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afaf5a2d DS |
1 | /* |
2 | * QLogic iSCSI HBA Driver | |
3 | * Copyright (c) 2003-2006 QLogic Corporation | |
4 | * | |
5 | * See LICENSE.qla4xxx for copyright and licensing details. | |
6 | */ | |
7 | #include <linux/moduleparam.h> | |
8 | ||
9 | #include <scsi/scsi_tcq.h> | |
10 | #include <scsi/scsicam.h> | |
11 | ||
12 | #include "ql4_def.h" | |
13 | ||
14 | /* | |
15 | * Driver version | |
16 | */ | |
17 | char qla4xxx_version_str[40]; | |
18 | ||
19 | /* | |
20 | * SRB allocation cache | |
21 | */ | |
22 | static kmem_cache_t *srb_cachep; | |
23 | ||
24 | /* | |
25 | * Module parameter information and variables | |
26 | */ | |
27 | int ql4xdiscoverywait = 60; | |
28 | module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR); | |
29 | MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time"); | |
30 | int ql4xdontresethba = 0; | |
31 | module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR); | |
32 | MODULE_PARM_DESC(ql4xdontresethba, | |
33 | "Dont reset the HBA when the driver gets 0x8002 AEN " | |
34 | " default it will reset hba :0" | |
35 | " set to 1 to avoid resetting HBA"); | |
36 | ||
d7a297ba FD |
37 | int qla4_extended_error_logging = 0; /* 0 = off, 1 = log errors */ |
38 | module_param(qla4_extended_error_logging, int, S_IRUGO | S_IRUSR); | |
39 | MODULE_PARM_DESC(qla4_extended_error_logging, | |
afaf5a2d DS |
40 | "Option to enable extended error logging, " |
41 | "Default is 0 - no logging, 1 - debug logging"); | |
42 | ||
43 | /* | |
44 | * SCSI host template entry points | |
45 | */ | |
46 | ||
47 | void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); | |
48 | ||
49 | /* | |
50 | * iSCSI template entry points | |
51 | */ | |
52 | static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no, | |
53 | uint32_t enable, struct sockaddr *dst_addr); | |
54 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
55 | enum iscsi_param param, char *buf); | |
56 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, | |
57 | enum iscsi_param param, char *buf); | |
58 | static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag); | |
59 | static int qla4xxx_conn_start(struct iscsi_cls_conn *conn); | |
60 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); | |
61 | ||
62 | /* | |
63 | * SCSI host template entry points | |
64 | */ | |
65 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
66 | void (*done) (struct scsi_cmnd *)); | |
67 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); | |
68 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); | |
69 | static int qla4xxx_slave_alloc(struct scsi_device *device); | |
70 | static int qla4xxx_slave_configure(struct scsi_device *device); | |
71 | static void qla4xxx_slave_destroy(struct scsi_device *sdev); | |
72 | ||
73 | static struct scsi_host_template qla4xxx_driver_template = { | |
74 | .module = THIS_MODULE, | |
75 | .name = DRIVER_NAME, | |
76 | .proc_name = DRIVER_NAME, | |
77 | .queuecommand = qla4xxx_queuecommand, | |
78 | ||
79 | .eh_device_reset_handler = qla4xxx_eh_device_reset, | |
80 | .eh_host_reset_handler = qla4xxx_eh_host_reset, | |
81 | ||
82 | .slave_configure = qla4xxx_slave_configure, | |
83 | .slave_alloc = qla4xxx_slave_alloc, | |
84 | .slave_destroy = qla4xxx_slave_destroy, | |
85 | ||
86 | .this_id = -1, | |
87 | .cmd_per_lun = 3, | |
88 | .use_clustering = ENABLE_CLUSTERING, | |
89 | .sg_tablesize = SG_ALL, | |
90 | ||
91 | .max_sectors = 0xFFFF, | |
92 | }; | |
93 | ||
94 | static struct iscsi_transport qla4xxx_iscsi_transport = { | |
95 | .owner = THIS_MODULE, | |
96 | .name = DRIVER_NAME, | |
97 | .param_mask = ISCSI_CONN_PORT | | |
98 | ISCSI_CONN_ADDRESS | | |
99 | ISCSI_TARGET_NAME | | |
100 | ISCSI_TPGT, | |
101 | .sessiondata_size = sizeof(struct ddb_entry), | |
102 | .host_template = &qla4xxx_driver_template, | |
103 | ||
104 | .tgt_dscvr = qla4xxx_tgt_dscvr, | |
105 | .get_conn_param = qla4xxx_conn_get_param, | |
106 | .get_session_param = qla4xxx_sess_get_param, | |
107 | .start_conn = qla4xxx_conn_start, | |
108 | .stop_conn = qla4xxx_conn_stop, | |
109 | .session_recovery_timedout = qla4xxx_recovery_timedout, | |
110 | }; | |
111 | ||
112 | static struct scsi_transport_template *qla4xxx_scsi_transport; | |
113 | ||
114 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) | |
115 | { | |
116 | struct ddb_entry *ddb_entry = session->dd_data; | |
117 | struct scsi_qla_host *ha = ddb_entry->ha; | |
118 | ||
119 | DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) " | |
120 | "secs exhausted, marking device DEAD.\n", ha->host_no, | |
121 | __func__, ddb_entry->fw_ddb_index, | |
122 | ha->port_down_retry_count)); | |
123 | ||
124 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); | |
125 | ||
126 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = " | |
127 | "0x%lx\n", ha->host_no, __func__, ha->dpc_flags)); | |
128 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
129 | } | |
130 | ||
131 | static int qla4xxx_conn_start(struct iscsi_cls_conn *conn) | |
132 | { | |
133 | struct iscsi_cls_session *session; | |
134 | struct ddb_entry *ddb_entry; | |
135 | ||
136 | session = iscsi_dev_to_session(conn->dev.parent); | |
137 | ddb_entry = session->dd_data; | |
138 | ||
139 | DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n", | |
140 | ddb_entry->ha->host_no, __func__, | |
141 | ddb_entry->fw_ddb_index)); | |
142 | iscsi_unblock_session(session); | |
143 | return 0; | |
144 | } | |
145 | ||
146 | static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag) | |
147 | { | |
148 | struct iscsi_cls_session *session; | |
149 | struct ddb_entry *ddb_entry; | |
150 | ||
151 | session = iscsi_dev_to_session(conn->dev.parent); | |
152 | ddb_entry = session->dd_data; | |
153 | ||
154 | DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n", | |
155 | ddb_entry->ha->host_no, __func__, | |
156 | ddb_entry->fw_ddb_index)); | |
157 | if (flag == STOP_CONN_RECOVER) | |
158 | iscsi_block_session(session); | |
159 | else | |
160 | printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag); | |
161 | } | |
162 | ||
163 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, | |
164 | enum iscsi_param param, char *buf) | |
165 | { | |
166 | struct ddb_entry *ddb_entry = sess->dd_data; | |
167 | int len; | |
168 | ||
169 | switch (param) { | |
170 | case ISCSI_PARAM_TARGET_NAME: | |
171 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
172 | ddb_entry->iscsi_name); | |
173 | break; | |
174 | case ISCSI_PARAM_TPGT: | |
175 | len = sprintf(buf, "%u\n", ddb_entry->tpgt); | |
176 | break; | |
177 | default: | |
178 | return -ENOSYS; | |
179 | } | |
180 | ||
181 | return len; | |
182 | } | |
183 | ||
184 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
185 | enum iscsi_param param, char *buf) | |
186 | { | |
187 | struct iscsi_cls_session *session; | |
188 | struct ddb_entry *ddb_entry; | |
189 | int len; | |
190 | ||
191 | session = iscsi_dev_to_session(conn->dev.parent); | |
192 | ddb_entry = session->dd_data; | |
193 | ||
194 | switch (param) { | |
195 | case ISCSI_PARAM_CONN_PORT: | |
196 | len = sprintf(buf, "%hu\n", ddb_entry->port); | |
197 | break; | |
198 | case ISCSI_PARAM_CONN_ADDRESS: | |
199 | /* TODO: what are the ipv6 bits */ | |
200 | len = sprintf(buf, "%u.%u.%u.%u\n", | |
201 | NIPQUAD(ddb_entry->ip_addr)); | |
202 | break; | |
203 | default: | |
204 | return -ENOSYS; | |
205 | } | |
206 | ||
207 | return len; | |
208 | } | |
209 | ||
210 | static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no, | |
211 | uint32_t enable, struct sockaddr *dst_addr) | |
212 | { | |
213 | struct scsi_qla_host *ha; | |
214 | struct Scsi_Host *shost; | |
215 | struct sockaddr_in *addr; | |
216 | struct sockaddr_in6 *addr6; | |
217 | int ret = 0; | |
218 | ||
219 | shost = scsi_host_lookup(host_no); | |
220 | if (IS_ERR(shost)) { | |
221 | printk(KERN_ERR "Could not find host no %u\n", host_no); | |
222 | return -ENODEV; | |
223 | } | |
224 | ||
225 | ha = (struct scsi_qla_host *) shost->hostdata; | |
226 | ||
227 | switch (type) { | |
228 | case ISCSI_TGT_DSCVR_SEND_TARGETS: | |
229 | if (dst_addr->sa_family == AF_INET) { | |
230 | addr = (struct sockaddr_in *)dst_addr; | |
231 | if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, | |
232 | addr->sin_port) != QLA_SUCCESS) | |
233 | ret = -EIO; | |
234 | } else if (dst_addr->sa_family == AF_INET6) { | |
235 | /* | |
236 | * TODO: fix qla4xxx_send_tgts | |
237 | */ | |
238 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
239 | if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, | |
240 | addr6->sin6_port) != QLA_SUCCESS) | |
241 | ret = -EIO; | |
242 | } else | |
243 | ret = -ENOSYS; | |
244 | break; | |
245 | default: | |
246 | ret = -ENOSYS; | |
247 | } | |
248 | ||
249 | scsi_host_put(shost); | |
250 | return ret; | |
251 | } | |
252 | ||
253 | void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) | |
254 | { | |
255 | if (!ddb_entry->sess) | |
256 | return; | |
257 | ||
258 | if (ddb_entry->conn) { | |
259 | iscsi_if_destroy_session_done(ddb_entry->conn); | |
260 | iscsi_destroy_conn(ddb_entry->conn); | |
261 | iscsi_remove_session(ddb_entry->sess); | |
262 | } | |
263 | iscsi_free_session(ddb_entry->sess); | |
264 | } | |
265 | ||
266 | int qla4xxx_add_sess(struct ddb_entry *ddb_entry) | |
267 | { | |
268 | int err; | |
269 | ||
270 | err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); | |
271 | if (err) { | |
272 | DEBUG2(printk(KERN_ERR "Could not add session.\n")); | |
273 | return err; | |
274 | } | |
275 | ||
276 | ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0); | |
277 | if (!ddb_entry->conn) { | |
278 | iscsi_remove_session(ddb_entry->sess); | |
279 | DEBUG2(printk(KERN_ERR "Could not add connection.\n")); | |
280 | return -ENOMEM; | |
281 | } | |
282 | ||
283 | ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; | |
284 | iscsi_if_create_session_done(ddb_entry->conn); | |
285 | return 0; | |
286 | } | |
287 | ||
288 | struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) | |
289 | { | |
290 | struct ddb_entry *ddb_entry; | |
291 | struct iscsi_cls_session *sess; | |
292 | ||
293 | sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport); | |
294 | if (!sess) | |
295 | return NULL; | |
296 | ||
297 | ddb_entry = sess->dd_data; | |
298 | memset(ddb_entry, 0, sizeof(*ddb_entry)); | |
299 | ddb_entry->ha = ha; | |
300 | ddb_entry->sess = sess; | |
301 | return ddb_entry; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Timer routines | |
306 | */ | |
307 | ||
308 | static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, | |
309 | unsigned long interval) | |
310 | { | |
311 | DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", | |
312 | __func__, ha->host->host_no)); | |
313 | init_timer(&ha->timer); | |
314 | ha->timer.expires = jiffies + interval * HZ; | |
315 | ha->timer.data = (unsigned long)ha; | |
316 | ha->timer.function = (void (*)(unsigned long))func; | |
317 | add_timer(&ha->timer); | |
318 | ha->timer_active = 1; | |
319 | } | |
320 | ||
321 | static void qla4xxx_stop_timer(struct scsi_qla_host *ha) | |
322 | { | |
323 | del_timer_sync(&ha->timer); | |
324 | ha->timer_active = 0; | |
325 | } | |
326 | ||
327 | /*** | |
328 | * qla4xxx_mark_device_missing - mark a device as missing. | |
329 | * @ha: Pointer to host adapter structure. | |
330 | * @ddb_entry: Pointer to device database entry | |
331 | * | |
332 | * This routine marks a device missing and resets the relogin retry count. | |
333 | **/ | |
334 | void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, | |
335 | struct ddb_entry *ddb_entry) | |
336 | { | |
337 | atomic_set(&ddb_entry->state, DDB_STATE_MISSING); | |
338 | DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n", | |
339 | ha->host_no, ddb_entry->bus, ddb_entry->target, | |
340 | ddb_entry->fw_ddb_index)); | |
341 | iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); | |
342 | } | |
343 | ||
344 | static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, | |
345 | struct ddb_entry *ddb_entry, | |
346 | struct scsi_cmnd *cmd, | |
347 | void (*done)(struct scsi_cmnd *)) | |
348 | { | |
349 | struct srb *srb; | |
350 | ||
351 | srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
352 | if (!srb) | |
353 | return srb; | |
354 | ||
355 | atomic_set(&srb->ref_count, 1); | |
356 | srb->ha = ha; | |
357 | srb->ddb = ddb_entry; | |
358 | srb->cmd = cmd; | |
359 | srb->flags = 0; | |
360 | cmd->SCp.ptr = (void *)srb; | |
361 | cmd->scsi_done = done; | |
362 | ||
363 | return srb; | |
364 | } | |
365 | ||
366 | static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) | |
367 | { | |
368 | struct scsi_cmnd *cmd = srb->cmd; | |
369 | ||
370 | if (srb->flags & SRB_DMA_VALID) { | |
371 | if (cmd->use_sg) { | |
372 | pci_unmap_sg(ha->pdev, cmd->request_buffer, | |
373 | cmd->use_sg, cmd->sc_data_direction); | |
374 | } else if (cmd->request_bufflen) { | |
375 | pci_unmap_single(ha->pdev, srb->dma_handle, | |
376 | cmd->request_bufflen, | |
377 | cmd->sc_data_direction); | |
378 | } | |
379 | srb->flags &= ~SRB_DMA_VALID; | |
380 | } | |
381 | cmd->SCp.ptr = NULL; | |
382 | } | |
383 | ||
384 | void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) | |
385 | { | |
386 | struct scsi_cmnd *cmd = srb->cmd; | |
387 | ||
388 | qla4xxx_srb_free_dma(ha, srb); | |
389 | ||
390 | mempool_free(srb, ha->srb_mempool); | |
391 | ||
392 | cmd->scsi_done(cmd); | |
393 | } | |
394 | ||
395 | /** | |
396 | * qla4xxx_queuecommand - scsi layer issues scsi command to driver. | |
397 | * @cmd: Pointer to Linux's SCSI command structure | |
398 | * @done_fn: Function that the driver calls to notify the SCSI mid-layer | |
399 | * that the command has been processed. | |
400 | * | |
401 | * Remarks: | |
402 | * This routine is invoked by Linux to send a SCSI command to the driver. | |
403 | * The mid-level driver tries to ensure that queuecommand never gets | |
404 | * invoked concurrently with itself or the interrupt handler (although | |
405 | * the interrupt handler may call this routine as part of request- | |
406 | * completion handling). Unfortunely, it sometimes calls the scheduler | |
407 | * in interrupt context which is a big NO! NO!. | |
408 | **/ | |
409 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
410 | void (*done)(struct scsi_cmnd *)) | |
411 | { | |
412 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
413 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
414 | struct srb *srb; | |
415 | int rval; | |
416 | ||
417 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
418 | if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { | |
419 | cmd->result = DID_NO_CONNECT << 16; | |
420 | goto qc_fail_command; | |
421 | } | |
422 | goto qc_host_busy; | |
423 | } | |
424 | ||
425 | spin_unlock_irq(ha->host->host_lock); | |
426 | ||
427 | srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); | |
428 | if (!srb) | |
429 | goto qc_host_busy_lock; | |
430 | ||
431 | rval = qla4xxx_send_command_to_isp(ha, srb); | |
432 | if (rval != QLA_SUCCESS) | |
433 | goto qc_host_busy_free_sp; | |
434 | ||
435 | spin_lock_irq(ha->host->host_lock); | |
436 | return 0; | |
437 | ||
438 | qc_host_busy_free_sp: | |
439 | qla4xxx_srb_free_dma(ha, srb); | |
440 | mempool_free(srb, ha->srb_mempool); | |
441 | ||
442 | qc_host_busy_lock: | |
443 | spin_lock_irq(ha->host->host_lock); | |
444 | ||
445 | qc_host_busy: | |
446 | return SCSI_MLQUEUE_HOST_BUSY; | |
447 | ||
448 | qc_fail_command: | |
449 | done(cmd); | |
450 | ||
451 | return 0; | |
452 | } | |
453 | ||
454 | /** | |
455 | * qla4xxx_mem_free - frees memory allocated to adapter | |
456 | * @ha: Pointer to host adapter structure. | |
457 | * | |
458 | * Frees memory previously allocated by qla4xxx_mem_alloc | |
459 | **/ | |
460 | static void qla4xxx_mem_free(struct scsi_qla_host *ha) | |
461 | { | |
462 | if (ha->queues) | |
463 | dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, | |
464 | ha->queues_dma); | |
465 | ||
466 | ha->queues_len = 0; | |
467 | ha->queues = NULL; | |
468 | ha->queues_dma = 0; | |
469 | ha->request_ring = NULL; | |
470 | ha->request_dma = 0; | |
471 | ha->response_ring = NULL; | |
472 | ha->response_dma = 0; | |
473 | ha->shadow_regs = NULL; | |
474 | ha->shadow_regs_dma = 0; | |
475 | ||
476 | /* Free srb pool. */ | |
477 | if (ha->srb_mempool) | |
478 | mempool_destroy(ha->srb_mempool); | |
479 | ||
480 | ha->srb_mempool = NULL; | |
481 | ||
482 | /* release io space registers */ | |
483 | if (ha->reg) | |
484 | iounmap(ha->reg); | |
485 | pci_release_regions(ha->pdev); | |
486 | } | |
487 | ||
488 | /** | |
489 | * qla4xxx_mem_alloc - allocates memory for use by adapter. | |
490 | * @ha: Pointer to host adapter structure | |
491 | * | |
492 | * Allocates DMA memory for request and response queues. Also allocates memory | |
493 | * for srbs. | |
494 | **/ | |
495 | static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) | |
496 | { | |
497 | unsigned long align; | |
498 | ||
499 | /* Allocate contiguous block of DMA memory for queues. */ | |
500 | ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
501 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + | |
502 | sizeof(struct shadow_regs) + | |
503 | MEM_ALIGN_VALUE + | |
504 | (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); | |
505 | ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, | |
506 | &ha->queues_dma, GFP_KERNEL); | |
507 | if (ha->queues == NULL) { | |
508 | dev_warn(&ha->pdev->dev, | |
509 | "Memory Allocation failed - queues.\n"); | |
510 | ||
511 | goto mem_alloc_error_exit; | |
512 | } | |
513 | memset(ha->queues, 0, ha->queues_len); | |
514 | ||
515 | /* | |
516 | * As per RISC alignment requirements -- the bus-address must be a | |
517 | * multiple of the request-ring size (in bytes). | |
518 | */ | |
519 | align = 0; | |
520 | if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) | |
521 | align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & | |
522 | (MEM_ALIGN_VALUE - 1)); | |
523 | ||
524 | /* Update request and response queue pointers. */ | |
525 | ha->request_dma = ha->queues_dma + align; | |
526 | ha->request_ring = (struct queue_entry *) (ha->queues + align); | |
527 | ha->response_dma = ha->queues_dma + align + | |
528 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); | |
529 | ha->response_ring = (struct queue_entry *) (ha->queues + align + | |
530 | (REQUEST_QUEUE_DEPTH * | |
531 | QUEUE_SIZE)); | |
532 | ha->shadow_regs_dma = ha->queues_dma + align + | |
533 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
534 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); | |
535 | ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + | |
536 | (REQUEST_QUEUE_DEPTH * | |
537 | QUEUE_SIZE) + | |
538 | (RESPONSE_QUEUE_DEPTH * | |
539 | QUEUE_SIZE)); | |
540 | ||
541 | /* Allocate memory for srb pool. */ | |
542 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
543 | mempool_free_slab, srb_cachep); | |
544 | if (ha->srb_mempool == NULL) { | |
545 | dev_warn(&ha->pdev->dev, | |
546 | "Memory Allocation failed - SRB Pool.\n"); | |
547 | ||
548 | goto mem_alloc_error_exit; | |
549 | } | |
550 | ||
551 | return QLA_SUCCESS; | |
552 | ||
553 | mem_alloc_error_exit: | |
554 | qla4xxx_mem_free(ha); | |
555 | return QLA_ERROR; | |
556 | } | |
557 | ||
558 | /** | |
559 | * qla4xxx_timer - checks every second for work to do. | |
560 | * @ha: Pointer to host adapter structure. | |
561 | **/ | |
562 | static void qla4xxx_timer(struct scsi_qla_host *ha) | |
563 | { | |
564 | struct ddb_entry *ddb_entry, *dtemp; | |
565 | int start_dpc = 0; | |
566 | ||
567 | /* Search for relogin's to time-out and port down retry. */ | |
568 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
569 | /* Count down time between sending relogins */ | |
570 | if (adapter_up(ha) && | |
571 | !test_bit(DF_RELOGIN, &ddb_entry->flags) && | |
572 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
573 | if (atomic_read(&ddb_entry->retry_relogin_timer) != | |
574 | INVALID_ENTRY) { | |
575 | if (atomic_read(&ddb_entry->retry_relogin_timer) | |
576 | == 0) { | |
577 | atomic_set(&ddb_entry-> | |
578 | retry_relogin_timer, | |
579 | INVALID_ENTRY); | |
580 | set_bit(DPC_RELOGIN_DEVICE, | |
581 | &ha->dpc_flags); | |
582 | set_bit(DF_RELOGIN, &ddb_entry->flags); | |
583 | DEBUG2(printk("scsi%ld: %s: index [%d]" | |
584 | " login device\n", | |
585 | ha->host_no, __func__, | |
586 | ddb_entry->fw_ddb_index)); | |
587 | } else | |
588 | atomic_dec(&ddb_entry-> | |
589 | retry_relogin_timer); | |
590 | } | |
591 | } | |
592 | ||
593 | /* Wait for relogin to timeout */ | |
594 | if (atomic_read(&ddb_entry->relogin_timer) && | |
595 | (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { | |
596 | /* | |
597 | * If the relogin times out and the device is | |
598 | * still NOT ONLINE then try and relogin again. | |
599 | */ | |
600 | if (atomic_read(&ddb_entry->state) != | |
601 | DDB_STATE_ONLINE && | |
602 | ddb_entry->fw_ddb_device_state == | |
603 | DDB_DS_SESSION_FAILED) { | |
604 | /* Reset retry relogin timer */ | |
605 | atomic_inc(&ddb_entry->relogin_retry_count); | |
606 | DEBUG2(printk("scsi%ld: index[%d] relogin" | |
607 | " timed out-retrying" | |
608 | " relogin (%d)\n", | |
609 | ha->host_no, | |
610 | ddb_entry->fw_ddb_index, | |
611 | atomic_read(&ddb_entry-> | |
612 | relogin_retry_count)) | |
613 | ); | |
614 | start_dpc++; | |
615 | DEBUG(printk("scsi%ld:%d:%d: index [%d] " | |
616 | "initate relogin after" | |
617 | " %d seconds\n", | |
618 | ha->host_no, ddb_entry->bus, | |
619 | ddb_entry->target, | |
620 | ddb_entry->fw_ddb_index, | |
621 | ddb_entry->default_time2wait + 4) | |
622 | ); | |
623 | ||
624 | atomic_set(&ddb_entry->retry_relogin_timer, | |
625 | ddb_entry->default_time2wait + 4); | |
626 | } | |
627 | } | |
628 | } | |
629 | ||
630 | /* Check for heartbeat interval. */ | |
631 | if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && | |
632 | ha->heartbeat_interval != 0) { | |
633 | ha->seconds_since_last_heartbeat++; | |
634 | if (ha->seconds_since_last_heartbeat > | |
635 | ha->heartbeat_interval + 2) | |
636 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
637 | } | |
638 | ||
639 | ||
640 | /* Wakeup the dpc routine for this adapter, if needed. */ | |
641 | if ((start_dpc || | |
642 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
643 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || | |
644 | test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || | |
645 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || | |
646 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
647 | test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || | |
648 | test_bit(DPC_AEN, &ha->dpc_flags)) && | |
649 | ha->dpc_thread) { | |
650 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" | |
651 | " - dpc flags = 0x%lx\n", | |
652 | ha->host_no, __func__, ha->dpc_flags)); | |
653 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
654 | } | |
655 | ||
656 | /* Reschedule timer thread to call us back in one second */ | |
657 | mod_timer(&ha->timer, jiffies + HZ); | |
658 | ||
659 | DEBUG2(ha->seconds_since_last_intr++); | |
660 | } | |
661 | ||
662 | /** | |
663 | * qla4xxx_cmd_wait - waits for all outstanding commands to complete | |
664 | * @ha: Pointer to host adapter structure. | |
665 | * | |
666 | * This routine stalls the driver until all outstanding commands are returned. | |
667 | * Caller must release the Hardware Lock prior to calling this routine. | |
668 | **/ | |
669 | static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) | |
670 | { | |
671 | uint32_t index = 0; | |
672 | int stat = QLA_SUCCESS; | |
673 | unsigned long flags; | |
674 | struct scsi_cmnd *cmd; | |
675 | int wait_cnt = WAIT_CMD_TOV; /* | |
676 | * Initialized for 30 seconds as we | |
677 | * expect all commands to retuned | |
678 | * ASAP. | |
679 | */ | |
680 | ||
681 | while (wait_cnt) { | |
682 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
683 | /* Find a command that hasn't completed. */ | |
684 | for (index = 0; index < ha->host->can_queue; index++) { | |
685 | cmd = scsi_host_find_tag(ha->host, index); | |
686 | if (cmd != NULL) | |
687 | break; | |
688 | } | |
689 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
690 | ||
691 | /* If No Commands are pending, wait is complete */ | |
692 | if (index == ha->host->can_queue) { | |
693 | break; | |
694 | } | |
695 | ||
696 | /* If we timed out on waiting for commands to come back | |
697 | * return ERROR. | |
698 | */ | |
699 | wait_cnt--; | |
700 | if (wait_cnt == 0) | |
701 | stat = QLA_ERROR; | |
702 | else { | |
703 | msleep(1000); | |
704 | } | |
705 | } /* End of While (wait_cnt) */ | |
706 | ||
707 | return stat; | |
708 | } | |
709 | ||
710 | /** | |
711 | * qla4010_soft_reset - performs soft reset. | |
712 | * @ha: Pointer to host adapter structure. | |
713 | **/ | |
714 | static int qla4010_soft_reset(struct scsi_qla_host *ha) | |
715 | { | |
716 | uint32_t max_wait_time; | |
717 | unsigned long flags = 0; | |
718 | int status = QLA_ERROR; | |
719 | uint32_t ctrl_status; | |
720 | ||
721 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
722 | ||
723 | /* | |
724 | * If the SCSI Reset Interrupt bit is set, clear it. | |
725 | * Otherwise, the Soft Reset won't work. | |
726 | */ | |
727 | ctrl_status = readw(&ha->reg->ctrl_status); | |
728 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) | |
729 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
730 | ||
731 | /* Issue Soft Reset */ | |
732 | writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); | |
733 | readl(&ha->reg->ctrl_status); | |
734 | ||
735 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
736 | ||
737 | /* Wait until the Network Reset Intr bit is cleared */ | |
738 | max_wait_time = RESET_INTR_TOV; | |
739 | do { | |
740 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
741 | ctrl_status = readw(&ha->reg->ctrl_status); | |
742 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
743 | ||
744 | if ((ctrl_status & CSR_NET_RESET_INTR) == 0) | |
745 | break; | |
746 | ||
747 | msleep(1000); | |
748 | } while ((--max_wait_time)); | |
749 | ||
750 | if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { | |
751 | DEBUG2(printk(KERN_WARNING | |
752 | "scsi%ld: Network Reset Intr not cleared by " | |
753 | "Network function, clearing it now!\n", | |
754 | ha->host_no)); | |
755 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
756 | writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); | |
757 | readl(&ha->reg->ctrl_status); | |
758 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
759 | } | |
760 | ||
761 | /* Wait until the firmware tells us the Soft Reset is done */ | |
762 | max_wait_time = SOFT_RESET_TOV; | |
763 | do { | |
764 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
765 | ctrl_status = readw(&ha->reg->ctrl_status); | |
766 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
767 | ||
768 | if ((ctrl_status & CSR_SOFT_RESET) == 0) { | |
769 | status = QLA_SUCCESS; | |
770 | break; | |
771 | } | |
772 | ||
773 | msleep(1000); | |
774 | } while ((--max_wait_time)); | |
775 | ||
776 | /* | |
777 | * Also, make sure that the SCSI Reset Interrupt bit has been cleared | |
778 | * after the soft reset has taken place. | |
779 | */ | |
780 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
781 | ctrl_status = readw(&ha->reg->ctrl_status); | |
782 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { | |
783 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
784 | readl(&ha->reg->ctrl_status); | |
785 | } | |
786 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
787 | ||
788 | /* If soft reset fails then most probably the bios on other | |
789 | * function is also enabled. | |
790 | * Since the initialization is sequential the other fn | |
791 | * wont be able to acknowledge the soft reset. | |
792 | * Issue a force soft reset to workaround this scenario. | |
793 | */ | |
794 | if (max_wait_time == 0) { | |
795 | /* Issue Force Soft Reset */ | |
796 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
797 | writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); | |
798 | readl(&ha->reg->ctrl_status); | |
799 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
800 | /* Wait until the firmware tells us the Soft Reset is done */ | |
801 | max_wait_time = SOFT_RESET_TOV; | |
802 | do { | |
803 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
804 | ctrl_status = readw(&ha->reg->ctrl_status); | |
805 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
806 | ||
807 | if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { | |
808 | status = QLA_SUCCESS; | |
809 | break; | |
810 | } | |
811 | ||
812 | msleep(1000); | |
813 | } while ((--max_wait_time)); | |
814 | } | |
815 | ||
816 | return status; | |
817 | } | |
818 | ||
819 | /** | |
820 | * qla4xxx_topcat_reset - performs hard reset of TopCat Chip. | |
821 | * @ha: Pointer to host adapter structure. | |
822 | **/ | |
823 | static int qla4xxx_topcat_reset(struct scsi_qla_host *ha) | |
824 | { | |
825 | unsigned long flags; | |
826 | ||
827 | ql4xxx_lock_nvram(ha); | |
828 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
829 | writel(set_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha)); | |
830 | readl(isp_gp_out(ha)); | |
831 | mdelay(1); | |
832 | ||
833 | writel(clr_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha)); | |
834 | readl(isp_gp_out(ha)); | |
835 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
836 | mdelay(2523); | |
837 | ||
838 | ql4xxx_unlock_nvram(ha); | |
839 | return QLA_SUCCESS; | |
840 | } | |
841 | ||
842 | /** | |
843 | * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S. | |
844 | * @ha: Pointer to host adapter structure. | |
845 | * | |
846 | * This routine is called just prior to a HARD RESET to return all | |
847 | * outstanding commands back to the Operating System. | |
848 | * Caller should make sure that the following locks are released | |
849 | * before this calling routine: Hardware lock, and io_request_lock. | |
850 | **/ | |
851 | static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) | |
852 | { | |
853 | struct srb *srb; | |
854 | int i; | |
855 | unsigned long flags; | |
856 | ||
857 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
858 | for (i = 0; i < ha->host->can_queue; i++) { | |
859 | srb = qla4xxx_del_from_active_array(ha, i); | |
860 | if (srb != NULL) { | |
861 | srb->cmd->result = DID_RESET << 16; | |
862 | qla4xxx_srb_compl(ha, srb); | |
863 | } | |
864 | } | |
865 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
866 | ||
867 | } | |
868 | ||
869 | /** | |
870 | * qla4xxx_hard_reset - performs HBA Hard Reset | |
871 | * @ha: Pointer to host adapter structure. | |
872 | **/ | |
873 | static int qla4xxx_hard_reset(struct scsi_qla_host *ha) | |
874 | { | |
875 | /* The QLA4010 really doesn't have an equivalent to a hard reset */ | |
876 | qla4xxx_flush_active_srbs(ha); | |
877 | if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) { | |
878 | int status = QLA_ERROR; | |
879 | ||
880 | if ((qla4010_soft_reset(ha) == QLA_SUCCESS) && | |
881 | (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) && | |
882 | (qla4010_soft_reset(ha) == QLA_SUCCESS)) | |
883 | status = QLA_SUCCESS; | |
884 | return status; | |
885 | } else | |
886 | return qla4010_soft_reset(ha); | |
887 | } | |
888 | ||
889 | /** | |
890 | * qla4xxx_recover_adapter - recovers adapter after a fatal error | |
891 | * @ha: Pointer to host adapter structure. | |
892 | * @renew_ddb_list: Indicates what to do with the adapter's ddb list | |
893 | * after adapter recovery has completed. | |
894 | * 0=preserve ddb list, 1=destroy and rebuild ddb list | |
895 | **/ | |
896 | static int qla4xxx_recover_adapter(struct scsi_qla_host *ha, | |
897 | uint8_t renew_ddb_list) | |
898 | { | |
899 | int status; | |
900 | ||
901 | /* Stall incoming I/O until we are done */ | |
902 | clear_bit(AF_ONLINE, &ha->flags); | |
903 | DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no, | |
904 | __func__)); | |
905 | ||
906 | /* Wait for outstanding commands to complete. | |
907 | * Stalls the driver for max 30 secs | |
908 | */ | |
909 | status = qla4xxx_cmd_wait(ha); | |
910 | ||
911 | qla4xxx_disable_intrs(ha); | |
912 | ||
913 | /* Flush any pending ddb changed AENs */ | |
914 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
915 | ||
916 | /* Reset the firmware. If successful, function | |
917 | * returns with ISP interrupts enabled. | |
918 | */ | |
919 | if (status == QLA_SUCCESS) { | |
920 | DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n", | |
921 | ha->host_no, __func__)); | |
922 | status = qla4xxx_soft_reset(ha); | |
923 | } | |
924 | /* FIXMEkaren: Do we want to keep interrupts enabled and process | |
925 | AENs after soft reset */ | |
926 | ||
927 | /* If firmware (SOFT) reset failed, or if all outstanding | |
928 | * commands have not returned, then do a HARD reset. | |
929 | */ | |
930 | if (status == QLA_ERROR) { | |
931 | DEBUG2(printk("scsi%ld: %s - Performing hard reset..\n", | |
932 | ha->host_no, __func__)); | |
933 | status = qla4xxx_hard_reset(ha); | |
934 | } | |
935 | ||
936 | /* Flush any pending ddb changed AENs */ | |
937 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
938 | ||
939 | /* Re-initialize firmware. If successful, function returns | |
940 | * with ISP interrupts enabled */ | |
941 | if (status == QLA_SUCCESS) { | |
942 | DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n", | |
943 | ha->host_no, __func__)); | |
944 | ||
945 | /* If successful, AF_ONLINE flag set in | |
946 | * qla4xxx_initialize_adapter */ | |
947 | status = qla4xxx_initialize_adapter(ha, renew_ddb_list); | |
948 | } | |
949 | ||
950 | /* Failed adapter initialization? | |
951 | * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */ | |
952 | if ((test_bit(AF_ONLINE, &ha->flags) == 0) && | |
953 | (test_bit(DPC_RESET_HA, &ha->dpc_flags))) { | |
954 | /* Adapter initialization failed, see if we can retry | |
955 | * resetting the ha */ | |
956 | if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { | |
957 | ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; | |
958 | DEBUG2(printk("scsi%ld: recover adapter - retrying " | |
959 | "(%d) more times\n", ha->host_no, | |
960 | ha->retry_reset_ha_cnt)); | |
961 | set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
962 | status = QLA_ERROR; | |
963 | } else { | |
964 | if (ha->retry_reset_ha_cnt > 0) { | |
965 | /* Schedule another Reset HA--DPC will retry */ | |
966 | ha->retry_reset_ha_cnt--; | |
967 | DEBUG2(printk("scsi%ld: recover adapter - " | |
968 | "retry remaining %d\n", | |
969 | ha->host_no, | |
970 | ha->retry_reset_ha_cnt)); | |
971 | status = QLA_ERROR; | |
972 | } | |
973 | ||
974 | if (ha->retry_reset_ha_cnt == 0) { | |
975 | /* Recover adapter retries have been exhausted. | |
976 | * Adapter DEAD */ | |
977 | DEBUG2(printk("scsi%ld: recover adapter " | |
978 | "failed - board disabled\n", | |
979 | ha->host_no)); | |
980 | qla4xxx_flush_active_srbs(ha); | |
981 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
982 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
983 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, | |
984 | &ha->dpc_flags); | |
985 | status = QLA_ERROR; | |
986 | } | |
987 | } | |
988 | } else { | |
989 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
990 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags); | |
991 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
992 | } | |
993 | ||
994 | ha->adapter_error_count++; | |
995 | ||
996 | if (status == QLA_SUCCESS) | |
997 | qla4xxx_enable_intrs(ha); | |
998 | ||
999 | DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no)); | |
1000 | return status; | |
1001 | } | |
1002 | ||
1003 | /** | |
1004 | * qla4xxx_do_dpc - dpc routine | |
1005 | * @data: in our case pointer to adapter structure | |
1006 | * | |
1007 | * This routine is a task that is schedule by the interrupt handler | |
1008 | * to perform the background processing for interrupts. We put it | |
1009 | * on a task queue that is consumed whenever the scheduler runs; that's | |
1010 | * so you can do anything (i.e. put the process to sleep etc). In fact, | |
1011 | * the mid-level tries to sleep when it reaches the driver threshold | |
1012 | * "host->can_queue". This can cause a panic if we were in our interrupt code. | |
1013 | **/ | |
1014 | static void qla4xxx_do_dpc(void *data) | |
1015 | { | |
1016 | struct scsi_qla_host *ha = (struct scsi_qla_host *) data; | |
1017 | struct ddb_entry *ddb_entry, *dtemp; | |
1018 | ||
1019 | DEBUG2(printk("scsi%ld: %s: DPC handler waking up.\n", | |
1020 | ha->host_no, __func__)); | |
1021 | ||
1022 | DEBUG2(printk("scsi%ld: %s: ha->flags = 0x%08lx\n", | |
1023 | ha->host_no, __func__, ha->flags)); | |
1024 | DEBUG2(printk("scsi%ld: %s: ha->dpc_flags = 0x%08lx\n", | |
1025 | ha->host_no, __func__, ha->dpc_flags)); | |
1026 | ||
1027 | /* Initialization not yet finished. Don't do anything yet. */ | |
1028 | if (!test_bit(AF_INIT_DONE, &ha->flags)) | |
1029 | return; | |
1030 | ||
1031 | if (adapter_up(ha) || | |
1032 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
1033 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
1034 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) { | |
1035 | if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) | |
1036 | /* | |
1037 | * dg 09/23 Never initialize ddb list | |
1038 | * once we up and running | |
1039 | * qla4xxx_recover_adapter(ha, | |
1040 | * REBUILD_DDB_LIST); | |
1041 | */ | |
1042 | qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); | |
1043 | ||
1044 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) | |
1045 | qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); | |
1046 | ||
1047 | if (test_and_clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { | |
1048 | uint8_t wait_time = RESET_INTR_TOV; | |
1049 | unsigned long flags = 0; | |
1050 | ||
1051 | qla4xxx_flush_active_srbs(ha); | |
1052 | ||
1053 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1054 | while ((readw(&ha->reg->ctrl_status) & | |
1055 | (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { | |
1056 | if (--wait_time == 0) | |
1057 | break; | |
1058 | ||
1059 | spin_unlock_irqrestore(&ha->hardware_lock, | |
1060 | flags); | |
1061 | ||
1062 | msleep(1000); | |
1063 | ||
1064 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1065 | } | |
1066 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1067 | ||
1068 | if (wait_time == 0) | |
1069 | DEBUG2(printk("scsi%ld: %s: SR|FSR " | |
1070 | "bit not cleared-- resetting\n", | |
1071 | ha->host_no, __func__)); | |
1072 | } | |
1073 | } | |
1074 | ||
1075 | /* ---- process AEN? --- */ | |
1076 | if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) | |
1077 | qla4xxx_process_aen(ha, PROCESS_ALL_AENS); | |
1078 | ||
1079 | /* ---- Get DHCP IP Address? --- */ | |
1080 | if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) | |
1081 | qla4xxx_get_dhcp_ip_address(ha); | |
1082 | ||
1083 | /* ---- relogin device? --- */ | |
1084 | if (adapter_up(ha) && | |
1085 | test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { | |
1086 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1087 | &ha->ddb_list, list) { | |
1088 | if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && | |
1089 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
1090 | qla4xxx_relogin_device(ha, ddb_entry); | |
1091 | ||
1092 | /* | |
1093 | * If mbx cmd times out there is no point | |
1094 | * in continuing further. | |
1095 | * With large no of targets this can hang | |
1096 | * the system. | |
1097 | */ | |
1098 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
1099 | printk(KERN_WARNING "scsi%ld: %s: " | |
1100 | "need to reset hba\n", | |
1101 | ha->host_no, __func__); | |
1102 | break; | |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | /** | |
1109 | * qla4xxx_free_adapter - release the adapter | |
1110 | * @ha: pointer to adapter structure | |
1111 | **/ | |
1112 | static void qla4xxx_free_adapter(struct scsi_qla_host *ha) | |
1113 | { | |
1114 | ||
1115 | if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { | |
1116 | /* Turn-off interrupts on the card. */ | |
1117 | qla4xxx_disable_intrs(ha); | |
1118 | } | |
1119 | ||
1120 | /* Kill the kernel thread for this host */ | |
1121 | if (ha->dpc_thread) | |
1122 | destroy_workqueue(ha->dpc_thread); | |
1123 | ||
1124 | /* Issue Soft Reset to put firmware in unknown state */ | |
1125 | qla4xxx_soft_reset(ha); | |
1126 | ||
1127 | /* Remove timer thread, if present */ | |
1128 | if (ha->timer_active) | |
1129 | qla4xxx_stop_timer(ha); | |
1130 | ||
1131 | /* free extra memory */ | |
1132 | qla4xxx_mem_free(ha); | |
1133 | ||
1134 | /* Detach interrupts */ | |
1135 | if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) | |
1136 | free_irq(ha->pdev->irq, ha); | |
1137 | ||
1138 | pci_disable_device(ha->pdev); | |
1139 | ||
1140 | } | |
1141 | ||
1142 | /*** | |
1143 | * qla4xxx_iospace_config - maps registers | |
1144 | * @ha: pointer to adapter structure | |
1145 | * | |
1146 | * This routines maps HBA's registers from the pci address space | |
1147 | * into the kernel virtual address space for memory mapped i/o. | |
1148 | **/ | |
1149 | static int qla4xxx_iospace_config(struct scsi_qla_host *ha) | |
1150 | { | |
1151 | unsigned long pio, pio_len, pio_flags; | |
1152 | unsigned long mmio, mmio_len, mmio_flags; | |
1153 | ||
1154 | pio = pci_resource_start(ha->pdev, 0); | |
1155 | pio_len = pci_resource_len(ha->pdev, 0); | |
1156 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1157 | if (pio_flags & IORESOURCE_IO) { | |
1158 | if (pio_len < MIN_IOBASE_LEN) { | |
1159 | dev_warn(&ha->pdev->dev, | |
1160 | "Invalid PCI I/O region size\n"); | |
1161 | pio = 0; | |
1162 | } | |
1163 | } else { | |
1164 | dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n"); | |
1165 | pio = 0; | |
1166 | } | |
1167 | ||
1168 | /* Use MMIO operations for all accesses. */ | |
1169 | mmio = pci_resource_start(ha->pdev, 1); | |
1170 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1171 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1172 | ||
1173 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
1174 | dev_err(&ha->pdev->dev, | |
1175 | "region #0 not an MMIO resource, aborting\n"); | |
1176 | ||
1177 | goto iospace_error_exit; | |
1178 | } | |
1179 | if (mmio_len < MIN_IOBASE_LEN) { | |
1180 | dev_err(&ha->pdev->dev, | |
1181 | "Invalid PCI mem region size, aborting\n"); | |
1182 | goto iospace_error_exit; | |
1183 | } | |
1184 | ||
1185 | if (pci_request_regions(ha->pdev, DRIVER_NAME)) { | |
1186 | dev_warn(&ha->pdev->dev, | |
1187 | "Failed to reserve PIO/MMIO regions\n"); | |
1188 | ||
1189 | goto iospace_error_exit; | |
1190 | } | |
1191 | ||
1192 | ha->pio_address = pio; | |
1193 | ha->pio_length = pio_len; | |
1194 | ha->reg = ioremap(mmio, MIN_IOBASE_LEN); | |
1195 | if (!ha->reg) { | |
1196 | dev_err(&ha->pdev->dev, | |
1197 | "cannot remap MMIO, aborting\n"); | |
1198 | ||
1199 | goto iospace_error_exit; | |
1200 | } | |
1201 | ||
1202 | return 0; | |
1203 | ||
1204 | iospace_error_exit: | |
1205 | return -ENOMEM; | |
1206 | } | |
1207 | ||
1208 | /** | |
1209 | * qla4xxx_probe_adapter - callback function to probe HBA | |
1210 | * @pdev: pointer to pci_dev structure | |
1211 | * @pci_device_id: pointer to pci_device entry | |
1212 | * | |
1213 | * This routine will probe for Qlogic 4xxx iSCSI host adapters. | |
1214 | * It returns zero if successful. It also initializes all data necessary for | |
1215 | * the driver. | |
1216 | **/ | |
1217 | static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, | |
1218 | const struct pci_device_id *ent) | |
1219 | { | |
1220 | int ret = -ENODEV, status; | |
1221 | struct Scsi_Host *host; | |
1222 | struct scsi_qla_host *ha; | |
1223 | struct ddb_entry *ddb_entry, *ddbtemp; | |
1224 | uint8_t init_retry_count = 0; | |
1225 | char buf[34]; | |
1226 | ||
1227 | if (pci_enable_device(pdev)) | |
1228 | return -1; | |
1229 | ||
1230 | host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); | |
1231 | if (host == NULL) { | |
1232 | printk(KERN_WARNING | |
1233 | "qla4xxx: Couldn't allocate host from scsi layer!\n"); | |
1234 | goto probe_disable_device; | |
1235 | } | |
1236 | ||
1237 | /* Clear our data area */ | |
1238 | ha = (struct scsi_qla_host *) host->hostdata; | |
1239 | memset(ha, 0, sizeof(*ha)); | |
1240 | ||
1241 | /* Save the information from PCI BIOS. */ | |
1242 | ha->pdev = pdev; | |
1243 | ha->host = host; | |
1244 | ha->host_no = host->host_no; | |
1245 | ||
1246 | /* Configure PCI I/O space. */ | |
1247 | ret = qla4xxx_iospace_config(ha); | |
1248 | if (ret) | |
1249 | goto probe_failed; | |
1250 | ||
1251 | dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n", | |
1252 | pdev->device, pdev->irq, ha->reg); | |
1253 | ||
1254 | qla4xxx_config_dma_addressing(ha); | |
1255 | ||
1256 | /* Initialize lists and spinlocks. */ | |
1257 | INIT_LIST_HEAD(&ha->ddb_list); | |
1258 | INIT_LIST_HEAD(&ha->free_srb_q); | |
1259 | ||
1260 | mutex_init(&ha->mbox_sem); | |
1261 | init_waitqueue_head(&ha->mailbox_wait_queue); | |
1262 | ||
1263 | spin_lock_init(&ha->hardware_lock); | |
1264 | spin_lock_init(&ha->list_lock); | |
1265 | ||
1266 | /* Allocate dma buffers */ | |
1267 | if (qla4xxx_mem_alloc(ha)) { | |
1268 | dev_warn(&ha->pdev->dev, | |
1269 | "[ERROR] Failed to allocate memory for adapter\n"); | |
1270 | ||
1271 | ret = -ENOMEM; | |
1272 | goto probe_failed; | |
1273 | } | |
1274 | ||
1275 | /* | |
1276 | * Initialize the Host adapter request/response queues and | |
1277 | * firmware | |
1278 | * NOTE: interrupts enabled upon successful completion | |
1279 | */ | |
1280 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1281 | while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) { | |
1282 | DEBUG2(printk("scsi: %s: retrying adapter initialization " | |
1283 | "(%d)\n", __func__, init_retry_count)); | |
1284 | qla4xxx_soft_reset(ha); | |
1285 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1286 | } | |
1287 | if (status == QLA_ERROR) { | |
1288 | dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n"); | |
1289 | ||
1290 | ret = -ENODEV; | |
1291 | goto probe_failed; | |
1292 | } | |
1293 | ||
1294 | host->cmd_per_lun = 3; | |
1295 | host->max_channel = 0; | |
1296 | host->max_lun = MAX_LUNS - 1; | |
1297 | host->max_id = MAX_TARGETS; | |
1298 | host->max_cmd_len = IOCB_MAX_CDB_LEN; | |
1299 | host->can_queue = MAX_SRBS ; | |
1300 | host->transportt = qla4xxx_scsi_transport; | |
1301 | ||
1302 | ret = scsi_init_shared_tag_map(host, MAX_SRBS); | |
1303 | if (ret) { | |
1304 | dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed"); | |
1305 | goto probe_failed; | |
1306 | } | |
1307 | ||
1308 | /* Startup the kernel thread for this host adapter. */ | |
1309 | DEBUG2(printk("scsi: %s: Starting kernel thread for " | |
1310 | "qla4xxx_dpc\n", __func__)); | |
1311 | sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); | |
1312 | ha->dpc_thread = create_singlethread_workqueue(buf); | |
1313 | if (!ha->dpc_thread) { | |
1314 | dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n"); | |
1315 | ret = -ENODEV; | |
1316 | goto probe_failed; | |
1317 | } | |
1318 | INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc, ha); | |
1319 | ||
1320 | ret = request_irq(pdev->irq, qla4xxx_intr_handler, | |
1321 | SA_INTERRUPT|SA_SHIRQ, "qla4xxx", ha); | |
1322 | if (ret) { | |
1323 | dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d" | |
1324 | " already in use.\n", pdev->irq); | |
1325 | goto probe_failed; | |
1326 | } | |
1327 | set_bit(AF_IRQ_ATTACHED, &ha->flags); | |
1328 | host->irq = pdev->irq; | |
1329 | DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq)); | |
1330 | ||
1331 | qla4xxx_enable_intrs(ha); | |
1332 | ||
1333 | /* Start timer thread. */ | |
1334 | qla4xxx_start_timer(ha, qla4xxx_timer, 1); | |
1335 | ||
1336 | set_bit(AF_INIT_DONE, &ha->flags); | |
1337 | ||
1338 | pci_set_drvdata(pdev, ha); | |
1339 | ||
1340 | ret = scsi_add_host(host, &pdev->dev); | |
1341 | if (ret) | |
1342 | goto probe_failed; | |
1343 | ||
1344 | /* Update transport device information for all devices. */ | |
1345 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
1346 | if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) | |
1347 | if (qla4xxx_add_sess(ddb_entry)) | |
1348 | goto remove_host; | |
1349 | } | |
1350 | ||
1351 | printk(KERN_INFO | |
1352 | " QLogic iSCSI HBA Driver version: %s\n" | |
1353 | " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", | |
1354 | qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), | |
1355 | ha->host_no, ha->firmware_version[0], ha->firmware_version[1], | |
1356 | ha->patch_number, ha->build_number); | |
1357 | ||
1358 | return 0; | |
1359 | ||
1360 | remove_host: | |
1361 | qla4xxx_free_ddb_list(ha); | |
1362 | scsi_remove_host(host); | |
1363 | ||
1364 | probe_failed: | |
1365 | qla4xxx_free_adapter(ha); | |
1366 | scsi_host_put(ha->host); | |
1367 | ||
1368 | probe_disable_device: | |
1369 | pci_disable_device(pdev); | |
1370 | ||
1371 | return ret; | |
1372 | } | |
1373 | ||
1374 | /** | |
1375 | * qla4xxx_remove_adapter - calback function to remove adapter. | |
1376 | * @pci_dev: PCI device pointer | |
1377 | **/ | |
1378 | static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) | |
1379 | { | |
1380 | struct scsi_qla_host *ha; | |
1381 | ||
1382 | ha = pci_get_drvdata(pdev); | |
1383 | ||
1384 | /* remove devs from iscsi_sessions to scsi_devices */ | |
1385 | qla4xxx_free_ddb_list(ha); | |
1386 | ||
1387 | scsi_remove_host(ha->host); | |
1388 | ||
1389 | qla4xxx_free_adapter(ha); | |
1390 | ||
1391 | scsi_host_put(ha->host); | |
1392 | ||
1393 | pci_set_drvdata(pdev, NULL); | |
1394 | } | |
1395 | ||
1396 | /** | |
1397 | * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. | |
1398 | * @ha: HA context | |
1399 | * | |
1400 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1401 | * supported addressing method. | |
1402 | */ | |
1403 | void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) | |
1404 | { | |
1405 | int retval; | |
1406 | ||
1407 | /* Update our PCI device dma_mask for full 64 bit mask */ | |
1408 | if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { | |
1409 | if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) { | |
1410 | dev_dbg(&ha->pdev->dev, | |
1411 | "Failed to set 64 bit PCI consistent mask; " | |
1412 | "using 32 bit.\n"); | |
1413 | retval = pci_set_consistent_dma_mask(ha->pdev, | |
1414 | DMA_32BIT_MASK); | |
1415 | } | |
1416 | } else | |
1417 | retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); | |
1418 | } | |
1419 | ||
1420 | static int qla4xxx_slave_alloc(struct scsi_device *sdev) | |
1421 | { | |
1422 | struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); | |
1423 | struct ddb_entry *ddb = sess->dd_data; | |
1424 | ||
1425 | sdev->hostdata = ddb; | |
1426 | sdev->tagged_supported = 1; | |
1427 | scsi_activate_tcq(sdev, sdev->host->can_queue); | |
1428 | return 0; | |
1429 | } | |
1430 | ||
1431 | static int qla4xxx_slave_configure(struct scsi_device *sdev) | |
1432 | { | |
1433 | sdev->tagged_supported = 1; | |
1434 | return 0; | |
1435 | } | |
1436 | ||
1437 | static void qla4xxx_slave_destroy(struct scsi_device *sdev) | |
1438 | { | |
1439 | scsi_deactivate_tcq(sdev, 1); | |
1440 | } | |
1441 | ||
1442 | /** | |
1443 | * qla4xxx_del_from_active_array - returns an active srb | |
1444 | * @ha: Pointer to host adapter structure. | |
1445 | * @index: index into to the active_array | |
1446 | * | |
1447 | * This routine removes and returns the srb at the specified index | |
1448 | **/ | |
1449 | struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index) | |
1450 | { | |
1451 | struct srb *srb = NULL; | |
1452 | struct scsi_cmnd *cmd; | |
1453 | ||
1454 | if (!(cmd = scsi_host_find_tag(ha->host, index))) | |
1455 | return srb; | |
1456 | ||
1457 | if (!(srb = (struct srb *)cmd->host_scribble)) | |
1458 | return srb; | |
1459 | ||
1460 | /* update counters */ | |
1461 | if (srb->flags & SRB_DMA_VALID) { | |
1462 | ha->req_q_count += srb->iocb_cnt; | |
1463 | ha->iocb_cnt -= srb->iocb_cnt; | |
1464 | if (srb->cmd) | |
1465 | srb->cmd->host_scribble = NULL; | |
1466 | } | |
1467 | return srb; | |
1468 | } | |
1469 | ||
1470 | /** | |
1471 | * qla4xxx_soft_reset - performs a SOFT RESET of hba. | |
1472 | * @ha: Pointer to host adapter structure. | |
1473 | **/ | |
1474 | int qla4xxx_soft_reset(struct scsi_qla_host *ha) | |
1475 | { | |
1476 | ||
1477 | DEBUG2(printk(KERN_WARNING "scsi%ld: %s: chip reset!\n", ha->host_no, | |
1478 | __func__)); | |
1479 | if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) { | |
1480 | int status = QLA_ERROR; | |
1481 | ||
1482 | if ((qla4010_soft_reset(ha) == QLA_SUCCESS) && | |
1483 | (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) && | |
1484 | (qla4010_soft_reset(ha) == QLA_SUCCESS) ) | |
1485 | status = QLA_SUCCESS; | |
1486 | return status; | |
1487 | } else | |
1488 | return qla4010_soft_reset(ha); | |
1489 | } | |
1490 | ||
1491 | /** | |
1492 | * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware | |
1493 | * @ha: actual ha whose done queue will contain the comd returned by firmware. | |
1494 | * @cmd: Scsi Command to wait on. | |
1495 | * | |
1496 | * This routine waits for the command to be returned by the Firmware | |
1497 | * for some max time. | |
1498 | **/ | |
1499 | static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, | |
1500 | struct scsi_cmnd *cmd) | |
1501 | { | |
1502 | int done = 0; | |
1503 | struct srb *rp; | |
1504 | uint32_t max_wait_time = EH_WAIT_CMD_TOV; | |
1505 | ||
1506 | do { | |
1507 | /* Checking to see if its returned to OS */ | |
1508 | rp = (struct srb *) cmd->SCp.ptr; | |
1509 | if (rp == NULL) { | |
1510 | done++; | |
1511 | break; | |
1512 | } | |
1513 | ||
1514 | msleep(2000); | |
1515 | } while (max_wait_time--); | |
1516 | ||
1517 | return done; | |
1518 | } | |
1519 | ||
1520 | /** | |
1521 | * qla4xxx_wait_for_hba_online - waits for HBA to come online | |
1522 | * @ha: Pointer to host adapter structure | |
1523 | **/ | |
1524 | static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) | |
1525 | { | |
1526 | unsigned long wait_online; | |
1527 | ||
1528 | wait_online = jiffies + (30 * HZ); | |
1529 | while (time_before(jiffies, wait_online)) { | |
1530 | ||
1531 | if (adapter_up(ha)) | |
1532 | return QLA_SUCCESS; | |
1533 | else if (ha->retry_reset_ha_cnt == 0) | |
1534 | return QLA_ERROR; | |
1535 | ||
1536 | msleep(2000); | |
1537 | } | |
1538 | ||
1539 | return QLA_ERROR; | |
1540 | } | |
1541 | ||
1542 | /** | |
1543 | * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish. | |
1544 | * @ha: pointer to to HBA | |
1545 | * @t: target id | |
1546 | * @l: lun id | |
1547 | * | |
1548 | * This function waits for all outstanding commands to a lun to complete. It | |
1549 | * returns 0 if all pending commands are returned and 1 otherwise. | |
1550 | **/ | |
1551 | static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha, | |
1552 | int t, int l) | |
1553 | { | |
1554 | int cnt; | |
1555 | int status = 0; | |
1556 | struct scsi_cmnd *cmd; | |
1557 | ||
1558 | /* | |
1559 | * Waiting for all commands for the designated target in the active | |
1560 | * array | |
1561 | */ | |
1562 | for (cnt = 0; cnt < ha->host->can_queue; cnt++) { | |
1563 | cmd = scsi_host_find_tag(ha->host, cnt); | |
1564 | if (cmd && cmd->device->id == t && cmd->device->lun == l) { | |
1565 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { | |
1566 | status++; | |
1567 | break; | |
1568 | } | |
1569 | } | |
1570 | } | |
1571 | return status; | |
1572 | } | |
1573 | ||
1574 | /** | |
1575 | * qla4xxx_eh_device_reset - callback for target reset. | |
1576 | * @cmd: Pointer to Linux's SCSI command structure | |
1577 | * | |
1578 | * This routine is called by the Linux OS to reset all luns on the | |
1579 | * specified target. | |
1580 | **/ | |
1581 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
1582 | { | |
1583 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
1584 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
1585 | struct srb *sp; | |
1586 | int ret = FAILED, stat; | |
1587 | ||
1588 | sp = (struct srb *) cmd->SCp.ptr; | |
1589 | if (!sp || !ddb_entry) | |
1590 | return ret; | |
1591 | ||
1592 | dev_info(&ha->pdev->dev, | |
1593 | "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, | |
1594 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1595 | ||
1596 | DEBUG2(printk(KERN_INFO | |
1597 | "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," | |
1598 | "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, | |
1599 | cmd, jiffies, cmd->timeout_per_command / HZ, | |
1600 | ha->dpc_flags, cmd->result, cmd->allowed)); | |
1601 | ||
1602 | /* FIXME: wait for hba to go online */ | |
1603 | stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); | |
1604 | if (stat != QLA_SUCCESS) { | |
1605 | dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat); | |
1606 | goto eh_dev_reset_done; | |
1607 | } | |
1608 | ||
1609 | /* Send marker. */ | |
1610 | ha->marker_needed = 1; | |
1611 | ||
1612 | /* | |
1613 | * If we are coming down the EH path, wait for all commands to complete | |
1614 | * for the device. | |
1615 | */ | |
1616 | if (cmd->device->host->shost_state == SHOST_RECOVERY) { | |
1617 | if (qla4xxx_eh_wait_for_active_target_commands(ha, | |
1618 | cmd->device->id, | |
1619 | cmd->device->lun)){ | |
1620 | dev_info(&ha->pdev->dev, | |
1621 | "DEVICE RESET FAILED - waiting for " | |
1622 | "commands.\n"); | |
1623 | goto eh_dev_reset_done; | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | dev_info(&ha->pdev->dev, | |
1628 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", | |
1629 | ha->host_no, cmd->device->channel, cmd->device->id, | |
1630 | cmd->device->lun); | |
1631 | ||
1632 | ret = SUCCESS; | |
1633 | ||
1634 | eh_dev_reset_done: | |
1635 | ||
1636 | return ret; | |
1637 | } | |
1638 | ||
1639 | /** | |
1640 | * qla4xxx_eh_host_reset - kernel callback | |
1641 | * @cmd: Pointer to Linux's SCSI command structure | |
1642 | * | |
1643 | * This routine is invoked by the Linux kernel to perform fatal error | |
1644 | * recovery on the specified adapter. | |
1645 | **/ | |
1646 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
1647 | { | |
1648 | int return_status = FAILED; | |
1649 | struct scsi_qla_host *ha; | |
1650 | ||
1651 | ha = (struct scsi_qla_host *) cmd->device->host->hostdata; | |
1652 | ||
1653 | dev_info(&ha->pdev->dev, | |
1654 | "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, | |
1655 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1656 | ||
1657 | if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1658 | DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " | |
1659 | "DEAD.\n", ha->host_no, cmd->device->channel, | |
1660 | __func__)); | |
1661 | ||
1662 | return FAILED; | |
1663 | } | |
1664 | ||
1665 | if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) { | |
1666 | return_status = SUCCESS; | |
1667 | } | |
1668 | ||
1669 | dev_info(&ha->pdev->dev, "HOST RESET %s.\n", | |
1670 | return_status == FAILED ? "FAILED" : "SUCCEDED"); | |
1671 | ||
1672 | return return_status; | |
1673 | } | |
1674 | ||
1675 | ||
1676 | static struct pci_device_id qla4xxx_pci_tbl[] = { | |
1677 | { | |
1678 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1679 | .device = PCI_DEVICE_ID_QLOGIC_ISP4010, | |
1680 | .subvendor = PCI_ANY_ID, | |
1681 | .subdevice = PCI_ANY_ID, | |
1682 | }, | |
1683 | { | |
1684 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1685 | .device = PCI_DEVICE_ID_QLOGIC_ISP4022, | |
1686 | .subvendor = PCI_ANY_ID, | |
1687 | .subdevice = PCI_ANY_ID, | |
1688 | }, | |
1689 | {0, 0}, | |
1690 | }; | |
1691 | MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); | |
1692 | ||
1693 | struct pci_driver qla4xxx_pci_driver = { | |
1694 | .name = DRIVER_NAME, | |
1695 | .id_table = qla4xxx_pci_tbl, | |
1696 | .probe = qla4xxx_probe_adapter, | |
1697 | .remove = qla4xxx_remove_adapter, | |
1698 | }; | |
1699 | ||
1700 | static int __init qla4xxx_module_init(void) | |
1701 | { | |
1702 | int ret; | |
1703 | ||
1704 | /* Allocate cache for SRBs. */ | |
1705 | srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, | |
1706 | SLAB_HWCACHE_ALIGN, NULL, NULL); | |
1707 | if (srb_cachep == NULL) { | |
1708 | printk(KERN_ERR | |
1709 | "%s: Unable to allocate SRB cache..." | |
1710 | "Failing load!\n", DRIVER_NAME); | |
1711 | ret = -ENOMEM; | |
1712 | goto no_srp_cache; | |
1713 | } | |
1714 | ||
1715 | /* Derive version string. */ | |
1716 | strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); | |
d7a297ba | 1717 | if (qla4_extended_error_logging) |
afaf5a2d DS |
1718 | strcat(qla4xxx_version_str, "-debug"); |
1719 | ||
1720 | qla4xxx_scsi_transport = | |
1721 | iscsi_register_transport(&qla4xxx_iscsi_transport); | |
1722 | if (!qla4xxx_scsi_transport){ | |
1723 | ret = -ENODEV; | |
1724 | goto release_srb_cache; | |
1725 | } | |
1726 | ||
1727 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
1728 | ret = pci_register_driver(&qla4xxx_pci_driver); | |
1729 | if (ret) | |
1730 | goto unregister_transport; | |
1731 | ||
1732 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
1733 | return 0; | |
1734 | unregister_transport: | |
1735 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1736 | release_srb_cache: | |
1737 | kmem_cache_destroy(srb_cachep); | |
1738 | no_srp_cache: | |
1739 | return ret; | |
1740 | } | |
1741 | ||
1742 | static void __exit qla4xxx_module_exit(void) | |
1743 | { | |
1744 | pci_unregister_driver(&qla4xxx_pci_driver); | |
1745 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1746 | kmem_cache_destroy(srb_cachep); | |
1747 | } | |
1748 | ||
1749 | module_init(qla4xxx_module_init); | |
1750 | module_exit(qla4xxx_module_exit); | |
1751 | ||
1752 | MODULE_AUTHOR("QLogic Corporation"); | |
1753 | MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); | |
1754 | MODULE_LICENSE("GPL"); | |
1755 | MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |