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, | |
9cb83c75 | 97 | .use_sg_chaining = ENABLE_SG_CHAINING, |
afaf5a2d DS |
98 | .sg_tablesize = SG_ALL, |
99 | ||
100 | .max_sectors = 0xFFFF, | |
101 | }; | |
102 | ||
103 | static struct iscsi_transport qla4xxx_iscsi_transport = { | |
104 | .owner = THIS_MODULE, | |
105 | .name = DRIVER_NAME, | |
d8196ed2 MC |
106 | .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | |
107 | CAP_DATA_PATH_OFFLOAD, | |
aa1e93a2 MC |
108 | .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
109 | ISCSI_TARGET_NAME | ISCSI_TPGT, | |
8ad5781a | 110 | .host_param_mask = ISCSI_HOST_HWADDRESS | |
22236961 | 111 | ISCSI_HOST_IPADDRESS | |
8ad5781a | 112 | ISCSI_HOST_INITIATOR_NAME, |
afaf5a2d DS |
113 | .sessiondata_size = sizeof(struct ddb_entry), |
114 | .host_template = &qla4xxx_driver_template, | |
115 | ||
116 | .tgt_dscvr = qla4xxx_tgt_dscvr, | |
117 | .get_conn_param = qla4xxx_conn_get_param, | |
118 | .get_session_param = qla4xxx_sess_get_param, | |
aa1e93a2 | 119 | .get_host_param = qla4xxx_host_get_param, |
afaf5a2d DS |
120 | .start_conn = qla4xxx_conn_start, |
121 | .stop_conn = qla4xxx_conn_stop, | |
122 | .session_recovery_timedout = qla4xxx_recovery_timedout, | |
123 | }; | |
124 | ||
125 | static struct scsi_transport_template *qla4xxx_scsi_transport; | |
126 | ||
127 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) | |
128 | { | |
129 | struct ddb_entry *ddb_entry = session->dd_data; | |
130 | struct scsi_qla_host *ha = ddb_entry->ha; | |
131 | ||
132 | DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) " | |
133 | "secs exhausted, marking device DEAD.\n", ha->host_no, | |
134 | __func__, ddb_entry->fw_ddb_index, | |
135 | ha->port_down_retry_count)); | |
136 | ||
137 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); | |
138 | ||
139 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = " | |
140 | "0x%lx\n", ha->host_no, __func__, ha->dpc_flags)); | |
141 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
142 | } | |
143 | ||
144 | static int qla4xxx_conn_start(struct iscsi_cls_conn *conn) | |
145 | { | |
146 | struct iscsi_cls_session *session; | |
147 | struct ddb_entry *ddb_entry; | |
148 | ||
149 | session = iscsi_dev_to_session(conn->dev.parent); | |
150 | ddb_entry = session->dd_data; | |
151 | ||
152 | DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n", | |
153 | ddb_entry->ha->host_no, __func__, | |
154 | ddb_entry->fw_ddb_index)); | |
155 | iscsi_unblock_session(session); | |
156 | return 0; | |
157 | } | |
158 | ||
159 | static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag) | |
160 | { | |
161 | struct iscsi_cls_session *session; | |
162 | struct ddb_entry *ddb_entry; | |
163 | ||
164 | session = iscsi_dev_to_session(conn->dev.parent); | |
165 | ddb_entry = session->dd_data; | |
166 | ||
167 | DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n", | |
168 | ddb_entry->ha->host_no, __func__, | |
169 | ddb_entry->fw_ddb_index)); | |
170 | if (flag == STOP_CONN_RECOVER) | |
171 | iscsi_block_session(session); | |
172 | else | |
173 | printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag); | |
174 | } | |
175 | ||
aa1e93a2 MC |
176 | static ssize_t format_addr(char *buf, const unsigned char *addr, int len) |
177 | { | |
178 | int i; | |
179 | char *cp = buf; | |
180 | ||
181 | for (i = 0; i < len; i++) | |
182 | cp += sprintf(cp, "%02x%c", addr[i], | |
183 | i == (len - 1) ? '\n' : ':'); | |
184 | return cp - buf; | |
185 | } | |
186 | ||
187 | ||
188 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, | |
189 | enum iscsi_host_param param, char *buf) | |
190 | { | |
191 | struct scsi_qla_host *ha = to_qla_host(shost); | |
192 | int len; | |
193 | ||
194 | switch (param) { | |
195 | case ISCSI_HOST_PARAM_HWADDRESS: | |
196 | len = format_addr(buf, ha->my_mac, MAC_ADDR_LEN); | |
8ad5781a | 197 | break; |
22236961 MC |
198 | case ISCSI_HOST_PARAM_IPADDRESS: |
199 | len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], | |
200 | ha->ip_address[1], ha->ip_address[2], | |
201 | ha->ip_address[3]); | |
202 | break; | |
8ad5781a | 203 | case ISCSI_HOST_PARAM_INITIATOR_NAME: |
22236961 | 204 | len = sprintf(buf, "%s\n", ha->name_string); |
aa1e93a2 MC |
205 | break; |
206 | default: | |
207 | return -ENOSYS; | |
208 | } | |
209 | ||
210 | return len; | |
211 | } | |
212 | ||
afaf5a2d DS |
213 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
214 | enum iscsi_param param, char *buf) | |
215 | { | |
216 | struct ddb_entry *ddb_entry = sess->dd_data; | |
217 | int len; | |
218 | ||
219 | switch (param) { | |
220 | case ISCSI_PARAM_TARGET_NAME: | |
221 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
222 | ddb_entry->iscsi_name); | |
223 | break; | |
224 | case ISCSI_PARAM_TPGT: | |
225 | len = sprintf(buf, "%u\n", ddb_entry->tpgt); | |
226 | break; | |
227 | default: | |
228 | return -ENOSYS; | |
229 | } | |
230 | ||
231 | return len; | |
232 | } | |
233 | ||
234 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
235 | enum iscsi_param param, char *buf) | |
236 | { | |
237 | struct iscsi_cls_session *session; | |
238 | struct ddb_entry *ddb_entry; | |
239 | int len; | |
240 | ||
241 | session = iscsi_dev_to_session(conn->dev.parent); | |
242 | ddb_entry = session->dd_data; | |
243 | ||
244 | switch (param) { | |
245 | case ISCSI_PARAM_CONN_PORT: | |
246 | len = sprintf(buf, "%hu\n", ddb_entry->port); | |
247 | break; | |
248 | case ISCSI_PARAM_CONN_ADDRESS: | |
249 | /* TODO: what are the ipv6 bits */ | |
250 | len = sprintf(buf, "%u.%u.%u.%u\n", | |
251 | NIPQUAD(ddb_entry->ip_addr)); | |
252 | break; | |
253 | default: | |
254 | return -ENOSYS; | |
255 | } | |
256 | ||
257 | return len; | |
258 | } | |
259 | ||
2174a04e MC |
260 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
261 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
262 | struct sockaddr *dst_addr) | |
afaf5a2d DS |
263 | { |
264 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
265 | struct sockaddr_in *addr; |
266 | struct sockaddr_in6 *addr6; | |
267 | int ret = 0; | |
268 | ||
afaf5a2d DS |
269 | ha = (struct scsi_qla_host *) shost->hostdata; |
270 | ||
271 | switch (type) { | |
272 | case ISCSI_TGT_DSCVR_SEND_TARGETS: | |
273 | if (dst_addr->sa_family == AF_INET) { | |
274 | addr = (struct sockaddr_in *)dst_addr; | |
275 | if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, | |
276 | addr->sin_port) != QLA_SUCCESS) | |
277 | ret = -EIO; | |
278 | } else if (dst_addr->sa_family == AF_INET6) { | |
279 | /* | |
280 | * TODO: fix qla4xxx_send_tgts | |
281 | */ | |
282 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
283 | if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, | |
284 | addr6->sin6_port) != QLA_SUCCESS) | |
285 | ret = -EIO; | |
286 | } else | |
287 | ret = -ENOSYS; | |
288 | break; | |
289 | default: | |
290 | ret = -ENOSYS; | |
291 | } | |
afaf5a2d DS |
292 | return ret; |
293 | } | |
294 | ||
295 | void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) | |
296 | { | |
297 | if (!ddb_entry->sess) | |
298 | return; | |
299 | ||
300 | if (ddb_entry->conn) { | |
301 | iscsi_if_destroy_session_done(ddb_entry->conn); | |
302 | iscsi_destroy_conn(ddb_entry->conn); | |
303 | iscsi_remove_session(ddb_entry->sess); | |
304 | } | |
305 | iscsi_free_session(ddb_entry->sess); | |
306 | } | |
307 | ||
308 | int qla4xxx_add_sess(struct ddb_entry *ddb_entry) | |
309 | { | |
310 | int err; | |
311 | ||
312 | err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); | |
313 | if (err) { | |
314 | DEBUG2(printk(KERN_ERR "Could not add session.\n")); | |
315 | return err; | |
316 | } | |
317 | ||
318 | ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0); | |
319 | if (!ddb_entry->conn) { | |
320 | iscsi_remove_session(ddb_entry->sess); | |
321 | DEBUG2(printk(KERN_ERR "Could not add connection.\n")); | |
322 | return -ENOMEM; | |
323 | } | |
324 | ||
325 | ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count; | |
326 | iscsi_if_create_session_done(ddb_entry->conn); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) | |
331 | { | |
332 | struct ddb_entry *ddb_entry; | |
333 | struct iscsi_cls_session *sess; | |
334 | ||
335 | sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport); | |
336 | if (!sess) | |
337 | return NULL; | |
338 | ||
339 | ddb_entry = sess->dd_data; | |
340 | memset(ddb_entry, 0, sizeof(*ddb_entry)); | |
341 | ddb_entry->ha = ha; | |
342 | ddb_entry->sess = sess; | |
343 | return ddb_entry; | |
344 | } | |
345 | ||
346 | /* | |
347 | * Timer routines | |
348 | */ | |
349 | ||
350 | static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, | |
351 | unsigned long interval) | |
352 | { | |
353 | DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", | |
354 | __func__, ha->host->host_no)); | |
355 | init_timer(&ha->timer); | |
356 | ha->timer.expires = jiffies + interval * HZ; | |
357 | ha->timer.data = (unsigned long)ha; | |
358 | ha->timer.function = (void (*)(unsigned long))func; | |
359 | add_timer(&ha->timer); | |
360 | ha->timer_active = 1; | |
361 | } | |
362 | ||
363 | static void qla4xxx_stop_timer(struct scsi_qla_host *ha) | |
364 | { | |
365 | del_timer_sync(&ha->timer); | |
366 | ha->timer_active = 0; | |
367 | } | |
368 | ||
369 | /*** | |
370 | * qla4xxx_mark_device_missing - mark a device as missing. | |
371 | * @ha: Pointer to host adapter structure. | |
372 | * @ddb_entry: Pointer to device database entry | |
373 | * | |
374 | * This routine marks a device missing and resets the relogin retry count. | |
375 | **/ | |
376 | void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, | |
377 | struct ddb_entry *ddb_entry) | |
378 | { | |
379 | atomic_set(&ddb_entry->state, DDB_STATE_MISSING); | |
380 | DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n", | |
381 | ha->host_no, ddb_entry->bus, ddb_entry->target, | |
382 | ddb_entry->fw_ddb_index)); | |
383 | iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); | |
384 | } | |
385 | ||
386 | static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, | |
387 | struct ddb_entry *ddb_entry, | |
388 | struct scsi_cmnd *cmd, | |
389 | void (*done)(struct scsi_cmnd *)) | |
390 | { | |
391 | struct srb *srb; | |
392 | ||
393 | srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
394 | if (!srb) | |
395 | return srb; | |
396 | ||
397 | atomic_set(&srb->ref_count, 1); | |
398 | srb->ha = ha; | |
399 | srb->ddb = ddb_entry; | |
400 | srb->cmd = cmd; | |
401 | srb->flags = 0; | |
402 | cmd->SCp.ptr = (void *)srb; | |
403 | cmd->scsi_done = done; | |
404 | ||
405 | return srb; | |
406 | } | |
407 | ||
408 | static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) | |
409 | { | |
410 | struct scsi_cmnd *cmd = srb->cmd; | |
411 | ||
412 | if (srb->flags & SRB_DMA_VALID) { | |
5f7186c8 | 413 | scsi_dma_unmap(cmd); |
afaf5a2d DS |
414 | srb->flags &= ~SRB_DMA_VALID; |
415 | } | |
416 | cmd->SCp.ptr = NULL; | |
417 | } | |
418 | ||
419 | void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb) | |
420 | { | |
421 | struct scsi_cmnd *cmd = srb->cmd; | |
422 | ||
423 | qla4xxx_srb_free_dma(ha, srb); | |
424 | ||
425 | mempool_free(srb, ha->srb_mempool); | |
426 | ||
427 | cmd->scsi_done(cmd); | |
428 | } | |
429 | ||
430 | /** | |
431 | * qla4xxx_queuecommand - scsi layer issues scsi command to driver. | |
432 | * @cmd: Pointer to Linux's SCSI command structure | |
433 | * @done_fn: Function that the driver calls to notify the SCSI mid-layer | |
434 | * that the command has been processed. | |
435 | * | |
436 | * Remarks: | |
437 | * This routine is invoked by Linux to send a SCSI command to the driver. | |
438 | * The mid-level driver tries to ensure that queuecommand never gets | |
439 | * invoked concurrently with itself or the interrupt handler (although | |
440 | * the interrupt handler may call this routine as part of request- | |
441 | * completion handling). Unfortunely, it sometimes calls the scheduler | |
442 | * in interrupt context which is a big NO! NO!. | |
443 | **/ | |
444 | static int qla4xxx_queuecommand(struct scsi_cmnd *cmd, | |
445 | void (*done)(struct scsi_cmnd *)) | |
446 | { | |
447 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
448 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
449 | struct srb *srb; | |
450 | int rval; | |
451 | ||
452 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
453 | if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { | |
454 | cmd->result = DID_NO_CONNECT << 16; | |
455 | goto qc_fail_command; | |
456 | } | |
457 | goto qc_host_busy; | |
458 | } | |
459 | ||
477ffb9d DS |
460 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) |
461 | goto qc_host_busy; | |
462 | ||
afaf5a2d DS |
463 | spin_unlock_irq(ha->host->host_lock); |
464 | ||
465 | srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); | |
466 | if (!srb) | |
467 | goto qc_host_busy_lock; | |
468 | ||
469 | rval = qla4xxx_send_command_to_isp(ha, srb); | |
470 | if (rval != QLA_SUCCESS) | |
471 | goto qc_host_busy_free_sp; | |
472 | ||
473 | spin_lock_irq(ha->host->host_lock); | |
474 | return 0; | |
475 | ||
476 | qc_host_busy_free_sp: | |
477 | qla4xxx_srb_free_dma(ha, srb); | |
478 | mempool_free(srb, ha->srb_mempool); | |
479 | ||
480 | qc_host_busy_lock: | |
481 | spin_lock_irq(ha->host->host_lock); | |
482 | ||
483 | qc_host_busy: | |
484 | return SCSI_MLQUEUE_HOST_BUSY; | |
485 | ||
486 | qc_fail_command: | |
487 | done(cmd); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | /** | |
493 | * qla4xxx_mem_free - frees memory allocated to adapter | |
494 | * @ha: Pointer to host adapter structure. | |
495 | * | |
496 | * Frees memory previously allocated by qla4xxx_mem_alloc | |
497 | **/ | |
498 | static void qla4xxx_mem_free(struct scsi_qla_host *ha) | |
499 | { | |
500 | if (ha->queues) | |
501 | dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, | |
502 | ha->queues_dma); | |
503 | ||
504 | ha->queues_len = 0; | |
505 | ha->queues = NULL; | |
506 | ha->queues_dma = 0; | |
507 | ha->request_ring = NULL; | |
508 | ha->request_dma = 0; | |
509 | ha->response_ring = NULL; | |
510 | ha->response_dma = 0; | |
511 | ha->shadow_regs = NULL; | |
512 | ha->shadow_regs_dma = 0; | |
513 | ||
514 | /* Free srb pool. */ | |
515 | if (ha->srb_mempool) | |
516 | mempool_destroy(ha->srb_mempool); | |
517 | ||
518 | ha->srb_mempool = NULL; | |
519 | ||
520 | /* release io space registers */ | |
521 | if (ha->reg) | |
522 | iounmap(ha->reg); | |
523 | pci_release_regions(ha->pdev); | |
524 | } | |
525 | ||
526 | /** | |
527 | * qla4xxx_mem_alloc - allocates memory for use by adapter. | |
528 | * @ha: Pointer to host adapter structure | |
529 | * | |
530 | * Allocates DMA memory for request and response queues. Also allocates memory | |
531 | * for srbs. | |
532 | **/ | |
533 | static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) | |
534 | { | |
535 | unsigned long align; | |
536 | ||
537 | /* Allocate contiguous block of DMA memory for queues. */ | |
538 | ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
539 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + | |
540 | sizeof(struct shadow_regs) + | |
541 | MEM_ALIGN_VALUE + | |
542 | (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); | |
543 | ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, | |
544 | &ha->queues_dma, GFP_KERNEL); | |
545 | if (ha->queues == NULL) { | |
546 | dev_warn(&ha->pdev->dev, | |
547 | "Memory Allocation failed - queues.\n"); | |
548 | ||
549 | goto mem_alloc_error_exit; | |
550 | } | |
551 | memset(ha->queues, 0, ha->queues_len); | |
552 | ||
553 | /* | |
554 | * As per RISC alignment requirements -- the bus-address must be a | |
555 | * multiple of the request-ring size (in bytes). | |
556 | */ | |
557 | align = 0; | |
558 | if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) | |
559 | align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & | |
560 | (MEM_ALIGN_VALUE - 1)); | |
561 | ||
562 | /* Update request and response queue pointers. */ | |
563 | ha->request_dma = ha->queues_dma + align; | |
564 | ha->request_ring = (struct queue_entry *) (ha->queues + align); | |
565 | ha->response_dma = ha->queues_dma + align + | |
566 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); | |
567 | ha->response_ring = (struct queue_entry *) (ha->queues + align + | |
568 | (REQUEST_QUEUE_DEPTH * | |
569 | QUEUE_SIZE)); | |
570 | ha->shadow_regs_dma = ha->queues_dma + align + | |
571 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
572 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); | |
573 | ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + | |
574 | (REQUEST_QUEUE_DEPTH * | |
575 | QUEUE_SIZE) + | |
576 | (RESPONSE_QUEUE_DEPTH * | |
577 | QUEUE_SIZE)); | |
578 | ||
579 | /* Allocate memory for srb pool. */ | |
580 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
581 | mempool_free_slab, srb_cachep); | |
582 | if (ha->srb_mempool == NULL) { | |
583 | dev_warn(&ha->pdev->dev, | |
584 | "Memory Allocation failed - SRB Pool.\n"); | |
585 | ||
586 | goto mem_alloc_error_exit; | |
587 | } | |
588 | ||
589 | return QLA_SUCCESS; | |
590 | ||
591 | mem_alloc_error_exit: | |
592 | qla4xxx_mem_free(ha); | |
593 | return QLA_ERROR; | |
594 | } | |
595 | ||
596 | /** | |
597 | * qla4xxx_timer - checks every second for work to do. | |
598 | * @ha: Pointer to host adapter structure. | |
599 | **/ | |
600 | static void qla4xxx_timer(struct scsi_qla_host *ha) | |
601 | { | |
602 | struct ddb_entry *ddb_entry, *dtemp; | |
603 | int start_dpc = 0; | |
604 | ||
605 | /* Search for relogin's to time-out and port down retry. */ | |
606 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
607 | /* Count down time between sending relogins */ | |
608 | if (adapter_up(ha) && | |
609 | !test_bit(DF_RELOGIN, &ddb_entry->flags) && | |
610 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
611 | if (atomic_read(&ddb_entry->retry_relogin_timer) != | |
612 | INVALID_ENTRY) { | |
613 | if (atomic_read(&ddb_entry->retry_relogin_timer) | |
614 | == 0) { | |
615 | atomic_set(&ddb_entry-> | |
616 | retry_relogin_timer, | |
617 | INVALID_ENTRY); | |
618 | set_bit(DPC_RELOGIN_DEVICE, | |
619 | &ha->dpc_flags); | |
620 | set_bit(DF_RELOGIN, &ddb_entry->flags); | |
621 | DEBUG2(printk("scsi%ld: %s: index [%d]" | |
622 | " login device\n", | |
623 | ha->host_no, __func__, | |
624 | ddb_entry->fw_ddb_index)); | |
625 | } else | |
626 | atomic_dec(&ddb_entry-> | |
627 | retry_relogin_timer); | |
628 | } | |
629 | } | |
630 | ||
631 | /* Wait for relogin to timeout */ | |
632 | if (atomic_read(&ddb_entry->relogin_timer) && | |
633 | (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { | |
634 | /* | |
635 | * If the relogin times out and the device is | |
636 | * still NOT ONLINE then try and relogin again. | |
637 | */ | |
638 | if (atomic_read(&ddb_entry->state) != | |
639 | DDB_STATE_ONLINE && | |
640 | ddb_entry->fw_ddb_device_state == | |
641 | DDB_DS_SESSION_FAILED) { | |
642 | /* Reset retry relogin timer */ | |
643 | atomic_inc(&ddb_entry->relogin_retry_count); | |
644 | DEBUG2(printk("scsi%ld: index[%d] relogin" | |
645 | " timed out-retrying" | |
646 | " relogin (%d)\n", | |
647 | ha->host_no, | |
648 | ddb_entry->fw_ddb_index, | |
649 | atomic_read(&ddb_entry-> | |
650 | relogin_retry_count)) | |
651 | ); | |
652 | start_dpc++; | |
653 | DEBUG(printk("scsi%ld:%d:%d: index [%d] " | |
654 | "initate relogin after" | |
655 | " %d seconds\n", | |
656 | ha->host_no, ddb_entry->bus, | |
657 | ddb_entry->target, | |
658 | ddb_entry->fw_ddb_index, | |
659 | ddb_entry->default_time2wait + 4) | |
660 | ); | |
661 | ||
662 | atomic_set(&ddb_entry->retry_relogin_timer, | |
663 | ddb_entry->default_time2wait + 4); | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
668 | /* Check for heartbeat interval. */ | |
669 | if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && | |
670 | ha->heartbeat_interval != 0) { | |
671 | ha->seconds_since_last_heartbeat++; | |
672 | if (ha->seconds_since_last_heartbeat > | |
673 | ha->heartbeat_interval + 2) | |
674 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
675 | } | |
676 | ||
677 | ||
678 | /* Wakeup the dpc routine for this adapter, if needed. */ | |
679 | if ((start_dpc || | |
680 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
681 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || | |
682 | test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || | |
683 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || | |
684 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
685 | test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || | |
686 | test_bit(DPC_AEN, &ha->dpc_flags)) && | |
687 | ha->dpc_thread) { | |
688 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" | |
689 | " - dpc flags = 0x%lx\n", | |
690 | ha->host_no, __func__, ha->dpc_flags)); | |
691 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
692 | } | |
693 | ||
694 | /* Reschedule timer thread to call us back in one second */ | |
695 | mod_timer(&ha->timer, jiffies + HZ); | |
696 | ||
697 | DEBUG2(ha->seconds_since_last_intr++); | |
698 | } | |
699 | ||
700 | /** | |
701 | * qla4xxx_cmd_wait - waits for all outstanding commands to complete | |
702 | * @ha: Pointer to host adapter structure. | |
703 | * | |
704 | * This routine stalls the driver until all outstanding commands are returned. | |
705 | * Caller must release the Hardware Lock prior to calling this routine. | |
706 | **/ | |
707 | static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) | |
708 | { | |
709 | uint32_t index = 0; | |
710 | int stat = QLA_SUCCESS; | |
711 | unsigned long flags; | |
712 | struct scsi_cmnd *cmd; | |
713 | int wait_cnt = WAIT_CMD_TOV; /* | |
714 | * Initialized for 30 seconds as we | |
715 | * expect all commands to retuned | |
716 | * ASAP. | |
717 | */ | |
718 | ||
719 | while (wait_cnt) { | |
720 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
721 | /* Find a command that hasn't completed. */ | |
722 | for (index = 0; index < ha->host->can_queue; index++) { | |
723 | cmd = scsi_host_find_tag(ha->host, index); | |
724 | if (cmd != NULL) | |
725 | break; | |
726 | } | |
727 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
728 | ||
729 | /* If No Commands are pending, wait is complete */ | |
730 | if (index == ha->host->can_queue) { | |
731 | break; | |
732 | } | |
733 | ||
734 | /* If we timed out on waiting for commands to come back | |
735 | * return ERROR. | |
736 | */ | |
737 | wait_cnt--; | |
738 | if (wait_cnt == 0) | |
739 | stat = QLA_ERROR; | |
740 | else { | |
741 | msleep(1000); | |
742 | } | |
743 | } /* End of While (wait_cnt) */ | |
744 | ||
745 | return stat; | |
746 | } | |
747 | ||
bee4fe8e | 748 | void qla4xxx_hw_reset(struct scsi_qla_host *ha) |
afaf5a2d | 749 | { |
afaf5a2d | 750 | uint32_t ctrl_status; |
477ffb9d DS |
751 | unsigned long flags = 0; |
752 | ||
753 | DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); | |
afaf5a2d DS |
754 | |
755 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
756 | ||
757 | /* | |
758 | * If the SCSI Reset Interrupt bit is set, clear it. | |
759 | * Otherwise, the Soft Reset won't work. | |
760 | */ | |
761 | ctrl_status = readw(&ha->reg->ctrl_status); | |
762 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) | |
763 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
764 | ||
765 | /* Issue Soft Reset */ | |
766 | writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); | |
767 | readl(&ha->reg->ctrl_status); | |
768 | ||
769 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
477ffb9d DS |
770 | } |
771 | ||
772 | /** | |
773 | * qla4xxx_soft_reset - performs soft reset. | |
774 | * @ha: Pointer to host adapter structure. | |
775 | **/ | |
776 | int qla4xxx_soft_reset(struct scsi_qla_host *ha) | |
777 | { | |
778 | uint32_t max_wait_time; | |
779 | unsigned long flags = 0; | |
780 | int status = QLA_ERROR; | |
781 | uint32_t ctrl_status; | |
782 | ||
783 | qla4xxx_hw_reset(ha); | |
afaf5a2d DS |
784 | |
785 | /* Wait until the Network Reset Intr bit is cleared */ | |
786 | max_wait_time = RESET_INTR_TOV; | |
787 | do { | |
788 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
789 | ctrl_status = readw(&ha->reg->ctrl_status); | |
790 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
791 | ||
792 | if ((ctrl_status & CSR_NET_RESET_INTR) == 0) | |
793 | break; | |
794 | ||
795 | msleep(1000); | |
796 | } while ((--max_wait_time)); | |
797 | ||
798 | if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { | |
799 | DEBUG2(printk(KERN_WARNING | |
800 | "scsi%ld: Network Reset Intr not cleared by " | |
801 | "Network function, clearing it now!\n", | |
802 | ha->host_no)); | |
803 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
804 | writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); | |
805 | readl(&ha->reg->ctrl_status); | |
806 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
807 | } | |
808 | ||
809 | /* Wait until the firmware tells us the Soft Reset is done */ | |
810 | max_wait_time = SOFT_RESET_TOV; | |
811 | do { | |
812 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
813 | ctrl_status = readw(&ha->reg->ctrl_status); | |
814 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
815 | ||
816 | if ((ctrl_status & CSR_SOFT_RESET) == 0) { | |
817 | status = QLA_SUCCESS; | |
818 | break; | |
819 | } | |
820 | ||
821 | msleep(1000); | |
822 | } while ((--max_wait_time)); | |
823 | ||
824 | /* | |
825 | * Also, make sure that the SCSI Reset Interrupt bit has been cleared | |
826 | * after the soft reset has taken place. | |
827 | */ | |
828 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
829 | ctrl_status = readw(&ha->reg->ctrl_status); | |
830 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { | |
831 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
832 | readl(&ha->reg->ctrl_status); | |
833 | } | |
834 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
835 | ||
836 | /* If soft reset fails then most probably the bios on other | |
837 | * function is also enabled. | |
838 | * Since the initialization is sequential the other fn | |
839 | * wont be able to acknowledge the soft reset. | |
840 | * Issue a force soft reset to workaround this scenario. | |
841 | */ | |
842 | if (max_wait_time == 0) { | |
843 | /* Issue Force Soft Reset */ | |
844 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
845 | writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); | |
846 | readl(&ha->reg->ctrl_status); | |
847 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
848 | /* Wait until the firmware tells us the Soft Reset is done */ | |
849 | max_wait_time = SOFT_RESET_TOV; | |
850 | do { | |
851 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
852 | ctrl_status = readw(&ha->reg->ctrl_status); | |
853 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
854 | ||
855 | if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { | |
856 | status = QLA_SUCCESS; | |
857 | break; | |
858 | } | |
859 | ||
860 | msleep(1000); | |
861 | } while ((--max_wait_time)); | |
862 | } | |
863 | ||
864 | return status; | |
865 | } | |
866 | ||
afaf5a2d DS |
867 | /** |
868 | * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S. | |
869 | * @ha: Pointer to host adapter structure. | |
870 | * | |
871 | * This routine is called just prior to a HARD RESET to return all | |
872 | * outstanding commands back to the Operating System. | |
873 | * Caller should make sure that the following locks are released | |
874 | * before this calling routine: Hardware lock, and io_request_lock. | |
875 | **/ | |
876 | static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha) | |
877 | { | |
878 | struct srb *srb; | |
879 | int i; | |
880 | unsigned long flags; | |
881 | ||
882 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
883 | for (i = 0; i < ha->host->can_queue; i++) { | |
884 | srb = qla4xxx_del_from_active_array(ha, i); | |
885 | if (srb != NULL) { | |
886 | srb->cmd->result = DID_RESET << 16; | |
887 | qla4xxx_srb_compl(ha, srb); | |
888 | } | |
889 | } | |
890 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
891 | ||
892 | } | |
893 | ||
afaf5a2d DS |
894 | /** |
895 | * qla4xxx_recover_adapter - recovers adapter after a fatal error | |
896 | * @ha: Pointer to host adapter structure. | |
897 | * @renew_ddb_list: Indicates what to do with the adapter's ddb list | |
898 | * after adapter recovery has completed. | |
899 | * 0=preserve ddb list, 1=destroy and rebuild ddb list | |
900 | **/ | |
901 | static int qla4xxx_recover_adapter(struct scsi_qla_host *ha, | |
902 | uint8_t renew_ddb_list) | |
903 | { | |
904 | int status; | |
905 | ||
906 | /* Stall incoming I/O until we are done */ | |
907 | clear_bit(AF_ONLINE, &ha->flags); | |
908 | DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no, | |
909 | __func__)); | |
910 | ||
911 | /* Wait for outstanding commands to complete. | |
912 | * Stalls the driver for max 30 secs | |
913 | */ | |
914 | status = qla4xxx_cmd_wait(ha); | |
915 | ||
916 | qla4xxx_disable_intrs(ha); | |
917 | ||
918 | /* Flush any pending ddb changed AENs */ | |
919 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
920 | ||
921 | /* Reset the firmware. If successful, function | |
922 | * returns with ISP interrupts enabled. | |
923 | */ | |
924 | if (status == QLA_SUCCESS) { | |
925 | DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n", | |
926 | ha->host_no, __func__)); | |
f26b9044 DS |
927 | qla4xxx_flush_active_srbs(ha); |
928 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) | |
929 | status = qla4xxx_soft_reset(ha); | |
930 | else | |
931 | status = QLA_ERROR; | |
afaf5a2d DS |
932 | } |
933 | ||
934 | /* Flush any pending ddb changed AENs */ | |
935 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
936 | ||
937 | /* Re-initialize firmware. If successful, function returns | |
938 | * with ISP interrupts enabled */ | |
939 | if (status == QLA_SUCCESS) { | |
940 | DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n", | |
941 | ha->host_no, __func__)); | |
942 | ||
943 | /* If successful, AF_ONLINE flag set in | |
944 | * qla4xxx_initialize_adapter */ | |
945 | status = qla4xxx_initialize_adapter(ha, renew_ddb_list); | |
946 | } | |
947 | ||
948 | /* Failed adapter initialization? | |
949 | * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */ | |
950 | if ((test_bit(AF_ONLINE, &ha->flags) == 0) && | |
951 | (test_bit(DPC_RESET_HA, &ha->dpc_flags))) { | |
952 | /* Adapter initialization failed, see if we can retry | |
953 | * resetting the ha */ | |
954 | if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { | |
955 | ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; | |
956 | DEBUG2(printk("scsi%ld: recover adapter - retrying " | |
957 | "(%d) more times\n", ha->host_no, | |
958 | ha->retry_reset_ha_cnt)); | |
959 | set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
960 | status = QLA_ERROR; | |
961 | } else { | |
962 | if (ha->retry_reset_ha_cnt > 0) { | |
963 | /* Schedule another Reset HA--DPC will retry */ | |
964 | ha->retry_reset_ha_cnt--; | |
965 | DEBUG2(printk("scsi%ld: recover adapter - " | |
966 | "retry remaining %d\n", | |
967 | ha->host_no, | |
968 | ha->retry_reset_ha_cnt)); | |
969 | status = QLA_ERROR; | |
970 | } | |
971 | ||
972 | if (ha->retry_reset_ha_cnt == 0) { | |
973 | /* Recover adapter retries have been exhausted. | |
974 | * Adapter DEAD */ | |
975 | DEBUG2(printk("scsi%ld: recover adapter " | |
976 | "failed - board disabled\n", | |
977 | ha->host_no)); | |
978 | qla4xxx_flush_active_srbs(ha); | |
979 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
980 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
981 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, | |
982 | &ha->dpc_flags); | |
983 | status = QLA_ERROR; | |
984 | } | |
985 | } | |
986 | } else { | |
987 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
988 | clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags); | |
989 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
990 | } | |
991 | ||
992 | ha->adapter_error_count++; | |
993 | ||
994 | if (status == QLA_SUCCESS) | |
995 | qla4xxx_enable_intrs(ha); | |
996 | ||
997 | DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no)); | |
998 | return status; | |
999 | } | |
1000 | ||
1001 | /** | |
1002 | * qla4xxx_do_dpc - dpc routine | |
1003 | * @data: in our case pointer to adapter structure | |
1004 | * | |
1005 | * This routine is a task that is schedule by the interrupt handler | |
1006 | * to perform the background processing for interrupts. We put it | |
1007 | * on a task queue that is consumed whenever the scheduler runs; that's | |
1008 | * so you can do anything (i.e. put the process to sleep etc). In fact, | |
1009 | * the mid-level tries to sleep when it reaches the driver threshold | |
1010 | * "host->can_queue". This can cause a panic if we were in our interrupt code. | |
1011 | **/ | |
c4028958 | 1012 | static void qla4xxx_do_dpc(struct work_struct *work) |
afaf5a2d | 1013 | { |
c4028958 DH |
1014 | struct scsi_qla_host *ha = |
1015 | container_of(work, struct scsi_qla_host, dpc_work); | |
afaf5a2d | 1016 | struct ddb_entry *ddb_entry, *dtemp; |
477ffb9d | 1017 | int status = QLA_ERROR; |
afaf5a2d | 1018 | |
f26b9044 | 1019 | DEBUG2(printk("scsi%ld: %s: DPC handler waking up." |
477ffb9d DS |
1020 | "flags = 0x%08lx, dpc_flags = 0x%08lx ctrl_stat = 0x%08x\n", |
1021 | ha->host_no, __func__, ha->flags, ha->dpc_flags, | |
1022 | readw(&ha->reg->ctrl_status))); | |
afaf5a2d DS |
1023 | |
1024 | /* Initialization not yet finished. Don't do anything yet. */ | |
1025 | if (!test_bit(AF_INIT_DONE, &ha->flags)) | |
1026 | return; | |
1027 | ||
1028 | if (adapter_up(ha) || | |
1029 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
1030 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || | |
1031 | test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) { | |
f26b9044 DS |
1032 | if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) || |
1033 | test_bit(DPC_RESET_HA, &ha->dpc_flags)) | |
afaf5a2d DS |
1034 | qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST); |
1035 | ||
477ffb9d | 1036 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
afaf5a2d | 1037 | uint8_t wait_time = RESET_INTR_TOV; |
afaf5a2d | 1038 | |
afaf5a2d DS |
1039 | while ((readw(&ha->reg->ctrl_status) & |
1040 | (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { | |
1041 | if (--wait_time == 0) | |
1042 | break; | |
afaf5a2d | 1043 | msleep(1000); |
afaf5a2d | 1044 | } |
afaf5a2d DS |
1045 | if (wait_time == 0) |
1046 | DEBUG2(printk("scsi%ld: %s: SR|FSR " | |
1047 | "bit not cleared-- resetting\n", | |
1048 | ha->host_no, __func__)); | |
477ffb9d DS |
1049 | qla4xxx_flush_active_srbs(ha); |
1050 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { | |
1051 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1052 | status = qla4xxx_initialize_adapter(ha, | |
1053 | PRESERVE_DDB_LIST); | |
1054 | } | |
1055 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1056 | if (status == QLA_SUCCESS) | |
1057 | qla4xxx_enable_intrs(ha); | |
afaf5a2d DS |
1058 | } |
1059 | } | |
1060 | ||
1061 | /* ---- process AEN? --- */ | |
1062 | if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) | |
1063 | qla4xxx_process_aen(ha, PROCESS_ALL_AENS); | |
1064 | ||
1065 | /* ---- Get DHCP IP Address? --- */ | |
1066 | if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) | |
1067 | qla4xxx_get_dhcp_ip_address(ha); | |
1068 | ||
1069 | /* ---- relogin device? --- */ | |
1070 | if (adapter_up(ha) && | |
1071 | test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { | |
1072 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1073 | &ha->ddb_list, list) { | |
1074 | if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && | |
1075 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
1076 | qla4xxx_relogin_device(ha, ddb_entry); | |
1077 | ||
1078 | /* | |
1079 | * If mbx cmd times out there is no point | |
1080 | * in continuing further. | |
1081 | * With large no of targets this can hang | |
1082 | * the system. | |
1083 | */ | |
1084 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
1085 | printk(KERN_WARNING "scsi%ld: %s: " | |
1086 | "need to reset hba\n", | |
1087 | ha->host_no, __func__); | |
1088 | break; | |
1089 | } | |
1090 | } | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | /** | |
1095 | * qla4xxx_free_adapter - release the adapter | |
1096 | * @ha: pointer to adapter structure | |
1097 | **/ | |
1098 | static void qla4xxx_free_adapter(struct scsi_qla_host *ha) | |
1099 | { | |
1100 | ||
1101 | if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { | |
1102 | /* Turn-off interrupts on the card. */ | |
1103 | qla4xxx_disable_intrs(ha); | |
1104 | } | |
1105 | ||
1106 | /* Kill the kernel thread for this host */ | |
1107 | if (ha->dpc_thread) | |
1108 | destroy_workqueue(ha->dpc_thread); | |
1109 | ||
1110 | /* Issue Soft Reset to put firmware in unknown state */ | |
f26b9044 | 1111 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) |
477ffb9d | 1112 | qla4xxx_hw_reset(ha); |
afaf5a2d DS |
1113 | |
1114 | /* Remove timer thread, if present */ | |
1115 | if (ha->timer_active) | |
1116 | qla4xxx_stop_timer(ha); | |
1117 | ||
afaf5a2d DS |
1118 | /* Detach interrupts */ |
1119 | if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) | |
1120 | free_irq(ha->pdev->irq, ha); | |
1121 | ||
bee4fe8e DS |
1122 | /* free extra memory */ |
1123 | qla4xxx_mem_free(ha); | |
1124 | ||
afaf5a2d DS |
1125 | pci_disable_device(ha->pdev); |
1126 | ||
1127 | } | |
1128 | ||
1129 | /*** | |
1130 | * qla4xxx_iospace_config - maps registers | |
1131 | * @ha: pointer to adapter structure | |
1132 | * | |
1133 | * This routines maps HBA's registers from the pci address space | |
1134 | * into the kernel virtual address space for memory mapped i/o. | |
1135 | **/ | |
1136 | static int qla4xxx_iospace_config(struct scsi_qla_host *ha) | |
1137 | { | |
1138 | unsigned long pio, pio_len, pio_flags; | |
1139 | unsigned long mmio, mmio_len, mmio_flags; | |
1140 | ||
1141 | pio = pci_resource_start(ha->pdev, 0); | |
1142 | pio_len = pci_resource_len(ha->pdev, 0); | |
1143 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1144 | if (pio_flags & IORESOURCE_IO) { | |
1145 | if (pio_len < MIN_IOBASE_LEN) { | |
1146 | dev_warn(&ha->pdev->dev, | |
1147 | "Invalid PCI I/O region size\n"); | |
1148 | pio = 0; | |
1149 | } | |
1150 | } else { | |
1151 | dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n"); | |
1152 | pio = 0; | |
1153 | } | |
1154 | ||
1155 | /* Use MMIO operations for all accesses. */ | |
1156 | mmio = pci_resource_start(ha->pdev, 1); | |
1157 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1158 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1159 | ||
1160 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
1161 | dev_err(&ha->pdev->dev, | |
1162 | "region #0 not an MMIO resource, aborting\n"); | |
1163 | ||
1164 | goto iospace_error_exit; | |
1165 | } | |
1166 | if (mmio_len < MIN_IOBASE_LEN) { | |
1167 | dev_err(&ha->pdev->dev, | |
1168 | "Invalid PCI mem region size, aborting\n"); | |
1169 | goto iospace_error_exit; | |
1170 | } | |
1171 | ||
1172 | if (pci_request_regions(ha->pdev, DRIVER_NAME)) { | |
1173 | dev_warn(&ha->pdev->dev, | |
1174 | "Failed to reserve PIO/MMIO regions\n"); | |
1175 | ||
1176 | goto iospace_error_exit; | |
1177 | } | |
1178 | ||
1179 | ha->pio_address = pio; | |
1180 | ha->pio_length = pio_len; | |
1181 | ha->reg = ioremap(mmio, MIN_IOBASE_LEN); | |
1182 | if (!ha->reg) { | |
1183 | dev_err(&ha->pdev->dev, | |
1184 | "cannot remap MMIO, aborting\n"); | |
1185 | ||
1186 | goto iospace_error_exit; | |
1187 | } | |
1188 | ||
1189 | return 0; | |
1190 | ||
1191 | iospace_error_exit: | |
1192 | return -ENOMEM; | |
1193 | } | |
1194 | ||
1195 | /** | |
1196 | * qla4xxx_probe_adapter - callback function to probe HBA | |
1197 | * @pdev: pointer to pci_dev structure | |
1198 | * @pci_device_id: pointer to pci_device entry | |
1199 | * | |
1200 | * This routine will probe for Qlogic 4xxx iSCSI host adapters. | |
1201 | * It returns zero if successful. It also initializes all data necessary for | |
1202 | * the driver. | |
1203 | **/ | |
1204 | static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, | |
1205 | const struct pci_device_id *ent) | |
1206 | { | |
1207 | int ret = -ENODEV, status; | |
1208 | struct Scsi_Host *host; | |
1209 | struct scsi_qla_host *ha; | |
1210 | struct ddb_entry *ddb_entry, *ddbtemp; | |
1211 | uint8_t init_retry_count = 0; | |
1212 | char buf[34]; | |
1213 | ||
1214 | if (pci_enable_device(pdev)) | |
1215 | return -1; | |
1216 | ||
1217 | host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); | |
1218 | if (host == NULL) { | |
1219 | printk(KERN_WARNING | |
1220 | "qla4xxx: Couldn't allocate host from scsi layer!\n"); | |
1221 | goto probe_disable_device; | |
1222 | } | |
1223 | ||
1224 | /* Clear our data area */ | |
1225 | ha = (struct scsi_qla_host *) host->hostdata; | |
1226 | memset(ha, 0, sizeof(*ha)); | |
1227 | ||
1228 | /* Save the information from PCI BIOS. */ | |
1229 | ha->pdev = pdev; | |
1230 | ha->host = host; | |
1231 | ha->host_no = host->host_no; | |
1232 | ||
1233 | /* Configure PCI I/O space. */ | |
1234 | ret = qla4xxx_iospace_config(ha); | |
1235 | if (ret) | |
1236 | goto probe_failed; | |
1237 | ||
1238 | dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n", | |
1239 | pdev->device, pdev->irq, ha->reg); | |
1240 | ||
1241 | qla4xxx_config_dma_addressing(ha); | |
1242 | ||
1243 | /* Initialize lists and spinlocks. */ | |
1244 | INIT_LIST_HEAD(&ha->ddb_list); | |
1245 | INIT_LIST_HEAD(&ha->free_srb_q); | |
1246 | ||
1247 | mutex_init(&ha->mbox_sem); | |
afaf5a2d DS |
1248 | |
1249 | spin_lock_init(&ha->hardware_lock); | |
afaf5a2d DS |
1250 | |
1251 | /* Allocate dma buffers */ | |
1252 | if (qla4xxx_mem_alloc(ha)) { | |
1253 | dev_warn(&ha->pdev->dev, | |
1254 | "[ERROR] Failed to allocate memory for adapter\n"); | |
1255 | ||
1256 | ret = -ENOMEM; | |
1257 | goto probe_failed; | |
1258 | } | |
1259 | ||
1260 | /* | |
1261 | * Initialize the Host adapter request/response queues and | |
1262 | * firmware | |
1263 | * NOTE: interrupts enabled upon successful completion | |
1264 | */ | |
1265 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1266 | while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) { | |
1267 | DEBUG2(printk("scsi: %s: retrying adapter initialization " | |
1268 | "(%d)\n", __func__, init_retry_count)); | |
1269 | qla4xxx_soft_reset(ha); | |
1270 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
1271 | } | |
1272 | if (status == QLA_ERROR) { | |
1273 | dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n"); | |
1274 | ||
1275 | ret = -ENODEV; | |
1276 | goto probe_failed; | |
1277 | } | |
1278 | ||
1279 | host->cmd_per_lun = 3; | |
1280 | host->max_channel = 0; | |
1281 | host->max_lun = MAX_LUNS - 1; | |
1282 | host->max_id = MAX_TARGETS; | |
1283 | host->max_cmd_len = IOCB_MAX_CDB_LEN; | |
1284 | host->can_queue = MAX_SRBS ; | |
1285 | host->transportt = qla4xxx_scsi_transport; | |
1286 | ||
1287 | ret = scsi_init_shared_tag_map(host, MAX_SRBS); | |
1288 | if (ret) { | |
898eb71c | 1289 | dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed\n"); |
afaf5a2d DS |
1290 | goto probe_failed; |
1291 | } | |
1292 | ||
1293 | /* Startup the kernel thread for this host adapter. */ | |
1294 | DEBUG2(printk("scsi: %s: Starting kernel thread for " | |
1295 | "qla4xxx_dpc\n", __func__)); | |
1296 | sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); | |
1297 | ha->dpc_thread = create_singlethread_workqueue(buf); | |
1298 | if (!ha->dpc_thread) { | |
1299 | dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n"); | |
1300 | ret = -ENODEV; | |
1301 | goto probe_failed; | |
1302 | } | |
c4028958 | 1303 | INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); |
afaf5a2d DS |
1304 | |
1305 | ret = request_irq(pdev->irq, qla4xxx_intr_handler, | |
38515e90 | 1306 | IRQF_DISABLED | IRQF_SHARED, "qla4xxx", ha); |
afaf5a2d DS |
1307 | if (ret) { |
1308 | dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d" | |
1309 | " already in use.\n", pdev->irq); | |
1310 | goto probe_failed; | |
1311 | } | |
1312 | set_bit(AF_IRQ_ATTACHED, &ha->flags); | |
1313 | host->irq = pdev->irq; | |
1314 | DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq)); | |
1315 | ||
1316 | qla4xxx_enable_intrs(ha); | |
1317 | ||
1318 | /* Start timer thread. */ | |
1319 | qla4xxx_start_timer(ha, qla4xxx_timer, 1); | |
1320 | ||
1321 | set_bit(AF_INIT_DONE, &ha->flags); | |
1322 | ||
1323 | pci_set_drvdata(pdev, ha); | |
1324 | ||
1325 | ret = scsi_add_host(host, &pdev->dev); | |
1326 | if (ret) | |
1327 | goto probe_failed; | |
1328 | ||
1329 | /* Update transport device information for all devices. */ | |
1330 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
1331 | if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) | |
1332 | if (qla4xxx_add_sess(ddb_entry)) | |
1333 | goto remove_host; | |
1334 | } | |
1335 | ||
1336 | printk(KERN_INFO | |
1337 | " QLogic iSCSI HBA Driver version: %s\n" | |
1338 | " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", | |
1339 | qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), | |
1340 | ha->host_no, ha->firmware_version[0], ha->firmware_version[1], | |
1341 | ha->patch_number, ha->build_number); | |
1342 | ||
1343 | return 0; | |
1344 | ||
1345 | remove_host: | |
1346 | qla4xxx_free_ddb_list(ha); | |
1347 | scsi_remove_host(host); | |
1348 | ||
1349 | probe_failed: | |
1350 | qla4xxx_free_adapter(ha); | |
1351 | scsi_host_put(ha->host); | |
1352 | ||
1353 | probe_disable_device: | |
1354 | pci_disable_device(pdev); | |
1355 | ||
1356 | return ret; | |
1357 | } | |
1358 | ||
1359 | /** | |
1360 | * qla4xxx_remove_adapter - calback function to remove adapter. | |
1361 | * @pci_dev: PCI device pointer | |
1362 | **/ | |
1363 | static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) | |
1364 | { | |
1365 | struct scsi_qla_host *ha; | |
1366 | ||
1367 | ha = pci_get_drvdata(pdev); | |
1368 | ||
bee4fe8e DS |
1369 | qla4xxx_disable_intrs(ha); |
1370 | ||
1371 | while (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) | |
1372 | ssleep(1); | |
1373 | ||
afaf5a2d DS |
1374 | /* remove devs from iscsi_sessions to scsi_devices */ |
1375 | qla4xxx_free_ddb_list(ha); | |
1376 | ||
1377 | scsi_remove_host(ha->host); | |
1378 | ||
1379 | qla4xxx_free_adapter(ha); | |
1380 | ||
1381 | scsi_host_put(ha->host); | |
1382 | ||
1383 | pci_set_drvdata(pdev, NULL); | |
1384 | } | |
1385 | ||
1386 | /** | |
1387 | * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. | |
1388 | * @ha: HA context | |
1389 | * | |
1390 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1391 | * supported addressing method. | |
1392 | */ | |
47975477 | 1393 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) |
afaf5a2d DS |
1394 | { |
1395 | int retval; | |
1396 | ||
1397 | /* Update our PCI device dma_mask for full 64 bit mask */ | |
1398 | if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) { | |
1399 | if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) { | |
1400 | dev_dbg(&ha->pdev->dev, | |
1401 | "Failed to set 64 bit PCI consistent mask; " | |
1402 | "using 32 bit.\n"); | |
1403 | retval = pci_set_consistent_dma_mask(ha->pdev, | |
1404 | DMA_32BIT_MASK); | |
1405 | } | |
1406 | } else | |
1407 | retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK); | |
1408 | } | |
1409 | ||
1410 | static int qla4xxx_slave_alloc(struct scsi_device *sdev) | |
1411 | { | |
1412 | struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); | |
1413 | struct ddb_entry *ddb = sess->dd_data; | |
1414 | ||
1415 | sdev->hostdata = ddb; | |
1416 | sdev->tagged_supported = 1; | |
1417 | scsi_activate_tcq(sdev, sdev->host->can_queue); | |
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | static int qla4xxx_slave_configure(struct scsi_device *sdev) | |
1422 | { | |
1423 | sdev->tagged_supported = 1; | |
1424 | return 0; | |
1425 | } | |
1426 | ||
1427 | static void qla4xxx_slave_destroy(struct scsi_device *sdev) | |
1428 | { | |
1429 | scsi_deactivate_tcq(sdev, 1); | |
1430 | } | |
1431 | ||
1432 | /** | |
1433 | * qla4xxx_del_from_active_array - returns an active srb | |
1434 | * @ha: Pointer to host adapter structure. | |
1435 | * @index: index into to the active_array | |
1436 | * | |
1437 | * This routine removes and returns the srb at the specified index | |
1438 | **/ | |
1439 | struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index) | |
1440 | { | |
1441 | struct srb *srb = NULL; | |
1442 | struct scsi_cmnd *cmd; | |
1443 | ||
1444 | if (!(cmd = scsi_host_find_tag(ha->host, index))) | |
1445 | return srb; | |
1446 | ||
1447 | if (!(srb = (struct srb *)cmd->host_scribble)) | |
1448 | return srb; | |
1449 | ||
1450 | /* update counters */ | |
1451 | if (srb->flags & SRB_DMA_VALID) { | |
1452 | ha->req_q_count += srb->iocb_cnt; | |
1453 | ha->iocb_cnt -= srb->iocb_cnt; | |
1454 | if (srb->cmd) | |
1455 | srb->cmd->host_scribble = NULL; | |
1456 | } | |
1457 | return srb; | |
1458 | } | |
1459 | ||
afaf5a2d DS |
1460 | /** |
1461 | * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware | |
1462 | * @ha: actual ha whose done queue will contain the comd returned by firmware. | |
1463 | * @cmd: Scsi Command to wait on. | |
1464 | * | |
1465 | * This routine waits for the command to be returned by the Firmware | |
1466 | * for some max time. | |
1467 | **/ | |
1468 | static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, | |
1469 | struct scsi_cmnd *cmd) | |
1470 | { | |
1471 | int done = 0; | |
1472 | struct srb *rp; | |
1473 | uint32_t max_wait_time = EH_WAIT_CMD_TOV; | |
1474 | ||
1475 | do { | |
1476 | /* Checking to see if its returned to OS */ | |
1477 | rp = (struct srb *) cmd->SCp.ptr; | |
1478 | if (rp == NULL) { | |
1479 | done++; | |
1480 | break; | |
1481 | } | |
1482 | ||
1483 | msleep(2000); | |
1484 | } while (max_wait_time--); | |
1485 | ||
1486 | return done; | |
1487 | } | |
1488 | ||
1489 | /** | |
1490 | * qla4xxx_wait_for_hba_online - waits for HBA to come online | |
1491 | * @ha: Pointer to host adapter structure | |
1492 | **/ | |
1493 | static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) | |
1494 | { | |
1495 | unsigned long wait_online; | |
1496 | ||
1497 | wait_online = jiffies + (30 * HZ); | |
1498 | while (time_before(jiffies, wait_online)) { | |
1499 | ||
1500 | if (adapter_up(ha)) | |
1501 | return QLA_SUCCESS; | |
1502 | else if (ha->retry_reset_ha_cnt == 0) | |
1503 | return QLA_ERROR; | |
1504 | ||
1505 | msleep(2000); | |
1506 | } | |
1507 | ||
1508 | return QLA_ERROR; | |
1509 | } | |
1510 | ||
1511 | /** | |
1512 | * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish. | |
1513 | * @ha: pointer to to HBA | |
1514 | * @t: target id | |
1515 | * @l: lun id | |
1516 | * | |
1517 | * This function waits for all outstanding commands to a lun to complete. It | |
1518 | * returns 0 if all pending commands are returned and 1 otherwise. | |
1519 | **/ | |
1520 | static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha, | |
1521 | int t, int l) | |
1522 | { | |
1523 | int cnt; | |
1524 | int status = 0; | |
1525 | struct scsi_cmnd *cmd; | |
1526 | ||
1527 | /* | |
1528 | * Waiting for all commands for the designated target in the active | |
1529 | * array | |
1530 | */ | |
1531 | for (cnt = 0; cnt < ha->host->can_queue; cnt++) { | |
1532 | cmd = scsi_host_find_tag(ha->host, cnt); | |
1533 | if (cmd && cmd->device->id == t && cmd->device->lun == l) { | |
1534 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { | |
1535 | status++; | |
1536 | break; | |
1537 | } | |
1538 | } | |
1539 | } | |
1540 | return status; | |
1541 | } | |
1542 | ||
1543 | /** | |
1544 | * qla4xxx_eh_device_reset - callback for target reset. | |
1545 | * @cmd: Pointer to Linux's SCSI command structure | |
1546 | * | |
1547 | * This routine is called by the Linux OS to reset all luns on the | |
1548 | * specified target. | |
1549 | **/ | |
1550 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
1551 | { | |
1552 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
1553 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
1554 | struct srb *sp; | |
1555 | int ret = FAILED, stat; | |
1556 | ||
1557 | sp = (struct srb *) cmd->SCp.ptr; | |
1558 | if (!sp || !ddb_entry) | |
1559 | return ret; | |
1560 | ||
1561 | dev_info(&ha->pdev->dev, | |
1562 | "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, | |
1563 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1564 | ||
1565 | DEBUG2(printk(KERN_INFO | |
1566 | "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," | |
1567 | "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, | |
1568 | cmd, jiffies, cmd->timeout_per_command / HZ, | |
1569 | ha->dpc_flags, cmd->result, cmd->allowed)); | |
1570 | ||
1571 | /* FIXME: wait for hba to go online */ | |
1572 | stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); | |
1573 | if (stat != QLA_SUCCESS) { | |
1574 | dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat); | |
1575 | goto eh_dev_reset_done; | |
1576 | } | |
1577 | ||
1578 | /* Send marker. */ | |
1579 | ha->marker_needed = 1; | |
1580 | ||
1581 | /* | |
1582 | * If we are coming down the EH path, wait for all commands to complete | |
1583 | * for the device. | |
1584 | */ | |
1585 | if (cmd->device->host->shost_state == SHOST_RECOVERY) { | |
1586 | if (qla4xxx_eh_wait_for_active_target_commands(ha, | |
1587 | cmd->device->id, | |
1588 | cmd->device->lun)){ | |
1589 | dev_info(&ha->pdev->dev, | |
1590 | "DEVICE RESET FAILED - waiting for " | |
1591 | "commands.\n"); | |
1592 | goto eh_dev_reset_done; | |
1593 | } | |
1594 | } | |
1595 | ||
1596 | dev_info(&ha->pdev->dev, | |
1597 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", | |
1598 | ha->host_no, cmd->device->channel, cmd->device->id, | |
1599 | cmd->device->lun); | |
1600 | ||
1601 | ret = SUCCESS; | |
1602 | ||
1603 | eh_dev_reset_done: | |
1604 | ||
1605 | return ret; | |
1606 | } | |
1607 | ||
1608 | /** | |
1609 | * qla4xxx_eh_host_reset - kernel callback | |
1610 | * @cmd: Pointer to Linux's SCSI command structure | |
1611 | * | |
1612 | * This routine is invoked by the Linux kernel to perform fatal error | |
1613 | * recovery on the specified adapter. | |
1614 | **/ | |
1615 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
1616 | { | |
1617 | int return_status = FAILED; | |
1618 | struct scsi_qla_host *ha; | |
1619 | ||
1620 | ha = (struct scsi_qla_host *) cmd->device->host->hostdata; | |
1621 | ||
1622 | dev_info(&ha->pdev->dev, | |
1623 | "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, | |
1624 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
1625 | ||
1626 | if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
1627 | DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " | |
1628 | "DEAD.\n", ha->host_no, cmd->device->channel, | |
1629 | __func__)); | |
1630 | ||
1631 | return FAILED; | |
1632 | } | |
1633 | ||
1634 | if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) { | |
1635 | return_status = SUCCESS; | |
1636 | } | |
1637 | ||
1638 | dev_info(&ha->pdev->dev, "HOST RESET %s.\n", | |
1639 | return_status == FAILED ? "FAILED" : "SUCCEDED"); | |
1640 | ||
1641 | return return_status; | |
1642 | } | |
1643 | ||
1644 | ||
1645 | static struct pci_device_id qla4xxx_pci_tbl[] = { | |
1646 | { | |
1647 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1648 | .device = PCI_DEVICE_ID_QLOGIC_ISP4010, | |
1649 | .subvendor = PCI_ANY_ID, | |
1650 | .subdevice = PCI_ANY_ID, | |
1651 | }, | |
1652 | { | |
1653 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1654 | .device = PCI_DEVICE_ID_QLOGIC_ISP4022, | |
1655 | .subvendor = PCI_ANY_ID, | |
1656 | .subdevice = PCI_ANY_ID, | |
1657 | }, | |
d915058f DS |
1658 | { |
1659 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
1660 | .device = PCI_DEVICE_ID_QLOGIC_ISP4032, | |
1661 | .subvendor = PCI_ANY_ID, | |
1662 | .subdevice = PCI_ANY_ID, | |
1663 | }, | |
afaf5a2d DS |
1664 | {0, 0}, |
1665 | }; | |
1666 | MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); | |
1667 | ||
47975477 | 1668 | static struct pci_driver qla4xxx_pci_driver = { |
afaf5a2d DS |
1669 | .name = DRIVER_NAME, |
1670 | .id_table = qla4xxx_pci_tbl, | |
1671 | .probe = qla4xxx_probe_adapter, | |
1672 | .remove = qla4xxx_remove_adapter, | |
1673 | }; | |
1674 | ||
1675 | static int __init qla4xxx_module_init(void) | |
1676 | { | |
1677 | int ret; | |
1678 | ||
1679 | /* Allocate cache for SRBs. */ | |
1680 | srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, | |
20c2df83 | 1681 | SLAB_HWCACHE_ALIGN, NULL); |
afaf5a2d DS |
1682 | if (srb_cachep == NULL) { |
1683 | printk(KERN_ERR | |
1684 | "%s: Unable to allocate SRB cache..." | |
1685 | "Failing load!\n", DRIVER_NAME); | |
1686 | ret = -ENOMEM; | |
1687 | goto no_srp_cache; | |
1688 | } | |
1689 | ||
1690 | /* Derive version string. */ | |
1691 | strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); | |
11010fec | 1692 | if (ql4xextended_error_logging) |
afaf5a2d DS |
1693 | strcat(qla4xxx_version_str, "-debug"); |
1694 | ||
1695 | qla4xxx_scsi_transport = | |
1696 | iscsi_register_transport(&qla4xxx_iscsi_transport); | |
1697 | if (!qla4xxx_scsi_transport){ | |
1698 | ret = -ENODEV; | |
1699 | goto release_srb_cache; | |
1700 | } | |
1701 | ||
afaf5a2d DS |
1702 | ret = pci_register_driver(&qla4xxx_pci_driver); |
1703 | if (ret) | |
1704 | goto unregister_transport; | |
1705 | ||
1706 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
1707 | return 0; | |
5ae16db3 | 1708 | |
afaf5a2d DS |
1709 | unregister_transport: |
1710 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1711 | release_srb_cache: | |
1712 | kmem_cache_destroy(srb_cachep); | |
1713 | no_srp_cache: | |
1714 | return ret; | |
1715 | } | |
1716 | ||
1717 | static void __exit qla4xxx_module_exit(void) | |
1718 | { | |
477ffb9d | 1719 | ql4_mod_unload = 1; |
afaf5a2d DS |
1720 | pci_unregister_driver(&qla4xxx_pci_driver); |
1721 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
1722 | kmem_cache_destroy(srb_cachep); | |
1723 | } | |
1724 | ||
1725 | module_init(qla4xxx_module_init); | |
1726 | module_exit(qla4xxx_module_exit); | |
1727 | ||
1728 | MODULE_AUTHOR("QLogic Corporation"); | |
1729 | MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); | |
1730 | MODULE_LICENSE("GPL"); | |
1731 | MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |