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