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Commit | Line | Data |
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afaf5a2d DS |
1 | /* |
2 | * QLogic iSCSI HBA Driver | |
7d01d069 | 3 | * Copyright (c) 2003-2010 QLogic Corporation |
afaf5a2d DS |
4 | * |
5 | * See LICENSE.qla4xxx for copyright and licensing details. | |
6 | */ | |
7 | #include <linux/moduleparam.h> | |
5a0e3ad6 | 8 | #include <linux/slab.h> |
afaf5a2d DS |
9 | |
10 | #include <scsi/scsi_tcq.h> | |
11 | #include <scsi/scsicam.h> | |
12 | ||
13 | #include "ql4_def.h" | |
bee4fe8e DS |
14 | #include "ql4_version.h" |
15 | #include "ql4_glbl.h" | |
16 | #include "ql4_dbg.h" | |
17 | #include "ql4_inline.h" | |
afaf5a2d DS |
18 | |
19 | /* | |
20 | * Driver version | |
21 | */ | |
47975477 | 22 | static char qla4xxx_version_str[40]; |
afaf5a2d DS |
23 | |
24 | /* | |
25 | * SRB allocation cache | |
26 | */ | |
e18b890b | 27 | static struct kmem_cache *srb_cachep; |
afaf5a2d DS |
28 | |
29 | /* | |
30 | * Module parameter information and variables | |
31 | */ | |
afaf5a2d | 32 | int ql4xdontresethba = 0; |
f4f5df23 | 33 | module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); |
afaf5a2d | 34 | MODULE_PARM_DESC(ql4xdontresethba, |
f4f5df23 VC |
35 | "Don't reset the HBA for driver recovery \n" |
36 | " 0 - It will reset HBA (Default)\n" | |
37 | " 1 - It will NOT reset HBA"); | |
afaf5a2d | 38 | |
11010fec | 39 | int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ |
f4f5df23 | 40 | module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); |
11010fec | 41 | MODULE_PARM_DESC(ql4xextended_error_logging, |
afaf5a2d DS |
42 | "Option to enable extended error logging, " |
43 | "Default is 0 - no logging, 1 - debug logging"); | |
44 | ||
f4f5df23 VC |
45 | int ql4xenablemsix = 1; |
46 | module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); | |
47 | MODULE_PARM_DESC(ql4xenablemsix, | |
48 | "Set to enable MSI or MSI-X interrupt mechanism.\n" | |
49 | " 0 = enable INTx interrupt mechanism.\n" | |
50 | " 1 = enable MSI-X interrupt mechanism (Default).\n" | |
51 | " 2 = enable MSI interrupt mechanism."); | |
477ffb9d | 52 | |
d510d965 | 53 | #define QL4_DEF_QDEPTH 32 |
8bb4033d VC |
54 | static int ql4xmaxqdepth = QL4_DEF_QDEPTH; |
55 | module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR); | |
56 | MODULE_PARM_DESC(ql4xmaxqdepth, | |
57 | "Maximum queue depth to report for target devices.\n" | |
58 | " Default: 32."); | |
d510d965 | 59 | |
3038727c VC |
60 | static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO; |
61 | module_param(ql4xsess_recovery_tmo, int, S_IRUGO); | |
62 | MODULE_PARM_DESC(ql4xsess_recovery_tmo, | |
63 | "Target Session Recovery Timeout.\n" | |
64 | " Default: 30 sec."); | |
65 | ||
afaf5a2d DS |
66 | /* |
67 | * SCSI host template entry points | |
68 | */ | |
47975477 | 69 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); |
afaf5a2d DS |
70 | |
71 | /* | |
72 | * iSCSI template entry points | |
73 | */ | |
2174a04e MC |
74 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
75 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
76 | struct sockaddr *dst_addr); | |
afaf5a2d DS |
77 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, |
78 | enum iscsi_param param, char *buf); | |
79 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, | |
80 | enum iscsi_param param, char *buf); | |
aa1e93a2 MC |
81 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
82 | enum iscsi_host_param param, char *buf); | |
afaf5a2d | 83 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); |
5c656af7 | 84 | static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); |
afaf5a2d DS |
85 | |
86 | /* | |
87 | * SCSI host template entry points | |
88 | */ | |
f281233d | 89 | static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
09a0f719 | 90 | static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); |
afaf5a2d | 91 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); |
ce545039 | 92 | static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); |
afaf5a2d DS |
93 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); |
94 | static int qla4xxx_slave_alloc(struct scsi_device *device); | |
95 | static int qla4xxx_slave_configure(struct scsi_device *device); | |
96 | static void qla4xxx_slave_destroy(struct scsi_device *sdev); | |
024f801f | 97 | static void qla4xxx_scan_start(struct Scsi_Host *shost); |
afaf5a2d | 98 | |
f4f5df23 VC |
99 | static struct qla4_8xxx_legacy_intr_set legacy_intr[] = |
100 | QLA82XX_LEGACY_INTR_CONFIG; | |
101 | ||
afaf5a2d DS |
102 | static struct scsi_host_template qla4xxx_driver_template = { |
103 | .module = THIS_MODULE, | |
104 | .name = DRIVER_NAME, | |
105 | .proc_name = DRIVER_NAME, | |
106 | .queuecommand = qla4xxx_queuecommand, | |
107 | ||
09a0f719 | 108 | .eh_abort_handler = qla4xxx_eh_abort, |
afaf5a2d | 109 | .eh_device_reset_handler = qla4xxx_eh_device_reset, |
ce545039 | 110 | .eh_target_reset_handler = qla4xxx_eh_target_reset, |
afaf5a2d | 111 | .eh_host_reset_handler = qla4xxx_eh_host_reset, |
5c656af7 | 112 | .eh_timed_out = qla4xxx_eh_cmd_timed_out, |
afaf5a2d DS |
113 | |
114 | .slave_configure = qla4xxx_slave_configure, | |
115 | .slave_alloc = qla4xxx_slave_alloc, | |
116 | .slave_destroy = qla4xxx_slave_destroy, | |
117 | ||
921601b7 | 118 | .scan_finished = iscsi_scan_finished, |
024f801f | 119 | .scan_start = qla4xxx_scan_start, |
921601b7 | 120 | |
afaf5a2d DS |
121 | .this_id = -1, |
122 | .cmd_per_lun = 3, | |
123 | .use_clustering = ENABLE_CLUSTERING, | |
124 | .sg_tablesize = SG_ALL, | |
125 | ||
126 | .max_sectors = 0xFFFF, | |
127 | }; | |
128 | ||
129 | static struct iscsi_transport qla4xxx_iscsi_transport = { | |
130 | .owner = THIS_MODULE, | |
131 | .name = DRIVER_NAME, | |
d8196ed2 MC |
132 | .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | |
133 | CAP_DATA_PATH_OFFLOAD, | |
aa1e93a2 | 134 | .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
3b2bef1f VC |
135 | ISCSI_TARGET_NAME | ISCSI_TPGT | |
136 | ISCSI_TARGET_ALIAS, | |
8ad5781a | 137 | .host_param_mask = ISCSI_HOST_HWADDRESS | |
22236961 | 138 | ISCSI_HOST_IPADDRESS | |
8ad5781a | 139 | ISCSI_HOST_INITIATOR_NAME, |
afaf5a2d DS |
140 | .tgt_dscvr = qla4xxx_tgt_dscvr, |
141 | .get_conn_param = qla4xxx_conn_get_param, | |
142 | .get_session_param = qla4xxx_sess_get_param, | |
aa1e93a2 | 143 | .get_host_param = qla4xxx_host_get_param, |
afaf5a2d DS |
144 | .session_recovery_timedout = qla4xxx_recovery_timedout, |
145 | }; | |
146 | ||
147 | static struct scsi_transport_template *qla4xxx_scsi_transport; | |
148 | ||
5c656af7 MC |
149 | static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) |
150 | { | |
151 | struct iscsi_cls_session *session; | |
152 | struct ddb_entry *ddb_entry; | |
153 | ||
154 | session = starget_to_session(scsi_target(sc->device)); | |
155 | ddb_entry = session->dd_data; | |
156 | ||
157 | /* if we are not logged in then the LLD is going to clean up the cmd */ | |
158 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
159 | return BLK_EH_RESET_TIMER; | |
160 | else | |
161 | return BLK_EH_NOT_HANDLED; | |
162 | } | |
163 | ||
afaf5a2d DS |
164 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) |
165 | { | |
166 | struct ddb_entry *ddb_entry = session->dd_data; | |
167 | struct scsi_qla_host *ha = ddb_entry->ha; | |
168 | ||
568d303b MC |
169 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
170 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); | |
171 | ||
3013cea8 | 172 | DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " |
568d303b MC |
173 | "of (%d) secs exhausted, marking device DEAD.\n", |
174 | ha->host_no, __func__, ddb_entry->fw_ddb_index, | |
3038727c | 175 | ddb_entry->sess->recovery_tmo)); |
568d303b | 176 | } |
afaf5a2d DS |
177 | } |
178 | ||
aa1e93a2 MC |
179 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
180 | enum iscsi_host_param param, char *buf) | |
181 | { | |
182 | struct scsi_qla_host *ha = to_qla_host(shost); | |
183 | int len; | |
184 | ||
185 | switch (param) { | |
186 | case ISCSI_HOST_PARAM_HWADDRESS: | |
7ffc49a6 | 187 | len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); |
8ad5781a | 188 | break; |
22236961 MC |
189 | case ISCSI_HOST_PARAM_IPADDRESS: |
190 | len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], | |
191 | ha->ip_address[1], ha->ip_address[2], | |
192 | ha->ip_address[3]); | |
193 | break; | |
8ad5781a | 194 | case ISCSI_HOST_PARAM_INITIATOR_NAME: |
22236961 | 195 | len = sprintf(buf, "%s\n", ha->name_string); |
aa1e93a2 MC |
196 | break; |
197 | default: | |
198 | return -ENOSYS; | |
199 | } | |
200 | ||
201 | return len; | |
202 | } | |
203 | ||
afaf5a2d DS |
204 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
205 | enum iscsi_param param, char *buf) | |
206 | { | |
207 | struct ddb_entry *ddb_entry = sess->dd_data; | |
208 | int len; | |
209 | ||
210 | switch (param) { | |
211 | case ISCSI_PARAM_TARGET_NAME: | |
212 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
213 | ddb_entry->iscsi_name); | |
214 | break; | |
215 | case ISCSI_PARAM_TPGT: | |
216 | len = sprintf(buf, "%u\n", ddb_entry->tpgt); | |
217 | break; | |
3b2bef1f VC |
218 | case ISCSI_PARAM_TARGET_ALIAS: |
219 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
220 | ddb_entry->iscsi_alias); | |
221 | break; | |
afaf5a2d DS |
222 | default: |
223 | return -ENOSYS; | |
224 | } | |
225 | ||
226 | return len; | |
227 | } | |
228 | ||
229 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
230 | enum iscsi_param param, char *buf) | |
231 | { | |
232 | struct iscsi_cls_session *session; | |
233 | struct ddb_entry *ddb_entry; | |
234 | int len; | |
235 | ||
236 | session = iscsi_dev_to_session(conn->dev.parent); | |
237 | ddb_entry = session->dd_data; | |
238 | ||
239 | switch (param) { | |
240 | case ISCSI_PARAM_CONN_PORT: | |
241 | len = sprintf(buf, "%hu\n", ddb_entry->port); | |
242 | break; | |
243 | case ISCSI_PARAM_CONN_ADDRESS: | |
244 | /* TODO: what are the ipv6 bits */ | |
63779436 | 245 | len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); |
afaf5a2d DS |
246 | break; |
247 | default: | |
248 | return -ENOSYS; | |
249 | } | |
250 | ||
251 | return len; | |
252 | } | |
253 | ||
2174a04e MC |
254 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
255 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
256 | struct sockaddr *dst_addr) | |
afaf5a2d DS |
257 | { |
258 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
259 | struct sockaddr_in *addr; |
260 | struct sockaddr_in6 *addr6; | |
261 | int ret = 0; | |
262 | ||
afaf5a2d DS |
263 | ha = (struct scsi_qla_host *) shost->hostdata; |
264 | ||
265 | switch (type) { | |
266 | case ISCSI_TGT_DSCVR_SEND_TARGETS: | |
267 | if (dst_addr->sa_family == AF_INET) { | |
268 | addr = (struct sockaddr_in *)dst_addr; | |
269 | if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, | |
270 | addr->sin_port) != QLA_SUCCESS) | |
271 | ret = -EIO; | |
272 | } else if (dst_addr->sa_family == AF_INET6) { | |
273 | /* | |
274 | * TODO: fix qla4xxx_send_tgts | |
275 | */ | |
276 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
277 | if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, | |
278 | addr6->sin6_port) != QLA_SUCCESS) | |
279 | ret = -EIO; | |
280 | } else | |
281 | ret = -ENOSYS; | |
282 | break; | |
283 | default: | |
284 | ret = -ENOSYS; | |
285 | } | |
afaf5a2d DS |
286 | return ret; |
287 | } | |
288 | ||
289 | void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) | |
290 | { | |
291 | if (!ddb_entry->sess) | |
292 | return; | |
293 | ||
294 | if (ddb_entry->conn) { | |
26974789 | 295 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); |
afaf5a2d DS |
296 | iscsi_remove_session(ddb_entry->sess); |
297 | } | |
298 | iscsi_free_session(ddb_entry->sess); | |
299 | } | |
300 | ||
301 | int qla4xxx_add_sess(struct ddb_entry *ddb_entry) | |
302 | { | |
303 | int err; | |
304 | ||
3038727c | 305 | ddb_entry->sess->recovery_tmo = ql4xsess_recovery_tmo; |
3013cea8 | 306 | |
afaf5a2d DS |
307 | err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); |
308 | if (err) { | |
309 | DEBUG2(printk(KERN_ERR "Could not add session.\n")); | |
310 | return err; | |
311 | } | |
312 | ||
5d91e209 | 313 | ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); |
afaf5a2d DS |
314 | if (!ddb_entry->conn) { |
315 | iscsi_remove_session(ddb_entry->sess); | |
316 | DEBUG2(printk(KERN_ERR "Could not add connection.\n")); | |
317 | return -ENOMEM; | |
318 | } | |
b635930d MC |
319 | |
320 | /* finally ready to go */ | |
321 | iscsi_unblock_session(ddb_entry->sess); | |
afaf5a2d DS |
322 | return 0; |
323 | } | |
324 | ||
325 | struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) | |
326 | { | |
327 | struct ddb_entry *ddb_entry; | |
328 | struct iscsi_cls_session *sess; | |
329 | ||
5d91e209 MC |
330 | sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, |
331 | sizeof(struct ddb_entry)); | |
afaf5a2d DS |
332 | if (!sess) |
333 | return NULL; | |
334 | ||
335 | ddb_entry = sess->dd_data; | |
336 | memset(ddb_entry, 0, sizeof(*ddb_entry)); | |
337 | ddb_entry->ha = ha; | |
338 | ddb_entry->sess = sess; | |
339 | return ddb_entry; | |
340 | } | |
341 | ||
024f801f MC |
342 | static void qla4xxx_scan_start(struct Scsi_Host *shost) |
343 | { | |
344 | struct scsi_qla_host *ha = shost_priv(shost); | |
345 | struct ddb_entry *ddb_entry, *ddbtemp; | |
346 | ||
347 | /* finish setup of sessions that were already setup in firmware */ | |
348 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
349 | if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) | |
350 | qla4xxx_add_sess(ddb_entry); | |
351 | } | |
352 | } | |
353 | ||
afaf5a2d DS |
354 | /* |
355 | * Timer routines | |
356 | */ | |
357 | ||
358 | static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, | |
359 | unsigned long interval) | |
360 | { | |
361 | DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", | |
362 | __func__, ha->host->host_no)); | |
363 | init_timer(&ha->timer); | |
364 | ha->timer.expires = jiffies + interval * HZ; | |
365 | ha->timer.data = (unsigned long)ha; | |
366 | ha->timer.function = (void (*)(unsigned long))func; | |
367 | add_timer(&ha->timer); | |
368 | ha->timer_active = 1; | |
369 | } | |
370 | ||
371 | static void qla4xxx_stop_timer(struct scsi_qla_host *ha) | |
372 | { | |
373 | del_timer_sync(&ha->timer); | |
374 | ha->timer_active = 0; | |
375 | } | |
376 | ||
377 | /*** | |
378 | * qla4xxx_mark_device_missing - mark a device as missing. | |
379 | * @ha: Pointer to host adapter structure. | |
380 | * @ddb_entry: Pointer to device database entry | |
381 | * | |
f4f5df23 | 382 | * This routine marks a device missing and close connection. |
afaf5a2d DS |
383 | **/ |
384 | void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, | |
385 | struct ddb_entry *ddb_entry) | |
386 | { | |
f4f5df23 VC |
387 | if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { |
388 | atomic_set(&ddb_entry->state, DDB_STATE_MISSING); | |
389 | DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", | |
390 | ha->host_no, ddb_entry->fw_ddb_index)); | |
391 | } else | |
392 | DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, | |
393 | ddb_entry->fw_ddb_index)) | |
394 | ||
b635930d | 395 | iscsi_block_session(ddb_entry->sess); |
e5bd7b54 | 396 | iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); |
afaf5a2d DS |
397 | } |
398 | ||
f4f5df23 VC |
399 | /** |
400 | * qla4xxx_mark_all_devices_missing - mark all devices as missing. | |
401 | * @ha: Pointer to host adapter structure. | |
402 | * | |
403 | * This routine marks a device missing and resets the relogin retry count. | |
404 | **/ | |
405 | void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) | |
406 | { | |
407 | struct ddb_entry *ddb_entry, *ddbtemp; | |
408 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
409 | qla4xxx_mark_device_missing(ha, ddb_entry); | |
410 | } | |
411 | } | |
412 | ||
afaf5a2d DS |
413 | static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, |
414 | struct ddb_entry *ddb_entry, | |
415 | struct scsi_cmnd *cmd, | |
416 | void (*done)(struct scsi_cmnd *)) | |
417 | { | |
418 | struct srb *srb; | |
419 | ||
420 | srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
421 | if (!srb) | |
422 | return srb; | |
423 | ||
09a0f719 | 424 | kref_init(&srb->srb_ref); |
afaf5a2d DS |
425 | srb->ha = ha; |
426 | srb->ddb = ddb_entry; | |
427 | srb->cmd = cmd; | |
428 | srb->flags = 0; | |
5369887a | 429 | CMD_SP(cmd) = (void *)srb; |
afaf5a2d DS |
430 | cmd->scsi_done = done; |
431 | ||
432 | return srb; | |
433 | } | |
434 | ||
435 | static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) | |
436 | { | |
437 | struct scsi_cmnd *cmd = srb->cmd; | |
438 | ||
439 | if (srb->flags & SRB_DMA_VALID) { | |
5f7186c8 | 440 | scsi_dma_unmap(cmd); |
afaf5a2d DS |
441 | srb->flags &= ~SRB_DMA_VALID; |
442 | } | |
5369887a | 443 | CMD_SP(cmd) = NULL; |
afaf5a2d DS |
444 | } |
445 | ||
09a0f719 | 446 | void qla4xxx_srb_compl(struct kref *ref) |
afaf5a2d | 447 | { |
09a0f719 | 448 | struct srb *srb = container_of(ref, struct srb, srb_ref); |
afaf5a2d | 449 | struct scsi_cmnd *cmd = srb->cmd; |
09a0f719 | 450 | struct scsi_qla_host *ha = srb->ha; |
afaf5a2d DS |
451 | |
452 | qla4xxx_srb_free_dma(ha, srb); | |
453 | ||
454 | mempool_free(srb, ha->srb_mempool); | |
455 | ||
456 | cmd->scsi_done(cmd); | |
457 | } | |
458 | ||
459 | /** | |
460 | * qla4xxx_queuecommand - scsi layer issues scsi command to driver. | |
461 | * @cmd: Pointer to Linux's SCSI command structure | |
462 | * @done_fn: Function that the driver calls to notify the SCSI mid-layer | |
463 | * that the command has been processed. | |
464 | * | |
465 | * Remarks: | |
466 | * This routine is invoked by Linux to send a SCSI command to the driver. | |
467 | * The mid-level driver tries to ensure that queuecommand never gets | |
468 | * invoked concurrently with itself or the interrupt handler (although | |
469 | * the interrupt handler may call this routine as part of request- | |
470 | * completion handling). Unfortunely, it sometimes calls the scheduler | |
471 | * in interrupt context which is a big NO! NO!. | |
472 | **/ | |
f281233d | 473 | static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, |
afaf5a2d DS |
474 | void (*done)(struct scsi_cmnd *)) |
475 | { | |
476 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
477 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
7fb1921b | 478 | struct iscsi_cls_session *sess = ddb_entry->sess; |
afaf5a2d DS |
479 | struct srb *srb; |
480 | int rval; | |
481 | ||
2232be0d LC |
482 | if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
483 | if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) | |
484 | cmd->result = DID_NO_CONNECT << 16; | |
485 | else | |
486 | cmd->result = DID_REQUEUE << 16; | |
487 | goto qc_fail_command; | |
488 | } | |
489 | ||
7fb1921b MC |
490 | if (!sess) { |
491 | cmd->result = DID_IMM_RETRY << 16; | |
492 | goto qc_fail_command; | |
493 | } | |
494 | ||
495 | rval = iscsi_session_chkready(sess); | |
496 | if (rval) { | |
497 | cmd->result = rval; | |
498 | goto qc_fail_command; | |
499 | } | |
500 | ||
afaf5a2d DS |
501 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
502 | if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { | |
503 | cmd->result = DID_NO_CONNECT << 16; | |
504 | goto qc_fail_command; | |
505 | } | |
c5e98e91 | 506 | return SCSI_MLQUEUE_TARGET_BUSY; |
afaf5a2d DS |
507 | } |
508 | ||
f4f5df23 VC |
509 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
510 | test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || | |
511 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
512 | test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || | |
513 | test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || | |
514 | !test_bit(AF_ONLINE, &ha->flags) || | |
515 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) | |
477ffb9d DS |
516 | goto qc_host_busy; |
517 | ||
afaf5a2d DS |
518 | spin_unlock_irq(ha->host->host_lock); |
519 | ||
520 | srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); | |
521 | if (!srb) | |
522 | goto qc_host_busy_lock; | |
523 | ||
524 | rval = qla4xxx_send_command_to_isp(ha, srb); | |
525 | if (rval != QLA_SUCCESS) | |
526 | goto qc_host_busy_free_sp; | |
527 | ||
528 | spin_lock_irq(ha->host->host_lock); | |
529 | return 0; | |
530 | ||
531 | qc_host_busy_free_sp: | |
532 | qla4xxx_srb_free_dma(ha, srb); | |
533 | mempool_free(srb, ha->srb_mempool); | |
534 | ||
535 | qc_host_busy_lock: | |
536 | spin_lock_irq(ha->host->host_lock); | |
537 | ||
538 | qc_host_busy: | |
539 | return SCSI_MLQUEUE_HOST_BUSY; | |
540 | ||
541 | qc_fail_command: | |
542 | done(cmd); | |
543 | ||
544 | return 0; | |
545 | } | |
546 | ||
f281233d JG |
547 | static DEF_SCSI_QCMD(qla4xxx_queuecommand) |
548 | ||
afaf5a2d DS |
549 | /** |
550 | * qla4xxx_mem_free - frees memory allocated to adapter | |
551 | * @ha: Pointer to host adapter structure. | |
552 | * | |
553 | * Frees memory previously allocated by qla4xxx_mem_alloc | |
554 | **/ | |
555 | static void qla4xxx_mem_free(struct scsi_qla_host *ha) | |
556 | { | |
557 | if (ha->queues) | |
558 | dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, | |
559 | ha->queues_dma); | |
560 | ||
561 | ha->queues_len = 0; | |
562 | ha->queues = NULL; | |
563 | ha->queues_dma = 0; | |
564 | ha->request_ring = NULL; | |
565 | ha->request_dma = 0; | |
566 | ha->response_ring = NULL; | |
567 | ha->response_dma = 0; | |
568 | ha->shadow_regs = NULL; | |
569 | ha->shadow_regs_dma = 0; | |
570 | ||
571 | /* Free srb pool. */ | |
572 | if (ha->srb_mempool) | |
573 | mempool_destroy(ha->srb_mempool); | |
574 | ||
575 | ha->srb_mempool = NULL; | |
576 | ||
577 | /* release io space registers */ | |
f4f5df23 VC |
578 | if (is_qla8022(ha)) { |
579 | if (ha->nx_pcibase) | |
580 | iounmap( | |
581 | (struct device_reg_82xx __iomem *)ha->nx_pcibase); | |
f4f5df23 | 582 | } else if (ha->reg) |
afaf5a2d DS |
583 | iounmap(ha->reg); |
584 | pci_release_regions(ha->pdev); | |
585 | } | |
586 | ||
587 | /** | |
588 | * qla4xxx_mem_alloc - allocates memory for use by adapter. | |
589 | * @ha: Pointer to host adapter structure | |
590 | * | |
591 | * Allocates DMA memory for request and response queues. Also allocates memory | |
592 | * for srbs. | |
593 | **/ | |
594 | static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) | |
595 | { | |
596 | unsigned long align; | |
597 | ||
598 | /* Allocate contiguous block of DMA memory for queues. */ | |
599 | ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
600 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + | |
601 | sizeof(struct shadow_regs) + | |
602 | MEM_ALIGN_VALUE + | |
603 | (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); | |
604 | ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, | |
605 | &ha->queues_dma, GFP_KERNEL); | |
606 | if (ha->queues == NULL) { | |
c2660df3 VC |
607 | ql4_printk(KERN_WARNING, ha, |
608 | "Memory Allocation failed - queues.\n"); | |
afaf5a2d DS |
609 | |
610 | goto mem_alloc_error_exit; | |
611 | } | |
612 | memset(ha->queues, 0, ha->queues_len); | |
613 | ||
614 | /* | |
615 | * As per RISC alignment requirements -- the bus-address must be a | |
616 | * multiple of the request-ring size (in bytes). | |
617 | */ | |
618 | align = 0; | |
619 | if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) | |
620 | align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & | |
621 | (MEM_ALIGN_VALUE - 1)); | |
622 | ||
623 | /* Update request and response queue pointers. */ | |
624 | ha->request_dma = ha->queues_dma + align; | |
625 | ha->request_ring = (struct queue_entry *) (ha->queues + align); | |
626 | ha->response_dma = ha->queues_dma + align + | |
627 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); | |
628 | ha->response_ring = (struct queue_entry *) (ha->queues + align + | |
629 | (REQUEST_QUEUE_DEPTH * | |
630 | QUEUE_SIZE)); | |
631 | ha->shadow_regs_dma = ha->queues_dma + align + | |
632 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
633 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); | |
634 | ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + | |
635 | (REQUEST_QUEUE_DEPTH * | |
636 | QUEUE_SIZE) + | |
637 | (RESPONSE_QUEUE_DEPTH * | |
638 | QUEUE_SIZE)); | |
639 | ||
640 | /* Allocate memory for srb pool. */ | |
641 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
642 | mempool_free_slab, srb_cachep); | |
643 | if (ha->srb_mempool == NULL) { | |
c2660df3 VC |
644 | ql4_printk(KERN_WARNING, ha, |
645 | "Memory Allocation failed - SRB Pool.\n"); | |
afaf5a2d DS |
646 | |
647 | goto mem_alloc_error_exit; | |
648 | } | |
649 | ||
650 | return QLA_SUCCESS; | |
651 | ||
652 | mem_alloc_error_exit: | |
653 | qla4xxx_mem_free(ha); | |
654 | return QLA_ERROR; | |
655 | } | |
656 | ||
f4f5df23 VC |
657 | /** |
658 | * qla4_8xxx_check_fw_alive - Check firmware health | |
659 | * @ha: Pointer to host adapter structure. | |
660 | * | |
661 | * Context: Interrupt | |
662 | **/ | |
663 | static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) | |
664 | { | |
665 | uint32_t fw_heartbeat_counter, halt_status; | |
666 | ||
667 | fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); | |
2232be0d LC |
668 | /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ |
669 | if (fw_heartbeat_counter == 0xffffffff) { | |
670 | DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " | |
671 | "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", | |
672 | ha->host_no, __func__)); | |
673 | return; | |
674 | } | |
f4f5df23 VC |
675 | |
676 | if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { | |
677 | ha->seconds_since_last_heartbeat++; | |
678 | /* FW not alive after 2 seconds */ | |
679 | if (ha->seconds_since_last_heartbeat == 2) { | |
680 | ha->seconds_since_last_heartbeat = 0; | |
681 | halt_status = qla4_8xxx_rd_32(ha, | |
68d92ebf VC |
682 | QLA82XX_PEG_HALT_STATUS1); |
683 | ||
684 | ql4_printk(KERN_INFO, ha, | |
685 | "scsi(%ld): %s, Dumping hw/fw registers:\n " | |
686 | " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:" | |
687 | " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:" | |
688 | " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:" | |
689 | " 0x%x,\n PEG_NET_4_PC: 0x%x\n", | |
690 | ha->host_no, __func__, halt_status, | |
691 | qla4_8xxx_rd_32(ha, | |
692 | QLA82XX_PEG_HALT_STATUS2), | |
693 | qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 + | |
694 | 0x3c), | |
695 | qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 + | |
696 | 0x3c), | |
697 | qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 + | |
698 | 0x3c), | |
699 | qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 + | |
700 | 0x3c), | |
701 | qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 + | |
702 | 0x3c)); | |
21033639 | 703 | |
f4f5df23 VC |
704 | /* Since we cannot change dev_state in interrupt |
705 | * context, set appropriate DPC flag then wakeup | |
706 | * DPC */ | |
707 | if (halt_status & HALT_STATUS_UNRECOVERABLE) | |
708 | set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); | |
709 | else { | |
710 | printk("scsi%ld: %s: detect abort needed!\n", | |
711 | ha->host_no, __func__); | |
712 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
713 | } | |
714 | qla4xxx_wake_dpc(ha); | |
21033639 | 715 | qla4xxx_mailbox_premature_completion(ha); |
f4f5df23 | 716 | } |
99457d75 LC |
717 | } else |
718 | ha->seconds_since_last_heartbeat = 0; | |
719 | ||
f4f5df23 VC |
720 | ha->fw_heartbeat_counter = fw_heartbeat_counter; |
721 | } | |
722 | ||
723 | /** | |
724 | * qla4_8xxx_watchdog - Poll dev state | |
725 | * @ha: Pointer to host adapter structure. | |
726 | * | |
727 | * Context: Interrupt | |
728 | **/ | |
729 | void qla4_8xxx_watchdog(struct scsi_qla_host *ha) | |
730 | { | |
731 | uint32_t dev_state; | |
732 | ||
733 | dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); | |
734 | ||
735 | /* don't poll if reset is going on */ | |
d56a1f7b LC |
736 | if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || |
737 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
977f46a4 | 738 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) { |
f4f5df23 VC |
739 | if (dev_state == QLA82XX_DEV_NEED_RESET && |
740 | !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
3930b8c1 VC |
741 | if (!ql4xdontresethba) { |
742 | ql4_printk(KERN_INFO, ha, "%s: HW State: " | |
743 | "NEED RESET!\n", __func__); | |
744 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
745 | qla4xxx_wake_dpc(ha); | |
746 | qla4xxx_mailbox_premature_completion(ha); | |
747 | } | |
f4f5df23 VC |
748 | } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && |
749 | !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { | |
3930b8c1 VC |
750 | ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n", |
751 | __func__); | |
f4f5df23 VC |
752 | set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); |
753 | qla4xxx_wake_dpc(ha); | |
754 | } else { | |
755 | /* Check firmware health */ | |
756 | qla4_8xxx_check_fw_alive(ha); | |
757 | } | |
758 | } | |
759 | } | |
760 | ||
afaf5a2d DS |
761 | /** |
762 | * qla4xxx_timer - checks every second for work to do. | |
763 | * @ha: Pointer to host adapter structure. | |
764 | **/ | |
765 | static void qla4xxx_timer(struct scsi_qla_host *ha) | |
766 | { | |
767 | struct ddb_entry *ddb_entry, *dtemp; | |
768 | int start_dpc = 0; | |
2232be0d LC |
769 | uint16_t w; |
770 | ||
771 | /* If we are in the middle of AER/EEH processing | |
772 | * skip any processing and reschedule the timer | |
773 | */ | |
774 | if (test_bit(AF_EEH_BUSY, &ha->flags)) { | |
775 | mod_timer(&ha->timer, jiffies + HZ); | |
776 | return; | |
777 | } | |
778 | ||
779 | /* Hardware read to trigger an EEH error during mailbox waits. */ | |
780 | if (!pci_channel_offline(ha->pdev)) | |
781 | pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); | |
afaf5a2d | 782 | |
f4f5df23 VC |
783 | if (is_qla8022(ha)) { |
784 | qla4_8xxx_watchdog(ha); | |
785 | } | |
786 | ||
afaf5a2d DS |
787 | /* Search for relogin's to time-out and port down retry. */ |
788 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
789 | /* Count down time between sending relogins */ | |
790 | if (adapter_up(ha) && | |
791 | !test_bit(DF_RELOGIN, &ddb_entry->flags) && | |
792 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
793 | if (atomic_read(&ddb_entry->retry_relogin_timer) != | |
794 | INVALID_ENTRY) { | |
795 | if (atomic_read(&ddb_entry->retry_relogin_timer) | |
796 | == 0) { | |
797 | atomic_set(&ddb_entry-> | |
798 | retry_relogin_timer, | |
799 | INVALID_ENTRY); | |
800 | set_bit(DPC_RELOGIN_DEVICE, | |
801 | &ha->dpc_flags); | |
802 | set_bit(DF_RELOGIN, &ddb_entry->flags); | |
f4f5df23 | 803 | DEBUG2(printk("scsi%ld: %s: ddb [%d]" |
afaf5a2d DS |
804 | " login device\n", |
805 | ha->host_no, __func__, | |
806 | ddb_entry->fw_ddb_index)); | |
807 | } else | |
808 | atomic_dec(&ddb_entry-> | |
809 | retry_relogin_timer); | |
810 | } | |
811 | } | |
812 | ||
813 | /* Wait for relogin to timeout */ | |
814 | if (atomic_read(&ddb_entry->relogin_timer) && | |
815 | (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { | |
816 | /* | |
817 | * If the relogin times out and the device is | |
818 | * still NOT ONLINE then try and relogin again. | |
819 | */ | |
820 | if (atomic_read(&ddb_entry->state) != | |
821 | DDB_STATE_ONLINE && | |
822 | ddb_entry->fw_ddb_device_state == | |
823 | DDB_DS_SESSION_FAILED) { | |
824 | /* Reset retry relogin timer */ | |
825 | atomic_inc(&ddb_entry->relogin_retry_count); | |
f4f5df23 | 826 | DEBUG2(printk("scsi%ld: ddb [%d] relogin" |
afaf5a2d DS |
827 | " timed out-retrying" |
828 | " relogin (%d)\n", | |
829 | ha->host_no, | |
830 | ddb_entry->fw_ddb_index, | |
831 | atomic_read(&ddb_entry-> | |
832 | relogin_retry_count)) | |
833 | ); | |
834 | start_dpc++; | |
f4f5df23 | 835 | DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " |
cd09b2c3 | 836 | "initiate relogin after" |
afaf5a2d DS |
837 | " %d seconds\n", |
838 | ha->host_no, ddb_entry->bus, | |
839 | ddb_entry->target, | |
840 | ddb_entry->fw_ddb_index, | |
841 | ddb_entry->default_time2wait + 4) | |
842 | ); | |
843 | ||
844 | atomic_set(&ddb_entry->retry_relogin_timer, | |
845 | ddb_entry->default_time2wait + 4); | |
846 | } | |
847 | } | |
848 | } | |
849 | ||
f4f5df23 VC |
850 | if (!is_qla8022(ha)) { |
851 | /* Check for heartbeat interval. */ | |
852 | if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && | |
853 | ha->heartbeat_interval != 0) { | |
854 | ha->seconds_since_last_heartbeat++; | |
855 | if (ha->seconds_since_last_heartbeat > | |
856 | ha->heartbeat_interval + 2) | |
857 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
858 | } | |
afaf5a2d DS |
859 | } |
860 | ||
afaf5a2d DS |
861 | /* Wakeup the dpc routine for this adapter, if needed. */ |
862 | if ((start_dpc || | |
863 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
864 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || | |
865 | test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || | |
f4f5df23 | 866 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || |
afaf5a2d DS |
867 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
868 | test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || | |
065aa1b4 | 869 | test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || |
f4f5df23 VC |
870 | test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || |
871 | test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || | |
afaf5a2d | 872 | test_bit(DPC_AEN, &ha->dpc_flags)) && |
f4f5df23 | 873 | !test_bit(AF_DPC_SCHEDULED, &ha->flags) && |
afaf5a2d DS |
874 | ha->dpc_thread) { |
875 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" | |
876 | " - dpc flags = 0x%lx\n", | |
877 | ha->host_no, __func__, ha->dpc_flags)); | |
f4f5df23 | 878 | qla4xxx_wake_dpc(ha); |
afaf5a2d DS |
879 | } |
880 | ||
881 | /* Reschedule timer thread to call us back in one second */ | |
882 | mod_timer(&ha->timer, jiffies + HZ); | |
883 | ||
884 | DEBUG2(ha->seconds_since_last_intr++); | |
885 | } | |
886 | ||
887 | /** | |
888 | * qla4xxx_cmd_wait - waits for all outstanding commands to complete | |
889 | * @ha: Pointer to host adapter structure. | |
890 | * | |
891 | * This routine stalls the driver until all outstanding commands are returned. | |
892 | * Caller must release the Hardware Lock prior to calling this routine. | |
893 | **/ | |
894 | static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) | |
895 | { | |
896 | uint32_t index = 0; | |
afaf5a2d DS |
897 | unsigned long flags; |
898 | struct scsi_cmnd *cmd; | |
afaf5a2d | 899 | |
f4f5df23 VC |
900 | unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); |
901 | ||
902 | DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " | |
903 | "complete\n", WAIT_CMD_TOV)); | |
904 | ||
905 | while (!time_after_eq(jiffies, wtime)) { | |
afaf5a2d DS |
906 | spin_lock_irqsave(&ha->hardware_lock, flags); |
907 | /* Find a command that hasn't completed. */ | |
908 | for (index = 0; index < ha->host->can_queue; index++) { | |
909 | cmd = scsi_host_find_tag(ha->host, index); | |
a1e0063d MC |
910 | /* |
911 | * We cannot just check if the index is valid, | |
912 | * becase if we are run from the scsi eh, then | |
913 | * the scsi/block layer is going to prevent | |
914 | * the tag from being released. | |
915 | */ | |
916 | if (cmd != NULL && CMD_SP(cmd)) | |
afaf5a2d DS |
917 | break; |
918 | } | |
919 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
920 | ||
921 | /* If No Commands are pending, wait is complete */ | |
f4f5df23 VC |
922 | if (index == ha->host->can_queue) |
923 | return QLA_SUCCESS; | |
afaf5a2d | 924 | |
f4f5df23 VC |
925 | msleep(1000); |
926 | } | |
927 | /* If we timed out on waiting for commands to come back | |
928 | * return ERROR. */ | |
929 | return QLA_ERROR; | |
afaf5a2d DS |
930 | } |
931 | ||
f4f5df23 | 932 | int qla4xxx_hw_reset(struct scsi_qla_host *ha) |
afaf5a2d | 933 | { |
afaf5a2d | 934 | uint32_t ctrl_status; |
477ffb9d DS |
935 | unsigned long flags = 0; |
936 | ||
937 | DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); | |
afaf5a2d | 938 | |
f4f5df23 VC |
939 | if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) |
940 | return QLA_ERROR; | |
941 | ||
afaf5a2d DS |
942 | spin_lock_irqsave(&ha->hardware_lock, flags); |
943 | ||
944 | /* | |
945 | * If the SCSI Reset Interrupt bit is set, clear it. | |
946 | * Otherwise, the Soft Reset won't work. | |
947 | */ | |
948 | ctrl_status = readw(&ha->reg->ctrl_status); | |
949 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) | |
950 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
951 | ||
952 | /* Issue Soft Reset */ | |
953 | writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); | |
954 | readl(&ha->reg->ctrl_status); | |
955 | ||
956 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
f4f5df23 | 957 | return QLA_SUCCESS; |
477ffb9d DS |
958 | } |
959 | ||
960 | /** | |
961 | * qla4xxx_soft_reset - performs soft reset. | |
962 | * @ha: Pointer to host adapter structure. | |
963 | **/ | |
964 | int qla4xxx_soft_reset(struct scsi_qla_host *ha) | |
965 | { | |
966 | uint32_t max_wait_time; | |
967 | unsigned long flags = 0; | |
f931c534 | 968 | int status; |
477ffb9d DS |
969 | uint32_t ctrl_status; |
970 | ||
f931c534 VC |
971 | status = qla4xxx_hw_reset(ha); |
972 | if (status != QLA_SUCCESS) | |
973 | return status; | |
afaf5a2d | 974 | |
f931c534 | 975 | status = QLA_ERROR; |
afaf5a2d DS |
976 | /* Wait until the Network Reset Intr bit is cleared */ |
977 | max_wait_time = RESET_INTR_TOV; | |
978 | do { | |
979 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
980 | ctrl_status = readw(&ha->reg->ctrl_status); | |
981 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
982 | ||
983 | if ((ctrl_status & CSR_NET_RESET_INTR) == 0) | |
984 | break; | |
985 | ||
986 | msleep(1000); | |
987 | } while ((--max_wait_time)); | |
988 | ||
989 | if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { | |
990 | DEBUG2(printk(KERN_WARNING | |
991 | "scsi%ld: Network Reset Intr not cleared by " | |
992 | "Network function, clearing it now!\n", | |
993 | ha->host_no)); | |
994 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
995 | writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); | |
996 | readl(&ha->reg->ctrl_status); | |
997 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
998 | } | |
999 | ||
1000 | /* Wait until the firmware tells us the Soft Reset is done */ | |
1001 | max_wait_time = SOFT_RESET_TOV; | |
1002 | do { | |
1003 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1004 | ctrl_status = readw(&ha->reg->ctrl_status); | |
1005 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1006 | ||
1007 | if ((ctrl_status & CSR_SOFT_RESET) == 0) { | |
1008 | status = QLA_SUCCESS; | |
1009 | break; | |
1010 | } | |
1011 | ||
1012 | msleep(1000); | |
1013 | } while ((--max_wait_time)); | |
1014 | ||
1015 | /* | |
1016 | * Also, make sure that the SCSI Reset Interrupt bit has been cleared | |
1017 | * after the soft reset has taken place. | |
1018 | */ | |
1019 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1020 | ctrl_status = readw(&ha->reg->ctrl_status); | |
1021 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { | |
1022 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
1023 | readl(&ha->reg->ctrl_status); | |
1024 | } | |
1025 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1026 | ||
1027 | /* If soft reset fails then most probably the bios on other | |
1028 | * function is also enabled. | |
1029 | * Since the initialization is sequential the other fn | |
1030 | * wont be able to acknowledge the soft reset. | |
1031 | * Issue a force soft reset to workaround this scenario. | |
1032 | */ | |
1033 | if (max_wait_time == 0) { | |
1034 | /* Issue Force Soft Reset */ | |
1035 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1036 | writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); | |
1037 | readl(&ha->reg->ctrl_status); | |
1038 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1039 | /* Wait until the firmware tells us the Soft Reset is done */ | |
1040 | max_wait_time = SOFT_RESET_TOV; | |
1041 | do { | |
1042 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1043 | ctrl_status = readw(&ha->reg->ctrl_status); | |
1044 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1045 | ||
1046 | if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { | |
1047 | status = QLA_SUCCESS; | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | msleep(1000); | |
1052 | } while ((--max_wait_time)); | |
1053 | } | |
1054 | ||
1055 | return status; | |
1056 | } | |
1057 | ||
afaf5a2d | 1058 | /** |
f4f5df23 | 1059 | * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. |
afaf5a2d | 1060 | * @ha: Pointer to host adapter structure. |
f4f5df23 | 1061 | * @res: returned scsi status |
afaf5a2d DS |
1062 | * |
1063 | * This routine is called just prior to a HARD RESET to return all | |
1064 | * outstanding commands back to the Operating System. | |
1065 | * Caller should make sure that the following locks are released | |
1066 | * before this calling routine: Hardware lock, and io_request_lock. | |
1067 | **/ | |
f4f5df23 | 1068 | static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) |
afaf5a2d DS |
1069 | { |
1070 | struct srb *srb; | |
1071 | int i; | |
1072 | unsigned long flags; | |
1073 | ||
1074 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1075 | for (i = 0; i < ha->host->can_queue; i++) { | |
1076 | srb = qla4xxx_del_from_active_array(ha, i); | |
1077 | if (srb != NULL) { | |
f4f5df23 | 1078 | srb->cmd->result = res; |
09a0f719 | 1079 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
afaf5a2d DS |
1080 | } |
1081 | } | |
1082 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
afaf5a2d DS |
1083 | } |
1084 | ||
f4f5df23 VC |
1085 | void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) |
1086 | { | |
1087 | clear_bit(AF_ONLINE, &ha->flags); | |
1088 | ||
1089 | /* Disable the board */ | |
1090 | ql4_printk(KERN_INFO, ha, "Disabling the board\n"); | |
f4f5df23 VC |
1091 | |
1092 | qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); | |
1093 | qla4xxx_mark_all_devices_missing(ha); | |
1094 | clear_bit(AF_INIT_DONE, &ha->flags); | |
1095 | } | |
1096 | ||
afaf5a2d DS |
1097 | /** |
1098 | * qla4xxx_recover_adapter - recovers adapter after a fatal error | |
1099 | * @ha: Pointer to host adapter structure. | |
afaf5a2d | 1100 | **/ |
f4f5df23 | 1101 | static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) |
afaf5a2d | 1102 | { |
f4f5df23 VC |
1103 | int status = QLA_ERROR; |
1104 | uint8_t reset_chip = 0; | |
afaf5a2d DS |
1105 | |
1106 | /* Stall incoming I/O until we are done */ | |
f4f5df23 | 1107 | scsi_block_requests(ha->host); |
afaf5a2d | 1108 | clear_bit(AF_ONLINE, &ha->flags); |
50a29aec | 1109 | |
f4f5df23 | 1110 | DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); |
afaf5a2d | 1111 | |
f4f5df23 | 1112 | set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); |
afaf5a2d | 1113 | |
f4f5df23 VC |
1114 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) |
1115 | reset_chip = 1; | |
afaf5a2d | 1116 | |
f4f5df23 VC |
1117 | /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) |
1118 | * do not reset adapter, jump to initialize_adapter */ | |
1119 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { | |
1120 | status = QLA_SUCCESS; | |
1121 | goto recover_ha_init_adapter; | |
1122 | } | |
afaf5a2d | 1123 | |
f4f5df23 VC |
1124 | /* For the ISP-82xx adapter, issue a stop_firmware if invoked |
1125 | * from eh_host_reset or ioctl module */ | |
1126 | if (is_qla8022(ha) && !reset_chip && | |
1127 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { | |
1128 | ||
1129 | DEBUG2(ql4_printk(KERN_INFO, ha, | |
1130 | "scsi%ld: %s - Performing stop_firmware...\n", | |
1131 | ha->host_no, __func__)); | |
1132 | status = ha->isp_ops->reset_firmware(ha); | |
1133 | if (status == QLA_SUCCESS) { | |
2bd1e2be NJ |
1134 | if (!test_bit(AF_FW_RECOVERY, &ha->flags)) |
1135 | qla4xxx_cmd_wait(ha); | |
f4f5df23 VC |
1136 | ha->isp_ops->disable_intrs(ha); |
1137 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1138 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); | |
1139 | } else { | |
1140 | /* If the stop_firmware fails then | |
1141 | * reset the entire chip */ | |
1142 | reset_chip = 1; | |
1143 | clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); | |
1144 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
1145 | } | |
1146 | } | |
dca05c4c | 1147 | |
f4f5df23 VC |
1148 | /* Issue full chip reset if recovering from a catastrophic error, |
1149 | * or if stop_firmware fails for ISP-82xx. | |
1150 | * This is the default case for ISP-4xxx */ | |
1151 | if (!is_qla8022(ha) || reset_chip) { | |
2bd1e2be NJ |
1152 | if (!test_bit(AF_FW_RECOVERY, &ha->flags)) |
1153 | qla4xxx_cmd_wait(ha); | |
f4f5df23 VC |
1154 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
1155 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); | |
1156 | DEBUG2(ql4_printk(KERN_INFO, ha, | |
1157 | "scsi%ld: %s - Performing chip reset..\n", | |
1158 | ha->host_no, __func__)); | |
1159 | status = ha->isp_ops->reset_chip(ha); | |
1160 | } | |
afaf5a2d DS |
1161 | |
1162 | /* Flush any pending ddb changed AENs */ | |
1163 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1164 | ||
f4f5df23 VC |
1165 | recover_ha_init_adapter: |
1166 | /* Upon successful firmware/chip reset, re-initialize the adapter */ | |
afaf5a2d | 1167 | if (status == QLA_SUCCESS) { |
f4f5df23 VC |
1168 | /* For ISP-4xxx, force function 1 to always initialize |
1169 | * before function 3 to prevent both funcions from | |
1170 | * stepping on top of the other */ | |
1171 | if (!is_qla8022(ha) && (ha->mac_index == 3)) | |
1172 | ssleep(6); | |
1173 | ||
1174 | /* NOTE: AF_ONLINE flag set upon successful completion of | |
1175 | * qla4xxx_initialize_adapter */ | |
1176 | status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); | |
afaf5a2d DS |
1177 | } |
1178 | ||
f4f5df23 VC |
1179 | /* Retry failed adapter initialization, if necessary |
1180 | * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) | |
1181 | * case to prevent ping-pong resets between functions */ | |
1182 | if (!test_bit(AF_ONLINE, &ha->flags) && | |
1183 | !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { | |
afaf5a2d | 1184 | /* Adapter initialization failed, see if we can retry |
f4f5df23 VC |
1185 | * resetting the ha. |
1186 | * Since we don't want to block the DPC for too long | |
1187 | * with multiple resets in the same thread, | |
1188 | * utilize DPC to retry */ | |
afaf5a2d DS |
1189 | if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { |
1190 | ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; | |
1191 | DEBUG2(printk("scsi%ld: recover adapter - retrying " | |
1192 | "(%d) more times\n", ha->host_no, | |
1193 | ha->retry_reset_ha_cnt)); | |
1194 | set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
1195 | status = QLA_ERROR; | |
1196 | } else { | |
1197 | if (ha->retry_reset_ha_cnt > 0) { | |
1198 | /* Schedule another Reset HA--DPC will retry */ | |
1199 | ha->retry_reset_ha_cnt--; | |
1200 | DEBUG2(printk("scsi%ld: recover adapter - " | |
1201 | "retry remaining %d\n", | |
1202 | ha->host_no, | |
1203 | ha->retry_reset_ha_cnt)); | |
1204 | status = QLA_ERROR; | |
1205 | } | |
1206 | ||
1207 | if (ha->retry_reset_ha_cnt == 0) { | |
1208 | /* Recover adapter retries have been exhausted. | |
1209 | * Adapter DEAD */ | |
1210 | DEBUG2(printk("scsi%ld: recover adapter " | |
1211 | "failed - board disabled\n", | |
1212 | ha->host_no)); | |
f4f5df23 | 1213 | qla4xxx_dead_adapter_cleanup(ha); |
afaf5a2d DS |
1214 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
1215 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
f4f5df23 | 1216 | clear_bit(DPC_RESET_HA_FW_CONTEXT, |
afaf5a2d DS |
1217 | &ha->dpc_flags); |
1218 | status = QLA_ERROR; | |
1219 | } | |
1220 | } | |
1221 | } else { | |
1222 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
f4f5df23 | 1223 | clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); |
afaf5a2d DS |
1224 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
1225 | } | |
1226 | ||
1227 | ha->adapter_error_count++; | |
1228 | ||
f4f5df23 VC |
1229 | if (test_bit(AF_ONLINE, &ha->flags)) |
1230 | ha->isp_ops->enable_intrs(ha); | |
1231 | ||
1232 | scsi_unblock_requests(ha->host); | |
1233 | ||
1234 | clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); | |
1235 | DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, | |
25985edc | 1236 | status == QLA_ERROR ? "FAILED" : "SUCCEEDED")); |
afaf5a2d | 1237 | |
afaf5a2d DS |
1238 | return status; |
1239 | } | |
1240 | ||
2d7924e6 VC |
1241 | static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha) |
1242 | { | |
1243 | struct ddb_entry *ddb_entry, *dtemp; | |
1244 | ||
1245 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
1246 | if ((atomic_read(&ddb_entry->state) == DDB_STATE_MISSING) || | |
1247 | (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD)) { | |
1248 | if (ddb_entry->fw_ddb_device_state == | |
1249 | DDB_DS_SESSION_ACTIVE) { | |
1250 | atomic_set(&ddb_entry->state, DDB_STATE_ONLINE); | |
1251 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]" | |
1252 | " marked ONLINE\n", ha->host_no, __func__, | |
1253 | ddb_entry->fw_ddb_index); | |
1254 | ||
1255 | iscsi_unblock_session(ddb_entry->sess); | |
1256 | } else | |
1257 | qla4xxx_relogin_device(ha, ddb_entry); | |
1258 | } | |
1259 | } | |
1260 | } | |
1261 | ||
f4f5df23 VC |
1262 | void qla4xxx_wake_dpc(struct scsi_qla_host *ha) |
1263 | { | |
1264 | if (ha->dpc_thread && | |
1265 | !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { | |
1266 | set_bit(AF_DPC_SCHEDULED, &ha->flags); | |
1267 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
1268 | } | |
1269 | } | |
1270 | ||
afaf5a2d DS |
1271 | /** |
1272 | * qla4xxx_do_dpc - dpc routine | |
1273 | * @data: in our case pointer to adapter structure | |
1274 | * | |
1275 | * This routine is a task that is schedule by the interrupt handler | |
1276 | * to perform the background processing for interrupts. We put it | |
1277 | * on a task queue that is consumed whenever the scheduler runs; that's | |
1278 | * so you can do anything (i.e. put the process to sleep etc). In fact, | |
1279 | * the mid-level tries to sleep when it reaches the driver threshold | |
1280 | * "host->can_queue". This can cause a panic if we were in our interrupt code. | |
1281 | **/ | |
c4028958 | 1282 | static void qla4xxx_do_dpc(struct work_struct *work) |
afaf5a2d | 1283 | { |
c4028958 DH |
1284 | struct scsi_qla_host *ha = |
1285 | container_of(work, struct scsi_qla_host, dpc_work); | |
afaf5a2d | 1286 | struct ddb_entry *ddb_entry, *dtemp; |
477ffb9d | 1287 | int status = QLA_ERROR; |
afaf5a2d | 1288 | |
f26b9044 | 1289 | DEBUG2(printk("scsi%ld: %s: DPC handler waking up." |
f4f5df23 VC |
1290 | "flags = 0x%08lx, dpc_flags = 0x%08lx\n", |
1291 | ha->host_no, __func__, ha->flags, ha->dpc_flags)) | |
afaf5a2d DS |
1292 | |
1293 | /* Initialization not yet finished. Don't do anything yet. */ | |
1294 | if (!test_bit(AF_INIT_DONE, &ha->flags)) | |
0753b487 | 1295 | goto do_dpc_exit; |
afaf5a2d | 1296 | |
2232be0d LC |
1297 | if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
1298 | DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", | |
1299 | ha->host_no, __func__, ha->flags)); | |
1300 | goto do_dpc_exit; | |
1301 | } | |
1302 | ||
f4f5df23 VC |
1303 | if (is_qla8022(ha)) { |
1304 | if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { | |
1305 | qla4_8xxx_idc_lock(ha); | |
1306 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
1307 | QLA82XX_DEV_FAILED); | |
1308 | qla4_8xxx_idc_unlock(ha); | |
1309 | ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); | |
1310 | qla4_8xxx_device_state_handler(ha); | |
1311 | } | |
1312 | if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { | |
1313 | qla4_8xxx_need_qsnt_handler(ha); | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && | |
1318 | (test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
afaf5a2d | 1319 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
f4f5df23 VC |
1320 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { |
1321 | if (ql4xdontresethba) { | |
1322 | DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", | |
1323 | ha->host_no, __func__)); | |
1324 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
1325 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1326 | clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); | |
1327 | goto dpc_post_reset_ha; | |
1328 | } | |
1329 | if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || | |
1330 | test_bit(DPC_RESET_HA, &ha->dpc_flags)) | |
1331 | qla4xxx_recover_adapter(ha); | |
afaf5a2d | 1332 | |
477ffb9d | 1333 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
afaf5a2d | 1334 | uint8_t wait_time = RESET_INTR_TOV; |
afaf5a2d | 1335 | |
afaf5a2d DS |
1336 | while ((readw(&ha->reg->ctrl_status) & |
1337 | (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { | |
1338 | if (--wait_time == 0) | |
1339 | break; | |
afaf5a2d | 1340 | msleep(1000); |
afaf5a2d | 1341 | } |
afaf5a2d DS |
1342 | if (wait_time == 0) |
1343 | DEBUG2(printk("scsi%ld: %s: SR|FSR " | |
1344 | "bit not cleared-- resetting\n", | |
1345 | ha->host_no, __func__)); | |
f4f5df23 | 1346 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); |
477ffb9d DS |
1347 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { |
1348 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
f4f5df23 | 1349 | status = qla4xxx_recover_adapter(ha); |
477ffb9d DS |
1350 | } |
1351 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1352 | if (status == QLA_SUCCESS) | |
f4f5df23 | 1353 | ha->isp_ops->enable_intrs(ha); |
afaf5a2d DS |
1354 | } |
1355 | } | |
1356 | ||
f4f5df23 | 1357 | dpc_post_reset_ha: |
afaf5a2d DS |
1358 | /* ---- process AEN? --- */ |
1359 | if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) | |
1360 | qla4xxx_process_aen(ha, PROCESS_ALL_AENS); | |
1361 | ||
1362 | /* ---- Get DHCP IP Address? --- */ | |
1363 | if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) | |
1364 | qla4xxx_get_dhcp_ip_address(ha); | |
1365 | ||
065aa1b4 VC |
1366 | /* ---- link change? --- */ |
1367 | if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { | |
1368 | if (!test_bit(AF_LINK_UP, &ha->flags)) { | |
1369 | /* ---- link down? --- */ | |
2d7924e6 | 1370 | qla4xxx_mark_all_devices_missing(ha); |
065aa1b4 VC |
1371 | } else { |
1372 | /* ---- link up? --- * | |
1373 | * F/W will auto login to all devices ONLY ONCE after | |
1374 | * link up during driver initialization and runtime | |
1375 | * fatal error recovery. Therefore, the driver must | |
1376 | * manually relogin to devices when recovering from | |
1377 | * connection failures, logouts, expired KATO, etc. */ | |
1378 | ||
2d7924e6 | 1379 | qla4xxx_relogin_all_devices(ha); |
065aa1b4 VC |
1380 | } |
1381 | } | |
1382 | ||
afaf5a2d DS |
1383 | /* ---- relogin device? --- */ |
1384 | if (adapter_up(ha) && | |
1385 | test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { | |
1386 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1387 | &ha->ddb_list, list) { | |
1388 | if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && | |
1389 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
1390 | qla4xxx_relogin_device(ha, ddb_entry); | |
1391 | ||
1392 | /* | |
1393 | * If mbx cmd times out there is no point | |
1394 | * in continuing further. | |
1395 | * With large no of targets this can hang | |
1396 | * the system. | |
1397 | */ | |
1398 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
1399 | printk(KERN_WARNING "scsi%ld: %s: " | |
1400 | "need to reset hba\n", | |
1401 | ha->host_no, __func__); | |
1402 | break; | |
1403 | } | |
1404 | } | |
1405 | } | |
0753b487 VC |
1406 | |
1407 | do_dpc_exit: | |
f4f5df23 | 1408 | clear_bit(AF_DPC_SCHEDULED, &ha->flags); |
afaf5a2d DS |
1409 | } |
1410 | ||
1411 | /** | |
1412 | * qla4xxx_free_adapter - release the adapter | |
1413 | * @ha: pointer to adapter structure | |
1414 | **/ | |
1415 | static void qla4xxx_free_adapter(struct scsi_qla_host *ha) | |
1416 | { | |
1417 | ||
1418 | if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { | |
1419 | /* Turn-off interrupts on the card. */ | |
f4f5df23 | 1420 | ha->isp_ops->disable_intrs(ha); |
afaf5a2d DS |
1421 | } |
1422 | ||
f4f5df23 VC |
1423 | /* Remove timer thread, if present */ |
1424 | if (ha->timer_active) | |
1425 | qla4xxx_stop_timer(ha); | |
1426 | ||
afaf5a2d DS |
1427 | /* Kill the kernel thread for this host */ |
1428 | if (ha->dpc_thread) | |
1429 | destroy_workqueue(ha->dpc_thread); | |
1430 | ||
f4f5df23 VC |
1431 | /* Put firmware in known state */ |
1432 | ha->isp_ops->reset_firmware(ha); | |
afaf5a2d | 1433 | |
f4f5df23 VC |
1434 | if (is_qla8022(ha)) { |
1435 | qla4_8xxx_idc_lock(ha); | |
1436 | qla4_8xxx_clear_drv_active(ha); | |
1437 | qla4_8xxx_idc_unlock(ha); | |
1438 | } | |
afaf5a2d | 1439 | |
afaf5a2d DS |
1440 | /* Detach interrupts */ |
1441 | if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) | |
f4f5df23 | 1442 | qla4xxx_free_irqs(ha); |
afaf5a2d | 1443 | |
bee4fe8e DS |
1444 | /* free extra memory */ |
1445 | qla4xxx_mem_free(ha); | |
f4f5df23 VC |
1446 | } |
1447 | ||
1448 | int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) | |
1449 | { | |
1450 | int status = 0; | |
1451 | uint8_t revision_id; | |
1452 | unsigned long mem_base, mem_len, db_base, db_len; | |
1453 | struct pci_dev *pdev = ha->pdev; | |
1454 | ||
1455 | status = pci_request_regions(pdev, DRIVER_NAME); | |
1456 | if (status) { | |
1457 | printk(KERN_WARNING | |
1458 | "scsi(%ld) Failed to reserve PIO regions (%s) " | |
1459 | "status=%d\n", ha->host_no, pci_name(pdev), status); | |
1460 | goto iospace_error_exit; | |
1461 | } | |
1462 | ||
1463 | pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); | |
1464 | DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", | |
1465 | __func__, revision_id)); | |
1466 | ha->revision_id = revision_id; | |
bee4fe8e | 1467 | |
f4f5df23 VC |
1468 | /* remap phys address */ |
1469 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
1470 | mem_len = pci_resource_len(pdev, 0); | |
1471 | DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", | |
1472 | __func__, mem_base, mem_len)); | |
afaf5a2d | 1473 | |
f4f5df23 VC |
1474 | /* mapping of pcibase pointer */ |
1475 | ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); | |
1476 | if (!ha->nx_pcibase) { | |
1477 | printk(KERN_ERR | |
1478 | "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); | |
1479 | pci_release_regions(ha->pdev); | |
1480 | goto iospace_error_exit; | |
1481 | } | |
1482 | ||
1483 | /* Mapping of IO base pointer, door bell read and write pointer */ | |
1484 | ||
1485 | /* mapping of IO base pointer */ | |
1486 | ha->qla4_8xxx_reg = | |
1487 | (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + | |
1488 | 0xbc000 + (ha->pdev->devfn << 11)); | |
1489 | ||
1490 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
1491 | db_len = pci_resource_len(pdev, 4); | |
1492 | ||
2657c800 SS |
1493 | ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : |
1494 | QLA82XX_CAM_RAM_DB2); | |
f4f5df23 | 1495 | |
2657c800 | 1496 | return 0; |
f4f5df23 VC |
1497 | iospace_error_exit: |
1498 | return -ENOMEM; | |
afaf5a2d DS |
1499 | } |
1500 | ||
1501 | /*** | |
1502 | * qla4xxx_iospace_config - maps registers | |
1503 | * @ha: pointer to adapter structure | |
1504 | * | |
1505 | * This routines maps HBA's registers from the pci address space | |
1506 | * into the kernel virtual address space for memory mapped i/o. | |
1507 | **/ | |
f4f5df23 | 1508 | int qla4xxx_iospace_config(struct scsi_qla_host *ha) |
afaf5a2d DS |
1509 | { |
1510 | unsigned long pio, pio_len, pio_flags; | |
1511 | unsigned long mmio, mmio_len, mmio_flags; | |
1512 | ||
1513 | pio = pci_resource_start(ha->pdev, 0); | |
1514 | pio_len = pci_resource_len(ha->pdev, 0); | |
1515 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1516 | if (pio_flags & IORESOURCE_IO) { | |
1517 | if (pio_len < MIN_IOBASE_LEN) { | |
c2660df3 | 1518 | ql4_printk(KERN_WARNING, ha, |
afaf5a2d DS |
1519 | "Invalid PCI I/O region size\n"); |
1520 | pio = 0; | |
1521 | } | |
1522 | } else { | |
c2660df3 | 1523 | ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); |
afaf5a2d DS |
1524 | pio = 0; |
1525 | } | |
1526 | ||
1527 | /* Use MMIO operations for all accesses. */ | |
1528 | mmio = pci_resource_start(ha->pdev, 1); | |
1529 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1530 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1531 | ||
1532 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
c2660df3 VC |
1533 | ql4_printk(KERN_ERR, ha, |
1534 | "region #0 not an MMIO resource, aborting\n"); | |
afaf5a2d DS |
1535 | |
1536 | goto iospace_error_exit; | |
1537 | } | |
c2660df3 | 1538 | |
afaf5a2d | 1539 | if (mmio_len < MIN_IOBASE_LEN) { |
c2660df3 VC |
1540 | ql4_printk(KERN_ERR, ha, |
1541 | "Invalid PCI mem region size, aborting\n"); | |
afaf5a2d DS |
1542 | goto iospace_error_exit; |
1543 | } | |
1544 | ||
1545 | if (pci_request_regions(ha->pdev, DRIVER_NAME)) { | |
c2660df3 VC |
1546 | ql4_printk(KERN_WARNING, ha, |
1547 | "Failed to reserve PIO/MMIO regions\n"); | |
afaf5a2d DS |
1548 | |
1549 | goto iospace_error_exit; | |
1550 | } | |
1551 | ||
1552 | ha->pio_address = pio; | |
1553 | ha->pio_length = pio_len; | |
1554 | ha->reg = ioremap(mmio, MIN_IOBASE_LEN); | |
1555 | if (!ha->reg) { | |
c2660df3 VC |
1556 | ql4_printk(KERN_ERR, ha, |
1557 | "cannot remap MMIO, aborting\n"); | |
afaf5a2d DS |
1558 | |
1559 | goto iospace_error_exit; | |
1560 | } | |
1561 | ||
1562 | return 0; | |
1563 | ||
1564 | iospace_error_exit: | |
1565 | return -ENOMEM; | |
1566 | } | |
1567 | ||
f4f5df23 VC |
1568 | static struct isp_operations qla4xxx_isp_ops = { |
1569 | .iospace_config = qla4xxx_iospace_config, | |
1570 | .pci_config = qla4xxx_pci_config, | |
1571 | .disable_intrs = qla4xxx_disable_intrs, | |
1572 | .enable_intrs = qla4xxx_enable_intrs, | |
1573 | .start_firmware = qla4xxx_start_firmware, | |
1574 | .intr_handler = qla4xxx_intr_handler, | |
1575 | .interrupt_service_routine = qla4xxx_interrupt_service_routine, | |
1576 | .reset_chip = qla4xxx_soft_reset, | |
1577 | .reset_firmware = qla4xxx_hw_reset, | |
1578 | .queue_iocb = qla4xxx_queue_iocb, | |
1579 | .complete_iocb = qla4xxx_complete_iocb, | |
1580 | .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, | |
1581 | .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, | |
1582 | .get_sys_info = qla4xxx_get_sys_info, | |
1583 | }; | |
1584 | ||
1585 | static struct isp_operations qla4_8xxx_isp_ops = { | |
1586 | .iospace_config = qla4_8xxx_iospace_config, | |
1587 | .pci_config = qla4_8xxx_pci_config, | |
1588 | .disable_intrs = qla4_8xxx_disable_intrs, | |
1589 | .enable_intrs = qla4_8xxx_enable_intrs, | |
1590 | .start_firmware = qla4_8xxx_load_risc, | |
1591 | .intr_handler = qla4_8xxx_intr_handler, | |
1592 | .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, | |
1593 | .reset_chip = qla4_8xxx_isp_reset, | |
1594 | .reset_firmware = qla4_8xxx_stop_firmware, | |
1595 | .queue_iocb = qla4_8xxx_queue_iocb, | |
1596 | .complete_iocb = qla4_8xxx_complete_iocb, | |
1597 | .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, | |
1598 | .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, | |
1599 | .get_sys_info = qla4_8xxx_get_sys_info, | |
1600 | }; | |
1601 | ||
1602 | uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) | |
1603 | { | |
1604 | return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); | |
1605 | } | |
1606 | ||
1607 | uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) | |
1608 | { | |
1609 | return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); | |
1610 | } | |
1611 | ||
1612 | uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) | |
1613 | { | |
1614 | return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); | |
1615 | } | |
1616 | ||
1617 | uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) | |
1618 | { | |
1619 | return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); | |
1620 | } | |
1621 | ||
afaf5a2d DS |
1622 | /** |
1623 | * qla4xxx_probe_adapter - callback function to probe HBA | |
1624 | * @pdev: pointer to pci_dev structure | |
1625 | * @pci_device_id: pointer to pci_device entry | |
1626 | * | |
1627 | * This routine will probe for Qlogic 4xxx iSCSI host adapters. | |
1628 | * It returns zero if successful. It also initializes all data necessary for | |
1629 | * the driver. | |
1630 | **/ | |
1631 | static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, | |
1632 | const struct pci_device_id *ent) | |
1633 | { | |
1634 | int ret = -ENODEV, status; | |
1635 | struct Scsi_Host *host; | |
1636 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
1637 | uint8_t init_retry_count = 0; |
1638 | char buf[34]; | |
f4f5df23 | 1639 | struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; |
f9880e76 | 1640 | uint32_t dev_state; |
afaf5a2d DS |
1641 | |
1642 | if (pci_enable_device(pdev)) | |
1643 | return -1; | |
1644 | ||
1645 | host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); | |
1646 | if (host == NULL) { | |
1647 | printk(KERN_WARNING | |
1648 | "qla4xxx: Couldn't allocate host from scsi layer!\n"); | |
1649 | goto probe_disable_device; | |
1650 | } | |
1651 | ||
1652 | /* Clear our data area */ | |
1653 | ha = (struct scsi_qla_host *) host->hostdata; | |
1654 | memset(ha, 0, sizeof(*ha)); | |
1655 | ||
1656 | /* Save the information from PCI BIOS. */ | |
1657 | ha->pdev = pdev; | |
1658 | ha->host = host; | |
1659 | ha->host_no = host->host_no; | |
1660 | ||
2232be0d LC |
1661 | pci_enable_pcie_error_reporting(pdev); |
1662 | ||
f4f5df23 VC |
1663 | /* Setup Runtime configurable options */ |
1664 | if (is_qla8022(ha)) { | |
1665 | ha->isp_ops = &qla4_8xxx_isp_ops; | |
1666 | rwlock_init(&ha->hw_lock); | |
1667 | ha->qdr_sn_window = -1; | |
1668 | ha->ddr_mn_window = -1; | |
1669 | ha->curr_window = 255; | |
1670 | ha->func_num = PCI_FUNC(ha->pdev->devfn); | |
1671 | nx_legacy_intr = &legacy_intr[ha->func_num]; | |
1672 | ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; | |
1673 | ha->nx_legacy_intr.tgt_status_reg = | |
1674 | nx_legacy_intr->tgt_status_reg; | |
1675 | ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; | |
1676 | ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; | |
1677 | } else { | |
1678 | ha->isp_ops = &qla4xxx_isp_ops; | |
1679 | } | |
1680 | ||
2232be0d LC |
1681 | /* Set EEH reset type to fundamental if required by hba */ |
1682 | if (is_qla8022(ha)) | |
1683 | pdev->needs_freset = 1; | |
1684 | ||
afaf5a2d | 1685 | /* Configure PCI I/O space. */ |
f4f5df23 | 1686 | ret = ha->isp_ops->iospace_config(ha); |
afaf5a2d | 1687 | if (ret) |
f4f5df23 | 1688 | goto probe_failed_ioconfig; |
afaf5a2d | 1689 | |
c2660df3 | 1690 | ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", |
afaf5a2d DS |
1691 | pdev->device, pdev->irq, ha->reg); |
1692 | ||
1693 | qla4xxx_config_dma_addressing(ha); | |
1694 | ||
1695 | /* Initialize lists and spinlocks. */ | |
1696 | INIT_LIST_HEAD(&ha->ddb_list); | |
1697 | INIT_LIST_HEAD(&ha->free_srb_q); | |
1698 | ||
1699 | mutex_init(&ha->mbox_sem); | |
f4f5df23 | 1700 | init_completion(&ha->mbx_intr_comp); |
afaf5a2d DS |
1701 | |
1702 | spin_lock_init(&ha->hardware_lock); | |
afaf5a2d DS |
1703 | |
1704 | /* Allocate dma buffers */ | |
1705 | if (qla4xxx_mem_alloc(ha)) { | |
c2660df3 VC |
1706 | ql4_printk(KERN_WARNING, ha, |
1707 | "[ERROR] Failed to allocate memory for adapter\n"); | |
afaf5a2d DS |
1708 | |
1709 | ret = -ENOMEM; | |
1710 | goto probe_failed; | |
1711 | } | |
1712 | ||
f4f5df23 VC |
1713 | if (is_qla8022(ha)) |
1714 | (void) qla4_8xxx_get_flash_info(ha); | |
1715 | ||
afaf5a2d DS |
1716 | /* |
1717 | * Initialize the Host adapter request/response queues and | |
1718 | * firmware | |
1719 | * NOTE: interrupts enabled upon successful completion | |
1720 | */ | |
1721 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
f4f5df23 VC |
1722 | while ((!test_bit(AF_ONLINE, &ha->flags)) && |
1723 | init_retry_count++ < MAX_INIT_RETRIES) { | |
f9880e76 PM |
1724 | |
1725 | if (is_qla8022(ha)) { | |
1726 | qla4_8xxx_idc_lock(ha); | |
1727 | dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); | |
1728 | qla4_8xxx_idc_unlock(ha); | |
1729 | if (dev_state == QLA82XX_DEV_FAILED) { | |
1730 | ql4_printk(KERN_WARNING, ha, "%s: don't retry " | |
1731 | "initialize adapter. H/W is in failed state\n", | |
1732 | __func__); | |
1733 | break; | |
1734 | } | |
1735 | } | |
afaf5a2d DS |
1736 | DEBUG2(printk("scsi: %s: retrying adapter initialization " |
1737 | "(%d)\n", __func__, init_retry_count)); | |
f4f5df23 VC |
1738 | |
1739 | if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) | |
1740 | continue; | |
1741 | ||
afaf5a2d DS |
1742 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); |
1743 | } | |
f4f5df23 VC |
1744 | |
1745 | if (!test_bit(AF_ONLINE, &ha->flags)) { | |
c2660df3 | 1746 | ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); |
afaf5a2d | 1747 | |
fe998527 LC |
1748 | if (is_qla8022(ha) && ql4xdontresethba) { |
1749 | /* Put the device in failed state. */ | |
1750 | DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n")); | |
1751 | qla4_8xxx_idc_lock(ha); | |
1752 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
1753 | QLA82XX_DEV_FAILED); | |
1754 | qla4_8xxx_idc_unlock(ha); | |
1755 | } | |
afaf5a2d DS |
1756 | ret = -ENODEV; |
1757 | goto probe_failed; | |
1758 | } | |
1759 | ||
1760 | host->cmd_per_lun = 3; | |
1761 | host->max_channel = 0; | |
1762 | host->max_lun = MAX_LUNS - 1; | |
1763 | host->max_id = MAX_TARGETS; | |
1764 | host->max_cmd_len = IOCB_MAX_CDB_LEN; | |
1765 | host->can_queue = MAX_SRBS ; | |
1766 | host->transportt = qla4xxx_scsi_transport; | |
1767 | ||
1768 | ret = scsi_init_shared_tag_map(host, MAX_SRBS); | |
1769 | if (ret) { | |
c2660df3 VC |
1770 | ql4_printk(KERN_WARNING, ha, |
1771 | "scsi_init_shared_tag_map failed\n"); | |
1772 | goto probe_failed; | |
afaf5a2d DS |
1773 | } |
1774 | ||
1775 | /* Startup the kernel thread for this host adapter. */ | |
1776 | DEBUG2(printk("scsi: %s: Starting kernel thread for " | |
1777 | "qla4xxx_dpc\n", __func__)); | |
1778 | sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); | |
1779 | ha->dpc_thread = create_singlethread_workqueue(buf); | |
1780 | if (!ha->dpc_thread) { | |
c2660df3 | 1781 | ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); |
afaf5a2d DS |
1782 | ret = -ENODEV; |
1783 | goto probe_failed; | |
1784 | } | |
c4028958 | 1785 | INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); |
afaf5a2d | 1786 | |
f4f5df23 VC |
1787 | /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc |
1788 | * (which is called indirectly by qla4xxx_initialize_adapter), | |
1789 | * so that irqs will be registered after crbinit but before | |
1790 | * mbx_intr_enable. | |
1791 | */ | |
1792 | if (!is_qla8022(ha)) { | |
1793 | ret = qla4xxx_request_irqs(ha); | |
1794 | if (ret) { | |
1795 | ql4_printk(KERN_WARNING, ha, "Failed to reserve " | |
1796 | "interrupt %d already in use.\n", pdev->irq); | |
1797 | goto probe_failed; | |
1798 | } | |
afaf5a2d | 1799 | } |
afaf5a2d | 1800 | |
2232be0d | 1801 | pci_save_state(ha->pdev); |
f4f5df23 | 1802 | ha->isp_ops->enable_intrs(ha); |
afaf5a2d DS |
1803 | |
1804 | /* Start timer thread. */ | |
1805 | qla4xxx_start_timer(ha, qla4xxx_timer, 1); | |
1806 | ||
1807 | set_bit(AF_INIT_DONE, &ha->flags); | |
1808 | ||
1809 | pci_set_drvdata(pdev, ha); | |
1810 | ||
1811 | ret = scsi_add_host(host, &pdev->dev); | |
1812 | if (ret) | |
1813 | goto probe_failed; | |
1814 | ||
afaf5a2d DS |
1815 | printk(KERN_INFO |
1816 | " QLogic iSCSI HBA Driver version: %s\n" | |
1817 | " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", | |
1818 | qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), | |
1819 | ha->host_no, ha->firmware_version[0], ha->firmware_version[1], | |
1820 | ha->patch_number, ha->build_number); | |
921601b7 | 1821 | scsi_scan_host(host); |
afaf5a2d DS |
1822 | return 0; |
1823 | ||
afaf5a2d DS |
1824 | probe_failed: |
1825 | qla4xxx_free_adapter(ha); | |
f4f5df23 VC |
1826 | |
1827 | probe_failed_ioconfig: | |
2232be0d | 1828 | pci_disable_pcie_error_reporting(pdev); |
afaf5a2d DS |
1829 | scsi_host_put(ha->host); |
1830 | ||
1831 | probe_disable_device: | |
1832 | pci_disable_device(pdev); | |
1833 | ||
1834 | return ret; | |
1835 | } | |
1836 | ||
7eece5a0 KH |
1837 | /** |
1838 | * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize | |
1839 | * @ha: pointer to adapter structure | |
1840 | * | |
1841 | * Mark the other ISP-4xxx port to indicate that the driver is being removed, | |
1842 | * so that the other port will not re-initialize while in the process of | |
1843 | * removing the ha due to driver unload or hba hotplug. | |
1844 | **/ | |
1845 | static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha) | |
1846 | { | |
1847 | struct scsi_qla_host *other_ha = NULL; | |
1848 | struct pci_dev *other_pdev = NULL; | |
1849 | int fn = ISP4XXX_PCI_FN_2; | |
1850 | ||
1851 | /*iscsi function numbers for ISP4xxx is 1 and 3*/ | |
1852 | if (PCI_FUNC(ha->pdev->devfn) & BIT_1) | |
1853 | fn = ISP4XXX_PCI_FN_1; | |
1854 | ||
1855 | other_pdev = | |
1856 | pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), | |
1857 | ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), | |
1858 | fn)); | |
1859 | ||
1860 | /* Get other_ha if other_pdev is valid and state is enable*/ | |
1861 | if (other_pdev) { | |
1862 | if (atomic_read(&other_pdev->enable_cnt)) { | |
1863 | other_ha = pci_get_drvdata(other_pdev); | |
1864 | if (other_ha) { | |
1865 | set_bit(AF_HA_REMOVAL, &other_ha->flags); | |
1866 | DEBUG2(ql4_printk(KERN_INFO, ha, "%s: " | |
1867 | "Prevent %s reinit\n", __func__, | |
1868 | dev_name(&other_ha->pdev->dev))); | |
1869 | } | |
1870 | } | |
1871 | pci_dev_put(other_pdev); | |
1872 | } | |
1873 | } | |
1874 | ||
afaf5a2d DS |
1875 | /** |
1876 | * qla4xxx_remove_adapter - calback function to remove adapter. | |
1877 | * @pci_dev: PCI device pointer | |
1878 | **/ | |
1879 | static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) | |
1880 | { | |
1881 | struct scsi_qla_host *ha; | |
1882 | ||
1883 | ha = pci_get_drvdata(pdev); | |
1884 | ||
7eece5a0 KH |
1885 | if (!is_qla8022(ha)) |
1886 | qla4xxx_prevent_other_port_reinit(ha); | |
bee4fe8e | 1887 | |
afaf5a2d DS |
1888 | /* remove devs from iscsi_sessions to scsi_devices */ |
1889 | qla4xxx_free_ddb_list(ha); | |
1890 | ||
1891 | scsi_remove_host(ha->host); | |
1892 | ||
1893 | qla4xxx_free_adapter(ha); | |
1894 | ||
1895 | scsi_host_put(ha->host); | |
1896 | ||
2232be0d | 1897 | pci_disable_pcie_error_reporting(pdev); |
f4f5df23 | 1898 | pci_disable_device(pdev); |
afaf5a2d DS |
1899 | pci_set_drvdata(pdev, NULL); |
1900 | } | |
1901 | ||
1902 | /** | |
1903 | * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. | |
1904 | * @ha: HA context | |
1905 | * | |
1906 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1907 | * supported addressing method. | |
1908 | */ | |
47975477 | 1909 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) |
afaf5a2d DS |
1910 | { |
1911 | int retval; | |
1912 | ||
1913 | /* Update our PCI device dma_mask for full 64 bit mask */ | |
6a35528a YH |
1914 | if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { |
1915 | if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { | |
afaf5a2d DS |
1916 | dev_dbg(&ha->pdev->dev, |
1917 | "Failed to set 64 bit PCI consistent mask; " | |
1918 | "using 32 bit.\n"); | |
1919 | retval = pci_set_consistent_dma_mask(ha->pdev, | |
284901a9 | 1920 | DMA_BIT_MASK(32)); |
afaf5a2d DS |
1921 | } |
1922 | } else | |
284901a9 | 1923 | retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); |
afaf5a2d DS |
1924 | } |
1925 | ||
1926 | static int qla4xxx_slave_alloc(struct scsi_device *sdev) | |
1927 | { | |
1928 | struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); | |
1929 | struct ddb_entry *ddb = sess->dd_data; | |
8bb4033d | 1930 | int queue_depth = QL4_DEF_QDEPTH; |
afaf5a2d DS |
1931 | |
1932 | sdev->hostdata = ddb; | |
1933 | sdev->tagged_supported = 1; | |
8bb4033d VC |
1934 | |
1935 | if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU) | |
1936 | queue_depth = ql4xmaxqdepth; | |
1937 | ||
1938 | scsi_activate_tcq(sdev, queue_depth); | |
afaf5a2d DS |
1939 | return 0; |
1940 | } | |
1941 | ||
1942 | static int qla4xxx_slave_configure(struct scsi_device *sdev) | |
1943 | { | |
1944 | sdev->tagged_supported = 1; | |
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | static void qla4xxx_slave_destroy(struct scsi_device *sdev) | |
1949 | { | |
1950 | scsi_deactivate_tcq(sdev, 1); | |
1951 | } | |
1952 | ||
1953 | /** | |
1954 | * qla4xxx_del_from_active_array - returns an active srb | |
1955 | * @ha: Pointer to host adapter structure. | |
fd589a8f | 1956 | * @index: index into the active_array |
afaf5a2d DS |
1957 | * |
1958 | * This routine removes and returns the srb at the specified index | |
1959 | **/ | |
f4f5df23 VC |
1960 | struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, |
1961 | uint32_t index) | |
afaf5a2d DS |
1962 | { |
1963 | struct srb *srb = NULL; | |
5369887a | 1964 | struct scsi_cmnd *cmd = NULL; |
afaf5a2d | 1965 | |
5369887a VC |
1966 | cmd = scsi_host_find_tag(ha->host, index); |
1967 | if (!cmd) | |
afaf5a2d DS |
1968 | return srb; |
1969 | ||
5369887a VC |
1970 | srb = (struct srb *)CMD_SP(cmd); |
1971 | if (!srb) | |
afaf5a2d DS |
1972 | return srb; |
1973 | ||
1974 | /* update counters */ | |
1975 | if (srb->flags & SRB_DMA_VALID) { | |
1976 | ha->req_q_count += srb->iocb_cnt; | |
1977 | ha->iocb_cnt -= srb->iocb_cnt; | |
1978 | if (srb->cmd) | |
5369887a VC |
1979 | srb->cmd->host_scribble = |
1980 | (unsigned char *)(unsigned long) MAX_SRBS; | |
afaf5a2d DS |
1981 | } |
1982 | return srb; | |
1983 | } | |
1984 | ||
afaf5a2d DS |
1985 | /** |
1986 | * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware | |
09a0f719 | 1987 | * @ha: Pointer to host adapter structure. |
afaf5a2d DS |
1988 | * @cmd: Scsi Command to wait on. |
1989 | * | |
1990 | * This routine waits for the command to be returned by the Firmware | |
1991 | * for some max time. | |
1992 | **/ | |
1993 | static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, | |
1994 | struct scsi_cmnd *cmd) | |
1995 | { | |
1996 | int done = 0; | |
1997 | struct srb *rp; | |
1998 | uint32_t max_wait_time = EH_WAIT_CMD_TOV; | |
2232be0d LC |
1999 | int ret = SUCCESS; |
2000 | ||
2001 | /* Dont wait on command if PCI error is being handled | |
2002 | * by PCI AER driver | |
2003 | */ | |
2004 | if (unlikely(pci_channel_offline(ha->pdev)) || | |
2005 | (test_bit(AF_EEH_BUSY, &ha->flags))) { | |
2006 | ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", | |
2007 | ha->host_no, __func__); | |
2008 | return ret; | |
2009 | } | |
afaf5a2d DS |
2010 | |
2011 | do { | |
2012 | /* Checking to see if its returned to OS */ | |
5369887a | 2013 | rp = (struct srb *) CMD_SP(cmd); |
afaf5a2d DS |
2014 | if (rp == NULL) { |
2015 | done++; | |
2016 | break; | |
2017 | } | |
2018 | ||
2019 | msleep(2000); | |
2020 | } while (max_wait_time--); | |
2021 | ||
2022 | return done; | |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * qla4xxx_wait_for_hba_online - waits for HBA to come online | |
2027 | * @ha: Pointer to host adapter structure | |
2028 | **/ | |
2029 | static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) | |
2030 | { | |
2031 | unsigned long wait_online; | |
2032 | ||
f581a3f7 | 2033 | wait_online = jiffies + (HBA_ONLINE_TOV * HZ); |
afaf5a2d DS |
2034 | while (time_before(jiffies, wait_online)) { |
2035 | ||
2036 | if (adapter_up(ha)) | |
2037 | return QLA_SUCCESS; | |
afaf5a2d DS |
2038 | |
2039 | msleep(2000); | |
2040 | } | |
2041 | ||
2042 | return QLA_ERROR; | |
2043 | } | |
2044 | ||
2045 | /** | |
ce545039 | 2046 | * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. |
fd589a8f | 2047 | * @ha: pointer to HBA |
afaf5a2d DS |
2048 | * @t: target id |
2049 | * @l: lun id | |
2050 | * | |
2051 | * This function waits for all outstanding commands to a lun to complete. It | |
2052 | * returns 0 if all pending commands are returned and 1 otherwise. | |
2053 | **/ | |
ce545039 MC |
2054 | static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, |
2055 | struct scsi_target *stgt, | |
2056 | struct scsi_device *sdev) | |
afaf5a2d DS |
2057 | { |
2058 | int cnt; | |
2059 | int status = 0; | |
2060 | struct scsi_cmnd *cmd; | |
2061 | ||
2062 | /* | |
ce545039 MC |
2063 | * Waiting for all commands for the designated target or dev |
2064 | * in the active array | |
afaf5a2d DS |
2065 | */ |
2066 | for (cnt = 0; cnt < ha->host->can_queue; cnt++) { | |
2067 | cmd = scsi_host_find_tag(ha->host, cnt); | |
ce545039 MC |
2068 | if (cmd && stgt == scsi_target(cmd->device) && |
2069 | (!sdev || sdev == cmd->device)) { | |
afaf5a2d DS |
2070 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { |
2071 | status++; | |
2072 | break; | |
2073 | } | |
2074 | } | |
2075 | } | |
2076 | return status; | |
2077 | } | |
2078 | ||
09a0f719 VC |
2079 | /** |
2080 | * qla4xxx_eh_abort - callback for abort task. | |
2081 | * @cmd: Pointer to Linux's SCSI command structure | |
2082 | * | |
2083 | * This routine is called by the Linux OS to abort the specified | |
2084 | * command. | |
2085 | **/ | |
2086 | static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) | |
2087 | { | |
2088 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
2089 | unsigned int id = cmd->device->id; | |
2090 | unsigned int lun = cmd->device->lun; | |
92b3e5bb | 2091 | unsigned long flags; |
09a0f719 VC |
2092 | struct srb *srb = NULL; |
2093 | int ret = SUCCESS; | |
2094 | int wait = 0; | |
2095 | ||
c2660df3 | 2096 | ql4_printk(KERN_INFO, ha, |
5cd049a5 CH |
2097 | "scsi%ld:%d:%d: Abort command issued cmd=%p\n", |
2098 | ha->host_no, id, lun, cmd); | |
09a0f719 | 2099 | |
92b3e5bb | 2100 | spin_lock_irqsave(&ha->hardware_lock, flags); |
09a0f719 | 2101 | srb = (struct srb *) CMD_SP(cmd); |
92b3e5bb MC |
2102 | if (!srb) { |
2103 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
09a0f719 | 2104 | return SUCCESS; |
92b3e5bb | 2105 | } |
09a0f719 | 2106 | kref_get(&srb->srb_ref); |
92b3e5bb | 2107 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
09a0f719 VC |
2108 | |
2109 | if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { | |
2110 | DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", | |
2111 | ha->host_no, id, lun)); | |
2112 | ret = FAILED; | |
2113 | } else { | |
2114 | DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", | |
2115 | ha->host_no, id, lun)); | |
2116 | wait = 1; | |
2117 | } | |
2118 | ||
2119 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); | |
2120 | ||
2121 | /* Wait for command to complete */ | |
2122 | if (wait) { | |
2123 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { | |
2124 | DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", | |
2125 | ha->host_no, id, lun)); | |
2126 | ret = FAILED; | |
2127 | } | |
2128 | } | |
2129 | ||
c2660df3 | 2130 | ql4_printk(KERN_INFO, ha, |
09a0f719 | 2131 | "scsi%ld:%d:%d: Abort command - %s\n", |
25985edc | 2132 | ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed"); |
09a0f719 VC |
2133 | |
2134 | return ret; | |
2135 | } | |
2136 | ||
afaf5a2d DS |
2137 | /** |
2138 | * qla4xxx_eh_device_reset - callback for target reset. | |
2139 | * @cmd: Pointer to Linux's SCSI command structure | |
2140 | * | |
2141 | * This routine is called by the Linux OS to reset all luns on the | |
2142 | * specified target. | |
2143 | **/ | |
2144 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
2145 | { | |
2146 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
2147 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
afaf5a2d DS |
2148 | int ret = FAILED, stat; |
2149 | ||
612f7348 | 2150 | if (!ddb_entry) |
afaf5a2d DS |
2151 | return ret; |
2152 | ||
c01be6dc MC |
2153 | ret = iscsi_block_scsi_eh(cmd); |
2154 | if (ret) | |
2155 | return ret; | |
2156 | ret = FAILED; | |
2157 | ||
c2660df3 | 2158 | ql4_printk(KERN_INFO, ha, |
afaf5a2d DS |
2159 | "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, |
2160 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
2161 | ||
2162 | DEBUG2(printk(KERN_INFO | |
2163 | "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," | |
2164 | "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, | |
242f9dcb | 2165 | cmd, jiffies, cmd->request->timeout / HZ, |
afaf5a2d DS |
2166 | ha->dpc_flags, cmd->result, cmd->allowed)); |
2167 | ||
2168 | /* FIXME: wait for hba to go online */ | |
2169 | stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); | |
2170 | if (stat != QLA_SUCCESS) { | |
c2660df3 | 2171 | ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); |
afaf5a2d DS |
2172 | goto eh_dev_reset_done; |
2173 | } | |
2174 | ||
ce545039 MC |
2175 | if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), |
2176 | cmd->device)) { | |
c2660df3 | 2177 | ql4_printk(KERN_INFO, ha, |
ce545039 MC |
2178 | "DEVICE RESET FAILED - waiting for " |
2179 | "commands.\n"); | |
2180 | goto eh_dev_reset_done; | |
afaf5a2d DS |
2181 | } |
2182 | ||
9d562913 DS |
2183 | /* Send marker. */ |
2184 | if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, | |
2185 | MM_LUN_RESET) != QLA_SUCCESS) | |
2186 | goto eh_dev_reset_done; | |
2187 | ||
c2660df3 | 2188 | ql4_printk(KERN_INFO, ha, |
afaf5a2d DS |
2189 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", |
2190 | ha->host_no, cmd->device->channel, cmd->device->id, | |
2191 | cmd->device->lun); | |
2192 | ||
2193 | ret = SUCCESS; | |
2194 | ||
2195 | eh_dev_reset_done: | |
2196 | ||
2197 | return ret; | |
2198 | } | |
2199 | ||
ce545039 MC |
2200 | /** |
2201 | * qla4xxx_eh_target_reset - callback for target reset. | |
2202 | * @cmd: Pointer to Linux's SCSI command structure | |
2203 | * | |
2204 | * This routine is called by the Linux OS to reset the target. | |
2205 | **/ | |
2206 | static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) | |
2207 | { | |
2208 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
2209 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
c01be6dc | 2210 | int stat, ret; |
ce545039 MC |
2211 | |
2212 | if (!ddb_entry) | |
2213 | return FAILED; | |
2214 | ||
c01be6dc MC |
2215 | ret = iscsi_block_scsi_eh(cmd); |
2216 | if (ret) | |
2217 | return ret; | |
2218 | ||
ce545039 MC |
2219 | starget_printk(KERN_INFO, scsi_target(cmd->device), |
2220 | "WARM TARGET RESET ISSUED.\n"); | |
2221 | ||
2222 | DEBUG2(printk(KERN_INFO | |
2223 | "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " | |
2224 | "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", | |
242f9dcb | 2225 | ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, |
ce545039 MC |
2226 | ha->dpc_flags, cmd->result, cmd->allowed)); |
2227 | ||
2228 | stat = qla4xxx_reset_target(ha, ddb_entry); | |
2229 | if (stat != QLA_SUCCESS) { | |
2230 | starget_printk(KERN_INFO, scsi_target(cmd->device), | |
2231 | "WARM TARGET RESET FAILED.\n"); | |
2232 | return FAILED; | |
2233 | } | |
2234 | ||
ce545039 MC |
2235 | if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), |
2236 | NULL)) { | |
2237 | starget_printk(KERN_INFO, scsi_target(cmd->device), | |
2238 | "WARM TARGET DEVICE RESET FAILED - " | |
2239 | "waiting for commands.\n"); | |
2240 | return FAILED; | |
2241 | } | |
2242 | ||
9d562913 DS |
2243 | /* Send marker. */ |
2244 | if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, | |
2245 | MM_TGT_WARM_RESET) != QLA_SUCCESS) { | |
2246 | starget_printk(KERN_INFO, scsi_target(cmd->device), | |
2247 | "WARM TARGET DEVICE RESET FAILED - " | |
2248 | "marker iocb failed.\n"); | |
2249 | return FAILED; | |
2250 | } | |
2251 | ||
ce545039 MC |
2252 | starget_printk(KERN_INFO, scsi_target(cmd->device), |
2253 | "WARM TARGET RESET SUCCEEDED.\n"); | |
2254 | return SUCCESS; | |
2255 | } | |
2256 | ||
afaf5a2d DS |
2257 | /** |
2258 | * qla4xxx_eh_host_reset - kernel callback | |
2259 | * @cmd: Pointer to Linux's SCSI command structure | |
2260 | * | |
2261 | * This routine is invoked by the Linux kernel to perform fatal error | |
2262 | * recovery on the specified adapter. | |
2263 | **/ | |
2264 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
2265 | { | |
2266 | int return_status = FAILED; | |
2267 | struct scsi_qla_host *ha; | |
2268 | ||
2269 | ha = (struct scsi_qla_host *) cmd->device->host->hostdata; | |
2270 | ||
f4f5df23 VC |
2271 | if (ql4xdontresethba) { |
2272 | DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", | |
2273 | ha->host_no, __func__)); | |
2274 | return FAILED; | |
2275 | } | |
2276 | ||
c2660df3 | 2277 | ql4_printk(KERN_INFO, ha, |
dca05c4c | 2278 | "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, |
afaf5a2d DS |
2279 | cmd->device->channel, cmd->device->id, cmd->device->lun); |
2280 | ||
2281 | if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
2282 | DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " | |
2283 | "DEAD.\n", ha->host_no, cmd->device->channel, | |
2284 | __func__)); | |
2285 | ||
2286 | return FAILED; | |
2287 | } | |
2288 | ||
f4f5df23 VC |
2289 | if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { |
2290 | if (is_qla8022(ha)) | |
2291 | set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); | |
2292 | else | |
2293 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
2294 | } | |
50a29aec | 2295 | |
f4f5df23 | 2296 | if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) |
afaf5a2d | 2297 | return_status = SUCCESS; |
afaf5a2d | 2298 | |
c2660df3 | 2299 | ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", |
25985edc | 2300 | return_status == FAILED ? "FAILED" : "SUCCEEDED"); |
afaf5a2d DS |
2301 | |
2302 | return return_status; | |
2303 | } | |
2304 | ||
2232be0d LC |
2305 | /* PCI AER driver recovers from all correctable errors w/o |
2306 | * driver intervention. For uncorrectable errors PCI AER | |
2307 | * driver calls the following device driver's callbacks | |
2308 | * | |
2309 | * - Fatal Errors - link_reset | |
2310 | * - Non-Fatal Errors - driver's pci_error_detected() which | |
2311 | * returns CAN_RECOVER, NEED_RESET or DISCONNECT. | |
2312 | * | |
2313 | * PCI AER driver calls | |
2314 | * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled | |
2315 | * returns RECOVERED or NEED_RESET if fw_hung | |
2316 | * NEED_RESET - driver's slot_reset() | |
2317 | * DISCONNECT - device is dead & cannot recover | |
2318 | * RECOVERED - driver's pci_resume() | |
2319 | */ | |
2320 | static pci_ers_result_t | |
2321 | qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
2322 | { | |
2323 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2324 | ||
2325 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", | |
2326 | ha->host_no, __func__, state); | |
2327 | ||
2328 | if (!is_aer_supported(ha)) | |
2329 | return PCI_ERS_RESULT_NONE; | |
2330 | ||
2331 | switch (state) { | |
2332 | case pci_channel_io_normal: | |
2333 | clear_bit(AF_EEH_BUSY, &ha->flags); | |
2334 | return PCI_ERS_RESULT_CAN_RECOVER; | |
2335 | case pci_channel_io_frozen: | |
2336 | set_bit(AF_EEH_BUSY, &ha->flags); | |
2337 | qla4xxx_mailbox_premature_completion(ha); | |
2338 | qla4xxx_free_irqs(ha); | |
2339 | pci_disable_device(pdev); | |
7b3595df VC |
2340 | /* Return back all IOs */ |
2341 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); | |
2232be0d LC |
2342 | return PCI_ERS_RESULT_NEED_RESET; |
2343 | case pci_channel_io_perm_failure: | |
2344 | set_bit(AF_EEH_BUSY, &ha->flags); | |
2345 | set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); | |
2346 | qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); | |
2347 | return PCI_ERS_RESULT_DISCONNECT; | |
2348 | } | |
2349 | return PCI_ERS_RESULT_NEED_RESET; | |
2350 | } | |
2351 | ||
2352 | /** | |
2353 | * qla4xxx_pci_mmio_enabled() gets called if | |
2354 | * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER | |
2355 | * and read/write to the device still works. | |
2356 | **/ | |
2357 | static pci_ers_result_t | |
2358 | qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) | |
2359 | { | |
2360 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2361 | ||
2362 | if (!is_aer_supported(ha)) | |
2363 | return PCI_ERS_RESULT_NONE; | |
2364 | ||
7b3595df | 2365 | return PCI_ERS_RESULT_RECOVERED; |
2232be0d LC |
2366 | } |
2367 | ||
7b3595df | 2368 | static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) |
2232be0d LC |
2369 | { |
2370 | uint32_t rval = QLA_ERROR; | |
7b3595df | 2371 | uint32_t ret = 0; |
2232be0d LC |
2372 | int fn; |
2373 | struct pci_dev *other_pdev = NULL; | |
2374 | ||
2375 | ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); | |
2376 | ||
2377 | set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); | |
2378 | ||
2379 | if (test_bit(AF_ONLINE, &ha->flags)) { | |
2380 | clear_bit(AF_ONLINE, &ha->flags); | |
2381 | qla4xxx_mark_all_devices_missing(ha); | |
2382 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
2232be0d LC |
2383 | } |
2384 | ||
2385 | fn = PCI_FUNC(ha->pdev->devfn); | |
2386 | while (fn > 0) { | |
2387 | fn--; | |
2388 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " | |
2389 | "func %x\n", ha->host_no, __func__, fn); | |
2390 | /* Get the pci device given the domain, bus, | |
2391 | * slot/function number */ | |
2392 | other_pdev = | |
2393 | pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), | |
2394 | ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), | |
2395 | fn)); | |
2396 | ||
2397 | if (!other_pdev) | |
2398 | continue; | |
2399 | ||
2400 | if (atomic_read(&other_pdev->enable_cnt)) { | |
2401 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " | |
2402 | "func in enabled state%x\n", ha->host_no, | |
2403 | __func__, fn); | |
2404 | pci_dev_put(other_pdev); | |
2405 | break; | |
2406 | } | |
2407 | pci_dev_put(other_pdev); | |
2408 | } | |
2409 | ||
2410 | /* The first function on the card, the reset owner will | |
2411 | * start & initialize the firmware. The other functions | |
2412 | * on the card will reset the firmware context | |
2413 | */ | |
2414 | if (!fn) { | |
2415 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " | |
2416 | "0x%x is the owner\n", ha->host_no, __func__, | |
2417 | ha->pdev->devfn); | |
2418 | ||
2419 | qla4_8xxx_idc_lock(ha); | |
2420 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
2421 | QLA82XX_DEV_COLD); | |
2422 | ||
2423 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, | |
2424 | QLA82XX_IDC_VERSION); | |
2425 | ||
2426 | qla4_8xxx_idc_unlock(ha); | |
2427 | clear_bit(AF_FW_RECOVERY, &ha->flags); | |
2428 | rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); | |
2429 | qla4_8xxx_idc_lock(ha); | |
2430 | ||
2431 | if (rval != QLA_SUCCESS) { | |
2432 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " | |
2433 | "FAILED\n", ha->host_no, __func__); | |
2434 | qla4_8xxx_clear_drv_active(ha); | |
2435 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
2436 | QLA82XX_DEV_FAILED); | |
2437 | } else { | |
2438 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " | |
2439 | "READY\n", ha->host_no, __func__); | |
2440 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
2441 | QLA82XX_DEV_READY); | |
2442 | /* Clear driver state register */ | |
2443 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); | |
2444 | qla4_8xxx_set_drv_active(ha); | |
7b3595df VC |
2445 | ret = qla4xxx_request_irqs(ha); |
2446 | if (ret) { | |
2447 | ql4_printk(KERN_WARNING, ha, "Failed to " | |
2448 | "reserve interrupt %d already in use.\n", | |
2449 | ha->pdev->irq); | |
2450 | rval = QLA_ERROR; | |
2451 | } else { | |
2452 | ha->isp_ops->enable_intrs(ha); | |
2453 | rval = QLA_SUCCESS; | |
2454 | } | |
2232be0d LC |
2455 | } |
2456 | qla4_8xxx_idc_unlock(ha); | |
2457 | } else { | |
2458 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " | |
2459 | "the reset owner\n", ha->host_no, __func__, | |
2460 | ha->pdev->devfn); | |
2461 | if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == | |
2462 | QLA82XX_DEV_READY)) { | |
2463 | clear_bit(AF_FW_RECOVERY, &ha->flags); | |
2464 | rval = qla4xxx_initialize_adapter(ha, | |
2465 | PRESERVE_DDB_LIST); | |
7b3595df VC |
2466 | if (rval == QLA_SUCCESS) { |
2467 | ret = qla4xxx_request_irqs(ha); | |
2468 | if (ret) { | |
2469 | ql4_printk(KERN_WARNING, ha, "Failed to" | |
2470 | " reserve interrupt %d already in" | |
2471 | " use.\n", ha->pdev->irq); | |
2472 | rval = QLA_ERROR; | |
2473 | } else { | |
2474 | ha->isp_ops->enable_intrs(ha); | |
2475 | rval = QLA_SUCCESS; | |
2476 | } | |
2477 | } | |
2232be0d LC |
2478 | qla4_8xxx_idc_lock(ha); |
2479 | qla4_8xxx_set_drv_active(ha); | |
2480 | qla4_8xxx_idc_unlock(ha); | |
2481 | } | |
2482 | } | |
2483 | clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); | |
2484 | return rval; | |
2485 | } | |
2486 | ||
2487 | static pci_ers_result_t | |
2488 | qla4xxx_pci_slot_reset(struct pci_dev *pdev) | |
2489 | { | |
2490 | pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; | |
2491 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2492 | int rc; | |
2493 | ||
2494 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", | |
2495 | ha->host_no, __func__); | |
2496 | ||
2497 | if (!is_aer_supported(ha)) | |
2498 | return PCI_ERS_RESULT_NONE; | |
2499 | ||
2500 | /* Restore the saved state of PCIe device - | |
2501 | * BAR registers, PCI Config space, PCIX, MSI, | |
2502 | * IOV states | |
2503 | */ | |
2504 | pci_restore_state(pdev); | |
2505 | ||
2506 | /* pci_restore_state() clears the saved_state flag of the device | |
2507 | * save restored state which resets saved_state flag | |
2508 | */ | |
2509 | pci_save_state(pdev); | |
2510 | ||
2511 | /* Initialize device or resume if in suspended state */ | |
2512 | rc = pci_enable_device(pdev); | |
2513 | if (rc) { | |
25985edc | 2514 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable " |
2232be0d LC |
2515 | "device after reset\n", ha->host_no, __func__); |
2516 | goto exit_slot_reset; | |
2517 | } | |
2518 | ||
7b3595df | 2519 | ha->isp_ops->disable_intrs(ha); |
2232be0d LC |
2520 | |
2521 | if (is_qla8022(ha)) { | |
2522 | if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { | |
2523 | ret = PCI_ERS_RESULT_RECOVERED; | |
2524 | goto exit_slot_reset; | |
2525 | } else | |
2526 | goto exit_slot_reset; | |
2527 | } | |
2528 | ||
2529 | exit_slot_reset: | |
2530 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" | |
2531 | "device after reset\n", ha->host_no, __func__, ret); | |
2532 | return ret; | |
2533 | } | |
2534 | ||
2535 | static void | |
2536 | qla4xxx_pci_resume(struct pci_dev *pdev) | |
2537 | { | |
2538 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2539 | int ret; | |
2540 | ||
2541 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", | |
2542 | ha->host_no, __func__); | |
2543 | ||
2544 | ret = qla4xxx_wait_for_hba_online(ha); | |
2545 | if (ret != QLA_SUCCESS) { | |
2546 | ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " | |
2547 | "resume I/O from slot/link_reset\n", ha->host_no, | |
2548 | __func__); | |
2549 | } | |
2550 | ||
2551 | pci_cleanup_aer_uncorrect_error_status(pdev); | |
2552 | clear_bit(AF_EEH_BUSY, &ha->flags); | |
2553 | } | |
2554 | ||
2555 | static struct pci_error_handlers qla4xxx_err_handler = { | |
2556 | .error_detected = qla4xxx_pci_error_detected, | |
2557 | .mmio_enabled = qla4xxx_pci_mmio_enabled, | |
2558 | .slot_reset = qla4xxx_pci_slot_reset, | |
2559 | .resume = qla4xxx_pci_resume, | |
2560 | }; | |
2561 | ||
afaf5a2d DS |
2562 | static struct pci_device_id qla4xxx_pci_tbl[] = { |
2563 | { | |
2564 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2565 | .device = PCI_DEVICE_ID_QLOGIC_ISP4010, | |
2566 | .subvendor = PCI_ANY_ID, | |
2567 | .subdevice = PCI_ANY_ID, | |
2568 | }, | |
2569 | { | |
2570 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2571 | .device = PCI_DEVICE_ID_QLOGIC_ISP4022, | |
2572 | .subvendor = PCI_ANY_ID, | |
2573 | .subdevice = PCI_ANY_ID, | |
2574 | }, | |
d915058f DS |
2575 | { |
2576 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2577 | .device = PCI_DEVICE_ID_QLOGIC_ISP4032, | |
2578 | .subvendor = PCI_ANY_ID, | |
2579 | .subdevice = PCI_ANY_ID, | |
2580 | }, | |
f4f5df23 VC |
2581 | { |
2582 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2583 | .device = PCI_DEVICE_ID_QLOGIC_ISP8022, | |
2584 | .subvendor = PCI_ANY_ID, | |
2585 | .subdevice = PCI_ANY_ID, | |
2586 | }, | |
afaf5a2d DS |
2587 | {0, 0}, |
2588 | }; | |
2589 | MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); | |
2590 | ||
47975477 | 2591 | static struct pci_driver qla4xxx_pci_driver = { |
afaf5a2d DS |
2592 | .name = DRIVER_NAME, |
2593 | .id_table = qla4xxx_pci_tbl, | |
2594 | .probe = qla4xxx_probe_adapter, | |
2595 | .remove = qla4xxx_remove_adapter, | |
2232be0d | 2596 | .err_handler = &qla4xxx_err_handler, |
afaf5a2d DS |
2597 | }; |
2598 | ||
2599 | static int __init qla4xxx_module_init(void) | |
2600 | { | |
2601 | int ret; | |
2602 | ||
2603 | /* Allocate cache for SRBs. */ | |
2604 | srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, | |
20c2df83 | 2605 | SLAB_HWCACHE_ALIGN, NULL); |
afaf5a2d DS |
2606 | if (srb_cachep == NULL) { |
2607 | printk(KERN_ERR | |
2608 | "%s: Unable to allocate SRB cache..." | |
2609 | "Failing load!\n", DRIVER_NAME); | |
2610 | ret = -ENOMEM; | |
2611 | goto no_srp_cache; | |
2612 | } | |
2613 | ||
2614 | /* Derive version string. */ | |
2615 | strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); | |
11010fec | 2616 | if (ql4xextended_error_logging) |
afaf5a2d DS |
2617 | strcat(qla4xxx_version_str, "-debug"); |
2618 | ||
2619 | qla4xxx_scsi_transport = | |
2620 | iscsi_register_transport(&qla4xxx_iscsi_transport); | |
2621 | if (!qla4xxx_scsi_transport){ | |
2622 | ret = -ENODEV; | |
2623 | goto release_srb_cache; | |
2624 | } | |
2625 | ||
afaf5a2d DS |
2626 | ret = pci_register_driver(&qla4xxx_pci_driver); |
2627 | if (ret) | |
2628 | goto unregister_transport; | |
2629 | ||
2630 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
2631 | return 0; | |
5ae16db3 | 2632 | |
afaf5a2d DS |
2633 | unregister_transport: |
2634 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
2635 | release_srb_cache: | |
2636 | kmem_cache_destroy(srb_cachep); | |
2637 | no_srp_cache: | |
2638 | return ret; | |
2639 | } | |
2640 | ||
2641 | static void __exit qla4xxx_module_exit(void) | |
2642 | { | |
2643 | pci_unregister_driver(&qla4xxx_pci_driver); | |
2644 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
2645 | kmem_cache_destroy(srb_cachep); | |
2646 | } | |
2647 | ||
2648 | module_init(qla4xxx_module_init); | |
2649 | module_exit(qla4xxx_module_exit); | |
2650 | ||
2651 | MODULE_AUTHOR("QLogic Corporation"); | |
2652 | MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); | |
2653 | MODULE_LICENSE("GPL"); | |
2654 | MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |