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[SCSI] iscsi class: add bsg support to iscsi class
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / qla4xxx / ql4_os.c
CommitLineData
afaf5a2d
DS		 1/*
2 * QLogic iSCSI HBA Driver
7d01d069 3 * Copyright (c) 2003-2010 QLogic Corporation
afaf5a2d
DS		 4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7#include <linux/moduleparam.h>
5a0e3ad6 8#include <linux/slab.h>
afaf5a2d
DS		 9
10#include <scsi/scsi_tcq.h>
11#include <scsi/scsicam.h>
12
13#include "ql4_def.h"
bee4fe8e
DS		 14#include "ql4_version.h"
15#include "ql4_glbl.h"
16#include "ql4_dbg.h"
17#include "ql4_inline.h"
afaf5a2d
DS		 18
19/*
20 * Driver version
21 */
47975477 22static char qla4xxx_version_str[40];
afaf5a2d
DS		 23
24/*
25 * SRB allocation cache
26 */
e18b890b 27static struct kmem_cache *srb_cachep;
afaf5a2d
DS		 28
29/*
30 * Module parameter information and variables
31 */
afaf5a2d 32int ql4xdontresethba = 0;
f4f5df23 33module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
afaf5a2d 34MODULE_PARM_DESC(ql4xdontresethba,
f4f5df23
VC		 35 "Don't reset the HBA for driver recovery \n"
36 " 0 - It will reset HBA (Default)\n"
37 " 1 - It will NOT reset HBA");
afaf5a2d 38
11010fec 39int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */
f4f5df23 40module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
11010fec 41MODULE_PARM_DESC(ql4xextended_error_logging,
afaf5a2d
DS		 42 "Option to enable extended error logging, "
43 "Default is 0 - no logging, 1 - debug logging");
44
f4f5df23
VC		 45int ql4xenablemsix = 1;
46module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql4xenablemsix,
48 "Set to enable MSI or MSI-X interrupt mechanism.\n"
49 " 0 = enable INTx interrupt mechanism.\n"
50 " 1 = enable MSI-X interrupt mechanism (Default).\n"
51 " 2 = enable MSI interrupt mechanism.");
477ffb9d 52
d510d965 53#define QL4_DEF_QDEPTH 32
8bb4033d
VC		 54static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
55module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
56MODULE_PARM_DESC(ql4xmaxqdepth,
57 "Maximum queue depth to report for target devices.\n"
58 " Default: 32.");
d510d965 59
3038727c
VC		 60static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
61module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
62MODULE_PARM_DESC(ql4xsess_recovery_tmo,
63 "Target Session Recovery Timeout.\n"
64 " Default: 30 sec.");
65
afaf5a2d
DS		 66/*
67 * SCSI host template entry points
68 */
47975477 69static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
afaf5a2d
DS		 70
71/*
72 * iSCSI template entry points
73 */
2174a04e
MC		 74static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost,
75 enum iscsi_tgt_dscvr type, uint32_t enable,
76 struct sockaddr *dst_addr);
afaf5a2d
DS		 77static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
78 enum iscsi_param param, char *buf);
79static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
80 enum iscsi_param param, char *buf);
aa1e93a2
MC		 81static int qla4xxx_host_get_param(struct Scsi_Host *shost,
82 enum iscsi_host_param param, char *buf);
d00efe3f
MC		 83static int qla4xxx_iface_set_param(struct Scsi_Host *shost, char *data,
84 int count);
ed1086e0
VC		 85static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
86 enum iscsi_param_type param_type,
87 int param, char *buf);
afaf5a2d 88static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session);
5c656af7 89static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
afaf5a2d
DS		 90
91/*
92 * SCSI host template entry points
93 */
f281233d 94static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
09a0f719 95static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
afaf5a2d 96static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
ce545039 97static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
afaf5a2d
DS		 98static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
99static int qla4xxx_slave_alloc(struct scsi_device *device);
100static int qla4xxx_slave_configure(struct scsi_device *device);
101static void qla4xxx_slave_destroy(struct scsi_device *sdev);
024f801f 102static void qla4xxx_scan_start(struct Scsi_Host *shost);
3128c6c7 103static mode_t ql4_attr_is_visible(int param_type, int param);
afaf5a2d 104
f4f5df23
VC		 105static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
106 QLA82XX_LEGACY_INTR_CONFIG;
107
afaf5a2d
DS		 108static struct scsi_host_template qla4xxx_driver_template = {
109 .module = THIS_MODULE,
110 .name = DRIVER_NAME,
111 .proc_name = DRIVER_NAME,
112 .queuecommand = qla4xxx_queuecommand,
113
09a0f719 114 .eh_abort_handler = qla4xxx_eh_abort,
afaf5a2d 115 .eh_device_reset_handler = qla4xxx_eh_device_reset,
ce545039 116 .eh_target_reset_handler = qla4xxx_eh_target_reset,
afaf5a2d 117 .eh_host_reset_handler = qla4xxx_eh_host_reset,
5c656af7 118 .eh_timed_out = qla4xxx_eh_cmd_timed_out,
afaf5a2d
DS		 119
120 .slave_configure = qla4xxx_slave_configure,
121 .slave_alloc = qla4xxx_slave_alloc,
122 .slave_destroy = qla4xxx_slave_destroy,
123
921601b7 124 .scan_finished = iscsi_scan_finished,
024f801f 125 .scan_start = qla4xxx_scan_start,
921601b7 126
afaf5a2d
DS		 127 .this_id = -1,
128 .cmd_per_lun = 3,
129 .use_clustering = ENABLE_CLUSTERING,
130 .sg_tablesize = SG_ALL,
131
132 .max_sectors = 0xFFFF,
7ad633c0 133 .shost_attrs = qla4xxx_host_attrs,
afaf5a2d
DS		 134};
135
136static struct iscsi_transport qla4xxx_iscsi_transport = {
137 .owner = THIS_MODULE,
138 .name = DRIVER_NAME,
d8196ed2
MC		 139 .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD |
140 CAP_DATA_PATH_OFFLOAD,
afaf5a2d 141 .tgt_dscvr = qla4xxx_tgt_dscvr,
3128c6c7 142 .attr_is_visible = ql4_attr_is_visible,
afaf5a2d
DS		 143 .get_conn_param = qla4xxx_conn_get_param,
144 .get_session_param = qla4xxx_sess_get_param,
aa1e93a2 145 .get_host_param = qla4xxx_host_get_param,
d00efe3f 146 .set_iface_param = qla4xxx_iface_set_param,
afaf5a2d 147 .session_recovery_timedout = qla4xxx_recovery_timedout,
ed1086e0 148 .get_iface_param = qla4xxx_get_iface_param,
afaf5a2d
DS		 149};
150
151static struct scsi_transport_template *qla4xxx_scsi_transport;
152
3128c6c7
MC		 153static mode_t ql4_attr_is_visible(int param_type, int param)
154{
155 switch (param_type) {
f27fb2ef
MC		 156 case ISCSI_HOST_PARAM:
157 switch (param) {
158 case ISCSI_HOST_PARAM_HWADDRESS:
159 case ISCSI_HOST_PARAM_IPADDRESS:
160 case ISCSI_HOST_PARAM_INITIATOR_NAME:
161 return S_IRUGO;
162 default:
163 return 0;
164 }
3128c6c7
MC		 165 case ISCSI_PARAM:
166 switch (param) {
167 case ISCSI_PARAM_CONN_ADDRESS:
168 case ISCSI_PARAM_CONN_PORT:
1d063c17
MC		 169 case ISCSI_PARAM_TARGET_NAME:
170 case ISCSI_PARAM_TPGT:
171 case ISCSI_PARAM_TARGET_ALIAS:
3128c6c7
MC		 172 return S_IRUGO;
173 default:
174 return 0;
175 }
b78dbba0
MC		 176 case ISCSI_NET_PARAM:
177 switch (param) {
178 case ISCSI_NET_PARAM_IPV4_ADDR:
179 case ISCSI_NET_PARAM_IPV4_SUBNET:
180 case ISCSI_NET_PARAM_IPV4_GW:
181 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
182 case ISCSI_NET_PARAM_IFACE_ENABLE:
183 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
184 case ISCSI_NET_PARAM_IPV6_ADDR:
185 case ISCSI_NET_PARAM_IPV6_ROUTER:
186 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
187 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
6ac73e8c
VC		 188 case ISCSI_NET_PARAM_VLAN_ID:
189 case ISCSI_NET_PARAM_VLAN_PRIORITY:
190 case ISCSI_NET_PARAM_VLAN_ENABLED:
b78dbba0
MC		 191 return S_IRUGO;
192 default:
193 return 0;
194 }
3128c6c7
MC		 195 }
196
197 return 0;
198}
199
ed1086e0
VC		 200static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
201 enum iscsi_param_type param_type,
202 int param, char *buf)
203{
204 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
205 struct scsi_qla_host *ha = to_qla_host(shost);
206 int len = -ENOSYS;
207
208 if (param_type != ISCSI_NET_PARAM)
209 return -ENOSYS;
210
211 switch (param) {
212 case ISCSI_NET_PARAM_IPV4_ADDR:
213 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
214 break;
215 case ISCSI_NET_PARAM_IPV4_SUBNET:
216 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
217 break;
218 case ISCSI_NET_PARAM_IPV4_GW:
219 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
220 break;
221 case ISCSI_NET_PARAM_IFACE_ENABLE:
222 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
223 len = sprintf(buf, "%s\n",
224 (ha->ip_config.ipv4_options &
225 IPOPT_IPV4_PROTOCOL_ENABLE) ?
226 "enabled" : "disabled");
227 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
228 len = sprintf(buf, "%s\n",
229 (ha->ip_config.ipv6_options &
230 IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
231 "enabled" : "disabled");
232 break;
233 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
234 len = sprintf(buf, "%s\n",
235 (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
236 "dhcp" : "static");
237 break;
238 case ISCSI_NET_PARAM_IPV6_ADDR:
239 if (iface->iface_num == 0)
240 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
241 if (iface->iface_num == 1)
242 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
243 break;
244 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
245 len = sprintf(buf, "%pI6\n",
246 &ha->ip_config.ipv6_link_local_addr);
247 break;
248 case ISCSI_NET_PARAM_IPV6_ROUTER:
249 len = sprintf(buf, "%pI6\n",
250 &ha->ip_config.ipv6_default_router_addr);
251 break;
252 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
253 len = sprintf(buf, "%s\n",
254 (ha->ip_config.ipv6_addl_options &
255 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
256 "nd" : "static");
257 break;
258 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
259 len = sprintf(buf, "%s\n",
260 (ha->ip_config.ipv6_addl_options &
261 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
262 "auto" : "static");
263 break;
6ac73e8c
VC		 264 case ISCSI_NET_PARAM_VLAN_ID:
265 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
266 len = sprintf(buf, "%d\n",
267 (ha->ip_config.ipv4_vlan_tag &
268 ISCSI_MAX_VLAN_ID));
269 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
270 len = sprintf(buf, "%d\n",
271 (ha->ip_config.ipv6_vlan_tag &
272 ISCSI_MAX_VLAN_ID));
273 break;
274 case ISCSI_NET_PARAM_VLAN_PRIORITY:
275 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
276 len = sprintf(buf, "%d\n",
277 ((ha->ip_config.ipv4_vlan_tag >> 13) &
278 ISCSI_MAX_VLAN_PRIORITY));
279 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
280 len = sprintf(buf, "%d\n",
281 ((ha->ip_config.ipv6_vlan_tag >> 13) &
282 ISCSI_MAX_VLAN_PRIORITY));
283 break;
284 case ISCSI_NET_PARAM_VLAN_ENABLED:
285 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
286 len = sprintf(buf, "%s\n",
287 (ha->ip_config.ipv4_options &
288 IPOPT_VLAN_TAGGING_ENABLE) ?
289 "enabled" : "disabled");
290 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
291 len = sprintf(buf, "%s\n",
292 (ha->ip_config.ipv6_options &
293 IPV6_OPT_VLAN_TAGGING_ENABLE) ?
294 "enabled" : "disabled");
295 break;
ed1086e0
VC		 296 default:
297 len = -ENOSYS;
298 }
299
300 return len;
301}
302
5c656af7
MC		 303static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
304{
305 struct iscsi_cls_session *session;
306 struct ddb_entry *ddb_entry;
307
308 session = starget_to_session(scsi_target(sc->device));
309 ddb_entry = session->dd_data;
310
311 /* if we are not logged in then the LLD is going to clean up the cmd */
312 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
313 return BLK_EH_RESET_TIMER;
314 else
315 return BLK_EH_NOT_HANDLED;
316}
317
afaf5a2d
DS		 318static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session)
319{
320 struct ddb_entry *ddb_entry = session->dd_data;
321 struct scsi_qla_host *ha = ddb_entry->ha;
322
568d303b
MC		 323 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
324 atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
325
3013cea8 326 DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout "
568d303b
MC		 327 "of (%d) secs exhausted, marking device DEAD.\n",
328 ha->host_no, __func__, ddb_entry->fw_ddb_index,
3038727c 329 ddb_entry->sess->recovery_tmo));
568d303b 330 }
afaf5a2d
DS		 331}
332
aa1e93a2
MC		 333static int qla4xxx_host_get_param(struct Scsi_Host *shost,
334 enum iscsi_host_param param, char *buf)
335{
336 struct scsi_qla_host *ha = to_qla_host(shost);
337 int len;
338
339 switch (param) {
340 case ISCSI_HOST_PARAM_HWADDRESS:
7ffc49a6 341 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
8ad5781a 342 break;
22236961 343 case ISCSI_HOST_PARAM_IPADDRESS:
2bab08fc 344 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
22236961 345 break;
8ad5781a 346 case ISCSI_HOST_PARAM_INITIATOR_NAME:
22236961 347 len = sprintf(buf, "%s\n", ha->name_string);
aa1e93a2
MC		 348 break;
349 default:
350 return -ENOSYS;
351 }
352
353 return len;
354}
355
ed1086e0
VC		 356static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
357{
358 if (ha->iface_ipv4)
359 return;
360
361 /* IPv4 */
362 ha->iface_ipv4 = iscsi_create_iface(ha->host,
363 &qla4xxx_iscsi_transport,
364 ISCSI_IFACE_TYPE_IPV4, 0, 0);
365 if (!ha->iface_ipv4)
366 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
367 "iface0.\n");
368}
369
370static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
371{
372 if (!ha->iface_ipv6_0)
373 /* IPv6 iface-0 */
374 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
375 &qla4xxx_iscsi_transport,
376 ISCSI_IFACE_TYPE_IPV6, 0,
377 0);
378 if (!ha->iface_ipv6_0)
379 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
380 "iface0.\n");
381
382 if (!ha->iface_ipv6_1)
383 /* IPv6 iface-1 */
384 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
385 &qla4xxx_iscsi_transport,
386 ISCSI_IFACE_TYPE_IPV6, 1,
387 0);
388 if (!ha->iface_ipv6_1)
389 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
390 "iface1.\n");
391}
392
393static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
394{
395 if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
396 qla4xxx_create_ipv4_iface(ha);
397
398 if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
399 qla4xxx_create_ipv6_iface(ha);
400}
401
402static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
403{
404 if (ha->iface_ipv4) {
405 iscsi_destroy_iface(ha->iface_ipv4);
406 ha->iface_ipv4 = NULL;
407 }
408}
409
410static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
411{
412 if (ha->iface_ipv6_0) {
413 iscsi_destroy_iface(ha->iface_ipv6_0);
414 ha->iface_ipv6_0 = NULL;
415 }
416 if (ha->iface_ipv6_1) {
417 iscsi_destroy_iface(ha->iface_ipv6_1);
418 ha->iface_ipv6_1 = NULL;
419 }
420}
421
422static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
423{
424 qla4xxx_destroy_ipv4_iface(ha);
425 qla4xxx_destroy_ipv6_iface(ha);
426}
427
d00efe3f
MC		 428static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
429 struct iscsi_iface_param_info *iface_param,
430 struct addr_ctrl_blk *init_fw_cb)
431{
432 /*
433 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
434 * iface_num 1 is valid only for IPv6 Addr.
435 */
436 switch (iface_param->param) {
437 case ISCSI_NET_PARAM_IPV6_ADDR:
438 if (iface_param->iface_num & 0x1)
439 /* IPv6 Addr 1 */
440 memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
441 sizeof(init_fw_cb->ipv6_addr1));
442 else
443 /* IPv6 Addr 0 */
444 memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
445 sizeof(init_fw_cb->ipv6_addr0));
446 break;
447 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
448 if (iface_param->iface_num & 0x1)
449 break;
450 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
451 sizeof(init_fw_cb->ipv6_if_id));
452 break;
453 case ISCSI_NET_PARAM_IPV6_ROUTER:
454 if (iface_param->iface_num & 0x1)
455 break;
456 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
457 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
458 break;
459 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
460 /* Autocfg applies to even interface */
461 if (iface_param->iface_num & 0x1)
462 break;
463
464 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
465 init_fw_cb->ipv6_addtl_opts &=
466 cpu_to_le16(
467 ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
468 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
469 init_fw_cb->ipv6_addtl_opts |=
470 cpu_to_le16(
471 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
472 else
473 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
474 "IPv6 addr\n");
475 break;
476 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
477 /* Autocfg applies to even interface */
478 if (iface_param->iface_num & 0x1)
479 break;
480
481 if (iface_param->value[0] ==
482 ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
483 init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
484 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
485 else if (iface_param->value[0] ==
486 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
487 init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
488 ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
489 else
490 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
491 "IPv6 linklocal addr\n");
492 break;
493 case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
494 /* Autocfg applies to even interface */
495 if (iface_param->iface_num & 0x1)
496 break;
497
498 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
499 memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
500 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
501 break;
502 case ISCSI_NET_PARAM_IFACE_ENABLE:
ed1086e0 503 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
d00efe3f
MC		 504 init_fw_cb->ipv6_opts |=
505 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
ed1086e0
VC		 506 qla4xxx_create_ipv6_iface(ha);
507 } else {
d00efe3f
MC		 508 init_fw_cb->ipv6_opts &=
509 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
510 0xFFFF);
ed1086e0
VC		 511 qla4xxx_destroy_ipv6_iface(ha);
512 }
d00efe3f
MC		 513 break;
514 case ISCSI_NET_PARAM_VLAN_ID:
515 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
516 break;
6ac73e8c
VC		 517 init_fw_cb->ipv6_vlan_tag =
518 cpu_to_be16(*(uint16_t *)iface_param->value);
519 break;
520 case ISCSI_NET_PARAM_VLAN_ENABLED:
521 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
522 init_fw_cb->ipv6_opts |=
523 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
524 else
525 init_fw_cb->ipv6_opts &=
526 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
d00efe3f
MC		 527 break;
528 default:
529 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
530 iface_param->param);
531 break;
532 }
533}
534
535static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
536 struct iscsi_iface_param_info *iface_param,
537 struct addr_ctrl_blk *init_fw_cb)
538{
539 switch (iface_param->param) {
540 case ISCSI_NET_PARAM_IPV4_ADDR:
541 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
542 sizeof(init_fw_cb->ipv4_addr));
543 break;
544 case ISCSI_NET_PARAM_IPV4_SUBNET:
545 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
546 sizeof(init_fw_cb->ipv4_subnet));
547 break;
548 case ISCSI_NET_PARAM_IPV4_GW:
549 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
550 sizeof(init_fw_cb->ipv4_gw_addr));
551 break;
552 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
553 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
554 init_fw_cb->ipv4_tcp_opts |=
555 cpu_to_le16(TCPOPT_DHCP_ENABLE);
556 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
557 init_fw_cb->ipv4_tcp_opts &=
558 cpu_to_le16(~TCPOPT_DHCP_ENABLE);
559 else
560 ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
561 break;
562 case ISCSI_NET_PARAM_IFACE_ENABLE:
ed1086e0 563 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
d00efe3f 564 init_fw_cb->ipv4_ip_opts |=
2bab08fc 565 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
ed1086e0
VC		 566 qla4xxx_create_ipv4_iface(ha);
567 } else {
d00efe3f 568 init_fw_cb->ipv4_ip_opts &=
2bab08fc 569 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
d00efe3f 570 0xFFFF);
ed1086e0
VC		 571 qla4xxx_destroy_ipv4_iface(ha);
572 }
d00efe3f
MC		 573 break;
574 case ISCSI_NET_PARAM_VLAN_ID:
575 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
576 break;
6ac73e8c
VC		 577 init_fw_cb->ipv4_vlan_tag =
578 cpu_to_be16(*(uint16_t *)iface_param->value);
579 break;
580 case ISCSI_NET_PARAM_VLAN_ENABLED:
581 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
582 init_fw_cb->ipv4_ip_opts |=
583 cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
584 else
585 init_fw_cb->ipv4_ip_opts &=
586 cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
d00efe3f
MC		 587 break;
588 default:
589 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
590 iface_param->param);
591 break;
592 }
593}
594
595static void
596qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
597{
598 struct addr_ctrl_blk_def *acb;
599 acb = (struct addr_ctrl_blk_def *)init_fw_cb;
600 memset(acb->reserved1, 0, sizeof(acb->reserved1));
601 memset(acb->reserved2, 0, sizeof(acb->reserved2));
602 memset(acb->reserved3, 0, sizeof(acb->reserved3));
603 memset(acb->reserved4, 0, sizeof(acb->reserved4));
604 memset(acb->reserved5, 0, sizeof(acb->reserved5));
605 memset(acb->reserved6, 0, sizeof(acb->reserved6));
606 memset(acb->reserved7, 0, sizeof(acb->reserved7));
607 memset(acb->reserved8, 0, sizeof(acb->reserved8));
608 memset(acb->reserved9, 0, sizeof(acb->reserved9));
609 memset(acb->reserved10, 0, sizeof(acb->reserved10));
610 memset(acb->reserved11, 0, sizeof(acb->reserved11));
611 memset(acb->reserved12, 0, sizeof(acb->reserved12));
612 memset(acb->reserved13, 0, sizeof(acb->reserved13));
613 memset(acb->reserved14, 0, sizeof(acb->reserved14));
614 memset(acb->reserved15, 0, sizeof(acb->reserved15));
615}
616
617static int
618qla4xxx_iface_set_param(struct Scsi_Host *shost, char *data, int count)
619{
620 struct scsi_qla_host *ha = to_qla_host(shost);
621 int rval = 0;
622 struct iscsi_iface_param_info *iface_param = NULL;
623 struct addr_ctrl_blk *init_fw_cb = NULL;
624 dma_addr_t init_fw_cb_dma;
625 uint32_t mbox_cmd[MBOX_REG_COUNT];
626 uint32_t mbox_sts[MBOX_REG_COUNT];
627 uint32_t total_param_count;
628 uint32_t length;
629
630 init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
631 sizeof(struct addr_ctrl_blk),
632 &init_fw_cb_dma, GFP_KERNEL);
633 if (!init_fw_cb) {
634 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
635 __func__);
636 return -ENOMEM;
637 }
638
639 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
640 memset(&mbox_cmd, 0, sizeof(mbox_cmd));
641 memset(&mbox_sts, 0, sizeof(mbox_sts));
642
643 if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
644 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
645 rval = -EIO;
646 goto exit_init_fw_cb;
647 }
648
649 total_param_count = count;
650 iface_param = (struct iscsi_iface_param_info *)data;
651
652 for ( ; total_param_count != 0; total_param_count--) {
653 length = iface_param->len;
654
655 if (iface_param->param_type != ISCSI_NET_PARAM)
656 continue;
657
658 switch (iface_param->iface_type) {
659 case ISCSI_IFACE_TYPE_IPV4:
660 switch (iface_param->iface_num) {
661 case 0:
662 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
663 break;
664 default:
665 /* Cannot have more than one IPv4 interface */
666 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
667 "number = %d\n",
668 iface_param->iface_num);
669 break;
670 }
671 break;
672 case ISCSI_IFACE_TYPE_IPV6:
673 switch (iface_param->iface_num) {
674 case 0:
675 case 1:
676 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
677 break;
678 default:
679 /* Cannot have more than two IPv6 interface */
680 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
681 "number = %d\n",
682 iface_param->iface_num);
683 break;
684 }
685 break;
686 default:
687 ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
688 break;
689 }
690
691 iface_param = (struct iscsi_iface_param_info *)
692 ((uint8_t *)iface_param +
693 sizeof(struct iscsi_iface_param_info) + length);
694 }
695
696 init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
697
698 rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
699 sizeof(struct addr_ctrl_blk),
700 FLASH_OPT_RMW_COMMIT);
701 if (rval != QLA_SUCCESS) {
702 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
703 __func__);
704 rval = -EIO;
705 goto exit_init_fw_cb;
706 }
707
708 qla4xxx_disable_acb(ha);
709
710 qla4xxx_initcb_to_acb(init_fw_cb);
711
712 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
713 if (rval != QLA_SUCCESS) {
714 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
715 __func__);
716 rval = -EIO;
717 goto exit_init_fw_cb;
718 }
719
720 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
721 qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
722 init_fw_cb_dma);
723
724exit_init_fw_cb:
725 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
726 init_fw_cb, init_fw_cb_dma);
727
728 return rval;
729}
730
afaf5a2d
DS		 731static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
732 enum iscsi_param param, char *buf)
733{
734 struct ddb_entry *ddb_entry = sess->dd_data;
735 int len;
736
737 switch (param) {
738 case ISCSI_PARAM_TARGET_NAME:
739 len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
740 ddb_entry->iscsi_name);
741 break;
742 case ISCSI_PARAM_TPGT:
743 len = sprintf(buf, "%u\n", ddb_entry->tpgt);
744 break;
3b2bef1f
VC		 745 case ISCSI_PARAM_TARGET_ALIAS:
746 len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
747 ddb_entry->iscsi_alias);
748 break;
afaf5a2d
DS		 749 default:
750 return -ENOSYS;
751 }
752
753 return len;
754}
755
756static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
757 enum iscsi_param param, char *buf)
758{
759 struct iscsi_cls_session *session;
760 struct ddb_entry *ddb_entry;
761 int len;
762
763 session = iscsi_dev_to_session(conn->dev.parent);
764 ddb_entry = session->dd_data;
765
766 switch (param) {
767 case ISCSI_PARAM_CONN_PORT:
768 len = sprintf(buf, "%hu\n", ddb_entry->port);
769 break;
770 case ISCSI_PARAM_CONN_ADDRESS:
771 /* TODO: what are the ipv6 bits */
63779436 772 len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr);
afaf5a2d
DS		 773 break;
774 default:
775 return -ENOSYS;
776 }
777
778 return len;
779}
780
2174a04e
MC		 781static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost,
782 enum iscsi_tgt_dscvr type, uint32_t enable,
783 struct sockaddr *dst_addr)
afaf5a2d
DS		 784{
785 struct scsi_qla_host *ha;
afaf5a2d
DS		 786 struct sockaddr_in *addr;
787 struct sockaddr_in6 *addr6;
788 int ret = 0;
789
afaf5a2d
DS		 790 ha = (struct scsi_qla_host *) shost->hostdata;
791
792 switch (type) {
793 case ISCSI_TGT_DSCVR_SEND_TARGETS:
794 if (dst_addr->sa_family == AF_INET) {
795 addr = (struct sockaddr_in *)dst_addr;
796 if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr,
797 addr->sin_port) != QLA_SUCCESS)
798 ret = -EIO;
799 } else if (dst_addr->sa_family == AF_INET6) {
800 /*
801 * TODO: fix qla4xxx_send_tgts
802 */
803 addr6 = (struct sockaddr_in6 *)dst_addr;
804 if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr,
805 addr6->sin6_port) != QLA_SUCCESS)
806 ret = -EIO;
807 } else
808 ret = -ENOSYS;
809 break;
810 default:
811 ret = -ENOSYS;
812 }
afaf5a2d
DS		 813 return ret;
814}
815
816void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry)
817{
818 if (!ddb_entry->sess)
819 return;
820
821 if (ddb_entry->conn) {
26974789 822 atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
afaf5a2d
DS		 823 iscsi_remove_session(ddb_entry->sess);
824 }
825 iscsi_free_session(ddb_entry->sess);
826}
827
828int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
829{
830 int err;
831
3038727c 832 ddb_entry->sess->recovery_tmo = ql4xsess_recovery_tmo;
3013cea8 833
afaf5a2d
DS		 834 err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index);
835 if (err) {
836 DEBUG2(printk(KERN_ERR "Could not add session.\n"));
837 return err;
838 }
839
5d91e209 840 ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0);
afaf5a2d
DS		 841 if (!ddb_entry->conn) {
842 iscsi_remove_session(ddb_entry->sess);
843 DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
844 return -ENOMEM;
845 }
b635930d
MC		 846
847 /* finally ready to go */
848 iscsi_unblock_session(ddb_entry->sess);
afaf5a2d
DS		 849 return 0;
850}
851
852struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha)
853{
854 struct ddb_entry *ddb_entry;
855 struct iscsi_cls_session *sess;
856
5d91e209
MC		 857 sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport,
858 sizeof(struct ddb_entry));
afaf5a2d
DS		 859 if (!sess)
860 return NULL;
861
862 ddb_entry = sess->dd_data;
863 memset(ddb_entry, 0, sizeof(*ddb_entry));
864 ddb_entry->ha = ha;
865 ddb_entry->sess = sess;
866 return ddb_entry;
867}
868
024f801f
MC		 869static void qla4xxx_scan_start(struct Scsi_Host *shost)
870{
871 struct scsi_qla_host *ha = shost_priv(shost);
872 struct ddb_entry *ddb_entry, *ddbtemp;
873
874 /* finish setup of sessions that were already setup in firmware */
875 list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
876 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE)
877 qla4xxx_add_sess(ddb_entry);
878 }
879}
880
afaf5a2d
DS		 881/*
882 * Timer routines
883 */
884
885static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
886 unsigned long interval)
887{
888 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
889 __func__, ha->host->host_no));
890 init_timer(&ha->timer);
891 ha->timer.expires = jiffies + interval * HZ;
892 ha->timer.data = (unsigned long)ha;
893 ha->timer.function = (void (*)(unsigned long))func;
894 add_timer(&ha->timer);
895 ha->timer_active = 1;
896}
897
898static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
899{
900 del_timer_sync(&ha->timer);
901 ha->timer_active = 0;
902}
903
904/***
905 * qla4xxx_mark_device_missing - mark a device as missing.
906 * @ha: Pointer to host adapter structure.
907 * @ddb_entry: Pointer to device database entry
908 *
f4f5df23 909 * This routine marks a device missing and close connection.
afaf5a2d
DS		 910 **/
911void qla4xxx_mark_device_missing(struct scsi_qla_host *ha,
912 struct ddb_entry *ddb_entry)
913{
f4f5df23
VC		 914 if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) {
915 atomic_set(&ddb_entry->state, DDB_STATE_MISSING);
916 DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n",
917 ha->host_no, ddb_entry->fw_ddb_index));
918 } else
919 DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no,
920 ddb_entry->fw_ddb_index))
921
b635930d 922 iscsi_block_session(ddb_entry->sess);
e5bd7b54 923 iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED);
afaf5a2d
DS		 924}
925
f4f5df23
VC		 926/**
927 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
928 * @ha: Pointer to host adapter structure.
929 *
930 * This routine marks a device missing and resets the relogin retry count.
931 **/
932void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
933{
934 struct ddb_entry *ddb_entry, *ddbtemp;
935 list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
936 qla4xxx_mark_device_missing(ha, ddb_entry);
937 }
938}
939
afaf5a2d
DS		 940static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
941 struct ddb_entry *ddb_entry,
8f0722ca 942 struct scsi_cmnd *cmd)
afaf5a2d
DS		 943{
944 struct srb *srb;
945
946 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
947 if (!srb)
948 return srb;
949
09a0f719 950 kref_init(&srb->srb_ref);
afaf5a2d
DS		 951 srb->ha = ha;
952 srb->ddb = ddb_entry;
953 srb->cmd = cmd;
954 srb->flags = 0;
5369887a 955 CMD_SP(cmd) = (void *)srb;
afaf5a2d
DS		 956
957 return srb;
958}
959
960static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
961{
962 struct scsi_cmnd *cmd = srb->cmd;
963
964 if (srb->flags & SRB_DMA_VALID) {
5f7186c8 965 scsi_dma_unmap(cmd);
afaf5a2d
DS		 966 srb->flags &= ~SRB_DMA_VALID;
967 }
5369887a 968 CMD_SP(cmd) = NULL;
afaf5a2d
DS		 969}
970
09a0f719 971void qla4xxx_srb_compl(struct kref *ref)
afaf5a2d 972{
09a0f719 973 struct srb *srb = container_of(ref, struct srb, srb_ref);
afaf5a2d 974 struct scsi_cmnd *cmd = srb->cmd;
09a0f719 975 struct scsi_qla_host *ha = srb->ha;
afaf5a2d
DS		 976
977 qla4xxx_srb_free_dma(ha, srb);
978
979 mempool_free(srb, ha->srb_mempool);
980
981 cmd->scsi_done(cmd);
982}
983
984/**
985 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
8f0722ca 986 * @host: scsi host
afaf5a2d 987 * @cmd: Pointer to Linux's SCSI command structure
afaf5a2d
DS		 988 *
989 * Remarks:
990 * This routine is invoked by Linux to send a SCSI command to the driver.
991 * The mid-level driver tries to ensure that queuecommand never gets
992 * invoked concurrently with itself or the interrupt handler (although
993 * the interrupt handler may call this routine as part of request-
994 * completion handling). Unfortunely, it sometimes calls the scheduler
995 * in interrupt context which is a big NO! NO!.
996 **/
8f0722ca 997static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
afaf5a2d 998{
8f0722ca 999 struct scsi_qla_host *ha = to_qla_host(host);
afaf5a2d 1000 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7fb1921b 1001 struct iscsi_cls_session *sess = ddb_entry->sess;
afaf5a2d
DS		 1002 struct srb *srb;
1003 int rval;
1004
2232be0d
LC		 1005 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
1006 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
1007 cmd->result = DID_NO_CONNECT << 16;
1008 else
1009 cmd->result = DID_REQUEUE << 16;
1010 goto qc_fail_command;
1011 }
1012
7fb1921b
MC		 1013 if (!sess) {
1014 cmd->result = DID_IMM_RETRY << 16;
1015 goto qc_fail_command;
1016 }
1017
1018 rval = iscsi_session_chkready(sess);
1019 if (rval) {
1020 cmd->result = rval;
1021 goto qc_fail_command;
1022 }
1023
afaf5a2d
DS		 1024 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
1025 if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
1026 cmd->result = DID_NO_CONNECT << 16;
1027 goto qc_fail_command;
1028 }
c5e98e91 1029 return SCSI_MLQUEUE_TARGET_BUSY;
afaf5a2d
DS		 1030 }
1031
f4f5df23
VC		 1032 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
1033 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
1034 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
1035 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
1036 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
1037 !test_bit(AF_ONLINE, &ha->flags) ||
1038 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
477ffb9d
DS		 1039 goto qc_host_busy;
1040
8f0722ca 1041 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
afaf5a2d 1042 if (!srb)
8f0722ca 1043 goto qc_host_busy;
afaf5a2d
DS		 1044
1045 rval = qla4xxx_send_command_to_isp(ha, srb);
1046 if (rval != QLA_SUCCESS)
1047 goto qc_host_busy_free_sp;
1048
afaf5a2d
DS		 1049 return 0;
1050
1051qc_host_busy_free_sp:
1052 qla4xxx_srb_free_dma(ha, srb);
1053 mempool_free(srb, ha->srb_mempool);
1054
afaf5a2d
DS		 1055qc_host_busy:
1056 return SCSI_MLQUEUE_HOST_BUSY;
1057
1058qc_fail_command:
8f0722ca 1059 cmd->scsi_done(cmd);
afaf5a2d
DS		 1060
1061 return 0;
1062}
1063
1064/**
1065 * qla4xxx_mem_free - frees memory allocated to adapter
1066 * @ha: Pointer to host adapter structure.
1067 *
1068 * Frees memory previously allocated by qla4xxx_mem_alloc
1069 **/
1070static void qla4xxx_mem_free(struct scsi_qla_host *ha)
1071{
1072 if (ha->queues)
1073 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
1074 ha->queues_dma);
1075
1076 ha->queues_len = 0;
1077 ha->queues = NULL;
1078 ha->queues_dma = 0;
1079 ha->request_ring = NULL;
1080 ha->request_dma = 0;
1081 ha->response_ring = NULL;
1082 ha->response_dma = 0;
1083 ha->shadow_regs = NULL;
1084 ha->shadow_regs_dma = 0;
1085
1086 /* Free srb pool. */
1087 if (ha->srb_mempool)
1088 mempool_destroy(ha->srb_mempool);
1089
1090 ha->srb_mempool = NULL;
1091
1092 /* release io space registers */
f4f5df23
VC		 1093 if (is_qla8022(ha)) {
1094 if (ha->nx_pcibase)
1095 iounmap(
1096 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
f4f5df23 1097 } else if (ha->reg)
afaf5a2d
DS		 1098 iounmap(ha->reg);
1099 pci_release_regions(ha->pdev);
1100}
1101
1102/**
1103 * qla4xxx_mem_alloc - allocates memory for use by adapter.
1104 * @ha: Pointer to host adapter structure
1105 *
1106 * Allocates DMA memory for request and response queues. Also allocates memory
1107 * for srbs.
1108 **/
1109static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
1110{
1111 unsigned long align;
1112
1113 /* Allocate contiguous block of DMA memory for queues. */
1114 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
1115 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
1116 sizeof(struct shadow_regs) +
1117 MEM_ALIGN_VALUE +
1118 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
1119 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
1120 &ha->queues_dma, GFP_KERNEL);
1121 if (ha->queues == NULL) {
c2660df3
VC		 1122 ql4_printk(KERN_WARNING, ha,
1123 "Memory Allocation failed - queues.\n");
afaf5a2d
DS		 1124
1125 goto mem_alloc_error_exit;
1126 }
1127 memset(ha->queues, 0, ha->queues_len);
1128
1129 /*
1130 * As per RISC alignment requirements -- the bus-address must be a
1131 * multiple of the request-ring size (in bytes).
1132 */
1133 align = 0;
1134 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
1135 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
1136 (MEM_ALIGN_VALUE - 1));
1137
1138 /* Update request and response queue pointers. */
1139 ha->request_dma = ha->queues_dma + align;
1140 ha->request_ring = (struct queue_entry *) (ha->queues + align);
1141 ha->response_dma = ha->queues_dma + align +
1142 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
1143 ha->response_ring = (struct queue_entry *) (ha->queues + align +
1144 (REQUEST_QUEUE_DEPTH *
1145 QUEUE_SIZE));
1146 ha->shadow_regs_dma = ha->queues_dma + align +
1147 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
1148 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
1149 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
1150 (REQUEST_QUEUE_DEPTH *
1151 QUEUE_SIZE) +
1152 (RESPONSE_QUEUE_DEPTH *
1153 QUEUE_SIZE));
1154
1155 /* Allocate memory for srb pool. */
1156 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
1157 mempool_free_slab, srb_cachep);
1158 if (ha->srb_mempool == NULL) {
c2660df3
VC		 1159 ql4_printk(KERN_WARNING, ha,
1160 "Memory Allocation failed - SRB Pool.\n");
afaf5a2d
DS		 1161
1162 goto mem_alloc_error_exit;
1163 }
1164
1165 return QLA_SUCCESS;
1166
1167mem_alloc_error_exit:
1168 qla4xxx_mem_free(ha);
1169 return QLA_ERROR;
1170}
1171
f4f5df23
VC		 1172/**
1173 * qla4_8xxx_check_fw_alive - Check firmware health
1174 * @ha: Pointer to host adapter structure.
1175 *
1176 * Context: Interrupt
1177 **/
1178static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
1179{
1180 uint32_t fw_heartbeat_counter, halt_status;
1181
1182 fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
2232be0d
LC		 1183 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
1184 if (fw_heartbeat_counter == 0xffffffff) {
1185 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
1186 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
1187 ha->host_no, __func__));
1188 return;
1189 }
f4f5df23
VC		 1190
1191 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
1192 ha->seconds_since_last_heartbeat++;
1193 /* FW not alive after 2 seconds */
1194 if (ha->seconds_since_last_heartbeat == 2) {
1195 ha->seconds_since_last_heartbeat = 0;
1196 halt_status = qla4_8xxx_rd_32(ha,
68d92ebf
VC		 1197 QLA82XX_PEG_HALT_STATUS1);
1198
1199 ql4_printk(KERN_INFO, ha,
1200 "scsi(%ld): %s, Dumping hw/fw registers:\n "
1201 " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
1202 " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
1203 " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
1204 " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
1205 ha->host_no, __func__, halt_status,
1206 qla4_8xxx_rd_32(ha,
1207 QLA82XX_PEG_HALT_STATUS2),
1208 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
1209 0x3c),
1210 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
1211 0x3c),
1212 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
1213 0x3c),
1214 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
1215 0x3c),
1216 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
1217 0x3c));
21033639 1218
f4f5df23
VC		 1219 /* Since we cannot change dev_state in interrupt
1220 * context, set appropriate DPC flag then wakeup
1221 * DPC */
1222 if (halt_status & HALT_STATUS_UNRECOVERABLE)
1223 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
1224 else {
1225 printk("scsi%ld: %s: detect abort needed!\n",
1226 ha->host_no, __func__);
1227 set_bit(DPC_RESET_HA, &ha->dpc_flags);
1228 }
1229 qla4xxx_wake_dpc(ha);
21033639 1230 qla4xxx_mailbox_premature_completion(ha);
f4f5df23 1231 }
99457d75
LC		 1232 } else
1233 ha->seconds_since_last_heartbeat = 0;
1234
f4f5df23
VC		 1235 ha->fw_heartbeat_counter = fw_heartbeat_counter;
1236}
1237
1238/**
1239 * qla4_8xxx_watchdog - Poll dev state
1240 * @ha: Pointer to host adapter structure.
1241 *
1242 * Context: Interrupt
1243 **/
1244void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
1245{
1246 uint32_t dev_state;
1247
1248 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
1249
1250 /* don't poll if reset is going on */
d56a1f7b
LC		 1251 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
1252 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
977f46a4 1253 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
f4f5df23
VC		 1254 if (dev_state == QLA82XX_DEV_NEED_RESET &&
1255 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
3930b8c1
VC		 1256 if (!ql4xdontresethba) {
1257 ql4_printk(KERN_INFO, ha, "%s: HW State: "
1258 "NEED RESET!\n", __func__);
1259 set_bit(DPC_RESET_HA, &ha->dpc_flags);
1260 qla4xxx_wake_dpc(ha);
1261 qla4xxx_mailbox_premature_completion(ha);
1262 }
f4f5df23
VC		 1263 } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
1264 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3930b8c1
VC		 1265 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
1266 __func__);
f4f5df23
VC		 1267 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
1268 qla4xxx_wake_dpc(ha);
1269 } else {
1270 /* Check firmware health */
1271 qla4_8xxx_check_fw_alive(ha);
1272 }
1273 }
1274}
1275
afaf5a2d
DS		 1276/**
1277 * qla4xxx_timer - checks every second for work to do.
1278 * @ha: Pointer to host adapter structure.
1279 **/
1280static void qla4xxx_timer(struct scsi_qla_host *ha)
1281{
1282 struct ddb_entry *ddb_entry, *dtemp;
1283 int start_dpc = 0;
2232be0d
LC		 1284 uint16_t w;
1285
1286 /* If we are in the middle of AER/EEH processing
1287 * skip any processing and reschedule the timer
1288 */
1289 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
1290 mod_timer(&ha->timer, jiffies + HZ);
1291 return;
1292 }
1293
1294 /* Hardware read to trigger an EEH error during mailbox waits. */
1295 if (!pci_channel_offline(ha->pdev))
1296 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
afaf5a2d 1297
f4f5df23
VC		 1298 if (is_qla8022(ha)) {
1299 qla4_8xxx_watchdog(ha);
1300 }
1301
afaf5a2d
DS		 1302 /* Search for relogin's to time-out and port down retry. */
1303 list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
1304 /* Count down time between sending relogins */
1305 if (adapter_up(ha) &&
1306 !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1307 atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
1308 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
1309 INVALID_ENTRY) {
1310 if (atomic_read(&ddb_entry->retry_relogin_timer)
1311 == 0) {
1312 atomic_set(&ddb_entry->
1313 retry_relogin_timer,
1314 INVALID_ENTRY);
1315 set_bit(DPC_RELOGIN_DEVICE,
1316 &ha->dpc_flags);
1317 set_bit(DF_RELOGIN, &ddb_entry->flags);
f4f5df23 1318 DEBUG2(printk("scsi%ld: %s: ddb [%d]"
afaf5a2d
DS		 1319 " login device\n",
1320 ha->host_no, __func__,
1321 ddb_entry->fw_ddb_index));
1322 } else
1323 atomic_dec(&ddb_entry->
1324 retry_relogin_timer);
1325 }
1326 }
1327
1328 /* Wait for relogin to timeout */
1329 if (atomic_read(&ddb_entry->relogin_timer) &&
1330 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
1331 /*
1332 * If the relogin times out and the device is
1333 * still NOT ONLINE then try and relogin again.
1334 */
1335 if (atomic_read(&ddb_entry->state) !=
1336 DDB_STATE_ONLINE &&
1337 ddb_entry->fw_ddb_device_state ==
1338 DDB_DS_SESSION_FAILED) {
1339 /* Reset retry relogin timer */
1340 atomic_inc(&ddb_entry->relogin_retry_count);
f4f5df23 1341 DEBUG2(printk("scsi%ld: ddb [%d] relogin"
afaf5a2d
DS		 1342 " timed out-retrying"
1343 " relogin (%d)\n",
1344 ha->host_no,
1345 ddb_entry->fw_ddb_index,
1346 atomic_read(&ddb_entry->
1347 relogin_retry_count))
1348 );
1349 start_dpc++;
f4f5df23 1350 DEBUG(printk("scsi%ld:%d:%d: ddb [%d] "
cd09b2c3 1351 "initiate relogin after"
afaf5a2d
DS		 1352 " %d seconds\n",
1353 ha->host_no, ddb_entry->bus,
1354 ddb_entry->target,
1355 ddb_entry->fw_ddb_index,
1356 ddb_entry->default_time2wait + 4)
1357 );
1358
1359 atomic_set(&ddb_entry->retry_relogin_timer,
1360 ddb_entry->default_time2wait + 4);
1361 }
1362 }
1363 }
1364
f4f5df23
VC		 1365 if (!is_qla8022(ha)) {
1366 /* Check for heartbeat interval. */
1367 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
1368 ha->heartbeat_interval != 0) {
1369 ha->seconds_since_last_heartbeat++;
1370 if (ha->seconds_since_last_heartbeat >
1371 ha->heartbeat_interval + 2)
1372 set_bit(DPC_RESET_HA, &ha->dpc_flags);
1373 }
afaf5a2d
DS		 1374 }
1375
afaf5a2d 1376 /* Wakeup the dpc routine for this adapter, if needed. */
1b46807e 1377 if (start_dpc ||
afaf5a2d
DS		 1378 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
1379 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
1380 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
f4f5df23 1381 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
afaf5a2d
DS		 1382 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
1383 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
065aa1b4 1384 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
f4f5df23
VC		 1385 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
1386 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
1b46807e 1387 test_bit(DPC_AEN, &ha->dpc_flags)) {
afaf5a2d
DS		 1388 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
1389 " - dpc flags = 0x%lx\n",
1390 ha->host_no, __func__, ha->dpc_flags));
f4f5df23 1391 qla4xxx_wake_dpc(ha);
afaf5a2d
DS		 1392 }
1393
1394 /* Reschedule timer thread to call us back in one second */
1395 mod_timer(&ha->timer, jiffies + HZ);
1396
1397 DEBUG2(ha->seconds_since_last_intr++);
1398}
1399
1400/**
1401 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
1402 * @ha: Pointer to host adapter structure.
1403 *
1404 * This routine stalls the driver until all outstanding commands are returned.
1405 * Caller must release the Hardware Lock prior to calling this routine.
1406 **/
1407static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
1408{
1409 uint32_t index = 0;
afaf5a2d
DS		 1410 unsigned long flags;
1411 struct scsi_cmnd *cmd;
afaf5a2d 1412
f4f5df23
VC		 1413 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
1414
1415 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
1416 "complete\n", WAIT_CMD_TOV));
1417
1418 while (!time_after_eq(jiffies, wtime)) {
afaf5a2d
DS		 1419 spin_lock_irqsave(&ha->hardware_lock, flags);
1420 /* Find a command that hasn't completed. */
1421 for (index = 0; index < ha->host->can_queue; index++) {
1422 cmd = scsi_host_find_tag(ha->host, index);
a1e0063d
MC		 1423 /*
1424 * We cannot just check if the index is valid,
1425 * becase if we are run from the scsi eh, then
1426 * the scsi/block layer is going to prevent
1427 * the tag from being released.
1428 */
1429 if (cmd != NULL && CMD_SP(cmd))
afaf5a2d
DS		 1430 break;
1431 }
1432 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1433
1434 /* If No Commands are pending, wait is complete */
f4f5df23
VC		 1435 if (index == ha->host->can_queue)
1436 return QLA_SUCCESS;
afaf5a2d 1437
f4f5df23
VC		 1438 msleep(1000);
1439 }
1440 /* If we timed out on waiting for commands to come back
1441 * return ERROR. */
1442 return QLA_ERROR;
afaf5a2d
DS		 1443}
1444
f4f5df23 1445int qla4xxx_hw_reset(struct scsi_qla_host *ha)
afaf5a2d 1446{
afaf5a2d 1447 uint32_t ctrl_status;
477ffb9d
DS		 1448 unsigned long flags = 0;
1449
1450 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
afaf5a2d 1451
f4f5df23
VC		 1452 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1453 return QLA_ERROR;
1454
afaf5a2d
DS		 1455 spin_lock_irqsave(&ha->hardware_lock, flags);
1456
1457 /*
1458 * If the SCSI Reset Interrupt bit is set, clear it.
1459 * Otherwise, the Soft Reset won't work.
1460 */
1461 ctrl_status = readw(&ha->reg->ctrl_status);
1462 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
1463 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
1464
1465 /* Issue Soft Reset */
1466 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
1467 readl(&ha->reg->ctrl_status);
1468
1469 spin_unlock_irqrestore(&ha->hardware_lock, flags);
f4f5df23 1470 return QLA_SUCCESS;
477ffb9d
DS		 1471}
1472
1473/**
1474 * qla4xxx_soft_reset - performs soft reset.
1475 * @ha: Pointer to host adapter structure.
1476 **/
1477int qla4xxx_soft_reset(struct scsi_qla_host *ha)
1478{
1479 uint32_t max_wait_time;
1480 unsigned long flags = 0;
f931c534 1481 int status;
477ffb9d
DS		 1482 uint32_t ctrl_status;
1483
f931c534
VC		 1484 status = qla4xxx_hw_reset(ha);
1485 if (status != QLA_SUCCESS)
1486 return status;
afaf5a2d 1487
f931c534 1488 status = QLA_ERROR;
afaf5a2d
DS		 1489 /* Wait until the Network Reset Intr bit is cleared */
1490 max_wait_time = RESET_INTR_TOV;
1491 do {
1492 spin_lock_irqsave(&ha->hardware_lock, flags);
1493 ctrl_status = readw(&ha->reg->ctrl_status);
1494 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1495
1496 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
1497 break;
1498
1499 msleep(1000);
1500 } while ((--max_wait_time));
1501
1502 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
1503 DEBUG2(printk(KERN_WARNING
1504 "scsi%ld: Network Reset Intr not cleared by "
1505 "Network function, clearing it now!\n",
1506 ha->host_no));
1507 spin_lock_irqsave(&ha->hardware_lock, flags);
1508 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
1509 readl(&ha->reg->ctrl_status);
1510 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1511 }
1512
1513 /* Wait until the firmware tells us the Soft Reset is done */
1514 max_wait_time = SOFT_RESET_TOV;
1515 do {
1516 spin_lock_irqsave(&ha->hardware_lock, flags);
1517 ctrl_status = readw(&ha->reg->ctrl_status);
1518 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1519
1520 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
1521 status = QLA_SUCCESS;
1522 break;
1523 }
1524
1525 msleep(1000);
1526 } while ((--max_wait_time));
1527
1528 /*
1529 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
1530 * after the soft reset has taken place.
1531 */
1532 spin_lock_irqsave(&ha->hardware_lock, flags);
1533 ctrl_status = readw(&ha->reg->ctrl_status);
1534 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
1535 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
1536 readl(&ha->reg->ctrl_status);
1537 }
1538 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1539
1540 /* If soft reset fails then most probably the bios on other
1541 * function is also enabled.
1542 * Since the initialization is sequential the other fn
1543 * wont be able to acknowledge the soft reset.
1544 * Issue a force soft reset to workaround this scenario.
1545 */
1546 if (max_wait_time == 0) {
1547 /* Issue Force Soft Reset */
1548 spin_lock_irqsave(&ha->hardware_lock, flags);
1549 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
1550 readl(&ha->reg->ctrl_status);
1551 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1552 /* Wait until the firmware tells us the Soft Reset is done */
1553 max_wait_time = SOFT_RESET_TOV;
1554 do {
1555 spin_lock_irqsave(&ha->hardware_lock, flags);
1556 ctrl_status = readw(&ha->reg->ctrl_status);
1557 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1558
1559 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
1560 status = QLA_SUCCESS;
1561 break;
1562 }
1563
1564 msleep(1000);
1565 } while ((--max_wait_time));
1566 }
1567
1568 return status;
1569}
1570
afaf5a2d 1571/**
f4f5df23 1572 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
afaf5a2d 1573 * @ha: Pointer to host adapter structure.
f4f5df23 1574 * @res: returned scsi status
afaf5a2d
DS		 1575 *
1576 * This routine is called just prior to a HARD RESET to return all
1577 * outstanding commands back to the Operating System.
1578 * Caller should make sure that the following locks are released
1579 * before this calling routine: Hardware lock, and io_request_lock.
1580 **/
f4f5df23 1581static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
afaf5a2d
DS		 1582{
1583 struct srb *srb;
1584 int i;
1585 unsigned long flags;
1586
1587 spin_lock_irqsave(&ha->hardware_lock, flags);
1588 for (i = 0; i < ha->host->can_queue; i++) {
1589 srb = qla4xxx_del_from_active_array(ha, i);
1590 if (srb != NULL) {
f4f5df23 1591 srb->cmd->result = res;
09a0f719 1592 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
afaf5a2d
DS		 1593 }
1594 }
1595 spin_unlock_irqrestore(&ha->hardware_lock, flags);
afaf5a2d
DS		 1596}
1597
f4f5df23
VC		 1598void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
1599{
1600 clear_bit(AF_ONLINE, &ha->flags);
1601
1602 /* Disable the board */
1603 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
f4f5df23
VC		 1604
1605 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
1606 qla4xxx_mark_all_devices_missing(ha);
1607 clear_bit(AF_INIT_DONE, &ha->flags);
1608}
1609
afaf5a2d
DS		 1610/**
1611 * qla4xxx_recover_adapter - recovers adapter after a fatal error
1612 * @ha: Pointer to host adapter structure.
afaf5a2d 1613 **/
f4f5df23 1614static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
afaf5a2d 1615{
f4f5df23
VC		 1616 int status = QLA_ERROR;
1617 uint8_t reset_chip = 0;
afaf5a2d
DS		 1618
1619 /* Stall incoming I/O until we are done */
f4f5df23 1620 scsi_block_requests(ha->host);
afaf5a2d 1621 clear_bit(AF_ONLINE, &ha->flags);
50a29aec 1622
f4f5df23 1623 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
afaf5a2d 1624
f4f5df23 1625 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
afaf5a2d 1626
f4f5df23
VC		 1627 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
1628 reset_chip = 1;
afaf5a2d 1629
f4f5df23
VC		 1630 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
1631 * do not reset adapter, jump to initialize_adapter */
1632 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
1633 status = QLA_SUCCESS;
1634 goto recover_ha_init_adapter;
1635 }
afaf5a2d 1636
f4f5df23
VC		 1637 /* For the ISP-82xx adapter, issue a stop_firmware if invoked
1638 * from eh_host_reset or ioctl module */
1639 if (is_qla8022(ha) && !reset_chip &&
1640 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
1641
1642 DEBUG2(ql4_printk(KERN_INFO, ha,
1643 "scsi%ld: %s - Performing stop_firmware...\n",
1644 ha->host_no, __func__));
1645 status = ha->isp_ops->reset_firmware(ha);
1646 if (status == QLA_SUCCESS) {
2bd1e2be
NJ		 1647 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
1648 qla4xxx_cmd_wait(ha);
f4f5df23
VC		 1649 ha->isp_ops->disable_intrs(ha);
1650 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
1651 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
1652 } else {
1653 /* If the stop_firmware fails then
1654 * reset the entire chip */
1655 reset_chip = 1;
1656 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
1657 set_bit(DPC_RESET_HA, &ha->dpc_flags);
1658 }
1659 }
dca05c4c 1660
f4f5df23
VC		 1661 /* Issue full chip reset if recovering from a catastrophic error,
1662 * or if stop_firmware fails for ISP-82xx.
1663 * This is the default case for ISP-4xxx */
1664 if (!is_qla8022(ha) || reset_chip) {
2bd1e2be
NJ		 1665 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
1666 qla4xxx_cmd_wait(ha);
f4f5df23
VC		 1667 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
1668 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
1669 DEBUG2(ql4_printk(KERN_INFO, ha,
1670 "scsi%ld: %s - Performing chip reset..\n",
1671 ha->host_no, __func__));
1672 status = ha->isp_ops->reset_chip(ha);
1673 }
afaf5a2d
DS		 1674
1675 /* Flush any pending ddb changed AENs */
1676 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
1677
f4f5df23
VC		 1678recover_ha_init_adapter:
1679 /* Upon successful firmware/chip reset, re-initialize the adapter */
afaf5a2d 1680 if (status == QLA_SUCCESS) {
f4f5df23
VC		 1681 /* For ISP-4xxx, force function 1 to always initialize
1682 * before function 3 to prevent both funcions from
1683 * stepping on top of the other */
1684 if (!is_qla8022(ha) && (ha->mac_index == 3))
1685 ssleep(6);
1686
1687 /* NOTE: AF_ONLINE flag set upon successful completion of
1688 * qla4xxx_initialize_adapter */
1689 status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
afaf5a2d
DS		 1690 }
1691
f4f5df23
VC		 1692 /* Retry failed adapter initialization, if necessary
1693 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
1694 * case to prevent ping-pong resets between functions */
1695 if (!test_bit(AF_ONLINE, &ha->flags) &&
1696 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
afaf5a2d 1697 /* Adapter initialization failed, see if we can retry
f4f5df23
VC		 1698 * resetting the ha.
1699 * Since we don't want to block the DPC for too long
1700 * with multiple resets in the same thread,
1701 * utilize DPC to retry */
afaf5a2d
DS		 1702 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
1703 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
1704 DEBUG2(printk("scsi%ld: recover adapter - retrying "
1705 "(%d) more times\n", ha->host_no,
1706 ha->retry_reset_ha_cnt));
1707 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
1708 status = QLA_ERROR;
1709 } else {
1710 if (ha->retry_reset_ha_cnt > 0) {
1711 /* Schedule another Reset HA--DPC will retry */
1712 ha->retry_reset_ha_cnt--;
1713 DEBUG2(printk("scsi%ld: recover adapter - "
1714 "retry remaining %d\n",
1715 ha->host_no,
1716 ha->retry_reset_ha_cnt));
1717 status = QLA_ERROR;
1718 }
1719
1720 if (ha->retry_reset_ha_cnt == 0) {
1721 /* Recover adapter retries have been exhausted.
1722 * Adapter DEAD */
1723 DEBUG2(printk("scsi%ld: recover adapter "
1724 "failed - board disabled\n",
1725 ha->host_no));
f4f5df23 1726 qla4xxx_dead_adapter_cleanup(ha);
afaf5a2d
DS		 1727 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
1728 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
f4f5df23 1729 clear_bit(DPC_RESET_HA_FW_CONTEXT,
afaf5a2d
DS		 1730 &ha->dpc_flags);
1731 status = QLA_ERROR;
1732 }
1733 }
1734 } else {
1735 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
f4f5df23 1736 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
afaf5a2d
DS		 1737 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
1738 }
1739
1740 ha->adapter_error_count++;
1741
f4f5df23
VC		 1742 if (test_bit(AF_ONLINE, &ha->flags))
1743 ha->isp_ops->enable_intrs(ha);
1744
1745 scsi_unblock_requests(ha->host);
1746
1747 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
1748 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
25985edc 1749 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
afaf5a2d 1750
afaf5a2d
DS		 1751 return status;
1752}
1753
2d7924e6
VC		 1754static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
1755{
1756 struct ddb_entry *ddb_entry, *dtemp;
1757
1758 list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
1759 if ((atomic_read(&ddb_entry->state) == DDB_STATE_MISSING) ||
1760 (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD)) {
1761 if (ddb_entry->fw_ddb_device_state ==
1762 DDB_DS_SESSION_ACTIVE) {
1763 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1764 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
1765 " marked ONLINE\n", ha->host_no, __func__,
1766 ddb_entry->fw_ddb_index);
1767
1768 iscsi_unblock_session(ddb_entry->sess);
1769 } else
1770 qla4xxx_relogin_device(ha, ddb_entry);
1771 }
1772 }
1773}
1774
f4f5df23
VC		 1775void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
1776{
1b46807e 1777 if (ha->dpc_thread)
f4f5df23 1778 queue_work(ha->dpc_thread, &ha->dpc_work);
f4f5df23
VC		 1779}
1780
afaf5a2d
DS		 1781/**
1782 * qla4xxx_do_dpc - dpc routine
1783 * @data: in our case pointer to adapter structure
1784 *
1785 * This routine is a task that is schedule by the interrupt handler
1786 * to perform the background processing for interrupts. We put it
1787 * on a task queue that is consumed whenever the scheduler runs; that's
1788 * so you can do anything (i.e. put the process to sleep etc). In fact,
1789 * the mid-level tries to sleep when it reaches the driver threshold
1790 * "host->can_queue". This can cause a panic if we were in our interrupt code.
1791 **/
c4028958 1792static void qla4xxx_do_dpc(struct work_struct *work)
afaf5a2d 1793{
c4028958
DH		 1794 struct scsi_qla_host *ha =
1795 container_of(work, struct scsi_qla_host, dpc_work);
afaf5a2d 1796 struct ddb_entry *ddb_entry, *dtemp;
477ffb9d 1797 int status = QLA_ERROR;
afaf5a2d 1798
f26b9044 1799 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
f4f5df23
VC		 1800 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
1801 ha->host_no, __func__, ha->flags, ha->dpc_flags))
afaf5a2d
DS		 1802
1803 /* Initialization not yet finished. Don't do anything yet. */
1804 if (!test_bit(AF_INIT_DONE, &ha->flags))
1b46807e 1805 return;
afaf5a2d 1806
2232be0d
LC		 1807 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
1808 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
1809 ha->host_no, __func__, ha->flags));
1b46807e 1810 return;
2232be0d
LC		 1811 }
1812
f4f5df23
VC		 1813 if (is_qla8022(ha)) {
1814 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
1815 qla4_8xxx_idc_lock(ha);
1816 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
1817 QLA82XX_DEV_FAILED);
1818 qla4_8xxx_idc_unlock(ha);
1819 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
1820 qla4_8xxx_device_state_handler(ha);
1821 }
1822 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
1823 qla4_8xxx_need_qsnt_handler(ha);
1824 }
1825 }
1826
1827 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
1828 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
afaf5a2d 1829 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
f4f5df23
VC		 1830 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
1831 if (ql4xdontresethba) {
1832 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
1833 ha->host_no, __func__));
1834 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
1835 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
1836 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
1837 goto dpc_post_reset_ha;
1838 }
1839 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
1840 test_bit(DPC_RESET_HA, &ha->dpc_flags))
1841 qla4xxx_recover_adapter(ha);
afaf5a2d 1842
477ffb9d 1843 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
afaf5a2d 1844 uint8_t wait_time = RESET_INTR_TOV;
afaf5a2d 1845
afaf5a2d
DS		 1846 while ((readw(&ha->reg->ctrl_status) &
1847 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
1848 if (--wait_time == 0)
1849 break;
afaf5a2d 1850 msleep(1000);
afaf5a2d 1851 }
afaf5a2d
DS		 1852 if (wait_time == 0)
1853 DEBUG2(printk("scsi%ld: %s: SR|FSR "
1854 "bit not cleared-- resetting\n",
1855 ha->host_no, __func__));
f4f5df23 1856 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
477ffb9d
DS		 1857 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
1858 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
f4f5df23 1859 status = qla4xxx_recover_adapter(ha);
477ffb9d
DS		 1860 }
1861 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
1862 if (status == QLA_SUCCESS)
f4f5df23 1863 ha->isp_ops->enable_intrs(ha);
afaf5a2d
DS		 1864 }
1865 }
1866
f4f5df23 1867dpc_post_reset_ha:
afaf5a2d
DS		 1868 /* ---- process AEN? --- */
1869 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
1870 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
1871
1872 /* ---- Get DHCP IP Address? --- */
1873 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
1874 qla4xxx_get_dhcp_ip_address(ha);
1875
065aa1b4
VC		 1876 /* ---- link change? --- */
1877 if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
1878 if (!test_bit(AF_LINK_UP, &ha->flags)) {
1879 /* ---- link down? --- */
2d7924e6 1880 qla4xxx_mark_all_devices_missing(ha);
065aa1b4
VC		 1881 } else {
1882 /* ---- link up? --- *
1883 * F/W will auto login to all devices ONLY ONCE after
1884 * link up during driver initialization and runtime
1885 * fatal error recovery. Therefore, the driver must
1886 * manually relogin to devices when recovering from
1887 * connection failures, logouts, expired KATO, etc. */
1888
2d7924e6 1889 qla4xxx_relogin_all_devices(ha);
065aa1b4
VC		 1890 }
1891 }
1892
afaf5a2d
DS		 1893 /* ---- relogin device? --- */
1894 if (adapter_up(ha) &&
1895 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
1896 list_for_each_entry_safe(ddb_entry, dtemp,
1897 &ha->ddb_list, list) {
1898 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
1899 atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
1900 qla4xxx_relogin_device(ha, ddb_entry);
1901
1902 /*
1903 * If mbx cmd times out there is no point
1904 * in continuing further.
1905 * With large no of targets this can hang
1906 * the system.
1907 */
1908 if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
1909 printk(KERN_WARNING "scsi%ld: %s: "
1910 "need to reset hba\n",
1911 ha->host_no, __func__);
1912 break;
1913 }
1914 }
1915 }
0753b487 1916
afaf5a2d
DS		 1917}
1918
1919/**
1920 * qla4xxx_free_adapter - release the adapter
1921 * @ha: pointer to adapter structure
1922 **/
1923static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
1924{
1925
1926 if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
1927 /* Turn-off interrupts on the card. */
f4f5df23 1928 ha->isp_ops->disable_intrs(ha);
afaf5a2d
DS		 1929 }
1930
f4f5df23
VC		 1931 /* Remove timer thread, if present */
1932 if (ha->timer_active)
1933 qla4xxx_stop_timer(ha);
1934
afaf5a2d
DS		 1935 /* Kill the kernel thread for this host */
1936 if (ha->dpc_thread)
1937 destroy_workqueue(ha->dpc_thread);
1938
f4f5df23
VC		 1939 /* Put firmware in known state */
1940 ha->isp_ops->reset_firmware(ha);
afaf5a2d 1941
f4f5df23
VC		 1942 if (is_qla8022(ha)) {
1943 qla4_8xxx_idc_lock(ha);
1944 qla4_8xxx_clear_drv_active(ha);
1945 qla4_8xxx_idc_unlock(ha);
1946 }
afaf5a2d 1947
afaf5a2d
DS		 1948 /* Detach interrupts */
1949 if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
f4f5df23 1950 qla4xxx_free_irqs(ha);
afaf5a2d 1951
bee4fe8e
DS		 1952 /* free extra memory */
1953 qla4xxx_mem_free(ha);
f4f5df23
VC		 1954}
1955
1956int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
1957{
1958 int status = 0;
1959 uint8_t revision_id;
1960 unsigned long mem_base, mem_len, db_base, db_len;
1961 struct pci_dev *pdev = ha->pdev;
1962
1963 status = pci_request_regions(pdev, DRIVER_NAME);
1964 if (status) {
1965 printk(KERN_WARNING
1966 "scsi(%ld) Failed to reserve PIO regions (%s) "
1967 "status=%d\n", ha->host_no, pci_name(pdev), status);
1968 goto iospace_error_exit;
1969 }
1970
1971 pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id);
1972 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
1973 __func__, revision_id));
1974 ha->revision_id = revision_id;
bee4fe8e 1975
f4f5df23
VC		 1976 /* remap phys address */
1977 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
1978 mem_len = pci_resource_len(pdev, 0);
1979 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
1980 __func__, mem_base, mem_len));
afaf5a2d 1981
f4f5df23
VC		 1982 /* mapping of pcibase pointer */
1983 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
1984 if (!ha->nx_pcibase) {
1985 printk(KERN_ERR
1986 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
1987 pci_release_regions(ha->pdev);
1988 goto iospace_error_exit;
1989 }
1990
1991 /* Mapping of IO base pointer, door bell read and write pointer */
1992
1993 /* mapping of IO base pointer */
1994 ha->qla4_8xxx_reg =
1995 (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase +
1996 0xbc000 + (ha->pdev->devfn << 11));
1997
1998 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
1999 db_len = pci_resource_len(pdev, 4);
2000
2657c800
SS		 2001 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
2002 QLA82XX_CAM_RAM_DB2);
f4f5df23 2003
2657c800 2004 return 0;
f4f5df23
VC		 2005iospace_error_exit:
2006 return -ENOMEM;
afaf5a2d
DS		 2007}
2008
2009/***
2010 * qla4xxx_iospace_config - maps registers
2011 * @ha: pointer to adapter structure
2012 *
2013 * This routines maps HBA's registers from the pci address space
2014 * into the kernel virtual address space for memory mapped i/o.
2015 **/
f4f5df23 2016int qla4xxx_iospace_config(struct scsi_qla_host *ha)
afaf5a2d
DS		 2017{
2018 unsigned long pio, pio_len, pio_flags;
2019 unsigned long mmio, mmio_len, mmio_flags;
2020
2021 pio = pci_resource_start(ha->pdev, 0);
2022 pio_len = pci_resource_len(ha->pdev, 0);
2023 pio_flags = pci_resource_flags(ha->pdev, 0);
2024 if (pio_flags & IORESOURCE_IO) {
2025 if (pio_len < MIN_IOBASE_LEN) {
c2660df3 2026 ql4_printk(KERN_WARNING, ha,
afaf5a2d
DS		 2027 "Invalid PCI I/O region size\n");
2028 pio = 0;
2029 }
2030 } else {
c2660df3 2031 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
afaf5a2d
DS		 2032 pio = 0;
2033 }
2034
2035 /* Use MMIO operations for all accesses. */
2036 mmio = pci_resource_start(ha->pdev, 1);
2037 mmio_len = pci_resource_len(ha->pdev, 1);
2038 mmio_flags = pci_resource_flags(ha->pdev, 1);
2039
2040 if (!(mmio_flags & IORESOURCE_MEM)) {
c2660df3
VC		 2041 ql4_printk(KERN_ERR, ha,
2042 "region #0 not an MMIO resource, aborting\n");
afaf5a2d
DS		 2043
2044 goto iospace_error_exit;
2045 }
c2660df3 2046
afaf5a2d 2047 if (mmio_len < MIN_IOBASE_LEN) {
c2660df3
VC		 2048 ql4_printk(KERN_ERR, ha,
2049 "Invalid PCI mem region size, aborting\n");
afaf5a2d
DS		 2050 goto iospace_error_exit;
2051 }
2052
2053 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
c2660df3
VC		 2054 ql4_printk(KERN_WARNING, ha,
2055 "Failed to reserve PIO/MMIO regions\n");
afaf5a2d
DS		 2056
2057 goto iospace_error_exit;
2058 }
2059
2060 ha->pio_address = pio;
2061 ha->pio_length = pio_len;
2062 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
2063 if (!ha->reg) {
c2660df3
VC		 2064 ql4_printk(KERN_ERR, ha,
2065 "cannot remap MMIO, aborting\n");
afaf5a2d
DS		 2066
2067 goto iospace_error_exit;
2068 }
2069
2070 return 0;
2071
2072iospace_error_exit:
2073 return -ENOMEM;
2074}
2075
f4f5df23
VC		 2076static struct isp_operations qla4xxx_isp_ops = {
2077 .iospace_config = qla4xxx_iospace_config,
2078 .pci_config = qla4xxx_pci_config,
2079 .disable_intrs = qla4xxx_disable_intrs,
2080 .enable_intrs = qla4xxx_enable_intrs,
2081 .start_firmware = qla4xxx_start_firmware,
2082 .intr_handler = qla4xxx_intr_handler,
2083 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
2084 .reset_chip = qla4xxx_soft_reset,
2085 .reset_firmware = qla4xxx_hw_reset,
2086 .queue_iocb = qla4xxx_queue_iocb,
2087 .complete_iocb = qla4xxx_complete_iocb,
2088 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
2089 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
2090 .get_sys_info = qla4xxx_get_sys_info,
2091};
2092
2093static struct isp_operations qla4_8xxx_isp_ops = {
2094 .iospace_config = qla4_8xxx_iospace_config,
2095 .pci_config = qla4_8xxx_pci_config,
2096 .disable_intrs = qla4_8xxx_disable_intrs,
2097 .enable_intrs = qla4_8xxx_enable_intrs,
2098 .start_firmware = qla4_8xxx_load_risc,
2099 .intr_handler = qla4_8xxx_intr_handler,
2100 .interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
2101 .reset_chip = qla4_8xxx_isp_reset,
2102 .reset_firmware = qla4_8xxx_stop_firmware,
2103 .queue_iocb = qla4_8xxx_queue_iocb,
2104 .complete_iocb = qla4_8xxx_complete_iocb,
2105 .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out,
2106 .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in,
2107 .get_sys_info = qla4_8xxx_get_sys_info,
2108};
2109
2110uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
2111{
2112 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
2113}
2114
2115uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
2116{
2117 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
2118}
2119
2120uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
2121{
2122 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
2123}
2124
2125uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
2126{
2127 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
2128}
2129
afaf5a2d
DS		 2130/**
2131 * qla4xxx_probe_adapter - callback function to probe HBA
2132 * @pdev: pointer to pci_dev structure
2133 * @pci_device_id: pointer to pci_device entry
2134 *
2135 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
2136 * It returns zero if successful. It also initializes all data necessary for
2137 * the driver.
2138 **/
2139static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
2140 const struct pci_device_id *ent)
2141{
2142 int ret = -ENODEV, status;
2143 struct Scsi_Host *host;
2144 struct scsi_qla_host *ha;
afaf5a2d
DS		 2145 uint8_t init_retry_count = 0;
2146 char buf[34];
f4f5df23 2147 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
f9880e76 2148 uint32_t dev_state;
afaf5a2d
DS		 2149
2150 if (pci_enable_device(pdev))
2151 return -1;
2152
2153 host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha));
2154 if (host == NULL) {
2155 printk(KERN_WARNING
2156 "qla4xxx: Couldn't allocate host from scsi layer!\n");
2157 goto probe_disable_device;
2158 }
2159
2160 /* Clear our data area */
2161 ha = (struct scsi_qla_host *) host->hostdata;
2162 memset(ha, 0, sizeof(*ha));
2163
2164 /* Save the information from PCI BIOS. */
2165 ha->pdev = pdev;
2166 ha->host = host;
2167 ha->host_no = host->host_no;
2168
2232be0d
LC		 2169 pci_enable_pcie_error_reporting(pdev);
2170
f4f5df23
VC		 2171 /* Setup Runtime configurable options */
2172 if (is_qla8022(ha)) {
2173 ha->isp_ops = &qla4_8xxx_isp_ops;
2174 rwlock_init(&ha->hw_lock);
2175 ha->qdr_sn_window = -1;
2176 ha->ddr_mn_window = -1;
2177 ha->curr_window = 255;
2178 ha->func_num = PCI_FUNC(ha->pdev->devfn);
2179 nx_legacy_intr = &legacy_intr[ha->func_num];
2180 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
2181 ha->nx_legacy_intr.tgt_status_reg =
2182 nx_legacy_intr->tgt_status_reg;
2183 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
2184 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
2185 } else {
2186 ha->isp_ops = &qla4xxx_isp_ops;
2187 }
2188
2232be0d
LC		 2189 /* Set EEH reset type to fundamental if required by hba */
2190 if (is_qla8022(ha))
2191 pdev->needs_freset = 1;
2192
afaf5a2d 2193 /* Configure PCI I/O space. */
f4f5df23 2194 ret = ha->isp_ops->iospace_config(ha);
afaf5a2d 2195 if (ret)
f4f5df23 2196 goto probe_failed_ioconfig;
afaf5a2d 2197
c2660df3 2198 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
afaf5a2d
DS		 2199 pdev->device, pdev->irq, ha->reg);
2200
2201 qla4xxx_config_dma_addressing(ha);
2202
2203 /* Initialize lists and spinlocks. */
2204 INIT_LIST_HEAD(&ha->ddb_list);
2205 INIT_LIST_HEAD(&ha->free_srb_q);
2206
2207 mutex_init(&ha->mbox_sem);
f4f5df23 2208 init_completion(&ha->mbx_intr_comp);
afaf5a2d
DS		 2209
2210 spin_lock_init(&ha->hardware_lock);
afaf5a2d
DS		 2211
2212 /* Allocate dma buffers */
2213 if (qla4xxx_mem_alloc(ha)) {
c2660df3
VC		 2214 ql4_printk(KERN_WARNING, ha,
2215 "[ERROR] Failed to allocate memory for adapter\n");
afaf5a2d
DS		 2216
2217 ret = -ENOMEM;
2218 goto probe_failed;
2219 }
2220
f4f5df23
VC		 2221 if (is_qla8022(ha))
2222 (void) qla4_8xxx_get_flash_info(ha);
2223
afaf5a2d
DS		 2224 /*
2225 * Initialize the Host adapter request/response queues and
2226 * firmware
2227 * NOTE: interrupts enabled upon successful completion
2228 */
2229 status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
f4f5df23
VC		 2230 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
2231 init_retry_count++ < MAX_INIT_RETRIES) {
f9880e76
PM		 2232
2233 if (is_qla8022(ha)) {
2234 qla4_8xxx_idc_lock(ha);
2235 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
2236 qla4_8xxx_idc_unlock(ha);
2237 if (dev_state == QLA82XX_DEV_FAILED) {
2238 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
2239 "initialize adapter. H/W is in failed state\n",
2240 __func__);
2241 break;
2242 }
2243 }
afaf5a2d
DS		 2244 DEBUG2(printk("scsi: %s: retrying adapter initialization "
2245 "(%d)\n", __func__, init_retry_count));
f4f5df23
VC		 2246
2247 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
2248 continue;
2249
afaf5a2d
DS		 2250 status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
2251 }
f4f5df23
VC		 2252
2253 if (!test_bit(AF_ONLINE, &ha->flags)) {
c2660df3 2254 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
afaf5a2d 2255
fe998527
LC		 2256 if (is_qla8022(ha) && ql4xdontresethba) {
2257 /* Put the device in failed state. */
2258 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
2259 qla4_8xxx_idc_lock(ha);
2260 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2261 QLA82XX_DEV_FAILED);
2262 qla4_8xxx_idc_unlock(ha);
2263 }
afaf5a2d
DS		 2264 ret = -ENODEV;
2265 goto probe_failed;
2266 }
2267
2268 host->cmd_per_lun = 3;
2269 host->max_channel = 0;
2270 host->max_lun = MAX_LUNS - 1;
2271 host->max_id = MAX_TARGETS;
2272 host->max_cmd_len = IOCB_MAX_CDB_LEN;
2273 host->can_queue = MAX_SRBS ;
2274 host->transportt = qla4xxx_scsi_transport;
2275
2276 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
2277 if (ret) {
c2660df3
VC		 2278 ql4_printk(KERN_WARNING, ha,
2279 "scsi_init_shared_tag_map failed\n");
2280 goto probe_failed;
afaf5a2d
DS		 2281 }
2282
2283 /* Startup the kernel thread for this host adapter. */
2284 DEBUG2(printk("scsi: %s: Starting kernel thread for "
2285 "qla4xxx_dpc\n", __func__));
2286 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
2287 ha->dpc_thread = create_singlethread_workqueue(buf);
2288 if (!ha->dpc_thread) {
c2660df3 2289 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
afaf5a2d
DS		 2290 ret = -ENODEV;
2291 goto probe_failed;
2292 }
c4028958 2293 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
afaf5a2d 2294
f4f5df23
VC		 2295 /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
2296 * (which is called indirectly by qla4xxx_initialize_adapter),
2297 * so that irqs will be registered after crbinit but before
2298 * mbx_intr_enable.
2299 */
2300 if (!is_qla8022(ha)) {
2301 ret = qla4xxx_request_irqs(ha);
2302 if (ret) {
2303 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
2304 "interrupt %d already in use.\n", pdev->irq);
2305 goto probe_failed;
2306 }
afaf5a2d 2307 }
afaf5a2d 2308
2232be0d 2309 pci_save_state(ha->pdev);
f4f5df23 2310 ha->isp_ops->enable_intrs(ha);
afaf5a2d
DS		 2311
2312 /* Start timer thread. */
2313 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
2314
2315 set_bit(AF_INIT_DONE, &ha->flags);
2316
2317 pci_set_drvdata(pdev, ha);
2318
2319 ret = scsi_add_host(host, &pdev->dev);
2320 if (ret)
2321 goto probe_failed;
2322
afaf5a2d
DS		 2323 printk(KERN_INFO
2324 " QLogic iSCSI HBA Driver version: %s\n"
2325 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
2326 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
2327 ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
2328 ha->patch_number, ha->build_number);
921601b7 2329 scsi_scan_host(host);
ed1086e0
VC		 2330
2331 qla4xxx_create_ifaces(ha);
afaf5a2d
DS		 2332 return 0;
2333
afaf5a2d
DS		 2334probe_failed:
2335 qla4xxx_free_adapter(ha);
f4f5df23
VC		 2336
2337probe_failed_ioconfig:
2232be0d 2338 pci_disable_pcie_error_reporting(pdev);
afaf5a2d
DS		 2339 scsi_host_put(ha->host);
2340
2341probe_disable_device:
2342 pci_disable_device(pdev);
2343
2344 return ret;
2345}
2346
7eece5a0
KH		 2347/**
2348 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
2349 * @ha: pointer to adapter structure
2350 *
2351 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
2352 * so that the other port will not re-initialize while in the process of
2353 * removing the ha due to driver unload or hba hotplug.
2354 **/
2355static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
2356{
2357 struct scsi_qla_host *other_ha = NULL;
2358 struct pci_dev *other_pdev = NULL;
2359 int fn = ISP4XXX_PCI_FN_2;
2360
2361 /*iscsi function numbers for ISP4xxx is 1 and 3*/
2362 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
2363 fn = ISP4XXX_PCI_FN_1;
2364
2365 other_pdev =
2366 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
2367 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
2368 fn));
2369
2370 /* Get other_ha if other_pdev is valid and state is enable*/
2371 if (other_pdev) {
2372 if (atomic_read(&other_pdev->enable_cnt)) {
2373 other_ha = pci_get_drvdata(other_pdev);
2374 if (other_ha) {
2375 set_bit(AF_HA_REMOVAL, &other_ha->flags);
2376 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
2377 "Prevent %s reinit\n", __func__,
2378 dev_name(&other_ha->pdev->dev)));
2379 }
2380 }
2381 pci_dev_put(other_pdev);
2382 }
2383}
2384
afaf5a2d
DS		 2385/**
2386 * qla4xxx_remove_adapter - calback function to remove adapter.
2387 * @pci_dev: PCI device pointer
2388 **/
2389static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
2390{
2391 struct scsi_qla_host *ha;
2392
2393 ha = pci_get_drvdata(pdev);
2394
7eece5a0
KH		 2395 if (!is_qla8022(ha))
2396 qla4xxx_prevent_other_port_reinit(ha);
bee4fe8e 2397
afaf5a2d
DS		 2398 /* remove devs from iscsi_sessions to scsi_devices */
2399 qla4xxx_free_ddb_list(ha);
2400
ed1086e0
VC		 2401 /* destroy iface from sysfs */
2402 qla4xxx_destroy_ifaces(ha);
2403
afaf5a2d
DS		 2404 scsi_remove_host(ha->host);
2405
2406 qla4xxx_free_adapter(ha);
2407
2408 scsi_host_put(ha->host);
2409
2232be0d 2410 pci_disable_pcie_error_reporting(pdev);
f4f5df23 2411 pci_disable_device(pdev);
afaf5a2d
DS		 2412 pci_set_drvdata(pdev, NULL);
2413}
2414
2415/**
2416 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
2417 * @ha: HA context
2418 *
2419 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
2420 * supported addressing method.
2421 */
47975477 2422static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
afaf5a2d
DS		 2423{
2424 int retval;
2425
2426 /* Update our PCI device dma_mask for full 64 bit mask */
6a35528a
YH		 2427 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
2428 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
afaf5a2d
DS		 2429 dev_dbg(&ha->pdev->dev,
2430 "Failed to set 64 bit PCI consistent mask; "
2431 "using 32 bit.\n");
2432 retval = pci_set_consistent_dma_mask(ha->pdev,
284901a9 2433 DMA_BIT_MASK(32));
afaf5a2d
DS		 2434 }
2435 } else
284901a9 2436 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
afaf5a2d
DS		 2437}
2438
2439static int qla4xxx_slave_alloc(struct scsi_device *sdev)
2440{
2441 struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target);
2442 struct ddb_entry *ddb = sess->dd_data;
8bb4033d 2443 int queue_depth = QL4_DEF_QDEPTH;
afaf5a2d
DS		 2444
2445 sdev->hostdata = ddb;
2446 sdev->tagged_supported = 1;
8bb4033d
VC		 2447
2448 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
2449 queue_depth = ql4xmaxqdepth;
2450
2451 scsi_activate_tcq(sdev, queue_depth);
afaf5a2d
DS		 2452 return 0;
2453}
2454
2455static int qla4xxx_slave_configure(struct scsi_device *sdev)
2456{
2457 sdev->tagged_supported = 1;
2458 return 0;
2459}
2460
2461static void qla4xxx_slave_destroy(struct scsi_device *sdev)
2462{
2463 scsi_deactivate_tcq(sdev, 1);
2464}
2465
2466/**
2467 * qla4xxx_del_from_active_array - returns an active srb
2468 * @ha: Pointer to host adapter structure.
fd589a8f 2469 * @index: index into the active_array
afaf5a2d
DS		 2470 *
2471 * This routine removes and returns the srb at the specified index
2472 **/
f4f5df23
VC		 2473struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
2474 uint32_t index)
afaf5a2d
DS		 2475{
2476 struct srb *srb = NULL;
5369887a 2477 struct scsi_cmnd *cmd = NULL;
afaf5a2d 2478
5369887a
VC		 2479 cmd = scsi_host_find_tag(ha->host, index);
2480 if (!cmd)
afaf5a2d
DS		 2481 return srb;
2482
5369887a
VC		 2483 srb = (struct srb *)CMD_SP(cmd);
2484 if (!srb)
afaf5a2d
DS		 2485 return srb;
2486
2487 /* update counters */
2488 if (srb->flags & SRB_DMA_VALID) {
2489 ha->req_q_count += srb->iocb_cnt;
2490 ha->iocb_cnt -= srb->iocb_cnt;
2491 if (srb->cmd)
5369887a
VC		 2492 srb->cmd->host_scribble =
2493 (unsigned char *)(unsigned long) MAX_SRBS;
afaf5a2d
DS		 2494 }
2495 return srb;
2496}
2497
afaf5a2d
DS		 2498/**
2499 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
09a0f719 2500 * @ha: Pointer to host adapter structure.
afaf5a2d
DS		 2501 * @cmd: Scsi Command to wait on.
2502 *
2503 * This routine waits for the command to be returned by the Firmware
2504 * for some max time.
2505 **/
2506static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
2507 struct scsi_cmnd *cmd)
2508{
2509 int done = 0;
2510 struct srb *rp;
2511 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
2232be0d
LC		 2512 int ret = SUCCESS;
2513
2514 /* Dont wait on command if PCI error is being handled
2515 * by PCI AER driver
2516 */
2517 if (unlikely(pci_channel_offline(ha->pdev)) ||
2518 (test_bit(AF_EEH_BUSY, &ha->flags))) {
2519 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
2520 ha->host_no, __func__);
2521 return ret;
2522 }
afaf5a2d
DS		 2523
2524 do {
2525 /* Checking to see if its returned to OS */
5369887a 2526 rp = (struct srb *) CMD_SP(cmd);
afaf5a2d
DS		 2527 if (rp == NULL) {
2528 done++;
2529 break;
2530 }
2531
2532 msleep(2000);
2533 } while (max_wait_time--);
2534
2535 return done;
2536}
2537
2538/**
2539 * qla4xxx_wait_for_hba_online - waits for HBA to come online
2540 * @ha: Pointer to host adapter structure
2541 **/
2542static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
2543{
2544 unsigned long wait_online;
2545
f581a3f7 2546 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
afaf5a2d
DS		 2547 while (time_before(jiffies, wait_online)) {
2548
2549 if (adapter_up(ha))
2550 return QLA_SUCCESS;
afaf5a2d
DS		 2551
2552 msleep(2000);
2553 }
2554
2555 return QLA_ERROR;
2556}
2557
2558/**
ce545039 2559 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
fd589a8f 2560 * @ha: pointer to HBA
afaf5a2d
DS		 2561 * @t: target id
2562 * @l: lun id
2563 *
2564 * This function waits for all outstanding commands to a lun to complete. It
2565 * returns 0 if all pending commands are returned and 1 otherwise.
2566 **/
ce545039
MC		 2567static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
2568 struct scsi_target *stgt,
2569 struct scsi_device *sdev)
afaf5a2d
DS		 2570{
2571 int cnt;
2572 int status = 0;
2573 struct scsi_cmnd *cmd;
2574
2575 /*
ce545039
MC		 2576 * Waiting for all commands for the designated target or dev
2577 * in the active array
afaf5a2d
DS		 2578 */
2579 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
2580 cmd = scsi_host_find_tag(ha->host, cnt);
ce545039
MC		 2581 if (cmd && stgt == scsi_target(cmd->device) &&
2582 (!sdev || sdev == cmd->device)) {
afaf5a2d
DS		 2583 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
2584 status++;
2585 break;
2586 }
2587 }
2588 }
2589 return status;
2590}
2591
09a0f719
VC		 2592/**
2593 * qla4xxx_eh_abort - callback for abort task.
2594 * @cmd: Pointer to Linux's SCSI command structure
2595 *
2596 * This routine is called by the Linux OS to abort the specified
2597 * command.
2598 **/
2599static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
2600{
2601 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
2602 unsigned int id = cmd->device->id;
2603 unsigned int lun = cmd->device->lun;
92b3e5bb 2604 unsigned long flags;
09a0f719
VC		 2605 struct srb *srb = NULL;
2606 int ret = SUCCESS;
2607 int wait = 0;
2608
c2660df3 2609 ql4_printk(KERN_INFO, ha,
5cd049a5
CH		 2610 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
2611 ha->host_no, id, lun, cmd);
09a0f719 2612
92b3e5bb 2613 spin_lock_irqsave(&ha->hardware_lock, flags);
09a0f719 2614 srb = (struct srb *) CMD_SP(cmd);
92b3e5bb
MC		 2615 if (!srb) {
2616 spin_unlock_irqrestore(&ha->hardware_lock, flags);
09a0f719 2617 return SUCCESS;
92b3e5bb 2618 }
09a0f719 2619 kref_get(&srb->srb_ref);
92b3e5bb 2620 spin_unlock_irqrestore(&ha->hardware_lock, flags);
09a0f719
VC		 2621
2622 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
2623 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
2624 ha->host_no, id, lun));
2625 ret = FAILED;
2626 } else {
2627 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
2628 ha->host_no, id, lun));
2629 wait = 1;
2630 }
2631
2632 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2633
2634 /* Wait for command to complete */
2635 if (wait) {
2636 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
2637 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
2638 ha->host_no, id, lun));
2639 ret = FAILED;
2640 }
2641 }
2642
c2660df3 2643 ql4_printk(KERN_INFO, ha,
09a0f719 2644 "scsi%ld:%d:%d: Abort command - %s\n",
25985edc 2645 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
09a0f719
VC		 2646
2647 return ret;
2648}
2649
afaf5a2d
DS		 2650/**
2651 * qla4xxx_eh_device_reset - callback for target reset.
2652 * @cmd: Pointer to Linux's SCSI command structure
2653 *
2654 * This routine is called by the Linux OS to reset all luns on the
2655 * specified target.
2656 **/
2657static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
2658{
2659 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
2660 struct ddb_entry *ddb_entry = cmd->device->hostdata;
afaf5a2d
DS		 2661 int ret = FAILED, stat;
2662
612f7348 2663 if (!ddb_entry)
afaf5a2d
DS		 2664 return ret;
2665
c01be6dc
MC		 2666 ret = iscsi_block_scsi_eh(cmd);
2667 if (ret)
2668 return ret;
2669 ret = FAILED;
2670
c2660df3 2671 ql4_printk(KERN_INFO, ha,
afaf5a2d
DS		 2672 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
2673 cmd->device->channel, cmd->device->id, cmd->device->lun);
2674
2675 DEBUG2(printk(KERN_INFO
2676 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
2677 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
242f9dcb 2678 cmd, jiffies, cmd->request->timeout / HZ,
afaf5a2d
DS		 2679 ha->dpc_flags, cmd->result, cmd->allowed));
2680
2681 /* FIXME: wait for hba to go online */
2682 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
2683 if (stat != QLA_SUCCESS) {
c2660df3 2684 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
afaf5a2d
DS		 2685 goto eh_dev_reset_done;
2686 }
2687
ce545039
MC		 2688 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
2689 cmd->device)) {
c2660df3 2690 ql4_printk(KERN_INFO, ha,
ce545039
MC		 2691 "DEVICE RESET FAILED - waiting for "
2692 "commands.\n");
2693 goto eh_dev_reset_done;
afaf5a2d
DS		 2694 }
2695
9d562913
DS		 2696 /* Send marker. */
2697 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
2698 MM_LUN_RESET) != QLA_SUCCESS)
2699 goto eh_dev_reset_done;
2700
c2660df3 2701 ql4_printk(KERN_INFO, ha,
afaf5a2d
DS		 2702 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
2703 ha->host_no, cmd->device->channel, cmd->device->id,
2704 cmd->device->lun);
2705
2706 ret = SUCCESS;
2707
2708eh_dev_reset_done:
2709
2710 return ret;
2711}
2712
ce545039
MC		 2713/**
2714 * qla4xxx_eh_target_reset - callback for target reset.
2715 * @cmd: Pointer to Linux's SCSI command structure
2716 *
2717 * This routine is called by the Linux OS to reset the target.
2718 **/
2719static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
2720{
2721 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
2722 struct ddb_entry *ddb_entry = cmd->device->hostdata;
c01be6dc 2723 int stat, ret;
ce545039
MC		 2724
2725 if (!ddb_entry)
2726 return FAILED;
2727
c01be6dc
MC		 2728 ret = iscsi_block_scsi_eh(cmd);
2729 if (ret)
2730 return ret;
2731
ce545039
MC		 2732 starget_printk(KERN_INFO, scsi_target(cmd->device),
2733 "WARM TARGET RESET ISSUED.\n");
2734
2735 DEBUG2(printk(KERN_INFO
2736 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
2737 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
242f9dcb 2738 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
ce545039
MC		 2739 ha->dpc_flags, cmd->result, cmd->allowed));
2740
2741 stat = qla4xxx_reset_target(ha, ddb_entry);
2742 if (stat != QLA_SUCCESS) {
2743 starget_printk(KERN_INFO, scsi_target(cmd->device),
2744 "WARM TARGET RESET FAILED.\n");
2745 return FAILED;
2746 }
2747
ce545039
MC		 2748 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
2749 NULL)) {
2750 starget_printk(KERN_INFO, scsi_target(cmd->device),
2751 "WARM TARGET DEVICE RESET FAILED - "
2752 "waiting for commands.\n");
2753 return FAILED;
2754 }
2755
9d562913
DS		 2756 /* Send marker. */
2757 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
2758 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
2759 starget_printk(KERN_INFO, scsi_target(cmd->device),
2760 "WARM TARGET DEVICE RESET FAILED - "
2761 "marker iocb failed.\n");
2762 return FAILED;
2763 }
2764
ce545039
MC		 2765 starget_printk(KERN_INFO, scsi_target(cmd->device),
2766 "WARM TARGET RESET SUCCEEDED.\n");
2767 return SUCCESS;
2768}
2769
afaf5a2d
DS		 2770/**
2771 * qla4xxx_eh_host_reset - kernel callback
2772 * @cmd: Pointer to Linux's SCSI command structure
2773 *
2774 * This routine is invoked by the Linux kernel to perform fatal error
2775 * recovery on the specified adapter.
2776 **/
2777static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
2778{
2779 int return_status = FAILED;
2780 struct scsi_qla_host *ha;
2781
2782 ha = (struct scsi_qla_host *) cmd->device->host->hostdata;
2783
f4f5df23
VC		 2784 if (ql4xdontresethba) {
2785 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
2786 ha->host_no, __func__));
2787 return FAILED;
2788 }
2789
c2660df3 2790 ql4_printk(KERN_INFO, ha,
dca05c4c 2791 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
afaf5a2d
DS		 2792 cmd->device->channel, cmd->device->id, cmd->device->lun);
2793
2794 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
2795 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
2796 "DEAD.\n", ha->host_no, cmd->device->channel,
2797 __func__));
2798
2799 return FAILED;
2800 }
2801
f4f5df23
VC		 2802 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2803 if (is_qla8022(ha))
2804 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2805 else
2806 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2807 }
50a29aec 2808
f4f5df23 2809 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
afaf5a2d 2810 return_status = SUCCESS;
afaf5a2d 2811
c2660df3 2812 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
25985edc 2813 return_status == FAILED ? "FAILED" : "SUCCEEDED");
afaf5a2d
DS		 2814
2815 return return_status;
2816}
2817
2232be0d
LC		 2818/* PCI AER driver recovers from all correctable errors w/o
2819 * driver intervention. For uncorrectable errors PCI AER
2820 * driver calls the following device driver's callbacks
2821 *
2822 * - Fatal Errors - link_reset
2823 * - Non-Fatal Errors - driver's pci_error_detected() which
2824 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
2825 *
2826 * PCI AER driver calls
2827 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
2828 * returns RECOVERED or NEED_RESET if fw_hung
2829 * NEED_RESET - driver's slot_reset()
2830 * DISCONNECT - device is dead & cannot recover
2831 * RECOVERED - driver's pci_resume()
2832 */
2833static pci_ers_result_t
2834qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2835{
2836 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
2837
2838 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
2839 ha->host_no, __func__, state);
2840
2841 if (!is_aer_supported(ha))
2842 return PCI_ERS_RESULT_NONE;
2843
2844 switch (state) {
2845 case pci_channel_io_normal:
2846 clear_bit(AF_EEH_BUSY, &ha->flags);
2847 return PCI_ERS_RESULT_CAN_RECOVER;
2848 case pci_channel_io_frozen:
2849 set_bit(AF_EEH_BUSY, &ha->flags);
2850 qla4xxx_mailbox_premature_completion(ha);
2851 qla4xxx_free_irqs(ha);
2852 pci_disable_device(pdev);
7b3595df
VC		 2853 /* Return back all IOs */
2854 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2232be0d
LC		 2855 return PCI_ERS_RESULT_NEED_RESET;
2856 case pci_channel_io_perm_failure:
2857 set_bit(AF_EEH_BUSY, &ha->flags);
2858 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
2859 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2860 return PCI_ERS_RESULT_DISCONNECT;
2861 }
2862 return PCI_ERS_RESULT_NEED_RESET;
2863}
2864
2865/**
2866 * qla4xxx_pci_mmio_enabled() gets called if
2867 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
2868 * and read/write to the device still works.
2869 **/
2870static pci_ers_result_t
2871qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
2872{
2873 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
2874
2875 if (!is_aer_supported(ha))
2876 return PCI_ERS_RESULT_NONE;
2877
7b3595df 2878 return PCI_ERS_RESULT_RECOVERED;
2232be0d
LC		 2879}
2880
7b3595df 2881static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
2232be0d
LC		 2882{
2883 uint32_t rval = QLA_ERROR;
7b3595df 2884 uint32_t ret = 0;
2232be0d
LC		 2885 int fn;
2886 struct pci_dev *other_pdev = NULL;
2887
2888 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
2889
2890 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2891
2892 if (test_bit(AF_ONLINE, &ha->flags)) {
2893 clear_bit(AF_ONLINE, &ha->flags);
2894 qla4xxx_mark_all_devices_missing(ha);
2895 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2232be0d
LC		 2896 }
2897
2898 fn = PCI_FUNC(ha->pdev->devfn);
2899 while (fn > 0) {
2900 fn--;
2901 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
2902 "func %x\n", ha->host_no, __func__, fn);
2903 /* Get the pci device given the domain, bus,
2904 * slot/function number */
2905 other_pdev =
2906 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
2907 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
2908 fn));
2909
2910 if (!other_pdev)
2911 continue;
2912
2913 if (atomic_read(&other_pdev->enable_cnt)) {
2914 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
2915 "func in enabled state%x\n", ha->host_no,
2916 __func__, fn);
2917 pci_dev_put(other_pdev);
2918 break;
2919 }
2920 pci_dev_put(other_pdev);
2921 }
2922
2923 /* The first function on the card, the reset owner will
2924 * start & initialize the firmware. The other functions
2925 * on the card will reset the firmware context
2926 */
2927 if (!fn) {
2928 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
2929 "0x%x is the owner\n", ha->host_no, __func__,
2930 ha->pdev->devfn);
2931
2932 qla4_8xxx_idc_lock(ha);
2933 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2934 QLA82XX_DEV_COLD);
2935
2936 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
2937 QLA82XX_IDC_VERSION);
2938
2939 qla4_8xxx_idc_unlock(ha);
2940 clear_bit(AF_FW_RECOVERY, &ha->flags);
2941 rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
2942 qla4_8xxx_idc_lock(ha);
2943
2944 if (rval != QLA_SUCCESS) {
2945 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
2946 "FAILED\n", ha->host_no, __func__);
2947 qla4_8xxx_clear_drv_active(ha);
2948 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2949 QLA82XX_DEV_FAILED);
2950 } else {
2951 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
2952 "READY\n", ha->host_no, __func__);
2953 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2954 QLA82XX_DEV_READY);
2955 /* Clear driver state register */
2956 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
2957 qla4_8xxx_set_drv_active(ha);
7b3595df
VC		 2958 ret = qla4xxx_request_irqs(ha);
2959 if (ret) {
2960 ql4_printk(KERN_WARNING, ha, "Failed to "
2961 "reserve interrupt %d already in use.\n",
2962 ha->pdev->irq);
2963 rval = QLA_ERROR;
2964 } else {
2965 ha->isp_ops->enable_intrs(ha);
2966 rval = QLA_SUCCESS;
2967 }
2232be0d
LC		 2968 }
2969 qla4_8xxx_idc_unlock(ha);
2970 } else {
2971 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
2972 "the reset owner\n", ha->host_no, __func__,
2973 ha->pdev->devfn);
2974 if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
2975 QLA82XX_DEV_READY)) {
2976 clear_bit(AF_FW_RECOVERY, &ha->flags);
2977 rval = qla4xxx_initialize_adapter(ha,
2978 PRESERVE_DDB_LIST);
7b3595df
VC		 2979 if (rval == QLA_SUCCESS) {
2980 ret = qla4xxx_request_irqs(ha);
2981 if (ret) {
2982 ql4_printk(KERN_WARNING, ha, "Failed to"
2983 " reserve interrupt %d already in"
2984 " use.\n", ha->pdev->irq);
2985 rval = QLA_ERROR;
2986 } else {
2987 ha->isp_ops->enable_intrs(ha);
2988 rval = QLA_SUCCESS;
2989 }
2990 }
2232be0d
LC		 2991 qla4_8xxx_idc_lock(ha);
2992 qla4_8xxx_set_drv_active(ha);
2993 qla4_8xxx_idc_unlock(ha);
2994 }
2995 }
2996 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2997 return rval;
2998}
2999
3000static pci_ers_result_t
3001qla4xxx_pci_slot_reset(struct pci_dev *pdev)
3002{
3003 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
3004 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
3005 int rc;
3006
3007 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
3008 ha->host_no, __func__);
3009
3010 if (!is_aer_supported(ha))
3011 return PCI_ERS_RESULT_NONE;
3012
3013 /* Restore the saved state of PCIe device -
3014 * BAR registers, PCI Config space, PCIX, MSI,
3015 * IOV states
3016 */
3017 pci_restore_state(pdev);
3018
3019 /* pci_restore_state() clears the saved_state flag of the device
3020 * save restored state which resets saved_state flag
3021 */
3022 pci_save_state(pdev);
3023
3024 /* Initialize device or resume if in suspended state */
3025 rc = pci_enable_device(pdev);
3026 if (rc) {
25985edc 3027 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
2232be0d
LC		 3028 "device after reset\n", ha->host_no, __func__);
3029 goto exit_slot_reset;
3030 }
3031
7b3595df 3032 ha->isp_ops->disable_intrs(ha);
2232be0d
LC		 3033
3034 if (is_qla8022(ha)) {
3035 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
3036 ret = PCI_ERS_RESULT_RECOVERED;
3037 goto exit_slot_reset;
3038 } else
3039 goto exit_slot_reset;
3040 }
3041
3042exit_slot_reset:
3043 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
3044 "device after reset\n", ha->host_no, __func__, ret);
3045 return ret;
3046}
3047
3048static void
3049qla4xxx_pci_resume(struct pci_dev *pdev)
3050{
3051 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
3052 int ret;
3053
3054 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
3055 ha->host_no, __func__);
3056
3057 ret = qla4xxx_wait_for_hba_online(ha);
3058 if (ret != QLA_SUCCESS) {
3059 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
3060 "resume I/O from slot/link_reset\n", ha->host_no,
3061 __func__);
3062 }
3063
3064 pci_cleanup_aer_uncorrect_error_status(pdev);
3065 clear_bit(AF_EEH_BUSY, &ha->flags);
3066}
3067
3068static struct pci_error_handlers qla4xxx_err_handler = {
3069 .error_detected = qla4xxx_pci_error_detected,
3070 .mmio_enabled = qla4xxx_pci_mmio_enabled,
3071 .slot_reset = qla4xxx_pci_slot_reset,
3072 .resume = qla4xxx_pci_resume,
3073};
3074
afaf5a2d
DS		 3075static struct pci_device_id qla4xxx_pci_tbl[] = {
3076 {
3077 .vendor = PCI_VENDOR_ID_QLOGIC,
3078 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
3079 .subvendor = PCI_ANY_ID,
3080 .subdevice = PCI_ANY_ID,
3081 },
3082 {
3083 .vendor = PCI_VENDOR_ID_QLOGIC,
3084 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
3085 .subvendor = PCI_ANY_ID,
3086 .subdevice = PCI_ANY_ID,
3087 },
d915058f
DS		 3088 {
3089 .vendor = PCI_VENDOR_ID_QLOGIC,
3090 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
3091 .subvendor = PCI_ANY_ID,
3092 .subdevice = PCI_ANY_ID,
3093 },
f4f5df23
VC		 3094 {
3095 .vendor = PCI_VENDOR_ID_QLOGIC,
3096 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
3097 .subvendor = PCI_ANY_ID,
3098 .subdevice = PCI_ANY_ID,
3099 },
afaf5a2d
DS		 3100 {0, 0},
3101};
3102MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
3103
47975477 3104static struct pci_driver qla4xxx_pci_driver = {
afaf5a2d
DS		 3105 .name = DRIVER_NAME,
3106 .id_table = qla4xxx_pci_tbl,
3107 .probe = qla4xxx_probe_adapter,
3108 .remove = qla4xxx_remove_adapter,
2232be0d 3109 .err_handler = &qla4xxx_err_handler,
afaf5a2d
DS		 3110};
3111
3112static int __init qla4xxx_module_init(void)
3113{
3114 int ret;
3115
3116 /* Allocate cache for SRBs. */
3117 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
20c2df83 3118 SLAB_HWCACHE_ALIGN, NULL);
afaf5a2d
DS		 3119 if (srb_cachep == NULL) {
3120 printk(KERN_ERR
3121 "%s: Unable to allocate SRB cache..."
3122 "Failing load!\n", DRIVER_NAME);
3123 ret = -ENOMEM;
3124 goto no_srp_cache;
3125 }
3126
3127 /* Derive version string. */
3128 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
11010fec 3129 if (ql4xextended_error_logging)
afaf5a2d
DS		 3130 strcat(qla4xxx_version_str, "-debug");
3131
3132 qla4xxx_scsi_transport =
3133 iscsi_register_transport(&qla4xxx_iscsi_transport);
3134 if (!qla4xxx_scsi_transport){
3135 ret = -ENODEV;
3136 goto release_srb_cache;
3137 }
3138
afaf5a2d
DS		 3139 ret = pci_register_driver(&qla4xxx_pci_driver);
3140 if (ret)
3141 goto unregister_transport;
3142
3143 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
3144 return 0;
5ae16db3 3145
afaf5a2d
DS		 3146unregister_transport:
3147 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
3148release_srb_cache:
3149 kmem_cache_destroy(srb_cachep);
3150no_srp_cache:
3151 return ret;
3152}
3153
3154static void __exit qla4xxx_module_exit(void)
3155{
3156 pci_unregister_driver(&qla4xxx_pci_driver);
3157 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
3158 kmem_cache_destroy(srb_cachep);
3159}
3160
3161module_init(qla4xxx_module_init);
3162module_exit(qla4xxx_module_exit);
3163
3164MODULE_AUTHOR("QLogic Corporation");
3165MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
3166MODULE_LICENSE("GPL");
3167MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
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