(qe, qen, &tskim->io_q) {
3379 ioim = (struct bfa_ioim_s *) qe;
3380 bfa_wc_up(&tskim->wc);
3381 bfa_ioim_cleanup_tm(ioim, tskim);
3382 }
3383
3384 bfa_wc_wait(&tskim->wc);
3385 }
3386
3387 /*
3388 * Send task management request to firmware.
3389 */
3390 static bfa_boolean_t
3391 bfa_tskim_send(struct bfa_tskim_s *tskim)
3392 {
3393 struct bfa_itnim_s *itnim = tskim->itnim;
3394 struct bfi_tskim_req_s *m;
3395
3396 /*
3397 * check for room in queue to send request now
3398 */
3399 m = bfa_reqq_next(tskim->bfa, itnim->reqq);
3400 if (!m)
3401 return BFA_FALSE;
3402
3403 /*
3404 * build i/o request message next
3405 */
3406 bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ,
3407 bfa_fn_lpu(tskim->bfa));
3408
3409 m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
3410 m->itn_fhdl = tskim->itnim->rport->fw_handle;
3411 m->t_secs = tskim->tsecs;
3412 m->lun = tskim->lun;
3413 m->tm_flags = tskim->tm_cmnd;
3414
3415 /*
3416 * queue I/O message to firmware
3417 */
3418 bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh);
3419 return BFA_TRUE;
3420 }
3421
3422 /*
3423 * Send abort request to cleanup an active TM to firmware.
3424 */
3425 static bfa_boolean_t
3426 bfa_tskim_send_abort(struct bfa_tskim_s *tskim)
3427 {
3428 struct bfa_itnim_s *itnim = tskim->itnim;
3429 struct bfi_tskim_abortreq_s *m;
3430
3431 /*
3432 * check for room in queue to send request now
3433 */
3434 m = bfa_reqq_next(tskim->bfa, itnim->reqq);
3435 if (!m)
3436 return BFA_FALSE;
3437
3438 /*
3439 * build i/o request message next
3440 */
3441 bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ,
3442 bfa_fn_lpu(tskim->bfa));
3443
3444 m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
3445
3446 /*
3447 * queue I/O message to firmware
3448 */
3449 bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh);
3450 return BFA_TRUE;
3451 }
3452
3453 /*
3454 * Call to resume task management cmnd waiting for room in request queue.
3455 */
3456 static void
3457 bfa_tskim_qresume(void *cbarg)
3458 {
3459 struct bfa_tskim_s *tskim = cbarg;
3460
3461 bfa_stats(tskim->itnim, tm_qresumes);
3462 bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME);
3463 }
3464
3465 /*
3466 * Cleanup IOs associated with a task mangement command on IOC failures.
3467 */
3468 static void
3469 bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim)
3470 {
3471 struct bfa_ioim_s *ioim;
3472 struct list_head *qe, *qen;
3473
3474 list_for_each_safe(qe, qen, &tskim->io_q) {
3475 ioim = (struct bfa_ioim_s *) qe;
3476 bfa_ioim_iocdisable(ioim);
3477 }
3478 }
3479
3480 /*
3481 * Notification on completions from related ioim.
3482 */
3483 void
3484 bfa_tskim_iodone(struct bfa_tskim_s *tskim)
3485 {
3486 bfa_wc_down(&tskim->wc);
3487 }
3488
3489 /*
3490 * Handle IOC h/w failure notification from itnim.
3491 */
3492 void
3493 bfa_tskim_iocdisable(struct bfa_tskim_s *tskim)
3494 {
3495 tskim->notify = BFA_FALSE;
3496 bfa_stats(tskim->itnim, tm_iocdowns);
3497 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL);
3498 }
3499
3500 /*
3501 * Cleanup TM command and associated IOs as part of ITNIM offline.
3502 */
3503 void
3504 bfa_tskim_cleanup(struct bfa_tskim_s *tskim)
3505 {
3506 tskim->notify = BFA_TRUE;
3507 bfa_stats(tskim->itnim, tm_cleanups);
3508 bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP);
3509 }
3510
3511 /*
3512 * Memory allocation and initialization.
3513 */
3514 void
3515 bfa_tskim_attach(struct bfa_fcpim_s *fcpim)
3516 {
3517 struct bfa_tskim_s *tskim;
3518 struct bfa_fcp_mod_s *fcp = fcpim->fcp;
3519 u16 i;
3520
3521 INIT_LIST_HEAD(&fcpim->tskim_free_q);
3522 INIT_LIST_HEAD(&fcpim->tskim_unused_q);
3523
3524 tskim = (struct bfa_tskim_s *) bfa_mem_kva_curp(fcp);
3525 fcpim->tskim_arr = tskim;
3526
3527 for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) {
3528 /*
3529 * initialize TSKIM
3530 */
3531 memset(tskim, 0, sizeof(struct bfa_tskim_s));
3532 tskim->tsk_tag = i;
3533 tskim->bfa = fcpim->bfa;
3534 tskim->fcpim = fcpim;
3535 tskim->notify = BFA_FALSE;
3536 bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume,
3537 tskim);
3538 bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
3539
3540 list_add_tail(&tskim->qe, &fcpim->tskim_free_q);
3541 }
3542
3543 bfa_mem_kva_curp(fcp) = (u8 *) tskim;
3544 }
3545
3546 void
3547 bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
3548 {
3549 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3550 struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m;
3551 struct bfa_tskim_s *tskim;
3552 u16 tsk_tag = be16_to_cpu(rsp->tsk_tag);
3553
3554 tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag);
3555 WARN_ON(tskim->tsk_tag != tsk_tag);
3556
3557 tskim->tsk_status = rsp->tsk_status;
3558
3559 /*
3560 * Firmware sends BFI_TSKIM_STS_ABORTED status for abort
3561 * requests. All other statuses are for normal completions.
3562 */
3563 if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) {
3564 bfa_stats(tskim->itnim, tm_cleanup_comps);
3565 bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE);
3566 } else if (rsp->tsk_status == BFI_TSKIM_STS_UTAG) {
3567 bfa_sm_send_event(tskim, BFA_TSKIM_SM_UTAG);
3568 } else {
3569 bfa_stats(tskim->itnim, tm_fw_rsps);
3570 bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
3571 }
3572 }
3573
3574
3575 struct bfa_tskim_s *
3576 bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk)
3577 {
3578 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3579 struct bfa_tskim_s *tskim;
3580
3581 bfa_q_deq(&fcpim->tskim_free_q, &tskim);
3582
3583 if (tskim)
3584 tskim->dtsk = dtsk;
3585
3586 return tskim;
3587 }
3588
3589 void
3590 bfa_tskim_free(struct bfa_tskim_s *tskim)
3591 {
3592 WARN_ON(!bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe));
3593 list_del(&tskim->qe);
3594 list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q);
3595 }
3596
3597 /*
3598 * Start a task management command.
3599 *
3600 * @param[in] tskim BFA task management command instance
3601 * @param[in] itnim i-t nexus for the task management command
3602 * @param[in] lun lun, if applicable
3603 * @param[in] tm_cmnd Task management command code.
3604 * @param[in] t_secs Timeout in seconds
3605 *
3606 * @return None.
3607 */
3608 void
3609 bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim,
3610 struct scsi_lun lun,
3611 enum fcp_tm_cmnd tm_cmnd, u8 tsecs)
3612 {
3613 tskim->itnim = itnim;
3614 tskim->lun = lun;
3615 tskim->tm_cmnd = tm_cmnd;
3616 tskim->tsecs = tsecs;
3617 tskim->notify = BFA_FALSE;
3618 bfa_stats(itnim, tm_cmnds);
3619
3620 list_add_tail(&tskim->qe, &itnim->tsk_q);
3621 bfa_sm_send_event(tskim, BFA_TSKIM_SM_START);
3622 }
3623
3624 void
3625 bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw)
3626 {
3627 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3628 struct list_head *qe;
3629 int i;
3630
3631 for (i = 0; i < (fcpim->num_tskim_reqs - num_tskim_fw); i++) {
3632 bfa_q_deq_tail(&fcpim->tskim_free_q, &qe);
3633 list_add_tail(qe, &fcpim->tskim_unused_q);
3634 }
3635 }
3636
3637 /* BFA FCP module - parent module for fcpim */
3638
3639 BFA_MODULE(fcp);
3640
3641 static void
3642 bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
3643 struct bfa_s *bfa)
3644 {
3645 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3646 struct bfa_mem_kva_s *fcp_kva = BFA_MEM_FCP_KVA(bfa);
3647 struct bfa_mem_dma_s *seg_ptr;
3648 u16 nsegs, idx, per_seg_ios, num_io_req;
3649 u32 km_len = 0;
3650
3651 /*
3652 * ZERO for num_ioim_reqs and num_fwtio_reqs is allowed config value.
3653 * So if the values are non zero, adjust them appropriately.
3654 */
3655 if (cfg->fwcfg.num_ioim_reqs &&
3656 cfg->fwcfg.num_ioim_reqs < BFA_IOIM_MIN)
3657 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MIN;
3658 else if (cfg->fwcfg.num_ioim_reqs > BFA_IOIM_MAX)
3659 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
3660
3661 if (cfg->fwcfg.num_fwtio_reqs > BFA_FWTIO_MAX)
3662 cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX;
3663
3664 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
3665 if (num_io_req > BFA_IO_MAX) {
3666 if (cfg->fwcfg.num_ioim_reqs && cfg->fwcfg.num_fwtio_reqs) {
3667 cfg->fwcfg.num_ioim_reqs = BFA_IO_MAX/2;
3668 cfg->fwcfg.num_fwtio_reqs = BFA_IO_MAX/2;
3669 } else if (cfg->fwcfg.num_fwtio_reqs)
3670 cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX;
3671 else
3672 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
3673 }
3674
3675 bfa_fcpim_meminfo(cfg, &km_len);
3676
3677 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
3678 km_len += num_io_req * sizeof(struct bfa_iotag_s);
3679 km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s);
3680
3681 /* dma memory */
3682 nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
3683 per_seg_ios = BFI_MEM_NREQS_SEG(BFI_IOIM_SNSLEN);
3684
3685 bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
3686 if (num_io_req >= per_seg_ios) {
3687 num_io_req -= per_seg_ios;
3688 bfa_mem_dma_setup(minfo, seg_ptr,
3689 per_seg_ios * BFI_IOIM_SNSLEN);
3690 } else
3691 bfa_mem_dma_setup(minfo, seg_ptr,
3692 num_io_req * BFI_IOIM_SNSLEN);
3693 }
3694
3695 /* kva memory */
3696 bfa_mem_kva_setup(minfo, fcp_kva, km_len);
3697 }
3698
3699 static void
3700 bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
3701 struct bfa_pcidev_s *pcidev)
3702 {
3703 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3704 struct bfa_mem_dma_s *seg_ptr;
3705 u16 idx, nsegs, num_io_req;
3706
3707 fcp->max_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
3708 fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
3709 fcp->num_fwtio_reqs = cfg->fwcfg.num_fwtio_reqs;
3710 fcp->num_itns = cfg->fwcfg.num_rports;
3711 fcp->bfa = bfa;
3712
3713 /*
3714 * Setup the pool of snsbase addr's, that is passed to fw as
3715 * part of bfi_iocfc_cfg_s.
3716 */
3717 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
3718 nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
3719
3720 bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
3721
3722 if (!bfa_mem_dma_virt(seg_ptr))
3723 break;
3724
3725 fcp->snsbase[idx].pa = bfa_mem_dma_phys(seg_ptr);
3726 fcp->snsbase[idx].kva = bfa_mem_dma_virt(seg_ptr);
3727 bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa);
3728 }
3729
3730 fcp->throttle_update_required = 1;
3731 bfa_fcpim_attach(fcp, bfad, cfg, pcidev);
3732
3733 bfa_iotag_attach(fcp);
3734
3735 fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp);
3736 bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr +
3737 (fcp->num_itns * sizeof(struct bfa_itn_s));
3738 memset(fcp->itn_arr, 0,
3739 (fcp->num_itns * sizeof(struct bfa_itn_s)));
3740 }
3741
3742 static void
3743 bfa_fcp_detach(struct bfa_s *bfa)
3744 {
3745 }
3746
3747 static void
3748 bfa_fcp_start(struct bfa_s *bfa)
3749 {
3750 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3751
3752 /*
3753 * bfa_init() with flash read is complete. now invalidate the stale
3754 * content of lun mask like unit attention, rp tag and lp tag.
3755 */
3756 bfa_ioim_lm_init(fcp->bfa);
3757 }
3758
3759 static void
3760 bfa_fcp_stop(struct bfa_s *bfa)
3761 {
3762 }
3763
3764 static void
3765 bfa_fcp_iocdisable(struct bfa_s *bfa)
3766 {
3767 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3768
3769 bfa_fcpim_iocdisable(fcp);
3770 }
3771
3772 void
3773 bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw)
3774 {
3775 struct bfa_fcp_mod_s *mod = BFA_FCP_MOD(bfa);
3776 struct list_head *qe;
3777 int i;
3778
3779 /* Update io throttle value only once during driver load time */
3780 if (!mod->throttle_update_required)
3781 return;
3782
3783 for (i = 0; i < (mod->num_ioim_reqs - num_ioim_fw); i++) {
3784 bfa_q_deq_tail(&mod->iotag_ioim_free_q, &qe);
3785 list_add_tail(qe, &mod->iotag_unused_q);
3786 }
3787
3788 if (mod->num_ioim_reqs != num_ioim_fw) {
3789 bfa_trc(bfa, mod->num_ioim_reqs);
3790 bfa_trc(bfa, num_ioim_fw);
3791 }
3792
3793 mod->max_ioim_reqs = max_ioim_fw;
3794 mod->num_ioim_reqs = num_ioim_fw;
3795 mod->throttle_update_required = 0;
3796 }
3797
3798 void
3799 bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
3800 void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m))
3801 {
3802 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3803 struct bfa_itn_s *itn;
3804
3805 itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag);
3806 itn->isr = isr;
3807 }
3808
3809 /*
3810 * Itn interrupt processing.
3811 */
3812 void
3813 bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
3814 {
3815 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3816 union bfi_itn_i2h_msg_u msg;
3817 struct bfa_itn_s *itn;
3818
3819 msg.msg = m;
3820 itn = BFA_ITN_FROM_TAG(fcp, msg.create_rsp->bfa_handle);
3821
3822 if (itn->isr)
3823 itn->isr(bfa, m);
3824 else
3825 WARN_ON(1);
3826 }
3827
3828 void
3829 bfa_iotag_attach(struct bfa_fcp_mod_s *fcp)
3830 {
3831 struct bfa_iotag_s *iotag;
3832 u16 num_io_req, i;
3833
3834 iotag = (struct bfa_iotag_s *) bfa_mem_kva_curp(fcp);
3835 fcp->iotag_arr = iotag;
3836
3837 INIT_LIST_HEAD(&fcp->iotag_ioim_free_q);
3838 INIT_LIST_HEAD(&fcp->iotag_tio_free_q);
3839 INIT_LIST_HEAD(&fcp->iotag_unused_q);
3840
3841 num_io_req = fcp->num_ioim_reqs + fcp->num_fwtio_reqs;
3842 for (i = 0; i < num_io_req; i++, iotag++) {
3843 memset(iotag, 0, sizeof(struct bfa_iotag_s));
3844 iotag->tag = i;
3845 if (i < fcp->num_ioim_reqs)
3846 list_add_tail(&iotag->qe, &fcp->iotag_ioim_free_q);
3847 else
3848 list_add_tail(&iotag->qe, &fcp->iotag_tio_free_q);
3849 }
3850
3851 bfa_mem_kva_curp(fcp) = (u8 *) iotag;
3852 }
3853
3854
3855 /**
3856 * To send config req, first try to use throttle value from flash
3857 * If 0, then use driver parameter
3858 * We need to use min(flash_val, drv_val) because
3859 * memory allocation was done based on this cfg'd value
3860 */
3861 u16
3862 bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param)
3863 {
3864 u16 tmp;
3865 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3866
3867 /*
3868 * If throttle value from flash is already in effect after driver is
3869 * loaded then until next load, always return current value instead
3870 * of actual flash value
3871 */
3872 if (!fcp->throttle_update_required)
3873 return (u16)fcp->num_ioim_reqs;
3874
3875 tmp = bfa_dconf_read_data_valid(bfa) ? bfa_fcpim_read_throttle(bfa) : 0;
3876 if (!tmp || (tmp > drv_cfg_param))
3877 tmp = drv_cfg_param;
3878
3879 return tmp;
3880 }
3881
3882 bfa_status_t
3883 bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value)
3884 {
3885 if (!bfa_dconf_get_min_cfg(bfa)) {
3886 BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.value = value;
3887 BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.is_valid = 1;
3888 return BFA_STATUS_OK;
3889 }
3890
3891 return BFA_STATUS_FAILED;
3892 }
3893
3894 u16
3895 bfa_fcpim_read_throttle(struct bfa_s *bfa)
3896 {
3897 struct bfa_throttle_cfg_s *throttle_cfg =
3898 &(BFA_DCONF_MOD(bfa)->dconf->throttle_cfg);
3899
3900 return ((!bfa_dconf_get_min_cfg(bfa)) ?
3901 ((throttle_cfg->is_valid == 1) ? (throttle_cfg->value) : 0) : 0);
3902 }
3903
3904 bfa_status_t
3905 bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value)
3906 {
3907 /* in min cfg no commands should run. */
3908 if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
3909 (!bfa_dconf_read_data_valid(bfa)))
3910 return BFA_STATUS_FAILED;
3911
3912 bfa_fcpim_write_throttle(bfa, value);
3913
3914 return bfa_dconf_update(bfa);
3915 }
3916
3917 bfa_status_t
3918 bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf)
3919 {
3920 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3921 struct bfa_defs_fcpim_throttle_s throttle;
3922
3923 if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
3924 (!bfa_dconf_read_data_valid(bfa)))
3925 return BFA_STATUS_FAILED;
3926
3927 memset(&throttle, 0, sizeof(struct bfa_defs_fcpim_throttle_s));
3928
3929 throttle.cur_value = (u16)(fcpim->fcp->num_ioim_reqs);
3930 throttle.cfg_value = bfa_fcpim_read_throttle(bfa);
3931 if (!throttle.cfg_value)
3932 throttle.cfg_value = throttle.cur_value;
3933 throttle.max_value = (u16)(fcpim->fcp->max_ioim_reqs);
3934 memcpy(buf, &throttle, sizeof(struct bfa_defs_fcpim_throttle_s));
3935
3936 return BFA_STATUS_OK;
3937 }
Linux with added FPC-III support