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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_conn_stop(struct iscsi_cls_conn *conn, int flag); |
67 | static int qla4xxx_conn_start(struct iscsi_cls_conn *conn); | |
68 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); | |
69 | ||
70 | /* | |
71 | * SCSI host template entry points | |
72 | */ | |
73 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
74 | void (*done) (struct scsi_cmnd *)); | |
75 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); | |
76 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); | |
77 | static int qla4xxx_slave_alloc(struct scsi_device *device); | |
78 | static int qla4xxx_slave_configure(struct scsi_device *device); | |
79 | static void qla4xxx_slave_destroy(struct scsi_device *sdev); | |
80 | ||
81 | static struct scsi_host_template qla4xxx_driver_template = { | |
82 | .module = THIS_MODULE, | |
83 | .name = DRIVER_NAME, | |
84 | .proc_name = DRIVER_NAME, | |
85 | .queuecommand = qla4xxx_queuecommand, | |
86 | ||
87 | .eh_device_reset_handler = qla4xxx_eh_device_reset, | |
88 | .eh_host_reset_handler = qla4xxx_eh_host_reset, | |
89 | ||
90 | .slave_configure = qla4xxx_slave_configure, | |
91 | .slave_alloc = qla4xxx_slave_alloc, | |
92 | .slave_destroy = qla4xxx_slave_destroy, | |
93 | ||
94 | .this_id = -1, | |
95 | .cmd_per_lun = 3, | |
96 | .use_clustering = ENABLE_CLUSTERING, | |
97 | .sg_tablesize = SG_ALL, | |
98 | ||
99 | .max_sectors = 0xFFFF, | |
100 | }; | |
101 | ||
102 | static struct iscsi_transport qla4xxx_iscsi_transport = { | |
103 | .owner = THIS_MODULE, | |
104 | .name = DRIVER_NAME, | |
d8196ed2 MC |
105 | .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | |
106 | CAP_DATA_PATH_OFFLOAD, | |
aa1e93a2 MC |
107 | .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
108 | ISCSI_TARGET_NAME | ISCSI_TPGT, | |
8ad5781a | 109 | .host_param_mask = ISCSI_HOST_HWADDRESS | |
22236961 | 110 | ISCSI_HOST_IPADDRESS | |
8ad5781a | 111 | ISCSI_HOST_INITIATOR_NAME, |
afaf5a2d DS |
112 | .sessiondata_size = sizeof(struct ddb_entry), |
113 | .host_template = &qla4xxx_driver_template, | |
114 | ||
115 | .tgt_dscvr = qla4xxx_tgt_dscvr, | |
116 | .get_conn_param = qla4xxx_conn_get_param, | |
117 | .get_session_param = qla4xxx_sess_get_param, | |
aa1e93a2 | 118 | .get_host_param = qla4xxx_host_get_param, |
afaf5a2d DS |
119 | .start_conn = qla4xxx_conn_start, |
120 | .stop_conn = qla4xxx_conn_stop, | |
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 | ||
131 | DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) " | |
132 | "secs exhausted, marking device DEAD.\n", ha->host_no, | |
133 | __func__, ddb_entry->fw_ddb_index, | |
134 | ha->port_down_retry_count)); | |
135 | ||
136 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); | |
137 | ||
138 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = " | |
139 | "0x%lx\n", ha->host_no, __func__, ha->dpc_flags)); | |
140 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
141 | } | |
142 | ||
143 | static int qla4xxx_conn_start(struct iscsi_cls_conn *conn) | |
144 | { | |
145 | struct iscsi_cls_session *session; | |
146 | struct ddb_entry *ddb_entry; | |
147 | ||
148 | session = iscsi_dev_to_session(conn->dev.parent); | |
149 | ddb_entry = session->dd_data; | |
150 | ||
151 | DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n", | |
152 | ddb_entry->ha->host_no, __func__, | |
153 | ddb_entry->fw_ddb_index)); | |
154 | iscsi_unblock_session(session); | |
155 | return 0; | |
156 | } | |
157 | ||
158 | static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag) | |
159 | { | |
160 | struct iscsi_cls_session *session; | |
161 | struct ddb_entry *ddb_entry; | |
162 | ||
163 | session = iscsi_dev_to_session(conn->dev.parent); | |
164 | ddb_entry = session->dd_data; | |
165 | ||
166 | DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n", | |
167 | ddb_entry->ha->host_no, __func__, | |
168 | ddb_entry->fw_ddb_index)); | |
169 | if (flag == STOP_CONN_RECOVER) | |
170 | iscsi_block_session(session); | |
171 | else | |
172 | printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag); | |
173 | } | |
174 | ||
aa1e93a2 MC |
175 | static ssize_t format_addr(char *buf, const unsigned char *addr, int len) |
176 | { | |
177 | int i; | |
178 | char *cp = buf; | |
179 | ||
180 | for (i = 0; i < len; i++) | |
181 | cp += sprintf(cp, "%02x%c", addr[i], | |
182 | i == (len - 1) ? '\n' : ':'); | |
183 | return cp - buf; | |
184 | } | |
185 | ||
186 | ||
187 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, | |
188 | enum iscsi_host_param param, char *buf) | |
189 | { | |
190 | struct scsi_qla_host *ha = to_qla_host(shost); | |
191 | int len; | |
192 | ||
193 | switch (param) { | |
194 | case ISCSI_HOST_PARAM_HWADDRESS: | |
195 | len = format_addr(buf, ha->my_mac, MAC_ADDR_LEN); | |
8ad5781a | 196 | break; |
22236961 MC |
197 | case ISCSI_HOST_PARAM_IPADDRESS: |
198 | len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], | |
199 | ha->ip_address[1], ha->ip_address[2], | |
200 | ha->ip_address[3]); | |
201 | break; | |
8ad5781a | 202 | case ISCSI_HOST_PARAM_INITIATOR_NAME: |
22236961 | 203 | len = sprintf(buf, "%s\n", ha->name_string); |
aa1e93a2 MC |
204 | break; |
205 | default: | |
206 | return -ENOSYS; | |
207 | } | |
208 | ||
209 | return len; | |
210 | } | |
211 | ||
afaf5a2d DS |
212 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
213 | enum iscsi_param param, char *buf) | |
214 | { | |
215 | struct ddb_entry *ddb_entry = sess->dd_data; | |
216 | int len; | |
217 | ||
218 | switch (param) { | |
219 | case ISCSI_PARAM_TARGET_NAME: | |
220 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
221 | ddb_entry->iscsi_name); | |
222 | break; | |
223 | case ISCSI_PARAM_TPGT: | |
224 | len = sprintf(buf, "%u\n", ddb_entry->tpgt); | |
225 | break; | |
226 | default: | |
227 | return -ENOSYS; | |
228 | } | |
229 | ||
230 | return len; | |
231 | } | |
232 | ||
233 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
234 | enum iscsi_param param, char *buf) | |
235 | { | |
236 | struct iscsi_cls_session *session; | |
237 | struct ddb_entry *ddb_entry; | |
238 | int len; | |
239 | ||
240 | session = iscsi_dev_to_session(conn->dev.parent); | |
241 | ddb_entry = session->dd_data; | |
242 | ||
243 | switch (param) { | |
244 | case ISCSI_PARAM_CONN_PORT: | |
245 | len = sprintf(buf, "%hu\n", ddb_entry->port); | |
246 | break; | |
247 | case ISCSI_PARAM_CONN_ADDRESS: | |
248 | /* TODO: what are the ipv6 bits */ | |
249 | len = sprintf(buf, "%u.%u.%u.%u\n", | |
250 | NIPQUAD(ddb_entry->ip_addr)); | |
251 | break; | |
252 | default: | |
253 | return -ENOSYS; | |
254 | } | |
255 | ||
256 | return len; | |
257 | } | |
258 | ||
2174a04e MC |
259 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
260 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
261 | struct sockaddr *dst_addr) | |
afaf5a2d DS |
262 | { |
263 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
264 | struct sockaddr_in *addr; |
265 | struct sockaddr_in6 *addr6; | |
266 | int ret = 0; | |
267 | ||
afaf5a2d DS |
268 | ha = (struct scsi_qla_host *) shost->hostdata; |
269 | ||
270 | switch (type) { | |
271 | case ISCSI_TGT_DSCVR_SEND_TARGETS: | |
272 | if (dst_addr->sa_family == AF_INET) { | |
273 | addr = (struct sockaddr_in *)dst_addr; | |
274 | if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, | |
275 | addr->sin_port) != QLA_SUCCESS) | |
276 | ret = -EIO; | |
277 | } else if (dst_addr->sa_family == AF_INET6) { | |
278 | /* | |
279 | * TODO: fix qla4xxx_send_tgts | |
280 | */ | |
281 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
282 | if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, | |
283 | addr6->sin6_port) != QLA_SUCCESS) | |
284 | ret = -EIO; | |
285 | } else | |
286 | ret = -ENOSYS; | |
287 | break; | |
288 | default: | |
289 | ret = -ENOSYS; | |
290 | } | |
afaf5a2d DS |
291 | return ret; |
292 | } | |
293 | ||
294 | void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) | |
295 | { | |
296 | if (!ddb_entry->sess) | |
297 | return; | |
298 | ||
299 | if (ddb_entry->conn) { | |
300 | iscsi_if_destroy_session_done(ddb_entry->conn); | |
301 | iscsi_destroy_conn(ddb_entry->conn); | |
302 | iscsi_remove_session(ddb_entry->sess); | |
303 | } | |
304 | iscsi_free_session(ddb_entry->sess); | |
305 | } | |
306 | ||
307 | int qla4xxx_add_sess(struct ddb_entry *ddb_entry) | |
308 | { | |
309 | int err; | |
310 | ||
311 | err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); | |
312 | if (err) { | |
313 | DEBUG2(printk(KERN_ERR "Could not add session.\n")); | |
314 | return err; | |
315 | } | |
316 | ||
317 | ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0); | |
318 | if (!ddb_entry->conn) { | |
319 | iscsi_remove_session(ddb_entry->sess); | |
320 | DEBUG2(printk(KERN_ERR "Could not add connection.\n")); | |
321 | return -ENOMEM; | |
322 | } | |
323 | ||
324 | ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; | |
325 | iscsi_if_create_session_done(ddb_entry->conn); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) | |
330 | { | |
331 | struct ddb_entry *ddb_entry; | |
332 | struct iscsi_cls_session *sess; | |
333 | ||
334 | sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport); | |
335 | if (!sess) | |
336 | return NULL; | |
337 | ||
338 | ddb_entry = sess->dd_data; | |
339 | memset(ddb_entry, 0, sizeof(*ddb_entry)); | |
340 | ddb_entry->ha = ha; | |
341 | ddb_entry->sess = sess; | |
342 | return ddb_entry; | |
343 | } | |
344 | ||
345 | /* | |
346 | * Timer routines | |
347 | */ | |
348 | ||
349 | static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, | |
350 | unsigned long interval) | |
351 | { | |
352 | DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", | |
353 | __func__, ha->host->host_no)); | |
354 | init_timer(&ha->timer); | |
355 | ha->timer.expires = jiffies + interval * HZ; | |
356 | ha->timer.data = (unsigned long)ha; | |
357 | ha->timer.function = (void (*)(unsigned long))func; | |
358 | add_timer(&ha->timer); | |
359 | ha->timer_active = 1; | |
360 | } | |
361 | ||
362 | static void qla4xxx_stop_timer(struct scsi_qla_host *ha) | |
363 | { | |
364 | del_timer_sync(&ha->timer); | |
365 | ha->timer_active = 0; | |
366 | } | |
367 | ||
368 | /*** | |
369 | * qla4xxx_mark_device_missing - mark a device as missing. | |
370 | * @ha: Pointer to host adapter structure. | |
371 | * @ddb_entry: Pointer to device database entry | |
372 | * | |
373 | * This routine marks a device missing and resets the relogin retry count. | |
374 | **/ | |
375 | void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, | |
376 | struct ddb_entry *ddb_entry) | |
377 | { | |
378 | atomic_set(&ddb_entry->state, DDB_STATE_MISSING); | |
379 | DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n", | |
380 | ha->host_no, ddb_entry->bus, ddb_entry->target, | |
381 | ddb_entry->fw_ddb_index)); | |
382 | iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); | |
383 | } | |
384 | ||
385 | static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, | |
386 | struct ddb_entry *ddb_entry, | |
387 | struct scsi_cmnd *cmd, | |
388 | void (*done)(struct scsi_cmnd *)) | |
389 | { | |
390 | struct srb *srb; | |
391 | ||
392 | srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
393 | if (!srb) | |
394 | return srb; | |
395 | ||
396 | atomic_set(&srb->ref_count, 1); | |
397 | srb->ha = ha; | |
398 | srb->ddb = ddb_entry; | |
399 | srb->cmd = cmd; | |
400 | srb->flags = 0; | |
401 | cmd->SCp.ptr = (void *)srb; | |
402 | cmd->scsi_done = done; | |
403 | ||
404 | return srb; | |
405 | } | |
406 | ||
407 | static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) | |
408 | { | |
409 | struct scsi_cmnd *cmd = srb->cmd; | |
410 | ||
411 | if (srb->flags & SRB_DMA_VALID) { | |
5f7186c8 | 412 | scsi_dma_unmap(cmd); |
afaf5a2d DS |
413 | srb->flags &= ~SRB_DMA_VALID; |
414 | } | |
415 | cmd->SCp.ptr = NULL; | |
416 | } | |
417 | ||
418 | void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) | |
419 | { | |
420 | struct scsi_cmnd *cmd = srb->cmd; | |
421 | ||
422 | qla4xxx_srb_free_dma(ha, srb); | |
423 | ||
424 | mempool_free(srb, ha->srb_mempool); | |
425 | ||
426 | cmd->scsi_done(cmd); | |
427 | } | |
428 | ||
429 | /** | |
430 | * qla4xxx_queuecommand - scsi layer issues scsi command to driver. | |
431 | * @cmd: Pointer to Linux's SCSI command structure | |
432 | * @done_fn: Function that the driver calls to notify the SCSI mid-layer | |
433 | * that the command has been processed. | |
434 | * | |
435 | * Remarks: | |
436 | * This routine is invoked by Linux to send a SCSI command to the driver. | |
437 | * The mid-level driver tries to ensure that queuecommand never gets | |
438 | * invoked concurrently with itself or the interrupt handler (although | |
439 | * the interrupt handler may call this routine as part of request- | |
440 | * completion handling). Unfortunely, it sometimes calls the scheduler | |
441 | * in interrupt context which is a big NO! NO!. | |
442 | **/ | |
443 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
444 | void (*done)(struct scsi_cmnd *)) | |
445 | { | |
446 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
447 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
448 | struct srb *srb; | |
449 | int rval; | |
450 | ||
451 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
452 | if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { | |
453 | cmd->result = DID_NO_CONNECT << 16; | |
454 | goto qc_fail_command; | |
455 | } | |
456 | goto qc_host_busy; | |
457 | } | |
458 | ||
477ffb9d DS |
459 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) |
460 | goto qc_host_busy; | |
461 | ||
afaf5a2d DS |
462 | spin_unlock_irq(ha->host->host_lock); |
463 | ||
464 | srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); | |
465 | if (!srb) | |
466 | goto qc_host_busy_lock; | |
467 | ||
468 | rval = qla4xxx_send_command_to_isp(ha, srb); | |
469 | if (rval != QLA_SUCCESS) | |
470 | goto qc_host_busy_free_sp; | |
471 | ||
472 | spin_lock_irq(ha->host->host_lock); | |
473 | return 0; | |
474 | ||
475 | qc_host_busy_free_sp: | |
476 | qla4xxx_srb_free_dma(ha, srb); | |
477 | mempool_free(srb, ha->srb_mempool); | |
478 | ||
479 | qc_host_busy_lock: | |
480 | spin_lock_irq(ha->host->host_lock); | |
481 | ||
482 | qc_host_busy: | |
483 | return SCSI_MLQUEUE_HOST_BUSY; | |
484 | ||
485 | qc_fail_command: | |
486 | done(cmd); | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | /** | |
492 | * qla4xxx_mem_free - frees memory allocated to adapter | |
493 | * @ha: Pointer to host adapter structure. | |
494 | * | |
495 | * Frees memory previously allocated by qla4xxx_mem_alloc | |
496 | **/ | |
497 | static void qla4xxx_mem_free(struct scsi_qla_host *ha) | |
498 | { | |
499 | if (ha->queues) | |
500 | dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, | |
501 | ha->queues_dma); | |
502 | ||
503 | ha->queues_len = 0; | |
504 | ha->queues = NULL; | |
505 | ha->queues_dma = 0; | |
506 | ha->request_ring = NULL; | |
507 | ha->request_dma = 0; | |
508 | ha->response_ring = NULL; | |
509 | ha->response_dma = 0; | |
510 | ha->shadow_regs = NULL; | |
511 | ha->shadow_regs_dma = 0; | |
512 | ||
513 | /* Free srb pool. */ | |
514 | if (ha->srb_mempool) | |
515 | mempool_destroy(ha->srb_mempool); | |
516 | ||
517 | ha->srb_mempool = NULL; | |
518 | ||
519 | /* release io space registers */ | |
520 | if (ha->reg) | |
521 | iounmap(ha->reg); | |
522 | pci_release_regions(ha->pdev); | |
523 | } | |
524 | ||
525 | /** | |
526 | * qla4xxx_mem_alloc - allocates memory for use by adapter. | |
527 | * @ha: Pointer to host adapter structure | |
528 | * | |
529 | * Allocates DMA memory for request and response queues. Also allocates memory | |
530 | * for srbs. | |
531 | **/ | |
532 | static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) | |
533 | { | |
534 | unsigned long align; | |
535 | ||
536 | /* Allocate contiguous block of DMA memory for queues. */ | |
537 | ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
538 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + | |
539 | sizeof(struct shadow_regs) + | |
540 | MEM_ALIGN_VALUE + | |
541 | (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); | |
542 | ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, | |
543 | &ha->queues_dma, GFP_KERNEL); | |
544 | if (ha->queues == NULL) { | |
545 | dev_warn(&ha->pdev->dev, | |
546 | "Memory Allocation failed - queues.\n"); | |
547 | ||
548 | goto mem_alloc_error_exit; | |
549 | } | |
550 | memset(ha->queues, 0, ha->queues_len); | |
551 | ||
552 | /* | |
553 | * As per RISC alignment requirements -- the bus-address must be a | |
554 | * multiple of the request-ring size (in bytes). | |
555 | */ | |
556 | align = 0; | |
557 | if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) | |
558 | align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & | |
559 | (MEM_ALIGN_VALUE - 1)); | |
560 | ||
561 | /* Update request and response queue pointers. */ | |
562 | ha->request_dma = ha->queues_dma + align; | |
563 | ha->request_ring = (struct queue_entry *) (ha->queues + align); | |
564 | ha->response_dma = ha->queues_dma + align + | |
565 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); | |
566 | ha->response_ring = (struct queue_entry *) (ha->queues + align + | |
567 | (REQUEST_QUEUE_DEPTH * | |
568 | QUEUE_SIZE)); | |
569 | ha->shadow_regs_dma = ha->queues_dma + align + | |
570 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
571 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); | |
572 | ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + | |
573 | (REQUEST_QUEUE_DEPTH * | |
574 | QUEUE_SIZE) + | |
575 | (RESPONSE_QUEUE_DEPTH * | |
576 | QUEUE_SIZE)); | |
577 | ||
578 | /* Allocate memory for srb pool. */ | |
579 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
580 | mempool_free_slab, srb_cachep); | |
581 | if (ha->srb_mempool == NULL) { | |
582 | dev_warn(&ha->pdev->dev, | |
583 | "Memory Allocation failed - SRB Pool.\n"); | |
584 | ||
585 | goto mem_alloc_error_exit; | |
586 | } | |
587 | ||
588 | return QLA_SUCCESS; | |
589 | ||
590 | mem_alloc_error_exit: | |
591 | qla4xxx_mem_free(ha); | |
592 | return QLA_ERROR; | |
593 | } | |
594 | ||
595 | /** | |
596 | * qla4xxx_timer - checks every second for work to do. | |
597 | * @ha: Pointer to host adapter structure. | |
598 | **/ | |
599 | static void qla4xxx_timer(struct scsi_qla_host *ha) | |
600 | { | |
601 | struct ddb_entry *ddb_entry, *dtemp; | |
602 | int start_dpc = 0; | |
603 | ||
604 | /* Search for relogin's to time-out and port down retry. */ | |
605 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
606 | /* Count down time between sending relogins */ | |
607 | if (adapter_up(ha) && | |
608 | !test_bit(DF_RELOGIN, &ddb_entry->flags) && | |
609 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
610 | if (atomic_read(&ddb_entry->retry_relogin_timer) != | |
611 | INVALID_ENTRY) { | |
612 | if (atomic_read(&ddb_entry->retry_relogin_timer) | |
613 | == 0) { | |
614 | atomic_set(&ddb_entry-> | |
615 | retry_relogin_timer, | |
616 | INVALID_ENTRY); | |
617 | set_bit(DPC_RELOGIN_DEVICE, | |
618 | &ha->dpc_flags); | |
619 | set_bit(DF_RELOGIN, &ddb_entry->flags); | |
620 | DEBUG2(printk("scsi%ld: %s: index [%d]" | |
621 | " login device\n", | |
622 | ha->host_no, __func__, | |
623 | ddb_entry->fw_ddb_index)); | |
624 | } else | |
625 | atomic_dec(&ddb_entry-> | |
626 | retry_relogin_timer); | |
627 | } | |
628 | } | |
629 | ||
630 | /* Wait for relogin to timeout */ | |
631 | if (atomic_read(&ddb_entry->relogin_timer) && | |
632 | (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { | |
633 | /* | |
634 | * If the relogin times out and the device is | |
635 | * still NOT ONLINE then try and relogin again. | |
636 | */ | |
637 | if (atomic_read(&ddb_entry->state) != | |
638 | DDB_STATE_ONLINE && | |
639 | ddb_entry->fw_ddb_device_state == | |
640 | DDB_DS_SESSION_FAILED) { | |
641 | /* Reset retry relogin timer */ | |
642 | atomic_inc(&ddb_entry->relogin_retry_count); | |
643 | DEBUG2(printk("scsi%ld: index[%d] relogin" | |
644 | " timed out-retrying" | |
645 | " relogin (%d)\n", | |
646 | ha->host_no, | |
647 | ddb_entry->fw_ddb_index, | |
648 | atomic_read(&ddb_entry-> | |
649 | relogin_retry_count)) | |
650 | ); | |
651 | start_dpc++; | |
652 | DEBUG(printk("scsi%ld:%d:%d: index [%d] " | |
653 | "initate relogin after" | |
654 | " %d seconds\n", | |
655 | ha->host_no, ddb_entry->bus, | |
656 | ddb_entry->target, | |
657 | ddb_entry->fw_ddb_index, | |
658 | ddb_entry->default_time2wait + 4) | |
659 | ); | |
660 | ||
661 | atomic_set(&ddb_entry->retry_relogin_timer, | |
662 | ddb_entry->default_time2wait + 4); | |
663 | } | |
664 | } | |
665 | } | |
666 | ||
667 | /* Check for heartbeat interval. */ | |
668 | if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && | |
669 | ha->heartbeat_interval != 0) { | |
670 | ha->seconds_since_last_heartbeat++; | |
671 | if (ha->seconds_since_last_heartbeat > | |
672 | ha->heartbeat_interval + 2) | |
673 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
674 | } | |
675 | ||
676 | ||
677 | /* Wakeup the dpc routine for this adapter, if needed. */ | |
678 | if ((start_dpc || | |
679 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
680 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || | |
681 | test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || | |
682 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || | |
683 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
684 | test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || | |
685 | test_bit(DPC_AEN, &ha->dpc_flags)) && | |
686 | ha->dpc_thread) { | |
687 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" | |
688 | " - dpc flags = 0x%lx\n", | |
689 | ha->host_no, __func__, ha->dpc_flags)); | |
690 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
691 | } | |
692 | ||
693 | /* Reschedule timer thread to call us back in one second */ | |
694 | mod_timer(&ha->timer, jiffies + HZ); | |
695 | ||
696 | DEBUG2(ha->seconds_since_last_intr++); | |
697 | } | |
698 | ||
699 | /** | |
700 | * qla4xxx_cmd_wait - waits for all outstanding commands to complete | |
701 | * @ha: Pointer to host adapter structure. | |
702 | * | |
703 | * This routine stalls the driver until all outstanding commands are returned. | |
704 | * Caller must release the Hardware Lock prior to calling this routine. | |
705 | **/ | |
706 | static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) | |
707 | { | |
708 | uint32_t index = 0; | |
709 | int stat = QLA_SUCCESS; | |
710 | unsigned long flags; | |
711 | struct scsi_cmnd *cmd; | |
712 | int wait_cnt = WAIT_CMD_TOV; /* | |
713 | * Initialized for 30 seconds as we | |
714 | * expect all commands to retuned | |
715 | * ASAP. | |
716 | */ | |
717 | ||
718 | while (wait_cnt) { | |
719 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
720 | /* Find a command that hasn't completed. */ | |
721 | for (index = 0; index < ha->host->can_queue; index++) { | |
722 | cmd = scsi_host_find_tag(ha->host, index); | |
723 | if (cmd != NULL) | |
724 | break; | |
725 | } | |
726 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
727 | ||
728 | /* If No Commands are pending, wait is complete */ | |
729 | if (index == ha->host->can_queue) { | |
730 | break; | |
731 | } | |
732 | ||
733 | /* If we timed out on waiting for commands to come back | |
734 | * return ERROR. | |
735 | */ | |
736 | wait_cnt--; | |
737 | if (wait_cnt == 0) | |
738 | stat = QLA_ERROR; | |
739 | else { | |
740 | msleep(1000); | |
741 | } | |
742 | } /* End of While (wait_cnt) */ | |
743 | ||
744 | return stat; | |
745 | } | |
746 | ||
bee4fe8e | 747 | void qla4xxx_hw_reset(struct scsi_qla_host *ha) |
afaf5a2d | 748 | { |
afaf5a2d | 749 | uint32_t ctrl_status; |
477ffb9d DS |
750 | unsigned long flags = 0; |
751 | ||
752 | DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); | |
afaf5a2d DS |
753 | |
754 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
755 | ||
756 | /* | |
757 | * If the SCSI Reset Interrupt bit is set, clear it. | |
758 | * Otherwise, the Soft Reset won't work. | |
759 | */ | |
760 | ctrl_status = readw(&ha->reg->ctrl_status); | |
761 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) | |
762 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
763 | ||
764 | /* Issue Soft Reset */ | |
765 | writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); | |
766 | readl(&ha->reg->ctrl_status); | |
767 | ||
768 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
477ffb9d DS |
769 | } |
770 | ||
771 | /** | |
772 | * qla4xxx_soft_reset - performs soft reset. | |
773 | * @ha: Pointer to host adapter structure. | |
774 | **/ | |
775 | int qla4xxx_soft_reset(struct scsi_qla_host *ha) | |
776 | { | |
777 | uint32_t max_wait_time; | |
778 | unsigned long flags = 0; | |
779 | int status = QLA_ERROR; | |
780 | uint32_t ctrl_status; | |
781 | ||
782 | qla4xxx_hw_reset(ha); | |
afaf5a2d DS |
783 | |
784 | /* Wait until the Network Reset Intr bit is cleared */ | |
785 | max_wait_time = RESET_INTR_TOV; | |
786 | do { | |
787 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
788 | ctrl_status = readw(&ha->reg->ctrl_status); | |
789 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
790 | ||
791 | if ((ctrl_status & CSR_NET_RESET_INTR) == 0) | |
792 | break; | |
793 | ||
794 | msleep(1000); | |
795 | } while ((--max_wait_time)); | |
796 | ||
797 | if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { | |
798 | DEBUG2(printk(KERN_WARNING | |
799 | "scsi%ld: Network Reset Intr not cleared by " | |
800 | "Network function, clearing it now!\n", | |
801 | ha->host_no)); | |
802 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
803 | writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); | |
804 | readl(&ha->reg->ctrl_status); | |
805 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
806 | } | |
807 | ||
808 | /* Wait until the firmware tells us the Soft Reset is done */ | |
809 | max_wait_time = SOFT_RESET_TOV; | |
810 | do { | |
811 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
812 | ctrl_status = readw(&ha->reg->ctrl_status); | |
813 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
814 | ||
815 | if ((ctrl_status & CSR_SOFT_RESET) == 0) { | |
816 | status = QLA_SUCCESS; | |
817 | break; | |
818 | } | |
819 | ||
820 | msleep(1000); | |
821 | } while ((--max_wait_time)); | |
822 | ||
823 | /* | |
824 | * Also, make sure that the SCSI Reset Interrupt bit has been cleared | |
825 | * after the soft reset has taken place. | |
826 | */ | |
827 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
828 | ctrl_status = readw(&ha->reg->ctrl_status); | |
829 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { | |
830 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
831 | readl(&ha->reg->ctrl_status); | |
832 | } | |
833 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
834 | ||
835 | /* If soft reset fails then most probably the bios on other | |
836 | * function is also enabled. | |
837 | * Since the initialization is sequential the other fn | |
838 | * wont be able to acknowledge the soft reset. | |
839 | * Issue a force soft reset to workaround this scenario. | |
840 | */ | |
841 | if (max_wait_time == 0) { | |
842 | /* Issue Force Soft Reset */ | |
843 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
844 | writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); | |
845 | readl(&ha->reg->ctrl_status); | |
846 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
847 | /* Wait until the firmware tells us the Soft Reset is done */ | |
848 | max_wait_time = SOFT_RESET_TOV; | |
849 | do { | |
850 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
851 | ctrl_status = readw(&ha->reg->ctrl_status); | |
852 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
853 | ||
854 | if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { | |
855 | status = QLA_SUCCESS; | |
856 | break; | |
857 | } | |
858 | ||
859 | msleep(1000); | |
860 | } while ((--max_wait_time)); | |
861 | } | |
862 | ||
863 | return status; | |
864 | } | |
865 | ||
afaf5a2d DS |
866 | /** |
867 | * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S. | |
868 | * @ha: Pointer to host adapter structure. | |
869 | * | |
870 | * This routine is called just prior to a HARD RESET to return all | |
871 | * outstanding commands back to the Operating System. | |
872 | * Caller should make sure that the following locks are released | |
873 | * before this calling routine: Hardware lock, and io_request_lock. | |
874 | **/ | |
875 | static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) | |
876 | { | |
877 | struct srb *srb; | |
878 | int i; | |
879 | unsigned long flags; | |
880 | ||
881 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
882 | for (i = 0; i < ha->host->can_queue; i++) { | |
883 | srb = qla4xxx_del_from_active_array(ha, i); | |
884 | if (srb != NULL) { | |
885 | srb->cmd->result = DID_RESET << 16; | |
886 | qla4xxx_srb_compl(ha, srb); | |
887 | } | |
888 | } | |
889 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
890 | ||
891 | } | |
892 | ||
afaf5a2d DS |
893 | /** |
894 | * qla4xxx_recover_adapter - recovers adapter after a fatal error | |
895 | * @ha: Pointer to host adapter structure. | |
896 | * @renew_ddb_list: Indicates what to do with the adapter's ddb list | |
897 | * after adapter recovery has completed. | |
898 | * 0=preserve ddb list, 1=destroy and rebuild ddb list | |
899 | **/ | |
900 | static int qla4xxx_recover_adapter(struct scsi_qla_host *ha, | |
901 | uint8_t renew_ddb_list) | |
902 | { | |
903 | int status; | |
904 | ||
905 | /* Stall incoming I/O until we are done */ | |
906 | clear_bit(AF_ONLINE, &ha->flags); | |
907 | DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no, | |
908 | __func__)); | |
909 | ||
910 | /* Wait for outstanding commands to complete. | |
911 | * Stalls the driver for max 30 secs | |
912 | */ | |
913 | status = qla4xxx_cmd_wait(ha); | |
914 | ||
915 | qla4xxx_disable_intrs(ha); | |
916 | ||
917 | /* Flush any pending ddb changed AENs */ | |
918 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
919 | ||
920 | /* Reset the firmware. If successful, function | |
921 | * returns with ISP interrupts enabled. | |
922 | */ | |
923 | if (status == QLA_SUCCESS) { | |
924 | DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n", | |
925 | ha->host_no, __func__)); | |
f26b9044 DS |
926 | qla4xxx_flush_active_srbs(ha); |
927 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) | |
928 | status = qla4xxx_soft_reset(ha); | |
929 | else | |
930 | status = QLA_ERROR; | |
afaf5a2d DS |
931 | } |
932 | ||
933 | /* Flush any pending ddb changed AENs */ | |
934 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
935 | ||
936 | /* Re-initialize firmware. If successful, function returns | |
937 | * with ISP interrupts enabled */ | |
938 | if (status == QLA_SUCCESS) { | |
939 | DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n", | |
940 | ha->host_no, __func__)); | |
941 | ||
942 | /* If successful, AF_ONLINE flag set in | |
943 | * qla4xxx_initialize_adapter */ | |
944 | status = qla4xxx_initialize_adapter(ha, renew_ddb_list); | |
945 | } | |
946 | ||
947 | /* Failed adapter initialization? | |
948 | * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */ | |
949 | if ((test_bit(AF_ONLINE, &ha->flags) == 0) && | |
950 | (test_bit(DPC_RESET_HA, &ha->dpc_flags))) { | |
951 | /* Adapter initialization failed, see if we can retry | |
952 | * resetting the ha */ | |
953 | if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { | |
954 | ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; | |
955 | DEBUG2(printk("scsi%ld: recover adapter - retrying " | |
956 | "(%d) more times\n", ha->host_no, | |
957 | ha->retry_reset_ha_cnt)); | |
958 | set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
959 | status = QLA_ERROR; | |
960 | } else { | |
961 | if (ha->retry_reset_ha_cnt > 0) { | |
962 | /* Schedule another Reset HA--DPC will retry */ | |
963 | ha->retry_reset_ha_cnt--; | |
964 | DEBUG2(printk("scsi%ld: recover adapter - " | |
965 | "retry remaining %d\n", | |
966 | ha->host_no, | |
967 | ha->retry_reset_ha_cnt)); | |
968 | status = QLA_ERROR; | |
969 | } | |
970 | ||
971 | if (ha->retry_reset_ha_cnt == 0) { | |
972 | /* Recover adapter retries have been exhausted. | |
973 | * Adapter DEAD */ | |
974 | DEBUG2(printk("scsi%ld: recover adapter " | |
975 | "failed - board disabled\n", | |
976 | ha->host_no)); | |
977 | qla4xxx_flush_active_srbs(ha); | |
978 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
979 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
980 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, | |
981 | &ha->dpc_flags); | |
982 | status = QLA_ERROR; | |
983 | } | |
984 | } | |
985 | } else { | |
986 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
987 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags); | |
988 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
989 | } | |
990 | ||
991 | ha->adapter_error_count++; | |
992 | ||
993 | if (status == QLA_SUCCESS) | |
994 | qla4xxx_enable_intrs(ha); | |
995 | ||
996 | DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no)); | |
997 | return status; | |
998 | } | |
999 | ||
1000 | /** | |
1001 | * qla4xxx_do_dpc - dpc routine | |
1002 | * @data: in our case pointer to adapter structure | |
1003 | * | |
1004 | * This routine is a task that is schedule by the interrupt handler | |
1005 | * to perform the background processing for interrupts. We put it | |
1006 | * on a task queue that is consumed whenever the scheduler runs; that's | |
1007 | * so you can do anything (i.e. put the process to sleep etc). In fact, | |
1008 | * the mid-level tries to sleep when it reaches the driver threshold | |
1009 | * "host->can_queue". This can cause a panic if we were in our interrupt code. | |
1010 | **/ | |
c4028958 | 1011 | static void qla4xxx_do_dpc(struct work_struct *work) |
afaf5a2d | 1012 | { |
c4028958 DH |
1013 | struct scsi_qla_host *ha = |
1014 | container_of(work, struct scsi_qla_host, dpc_work); | |
afaf5a2d | 1015 | struct ddb_entry *ddb_entry, *dtemp; |
477ffb9d | 1016 | int status = QLA_ERROR; |
afaf5a2d | 1017 | |
f26b9044 | 1018 | DEBUG2(printk("scsi%ld: %s: DPC handler waking up." |
477ffb9d DS |
1019 | "flags = 0x%08lx, dpc_flags = 0x%08lx ctrl_stat = 0x%08x\n", |
1020 | ha->host_no, __func__, ha->flags, ha->dpc_flags, | |
1021 | readw(&ha->reg->ctrl_status))); | |
afaf5a2d DS |
1022 | |
1023 | /* Initialization not yet finished. Don't do anything yet. */ | |
1024 | if (!test_bit(AF_INIT_DONE, &ha->flags)) | |
1025 | return; | |
1026 | ||
1027 | if (adapter_up(ha) || | |
1028 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
1029 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
1030 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) { | |
f26b9044 DS |
1031 | if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || |
1032 | test_bit(DPC_RESET_HA, &ha->dpc_flags)) | |
afaf5a2d DS |
1033 | qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); |
1034 | ||
477ffb9d | 1035 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
afaf5a2d | 1036 | uint8_t wait_time = RESET_INTR_TOV; |
afaf5a2d | 1037 | |
afaf5a2d DS |
1038 | while ((readw(&ha->reg->ctrl_status) & |
1039 | (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { | |
1040 | if (--wait_time == 0) | |
1041 | break; | |
afaf5a2d | 1042 | msleep(1000); |
afaf5a2d | 1043 | } |
afaf5a2d DS |
1044 | if (wait_time == 0) |
1045 | DEBUG2(printk("scsi%ld: %s: SR|FSR " | |
1046 | "bit not cleared-- resetting\n", | |
1047 | ha->host_no, __func__)); | |
477ffb9d DS |
1048 | qla4xxx_flush_active_srbs(ha); |
1049 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { | |
1050 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1051 | status = qla4xxx_initialize_adapter(ha, | |
1052 | PRESERVE_DDB_LIST); | |
1053 | } | |
1054 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1055 | if (status == QLA_SUCCESS) | |
1056 | qla4xxx_enable_intrs(ha); | |
afaf5a2d DS |
1057 | } |
1058 | } | |
1059 | ||
1060 | /* ---- process AEN? --- */ | |
1061 | if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) | |
1062 | qla4xxx_process_aen(ha, PROCESS_ALL_AENS); | |
1063 | ||
1064 | /* ---- Get DHCP IP Address? --- */ | |
1065 | if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) | |
1066 | qla4xxx_get_dhcp_ip_address(ha); | |
1067 | ||
1068 | /* ---- relogin device? --- */ | |
1069 | if (adapter_up(ha) && | |
1070 | test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { | |
1071 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1072 | &ha->ddb_list, list) { | |
1073 | if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && | |
1074 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
1075 | qla4xxx_relogin_device(ha, ddb_entry); | |
1076 | ||
1077 | /* | |
1078 | * If mbx cmd times out there is no point | |
1079 | * in continuing further. | |
1080 | * With large no of targets this can hang | |
1081 | * the system. | |
1082 | */ | |
1083 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
1084 | printk(KERN_WARNING "scsi%ld: %s: " | |
1085 | "need to reset hba\n", | |
1086 | ha->host_no, __func__); | |
1087 | break; | |
1088 | } | |
1089 | } | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | /** | |
1094 | * qla4xxx_free_adapter - release the adapter | |
1095 | * @ha: pointer to adapter structure | |
1096 | **/ | |
1097 | static void qla4xxx_free_adapter(struct scsi_qla_host *ha) | |
1098 | { | |
1099 | ||
1100 | if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { | |
1101 | /* Turn-off interrupts on the card. */ | |
1102 | qla4xxx_disable_intrs(ha); | |
1103 | } | |
1104 | ||
1105 | /* Kill the kernel thread for this host */ | |
1106 | if (ha->dpc_thread) | |
1107 | destroy_workqueue(ha->dpc_thread); | |
1108 | ||
1109 | /* Issue Soft Reset to put firmware in unknown state */ | |
f26b9044 | 1110 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) |
477ffb9d | 1111 | qla4xxx_hw_reset(ha); |
afaf5a2d DS |
1112 | |
1113 | /* Remove timer thread, if present */ | |
1114 | if (ha->timer_active) | |
1115 | qla4xxx_stop_timer(ha); | |
1116 | ||
afaf5a2d DS |
1117 | /* Detach interrupts */ |
1118 | if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) | |
1119 | free_irq(ha->pdev->irq, ha); | |
1120 | ||
bee4fe8e DS |
1121 | /* free extra memory */ |
1122 | qla4xxx_mem_free(ha); | |
1123 | ||
afaf5a2d DS |
1124 | pci_disable_device(ha->pdev); |
1125 | ||
1126 | } | |
1127 | ||
1128 | /*** | |
1129 | * qla4xxx_iospace_config - maps registers | |
1130 | * @ha: pointer to adapter structure | |
1131 | * | |
1132 | * This routines maps HBA's registers from the pci address space | |
1133 | * into the kernel virtual address space for memory mapped i/o. | |
1134 | **/ | |
1135 | static int qla4xxx_iospace_config(struct scsi_qla_host *ha) | |
1136 | { | |
1137 | unsigned long pio, pio_len, pio_flags; | |
1138 | unsigned long mmio, mmio_len, mmio_flags; | |
1139 | ||
1140 | pio = pci_resource_start(ha->pdev, 0); | |
1141 | pio_len = pci_resource_len(ha->pdev, 0); | |
1142 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1143 | if (pio_flags & IORESOURCE_IO) { | |
1144 | if (pio_len < MIN_IOBASE_LEN) { | |
1145 | dev_warn(&ha->pdev->dev, | |
1146 | "Invalid PCI I/O region size\n"); | |
1147 | pio = 0; | |
1148 | } | |
1149 | } else { | |
1150 | dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n"); | |
1151 | pio = 0; | |
1152 | } | |
1153 | ||
1154 | /* Use MMIO operations for all accesses. */ | |
1155 | mmio = pci_resource_start(ha->pdev, 1); | |
1156 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1157 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1158 | ||
1159 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
1160 | dev_err(&ha->pdev->dev, | |
1161 | "region #0 not an MMIO resource, aborting\n"); | |
1162 | ||
1163 | goto iospace_error_exit; | |
1164 | } | |
1165 | if (mmio_len < MIN_IOBASE_LEN) { | |
1166 | dev_err(&ha->pdev->dev, | |
1167 | "Invalid PCI mem region size, aborting\n"); | |
1168 | goto iospace_error_exit; | |
1169 | } | |
1170 | ||
1171 | if (pci_request_regions(ha->pdev, DRIVER_NAME)) { | |
1172 | dev_warn(&ha->pdev->dev, | |
1173 | "Failed to reserve PIO/MMIO regions\n"); | |
1174 | ||
1175 | goto iospace_error_exit; | |
1176 | } | |
1177 | ||
1178 | ha->pio_address = pio; | |
1179 | ha->pio_length = pio_len; | |
1180 | ha->reg = ioremap(mmio, MIN_IOBASE_LEN); | |
1181 | if (!ha->reg) { | |
1182 | dev_err(&ha->pdev->dev, | |
1183 | "cannot remap MMIO, aborting\n"); | |
1184 | ||
1185 | goto iospace_error_exit; | |
1186 | } | |
1187 | ||
1188 | return 0; | |
1189 | ||
1190 | iospace_error_exit: | |
1191 | return -ENOMEM; | |
1192 | } | |
1193 | ||
1194 | /** | |
1195 | * qla4xxx_probe_adapter - callback function to probe HBA | |
1196 | * @pdev: pointer to pci_dev structure | |
1197 | * @pci_device_id: pointer to pci_device entry | |
1198 | * | |
1199 | * This routine will probe for Qlogic 4xxx iSCSI host adapters. | |
1200 | * It returns zero if successful. It also initializes all data necessary for | |
1201 | * the driver. | |
1202 | **/ | |
1203 | static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, | |
1204 | const struct pci_device_id *ent) | |
1205 | { | |
1206 | int ret = -ENODEV, status; | |
1207 | struct Scsi_Host *host; | |
1208 | struct scsi_qla_host *ha; | |
1209 | struct ddb_entry *ddb_entry, *ddbtemp; | |
1210 | uint8_t init_retry_count = 0; | |
1211 | char buf[34]; | |
1212 | ||
1213 | if (pci_enable_device(pdev)) | |
1214 | return -1; | |
1215 | ||
1216 | host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); | |
1217 | if (host == NULL) { | |
1218 | printk(KERN_WARNING | |
1219 | "qla4xxx: Couldn't allocate host from scsi layer!\n"); | |
1220 | goto probe_disable_device; | |
1221 | } | |
1222 | ||
1223 | /* Clear our data area */ | |
1224 | ha = (struct scsi_qla_host *) host->hostdata; | |
1225 | memset(ha, 0, sizeof(*ha)); | |
1226 | ||
1227 | /* Save the information from PCI BIOS. */ | |
1228 | ha->pdev = pdev; | |
1229 | ha->host = host; | |
1230 | ha->host_no = host->host_no; | |
1231 | ||
1232 | /* Configure PCI I/O space. */ | |
1233 | ret = qla4xxx_iospace_config(ha); | |
1234 | if (ret) | |
1235 | goto probe_failed; | |
1236 | ||
1237 | dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n", | |
1238 | pdev->device, pdev->irq, ha->reg); | |
1239 | ||
1240 | qla4xxx_config_dma_addressing(ha); | |
1241 | ||
1242 | /* Initialize lists and spinlocks. */ | |
1243 | INIT_LIST_HEAD(&ha->ddb_list); | |
1244 | INIT_LIST_HEAD(&ha->free_srb_q); | |
1245 | ||
1246 | mutex_init(&ha->mbox_sem); | |
afaf5a2d DS |
1247 | |
1248 | spin_lock_init(&ha->hardware_lock); | |
afaf5a2d DS |
1249 | |
1250 | /* Allocate dma buffers */ | |
1251 | if (qla4xxx_mem_alloc(ha)) { | |
1252 | dev_warn(&ha->pdev->dev, | |
1253 | "[ERROR] Failed to allocate memory for adapter\n"); | |
1254 | ||
1255 | ret = -ENOMEM; | |
1256 | goto probe_failed; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * Initialize the Host adapter request/response queues and | |
1261 | * firmware | |
1262 | * NOTE: interrupts enabled upon successful completion | |
1263 | */ | |
1264 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1265 | while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) { | |
1266 | DEBUG2(printk("scsi: %s: retrying adapter initialization " | |
1267 | "(%d)\n", __func__, init_retry_count)); | |
1268 | qla4xxx_soft_reset(ha); | |
1269 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1270 | } | |
1271 | if (status == QLA_ERROR) { | |
1272 | dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n"); | |
1273 | ||
1274 | ret = -ENODEV; | |
1275 | goto probe_failed; | |
1276 | } | |
1277 | ||
1278 | host->cmd_per_lun = 3; | |
1279 | host->max_channel = 0; | |
1280 | host->max_lun = MAX_LUNS - 1; | |
1281 | host->max_id = MAX_TARGETS; | |
1282 | host->max_cmd_len = IOCB_MAX_CDB_LEN; | |
1283 | host->can_queue = MAX_SRBS ; | |
1284 | host->transportt = qla4xxx_scsi_transport; | |
1285 | ||
1286 | ret = scsi_init_shared_tag_map(host, MAX_SRBS); | |
1287 | if (ret) { | |
1288 | dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed"); | |
1289 | goto probe_failed; | |
1290 | } | |
1291 | ||
1292 | /* Startup the kernel thread for this host adapter. */ | |
1293 | DEBUG2(printk("scsi: %s: Starting kernel thread for " | |
1294 | "qla4xxx_dpc\n", __func__)); | |
1295 | sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); | |
1296 | ha->dpc_thread = create_singlethread_workqueue(buf); | |
1297 | if (!ha->dpc_thread) { | |
1298 | dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n"); | |
1299 | ret = -ENODEV; | |
1300 | goto probe_failed; | |
1301 | } | |
c4028958 | 1302 | INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); |
afaf5a2d DS |
1303 | |
1304 | ret = request_irq(pdev->irq, qla4xxx_intr_handler, | |
38515e90 | 1305 | IRQF_DISABLED | IRQF_SHARED, "qla4xxx", ha); |
afaf5a2d DS |
1306 | if (ret) { |
1307 | dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d" | |
1308 | " already in use.\n", pdev->irq); | |
1309 | goto probe_failed; | |
1310 | } | |
1311 | set_bit(AF_IRQ_ATTACHED, &ha->flags); | |
1312 | host->irq = pdev->irq; | |
1313 | DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq)); | |
1314 | ||
1315 | qla4xxx_enable_intrs(ha); | |
1316 | ||
1317 | /* Start timer thread. */ | |
1318 | qla4xxx_start_timer(ha, qla4xxx_timer, 1); | |
1319 | ||
1320 | set_bit(AF_INIT_DONE, &ha->flags); | |
1321 | ||
1322 | pci_set_drvdata(pdev, ha); | |
1323 | ||
1324 | ret = scsi_add_host(host, &pdev->dev); | |
1325 | if (ret) | |
1326 | goto probe_failed; | |
1327 | ||
1328 | /* Update transport device information for all devices. */ | |
1329 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
1330 | if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) | |
1331 | if (qla4xxx_add_sess(ddb_entry)) | |
1332 | goto remove_host; | |
1333 | } | |
1334 | ||
1335 | printk(KERN_INFO | |
1336 | " QLogic iSCSI HBA Driver version: %s\n" | |
1337 | " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", | |
1338 | qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), | |
1339 | ha->host_no, ha->firmware_version[0], ha->firmware_version[1], | |
1340 | ha->patch_number, ha->build_number); | |
1341 | ||
1342 | return 0; | |
1343 | ||
1344 | remove_host: | |
1345 | qla4xxx_free_ddb_list(ha); | |
1346 | scsi_remove_host(host); | |
1347 | ||
1348 | probe_failed: | |
1349 | qla4xxx_free_adapter(ha); | |
1350 | scsi_host_put(ha->host); | |
1351 | ||
1352 | probe_disable_device: | |
1353 | pci_disable_device(pdev); | |
1354 | ||
1355 | return ret; | |
1356 | } | |
1357 | ||
1358 | /** | |
1359 | * qla4xxx_remove_adapter - calback function to remove adapter. | |
1360 | * @pci_dev: PCI device pointer | |
1361 | **/ | |
1362 | static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) | |
1363 | { | |
1364 | struct scsi_qla_host *ha; | |
1365 | ||
1366 | ha = pci_get_drvdata(pdev); | |
1367 | ||
bee4fe8e DS |
1368 | qla4xxx_disable_intrs(ha); |
1369 | ||
1370 | while (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) | |
1371 | ssleep(1); | |
1372 | ||
afaf5a2d DS |
1373 | /* remove devs from iscsi_sessions to scsi_devices */ |
1374 | qla4xxx_free_ddb_list(ha); | |
1375 | ||
1376 | scsi_remove_host(ha->host); | |
1377 | ||
1378 | qla4xxx_free_adapter(ha); | |
1379 | ||
1380 | scsi_host_put(ha->host); | |
1381 | ||
1382 | pci_set_drvdata(pdev, NULL); | |
1383 | } | |
1384 | ||
1385 | /** | |
1386 | * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. | |
1387 | * @ha: HA context | |
1388 | * | |
1389 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1390 | * supported addressing method. | |
1391 | */ | |
47975477 | 1392 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) |
afaf5a2d DS |
1393 | { |
1394 | int retval; | |
1395 | ||
1396 | /* Update our PCI device dma_mask for full 64 bit mask */ | |
1397 | if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { | |
1398 | if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) { | |
1399 | dev_dbg(&ha->pdev->dev, | |
1400 | "Failed to set 64 bit PCI consistent mask; " | |
1401 | "using 32 bit.\n"); | |
1402 | retval = pci_set_consistent_dma_mask(ha->pdev, | |
1403 | DMA_32BIT_MASK); | |
1404 | } | |
1405 | } else | |
1406 | retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); | |
1407 | } | |
1408 | ||
1409 | static int qla4xxx_slave_alloc(struct scsi_device *sdev) | |
1410 | { | |
1411 | struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); | |
1412 | struct ddb_entry *ddb = sess->dd_data; | |
1413 | ||
1414 | sdev->hostdata = ddb; | |
1415 | sdev->tagged_supported = 1; | |
1416 | scsi_activate_tcq(sdev, sdev->host->can_queue); | |
1417 | return 0; | |
1418 | } | |
1419 | ||
1420 | static int qla4xxx_slave_configure(struct scsi_device *sdev) | |
1421 | { | |
1422 | sdev->tagged_supported = 1; | |
1423 | return 0; | |
1424 | } | |
1425 | ||
1426 | static void qla4xxx_slave_destroy(struct scsi_device *sdev) | |
1427 | { | |
1428 | scsi_deactivate_tcq(sdev, 1); | |
1429 | } | |
1430 | ||
1431 | /** | |
1432 | * qla4xxx_del_from_active_array - returns an active srb | |
1433 | * @ha: Pointer to host adapter structure. | |
1434 | * @index: index into to the active_array | |
1435 | * | |
1436 | * This routine removes and returns the srb at the specified index | |
1437 | **/ | |
1438 | struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index) | |
1439 | { | |
1440 | struct srb *srb = NULL; | |
1441 | struct scsi_cmnd *cmd; | |
1442 | ||
1443 | if (!(cmd = scsi_host_find_tag(ha->host, index))) | |
1444 | return srb; | |
1445 | ||
1446 | if (!(srb = (struct srb *)cmd->host_scribble)) | |
1447 | return srb; | |
1448 | ||
1449 | /* update counters */ | |
1450 | if (srb->flags & SRB_DMA_VALID) { | |
1451 | ha->req_q_count += srb->iocb_cnt; | |
1452 | ha->iocb_cnt -= srb->iocb_cnt; | |
1453 | if (srb->cmd) | |
1454 | srb->cmd->host_scribble = NULL; | |
1455 | } | |
1456 | return srb; | |
1457 | } | |
1458 | ||
afaf5a2d DS |
1459 | /** |
1460 | * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware | |
1461 | * @ha: actual ha whose done queue will contain the comd returned by firmware. | |
1462 | * @cmd: Scsi Command to wait on. | |
1463 | * | |
1464 | * This routine waits for the command to be returned by the Firmware | |
1465 | * for some max time. | |
1466 | **/ | |
1467 | static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, | |
1468 | struct scsi_cmnd *cmd) | |
1469 | { | |
1470 | int done = 0; | |
1471 | struct srb *rp; | |
1472 | uint32_t max_wait_time = EH_WAIT_CMD_TOV; | |
1473 | ||
1474 | do { | |
1475 | /* Checking to see if its returned to OS */ | |
1476 | rp = (struct srb *) cmd->SCp.ptr; | |
1477 | if (rp == NULL) { | |
1478 | done++; | |
1479 | break; | |
1480 | } | |
1481 | ||
1482 | msleep(2000); | |
1483 | } while (max_wait_time--); | |
1484 | ||
1485 | return done; | |
1486 | } | |
1487 | ||
1488 | /** | |
1489 | * qla4xxx_wait_for_hba_online - waits for HBA to come online | |
1490 | * @ha: Pointer to host adapter structure | |
1491 | **/ | |
1492 | static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) | |
1493 | { | |
1494 | unsigned long wait_online; | |
1495 | ||
1496 | wait_online = jiffies + (30 * HZ); | |
1497 | while (time_before(jiffies, wait_online)) { | |
1498 | ||
1499 | if (adapter_up(ha)) | |
1500 | return QLA_SUCCESS; | |
1501 | else if (ha->retry_reset_ha_cnt == 0) | |
1502 | return QLA_ERROR; | |
1503 | ||
1504 | msleep(2000); | |
1505 | } | |
1506 | ||
1507 | return QLA_ERROR; | |
1508 | } | |
1509 | ||
1510 | /** | |
1511 | * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish. | |
1512 | * @ha: pointer to to HBA | |
1513 | * @t: target id | |
1514 | * @l: lun id | |
1515 | * | |
1516 | * This function waits for all outstanding commands to a lun to complete. It | |
1517 | * returns 0 if all pending commands are returned and 1 otherwise. | |
1518 | **/ | |
1519 | static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha, | |
1520 | int t, int l) | |
1521 | { | |
1522 | int cnt; | |
1523 | int status = 0; | |
1524 | struct scsi_cmnd *cmd; | |
1525 | ||
1526 | /* | |
1527 | * Waiting for all commands for the designated target in the active | |
1528 | * array | |
1529 | */ | |
1530 | for (cnt = 0; cnt < ha->host->can_queue; cnt++) { | |
1531 | cmd = scsi_host_find_tag(ha->host, cnt); | |
1532 | if (cmd && cmd->device->id == t && cmd->device->lun == l) { | |
1533 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { | |
1534 | status++; | |
1535 | break; | |
1536 | } | |
1537 | } | |
1538 | } | |
1539 | return status; | |
1540 | } | |
1541 | ||
1542 | /** | |
1543 | * qla4xxx_eh_device_reset - callback for target reset. | |
1544 | * @cmd: Pointer to Linux's SCSI command structure | |
1545 | * | |
1546 | * This routine is called by the Linux OS to reset all luns on the | |
1547 | * specified target. | |
1548 | **/ | |
1549 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
1550 | { | |
1551 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
1552 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
1553 | struct srb *sp; | |
1554 | int ret = FAILED, stat; | |
1555 | ||
1556 | sp = (struct srb *) cmd->SCp.ptr; | |
1557 | if (!sp || !ddb_entry) | |
1558 | return ret; | |
1559 | ||
1560 | dev_info(&ha->pdev->dev, | |
1561 | "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, | |
1562 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1563 | ||
1564 | DEBUG2(printk(KERN_INFO | |
1565 | "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," | |
1566 | "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, | |
1567 | cmd, jiffies, cmd->timeout_per_command / HZ, | |
1568 | ha->dpc_flags, cmd->result, cmd->allowed)); | |
1569 | ||
1570 | /* FIXME: wait for hba to go online */ | |
1571 | stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); | |
1572 | if (stat != QLA_SUCCESS) { | |
1573 | dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat); | |
1574 | goto eh_dev_reset_done; | |
1575 | } | |
1576 | ||
1577 | /* Send marker. */ | |
1578 | ha->marker_needed = 1; | |
1579 | ||
1580 | /* | |
1581 | * If we are coming down the EH path, wait for all commands to complete | |
1582 | * for the device. | |
1583 | */ | |
1584 | if (cmd->device->host->shost_state == SHOST_RECOVERY) { | |
1585 | if (qla4xxx_eh_wait_for_active_target_commands(ha, | |
1586 | cmd->device->id, | |
1587 | cmd->device->lun)){ | |
1588 | dev_info(&ha->pdev->dev, | |
1589 | "DEVICE RESET FAILED - waiting for " | |
1590 | "commands.\n"); | |
1591 | goto eh_dev_reset_done; | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | dev_info(&ha->pdev->dev, | |
1596 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", | |
1597 | ha->host_no, cmd->device->channel, cmd->device->id, | |
1598 | cmd->device->lun); | |
1599 | ||
1600 | ret = SUCCESS; | |
1601 | ||
1602 | eh_dev_reset_done: | |
1603 | ||
1604 | return ret; | |
1605 | } | |
1606 | ||
1607 | /** | |
1608 | * qla4xxx_eh_host_reset - kernel callback | |
1609 | * @cmd: Pointer to Linux's SCSI command structure | |
1610 | * | |
1611 | * This routine is invoked by the Linux kernel to perform fatal error | |
1612 | * recovery on the specified adapter. | |
1613 | **/ | |
1614 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
1615 | { | |
1616 | int return_status = FAILED; | |
1617 | struct scsi_qla_host *ha; | |
1618 | ||
1619 | ha = (struct scsi_qla_host *) cmd->device->host->hostdata; | |
1620 | ||
1621 | dev_info(&ha->pdev->dev, | |
1622 | "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, | |
1623 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1624 | ||
1625 | if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1626 | DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " | |
1627 | "DEAD.\n", ha->host_no, cmd->device->channel, | |
1628 | __func__)); | |
1629 | ||
1630 | return FAILED; | |
1631 | } | |
1632 | ||
1633 | if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) { | |
1634 | return_status = SUCCESS; | |
1635 | } | |
1636 | ||
1637 | dev_info(&ha->pdev->dev, "HOST RESET %s.\n", | |
1638 | return_status == FAILED ? "FAILED" : "SUCCEDED"); | |
1639 | ||
1640 | return return_status; | |
1641 | } | |
1642 | ||
1643 | ||
1644 | static struct pci_device_id qla4xxx_pci_tbl[] = { | |
1645 | { | |
1646 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1647 | .device = PCI_DEVICE_ID_QLOGIC_ISP4010, | |
1648 | .subvendor = PCI_ANY_ID, | |
1649 | .subdevice = PCI_ANY_ID, | |
1650 | }, | |
1651 | { | |
1652 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1653 | .device = PCI_DEVICE_ID_QLOGIC_ISP4022, | |
1654 | .subvendor = PCI_ANY_ID, | |
1655 | .subdevice = PCI_ANY_ID, | |
1656 | }, | |
d915058f DS |
1657 | { |
1658 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1659 | .device = PCI_DEVICE_ID_QLOGIC_ISP4032, | |
1660 | .subvendor = PCI_ANY_ID, | |
1661 | .subdevice = PCI_ANY_ID, | |
1662 | }, | |
afaf5a2d DS |
1663 | {0, 0}, |
1664 | }; | |
1665 | MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); | |
1666 | ||
47975477 | 1667 | static struct pci_driver qla4xxx_pci_driver = { |
afaf5a2d DS |
1668 | .name = DRIVER_NAME, |
1669 | .id_table = qla4xxx_pci_tbl, | |
1670 | .probe = qla4xxx_probe_adapter, | |
1671 | .remove = qla4xxx_remove_adapter, | |
1672 | }; | |
1673 | ||
1674 | static int __init qla4xxx_module_init(void) | |
1675 | { | |
1676 | int ret; | |
1677 | ||
1678 | /* Allocate cache for SRBs. */ | |
1679 | srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, | |
20c2df83 | 1680 | SLAB_HWCACHE_ALIGN, NULL); |
afaf5a2d DS |
1681 | if (srb_cachep == NULL) { |
1682 | printk(KERN_ERR | |
1683 | "%s: Unable to allocate SRB cache..." | |
1684 | "Failing load!\n", DRIVER_NAME); | |
1685 | ret = -ENOMEM; | |
1686 | goto no_srp_cache; | |
1687 | } | |
1688 | ||
1689 | /* Derive version string. */ | |
1690 | strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); | |
11010fec | 1691 | if (ql4xextended_error_logging) |
afaf5a2d DS |
1692 | strcat(qla4xxx_version_str, "-debug"); |
1693 | ||
1694 | qla4xxx_scsi_transport = | |
1695 | iscsi_register_transport(&qla4xxx_iscsi_transport); | |
1696 | if (!qla4xxx_scsi_transport){ | |
1697 | ret = -ENODEV; | |
1698 | goto release_srb_cache; | |
1699 | } | |
1700 | ||
afaf5a2d DS |
1701 | ret = pci_register_driver(&qla4xxx_pci_driver); |
1702 | if (ret) | |
1703 | goto unregister_transport; | |
1704 | ||
1705 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
1706 | return 0; | |
5ae16db3 | 1707 | |
afaf5a2d DS |
1708 | unregister_transport: |
1709 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1710 | release_srb_cache: | |
1711 | kmem_cache_destroy(srb_cachep); | |
1712 | no_srp_cache: | |
1713 | return ret; | |
1714 | } | |
1715 | ||
1716 | static void __exit qla4xxx_module_exit(void) | |
1717 | { | |
477ffb9d | 1718 | ql4_mod_unload = 1; |
afaf5a2d DS |
1719 | pci_unregister_driver(&qla4xxx_pci_driver); |
1720 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1721 | kmem_cache_destroy(srb_cachep); | |
1722 | } | |
1723 | ||
1724 | module_init(qla4xxx_module_init); | |
1725 | module_exit(qla4xxx_module_exit); | |
1726 | ||
1727 | MODULE_AUTHOR("QLogic Corporation"); | |
1728 | MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); | |
1729 | MODULE_LICENSE("GPL"); | |
1730 | MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |