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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
3 | * Enterprise Fibre Channel Host Bus Adapters. * | |
4 | * Refer to the README file included with this package for * | |
5 | * driver version and adapter support. * | |
6 | * Copyright (C) 2004 Emulex Corporation. * | |
7 | * www.emulex.com * | |
8 | * * | |
9 | * This program is free software; you can redistribute it and/or * | |
10 | * modify it under the terms of the GNU General Public License * | |
11 | * as published by the Free Software Foundation; either version 2 * | |
12 | * of the License, or (at your option) any later version. * | |
13 | * * | |
14 | * This program is distributed in the hope that it will be useful, * | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
17 | * GNU General Public License for more details, a copy of which * | |
18 | * can be found in the file COPYING included with this package. * | |
19 | *******************************************************************/ | |
20 | ||
21 | /* | |
22 | * $Id: lpfc_sli.c 1.232 2005/04/13 11:59:16EDT sf_support Exp $ | |
23 | */ | |
24 | ||
25 | #include <linux/blkdev.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/delay.h> | |
29 | ||
30 | #include <scsi/scsi_cmnd.h> | |
31 | #include <scsi/scsi_device.h> | |
32 | #include <scsi/scsi_host.h> | |
33 | ||
34 | #include "lpfc_hw.h" | |
35 | #include "lpfc_sli.h" | |
36 | #include "lpfc_disc.h" | |
37 | #include "lpfc_scsi.h" | |
38 | #include "lpfc.h" | |
39 | #include "lpfc_crtn.h" | |
40 | #include "lpfc_logmsg.h" | |
41 | #include "lpfc_compat.h" | |
42 | ||
43 | /* | |
44 | * Define macro to log: Mailbox command x%x cannot issue Data | |
45 | * This allows multiple uses of lpfc_msgBlk0311 | |
46 | * w/o perturbing log msg utility. | |
47 | */ | |
48 | #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \ | |
49 | lpfc_printf_log(phba, \ | |
50 | KERN_INFO, \ | |
51 | LOG_MBOX | LOG_SLI, \ | |
52 | "%d:0311 Mailbox command x%x cannot issue " \ | |
53 | "Data: x%x x%x x%x\n", \ | |
54 | phba->brd_no, \ | |
55 | mb->mbxCommand, \ | |
56 | phba->hba_state, \ | |
57 | psli->sli_flag, \ | |
58 | flag); | |
59 | ||
60 | ||
61 | /* There are only four IOCB completion types. */ | |
62 | typedef enum _lpfc_iocb_type { | |
63 | LPFC_UNKNOWN_IOCB, | |
64 | LPFC_UNSOL_IOCB, | |
65 | LPFC_SOL_IOCB, | |
66 | LPFC_ABORT_IOCB | |
67 | } lpfc_iocb_type; | |
68 | ||
69 | /* | |
70 | * Translate the iocb command to an iocb command type used to decide the final | |
71 | * disposition of each completed IOCB. | |
72 | */ | |
73 | static lpfc_iocb_type | |
74 | lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd) | |
75 | { | |
76 | lpfc_iocb_type type = LPFC_UNKNOWN_IOCB; | |
77 | ||
78 | if (iocb_cmnd > CMD_MAX_IOCB_CMD) | |
79 | return 0; | |
80 | ||
81 | switch (iocb_cmnd) { | |
82 | case CMD_XMIT_SEQUENCE_CR: | |
83 | case CMD_XMIT_SEQUENCE_CX: | |
84 | case CMD_XMIT_BCAST_CN: | |
85 | case CMD_XMIT_BCAST_CX: | |
86 | case CMD_ELS_REQUEST_CR: | |
87 | case CMD_ELS_REQUEST_CX: | |
88 | case CMD_CREATE_XRI_CR: | |
89 | case CMD_CREATE_XRI_CX: | |
90 | case CMD_GET_RPI_CN: | |
91 | case CMD_XMIT_ELS_RSP_CX: | |
92 | case CMD_GET_RPI_CR: | |
93 | case CMD_FCP_IWRITE_CR: | |
94 | case CMD_FCP_IWRITE_CX: | |
95 | case CMD_FCP_IREAD_CR: | |
96 | case CMD_FCP_IREAD_CX: | |
97 | case CMD_FCP_ICMND_CR: | |
98 | case CMD_FCP_ICMND_CX: | |
99 | case CMD_ADAPTER_MSG: | |
100 | case CMD_ADAPTER_DUMP: | |
101 | case CMD_XMIT_SEQUENCE64_CR: | |
102 | case CMD_XMIT_SEQUENCE64_CX: | |
103 | case CMD_XMIT_BCAST64_CN: | |
104 | case CMD_XMIT_BCAST64_CX: | |
105 | case CMD_ELS_REQUEST64_CR: | |
106 | case CMD_ELS_REQUEST64_CX: | |
107 | case CMD_FCP_IWRITE64_CR: | |
108 | case CMD_FCP_IWRITE64_CX: | |
109 | case CMD_FCP_IREAD64_CR: | |
110 | case CMD_FCP_IREAD64_CX: | |
111 | case CMD_FCP_ICMND64_CR: | |
112 | case CMD_FCP_ICMND64_CX: | |
113 | case CMD_GEN_REQUEST64_CR: | |
114 | case CMD_GEN_REQUEST64_CX: | |
115 | case CMD_XMIT_ELS_RSP64_CX: | |
116 | type = LPFC_SOL_IOCB; | |
117 | break; | |
118 | case CMD_ABORT_XRI_CN: | |
119 | case CMD_ABORT_XRI_CX: | |
120 | case CMD_CLOSE_XRI_CN: | |
121 | case CMD_CLOSE_XRI_CX: | |
122 | case CMD_XRI_ABORTED_CX: | |
123 | case CMD_ABORT_MXRI64_CN: | |
124 | type = LPFC_ABORT_IOCB; | |
125 | break; | |
126 | case CMD_RCV_SEQUENCE_CX: | |
127 | case CMD_RCV_ELS_REQ_CX: | |
128 | case CMD_RCV_SEQUENCE64_CX: | |
129 | case CMD_RCV_ELS_REQ64_CX: | |
130 | type = LPFC_UNSOL_IOCB; | |
131 | break; | |
132 | default: | |
133 | type = LPFC_UNKNOWN_IOCB; | |
134 | break; | |
135 | } | |
136 | ||
137 | return type; | |
138 | } | |
139 | ||
140 | static int | |
141 | lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb) | |
142 | { | |
143 | struct lpfc_sli *psli = &phba->sli; | |
144 | MAILBOX_t *pmbox = &pmb->mb; | |
145 | int i, rc; | |
146 | ||
147 | for (i = 0; i < psli->num_rings; i++) { | |
148 | phba->hba_state = LPFC_INIT_MBX_CMDS; | |
149 | lpfc_config_ring(phba, i, pmb); | |
150 | rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); | |
151 | if (rc != MBX_SUCCESS) { | |
152 | lpfc_printf_log(phba, | |
153 | KERN_ERR, | |
154 | LOG_INIT, | |
155 | "%d:0446 Adapter failed to init, " | |
156 | "mbxCmd x%x CFG_RING, mbxStatus x%x, " | |
157 | "ring %d\n", | |
158 | phba->brd_no, | |
159 | pmbox->mbxCommand, | |
160 | pmbox->mbxStatus, | |
161 | i); | |
162 | phba->hba_state = LPFC_HBA_ERROR; | |
163 | return -ENXIO; | |
164 | } | |
165 | } | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static int | |
170 | lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba, | |
171 | struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb) | |
172 | { | |
173 | uint16_t iotag; | |
174 | ||
175 | list_add_tail(&piocb->list, &pring->txcmplq); | |
176 | pring->txcmplq_cnt++; | |
177 | if (unlikely(pring->ringno == LPFC_ELS_RING)) | |
178 | mod_timer(&phba->els_tmofunc, | |
179 | jiffies + HZ * (phba->fc_ratov << 1)); | |
180 | ||
181 | if (pring->fast_lookup) { | |
182 | /* Setup fast lookup based on iotag for completion */ | |
183 | iotag = piocb->iocb.ulpIoTag; | |
184 | if (iotag && (iotag < pring->fast_iotag)) | |
185 | *(pring->fast_lookup + iotag) = piocb; | |
186 | else { | |
187 | ||
188 | /* Cmd ring <ringno> put: iotag <iotag> greater then | |
189 | configured max <fast_iotag> wd0 <icmd> */ | |
190 | lpfc_printf_log(phba, | |
191 | KERN_ERR, | |
192 | LOG_SLI, | |
193 | "%d:0316 Cmd ring %d put: iotag x%x " | |
194 | "greater then configured max x%x " | |
195 | "wd0 x%x\n", | |
196 | phba->brd_no, | |
197 | pring->ringno, iotag, | |
198 | pring->fast_iotag, | |
199 | *(((uint32_t *)(&piocb->iocb)) + 7)); | |
200 | } | |
201 | } | |
202 | return (0); | |
203 | } | |
204 | ||
205 | static struct lpfc_iocbq * | |
206 | lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring) | |
207 | { | |
208 | struct list_head *dlp; | |
209 | struct lpfc_iocbq *cmd_iocb; | |
210 | ||
211 | dlp = &pring->txq; | |
212 | cmd_iocb = NULL; | |
213 | list_remove_head((&pring->txq), cmd_iocb, | |
214 | struct lpfc_iocbq, | |
215 | list); | |
216 | if (cmd_iocb) { | |
217 | /* If the first ptr is not equal to the list header, | |
218 | * deque the IOCBQ_t and return it. | |
219 | */ | |
220 | pring->txq_cnt--; | |
221 | } | |
222 | return (cmd_iocb); | |
223 | } | |
224 | ||
225 | static IOCB_t * | |
226 | lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring) | |
227 | { | |
4cc2da1d | 228 | struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno]; |
dea3101e JB |
229 | uint32_t max_cmd_idx = pring->numCiocb; |
230 | IOCB_t *iocb = NULL; | |
231 | ||
232 | if ((pring->next_cmdidx == pring->cmdidx) && | |
233 | (++pring->next_cmdidx >= max_cmd_idx)) | |
234 | pring->next_cmdidx = 0; | |
235 | ||
236 | if (unlikely(pring->local_getidx == pring->next_cmdidx)) { | |
237 | ||
238 | pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); | |
239 | ||
240 | if (unlikely(pring->local_getidx >= max_cmd_idx)) { | |
241 | lpfc_printf_log(phba, KERN_ERR, LOG_SLI, | |
242 | "%d:0315 Ring %d issue: portCmdGet %d " | |
243 | "is bigger then cmd ring %d\n", | |
244 | phba->brd_no, pring->ringno, | |
245 | pring->local_getidx, max_cmd_idx); | |
246 | ||
247 | phba->hba_state = LPFC_HBA_ERROR; | |
248 | /* | |
249 | * All error attention handlers are posted to | |
250 | * worker thread | |
251 | */ | |
252 | phba->work_ha |= HA_ERATT; | |
253 | phba->work_hs = HS_FFER3; | |
254 | if (phba->work_wait) | |
255 | wake_up(phba->work_wait); | |
256 | ||
257 | return NULL; | |
258 | } | |
259 | ||
260 | if (pring->local_getidx == pring->next_cmdidx) | |
261 | return NULL; | |
262 | } | |
263 | ||
264 | iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx); | |
265 | ||
266 | return iocb; | |
267 | } | |
268 | ||
269 | static uint32_t | |
270 | lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring) | |
271 | { | |
272 | uint32_t search_start; | |
273 | ||
274 | if (pring->fast_lookup == NULL) { | |
275 | pring->iotag_ctr++; | |
276 | if (pring->iotag_ctr >= pring->iotag_max) | |
277 | pring->iotag_ctr = 1; | |
278 | return pring->iotag_ctr; | |
279 | } | |
280 | ||
281 | search_start = pring->iotag_ctr; | |
282 | ||
283 | do { | |
284 | pring->iotag_ctr++; | |
285 | if (pring->iotag_ctr >= pring->fast_iotag) | |
286 | pring->iotag_ctr = 1; | |
287 | ||
288 | if (*(pring->fast_lookup + pring->iotag_ctr) == NULL) | |
289 | return pring->iotag_ctr; | |
290 | ||
291 | } while (pring->iotag_ctr != search_start); | |
292 | ||
293 | /* | |
294 | * Outstanding I/O count for ring <ringno> is at max <fast_iotag> | |
295 | */ | |
296 | lpfc_printf_log(phba, | |
297 | KERN_ERR, | |
298 | LOG_SLI, | |
299 | "%d:0318 Outstanding I/O count for ring %d is at max x%x\n", | |
300 | phba->brd_no, | |
301 | pring->ringno, | |
302 | pring->fast_iotag); | |
303 | return (0); | |
304 | } | |
305 | ||
306 | static void | |
307 | lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
308 | IOCB_t *iocb, struct lpfc_iocbq *nextiocb) | |
309 | { | |
310 | /* | |
311 | * Allocate and set up an iotag | |
312 | */ | |
313 | nextiocb->iocb.ulpIoTag = | |
314 | lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]); | |
315 | ||
316 | /* | |
317 | * Issue iocb command to adapter | |
318 | */ | |
319 | lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t)); | |
320 | wmb(); | |
321 | pring->stats.iocb_cmd++; | |
322 | ||
323 | /* | |
324 | * If there is no completion routine to call, we can release the | |
325 | * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF, | |
326 | * that have no rsp ring completion, iocb_cmpl MUST be NULL. | |
327 | */ | |
328 | if (nextiocb->iocb_cmpl) | |
329 | lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb); | |
330 | else { | |
331 | list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list); | |
332 | } | |
333 | ||
334 | /* | |
335 | * Let the HBA know what IOCB slot will be the next one the | |
336 | * driver will put a command into. | |
337 | */ | |
338 | pring->cmdidx = pring->next_cmdidx; | |
339 | writeb(pring->cmdidx, phba->MBslimaddr | |
340 | + (SLIMOFF + (pring->ringno * 2)) * 4); | |
341 | } | |
342 | ||
343 | static void | |
344 | lpfc_sli_update_full_ring(struct lpfc_hba * phba, | |
345 | struct lpfc_sli_ring *pring) | |
346 | { | |
347 | int ringno = pring->ringno; | |
348 | ||
349 | pring->flag |= LPFC_CALL_RING_AVAILABLE; | |
350 | ||
351 | wmb(); | |
352 | ||
353 | /* | |
354 | * Set ring 'ringno' to SET R0CE_REQ in Chip Att register. | |
355 | * The HBA will tell us when an IOCB entry is available. | |
356 | */ | |
357 | writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr); | |
358 | readl(phba->CAregaddr); /* flush */ | |
359 | ||
360 | pring->stats.iocb_cmd_full++; | |
361 | } | |
362 | ||
363 | static void | |
364 | lpfc_sli_update_ring(struct lpfc_hba * phba, | |
365 | struct lpfc_sli_ring *pring) | |
366 | { | |
367 | int ringno = pring->ringno; | |
368 | ||
369 | /* | |
370 | * Tell the HBA that there is work to do in this ring. | |
371 | */ | |
372 | wmb(); | |
373 | writel(CA_R0ATT << (ringno * 4), phba->CAregaddr); | |
374 | readl(phba->CAregaddr); /* flush */ | |
375 | } | |
376 | ||
377 | static void | |
378 | lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring) | |
379 | { | |
380 | IOCB_t *iocb; | |
381 | struct lpfc_iocbq *nextiocb; | |
382 | ||
383 | /* | |
384 | * Check to see if: | |
385 | * (a) there is anything on the txq to send | |
386 | * (b) link is up | |
387 | * (c) link attention events can be processed (fcp ring only) | |
388 | * (d) IOCB processing is not blocked by the outstanding mbox command. | |
389 | */ | |
390 | if (pring->txq_cnt && | |
391 | (phba->hba_state > LPFC_LINK_DOWN) && | |
392 | (pring->ringno != phba->sli.fcp_ring || | |
393 | phba->sli.sli_flag & LPFC_PROCESS_LA) && | |
394 | !(pring->flag & LPFC_STOP_IOCB_MBX)) { | |
395 | ||
396 | while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && | |
397 | (nextiocb = lpfc_sli_ringtx_get(phba, pring))) | |
398 | lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); | |
399 | ||
400 | if (iocb) | |
401 | lpfc_sli_update_ring(phba, pring); | |
402 | else | |
403 | lpfc_sli_update_full_ring(phba, pring); | |
404 | } | |
405 | ||
406 | return; | |
407 | } | |
408 | ||
409 | /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */ | |
410 | static void | |
411 | lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno) | |
412 | { | |
4cc2da1d | 413 | struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno]; |
dea3101e JB |
414 | |
415 | /* If the ring is active, flag it */ | |
416 | if (phba->sli.ring[ringno].cmdringaddr) { | |
417 | if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) { | |
418 | phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX; | |
419 | /* | |
420 | * Force update of the local copy of cmdGetInx | |
421 | */ | |
422 | phba->sli.ring[ringno].local_getidx | |
423 | = le32_to_cpu(pgp->cmdGetInx); | |
424 | spin_lock_irq(phba->host->host_lock); | |
425 | lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]); | |
426 | spin_unlock_irq(phba->host->host_lock); | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | static int | |
432 | lpfc_sli_chk_mbx_command(uint8_t mbxCommand) | |
433 | { | |
434 | uint8_t ret; | |
435 | ||
436 | switch (mbxCommand) { | |
437 | case MBX_LOAD_SM: | |
438 | case MBX_READ_NV: | |
439 | case MBX_WRITE_NV: | |
440 | case MBX_RUN_BIU_DIAG: | |
441 | case MBX_INIT_LINK: | |
442 | case MBX_DOWN_LINK: | |
443 | case MBX_CONFIG_LINK: | |
444 | case MBX_CONFIG_RING: | |
445 | case MBX_RESET_RING: | |
446 | case MBX_READ_CONFIG: | |
447 | case MBX_READ_RCONFIG: | |
448 | case MBX_READ_SPARM: | |
449 | case MBX_READ_STATUS: | |
450 | case MBX_READ_RPI: | |
451 | case MBX_READ_XRI: | |
452 | case MBX_READ_REV: | |
453 | case MBX_READ_LNK_STAT: | |
454 | case MBX_REG_LOGIN: | |
455 | case MBX_UNREG_LOGIN: | |
456 | case MBX_READ_LA: | |
457 | case MBX_CLEAR_LA: | |
458 | case MBX_DUMP_MEMORY: | |
459 | case MBX_DUMP_CONTEXT: | |
460 | case MBX_RUN_DIAGS: | |
461 | case MBX_RESTART: | |
462 | case MBX_UPDATE_CFG: | |
463 | case MBX_DOWN_LOAD: | |
464 | case MBX_DEL_LD_ENTRY: | |
465 | case MBX_RUN_PROGRAM: | |
466 | case MBX_SET_MASK: | |
467 | case MBX_SET_SLIM: | |
468 | case MBX_UNREG_D_ID: | |
469 | case MBX_CONFIG_FARP: | |
470 | case MBX_LOAD_AREA: | |
471 | case MBX_RUN_BIU_DIAG64: | |
472 | case MBX_CONFIG_PORT: | |
473 | case MBX_READ_SPARM64: | |
474 | case MBX_READ_RPI64: | |
475 | case MBX_REG_LOGIN64: | |
476 | case MBX_READ_LA64: | |
477 | case MBX_FLASH_WR_ULA: | |
478 | case MBX_SET_DEBUG: | |
479 | case MBX_LOAD_EXP_ROM: | |
480 | ret = mbxCommand; | |
481 | break; | |
482 | default: | |
483 | ret = MBX_SHUTDOWN; | |
484 | break; | |
485 | } | |
486 | return (ret); | |
487 | } | |
488 | static void | |
489 | lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq) | |
490 | { | |
491 | wait_queue_head_t *pdone_q; | |
492 | ||
493 | /* | |
494 | * If pdone_q is empty, the driver thread gave up waiting and | |
495 | * continued running. | |
496 | */ | |
497 | pdone_q = (wait_queue_head_t *) pmboxq->context1; | |
498 | if (pdone_q) | |
499 | wake_up_interruptible(pdone_q); | |
500 | return; | |
501 | } | |
502 | ||
503 | void | |
504 | lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb) | |
505 | { | |
506 | struct lpfc_dmabuf *mp; | |
507 | mp = (struct lpfc_dmabuf *) (pmb->context1); | |
508 | if (mp) { | |
509 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
510 | kfree(mp); | |
511 | } | |
512 | mempool_free( pmb, phba->mbox_mem_pool); | |
513 | return; | |
514 | } | |
515 | ||
516 | int | |
517 | lpfc_sli_handle_mb_event(struct lpfc_hba * phba) | |
518 | { | |
519 | MAILBOX_t *mbox; | |
520 | MAILBOX_t *pmbox; | |
521 | LPFC_MBOXQ_t *pmb; | |
522 | struct lpfc_sli *psli; | |
523 | int i, rc; | |
524 | uint32_t process_next; | |
525 | ||
526 | psli = &phba->sli; | |
527 | /* We should only get here if we are in SLI2 mode */ | |
528 | if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) { | |
529 | return (1); | |
530 | } | |
531 | ||
532 | phba->sli.slistat.mbox_event++; | |
533 | ||
534 | /* Get a Mailbox buffer to setup mailbox commands for callback */ | |
535 | if ((pmb = phba->sli.mbox_active)) { | |
536 | pmbox = &pmb->mb; | |
4cc2da1d | 537 | mbox = &phba->slim2p->mbx; |
dea3101e JB |
538 | |
539 | /* First check out the status word */ | |
540 | lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t)); | |
541 | ||
542 | /* Sanity check to ensure the host owns the mailbox */ | |
543 | if (pmbox->mbxOwner != OWN_HOST) { | |
544 | /* Lets try for a while */ | |
545 | for (i = 0; i < 10240; i++) { | |
546 | /* First copy command data */ | |
547 | lpfc_sli_pcimem_bcopy(mbox, pmbox, | |
548 | sizeof (uint32_t)); | |
549 | if (pmbox->mbxOwner == OWN_HOST) | |
550 | goto mbout; | |
551 | } | |
552 | /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus | |
553 | <status> */ | |
554 | lpfc_printf_log(phba, | |
555 | KERN_ERR, | |
556 | LOG_MBOX | LOG_SLI, | |
557 | "%d:0304 Stray Mailbox Interrupt " | |
558 | "mbxCommand x%x mbxStatus x%x\n", | |
559 | phba->brd_no, | |
560 | pmbox->mbxCommand, | |
561 | pmbox->mbxStatus); | |
562 | ||
563 | spin_lock_irq(phba->host->host_lock); | |
564 | phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE; | |
565 | spin_unlock_irq(phba->host->host_lock); | |
566 | return (1); | |
567 | } | |
568 | ||
569 | mbout: | |
570 | del_timer_sync(&phba->sli.mbox_tmo); | |
571 | phba->work_hba_events &= ~WORKER_MBOX_TMO; | |
572 | ||
573 | /* | |
574 | * It is a fatal error if unknown mbox command completion. | |
575 | */ | |
576 | if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) == | |
577 | MBX_SHUTDOWN) { | |
578 | ||
579 | /* Unknow mailbox command compl */ | |
580 | lpfc_printf_log(phba, | |
581 | KERN_ERR, | |
582 | LOG_MBOX | LOG_SLI, | |
583 | "%d:0323 Unknown Mailbox command %x Cmpl\n", | |
584 | phba->brd_no, | |
585 | pmbox->mbxCommand); | |
586 | phba->hba_state = LPFC_HBA_ERROR; | |
587 | phba->work_hs = HS_FFER3; | |
588 | lpfc_handle_eratt(phba); | |
589 | return (0); | |
590 | } | |
591 | ||
592 | phba->sli.mbox_active = NULL; | |
593 | if (pmbox->mbxStatus) { | |
594 | phba->sli.slistat.mbox_stat_err++; | |
595 | if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) { | |
596 | /* Mbox cmd cmpl error - RETRYing */ | |
597 | lpfc_printf_log(phba, | |
598 | KERN_INFO, | |
599 | LOG_MBOX | LOG_SLI, | |
600 | "%d:0305 Mbox cmd cmpl error - " | |
601 | "RETRYing Data: x%x x%x x%x x%x\n", | |
602 | phba->brd_no, | |
603 | pmbox->mbxCommand, | |
604 | pmbox->mbxStatus, | |
605 | pmbox->un.varWords[0], | |
606 | phba->hba_state); | |
607 | pmbox->mbxStatus = 0; | |
608 | pmbox->mbxOwner = OWN_HOST; | |
609 | spin_lock_irq(phba->host->host_lock); | |
610 | phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
611 | spin_unlock_irq(phba->host->host_lock); | |
612 | rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); | |
613 | if (rc == MBX_SUCCESS) | |
614 | return (0); | |
615 | } | |
616 | } | |
617 | ||
618 | /* Mailbox cmd <cmd> Cmpl <cmpl> */ | |
619 | lpfc_printf_log(phba, | |
620 | KERN_INFO, | |
621 | LOG_MBOX | LOG_SLI, | |
622 | "%d:0307 Mailbox cmd x%x Cmpl x%p " | |
623 | "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n", | |
624 | phba->brd_no, | |
625 | pmbox->mbxCommand, | |
626 | pmb->mbox_cmpl, | |
627 | *((uint32_t *) pmbox), | |
628 | pmbox->un.varWords[0], | |
629 | pmbox->un.varWords[1], | |
630 | pmbox->un.varWords[2], | |
631 | pmbox->un.varWords[3], | |
632 | pmbox->un.varWords[4], | |
633 | pmbox->un.varWords[5], | |
634 | pmbox->un.varWords[6], | |
635 | pmbox->un.varWords[7]); | |
636 | ||
637 | if (pmb->mbox_cmpl) { | |
638 | lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE); | |
639 | pmb->mbox_cmpl(phba,pmb); | |
640 | } | |
641 | } | |
642 | ||
643 | ||
644 | do { | |
645 | process_next = 0; /* by default don't loop */ | |
646 | spin_lock_irq(phba->host->host_lock); | |
647 | phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
648 | ||
649 | /* Process next mailbox command if there is one */ | |
650 | if ((pmb = lpfc_mbox_get(phba))) { | |
651 | spin_unlock_irq(phba->host->host_lock); | |
652 | rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); | |
653 | if (rc == MBX_NOT_FINISHED) { | |
654 | pmb->mb.mbxStatus = MBX_NOT_FINISHED; | |
655 | pmb->mbox_cmpl(phba,pmb); | |
656 | process_next = 1; | |
657 | continue; /* loop back */ | |
658 | } | |
659 | } else { | |
660 | spin_unlock_irq(phba->host->host_lock); | |
661 | /* Turn on IOCB processing */ | |
662 | for (i = 0; i < phba->sli.num_rings; i++) { | |
663 | lpfc_sli_turn_on_ring(phba, i); | |
664 | } | |
665 | ||
666 | /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */ | |
667 | while (!list_empty(&phba->freebufList)) { | |
668 | struct lpfc_dmabuf *mp; | |
669 | ||
670 | mp = NULL; | |
671 | list_remove_head((&phba->freebufList), | |
672 | mp, | |
673 | struct lpfc_dmabuf, | |
674 | list); | |
675 | if (mp) { | |
676 | lpfc_mbuf_free(phba, mp->virt, | |
677 | mp->phys); | |
678 | kfree(mp); | |
679 | } | |
680 | } | |
681 | } | |
682 | ||
683 | } while (process_next); | |
684 | ||
685 | return (0); | |
686 | } | |
687 | static int | |
688 | lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
689 | struct lpfc_iocbq *saveq) | |
690 | { | |
691 | IOCB_t * irsp; | |
692 | WORD5 * w5p; | |
693 | uint32_t Rctl, Type; | |
694 | uint32_t match, i; | |
695 | ||
696 | match = 0; | |
697 | irsp = &(saveq->iocb); | |
698 | if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) | |
699 | || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) { | |
700 | Rctl = FC_ELS_REQ; | |
701 | Type = FC_ELS_DATA; | |
702 | } else { | |
703 | w5p = | |
704 | (WORD5 *) & (saveq->iocb.un. | |
705 | ulpWord[5]); | |
706 | Rctl = w5p->hcsw.Rctl; | |
707 | Type = w5p->hcsw.Type; | |
708 | ||
709 | /* Firmware Workaround */ | |
710 | if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) && | |
711 | (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) { | |
712 | Rctl = FC_ELS_REQ; | |
713 | Type = FC_ELS_DATA; | |
714 | w5p->hcsw.Rctl = Rctl; | |
715 | w5p->hcsw.Type = Type; | |
716 | } | |
717 | } | |
718 | /* unSolicited Responses */ | |
719 | if (pring->prt[0].profile) { | |
720 | (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq); | |
721 | match = 1; | |
722 | } else { | |
723 | /* We must search, based on rctl / type | |
724 | for the right routine */ | |
725 | for (i = 0; i < pring->num_mask; | |
726 | i++) { | |
727 | if ((pring->prt[i].rctl == | |
728 | Rctl) | |
729 | && (pring->prt[i]. | |
730 | type == Type)) { | |
731 | (pring->prt[i].lpfc_sli_rcv_unsol_event) | |
732 | (phba, pring, saveq); | |
733 | match = 1; | |
734 | break; | |
735 | } | |
736 | } | |
737 | } | |
738 | if (match == 0) { | |
739 | /* Unexpected Rctl / Type received */ | |
740 | /* Ring <ringno> handler: unexpected | |
741 | Rctl <Rctl> Type <Type> received */ | |
742 | lpfc_printf_log(phba, | |
743 | KERN_WARNING, | |
744 | LOG_SLI, | |
745 | "%d:0313 Ring %d handler: unexpected Rctl x%x " | |
746 | "Type x%x received \n", | |
747 | phba->brd_no, | |
748 | pring->ringno, | |
749 | Rctl, | |
750 | Type); | |
751 | } | |
752 | return(1); | |
753 | } | |
754 | ||
755 | static struct lpfc_iocbq * | |
756 | lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring, | |
757 | struct lpfc_iocbq * prspiocb) | |
758 | { | |
759 | IOCB_t *icmd = NULL; | |
760 | IOCB_t *irsp = NULL; | |
761 | struct lpfc_iocbq *cmd_iocb; | |
762 | struct lpfc_iocbq *iocb, *next_iocb; | |
763 | uint16_t iotag; | |
764 | ||
765 | irsp = &prspiocb->iocb; | |
766 | iotag = irsp->ulpIoTag; | |
767 | cmd_iocb = NULL; | |
768 | ||
769 | /* Search through txcmpl from the begining */ | |
770 | list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) { | |
771 | icmd = &iocb->iocb; | |
772 | if (iotag == icmd->ulpIoTag) { | |
773 | /* Found a match. */ | |
774 | cmd_iocb = iocb; | |
775 | list_del(&iocb->list); | |
776 | pring->txcmplq_cnt--; | |
777 | break; | |
778 | } | |
779 | } | |
780 | ||
781 | return (cmd_iocb); | |
782 | } | |
783 | ||
784 | static struct lpfc_iocbq * | |
785 | lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba, | |
786 | struct lpfc_sli_ring * pring, | |
787 | struct lpfc_iocbq * prspiocb) | |
788 | { | |
789 | IOCB_t *irsp = NULL; | |
790 | struct lpfc_iocbq *cmd_iocb = NULL; | |
791 | uint16_t iotag; | |
792 | ||
793 | if (unlikely(pring->fast_lookup == NULL)) | |
794 | return NULL; | |
795 | ||
796 | /* Use fast lookup based on iotag for completion */ | |
797 | irsp = &prspiocb->iocb; | |
798 | iotag = irsp->ulpIoTag; | |
799 | if (iotag < pring->fast_iotag) { | |
800 | cmd_iocb = *(pring->fast_lookup + iotag); | |
801 | *(pring->fast_lookup + iotag) = NULL; | |
802 | if (cmd_iocb) { | |
803 | list_del(&cmd_iocb->list); | |
804 | pring->txcmplq_cnt--; | |
805 | return cmd_iocb; | |
806 | } else { | |
807 | /* | |
808 | * This is clearly an error. A ring that uses iotags | |
809 | * should never have a interrupt for a completion that | |
810 | * is not on the ring. Return NULL and log a error. | |
811 | */ | |
812 | lpfc_printf_log(phba, KERN_ERR, LOG_SLI, | |
813 | "%d:0327 Rsp ring %d error - command " | |
814 | "completion for iotag x%x not found\n", | |
815 | phba->brd_no, pring->ringno, iotag); | |
816 | return NULL; | |
817 | } | |
818 | } | |
819 | ||
820 | /* | |
821 | * Rsp ring <ringno> get: iotag <iotag> greater then | |
822 | * configured max <fast_iotag> wd0 <irsp>. This is an | |
823 | * error. Just return NULL. | |
824 | */ | |
825 | lpfc_printf_log(phba, KERN_ERR, LOG_SLI, | |
826 | "%d:0317 Rsp ring %d get: iotag x%x greater then " | |
827 | "configured max x%x wd0 x%x\n", | |
828 | phba->brd_no, pring->ringno, iotag, pring->fast_iotag, | |
829 | *(((uint32_t *) irsp) + 7)); | |
830 | return NULL; | |
831 | } | |
832 | ||
833 | static int | |
834 | lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, | |
835 | struct lpfc_iocbq *saveq) | |
836 | { | |
837 | struct lpfc_iocbq * cmdiocbp; | |
838 | int rc = 1; | |
839 | unsigned long iflag; | |
840 | ||
841 | /* Based on the iotag field, get the cmd IOCB from the txcmplq */ | |
842 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
843 | cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq); | |
844 | if (cmdiocbp) { | |
845 | if (cmdiocbp->iocb_cmpl) { | |
846 | /* | |
847 | * Post all ELS completions to the worker thread. | |
848 | * All other are passed to the completion callback. | |
849 | */ | |
850 | if (pring->ringno == LPFC_ELS_RING) { | |
851 | spin_unlock_irqrestore(phba->host->host_lock, | |
852 | iflag); | |
853 | (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); | |
854 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
855 | } | |
856 | else { | |
857 | if (cmdiocbp->iocb_flag & LPFC_IO_POLL) | |
858 | rc = 0; | |
859 | ||
860 | spin_unlock_irqrestore(phba->host->host_lock, | |
861 | iflag); | |
862 | (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); | |
863 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
864 | } | |
865 | } else { | |
866 | list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list); | |
867 | } | |
868 | } else { | |
869 | /* | |
870 | * Unknown initiating command based on the response iotag. | |
871 | * This could be the case on the ELS ring because of | |
872 | * lpfc_els_abort(). | |
873 | */ | |
874 | if (pring->ringno != LPFC_ELS_RING) { | |
875 | /* | |
876 | * Ring <ringno> handler: unexpected completion IoTag | |
877 | * <IoTag> | |
878 | */ | |
879 | lpfc_printf_log(phba, | |
880 | KERN_WARNING, | |
881 | LOG_SLI, | |
882 | "%d:0322 Ring %d handler: unexpected " | |
883 | "completion IoTag x%x Data: x%x x%x x%x x%x\n", | |
884 | phba->brd_no, | |
885 | pring->ringno, | |
886 | saveq->iocb.ulpIoTag, | |
887 | saveq->iocb.ulpStatus, | |
888 | saveq->iocb.un.ulpWord[4], | |
889 | saveq->iocb.ulpCommand, | |
890 | saveq->iocb.ulpContext); | |
891 | } | |
892 | } | |
893 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
894 | return rc; | |
895 | } | |
896 | ||
897 | /* | |
898 | * This routine presumes LPFC_FCP_RING handling and doesn't bother | |
899 | * to check it explicitly. | |
900 | */ | |
901 | static int | |
902 | lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba, | |
903 | struct lpfc_sli_ring * pring, uint32_t mask) | |
904 | { | |
4cc2da1d | 905 | struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno]; |
dea3101e JB |
906 | IOCB_t *irsp = NULL; |
907 | struct lpfc_iocbq *cmdiocbq = NULL; | |
908 | struct lpfc_iocbq rspiocbq; | |
dea3101e JB |
909 | uint32_t status; |
910 | uint32_t portRspPut, portRspMax; | |
911 | int rc = 1; | |
912 | lpfc_iocb_type type; | |
913 | unsigned long iflag; | |
914 | uint32_t rsp_cmpl = 0; | |
915 | void __iomem *to_slim; | |
916 | ||
917 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
918 | pring->stats.iocb_event++; | |
919 | ||
dea3101e JB |
920 | /* |
921 | * The next available response entry should never exceed the maximum | |
922 | * entries. If it does, treat it as an adapter hardware error. | |
923 | */ | |
924 | portRspMax = pring->numRiocb; | |
925 | portRspPut = le32_to_cpu(pgp->rspPutInx); | |
926 | if (unlikely(portRspPut >= portRspMax)) { | |
927 | /* | |
928 | * Ring <ringno> handler: portRspPut <portRspPut> is bigger then | |
929 | * rsp ring <portRspMax> | |
930 | */ | |
931 | lpfc_printf_log(phba, KERN_ERR, LOG_SLI, | |
932 | "%d:0312 Ring %d handler: portRspPut %d " | |
933 | "is bigger then rsp ring %d\n", | |
934 | phba->brd_no, pring->ringno, portRspPut, | |
935 | portRspMax); | |
936 | ||
937 | phba->hba_state = LPFC_HBA_ERROR; | |
938 | ||
939 | /* All error attention handlers are posted to worker thread */ | |
940 | phba->work_ha |= HA_ERATT; | |
941 | phba->work_hs = HS_FFER3; | |
942 | if (phba->work_wait) | |
943 | wake_up(phba->work_wait); | |
944 | ||
945 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
946 | return 1; | |
947 | } | |
948 | ||
949 | rmb(); | |
950 | while (pring->rspidx != portRspPut) { | |
951 | irsp = (IOCB_t *) IOCB_ENTRY(pring->rspringaddr, pring->rspidx); | |
952 | type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK); | |
953 | pring->stats.iocb_rsp++; | |
954 | rsp_cmpl++; | |
955 | ||
956 | if (unlikely(irsp->ulpStatus)) { | |
957 | /* Rsp ring <ringno> error: IOCB */ | |
958 | lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, | |
959 | "%d:0326 Rsp Ring %d error: IOCB Data: " | |
960 | "x%x x%x x%x x%x x%x x%x x%x x%x\n", | |
961 | phba->brd_no, pring->ringno, | |
962 | irsp->un.ulpWord[0], irsp->un.ulpWord[1], | |
963 | irsp->un.ulpWord[2], irsp->un.ulpWord[3], | |
964 | irsp->un.ulpWord[4], irsp->un.ulpWord[5], | |
965 | *(((uint32_t *) irsp) + 6), | |
966 | *(((uint32_t *) irsp) + 7)); | |
967 | } | |
968 | ||
969 | switch (type) { | |
970 | case LPFC_ABORT_IOCB: | |
971 | case LPFC_SOL_IOCB: | |
972 | /* | |
973 | * Idle exchange closed via ABTS from port. No iocb | |
974 | * resources need to be recovered. | |
975 | */ | |
976 | if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) { | |
977 | printk(KERN_INFO "%s: IOCB cmd 0x%x processed. " | |
978 | "Skipping completion\n", __FUNCTION__, | |
979 | irsp->ulpCommand); | |
980 | break; | |
981 | } | |
982 | ||
983 | rspiocbq.iocb.un.ulpWord[4] = irsp->un.ulpWord[4]; | |
984 | rspiocbq.iocb.ulpStatus = irsp->ulpStatus; | |
985 | rspiocbq.iocb.ulpContext = irsp->ulpContext; | |
986 | rspiocbq.iocb.ulpIoTag = irsp->ulpIoTag; | |
987 | cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba, | |
988 | pring, | |
989 | &rspiocbq); | |
990 | if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) { | |
991 | spin_unlock_irqrestore( | |
992 | phba->host->host_lock, iflag); | |
993 | (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, | |
994 | &rspiocbq); | |
995 | spin_lock_irqsave(phba->host->host_lock, | |
996 | iflag); | |
997 | } | |
998 | break; | |
999 | default: | |
1000 | if (irsp->ulpCommand == CMD_ADAPTER_MSG) { | |
1001 | char adaptermsg[LPFC_MAX_ADPTMSG]; | |
1002 | memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); | |
1003 | memcpy(&adaptermsg[0], (uint8_t *) irsp, | |
1004 | MAX_MSG_DATA); | |
1005 | dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s", | |
1006 | phba->brd_no, adaptermsg); | |
1007 | } else { | |
1008 | /* Unknown IOCB command */ | |
1009 | lpfc_printf_log(phba, KERN_ERR, LOG_SLI, | |
1010 | "%d:0321 Unknown IOCB command " | |
1011 | "Data: x%x, x%x x%x x%x x%x\n", | |
1012 | phba->brd_no, type, irsp->ulpCommand, | |
1013 | irsp->ulpStatus, irsp->ulpIoTag, | |
1014 | irsp->ulpContext); | |
1015 | } | |
1016 | break; | |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * The response IOCB has been processed. Update the ring | |
1021 | * pointer in SLIM. If the port response put pointer has not | |
1022 | * been updated, sync the pgp->rspPutInx and fetch the new port | |
1023 | * response put pointer. | |
1024 | */ | |
1025 | if (++pring->rspidx >= portRspMax) | |
1026 | pring->rspidx = 0; | |
1027 | ||
1028 | to_slim = phba->MBslimaddr + | |
1029 | (SLIMOFF + (pring->ringno * 2) + 1) * 4; | |
1030 | writeb(pring->rspidx, to_slim); | |
1031 | ||
1032 | if (pring->rspidx == portRspPut) | |
1033 | portRspPut = le32_to_cpu(pgp->rspPutInx); | |
1034 | } | |
1035 | ||
1036 | if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) { | |
1037 | pring->stats.iocb_rsp_full++; | |
1038 | status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); | |
1039 | writel(status, phba->CAregaddr); | |
1040 | readl(phba->CAregaddr); | |
1041 | } | |
1042 | if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { | |
1043 | pring->flag &= ~LPFC_CALL_RING_AVAILABLE; | |
1044 | pring->stats.iocb_cmd_empty++; | |
1045 | ||
1046 | /* Force update of the local copy of cmdGetInx */ | |
1047 | pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); | |
1048 | lpfc_sli_resume_iocb(phba, pring); | |
1049 | ||
1050 | if ((pring->lpfc_sli_cmd_available)) | |
1051 | (pring->lpfc_sli_cmd_available) (phba, pring); | |
1052 | ||
1053 | } | |
1054 | ||
1055 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
1056 | return rc; | |
1057 | } | |
1058 | ||
1059 | ||
1060 | int | |
1061 | lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba, | |
1062 | struct lpfc_sli_ring * pring, uint32_t mask) | |
1063 | { | |
1064 | IOCB_t *entry; | |
1065 | IOCB_t *irsp = NULL; | |
1066 | struct lpfc_iocbq *rspiocbp = NULL; | |
1067 | struct lpfc_iocbq *next_iocb; | |
1068 | struct lpfc_iocbq *cmdiocbp; | |
1069 | struct lpfc_iocbq *saveq; | |
1070 | struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; | |
4cc2da1d | 1071 | struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno]; |
dea3101e JB |
1072 | uint8_t iocb_cmd_type; |
1073 | lpfc_iocb_type type; | |
1074 | uint32_t status, free_saveq; | |
1075 | uint32_t portRspPut, portRspMax; | |
1076 | int rc = 1; | |
1077 | unsigned long iflag; | |
1078 | void __iomem *to_slim; | |
1079 | ||
1080 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
1081 | pring->stats.iocb_event++; | |
1082 | ||
dea3101e JB |
1083 | /* |
1084 | * The next available response entry should never exceed the maximum | |
1085 | * entries. If it does, treat it as an adapter hardware error. | |
1086 | */ | |
1087 | portRspMax = pring->numRiocb; | |
1088 | portRspPut = le32_to_cpu(pgp->rspPutInx); | |
1089 | if (portRspPut >= portRspMax) { | |
1090 | /* | |
1091 | * Ring <ringno> handler: portRspPut <portRspPut> is bigger then | |
1092 | * rsp ring <portRspMax> | |
1093 | */ | |
1094 | lpfc_printf_log(phba, | |
1095 | KERN_ERR, | |
1096 | LOG_SLI, | |
1097 | "%d:0312 Ring %d handler: portRspPut %d " | |
1098 | "is bigger then rsp ring %d\n", | |
1099 | phba->brd_no, | |
1100 | pring->ringno, portRspPut, portRspMax); | |
1101 | ||
1102 | phba->hba_state = LPFC_HBA_ERROR; | |
1103 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
1104 | ||
1105 | phba->work_hs = HS_FFER3; | |
1106 | lpfc_handle_eratt(phba); | |
1107 | ||
1108 | return 1; | |
1109 | } | |
1110 | ||
1111 | rmb(); | |
1112 | lpfc_iocb_list = &phba->lpfc_iocb_list; | |
1113 | while (pring->rspidx != portRspPut) { | |
1114 | /* | |
1115 | * Build a completion list and call the appropriate handler. | |
1116 | * The process is to get the next available response iocb, get | |
1117 | * a free iocb from the list, copy the response data into the | |
1118 | * free iocb, insert to the continuation list, and update the | |
1119 | * next response index to slim. This process makes response | |
1120 | * iocb's in the ring available to DMA as fast as possible but | |
1121 | * pays a penalty for a copy operation. Since the iocb is | |
1122 | * only 32 bytes, this penalty is considered small relative to | |
1123 | * the PCI reads for register values and a slim write. When | |
1124 | * the ulpLe field is set, the entire Command has been | |
1125 | * received. | |
1126 | */ | |
1127 | entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx); | |
1128 | list_remove_head(lpfc_iocb_list, rspiocbp, struct lpfc_iocbq, | |
1129 | list); | |
1130 | if (rspiocbp == NULL) { | |
1131 | printk(KERN_ERR "%s: out of buffers! Failing " | |
1132 | "completion.\n", __FUNCTION__); | |
1133 | break; | |
1134 | } | |
1135 | ||
1136 | lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t)); | |
1137 | irsp = &rspiocbp->iocb; | |
1138 | ||
1139 | if (++pring->rspidx >= portRspMax) | |
1140 | pring->rspidx = 0; | |
1141 | ||
1142 | to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2) | |
1143 | + 1) * 4; | |
1144 | writeb(pring->rspidx, to_slim); | |
1145 | ||
1146 | if (list_empty(&(pring->iocb_continueq))) { | |
1147 | list_add(&rspiocbp->list, &(pring->iocb_continueq)); | |
1148 | } else { | |
1149 | list_add_tail(&rspiocbp->list, | |
1150 | &(pring->iocb_continueq)); | |
1151 | } | |
1152 | ||
1153 | pring->iocb_continueq_cnt++; | |
1154 | if (irsp->ulpLe) { | |
1155 | /* | |
1156 | * By default, the driver expects to free all resources | |
1157 | * associated with this iocb completion. | |
1158 | */ | |
1159 | free_saveq = 1; | |
1160 | saveq = list_get_first(&pring->iocb_continueq, | |
1161 | struct lpfc_iocbq, list); | |
1162 | irsp = &(saveq->iocb); | |
1163 | list_del_init(&pring->iocb_continueq); | |
1164 | pring->iocb_continueq_cnt = 0; | |
1165 | ||
1166 | pring->stats.iocb_rsp++; | |
1167 | ||
1168 | if (irsp->ulpStatus) { | |
1169 | /* Rsp ring <ringno> error: IOCB */ | |
1170 | lpfc_printf_log(phba, | |
1171 | KERN_WARNING, | |
1172 | LOG_SLI, | |
1173 | "%d:0328 Rsp Ring %d error: IOCB Data: " | |
1174 | "x%x x%x x%x x%x x%x x%x x%x x%x\n", | |
1175 | phba->brd_no, | |
1176 | pring->ringno, | |
1177 | irsp->un.ulpWord[0], | |
1178 | irsp->un.ulpWord[1], | |
1179 | irsp->un.ulpWord[2], | |
1180 | irsp->un.ulpWord[3], | |
1181 | irsp->un.ulpWord[4], | |
1182 | irsp->un.ulpWord[5], | |
1183 | *(((uint32_t *) irsp) + 6), | |
1184 | *(((uint32_t *) irsp) + 7)); | |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | * Fetch the IOCB command type and call the correct | |
1189 | * completion routine. Solicited and Unsolicited | |
1190 | * IOCBs on the ELS ring get freed back to the | |
1191 | * lpfc_iocb_list by the discovery kernel thread. | |
1192 | */ | |
1193 | iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK; | |
1194 | type = lpfc_sli_iocb_cmd_type(iocb_cmd_type); | |
1195 | if (type == LPFC_SOL_IOCB) { | |
1196 | spin_unlock_irqrestore(phba->host->host_lock, | |
1197 | iflag); | |
1198 | rc = lpfc_sli_process_sol_iocb(phba, pring, | |
1199 | saveq); | |
1200 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
1201 | } else if (type == LPFC_UNSOL_IOCB) { | |
1202 | spin_unlock_irqrestore(phba->host->host_lock, | |
1203 | iflag); | |
1204 | rc = lpfc_sli_process_unsol_iocb(phba, pring, | |
1205 | saveq); | |
1206 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
1207 | } else if (type == LPFC_ABORT_IOCB) { | |
1208 | if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) && | |
1209 | ((cmdiocbp = | |
1210 | lpfc_sli_txcmpl_ring_search_slow(pring, | |
1211 | saveq)))) { | |
1212 | /* Call the specified completion | |
1213 | routine */ | |
1214 | if (cmdiocbp->iocb_cmpl) { | |
1215 | spin_unlock_irqrestore( | |
1216 | phba->host->host_lock, | |
1217 | iflag); | |
1218 | (cmdiocbp->iocb_cmpl) (phba, | |
1219 | cmdiocbp, saveq); | |
1220 | spin_lock_irqsave( | |
1221 | phba->host->host_lock, | |
1222 | iflag); | |
1223 | } else { | |
1224 | list_add_tail(&cmdiocbp->list, | |
1225 | lpfc_iocb_list); | |
1226 | } | |
1227 | } | |
1228 | } else if (type == LPFC_UNKNOWN_IOCB) { | |
1229 | if (irsp->ulpCommand == CMD_ADAPTER_MSG) { | |
1230 | ||
1231 | char adaptermsg[LPFC_MAX_ADPTMSG]; | |
1232 | ||
1233 | memset(adaptermsg, 0, | |
1234 | LPFC_MAX_ADPTMSG); | |
1235 | memcpy(&adaptermsg[0], (uint8_t *) irsp, | |
1236 | MAX_MSG_DATA); | |
1237 | dev_warn(&((phba->pcidev)->dev), | |
1238 | "lpfc%d: %s", | |
1239 | phba->brd_no, adaptermsg); | |
1240 | } else { | |
1241 | /* Unknown IOCB command */ | |
1242 | lpfc_printf_log(phba, | |
1243 | KERN_ERR, | |
1244 | LOG_SLI, | |
1245 | "%d:0321 Unknown IOCB command " | |
1246 | "Data: x%x x%x x%x x%x\n", | |
1247 | phba->brd_no, | |
1248 | irsp->ulpCommand, | |
1249 | irsp->ulpStatus, | |
1250 | irsp->ulpIoTag, | |
1251 | irsp->ulpContext); | |
1252 | } | |
1253 | } | |
1254 | ||
1255 | if (free_saveq) { | |
1256 | if (!list_empty(&saveq->list)) { | |
1257 | list_for_each_entry_safe(rspiocbp, | |
1258 | next_iocb, | |
1259 | &saveq->list, | |
1260 | list) { | |
1261 | list_add_tail(&rspiocbp->list, | |
1262 | lpfc_iocb_list); | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | list_add_tail(&saveq->list, lpfc_iocb_list); | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | /* | |
1271 | * If the port response put pointer has not been updated, sync | |
1272 | * the pgp->rspPutInx in the MAILBOX_tand fetch the new port | |
1273 | * response put pointer. | |
1274 | */ | |
1275 | if (pring->rspidx == portRspPut) { | |
1276 | portRspPut = le32_to_cpu(pgp->rspPutInx); | |
1277 | } | |
1278 | } /* while (pring->rspidx != portRspPut) */ | |
1279 | ||
1280 | if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) { | |
1281 | /* At least one response entry has been freed */ | |
1282 | pring->stats.iocb_rsp_full++; | |
1283 | /* SET RxRE_RSP in Chip Att register */ | |
1284 | status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); | |
1285 | writel(status, phba->CAregaddr); | |
1286 | readl(phba->CAregaddr); /* flush */ | |
1287 | } | |
1288 | if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { | |
1289 | pring->flag &= ~LPFC_CALL_RING_AVAILABLE; | |
1290 | pring->stats.iocb_cmd_empty++; | |
1291 | ||
1292 | /* Force update of the local copy of cmdGetInx */ | |
1293 | pring->local_getidx = le32_to_cpu(pgp->cmdGetInx); | |
1294 | lpfc_sli_resume_iocb(phba, pring); | |
1295 | ||
1296 | if ((pring->lpfc_sli_cmd_available)) | |
1297 | (pring->lpfc_sli_cmd_available) (phba, pring); | |
1298 | ||
1299 | } | |
1300 | ||
1301 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
1302 | return rc; | |
1303 | } | |
1304 | ||
1305 | int | |
1306 | lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) | |
1307 | { | |
1308 | struct lpfc_iocbq *iocb, *next_iocb; | |
1309 | IOCB_t *icmd = NULL, *cmd = NULL; | |
1310 | int errcnt; | |
1311 | uint16_t iotag; | |
1312 | ||
1313 | errcnt = 0; | |
1314 | ||
1315 | /* Error everything on txq and txcmplq | |
1316 | * First do the txq. | |
1317 | */ | |
1318 | spin_lock_irq(phba->host->host_lock); | |
1319 | list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { | |
1320 | list_del_init(&iocb->list); | |
1321 | if (iocb->iocb_cmpl) { | |
1322 | icmd = &iocb->iocb; | |
1323 | icmd->ulpStatus = IOSTAT_LOCAL_REJECT; | |
1324 | icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; | |
1325 | spin_unlock_irq(phba->host->host_lock); | |
1326 | (iocb->iocb_cmpl) (phba, iocb, iocb); | |
1327 | spin_lock_irq(phba->host->host_lock); | |
1328 | } else { | |
1329 | list_add_tail(&iocb->list, &phba->lpfc_iocb_list); | |
1330 | } | |
1331 | } | |
1332 | pring->txq_cnt = 0; | |
1333 | INIT_LIST_HEAD(&(pring->txq)); | |
1334 | ||
1335 | /* Next issue ABTS for everything on the txcmplq */ | |
1336 | list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { | |
1337 | cmd = &iocb->iocb; | |
1338 | ||
1339 | /* | |
1340 | * Imediate abort of IOCB, clear fast_lookup entry, | |
1341 | * if any, deque and call compl | |
1342 | */ | |
1343 | iotag = cmd->ulpIoTag; | |
1344 | if (iotag && pring->fast_lookup && | |
1345 | (iotag < pring->fast_iotag)) | |
1346 | pring->fast_lookup[iotag] = NULL; | |
1347 | ||
1348 | list_del_init(&iocb->list); | |
1349 | pring->txcmplq_cnt--; | |
1350 | ||
1351 | if (iocb->iocb_cmpl) { | |
1352 | cmd->ulpStatus = IOSTAT_LOCAL_REJECT; | |
1353 | cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; | |
1354 | spin_unlock_irq(phba->host->host_lock); | |
1355 | (iocb->iocb_cmpl) (phba, iocb, iocb); | |
1356 | spin_lock_irq(phba->host->host_lock); | |
1357 | } else { | |
1358 | list_add_tail(&iocb->list, &phba->lpfc_iocb_list); | |
1359 | } | |
1360 | } | |
1361 | ||
1362 | INIT_LIST_HEAD(&pring->txcmplq); | |
1363 | pring->txcmplq_cnt = 0; | |
1364 | spin_unlock_irq(phba->host->host_lock); | |
1365 | ||
1366 | return errcnt; | |
1367 | } | |
1368 | ||
1369 | /****************************************************************************** | |
1370 | * lpfc_sli_send_reset | |
1371 | * | |
1372 | * Note: After returning from this function, the HBA cannot be accessed for | |
1373 | * 1 ms. Since we do not wish to delay in interrupt context, it is the | |
1374 | * responsibility of the caller to perform the mdelay(1) and flush via readl(). | |
1375 | ******************************************************************************/ | |
1376 | static int | |
1377 | lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post) | |
1378 | { | |
1379 | MAILBOX_t *swpmb; | |
1380 | volatile uint32_t word0; | |
1381 | void __iomem *to_slim; | |
1382 | unsigned long flags = 0; | |
1383 | ||
1384 | spin_lock_irqsave(phba->host->host_lock, flags); | |
1385 | ||
1386 | /* A board reset must use REAL SLIM. */ | |
1387 | phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE; | |
1388 | ||
1389 | word0 = 0; | |
1390 | swpmb = (MAILBOX_t *) & word0; | |
1391 | swpmb->mbxCommand = MBX_RESTART; | |
1392 | swpmb->mbxHc = 1; | |
1393 | ||
1394 | to_slim = phba->MBslimaddr; | |
1395 | writel(*(uint32_t *) swpmb, to_slim); | |
1396 | readl(to_slim); /* flush */ | |
1397 | ||
1398 | /* Only skip post after fc_ffinit is completed */ | |
1399 | if (skip_post) { | |
1400 | word0 = 1; /* This is really setting up word1 */ | |
1401 | } else { | |
1402 | word0 = 0; /* This is really setting up word1 */ | |
1403 | } | |
1404 | to_slim = phba->MBslimaddr + sizeof (uint32_t); | |
1405 | writel(*(uint32_t *) swpmb, to_slim); | |
1406 | readl(to_slim); /* flush */ | |
1407 | ||
1408 | /* Turn off parity checking and serr during the physical reset */ | |
1409 | pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value); | |
1410 | pci_write_config_word(phba->pcidev, PCI_COMMAND, | |
1411 | (phba->pci_cfg_value & | |
1412 | ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); | |
1413 | ||
1414 | writel(HC_INITFF, phba->HCregaddr); | |
1415 | ||
1416 | phba->hba_state = LPFC_INIT_START; | |
1417 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
1418 | ||
1419 | return 0; | |
1420 | } | |
1421 | ||
1422 | static int | |
1423 | lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post) | |
1424 | { | |
1425 | struct lpfc_sli_ring *pring; | |
1426 | int i; | |
1427 | struct lpfc_dmabuf *mp, *next_mp; | |
1428 | unsigned long flags = 0; | |
1429 | ||
1430 | lpfc_sli_send_reset(phba, skip_post); | |
1431 | mdelay(1); | |
1432 | ||
1433 | spin_lock_irqsave(phba->host->host_lock, flags); | |
1434 | /* Risk the write on flush case ie no delay after the readl */ | |
1435 | readl(phba->HCregaddr); /* flush */ | |
1436 | /* Now toggle INITFF bit set by lpfc_sli_send_reset */ | |
1437 | writel(0, phba->HCregaddr); | |
1438 | readl(phba->HCregaddr); /* flush */ | |
1439 | ||
1440 | /* Restore PCI cmd register */ | |
1441 | pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value); | |
1442 | ||
1443 | /* perform board reset */ | |
1444 | phba->fc_eventTag = 0; | |
1445 | phba->fc_myDID = 0; | |
1446 | phba->fc_prevDID = Mask_DID; | |
1447 | ||
1448 | /* Reset HBA */ | |
1449 | lpfc_printf_log(phba, | |
1450 | KERN_INFO, | |
1451 | LOG_SLI, | |
1452 | "%d:0325 Reset HBA Data: x%x x%x x%x\n", | |
1453 | phba->brd_no, | |
1454 | phba->hba_state, | |
1455 | phba->sli.sli_flag, | |
1456 | skip_post); | |
1457 | ||
1458 | /* Initialize relevant SLI info */ | |
1459 | for (i = 0; i < phba->sli.num_rings; i++) { | |
1460 | pring = &phba->sli.ring[i]; | |
1461 | pring->flag = 0; | |
1462 | pring->rspidx = 0; | |
1463 | pring->next_cmdidx = 0; | |
1464 | pring->local_getidx = 0; | |
1465 | pring->cmdidx = 0; | |
1466 | pring->missbufcnt = 0; | |
1467 | } | |
1468 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
1469 | ||
1470 | if (skip_post) { | |
1471 | mdelay(100); | |
1472 | } else { | |
1473 | mdelay(2000); | |
1474 | } | |
1475 | ||
1476 | spin_lock_irqsave(phba->host->host_lock, flags); | |
1477 | /* Cleanup preposted buffers on the ELS ring */ | |
1478 | pring = &phba->sli.ring[LPFC_ELS_RING]; | |
1479 | list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { | |
1480 | list_del(&mp->list); | |
1481 | pring->postbufq_cnt--; | |
1482 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
1483 | kfree(mp); | |
1484 | } | |
1485 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
1486 | ||
1487 | for (i = 0; i < phba->sli.num_rings; i++) | |
1488 | lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]); | |
1489 | ||
1490 | return 0; | |
1491 | } | |
1492 | ||
1493 | static int | |
1494 | lpfc_sli_chipset_init(struct lpfc_hba *phba) | |
1495 | { | |
1496 | uint32_t status, i = 0; | |
1497 | ||
1498 | /* Read the HBA Host Status Register */ | |
1499 | status = readl(phba->HSregaddr); | |
1500 | ||
1501 | /* Check status register to see what current state is */ | |
1502 | i = 0; | |
1503 | while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) { | |
1504 | ||
1505 | /* Check every 100ms for 5 retries, then every 500ms for 5, then | |
1506 | * every 2.5 sec for 5, then reset board and every 2.5 sec for | |
1507 | * 4. | |
1508 | */ | |
1509 | if (i++ >= 20) { | |
1510 | /* Adapter failed to init, timeout, status reg | |
1511 | <status> */ | |
1512 | lpfc_printf_log(phba, | |
1513 | KERN_ERR, | |
1514 | LOG_INIT, | |
1515 | "%d:0436 Adapter failed to init, " | |
1516 | "timeout, status reg x%x\n", | |
1517 | phba->brd_no, | |
1518 | status); | |
1519 | phba->hba_state = LPFC_HBA_ERROR; | |
1520 | return -ETIMEDOUT; | |
1521 | } | |
1522 | ||
1523 | /* Check to see if any errors occurred during init */ | |
1524 | if (status & HS_FFERM) { | |
1525 | /* ERROR: During chipset initialization */ | |
1526 | /* Adapter failed to init, chipset, status reg | |
1527 | <status> */ | |
1528 | lpfc_printf_log(phba, | |
1529 | KERN_ERR, | |
1530 | LOG_INIT, | |
1531 | "%d:0437 Adapter failed to init, " | |
1532 | "chipset, status reg x%x\n", | |
1533 | phba->brd_no, | |
1534 | status); | |
1535 | phba->hba_state = LPFC_HBA_ERROR; | |
1536 | return -EIO; | |
1537 | } | |
1538 | ||
1539 | if (i <= 5) { | |
1540 | msleep(10); | |
1541 | } else if (i <= 10) { | |
1542 | msleep(500); | |
1543 | } else { | |
1544 | msleep(2500); | |
1545 | } | |
1546 | ||
1547 | if (i == 15) { | |
1548 | lpfc_sli_brdreset(phba, 0); | |
1549 | } | |
1550 | /* Read the HBA Host Status Register */ | |
1551 | status = readl(phba->HSregaddr); | |
1552 | } | |
1553 | ||
1554 | /* Check to see if any errors occurred during init */ | |
1555 | if (status & HS_FFERM) { | |
1556 | /* ERROR: During chipset initialization */ | |
1557 | /* Adapter failed to init, chipset, status reg <status> */ | |
1558 | lpfc_printf_log(phba, | |
1559 | KERN_ERR, | |
1560 | LOG_INIT, | |
1561 | "%d:0438 Adapter failed to init, chipset, " | |
1562 | "status reg x%x\n", | |
1563 | phba->brd_no, | |
1564 | status); | |
1565 | phba->hba_state = LPFC_HBA_ERROR; | |
1566 | return -EIO; | |
1567 | } | |
1568 | ||
1569 | /* Clear all interrupt enable conditions */ | |
1570 | writel(0, phba->HCregaddr); | |
1571 | readl(phba->HCregaddr); /* flush */ | |
1572 | ||
1573 | /* setup host attn register */ | |
1574 | writel(0xffffffff, phba->HAregaddr); | |
1575 | readl(phba->HAregaddr); /* flush */ | |
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | int | |
1580 | lpfc_sli_hba_setup(struct lpfc_hba * phba) | |
1581 | { | |
1582 | LPFC_MBOXQ_t *pmb; | |
1583 | uint32_t resetcount = 0, rc = 0, done = 0; | |
1584 | ||
1585 | pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
1586 | if (!pmb) { | |
1587 | phba->hba_state = LPFC_HBA_ERROR; | |
1588 | return -ENOMEM; | |
1589 | } | |
1590 | ||
1591 | while (resetcount < 2 && !done) { | |
1592 | phba->hba_state = 0; | |
1593 | lpfc_sli_brdreset(phba, 0); | |
1594 | msleep(2500); | |
1595 | rc = lpfc_sli_chipset_init(phba); | |
1596 | if (rc) | |
1597 | break; | |
1598 | ||
1599 | resetcount++; | |
1600 | ||
1601 | /* Call pre CONFIG_PORT mailbox command initialization. A value of 0 | |
1602 | * means the call was successful. Any other nonzero value is a failure, | |
1603 | * but if ERESTART is returned, the driver may reset the HBA and try | |
1604 | * again. | |
1605 | */ | |
1606 | rc = lpfc_config_port_prep(phba); | |
1607 | if (rc == -ERESTART) { | |
1608 | phba->hba_state = 0; | |
1609 | continue; | |
1610 | } else if (rc) { | |
1611 | break; | |
1612 | } | |
1613 | ||
1614 | phba->hba_state = LPFC_INIT_MBX_CMDS; | |
1615 | lpfc_config_port(phba, pmb); | |
1616 | rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); | |
1617 | if (rc == MBX_SUCCESS) | |
1618 | done = 1; | |
1619 | else { | |
1620 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
1621 | "%d:0442 Adapter failed to init, mbxCmd x%x " | |
1622 | "CONFIG_PORT, mbxStatus x%x Data: x%x\n", | |
1623 | phba->brd_no, pmb->mb.mbxCommand, | |
1624 | pmb->mb.mbxStatus, 0); | |
1625 | phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE; | |
1626 | } | |
1627 | } | |
1628 | if (!done) | |
1629 | goto lpfc_sli_hba_setup_error; | |
1630 | ||
1631 | rc = lpfc_sli_ring_map(phba, pmb); | |
1632 | ||
1633 | if (rc) | |
1634 | goto lpfc_sli_hba_setup_error; | |
1635 | ||
1636 | phba->sli.sli_flag |= LPFC_PROCESS_LA; | |
1637 | ||
1638 | rc = lpfc_config_port_post(phba); | |
1639 | if (rc) | |
1640 | goto lpfc_sli_hba_setup_error; | |
1641 | ||
1642 | goto lpfc_sli_hba_setup_exit; | |
1643 | lpfc_sli_hba_setup_error: | |
1644 | phba->hba_state = LPFC_HBA_ERROR; | |
1645 | lpfc_sli_hba_setup_exit: | |
1646 | mempool_free(pmb, phba->mbox_mem_pool); | |
1647 | return rc; | |
1648 | } | |
1649 | ||
1650 | static void | |
1651 | lpfc_mbox_abort(struct lpfc_hba * phba) | |
1652 | { | |
1653 | LPFC_MBOXQ_t *pmbox; | |
1654 | MAILBOX_t *mb; | |
1655 | ||
1656 | if (phba->sli.mbox_active) { | |
1657 | del_timer_sync(&phba->sli.mbox_tmo); | |
1658 | phba->work_hba_events &= ~WORKER_MBOX_TMO; | |
1659 | pmbox = phba->sli.mbox_active; | |
1660 | mb = &pmbox->mb; | |
1661 | phba->sli.mbox_active = NULL; | |
1662 | if (pmbox->mbox_cmpl) { | |
1663 | mb->mbxStatus = MBX_NOT_FINISHED; | |
1664 | (pmbox->mbox_cmpl) (phba, pmbox); | |
1665 | } | |
1666 | phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
1667 | } | |
1668 | ||
1669 | /* Abort all the non active mailbox commands. */ | |
1670 | spin_lock_irq(phba->host->host_lock); | |
1671 | pmbox = lpfc_mbox_get(phba); | |
1672 | while (pmbox) { | |
1673 | mb = &pmbox->mb; | |
1674 | if (pmbox->mbox_cmpl) { | |
1675 | mb->mbxStatus = MBX_NOT_FINISHED; | |
1676 | spin_unlock_irq(phba->host->host_lock); | |
1677 | (pmbox->mbox_cmpl) (phba, pmbox); | |
1678 | spin_lock_irq(phba->host->host_lock); | |
1679 | } | |
1680 | pmbox = lpfc_mbox_get(phba); | |
1681 | } | |
1682 | spin_unlock_irq(phba->host->host_lock); | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | /*! lpfc_mbox_timeout | |
1687 | * | |
1688 | * \pre | |
1689 | * \post | |
1690 | * \param hba Pointer to per struct lpfc_hba structure | |
1691 | * \param l1 Pointer to the driver's mailbox queue. | |
1692 | * \return | |
1693 | * void | |
1694 | * | |
1695 | * \b Description: | |
1696 | * | |
1697 | * This routine handles mailbox timeout events at timer interrupt context. | |
1698 | */ | |
1699 | void | |
1700 | lpfc_mbox_timeout(unsigned long ptr) | |
1701 | { | |
1702 | struct lpfc_hba *phba; | |
1703 | unsigned long iflag; | |
1704 | ||
1705 | phba = (struct lpfc_hba *)ptr; | |
1706 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
1707 | if (!(phba->work_hba_events & WORKER_MBOX_TMO)) { | |
1708 | phba->work_hba_events |= WORKER_MBOX_TMO; | |
1709 | if (phba->work_wait) | |
1710 | wake_up(phba->work_wait); | |
1711 | } | |
1712 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
1713 | } | |
1714 | ||
1715 | void | |
1716 | lpfc_mbox_timeout_handler(struct lpfc_hba *phba) | |
1717 | { | |
1718 | LPFC_MBOXQ_t *pmbox; | |
1719 | MAILBOX_t *mb; | |
1720 | ||
1721 | spin_lock_irq(phba->host->host_lock); | |
1722 | if (!(phba->work_hba_events & WORKER_MBOX_TMO)) { | |
1723 | spin_unlock_irq(phba->host->host_lock); | |
1724 | return; | |
1725 | } | |
1726 | ||
1727 | pmbox = phba->sli.mbox_active; | |
1728 | mb = &pmbox->mb; | |
1729 | ||
1730 | /* Mbox cmd <mbxCommand> timeout */ | |
1731 | lpfc_printf_log(phba, | |
1732 | KERN_ERR, | |
1733 | LOG_MBOX | LOG_SLI, | |
1734 | "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n", | |
1735 | phba->brd_no, | |
1736 | mb->mbxCommand, | |
1737 | phba->hba_state, | |
1738 | phba->sli.sli_flag, | |
1739 | phba->sli.mbox_active); | |
1740 | ||
1741 | if (phba->sli.mbox_active == pmbox) { | |
1742 | phba->sli.mbox_active = NULL; | |
1743 | if (pmbox->mbox_cmpl) { | |
1744 | mb->mbxStatus = MBX_NOT_FINISHED; | |
1745 | spin_unlock_irq(phba->host->host_lock); | |
1746 | (pmbox->mbox_cmpl) (phba, pmbox); | |
1747 | spin_lock_irq(phba->host->host_lock); | |
1748 | } | |
1749 | phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
1750 | } | |
1751 | ||
1752 | spin_unlock_irq(phba->host->host_lock); | |
1753 | lpfc_mbox_abort(phba); | |
1754 | return; | |
1755 | } | |
1756 | ||
1757 | int | |
1758 | lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag) | |
1759 | { | |
dea3101e JB |
1760 | MAILBOX_t *mb; |
1761 | struct lpfc_sli *psli; | |
1762 | uint32_t status, evtctr; | |
1763 | uint32_t ha_copy; | |
1764 | int i; | |
1765 | unsigned long drvr_flag = 0; | |
1766 | volatile uint32_t word0, ldata; | |
1767 | void __iomem *to_slim; | |
1768 | ||
1769 | psli = &phba->sli; | |
1770 | ||
1771 | spin_lock_irqsave(phba->host->host_lock, drvr_flag); | |
1772 | ||
1773 | ||
1774 | mb = &pmbox->mb; | |
1775 | status = MBX_SUCCESS; | |
1776 | ||
1777 | if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { | |
1778 | /* Polling for a mbox command when another one is already active | |
1779 | * is not allowed in SLI. Also, the driver must have established | |
1780 | * SLI2 mode to queue and process multiple mbox commands. | |
1781 | */ | |
1782 | ||
1783 | if (flag & MBX_POLL) { | |
1784 | spin_unlock_irqrestore(phba->host->host_lock, | |
1785 | drvr_flag); | |
1786 | ||
1787 | /* Mbox command <mbxCommand> cannot issue */ | |
1788 | LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) | |
1789 | return (MBX_NOT_FINISHED); | |
1790 | } | |
1791 | ||
1792 | if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) { | |
1793 | spin_unlock_irqrestore(phba->host->host_lock, | |
1794 | drvr_flag); | |
1795 | /* Mbox command <mbxCommand> cannot issue */ | |
1796 | LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) | |
1797 | return (MBX_NOT_FINISHED); | |
1798 | } | |
1799 | ||
1800 | /* Handle STOP IOCB processing flag. This is only meaningful | |
1801 | * if we are not polling for mbox completion. | |
1802 | */ | |
1803 | if (flag & MBX_STOP_IOCB) { | |
1804 | flag &= ~MBX_STOP_IOCB; | |
1805 | /* Now flag each ring */ | |
1806 | for (i = 0; i < psli->num_rings; i++) { | |
1807 | /* If the ring is active, flag it */ | |
1808 | if (psli->ring[i].cmdringaddr) { | |
1809 | psli->ring[i].flag |= | |
1810 | LPFC_STOP_IOCB_MBX; | |
1811 | } | |
1812 | } | |
1813 | } | |
1814 | ||
1815 | /* Another mailbox command is still being processed, queue this | |
1816 | * command to be processed later. | |
1817 | */ | |
1818 | lpfc_mbox_put(phba, pmbox); | |
1819 | ||
1820 | /* Mbox cmd issue - BUSY */ | |
1821 | lpfc_printf_log(phba, | |
1822 | KERN_INFO, | |
1823 | LOG_MBOX | LOG_SLI, | |
1824 | "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n", | |
1825 | phba->brd_no, | |
1826 | mb->mbxCommand, | |
1827 | phba->hba_state, | |
1828 | psli->sli_flag, | |
1829 | flag); | |
1830 | ||
1831 | psli->slistat.mbox_busy++; | |
1832 | spin_unlock_irqrestore(phba->host->host_lock, | |
1833 | drvr_flag); | |
1834 | ||
1835 | return (MBX_BUSY); | |
1836 | } | |
1837 | ||
1838 | /* Handle STOP IOCB processing flag. This is only meaningful | |
1839 | * if we are not polling for mbox completion. | |
1840 | */ | |
1841 | if (flag & MBX_STOP_IOCB) { | |
1842 | flag &= ~MBX_STOP_IOCB; | |
1843 | if (flag == MBX_NOWAIT) { | |
1844 | /* Now flag each ring */ | |
1845 | for (i = 0; i < psli->num_rings; i++) { | |
1846 | /* If the ring is active, flag it */ | |
1847 | if (psli->ring[i].cmdringaddr) { | |
1848 | psli->ring[i].flag |= | |
1849 | LPFC_STOP_IOCB_MBX; | |
1850 | } | |
1851 | } | |
1852 | } | |
1853 | } | |
1854 | ||
1855 | psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; | |
1856 | ||
1857 | /* If we are not polling, we MUST be in SLI2 mode */ | |
1858 | if (flag != MBX_POLL) { | |
1859 | if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) { | |
1860 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
1861 | spin_unlock_irqrestore(phba->host->host_lock, | |
1862 | drvr_flag); | |
1863 | /* Mbox command <mbxCommand> cannot issue */ | |
1864 | LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag); | |
1865 | return (MBX_NOT_FINISHED); | |
1866 | } | |
1867 | /* timeout active mbox command */ | |
1868 | mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO); | |
1869 | } | |
1870 | ||
1871 | /* Mailbox cmd <cmd> issue */ | |
1872 | lpfc_printf_log(phba, | |
1873 | KERN_INFO, | |
1874 | LOG_MBOX | LOG_SLI, | |
1875 | "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n", | |
1876 | phba->brd_no, | |
1877 | mb->mbxCommand, | |
1878 | phba->hba_state, | |
1879 | psli->sli_flag, | |
1880 | flag); | |
1881 | ||
1882 | psli->slistat.mbox_cmd++; | |
1883 | evtctr = psli->slistat.mbox_event; | |
1884 | ||
1885 | /* next set own bit for the adapter and copy over command word */ | |
1886 | mb->mbxOwner = OWN_CHIP; | |
1887 | ||
1888 | if (psli->sli_flag & LPFC_SLI2_ACTIVE) { | |
dea3101e | 1889 | /* First copy command data to host SLIM area */ |
4cc2da1d | 1890 | lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE); |
dea3101e JB |
1891 | } else { |
1892 | if (mb->mbxCommand == MBX_CONFIG_PORT) { | |
1893 | /* copy command data into host mbox for cmpl */ | |
4cc2da1d JSEC |
1894 | lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, |
1895 | MAILBOX_CMD_SIZE); | |
dea3101e JB |
1896 | } |
1897 | ||
1898 | /* First copy mbox command data to HBA SLIM, skip past first | |
1899 | word */ | |
1900 | to_slim = phba->MBslimaddr + sizeof (uint32_t); | |
1901 | lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0], | |
1902 | MAILBOX_CMD_SIZE - sizeof (uint32_t)); | |
1903 | ||
1904 | /* Next copy over first word, with mbxOwner set */ | |
1905 | ldata = *((volatile uint32_t *)mb); | |
1906 | to_slim = phba->MBslimaddr; | |
1907 | writel(ldata, to_slim); | |
1908 | readl(to_slim); /* flush */ | |
1909 | ||
1910 | if (mb->mbxCommand == MBX_CONFIG_PORT) { | |
1911 | /* switch over to host mailbox */ | |
1912 | psli->sli_flag |= LPFC_SLI2_ACTIVE; | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | wmb(); | |
1917 | /* interrupt board to doit right away */ | |
1918 | writel(CA_MBATT, phba->CAregaddr); | |
1919 | readl(phba->CAregaddr); /* flush */ | |
1920 | ||
1921 | switch (flag) { | |
1922 | case MBX_NOWAIT: | |
1923 | /* Don't wait for it to finish, just return */ | |
1924 | psli->mbox_active = pmbox; | |
1925 | break; | |
1926 | ||
1927 | case MBX_POLL: | |
1928 | i = 0; | |
1929 | psli->mbox_active = NULL; | |
1930 | if (psli->sli_flag & LPFC_SLI2_ACTIVE) { | |
1931 | /* First read mbox status word */ | |
4cc2da1d | 1932 | word0 = *((volatile uint32_t *)&phba->slim2p->mbx); |
dea3101e JB |
1933 | word0 = le32_to_cpu(word0); |
1934 | } else { | |
1935 | /* First read mbox status word */ | |
1936 | word0 = readl(phba->MBslimaddr); | |
1937 | } | |
1938 | ||
1939 | /* Read the HBA Host Attention Register */ | |
1940 | ha_copy = readl(phba->HAregaddr); | |
1941 | ||
1942 | /* Wait for command to complete */ | |
1943 | while (((word0 & OWN_CHIP) == OWN_CHIP) | |
1944 | || !(ha_copy & HA_MBATT)) { | |
1945 | if (i++ >= 100) { | |
1946 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
1947 | spin_unlock_irqrestore(phba->host->host_lock, | |
1948 | drvr_flag); | |
1949 | return (MBX_NOT_FINISHED); | |
1950 | } | |
1951 | ||
1952 | /* Check if we took a mbox interrupt while we were | |
1953 | polling */ | |
1954 | if (((word0 & OWN_CHIP) != OWN_CHIP) | |
1955 | && (evtctr != psli->slistat.mbox_event)) | |
1956 | break; | |
1957 | ||
1958 | spin_unlock_irqrestore(phba->host->host_lock, | |
1959 | drvr_flag); | |
1960 | ||
1961 | /* Can be in interrupt context, do not sleep */ | |
1962 | /* (or might be called with interrupts disabled) */ | |
1963 | mdelay(i); | |
1964 | ||
1965 | spin_lock_irqsave(phba->host->host_lock, drvr_flag); | |
1966 | ||
1967 | if (psli->sli_flag & LPFC_SLI2_ACTIVE) { | |
1968 | /* First copy command data */ | |
4cc2da1d JSEC |
1969 | word0 = *((volatile uint32_t *) |
1970 | &phba->slim2p->mbx); | |
dea3101e JB |
1971 | word0 = le32_to_cpu(word0); |
1972 | if (mb->mbxCommand == MBX_CONFIG_PORT) { | |
1973 | MAILBOX_t *slimmb; | |
1974 | volatile uint32_t slimword0; | |
1975 | /* Check real SLIM for any errors */ | |
1976 | slimword0 = readl(phba->MBslimaddr); | |
1977 | slimmb = (MAILBOX_t *) & slimword0; | |
1978 | if (((slimword0 & OWN_CHIP) != OWN_CHIP) | |
1979 | && slimmb->mbxStatus) { | |
1980 | psli->sli_flag &= | |
1981 | ~LPFC_SLI2_ACTIVE; | |
1982 | word0 = slimword0; | |
1983 | } | |
1984 | } | |
1985 | } else { | |
1986 | /* First copy command data */ | |
1987 | word0 = readl(phba->MBslimaddr); | |
1988 | } | |
1989 | /* Read the HBA Host Attention Register */ | |
1990 | ha_copy = readl(phba->HAregaddr); | |
1991 | } | |
1992 | ||
1993 | if (psli->sli_flag & LPFC_SLI2_ACTIVE) { | |
dea3101e | 1994 | /* copy results back to user */ |
4cc2da1d JSEC |
1995 | lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb, |
1996 | MAILBOX_CMD_SIZE); | |
dea3101e JB |
1997 | } else { |
1998 | /* First copy command data */ | |
1999 | lpfc_memcpy_from_slim(mb, phba->MBslimaddr, | |
2000 | MAILBOX_CMD_SIZE); | |
2001 | if ((mb->mbxCommand == MBX_DUMP_MEMORY) && | |
2002 | pmbox->context2) { | |
2003 | lpfc_memcpy_from_slim((void *)pmbox->context2, | |
2004 | phba->MBslimaddr + DMP_RSP_OFFSET, | |
2005 | mb->un.varDmp.word_cnt); | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | writel(HA_MBATT, phba->HAregaddr); | |
2010 | readl(phba->HAregaddr); /* flush */ | |
2011 | ||
2012 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
2013 | status = mb->mbxStatus; | |
2014 | } | |
2015 | ||
2016 | spin_unlock_irqrestore(phba->host->host_lock, drvr_flag); | |
2017 | return (status); | |
2018 | } | |
2019 | ||
2020 | static int | |
2021 | lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, | |
2022 | struct lpfc_iocbq * piocb) | |
2023 | { | |
2024 | /* Insert the caller's iocb in the txq tail for later processing. */ | |
2025 | list_add_tail(&piocb->list, &pring->txq); | |
2026 | pring->txq_cnt++; | |
2027 | return (0); | |
2028 | } | |
2029 | ||
2030 | static struct lpfc_iocbq * | |
2031 | lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
2032 | struct lpfc_iocbq ** piocb) | |
2033 | { | |
2034 | struct lpfc_iocbq * nextiocb; | |
2035 | ||
2036 | nextiocb = lpfc_sli_ringtx_get(phba, pring); | |
2037 | if (!nextiocb) { | |
2038 | nextiocb = *piocb; | |
2039 | *piocb = NULL; | |
2040 | } | |
2041 | ||
2042 | return nextiocb; | |
2043 | } | |
2044 | ||
2045 | int | |
2046 | lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
2047 | struct lpfc_iocbq *piocb, uint32_t flag) | |
2048 | { | |
2049 | struct lpfc_iocbq *nextiocb; | |
2050 | IOCB_t *iocb; | |
2051 | ||
2052 | /* | |
2053 | * We should never get an IOCB if we are in a < LINK_DOWN state | |
2054 | */ | |
2055 | if (unlikely(phba->hba_state < LPFC_LINK_DOWN)) | |
2056 | return IOCB_ERROR; | |
2057 | ||
2058 | /* | |
2059 | * Check to see if we are blocking IOCB processing because of a | |
2060 | * outstanding mbox command. | |
2061 | */ | |
2062 | if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX)) | |
2063 | goto iocb_busy; | |
2064 | ||
2065 | if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) { | |
2066 | /* | |
2067 | * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF | |
2068 | * can be issued if the link is not up. | |
2069 | */ | |
2070 | switch (piocb->iocb.ulpCommand) { | |
2071 | case CMD_QUE_RING_BUF_CN: | |
2072 | case CMD_QUE_RING_BUF64_CN: | |
2073 | case CMD_CLOSE_XRI_CN: | |
2074 | case CMD_ABORT_XRI_CN: | |
2075 | /* | |
2076 | * For IOCBs, like QUE_RING_BUF, that have no rsp ring | |
2077 | * completion, iocb_cmpl MUST be 0. | |
2078 | */ | |
2079 | if (piocb->iocb_cmpl) | |
2080 | piocb->iocb_cmpl = NULL; | |
2081 | /*FALLTHROUGH*/ | |
2082 | case CMD_CREATE_XRI_CR: | |
2083 | break; | |
2084 | default: | |
2085 | goto iocb_busy; | |
2086 | } | |
2087 | ||
2088 | /* | |
2089 | * For FCP commands, we must be in a state where we can process link | |
2090 | * attention events. | |
2091 | */ | |
2092 | } else if (unlikely(pring->ringno == phba->sli.fcp_ring && | |
2093 | !(phba->sli.sli_flag & LPFC_PROCESS_LA))) | |
2094 | goto iocb_busy; | |
2095 | ||
2096 | /* | |
2097 | * Check to see if this is a high priority command. | |
2098 | * If so bypass tx queue processing. | |
2099 | */ | |
2100 | if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) && | |
2101 | (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) { | |
2102 | lpfc_sli_submit_iocb(phba, pring, iocb, piocb); | |
2103 | piocb = NULL; | |
2104 | } | |
2105 | ||
2106 | while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && | |
2107 | (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb))) | |
2108 | lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); | |
2109 | ||
2110 | if (iocb) | |
2111 | lpfc_sli_update_ring(phba, pring); | |
2112 | else | |
2113 | lpfc_sli_update_full_ring(phba, pring); | |
2114 | ||
2115 | if (!piocb) | |
2116 | return IOCB_SUCCESS; | |
2117 | ||
2118 | goto out_busy; | |
2119 | ||
2120 | iocb_busy: | |
2121 | pring->stats.iocb_cmd_delay++; | |
2122 | ||
2123 | out_busy: | |
2124 | ||
2125 | if (!(flag & SLI_IOCB_RET_IOCB)) { | |
2126 | lpfc_sli_ringtx_put(phba, pring, piocb); | |
2127 | return IOCB_SUCCESS; | |
2128 | } | |
2129 | ||
2130 | return IOCB_BUSY; | |
2131 | } | |
2132 | ||
2133 | int | |
2134 | lpfc_sli_setup(struct lpfc_hba *phba) | |
2135 | { | |
2136 | int i, totiocb = 0; | |
2137 | struct lpfc_sli *psli = &phba->sli; | |
2138 | struct lpfc_sli_ring *pring; | |
2139 | ||
2140 | psli->num_rings = MAX_CONFIGURED_RINGS; | |
2141 | psli->sli_flag = 0; | |
2142 | psli->fcp_ring = LPFC_FCP_RING; | |
2143 | psli->next_ring = LPFC_FCP_NEXT_RING; | |
2144 | psli->ip_ring = LPFC_IP_RING; | |
2145 | ||
2146 | for (i = 0; i < psli->num_rings; i++) { | |
2147 | pring = &psli->ring[i]; | |
2148 | switch (i) { | |
2149 | case LPFC_FCP_RING: /* ring 0 - FCP */ | |
2150 | /* numCiocb and numRiocb are used in config_port */ | |
2151 | pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES; | |
2152 | pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES; | |
2153 | pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; | |
2154 | pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; | |
2155 | pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; | |
2156 | pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; | |
2157 | pring->iotag_ctr = 0; | |
2158 | pring->iotag_max = | |
2159 | (phba->cfg_hba_queue_depth * 2); | |
2160 | pring->fast_iotag = pring->iotag_max; | |
2161 | pring->num_mask = 0; | |
2162 | break; | |
2163 | case LPFC_IP_RING: /* ring 1 - IP */ | |
2164 | /* numCiocb and numRiocb are used in config_port */ | |
2165 | pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES; | |
2166 | pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES; | |
2167 | pring->num_mask = 0; | |
2168 | break; | |
2169 | case LPFC_ELS_RING: /* ring 2 - ELS / CT */ | |
2170 | /* numCiocb and numRiocb are used in config_port */ | |
2171 | pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES; | |
2172 | pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES; | |
2173 | pring->fast_iotag = 0; | |
2174 | pring->iotag_ctr = 0; | |
2175 | pring->iotag_max = 4096; | |
2176 | pring->num_mask = 4; | |
2177 | pring->prt[0].profile = 0; /* Mask 0 */ | |
2178 | pring->prt[0].rctl = FC_ELS_REQ; | |
2179 | pring->prt[0].type = FC_ELS_DATA; | |
2180 | pring->prt[0].lpfc_sli_rcv_unsol_event = | |
2181 | lpfc_els_unsol_event; | |
2182 | pring->prt[1].profile = 0; /* Mask 1 */ | |
2183 | pring->prt[1].rctl = FC_ELS_RSP; | |
2184 | pring->prt[1].type = FC_ELS_DATA; | |
2185 | pring->prt[1].lpfc_sli_rcv_unsol_event = | |
2186 | lpfc_els_unsol_event; | |
2187 | pring->prt[2].profile = 0; /* Mask 2 */ | |
2188 | /* NameServer Inquiry */ | |
2189 | pring->prt[2].rctl = FC_UNSOL_CTL; | |
2190 | /* NameServer */ | |
2191 | pring->prt[2].type = FC_COMMON_TRANSPORT_ULP; | |
2192 | pring->prt[2].lpfc_sli_rcv_unsol_event = | |
2193 | lpfc_ct_unsol_event; | |
2194 | pring->prt[3].profile = 0; /* Mask 3 */ | |
2195 | /* NameServer response */ | |
2196 | pring->prt[3].rctl = FC_SOL_CTL; | |
2197 | /* NameServer */ | |
2198 | pring->prt[3].type = FC_COMMON_TRANSPORT_ULP; | |
2199 | pring->prt[3].lpfc_sli_rcv_unsol_event = | |
2200 | lpfc_ct_unsol_event; | |
2201 | break; | |
2202 | } | |
2203 | totiocb += (pring->numCiocb + pring->numRiocb); | |
2204 | } | |
2205 | if (totiocb > MAX_SLI2_IOCB) { | |
2206 | /* Too many cmd / rsp ring entries in SLI2 SLIM */ | |
2207 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
2208 | "%d:0462 Too many cmd / rsp ring entries in " | |
2209 | "SLI2 SLIM Data: x%x x%x\n", | |
2210 | phba->brd_no, totiocb, MAX_SLI2_IOCB); | |
2211 | } | |
2212 | ||
2213 | return 0; | |
2214 | } | |
2215 | ||
2216 | int | |
2217 | lpfc_sli_queue_setup(struct lpfc_hba * phba) | |
2218 | { | |
2219 | struct lpfc_sli *psli; | |
2220 | struct lpfc_sli_ring *pring; | |
2221 | int i, cnt; | |
2222 | ||
2223 | psli = &phba->sli; | |
2224 | spin_lock_irq(phba->host->host_lock); | |
2225 | INIT_LIST_HEAD(&psli->mboxq); | |
2226 | /* Initialize list headers for txq and txcmplq as double linked lists */ | |
2227 | for (i = 0; i < psli->num_rings; i++) { | |
2228 | pring = &psli->ring[i]; | |
2229 | pring->ringno = i; | |
2230 | pring->next_cmdidx = 0; | |
2231 | pring->local_getidx = 0; | |
2232 | pring->cmdidx = 0; | |
2233 | INIT_LIST_HEAD(&pring->txq); | |
2234 | INIT_LIST_HEAD(&pring->txcmplq); | |
2235 | INIT_LIST_HEAD(&pring->iocb_continueq); | |
2236 | INIT_LIST_HEAD(&pring->postbufq); | |
2237 | cnt = pring->fast_iotag; | |
2238 | spin_unlock_irq(phba->host->host_lock); | |
2239 | if (cnt) { | |
2240 | pring->fast_lookup = | |
2241 | kmalloc(cnt * sizeof (struct lpfc_iocbq *), | |
2242 | GFP_KERNEL); | |
2243 | if (pring->fast_lookup == 0) { | |
2244 | return (0); | |
2245 | } | |
2246 | memset((char *)pring->fast_lookup, 0, | |
2247 | cnt * sizeof (struct lpfc_iocbq *)); | |
2248 | } | |
2249 | spin_lock_irq(phba->host->host_lock); | |
2250 | } | |
2251 | spin_unlock_irq(phba->host->host_lock); | |
2252 | return (1); | |
2253 | } | |
2254 | ||
2255 | int | |
2256 | lpfc_sli_hba_down(struct lpfc_hba * phba) | |
2257 | { | |
2258 | struct lpfc_sli *psli; | |
2259 | struct lpfc_sli_ring *pring; | |
2260 | LPFC_MBOXQ_t *pmb; | |
2261 | struct lpfc_iocbq *iocb, *next_iocb; | |
2262 | IOCB_t *icmd = NULL; | |
2263 | int i; | |
2264 | unsigned long flags = 0; | |
2265 | ||
2266 | psli = &phba->sli; | |
2267 | lpfc_hba_down_prep(phba); | |
2268 | ||
2269 | spin_lock_irqsave(phba->host->host_lock, flags); | |
2270 | ||
2271 | for (i = 0; i < psli->num_rings; i++) { | |
2272 | pring = &psli->ring[i]; | |
2273 | pring->flag |= LPFC_DEFERRED_RING_EVENT; | |
2274 | ||
2275 | /* | |
2276 | * Error everything on the txq since these iocbs have not been | |
2277 | * given to the FW yet. | |
2278 | */ | |
2279 | pring->txq_cnt = 0; | |
2280 | ||
2281 | list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { | |
2282 | list_del_init(&iocb->list); | |
2283 | if (iocb->iocb_cmpl) { | |
2284 | icmd = &iocb->iocb; | |
2285 | icmd->ulpStatus = IOSTAT_LOCAL_REJECT; | |
2286 | icmd->un.ulpWord[4] = IOERR_SLI_DOWN; | |
2287 | spin_unlock_irqrestore(phba->host->host_lock, | |
2288 | flags); | |
2289 | (iocb->iocb_cmpl) (phba, iocb, iocb); | |
2290 | spin_lock_irqsave(phba->host->host_lock, flags); | |
2291 | } else { | |
2292 | list_add_tail(&iocb->list, | |
2293 | &phba->lpfc_iocb_list); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | INIT_LIST_HEAD(&(pring->txq)); | |
2298 | ||
2299 | if (pring->fast_lookup) { | |
2300 | kfree(pring->fast_lookup); | |
2301 | pring->fast_lookup = NULL; | |
2302 | } | |
2303 | ||
2304 | } | |
2305 | ||
2306 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
2307 | ||
2308 | /* Return any active mbox cmds */ | |
2309 | del_timer_sync(&psli->mbox_tmo); | |
2310 | spin_lock_irqsave(phba->host->host_lock, flags); | |
2311 | phba->work_hba_events &= ~WORKER_MBOX_TMO; | |
2312 | if (psli->mbox_active) { | |
2313 | pmb = psli->mbox_active; | |
2314 | pmb->mb.mbxStatus = MBX_NOT_FINISHED; | |
2315 | if (pmb->mbox_cmpl) { | |
2316 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
2317 | pmb->mbox_cmpl(phba,pmb); | |
2318 | spin_lock_irqsave(phba->host->host_lock, flags); | |
2319 | } | |
2320 | } | |
2321 | psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; | |
2322 | psli->mbox_active = NULL; | |
2323 | ||
2324 | /* Return any pending mbox cmds */ | |
2325 | while ((pmb = lpfc_mbox_get(phba)) != NULL) { | |
2326 | pmb->mb.mbxStatus = MBX_NOT_FINISHED; | |
2327 | if (pmb->mbox_cmpl) { | |
2328 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
2329 | pmb->mbox_cmpl(phba,pmb); | |
2330 | spin_lock_irqsave(phba->host->host_lock, flags); | |
2331 | } | |
2332 | } | |
2333 | ||
2334 | INIT_LIST_HEAD(&psli->mboxq); | |
2335 | ||
2336 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
2337 | ||
2338 | /* | |
2339 | * Provided the hba is not in an error state, reset it. It is not | |
2340 | * capable of IO anymore. | |
2341 | */ | |
2342 | if (phba->hba_state != LPFC_HBA_ERROR) { | |
2343 | phba->hba_state = LPFC_INIT_START; | |
2344 | lpfc_sli_brdreset(phba, 1); | |
2345 | } | |
2346 | ||
2347 | return 1; | |
2348 | } | |
2349 | ||
2350 | void | |
2351 | lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) | |
2352 | { | |
2353 | uint32_t *src = srcp; | |
2354 | uint32_t *dest = destp; | |
2355 | uint32_t ldata; | |
2356 | int i; | |
2357 | ||
2358 | for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) { | |
2359 | ldata = *src; | |
2360 | ldata = le32_to_cpu(ldata); | |
2361 | *dest = ldata; | |
2362 | src++; | |
2363 | dest++; | |
2364 | } | |
2365 | } | |
2366 | ||
2367 | int | |
2368 | lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring, | |
2369 | struct lpfc_dmabuf * mp) | |
2370 | { | |
2371 | /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up | |
2372 | later */ | |
2373 | list_add_tail(&mp->list, &pring->postbufq); | |
2374 | ||
2375 | pring->postbufq_cnt++; | |
2376 | return 0; | |
2377 | } | |
2378 | ||
2379 | ||
2380 | struct lpfc_dmabuf * | |
2381 | lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
2382 | dma_addr_t phys) | |
2383 | { | |
2384 | struct lpfc_dmabuf *mp, *next_mp; | |
2385 | struct list_head *slp = &pring->postbufq; | |
2386 | ||
2387 | /* Search postbufq, from the begining, looking for a match on phys */ | |
2388 | list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { | |
2389 | if (mp->phys == phys) { | |
2390 | list_del_init(&mp->list); | |
2391 | pring->postbufq_cnt--; | |
2392 | return mp; | |
2393 | } | |
2394 | } | |
2395 | ||
2396 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
2397 | "%d:0410 Cannot find virtual addr for mapped buf on " | |
2398 | "ring %d Data x%llx x%p x%p x%x\n", | |
2399 | phba->brd_no, pring->ringno, (unsigned long long)phys, | |
2400 | slp->next, slp->prev, pring->postbufq_cnt); | |
2401 | return NULL; | |
2402 | } | |
2403 | ||
2404 | static void | |
2405 | lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb, | |
2406 | struct lpfc_iocbq * rspiocb) | |
2407 | { | |
2408 | struct lpfc_dmabuf *buf_ptr, *buf_ptr1; | |
2409 | /* Free the resources associated with the ELS_REQUEST64 IOCB the driver | |
2410 | * just aborted. | |
2411 | * In this case, context2 = cmd, context2->next = rsp, context3 = bpl | |
2412 | */ | |
2413 | if (cmdiocb->context2) { | |
2414 | buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2; | |
2415 | ||
2416 | /* Free the response IOCB before completing the abort | |
2417 | command. */ | |
2418 | buf_ptr = NULL; | |
2419 | list_remove_head((&buf_ptr1->list), buf_ptr, | |
2420 | struct lpfc_dmabuf, list); | |
2421 | if (buf_ptr) { | |
2422 | lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); | |
2423 | kfree(buf_ptr); | |
2424 | } | |
2425 | lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys); | |
2426 | kfree(buf_ptr1); | |
2427 | } | |
2428 | ||
2429 | if (cmdiocb->context3) { | |
2430 | buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3; | |
2431 | lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); | |
2432 | kfree(buf_ptr); | |
2433 | } | |
2434 | ||
2435 | list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list); | |
2436 | return; | |
2437 | } | |
2438 | ||
2439 | int | |
2440 | lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba, | |
2441 | struct lpfc_sli_ring * pring, | |
2442 | struct lpfc_iocbq * cmdiocb) | |
2443 | { | |
2444 | struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; | |
2445 | struct lpfc_iocbq *abtsiocbp = NULL; | |
2446 | IOCB_t *icmd = NULL; | |
2447 | IOCB_t *iabt = NULL; | |
2448 | ||
2449 | /* issue ABTS for this IOCB based on iotag */ | |
2450 | list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list); | |
2451 | if (abtsiocbp == NULL) | |
2452 | return 0; | |
2453 | memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq)); | |
2454 | ||
2455 | iabt = &abtsiocbp->iocb; | |
2456 | icmd = &cmdiocb->iocb; | |
2457 | switch (icmd->ulpCommand) { | |
2458 | case CMD_ELS_REQUEST64_CR: | |
2459 | /* Even though we abort the ELS command, the firmware may access | |
2460 | * the BPL or other resources before it processes our | |
2461 | * ABORT_MXRI64. Thus we must delay reusing the cmdiocb | |
2462 | * resources till the actual abort request completes. | |
2463 | */ | |
2464 | abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand); | |
2465 | abtsiocbp->context2 = cmdiocb->context2; | |
2466 | abtsiocbp->context3 = cmdiocb->context3; | |
2467 | cmdiocb->context2 = NULL; | |
2468 | cmdiocb->context3 = NULL; | |
2469 | abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl; | |
2470 | break; | |
2471 | default: | |
2472 | list_add_tail(&abtsiocbp->list, lpfc_iocb_list); | |
2473 | return 0; | |
2474 | } | |
2475 | ||
2476 | iabt->un.amxri.abortType = ABORT_TYPE_ABTS; | |
2477 | iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32; | |
2478 | ||
2479 | iabt->ulpLe = 1; | |
2480 | iabt->ulpClass = CLASS3; | |
2481 | iabt->ulpCommand = CMD_ABORT_MXRI64_CN; | |
2482 | ||
2483 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) { | |
2484 | list_add_tail(&abtsiocbp->list, lpfc_iocb_list); | |
2485 | return 0; | |
2486 | } | |
2487 | ||
2488 | return 1; | |
2489 | } | |
2490 | ||
2491 | static int | |
2492 | lpfc_sli_validate_iocb_cmd(struct lpfc_scsi_buf *lpfc_cmd, uint16_t tgt_id, | |
2493 | uint64_t lun_id, struct lpfc_iocbq *iocb, | |
2494 | uint32_t ctx, lpfc_ctx_cmd ctx_cmd) | |
2495 | { | |
2496 | int rc = 1; | |
2497 | ||
2498 | if (lpfc_cmd == NULL) | |
2499 | return rc; | |
2500 | ||
2501 | switch (ctx_cmd) { | |
2502 | case LPFC_CTX_LUN: | |
2503 | if ((lpfc_cmd->pCmd->device->id == tgt_id) && | |
2504 | (lpfc_cmd->pCmd->device->lun == lun_id)) | |
2505 | rc = 0; | |
2506 | break; | |
2507 | case LPFC_CTX_TGT: | |
2508 | if (lpfc_cmd->pCmd->device->id == tgt_id) | |
2509 | rc = 0; | |
2510 | break; | |
2511 | case LPFC_CTX_CTX: | |
2512 | if (iocb->iocb.ulpContext == ctx) | |
2513 | rc = 0; | |
2514 | case LPFC_CTX_HOST: | |
2515 | rc = 0; | |
2516 | break; | |
2517 | default: | |
2518 | printk(KERN_ERR "%s: Unknown context cmd type, value %d\n", | |
2519 | __FUNCTION__, ctx_cmd); | |
2520 | break; | |
2521 | } | |
2522 | ||
2523 | return rc; | |
2524 | } | |
2525 | ||
2526 | int | |
2527 | lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
2528 | uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd) | |
2529 | { | |
2530 | struct lpfc_iocbq *iocb, *next_iocb; | |
2531 | IOCB_t *cmd = NULL; | |
2532 | struct lpfc_scsi_buf *lpfc_cmd; | |
2533 | int sum = 0, ret_val = 0; | |
2534 | ||
2535 | /* Next check the txcmplq */ | |
2536 | list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { | |
2537 | cmd = &iocb->iocb; | |
2538 | ||
2539 | /* Must be a FCP command */ | |
2540 | if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) && | |
2541 | (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) && | |
2542 | (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) { | |
2543 | continue; | |
2544 | } | |
2545 | ||
2546 | /* context1 MUST be a struct lpfc_scsi_buf */ | |
2547 | lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1); | |
2548 | ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id, | |
2549 | NULL, 0, ctx_cmd); | |
2550 | if (ret_val != 0) | |
2551 | continue; | |
2552 | sum++; | |
2553 | } | |
2554 | return sum; | |
2555 | } | |
2556 | ||
2557 | int | |
2558 | lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, | |
2559 | uint16_t tgt_id, uint64_t lun_id, uint32_t ctx, | |
2560 | lpfc_ctx_cmd abort_cmd) | |
2561 | { | |
2562 | struct lpfc_iocbq *iocb, *next_iocb; | |
2563 | struct lpfc_iocbq *abtsiocb = NULL; | |
2564 | struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; | |
2565 | IOCB_t *cmd = NULL; | |
2566 | struct lpfc_scsi_buf *lpfc_cmd; | |
2567 | int errcnt = 0, ret_val = 0; | |
2568 | ||
2569 | list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { | |
2570 | cmd = &iocb->iocb; | |
2571 | ||
2572 | /* Must be a FCP command */ | |
2573 | if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) && | |
2574 | (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) && | |
2575 | (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) { | |
2576 | continue; | |
2577 | } | |
2578 | ||
2579 | /* context1 MUST be a struct lpfc_scsi_buf */ | |
2580 | lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1); | |
2581 | ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id, | |
2582 | iocb, ctx, abort_cmd); | |
2583 | if (ret_val != 0) | |
2584 | continue; | |
2585 | ||
2586 | /* issue ABTS for this IOCB based on iotag */ | |
2587 | list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq, | |
2588 | list); | |
2589 | if (abtsiocb == NULL) { | |
2590 | errcnt++; | |
2591 | continue; | |
2592 | } | |
2593 | memset(abtsiocb, 0, sizeof (struct lpfc_iocbq)); | |
2594 | ||
2595 | abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS; | |
2596 | abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext; | |
2597 | abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag; | |
2598 | abtsiocb->iocb.ulpLe = 1; | |
2599 | abtsiocb->iocb.ulpClass = cmd->ulpClass; | |
2600 | ||
2601 | if (phba->hba_state >= LPFC_LINK_UP) | |
2602 | abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN; | |
2603 | else | |
2604 | abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN; | |
2605 | ||
2606 | ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0); | |
2607 | if (ret_val == IOCB_ERROR) { | |
2608 | list_add_tail(&abtsiocb->list, lpfc_iocb_list); | |
2609 | errcnt++; | |
2610 | continue; | |
2611 | } | |
2612 | } | |
2613 | ||
2614 | return errcnt; | |
2615 | } | |
2616 | ||
2617 | void | |
2618 | lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba, | |
2619 | struct lpfc_iocbq * queue1, | |
2620 | struct lpfc_iocbq * queue2) | |
2621 | { | |
2622 | if (queue1->context2 && queue2) | |
2623 | memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq)); | |
2624 | ||
2625 | /* The waiter is looking for LPFC_IO_HIPRI bit to be set | |
2626 | as a signal to wake up */ | |
2627 | queue1->iocb_flag |= LPFC_IO_HIPRI; | |
2628 | return; | |
2629 | } | |
2630 | ||
2631 | int | |
2632 | lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba, | |
2633 | struct lpfc_sli_ring * pring, | |
2634 | struct lpfc_iocbq * piocb, | |
2635 | uint32_t flag, | |
2636 | struct lpfc_iocbq * prspiocbq, | |
2637 | uint32_t timeout) | |
2638 | { | |
2639 | int j, delay_time, retval = IOCB_ERROR; | |
2640 | ||
2641 | /* The caller must left context1 empty. */ | |
2642 | if (piocb->context_un.hipri_wait_queue != 0) { | |
2643 | return IOCB_ERROR; | |
2644 | } | |
2645 | ||
2646 | /* | |
2647 | * If the caller has provided a response iocbq buffer, context2 must | |
2648 | * be NULL or its an error. | |
2649 | */ | |
2650 | if (prspiocbq && piocb->context2) { | |
2651 | return IOCB_ERROR; | |
2652 | } | |
2653 | ||
2654 | piocb->context2 = prspiocbq; | |
2655 | ||
2656 | /* Setup callback routine and issue the command. */ | |
2657 | piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority; | |
2658 | retval = lpfc_sli_issue_iocb(phba, pring, piocb, | |
2659 | flag | SLI_IOCB_HIGH_PRIORITY); | |
2660 | if (retval != IOCB_SUCCESS) { | |
2661 | piocb->context2 = NULL; | |
2662 | return IOCB_ERROR; | |
2663 | } | |
2664 | ||
2665 | /* | |
2666 | * This high-priority iocb was sent out-of-band. Poll for its | |
2667 | * completion rather than wait for a signal. Note that the host_lock | |
2668 | * is held by the midlayer and must be released here to allow the | |
2669 | * interrupt handlers to complete the IO and signal this routine via | |
2670 | * the iocb_flag. | |
2671 | * Also, the delay_time is computed to be one second longer than | |
2672 | * the scsi command timeout to give the FW time to abort on | |
2673 | * timeout rather than the driver just giving up. Typically, | |
2674 | * the midlayer does not specify a time for this command so the | |
2675 | * driver is free to enforce its own timeout. | |
2676 | */ | |
2677 | ||
2678 | delay_time = ((timeout + 1) * 1000) >> 6; | |
2679 | retval = IOCB_ERROR; | |
2680 | spin_unlock_irq(phba->host->host_lock); | |
2681 | for (j = 0; j < 64; j++) { | |
2682 | msleep(delay_time); | |
2683 | if (piocb->iocb_flag & LPFC_IO_HIPRI) { | |
2684 | piocb->iocb_flag &= ~LPFC_IO_HIPRI; | |
2685 | retval = IOCB_SUCCESS; | |
2686 | break; | |
2687 | } | |
2688 | } | |
2689 | ||
2690 | spin_lock_irq(phba->host->host_lock); | |
2691 | piocb->context2 = NULL; | |
2692 | return retval; | |
2693 | } | |
2694 | int | |
2695 | lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq, | |
2696 | uint32_t timeout) | |
2697 | { | |
2698 | DECLARE_WAIT_QUEUE_HEAD(done_q); | |
2699 | DECLARE_WAITQUEUE(wq_entry, current); | |
2700 | uint32_t timeleft = 0; | |
2701 | int retval; | |
2702 | ||
2703 | /* The caller must leave context1 empty. */ | |
2704 | if (pmboxq->context1 != 0) { | |
2705 | return (MBX_NOT_FINISHED); | |
2706 | } | |
2707 | ||
2708 | /* setup wake call as IOCB callback */ | |
2709 | pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait; | |
2710 | /* setup context field to pass wait_queue pointer to wake function */ | |
2711 | pmboxq->context1 = &done_q; | |
2712 | ||
2713 | /* start to sleep before we wait, to avoid races */ | |
2714 | set_current_state(TASK_INTERRUPTIBLE); | |
2715 | add_wait_queue(&done_q, &wq_entry); | |
2716 | ||
2717 | /* now issue the command */ | |
2718 | retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); | |
2719 | ||
2720 | if (retval == MBX_BUSY || retval == MBX_SUCCESS) { | |
2721 | timeleft = schedule_timeout(timeout * HZ); | |
2722 | pmboxq->context1 = NULL; | |
2723 | /* if schedule_timeout returns 0, we timed out and were not | |
2724 | woken up */ | |
2725 | if (timeleft == 0) { | |
2726 | retval = MBX_TIMEOUT; | |
2727 | } else { | |
2728 | retval = MBX_SUCCESS; | |
2729 | } | |
2730 | } | |
2731 | ||
2732 | ||
2733 | set_current_state(TASK_RUNNING); | |
2734 | remove_wait_queue(&done_q, &wq_entry); | |
2735 | return retval; | |
2736 | } | |
2737 | ||
2738 | irqreturn_t | |
2739 | lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs) | |
2740 | { | |
2741 | struct lpfc_hba *phba; | |
2742 | uint32_t ha_copy; | |
2743 | uint32_t work_ha_copy; | |
2744 | unsigned long status; | |
2745 | int i; | |
2746 | uint32_t control; | |
2747 | ||
2748 | /* | |
2749 | * Get the driver's phba structure from the dev_id and | |
2750 | * assume the HBA is not interrupting. | |
2751 | */ | |
2752 | phba = (struct lpfc_hba *) dev_id; | |
2753 | ||
2754 | if (unlikely(!phba)) | |
2755 | return IRQ_NONE; | |
2756 | ||
2757 | phba->sli.slistat.sli_intr++; | |
2758 | ||
2759 | /* | |
2760 | * Call the HBA to see if it is interrupting. If not, don't claim | |
2761 | * the interrupt | |
2762 | */ | |
2763 | ||
2764 | /* Ignore all interrupts during initialization. */ | |
2765 | if (unlikely(phba->hba_state < LPFC_LINK_DOWN)) | |
2766 | return IRQ_NONE; | |
2767 | ||
2768 | /* | |
2769 | * Read host attention register to determine interrupt source | |
2770 | * Clear Attention Sources, except Error Attention (to | |
2771 | * preserve status) and Link Attention | |
2772 | */ | |
2773 | spin_lock(phba->host->host_lock); | |
2774 | ha_copy = readl(phba->HAregaddr); | |
2775 | writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr); | |
2776 | readl(phba->HAregaddr); /* flush */ | |
2777 | spin_unlock(phba->host->host_lock); | |
2778 | ||
2779 | if (unlikely(!ha_copy)) | |
2780 | return IRQ_NONE; | |
2781 | ||
2782 | work_ha_copy = ha_copy & phba->work_ha_mask; | |
2783 | ||
2784 | if (unlikely(work_ha_copy)) { | |
2785 | if (work_ha_copy & HA_LATT) { | |
2786 | if (phba->sli.sli_flag & LPFC_PROCESS_LA) { | |
2787 | /* | |
2788 | * Turn off Link Attention interrupts | |
2789 | * until CLEAR_LA done | |
2790 | */ | |
2791 | spin_lock(phba->host->host_lock); | |
2792 | phba->sli.sli_flag &= ~LPFC_PROCESS_LA; | |
2793 | control = readl(phba->HCregaddr); | |
2794 | control &= ~HC_LAINT_ENA; | |
2795 | writel(control, phba->HCregaddr); | |
2796 | readl(phba->HCregaddr); /* flush */ | |
2797 | spin_unlock(phba->host->host_lock); | |
2798 | } | |
2799 | else | |
2800 | work_ha_copy &= ~HA_LATT; | |
2801 | } | |
2802 | ||
2803 | if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) { | |
2804 | for (i = 0; i < phba->sli.num_rings; i++) { | |
2805 | if (work_ha_copy & (HA_RXATT << (4*i))) { | |
2806 | /* | |
2807 | * Turn off Slow Rings interrupts | |
2808 | */ | |
2809 | spin_lock(phba->host->host_lock); | |
2810 | control = readl(phba->HCregaddr); | |
2811 | control &= ~(HC_R0INT_ENA << i); | |
2812 | writel(control, phba->HCregaddr); | |
2813 | readl(phba->HCregaddr); /* flush */ | |
2814 | spin_unlock(phba->host->host_lock); | |
2815 | } | |
2816 | } | |
2817 | } | |
2818 | ||
2819 | if (work_ha_copy & HA_ERATT) { | |
2820 | phba->hba_state = LPFC_HBA_ERROR; | |
2821 | /* | |
2822 | * There was a link/board error. Read the | |
2823 | * status register to retrieve the error event | |
2824 | * and process it. | |
2825 | */ | |
2826 | phba->sli.slistat.err_attn_event++; | |
2827 | /* Save status info */ | |
2828 | phba->work_hs = readl(phba->HSregaddr); | |
2829 | phba->work_status[0] = readl(phba->MBslimaddr + 0xa8); | |
2830 | phba->work_status[1] = readl(phba->MBslimaddr + 0xac); | |
2831 | ||
2832 | /* Clear Chip error bit */ | |
2833 | writel(HA_ERATT, phba->HAregaddr); | |
2834 | readl(phba->HAregaddr); /* flush */ | |
2835 | ||
2836 | /* | |
2837 | * Reseting the HBA is the only reliable way | |
2838 | * to shutdown interrupt when there is a | |
2839 | * ERROR. | |
2840 | */ | |
2841 | lpfc_sli_send_reset(phba, phba->hba_state); | |
2842 | } | |
2843 | ||
2844 | spin_lock(phba->host->host_lock); | |
2845 | phba->work_ha |= work_ha_copy; | |
2846 | if (phba->work_wait) | |
2847 | wake_up(phba->work_wait); | |
2848 | spin_unlock(phba->host->host_lock); | |
2849 | } | |
2850 | ||
2851 | ha_copy &= ~(phba->work_ha_mask); | |
2852 | ||
2853 | /* | |
2854 | * Process all events on FCP ring. Take the optimized path for | |
2855 | * FCP IO. Any other IO is slow path and is handled by | |
2856 | * the worker thread. | |
2857 | */ | |
2858 | status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); | |
2859 | status >>= (4*LPFC_FCP_RING); | |
2860 | if (status & HA_RXATT) | |
2861 | lpfc_sli_handle_fast_ring_event(phba, | |
2862 | &phba->sli.ring[LPFC_FCP_RING], | |
2863 | status); | |
2864 | return IRQ_HANDLED; | |
2865 | ||
2866 | } /* lpfc_intr_handler */ |