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Commit | Line | Data |
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afaf5a2d DS |
1 | /* |
2 | * QLogic iSCSI HBA Driver | |
3 | * Copyright (c) 2003-2006 QLogic Corporation | |
4 | * | |
5 | * See LICENSE.qla4xxx for copyright and licensing details. | |
6 | */ | |
7 | #include <linux/moduleparam.h> | |
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 | */ | |
32 | int ql4xdiscoverywait = 60; | |
f4f5df23 | 33 | module_param(ql4xdiscoverywait, int, S_IRUGO | S_IWUSR); |
afaf5a2d | 34 | MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time"); |
f4f5df23 | 35 | |
afaf5a2d | 36 | int ql4xdontresethba = 0; |
f4f5df23 | 37 | module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR); |
afaf5a2d | 38 | MODULE_PARM_DESC(ql4xdontresethba, |
f4f5df23 VC |
39 | "Don't reset the HBA for driver recovery \n" |
40 | " 0 - It will reset HBA (Default)\n" | |
41 | " 1 - It will NOT reset HBA"); | |
afaf5a2d | 42 | |
11010fec | 43 | int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */ |
f4f5df23 | 44 | module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR); |
11010fec | 45 | MODULE_PARM_DESC(ql4xextended_error_logging, |
afaf5a2d DS |
46 | "Option to enable extended error logging, " |
47 | "Default is 0 - no logging, 1 - debug logging"); | |
48 | ||
f4f5df23 VC |
49 | int ql4xenablemsix = 1; |
50 | module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR); | |
51 | MODULE_PARM_DESC(ql4xenablemsix, | |
52 | "Set to enable MSI or MSI-X interrupt mechanism.\n" | |
53 | " 0 = enable INTx interrupt mechanism.\n" | |
54 | " 1 = enable MSI-X interrupt mechanism (Default).\n" | |
55 | " 2 = enable MSI interrupt mechanism."); | |
477ffb9d | 56 | |
d510d965 MC |
57 | #define QL4_DEF_QDEPTH 32 |
58 | ||
afaf5a2d DS |
59 | /* |
60 | * SCSI host template entry points | |
61 | */ | |
47975477 | 62 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha); |
afaf5a2d DS |
63 | |
64 | /* | |
65 | * iSCSI template entry points | |
66 | */ | |
2174a04e MC |
67 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
68 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
69 | struct sockaddr *dst_addr); | |
afaf5a2d DS |
70 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, |
71 | enum iscsi_param param, char *buf); | |
72 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, | |
73 | enum iscsi_param param, char *buf); | |
aa1e93a2 MC |
74 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
75 | enum iscsi_host_param param, char *buf); | |
afaf5a2d | 76 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session); |
5c656af7 | 77 | static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc); |
afaf5a2d DS |
78 | |
79 | /* | |
80 | * SCSI host template entry points | |
81 | */ | |
f281233d | 82 | static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd); |
09a0f719 | 83 | static int qla4xxx_eh_abort(struct scsi_cmnd *cmd); |
afaf5a2d | 84 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd); |
ce545039 | 85 | static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd); |
afaf5a2d DS |
86 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); |
87 | static int qla4xxx_slave_alloc(struct scsi_device *device); | |
88 | static int qla4xxx_slave_configure(struct scsi_device *device); | |
89 | static void qla4xxx_slave_destroy(struct scsi_device *sdev); | |
024f801f | 90 | static void qla4xxx_scan_start(struct Scsi_Host *shost); |
afaf5a2d | 91 | |
f4f5df23 VC |
92 | static struct qla4_8xxx_legacy_intr_set legacy_intr[] = |
93 | QLA82XX_LEGACY_INTR_CONFIG; | |
94 | ||
afaf5a2d DS |
95 | static struct scsi_host_template qla4xxx_driver_template = { |
96 | .module = THIS_MODULE, | |
97 | .name = DRIVER_NAME, | |
98 | .proc_name = DRIVER_NAME, | |
99 | .queuecommand = qla4xxx_queuecommand, | |
100 | ||
09a0f719 | 101 | .eh_abort_handler = qla4xxx_eh_abort, |
afaf5a2d | 102 | .eh_device_reset_handler = qla4xxx_eh_device_reset, |
ce545039 | 103 | .eh_target_reset_handler = qla4xxx_eh_target_reset, |
afaf5a2d | 104 | .eh_host_reset_handler = qla4xxx_eh_host_reset, |
5c656af7 | 105 | .eh_timed_out = qla4xxx_eh_cmd_timed_out, |
afaf5a2d DS |
106 | |
107 | .slave_configure = qla4xxx_slave_configure, | |
108 | .slave_alloc = qla4xxx_slave_alloc, | |
109 | .slave_destroy = qla4xxx_slave_destroy, | |
110 | ||
921601b7 | 111 | .scan_finished = iscsi_scan_finished, |
024f801f | 112 | .scan_start = qla4xxx_scan_start, |
921601b7 | 113 | |
afaf5a2d DS |
114 | .this_id = -1, |
115 | .cmd_per_lun = 3, | |
116 | .use_clustering = ENABLE_CLUSTERING, | |
117 | .sg_tablesize = SG_ALL, | |
118 | ||
119 | .max_sectors = 0xFFFF, | |
120 | }; | |
121 | ||
122 | static struct iscsi_transport qla4xxx_iscsi_transport = { | |
123 | .owner = THIS_MODULE, | |
124 | .name = DRIVER_NAME, | |
d8196ed2 MC |
125 | .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD | |
126 | CAP_DATA_PATH_OFFLOAD, | |
aa1e93a2 | 127 | .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS | |
3b2bef1f VC |
128 | ISCSI_TARGET_NAME | ISCSI_TPGT | |
129 | ISCSI_TARGET_ALIAS, | |
8ad5781a | 130 | .host_param_mask = ISCSI_HOST_HWADDRESS | |
22236961 | 131 | ISCSI_HOST_IPADDRESS | |
8ad5781a | 132 | ISCSI_HOST_INITIATOR_NAME, |
afaf5a2d DS |
133 | .tgt_dscvr = qla4xxx_tgt_dscvr, |
134 | .get_conn_param = qla4xxx_conn_get_param, | |
135 | .get_session_param = qla4xxx_sess_get_param, | |
aa1e93a2 | 136 | .get_host_param = qla4xxx_host_get_param, |
afaf5a2d DS |
137 | .session_recovery_timedout = qla4xxx_recovery_timedout, |
138 | }; | |
139 | ||
140 | static struct scsi_transport_template *qla4xxx_scsi_transport; | |
141 | ||
5c656af7 MC |
142 | static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc) |
143 | { | |
144 | struct iscsi_cls_session *session; | |
145 | struct ddb_entry *ddb_entry; | |
146 | ||
147 | session = starget_to_session(scsi_target(sc->device)); | |
148 | ddb_entry = session->dd_data; | |
149 | ||
150 | /* if we are not logged in then the LLD is going to clean up the cmd */ | |
151 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
152 | return BLK_EH_RESET_TIMER; | |
153 | else | |
154 | return BLK_EH_NOT_HANDLED; | |
155 | } | |
156 | ||
afaf5a2d DS |
157 | static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session) |
158 | { | |
159 | struct ddb_entry *ddb_entry = session->dd_data; | |
160 | struct scsi_qla_host *ha = ddb_entry->ha; | |
161 | ||
568d303b MC |
162 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
163 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); | |
164 | ||
3013cea8 | 165 | DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout " |
568d303b MC |
166 | "of (%d) secs exhausted, marking device DEAD.\n", |
167 | ha->host_no, __func__, ddb_entry->fw_ddb_index, | |
3013cea8 | 168 | QL4_SESS_RECOVERY_TMO)); |
568d303b | 169 | } |
afaf5a2d DS |
170 | } |
171 | ||
aa1e93a2 MC |
172 | static int qla4xxx_host_get_param(struct Scsi_Host *shost, |
173 | enum iscsi_host_param param, char *buf) | |
174 | { | |
175 | struct scsi_qla_host *ha = to_qla_host(shost); | |
176 | int len; | |
177 | ||
178 | switch (param) { | |
179 | case ISCSI_HOST_PARAM_HWADDRESS: | |
7ffc49a6 | 180 | len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN); |
8ad5781a | 181 | break; |
22236961 MC |
182 | case ISCSI_HOST_PARAM_IPADDRESS: |
183 | len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0], | |
184 | ha->ip_address[1], ha->ip_address[2], | |
185 | ha->ip_address[3]); | |
186 | break; | |
8ad5781a | 187 | case ISCSI_HOST_PARAM_INITIATOR_NAME: |
22236961 | 188 | len = sprintf(buf, "%s\n", ha->name_string); |
aa1e93a2 MC |
189 | break; |
190 | default: | |
191 | return -ENOSYS; | |
192 | } | |
193 | ||
194 | return len; | |
195 | } | |
196 | ||
afaf5a2d DS |
197 | static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess, |
198 | enum iscsi_param param, char *buf) | |
199 | { | |
200 | struct ddb_entry *ddb_entry = sess->dd_data; | |
201 | int len; | |
202 | ||
203 | switch (param) { | |
204 | case ISCSI_PARAM_TARGET_NAME: | |
205 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
206 | ddb_entry->iscsi_name); | |
207 | break; | |
208 | case ISCSI_PARAM_TPGT: | |
209 | len = sprintf(buf, "%u\n", ddb_entry->tpgt); | |
210 | break; | |
3b2bef1f VC |
211 | case ISCSI_PARAM_TARGET_ALIAS: |
212 | len = snprintf(buf, PAGE_SIZE - 1, "%s\n", | |
213 | ddb_entry->iscsi_alias); | |
214 | break; | |
afaf5a2d DS |
215 | default: |
216 | return -ENOSYS; | |
217 | } | |
218 | ||
219 | return len; | |
220 | } | |
221 | ||
222 | static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn, | |
223 | enum iscsi_param param, char *buf) | |
224 | { | |
225 | struct iscsi_cls_session *session; | |
226 | struct ddb_entry *ddb_entry; | |
227 | int len; | |
228 | ||
229 | session = iscsi_dev_to_session(conn->dev.parent); | |
230 | ddb_entry = session->dd_data; | |
231 | ||
232 | switch (param) { | |
233 | case ISCSI_PARAM_CONN_PORT: | |
234 | len = sprintf(buf, "%hu\n", ddb_entry->port); | |
235 | break; | |
236 | case ISCSI_PARAM_CONN_ADDRESS: | |
237 | /* TODO: what are the ipv6 bits */ | |
63779436 | 238 | len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr); |
afaf5a2d DS |
239 | break; |
240 | default: | |
241 | return -ENOSYS; | |
242 | } | |
243 | ||
244 | return len; | |
245 | } | |
246 | ||
2174a04e MC |
247 | static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost, |
248 | enum iscsi_tgt_dscvr type, uint32_t enable, | |
249 | struct sockaddr *dst_addr) | |
afaf5a2d DS |
250 | { |
251 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
252 | struct sockaddr_in *addr; |
253 | struct sockaddr_in6 *addr6; | |
254 | int ret = 0; | |
255 | ||
afaf5a2d DS |
256 | ha = (struct scsi_qla_host *) shost->hostdata; |
257 | ||
258 | switch (type) { | |
259 | case ISCSI_TGT_DSCVR_SEND_TARGETS: | |
260 | if (dst_addr->sa_family == AF_INET) { | |
261 | addr = (struct sockaddr_in *)dst_addr; | |
262 | if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr, | |
263 | addr->sin_port) != QLA_SUCCESS) | |
264 | ret = -EIO; | |
265 | } else if (dst_addr->sa_family == AF_INET6) { | |
266 | /* | |
267 | * TODO: fix qla4xxx_send_tgts | |
268 | */ | |
269 | addr6 = (struct sockaddr_in6 *)dst_addr; | |
270 | if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr, | |
271 | addr6->sin6_port) != QLA_SUCCESS) | |
272 | ret = -EIO; | |
273 | } else | |
274 | ret = -ENOSYS; | |
275 | break; | |
276 | default: | |
277 | ret = -ENOSYS; | |
278 | } | |
afaf5a2d DS |
279 | return ret; |
280 | } | |
281 | ||
282 | void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry) | |
283 | { | |
284 | if (!ddb_entry->sess) | |
285 | return; | |
286 | ||
287 | if (ddb_entry->conn) { | |
26974789 | 288 | atomic_set(&ddb_entry->state, DDB_STATE_DEAD); |
afaf5a2d DS |
289 | iscsi_remove_session(ddb_entry->sess); |
290 | } | |
291 | iscsi_free_session(ddb_entry->sess); | |
292 | } | |
293 | ||
294 | int qla4xxx_add_sess(struct ddb_entry *ddb_entry) | |
295 | { | |
296 | int err; | |
297 | ||
3013cea8 VC |
298 | ddb_entry->sess->recovery_tmo = QL4_SESS_RECOVERY_TMO; |
299 | ||
afaf5a2d DS |
300 | err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index); |
301 | if (err) { | |
302 | DEBUG2(printk(KERN_ERR "Could not add session.\n")); | |
303 | return err; | |
304 | } | |
305 | ||
5d91e209 | 306 | ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0); |
afaf5a2d DS |
307 | if (!ddb_entry->conn) { |
308 | iscsi_remove_session(ddb_entry->sess); | |
309 | DEBUG2(printk(KERN_ERR "Could not add connection.\n")); | |
310 | return -ENOMEM; | |
311 | } | |
b635930d MC |
312 | |
313 | /* finally ready to go */ | |
314 | iscsi_unblock_session(ddb_entry->sess); | |
afaf5a2d DS |
315 | return 0; |
316 | } | |
317 | ||
318 | struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha) | |
319 | { | |
320 | struct ddb_entry *ddb_entry; | |
321 | struct iscsi_cls_session *sess; | |
322 | ||
5d91e209 MC |
323 | sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport, |
324 | sizeof(struct ddb_entry)); | |
afaf5a2d DS |
325 | if (!sess) |
326 | return NULL; | |
327 | ||
328 | ddb_entry = sess->dd_data; | |
329 | memset(ddb_entry, 0, sizeof(*ddb_entry)); | |
330 | ddb_entry->ha = ha; | |
331 | ddb_entry->sess = sess; | |
332 | return ddb_entry; | |
333 | } | |
334 | ||
024f801f MC |
335 | static void qla4xxx_scan_start(struct Scsi_Host *shost) |
336 | { | |
337 | struct scsi_qla_host *ha = shost_priv(shost); | |
338 | struct ddb_entry *ddb_entry, *ddbtemp; | |
339 | ||
340 | /* finish setup of sessions that were already setup in firmware */ | |
341 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
342 | if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) | |
343 | qla4xxx_add_sess(ddb_entry); | |
344 | } | |
345 | } | |
346 | ||
afaf5a2d DS |
347 | /* |
348 | * Timer routines | |
349 | */ | |
350 | ||
351 | static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func, | |
352 | unsigned long interval) | |
353 | { | |
354 | DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n", | |
355 | __func__, ha->host->host_no)); | |
356 | init_timer(&ha->timer); | |
357 | ha->timer.expires = jiffies + interval * HZ; | |
358 | ha->timer.data = (unsigned long)ha; | |
359 | ha->timer.function = (void (*)(unsigned long))func; | |
360 | add_timer(&ha->timer); | |
361 | ha->timer_active = 1; | |
362 | } | |
363 | ||
364 | static void qla4xxx_stop_timer(struct scsi_qla_host *ha) | |
365 | { | |
366 | del_timer_sync(&ha->timer); | |
367 | ha->timer_active = 0; | |
368 | } | |
369 | ||
370 | /*** | |
371 | * qla4xxx_mark_device_missing - mark a device as missing. | |
372 | * @ha: Pointer to host adapter structure. | |
373 | * @ddb_entry: Pointer to device database entry | |
374 | * | |
f4f5df23 | 375 | * This routine marks a device missing and close connection. |
afaf5a2d DS |
376 | **/ |
377 | void qla4xxx_mark_device_missing(struct scsi_qla_host *ha, | |
378 | struct ddb_entry *ddb_entry) | |
379 | { | |
f4f5df23 VC |
380 | if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) { |
381 | atomic_set(&ddb_entry->state, DDB_STATE_MISSING); | |
382 | DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n", | |
383 | ha->host_no, ddb_entry->fw_ddb_index)); | |
384 | } else | |
385 | DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no, | |
386 | ddb_entry->fw_ddb_index)) | |
387 | ||
b635930d | 388 | iscsi_block_session(ddb_entry->sess); |
e5bd7b54 | 389 | iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED); |
afaf5a2d DS |
390 | } |
391 | ||
f4f5df23 VC |
392 | /** |
393 | * qla4xxx_mark_all_devices_missing - mark all devices as missing. | |
394 | * @ha: Pointer to host adapter structure. | |
395 | * | |
396 | * This routine marks a device missing and resets the relogin retry count. | |
397 | **/ | |
398 | void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha) | |
399 | { | |
400 | struct ddb_entry *ddb_entry, *ddbtemp; | |
401 | list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) { | |
402 | qla4xxx_mark_device_missing(ha, ddb_entry); | |
403 | } | |
404 | } | |
405 | ||
afaf5a2d DS |
406 | static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha, |
407 | struct ddb_entry *ddb_entry, | |
408 | struct scsi_cmnd *cmd, | |
409 | void (*done)(struct scsi_cmnd *)) | |
410 | { | |
411 | struct srb *srb; | |
412 | ||
413 | srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC); | |
414 | if (!srb) | |
415 | return srb; | |
416 | ||
09a0f719 | 417 | kref_init(&srb->srb_ref); |
afaf5a2d DS |
418 | srb->ha = ha; |
419 | srb->ddb = ddb_entry; | |
420 | srb->cmd = cmd; | |
421 | srb->flags = 0; | |
5369887a | 422 | CMD_SP(cmd) = (void *)srb; |
afaf5a2d DS |
423 | cmd->scsi_done = done; |
424 | ||
425 | return srb; | |
426 | } | |
427 | ||
428 | static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb) | |
429 | { | |
430 | struct scsi_cmnd *cmd = srb->cmd; | |
431 | ||
432 | if (srb->flags & SRB_DMA_VALID) { | |
5f7186c8 | 433 | scsi_dma_unmap(cmd); |
afaf5a2d DS |
434 | srb->flags &= ~SRB_DMA_VALID; |
435 | } | |
5369887a | 436 | CMD_SP(cmd) = NULL; |
afaf5a2d DS |
437 | } |
438 | ||
09a0f719 | 439 | void qla4xxx_srb_compl(struct kref *ref) |
afaf5a2d | 440 | { |
09a0f719 | 441 | struct srb *srb = container_of(ref, struct srb, srb_ref); |
afaf5a2d | 442 | struct scsi_cmnd *cmd = srb->cmd; |
09a0f719 | 443 | struct scsi_qla_host *ha = srb->ha; |
afaf5a2d DS |
444 | |
445 | qla4xxx_srb_free_dma(ha, srb); | |
446 | ||
447 | mempool_free(srb, ha->srb_mempool); | |
448 | ||
449 | cmd->scsi_done(cmd); | |
450 | } | |
451 | ||
452 | /** | |
453 | * qla4xxx_queuecommand - scsi layer issues scsi command to driver. | |
454 | * @cmd: Pointer to Linux's SCSI command structure | |
455 | * @done_fn: Function that the driver calls to notify the SCSI mid-layer | |
456 | * that the command has been processed. | |
457 | * | |
458 | * Remarks: | |
459 | * This routine is invoked by Linux to send a SCSI command to the driver. | |
460 | * The mid-level driver tries to ensure that queuecommand never gets | |
461 | * invoked concurrently with itself or the interrupt handler (although | |
462 | * the interrupt handler may call this routine as part of request- | |
463 | * completion handling). Unfortunely, it sometimes calls the scheduler | |
464 | * in interrupt context which is a big NO! NO!. | |
465 | **/ | |
f281233d | 466 | static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd, |
afaf5a2d DS |
467 | void (*done)(struct scsi_cmnd *)) |
468 | { | |
469 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
470 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
7fb1921b | 471 | struct iscsi_cls_session *sess = ddb_entry->sess; |
afaf5a2d DS |
472 | struct srb *srb; |
473 | int rval; | |
474 | ||
2232be0d LC |
475 | if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
476 | if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags)) | |
477 | cmd->result = DID_NO_CONNECT << 16; | |
478 | else | |
479 | cmd->result = DID_REQUEUE << 16; | |
480 | goto qc_fail_command; | |
481 | } | |
482 | ||
7fb1921b MC |
483 | if (!sess) { |
484 | cmd->result = DID_IMM_RETRY << 16; | |
485 | goto qc_fail_command; | |
486 | } | |
487 | ||
488 | rval = iscsi_session_chkready(sess); | |
489 | if (rval) { | |
490 | cmd->result = rval; | |
491 | goto qc_fail_command; | |
492 | } | |
493 | ||
afaf5a2d DS |
494 | if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { |
495 | if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) { | |
496 | cmd->result = DID_NO_CONNECT << 16; | |
497 | goto qc_fail_command; | |
498 | } | |
c5e98e91 | 499 | return SCSI_MLQUEUE_TARGET_BUSY; |
afaf5a2d DS |
500 | } |
501 | ||
f4f5df23 VC |
502 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
503 | test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) || | |
504 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
505 | test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || | |
506 | test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || | |
507 | !test_bit(AF_ONLINE, &ha->flags) || | |
508 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) | |
477ffb9d DS |
509 | goto qc_host_busy; |
510 | ||
afaf5a2d DS |
511 | spin_unlock_irq(ha->host->host_lock); |
512 | ||
513 | srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done); | |
514 | if (!srb) | |
515 | goto qc_host_busy_lock; | |
516 | ||
517 | rval = qla4xxx_send_command_to_isp(ha, srb); | |
518 | if (rval != QLA_SUCCESS) | |
519 | goto qc_host_busy_free_sp; | |
520 | ||
521 | spin_lock_irq(ha->host->host_lock); | |
522 | return 0; | |
523 | ||
524 | qc_host_busy_free_sp: | |
525 | qla4xxx_srb_free_dma(ha, srb); | |
526 | mempool_free(srb, ha->srb_mempool); | |
527 | ||
528 | qc_host_busy_lock: | |
529 | spin_lock_irq(ha->host->host_lock); | |
530 | ||
531 | qc_host_busy: | |
532 | return SCSI_MLQUEUE_HOST_BUSY; | |
533 | ||
534 | qc_fail_command: | |
535 | done(cmd); | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
f281233d JG |
540 | static DEF_SCSI_QCMD(qla4xxx_queuecommand) |
541 | ||
afaf5a2d DS |
542 | /** |
543 | * qla4xxx_mem_free - frees memory allocated to adapter | |
544 | * @ha: Pointer to host adapter structure. | |
545 | * | |
546 | * Frees memory previously allocated by qla4xxx_mem_alloc | |
547 | **/ | |
548 | static void qla4xxx_mem_free(struct scsi_qla_host *ha) | |
549 | { | |
550 | if (ha->queues) | |
551 | dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues, | |
552 | ha->queues_dma); | |
553 | ||
554 | ha->queues_len = 0; | |
555 | ha->queues = NULL; | |
556 | ha->queues_dma = 0; | |
557 | ha->request_ring = NULL; | |
558 | ha->request_dma = 0; | |
559 | ha->response_ring = NULL; | |
560 | ha->response_dma = 0; | |
561 | ha->shadow_regs = NULL; | |
562 | ha->shadow_regs_dma = 0; | |
563 | ||
564 | /* Free srb pool. */ | |
565 | if (ha->srb_mempool) | |
566 | mempool_destroy(ha->srb_mempool); | |
567 | ||
568 | ha->srb_mempool = NULL; | |
569 | ||
570 | /* release io space registers */ | |
f4f5df23 VC |
571 | if (is_qla8022(ha)) { |
572 | if (ha->nx_pcibase) | |
573 | iounmap( | |
574 | (struct device_reg_82xx __iomem *)ha->nx_pcibase); | |
f4f5df23 | 575 | } else if (ha->reg) |
afaf5a2d DS |
576 | iounmap(ha->reg); |
577 | pci_release_regions(ha->pdev); | |
578 | } | |
579 | ||
580 | /** | |
581 | * qla4xxx_mem_alloc - allocates memory for use by adapter. | |
582 | * @ha: Pointer to host adapter structure | |
583 | * | |
584 | * Allocates DMA memory for request and response queues. Also allocates memory | |
585 | * for srbs. | |
586 | **/ | |
587 | static int qla4xxx_mem_alloc(struct scsi_qla_host *ha) | |
588 | { | |
589 | unsigned long align; | |
590 | ||
591 | /* Allocate contiguous block of DMA memory for queues. */ | |
592 | ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
593 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) + | |
594 | sizeof(struct shadow_regs) + | |
595 | MEM_ALIGN_VALUE + | |
596 | (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1); | |
597 | ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len, | |
598 | &ha->queues_dma, GFP_KERNEL); | |
599 | if (ha->queues == NULL) { | |
c2660df3 VC |
600 | ql4_printk(KERN_WARNING, ha, |
601 | "Memory Allocation failed - queues.\n"); | |
afaf5a2d DS |
602 | |
603 | goto mem_alloc_error_exit; | |
604 | } | |
605 | memset(ha->queues, 0, ha->queues_len); | |
606 | ||
607 | /* | |
608 | * As per RISC alignment requirements -- the bus-address must be a | |
609 | * multiple of the request-ring size (in bytes). | |
610 | */ | |
611 | align = 0; | |
612 | if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1)) | |
613 | align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma & | |
614 | (MEM_ALIGN_VALUE - 1)); | |
615 | ||
616 | /* Update request and response queue pointers. */ | |
617 | ha->request_dma = ha->queues_dma + align; | |
618 | ha->request_ring = (struct queue_entry *) (ha->queues + align); | |
619 | ha->response_dma = ha->queues_dma + align + | |
620 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE); | |
621 | ha->response_ring = (struct queue_entry *) (ha->queues + align + | |
622 | (REQUEST_QUEUE_DEPTH * | |
623 | QUEUE_SIZE)); | |
624 | ha->shadow_regs_dma = ha->queues_dma + align + | |
625 | (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) + | |
626 | (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE); | |
627 | ha->shadow_regs = (struct shadow_regs *) (ha->queues + align + | |
628 | (REQUEST_QUEUE_DEPTH * | |
629 | QUEUE_SIZE) + | |
630 | (RESPONSE_QUEUE_DEPTH * | |
631 | QUEUE_SIZE)); | |
632 | ||
633 | /* Allocate memory for srb pool. */ | |
634 | ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab, | |
635 | mempool_free_slab, srb_cachep); | |
636 | if (ha->srb_mempool == NULL) { | |
c2660df3 VC |
637 | ql4_printk(KERN_WARNING, ha, |
638 | "Memory Allocation failed - SRB Pool.\n"); | |
afaf5a2d DS |
639 | |
640 | goto mem_alloc_error_exit; | |
641 | } | |
642 | ||
643 | return QLA_SUCCESS; | |
644 | ||
645 | mem_alloc_error_exit: | |
646 | qla4xxx_mem_free(ha); | |
647 | return QLA_ERROR; | |
648 | } | |
649 | ||
f4f5df23 VC |
650 | /** |
651 | * qla4_8xxx_check_fw_alive - Check firmware health | |
652 | * @ha: Pointer to host adapter structure. | |
653 | * | |
654 | * Context: Interrupt | |
655 | **/ | |
656 | static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha) | |
657 | { | |
658 | uint32_t fw_heartbeat_counter, halt_status; | |
659 | ||
660 | fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER); | |
2232be0d LC |
661 | /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */ |
662 | if (fw_heartbeat_counter == 0xffffffff) { | |
663 | DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen " | |
664 | "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n", | |
665 | ha->host_no, __func__)); | |
666 | return; | |
667 | } | |
f4f5df23 VC |
668 | |
669 | if (ha->fw_heartbeat_counter == fw_heartbeat_counter) { | |
670 | ha->seconds_since_last_heartbeat++; | |
671 | /* FW not alive after 2 seconds */ | |
672 | if (ha->seconds_since_last_heartbeat == 2) { | |
673 | ha->seconds_since_last_heartbeat = 0; | |
674 | halt_status = qla4_8xxx_rd_32(ha, | |
675 | QLA82XX_PEG_HALT_STATUS1); | |
21033639 | 676 | |
f4f5df23 VC |
677 | /* Since we cannot change dev_state in interrupt |
678 | * context, set appropriate DPC flag then wakeup | |
679 | * DPC */ | |
680 | if (halt_status & HALT_STATUS_UNRECOVERABLE) | |
681 | set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags); | |
682 | else { | |
683 | printk("scsi%ld: %s: detect abort needed!\n", | |
684 | ha->host_no, __func__); | |
685 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
686 | } | |
687 | qla4xxx_wake_dpc(ha); | |
21033639 | 688 | qla4xxx_mailbox_premature_completion(ha); |
f4f5df23 | 689 | } |
99457d75 LC |
690 | } else |
691 | ha->seconds_since_last_heartbeat = 0; | |
692 | ||
f4f5df23 VC |
693 | ha->fw_heartbeat_counter = fw_heartbeat_counter; |
694 | } | |
695 | ||
696 | /** | |
697 | * qla4_8xxx_watchdog - Poll dev state | |
698 | * @ha: Pointer to host adapter structure. | |
699 | * | |
700 | * Context: Interrupt | |
701 | **/ | |
702 | void qla4_8xxx_watchdog(struct scsi_qla_host *ha) | |
703 | { | |
704 | uint32_t dev_state; | |
705 | ||
706 | dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE); | |
707 | ||
708 | /* don't poll if reset is going on */ | |
709 | if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags)) { | |
710 | if (dev_state == QLA82XX_DEV_NEED_RESET && | |
711 | !test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
712 | printk("scsi%ld: %s: HW State: NEED RESET!\n", | |
713 | ha->host_no, __func__); | |
714 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
715 | qla4xxx_wake_dpc(ha); | |
21033639 | 716 | qla4xxx_mailbox_premature_completion(ha); |
f4f5df23 VC |
717 | } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT && |
718 | !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { | |
719 | printk("scsi%ld: %s: HW State: NEED QUIES!\n", | |
720 | ha->host_no, __func__); | |
721 | set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags); | |
722 | qla4xxx_wake_dpc(ha); | |
723 | } else { | |
724 | /* Check firmware health */ | |
725 | qla4_8xxx_check_fw_alive(ha); | |
726 | } | |
727 | } | |
728 | } | |
729 | ||
afaf5a2d DS |
730 | /** |
731 | * qla4xxx_timer - checks every second for work to do. | |
732 | * @ha: Pointer to host adapter structure. | |
733 | **/ | |
734 | static void qla4xxx_timer(struct scsi_qla_host *ha) | |
735 | { | |
736 | struct ddb_entry *ddb_entry, *dtemp; | |
737 | int start_dpc = 0; | |
2232be0d LC |
738 | uint16_t w; |
739 | ||
740 | /* If we are in the middle of AER/EEH processing | |
741 | * skip any processing and reschedule the timer | |
742 | */ | |
743 | if (test_bit(AF_EEH_BUSY, &ha->flags)) { | |
744 | mod_timer(&ha->timer, jiffies + HZ); | |
745 | return; | |
746 | } | |
747 | ||
748 | /* Hardware read to trigger an EEH error during mailbox waits. */ | |
749 | if (!pci_channel_offline(ha->pdev)) | |
750 | pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w); | |
afaf5a2d | 751 | |
f4f5df23 VC |
752 | if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) { |
753 | DEBUG2(ql4_printk(KERN_INFO, ha, "%s exited. HBA GOING AWAY\n", | |
754 | __func__)); | |
755 | return; | |
756 | } | |
757 | ||
758 | if (is_qla8022(ha)) { | |
759 | qla4_8xxx_watchdog(ha); | |
760 | } | |
761 | ||
afaf5a2d DS |
762 | /* Search for relogin's to time-out and port down retry. */ |
763 | list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) { | |
764 | /* Count down time between sending relogins */ | |
765 | if (adapter_up(ha) && | |
766 | !test_bit(DF_RELOGIN, &ddb_entry->flags) && | |
767 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) { | |
768 | if (atomic_read(&ddb_entry->retry_relogin_timer) != | |
769 | INVALID_ENTRY) { | |
770 | if (atomic_read(&ddb_entry->retry_relogin_timer) | |
771 | == 0) { | |
772 | atomic_set(&ddb_entry-> | |
773 | retry_relogin_timer, | |
774 | INVALID_ENTRY); | |
775 | set_bit(DPC_RELOGIN_DEVICE, | |
776 | &ha->dpc_flags); | |
777 | set_bit(DF_RELOGIN, &ddb_entry->flags); | |
f4f5df23 | 778 | DEBUG2(printk("scsi%ld: %s: ddb [%d]" |
afaf5a2d DS |
779 | " login device\n", |
780 | ha->host_no, __func__, | |
781 | ddb_entry->fw_ddb_index)); | |
782 | } else | |
783 | atomic_dec(&ddb_entry-> | |
784 | retry_relogin_timer); | |
785 | } | |
786 | } | |
787 | ||
788 | /* Wait for relogin to timeout */ | |
789 | if (atomic_read(&ddb_entry->relogin_timer) && | |
790 | (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) { | |
791 | /* | |
792 | * If the relogin times out and the device is | |
793 | * still NOT ONLINE then try and relogin again. | |
794 | */ | |
795 | if (atomic_read(&ddb_entry->state) != | |
796 | DDB_STATE_ONLINE && | |
797 | ddb_entry->fw_ddb_device_state == | |
798 | DDB_DS_SESSION_FAILED) { | |
799 | /* Reset retry relogin timer */ | |
800 | atomic_inc(&ddb_entry->relogin_retry_count); | |
f4f5df23 | 801 | DEBUG2(printk("scsi%ld: ddb [%d] relogin" |
afaf5a2d DS |
802 | " timed out-retrying" |
803 | " relogin (%d)\n", | |
804 | ha->host_no, | |
805 | ddb_entry->fw_ddb_index, | |
806 | atomic_read(&ddb_entry-> | |
807 | relogin_retry_count)) | |
808 | ); | |
809 | start_dpc++; | |
f4f5df23 | 810 | DEBUG(printk("scsi%ld:%d:%d: ddb [%d] " |
afaf5a2d DS |
811 | "initate relogin after" |
812 | " %d seconds\n", | |
813 | ha->host_no, ddb_entry->bus, | |
814 | ddb_entry->target, | |
815 | ddb_entry->fw_ddb_index, | |
816 | ddb_entry->default_time2wait + 4) | |
817 | ); | |
818 | ||
819 | atomic_set(&ddb_entry->retry_relogin_timer, | |
820 | ddb_entry->default_time2wait + 4); | |
821 | } | |
822 | } | |
823 | } | |
824 | ||
f4f5df23 VC |
825 | if (!is_qla8022(ha)) { |
826 | /* Check for heartbeat interval. */ | |
827 | if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE && | |
828 | ha->heartbeat_interval != 0) { | |
829 | ha->seconds_since_last_heartbeat++; | |
830 | if (ha->seconds_since_last_heartbeat > | |
831 | ha->heartbeat_interval + 2) | |
832 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
833 | } | |
afaf5a2d DS |
834 | } |
835 | ||
afaf5a2d DS |
836 | /* Wakeup the dpc routine for this adapter, if needed. */ |
837 | if ((start_dpc || | |
838 | test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
839 | test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) || | |
840 | test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) || | |
f4f5df23 | 841 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || |
afaf5a2d DS |
842 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
843 | test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) || | |
065aa1b4 | 844 | test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) || |
f4f5df23 VC |
845 | test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) || |
846 | test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) || | |
afaf5a2d | 847 | test_bit(DPC_AEN, &ha->dpc_flags)) && |
f4f5df23 | 848 | !test_bit(AF_DPC_SCHEDULED, &ha->flags) && |
afaf5a2d DS |
849 | ha->dpc_thread) { |
850 | DEBUG2(printk("scsi%ld: %s: scheduling dpc routine" | |
851 | " - dpc flags = 0x%lx\n", | |
852 | ha->host_no, __func__, ha->dpc_flags)); | |
f4f5df23 | 853 | qla4xxx_wake_dpc(ha); |
afaf5a2d DS |
854 | } |
855 | ||
856 | /* Reschedule timer thread to call us back in one second */ | |
857 | mod_timer(&ha->timer, jiffies + HZ); | |
858 | ||
859 | DEBUG2(ha->seconds_since_last_intr++); | |
860 | } | |
861 | ||
862 | /** | |
863 | * qla4xxx_cmd_wait - waits for all outstanding commands to complete | |
864 | * @ha: Pointer to host adapter structure. | |
865 | * | |
866 | * This routine stalls the driver until all outstanding commands are returned. | |
867 | * Caller must release the Hardware Lock prior to calling this routine. | |
868 | **/ | |
869 | static int qla4xxx_cmd_wait(struct scsi_qla_host *ha) | |
870 | { | |
871 | uint32_t index = 0; | |
afaf5a2d DS |
872 | unsigned long flags; |
873 | struct scsi_cmnd *cmd; | |
afaf5a2d | 874 | |
f4f5df23 VC |
875 | unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ); |
876 | ||
877 | DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to " | |
878 | "complete\n", WAIT_CMD_TOV)); | |
879 | ||
880 | while (!time_after_eq(jiffies, wtime)) { | |
afaf5a2d DS |
881 | spin_lock_irqsave(&ha->hardware_lock, flags); |
882 | /* Find a command that hasn't completed. */ | |
883 | for (index = 0; index < ha->host->can_queue; index++) { | |
884 | cmd = scsi_host_find_tag(ha->host, index); | |
a1e0063d MC |
885 | /* |
886 | * We cannot just check if the index is valid, | |
887 | * becase if we are run from the scsi eh, then | |
888 | * the scsi/block layer is going to prevent | |
889 | * the tag from being released. | |
890 | */ | |
891 | if (cmd != NULL && CMD_SP(cmd)) | |
afaf5a2d DS |
892 | break; |
893 | } | |
894 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
895 | ||
896 | /* If No Commands are pending, wait is complete */ | |
f4f5df23 VC |
897 | if (index == ha->host->can_queue) |
898 | return QLA_SUCCESS; | |
afaf5a2d | 899 | |
f4f5df23 VC |
900 | msleep(1000); |
901 | } | |
902 | /* If we timed out on waiting for commands to come back | |
903 | * return ERROR. */ | |
904 | return QLA_ERROR; | |
afaf5a2d DS |
905 | } |
906 | ||
f4f5df23 | 907 | int qla4xxx_hw_reset(struct scsi_qla_host *ha) |
afaf5a2d | 908 | { |
afaf5a2d | 909 | uint32_t ctrl_status; |
477ffb9d DS |
910 | unsigned long flags = 0; |
911 | ||
912 | DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__)); | |
afaf5a2d | 913 | |
f4f5df23 VC |
914 | if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS) |
915 | return QLA_ERROR; | |
916 | ||
afaf5a2d DS |
917 | spin_lock_irqsave(&ha->hardware_lock, flags); |
918 | ||
919 | /* | |
920 | * If the SCSI Reset Interrupt bit is set, clear it. | |
921 | * Otherwise, the Soft Reset won't work. | |
922 | */ | |
923 | ctrl_status = readw(&ha->reg->ctrl_status); | |
924 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) | |
925 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
926 | ||
927 | /* Issue Soft Reset */ | |
928 | writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status); | |
929 | readl(&ha->reg->ctrl_status); | |
930 | ||
931 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
f4f5df23 | 932 | return QLA_SUCCESS; |
477ffb9d DS |
933 | } |
934 | ||
935 | /** | |
936 | * qla4xxx_soft_reset - performs soft reset. | |
937 | * @ha: Pointer to host adapter structure. | |
938 | **/ | |
939 | int qla4xxx_soft_reset(struct scsi_qla_host *ha) | |
940 | { | |
941 | uint32_t max_wait_time; | |
942 | unsigned long flags = 0; | |
f931c534 | 943 | int status; |
477ffb9d DS |
944 | uint32_t ctrl_status; |
945 | ||
f931c534 VC |
946 | status = qla4xxx_hw_reset(ha); |
947 | if (status != QLA_SUCCESS) | |
948 | return status; | |
afaf5a2d | 949 | |
f931c534 | 950 | status = QLA_ERROR; |
afaf5a2d DS |
951 | /* Wait until the Network Reset Intr bit is cleared */ |
952 | max_wait_time = RESET_INTR_TOV; | |
953 | do { | |
954 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
955 | ctrl_status = readw(&ha->reg->ctrl_status); | |
956 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
957 | ||
958 | if ((ctrl_status & CSR_NET_RESET_INTR) == 0) | |
959 | break; | |
960 | ||
961 | msleep(1000); | |
962 | } while ((--max_wait_time)); | |
963 | ||
964 | if ((ctrl_status & CSR_NET_RESET_INTR) != 0) { | |
965 | DEBUG2(printk(KERN_WARNING | |
966 | "scsi%ld: Network Reset Intr not cleared by " | |
967 | "Network function, clearing it now!\n", | |
968 | ha->host_no)); | |
969 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
970 | writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status); | |
971 | readl(&ha->reg->ctrl_status); | |
972 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
973 | } | |
974 | ||
975 | /* Wait until the firmware tells us the Soft Reset is done */ | |
976 | max_wait_time = SOFT_RESET_TOV; | |
977 | do { | |
978 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
979 | ctrl_status = readw(&ha->reg->ctrl_status); | |
980 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
981 | ||
982 | if ((ctrl_status & CSR_SOFT_RESET) == 0) { | |
983 | status = QLA_SUCCESS; | |
984 | break; | |
985 | } | |
986 | ||
987 | msleep(1000); | |
988 | } while ((--max_wait_time)); | |
989 | ||
990 | /* | |
991 | * Also, make sure that the SCSI Reset Interrupt bit has been cleared | |
992 | * after the soft reset has taken place. | |
993 | */ | |
994 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
995 | ctrl_status = readw(&ha->reg->ctrl_status); | |
996 | if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) { | |
997 | writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status); | |
998 | readl(&ha->reg->ctrl_status); | |
999 | } | |
1000 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1001 | ||
1002 | /* If soft reset fails then most probably the bios on other | |
1003 | * function is also enabled. | |
1004 | * Since the initialization is sequential the other fn | |
1005 | * wont be able to acknowledge the soft reset. | |
1006 | * Issue a force soft reset to workaround this scenario. | |
1007 | */ | |
1008 | if (max_wait_time == 0) { | |
1009 | /* Issue Force Soft Reset */ | |
1010 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1011 | writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status); | |
1012 | readl(&ha->reg->ctrl_status); | |
1013 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1014 | /* Wait until the firmware tells us the Soft Reset is done */ | |
1015 | max_wait_time = SOFT_RESET_TOV; | |
1016 | do { | |
1017 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1018 | ctrl_status = readw(&ha->reg->ctrl_status); | |
1019 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1020 | ||
1021 | if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) { | |
1022 | status = QLA_SUCCESS; | |
1023 | break; | |
1024 | } | |
1025 | ||
1026 | msleep(1000); | |
1027 | } while ((--max_wait_time)); | |
1028 | } | |
1029 | ||
1030 | return status; | |
1031 | } | |
1032 | ||
afaf5a2d | 1033 | /** |
f4f5df23 | 1034 | * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S. |
afaf5a2d | 1035 | * @ha: Pointer to host adapter structure. |
f4f5df23 | 1036 | * @res: returned scsi status |
afaf5a2d DS |
1037 | * |
1038 | * This routine is called just prior to a HARD RESET to return all | |
1039 | * outstanding commands back to the Operating System. | |
1040 | * Caller should make sure that the following locks are released | |
1041 | * before this calling routine: Hardware lock, and io_request_lock. | |
1042 | **/ | |
f4f5df23 | 1043 | static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res) |
afaf5a2d DS |
1044 | { |
1045 | struct srb *srb; | |
1046 | int i; | |
1047 | unsigned long flags; | |
1048 | ||
1049 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1050 | for (i = 0; i < ha->host->can_queue; i++) { | |
1051 | srb = qla4xxx_del_from_active_array(ha, i); | |
1052 | if (srb != NULL) { | |
f4f5df23 | 1053 | srb->cmd->result = res; |
09a0f719 | 1054 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); |
afaf5a2d DS |
1055 | } |
1056 | } | |
1057 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
afaf5a2d DS |
1058 | } |
1059 | ||
f4f5df23 VC |
1060 | void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha) |
1061 | { | |
1062 | clear_bit(AF_ONLINE, &ha->flags); | |
1063 | ||
1064 | /* Disable the board */ | |
1065 | ql4_printk(KERN_INFO, ha, "Disabling the board\n"); | |
1066 | set_bit(AF_HBA_GOING_AWAY, &ha->flags); | |
1067 | ||
1068 | qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); | |
1069 | qla4xxx_mark_all_devices_missing(ha); | |
1070 | clear_bit(AF_INIT_DONE, &ha->flags); | |
1071 | } | |
1072 | ||
afaf5a2d DS |
1073 | /** |
1074 | * qla4xxx_recover_adapter - recovers adapter after a fatal error | |
1075 | * @ha: Pointer to host adapter structure. | |
afaf5a2d | 1076 | **/ |
f4f5df23 | 1077 | static int qla4xxx_recover_adapter(struct scsi_qla_host *ha) |
afaf5a2d | 1078 | { |
f4f5df23 VC |
1079 | int status = QLA_ERROR; |
1080 | uint8_t reset_chip = 0; | |
afaf5a2d DS |
1081 | |
1082 | /* Stall incoming I/O until we are done */ | |
f4f5df23 | 1083 | scsi_block_requests(ha->host); |
afaf5a2d | 1084 | clear_bit(AF_ONLINE, &ha->flags); |
50a29aec | 1085 | |
f4f5df23 | 1086 | DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__)); |
afaf5a2d | 1087 | |
f4f5df23 | 1088 | set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); |
afaf5a2d | 1089 | |
f4f5df23 VC |
1090 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) |
1091 | reset_chip = 1; | |
afaf5a2d | 1092 | |
f4f5df23 VC |
1093 | /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific) |
1094 | * do not reset adapter, jump to initialize_adapter */ | |
1095 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { | |
1096 | status = QLA_SUCCESS; | |
1097 | goto recover_ha_init_adapter; | |
1098 | } | |
afaf5a2d | 1099 | |
f4f5df23 VC |
1100 | /* For the ISP-82xx adapter, issue a stop_firmware if invoked |
1101 | * from eh_host_reset or ioctl module */ | |
1102 | if (is_qla8022(ha) && !reset_chip && | |
1103 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) { | |
1104 | ||
1105 | DEBUG2(ql4_printk(KERN_INFO, ha, | |
1106 | "scsi%ld: %s - Performing stop_firmware...\n", | |
1107 | ha->host_no, __func__)); | |
1108 | status = ha->isp_ops->reset_firmware(ha); | |
1109 | if (status == QLA_SUCCESS) { | |
2bd1e2be NJ |
1110 | if (!test_bit(AF_FW_RECOVERY, &ha->flags)) |
1111 | qla4xxx_cmd_wait(ha); | |
f4f5df23 VC |
1112 | ha->isp_ops->disable_intrs(ha); |
1113 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1114 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); | |
1115 | } else { | |
1116 | /* If the stop_firmware fails then | |
1117 | * reset the entire chip */ | |
1118 | reset_chip = 1; | |
1119 | clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); | |
1120 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
1121 | } | |
1122 | } | |
dca05c4c | 1123 | |
f4f5df23 VC |
1124 | /* Issue full chip reset if recovering from a catastrophic error, |
1125 | * or if stop_firmware fails for ISP-82xx. | |
1126 | * This is the default case for ISP-4xxx */ | |
1127 | if (!is_qla8022(ha) || reset_chip) { | |
2bd1e2be NJ |
1128 | if (!test_bit(AF_FW_RECOVERY, &ha->flags)) |
1129 | qla4xxx_cmd_wait(ha); | |
f4f5df23 VC |
1130 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); |
1131 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); | |
1132 | DEBUG2(ql4_printk(KERN_INFO, ha, | |
1133 | "scsi%ld: %s - Performing chip reset..\n", | |
1134 | ha->host_no, __func__)); | |
1135 | status = ha->isp_ops->reset_chip(ha); | |
1136 | } | |
afaf5a2d DS |
1137 | |
1138 | /* Flush any pending ddb changed AENs */ | |
1139 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
1140 | ||
f4f5df23 VC |
1141 | recover_ha_init_adapter: |
1142 | /* Upon successful firmware/chip reset, re-initialize the adapter */ | |
afaf5a2d | 1143 | if (status == QLA_SUCCESS) { |
f4f5df23 VC |
1144 | /* For ISP-4xxx, force function 1 to always initialize |
1145 | * before function 3 to prevent both funcions from | |
1146 | * stepping on top of the other */ | |
1147 | if (!is_qla8022(ha) && (ha->mac_index == 3)) | |
1148 | ssleep(6); | |
1149 | ||
1150 | /* NOTE: AF_ONLINE flag set upon successful completion of | |
1151 | * qla4xxx_initialize_adapter */ | |
1152 | status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); | |
afaf5a2d DS |
1153 | } |
1154 | ||
f4f5df23 VC |
1155 | /* Retry failed adapter initialization, if necessary |
1156 | * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific) | |
1157 | * case to prevent ping-pong resets between functions */ | |
1158 | if (!test_bit(AF_ONLINE, &ha->flags) && | |
1159 | !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { | |
afaf5a2d | 1160 | /* Adapter initialization failed, see if we can retry |
f4f5df23 VC |
1161 | * resetting the ha. |
1162 | * Since we don't want to block the DPC for too long | |
1163 | * with multiple resets in the same thread, | |
1164 | * utilize DPC to retry */ | |
afaf5a2d DS |
1165 | if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) { |
1166 | ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES; | |
1167 | DEBUG2(printk("scsi%ld: recover adapter - retrying " | |
1168 | "(%d) more times\n", ha->host_no, | |
1169 | ha->retry_reset_ha_cnt)); | |
1170 | set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); | |
1171 | status = QLA_ERROR; | |
1172 | } else { | |
1173 | if (ha->retry_reset_ha_cnt > 0) { | |
1174 | /* Schedule another Reset HA--DPC will retry */ | |
1175 | ha->retry_reset_ha_cnt--; | |
1176 | DEBUG2(printk("scsi%ld: recover adapter - " | |
1177 | "retry remaining %d\n", | |
1178 | ha->host_no, | |
1179 | ha->retry_reset_ha_cnt)); | |
1180 | status = QLA_ERROR; | |
1181 | } | |
1182 | ||
1183 | if (ha->retry_reset_ha_cnt == 0) { | |
1184 | /* Recover adapter retries have been exhausted. | |
1185 | * Adapter DEAD */ | |
1186 | DEBUG2(printk("scsi%ld: recover adapter " | |
1187 | "failed - board disabled\n", | |
1188 | ha->host_no)); | |
f4f5df23 | 1189 | qla4xxx_dead_adapter_cleanup(ha); |
afaf5a2d DS |
1190 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
1191 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
f4f5df23 | 1192 | clear_bit(DPC_RESET_HA_FW_CONTEXT, |
afaf5a2d DS |
1193 | &ha->dpc_flags); |
1194 | status = QLA_ERROR; | |
1195 | } | |
1196 | } | |
1197 | } else { | |
1198 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
f4f5df23 | 1199 | clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); |
afaf5a2d DS |
1200 | clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags); |
1201 | } | |
1202 | ||
1203 | ha->adapter_error_count++; | |
1204 | ||
f4f5df23 VC |
1205 | if (test_bit(AF_ONLINE, &ha->flags)) |
1206 | ha->isp_ops->enable_intrs(ha); | |
1207 | ||
1208 | scsi_unblock_requests(ha->host); | |
1209 | ||
1210 | clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); | |
1211 | DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no, | |
1212 | status == QLA_ERROR ? "FAILED" : "SUCCEDED")); | |
afaf5a2d | 1213 | |
afaf5a2d DS |
1214 | return status; |
1215 | } | |
1216 | ||
f4f5df23 VC |
1217 | void qla4xxx_wake_dpc(struct scsi_qla_host *ha) |
1218 | { | |
1219 | if (ha->dpc_thread && | |
1220 | !test_bit(AF_DPC_SCHEDULED, &ha->flags)) { | |
1221 | set_bit(AF_DPC_SCHEDULED, &ha->flags); | |
1222 | queue_work(ha->dpc_thread, &ha->dpc_work); | |
1223 | } | |
1224 | } | |
1225 | ||
afaf5a2d DS |
1226 | /** |
1227 | * qla4xxx_do_dpc - dpc routine | |
1228 | * @data: in our case pointer to adapter structure | |
1229 | * | |
1230 | * This routine is a task that is schedule by the interrupt handler | |
1231 | * to perform the background processing for interrupts. We put it | |
1232 | * on a task queue that is consumed whenever the scheduler runs; that's | |
1233 | * so you can do anything (i.e. put the process to sleep etc). In fact, | |
1234 | * the mid-level tries to sleep when it reaches the driver threshold | |
1235 | * "host->can_queue". This can cause a panic if we were in our interrupt code. | |
1236 | **/ | |
c4028958 | 1237 | static void qla4xxx_do_dpc(struct work_struct *work) |
afaf5a2d | 1238 | { |
c4028958 DH |
1239 | struct scsi_qla_host *ha = |
1240 | container_of(work, struct scsi_qla_host, dpc_work); | |
afaf5a2d | 1241 | struct ddb_entry *ddb_entry, *dtemp; |
477ffb9d | 1242 | int status = QLA_ERROR; |
afaf5a2d | 1243 | |
f26b9044 | 1244 | DEBUG2(printk("scsi%ld: %s: DPC handler waking up." |
f4f5df23 VC |
1245 | "flags = 0x%08lx, dpc_flags = 0x%08lx\n", |
1246 | ha->host_no, __func__, ha->flags, ha->dpc_flags)) | |
afaf5a2d DS |
1247 | |
1248 | /* Initialization not yet finished. Don't do anything yet. */ | |
1249 | if (!test_bit(AF_INIT_DONE, &ha->flags)) | |
0753b487 | 1250 | goto do_dpc_exit; |
afaf5a2d | 1251 | |
2232be0d LC |
1252 | if (test_bit(AF_EEH_BUSY, &ha->flags)) { |
1253 | DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n", | |
1254 | ha->host_no, __func__, ha->flags)); | |
1255 | goto do_dpc_exit; | |
1256 | } | |
1257 | ||
f4f5df23 VC |
1258 | /* HBA is in the process of being permanently disabled. |
1259 | * Don't process anything */ | |
1260 | if (test_bit(AF_HBA_GOING_AWAY, &ha->flags)) | |
1261 | return; | |
1262 | ||
1263 | if (is_qla8022(ha)) { | |
1264 | if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) { | |
1265 | qla4_8xxx_idc_lock(ha); | |
1266 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
1267 | QLA82XX_DEV_FAILED); | |
1268 | qla4_8xxx_idc_unlock(ha); | |
1269 | ql4_printk(KERN_INFO, ha, "HW State: FAILED\n"); | |
1270 | qla4_8xxx_device_state_handler(ha); | |
1271 | } | |
1272 | if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) { | |
1273 | qla4_8xxx_need_qsnt_handler(ha); | |
1274 | } | |
1275 | } | |
1276 | ||
1277 | if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) && | |
1278 | (test_bit(DPC_RESET_HA, &ha->dpc_flags) || | |
afaf5a2d | 1279 | test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) || |
f4f5df23 VC |
1280 | test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) { |
1281 | if (ql4xdontresethba) { | |
1282 | DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", | |
1283 | ha->host_no, __func__)); | |
1284 | clear_bit(DPC_RESET_HA, &ha->dpc_flags); | |
1285 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1286 | clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); | |
1287 | goto dpc_post_reset_ha; | |
1288 | } | |
1289 | if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) || | |
1290 | test_bit(DPC_RESET_HA, &ha->dpc_flags)) | |
1291 | qla4xxx_recover_adapter(ha); | |
afaf5a2d | 1292 | |
477ffb9d | 1293 | if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) { |
afaf5a2d | 1294 | uint8_t wait_time = RESET_INTR_TOV; |
afaf5a2d | 1295 | |
afaf5a2d DS |
1296 | while ((readw(&ha->reg->ctrl_status) & |
1297 | (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) { | |
1298 | if (--wait_time == 0) | |
1299 | break; | |
afaf5a2d | 1300 | msleep(1000); |
afaf5a2d | 1301 | } |
afaf5a2d DS |
1302 | if (wait_time == 0) |
1303 | DEBUG2(printk("scsi%ld: %s: SR|FSR " | |
1304 | "bit not cleared-- resetting\n", | |
1305 | ha->host_no, __func__)); | |
f4f5df23 | 1306 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); |
477ffb9d DS |
1307 | if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) { |
1308 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
f4f5df23 | 1309 | status = qla4xxx_recover_adapter(ha); |
477ffb9d DS |
1310 | } |
1311 | clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
1312 | if (status == QLA_SUCCESS) | |
f4f5df23 | 1313 | ha->isp_ops->enable_intrs(ha); |
afaf5a2d DS |
1314 | } |
1315 | } | |
1316 | ||
f4f5df23 | 1317 | dpc_post_reset_ha: |
afaf5a2d DS |
1318 | /* ---- process AEN? --- */ |
1319 | if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) | |
1320 | qla4xxx_process_aen(ha, PROCESS_ALL_AENS); | |
1321 | ||
1322 | /* ---- Get DHCP IP Address? --- */ | |
1323 | if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags)) | |
1324 | qla4xxx_get_dhcp_ip_address(ha); | |
1325 | ||
065aa1b4 VC |
1326 | /* ---- link change? --- */ |
1327 | if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) { | |
1328 | if (!test_bit(AF_LINK_UP, &ha->flags)) { | |
1329 | /* ---- link down? --- */ | |
1330 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1331 | &ha->ddb_list, list) { | |
1332 | if (atomic_read(&ddb_entry->state) == | |
1333 | DDB_STATE_ONLINE) | |
1334 | qla4xxx_mark_device_missing(ha, | |
1335 | ddb_entry); | |
1336 | } | |
1337 | } else { | |
1338 | /* ---- link up? --- * | |
1339 | * F/W will auto login to all devices ONLY ONCE after | |
1340 | * link up during driver initialization and runtime | |
1341 | * fatal error recovery. Therefore, the driver must | |
1342 | * manually relogin to devices when recovering from | |
1343 | * connection failures, logouts, expired KATO, etc. */ | |
1344 | ||
1345 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1346 | &ha->ddb_list, list) { | |
1347 | if ((atomic_read(&ddb_entry->state) == | |
1348 | DDB_STATE_MISSING) || | |
1349 | (atomic_read(&ddb_entry->state) == | |
1350 | DDB_STATE_DEAD)) { | |
1351 | if (ddb_entry->fw_ddb_device_state == | |
1352 | DDB_DS_SESSION_ACTIVE) { | |
1353 | atomic_set(&ddb_entry->state, | |
1354 | DDB_STATE_ONLINE); | |
c2660df3 | 1355 | ql4_printk(KERN_INFO, ha, |
065aa1b4 | 1356 | "scsi%ld: %s: ddb[%d]" |
f4f5df23 | 1357 | " marked ONLINE\n", |
065aa1b4 | 1358 | ha->host_no, __func__, |
f4f5df23 | 1359 | ddb_entry->fw_ddb_index); |
065aa1b4 VC |
1360 | |
1361 | iscsi_unblock_session( | |
1362 | ddb_entry->sess); | |
1363 | } else | |
1364 | qla4xxx_relogin_device( | |
1365 | ha, ddb_entry); | |
1366 | } | |
1367 | ||
1368 | } | |
1369 | } | |
1370 | } | |
1371 | ||
afaf5a2d DS |
1372 | /* ---- relogin device? --- */ |
1373 | if (adapter_up(ha) && | |
1374 | test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) { | |
1375 | list_for_each_entry_safe(ddb_entry, dtemp, | |
1376 | &ha->ddb_list, list) { | |
1377 | if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) && | |
1378 | atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) | |
1379 | qla4xxx_relogin_device(ha, ddb_entry); | |
1380 | ||
1381 | /* | |
1382 | * If mbx cmd times out there is no point | |
1383 | * in continuing further. | |
1384 | * With large no of targets this can hang | |
1385 | * the system. | |
1386 | */ | |
1387 | if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) { | |
1388 | printk(KERN_WARNING "scsi%ld: %s: " | |
1389 | "need to reset hba\n", | |
1390 | ha->host_no, __func__); | |
1391 | break; | |
1392 | } | |
1393 | } | |
1394 | } | |
0753b487 VC |
1395 | |
1396 | do_dpc_exit: | |
f4f5df23 | 1397 | clear_bit(AF_DPC_SCHEDULED, &ha->flags); |
afaf5a2d DS |
1398 | } |
1399 | ||
1400 | /** | |
1401 | * qla4xxx_free_adapter - release the adapter | |
1402 | * @ha: pointer to adapter structure | |
1403 | **/ | |
1404 | static void qla4xxx_free_adapter(struct scsi_qla_host *ha) | |
1405 | { | |
1406 | ||
1407 | if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) { | |
1408 | /* Turn-off interrupts on the card. */ | |
f4f5df23 | 1409 | ha->isp_ops->disable_intrs(ha); |
afaf5a2d DS |
1410 | } |
1411 | ||
f4f5df23 VC |
1412 | /* Remove timer thread, if present */ |
1413 | if (ha->timer_active) | |
1414 | qla4xxx_stop_timer(ha); | |
1415 | ||
afaf5a2d DS |
1416 | /* Kill the kernel thread for this host */ |
1417 | if (ha->dpc_thread) | |
1418 | destroy_workqueue(ha->dpc_thread); | |
1419 | ||
f4f5df23 VC |
1420 | /* Put firmware in known state */ |
1421 | ha->isp_ops->reset_firmware(ha); | |
afaf5a2d | 1422 | |
f4f5df23 VC |
1423 | if (is_qla8022(ha)) { |
1424 | qla4_8xxx_idc_lock(ha); | |
1425 | qla4_8xxx_clear_drv_active(ha); | |
1426 | qla4_8xxx_idc_unlock(ha); | |
1427 | } | |
afaf5a2d | 1428 | |
afaf5a2d DS |
1429 | /* Detach interrupts */ |
1430 | if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags)) | |
f4f5df23 | 1431 | qla4xxx_free_irqs(ha); |
afaf5a2d | 1432 | |
bee4fe8e DS |
1433 | /* free extra memory */ |
1434 | qla4xxx_mem_free(ha); | |
f4f5df23 VC |
1435 | } |
1436 | ||
1437 | int qla4_8xxx_iospace_config(struct scsi_qla_host *ha) | |
1438 | { | |
1439 | int status = 0; | |
1440 | uint8_t revision_id; | |
1441 | unsigned long mem_base, mem_len, db_base, db_len; | |
1442 | struct pci_dev *pdev = ha->pdev; | |
1443 | ||
1444 | status = pci_request_regions(pdev, DRIVER_NAME); | |
1445 | if (status) { | |
1446 | printk(KERN_WARNING | |
1447 | "scsi(%ld) Failed to reserve PIO regions (%s) " | |
1448 | "status=%d\n", ha->host_no, pci_name(pdev), status); | |
1449 | goto iospace_error_exit; | |
1450 | } | |
1451 | ||
1452 | pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id); | |
1453 | DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n", | |
1454 | __func__, revision_id)); | |
1455 | ha->revision_id = revision_id; | |
bee4fe8e | 1456 | |
f4f5df23 VC |
1457 | /* remap phys address */ |
1458 | mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */ | |
1459 | mem_len = pci_resource_len(pdev, 0); | |
1460 | DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n", | |
1461 | __func__, mem_base, mem_len)); | |
afaf5a2d | 1462 | |
f4f5df23 VC |
1463 | /* mapping of pcibase pointer */ |
1464 | ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len); | |
1465 | if (!ha->nx_pcibase) { | |
1466 | printk(KERN_ERR | |
1467 | "cannot remap MMIO (%s), aborting\n", pci_name(pdev)); | |
1468 | pci_release_regions(ha->pdev); | |
1469 | goto iospace_error_exit; | |
1470 | } | |
1471 | ||
1472 | /* Mapping of IO base pointer, door bell read and write pointer */ | |
1473 | ||
1474 | /* mapping of IO base pointer */ | |
1475 | ha->qla4_8xxx_reg = | |
1476 | (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase + | |
1477 | 0xbc000 + (ha->pdev->devfn << 11)); | |
1478 | ||
1479 | db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */ | |
1480 | db_len = pci_resource_len(pdev, 4); | |
1481 | ||
2657c800 SS |
1482 | ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 : |
1483 | QLA82XX_CAM_RAM_DB2); | |
f4f5df23 | 1484 | |
2657c800 | 1485 | return 0; |
f4f5df23 VC |
1486 | iospace_error_exit: |
1487 | return -ENOMEM; | |
afaf5a2d DS |
1488 | } |
1489 | ||
1490 | /*** | |
1491 | * qla4xxx_iospace_config - maps registers | |
1492 | * @ha: pointer to adapter structure | |
1493 | * | |
1494 | * This routines maps HBA's registers from the pci address space | |
1495 | * into the kernel virtual address space for memory mapped i/o. | |
1496 | **/ | |
f4f5df23 | 1497 | int qla4xxx_iospace_config(struct scsi_qla_host *ha) |
afaf5a2d DS |
1498 | { |
1499 | unsigned long pio, pio_len, pio_flags; | |
1500 | unsigned long mmio, mmio_len, mmio_flags; | |
1501 | ||
1502 | pio = pci_resource_start(ha->pdev, 0); | |
1503 | pio_len = pci_resource_len(ha->pdev, 0); | |
1504 | pio_flags = pci_resource_flags(ha->pdev, 0); | |
1505 | if (pio_flags & IORESOURCE_IO) { | |
1506 | if (pio_len < MIN_IOBASE_LEN) { | |
c2660df3 | 1507 | ql4_printk(KERN_WARNING, ha, |
afaf5a2d DS |
1508 | "Invalid PCI I/O region size\n"); |
1509 | pio = 0; | |
1510 | } | |
1511 | } else { | |
c2660df3 | 1512 | ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n"); |
afaf5a2d DS |
1513 | pio = 0; |
1514 | } | |
1515 | ||
1516 | /* Use MMIO operations for all accesses. */ | |
1517 | mmio = pci_resource_start(ha->pdev, 1); | |
1518 | mmio_len = pci_resource_len(ha->pdev, 1); | |
1519 | mmio_flags = pci_resource_flags(ha->pdev, 1); | |
1520 | ||
1521 | if (!(mmio_flags & IORESOURCE_MEM)) { | |
c2660df3 VC |
1522 | ql4_printk(KERN_ERR, ha, |
1523 | "region #0 not an MMIO resource, aborting\n"); | |
afaf5a2d DS |
1524 | |
1525 | goto iospace_error_exit; | |
1526 | } | |
c2660df3 | 1527 | |
afaf5a2d | 1528 | if (mmio_len < MIN_IOBASE_LEN) { |
c2660df3 VC |
1529 | ql4_printk(KERN_ERR, ha, |
1530 | "Invalid PCI mem region size, aborting\n"); | |
afaf5a2d DS |
1531 | goto iospace_error_exit; |
1532 | } | |
1533 | ||
1534 | if (pci_request_regions(ha->pdev, DRIVER_NAME)) { | |
c2660df3 VC |
1535 | ql4_printk(KERN_WARNING, ha, |
1536 | "Failed to reserve PIO/MMIO regions\n"); | |
afaf5a2d DS |
1537 | |
1538 | goto iospace_error_exit; | |
1539 | } | |
1540 | ||
1541 | ha->pio_address = pio; | |
1542 | ha->pio_length = pio_len; | |
1543 | ha->reg = ioremap(mmio, MIN_IOBASE_LEN); | |
1544 | if (!ha->reg) { | |
c2660df3 VC |
1545 | ql4_printk(KERN_ERR, ha, |
1546 | "cannot remap MMIO, aborting\n"); | |
afaf5a2d DS |
1547 | |
1548 | goto iospace_error_exit; | |
1549 | } | |
1550 | ||
1551 | return 0; | |
1552 | ||
1553 | iospace_error_exit: | |
1554 | return -ENOMEM; | |
1555 | } | |
1556 | ||
f4f5df23 VC |
1557 | static struct isp_operations qla4xxx_isp_ops = { |
1558 | .iospace_config = qla4xxx_iospace_config, | |
1559 | .pci_config = qla4xxx_pci_config, | |
1560 | .disable_intrs = qla4xxx_disable_intrs, | |
1561 | .enable_intrs = qla4xxx_enable_intrs, | |
1562 | .start_firmware = qla4xxx_start_firmware, | |
1563 | .intr_handler = qla4xxx_intr_handler, | |
1564 | .interrupt_service_routine = qla4xxx_interrupt_service_routine, | |
1565 | .reset_chip = qla4xxx_soft_reset, | |
1566 | .reset_firmware = qla4xxx_hw_reset, | |
1567 | .queue_iocb = qla4xxx_queue_iocb, | |
1568 | .complete_iocb = qla4xxx_complete_iocb, | |
1569 | .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out, | |
1570 | .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in, | |
1571 | .get_sys_info = qla4xxx_get_sys_info, | |
1572 | }; | |
1573 | ||
1574 | static struct isp_operations qla4_8xxx_isp_ops = { | |
1575 | .iospace_config = qla4_8xxx_iospace_config, | |
1576 | .pci_config = qla4_8xxx_pci_config, | |
1577 | .disable_intrs = qla4_8xxx_disable_intrs, | |
1578 | .enable_intrs = qla4_8xxx_enable_intrs, | |
1579 | .start_firmware = qla4_8xxx_load_risc, | |
1580 | .intr_handler = qla4_8xxx_intr_handler, | |
1581 | .interrupt_service_routine = qla4_8xxx_interrupt_service_routine, | |
1582 | .reset_chip = qla4_8xxx_isp_reset, | |
1583 | .reset_firmware = qla4_8xxx_stop_firmware, | |
1584 | .queue_iocb = qla4_8xxx_queue_iocb, | |
1585 | .complete_iocb = qla4_8xxx_complete_iocb, | |
1586 | .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out, | |
1587 | .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in, | |
1588 | .get_sys_info = qla4_8xxx_get_sys_info, | |
1589 | }; | |
1590 | ||
1591 | uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) | |
1592 | { | |
1593 | return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out); | |
1594 | } | |
1595 | ||
1596 | uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha) | |
1597 | { | |
1598 | return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out)); | |
1599 | } | |
1600 | ||
1601 | uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) | |
1602 | { | |
1603 | return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in); | |
1604 | } | |
1605 | ||
1606 | uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha) | |
1607 | { | |
1608 | return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in)); | |
1609 | } | |
1610 | ||
afaf5a2d DS |
1611 | /** |
1612 | * qla4xxx_probe_adapter - callback function to probe HBA | |
1613 | * @pdev: pointer to pci_dev structure | |
1614 | * @pci_device_id: pointer to pci_device entry | |
1615 | * | |
1616 | * This routine will probe for Qlogic 4xxx iSCSI host adapters. | |
1617 | * It returns zero if successful. It also initializes all data necessary for | |
1618 | * the driver. | |
1619 | **/ | |
1620 | static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev, | |
1621 | const struct pci_device_id *ent) | |
1622 | { | |
1623 | int ret = -ENODEV, status; | |
1624 | struct Scsi_Host *host; | |
1625 | struct scsi_qla_host *ha; | |
afaf5a2d DS |
1626 | uint8_t init_retry_count = 0; |
1627 | char buf[34]; | |
f4f5df23 | 1628 | struct qla4_8xxx_legacy_intr_set *nx_legacy_intr; |
afaf5a2d DS |
1629 | |
1630 | if (pci_enable_device(pdev)) | |
1631 | return -1; | |
1632 | ||
1633 | host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha)); | |
1634 | if (host == NULL) { | |
1635 | printk(KERN_WARNING | |
1636 | "qla4xxx: Couldn't allocate host from scsi layer!\n"); | |
1637 | goto probe_disable_device; | |
1638 | } | |
1639 | ||
1640 | /* Clear our data area */ | |
1641 | ha = (struct scsi_qla_host *) host->hostdata; | |
1642 | memset(ha, 0, sizeof(*ha)); | |
1643 | ||
1644 | /* Save the information from PCI BIOS. */ | |
1645 | ha->pdev = pdev; | |
1646 | ha->host = host; | |
1647 | ha->host_no = host->host_no; | |
1648 | ||
2232be0d LC |
1649 | pci_enable_pcie_error_reporting(pdev); |
1650 | ||
f4f5df23 VC |
1651 | /* Setup Runtime configurable options */ |
1652 | if (is_qla8022(ha)) { | |
1653 | ha->isp_ops = &qla4_8xxx_isp_ops; | |
1654 | rwlock_init(&ha->hw_lock); | |
1655 | ha->qdr_sn_window = -1; | |
1656 | ha->ddr_mn_window = -1; | |
1657 | ha->curr_window = 255; | |
1658 | ha->func_num = PCI_FUNC(ha->pdev->devfn); | |
1659 | nx_legacy_intr = &legacy_intr[ha->func_num]; | |
1660 | ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit; | |
1661 | ha->nx_legacy_intr.tgt_status_reg = | |
1662 | nx_legacy_intr->tgt_status_reg; | |
1663 | ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg; | |
1664 | ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg; | |
1665 | } else { | |
1666 | ha->isp_ops = &qla4xxx_isp_ops; | |
1667 | } | |
1668 | ||
2232be0d LC |
1669 | /* Set EEH reset type to fundamental if required by hba */ |
1670 | if (is_qla8022(ha)) | |
1671 | pdev->needs_freset = 1; | |
1672 | ||
afaf5a2d | 1673 | /* Configure PCI I/O space. */ |
f4f5df23 | 1674 | ret = ha->isp_ops->iospace_config(ha); |
afaf5a2d | 1675 | if (ret) |
f4f5df23 | 1676 | goto probe_failed_ioconfig; |
afaf5a2d | 1677 | |
c2660df3 | 1678 | ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n", |
afaf5a2d DS |
1679 | pdev->device, pdev->irq, ha->reg); |
1680 | ||
1681 | qla4xxx_config_dma_addressing(ha); | |
1682 | ||
1683 | /* Initialize lists and spinlocks. */ | |
1684 | INIT_LIST_HEAD(&ha->ddb_list); | |
1685 | INIT_LIST_HEAD(&ha->free_srb_q); | |
1686 | ||
1687 | mutex_init(&ha->mbox_sem); | |
f4f5df23 | 1688 | init_completion(&ha->mbx_intr_comp); |
afaf5a2d DS |
1689 | |
1690 | spin_lock_init(&ha->hardware_lock); | |
afaf5a2d DS |
1691 | |
1692 | /* Allocate dma buffers */ | |
1693 | if (qla4xxx_mem_alloc(ha)) { | |
c2660df3 VC |
1694 | ql4_printk(KERN_WARNING, ha, |
1695 | "[ERROR] Failed to allocate memory for adapter\n"); | |
afaf5a2d DS |
1696 | |
1697 | ret = -ENOMEM; | |
1698 | goto probe_failed; | |
1699 | } | |
1700 | ||
f4f5df23 VC |
1701 | if (is_qla8022(ha)) |
1702 | (void) qla4_8xxx_get_flash_info(ha); | |
1703 | ||
afaf5a2d DS |
1704 | /* |
1705 | * Initialize the Host adapter request/response queues and | |
1706 | * firmware | |
1707 | * NOTE: interrupts enabled upon successful completion | |
1708 | */ | |
1709 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); | |
f4f5df23 VC |
1710 | while ((!test_bit(AF_ONLINE, &ha->flags)) && |
1711 | init_retry_count++ < MAX_INIT_RETRIES) { | |
afaf5a2d DS |
1712 | DEBUG2(printk("scsi: %s: retrying adapter initialization " |
1713 | "(%d)\n", __func__, init_retry_count)); | |
f4f5df23 VC |
1714 | |
1715 | if (ha->isp_ops->reset_chip(ha) == QLA_ERROR) | |
1716 | continue; | |
1717 | ||
afaf5a2d DS |
1718 | status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST); |
1719 | } | |
f4f5df23 VC |
1720 | |
1721 | if (!test_bit(AF_ONLINE, &ha->flags)) { | |
c2660df3 | 1722 | ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n"); |
afaf5a2d DS |
1723 | |
1724 | ret = -ENODEV; | |
1725 | goto probe_failed; | |
1726 | } | |
1727 | ||
1728 | host->cmd_per_lun = 3; | |
1729 | host->max_channel = 0; | |
1730 | host->max_lun = MAX_LUNS - 1; | |
1731 | host->max_id = MAX_TARGETS; | |
1732 | host->max_cmd_len = IOCB_MAX_CDB_LEN; | |
1733 | host->can_queue = MAX_SRBS ; | |
1734 | host->transportt = qla4xxx_scsi_transport; | |
1735 | ||
1736 | ret = scsi_init_shared_tag_map(host, MAX_SRBS); | |
1737 | if (ret) { | |
c2660df3 VC |
1738 | ql4_printk(KERN_WARNING, ha, |
1739 | "scsi_init_shared_tag_map failed\n"); | |
1740 | goto probe_failed; | |
afaf5a2d DS |
1741 | } |
1742 | ||
1743 | /* Startup the kernel thread for this host adapter. */ | |
1744 | DEBUG2(printk("scsi: %s: Starting kernel thread for " | |
1745 | "qla4xxx_dpc\n", __func__)); | |
1746 | sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no); | |
1747 | ha->dpc_thread = create_singlethread_workqueue(buf); | |
1748 | if (!ha->dpc_thread) { | |
c2660df3 | 1749 | ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n"); |
afaf5a2d DS |
1750 | ret = -ENODEV; |
1751 | goto probe_failed; | |
1752 | } | |
c4028958 | 1753 | INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc); |
afaf5a2d | 1754 | |
f4f5df23 VC |
1755 | /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc |
1756 | * (which is called indirectly by qla4xxx_initialize_adapter), | |
1757 | * so that irqs will be registered after crbinit but before | |
1758 | * mbx_intr_enable. | |
1759 | */ | |
1760 | if (!is_qla8022(ha)) { | |
1761 | ret = qla4xxx_request_irqs(ha); | |
1762 | if (ret) { | |
1763 | ql4_printk(KERN_WARNING, ha, "Failed to reserve " | |
1764 | "interrupt %d already in use.\n", pdev->irq); | |
1765 | goto probe_failed; | |
1766 | } | |
afaf5a2d | 1767 | } |
afaf5a2d | 1768 | |
2232be0d | 1769 | pci_save_state(ha->pdev); |
f4f5df23 | 1770 | ha->isp_ops->enable_intrs(ha); |
afaf5a2d DS |
1771 | |
1772 | /* Start timer thread. */ | |
1773 | qla4xxx_start_timer(ha, qla4xxx_timer, 1); | |
1774 | ||
1775 | set_bit(AF_INIT_DONE, &ha->flags); | |
1776 | ||
1777 | pci_set_drvdata(pdev, ha); | |
1778 | ||
1779 | ret = scsi_add_host(host, &pdev->dev); | |
1780 | if (ret) | |
1781 | goto probe_failed; | |
1782 | ||
afaf5a2d DS |
1783 | printk(KERN_INFO |
1784 | " QLogic iSCSI HBA Driver version: %s\n" | |
1785 | " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n", | |
1786 | qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev), | |
1787 | ha->host_no, ha->firmware_version[0], ha->firmware_version[1], | |
1788 | ha->patch_number, ha->build_number); | |
921601b7 | 1789 | scsi_scan_host(host); |
afaf5a2d DS |
1790 | return 0; |
1791 | ||
afaf5a2d DS |
1792 | probe_failed: |
1793 | qla4xxx_free_adapter(ha); | |
f4f5df23 VC |
1794 | |
1795 | probe_failed_ioconfig: | |
2232be0d | 1796 | pci_disable_pcie_error_reporting(pdev); |
afaf5a2d DS |
1797 | scsi_host_put(ha->host); |
1798 | ||
1799 | probe_disable_device: | |
1800 | pci_disable_device(pdev); | |
1801 | ||
1802 | return ret; | |
1803 | } | |
1804 | ||
1805 | /** | |
1806 | * qla4xxx_remove_adapter - calback function to remove adapter. | |
1807 | * @pci_dev: PCI device pointer | |
1808 | **/ | |
1809 | static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev) | |
1810 | { | |
1811 | struct scsi_qla_host *ha; | |
1812 | ||
1813 | ha = pci_get_drvdata(pdev); | |
1814 | ||
f4f5df23 | 1815 | set_bit(AF_HBA_GOING_AWAY, &ha->flags); |
bee4fe8e | 1816 | |
afaf5a2d DS |
1817 | /* remove devs from iscsi_sessions to scsi_devices */ |
1818 | qla4xxx_free_ddb_list(ha); | |
1819 | ||
1820 | scsi_remove_host(ha->host); | |
1821 | ||
1822 | qla4xxx_free_adapter(ha); | |
1823 | ||
1824 | scsi_host_put(ha->host); | |
1825 | ||
2232be0d | 1826 | pci_disable_pcie_error_reporting(pdev); |
f4f5df23 | 1827 | pci_disable_device(pdev); |
afaf5a2d DS |
1828 | pci_set_drvdata(pdev, NULL); |
1829 | } | |
1830 | ||
1831 | /** | |
1832 | * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method. | |
1833 | * @ha: HA context | |
1834 | * | |
1835 | * At exit, the @ha's flags.enable_64bit_addressing set to indicated | |
1836 | * supported addressing method. | |
1837 | */ | |
47975477 | 1838 | static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha) |
afaf5a2d DS |
1839 | { |
1840 | int retval; | |
1841 | ||
1842 | /* Update our PCI device dma_mask for full 64 bit mask */ | |
6a35528a YH |
1843 | if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) { |
1844 | if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) { | |
afaf5a2d DS |
1845 | dev_dbg(&ha->pdev->dev, |
1846 | "Failed to set 64 bit PCI consistent mask; " | |
1847 | "using 32 bit.\n"); | |
1848 | retval = pci_set_consistent_dma_mask(ha->pdev, | |
284901a9 | 1849 | DMA_BIT_MASK(32)); |
afaf5a2d DS |
1850 | } |
1851 | } else | |
284901a9 | 1852 | retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32)); |
afaf5a2d DS |
1853 | } |
1854 | ||
1855 | static int qla4xxx_slave_alloc(struct scsi_device *sdev) | |
1856 | { | |
1857 | struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target); | |
1858 | struct ddb_entry *ddb = sess->dd_data; | |
1859 | ||
1860 | sdev->hostdata = ddb; | |
1861 | sdev->tagged_supported = 1; | |
d510d965 | 1862 | scsi_activate_tcq(sdev, QL4_DEF_QDEPTH); |
afaf5a2d DS |
1863 | return 0; |
1864 | } | |
1865 | ||
1866 | static int qla4xxx_slave_configure(struct scsi_device *sdev) | |
1867 | { | |
1868 | sdev->tagged_supported = 1; | |
1869 | return 0; | |
1870 | } | |
1871 | ||
1872 | static void qla4xxx_slave_destroy(struct scsi_device *sdev) | |
1873 | { | |
1874 | scsi_deactivate_tcq(sdev, 1); | |
1875 | } | |
1876 | ||
1877 | /** | |
1878 | * qla4xxx_del_from_active_array - returns an active srb | |
1879 | * @ha: Pointer to host adapter structure. | |
fd589a8f | 1880 | * @index: index into the active_array |
afaf5a2d DS |
1881 | * |
1882 | * This routine removes and returns the srb at the specified index | |
1883 | **/ | |
f4f5df23 VC |
1884 | struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha, |
1885 | uint32_t index) | |
afaf5a2d DS |
1886 | { |
1887 | struct srb *srb = NULL; | |
5369887a | 1888 | struct scsi_cmnd *cmd = NULL; |
afaf5a2d | 1889 | |
5369887a VC |
1890 | cmd = scsi_host_find_tag(ha->host, index); |
1891 | if (!cmd) | |
afaf5a2d DS |
1892 | return srb; |
1893 | ||
5369887a VC |
1894 | srb = (struct srb *)CMD_SP(cmd); |
1895 | if (!srb) | |
afaf5a2d DS |
1896 | return srb; |
1897 | ||
1898 | /* update counters */ | |
1899 | if (srb->flags & SRB_DMA_VALID) { | |
1900 | ha->req_q_count += srb->iocb_cnt; | |
1901 | ha->iocb_cnt -= srb->iocb_cnt; | |
1902 | if (srb->cmd) | |
5369887a VC |
1903 | srb->cmd->host_scribble = |
1904 | (unsigned char *)(unsigned long) MAX_SRBS; | |
afaf5a2d DS |
1905 | } |
1906 | return srb; | |
1907 | } | |
1908 | ||
afaf5a2d DS |
1909 | /** |
1910 | * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware | |
09a0f719 | 1911 | * @ha: Pointer to host adapter structure. |
afaf5a2d DS |
1912 | * @cmd: Scsi Command to wait on. |
1913 | * | |
1914 | * This routine waits for the command to be returned by the Firmware | |
1915 | * for some max time. | |
1916 | **/ | |
1917 | static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha, | |
1918 | struct scsi_cmnd *cmd) | |
1919 | { | |
1920 | int done = 0; | |
1921 | struct srb *rp; | |
1922 | uint32_t max_wait_time = EH_WAIT_CMD_TOV; | |
2232be0d LC |
1923 | int ret = SUCCESS; |
1924 | ||
1925 | /* Dont wait on command if PCI error is being handled | |
1926 | * by PCI AER driver | |
1927 | */ | |
1928 | if (unlikely(pci_channel_offline(ha->pdev)) || | |
1929 | (test_bit(AF_EEH_BUSY, &ha->flags))) { | |
1930 | ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n", | |
1931 | ha->host_no, __func__); | |
1932 | return ret; | |
1933 | } | |
afaf5a2d DS |
1934 | |
1935 | do { | |
1936 | /* Checking to see if its returned to OS */ | |
5369887a | 1937 | rp = (struct srb *) CMD_SP(cmd); |
afaf5a2d DS |
1938 | if (rp == NULL) { |
1939 | done++; | |
1940 | break; | |
1941 | } | |
1942 | ||
1943 | msleep(2000); | |
1944 | } while (max_wait_time--); | |
1945 | ||
1946 | return done; | |
1947 | } | |
1948 | ||
1949 | /** | |
1950 | * qla4xxx_wait_for_hba_online - waits for HBA to come online | |
1951 | * @ha: Pointer to host adapter structure | |
1952 | **/ | |
1953 | static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha) | |
1954 | { | |
1955 | unsigned long wait_online; | |
1956 | ||
f581a3f7 | 1957 | wait_online = jiffies + (HBA_ONLINE_TOV * HZ); |
afaf5a2d DS |
1958 | while (time_before(jiffies, wait_online)) { |
1959 | ||
1960 | if (adapter_up(ha)) | |
1961 | return QLA_SUCCESS; | |
afaf5a2d DS |
1962 | |
1963 | msleep(2000); | |
1964 | } | |
1965 | ||
1966 | return QLA_ERROR; | |
1967 | } | |
1968 | ||
1969 | /** | |
ce545039 | 1970 | * qla4xxx_eh_wait_for_commands - wait for active cmds to finish. |
fd589a8f | 1971 | * @ha: pointer to HBA |
afaf5a2d DS |
1972 | * @t: target id |
1973 | * @l: lun id | |
1974 | * | |
1975 | * This function waits for all outstanding commands to a lun to complete. It | |
1976 | * returns 0 if all pending commands are returned and 1 otherwise. | |
1977 | **/ | |
ce545039 MC |
1978 | static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha, |
1979 | struct scsi_target *stgt, | |
1980 | struct scsi_device *sdev) | |
afaf5a2d DS |
1981 | { |
1982 | int cnt; | |
1983 | int status = 0; | |
1984 | struct scsi_cmnd *cmd; | |
1985 | ||
1986 | /* | |
ce545039 MC |
1987 | * Waiting for all commands for the designated target or dev |
1988 | * in the active array | |
afaf5a2d DS |
1989 | */ |
1990 | for (cnt = 0; cnt < ha->host->can_queue; cnt++) { | |
1991 | cmd = scsi_host_find_tag(ha->host, cnt); | |
ce545039 MC |
1992 | if (cmd && stgt == scsi_target(cmd->device) && |
1993 | (!sdev || sdev == cmd->device)) { | |
afaf5a2d DS |
1994 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { |
1995 | status++; | |
1996 | break; | |
1997 | } | |
1998 | } | |
1999 | } | |
2000 | return status; | |
2001 | } | |
2002 | ||
09a0f719 VC |
2003 | /** |
2004 | * qla4xxx_eh_abort - callback for abort task. | |
2005 | * @cmd: Pointer to Linux's SCSI command structure | |
2006 | * | |
2007 | * This routine is called by the Linux OS to abort the specified | |
2008 | * command. | |
2009 | **/ | |
2010 | static int qla4xxx_eh_abort(struct scsi_cmnd *cmd) | |
2011 | { | |
2012 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
2013 | unsigned int id = cmd->device->id; | |
2014 | unsigned int lun = cmd->device->lun; | |
2015 | unsigned long serial = cmd->serial_number; | |
92b3e5bb | 2016 | unsigned long flags; |
09a0f719 VC |
2017 | struct srb *srb = NULL; |
2018 | int ret = SUCCESS; | |
2019 | int wait = 0; | |
2020 | ||
c2660df3 | 2021 | ql4_printk(KERN_INFO, ha, |
09a0f719 VC |
2022 | "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n", |
2023 | ha->host_no, id, lun, cmd, serial); | |
2024 | ||
92b3e5bb | 2025 | spin_lock_irqsave(&ha->hardware_lock, flags); |
09a0f719 | 2026 | srb = (struct srb *) CMD_SP(cmd); |
92b3e5bb MC |
2027 | if (!srb) { |
2028 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
09a0f719 | 2029 | return SUCCESS; |
92b3e5bb | 2030 | } |
09a0f719 | 2031 | kref_get(&srb->srb_ref); |
92b3e5bb | 2032 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
09a0f719 VC |
2033 | |
2034 | if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) { | |
2035 | DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n", | |
2036 | ha->host_no, id, lun)); | |
2037 | ret = FAILED; | |
2038 | } else { | |
2039 | DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n", | |
2040 | ha->host_no, id, lun)); | |
2041 | wait = 1; | |
2042 | } | |
2043 | ||
2044 | kref_put(&srb->srb_ref, qla4xxx_srb_compl); | |
2045 | ||
2046 | /* Wait for command to complete */ | |
2047 | if (wait) { | |
2048 | if (!qla4xxx_eh_wait_on_command(ha, cmd)) { | |
2049 | DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n", | |
2050 | ha->host_no, id, lun)); | |
2051 | ret = FAILED; | |
2052 | } | |
2053 | } | |
2054 | ||
c2660df3 | 2055 | ql4_printk(KERN_INFO, ha, |
09a0f719 VC |
2056 | "scsi%ld:%d:%d: Abort command - %s\n", |
2057 | ha->host_no, id, lun, (ret == SUCCESS) ? "succeded" : "failed"); | |
2058 | ||
2059 | return ret; | |
2060 | } | |
2061 | ||
afaf5a2d DS |
2062 | /** |
2063 | * qla4xxx_eh_device_reset - callback for target reset. | |
2064 | * @cmd: Pointer to Linux's SCSI command structure | |
2065 | * | |
2066 | * This routine is called by the Linux OS to reset all luns on the | |
2067 | * specified target. | |
2068 | **/ | |
2069 | static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd) | |
2070 | { | |
2071 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
2072 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
afaf5a2d DS |
2073 | int ret = FAILED, stat; |
2074 | ||
612f7348 | 2075 | if (!ddb_entry) |
afaf5a2d DS |
2076 | return ret; |
2077 | ||
c01be6dc MC |
2078 | ret = iscsi_block_scsi_eh(cmd); |
2079 | if (ret) | |
2080 | return ret; | |
2081 | ret = FAILED; | |
2082 | ||
c2660df3 | 2083 | ql4_printk(KERN_INFO, ha, |
afaf5a2d DS |
2084 | "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no, |
2085 | cmd->device->channel, cmd->device->id, cmd->device->lun); | |
2086 | ||
2087 | DEBUG2(printk(KERN_INFO | |
2088 | "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x," | |
2089 | "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no, | |
242f9dcb | 2090 | cmd, jiffies, cmd->request->timeout / HZ, |
afaf5a2d DS |
2091 | ha->dpc_flags, cmd->result, cmd->allowed)); |
2092 | ||
2093 | /* FIXME: wait for hba to go online */ | |
2094 | stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun); | |
2095 | if (stat != QLA_SUCCESS) { | |
c2660df3 | 2096 | ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat); |
afaf5a2d DS |
2097 | goto eh_dev_reset_done; |
2098 | } | |
2099 | ||
ce545039 MC |
2100 | if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), |
2101 | cmd->device)) { | |
c2660df3 | 2102 | ql4_printk(KERN_INFO, ha, |
ce545039 MC |
2103 | "DEVICE RESET FAILED - waiting for " |
2104 | "commands.\n"); | |
2105 | goto eh_dev_reset_done; | |
afaf5a2d DS |
2106 | } |
2107 | ||
9d562913 DS |
2108 | /* Send marker. */ |
2109 | if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, | |
2110 | MM_LUN_RESET) != QLA_SUCCESS) | |
2111 | goto eh_dev_reset_done; | |
2112 | ||
c2660df3 | 2113 | ql4_printk(KERN_INFO, ha, |
afaf5a2d DS |
2114 | "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n", |
2115 | ha->host_no, cmd->device->channel, cmd->device->id, | |
2116 | cmd->device->lun); | |
2117 | ||
2118 | ret = SUCCESS; | |
2119 | ||
2120 | eh_dev_reset_done: | |
2121 | ||
2122 | return ret; | |
2123 | } | |
2124 | ||
ce545039 MC |
2125 | /** |
2126 | * qla4xxx_eh_target_reset - callback for target reset. | |
2127 | * @cmd: Pointer to Linux's SCSI command structure | |
2128 | * | |
2129 | * This routine is called by the Linux OS to reset the target. | |
2130 | **/ | |
2131 | static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd) | |
2132 | { | |
2133 | struct scsi_qla_host *ha = to_qla_host(cmd->device->host); | |
2134 | struct ddb_entry *ddb_entry = cmd->device->hostdata; | |
c01be6dc | 2135 | int stat, ret; |
ce545039 MC |
2136 | |
2137 | if (!ddb_entry) | |
2138 | return FAILED; | |
2139 | ||
c01be6dc MC |
2140 | ret = iscsi_block_scsi_eh(cmd); |
2141 | if (ret) | |
2142 | return ret; | |
2143 | ||
ce545039 MC |
2144 | starget_printk(KERN_INFO, scsi_target(cmd->device), |
2145 | "WARM TARGET RESET ISSUED.\n"); | |
2146 | ||
2147 | DEBUG2(printk(KERN_INFO | |
2148 | "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, " | |
2149 | "to=%x,dpc_flags=%lx, status=%x allowed=%d\n", | |
242f9dcb | 2150 | ha->host_no, cmd, jiffies, cmd->request->timeout / HZ, |
ce545039 MC |
2151 | ha->dpc_flags, cmd->result, cmd->allowed)); |
2152 | ||
2153 | stat = qla4xxx_reset_target(ha, ddb_entry); | |
2154 | if (stat != QLA_SUCCESS) { | |
2155 | starget_printk(KERN_INFO, scsi_target(cmd->device), | |
2156 | "WARM TARGET RESET FAILED.\n"); | |
2157 | return FAILED; | |
2158 | } | |
2159 | ||
ce545039 MC |
2160 | if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device), |
2161 | NULL)) { | |
2162 | starget_printk(KERN_INFO, scsi_target(cmd->device), | |
2163 | "WARM TARGET DEVICE RESET FAILED - " | |
2164 | "waiting for commands.\n"); | |
2165 | return FAILED; | |
2166 | } | |
2167 | ||
9d562913 DS |
2168 | /* Send marker. */ |
2169 | if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun, | |
2170 | MM_TGT_WARM_RESET) != QLA_SUCCESS) { | |
2171 | starget_printk(KERN_INFO, scsi_target(cmd->device), | |
2172 | "WARM TARGET DEVICE RESET FAILED - " | |
2173 | "marker iocb failed.\n"); | |
2174 | return FAILED; | |
2175 | } | |
2176 | ||
ce545039 MC |
2177 | starget_printk(KERN_INFO, scsi_target(cmd->device), |
2178 | "WARM TARGET RESET SUCCEEDED.\n"); | |
2179 | return SUCCESS; | |
2180 | } | |
2181 | ||
afaf5a2d DS |
2182 | /** |
2183 | * qla4xxx_eh_host_reset - kernel callback | |
2184 | * @cmd: Pointer to Linux's SCSI command structure | |
2185 | * | |
2186 | * This routine is invoked by the Linux kernel to perform fatal error | |
2187 | * recovery on the specified adapter. | |
2188 | **/ | |
2189 | static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd) | |
2190 | { | |
2191 | int return_status = FAILED; | |
2192 | struct scsi_qla_host *ha; | |
2193 | ||
2194 | ha = (struct scsi_qla_host *) cmd->device->host->hostdata; | |
2195 | ||
f4f5df23 VC |
2196 | if (ql4xdontresethba) { |
2197 | DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n", | |
2198 | ha->host_no, __func__)); | |
2199 | return FAILED; | |
2200 | } | |
2201 | ||
c2660df3 | 2202 | ql4_printk(KERN_INFO, ha, |
dca05c4c | 2203 | "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no, |
afaf5a2d DS |
2204 | cmd->device->channel, cmd->device->id, cmd->device->lun); |
2205 | ||
2206 | if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) { | |
2207 | DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter " | |
2208 | "DEAD.\n", ha->host_no, cmd->device->channel, | |
2209 | __func__)); | |
2210 | ||
2211 | return FAILED; | |
2212 | } | |
2213 | ||
f4f5df23 VC |
2214 | if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) { |
2215 | if (is_qla8022(ha)) | |
2216 | set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags); | |
2217 | else | |
2218 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
2219 | } | |
50a29aec | 2220 | |
f4f5df23 | 2221 | if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS) |
afaf5a2d | 2222 | return_status = SUCCESS; |
afaf5a2d | 2223 | |
c2660df3 | 2224 | ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n", |
afaf5a2d DS |
2225 | return_status == FAILED ? "FAILED" : "SUCCEDED"); |
2226 | ||
2227 | return return_status; | |
2228 | } | |
2229 | ||
2232be0d LC |
2230 | /* PCI AER driver recovers from all correctable errors w/o |
2231 | * driver intervention. For uncorrectable errors PCI AER | |
2232 | * driver calls the following device driver's callbacks | |
2233 | * | |
2234 | * - Fatal Errors - link_reset | |
2235 | * - Non-Fatal Errors - driver's pci_error_detected() which | |
2236 | * returns CAN_RECOVER, NEED_RESET or DISCONNECT. | |
2237 | * | |
2238 | * PCI AER driver calls | |
2239 | * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled | |
2240 | * returns RECOVERED or NEED_RESET if fw_hung | |
2241 | * NEED_RESET - driver's slot_reset() | |
2242 | * DISCONNECT - device is dead & cannot recover | |
2243 | * RECOVERED - driver's pci_resume() | |
2244 | */ | |
2245 | static pci_ers_result_t | |
2246 | qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
2247 | { | |
2248 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2249 | ||
2250 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n", | |
2251 | ha->host_no, __func__, state); | |
2252 | ||
2253 | if (!is_aer_supported(ha)) | |
2254 | return PCI_ERS_RESULT_NONE; | |
2255 | ||
2256 | switch (state) { | |
2257 | case pci_channel_io_normal: | |
2258 | clear_bit(AF_EEH_BUSY, &ha->flags); | |
2259 | return PCI_ERS_RESULT_CAN_RECOVER; | |
2260 | case pci_channel_io_frozen: | |
2261 | set_bit(AF_EEH_BUSY, &ha->flags); | |
2262 | qla4xxx_mailbox_premature_completion(ha); | |
2263 | qla4xxx_free_irqs(ha); | |
2264 | pci_disable_device(pdev); | |
7b3595df VC |
2265 | /* Return back all IOs */ |
2266 | qla4xxx_abort_active_cmds(ha, DID_RESET << 16); | |
2232be0d LC |
2267 | return PCI_ERS_RESULT_NEED_RESET; |
2268 | case pci_channel_io_perm_failure: | |
2269 | set_bit(AF_EEH_BUSY, &ha->flags); | |
2270 | set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags); | |
2271 | qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16); | |
2272 | return PCI_ERS_RESULT_DISCONNECT; | |
2273 | } | |
2274 | return PCI_ERS_RESULT_NEED_RESET; | |
2275 | } | |
2276 | ||
2277 | /** | |
2278 | * qla4xxx_pci_mmio_enabled() gets called if | |
2279 | * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER | |
2280 | * and read/write to the device still works. | |
2281 | **/ | |
2282 | static pci_ers_result_t | |
2283 | qla4xxx_pci_mmio_enabled(struct pci_dev *pdev) | |
2284 | { | |
2285 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2286 | ||
2287 | if (!is_aer_supported(ha)) | |
2288 | return PCI_ERS_RESULT_NONE; | |
2289 | ||
7b3595df | 2290 | return PCI_ERS_RESULT_RECOVERED; |
2232be0d LC |
2291 | } |
2292 | ||
7b3595df | 2293 | static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha) |
2232be0d LC |
2294 | { |
2295 | uint32_t rval = QLA_ERROR; | |
7b3595df | 2296 | uint32_t ret = 0; |
2232be0d LC |
2297 | int fn; |
2298 | struct pci_dev *other_pdev = NULL; | |
2299 | ||
2300 | ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__); | |
2301 | ||
2302 | set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); | |
2303 | ||
2304 | if (test_bit(AF_ONLINE, &ha->flags)) { | |
2305 | clear_bit(AF_ONLINE, &ha->flags); | |
2306 | qla4xxx_mark_all_devices_missing(ha); | |
2307 | qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS); | |
2232be0d LC |
2308 | } |
2309 | ||
2310 | fn = PCI_FUNC(ha->pdev->devfn); | |
2311 | while (fn > 0) { | |
2312 | fn--; | |
2313 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at " | |
2314 | "func %x\n", ha->host_no, __func__, fn); | |
2315 | /* Get the pci device given the domain, bus, | |
2316 | * slot/function number */ | |
2317 | other_pdev = | |
2318 | pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus), | |
2319 | ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn), | |
2320 | fn)); | |
2321 | ||
2322 | if (!other_pdev) | |
2323 | continue; | |
2324 | ||
2325 | if (atomic_read(&other_pdev->enable_cnt)) { | |
2326 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI " | |
2327 | "func in enabled state%x\n", ha->host_no, | |
2328 | __func__, fn); | |
2329 | pci_dev_put(other_pdev); | |
2330 | break; | |
2331 | } | |
2332 | pci_dev_put(other_pdev); | |
2333 | } | |
2334 | ||
2335 | /* The first function on the card, the reset owner will | |
2336 | * start & initialize the firmware. The other functions | |
2337 | * on the card will reset the firmware context | |
2338 | */ | |
2339 | if (!fn) { | |
2340 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset " | |
2341 | "0x%x is the owner\n", ha->host_no, __func__, | |
2342 | ha->pdev->devfn); | |
2343 | ||
2344 | qla4_8xxx_idc_lock(ha); | |
2345 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
2346 | QLA82XX_DEV_COLD); | |
2347 | ||
2348 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION, | |
2349 | QLA82XX_IDC_VERSION); | |
2350 | ||
2351 | qla4_8xxx_idc_unlock(ha); | |
2352 | clear_bit(AF_FW_RECOVERY, &ha->flags); | |
2353 | rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST); | |
2354 | qla4_8xxx_idc_lock(ha); | |
2355 | ||
2356 | if (rval != QLA_SUCCESS) { | |
2357 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " | |
2358 | "FAILED\n", ha->host_no, __func__); | |
2359 | qla4_8xxx_clear_drv_active(ha); | |
2360 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
2361 | QLA82XX_DEV_FAILED); | |
2362 | } else { | |
2363 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: " | |
2364 | "READY\n", ha->host_no, __func__); | |
2365 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE, | |
2366 | QLA82XX_DEV_READY); | |
2367 | /* Clear driver state register */ | |
2368 | qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0); | |
2369 | qla4_8xxx_set_drv_active(ha); | |
7b3595df VC |
2370 | ret = qla4xxx_request_irqs(ha); |
2371 | if (ret) { | |
2372 | ql4_printk(KERN_WARNING, ha, "Failed to " | |
2373 | "reserve interrupt %d already in use.\n", | |
2374 | ha->pdev->irq); | |
2375 | rval = QLA_ERROR; | |
2376 | } else { | |
2377 | ha->isp_ops->enable_intrs(ha); | |
2378 | rval = QLA_SUCCESS; | |
2379 | } | |
2232be0d LC |
2380 | } |
2381 | qla4_8xxx_idc_unlock(ha); | |
2382 | } else { | |
2383 | ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not " | |
2384 | "the reset owner\n", ha->host_no, __func__, | |
2385 | ha->pdev->devfn); | |
2386 | if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) == | |
2387 | QLA82XX_DEV_READY)) { | |
2388 | clear_bit(AF_FW_RECOVERY, &ha->flags); | |
2389 | rval = qla4xxx_initialize_adapter(ha, | |
2390 | PRESERVE_DDB_LIST); | |
7b3595df VC |
2391 | if (rval == QLA_SUCCESS) { |
2392 | ret = qla4xxx_request_irqs(ha); | |
2393 | if (ret) { | |
2394 | ql4_printk(KERN_WARNING, ha, "Failed to" | |
2395 | " reserve interrupt %d already in" | |
2396 | " use.\n", ha->pdev->irq); | |
2397 | rval = QLA_ERROR; | |
2398 | } else { | |
2399 | ha->isp_ops->enable_intrs(ha); | |
2400 | rval = QLA_SUCCESS; | |
2401 | } | |
2402 | } | |
2232be0d LC |
2403 | qla4_8xxx_idc_lock(ha); |
2404 | qla4_8xxx_set_drv_active(ha); | |
2405 | qla4_8xxx_idc_unlock(ha); | |
2406 | } | |
2407 | } | |
2408 | clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags); | |
2409 | return rval; | |
2410 | } | |
2411 | ||
2412 | static pci_ers_result_t | |
2413 | qla4xxx_pci_slot_reset(struct pci_dev *pdev) | |
2414 | { | |
2415 | pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT; | |
2416 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2417 | int rc; | |
2418 | ||
2419 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n", | |
2420 | ha->host_no, __func__); | |
2421 | ||
2422 | if (!is_aer_supported(ha)) | |
2423 | return PCI_ERS_RESULT_NONE; | |
2424 | ||
2425 | /* Restore the saved state of PCIe device - | |
2426 | * BAR registers, PCI Config space, PCIX, MSI, | |
2427 | * IOV states | |
2428 | */ | |
2429 | pci_restore_state(pdev); | |
2430 | ||
2431 | /* pci_restore_state() clears the saved_state flag of the device | |
2432 | * save restored state which resets saved_state flag | |
2433 | */ | |
2434 | pci_save_state(pdev); | |
2435 | ||
2436 | /* Initialize device or resume if in suspended state */ | |
2437 | rc = pci_enable_device(pdev); | |
2438 | if (rc) { | |
2439 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cant re-enable " | |
2440 | "device after reset\n", ha->host_no, __func__); | |
2441 | goto exit_slot_reset; | |
2442 | } | |
2443 | ||
7b3595df | 2444 | ha->isp_ops->disable_intrs(ha); |
2232be0d LC |
2445 | |
2446 | if (is_qla8022(ha)) { | |
2447 | if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) { | |
2448 | ret = PCI_ERS_RESULT_RECOVERED; | |
2449 | goto exit_slot_reset; | |
2450 | } else | |
2451 | goto exit_slot_reset; | |
2452 | } | |
2453 | ||
2454 | exit_slot_reset: | |
2455 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n" | |
2456 | "device after reset\n", ha->host_no, __func__, ret); | |
2457 | return ret; | |
2458 | } | |
2459 | ||
2460 | static void | |
2461 | qla4xxx_pci_resume(struct pci_dev *pdev) | |
2462 | { | |
2463 | struct scsi_qla_host *ha = pci_get_drvdata(pdev); | |
2464 | int ret; | |
2465 | ||
2466 | ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n", | |
2467 | ha->host_no, __func__); | |
2468 | ||
2469 | ret = qla4xxx_wait_for_hba_online(ha); | |
2470 | if (ret != QLA_SUCCESS) { | |
2471 | ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to " | |
2472 | "resume I/O from slot/link_reset\n", ha->host_no, | |
2473 | __func__); | |
2474 | } | |
2475 | ||
2476 | pci_cleanup_aer_uncorrect_error_status(pdev); | |
2477 | clear_bit(AF_EEH_BUSY, &ha->flags); | |
2478 | } | |
2479 | ||
2480 | static struct pci_error_handlers qla4xxx_err_handler = { | |
2481 | .error_detected = qla4xxx_pci_error_detected, | |
2482 | .mmio_enabled = qla4xxx_pci_mmio_enabled, | |
2483 | .slot_reset = qla4xxx_pci_slot_reset, | |
2484 | .resume = qla4xxx_pci_resume, | |
2485 | }; | |
2486 | ||
afaf5a2d DS |
2487 | static struct pci_device_id qla4xxx_pci_tbl[] = { |
2488 | { | |
2489 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2490 | .device = PCI_DEVICE_ID_QLOGIC_ISP4010, | |
2491 | .subvendor = PCI_ANY_ID, | |
2492 | .subdevice = PCI_ANY_ID, | |
2493 | }, | |
2494 | { | |
2495 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2496 | .device = PCI_DEVICE_ID_QLOGIC_ISP4022, | |
2497 | .subvendor = PCI_ANY_ID, | |
2498 | .subdevice = PCI_ANY_ID, | |
2499 | }, | |
d915058f DS |
2500 | { |
2501 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2502 | .device = PCI_DEVICE_ID_QLOGIC_ISP4032, | |
2503 | .subvendor = PCI_ANY_ID, | |
2504 | .subdevice = PCI_ANY_ID, | |
2505 | }, | |
f4f5df23 VC |
2506 | { |
2507 | .vendor = PCI_VENDOR_ID_QLOGIC, | |
2508 | .device = PCI_DEVICE_ID_QLOGIC_ISP8022, | |
2509 | .subvendor = PCI_ANY_ID, | |
2510 | .subdevice = PCI_ANY_ID, | |
2511 | }, | |
afaf5a2d DS |
2512 | {0, 0}, |
2513 | }; | |
2514 | MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl); | |
2515 | ||
47975477 | 2516 | static struct pci_driver qla4xxx_pci_driver = { |
afaf5a2d DS |
2517 | .name = DRIVER_NAME, |
2518 | .id_table = qla4xxx_pci_tbl, | |
2519 | .probe = qla4xxx_probe_adapter, | |
2520 | .remove = qla4xxx_remove_adapter, | |
2232be0d | 2521 | .err_handler = &qla4xxx_err_handler, |
afaf5a2d DS |
2522 | }; |
2523 | ||
2524 | static int __init qla4xxx_module_init(void) | |
2525 | { | |
2526 | int ret; | |
2527 | ||
2528 | /* Allocate cache for SRBs. */ | |
2529 | srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, | |
20c2df83 | 2530 | SLAB_HWCACHE_ALIGN, NULL); |
afaf5a2d DS |
2531 | if (srb_cachep == NULL) { |
2532 | printk(KERN_ERR | |
2533 | "%s: Unable to allocate SRB cache..." | |
2534 | "Failing load!\n", DRIVER_NAME); | |
2535 | ret = -ENOMEM; | |
2536 | goto no_srp_cache; | |
2537 | } | |
2538 | ||
2539 | /* Derive version string. */ | |
2540 | strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION); | |
11010fec | 2541 | if (ql4xextended_error_logging) |
afaf5a2d DS |
2542 | strcat(qla4xxx_version_str, "-debug"); |
2543 | ||
2544 | qla4xxx_scsi_transport = | |
2545 | iscsi_register_transport(&qla4xxx_iscsi_transport); | |
2546 | if (!qla4xxx_scsi_transport){ | |
2547 | ret = -ENODEV; | |
2548 | goto release_srb_cache; | |
2549 | } | |
2550 | ||
afaf5a2d DS |
2551 | ret = pci_register_driver(&qla4xxx_pci_driver); |
2552 | if (ret) | |
2553 | goto unregister_transport; | |
2554 | ||
2555 | printk(KERN_INFO "QLogic iSCSI HBA Driver\n"); | |
2556 | return 0; | |
5ae16db3 | 2557 | |
afaf5a2d DS |
2558 | unregister_transport: |
2559 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
2560 | release_srb_cache: | |
2561 | kmem_cache_destroy(srb_cachep); | |
2562 | no_srp_cache: | |
2563 | return ret; | |
2564 | } | |
2565 | ||
2566 | static void __exit qla4xxx_module_exit(void) | |
2567 | { | |
2568 | pci_unregister_driver(&qla4xxx_pci_driver); | |
2569 | iscsi_unregister_transport(&qla4xxx_iscsi_transport); | |
2570 | kmem_cache_destroy(srb_cachep); | |
2571 | } | |
2572 | ||
2573 | module_init(qla4xxx_module_init); | |
2574 | module_exit(qla4xxx_module_exit); | |
2575 | ||
2576 | MODULE_AUTHOR("QLogic Corporation"); | |
2577 | MODULE_DESCRIPTION("QLogic iSCSI HBA Driver"); | |
2578 | MODULE_LICENSE("GPL"); | |
2579 | MODULE_VERSION(QLA4XXX_DRIVER_VERSION); |