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Commit | Line | Data |
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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" | |
bee4fe8e DS |
13 | #include "ql4_version.h" |
14 | #include "ql4_glbl.h" | |
15 | #include "ql4_dbg.h" | |
16 | #include "ql4_inline.h" | |
afaf5a2d DS |
17 | |
18 | /* | |
19 | * Driver version | |
20 | */ | |
47975477 | 21 | static char qla4xxx_version_str[40]; |
afaf5a2d DS |
22 | |
23 | /* | |
24 | * SRB allocation cache | |
25 | */ | |
e18b890b | 26 | static struct kmem_cache *srb_cachep; |
afaf5a2d DS |
27 | |
28 | /* | |
29 | * Module parameter information and variables | |
30 | */ | |
31 | int ql4xdiscoverywait = 60; | |
32 | module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR); | |
33 | MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time"); | |
34 | int ql4xdontresethba = 0; | |
35 | module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR); | |
36 | MODULE_PARM_DESC(ql4xdontresethba, | |
37 | "Dont reset the HBA when the driver gets 0x8002 AEN " | |
38 | " default it will reset hba :0" | |
39 | " set to 1 to avoid resetting HBA"); | |
40 | ||
11010fec AV |
41 | int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ |
42 | module_param(ql4xextended_error_logging, int, S_IRUGO | S_IRUSR); | |
43 | MODULE_PARM_DESC(ql4xextended_error_logging, | |
afaf5a2d DS |
44 | "Option to enable extended error logging, " |
45 | "Default is 0 - no logging, 1 - debug logging"); | |
46 | ||
477ffb9d DS |
47 | int ql4_mod_unload = 0; |
48 | ||
afaf5a2d DS |
49 | /* |
50 | * SCSI host template entry points | |
51 | */ | |
47975477 | 52 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); |
afaf5a2d DS |
53 | |
54 | /* | |
55 | * iSCSI template entry points | |
56 | */ | |
2174a04e MC |
57 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
58 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
59 | struct sockaddr *dst_addr); | |
afaf5a2d DS |
60 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, |
61 | enum iscsi_param param, char *buf); | |
62 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, | |
63 | enum iscsi_param param, char *buf); | |
aa1e93a2 MC |
64 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
65 | enum iscsi_host_param param, char *buf); | |
afaf5a2d DS |
66 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); |
67 | ||
68 | /* | |
69 | * SCSI host template entry points | |
70 | */ | |
71 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
72 | void (*done) (struct scsi_cmnd *)); | |
73 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); | |
74 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); | |
75 | static int qla4xxx_slave_alloc(struct scsi_device *device); | |
76 | static int qla4xxx_slave_configure(struct scsi_device *device); | |
77 | static void qla4xxx_slave_destroy(struct scsi_device *sdev); | |
024f801f | 78 | static void qla4xxx_scan_start(struct Scsi_Host *shost); |
afaf5a2d DS |
79 | |
80 | static struct scsi_host_template qla4xxx_driver_template = { | |
81 | .module = THIS_MODULE, | |
82 | .name = DRIVER_NAME, | |
83 | .proc_name = DRIVER_NAME, | |
84 | .queuecommand = qla4xxx_queuecommand, | |
85 | ||
86 | .eh_device_reset_handler = qla4xxx_eh_device_reset, | |
87 | .eh_host_reset_handler = qla4xxx_eh_host_reset, | |
88 | ||
89 | .slave_configure = qla4xxx_slave_configure, | |
90 | .slave_alloc = qla4xxx_slave_alloc, | |
91 | .slave_destroy = qla4xxx_slave_destroy, | |
92 | ||
921601b7 | 93 | .scan_finished = iscsi_scan_finished, |
024f801f | 94 | .scan_start = qla4xxx_scan_start, |
921601b7 | 95 | |
afaf5a2d DS |
96 | .this_id = -1, |
97 | .cmd_per_lun = 3, | |
98 | .use_clustering = ENABLE_CLUSTERING, | |
99 | .sg_tablesize = SG_ALL, | |
100 | ||
101 | .max_sectors = 0xFFFF, | |
102 | }; | |
103 | ||
104 | static struct iscsi_transport qla4xxx_iscsi_transport = { | |
105 | .owner = THIS_MODULE, | |
106 | .name = DRIVER_NAME, | |
d8196ed2 MC |
107 | .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | |
108 | CAP_DATA_PATH_OFFLOAD, | |
aa1e93a2 MC |
109 | .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
110 | ISCSI_TARGET_NAME | ISCSI_TPGT, | |
8ad5781a | 111 | .host_param_mask = ISCSI_HOST_HWADDRESS | |
22236961 | 112 | ISCSI_HOST_IPADDRESS | |
8ad5781a | 113 | ISCSI_HOST_INITIATOR_NAME, |
afaf5a2d DS |
114 | .sessiondata_size = sizeof(struct ddb_entry), |
115 | .host_template = &qla4xxx_driver_template, | |
116 | ||
117 | .tgt_dscvr = qla4xxx_tgt_dscvr, | |
118 | .get_conn_param = qla4xxx_conn_get_param, | |
119 | .get_session_param = qla4xxx_sess_get_param, | |
aa1e93a2 | 120 | .get_host_param = qla4xxx_host_get_param, |
afaf5a2d DS |
121 | .session_recovery_timedout = qla4xxx_recovery_timedout, |
122 | }; | |
123 | ||
124 | static struct scsi_transport_template *qla4xxx_scsi_transport; | |
125 | ||
126 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) | |
127 | { | |
128 | struct ddb_entry *ddb_entry = session->dd_data; | |
129 | struct scsi_qla_host *ha = ddb_entry->ha; | |
130 | ||
568d303b MC |
131 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
132 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); | |
133 | ||
134 | DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count " | |
135 | "of (%d) secs exhausted, marking device DEAD.\n", | |
136 | ha->host_no, __func__, ddb_entry->fw_ddb_index, | |
137 | ha->port_down_retry_count)); | |
138 | ||
139 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc " | |
140 | "flags = 0x%lx\n", | |
141 | ha->host_no, __func__, ha->dpc_flags)); | |
142 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
143 | } | |
afaf5a2d DS |
144 | } |
145 | ||
aa1e93a2 MC |
146 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
147 | enum iscsi_host_param param, char *buf) | |
148 | { | |
149 | struct scsi_qla_host *ha = to_qla_host(shost); | |
150 | int len; | |
151 | ||
152 | switch (param) { | |
153 | case ISCSI_HOST_PARAM_HWADDRESS: | |
7ffc49a6 | 154 | len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); |
8ad5781a | 155 | break; |
22236961 MC |
156 | case ISCSI_HOST_PARAM_IPADDRESS: |
157 | len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], | |
158 | ha->ip_address[1], ha->ip_address[2], | |
159 | ha->ip_address[3]); | |
160 | break; | |
8ad5781a | 161 | case ISCSI_HOST_PARAM_INITIATOR_NAME: |
22236961 | 162 | len = sprintf(buf, "%s\n", ha->name_string); |
aa1e93a2 MC |
163 | break; |
164 | default: | |
165 | return -ENOSYS; | |
166 | } | |
167 | ||
168 | return len; | |
169 | } | |
170 | ||
afaf5a2d DS |
171 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
172 | enum iscsi_param param, char *buf) | |
173 | { | |
174 | struct ddb_entry *ddb_entry = sess->dd_data; | |
175 | int len; | |
176 | ||
177 | switch (param) { | |
178 | case ISCSI_PARAM_TARGET_NAME: | |
179 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
180 | ddb_entry->iscsi_name); | |
181 | break; | |
182 | case ISCSI_PARAM_TPGT: | |
183 | len = sprintf(buf, "%u\n", ddb_entry->tpgt); | |
184 | break; | |
185 | default: | |
186 | return -ENOSYS; | |
187 | } | |
188 | ||
189 | return len; | |
190 | } | |
191 | ||
192 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
193 | enum iscsi_param param, char *buf) | |
194 | { | |
195 | struct iscsi_cls_session *session; | |
196 | struct ddb_entry *ddb_entry; | |
197 | int len; | |
198 | ||
199 | session = iscsi_dev_to_session(conn->dev.parent); | |
200 | ddb_entry = session->dd_data; | |
201 | ||
202 | switch (param) { | |
203 | case ISCSI_PARAM_CONN_PORT: | |
204 | len = sprintf(buf, "%hu\n", ddb_entry->port); | |
205 | break; | |
206 | case ISCSI_PARAM_CONN_ADDRESS: | |
207 | /* TODO: what are the ipv6 bits */ | |
208 | len = sprintf(buf, "%u.%u.%u.%u\n", | |
209 | NIPQUAD(ddb_entry->ip_addr)); | |
210 | break; | |
211 | default: | |
212 | return -ENOSYS; | |
213 | } | |
214 | ||
215 | return len; | |
216 | } | |
217 | ||
2174a04e MC |
218 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
219 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
220 | struct sockaddr *dst_addr) | |
afaf5a2d DS |
221 | { |
222 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
223 | struct sockaddr_in *addr; |
224 | struct sockaddr_in6 *addr6; | |
225 | int ret = 0; | |
226 | ||
afaf5a2d DS |
227 | ha = (struct scsi_qla_host *) shost->hostdata; |
228 | ||
229 | switch (type) { | |
230 | case ISCSI_TGT_DSCVR_SEND_TARGETS: | |
231 | if (dst_addr->sa_family == AF_INET) { | |
232 | addr = (struct sockaddr_in *)dst_addr; | |
233 | if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, | |
234 | addr->sin_port) != QLA_SUCCESS) | |
235 | ret = -EIO; | |
236 | } else if (dst_addr->sa_family == AF_INET6) { | |
237 | /* | |
238 | * TODO: fix qla4xxx_send_tgts | |
239 | */ | |
240 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
241 | if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, | |
242 | addr6->sin6_port) != QLA_SUCCESS) | |
243 | ret = -EIO; | |
244 | } else | |
245 | ret = -ENOSYS; | |
246 | break; | |
247 | default: | |
248 | ret = -ENOSYS; | |
249 | } | |
afaf5a2d DS |
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) { | |
26974789 | 259 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); |
afaf5a2d DS |
260 | iscsi_remove_session(ddb_entry->sess); |
261 | } | |
262 | iscsi_free_session(ddb_entry->sess); | |
263 | } | |
264 | ||
265 | int qla4xxx_add_sess(struct ddb_entry *ddb_entry) | |
266 | { | |
267 | int err; | |
268 | ||
26974789 | 269 | ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; |
afaf5a2d DS |
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 | } | |
b635930d MC |
282 | |
283 | /* finally ready to go */ | |
284 | iscsi_unblock_session(ddb_entry->sess); | |
afaf5a2d DS |
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 | ||
024f801f MC |
304 | static void qla4xxx_scan_start(struct Scsi_Host *shost) |
305 | { | |
306 | struct scsi_qla_host *ha = shost_priv(shost); | |
307 | struct ddb_entry *ddb_entry, *ddbtemp; | |
308 | ||
309 | /* finish setup of sessions that were already setup in firmware */ | |
310 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
311 | if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) | |
312 | qla4xxx_add_sess(ddb_entry); | |
313 | } | |
314 | } | |
315 | ||
afaf5a2d DS |
316 | /* |
317 | * Timer routines | |
318 | */ | |
319 | ||
320 | static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, | |
321 | unsigned long interval) | |
322 | { | |
323 | DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", | |
324 | __func__, ha->host->host_no)); | |
325 | init_timer(&ha->timer); | |
326 | ha->timer.expires = jiffies + interval * HZ; | |
327 | ha->timer.data = (unsigned long)ha; | |
328 | ha->timer.function = (void (*)(unsigned long))func; | |
329 | add_timer(&ha->timer); | |
330 | ha->timer_active = 1; | |
331 | } | |
332 | ||
333 | static void qla4xxx_stop_timer(struct scsi_qla_host *ha) | |
334 | { | |
335 | del_timer_sync(&ha->timer); | |
336 | ha->timer_active = 0; | |
337 | } | |
338 | ||
339 | /*** | |
340 | * qla4xxx_mark_device_missing - mark a device as missing. | |
341 | * @ha: Pointer to host adapter structure. | |
342 | * @ddb_entry: Pointer to device database entry | |
343 | * | |
344 | * This routine marks a device missing and resets the relogin retry count. | |
345 | **/ | |
346 | void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, | |
347 | struct ddb_entry *ddb_entry) | |
348 | { | |
349 | atomic_set(&ddb_entry->state, DDB_STATE_MISSING); | |
350 | DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n", | |
351 | ha->host_no, ddb_entry->bus, ddb_entry->target, | |
352 | ddb_entry->fw_ddb_index)); | |
b635930d | 353 | iscsi_block_session(ddb_entry->sess); |
afaf5a2d DS |
354 | iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); |
355 | } | |
356 | ||
357 | static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, | |
358 | struct ddb_entry *ddb_entry, | |
359 | struct scsi_cmnd *cmd, | |
360 | void (*done)(struct scsi_cmnd *)) | |
361 | { | |
362 | struct srb *srb; | |
363 | ||
364 | srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
365 | if (!srb) | |
366 | return srb; | |
367 | ||
368 | atomic_set(&srb->ref_count, 1); | |
369 | srb->ha = ha; | |
370 | srb->ddb = ddb_entry; | |
371 | srb->cmd = cmd; | |
372 | srb->flags = 0; | |
373 | cmd->SCp.ptr = (void *)srb; | |
374 | cmd->scsi_done = done; | |
375 | ||
376 | return srb; | |
377 | } | |
378 | ||
379 | static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) | |
380 | { | |
381 | struct scsi_cmnd *cmd = srb->cmd; | |
382 | ||
383 | if (srb->flags & SRB_DMA_VALID) { | |
5f7186c8 | 384 | scsi_dma_unmap(cmd); |
afaf5a2d DS |
385 | srb->flags &= ~SRB_DMA_VALID; |
386 | } | |
387 | cmd->SCp.ptr = NULL; | |
388 | } | |
389 | ||
390 | void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) | |
391 | { | |
392 | struct scsi_cmnd *cmd = srb->cmd; | |
393 | ||
394 | qla4xxx_srb_free_dma(ha, srb); | |
395 | ||
396 | mempool_free(srb, ha->srb_mempool); | |
397 | ||
398 | cmd->scsi_done(cmd); | |
399 | } | |
400 | ||
401 | /** | |
402 | * qla4xxx_queuecommand - scsi layer issues scsi command to driver. | |
403 | * @cmd: Pointer to Linux's SCSI command structure | |
404 | * @done_fn: Function that the driver calls to notify the SCSI mid-layer | |
405 | * that the command has been processed. | |
406 | * | |
407 | * Remarks: | |
408 | * This routine is invoked by Linux to send a SCSI command to the driver. | |
409 | * The mid-level driver tries to ensure that queuecommand never gets | |
410 | * invoked concurrently with itself or the interrupt handler (although | |
411 | * the interrupt handler may call this routine as part of request- | |
412 | * completion handling). Unfortunely, it sometimes calls the scheduler | |
413 | * in interrupt context which is a big NO! NO!. | |
414 | **/ | |
415 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
416 | void (*done)(struct scsi_cmnd *)) | |
417 | { | |
418 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
419 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
7fb1921b | 420 | struct iscsi_cls_session *sess = ddb_entry->sess; |
afaf5a2d DS |
421 | struct srb *srb; |
422 | int rval; | |
423 | ||
7fb1921b MC |
424 | if (!sess) { |
425 | cmd->result = DID_IMM_RETRY << 16; | |
426 | goto qc_fail_command; | |
427 | } | |
428 | ||
429 | rval = iscsi_session_chkready(sess); | |
430 | if (rval) { | |
431 | cmd->result = rval; | |
432 | goto qc_fail_command; | |
433 | } | |
434 | ||
afaf5a2d DS |
435 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
436 | if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { | |
437 | cmd->result = DID_NO_CONNECT << 16; | |
438 | goto qc_fail_command; | |
439 | } | |
440 | goto qc_host_busy; | |
441 | } | |
442 | ||
477ffb9d DS |
443 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) |
444 | goto qc_host_busy; | |
445 | ||
afaf5a2d DS |
446 | spin_unlock_irq(ha->host->host_lock); |
447 | ||
448 | srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); | |
449 | if (!srb) | |
450 | goto qc_host_busy_lock; | |
451 | ||
452 | rval = qla4xxx_send_command_to_isp(ha, srb); | |
453 | if (rval != QLA_SUCCESS) | |
454 | goto qc_host_busy_free_sp; | |
455 | ||
456 | spin_lock_irq(ha->host->host_lock); | |
457 | return 0; | |
458 | ||
459 | qc_host_busy_free_sp: | |
460 | qla4xxx_srb_free_dma(ha, srb); | |
461 | mempool_free(srb, ha->srb_mempool); | |
462 | ||
463 | qc_host_busy_lock: | |
464 | spin_lock_irq(ha->host->host_lock); | |
465 | ||
466 | qc_host_busy: | |
467 | return SCSI_MLQUEUE_HOST_BUSY; | |
468 | ||
469 | qc_fail_command: | |
470 | done(cmd); | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
475 | /** | |
476 | * qla4xxx_mem_free - frees memory allocated to adapter | |
477 | * @ha: Pointer to host adapter structure. | |
478 | * | |
479 | * Frees memory previously allocated by qla4xxx_mem_alloc | |
480 | **/ | |
481 | static void qla4xxx_mem_free(struct scsi_qla_host *ha) | |
482 | { | |
483 | if (ha->queues) | |
484 | dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, | |
485 | ha->queues_dma); | |
486 | ||
487 | ha->queues_len = 0; | |
488 | ha->queues = NULL; | |
489 | ha->queues_dma = 0; | |
490 | ha->request_ring = NULL; | |
491 | ha->request_dma = 0; | |
492 | ha->response_ring = NULL; | |
493 | ha->response_dma = 0; | |
494 | ha->shadow_regs = NULL; | |
495 | ha->shadow_regs_dma = 0; | |
496 | ||
497 | /* Free srb pool. */ | |
498 | if (ha->srb_mempool) | |
499 | mempool_destroy(ha->srb_mempool); | |
500 | ||
501 | ha->srb_mempool = NULL; | |
502 | ||
503 | /* release io space registers */ | |
504 | if (ha->reg) | |
505 | iounmap(ha->reg); | |
506 | pci_release_regions(ha->pdev); | |
507 | } | |
508 | ||
509 | /** | |
510 | * qla4xxx_mem_alloc - allocates memory for use by adapter. | |
511 | * @ha: Pointer to host adapter structure | |
512 | * | |
513 | * Allocates DMA memory for request and response queues. Also allocates memory | |
514 | * for srbs. | |
515 | **/ | |
516 | static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) | |
517 | { | |
518 | unsigned long align; | |
519 | ||
520 | /* Allocate contiguous block of DMA memory for queues. */ | |
521 | ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
522 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + | |
523 | sizeof(struct shadow_regs) + | |
524 | MEM_ALIGN_VALUE + | |
525 | (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); | |
526 | ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, | |
527 | &ha->queues_dma, GFP_KERNEL); | |
528 | if (ha->queues == NULL) { | |
529 | dev_warn(&ha->pdev->dev, | |
530 | "Memory Allocation failed - queues.\n"); | |
531 | ||
532 | goto mem_alloc_error_exit; | |
533 | } | |
534 | memset(ha->queues, 0, ha->queues_len); | |
535 | ||
536 | /* | |
537 | * As per RISC alignment requirements -- the bus-address must be a | |
538 | * multiple of the request-ring size (in bytes). | |
539 | */ | |
540 | align = 0; | |
541 | if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) | |
542 | align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & | |
543 | (MEM_ALIGN_VALUE - 1)); | |
544 | ||
545 | /* Update request and response queue pointers. */ | |
546 | ha->request_dma = ha->queues_dma + align; | |
547 | ha->request_ring = (struct queue_entry *) (ha->queues + align); | |
548 | ha->response_dma = ha->queues_dma + align + | |
549 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); | |
550 | ha->response_ring = (struct queue_entry *) (ha->queues + align + | |
551 | (REQUEST_QUEUE_DEPTH * | |
552 | QUEUE_SIZE)); | |
553 | ha->shadow_regs_dma = ha->queues_dma + align + | |
554 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
555 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); | |
556 | ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + | |
557 | (REQUEST_QUEUE_DEPTH * | |
558 | QUEUE_SIZE) + | |
559 | (RESPONSE_QUEUE_DEPTH * | |
560 | QUEUE_SIZE)); | |
561 | ||
562 | /* Allocate memory for srb pool. */ | |
563 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
564 | mempool_free_slab, srb_cachep); | |
565 | if (ha->srb_mempool == NULL) { | |
566 | dev_warn(&ha->pdev->dev, | |
567 | "Memory Allocation failed - SRB Pool.\n"); | |
568 | ||
569 | goto mem_alloc_error_exit; | |
570 | } | |
571 | ||
572 | return QLA_SUCCESS; | |
573 | ||
574 | mem_alloc_error_exit: | |
575 | qla4xxx_mem_free(ha); | |
576 | return QLA_ERROR; | |
577 | } | |
578 | ||
579 | /** | |
580 | * qla4xxx_timer - checks every second for work to do. | |
581 | * @ha: Pointer to host adapter structure. | |
582 | **/ | |
583 | static void qla4xxx_timer(struct scsi_qla_host *ha) | |
584 | { | |
585 | struct ddb_entry *ddb_entry, *dtemp; | |
586 | int start_dpc = 0; | |
587 | ||
588 | /* Search for relogin's to time-out and port down retry. */ | |
589 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
590 | /* Count down time between sending relogins */ | |
591 | if (adapter_up(ha) && | |
592 | !test_bit(DF_RELOGIN, &ddb_entry->flags) && | |
593 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
594 | if (atomic_read(&ddb_entry->retry_relogin_timer) != | |
595 | INVALID_ENTRY) { | |
596 | if (atomic_read(&ddb_entry->retry_relogin_timer) | |
597 | == 0) { | |
598 | atomic_set(&ddb_entry-> | |
599 | retry_relogin_timer, | |
600 | INVALID_ENTRY); | |
601 | set_bit(DPC_RELOGIN_DEVICE, | |
602 | &ha->dpc_flags); | |
603 | set_bit(DF_RELOGIN, &ddb_entry->flags); | |
604 | DEBUG2(printk("scsi%ld: %s: index [%d]" | |
605 | " login device\n", | |
606 | ha->host_no, __func__, | |
607 | ddb_entry->fw_ddb_index)); | |
608 | } else | |
609 | atomic_dec(&ddb_entry-> | |
610 | retry_relogin_timer); | |
611 | } | |
612 | } | |
613 | ||
614 | /* Wait for relogin to timeout */ | |
615 | if (atomic_read(&ddb_entry->relogin_timer) && | |
616 | (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { | |
617 | /* | |
618 | * If the relogin times out and the device is | |
619 | * still NOT ONLINE then try and relogin again. | |
620 | */ | |
621 | if (atomic_read(&ddb_entry->state) != | |
622 | DDB_STATE_ONLINE && | |
623 | ddb_entry->fw_ddb_device_state == | |
624 | DDB_DS_SESSION_FAILED) { | |
625 | /* Reset retry relogin timer */ | |
626 | atomic_inc(&ddb_entry->relogin_retry_count); | |
627 | DEBUG2(printk("scsi%ld: index[%d] relogin" | |
628 | " timed out-retrying" | |
629 | " relogin (%d)\n", | |
630 | ha->host_no, | |
631 | ddb_entry->fw_ddb_index, | |
632 | atomic_read(&ddb_entry-> | |
633 | relogin_retry_count)) | |
634 | ); | |
635 | start_dpc++; | |
636 | DEBUG(printk("scsi%ld:%d:%d: index [%d] " | |
637 | "initate relogin after" | |
638 | " %d seconds\n", | |
639 | ha->host_no, ddb_entry->bus, | |
640 | ddb_entry->target, | |
641 | ddb_entry->fw_ddb_index, | |
642 | ddb_entry->default_time2wait + 4) | |
643 | ); | |
644 | ||
645 | atomic_set(&ddb_entry->retry_relogin_timer, | |
646 | ddb_entry->default_time2wait + 4); | |
647 | } | |
648 | } | |
649 | } | |
650 | ||
651 | /* Check for heartbeat interval. */ | |
652 | if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && | |
653 | ha->heartbeat_interval != 0) { | |
654 | ha->seconds_since_last_heartbeat++; | |
655 | if (ha->seconds_since_last_heartbeat > | |
656 | ha->heartbeat_interval + 2) | |
657 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
658 | } | |
659 | ||
660 | ||
661 | /* Wakeup the dpc routine for this adapter, if needed. */ | |
662 | if ((start_dpc || | |
663 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
664 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || | |
665 | test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || | |
666 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || | |
667 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
668 | test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || | |
669 | test_bit(DPC_AEN, &ha->dpc_flags)) && | |
670 | ha->dpc_thread) { | |
671 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" | |
672 | " - dpc flags = 0x%lx\n", | |
673 | ha->host_no, __func__, ha->dpc_flags)); | |
674 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
675 | } | |
676 | ||
677 | /* Reschedule timer thread to call us back in one second */ | |
678 | mod_timer(&ha->timer, jiffies + HZ); | |
679 | ||
680 | DEBUG2(ha->seconds_since_last_intr++); | |
681 | } | |
682 | ||
683 | /** | |
684 | * qla4xxx_cmd_wait - waits for all outstanding commands to complete | |
685 | * @ha: Pointer to host adapter structure. | |
686 | * | |
687 | * This routine stalls the driver until all outstanding commands are returned. | |
688 | * Caller must release the Hardware Lock prior to calling this routine. | |
689 | **/ | |
690 | static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) | |
691 | { | |
692 | uint32_t index = 0; | |
693 | int stat = QLA_SUCCESS; | |
694 | unsigned long flags; | |
695 | struct scsi_cmnd *cmd; | |
696 | int wait_cnt = WAIT_CMD_TOV; /* | |
697 | * Initialized for 30 seconds as we | |
698 | * expect all commands to retuned | |
699 | * ASAP. | |
700 | */ | |
701 | ||
702 | while (wait_cnt) { | |
703 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
704 | /* Find a command that hasn't completed. */ | |
705 | for (index = 0; index < ha->host->can_queue; index++) { | |
706 | cmd = scsi_host_find_tag(ha->host, index); | |
707 | if (cmd != NULL) | |
708 | break; | |
709 | } | |
710 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
711 | ||
712 | /* If No Commands are pending, wait is complete */ | |
713 | if (index == ha->host->can_queue) { | |
714 | break; | |
715 | } | |
716 | ||
717 | /* If we timed out on waiting for commands to come back | |
718 | * return ERROR. | |
719 | */ | |
720 | wait_cnt--; | |
721 | if (wait_cnt == 0) | |
722 | stat = QLA_ERROR; | |
723 | else { | |
724 | msleep(1000); | |
725 | } | |
726 | } /* End of While (wait_cnt) */ | |
727 | ||
728 | return stat; | |
729 | } | |
730 | ||
bee4fe8e | 731 | void qla4xxx_hw_reset(struct scsi_qla_host *ha) |
afaf5a2d | 732 | { |
afaf5a2d | 733 | uint32_t ctrl_status; |
477ffb9d DS |
734 | unsigned long flags = 0; |
735 | ||
736 | DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); | |
afaf5a2d DS |
737 | |
738 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
739 | ||
740 | /* | |
741 | * If the SCSI Reset Interrupt bit is set, clear it. | |
742 | * Otherwise, the Soft Reset won't work. | |
743 | */ | |
744 | ctrl_status = readw(&ha->reg->ctrl_status); | |
745 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) | |
746 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
747 | ||
748 | /* Issue Soft Reset */ | |
749 | writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); | |
750 | readl(&ha->reg->ctrl_status); | |
751 | ||
752 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
477ffb9d DS |
753 | } |
754 | ||
755 | /** | |
756 | * qla4xxx_soft_reset - performs soft reset. | |
757 | * @ha: Pointer to host adapter structure. | |
758 | **/ | |
759 | int qla4xxx_soft_reset(struct scsi_qla_host *ha) | |
760 | { | |
761 | uint32_t max_wait_time; | |
762 | unsigned long flags = 0; | |
763 | int status = QLA_ERROR; | |
764 | uint32_t ctrl_status; | |
765 | ||
766 | qla4xxx_hw_reset(ha); | |
afaf5a2d DS |
767 | |
768 | /* Wait until the Network Reset Intr bit is cleared */ | |
769 | max_wait_time = RESET_INTR_TOV; | |
770 | do { | |
771 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
772 | ctrl_status = readw(&ha->reg->ctrl_status); | |
773 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
774 | ||
775 | if ((ctrl_status & CSR_NET_RESET_INTR) == 0) | |
776 | break; | |
777 | ||
778 | msleep(1000); | |
779 | } while ((--max_wait_time)); | |
780 | ||
781 | if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { | |
782 | DEBUG2(printk(KERN_WARNING | |
783 | "scsi%ld: Network Reset Intr not cleared by " | |
784 | "Network function, clearing it now!\n", | |
785 | ha->host_no)); | |
786 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
787 | writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); | |
788 | readl(&ha->reg->ctrl_status); | |
789 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
790 | } | |
791 | ||
792 | /* Wait until the firmware tells us the Soft Reset is done */ | |
793 | max_wait_time = SOFT_RESET_TOV; | |
794 | do { | |
795 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
796 | ctrl_status = readw(&ha->reg->ctrl_status); | |
797 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
798 | ||
799 | if ((ctrl_status & CSR_SOFT_RESET) == 0) { | |
800 | status = QLA_SUCCESS; | |
801 | break; | |
802 | } | |
803 | ||
804 | msleep(1000); | |
805 | } while ((--max_wait_time)); | |
806 | ||
807 | /* | |
808 | * Also, make sure that the SCSI Reset Interrupt bit has been cleared | |
809 | * after the soft reset has taken place. | |
810 | */ | |
811 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
812 | ctrl_status = readw(&ha->reg->ctrl_status); | |
813 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { | |
814 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
815 | readl(&ha->reg->ctrl_status); | |
816 | } | |
817 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
818 | ||
819 | /* If soft reset fails then most probably the bios on other | |
820 | * function is also enabled. | |
821 | * Since the initialization is sequential the other fn | |
822 | * wont be able to acknowledge the soft reset. | |
823 | * Issue a force soft reset to workaround this scenario. | |
824 | */ | |
825 | if (max_wait_time == 0) { | |
826 | /* Issue Force Soft Reset */ | |
827 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
828 | writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); | |
829 | readl(&ha->reg->ctrl_status); | |
830 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
831 | /* Wait until the firmware tells us the Soft Reset is done */ | |
832 | max_wait_time = SOFT_RESET_TOV; | |
833 | do { | |
834 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
835 | ctrl_status = readw(&ha->reg->ctrl_status); | |
836 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
837 | ||
838 | if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { | |
839 | status = QLA_SUCCESS; | |
840 | break; | |
841 | } | |
842 | ||
843 | msleep(1000); | |
844 | } while ((--max_wait_time)); | |
845 | } | |
846 | ||
847 | return status; | |
848 | } | |
849 | ||
afaf5a2d DS |
850 | /** |
851 | * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S. | |
852 | * @ha: Pointer to host adapter structure. | |
853 | * | |
854 | * This routine is called just prior to a HARD RESET to return all | |
855 | * outstanding commands back to the Operating System. | |
856 | * Caller should make sure that the following locks are released | |
857 | * before this calling routine: Hardware lock, and io_request_lock. | |
858 | **/ | |
859 | static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) | |
860 | { | |
861 | struct srb *srb; | |
862 | int i; | |
863 | unsigned long flags; | |
864 | ||
865 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
866 | for (i = 0; i < ha->host->can_queue; i++) { | |
867 | srb = qla4xxx_del_from_active_array(ha, i); | |
868 | if (srb != NULL) { | |
869 | srb->cmd->result = DID_RESET << 16; | |
870 | qla4xxx_srb_compl(ha, srb); | |
871 | } | |
872 | } | |
873 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
874 | ||
875 | } | |
876 | ||
afaf5a2d DS |
877 | /** |
878 | * qla4xxx_recover_adapter - recovers adapter after a fatal error | |
879 | * @ha: Pointer to host adapter structure. | |
880 | * @renew_ddb_list: Indicates what to do with the adapter's ddb list | |
50a29aec MC |
881 | * |
882 | * renew_ddb_list value can be 0=preserve ddb list, 1=destroy and rebuild | |
883 | * ddb list. | |
afaf5a2d DS |
884 | **/ |
885 | static int qla4xxx_recover_adapter(struct scsi_qla_host *ha, | |
886 | uint8_t renew_ddb_list) | |
887 | { | |
888 | int status; | |
889 | ||
890 | /* Stall incoming I/O until we are done */ | |
891 | clear_bit(AF_ONLINE, &ha->flags); | |
50a29aec | 892 | |
afaf5a2d DS |
893 | DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no, |
894 | __func__)); | |
895 | ||
896 | /* Wait for outstanding commands to complete. | |
897 | * Stalls the driver for max 30 secs | |
898 | */ | |
899 | status = qla4xxx_cmd_wait(ha); | |
900 | ||
901 | qla4xxx_disable_intrs(ha); | |
902 | ||
903 | /* Flush any pending ddb changed AENs */ | |
904 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
905 | ||
906 | /* Reset the firmware. If successful, function | |
907 | * returns with ISP interrupts enabled. | |
908 | */ | |
909 | if (status == QLA_SUCCESS) { | |
910 | DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n", | |
911 | ha->host_no, __func__)); | |
f26b9044 DS |
912 | qla4xxx_flush_active_srbs(ha); |
913 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) | |
914 | status = qla4xxx_soft_reset(ha); | |
915 | else | |
916 | status = QLA_ERROR; | |
afaf5a2d DS |
917 | } |
918 | ||
919 | /* Flush any pending ddb changed AENs */ | |
920 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
921 | ||
922 | /* Re-initialize firmware. If successful, function returns | |
923 | * with ISP interrupts enabled */ | |
924 | if (status == QLA_SUCCESS) { | |
925 | DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n", | |
926 | ha->host_no, __func__)); | |
927 | ||
928 | /* If successful, AF_ONLINE flag set in | |
929 | * qla4xxx_initialize_adapter */ | |
930 | status = qla4xxx_initialize_adapter(ha, renew_ddb_list); | |
931 | } | |
932 | ||
933 | /* Failed adapter initialization? | |
934 | * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */ | |
935 | if ((test_bit(AF_ONLINE, &ha->flags) == 0) && | |
936 | (test_bit(DPC_RESET_HA, &ha->dpc_flags))) { | |
937 | /* Adapter initialization failed, see if we can retry | |
938 | * resetting the ha */ | |
939 | if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { | |
940 | ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; | |
941 | DEBUG2(printk("scsi%ld: recover adapter - retrying " | |
942 | "(%d) more times\n", ha->host_no, | |
943 | ha->retry_reset_ha_cnt)); | |
944 | set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
945 | status = QLA_ERROR; | |
946 | } else { | |
947 | if (ha->retry_reset_ha_cnt > 0) { | |
948 | /* Schedule another Reset HA--DPC will retry */ | |
949 | ha->retry_reset_ha_cnt--; | |
950 | DEBUG2(printk("scsi%ld: recover adapter - " | |
951 | "retry remaining %d\n", | |
952 | ha->host_no, | |
953 | ha->retry_reset_ha_cnt)); | |
954 | status = QLA_ERROR; | |
955 | } | |
956 | ||
957 | if (ha->retry_reset_ha_cnt == 0) { | |
958 | /* Recover adapter retries have been exhausted. | |
959 | * Adapter DEAD */ | |
960 | DEBUG2(printk("scsi%ld: recover adapter " | |
961 | "failed - board disabled\n", | |
962 | ha->host_no)); | |
963 | qla4xxx_flush_active_srbs(ha); | |
964 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
965 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
966 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, | |
967 | &ha->dpc_flags); | |
968 | status = QLA_ERROR; | |
969 | } | |
970 | } | |
971 | } else { | |
972 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
973 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags); | |
974 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
975 | } | |
976 | ||
977 | ha->adapter_error_count++; | |
978 | ||
979 | if (status == QLA_SUCCESS) | |
980 | qla4xxx_enable_intrs(ha); | |
981 | ||
982 | DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no)); | |
983 | return status; | |
984 | } | |
985 | ||
986 | /** | |
987 | * qla4xxx_do_dpc - dpc routine | |
988 | * @data: in our case pointer to adapter structure | |
989 | * | |
990 | * This routine is a task that is schedule by the interrupt handler | |
991 | * to perform the background processing for interrupts. We put it | |
992 | * on a task queue that is consumed whenever the scheduler runs; that's | |
993 | * so you can do anything (i.e. put the process to sleep etc). In fact, | |
994 | * the mid-level tries to sleep when it reaches the driver threshold | |
995 | * "host->can_queue". This can cause a panic if we were in our interrupt code. | |
996 | **/ | |
c4028958 | 997 | static void qla4xxx_do_dpc(struct work_struct *work) |
afaf5a2d | 998 | { |
c4028958 DH |
999 | struct scsi_qla_host *ha = |
1000 | container_of(work, struct scsi_qla_host, dpc_work); | |
afaf5a2d | 1001 | struct ddb_entry *ddb_entry, *dtemp; |
477ffb9d | 1002 | int status = QLA_ERROR; |
afaf5a2d | 1003 | |
f26b9044 | 1004 | DEBUG2(printk("scsi%ld: %s: DPC handler waking up." |
477ffb9d DS |
1005 | "flags = 0x%08lx, dpc_flags = 0x%08lx ctrl_stat = 0x%08x\n", |
1006 | ha->host_no, __func__, ha->flags, ha->dpc_flags, | |
1007 | readw(&ha->reg->ctrl_status))); | |
afaf5a2d DS |
1008 | |
1009 | /* Initialization not yet finished. Don't do anything yet. */ | |
1010 | if (!test_bit(AF_INIT_DONE, &ha->flags)) | |
1011 | return; | |
1012 | ||
1013 | if (adapter_up(ha) || | |
1014 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
1015 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
1016 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) { | |
f26b9044 DS |
1017 | if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || |
1018 | test_bit(DPC_RESET_HA, &ha->dpc_flags)) | |
afaf5a2d DS |
1019 | qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); |
1020 | ||
477ffb9d | 1021 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
afaf5a2d | 1022 | uint8_t wait_time = RESET_INTR_TOV; |
afaf5a2d | 1023 | |
afaf5a2d DS |
1024 | while ((readw(&ha->reg->ctrl_status) & |
1025 | (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { | |
1026 | if (--wait_time == 0) | |
1027 | break; | |
afaf5a2d | 1028 | msleep(1000); |
afaf5a2d | 1029 | } |
afaf5a2d DS |
1030 | if (wait_time == 0) |
1031 | DEBUG2(printk("scsi%ld: %s: SR|FSR " | |
1032 | "bit not cleared-- resetting\n", | |
1033 | ha->host_no, __func__)); | |
477ffb9d DS |
1034 | qla4xxx_flush_active_srbs(ha); |
1035 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { | |
1036 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1037 | status = qla4xxx_initialize_adapter(ha, | |
1038 | PRESERVE_DDB_LIST); | |
1039 | } | |
1040 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1041 | if (status == QLA_SUCCESS) | |
1042 | qla4xxx_enable_intrs(ha); | |
afaf5a2d DS |
1043 | } |
1044 | } | |
1045 | ||
1046 | /* ---- process AEN? --- */ | |
1047 | if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) | |
1048 | qla4xxx_process_aen(ha, PROCESS_ALL_AENS); | |
1049 | ||
1050 | /* ---- Get DHCP IP Address? --- */ | |
1051 | if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) | |
1052 | qla4xxx_get_dhcp_ip_address(ha); | |
1053 | ||
1054 | /* ---- relogin device? --- */ | |
1055 | if (adapter_up(ha) && | |
1056 | test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { | |
1057 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1058 | &ha->ddb_list, list) { | |
1059 | if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && | |
1060 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
1061 | qla4xxx_relogin_device(ha, ddb_entry); | |
1062 | ||
1063 | /* | |
1064 | * If mbx cmd times out there is no point | |
1065 | * in continuing further. | |
1066 | * With large no of targets this can hang | |
1067 | * the system. | |
1068 | */ | |
1069 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
1070 | printk(KERN_WARNING "scsi%ld: %s: " | |
1071 | "need to reset hba\n", | |
1072 | ha->host_no, __func__); | |
1073 | break; | |
1074 | } | |
1075 | } | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | /** | |
1080 | * qla4xxx_free_adapter - release the adapter | |
1081 | * @ha: pointer to adapter structure | |
1082 | **/ | |
1083 | static void qla4xxx_free_adapter(struct scsi_qla_host *ha) | |
1084 | { | |
1085 | ||
1086 | if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { | |
1087 | /* Turn-off interrupts on the card. */ | |
1088 | qla4xxx_disable_intrs(ha); | |
1089 | } | |
1090 | ||
1091 | /* Kill the kernel thread for this host */ | |
1092 | if (ha->dpc_thread) | |
1093 | destroy_workqueue(ha->dpc_thread); | |
1094 | ||
1095 | /* Issue Soft Reset to put firmware in unknown state */ | |
f26b9044 | 1096 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) |
477ffb9d | 1097 | qla4xxx_hw_reset(ha); |
afaf5a2d DS |
1098 | |
1099 | /* Remove timer thread, if present */ | |
1100 | if (ha->timer_active) | |
1101 | qla4xxx_stop_timer(ha); | |
1102 | ||
afaf5a2d DS |
1103 | /* Detach interrupts */ |
1104 | if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) | |
1105 | free_irq(ha->pdev->irq, ha); | |
1106 | ||
bee4fe8e DS |
1107 | /* free extra memory */ |
1108 | qla4xxx_mem_free(ha); | |
1109 | ||
afaf5a2d DS |
1110 | pci_disable_device(ha->pdev); |
1111 | ||
1112 | } | |
1113 | ||
1114 | /*** | |
1115 | * qla4xxx_iospace_config - maps registers | |
1116 | * @ha: pointer to adapter structure | |
1117 | * | |
1118 | * This routines maps HBA's registers from the pci address space | |
1119 | * into the kernel virtual address space for memory mapped i/o. | |
1120 | **/ | |
1121 | static int qla4xxx_iospace_config(struct scsi_qla_host *ha) | |
1122 | { | |
1123 | unsigned long pio, pio_len, pio_flags; | |
1124 | unsigned long mmio, mmio_len, mmio_flags; | |
1125 | ||
1126 | pio = pci_resource_start(ha->pdev, 0); | |
1127 | pio_len = pci_resource_len(ha->pdev, 0); | |
1128 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1129 | if (pio_flags & IORESOURCE_IO) { | |
1130 | if (pio_len < MIN_IOBASE_LEN) { | |
1131 | dev_warn(&ha->pdev->dev, | |
1132 | "Invalid PCI I/O region size\n"); | |
1133 | pio = 0; | |
1134 | } | |
1135 | } else { | |
1136 | dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n"); | |
1137 | pio = 0; | |
1138 | } | |
1139 | ||
1140 | /* Use MMIO operations for all accesses. */ | |
1141 | mmio = pci_resource_start(ha->pdev, 1); | |
1142 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1143 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1144 | ||
1145 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
1146 | dev_err(&ha->pdev->dev, | |
1147 | "region #0 not an MMIO resource, aborting\n"); | |
1148 | ||
1149 | goto iospace_error_exit; | |
1150 | } | |
1151 | if (mmio_len < MIN_IOBASE_LEN) { | |
1152 | dev_err(&ha->pdev->dev, | |
1153 | "Invalid PCI mem region size, aborting\n"); | |
1154 | goto iospace_error_exit; | |
1155 | } | |
1156 | ||
1157 | if (pci_request_regions(ha->pdev, DRIVER_NAME)) { | |
1158 | dev_warn(&ha->pdev->dev, | |
1159 | "Failed to reserve PIO/MMIO regions\n"); | |
1160 | ||
1161 | goto iospace_error_exit; | |
1162 | } | |
1163 | ||
1164 | ha->pio_address = pio; | |
1165 | ha->pio_length = pio_len; | |
1166 | ha->reg = ioremap(mmio, MIN_IOBASE_LEN); | |
1167 | if (!ha->reg) { | |
1168 | dev_err(&ha->pdev->dev, | |
1169 | "cannot remap MMIO, aborting\n"); | |
1170 | ||
1171 | goto iospace_error_exit; | |
1172 | } | |
1173 | ||
1174 | return 0; | |
1175 | ||
1176 | iospace_error_exit: | |
1177 | return -ENOMEM; | |
1178 | } | |
1179 | ||
1180 | /** | |
1181 | * qla4xxx_probe_adapter - callback function to probe HBA | |
1182 | * @pdev: pointer to pci_dev structure | |
1183 | * @pci_device_id: pointer to pci_device entry | |
1184 | * | |
1185 | * This routine will probe for Qlogic 4xxx iSCSI host adapters. | |
1186 | * It returns zero if successful. It also initializes all data necessary for | |
1187 | * the driver. | |
1188 | **/ | |
1189 | static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, | |
1190 | const struct pci_device_id *ent) | |
1191 | { | |
1192 | int ret = -ENODEV, status; | |
1193 | struct Scsi_Host *host; | |
1194 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
1195 | uint8_t init_retry_count = 0; |
1196 | char buf[34]; | |
1197 | ||
1198 | if (pci_enable_device(pdev)) | |
1199 | return -1; | |
1200 | ||
1201 | host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); | |
1202 | if (host == NULL) { | |
1203 | printk(KERN_WARNING | |
1204 | "qla4xxx: Couldn't allocate host from scsi layer!\n"); | |
1205 | goto probe_disable_device; | |
1206 | } | |
1207 | ||
1208 | /* Clear our data area */ | |
1209 | ha = (struct scsi_qla_host *) host->hostdata; | |
1210 | memset(ha, 0, sizeof(*ha)); | |
1211 | ||
1212 | /* Save the information from PCI BIOS. */ | |
1213 | ha->pdev = pdev; | |
1214 | ha->host = host; | |
1215 | ha->host_no = host->host_no; | |
1216 | ||
1217 | /* Configure PCI I/O space. */ | |
1218 | ret = qla4xxx_iospace_config(ha); | |
1219 | if (ret) | |
1220 | goto probe_failed; | |
1221 | ||
1222 | dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n", | |
1223 | pdev->device, pdev->irq, ha->reg); | |
1224 | ||
1225 | qla4xxx_config_dma_addressing(ha); | |
1226 | ||
1227 | /* Initialize lists and spinlocks. */ | |
1228 | INIT_LIST_HEAD(&ha->ddb_list); | |
1229 | INIT_LIST_HEAD(&ha->free_srb_q); | |
1230 | ||
1231 | mutex_init(&ha->mbox_sem); | |
afaf5a2d DS |
1232 | |
1233 | spin_lock_init(&ha->hardware_lock); | |
afaf5a2d DS |
1234 | |
1235 | /* Allocate dma buffers */ | |
1236 | if (qla4xxx_mem_alloc(ha)) { | |
1237 | dev_warn(&ha->pdev->dev, | |
1238 | "[ERROR] Failed to allocate memory for adapter\n"); | |
1239 | ||
1240 | ret = -ENOMEM; | |
1241 | goto probe_failed; | |
1242 | } | |
1243 | ||
1244 | /* | |
1245 | * Initialize the Host adapter request/response queues and | |
1246 | * firmware | |
1247 | * NOTE: interrupts enabled upon successful completion | |
1248 | */ | |
1249 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1250 | while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) { | |
1251 | DEBUG2(printk("scsi: %s: retrying adapter initialization " | |
1252 | "(%d)\n", __func__, init_retry_count)); | |
1253 | qla4xxx_soft_reset(ha); | |
1254 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1255 | } | |
1256 | if (status == QLA_ERROR) { | |
1257 | dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n"); | |
1258 | ||
1259 | ret = -ENODEV; | |
1260 | goto probe_failed; | |
1261 | } | |
1262 | ||
1263 | host->cmd_per_lun = 3; | |
1264 | host->max_channel = 0; | |
1265 | host->max_lun = MAX_LUNS - 1; | |
1266 | host->max_id = MAX_TARGETS; | |
1267 | host->max_cmd_len = IOCB_MAX_CDB_LEN; | |
1268 | host->can_queue = MAX_SRBS ; | |
1269 | host->transportt = qla4xxx_scsi_transport; | |
1270 | ||
1271 | ret = scsi_init_shared_tag_map(host, MAX_SRBS); | |
1272 | if (ret) { | |
898eb71c | 1273 | dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed\n"); |
afaf5a2d DS |
1274 | goto probe_failed; |
1275 | } | |
1276 | ||
1277 | /* Startup the kernel thread for this host adapter. */ | |
1278 | DEBUG2(printk("scsi: %s: Starting kernel thread for " | |
1279 | "qla4xxx_dpc\n", __func__)); | |
1280 | sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); | |
1281 | ha->dpc_thread = create_singlethread_workqueue(buf); | |
1282 | if (!ha->dpc_thread) { | |
1283 | dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n"); | |
1284 | ret = -ENODEV; | |
1285 | goto probe_failed; | |
1286 | } | |
c4028958 | 1287 | INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); |
afaf5a2d DS |
1288 | |
1289 | ret = request_irq(pdev->irq, qla4xxx_intr_handler, | |
38515e90 | 1290 | IRQF_DISABLED | IRQF_SHARED, "qla4xxx", ha); |
afaf5a2d DS |
1291 | if (ret) { |
1292 | dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d" | |
1293 | " already in use.\n", pdev->irq); | |
1294 | goto probe_failed; | |
1295 | } | |
1296 | set_bit(AF_IRQ_ATTACHED, &ha->flags); | |
1297 | host->irq = pdev->irq; | |
1298 | DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq)); | |
1299 | ||
1300 | qla4xxx_enable_intrs(ha); | |
1301 | ||
1302 | /* Start timer thread. */ | |
1303 | qla4xxx_start_timer(ha, qla4xxx_timer, 1); | |
1304 | ||
1305 | set_bit(AF_INIT_DONE, &ha->flags); | |
1306 | ||
1307 | pci_set_drvdata(pdev, ha); | |
1308 | ||
1309 | ret = scsi_add_host(host, &pdev->dev); | |
1310 | if (ret) | |
1311 | goto probe_failed; | |
1312 | ||
afaf5a2d DS |
1313 | printk(KERN_INFO |
1314 | " QLogic iSCSI HBA Driver version: %s\n" | |
1315 | " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", | |
1316 | qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), | |
1317 | ha->host_no, ha->firmware_version[0], ha->firmware_version[1], | |
1318 | ha->patch_number, ha->build_number); | |
921601b7 | 1319 | scsi_scan_host(host); |
afaf5a2d DS |
1320 | return 0; |
1321 | ||
afaf5a2d DS |
1322 | probe_failed: |
1323 | qla4xxx_free_adapter(ha); | |
1324 | scsi_host_put(ha->host); | |
1325 | ||
1326 | probe_disable_device: | |
1327 | pci_disable_device(pdev); | |
1328 | ||
1329 | return ret; | |
1330 | } | |
1331 | ||
1332 | /** | |
1333 | * qla4xxx_remove_adapter - calback function to remove adapter. | |
1334 | * @pci_dev: PCI device pointer | |
1335 | **/ | |
1336 | static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) | |
1337 | { | |
1338 | struct scsi_qla_host *ha; | |
1339 | ||
1340 | ha = pci_get_drvdata(pdev); | |
1341 | ||
bee4fe8e DS |
1342 | qla4xxx_disable_intrs(ha); |
1343 | ||
1344 | while (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) | |
1345 | ssleep(1); | |
1346 | ||
afaf5a2d DS |
1347 | /* remove devs from iscsi_sessions to scsi_devices */ |
1348 | qla4xxx_free_ddb_list(ha); | |
1349 | ||
1350 | scsi_remove_host(ha->host); | |
1351 | ||
1352 | qla4xxx_free_adapter(ha); | |
1353 | ||
1354 | scsi_host_put(ha->host); | |
1355 | ||
1356 | pci_set_drvdata(pdev, NULL); | |
1357 | } | |
1358 | ||
1359 | /** | |
1360 | * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. | |
1361 | * @ha: HA context | |
1362 | * | |
1363 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1364 | * supported addressing method. | |
1365 | */ | |
47975477 | 1366 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) |
afaf5a2d DS |
1367 | { |
1368 | int retval; | |
1369 | ||
1370 | /* Update our PCI device dma_mask for full 64 bit mask */ | |
1371 | if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { | |
1372 | if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) { | |
1373 | dev_dbg(&ha->pdev->dev, | |
1374 | "Failed to set 64 bit PCI consistent mask; " | |
1375 | "using 32 bit.\n"); | |
1376 | retval = pci_set_consistent_dma_mask(ha->pdev, | |
1377 | DMA_32BIT_MASK); | |
1378 | } | |
1379 | } else | |
1380 | retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); | |
1381 | } | |
1382 | ||
1383 | static int qla4xxx_slave_alloc(struct scsi_device *sdev) | |
1384 | { | |
1385 | struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); | |
1386 | struct ddb_entry *ddb = sess->dd_data; | |
1387 | ||
1388 | sdev->hostdata = ddb; | |
1389 | sdev->tagged_supported = 1; | |
1390 | scsi_activate_tcq(sdev, sdev->host->can_queue); | |
1391 | return 0; | |
1392 | } | |
1393 | ||
1394 | static int qla4xxx_slave_configure(struct scsi_device *sdev) | |
1395 | { | |
1396 | sdev->tagged_supported = 1; | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | static void qla4xxx_slave_destroy(struct scsi_device *sdev) | |
1401 | { | |
1402 | scsi_deactivate_tcq(sdev, 1); | |
1403 | } | |
1404 | ||
1405 | /** | |
1406 | * qla4xxx_del_from_active_array - returns an active srb | |
1407 | * @ha: Pointer to host adapter structure. | |
1408 | * @index: index into to the active_array | |
1409 | * | |
1410 | * This routine removes and returns the srb at the specified index | |
1411 | **/ | |
1412 | struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index) | |
1413 | { | |
1414 | struct srb *srb = NULL; | |
1415 | struct scsi_cmnd *cmd; | |
1416 | ||
1417 | if (!(cmd = scsi_host_find_tag(ha->host, index))) | |
1418 | return srb; | |
1419 | ||
1420 | if (!(srb = (struct srb *)cmd->host_scribble)) | |
1421 | return srb; | |
1422 | ||
1423 | /* update counters */ | |
1424 | if (srb->flags & SRB_DMA_VALID) { | |
1425 | ha->req_q_count += srb->iocb_cnt; | |
1426 | ha->iocb_cnt -= srb->iocb_cnt; | |
1427 | if (srb->cmd) | |
1428 | srb->cmd->host_scribble = NULL; | |
1429 | } | |
1430 | return srb; | |
1431 | } | |
1432 | ||
afaf5a2d DS |
1433 | /** |
1434 | * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware | |
1435 | * @ha: actual ha whose done queue will contain the comd returned by firmware. | |
1436 | * @cmd: Scsi Command to wait on. | |
1437 | * | |
1438 | * This routine waits for the command to be returned by the Firmware | |
1439 | * for some max time. | |
1440 | **/ | |
1441 | static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, | |
1442 | struct scsi_cmnd *cmd) | |
1443 | { | |
1444 | int done = 0; | |
1445 | struct srb *rp; | |
1446 | uint32_t max_wait_time = EH_WAIT_CMD_TOV; | |
1447 | ||
1448 | do { | |
1449 | /* Checking to see if its returned to OS */ | |
1450 | rp = (struct srb *) cmd->SCp.ptr; | |
1451 | if (rp == NULL) { | |
1452 | done++; | |
1453 | break; | |
1454 | } | |
1455 | ||
1456 | msleep(2000); | |
1457 | } while (max_wait_time--); | |
1458 | ||
1459 | return done; | |
1460 | } | |
1461 | ||
1462 | /** | |
1463 | * qla4xxx_wait_for_hba_online - waits for HBA to come online | |
1464 | * @ha: Pointer to host adapter structure | |
1465 | **/ | |
1466 | static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) | |
1467 | { | |
1468 | unsigned long wait_online; | |
1469 | ||
1470 | wait_online = jiffies + (30 * HZ); | |
1471 | while (time_before(jiffies, wait_online)) { | |
1472 | ||
1473 | if (adapter_up(ha)) | |
1474 | return QLA_SUCCESS; | |
1475 | else if (ha->retry_reset_ha_cnt == 0) | |
1476 | return QLA_ERROR; | |
1477 | ||
1478 | msleep(2000); | |
1479 | } | |
1480 | ||
1481 | return QLA_ERROR; | |
1482 | } | |
1483 | ||
1484 | /** | |
1485 | * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish. | |
1486 | * @ha: pointer to to HBA | |
1487 | * @t: target id | |
1488 | * @l: lun id | |
1489 | * | |
1490 | * This function waits for all outstanding commands to a lun to complete. It | |
1491 | * returns 0 if all pending commands are returned and 1 otherwise. | |
1492 | **/ | |
1493 | static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha, | |
1494 | int t, int l) | |
1495 | { | |
1496 | int cnt; | |
1497 | int status = 0; | |
1498 | struct scsi_cmnd *cmd; | |
1499 | ||
1500 | /* | |
1501 | * Waiting for all commands for the designated target in the active | |
1502 | * array | |
1503 | */ | |
1504 | for (cnt = 0; cnt < ha->host->can_queue; cnt++) { | |
1505 | cmd = scsi_host_find_tag(ha->host, cnt); | |
1506 | if (cmd && cmd->device->id == t && cmd->device->lun == l) { | |
1507 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { | |
1508 | status++; | |
1509 | break; | |
1510 | } | |
1511 | } | |
1512 | } | |
1513 | return status; | |
1514 | } | |
1515 | ||
1516 | /** | |
1517 | * qla4xxx_eh_device_reset - callback for target reset. | |
1518 | * @cmd: Pointer to Linux's SCSI command structure | |
1519 | * | |
1520 | * This routine is called by the Linux OS to reset all luns on the | |
1521 | * specified target. | |
1522 | **/ | |
1523 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
1524 | { | |
1525 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
1526 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
1527 | struct srb *sp; | |
1528 | int ret = FAILED, stat; | |
1529 | ||
1530 | sp = (struct srb *) cmd->SCp.ptr; | |
1531 | if (!sp || !ddb_entry) | |
1532 | return ret; | |
1533 | ||
1534 | dev_info(&ha->pdev->dev, | |
1535 | "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, | |
1536 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1537 | ||
1538 | DEBUG2(printk(KERN_INFO | |
1539 | "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," | |
1540 | "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, | |
1541 | cmd, jiffies, cmd->timeout_per_command / HZ, | |
1542 | ha->dpc_flags, cmd->result, cmd->allowed)); | |
1543 | ||
1544 | /* FIXME: wait for hba to go online */ | |
1545 | stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); | |
1546 | if (stat != QLA_SUCCESS) { | |
1547 | dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat); | |
1548 | goto eh_dev_reset_done; | |
1549 | } | |
1550 | ||
1551 | /* Send marker. */ | |
1552 | ha->marker_needed = 1; | |
1553 | ||
1554 | /* | |
1555 | * If we are coming down the EH path, wait for all commands to complete | |
1556 | * for the device. | |
1557 | */ | |
1558 | if (cmd->device->host->shost_state == SHOST_RECOVERY) { | |
1559 | if (qla4xxx_eh_wait_for_active_target_commands(ha, | |
1560 | cmd->device->id, | |
1561 | cmd->device->lun)){ | |
1562 | dev_info(&ha->pdev->dev, | |
1563 | "DEVICE RESET FAILED - waiting for " | |
1564 | "commands.\n"); | |
1565 | goto eh_dev_reset_done; | |
1566 | } | |
1567 | } | |
1568 | ||
1569 | dev_info(&ha->pdev->dev, | |
1570 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", | |
1571 | ha->host_no, cmd->device->channel, cmd->device->id, | |
1572 | cmd->device->lun); | |
1573 | ||
1574 | ret = SUCCESS; | |
1575 | ||
1576 | eh_dev_reset_done: | |
1577 | ||
1578 | return ret; | |
1579 | } | |
1580 | ||
1581 | /** | |
1582 | * qla4xxx_eh_host_reset - kernel callback | |
1583 | * @cmd: Pointer to Linux's SCSI command structure | |
1584 | * | |
1585 | * This routine is invoked by the Linux kernel to perform fatal error | |
1586 | * recovery on the specified adapter. | |
1587 | **/ | |
1588 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
1589 | { | |
1590 | int return_status = FAILED; | |
1591 | struct scsi_qla_host *ha; | |
1592 | ||
1593 | ha = (struct scsi_qla_host *) cmd->device->host->hostdata; | |
1594 | ||
1595 | dev_info(&ha->pdev->dev, | |
1596 | "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, | |
1597 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1598 | ||
1599 | if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1600 | DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " | |
1601 | "DEAD.\n", ha->host_no, cmd->device->channel, | |
1602 | __func__)); | |
1603 | ||
1604 | return FAILED; | |
1605 | } | |
1606 | ||
50a29aec MC |
1607 | /* make sure the dpc thread is stopped while we reset the hba */ |
1608 | clear_bit(AF_ONLINE, &ha->flags); | |
1609 | flush_workqueue(ha->dpc_thread); | |
1610 | ||
1611 | if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) | |
afaf5a2d | 1612 | return_status = SUCCESS; |
afaf5a2d DS |
1613 | |
1614 | dev_info(&ha->pdev->dev, "HOST RESET %s.\n", | |
1615 | return_status == FAILED ? "FAILED" : "SUCCEDED"); | |
1616 | ||
1617 | return return_status; | |
1618 | } | |
1619 | ||
1620 | ||
1621 | static struct pci_device_id qla4xxx_pci_tbl[] = { | |
1622 | { | |
1623 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1624 | .device = PCI_DEVICE_ID_QLOGIC_ISP4010, | |
1625 | .subvendor = PCI_ANY_ID, | |
1626 | .subdevice = PCI_ANY_ID, | |
1627 | }, | |
1628 | { | |
1629 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1630 | .device = PCI_DEVICE_ID_QLOGIC_ISP4022, | |
1631 | .subvendor = PCI_ANY_ID, | |
1632 | .subdevice = PCI_ANY_ID, | |
1633 | }, | |
d915058f DS |
1634 | { |
1635 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1636 | .device = PCI_DEVICE_ID_QLOGIC_ISP4032, | |
1637 | .subvendor = PCI_ANY_ID, | |
1638 | .subdevice = PCI_ANY_ID, | |
1639 | }, | |
afaf5a2d DS |
1640 | {0, 0}, |
1641 | }; | |
1642 | MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); | |
1643 | ||
47975477 | 1644 | static struct pci_driver qla4xxx_pci_driver = { |
afaf5a2d DS |
1645 | .name = DRIVER_NAME, |
1646 | .id_table = qla4xxx_pci_tbl, | |
1647 | .probe = qla4xxx_probe_adapter, | |
1648 | .remove = qla4xxx_remove_adapter, | |
1649 | }; | |
1650 | ||
1651 | static int __init qla4xxx_module_init(void) | |
1652 | { | |
1653 | int ret; | |
1654 | ||
1655 | /* Allocate cache for SRBs. */ | |
1656 | srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, | |
20c2df83 | 1657 | SLAB_HWCACHE_ALIGN, NULL); |
afaf5a2d DS |
1658 | if (srb_cachep == NULL) { |
1659 | printk(KERN_ERR | |
1660 | "%s: Unable to allocate SRB cache..." | |
1661 | "Failing load!\n", DRIVER_NAME); | |
1662 | ret = -ENOMEM; | |
1663 | goto no_srp_cache; | |
1664 | } | |
1665 | ||
1666 | /* Derive version string. */ | |
1667 | strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); | |
11010fec | 1668 | if (ql4xextended_error_logging) |
afaf5a2d DS |
1669 | strcat(qla4xxx_version_str, "-debug"); |
1670 | ||
1671 | qla4xxx_scsi_transport = | |
1672 | iscsi_register_transport(&qla4xxx_iscsi_transport); | |
1673 | if (!qla4xxx_scsi_transport){ | |
1674 | ret = -ENODEV; | |
1675 | goto release_srb_cache; | |
1676 | } | |
1677 | ||
afaf5a2d DS |
1678 | ret = pci_register_driver(&qla4xxx_pci_driver); |
1679 | if (ret) | |
1680 | goto unregister_transport; | |
1681 | ||
1682 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
1683 | return 0; | |
5ae16db3 | 1684 | |
afaf5a2d DS |
1685 | unregister_transport: |
1686 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1687 | release_srb_cache: | |
1688 | kmem_cache_destroy(srb_cachep); | |
1689 | no_srp_cache: | |
1690 | return ret; | |
1691 | } | |
1692 | ||
1693 | static void __exit qla4xxx_module_exit(void) | |
1694 | { | |
477ffb9d | 1695 | ql4_mod_unload = 1; |
afaf5a2d DS |
1696 | pci_unregister_driver(&qla4xxx_pci_driver); |
1697 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1698 | kmem_cache_destroy(srb_cachep); | |
1699 | } | |
1700 | ||
1701 | module_init(qla4xxx_module_init); | |
1702 | module_exit(qla4xxx_module_exit); | |
1703 | ||
1704 | MODULE_AUTHOR("QLogic Corporation"); | |
1705 | MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); | |
1706 | MODULE_LICENSE("GPL"); | |
1707 | MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |