1 /*
2 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
3 * Copyright (c) 2014- QLogic Corporation.
4 * All rights reserved
5 * www.qlogic.com
6 *
7 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License (GPL) Version 2 as
11 * published by the Free Software Foundation
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19 #include "bfad_drv.h"
20 #include "bfa_modules.h"
21
22 BFA_TRC_FILE(HAL, FCPIM);
23
24 /*
25 * BFA ITNIM Related definitions
26 */
27 static void bfa_itnim_update_del_itn_stats(struct bfa_itnim_s *itnim);
28
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
bfa_fcpim_meminfo(struct bfa_iocfc_cfg_s * cfg,u32 * km_len)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
bfa_fcpim_attach(struct bfa_fcp_mod_s * fcp,void * bfad,struct bfa_iocfc_cfg_s * cfg,struct bfa_pcidev_s * pcidev)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 void
bfa_fcpim_iocdisable(struct bfa_fcp_mod_s * fcp)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
bfa_fcpim_path_tov_set(struct bfa_s * bfa,u16 path_tov)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
bfa_fcpim_path_tov_get(struct bfa_s * bfa)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
bfa_fcpim_add_stats(struct bfa_itnim_iostats_s * lstats,struct bfa_itnim_iostats_s * rstats)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
bfa_fcpim_port_iostats(struct bfa_s * bfa,struct bfa_itnim_iostats_s * stats,u8 lp_tag)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
bfa_ioim_profile_comp(struct bfa_ioim_s * ioim)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
bfa_ioim_profile_start(struct bfa_ioim_s * ioim)465 bfa_ioim_profile_start(struct bfa_ioim_s *ioim)
466 {
467 ioim->start_time = jiffies;
468 }
469
470 bfa_status_t
bfa_fcpim_profile_on(struct bfa_s * bfa,time64_t time)471 bfa_fcpim_profile_on(struct bfa_s *bfa, time64_t 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
bfa_fcpim_profile_off(struct bfa_s * bfa)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
bfa_fcpim_qdepth_get(struct bfa_s * bfa)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
bfa_itnim_sm_uninit(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_created(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_fwcreate(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_fwcreate_qfull(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_delete_pending(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_online(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_sler(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_cleanup_offline(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_cleanup_delete(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_fwdelete(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_fwdelete_qfull(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_offline(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_iocdisable(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_deleting(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_sm_deleting_qfull(struct bfa_itnim_s * itnim,enum bfa_itnim_event event)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
bfa_itnim_iocdisable_cleanup(struct bfa_itnim_s * itnim)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
bfa_itnim_cleanp_comp(void * itnim_cbarg)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
bfa_itnim_cleanup(struct bfa_itnim_s * itnim)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
__bfa_cb_itnim_online(void * cbarg,bfa_boolean_t complete)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
__bfa_cb_itnim_offline(void * cbarg,bfa_boolean_t complete)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
__bfa_cb_itnim_sler(void * cbarg,bfa_boolean_t complete)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
bfa_itnim_qresume(void * cbarg)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
bfa_itnim_iodone(struct bfa_itnim_s * itnim)1093 bfa_itnim_iodone(struct bfa_itnim_s *itnim)
1094 {
1095 bfa_wc_down(&itnim->wc);
1096 }
1097
1098 void
bfa_itnim_tskdone(struct bfa_itnim_s * itnim)1099 bfa_itnim_tskdone(struct bfa_itnim_s *itnim)
1100 {
1101 bfa_wc_down(&itnim->wc);
1102 }
1103
1104 void
bfa_itnim_meminfo(struct bfa_iocfc_cfg_s * cfg,u32 * km_len)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
bfa_itnim_attach(struct bfa_fcpim_s * fcpim)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
bfa_itnim_iocdisable(struct bfa_itnim_s * itnim)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
bfa_itnim_send_fwcreate(struct bfa_itnim_s * itnim)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
bfa_itnim_send_fwdelete(struct bfa_itnim_s * itnim)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
bfa_itnim_delayed_comp(struct bfa_itnim_s * itnim,bfa_boolean_t iotov)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
bfa_itnim_iotov_online(struct bfa_itnim_s * itnim)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
bfa_itnim_iotov_cleanup(struct bfa_itnim_s * itnim)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
bfa_itnim_iotov(void * itnim_arg)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
bfa_itnim_iotov_start(struct bfa_itnim_s * itnim)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
bfa_itnim_iotov_stop(struct bfa_itnim_s * itnim)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
bfa_itnim_iotov_delete(struct bfa_itnim_s * itnim)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
bfa_itnim_update_del_itn_stats(struct bfa_itnim_s * itnim)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
bfa_itnim_isr(struct bfa_s * bfa,struct bfi_msg_s * m)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 *
bfa_itnim_create(struct bfa_s * bfa,struct bfa_rport_s * rport,void * ditn)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
bfa_itnim_delete(struct bfa_itnim_s * itnim)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
bfa_itnim_online(struct bfa_itnim_s * itnim,bfa_boolean_t seq_rec)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
bfa_itnim_offline(struct bfa_itnim_s * itnim)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
bfa_itnim_hold_io(struct bfa_itnim_s * itnim)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
bfa_itnim_get_ioprofile(struct bfa_itnim_s * itnim,struct bfa_itnim_ioprofile_s * ioprofile)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 /* unsigned 32-bit time_t overflow here in y2106 */
1482 itnim->ioprofile.io_profile_start_time =
1483 bfa_io_profile_start_time(itnim->bfa);
1484 itnim->ioprofile.clock_res_mul = bfa_io_lat_clock_res_mul;
1485 itnim->ioprofile.clock_res_div = bfa_io_lat_clock_res_div;
1486 *ioprofile = itnim->ioprofile;
1487
1488 return BFA_STATUS_OK;
1489 }
1490
1491 void
bfa_itnim_clear_stats(struct bfa_itnim_s * itnim)1492 bfa_itnim_clear_stats(struct bfa_itnim_s *itnim)
1493 {
1494 int j;
1495
1496 if (!itnim)
1497 return;
1498
1499 memset(&itnim->stats, 0, sizeof(itnim->stats));
1500 memset(&itnim->ioprofile, 0, sizeof(itnim->ioprofile));
1501 for (j = 0; j < BFA_IOBUCKET_MAX; j++)
1502 itnim->ioprofile.io_latency.min[j] = ~0;
1503 }
1504
1505 /*
1506 * BFA IO module state machine functions
1507 */
1508
1509 /*
1510 * IO is not started (unallocated).
1511 */
1512 static void
bfa_ioim_sm_uninit(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1513 bfa_ioim_sm_uninit(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1514 {
1515 switch (event) {
1516 case BFA_IOIM_SM_START:
1517 if (!bfa_itnim_is_online(ioim->itnim)) {
1518 if (!bfa_itnim_hold_io(ioim->itnim)) {
1519 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1520 list_del(&ioim->qe);
1521 list_add_tail(&ioim->qe,
1522 &ioim->fcpim->ioim_comp_q);
1523 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1524 __bfa_cb_ioim_pathtov, ioim);
1525 } else {
1526 list_del(&ioim->qe);
1527 list_add_tail(&ioim->qe,
1528 &ioim->itnim->pending_q);
1529 }
1530 break;
1531 }
1532
1533 if (ioim->nsges > BFI_SGE_INLINE) {
1534 if (!bfa_ioim_sgpg_alloc(ioim)) {
1535 bfa_sm_set_state(ioim, bfa_ioim_sm_sgalloc);
1536 return;
1537 }
1538 }
1539
1540 if (!bfa_ioim_send_ioreq(ioim)) {
1541 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
1542 break;
1543 }
1544
1545 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1546 break;
1547
1548 case BFA_IOIM_SM_IOTOV:
1549 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1550 bfa_ioim_move_to_comp_q(ioim);
1551 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1552 __bfa_cb_ioim_pathtov, ioim);
1553 break;
1554
1555 case BFA_IOIM_SM_ABORT:
1556 /*
1557 * IO in pending queue can get abort requests. Complete abort
1558 * requests immediately.
1559 */
1560 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1561 WARN_ON(!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim));
1562 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1563 __bfa_cb_ioim_abort, ioim);
1564 break;
1565
1566 default:
1567 bfa_sm_fault(ioim->bfa, event);
1568 }
1569 }
1570
1571 /*
1572 * IO is waiting for SG pages.
1573 */
1574 static void
bfa_ioim_sm_sgalloc(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1575 bfa_ioim_sm_sgalloc(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1576 {
1577 bfa_trc(ioim->bfa, ioim->iotag);
1578 bfa_trc(ioim->bfa, event);
1579
1580 switch (event) {
1581 case BFA_IOIM_SM_SGALLOCED:
1582 if (!bfa_ioim_send_ioreq(ioim)) {
1583 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
1584 break;
1585 }
1586 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1587 break;
1588
1589 case BFA_IOIM_SM_CLEANUP:
1590 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1591 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
1592 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1593 ioim);
1594 bfa_ioim_notify_cleanup(ioim);
1595 break;
1596
1597 case BFA_IOIM_SM_ABORT:
1598 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1599 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
1600 bfa_ioim_move_to_comp_q(ioim);
1601 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1602 ioim);
1603 break;
1604
1605 case BFA_IOIM_SM_HWFAIL:
1606 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1607 bfa_sgpg_wcancel(ioim->bfa, &ioim->iosp->sgpg_wqe);
1608 bfa_ioim_move_to_comp_q(ioim);
1609 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1610 ioim);
1611 break;
1612
1613 default:
1614 bfa_sm_fault(ioim->bfa, event);
1615 }
1616 }
1617
1618 /*
1619 * IO is active.
1620 */
1621 static void
bfa_ioim_sm_active(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1622 bfa_ioim_sm_active(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1623 {
1624 switch (event) {
1625 case BFA_IOIM_SM_COMP_GOOD:
1626 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1627 bfa_ioim_move_to_comp_q(ioim);
1628 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1629 __bfa_cb_ioim_good_comp, ioim);
1630 break;
1631
1632 case BFA_IOIM_SM_COMP:
1633 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1634 bfa_ioim_move_to_comp_q(ioim);
1635 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp,
1636 ioim);
1637 break;
1638
1639 case BFA_IOIM_SM_DONE:
1640 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1641 bfa_ioim_move_to_comp_q(ioim);
1642 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_comp,
1643 ioim);
1644 break;
1645
1646 case BFA_IOIM_SM_ABORT:
1647 ioim->iosp->abort_explicit = BFA_TRUE;
1648 ioim->io_cbfn = __bfa_cb_ioim_abort;
1649
1650 if (bfa_ioim_send_abort(ioim))
1651 bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
1652 else {
1653 bfa_sm_set_state(ioim, bfa_ioim_sm_abort_qfull);
1654 bfa_stats(ioim->itnim, qwait);
1655 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1656 &ioim->iosp->reqq_wait);
1657 }
1658 break;
1659
1660 case BFA_IOIM_SM_CLEANUP:
1661 ioim->iosp->abort_explicit = BFA_FALSE;
1662 ioim->io_cbfn = __bfa_cb_ioim_failed;
1663
1664 if (bfa_ioim_send_abort(ioim))
1665 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1666 else {
1667 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1668 bfa_stats(ioim->itnim, qwait);
1669 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1670 &ioim->iosp->reqq_wait);
1671 }
1672 break;
1673
1674 case BFA_IOIM_SM_HWFAIL:
1675 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1676 bfa_ioim_move_to_comp_q(ioim);
1677 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1678 ioim);
1679 break;
1680
1681 case BFA_IOIM_SM_SQRETRY:
1682 if (bfa_ioim_maxretry_reached(ioim)) {
1683 /* max retry reached, free IO */
1684 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1685 bfa_ioim_move_to_comp_q(ioim);
1686 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1687 __bfa_cb_ioim_failed, ioim);
1688 break;
1689 }
1690 /* waiting for IO tag resource free */
1691 bfa_sm_set_state(ioim, bfa_ioim_sm_cmnd_retry);
1692 break;
1693
1694 default:
1695 bfa_sm_fault(ioim->bfa, event);
1696 }
1697 }
1698
1699 /*
1700 * IO is retried with new tag.
1701 */
1702 static void
bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1703 bfa_ioim_sm_cmnd_retry(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1704 {
1705 switch (event) {
1706 case BFA_IOIM_SM_FREE:
1707 /* abts and rrq done. Now retry the IO with new tag */
1708 bfa_ioim_update_iotag(ioim);
1709 if (!bfa_ioim_send_ioreq(ioim)) {
1710 bfa_sm_set_state(ioim, bfa_ioim_sm_qfull);
1711 break;
1712 }
1713 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1714 break;
1715
1716 case BFA_IOIM_SM_CLEANUP:
1717 ioim->iosp->abort_explicit = BFA_FALSE;
1718 ioim->io_cbfn = __bfa_cb_ioim_failed;
1719
1720 if (bfa_ioim_send_abort(ioim))
1721 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1722 else {
1723 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1724 bfa_stats(ioim->itnim, qwait);
1725 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1726 &ioim->iosp->reqq_wait);
1727 }
1728 break;
1729
1730 case BFA_IOIM_SM_HWFAIL:
1731 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1732 bfa_ioim_move_to_comp_q(ioim);
1733 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe,
1734 __bfa_cb_ioim_failed, ioim);
1735 break;
1736
1737 case BFA_IOIM_SM_ABORT:
1738 /* in this state IO abort is done.
1739 * Waiting for IO tag resource free.
1740 */
1741 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1742 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1743 ioim);
1744 break;
1745
1746 default:
1747 bfa_sm_fault(ioim->bfa, event);
1748 }
1749 }
1750
1751 /*
1752 * IO is being aborted, waiting for completion from firmware.
1753 */
1754 static void
bfa_ioim_sm_abort(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1755 bfa_ioim_sm_abort(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1756 {
1757 bfa_trc(ioim->bfa, ioim->iotag);
1758 bfa_trc(ioim->bfa, event);
1759
1760 switch (event) {
1761 case BFA_IOIM_SM_COMP_GOOD:
1762 case BFA_IOIM_SM_COMP:
1763 case BFA_IOIM_SM_DONE:
1764 case BFA_IOIM_SM_FREE:
1765 break;
1766
1767 case BFA_IOIM_SM_ABORT_DONE:
1768 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1769 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1770 ioim);
1771 break;
1772
1773 case BFA_IOIM_SM_ABORT_COMP:
1774 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1775 bfa_ioim_move_to_comp_q(ioim);
1776 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1777 ioim);
1778 break;
1779
1780 case BFA_IOIM_SM_COMP_UTAG:
1781 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1782 bfa_ioim_move_to_comp_q(ioim);
1783 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1784 ioim);
1785 break;
1786
1787 case BFA_IOIM_SM_CLEANUP:
1788 WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE);
1789 ioim->iosp->abort_explicit = BFA_FALSE;
1790
1791 if (bfa_ioim_send_abort(ioim))
1792 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1793 else {
1794 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1795 bfa_stats(ioim->itnim, qwait);
1796 bfa_reqq_wait(ioim->bfa, ioim->reqq,
1797 &ioim->iosp->reqq_wait);
1798 }
1799 break;
1800
1801 case BFA_IOIM_SM_HWFAIL:
1802 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1803 bfa_ioim_move_to_comp_q(ioim);
1804 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1805 ioim);
1806 break;
1807
1808 default:
1809 bfa_sm_fault(ioim->bfa, event);
1810 }
1811 }
1812
1813 /*
1814 * IO is being cleaned up (implicit abort), waiting for completion from
1815 * firmware.
1816 */
1817 static void
bfa_ioim_sm_cleanup(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1818 bfa_ioim_sm_cleanup(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1819 {
1820 bfa_trc(ioim->bfa, ioim->iotag);
1821 bfa_trc(ioim->bfa, event);
1822
1823 switch (event) {
1824 case BFA_IOIM_SM_COMP_GOOD:
1825 case BFA_IOIM_SM_COMP:
1826 case BFA_IOIM_SM_DONE:
1827 case BFA_IOIM_SM_FREE:
1828 break;
1829
1830 case BFA_IOIM_SM_ABORT:
1831 /*
1832 * IO is already being aborted implicitly
1833 */
1834 ioim->io_cbfn = __bfa_cb_ioim_abort;
1835 break;
1836
1837 case BFA_IOIM_SM_ABORT_DONE:
1838 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1839 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1840 bfa_ioim_notify_cleanup(ioim);
1841 break;
1842
1843 case BFA_IOIM_SM_ABORT_COMP:
1844 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1845 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1846 bfa_ioim_notify_cleanup(ioim);
1847 break;
1848
1849 case BFA_IOIM_SM_COMP_UTAG:
1850 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1851 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1852 bfa_ioim_notify_cleanup(ioim);
1853 break;
1854
1855 case BFA_IOIM_SM_HWFAIL:
1856 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1857 bfa_ioim_move_to_comp_q(ioim);
1858 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1859 ioim);
1860 break;
1861
1862 case BFA_IOIM_SM_CLEANUP:
1863 /*
1864 * IO can be in cleanup state already due to TM command.
1865 * 2nd cleanup request comes from ITN offline event.
1866 */
1867 break;
1868
1869 default:
1870 bfa_sm_fault(ioim->bfa, event);
1871 }
1872 }
1873
1874 /*
1875 * IO is waiting for room in request CQ
1876 */
1877 static void
bfa_ioim_sm_qfull(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1878 bfa_ioim_sm_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1879 {
1880 bfa_trc(ioim->bfa, ioim->iotag);
1881 bfa_trc(ioim->bfa, event);
1882
1883 switch (event) {
1884 case BFA_IOIM_SM_QRESUME:
1885 bfa_sm_set_state(ioim, bfa_ioim_sm_active);
1886 bfa_ioim_send_ioreq(ioim);
1887 break;
1888
1889 case BFA_IOIM_SM_ABORT:
1890 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1891 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1892 bfa_ioim_move_to_comp_q(ioim);
1893 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1894 ioim);
1895 break;
1896
1897 case BFA_IOIM_SM_CLEANUP:
1898 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1899 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1900 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1901 ioim);
1902 bfa_ioim_notify_cleanup(ioim);
1903 break;
1904
1905 case BFA_IOIM_SM_HWFAIL:
1906 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1907 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1908 bfa_ioim_move_to_comp_q(ioim);
1909 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1910 ioim);
1911 break;
1912
1913 default:
1914 bfa_sm_fault(ioim->bfa, event);
1915 }
1916 }
1917
1918 /*
1919 * Active IO is being aborted, waiting for room in request CQ.
1920 */
1921 static void
bfa_ioim_sm_abort_qfull(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1922 bfa_ioim_sm_abort_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1923 {
1924 bfa_trc(ioim->bfa, ioim->iotag);
1925 bfa_trc(ioim->bfa, event);
1926
1927 switch (event) {
1928 case BFA_IOIM_SM_QRESUME:
1929 bfa_sm_set_state(ioim, bfa_ioim_sm_abort);
1930 bfa_ioim_send_abort(ioim);
1931 break;
1932
1933 case BFA_IOIM_SM_CLEANUP:
1934 WARN_ON(ioim->iosp->abort_explicit != BFA_TRUE);
1935 ioim->iosp->abort_explicit = BFA_FALSE;
1936 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup_qfull);
1937 break;
1938
1939 case BFA_IOIM_SM_COMP_GOOD:
1940 case BFA_IOIM_SM_COMP:
1941 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1942 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1943 bfa_ioim_move_to_comp_q(ioim);
1944 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1945 ioim);
1946 break;
1947
1948 case BFA_IOIM_SM_DONE:
1949 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
1950 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1951 bfa_ioim_move_to_comp_q(ioim);
1952 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_abort,
1953 ioim);
1954 break;
1955
1956 case BFA_IOIM_SM_HWFAIL:
1957 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1958 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1959 bfa_ioim_move_to_comp_q(ioim);
1960 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
1961 ioim);
1962 break;
1963
1964 default:
1965 bfa_sm_fault(ioim->bfa, event);
1966 }
1967 }
1968
1969 /*
1970 * Active IO is being cleaned up, waiting for room in request CQ.
1971 */
1972 static void
bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)1973 bfa_ioim_sm_cleanup_qfull(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
1974 {
1975 bfa_trc(ioim->bfa, ioim->iotag);
1976 bfa_trc(ioim->bfa, event);
1977
1978 switch (event) {
1979 case BFA_IOIM_SM_QRESUME:
1980 bfa_sm_set_state(ioim, bfa_ioim_sm_cleanup);
1981 bfa_ioim_send_abort(ioim);
1982 break;
1983
1984 case BFA_IOIM_SM_ABORT:
1985 /*
1986 * IO is already being cleaned up implicitly
1987 */
1988 ioim->io_cbfn = __bfa_cb_ioim_abort;
1989 break;
1990
1991 case BFA_IOIM_SM_COMP_GOOD:
1992 case BFA_IOIM_SM_COMP:
1993 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
1994 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
1995 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
1996 bfa_ioim_notify_cleanup(ioim);
1997 break;
1998
1999 case BFA_IOIM_SM_DONE:
2000 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb_free);
2001 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
2002 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
2003 bfa_ioim_notify_cleanup(ioim);
2004 break;
2005
2006 case BFA_IOIM_SM_HWFAIL:
2007 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
2008 bfa_reqq_wcancel(&ioim->iosp->reqq_wait);
2009 bfa_ioim_move_to_comp_q(ioim);
2010 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, __bfa_cb_ioim_failed,
2011 ioim);
2012 break;
2013
2014 default:
2015 bfa_sm_fault(ioim->bfa, event);
2016 }
2017 }
2018
2019 /*
2020 * IO bfa callback is pending.
2021 */
2022 static void
bfa_ioim_sm_hcb(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)2023 bfa_ioim_sm_hcb(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
2024 {
2025 switch (event) {
2026 case BFA_IOIM_SM_HCB:
2027 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
2028 bfa_ioim_free(ioim);
2029 break;
2030
2031 case BFA_IOIM_SM_CLEANUP:
2032 bfa_ioim_notify_cleanup(ioim);
2033 break;
2034
2035 case BFA_IOIM_SM_HWFAIL:
2036 break;
2037
2038 default:
2039 bfa_sm_fault(ioim->bfa, event);
2040 }
2041 }
2042
2043 /*
2044 * IO bfa callback is pending. IO resource cannot be freed.
2045 */
2046 static void
bfa_ioim_sm_hcb_free(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)2047 bfa_ioim_sm_hcb_free(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
2048 {
2049 bfa_trc(ioim->bfa, ioim->iotag);
2050 bfa_trc(ioim->bfa, event);
2051
2052 switch (event) {
2053 case BFA_IOIM_SM_HCB:
2054 bfa_sm_set_state(ioim, bfa_ioim_sm_resfree);
2055 list_del(&ioim->qe);
2056 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_resfree_q);
2057 break;
2058
2059 case BFA_IOIM_SM_FREE:
2060 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
2061 break;
2062
2063 case BFA_IOIM_SM_CLEANUP:
2064 bfa_ioim_notify_cleanup(ioim);
2065 break;
2066
2067 case BFA_IOIM_SM_HWFAIL:
2068 bfa_sm_set_state(ioim, bfa_ioim_sm_hcb);
2069 break;
2070
2071 default:
2072 bfa_sm_fault(ioim->bfa, event);
2073 }
2074 }
2075
2076 /*
2077 * IO is completed, waiting resource free from firmware.
2078 */
2079 static void
bfa_ioim_sm_resfree(struct bfa_ioim_s * ioim,enum bfa_ioim_event event)2080 bfa_ioim_sm_resfree(struct bfa_ioim_s *ioim, enum bfa_ioim_event event)
2081 {
2082 bfa_trc(ioim->bfa, ioim->iotag);
2083 bfa_trc(ioim->bfa, event);
2084
2085 switch (event) {
2086 case BFA_IOIM_SM_FREE:
2087 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
2088 bfa_ioim_free(ioim);
2089 break;
2090
2091 case BFA_IOIM_SM_CLEANUP:
2092 bfa_ioim_notify_cleanup(ioim);
2093 break;
2094
2095 case BFA_IOIM_SM_HWFAIL:
2096 break;
2097
2098 default:
2099 bfa_sm_fault(ioim->bfa, event);
2100 }
2101 }
2102
2103 /*
2104 * This is called from bfa_fcpim_start after the bfa_init() with flash read
2105 * is complete by driver. now invalidate the stale content of lun mask
2106 * like unit attention, rp tag and lp tag.
2107 */
2108 void
bfa_ioim_lm_init(struct bfa_s * bfa)2109 bfa_ioim_lm_init(struct bfa_s *bfa)
2110 {
2111 struct bfa_lun_mask_s *lunm_list;
2112 int i;
2113
2114 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2115 return;
2116
2117 lunm_list = bfa_get_lun_mask_list(bfa);
2118 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2119 lunm_list[i].ua = BFA_IOIM_LM_UA_RESET;
2120 lunm_list[i].lp_tag = BFA_LP_TAG_INVALID;
2121 lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID;
2122 }
2123 }
2124
2125 static void
__bfa_cb_ioim_good_comp(void * cbarg,bfa_boolean_t complete)2126 __bfa_cb_ioim_good_comp(void *cbarg, bfa_boolean_t complete)
2127 {
2128 struct bfa_ioim_s *ioim = cbarg;
2129
2130 if (!complete) {
2131 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2132 return;
2133 }
2134
2135 bfa_cb_ioim_good_comp(ioim->bfa->bfad, ioim->dio);
2136 }
2137
2138 static void
__bfa_cb_ioim_comp(void * cbarg,bfa_boolean_t complete)2139 __bfa_cb_ioim_comp(void *cbarg, bfa_boolean_t complete)
2140 {
2141 struct bfa_ioim_s *ioim = cbarg;
2142 struct bfi_ioim_rsp_s *m;
2143 u8 *snsinfo = NULL;
2144 u8 sns_len = 0;
2145 s32 residue = 0;
2146
2147 if (!complete) {
2148 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2149 return;
2150 }
2151
2152 m = (struct bfi_ioim_rsp_s *) &ioim->iosp->comp_rspmsg;
2153 if (m->io_status == BFI_IOIM_STS_OK) {
2154 /*
2155 * setup sense information, if present
2156 */
2157 if ((m->scsi_status == SCSI_STATUS_CHECK_CONDITION) &&
2158 m->sns_len) {
2159 sns_len = m->sns_len;
2160 snsinfo = BFA_SNSINFO_FROM_TAG(ioim->fcpim->fcp,
2161 ioim->iotag);
2162 }
2163
2164 /*
2165 * setup residue value correctly for normal completions
2166 */
2167 if (m->resid_flags == FCP_RESID_UNDER) {
2168 residue = be32_to_cpu(m->residue);
2169 bfa_stats(ioim->itnim, iocomp_underrun);
2170 }
2171 if (m->resid_flags == FCP_RESID_OVER) {
2172 residue = be32_to_cpu(m->residue);
2173 residue = -residue;
2174 bfa_stats(ioim->itnim, iocomp_overrun);
2175 }
2176 }
2177
2178 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, m->io_status,
2179 m->scsi_status, sns_len, snsinfo, residue);
2180 }
2181
2182 void
bfa_fcpim_lunmask_rp_update(struct bfa_s * bfa,wwn_t lp_wwn,wwn_t rp_wwn,u16 rp_tag,u8 lp_tag)2183 bfa_fcpim_lunmask_rp_update(struct bfa_s *bfa, wwn_t lp_wwn, wwn_t rp_wwn,
2184 u16 rp_tag, u8 lp_tag)
2185 {
2186 struct bfa_lun_mask_s *lun_list;
2187 u8 i;
2188
2189 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2190 return;
2191
2192 lun_list = bfa_get_lun_mask_list(bfa);
2193 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2194 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) {
2195 if ((lun_list[i].lp_wwn == lp_wwn) &&
2196 (lun_list[i].rp_wwn == rp_wwn)) {
2197 lun_list[i].rp_tag = rp_tag;
2198 lun_list[i].lp_tag = lp_tag;
2199 }
2200 }
2201 }
2202 }
2203
2204 /*
2205 * set UA for all active luns in LM DB
2206 */
2207 static void
bfa_ioim_lm_set_ua(struct bfa_s * bfa)2208 bfa_ioim_lm_set_ua(struct bfa_s *bfa)
2209 {
2210 struct bfa_lun_mask_s *lunm_list;
2211 int i;
2212
2213 lunm_list = bfa_get_lun_mask_list(bfa);
2214 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2215 if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
2216 continue;
2217 lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
2218 }
2219 }
2220
2221 bfa_status_t
bfa_fcpim_lunmask_update(struct bfa_s * bfa,u32 update)2222 bfa_fcpim_lunmask_update(struct bfa_s *bfa, u32 update)
2223 {
2224 struct bfa_lunmask_cfg_s *lun_mask;
2225
2226 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2227 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2228 return BFA_STATUS_FAILED;
2229
2230 if (bfa_get_lun_mask_status(bfa) == update)
2231 return BFA_STATUS_NO_CHANGE;
2232
2233 lun_mask = bfa_get_lun_mask(bfa);
2234 lun_mask->status = update;
2235
2236 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED)
2237 bfa_ioim_lm_set_ua(bfa);
2238
2239 return bfa_dconf_update(bfa);
2240 }
2241
2242 bfa_status_t
bfa_fcpim_lunmask_clear(struct bfa_s * bfa)2243 bfa_fcpim_lunmask_clear(struct bfa_s *bfa)
2244 {
2245 int i;
2246 struct bfa_lun_mask_s *lunm_list;
2247
2248 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2249 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2250 return BFA_STATUS_FAILED;
2251
2252 lunm_list = bfa_get_lun_mask_list(bfa);
2253 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2254 if (lunm_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE) {
2255 if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID)
2256 bfa_rport_unset_lunmask(bfa,
2257 BFA_RPORT_FROM_TAG(bfa, lunm_list[i].rp_tag));
2258 }
2259 }
2260
2261 memset(lunm_list, 0, sizeof(struct bfa_lun_mask_s) * MAX_LUN_MASK_CFG);
2262 return bfa_dconf_update(bfa);
2263 }
2264
2265 bfa_status_t
bfa_fcpim_lunmask_query(struct bfa_s * bfa,void * buf)2266 bfa_fcpim_lunmask_query(struct bfa_s *bfa, void *buf)
2267 {
2268 struct bfa_lunmask_cfg_s *lun_mask;
2269
2270 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2271 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2272 return BFA_STATUS_FAILED;
2273
2274 lun_mask = bfa_get_lun_mask(bfa);
2275 memcpy(buf, lun_mask, sizeof(struct bfa_lunmask_cfg_s));
2276 return BFA_STATUS_OK;
2277 }
2278
2279 bfa_status_t
bfa_fcpim_lunmask_add(struct bfa_s * bfa,u16 vf_id,wwn_t * pwwn,wwn_t rpwwn,struct scsi_lun lun)2280 bfa_fcpim_lunmask_add(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
2281 wwn_t rpwwn, struct scsi_lun lun)
2282 {
2283 struct bfa_lun_mask_s *lunm_list;
2284 struct bfa_rport_s *rp = NULL;
2285 int i, free_index = MAX_LUN_MASK_CFG + 1;
2286 struct bfa_fcs_lport_s *port = NULL;
2287 struct bfa_fcs_rport_s *rp_fcs;
2288
2289 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2290 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2291 return BFA_STATUS_FAILED;
2292
2293 port = bfa_fcs_lookup_port(&((struct bfad_s *)bfa->bfad)->bfa_fcs,
2294 vf_id, *pwwn);
2295 if (port) {
2296 *pwwn = port->port_cfg.pwwn;
2297 rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
2298 if (rp_fcs)
2299 rp = rp_fcs->bfa_rport;
2300 }
2301
2302 lunm_list = bfa_get_lun_mask_list(bfa);
2303 /* if entry exists */
2304 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2305 if (lunm_list[i].state != BFA_IOIM_LUN_MASK_ACTIVE)
2306 free_index = i;
2307 if ((lunm_list[i].lp_wwn == *pwwn) &&
2308 (lunm_list[i].rp_wwn == rpwwn) &&
2309 (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) ==
2310 scsilun_to_int((struct scsi_lun *)&lun)))
2311 return BFA_STATUS_ENTRY_EXISTS;
2312 }
2313
2314 if (free_index > MAX_LUN_MASK_CFG)
2315 return BFA_STATUS_MAX_ENTRY_REACHED;
2316
2317 if (rp) {
2318 lunm_list[free_index].lp_tag = bfa_lps_get_tag_from_pid(bfa,
2319 rp->rport_info.local_pid);
2320 lunm_list[free_index].rp_tag = rp->rport_tag;
2321 } else {
2322 lunm_list[free_index].lp_tag = BFA_LP_TAG_INVALID;
2323 lunm_list[free_index].rp_tag = BFA_RPORT_TAG_INVALID;
2324 }
2325
2326 lunm_list[free_index].lp_wwn = *pwwn;
2327 lunm_list[free_index].rp_wwn = rpwwn;
2328 lunm_list[free_index].lun = lun;
2329 lunm_list[free_index].state = BFA_IOIM_LUN_MASK_ACTIVE;
2330
2331 /* set for all luns in this rp */
2332 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2333 if ((lunm_list[i].lp_wwn == *pwwn) &&
2334 (lunm_list[i].rp_wwn == rpwwn))
2335 lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
2336 }
2337
2338 return bfa_dconf_update(bfa);
2339 }
2340
2341 bfa_status_t
bfa_fcpim_lunmask_delete(struct bfa_s * bfa,u16 vf_id,wwn_t * pwwn,wwn_t rpwwn,struct scsi_lun lun)2342 bfa_fcpim_lunmask_delete(struct bfa_s *bfa, u16 vf_id, wwn_t *pwwn,
2343 wwn_t rpwwn, struct scsi_lun lun)
2344 {
2345 struct bfa_lun_mask_s *lunm_list;
2346 struct bfa_rport_s *rp = NULL;
2347 struct bfa_fcs_lport_s *port = NULL;
2348 struct bfa_fcs_rport_s *rp_fcs;
2349 int i;
2350
2351 /* in min cfg lunm_list could be NULL but no commands should run. */
2352 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_MINCFG)
2353 return BFA_STATUS_FAILED;
2354
2355 bfa_trc(bfa, bfa_get_lun_mask_status(bfa));
2356 bfa_trc(bfa, *pwwn);
2357 bfa_trc(bfa, rpwwn);
2358 bfa_trc(bfa, scsilun_to_int((struct scsi_lun *)&lun));
2359
2360 if (*pwwn == 0) {
2361 port = bfa_fcs_lookup_port(
2362 &((struct bfad_s *)bfa->bfad)->bfa_fcs,
2363 vf_id, *pwwn);
2364 if (port) {
2365 *pwwn = port->port_cfg.pwwn;
2366 rp_fcs = bfa_fcs_lport_get_rport_by_pwwn(port, rpwwn);
2367 if (rp_fcs)
2368 rp = rp_fcs->bfa_rport;
2369 }
2370 }
2371
2372 lunm_list = bfa_get_lun_mask_list(bfa);
2373 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2374 if ((lunm_list[i].lp_wwn == *pwwn) &&
2375 (lunm_list[i].rp_wwn == rpwwn) &&
2376 (scsilun_to_int((struct scsi_lun *)&lunm_list[i].lun) ==
2377 scsilun_to_int((struct scsi_lun *)&lun))) {
2378 lunm_list[i].lp_wwn = 0;
2379 lunm_list[i].rp_wwn = 0;
2380 int_to_scsilun(0, &lunm_list[i].lun);
2381 lunm_list[i].state = BFA_IOIM_LUN_MASK_INACTIVE;
2382 if (lunm_list[i].rp_tag != BFA_RPORT_TAG_INVALID) {
2383 lunm_list[i].rp_tag = BFA_RPORT_TAG_INVALID;
2384 lunm_list[i].lp_tag = BFA_LP_TAG_INVALID;
2385 }
2386 return bfa_dconf_update(bfa);
2387 }
2388 }
2389
2390 /* set for all luns in this rp */
2391 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
2392 if ((lunm_list[i].lp_wwn == *pwwn) &&
2393 (lunm_list[i].rp_wwn == rpwwn))
2394 lunm_list[i].ua = BFA_IOIM_LM_UA_SET;
2395 }
2396
2397 return BFA_STATUS_ENTRY_NOT_EXISTS;
2398 }
2399
2400 static void
__bfa_cb_ioim_failed(void * cbarg,bfa_boolean_t complete)2401 __bfa_cb_ioim_failed(void *cbarg, bfa_boolean_t complete)
2402 {
2403 struct bfa_ioim_s *ioim = cbarg;
2404
2405 if (!complete) {
2406 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2407 return;
2408 }
2409
2410 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_ABORTED,
2411 0, 0, NULL, 0);
2412 }
2413
2414 static void
__bfa_cb_ioim_pathtov(void * cbarg,bfa_boolean_t complete)2415 __bfa_cb_ioim_pathtov(void *cbarg, bfa_boolean_t complete)
2416 {
2417 struct bfa_ioim_s *ioim = cbarg;
2418
2419 bfa_stats(ioim->itnim, path_tov_expired);
2420 if (!complete) {
2421 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2422 return;
2423 }
2424
2425 bfa_cb_ioim_done(ioim->bfa->bfad, ioim->dio, BFI_IOIM_STS_PATHTOV,
2426 0, 0, NULL, 0);
2427 }
2428
2429 static void
__bfa_cb_ioim_abort(void * cbarg,bfa_boolean_t complete)2430 __bfa_cb_ioim_abort(void *cbarg, bfa_boolean_t complete)
2431 {
2432 struct bfa_ioim_s *ioim = cbarg;
2433
2434 if (!complete) {
2435 bfa_sm_send_event(ioim, BFA_IOIM_SM_HCB);
2436 return;
2437 }
2438
2439 bfa_cb_ioim_abort(ioim->bfa->bfad, ioim->dio);
2440 }
2441
2442 static void
bfa_ioim_sgpg_alloced(void * cbarg)2443 bfa_ioim_sgpg_alloced(void *cbarg)
2444 {
2445 struct bfa_ioim_s *ioim = cbarg;
2446
2447 ioim->nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
2448 list_splice_tail_init(&ioim->iosp->sgpg_wqe.sgpg_q, &ioim->sgpg_q);
2449 ioim->sgpg = bfa_q_first(&ioim->sgpg_q);
2450 bfa_sm_send_event(ioim, BFA_IOIM_SM_SGALLOCED);
2451 }
2452
2453 /*
2454 * Send I/O request to firmware.
2455 */
2456 static bfa_boolean_t
bfa_ioim_send_ioreq(struct bfa_ioim_s * ioim)2457 bfa_ioim_send_ioreq(struct bfa_ioim_s *ioim)
2458 {
2459 struct bfa_itnim_s *itnim = ioim->itnim;
2460 struct bfi_ioim_req_s *m;
2461 static struct fcp_cmnd_s cmnd_z0 = { { { 0 } } };
2462 struct bfi_sge_s *sge, *sgpge;
2463 u32 pgdlen = 0;
2464 u32 fcp_dl;
2465 u64 addr;
2466 struct scatterlist *sg;
2467 struct bfa_sgpg_s *sgpg;
2468 struct scsi_cmnd *cmnd = (struct scsi_cmnd *) ioim->dio;
2469 u32 i, sge_id, pgcumsz;
2470 enum dma_data_direction dmadir;
2471
2472 /*
2473 * check for room in queue to send request now
2474 */
2475 m = bfa_reqq_next(ioim->bfa, ioim->reqq);
2476 if (!m) {
2477 bfa_stats(ioim->itnim, qwait);
2478 bfa_reqq_wait(ioim->bfa, ioim->reqq,
2479 &ioim->iosp->reqq_wait);
2480 return BFA_FALSE;
2481 }
2482
2483 /*
2484 * build i/o request message next
2485 */
2486 m->io_tag = cpu_to_be16(ioim->iotag);
2487 m->rport_hdl = ioim->itnim->rport->fw_handle;
2488 m->io_timeout = 0;
2489
2490 sge = &m->sges[0];
2491 sgpg = ioim->sgpg;
2492 sge_id = 0;
2493 sgpge = NULL;
2494 pgcumsz = 0;
2495 scsi_for_each_sg(cmnd, sg, ioim->nsges, i) {
2496 if (i == 0) {
2497 /* build inline IO SG element */
2498 addr = bfa_sgaddr_le(sg_dma_address(sg));
2499 sge->sga = *(union bfi_addr_u *) &addr;
2500 pgdlen = sg_dma_len(sg);
2501 sge->sg_len = pgdlen;
2502 sge->flags = (ioim->nsges > BFI_SGE_INLINE) ?
2503 BFI_SGE_DATA_CPL : BFI_SGE_DATA_LAST;
2504 bfa_sge_to_be(sge);
2505 sge++;
2506 } else {
2507 if (sge_id == 0)
2508 sgpge = sgpg->sgpg->sges;
2509
2510 addr = bfa_sgaddr_le(sg_dma_address(sg));
2511 sgpge->sga = *(union bfi_addr_u *) &addr;
2512 sgpge->sg_len = sg_dma_len(sg);
2513 pgcumsz += sgpge->sg_len;
2514
2515 /* set flags */
2516 if (i < (ioim->nsges - 1) &&
2517 sge_id < (BFI_SGPG_DATA_SGES - 1))
2518 sgpge->flags = BFI_SGE_DATA;
2519 else if (i < (ioim->nsges - 1))
2520 sgpge->flags = BFI_SGE_DATA_CPL;
2521 else
2522 sgpge->flags = BFI_SGE_DATA_LAST;
2523
2524 bfa_sge_to_le(sgpge);
2525
2526 sgpge++;
2527 if (i == (ioim->nsges - 1)) {
2528 sgpge->flags = BFI_SGE_PGDLEN;
2529 sgpge->sga.a32.addr_lo = 0;
2530 sgpge->sga.a32.addr_hi = 0;
2531 sgpge->sg_len = pgcumsz;
2532 bfa_sge_to_le(sgpge);
2533 } else if (++sge_id == BFI_SGPG_DATA_SGES) {
2534 sgpg = (struct bfa_sgpg_s *) bfa_q_next(sgpg);
2535 sgpge->flags = BFI_SGE_LINK;
2536 sgpge->sga = sgpg->sgpg_pa;
2537 sgpge->sg_len = pgcumsz;
2538 bfa_sge_to_le(sgpge);
2539 sge_id = 0;
2540 pgcumsz = 0;
2541 }
2542 }
2543 }
2544
2545 if (ioim->nsges > BFI_SGE_INLINE) {
2546 sge->sga = ioim->sgpg->sgpg_pa;
2547 } else {
2548 sge->sga.a32.addr_lo = 0;
2549 sge->sga.a32.addr_hi = 0;
2550 }
2551 sge->sg_len = pgdlen;
2552 sge->flags = BFI_SGE_PGDLEN;
2553 bfa_sge_to_be(sge);
2554
2555 /*
2556 * set up I/O command parameters
2557 */
2558 m->cmnd = cmnd_z0;
2559 int_to_scsilun(cmnd->device->lun, &m->cmnd.lun);
2560 dmadir = cmnd->sc_data_direction;
2561 if (dmadir == DMA_TO_DEVICE)
2562 m->cmnd.iodir = FCP_IODIR_WRITE;
2563 else if (dmadir == DMA_FROM_DEVICE)
2564 m->cmnd.iodir = FCP_IODIR_READ;
2565 else
2566 m->cmnd.iodir = FCP_IODIR_NONE;
2567
2568 m->cmnd.cdb = *(struct scsi_cdb_s *) cmnd->cmnd;
2569 fcp_dl = scsi_bufflen(cmnd);
2570 m->cmnd.fcp_dl = cpu_to_be32(fcp_dl);
2571
2572 /*
2573 * set up I/O message header
2574 */
2575 switch (m->cmnd.iodir) {
2576 case FCP_IODIR_READ:
2577 bfi_h2i_set(m->mh, BFI_MC_IOIM_READ, 0, bfa_fn_lpu(ioim->bfa));
2578 bfa_stats(itnim, input_reqs);
2579 ioim->itnim->stats.rd_throughput += fcp_dl;
2580 break;
2581 case FCP_IODIR_WRITE:
2582 bfi_h2i_set(m->mh, BFI_MC_IOIM_WRITE, 0, bfa_fn_lpu(ioim->bfa));
2583 bfa_stats(itnim, output_reqs);
2584 ioim->itnim->stats.wr_throughput += fcp_dl;
2585 break;
2586 case FCP_IODIR_RW:
2587 bfa_stats(itnim, input_reqs);
2588 bfa_stats(itnim, output_reqs);
2589 default:
2590 bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa));
2591 }
2592 if (itnim->seq_rec ||
2593 (scsi_bufflen(cmnd) & (sizeof(u32) - 1)))
2594 bfi_h2i_set(m->mh, BFI_MC_IOIM_IO, 0, bfa_fn_lpu(ioim->bfa));
2595
2596 /*
2597 * queue I/O message to firmware
2598 */
2599 bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh);
2600 return BFA_TRUE;
2601 }
2602
2603 /*
2604 * Setup any additional SG pages needed.Inline SG element is setup
2605 * at queuing time.
2606 */
2607 static bfa_boolean_t
bfa_ioim_sgpg_alloc(struct bfa_ioim_s * ioim)2608 bfa_ioim_sgpg_alloc(struct bfa_ioim_s *ioim)
2609 {
2610 u16 nsgpgs;
2611
2612 WARN_ON(ioim->nsges <= BFI_SGE_INLINE);
2613
2614 /*
2615 * allocate SG pages needed
2616 */
2617 nsgpgs = BFA_SGPG_NPAGE(ioim->nsges);
2618 if (!nsgpgs)
2619 return BFA_TRUE;
2620
2621 if (bfa_sgpg_malloc(ioim->bfa, &ioim->sgpg_q, nsgpgs)
2622 != BFA_STATUS_OK) {
2623 bfa_sgpg_wait(ioim->bfa, &ioim->iosp->sgpg_wqe, nsgpgs);
2624 return BFA_FALSE;
2625 }
2626
2627 ioim->nsgpgs = nsgpgs;
2628 ioim->sgpg = bfa_q_first(&ioim->sgpg_q);
2629
2630 return BFA_TRUE;
2631 }
2632
2633 /*
2634 * Send I/O abort request to firmware.
2635 */
2636 static bfa_boolean_t
bfa_ioim_send_abort(struct bfa_ioim_s * ioim)2637 bfa_ioim_send_abort(struct bfa_ioim_s *ioim)
2638 {
2639 struct bfi_ioim_abort_req_s *m;
2640 enum bfi_ioim_h2i msgop;
2641
2642 /*
2643 * check for room in queue to send request now
2644 */
2645 m = bfa_reqq_next(ioim->bfa, ioim->reqq);
2646 if (!m)
2647 return BFA_FALSE;
2648
2649 /*
2650 * build i/o request message next
2651 */
2652 if (ioim->iosp->abort_explicit)
2653 msgop = BFI_IOIM_H2I_IOABORT_REQ;
2654 else
2655 msgop = BFI_IOIM_H2I_IOCLEANUP_REQ;
2656
2657 bfi_h2i_set(m->mh, BFI_MC_IOIM, msgop, bfa_fn_lpu(ioim->bfa));
2658 m->io_tag = cpu_to_be16(ioim->iotag);
2659 m->abort_tag = ++ioim->abort_tag;
2660
2661 /*
2662 * queue I/O message to firmware
2663 */
2664 bfa_reqq_produce(ioim->bfa, ioim->reqq, m->mh);
2665 return BFA_TRUE;
2666 }
2667
2668 /*
2669 * Call to resume any I/O requests waiting for room in request queue.
2670 */
2671 static void
bfa_ioim_qresume(void * cbarg)2672 bfa_ioim_qresume(void *cbarg)
2673 {
2674 struct bfa_ioim_s *ioim = cbarg;
2675
2676 bfa_stats(ioim->itnim, qresumes);
2677 bfa_sm_send_event(ioim, BFA_IOIM_SM_QRESUME);
2678 }
2679
2680
2681 static void
bfa_ioim_notify_cleanup(struct bfa_ioim_s * ioim)2682 bfa_ioim_notify_cleanup(struct bfa_ioim_s *ioim)
2683 {
2684 /*
2685 * Move IO from itnim queue to fcpim global queue since itnim will be
2686 * freed.
2687 */
2688 list_del(&ioim->qe);
2689 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
2690
2691 if (!ioim->iosp->tskim) {
2692 if (ioim->fcpim->delay_comp && ioim->itnim->iotov_active) {
2693 bfa_cb_dequeue(&ioim->hcb_qe);
2694 list_del(&ioim->qe);
2695 list_add_tail(&ioim->qe, &ioim->itnim->delay_comp_q);
2696 }
2697 bfa_itnim_iodone(ioim->itnim);
2698 } else
2699 bfa_wc_down(&ioim->iosp->tskim->wc);
2700 }
2701
2702 static bfa_boolean_t
bfa_ioim_is_abortable(struct bfa_ioim_s * ioim)2703 bfa_ioim_is_abortable(struct bfa_ioim_s *ioim)
2704 {
2705 if ((bfa_sm_cmp_state(ioim, bfa_ioim_sm_uninit) &&
2706 (!bfa_q_is_on_q(&ioim->itnim->pending_q, ioim))) ||
2707 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort)) ||
2708 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_abort_qfull)) ||
2709 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb)) ||
2710 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_hcb_free)) ||
2711 (bfa_sm_cmp_state(ioim, bfa_ioim_sm_resfree)))
2712 return BFA_FALSE;
2713
2714 return BFA_TRUE;
2715 }
2716
2717 void
bfa_ioim_delayed_comp(struct bfa_ioim_s * ioim,bfa_boolean_t iotov)2718 bfa_ioim_delayed_comp(struct bfa_ioim_s *ioim, bfa_boolean_t iotov)
2719 {
2720 /*
2721 * If path tov timer expired, failback with PATHTOV status - these
2722 * IO requests are not normally retried by IO stack.
2723 *
2724 * Otherwise device cameback online and fail it with normal failed
2725 * status so that IO stack retries these failed IO requests.
2726 */
2727 if (iotov)
2728 ioim->io_cbfn = __bfa_cb_ioim_pathtov;
2729 else {
2730 ioim->io_cbfn = __bfa_cb_ioim_failed;
2731 bfa_stats(ioim->itnim, iocom_nexus_abort);
2732 }
2733 bfa_cb_queue(ioim->bfa, &ioim->hcb_qe, ioim->io_cbfn, ioim);
2734
2735 /*
2736 * Move IO to fcpim global queue since itnim will be
2737 * freed.
2738 */
2739 list_del(&ioim->qe);
2740 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
2741 }
2742
2743
2744 /*
2745 * Memory allocation and initialization.
2746 */
2747 void
bfa_ioim_attach(struct bfa_fcpim_s * fcpim)2748 bfa_ioim_attach(struct bfa_fcpim_s *fcpim)
2749 {
2750 struct bfa_ioim_s *ioim;
2751 struct bfa_fcp_mod_s *fcp = fcpim->fcp;
2752 struct bfa_ioim_sp_s *iosp;
2753 u16 i;
2754
2755 /*
2756 * claim memory first
2757 */
2758 ioim = (struct bfa_ioim_s *) bfa_mem_kva_curp(fcp);
2759 fcpim->ioim_arr = ioim;
2760 bfa_mem_kva_curp(fcp) = (u8 *) (ioim + fcpim->fcp->num_ioim_reqs);
2761
2762 iosp = (struct bfa_ioim_sp_s *) bfa_mem_kva_curp(fcp);
2763 fcpim->ioim_sp_arr = iosp;
2764 bfa_mem_kva_curp(fcp) = (u8 *) (iosp + fcpim->fcp->num_ioim_reqs);
2765
2766 /*
2767 * Initialize ioim free queues
2768 */
2769 INIT_LIST_HEAD(&fcpim->ioim_resfree_q);
2770 INIT_LIST_HEAD(&fcpim->ioim_comp_q);
2771
2772 for (i = 0; i < fcpim->fcp->num_ioim_reqs;
2773 i++, ioim++, iosp++) {
2774 /*
2775 * initialize IOIM
2776 */
2777 memset(ioim, 0, sizeof(struct bfa_ioim_s));
2778 ioim->iotag = i;
2779 ioim->bfa = fcpim->bfa;
2780 ioim->fcpim = fcpim;
2781 ioim->iosp = iosp;
2782 INIT_LIST_HEAD(&ioim->sgpg_q);
2783 bfa_reqq_winit(&ioim->iosp->reqq_wait,
2784 bfa_ioim_qresume, ioim);
2785 bfa_sgpg_winit(&ioim->iosp->sgpg_wqe,
2786 bfa_ioim_sgpg_alloced, ioim);
2787 bfa_sm_set_state(ioim, bfa_ioim_sm_uninit);
2788 }
2789 }
2790
2791 void
bfa_ioim_isr(struct bfa_s * bfa,struct bfi_msg_s * m)2792 bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
2793 {
2794 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
2795 struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
2796 struct bfa_ioim_s *ioim;
2797 u16 iotag;
2798 enum bfa_ioim_event evt = BFA_IOIM_SM_COMP;
2799
2800 iotag = be16_to_cpu(rsp->io_tag);
2801
2802 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
2803 WARN_ON(ioim->iotag != iotag);
2804
2805 bfa_trc(ioim->bfa, ioim->iotag);
2806 bfa_trc(ioim->bfa, rsp->io_status);
2807 bfa_trc(ioim->bfa, rsp->reuse_io_tag);
2808
2809 if (bfa_sm_cmp_state(ioim, bfa_ioim_sm_active))
2810 ioim->iosp->comp_rspmsg = *m;
2811
2812 switch (rsp->io_status) {
2813 case BFI_IOIM_STS_OK:
2814 bfa_stats(ioim->itnim, iocomp_ok);
2815 if (rsp->reuse_io_tag == 0)
2816 evt = BFA_IOIM_SM_DONE;
2817 else
2818 evt = BFA_IOIM_SM_COMP;
2819 break;
2820
2821 case BFI_IOIM_STS_TIMEDOUT:
2822 bfa_stats(ioim->itnim, iocomp_timedout);
2823 case BFI_IOIM_STS_ABORTED:
2824 rsp->io_status = BFI_IOIM_STS_ABORTED;
2825 bfa_stats(ioim->itnim, iocomp_aborted);
2826 if (rsp->reuse_io_tag == 0)
2827 evt = BFA_IOIM_SM_DONE;
2828 else
2829 evt = BFA_IOIM_SM_COMP;
2830 break;
2831
2832 case BFI_IOIM_STS_PROTO_ERR:
2833 bfa_stats(ioim->itnim, iocom_proto_err);
2834 WARN_ON(!rsp->reuse_io_tag);
2835 evt = BFA_IOIM_SM_COMP;
2836 break;
2837
2838 case BFI_IOIM_STS_SQER_NEEDED:
2839 bfa_stats(ioim->itnim, iocom_sqer_needed);
2840 WARN_ON(rsp->reuse_io_tag != 0);
2841 evt = BFA_IOIM_SM_SQRETRY;
2842 break;
2843
2844 case BFI_IOIM_STS_RES_FREE:
2845 bfa_stats(ioim->itnim, iocom_res_free);
2846 evt = BFA_IOIM_SM_FREE;
2847 break;
2848
2849 case BFI_IOIM_STS_HOST_ABORTED:
2850 bfa_stats(ioim->itnim, iocom_hostabrts);
2851 if (rsp->abort_tag != ioim->abort_tag) {
2852 bfa_trc(ioim->bfa, rsp->abort_tag);
2853 bfa_trc(ioim->bfa, ioim->abort_tag);
2854 return;
2855 }
2856
2857 if (rsp->reuse_io_tag)
2858 evt = BFA_IOIM_SM_ABORT_COMP;
2859 else
2860 evt = BFA_IOIM_SM_ABORT_DONE;
2861 break;
2862
2863 case BFI_IOIM_STS_UTAG:
2864 bfa_stats(ioim->itnim, iocom_utags);
2865 evt = BFA_IOIM_SM_COMP_UTAG;
2866 break;
2867
2868 default:
2869 WARN_ON(1);
2870 }
2871
2872 bfa_sm_send_event(ioim, evt);
2873 }
2874
2875 void
bfa_ioim_good_comp_isr(struct bfa_s * bfa,struct bfi_msg_s * m)2876 bfa_ioim_good_comp_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
2877 {
2878 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
2879 struct bfi_ioim_rsp_s *rsp = (struct bfi_ioim_rsp_s *) m;
2880 struct bfa_ioim_s *ioim;
2881 u16 iotag;
2882
2883 iotag = be16_to_cpu(rsp->io_tag);
2884
2885 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag);
2886 WARN_ON(ioim->iotag != iotag);
2887
2888 bfa_ioim_cb_profile_comp(fcpim, ioim);
2889
2890 bfa_sm_send_event(ioim, BFA_IOIM_SM_COMP_GOOD);
2891 }
2892
2893 /*
2894 * Called by itnim to clean up IO while going offline.
2895 */
2896 void
bfa_ioim_cleanup(struct bfa_ioim_s * ioim)2897 bfa_ioim_cleanup(struct bfa_ioim_s *ioim)
2898 {
2899 bfa_trc(ioim->bfa, ioim->iotag);
2900 bfa_stats(ioim->itnim, io_cleanups);
2901
2902 ioim->iosp->tskim = NULL;
2903 bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP);
2904 }
2905
2906 void
bfa_ioim_cleanup_tm(struct bfa_ioim_s * ioim,struct bfa_tskim_s * tskim)2907 bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim, struct bfa_tskim_s *tskim)
2908 {
2909 bfa_trc(ioim->bfa, ioim->iotag);
2910 bfa_stats(ioim->itnim, io_tmaborts);
2911
2912 ioim->iosp->tskim = tskim;
2913 bfa_sm_send_event(ioim, BFA_IOIM_SM_CLEANUP);
2914 }
2915
2916 /*
2917 * IOC failure handling.
2918 */
2919 void
bfa_ioim_iocdisable(struct bfa_ioim_s * ioim)2920 bfa_ioim_iocdisable(struct bfa_ioim_s *ioim)
2921 {
2922 bfa_trc(ioim->bfa, ioim->iotag);
2923 bfa_stats(ioim->itnim, io_iocdowns);
2924 bfa_sm_send_event(ioim, BFA_IOIM_SM_HWFAIL);
2925 }
2926
2927 /*
2928 * IO offline TOV popped. Fail the pending IO.
2929 */
2930 void
bfa_ioim_tov(struct bfa_ioim_s * ioim)2931 bfa_ioim_tov(struct bfa_ioim_s *ioim)
2932 {
2933 bfa_trc(ioim->bfa, ioim->iotag);
2934 bfa_sm_send_event(ioim, BFA_IOIM_SM_IOTOV);
2935 }
2936
2937
2938 /*
2939 * Allocate IOIM resource for initiator mode I/O request.
2940 */
2941 struct bfa_ioim_s *
bfa_ioim_alloc(struct bfa_s * bfa,struct bfad_ioim_s * dio,struct bfa_itnim_s * itnim,u16 nsges)2942 bfa_ioim_alloc(struct bfa_s *bfa, struct bfad_ioim_s *dio,
2943 struct bfa_itnim_s *itnim, u16 nsges)
2944 {
2945 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
2946 struct bfa_ioim_s *ioim;
2947 struct bfa_iotag_s *iotag = NULL;
2948
2949 /*
2950 * alocate IOIM resource
2951 */
2952 bfa_q_deq(&fcpim->fcp->iotag_ioim_free_q, &iotag);
2953 if (!iotag) {
2954 bfa_stats(itnim, no_iotags);
2955 return NULL;
2956 }
2957
2958 ioim = BFA_IOIM_FROM_TAG(fcpim, iotag->tag);
2959
2960 ioim->dio = dio;
2961 ioim->itnim = itnim;
2962 ioim->nsges = nsges;
2963 ioim->nsgpgs = 0;
2964
2965 bfa_stats(itnim, total_ios);
2966 fcpim->ios_active++;
2967
2968 list_add_tail(&ioim->qe, &itnim->io_q);
2969
2970 return ioim;
2971 }
2972
2973 void
bfa_ioim_free(struct bfa_ioim_s * ioim)2974 bfa_ioim_free(struct bfa_ioim_s *ioim)
2975 {
2976 struct bfa_fcpim_s *fcpim = ioim->fcpim;
2977 struct bfa_iotag_s *iotag;
2978
2979 if (ioim->nsgpgs > 0)
2980 bfa_sgpg_mfree(ioim->bfa, &ioim->sgpg_q, ioim->nsgpgs);
2981
2982 bfa_stats(ioim->itnim, io_comps);
2983 fcpim->ios_active--;
2984
2985 ioim->iotag &= BFA_IOIM_IOTAG_MASK;
2986
2987 WARN_ON(!(ioim->iotag <
2988 (fcpim->fcp->num_ioim_reqs + fcpim->fcp->num_fwtio_reqs)));
2989 iotag = BFA_IOTAG_FROM_TAG(fcpim->fcp, ioim->iotag);
2990
2991 if (ioim->iotag < fcpim->fcp->num_ioim_reqs)
2992 list_add_tail(&iotag->qe, &fcpim->fcp->iotag_ioim_free_q);
2993 else
2994 list_add_tail(&iotag->qe, &fcpim->fcp->iotag_tio_free_q);
2995
2996 list_del(&ioim->qe);
2997 }
2998
2999 void
bfa_ioim_start(struct bfa_ioim_s * ioim)3000 bfa_ioim_start(struct bfa_ioim_s *ioim)
3001 {
3002 bfa_ioim_cb_profile_start(ioim->fcpim, ioim);
3003
3004 /*
3005 * Obtain the queue over which this request has to be issued
3006 */
3007 ioim->reqq = bfa_fcpim_ioredirect_enabled(ioim->bfa) ?
3008 BFA_FALSE : bfa_itnim_get_reqq(ioim);
3009
3010 bfa_sm_send_event(ioim, BFA_IOIM_SM_START);
3011 }
3012
3013 /*
3014 * Driver I/O abort request.
3015 */
3016 bfa_status_t
bfa_ioim_abort(struct bfa_ioim_s * ioim)3017 bfa_ioim_abort(struct bfa_ioim_s *ioim)
3018 {
3019
3020 bfa_trc(ioim->bfa, ioim->iotag);
3021
3022 if (!bfa_ioim_is_abortable(ioim))
3023 return BFA_STATUS_FAILED;
3024
3025 bfa_stats(ioim->itnim, io_aborts);
3026 bfa_sm_send_event(ioim, BFA_IOIM_SM_ABORT);
3027
3028 return BFA_STATUS_OK;
3029 }
3030
3031 /*
3032 * BFA TSKIM state machine functions
3033 */
3034
3035 /*
3036 * Task management command beginning state.
3037 */
3038 static void
bfa_tskim_sm_uninit(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3039 bfa_tskim_sm_uninit(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3040 {
3041 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3042
3043 switch (event) {
3044 case BFA_TSKIM_SM_START:
3045 bfa_sm_set_state(tskim, bfa_tskim_sm_active);
3046 bfa_tskim_gather_ios(tskim);
3047
3048 /*
3049 * If device is offline, do not send TM on wire. Just cleanup
3050 * any pending IO requests and complete TM request.
3051 */
3052 if (!bfa_itnim_is_online(tskim->itnim)) {
3053 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3054 tskim->tsk_status = BFI_TSKIM_STS_OK;
3055 bfa_tskim_cleanup_ios(tskim);
3056 return;
3057 }
3058
3059 if (!bfa_tskim_send(tskim)) {
3060 bfa_sm_set_state(tskim, bfa_tskim_sm_qfull);
3061 bfa_stats(tskim->itnim, tm_qwait);
3062 bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
3063 &tskim->reqq_wait);
3064 }
3065 break;
3066
3067 default:
3068 bfa_sm_fault(tskim->bfa, event);
3069 }
3070 }
3071
3072 /*
3073 * TM command is active, awaiting completion from firmware to
3074 * cleanup IO requests in TM scope.
3075 */
3076 static void
bfa_tskim_sm_active(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3077 bfa_tskim_sm_active(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3078 {
3079 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3080
3081 switch (event) {
3082 case BFA_TSKIM_SM_DONE:
3083 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3084 bfa_tskim_cleanup_ios(tskim);
3085 break;
3086
3087 case BFA_TSKIM_SM_CLEANUP:
3088 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
3089 if (!bfa_tskim_send_abort(tskim)) {
3090 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup_qfull);
3091 bfa_stats(tskim->itnim, tm_qwait);
3092 bfa_reqq_wait(tskim->bfa, tskim->itnim->reqq,
3093 &tskim->reqq_wait);
3094 }
3095 break;
3096
3097 case BFA_TSKIM_SM_HWFAIL:
3098 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3099 bfa_tskim_iocdisable_ios(tskim);
3100 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3101 break;
3102
3103 default:
3104 bfa_sm_fault(tskim->bfa, event);
3105 }
3106 }
3107
3108 /*
3109 * An active TM is being cleaned up since ITN is offline. Awaiting cleanup
3110 * completion event from firmware.
3111 */
3112 static void
bfa_tskim_sm_cleanup(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3113 bfa_tskim_sm_cleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3114 {
3115 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3116
3117 switch (event) {
3118 case BFA_TSKIM_SM_DONE:
3119 /*
3120 * Ignore and wait for ABORT completion from firmware.
3121 */
3122 break;
3123
3124 case BFA_TSKIM_SM_UTAG:
3125 case BFA_TSKIM_SM_CLEANUP_DONE:
3126 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3127 bfa_tskim_cleanup_ios(tskim);
3128 break;
3129
3130 case BFA_TSKIM_SM_HWFAIL:
3131 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3132 bfa_tskim_iocdisable_ios(tskim);
3133 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3134 break;
3135
3136 default:
3137 bfa_sm_fault(tskim->bfa, event);
3138 }
3139 }
3140
3141 static void
bfa_tskim_sm_iocleanup(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3142 bfa_tskim_sm_iocleanup(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3143 {
3144 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3145
3146 switch (event) {
3147 case BFA_TSKIM_SM_IOS_DONE:
3148 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3149 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_done);
3150 break;
3151
3152 case BFA_TSKIM_SM_CLEANUP:
3153 /*
3154 * Ignore, TM command completed on wire.
3155 * Notify TM conmpletion on IO cleanup completion.
3156 */
3157 break;
3158
3159 case BFA_TSKIM_SM_HWFAIL:
3160 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3161 bfa_tskim_iocdisable_ios(tskim);
3162 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3163 break;
3164
3165 default:
3166 bfa_sm_fault(tskim->bfa, event);
3167 }
3168 }
3169
3170 /*
3171 * Task management command is waiting for room in request CQ
3172 */
3173 static void
bfa_tskim_sm_qfull(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3174 bfa_tskim_sm_qfull(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3175 {
3176 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3177
3178 switch (event) {
3179 case BFA_TSKIM_SM_QRESUME:
3180 bfa_sm_set_state(tskim, bfa_tskim_sm_active);
3181 bfa_tskim_send(tskim);
3182 break;
3183
3184 case BFA_TSKIM_SM_CLEANUP:
3185 /*
3186 * No need to send TM on wire since ITN is offline.
3187 */
3188 bfa_sm_set_state(tskim, bfa_tskim_sm_iocleanup);
3189 bfa_reqq_wcancel(&tskim->reqq_wait);
3190 bfa_tskim_cleanup_ios(tskim);
3191 break;
3192
3193 case BFA_TSKIM_SM_HWFAIL:
3194 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3195 bfa_reqq_wcancel(&tskim->reqq_wait);
3196 bfa_tskim_iocdisable_ios(tskim);
3197 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3198 break;
3199
3200 default:
3201 bfa_sm_fault(tskim->bfa, event);
3202 }
3203 }
3204
3205 /*
3206 * Task management command is active, awaiting for room in request CQ
3207 * to send clean up request.
3208 */
3209 static void
bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3210 bfa_tskim_sm_cleanup_qfull(struct bfa_tskim_s *tskim,
3211 enum bfa_tskim_event event)
3212 {
3213 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3214
3215 switch (event) {
3216 case BFA_TSKIM_SM_DONE:
3217 bfa_reqq_wcancel(&tskim->reqq_wait);
3218 /*
3219 * Fall through !!!
3220 */
3221 case BFA_TSKIM_SM_QRESUME:
3222 bfa_sm_set_state(tskim, bfa_tskim_sm_cleanup);
3223 bfa_tskim_send_abort(tskim);
3224 break;
3225
3226 case BFA_TSKIM_SM_HWFAIL:
3227 bfa_sm_set_state(tskim, bfa_tskim_sm_hcb);
3228 bfa_reqq_wcancel(&tskim->reqq_wait);
3229 bfa_tskim_iocdisable_ios(tskim);
3230 bfa_tskim_qcomp(tskim, __bfa_cb_tskim_failed);
3231 break;
3232
3233 default:
3234 bfa_sm_fault(tskim->bfa, event);
3235 }
3236 }
3237
3238 /*
3239 * BFA callback is pending
3240 */
3241 static void
bfa_tskim_sm_hcb(struct bfa_tskim_s * tskim,enum bfa_tskim_event event)3242 bfa_tskim_sm_hcb(struct bfa_tskim_s *tskim, enum bfa_tskim_event event)
3243 {
3244 bfa_trc(tskim->bfa, tskim->tsk_tag << 16 | event);
3245
3246 switch (event) {
3247 case BFA_TSKIM_SM_HCB:
3248 bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
3249 bfa_tskim_free(tskim);
3250 break;
3251
3252 case BFA_TSKIM_SM_CLEANUP:
3253 bfa_tskim_notify_comp(tskim);
3254 break;
3255
3256 case BFA_TSKIM_SM_HWFAIL:
3257 break;
3258
3259 default:
3260 bfa_sm_fault(tskim->bfa, event);
3261 }
3262 }
3263
3264 static void
__bfa_cb_tskim_done(void * cbarg,bfa_boolean_t complete)3265 __bfa_cb_tskim_done(void *cbarg, bfa_boolean_t complete)
3266 {
3267 struct bfa_tskim_s *tskim = cbarg;
3268
3269 if (!complete) {
3270 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
3271 return;
3272 }
3273
3274 bfa_stats(tskim->itnim, tm_success);
3275 bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk, tskim->tsk_status);
3276 }
3277
3278 static void
__bfa_cb_tskim_failed(void * cbarg,bfa_boolean_t complete)3279 __bfa_cb_tskim_failed(void *cbarg, bfa_boolean_t complete)
3280 {
3281 struct bfa_tskim_s *tskim = cbarg;
3282
3283 if (!complete) {
3284 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HCB);
3285 return;
3286 }
3287
3288 bfa_stats(tskim->itnim, tm_failures);
3289 bfa_cb_tskim_done(tskim->bfa->bfad, tskim->dtsk,
3290 BFI_TSKIM_STS_FAILED);
3291 }
3292
3293 static bfa_boolean_t
bfa_tskim_match_scope(struct bfa_tskim_s * tskim,struct scsi_lun lun)3294 bfa_tskim_match_scope(struct bfa_tskim_s *tskim, struct scsi_lun lun)
3295 {
3296 switch (tskim->tm_cmnd) {
3297 case FCP_TM_TARGET_RESET:
3298 return BFA_TRUE;
3299
3300 case FCP_TM_ABORT_TASK_SET:
3301 case FCP_TM_CLEAR_TASK_SET:
3302 case FCP_TM_LUN_RESET:
3303 case FCP_TM_CLEAR_ACA:
3304 return !memcmp(&tskim->lun, &lun, sizeof(lun));
3305
3306 default:
3307 WARN_ON(1);
3308 }
3309
3310 return BFA_FALSE;
3311 }
3312
3313 /*
3314 * Gather affected IO requests and task management commands.
3315 */
3316 static void
bfa_tskim_gather_ios(struct bfa_tskim_s * tskim)3317 bfa_tskim_gather_ios(struct bfa_tskim_s *tskim)
3318 {
3319 struct bfa_itnim_s *itnim = tskim->itnim;
3320 struct bfa_ioim_s *ioim;
3321 struct list_head *qe, *qen;
3322 struct scsi_cmnd *cmnd;
3323 struct scsi_lun scsilun;
3324
3325 INIT_LIST_HEAD(&tskim->io_q);
3326
3327 /*
3328 * Gather any active IO requests first.
3329 */
3330 list_for_each_safe(qe, qen, &itnim->io_q) {
3331 ioim = (struct bfa_ioim_s *) qe;
3332 cmnd = (struct scsi_cmnd *) ioim->dio;
3333 int_to_scsilun(cmnd->device->lun, &scsilun);
3334 if (bfa_tskim_match_scope(tskim, scsilun)) {
3335 list_del(&ioim->qe);
3336 list_add_tail(&ioim->qe, &tskim->io_q);
3337 }
3338 }
3339
3340 /*
3341 * Failback any pending IO requests immediately.
3342 */
3343 list_for_each_safe(qe, qen, &itnim->pending_q) {
3344 ioim = (struct bfa_ioim_s *) qe;
3345 cmnd = (struct scsi_cmnd *) ioim->dio;
3346 int_to_scsilun(cmnd->device->lun, &scsilun);
3347 if (bfa_tskim_match_scope(tskim, scsilun)) {
3348 list_del(&ioim->qe);
3349 list_add_tail(&ioim->qe, &ioim->fcpim->ioim_comp_q);
3350 bfa_ioim_tov(ioim);
3351 }
3352 }
3353 }
3354
3355 /*
3356 * IO cleanup completion
3357 */
3358 static void
bfa_tskim_cleanp_comp(void * tskim_cbarg)3359 bfa_tskim_cleanp_comp(void *tskim_cbarg)
3360 {
3361 struct bfa_tskim_s *tskim = tskim_cbarg;
3362
3363 bfa_stats(tskim->itnim, tm_io_comps);
3364 bfa_sm_send_event(tskim, BFA_TSKIM_SM_IOS_DONE);
3365 }
3366
3367 /*
3368 * Gather affected IO requests and task management commands.
3369 */
3370 static void
bfa_tskim_cleanup_ios(struct bfa_tskim_s * tskim)3371 bfa_tskim_cleanup_ios(struct bfa_tskim_s *tskim)
3372 {
3373 struct bfa_ioim_s *ioim;
3374 struct list_head *qe, *qen;
3375
3376 bfa_wc_init(&tskim->wc, bfa_tskim_cleanp_comp, tskim);
3377
3378 list_for_each_safe(qe, qen, &tskim->io_q) {
3379 ioim = (struct bfa_ioim_s *) qe;
3380 bfa_wc_up(&tskim->wc);
3381 bfa_ioim_cleanup_tm(ioim, tskim);
3382 }
3383
3384 bfa_wc_wait(&tskim->wc);
3385 }
3386
3387 /*
3388 * Send task management request to firmware.
3389 */
3390 static bfa_boolean_t
bfa_tskim_send(struct bfa_tskim_s * tskim)3391 bfa_tskim_send(struct bfa_tskim_s *tskim)
3392 {
3393 struct bfa_itnim_s *itnim = tskim->itnim;
3394 struct bfi_tskim_req_s *m;
3395
3396 /*
3397 * check for room in queue to send request now
3398 */
3399 m = bfa_reqq_next(tskim->bfa, itnim->reqq);
3400 if (!m)
3401 return BFA_FALSE;
3402
3403 /*
3404 * build i/o request message next
3405 */
3406 bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_TM_REQ,
3407 bfa_fn_lpu(tskim->bfa));
3408
3409 m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
3410 m->itn_fhdl = tskim->itnim->rport->fw_handle;
3411 m->t_secs = tskim->tsecs;
3412 m->lun = tskim->lun;
3413 m->tm_flags = tskim->tm_cmnd;
3414
3415 /*
3416 * queue I/O message to firmware
3417 */
3418 bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh);
3419 return BFA_TRUE;
3420 }
3421
3422 /*
3423 * Send abort request to cleanup an active TM to firmware.
3424 */
3425 static bfa_boolean_t
bfa_tskim_send_abort(struct bfa_tskim_s * tskim)3426 bfa_tskim_send_abort(struct bfa_tskim_s *tskim)
3427 {
3428 struct bfa_itnim_s *itnim = tskim->itnim;
3429 struct bfi_tskim_abortreq_s *m;
3430
3431 /*
3432 * check for room in queue to send request now
3433 */
3434 m = bfa_reqq_next(tskim->bfa, itnim->reqq);
3435 if (!m)
3436 return BFA_FALSE;
3437
3438 /*
3439 * build i/o request message next
3440 */
3441 bfi_h2i_set(m->mh, BFI_MC_TSKIM, BFI_TSKIM_H2I_ABORT_REQ,
3442 bfa_fn_lpu(tskim->bfa));
3443
3444 m->tsk_tag = cpu_to_be16(tskim->tsk_tag);
3445
3446 /*
3447 * queue I/O message to firmware
3448 */
3449 bfa_reqq_produce(tskim->bfa, itnim->reqq, m->mh);
3450 return BFA_TRUE;
3451 }
3452
3453 /*
3454 * Call to resume task management cmnd waiting for room in request queue.
3455 */
3456 static void
bfa_tskim_qresume(void * cbarg)3457 bfa_tskim_qresume(void *cbarg)
3458 {
3459 struct bfa_tskim_s *tskim = cbarg;
3460
3461 bfa_stats(tskim->itnim, tm_qresumes);
3462 bfa_sm_send_event(tskim, BFA_TSKIM_SM_QRESUME);
3463 }
3464
3465 /*
3466 * Cleanup IOs associated with a task mangement command on IOC failures.
3467 */
3468 static void
bfa_tskim_iocdisable_ios(struct bfa_tskim_s * tskim)3469 bfa_tskim_iocdisable_ios(struct bfa_tskim_s *tskim)
3470 {
3471 struct bfa_ioim_s *ioim;
3472 struct list_head *qe, *qen;
3473
3474 list_for_each_safe(qe, qen, &tskim->io_q) {
3475 ioim = (struct bfa_ioim_s *) qe;
3476 bfa_ioim_iocdisable(ioim);
3477 }
3478 }
3479
3480 /*
3481 * Notification on completions from related ioim.
3482 */
3483 void
bfa_tskim_iodone(struct bfa_tskim_s * tskim)3484 bfa_tskim_iodone(struct bfa_tskim_s *tskim)
3485 {
3486 bfa_wc_down(&tskim->wc);
3487 }
3488
3489 /*
3490 * Handle IOC h/w failure notification from itnim.
3491 */
3492 void
bfa_tskim_iocdisable(struct bfa_tskim_s * tskim)3493 bfa_tskim_iocdisable(struct bfa_tskim_s *tskim)
3494 {
3495 tskim->notify = BFA_FALSE;
3496 bfa_stats(tskim->itnim, tm_iocdowns);
3497 bfa_sm_send_event(tskim, BFA_TSKIM_SM_HWFAIL);
3498 }
3499
3500 /*
3501 * Cleanup TM command and associated IOs as part of ITNIM offline.
3502 */
3503 void
bfa_tskim_cleanup(struct bfa_tskim_s * tskim)3504 bfa_tskim_cleanup(struct bfa_tskim_s *tskim)
3505 {
3506 tskim->notify = BFA_TRUE;
3507 bfa_stats(tskim->itnim, tm_cleanups);
3508 bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP);
3509 }
3510
3511 /*
3512 * Memory allocation and initialization.
3513 */
3514 void
bfa_tskim_attach(struct bfa_fcpim_s * fcpim)3515 bfa_tskim_attach(struct bfa_fcpim_s *fcpim)
3516 {
3517 struct bfa_tskim_s *tskim;
3518 struct bfa_fcp_mod_s *fcp = fcpim->fcp;
3519 u16 i;
3520
3521 INIT_LIST_HEAD(&fcpim->tskim_free_q);
3522 INIT_LIST_HEAD(&fcpim->tskim_unused_q);
3523
3524 tskim = (struct bfa_tskim_s *) bfa_mem_kva_curp(fcp);
3525 fcpim->tskim_arr = tskim;
3526
3527 for (i = 0; i < fcpim->num_tskim_reqs; i++, tskim++) {
3528 /*
3529 * initialize TSKIM
3530 */
3531 memset(tskim, 0, sizeof(struct bfa_tskim_s));
3532 tskim->tsk_tag = i;
3533 tskim->bfa = fcpim->bfa;
3534 tskim->fcpim = fcpim;
3535 tskim->notify = BFA_FALSE;
3536 bfa_reqq_winit(&tskim->reqq_wait, bfa_tskim_qresume,
3537 tskim);
3538 bfa_sm_set_state(tskim, bfa_tskim_sm_uninit);
3539
3540 list_add_tail(&tskim->qe, &fcpim->tskim_free_q);
3541 }
3542
3543 bfa_mem_kva_curp(fcp) = (u8 *) tskim;
3544 }
3545
3546 void
bfa_tskim_isr(struct bfa_s * bfa,struct bfi_msg_s * m)3547 bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
3548 {
3549 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3550 struct bfi_tskim_rsp_s *rsp = (struct bfi_tskim_rsp_s *) m;
3551 struct bfa_tskim_s *tskim;
3552 u16 tsk_tag = be16_to_cpu(rsp->tsk_tag);
3553
3554 tskim = BFA_TSKIM_FROM_TAG(fcpim, tsk_tag);
3555 WARN_ON(tskim->tsk_tag != tsk_tag);
3556
3557 tskim->tsk_status = rsp->tsk_status;
3558
3559 /*
3560 * Firmware sends BFI_TSKIM_STS_ABORTED status for abort
3561 * requests. All other statuses are for normal completions.
3562 */
3563 if (rsp->tsk_status == BFI_TSKIM_STS_ABORTED) {
3564 bfa_stats(tskim->itnim, tm_cleanup_comps);
3565 bfa_sm_send_event(tskim, BFA_TSKIM_SM_CLEANUP_DONE);
3566 } else if (rsp->tsk_status == BFI_TSKIM_STS_UTAG) {
3567 bfa_sm_send_event(tskim, BFA_TSKIM_SM_UTAG);
3568 } else {
3569 bfa_stats(tskim->itnim, tm_fw_rsps);
3570 bfa_sm_send_event(tskim, BFA_TSKIM_SM_DONE);
3571 }
3572 }
3573
3574
3575 struct bfa_tskim_s *
bfa_tskim_alloc(struct bfa_s * bfa,struct bfad_tskim_s * dtsk)3576 bfa_tskim_alloc(struct bfa_s *bfa, struct bfad_tskim_s *dtsk)
3577 {
3578 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3579 struct bfa_tskim_s *tskim;
3580
3581 bfa_q_deq(&fcpim->tskim_free_q, &tskim);
3582
3583 if (tskim)
3584 tskim->dtsk = dtsk;
3585
3586 return tskim;
3587 }
3588
3589 void
bfa_tskim_free(struct bfa_tskim_s * tskim)3590 bfa_tskim_free(struct bfa_tskim_s *tskim)
3591 {
3592 WARN_ON(!bfa_q_is_on_q_func(&tskim->itnim->tsk_q, &tskim->qe));
3593 list_del(&tskim->qe);
3594 list_add_tail(&tskim->qe, &tskim->fcpim->tskim_free_q);
3595 }
3596
3597 /*
3598 * Start a task management command.
3599 *
3600 * @param[in] tskim BFA task management command instance
3601 * @param[in] itnim i-t nexus for the task management command
3602 * @param[in] lun lun, if applicable
3603 * @param[in] tm_cmnd Task management command code.
3604 * @param[in] t_secs Timeout in seconds
3605 *
3606 * @return None.
3607 */
3608 void
bfa_tskim_start(struct bfa_tskim_s * tskim,struct bfa_itnim_s * itnim,struct scsi_lun lun,enum fcp_tm_cmnd tm_cmnd,u8 tsecs)3609 bfa_tskim_start(struct bfa_tskim_s *tskim, struct bfa_itnim_s *itnim,
3610 struct scsi_lun lun,
3611 enum fcp_tm_cmnd tm_cmnd, u8 tsecs)
3612 {
3613 tskim->itnim = itnim;
3614 tskim->lun = lun;
3615 tskim->tm_cmnd = tm_cmnd;
3616 tskim->tsecs = tsecs;
3617 tskim->notify = BFA_FALSE;
3618 bfa_stats(itnim, tm_cmnds);
3619
3620 list_add_tail(&tskim->qe, &itnim->tsk_q);
3621 bfa_sm_send_event(tskim, BFA_TSKIM_SM_START);
3622 }
3623
3624 void
bfa_tskim_res_recfg(struct bfa_s * bfa,u16 num_tskim_fw)3625 bfa_tskim_res_recfg(struct bfa_s *bfa, u16 num_tskim_fw)
3626 {
3627 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3628 struct list_head *qe;
3629 int i;
3630
3631 for (i = 0; i < (fcpim->num_tskim_reqs - num_tskim_fw); i++) {
3632 bfa_q_deq_tail(&fcpim->tskim_free_q, &qe);
3633 list_add_tail(qe, &fcpim->tskim_unused_q);
3634 }
3635 }
3636
3637 void
bfa_fcp_meminfo(struct bfa_iocfc_cfg_s * cfg,struct bfa_meminfo_s * minfo,struct bfa_s * bfa)3638 bfa_fcp_meminfo(struct bfa_iocfc_cfg_s *cfg, struct bfa_meminfo_s *minfo,
3639 struct bfa_s *bfa)
3640 {
3641 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3642 struct bfa_mem_kva_s *fcp_kva = BFA_MEM_FCP_KVA(bfa);
3643 struct bfa_mem_dma_s *seg_ptr;
3644 u16 nsegs, idx, per_seg_ios, num_io_req;
3645 u32 km_len = 0;
3646
3647 /*
3648 * ZERO for num_ioim_reqs and num_fwtio_reqs is allowed config value.
3649 * So if the values are non zero, adjust them appropriately.
3650 */
3651 if (cfg->fwcfg.num_ioim_reqs &&
3652 cfg->fwcfg.num_ioim_reqs < BFA_IOIM_MIN)
3653 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MIN;
3654 else if (cfg->fwcfg.num_ioim_reqs > BFA_IOIM_MAX)
3655 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
3656
3657 if (cfg->fwcfg.num_fwtio_reqs > BFA_FWTIO_MAX)
3658 cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX;
3659
3660 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
3661 if (num_io_req > BFA_IO_MAX) {
3662 if (cfg->fwcfg.num_ioim_reqs && cfg->fwcfg.num_fwtio_reqs) {
3663 cfg->fwcfg.num_ioim_reqs = BFA_IO_MAX/2;
3664 cfg->fwcfg.num_fwtio_reqs = BFA_IO_MAX/2;
3665 } else if (cfg->fwcfg.num_fwtio_reqs)
3666 cfg->fwcfg.num_fwtio_reqs = BFA_FWTIO_MAX;
3667 else
3668 cfg->fwcfg.num_ioim_reqs = BFA_IOIM_MAX;
3669 }
3670
3671 bfa_fcpim_meminfo(cfg, &km_len);
3672
3673 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
3674 km_len += num_io_req * sizeof(struct bfa_iotag_s);
3675 km_len += cfg->fwcfg.num_rports * sizeof(struct bfa_itn_s);
3676
3677 /* dma memory */
3678 nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
3679 per_seg_ios = BFI_MEM_NREQS_SEG(BFI_IOIM_SNSLEN);
3680
3681 bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
3682 if (num_io_req >= per_seg_ios) {
3683 num_io_req -= per_seg_ios;
3684 bfa_mem_dma_setup(minfo, seg_ptr,
3685 per_seg_ios * BFI_IOIM_SNSLEN);
3686 } else
3687 bfa_mem_dma_setup(minfo, seg_ptr,
3688 num_io_req * BFI_IOIM_SNSLEN);
3689 }
3690
3691 /* kva memory */
3692 bfa_mem_kva_setup(minfo, fcp_kva, km_len);
3693 }
3694
3695 void
bfa_fcp_attach(struct bfa_s * bfa,void * bfad,struct bfa_iocfc_cfg_s * cfg,struct bfa_pcidev_s * pcidev)3696 bfa_fcp_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
3697 struct bfa_pcidev_s *pcidev)
3698 {
3699 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3700 struct bfa_mem_dma_s *seg_ptr;
3701 u16 idx, nsegs, num_io_req;
3702
3703 fcp->max_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
3704 fcp->num_ioim_reqs = cfg->fwcfg.num_ioim_reqs;
3705 fcp->num_fwtio_reqs = cfg->fwcfg.num_fwtio_reqs;
3706 fcp->num_itns = cfg->fwcfg.num_rports;
3707 fcp->bfa = bfa;
3708
3709 /*
3710 * Setup the pool of snsbase addr's, that is passed to fw as
3711 * part of bfi_iocfc_cfg_s.
3712 */
3713 num_io_req = (cfg->fwcfg.num_ioim_reqs + cfg->fwcfg.num_fwtio_reqs);
3714 nsegs = BFI_MEM_DMA_NSEGS(num_io_req, BFI_IOIM_SNSLEN);
3715
3716 bfa_mem_dma_seg_iter(fcp, seg_ptr, nsegs, idx) {
3717
3718 if (!bfa_mem_dma_virt(seg_ptr))
3719 break;
3720
3721 fcp->snsbase[idx].pa = bfa_mem_dma_phys(seg_ptr);
3722 fcp->snsbase[idx].kva = bfa_mem_dma_virt(seg_ptr);
3723 bfa_iocfc_set_snsbase(bfa, idx, fcp->snsbase[idx].pa);
3724 }
3725
3726 fcp->throttle_update_required = 1;
3727 bfa_fcpim_attach(fcp, bfad, cfg, pcidev);
3728
3729 bfa_iotag_attach(fcp);
3730
3731 fcp->itn_arr = (struct bfa_itn_s *) bfa_mem_kva_curp(fcp);
3732 bfa_mem_kva_curp(fcp) = (u8 *)fcp->itn_arr +
3733 (fcp->num_itns * sizeof(struct bfa_itn_s));
3734 memset(fcp->itn_arr, 0,
3735 (fcp->num_itns * sizeof(struct bfa_itn_s)));
3736 }
3737
3738 void
bfa_fcp_iocdisable(struct bfa_s * bfa)3739 bfa_fcp_iocdisable(struct bfa_s *bfa)
3740 {
3741 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3742
3743 bfa_fcpim_iocdisable(fcp);
3744 }
3745
3746 void
bfa_fcp_res_recfg(struct bfa_s * bfa,u16 num_ioim_fw,u16 max_ioim_fw)3747 bfa_fcp_res_recfg(struct bfa_s *bfa, u16 num_ioim_fw, u16 max_ioim_fw)
3748 {
3749 struct bfa_fcp_mod_s *mod = BFA_FCP_MOD(bfa);
3750 struct list_head *qe;
3751 int i;
3752
3753 /* Update io throttle value only once during driver load time */
3754 if (!mod->throttle_update_required)
3755 return;
3756
3757 for (i = 0; i < (mod->num_ioim_reqs - num_ioim_fw); i++) {
3758 bfa_q_deq_tail(&mod->iotag_ioim_free_q, &qe);
3759 list_add_tail(qe, &mod->iotag_unused_q);
3760 }
3761
3762 if (mod->num_ioim_reqs != num_ioim_fw) {
3763 bfa_trc(bfa, mod->num_ioim_reqs);
3764 bfa_trc(bfa, num_ioim_fw);
3765 }
3766
3767 mod->max_ioim_reqs = max_ioim_fw;
3768 mod->num_ioim_reqs = num_ioim_fw;
3769 mod->throttle_update_required = 0;
3770 }
3771
3772 void
bfa_itn_create(struct bfa_s * bfa,struct bfa_rport_s * rport,void (* isr)(struct bfa_s * bfa,struct bfi_msg_s * m))3773 bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
3774 void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m))
3775 {
3776 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3777 struct bfa_itn_s *itn;
3778
3779 itn = BFA_ITN_FROM_TAG(fcp, rport->rport_tag);
3780 itn->isr = isr;
3781 }
3782
3783 /*
3784 * Itn interrupt processing.
3785 */
3786 void
bfa_itn_isr(struct bfa_s * bfa,struct bfi_msg_s * m)3787 bfa_itn_isr(struct bfa_s *bfa, struct bfi_msg_s *m)
3788 {
3789 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3790 union bfi_itn_i2h_msg_u msg;
3791 struct bfa_itn_s *itn;
3792
3793 msg.msg = m;
3794 itn = BFA_ITN_FROM_TAG(fcp, msg.create_rsp->bfa_handle);
3795
3796 if (itn->isr)
3797 itn->isr(bfa, m);
3798 else
3799 WARN_ON(1);
3800 }
3801
3802 void
bfa_iotag_attach(struct bfa_fcp_mod_s * fcp)3803 bfa_iotag_attach(struct bfa_fcp_mod_s *fcp)
3804 {
3805 struct bfa_iotag_s *iotag;
3806 u16 num_io_req, i;
3807
3808 iotag = (struct bfa_iotag_s *) bfa_mem_kva_curp(fcp);
3809 fcp->iotag_arr = iotag;
3810
3811 INIT_LIST_HEAD(&fcp->iotag_ioim_free_q);
3812 INIT_LIST_HEAD(&fcp->iotag_tio_free_q);
3813 INIT_LIST_HEAD(&fcp->iotag_unused_q);
3814
3815 num_io_req = fcp->num_ioim_reqs + fcp->num_fwtio_reqs;
3816 for (i = 0; i < num_io_req; i++, iotag++) {
3817 memset(iotag, 0, sizeof(struct bfa_iotag_s));
3818 iotag->tag = i;
3819 if (i < fcp->num_ioim_reqs)
3820 list_add_tail(&iotag->qe, &fcp->iotag_ioim_free_q);
3821 else
3822 list_add_tail(&iotag->qe, &fcp->iotag_tio_free_q);
3823 }
3824
3825 bfa_mem_kva_curp(fcp) = (u8 *) iotag;
3826 }
3827
3828
3829 /**
3830 * To send config req, first try to use throttle value from flash
3831 * If 0, then use driver parameter
3832 * We need to use min(flash_val, drv_val) because
3833 * memory allocation was done based on this cfg'd value
3834 */
3835 u16
bfa_fcpim_get_throttle_cfg(struct bfa_s * bfa,u16 drv_cfg_param)3836 bfa_fcpim_get_throttle_cfg(struct bfa_s *bfa, u16 drv_cfg_param)
3837 {
3838 u16 tmp;
3839 struct bfa_fcp_mod_s *fcp = BFA_FCP_MOD(bfa);
3840
3841 /*
3842 * If throttle value from flash is already in effect after driver is
3843 * loaded then until next load, always return current value instead
3844 * of actual flash value
3845 */
3846 if (!fcp->throttle_update_required)
3847 return (u16)fcp->num_ioim_reqs;
3848
3849 tmp = bfa_dconf_read_data_valid(bfa) ? bfa_fcpim_read_throttle(bfa) : 0;
3850 if (!tmp || (tmp > drv_cfg_param))
3851 tmp = drv_cfg_param;
3852
3853 return tmp;
3854 }
3855
3856 bfa_status_t
bfa_fcpim_write_throttle(struct bfa_s * bfa,u16 value)3857 bfa_fcpim_write_throttle(struct bfa_s *bfa, u16 value)
3858 {
3859 if (!bfa_dconf_get_min_cfg(bfa)) {
3860 BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.value = value;
3861 BFA_DCONF_MOD(bfa)->dconf->throttle_cfg.is_valid = 1;
3862 return BFA_STATUS_OK;
3863 }
3864
3865 return BFA_STATUS_FAILED;
3866 }
3867
3868 u16
bfa_fcpim_read_throttle(struct bfa_s * bfa)3869 bfa_fcpim_read_throttle(struct bfa_s *bfa)
3870 {
3871 struct bfa_throttle_cfg_s *throttle_cfg =
3872 &(BFA_DCONF_MOD(bfa)->dconf->throttle_cfg);
3873
3874 return ((!bfa_dconf_get_min_cfg(bfa)) ?
3875 ((throttle_cfg->is_valid == 1) ? (throttle_cfg->value) : 0) : 0);
3876 }
3877
3878 bfa_status_t
bfa_fcpim_throttle_set(struct bfa_s * bfa,u16 value)3879 bfa_fcpim_throttle_set(struct bfa_s *bfa, u16 value)
3880 {
3881 /* in min cfg no commands should run. */
3882 if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
3883 (!bfa_dconf_read_data_valid(bfa)))
3884 return BFA_STATUS_FAILED;
3885
3886 bfa_fcpim_write_throttle(bfa, value);
3887
3888 return bfa_dconf_update(bfa);
3889 }
3890
3891 bfa_status_t
bfa_fcpim_throttle_get(struct bfa_s * bfa,void * buf)3892 bfa_fcpim_throttle_get(struct bfa_s *bfa, void *buf)
3893 {
3894 struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa);
3895 struct bfa_defs_fcpim_throttle_s throttle;
3896
3897 if ((bfa_dconf_get_min_cfg(bfa) == BFA_TRUE) ||
3898 (!bfa_dconf_read_data_valid(bfa)))
3899 return BFA_STATUS_FAILED;
3900
3901 memset(&throttle, 0, sizeof(struct bfa_defs_fcpim_throttle_s));
3902
3903 throttle.cur_value = (u16)(fcpim->fcp->num_ioim_reqs);
3904 throttle.cfg_value = bfa_fcpim_read_throttle(bfa);
3905 if (!throttle.cfg_value)
3906 throttle.cfg_value = throttle.cur_value;
3907 throttle.max_value = (u16)(fcpim->fcp->max_ioim_reqs);
3908 memcpy(buf, &throttle, sizeof(struct bfa_defs_fcpim_throttle_s));
3909
3910 return BFA_STATUS_OK;
3911 }
3912
