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[mirror_ubuntu-artful-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>
2a991c21
MR		 9#include <linux/blkdev.h>
10#include <linux/iscsi_boot_sysfs.h>
13483730 11#include <linux/inet.h>
afaf5a2d
DS		 12
13#include <scsi/scsi_tcq.h>
14#include <scsi/scsicam.h>
15
16#include "ql4_def.h"
bee4fe8e
DS		 17#include "ql4_version.h"
18#include "ql4_glbl.h"
19#include "ql4_dbg.h"
20#include "ql4_inline.h"
afaf5a2d
DS		 21
22/*
23 * Driver version
24 */
47975477 25static char qla4xxx_version_str[40];
afaf5a2d
DS		 26
27/*
28 * SRB allocation cache
29 */
e18b890b 30static struct kmem_cache *srb_cachep;
afaf5a2d
DS		 31
32/*
33 * Module parameter information and variables
34 */
13483730
MC		 35int ql4xdisablesysfsboot = 1;
36module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
37MODULE_PARM_DESC(ql4xdisablesysfsboot,
38 "Set to disable exporting boot targets to sysfs\n"
39 " 0 - Export boot targets\n"
40 " 1 - Do not export boot targets (Default)");
41
afaf5a2d 42int ql4xdontresethba = 0;
f4f5df23 43module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
afaf5a2d 44MODULE_PARM_DESC(ql4xdontresethba,
f4f5df23
VC		 45 "Don't reset the HBA for driver recovery \n"
46 " 0 - It will reset HBA (Default)\n"
47 " 1 - It will NOT reset HBA");
afaf5a2d 48
11010fec 49int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */
f4f5df23 50module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
11010fec 51MODULE_PARM_DESC(ql4xextended_error_logging,
afaf5a2d
DS		 52 "Option to enable extended error logging, "
53 "Default is 0 - no logging, 1 - debug logging");
54
f4f5df23
VC		 55int ql4xenablemsix = 1;
56module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
57MODULE_PARM_DESC(ql4xenablemsix,
58 "Set to enable MSI or MSI-X interrupt mechanism.\n"
59 " 0 = enable INTx interrupt mechanism.\n"
60 " 1 = enable MSI-X interrupt mechanism (Default).\n"
61 " 2 = enable MSI interrupt mechanism.");
477ffb9d 62
d510d965 63#define QL4_DEF_QDEPTH 32
8bb4033d
VC		 64static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
65module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
66MODULE_PARM_DESC(ql4xmaxqdepth,
67 "Maximum queue depth to report for target devices.\n"
68 " Default: 32.");
d510d965 69
3038727c
VC		 70static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
71module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
72MODULE_PARM_DESC(ql4xsess_recovery_tmo,
73 "Target Session Recovery Timeout.\n"
13483730 74 " Default: 120 sec.");
3038727c 75
b3a271a9 76static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
afaf5a2d
DS		 77/*
78 * SCSI host template entry points
79 */
47975477 80static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
afaf5a2d
DS		 81
82/*
83 * iSCSI template entry points
84 */
afaf5a2d
DS		 85static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
86 enum iscsi_param param, char *buf);
aa1e93a2
MC		 87static int qla4xxx_host_get_param(struct Scsi_Host *shost,
88 enum iscsi_host_param param, char *buf);
00c31889
MC		 89static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
90 uint32_t len);
ed1086e0
VC		 91static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
92 enum iscsi_param_type param_type,
93 int param, char *buf);
5c656af7 94static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
b3a271a9
MR		 95static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
96 struct sockaddr *dst_addr,
97 int non_blocking);
98static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
99static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
100static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
101 enum iscsi_param param, char *buf);
102static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
103static struct iscsi_cls_conn *
104qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
105static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
106 struct iscsi_cls_conn *cls_conn,
107 uint64_t transport_fd, int is_leading);
108static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
109static struct iscsi_cls_session *
110qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
111 uint16_t qdepth, uint32_t initial_cmdsn);
112static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
113static void qla4xxx_task_work(struct work_struct *wdata);
114static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
115static int qla4xxx_task_xmit(struct iscsi_task *);
116static void qla4xxx_task_cleanup(struct iscsi_task *);
117static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
118static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
119 struct iscsi_stats *stats);
afaf5a2d
DS		 120/*
121 * SCSI host template entry points
122 */
f281233d 123static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
09a0f719 124static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
afaf5a2d 125static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
ce545039 126static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
afaf5a2d
DS		 127static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
128static int qla4xxx_slave_alloc(struct scsi_device *device);
129static int qla4xxx_slave_configure(struct scsi_device *device);
130static void qla4xxx_slave_destroy(struct scsi_device *sdev);
587a1f16 131static umode_t ql4_attr_is_visible(int param_type, int param);
95d31262 132static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
afaf5a2d 133
f4f5df23
VC		 134static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
135 QLA82XX_LEGACY_INTR_CONFIG;
136
afaf5a2d
DS		 137static struct scsi_host_template qla4xxx_driver_template = {
138 .module = THIS_MODULE,
139 .name = DRIVER_NAME,
140 .proc_name = DRIVER_NAME,
141 .queuecommand = qla4xxx_queuecommand,
142
09a0f719 143 .eh_abort_handler = qla4xxx_eh_abort,
afaf5a2d 144 .eh_device_reset_handler = qla4xxx_eh_device_reset,
ce545039 145 .eh_target_reset_handler = qla4xxx_eh_target_reset,
afaf5a2d 146 .eh_host_reset_handler = qla4xxx_eh_host_reset,
5c656af7 147 .eh_timed_out = qla4xxx_eh_cmd_timed_out,
afaf5a2d
DS		 148
149 .slave_configure = qla4xxx_slave_configure,
150 .slave_alloc = qla4xxx_slave_alloc,
151 .slave_destroy = qla4xxx_slave_destroy,
152
153 .this_id = -1,
154 .cmd_per_lun = 3,
155 .use_clustering = ENABLE_CLUSTERING,
156 .sg_tablesize = SG_ALL,
157
158 .max_sectors = 0xFFFF,
7ad633c0 159 .shost_attrs = qla4xxx_host_attrs,
95d31262 160 .host_reset = qla4xxx_host_reset,
a355943c 161 .vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
afaf5a2d
DS		 162};
163
164static struct iscsi_transport qla4xxx_iscsi_transport = {
165 .owner = THIS_MODULE,
166 .name = DRIVER_NAME,
b3a271a9
MR		 167 .caps = CAP_TEXT_NEGO |
168 CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
169 CAP_DATADGST | CAP_LOGIN_OFFLOAD |
170 CAP_MULTI_R2T,
3128c6c7 171 .attr_is_visible = ql4_attr_is_visible,
b3a271a9
MR		 172 .create_session = qla4xxx_session_create,
173 .destroy_session = qla4xxx_session_destroy,
174 .start_conn = qla4xxx_conn_start,
175 .create_conn = qla4xxx_conn_create,
176 .bind_conn = qla4xxx_conn_bind,
177 .stop_conn = iscsi_conn_stop,
178 .destroy_conn = qla4xxx_conn_destroy,
179 .set_param = iscsi_set_param,
afaf5a2d 180 .get_conn_param = qla4xxx_conn_get_param,
b3a271a9
MR		 181 .get_session_param = iscsi_session_get_param,
182 .get_ep_param = qla4xxx_get_ep_param,
183 .ep_connect = qla4xxx_ep_connect,
184 .ep_poll = qla4xxx_ep_poll,
185 .ep_disconnect = qla4xxx_ep_disconnect,
186 .get_stats = qla4xxx_conn_get_stats,
187 .send_pdu = iscsi_conn_send_pdu,
188 .xmit_task = qla4xxx_task_xmit,
189 .cleanup_task = qla4xxx_task_cleanup,
190 .alloc_pdu = qla4xxx_alloc_pdu,
191
aa1e93a2 192 .get_host_param = qla4xxx_host_get_param,
d00efe3f 193 .set_iface_param = qla4xxx_iface_set_param,
ed1086e0 194 .get_iface_param = qla4xxx_get_iface_param,
a355943c 195 .bsg_request = qla4xxx_bsg_request,
afaf5a2d
DS		 196};
197
198static struct scsi_transport_template *qla4xxx_scsi_transport;
199
587a1f16 200static umode_t ql4_attr_is_visible(int param_type, int param)
3128c6c7
MC		 201{
202 switch (param_type) {
f27fb2ef
MC		 203 case ISCSI_HOST_PARAM:
204 switch (param) {
205 case ISCSI_HOST_PARAM_HWADDRESS:
206 case ISCSI_HOST_PARAM_IPADDRESS:
207 case ISCSI_HOST_PARAM_INITIATOR_NAME:
208 return S_IRUGO;
209 default:
210 return 0;
211 }
3128c6c7
MC		 212 case ISCSI_PARAM:
213 switch (param) {
590134fa
MC		 214 case ISCSI_PARAM_PERSISTENT_ADDRESS:
215 case ISCSI_PARAM_PERSISTENT_PORT:
3128c6c7
MC		 216 case ISCSI_PARAM_CONN_ADDRESS:
217 case ISCSI_PARAM_CONN_PORT:
1d063c17
MC		 218 case ISCSI_PARAM_TARGET_NAME:
219 case ISCSI_PARAM_TPGT:
220 case ISCSI_PARAM_TARGET_ALIAS:
b3a271a9
MR		 221 case ISCSI_PARAM_MAX_BURST:
222 case ISCSI_PARAM_MAX_R2T:
223 case ISCSI_PARAM_FIRST_BURST:
224 case ISCSI_PARAM_MAX_RECV_DLENGTH:
225 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
de37920b 226 case ISCSI_PARAM_IFACE_NAME:
3128c6c7
MC		 227 return S_IRUGO;
228 default:
229 return 0;
230 }
b78dbba0
MC		 231 case ISCSI_NET_PARAM:
232 switch (param) {
233 case ISCSI_NET_PARAM_IPV4_ADDR:
234 case ISCSI_NET_PARAM_IPV4_SUBNET:
235 case ISCSI_NET_PARAM_IPV4_GW:
236 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
237 case ISCSI_NET_PARAM_IFACE_ENABLE:
238 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
239 case ISCSI_NET_PARAM_IPV6_ADDR:
240 case ISCSI_NET_PARAM_IPV6_ROUTER:
241 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
242 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
6ac73e8c
VC		 243 case ISCSI_NET_PARAM_VLAN_ID:
244 case ISCSI_NET_PARAM_VLAN_PRIORITY:
245 case ISCSI_NET_PARAM_VLAN_ENABLED:
943c157b 246 case ISCSI_NET_PARAM_MTU:
2ada7fc5 247 case ISCSI_NET_PARAM_PORT:
b78dbba0
MC		 248 return S_IRUGO;
249 default:
250 return 0;
251 }
3128c6c7
MC		 252 }
253
254 return 0;
255}
256
ed1086e0
VC		 257static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
258 enum iscsi_param_type param_type,
259 int param, char *buf)
260{
261 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
262 struct scsi_qla_host *ha = to_qla_host(shost);
263 int len = -ENOSYS;
264
265 if (param_type != ISCSI_NET_PARAM)
266 return -ENOSYS;
267
268 switch (param) {
269 case ISCSI_NET_PARAM_IPV4_ADDR:
270 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
271 break;
272 case ISCSI_NET_PARAM_IPV4_SUBNET:
273 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
274 break;
275 case ISCSI_NET_PARAM_IPV4_GW:
276 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
277 break;
278 case ISCSI_NET_PARAM_IFACE_ENABLE:
279 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
280 len = sprintf(buf, "%s\n",
281 (ha->ip_config.ipv4_options &
282 IPOPT_IPV4_PROTOCOL_ENABLE) ?
283 "enabled" : "disabled");
284 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
285 len = sprintf(buf, "%s\n",
286 (ha->ip_config.ipv6_options &
287 IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
288 "enabled" : "disabled");
289 break;
290 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
291 len = sprintf(buf, "%s\n",
292 (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
293 "dhcp" : "static");
294 break;
295 case ISCSI_NET_PARAM_IPV6_ADDR:
296 if (iface->iface_num == 0)
297 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
298 if (iface->iface_num == 1)
299 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
300 break;
301 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
302 len = sprintf(buf, "%pI6\n",
303 &ha->ip_config.ipv6_link_local_addr);
304 break;
305 case ISCSI_NET_PARAM_IPV6_ROUTER:
306 len = sprintf(buf, "%pI6\n",
307 &ha->ip_config.ipv6_default_router_addr);
308 break;
309 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
310 len = sprintf(buf, "%s\n",
311 (ha->ip_config.ipv6_addl_options &
312 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
313 "nd" : "static");
314 break;
315 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
316 len = sprintf(buf, "%s\n",
317 (ha->ip_config.ipv6_addl_options &
318 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
319 "auto" : "static");
320 break;
6ac73e8c
VC		 321 case ISCSI_NET_PARAM_VLAN_ID:
322 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
323 len = sprintf(buf, "%d\n",
324 (ha->ip_config.ipv4_vlan_tag &
325 ISCSI_MAX_VLAN_ID));
326 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
327 len = sprintf(buf, "%d\n",
328 (ha->ip_config.ipv6_vlan_tag &
329 ISCSI_MAX_VLAN_ID));
330 break;
331 case ISCSI_NET_PARAM_VLAN_PRIORITY:
332 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
333 len = sprintf(buf, "%d\n",
334 ((ha->ip_config.ipv4_vlan_tag >> 13) &
335 ISCSI_MAX_VLAN_PRIORITY));
336 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
337 len = sprintf(buf, "%d\n",
338 ((ha->ip_config.ipv6_vlan_tag >> 13) &
339 ISCSI_MAX_VLAN_PRIORITY));
340 break;
341 case ISCSI_NET_PARAM_VLAN_ENABLED:
342 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
343 len = sprintf(buf, "%s\n",
344 (ha->ip_config.ipv4_options &
345 IPOPT_VLAN_TAGGING_ENABLE) ?
346 "enabled" : "disabled");
347 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
348 len = sprintf(buf, "%s\n",
349 (ha->ip_config.ipv6_options &
350 IPV6_OPT_VLAN_TAGGING_ENABLE) ?
351 "enabled" : "disabled");
352 break;
943c157b
VC		 353 case ISCSI_NET_PARAM_MTU:
354 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
355 break;
2ada7fc5
VC		 356 case ISCSI_NET_PARAM_PORT:
357 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
358 len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
359 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
360 len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
361 break;
ed1086e0
VC		 362 default:
363 len = -ENOSYS;
364 }
365
366 return len;
367}
368
b3a271a9
MR		 369static struct iscsi_endpoint *
370qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
371 int non_blocking)
5c656af7 372{
b3a271a9
MR		 373 int ret;
374 struct iscsi_endpoint *ep;
375 struct qla_endpoint *qla_ep;
376 struct scsi_qla_host *ha;
377 struct sockaddr_in *addr;
378 struct sockaddr_in6 *addr6;
5c656af7 379
b3a271a9
MR		 380 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
381 if (!shost) {
382 ret = -ENXIO;
383 printk(KERN_ERR "%s: shost is NULL\n",
384 __func__);
385 return ERR_PTR(ret);
386 }
5c656af7 387
b3a271a9
MR		 388 ha = iscsi_host_priv(shost);
389
390 ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
391 if (!ep) {
392 ret = -ENOMEM;
393 return ERR_PTR(ret);
394 }
395
396 qla_ep = ep->dd_data;
397 memset(qla_ep, 0, sizeof(struct qla_endpoint));
398 if (dst_addr->sa_family == AF_INET) {
399 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
400 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
401 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
402 (char *)&addr->sin_addr));
403 } else if (dst_addr->sa_family == AF_INET6) {
404 memcpy(&qla_ep->dst_addr, dst_addr,
405 sizeof(struct sockaddr_in6));
406 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
407 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
408 (char *)&addr6->sin6_addr));
409 }
410
411 qla_ep->host = shost;
412
413 return ep;
5c656af7
MC		 414}
415
b3a271a9 416static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
afaf5a2d 417{
b3a271a9
MR		 418 struct qla_endpoint *qla_ep;
419 struct scsi_qla_host *ha;
420 int ret = 0;
afaf5a2d 421
b3a271a9
MR		 422 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
423 qla_ep = ep->dd_data;
424 ha = to_qla_host(qla_ep->host);
425
13483730 426 if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
b3a271a9
MR		 427 ret = 1;
428
429 return ret;
430}
431
432static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
433{
434 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
435 iscsi_destroy_endpoint(ep);
436}
437
438static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
439 enum iscsi_param param,
440 char *buf)
441{
442 struct qla_endpoint *qla_ep = ep->dd_data;
443 struct sockaddr *dst_addr;
444
445 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
446
447 switch (param) {
448 case ISCSI_PARAM_CONN_PORT:
449 case ISCSI_PARAM_CONN_ADDRESS:
450 if (!qla_ep)
451 return -ENOTCONN;
452
453 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
454 if (!dst_addr)
455 return -ENOTCONN;
456
457 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
458 &qla_ep->dst_addr, param, buf);
459 default:
460 return -ENOSYS;
461 }
462}
463
464static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
465 struct iscsi_stats *stats)
466{
467 struct iscsi_session *sess;
468 struct iscsi_cls_session *cls_sess;
469 struct ddb_entry *ddb_entry;
470 struct scsi_qla_host *ha;
471 struct ql_iscsi_stats *ql_iscsi_stats;
472 int stats_size;
473 int ret;
474 dma_addr_t iscsi_stats_dma;
475
476 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
568d303b 477
b3a271a9
MR		 478 cls_sess = iscsi_conn_to_session(cls_conn);
479 sess = cls_sess->dd_data;
480 ddb_entry = sess->dd_data;
481 ha = ddb_entry->ha;
482
483 stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
484 /* Allocate memory */
485 ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
486 &iscsi_stats_dma, GFP_KERNEL);
487 if (!ql_iscsi_stats) {
488 ql4_printk(KERN_ERR, ha,
489 "Unable to allocate memory for iscsi stats\n");
490 goto exit_get_stats;
568d303b 491 }
b3a271a9
MR		 492
493 ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
494 iscsi_stats_dma);
495 if (ret != QLA_SUCCESS) {
496 ql4_printk(KERN_ERR, ha,
497 "Unable to retreive iscsi stats\n");
498 goto free_stats;
499 }
500
501 /* octets */
502 stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
503 stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
504 /* xmit pdus */
505 stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
506 stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
507 stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
508 stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
509 stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
510 stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
511 stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
512 stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
513 /* recv pdus */
514 stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
515 stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
516 stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
517 stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
518 stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
519 stats->logoutrsp_pdus =
520 le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
521 stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
522 stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
523 stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
524
525free_stats:
526 dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
527 iscsi_stats_dma);
528exit_get_stats:
529 return;
530}
531
532static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
533{
534 struct iscsi_cls_session *session;
535 struct iscsi_session *sess;
536 unsigned long flags;
537 enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
538
539 session = starget_to_session(scsi_target(sc->device));
540 sess = session->dd_data;
541
542 spin_lock_irqsave(&session->lock, flags);
543 if (session->state == ISCSI_SESSION_FAILED)
544 ret = BLK_EH_RESET_TIMER;
545 spin_unlock_irqrestore(&session->lock, flags);
546
547 return ret;
afaf5a2d
DS		 548}
549
aa1e93a2
MC		 550static int qla4xxx_host_get_param(struct Scsi_Host *shost,
551 enum iscsi_host_param param, char *buf)
552{
553 struct scsi_qla_host *ha = to_qla_host(shost);
554 int len;
555
556 switch (param) {
557 case ISCSI_HOST_PARAM_HWADDRESS:
7ffc49a6 558 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
8ad5781a 559 break;
22236961 560 case ISCSI_HOST_PARAM_IPADDRESS:
2bab08fc 561 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
22236961 562 break;
8ad5781a 563 case ISCSI_HOST_PARAM_INITIATOR_NAME:
22236961 564 len = sprintf(buf, "%s\n", ha->name_string);
aa1e93a2
MC		 565 break;
566 default:
567 return -ENOSYS;
568 }
569
570 return len;
571}
572
ed1086e0
VC		 573static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
574{
575 if (ha->iface_ipv4)
576 return;
577
578 /* IPv4 */
579 ha->iface_ipv4 = iscsi_create_iface(ha->host,
580 &qla4xxx_iscsi_transport,
581 ISCSI_IFACE_TYPE_IPV4, 0, 0);
582 if (!ha->iface_ipv4)
583 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
584 "iface0.\n");
585}
586
587static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
588{
589 if (!ha->iface_ipv6_0)
590 /* IPv6 iface-0 */
591 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
592 &qla4xxx_iscsi_transport,
593 ISCSI_IFACE_TYPE_IPV6, 0,
594 0);
595 if (!ha->iface_ipv6_0)
596 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
597 "iface0.\n");
598
599 if (!ha->iface_ipv6_1)
600 /* IPv6 iface-1 */
601 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
602 &qla4xxx_iscsi_transport,
603 ISCSI_IFACE_TYPE_IPV6, 1,
604 0);
605 if (!ha->iface_ipv6_1)
606 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
607 "iface1.\n");
608}
609
610static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
611{
612 if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
613 qla4xxx_create_ipv4_iface(ha);
614
615 if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
616 qla4xxx_create_ipv6_iface(ha);
617}
618
619static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
620{
621 if (ha->iface_ipv4) {
622 iscsi_destroy_iface(ha->iface_ipv4);
623 ha->iface_ipv4 = NULL;
624 }
625}
626
627static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
628{
629 if (ha->iface_ipv6_0) {
630 iscsi_destroy_iface(ha->iface_ipv6_0);
631 ha->iface_ipv6_0 = NULL;
632 }
633 if (ha->iface_ipv6_1) {
634 iscsi_destroy_iface(ha->iface_ipv6_1);
635 ha->iface_ipv6_1 = NULL;
636 }
637}
638
639static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
640{
641 qla4xxx_destroy_ipv4_iface(ha);
642 qla4xxx_destroy_ipv6_iface(ha);
643}
644
d00efe3f
MC		 645static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
646 struct iscsi_iface_param_info *iface_param,
647 struct addr_ctrl_blk *init_fw_cb)
648{
649 /*
650 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
651 * iface_num 1 is valid only for IPv6 Addr.
652 */
653 switch (iface_param->param) {
654 case ISCSI_NET_PARAM_IPV6_ADDR:
655 if (iface_param->iface_num & 0x1)
656 /* IPv6 Addr 1 */
657 memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
658 sizeof(init_fw_cb->ipv6_addr1));
659 else
660 /* IPv6 Addr 0 */
661 memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
662 sizeof(init_fw_cb->ipv6_addr0));
663 break;
664 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
665 if (iface_param->iface_num & 0x1)
666 break;
667 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
668 sizeof(init_fw_cb->ipv6_if_id));
669 break;
670 case ISCSI_NET_PARAM_IPV6_ROUTER:
671 if (iface_param->iface_num & 0x1)
672 break;
673 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
674 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
675 break;
676 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
677 /* Autocfg applies to even interface */
678 if (iface_param->iface_num & 0x1)
679 break;
680
681 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
682 init_fw_cb->ipv6_addtl_opts &=
683 cpu_to_le16(
684 ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
685 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
686 init_fw_cb->ipv6_addtl_opts |=
687 cpu_to_le16(
688 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
689 else
690 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
691 "IPv6 addr\n");
692 break;
693 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
694 /* Autocfg applies to even interface */
695 if (iface_param->iface_num & 0x1)
696 break;
697
698 if (iface_param->value[0] ==
699 ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
700 init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
701 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
702 else if (iface_param->value[0] ==
703 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
704 init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
705 ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
706 else
707 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
708 "IPv6 linklocal addr\n");
709 break;
710 case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
711 /* Autocfg applies to even interface */
712 if (iface_param->iface_num & 0x1)
713 break;
714
715 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
716 memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
717 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
718 break;
719 case ISCSI_NET_PARAM_IFACE_ENABLE:
ed1086e0 720 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
d00efe3f
MC		 721 init_fw_cb->ipv6_opts |=
722 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
ed1086e0
VC		 723 qla4xxx_create_ipv6_iface(ha);
724 } else {
d00efe3f
MC		 725 init_fw_cb->ipv6_opts &=
726 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
727 0xFFFF);
ed1086e0
VC		 728 qla4xxx_destroy_ipv6_iface(ha);
729 }
d00efe3f 730 break;
2d63673b 731 case ISCSI_NET_PARAM_VLAN_TAG:
d00efe3f
MC		 732 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
733 break;
6ac73e8c
VC		 734 init_fw_cb->ipv6_vlan_tag =
735 cpu_to_be16(*(uint16_t *)iface_param->value);
736 break;
737 case ISCSI_NET_PARAM_VLAN_ENABLED:
738 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
739 init_fw_cb->ipv6_opts |=
740 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
741 else
742 init_fw_cb->ipv6_opts &=
743 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
d00efe3f 744 break;
943c157b
VC		 745 case ISCSI_NET_PARAM_MTU:
746 init_fw_cb->eth_mtu_size =
747 cpu_to_le16(*(uint16_t *)iface_param->value);
748 break;
2ada7fc5
VC		 749 case ISCSI_NET_PARAM_PORT:
750 /* Autocfg applies to even interface */
751 if (iface_param->iface_num & 0x1)
752 break;
753
754 init_fw_cb->ipv6_port =
755 cpu_to_le16(*(uint16_t *)iface_param->value);
756 break;
d00efe3f
MC		 757 default:
758 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
759 iface_param->param);
760 break;
761 }
762}
763
764static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
765 struct iscsi_iface_param_info *iface_param,
766 struct addr_ctrl_blk *init_fw_cb)
767{
768 switch (iface_param->param) {
769 case ISCSI_NET_PARAM_IPV4_ADDR:
770 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
771 sizeof(init_fw_cb->ipv4_addr));
772 break;
773 case ISCSI_NET_PARAM_IPV4_SUBNET:
774 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
775 sizeof(init_fw_cb->ipv4_subnet));
776 break;
777 case ISCSI_NET_PARAM_IPV4_GW:
778 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
779 sizeof(init_fw_cb->ipv4_gw_addr));
780 break;
781 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
782 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
783 init_fw_cb->ipv4_tcp_opts |=
784 cpu_to_le16(TCPOPT_DHCP_ENABLE);
785 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
786 init_fw_cb->ipv4_tcp_opts &=
787 cpu_to_le16(~TCPOPT_DHCP_ENABLE);
788 else
789 ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
790 break;
791 case ISCSI_NET_PARAM_IFACE_ENABLE:
ed1086e0 792 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
d00efe3f 793 init_fw_cb->ipv4_ip_opts |=
2bab08fc 794 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
ed1086e0
VC		 795 qla4xxx_create_ipv4_iface(ha);
796 } else {
d00efe3f 797 init_fw_cb->ipv4_ip_opts &=
2bab08fc 798 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
d00efe3f 799 0xFFFF);
ed1086e0
VC		 800 qla4xxx_destroy_ipv4_iface(ha);
801 }
d00efe3f 802 break;
2d63673b 803 case ISCSI_NET_PARAM_VLAN_TAG:
d00efe3f
MC		 804 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
805 break;
6ac73e8c
VC		 806 init_fw_cb->ipv4_vlan_tag =
807 cpu_to_be16(*(uint16_t *)iface_param->value);
808 break;
809 case ISCSI_NET_PARAM_VLAN_ENABLED:
810 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
811 init_fw_cb->ipv4_ip_opts |=
812 cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
813 else
814 init_fw_cb->ipv4_ip_opts &=
815 cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
d00efe3f 816 break;
943c157b
VC		 817 case ISCSI_NET_PARAM_MTU:
818 init_fw_cb->eth_mtu_size =
819 cpu_to_le16(*(uint16_t *)iface_param->value);
820 break;
2ada7fc5
VC		 821 case ISCSI_NET_PARAM_PORT:
822 init_fw_cb->ipv4_port =
823 cpu_to_le16(*(uint16_t *)iface_param->value);
824 break;
d00efe3f
MC		 825 default:
826 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
827 iface_param->param);
828 break;
829 }
830}
831
832static void
833qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
834{
835 struct addr_ctrl_blk_def *acb;
836 acb = (struct addr_ctrl_blk_def *)init_fw_cb;
837 memset(acb->reserved1, 0, sizeof(acb->reserved1));
838 memset(acb->reserved2, 0, sizeof(acb->reserved2));
839 memset(acb->reserved3, 0, sizeof(acb->reserved3));
840 memset(acb->reserved4, 0, sizeof(acb->reserved4));
841 memset(acb->reserved5, 0, sizeof(acb->reserved5));
842 memset(acb->reserved6, 0, sizeof(acb->reserved6));
843 memset(acb->reserved7, 0, sizeof(acb->reserved7));
844 memset(acb->reserved8, 0, sizeof(acb->reserved8));
845 memset(acb->reserved9, 0, sizeof(acb->reserved9));
846 memset(acb->reserved10, 0, sizeof(acb->reserved10));
847 memset(acb->reserved11, 0, sizeof(acb->reserved11));
848 memset(acb->reserved12, 0, sizeof(acb->reserved12));
849 memset(acb->reserved13, 0, sizeof(acb->reserved13));
850 memset(acb->reserved14, 0, sizeof(acb->reserved14));
851 memset(acb->reserved15, 0, sizeof(acb->reserved15));
852}
853
854static int
00c31889 855qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
d00efe3f
MC		 856{
857 struct scsi_qla_host *ha = to_qla_host(shost);
858 int rval = 0;
859 struct iscsi_iface_param_info *iface_param = NULL;
860 struct addr_ctrl_blk *init_fw_cb = NULL;
861 dma_addr_t init_fw_cb_dma;
862 uint32_t mbox_cmd[MBOX_REG_COUNT];
863 uint32_t mbox_sts[MBOX_REG_COUNT];
00c31889
MC		 864 uint32_t rem = len;
865 struct nlattr *attr;
d00efe3f
MC		 866
867 init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
868 sizeof(struct addr_ctrl_blk),
869 &init_fw_cb_dma, GFP_KERNEL);
870 if (!init_fw_cb) {
871 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
872 __func__);
873 return -ENOMEM;
874 }
875
876 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
877 memset(&mbox_cmd, 0, sizeof(mbox_cmd));
878 memset(&mbox_sts, 0, sizeof(mbox_sts));
879
880 if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
881 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
882 rval = -EIO;
883 goto exit_init_fw_cb;
884 }
885
00c31889
MC		 886 nla_for_each_attr(attr, data, len, rem) {
887 iface_param = nla_data(attr);
d00efe3f
MC		 888
889 if (iface_param->param_type != ISCSI_NET_PARAM)
890 continue;
891
892 switch (iface_param->iface_type) {
893 case ISCSI_IFACE_TYPE_IPV4:
894 switch (iface_param->iface_num) {
895 case 0:
896 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
897 break;
898 default:
899 /* Cannot have more than one IPv4 interface */
900 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
901 "number = %d\n",
902 iface_param->iface_num);
903 break;
904 }
905 break;
906 case ISCSI_IFACE_TYPE_IPV6:
907 switch (iface_param->iface_num) {
908 case 0:
909 case 1:
910 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
911 break;
912 default:
913 /* Cannot have more than two IPv6 interface */
914 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
915 "number = %d\n",
916 iface_param->iface_num);
917 break;
918 }
919 break;
920 default:
921 ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
922 break;
923 }
d00efe3f
MC		 924 }
925
926 init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
927
928 rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
929 sizeof(struct addr_ctrl_blk),
930 FLASH_OPT_RMW_COMMIT);
931 if (rval != QLA_SUCCESS) {
932 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
933 __func__);
934 rval = -EIO;
935 goto exit_init_fw_cb;
936 }
937
938 qla4xxx_disable_acb(ha);
939
940 qla4xxx_initcb_to_acb(init_fw_cb);
941
942 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
943 if (rval != QLA_SUCCESS) {
944 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
945 __func__);
946 rval = -EIO;
947 goto exit_init_fw_cb;
948 }
949
950 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
951 qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
952 init_fw_cb_dma);
953
954exit_init_fw_cb:
955 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
956 init_fw_cb, init_fw_cb_dma);
957
958 return rval;
959}
960
b3a271a9 961static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
afaf5a2d
DS		 962 enum iscsi_param param, char *buf)
963{
b3a271a9
MR		 964 struct iscsi_conn *conn;
965 struct qla_conn *qla_conn;
966 struct sockaddr *dst_addr;
967 int len = 0;
afaf5a2d 968
b3a271a9
MR		 969 conn = cls_conn->dd_data;
970 qla_conn = conn->dd_data;
971 dst_addr = &qla_conn->qla_ep->dst_addr;
afaf5a2d
DS		 972
973 switch (param) {
974 case ISCSI_PARAM_CONN_PORT:
afaf5a2d 975 case ISCSI_PARAM_CONN_ADDRESS:
b3a271a9
MR		 976 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
977 dst_addr, param, buf);
afaf5a2d 978 default:
b3a271a9 979 return iscsi_conn_get_param(cls_conn, param, buf);
afaf5a2d
DS		 980 }
981
982 return len;
b3a271a9 983
afaf5a2d
DS		 984}
985
13483730
MC		 986int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
987{
988 uint32_t mbx_sts = 0;
989 uint16_t tmp_ddb_index;
990 int ret;
991
992get_ddb_index:
993 tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
994
995 if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
996 DEBUG2(ql4_printk(KERN_INFO, ha,
997 "Free DDB index not available\n"));
998 ret = QLA_ERROR;
999 goto exit_get_ddb_index;
1000 }
1001
1002 if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1003 goto get_ddb_index;
1004
1005 DEBUG2(ql4_printk(KERN_INFO, ha,
1006 "Found a free DDB index at %d\n", tmp_ddb_index));
1007 ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1008 if (ret == QLA_ERROR) {
1009 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1010 ql4_printk(KERN_INFO, ha,
1011 "DDB index = %d not available trying next\n",
1012 tmp_ddb_index);
1013 goto get_ddb_index;
1014 }
1015 DEBUG2(ql4_printk(KERN_INFO, ha,
1016 "Free FW DDB not available\n"));
1017 }
1018
1019 *ddb_index = tmp_ddb_index;
1020
1021exit_get_ddb_index:
1022 return ret;
1023}
1024
1025static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1026 struct ddb_entry *ddb_entry,
1027 char *existing_ipaddr,
1028 char *user_ipaddr)
1029{
1030 uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1031 char formatted_ipaddr[DDB_IPADDR_LEN];
1032 int status = QLA_SUCCESS, ret = 0;
1033
1034 if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1035 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1036 '\0', NULL);
1037 if (ret == 0) {
1038 status = QLA_ERROR;
1039 goto out_match;
1040 }
1041 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1042 } else {
1043 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1044 '\0', NULL);
1045 if (ret == 0) {
1046 status = QLA_ERROR;
1047 goto out_match;
1048 }
1049 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1050 }
1051
1052 if (strcmp(existing_ipaddr, formatted_ipaddr))
1053 status = QLA_ERROR;
1054
1055out_match:
1056 return status;
1057}
1058
1059static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1060 struct iscsi_cls_conn *cls_conn)
1061{
1062 int idx = 0, max_ddbs, rval;
1063 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1064 struct iscsi_session *sess, *existing_sess;
1065 struct iscsi_conn *conn, *existing_conn;
1066 struct ddb_entry *ddb_entry;
1067
1068 sess = cls_sess->dd_data;
1069 conn = cls_conn->dd_data;
1070
1071 if (sess->targetname == NULL ||
1072 conn->persistent_address == NULL ||
1073 conn->persistent_port == 0)
1074 return QLA_ERROR;
1075
1076 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1077 MAX_DEV_DB_ENTRIES;
1078
1079 for (idx = 0; idx < max_ddbs; idx++) {
1080 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1081 if (ddb_entry == NULL)
1082 continue;
1083
1084 if (ddb_entry->ddb_type != FLASH_DDB)
1085 continue;
1086
1087 existing_sess = ddb_entry->sess->dd_data;
1088 existing_conn = ddb_entry->conn->dd_data;
1089
1090 if (existing_sess->targetname == NULL ||
1091 existing_conn->persistent_address == NULL ||
1092 existing_conn->persistent_port == 0)
1093 continue;
1094
1095 DEBUG2(ql4_printk(KERN_INFO, ha,
1096 "IQN = %s User IQN = %s\n",
1097 existing_sess->targetname,
1098 sess->targetname));
1099
1100 DEBUG2(ql4_printk(KERN_INFO, ha,
1101 "IP = %s User IP = %s\n",
1102 existing_conn->persistent_address,
1103 conn->persistent_address));
1104
1105 DEBUG2(ql4_printk(KERN_INFO, ha,
1106 "Port = %d User Port = %d\n",
1107 existing_conn->persistent_port,
1108 conn->persistent_port));
1109
1110 if (strcmp(existing_sess->targetname, sess->targetname))
1111 continue;
1112 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1113 existing_conn->persistent_address,
1114 conn->persistent_address);
1115 if (rval == QLA_ERROR)
1116 continue;
1117 if (existing_conn->persistent_port != conn->persistent_port)
1118 continue;
1119 break;
1120 }
1121
1122 if (idx == max_ddbs)
1123 return QLA_ERROR;
1124
1125 DEBUG2(ql4_printk(KERN_INFO, ha,
1126 "Match found in fwdb sessions\n"));
1127 return QLA_SUCCESS;
1128}
1129
b3a271a9
MR		 1130static struct iscsi_cls_session *
1131qla4xxx_session_create(struct iscsi_endpoint *ep,
1132 uint16_t cmds_max, uint16_t qdepth,
1133 uint32_t initial_cmdsn)
1134{
1135 struct iscsi_cls_session *cls_sess;
1136 struct scsi_qla_host *ha;
1137 struct qla_endpoint *qla_ep;
1138 struct ddb_entry *ddb_entry;
13483730 1139 uint16_t ddb_index;
b3a271a9
MR		 1140 struct iscsi_session *sess;
1141 struct sockaddr *dst_addr;
1142 int ret;
1143
1144 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1145 if (!ep) {
1146 printk(KERN_ERR "qla4xxx: missing ep.\n");
1147 return NULL;
1148 }
1149
1150 qla_ep = ep->dd_data;
1151 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1152 ha = to_qla_host(qla_ep->host);
736cf369 1153
13483730
MC		 1154 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1155 if (ret == QLA_ERROR)
b3a271a9 1156 return NULL;
b3a271a9
MR		 1157
1158 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1159 cmds_max, sizeof(struct ddb_entry),
1160 sizeof(struct ql4_task_data),
1161 initial_cmdsn, ddb_index);
1162 if (!cls_sess)
1163 return NULL;
1164
1165 sess = cls_sess->dd_data;
1166 ddb_entry = sess->dd_data;
1167 ddb_entry->fw_ddb_index = ddb_index;
1168 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1169 ddb_entry->ha = ha;
1170 ddb_entry->sess = cls_sess;
13483730
MC		 1171 ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1172 ddb_entry->ddb_change = qla4xxx_ddb_change;
b3a271a9
MR		 1173 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1174 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1175 ha->tot_ddbs++;
1176
1177 return cls_sess;
1178}
1179
1180static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1181{
1182 struct iscsi_session *sess;
1183 struct ddb_entry *ddb_entry;
1184 struct scsi_qla_host *ha;
1185 unsigned long flags;
1186
1187 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1188 sess = cls_sess->dd_data;
1189 ddb_entry = sess->dd_data;
1190 ha = ddb_entry->ha;
1191
736cf369
MR		 1192 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1193
b3a271a9
MR		 1194 spin_lock_irqsave(&ha->hardware_lock, flags);
1195 qla4xxx_free_ddb(ha, ddb_entry);
1196 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1197 iscsi_session_teardown(cls_sess);
1198}
1199
b3a271a9
MR		 1200static struct iscsi_cls_conn *
1201qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1202{
1203 struct iscsi_cls_conn *cls_conn;
1204 struct iscsi_session *sess;
1205 struct ddb_entry *ddb_entry;
1206
1207 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1208 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1209 conn_idx);
ff1d0319
MC		 1210 if (!cls_conn)
1211 return NULL;
1212
b3a271a9
MR		 1213 sess = cls_sess->dd_data;
1214 ddb_entry = sess->dd_data;
1215 ddb_entry->conn = cls_conn;
1216
1217 return cls_conn;
1218}
1219
1220static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1221 struct iscsi_cls_conn *cls_conn,
1222 uint64_t transport_fd, int is_leading)
1223{
1224 struct iscsi_conn *conn;
1225 struct qla_conn *qla_conn;
1226 struct iscsi_endpoint *ep;
1227
1228 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1229
1230 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1231 return -EINVAL;
1232 ep = iscsi_lookup_endpoint(transport_fd);
1233 conn = cls_conn->dd_data;
1234 qla_conn = conn->dd_data;
1235 qla_conn->qla_ep = ep->dd_data;
1236 return 0;
1237}
1238
1239static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1240{
1241 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1242 struct iscsi_session *sess;
1243 struct ddb_entry *ddb_entry;
1244 struct scsi_qla_host *ha;
13483730 1245 struct dev_db_entry *fw_ddb_entry = NULL;
b3a271a9 1246 dma_addr_t fw_ddb_entry_dma;
b3a271a9
MR		 1247 uint32_t mbx_sts = 0;
1248 int ret = 0;
1249 int status = QLA_SUCCESS;
1250
1251 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1252 sess = cls_sess->dd_data;
1253 ddb_entry = sess->dd_data;
1254 ha = ddb_entry->ha;
1255
13483730
MC		 1256 /* Check if we have matching FW DDB, if yes then do not
1257 * login to this target. This could cause target to logout previous
1258 * connection
1259 */
1260 ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1261 if (ret == QLA_SUCCESS) {
1262 ql4_printk(KERN_INFO, ha,
1263 "Session already exist in FW.\n");
1264 ret = -EEXIST;
1265 goto exit_conn_start;
1266 }
1267
b3a271a9
MR		 1268 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1269 &fw_ddb_entry_dma, GFP_KERNEL);
1270 if (!fw_ddb_entry) {
1271 ql4_printk(KERN_ERR, ha,
1272 "%s: Unable to allocate dma buffer\n", __func__);
13483730
MC		 1273 ret = -ENOMEM;
1274 goto exit_conn_start;
b3a271a9
MR		 1275 }
1276
1277 ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1278 if (ret) {
1279 /* If iscsid is stopped and started then no need to do
1280 * set param again since ddb state will be already
1281 * active and FW does not allow set ddb to an
1282 * active session.
1283 */
1284 if (mbx_sts)
1285 if (ddb_entry->fw_ddb_device_state ==
f922da79 1286 DDB_DS_SESSION_ACTIVE) {
13483730 1287 ddb_entry->unblock_sess(ddb_entry->sess);
b3a271a9 1288 goto exit_set_param;
f922da79 1289 }
b3a271a9
MR		 1290
1291 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1292 __func__, ddb_entry->fw_ddb_index);
1293 goto exit_conn_start;
1294 }
1295
1296 status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1297 if (status == QLA_ERROR) {
0e7e8501
MR		 1298 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1299 sess->targetname);
b3a271a9
MR		 1300 ret = -EINVAL;
1301 goto exit_conn_start;
1302 }
1303
98270ab4
MR		 1304 if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1305 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1306
1307 DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1308 ddb_entry->fw_ddb_device_state));
b3a271a9
MR		 1309
1310exit_set_param:
b3a271a9
MR		 1311 ret = 0;
1312
1313exit_conn_start:
13483730
MC		 1314 if (fw_ddb_entry)
1315 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1316 fw_ddb_entry, fw_ddb_entry_dma);
b3a271a9
MR		 1317 return ret;
1318}
1319
1320static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1321{
1322 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1323 struct iscsi_session *sess;
1324 struct scsi_qla_host *ha;
1325 struct ddb_entry *ddb_entry;
1326 int options;
1327
1328 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1329 sess = cls_sess->dd_data;
1330 ddb_entry = sess->dd_data;
1331 ha = ddb_entry->ha;
1332
1333 options = LOGOUT_OPTION_CLOSE_SESSION;
1334 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1335 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
b3a271a9
MR		 1336}
1337
1338static void qla4xxx_task_work(struct work_struct *wdata)
1339{
1340 struct ql4_task_data *task_data;
1341 struct scsi_qla_host *ha;
1342 struct passthru_status *sts;
1343 struct iscsi_task *task;
1344 struct iscsi_hdr *hdr;
1345 uint8_t *data;
1346 uint32_t data_len;
1347 struct iscsi_conn *conn;
1348 int hdr_len;
1349 itt_t itt;
1350
1351 task_data = container_of(wdata, struct ql4_task_data, task_work);
1352 ha = task_data->ha;
1353 task = task_data->task;
1354 sts = &task_data->sts;
1355 hdr_len = sizeof(struct iscsi_hdr);
1356
1357 DEBUG3(printk(KERN_INFO "Status returned\n"));
1358 DEBUG3(qla4xxx_dump_buffer(sts, 64));
1359 DEBUG3(printk(KERN_INFO "Response buffer"));
1360 DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1361
1362 conn = task->conn;
1363
1364 switch (sts->completionStatus) {
1365 case PASSTHRU_STATUS_COMPLETE:
1366 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1367 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1368 itt = sts->handle;
1369 hdr->itt = itt;
1370 data = task_data->resp_buffer + hdr_len;
1371 data_len = task_data->resp_len - hdr_len;
1372 iscsi_complete_pdu(conn, hdr, data, data_len);
1373 break;
1374 default:
1375 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1376 sts->completionStatus);
1377 break;
1378 }
1379 return;
1380}
1381
1382static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1383{
1384 struct ql4_task_data *task_data;
1385 struct iscsi_session *sess;
1386 struct ddb_entry *ddb_entry;
1387 struct scsi_qla_host *ha;
1388 int hdr_len;
1389
1390 sess = task->conn->session;
1391 ddb_entry = sess->dd_data;
1392 ha = ddb_entry->ha;
1393 task_data = task->dd_data;
1394 memset(task_data, 0, sizeof(struct ql4_task_data));
1395
1396 if (task->sc) {
1397 ql4_printk(KERN_INFO, ha,
1398 "%s: SCSI Commands not implemented\n", __func__);
1399 return -EINVAL;
1400 }
1401
1402 hdr_len = sizeof(struct iscsi_hdr);
1403 task_data->ha = ha;
1404 task_data->task = task;
1405
1406 if (task->data_count) {
1407 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1408 task->data_count,
1409 PCI_DMA_TODEVICE);
1410 }
1411
1412 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1413 __func__, task->conn->max_recv_dlength, hdr_len));
1414
69ca216e 1415 task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
b3a271a9
MR		 1416 task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1417 task_data->resp_len,
1418 &task_data->resp_dma,
1419 GFP_ATOMIC);
1420 if (!task_data->resp_buffer)
1421 goto exit_alloc_pdu;
1422
69ca216e 1423 task_data->req_len = task->data_count + hdr_len;
b3a271a9 1424 task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
69ca216e 1425 task_data->req_len,
b3a271a9
MR		 1426 &task_data->req_dma,
1427 GFP_ATOMIC);
1428 if (!task_data->req_buffer)
1429 goto exit_alloc_pdu;
1430
1431 task->hdr = task_data->req_buffer;
1432
1433 INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1434
1435 return 0;
1436
1437exit_alloc_pdu:
1438 if (task_data->resp_buffer)
1439 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1440 task_data->resp_buffer, task_data->resp_dma);
1441
1442 if (task_data->req_buffer)
69ca216e 1443 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
b3a271a9
MR		 1444 task_data->req_buffer, task_data->req_dma);
1445 return -ENOMEM;
1446}
1447
1448static void qla4xxx_task_cleanup(struct iscsi_task *task)
1449{
1450 struct ql4_task_data *task_data;
1451 struct iscsi_session *sess;
1452 struct ddb_entry *ddb_entry;
1453 struct scsi_qla_host *ha;
1454 int hdr_len;
1455
1456 hdr_len = sizeof(struct iscsi_hdr);
1457 sess = task->conn->session;
1458 ddb_entry = sess->dd_data;
1459 ha = ddb_entry->ha;
1460 task_data = task->dd_data;
1461
1462 if (task->data_count) {
1463 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1464 task->data_count, PCI_DMA_TODEVICE);
1465 }
1466
1467 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1468 __func__, task->conn->max_recv_dlength, hdr_len));
1469
1470 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1471 task_data->resp_buffer, task_data->resp_dma);
69ca216e 1472 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
b3a271a9
MR		 1473 task_data->req_buffer, task_data->req_dma);
1474 return;
1475}
1476
1477static int qla4xxx_task_xmit(struct iscsi_task *task)
1478{
1479 struct scsi_cmnd *sc = task->sc;
1480 struct iscsi_session *sess = task->conn->session;
1481 struct ddb_entry *ddb_entry = sess->dd_data;
1482 struct scsi_qla_host *ha = ddb_entry->ha;
1483
1484 if (!sc)
1485 return qla4xxx_send_passthru0(task);
1486
1487 ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1488 __func__);
1489 return -ENOSYS;
1490}
1491
13483730
MC		 1492static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1493 struct dev_db_entry *fw_ddb_entry,
1494 struct iscsi_cls_session *cls_sess,
1495 struct iscsi_cls_conn *cls_conn)
1496{
1497 int buflen = 0;
1498 struct iscsi_session *sess;
1499 struct iscsi_conn *conn;
1500 char ip_addr[DDB_IPADDR_LEN];
1501 uint16_t options = 0;
1502
1503 sess = cls_sess->dd_data;
1504 conn = cls_conn->dd_data;
1505
1506 conn->max_recv_dlength = BYTE_UNITS *
1507 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1508
1509 conn->max_xmit_dlength = BYTE_UNITS *
1510 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1511
1512 sess->initial_r2t_en =
1513 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1514
1515 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1516
1517 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1518
1519 sess->first_burst = BYTE_UNITS *
1520 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1521
1522 sess->max_burst = BYTE_UNITS *
1523 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1524
1525 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1526
1527 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1528
1529 conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1530
1531 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1532
1533 options = le16_to_cpu(fw_ddb_entry->options);
1534 if (options & DDB_OPT_IPV6_DEVICE)
1535 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1536 else
1537 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1538
1539 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1540 (char *)fw_ddb_entry->iscsi_name, buflen);
1541 iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1542 (char *)ha->name_string, buflen);
1543 iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1544 (char *)ip_addr, buflen);
1545}
1546
1547void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1548 struct ddb_entry *ddb_entry)
1549{
1550 struct iscsi_cls_session *cls_sess;
1551 struct iscsi_cls_conn *cls_conn;
1552 uint32_t ddb_state;
1553 dma_addr_t fw_ddb_entry_dma;
1554 struct dev_db_entry *fw_ddb_entry;
1555
1556 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1557 &fw_ddb_entry_dma, GFP_KERNEL);
1558 if (!fw_ddb_entry) {
1559 ql4_printk(KERN_ERR, ha,
1560 "%s: Unable to allocate dma buffer\n", __func__);
1561 goto exit_session_conn_fwddb_param;
1562 }
1563
1564 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
1565 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
1566 NULL, NULL, NULL) == QLA_ERROR) {
1567 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1568 "get_ddb_entry for fw_ddb_index %d\n",
1569 ha->host_no, __func__,
1570 ddb_entry->fw_ddb_index));
1571 goto exit_session_conn_fwddb_param;
1572 }
1573
1574 cls_sess = ddb_entry->sess;
1575
1576 cls_conn = ddb_entry->conn;
1577
1578 /* Update params */
1579 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
1580
1581exit_session_conn_fwddb_param:
1582 if (fw_ddb_entry)
1583 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1584 fw_ddb_entry, fw_ddb_entry_dma);
1585}
1586
b3a271a9
MR		 1587void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
1588 struct ddb_entry *ddb_entry)
1589{
1590 struct iscsi_cls_session *cls_sess;
1591 struct iscsi_cls_conn *cls_conn;
1592 struct iscsi_session *sess;
1593 struct iscsi_conn *conn;
1594 uint32_t ddb_state;
1595 dma_addr_t fw_ddb_entry_dma;
1596 struct dev_db_entry *fw_ddb_entry;
1597
1598 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1599 &fw_ddb_entry_dma, GFP_KERNEL);
1600 if (!fw_ddb_entry) {
1601 ql4_printk(KERN_ERR, ha,
1602 "%s: Unable to allocate dma buffer\n", __func__);
13483730 1603 goto exit_session_conn_param;
b3a271a9
MR		 1604 }
1605
1606 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
1607 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
1608 NULL, NULL, NULL) == QLA_ERROR) {
1609 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1610 "get_ddb_entry for fw_ddb_index %d\n",
1611 ha->host_no, __func__,
1612 ddb_entry->fw_ddb_index));
13483730 1613 goto exit_session_conn_param;
b3a271a9
MR		 1614 }
1615
1616 cls_sess = ddb_entry->sess;
1617 sess = cls_sess->dd_data;
1618
1619 cls_conn = ddb_entry->conn;
1620 conn = cls_conn->dd_data;
1621
13483730
MC		 1622 /* Update timers after login */
1623 ddb_entry->default_relogin_timeout =
1624 le16_to_cpu(fw_ddb_entry->def_timeout);
1625 ddb_entry->default_time2wait =
1626 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1627
b3a271a9
MR		 1628 /* Update params */
1629 conn->max_recv_dlength = BYTE_UNITS *
1630 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1631
1632 conn->max_xmit_dlength = BYTE_UNITS *
1633 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1634
1635 sess->initial_r2t_en =
1636 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1637
1638 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1639
1640 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1641
1642 sess->first_burst = BYTE_UNITS *
1643 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1644
1645 sess->max_burst = BYTE_UNITS *
1646 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1647
1648 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1649
1650 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1651
1652 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1653
1654 memcpy(sess->initiatorname, ha->name_string,
1655 min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
13483730
MC		 1656
1657exit_session_conn_param:
1658 if (fw_ddb_entry)
1659 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1660 fw_ddb_entry, fw_ddb_entry_dma);
b3a271a9
MR		 1661}
1662
afaf5a2d
DS		 1663/*
1664 * Timer routines
1665 */
1666
1667static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
1668 unsigned long interval)
1669{
1670 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
1671 __func__, ha->host->host_no));
1672 init_timer(&ha->timer);
1673 ha->timer.expires = jiffies + interval * HZ;
1674 ha->timer.data = (unsigned long)ha;
1675 ha->timer.function = (void (*)(unsigned long))func;
1676 add_timer(&ha->timer);
1677 ha->timer_active = 1;
1678}
1679
1680static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
1681{
1682 del_timer_sync(&ha->timer);
1683 ha->timer_active = 0;
1684}
1685
1686/***
b3a271a9
MR		 1687 * qla4xxx_mark_device_missing - blocks the session
1688 * @cls_session: Pointer to the session to be blocked
afaf5a2d
DS		 1689 * @ddb_entry: Pointer to device database entry
1690 *
f4f5df23 1691 * This routine marks a device missing and close connection.
afaf5a2d 1692 **/
b3a271a9 1693void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
afaf5a2d 1694{
b3a271a9 1695 iscsi_block_session(cls_session);
afaf5a2d
DS		 1696}
1697
f4f5df23
VC		 1698/**
1699 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
1700 * @ha: Pointer to host adapter structure.
1701 *
1702 * This routine marks a device missing and resets the relogin retry count.
1703 **/
1704void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
1705{
b3a271a9 1706 iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
f4f5df23
VC		 1707}
1708
afaf5a2d
DS		 1709static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
1710 struct ddb_entry *ddb_entry,
8f0722ca 1711 struct scsi_cmnd *cmd)
afaf5a2d
DS		 1712{
1713 struct srb *srb;
1714
1715 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
1716 if (!srb)
1717 return srb;
1718
09a0f719 1719 kref_init(&srb->srb_ref);
afaf5a2d
DS		 1720 srb->ha = ha;
1721 srb->ddb = ddb_entry;
1722 srb->cmd = cmd;
1723 srb->flags = 0;
5369887a 1724 CMD_SP(cmd) = (void *)srb;
afaf5a2d
DS		 1725
1726 return srb;
1727}
1728
1729static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
1730{
1731 struct scsi_cmnd *cmd = srb->cmd;
1732
1733 if (srb->flags & SRB_DMA_VALID) {
5f7186c8 1734 scsi_dma_unmap(cmd);
afaf5a2d
DS		 1735 srb->flags &= ~SRB_DMA_VALID;
1736 }
5369887a 1737 CMD_SP(cmd) = NULL;
afaf5a2d
DS		 1738}
1739
09a0f719 1740void qla4xxx_srb_compl(struct kref *ref)
afaf5a2d 1741{
09a0f719 1742 struct srb *srb = container_of(ref, struct srb, srb_ref);
afaf5a2d 1743 struct scsi_cmnd *cmd = srb->cmd;
09a0f719 1744 struct scsi_qla_host *ha = srb->ha;
afaf5a2d
DS		 1745
1746 qla4xxx_srb_free_dma(ha, srb);
1747
1748 mempool_free(srb, ha->srb_mempool);
1749
1750 cmd->scsi_done(cmd);
1751}
1752
1753/**
1754 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
8f0722ca 1755 * @host: scsi host
afaf5a2d 1756 * @cmd: Pointer to Linux's SCSI command structure
afaf5a2d
DS		 1757 *
1758 * Remarks:
1759 * This routine is invoked by Linux to send a SCSI command to the driver.
1760 * The mid-level driver tries to ensure that queuecommand never gets
1761 * invoked concurrently with itself or the interrupt handler (although
1762 * the interrupt handler may call this routine as part of request-
1763 * completion handling). Unfortunely, it sometimes calls the scheduler
1764 * in interrupt context which is a big NO! NO!.
1765 **/
8f0722ca 1766static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
afaf5a2d 1767{
8f0722ca 1768 struct scsi_qla_host *ha = to_qla_host(host);
afaf5a2d 1769 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7fb1921b 1770 struct iscsi_cls_session *sess = ddb_entry->sess;
afaf5a2d
DS		 1771 struct srb *srb;
1772 int rval;
1773
2232be0d
LC		 1774 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
1775 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
1776 cmd->result = DID_NO_CONNECT << 16;
1777 else
1778 cmd->result = DID_REQUEUE << 16;
1779 goto qc_fail_command;
1780 }
1781
7fb1921b
MC		 1782 if (!sess) {
1783 cmd->result = DID_IMM_RETRY << 16;
1784 goto qc_fail_command;
1785 }
1786
1787 rval = iscsi_session_chkready(sess);
1788 if (rval) {
1789 cmd->result = rval;
1790 goto qc_fail_command;
1791 }
1792
f4f5df23
VC		 1793 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
1794 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
1795 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
1796 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
1797 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
1798 !test_bit(AF_ONLINE, &ha->flags) ||
b3a271a9 1799 !test_bit(AF_LINK_UP, &ha->flags) ||
f4f5df23 1800 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
477ffb9d
DS		 1801 goto qc_host_busy;
1802
8f0722ca 1803 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
afaf5a2d 1804 if (!srb)
8f0722ca 1805 goto qc_host_busy;
afaf5a2d
DS		 1806
1807 rval = qla4xxx_send_command_to_isp(ha, srb);
1808 if (rval != QLA_SUCCESS)
1809 goto qc_host_busy_free_sp;
1810
afaf5a2d
DS		 1811 return 0;
1812
1813qc_host_busy_free_sp:
1814 qla4xxx_srb_free_dma(ha, srb);
1815 mempool_free(srb, ha->srb_mempool);
1816
afaf5a2d
DS		 1817qc_host_busy:
1818 return SCSI_MLQUEUE_HOST_BUSY;
1819
1820qc_fail_command:
8f0722ca 1821 cmd->scsi_done(cmd);
afaf5a2d
DS		 1822
1823 return 0;
1824}
1825
1826/**
1827 * qla4xxx_mem_free - frees memory allocated to adapter
1828 * @ha: Pointer to host adapter structure.
1829 *
1830 * Frees memory previously allocated by qla4xxx_mem_alloc
1831 **/
1832static void qla4xxx_mem_free(struct scsi_qla_host *ha)
1833{
1834 if (ha->queues)
1835 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
1836 ha->queues_dma);
1837
1838 ha->queues_len = 0;
1839 ha->queues = NULL;
1840 ha->queues_dma = 0;
1841 ha->request_ring = NULL;
1842 ha->request_dma = 0;
1843 ha->response_ring = NULL;
1844 ha->response_dma = 0;
1845 ha->shadow_regs = NULL;
1846 ha->shadow_regs_dma = 0;
1847
1848 /* Free srb pool. */
1849 if (ha->srb_mempool)
1850 mempool_destroy(ha->srb_mempool);
1851
1852 ha->srb_mempool = NULL;
1853
b3a271a9
MR		 1854 if (ha->chap_dma_pool)
1855 dma_pool_destroy(ha->chap_dma_pool);
1856
4549415a
LC		 1857 if (ha->chap_list)
1858 vfree(ha->chap_list);
1859 ha->chap_list = NULL;
1860
13483730
MC		 1861 if (ha->fw_ddb_dma_pool)
1862 dma_pool_destroy(ha->fw_ddb_dma_pool);
1863
afaf5a2d 1864 /* release io space registers */
f4f5df23
VC		 1865 if (is_qla8022(ha)) {
1866 if (ha->nx_pcibase)
1867 iounmap(
1868 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
f4f5df23 1869 } else if (ha->reg)
afaf5a2d
DS		 1870 iounmap(ha->reg);
1871 pci_release_regions(ha->pdev);
1872}
1873
1874/**
1875 * qla4xxx_mem_alloc - allocates memory for use by adapter.
1876 * @ha: Pointer to host adapter structure
1877 *
1878 * Allocates DMA memory for request and response queues. Also allocates memory
1879 * for srbs.
1880 **/
1881static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
1882{
1883 unsigned long align;
1884
1885 /* Allocate contiguous block of DMA memory for queues. */
1886 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
1887 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
1888 sizeof(struct shadow_regs) +
1889 MEM_ALIGN_VALUE +
1890 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
1891 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
1892 &ha->queues_dma, GFP_KERNEL);
1893 if (ha->queues == NULL) {
c2660df3
VC		 1894 ql4_printk(KERN_WARNING, ha,
1895 "Memory Allocation failed - queues.\n");
afaf5a2d
DS		 1896
1897 goto mem_alloc_error_exit;
1898 }
1899 memset(ha->queues, 0, ha->queues_len);
1900
1901 /*
1902 * As per RISC alignment requirements -- the bus-address must be a
1903 * multiple of the request-ring size (in bytes).
1904 */
1905 align = 0;
1906 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
1907 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
1908 (MEM_ALIGN_VALUE - 1));
1909
1910 /* Update request and response queue pointers. */
1911 ha->request_dma = ha->queues_dma + align;
1912 ha->request_ring = (struct queue_entry *) (ha->queues + align);
1913 ha->response_dma = ha->queues_dma + align +
1914 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
1915 ha->response_ring = (struct queue_entry *) (ha->queues + align +
1916 (REQUEST_QUEUE_DEPTH *
1917 QUEUE_SIZE));
1918 ha->shadow_regs_dma = ha->queues_dma + align +
1919 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
1920 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
1921 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
1922 (REQUEST_QUEUE_DEPTH *
1923 QUEUE_SIZE) +
1924 (RESPONSE_QUEUE_DEPTH *
1925 QUEUE_SIZE));
1926
1927 /* Allocate memory for srb pool. */
1928 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
1929 mempool_free_slab, srb_cachep);
1930 if (ha->srb_mempool == NULL) {
c2660df3
VC		 1931 ql4_printk(KERN_WARNING, ha,
1932 "Memory Allocation failed - SRB Pool.\n");
afaf5a2d
DS		 1933
1934 goto mem_alloc_error_exit;
1935 }
1936
b3a271a9
MR		 1937 ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
1938 CHAP_DMA_BLOCK_SIZE, 8, 0);
1939
1940 if (ha->chap_dma_pool == NULL) {
1941 ql4_printk(KERN_WARNING, ha,
1942 "%s: chap_dma_pool allocation failed..\n", __func__);
1943 goto mem_alloc_error_exit;
1944 }
1945
13483730
MC		 1946 ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
1947 DDB_DMA_BLOCK_SIZE, 8, 0);
1948
1949 if (ha->fw_ddb_dma_pool == NULL) {
1950 ql4_printk(KERN_WARNING, ha,
1951 "%s: fw_ddb_dma_pool allocation failed..\n",
1952 __func__);
1953 goto mem_alloc_error_exit;
1954 }
1955
afaf5a2d
DS		 1956 return QLA_SUCCESS;
1957
1958mem_alloc_error_exit:
1959 qla4xxx_mem_free(ha);
1960 return QLA_ERROR;
1961}
1962
f4f5df23
VC		 1963/**
1964 * qla4_8xxx_check_fw_alive - Check firmware health
1965 * @ha: Pointer to host adapter structure.
1966 *
1967 * Context: Interrupt
1968 **/
1969static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
1970{
1971 uint32_t fw_heartbeat_counter, halt_status;
1972
1973 fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
2232be0d
LC		 1974 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
1975 if (fw_heartbeat_counter == 0xffffffff) {
1976 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
1977 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
1978 ha->host_no, __func__));
1979 return;
1980 }
f4f5df23
VC		 1981
1982 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
1983 ha->seconds_since_last_heartbeat++;
1984 /* FW not alive after 2 seconds */
1985 if (ha->seconds_since_last_heartbeat == 2) {
1986 ha->seconds_since_last_heartbeat = 0;
1987 halt_status = qla4_8xxx_rd_32(ha,
68d92ebf
VC		 1988 QLA82XX_PEG_HALT_STATUS1);
1989
1990 ql4_printk(KERN_INFO, ha,
1991 "scsi(%ld): %s, Dumping hw/fw registers:\n "
1992 " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
1993 " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
1994 " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
1995 " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
1996 ha->host_no, __func__, halt_status,
1997 qla4_8xxx_rd_32(ha,
1998 QLA82XX_PEG_HALT_STATUS2),
1999 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
2000 0x3c),
2001 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
2002 0x3c),
2003 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
2004 0x3c),
2005 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
2006 0x3c),
2007 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
2008 0x3c));
21033639 2009
f4f5df23
VC		 2010 /* Since we cannot change dev_state in interrupt
2011 * context, set appropriate DPC flag then wakeup
2012 * DPC */
2013 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2014 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2015 else {
2016 printk("scsi%ld: %s: detect abort needed!\n",
2017 ha->host_no, __func__);
2018 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2019 }
2020 qla4xxx_wake_dpc(ha);
21033639 2021 qla4xxx_mailbox_premature_completion(ha);
f4f5df23 2022 }
99457d75
LC		 2023 } else
2024 ha->seconds_since_last_heartbeat = 0;
2025
f4f5df23
VC		 2026 ha->fw_heartbeat_counter = fw_heartbeat_counter;
2027}
2028
2029/**
2030 * qla4_8xxx_watchdog - Poll dev state
2031 * @ha: Pointer to host adapter structure.
2032 *
2033 * Context: Interrupt
2034 **/
2035void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2036{
2037 uint32_t dev_state;
2038
2039 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
2040
2041 /* don't poll if reset is going on */
d56a1f7b
LC		 2042 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2043 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
977f46a4 2044 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
f4f5df23
VC		 2045 if (dev_state == QLA82XX_DEV_NEED_RESET &&
2046 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
3930b8c1
VC		 2047 if (!ql4xdontresethba) {
2048 ql4_printk(KERN_INFO, ha, "%s: HW State: "
2049 "NEED RESET!\n", __func__);
2050 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2051 qla4xxx_wake_dpc(ha);
2052 qla4xxx_mailbox_premature_completion(ha);
2053 }
f4f5df23
VC		 2054 } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
2055 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3930b8c1
VC		 2056 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2057 __func__);
f4f5df23
VC		 2058 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2059 qla4xxx_wake_dpc(ha);
2060 } else {
2061 /* Check firmware health */
2062 qla4_8xxx_check_fw_alive(ha);
2063 }
2064 }
2065}
2066
13483730
MC		 2067void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2068{
2069 struct iscsi_session *sess;
2070 struct ddb_entry *ddb_entry;
2071 struct scsi_qla_host *ha;
2072
2073 sess = cls_sess->dd_data;
2074 ddb_entry = sess->dd_data;
2075 ha = ddb_entry->ha;
2076
2077 if (!(ddb_entry->ddb_type == FLASH_DDB))
2078 return;
2079
2080 if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2081 !iscsi_is_session_online(cls_sess)) {
2082 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2083 INVALID_ENTRY) {
2084 if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2085 0) {
2086 atomic_set(&ddb_entry->retry_relogin_timer,
2087 INVALID_ENTRY);
2088 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2089 set_bit(DF_RELOGIN, &ddb_entry->flags);
2090 DEBUG2(ql4_printk(KERN_INFO, ha,
2091 "%s: index [%d] login device\n",
2092 __func__, ddb_entry->fw_ddb_index));
2093 } else
2094 atomic_dec(&ddb_entry->retry_relogin_timer);
2095 }
2096 }
2097
2098 /* Wait for relogin to timeout */
2099 if (atomic_read(&ddb_entry->relogin_timer) &&
2100 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2101 /*
2102 * If the relogin times out and the device is
2103 * still NOT ONLINE then try and relogin again.
2104 */
2105 if (!iscsi_is_session_online(cls_sess)) {
2106 /* Reset retry relogin timer */
2107 atomic_inc(&ddb_entry->relogin_retry_count);
2108 DEBUG2(ql4_printk(KERN_INFO, ha,
2109 "%s: index[%d] relogin timed out-retrying"
2110 " relogin (%d), retry (%d)\n", __func__,
2111 ddb_entry->fw_ddb_index,
2112 atomic_read(&ddb_entry->relogin_retry_count),
2113 ddb_entry->default_time2wait + 4));
2114 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2115 atomic_set(&ddb_entry->retry_relogin_timer,
2116 ddb_entry->default_time2wait + 4);
2117 }
2118 }
2119}
2120
afaf5a2d
DS		 2121/**
2122 * qla4xxx_timer - checks every second for work to do.
2123 * @ha: Pointer to host adapter structure.
2124 **/
2125static void qla4xxx_timer(struct scsi_qla_host *ha)
2126{
afaf5a2d 2127 int start_dpc = 0;
2232be0d
LC		 2128 uint16_t w;
2129
13483730
MC		 2130 iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2131
2232be0d
LC		 2132 /* If we are in the middle of AER/EEH processing
2133 * skip any processing and reschedule the timer
2134 */
2135 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2136 mod_timer(&ha->timer, jiffies + HZ);
2137 return;
2138 }
2139
2140 /* Hardware read to trigger an EEH error during mailbox waits. */
2141 if (!pci_channel_offline(ha->pdev))
2142 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
afaf5a2d 2143
f4f5df23
VC		 2144 if (is_qla8022(ha)) {
2145 qla4_8xxx_watchdog(ha);
2146 }
2147
f4f5df23
VC		 2148 if (!is_qla8022(ha)) {
2149 /* Check for heartbeat interval. */
2150 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2151 ha->heartbeat_interval != 0) {
2152 ha->seconds_since_last_heartbeat++;
2153 if (ha->seconds_since_last_heartbeat >
2154 ha->heartbeat_interval + 2)
2155 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2156 }
afaf5a2d
DS		 2157 }
2158
afaf5a2d 2159 /* Wakeup the dpc routine for this adapter, if needed. */
1b46807e 2160 if (start_dpc ||
afaf5a2d
DS		 2161 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2162 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2163 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
f4f5df23 2164 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
afaf5a2d
DS		 2165 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2166 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
065aa1b4 2167 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
f4f5df23
VC		 2168 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2169 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
1b46807e 2170 test_bit(DPC_AEN, &ha->dpc_flags)) {
afaf5a2d
DS		 2171 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2172 " - dpc flags = 0x%lx\n",
2173 ha->host_no, __func__, ha->dpc_flags));
f4f5df23 2174 qla4xxx_wake_dpc(ha);
afaf5a2d
DS		 2175 }
2176
2177 /* Reschedule timer thread to call us back in one second */
2178 mod_timer(&ha->timer, jiffies + HZ);
2179
2180 DEBUG2(ha->seconds_since_last_intr++);
2181}
2182
2183/**
2184 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
2185 * @ha: Pointer to host adapter structure.
2186 *
2187 * This routine stalls the driver until all outstanding commands are returned.
2188 * Caller must release the Hardware Lock prior to calling this routine.
2189 **/
2190static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2191{
2192 uint32_t index = 0;
afaf5a2d
DS		 2193 unsigned long flags;
2194 struct scsi_cmnd *cmd;
afaf5a2d 2195
f4f5df23
VC		 2196 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2197
2198 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2199 "complete\n", WAIT_CMD_TOV));
2200
2201 while (!time_after_eq(jiffies, wtime)) {
afaf5a2d
DS		 2202 spin_lock_irqsave(&ha->hardware_lock, flags);
2203 /* Find a command that hasn't completed. */
2204 for (index = 0; index < ha->host->can_queue; index++) {
2205 cmd = scsi_host_find_tag(ha->host, index);
a1e0063d
MC		 2206 /*
2207 * We cannot just check if the index is valid,
2208 * becase if we are run from the scsi eh, then
2209 * the scsi/block layer is going to prevent
2210 * the tag from being released.
2211 */
2212 if (cmd != NULL && CMD_SP(cmd))
afaf5a2d
DS		 2213 break;
2214 }
2215 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2216
2217 /* If No Commands are pending, wait is complete */
f4f5df23
VC		 2218 if (index == ha->host->can_queue)
2219 return QLA_SUCCESS;
afaf5a2d 2220
f4f5df23
VC		 2221 msleep(1000);
2222 }
2223 /* If we timed out on waiting for commands to come back
2224 * return ERROR. */
2225 return QLA_ERROR;
afaf5a2d
DS		 2226}
2227
f4f5df23 2228int qla4xxx_hw_reset(struct scsi_qla_host *ha)
afaf5a2d 2229{
afaf5a2d 2230 uint32_t ctrl_status;
477ffb9d
DS		 2231 unsigned long flags = 0;
2232
2233 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
afaf5a2d 2234
f4f5df23
VC		 2235 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2236 return QLA_ERROR;
2237
afaf5a2d
DS		 2238 spin_lock_irqsave(&ha->hardware_lock, flags);
2239
2240 /*
2241 * If the SCSI Reset Interrupt bit is set, clear it.
2242 * Otherwise, the Soft Reset won't work.
2243 */
2244 ctrl_status = readw(&ha->reg->ctrl_status);
2245 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2246 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2247
2248 /* Issue Soft Reset */
2249 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2250 readl(&ha->reg->ctrl_status);
2251
2252 spin_unlock_irqrestore(&ha->hardware_lock, flags);
f4f5df23 2253 return QLA_SUCCESS;
477ffb9d
DS		 2254}
2255
2256/**
2257 * qla4xxx_soft_reset - performs soft reset.
2258 * @ha: Pointer to host adapter structure.
2259 **/
2260int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2261{
2262 uint32_t max_wait_time;
2263 unsigned long flags = 0;
f931c534 2264 int status;
477ffb9d
DS		 2265 uint32_t ctrl_status;
2266
f931c534
VC		 2267 status = qla4xxx_hw_reset(ha);
2268 if (status != QLA_SUCCESS)
2269 return status;
afaf5a2d 2270
f931c534 2271 status = QLA_ERROR;
afaf5a2d
DS		 2272 /* Wait until the Network Reset Intr bit is cleared */
2273 max_wait_time = RESET_INTR_TOV;
2274 do {
2275 spin_lock_irqsave(&ha->hardware_lock, flags);
2276 ctrl_status = readw(&ha->reg->ctrl_status);
2277 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2278
2279 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2280 break;
2281
2282 msleep(1000);
2283 } while ((--max_wait_time));
2284
2285 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2286 DEBUG2(printk(KERN_WARNING
2287 "scsi%ld: Network Reset Intr not cleared by "
2288 "Network function, clearing it now!\n",
2289 ha->host_no));
2290 spin_lock_irqsave(&ha->hardware_lock, flags);
2291 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2292 readl(&ha->reg->ctrl_status);
2293 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2294 }
2295
2296 /* Wait until the firmware tells us the Soft Reset is done */
2297 max_wait_time = SOFT_RESET_TOV;
2298 do {
2299 spin_lock_irqsave(&ha->hardware_lock, flags);
2300 ctrl_status = readw(&ha->reg->ctrl_status);
2301 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2302
2303 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2304 status = QLA_SUCCESS;
2305 break;
2306 }
2307
2308 msleep(1000);
2309 } while ((--max_wait_time));
2310
2311 /*
2312 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2313 * after the soft reset has taken place.
2314 */
2315 spin_lock_irqsave(&ha->hardware_lock, flags);
2316 ctrl_status = readw(&ha->reg->ctrl_status);
2317 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2318 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2319 readl(&ha->reg->ctrl_status);
2320 }
2321 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2322
2323 /* If soft reset fails then most probably the bios on other
2324 * function is also enabled.
2325 * Since the initialization is sequential the other fn
2326 * wont be able to acknowledge the soft reset.
2327 * Issue a force soft reset to workaround this scenario.
2328 */
2329 if (max_wait_time == 0) {
2330 /* Issue Force Soft Reset */
2331 spin_lock_irqsave(&ha->hardware_lock, flags);
2332 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2333 readl(&ha->reg->ctrl_status);
2334 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2335 /* Wait until the firmware tells us the Soft Reset is done */
2336 max_wait_time = SOFT_RESET_TOV;
2337 do {
2338 spin_lock_irqsave(&ha->hardware_lock, flags);
2339 ctrl_status = readw(&ha->reg->ctrl_status);
2340 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2341
2342 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2343 status = QLA_SUCCESS;
2344 break;
2345 }
2346
2347 msleep(1000);
2348 } while ((--max_wait_time));
2349 }
2350
2351 return status;
2352}
2353
afaf5a2d 2354/**
f4f5df23 2355 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
afaf5a2d 2356 * @ha: Pointer to host adapter structure.
f4f5df23 2357 * @res: returned scsi status
afaf5a2d
DS		 2358 *
2359 * This routine is called just prior to a HARD RESET to return all
2360 * outstanding commands back to the Operating System.
2361 * Caller should make sure that the following locks are released
2362 * before this calling routine: Hardware lock, and io_request_lock.
2363 **/
f4f5df23 2364static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
afaf5a2d
DS		 2365{
2366 struct srb *srb;
2367 int i;
2368 unsigned long flags;
2369
2370 spin_lock_irqsave(&ha->hardware_lock, flags);
2371 for (i = 0; i < ha->host->can_queue; i++) {
2372 srb = qla4xxx_del_from_active_array(ha, i);
2373 if (srb != NULL) {
f4f5df23 2374 srb->cmd->result = res;
09a0f719 2375 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
afaf5a2d
DS		 2376 }
2377 }
2378 spin_unlock_irqrestore(&ha->hardware_lock, flags);
afaf5a2d
DS		 2379}
2380
f4f5df23
VC		 2381void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2382{
2383 clear_bit(AF_ONLINE, &ha->flags);
2384
2385 /* Disable the board */
2386 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
f4f5df23
VC		 2387
2388 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2389 qla4xxx_mark_all_devices_missing(ha);
2390 clear_bit(AF_INIT_DONE, &ha->flags);
2391}
2392
b3a271a9
MR		 2393static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2394{
2395 struct iscsi_session *sess;
2396 struct ddb_entry *ddb_entry;
2397
2398 sess = cls_session->dd_data;
2399 ddb_entry = sess->dd_data;
2400 ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
13483730
MC		 2401
2402 if (ddb_entry->ddb_type == FLASH_DDB)
2403 iscsi_block_session(ddb_entry->sess);
2404 else
2405 iscsi_session_failure(cls_session->dd_data,
2406 ISCSI_ERR_CONN_FAILED);
b3a271a9
MR		 2407}
2408
afaf5a2d
DS		 2409/**
2410 * qla4xxx_recover_adapter - recovers adapter after a fatal error
2411 * @ha: Pointer to host adapter structure.
afaf5a2d 2412 **/
f4f5df23 2413static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
afaf5a2d 2414{
f4f5df23
VC		 2415 int status = QLA_ERROR;
2416 uint8_t reset_chip = 0;
afaf5a2d
DS		 2417
2418 /* Stall incoming I/O until we are done */
f4f5df23 2419 scsi_block_requests(ha->host);
afaf5a2d 2420 clear_bit(AF_ONLINE, &ha->flags);
b3a271a9 2421 clear_bit(AF_LINK_UP, &ha->flags);
50a29aec 2422
f4f5df23 2423 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
afaf5a2d 2424
f4f5df23 2425 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
afaf5a2d 2426
b3a271a9
MR		 2427 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2428
f4f5df23
VC		 2429 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2430 reset_chip = 1;
afaf5a2d 2431
f4f5df23
VC		 2432 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2433 * do not reset adapter, jump to initialize_adapter */
2434 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2435 status = QLA_SUCCESS;
2436 goto recover_ha_init_adapter;
2437 }
afaf5a2d 2438
f4f5df23
VC		 2439 /* For the ISP-82xx adapter, issue a stop_firmware if invoked
2440 * from eh_host_reset or ioctl module */
2441 if (is_qla8022(ha) && !reset_chip &&
2442 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2443
2444 DEBUG2(ql4_printk(KERN_INFO, ha,
2445 "scsi%ld: %s - Performing stop_firmware...\n",
2446 ha->host_no, __func__));
2447 status = ha->isp_ops->reset_firmware(ha);
2448 if (status == QLA_SUCCESS) {
2bd1e2be
NJ		 2449 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2450 qla4xxx_cmd_wait(ha);
f4f5df23
VC		 2451 ha->isp_ops->disable_intrs(ha);
2452 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2453 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2454 } else {
2455 /* If the stop_firmware fails then
2456 * reset the entire chip */
2457 reset_chip = 1;
2458 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2459 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2460 }
2461 }
dca05c4c 2462
f4f5df23
VC		 2463 /* Issue full chip reset if recovering from a catastrophic error,
2464 * or if stop_firmware fails for ISP-82xx.
2465 * This is the default case for ISP-4xxx */
2466 if (!is_qla8022(ha) || reset_chip) {
2bd1e2be
NJ		 2467 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2468 qla4xxx_cmd_wait(ha);
f4f5df23
VC		 2469 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2470 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2471 DEBUG2(ql4_printk(KERN_INFO, ha,
2472 "scsi%ld: %s - Performing chip reset..\n",
2473 ha->host_no, __func__));
2474 status = ha->isp_ops->reset_chip(ha);
2475 }
afaf5a2d
DS		 2476
2477 /* Flush any pending ddb changed AENs */
2478 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2479
f4f5df23
VC		 2480recover_ha_init_adapter:
2481 /* Upon successful firmware/chip reset, re-initialize the adapter */
afaf5a2d 2482 if (status == QLA_SUCCESS) {
f4f5df23
VC		 2483 /* For ISP-4xxx, force function 1 to always initialize
2484 * before function 3 to prevent both funcions from
2485 * stepping on top of the other */
2486 if (!is_qla8022(ha) && (ha->mac_index == 3))
2487 ssleep(6);
2488
2489 /* NOTE: AF_ONLINE flag set upon successful completion of
2490 * qla4xxx_initialize_adapter */
13483730 2491 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
afaf5a2d
DS		 2492 }
2493
f4f5df23
VC		 2494 /* Retry failed adapter initialization, if necessary
2495 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
2496 * case to prevent ping-pong resets between functions */
2497 if (!test_bit(AF_ONLINE, &ha->flags) &&
2498 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
afaf5a2d 2499 /* Adapter initialization failed, see if we can retry
f4f5df23
VC		 2500 * resetting the ha.
2501 * Since we don't want to block the DPC for too long
2502 * with multiple resets in the same thread,
2503 * utilize DPC to retry */
afaf5a2d
DS		 2504 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
2505 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
2506 DEBUG2(printk("scsi%ld: recover adapter - retrying "
2507 "(%d) more times\n", ha->host_no,
2508 ha->retry_reset_ha_cnt));
2509 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2510 status = QLA_ERROR;
2511 } else {
2512 if (ha->retry_reset_ha_cnt > 0) {
2513 /* Schedule another Reset HA--DPC will retry */
2514 ha->retry_reset_ha_cnt--;
2515 DEBUG2(printk("scsi%ld: recover adapter - "
2516 "retry remaining %d\n",
2517 ha->host_no,
2518 ha->retry_reset_ha_cnt));
2519 status = QLA_ERROR;
2520 }
2521
2522 if (ha->retry_reset_ha_cnt == 0) {
2523 /* Recover adapter retries have been exhausted.
2524 * Adapter DEAD */
2525 DEBUG2(printk("scsi%ld: recover adapter "
2526 "failed - board disabled\n",
2527 ha->host_no));
f4f5df23 2528 qla4xxx_dead_adapter_cleanup(ha);
afaf5a2d
DS		 2529 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2530 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
f4f5df23 2531 clear_bit(DPC_RESET_HA_FW_CONTEXT,
afaf5a2d
DS		 2532 &ha->dpc_flags);
2533 status = QLA_ERROR;
2534 }
2535 }
2536 } else {
2537 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
f4f5df23 2538 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
afaf5a2d
DS		 2539 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2540 }
2541
2542 ha->adapter_error_count++;
2543
f4f5df23
VC		 2544 if (test_bit(AF_ONLINE, &ha->flags))
2545 ha->isp_ops->enable_intrs(ha);
2546
2547 scsi_unblock_requests(ha->host);
2548
2549 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2550 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
25985edc 2551 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
afaf5a2d 2552
afaf5a2d
DS		 2553 return status;
2554}
2555
b3a271a9 2556static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
2d7924e6 2557{
b3a271a9
MR		 2558 struct iscsi_session *sess;
2559 struct ddb_entry *ddb_entry;
2560 struct scsi_qla_host *ha;
2d7924e6 2561
b3a271a9
MR		 2562 sess = cls_session->dd_data;
2563 ddb_entry = sess->dd_data;
2564 ha = ddb_entry->ha;
2565 if (!iscsi_is_session_online(cls_session)) {
2566 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
2567 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2568 " unblock session\n", ha->host_no, __func__,
2569 ddb_entry->fw_ddb_index);
2570 iscsi_unblock_session(ddb_entry->sess);
2571 } else {
2572 /* Trigger relogin */
13483730
MC		 2573 if (ddb_entry->ddb_type == FLASH_DDB) {
2574 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
2575 qla4xxx_arm_relogin_timer(ddb_entry);
2576 } else
2577 iscsi_session_failure(cls_session->dd_data,
2578 ISCSI_ERR_CONN_FAILED);
2d7924e6
VC		 2579 }
2580 }
2581}
2582
13483730
MC		 2583int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
2584{
2585 struct iscsi_session *sess;
2586 struct ddb_entry *ddb_entry;
2587 struct scsi_qla_host *ha;
2588
2589 sess = cls_session->dd_data;
2590 ddb_entry = sess->dd_data;
2591 ha = ddb_entry->ha;
2592 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2593 " unblock session\n", ha->host_no, __func__,
2594 ddb_entry->fw_ddb_index);
2595
2596 iscsi_unblock_session(ddb_entry->sess);
2597
2598 /* Start scan target */
2599 if (test_bit(AF_ONLINE, &ha->flags)) {
2600 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2601 " start scan\n", ha->host_no, __func__,
2602 ddb_entry->fw_ddb_index);
2603 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
2604 }
2605 return QLA_SUCCESS;
2606}
2607
2608int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
2609{
2610 struct iscsi_session *sess;
2611 struct ddb_entry *ddb_entry;
2612 struct scsi_qla_host *ha;
2613
2614 sess = cls_session->dd_data;
2615 ddb_entry = sess->dd_data;
2616 ha = ddb_entry->ha;
2617 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2618 " unblock user space session\n", ha->host_no, __func__,
2619 ddb_entry->fw_ddb_index);
2620 iscsi_conn_start(ddb_entry->conn);
2621 iscsi_conn_login_event(ddb_entry->conn,
2622 ISCSI_CONN_STATE_LOGGED_IN);
2623
2624 return QLA_SUCCESS;
2625}
2626
b3a271a9
MR		 2627static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
2628{
2629 iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
2630}
2631
13483730
MC		 2632static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2633{
2634 uint16_t relogin_timer;
2635 struct iscsi_session *sess;
2636 struct ddb_entry *ddb_entry;
2637 struct scsi_qla_host *ha;
2638
2639 sess = cls_sess->dd_data;
2640 ddb_entry = sess->dd_data;
2641 ha = ddb_entry->ha;
2642
2643 relogin_timer = max(ddb_entry->default_relogin_timeout,
2644 (uint16_t)RELOGIN_TOV);
2645 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
2646
2647 DEBUG2(ql4_printk(KERN_INFO, ha,
2648 "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
2649 ddb_entry->fw_ddb_index, relogin_timer));
2650
2651 qla4xxx_login_flash_ddb(cls_sess);
2652}
2653
2654static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
2655{
2656 struct iscsi_session *sess;
2657 struct ddb_entry *ddb_entry;
2658 struct scsi_qla_host *ha;
2659
2660 sess = cls_sess->dd_data;
2661 ddb_entry = sess->dd_data;
2662 ha = ddb_entry->ha;
2663
2664 if (!(ddb_entry->ddb_type == FLASH_DDB))
2665 return;
2666
2667 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
2668 !iscsi_is_session_online(cls_sess)) {
2669 DEBUG2(ql4_printk(KERN_INFO, ha,
2670 "relogin issued\n"));
2671 qla4xxx_relogin_flash_ddb(cls_sess);
2672 }
2673}
2674
f4f5df23
VC		 2675void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
2676{
1b46807e 2677 if (ha->dpc_thread)
f4f5df23 2678 queue_work(ha->dpc_thread, &ha->dpc_work);
f4f5df23
VC		 2679}
2680
afaf5a2d
DS		 2681/**
2682 * qla4xxx_do_dpc - dpc routine
2683 * @data: in our case pointer to adapter structure
2684 *
2685 * This routine is a task that is schedule by the interrupt handler
2686 * to perform the background processing for interrupts. We put it
2687 * on a task queue that is consumed whenever the scheduler runs; that's
2688 * so you can do anything (i.e. put the process to sleep etc). In fact,
2689 * the mid-level tries to sleep when it reaches the driver threshold
2690 * "host->can_queue". This can cause a panic if we were in our interrupt code.
2691 **/
c4028958 2692static void qla4xxx_do_dpc(struct work_struct *work)
afaf5a2d 2693{
c4028958
DH		 2694 struct scsi_qla_host *ha =
2695 container_of(work, struct scsi_qla_host, dpc_work);
477ffb9d 2696 int status = QLA_ERROR;
afaf5a2d 2697
f26b9044 2698 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
f4f5df23
VC		 2699 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
2700 ha->host_no, __func__, ha->flags, ha->dpc_flags))
afaf5a2d
DS		 2701
2702 /* Initialization not yet finished. Don't do anything yet. */
2703 if (!test_bit(AF_INIT_DONE, &ha->flags))
1b46807e 2704 return;
afaf5a2d 2705
2232be0d
LC		 2706 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2707 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
2708 ha->host_no, __func__, ha->flags));
1b46807e 2709 return;
2232be0d
LC		 2710 }
2711
f4f5df23
VC		 2712 if (is_qla8022(ha)) {
2713 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
2714 qla4_8xxx_idc_lock(ha);
2715 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2716 QLA82XX_DEV_FAILED);
2717 qla4_8xxx_idc_unlock(ha);
2718 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
2719 qla4_8xxx_device_state_handler(ha);
2720 }
2721 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2722 qla4_8xxx_need_qsnt_handler(ha);
2723 }
2724 }
2725
2726 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
2727 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
afaf5a2d 2728 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
f4f5df23
VC		 2729 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
2730 if (ql4xdontresethba) {
2731 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
2732 ha->host_no, __func__));
2733 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
2734 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
2735 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2736 goto dpc_post_reset_ha;
2737 }
2738 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2739 test_bit(DPC_RESET_HA, &ha->dpc_flags))
2740 qla4xxx_recover_adapter(ha);
afaf5a2d 2741
477ffb9d 2742 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
afaf5a2d 2743 uint8_t wait_time = RESET_INTR_TOV;
afaf5a2d 2744
afaf5a2d
DS		 2745 while ((readw(&ha->reg->ctrl_status) &
2746 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
2747 if (--wait_time == 0)
2748 break;
afaf5a2d 2749 msleep(1000);
afaf5a2d 2750 }
afaf5a2d
DS		 2751 if (wait_time == 0)
2752 DEBUG2(printk("scsi%ld: %s: SR|FSR "
2753 "bit not cleared-- resetting\n",
2754 ha->host_no, __func__));
f4f5df23 2755 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
477ffb9d
DS		 2756 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
2757 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
f4f5df23 2758 status = qla4xxx_recover_adapter(ha);
477ffb9d
DS		 2759 }
2760 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
2761 if (status == QLA_SUCCESS)
f4f5df23 2762 ha->isp_ops->enable_intrs(ha);
afaf5a2d
DS		 2763 }
2764 }
2765
f4f5df23 2766dpc_post_reset_ha:
afaf5a2d
DS		 2767 /* ---- process AEN? --- */
2768 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
2769 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
2770
2771 /* ---- Get DHCP IP Address? --- */
2772 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
2773 qla4xxx_get_dhcp_ip_address(ha);
2774
13483730
MC		 2775 /* ---- relogin device? --- */
2776 if (adapter_up(ha) &&
2777 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
2778 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
2779 }
2780
065aa1b4
VC		 2781 /* ---- link change? --- */
2782 if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
2783 if (!test_bit(AF_LINK_UP, &ha->flags)) {
2784 /* ---- link down? --- */
2d7924e6 2785 qla4xxx_mark_all_devices_missing(ha);
065aa1b4
VC		 2786 } else {
2787 /* ---- link up? --- *
2788 * F/W will auto login to all devices ONLY ONCE after
2789 * link up during driver initialization and runtime
2790 * fatal error recovery. Therefore, the driver must
2791 * manually relogin to devices when recovering from
2792 * connection failures, logouts, expired KATO, etc. */
13483730
MC		 2793 if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
2794 qla4xxx_build_ddb_list(ha, ha->is_reset);
2795 iscsi_host_for_each_session(ha->host,
2796 qla4xxx_login_flash_ddb);
2797 } else
2798 qla4xxx_relogin_all_devices(ha);
065aa1b4
VC		 2799 }
2800 }
afaf5a2d
DS		 2801}
2802
2803/**
2804 * qla4xxx_free_adapter - release the adapter
2805 * @ha: pointer to adapter structure
2806 **/
2807static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
2808{
2809
2810 if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
2811 /* Turn-off interrupts on the card. */
f4f5df23 2812 ha->isp_ops->disable_intrs(ha);
afaf5a2d
DS		 2813 }
2814
f4f5df23
VC		 2815 /* Remove timer thread, if present */
2816 if (ha->timer_active)
2817 qla4xxx_stop_timer(ha);
2818
afaf5a2d
DS		 2819 /* Kill the kernel thread for this host */
2820 if (ha->dpc_thread)
2821 destroy_workqueue(ha->dpc_thread);
2822
b3a271a9
MR		 2823 /* Kill the kernel thread for this host */
2824 if (ha->task_wq)
2825 destroy_workqueue(ha->task_wq);
2826
f4f5df23
VC		 2827 /* Put firmware in known state */
2828 ha->isp_ops->reset_firmware(ha);
afaf5a2d 2829
f4f5df23
VC		 2830 if (is_qla8022(ha)) {
2831 qla4_8xxx_idc_lock(ha);
2832 qla4_8xxx_clear_drv_active(ha);
2833 qla4_8xxx_idc_unlock(ha);
2834 }
afaf5a2d 2835
afaf5a2d
DS		 2836 /* Detach interrupts */
2837 if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
f4f5df23 2838 qla4xxx_free_irqs(ha);
afaf5a2d 2839
bee4fe8e
DS		 2840 /* free extra memory */
2841 qla4xxx_mem_free(ha);
f4f5df23
VC		 2842}
2843
2844int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
2845{
2846 int status = 0;
2847 uint8_t revision_id;
2848 unsigned long mem_base, mem_len, db_base, db_len;
2849 struct pci_dev *pdev = ha->pdev;
2850
2851 status = pci_request_regions(pdev, DRIVER_NAME);
2852 if (status) {
2853 printk(KERN_WARNING
2854 "scsi(%ld) Failed to reserve PIO regions (%s) "
2855 "status=%d\n", ha->host_no, pci_name(pdev), status);
2856 goto iospace_error_exit;
2857 }
2858
2859 pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id);
2860 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
2861 __func__, revision_id));
2862 ha->revision_id = revision_id;
bee4fe8e 2863
f4f5df23
VC		 2864 /* remap phys address */
2865 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
2866 mem_len = pci_resource_len(pdev, 0);
2867 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
2868 __func__, mem_base, mem_len));
afaf5a2d 2869
f4f5df23
VC		 2870 /* mapping of pcibase pointer */
2871 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
2872 if (!ha->nx_pcibase) {
2873 printk(KERN_ERR
2874 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
2875 pci_release_regions(ha->pdev);
2876 goto iospace_error_exit;
2877 }
2878
2879 /* Mapping of IO base pointer, door bell read and write pointer */
2880
2881 /* mapping of IO base pointer */
2882 ha->qla4_8xxx_reg =
2883 (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase +
2884 0xbc000 + (ha->pdev->devfn << 11));
2885
2886 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
2887 db_len = pci_resource_len(pdev, 4);
2888
2657c800
SS		 2889 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
2890 QLA82XX_CAM_RAM_DB2);
f4f5df23 2891
2657c800 2892 return 0;
f4f5df23
VC		 2893iospace_error_exit:
2894 return -ENOMEM;
afaf5a2d
DS		 2895}
2896
2897/***
2898 * qla4xxx_iospace_config - maps registers
2899 * @ha: pointer to adapter structure
2900 *
2901 * This routines maps HBA's registers from the pci address space
2902 * into the kernel virtual address space for memory mapped i/o.
2903 **/
f4f5df23 2904int qla4xxx_iospace_config(struct scsi_qla_host *ha)
afaf5a2d
DS		 2905{
2906 unsigned long pio, pio_len, pio_flags;
2907 unsigned long mmio, mmio_len, mmio_flags;
2908
2909 pio = pci_resource_start(ha->pdev, 0);
2910 pio_len = pci_resource_len(ha->pdev, 0);
2911 pio_flags = pci_resource_flags(ha->pdev, 0);
2912 if (pio_flags & IORESOURCE_IO) {
2913 if (pio_len < MIN_IOBASE_LEN) {
c2660df3 2914 ql4_printk(KERN_WARNING, ha,
afaf5a2d
DS		 2915 "Invalid PCI I/O region size\n");
2916 pio = 0;
2917 }
2918 } else {
c2660df3 2919 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
afaf5a2d
DS		 2920 pio = 0;
2921 }
2922
2923 /* Use MMIO operations for all accesses. */
2924 mmio = pci_resource_start(ha->pdev, 1);
2925 mmio_len = pci_resource_len(ha->pdev, 1);
2926 mmio_flags = pci_resource_flags(ha->pdev, 1);
2927
2928 if (!(mmio_flags & IORESOURCE_MEM)) {
c2660df3
VC		 2929 ql4_printk(KERN_ERR, ha,
2930 "region #0 not an MMIO resource, aborting\n");
afaf5a2d
DS		 2931
2932 goto iospace_error_exit;
2933 }
c2660df3 2934
afaf5a2d 2935 if (mmio_len < MIN_IOBASE_LEN) {
c2660df3
VC		 2936 ql4_printk(KERN_ERR, ha,
2937 "Invalid PCI mem region size, aborting\n");
afaf5a2d
DS		 2938 goto iospace_error_exit;
2939 }
2940
2941 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
c2660df3
VC		 2942 ql4_printk(KERN_WARNING, ha,
2943 "Failed to reserve PIO/MMIO regions\n");
afaf5a2d
DS		 2944
2945 goto iospace_error_exit;
2946 }
2947
2948 ha->pio_address = pio;
2949 ha->pio_length = pio_len;
2950 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
2951 if (!ha->reg) {
c2660df3
VC		 2952 ql4_printk(KERN_ERR, ha,
2953 "cannot remap MMIO, aborting\n");
afaf5a2d
DS		 2954
2955 goto iospace_error_exit;
2956 }
2957
2958 return 0;
2959
2960iospace_error_exit:
2961 return -ENOMEM;
2962}
2963
f4f5df23
VC		 2964static struct isp_operations qla4xxx_isp_ops = {
2965 .iospace_config = qla4xxx_iospace_config,
2966 .pci_config = qla4xxx_pci_config,
2967 .disable_intrs = qla4xxx_disable_intrs,
2968 .enable_intrs = qla4xxx_enable_intrs,
2969 .start_firmware = qla4xxx_start_firmware,
2970 .intr_handler = qla4xxx_intr_handler,
2971 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
2972 .reset_chip = qla4xxx_soft_reset,
2973 .reset_firmware = qla4xxx_hw_reset,
2974 .queue_iocb = qla4xxx_queue_iocb,
2975 .complete_iocb = qla4xxx_complete_iocb,
2976 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
2977 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
2978 .get_sys_info = qla4xxx_get_sys_info,
2979};
2980
2981static struct isp_operations qla4_8xxx_isp_ops = {
2982 .iospace_config = qla4_8xxx_iospace_config,
2983 .pci_config = qla4_8xxx_pci_config,
2984 .disable_intrs = qla4_8xxx_disable_intrs,
2985 .enable_intrs = qla4_8xxx_enable_intrs,
2986 .start_firmware = qla4_8xxx_load_risc,
2987 .intr_handler = qla4_8xxx_intr_handler,
2988 .interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
2989 .reset_chip = qla4_8xxx_isp_reset,
2990 .reset_firmware = qla4_8xxx_stop_firmware,
2991 .queue_iocb = qla4_8xxx_queue_iocb,
2992 .complete_iocb = qla4_8xxx_complete_iocb,
2993 .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out,
2994 .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in,
2995 .get_sys_info = qla4_8xxx_get_sys_info,
2996};
2997
2998uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
2999{
3000 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3001}
3002
3003uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3004{
3005 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
3006}
3007
3008uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3009{
3010 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3011}
3012
3013uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3014{
3015 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
3016}
3017
2a991c21
MR		 3018static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3019{
3020 struct scsi_qla_host *ha = data;
3021 char *str = buf;
3022 int rc;
3023
3024 switch (type) {
3025 case ISCSI_BOOT_ETH_FLAGS:
3026 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3027 break;
3028 case ISCSI_BOOT_ETH_INDEX:
3029 rc = sprintf(str, "0\n");
3030 break;
3031 case ISCSI_BOOT_ETH_MAC:
3032 rc = sysfs_format_mac(str, ha->my_mac,
3033 MAC_ADDR_LEN);
3034 break;
3035 default:
3036 rc = -ENOSYS;
3037 break;
3038 }
3039 return rc;
3040}
3041
587a1f16 3042static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
2a991c21
MR		 3043{
3044 int rc;
3045
3046 switch (type) {
3047 case ISCSI_BOOT_ETH_FLAGS:
3048 case ISCSI_BOOT_ETH_MAC:
3049 case ISCSI_BOOT_ETH_INDEX:
3050 rc = S_IRUGO;
3051 break;
3052 default:
3053 rc = 0;
3054 break;
3055 }
3056 return rc;
3057}
3058
3059static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3060{
3061 struct scsi_qla_host *ha = data;
3062 char *str = buf;
3063 int rc;
3064
3065 switch (type) {
3066 case ISCSI_BOOT_INI_INITIATOR_NAME:
3067 rc = sprintf(str, "%s\n", ha->name_string);
3068 break;
3069 default:
3070 rc = -ENOSYS;
3071 break;
3072 }
3073 return rc;
3074}
3075
587a1f16 3076static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
2a991c21
MR		 3077{
3078 int rc;
3079
3080 switch (type) {
3081 case ISCSI_BOOT_INI_INITIATOR_NAME:
3082 rc = S_IRUGO;
3083 break;
3084 default:
3085 rc = 0;
3086 break;
3087 }
3088 return rc;
3089}
3090
3091static ssize_t
3092qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3093 char *buf)
3094{
3095 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3096 char *str = buf;
3097 int rc;
3098
3099 switch (type) {
3100 case ISCSI_BOOT_TGT_NAME:
3101 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3102 break;
3103 case ISCSI_BOOT_TGT_IP_ADDR:
3104 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3105 rc = sprintf(buf, "%pI4\n",
3106 &boot_conn->dest_ipaddr.ip_address);
3107 else
3108 rc = sprintf(str, "%pI6\n",
3109 &boot_conn->dest_ipaddr.ip_address);
3110 break;
3111 case ISCSI_BOOT_TGT_PORT:
3112 rc = sprintf(str, "%d\n", boot_conn->dest_port);
3113 break;
3114 case ISCSI_BOOT_TGT_CHAP_NAME:
3115 rc = sprintf(str, "%.*s\n",
3116 boot_conn->chap.target_chap_name_length,
3117 (char *)&boot_conn->chap.target_chap_name);
3118 break;
3119 case ISCSI_BOOT_TGT_CHAP_SECRET:
3120 rc = sprintf(str, "%.*s\n",
3121 boot_conn->chap.target_secret_length,
3122 (char *)&boot_conn->chap.target_secret);
3123 break;
3124 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3125 rc = sprintf(str, "%.*s\n",
3126 boot_conn->chap.intr_chap_name_length,
3127 (char *)&boot_conn->chap.intr_chap_name);
3128 break;
3129 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3130 rc = sprintf(str, "%.*s\n",
3131 boot_conn->chap.intr_secret_length,
3132 (char *)&boot_conn->chap.intr_secret);
3133 break;
3134 case ISCSI_BOOT_TGT_FLAGS:
3135 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3136 break;
3137 case ISCSI_BOOT_TGT_NIC_ASSOC:
3138 rc = sprintf(str, "0\n");
3139 break;
3140 default:
3141 rc = -ENOSYS;
3142 break;
3143 }
3144 return rc;
3145}
3146
3147static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3148{
3149 struct scsi_qla_host *ha = data;
3150 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3151
3152 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3153}
3154
3155static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3156{
3157 struct scsi_qla_host *ha = data;
3158 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3159
3160 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3161}
3162
587a1f16 3163static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
2a991c21
MR		 3164{
3165 int rc;
3166
3167 switch (type) {
3168 case ISCSI_BOOT_TGT_NAME:
3169 case ISCSI_BOOT_TGT_IP_ADDR:
3170 case ISCSI_BOOT_TGT_PORT:
3171 case ISCSI_BOOT_TGT_CHAP_NAME:
3172 case ISCSI_BOOT_TGT_CHAP_SECRET:
3173 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3174 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3175 case ISCSI_BOOT_TGT_NIC_ASSOC:
3176 case ISCSI_BOOT_TGT_FLAGS:
3177 rc = S_IRUGO;
3178 break;
3179 default:
3180 rc = 0;
3181 break;
3182 }
3183 return rc;
3184}
3185
3186static void qla4xxx_boot_release(void *data)
3187{
3188 struct scsi_qla_host *ha = data;
3189
3190 scsi_host_put(ha->host);
3191}
3192
3193static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3194{
3195 dma_addr_t buf_dma;
3196 uint32_t addr, pri_addr, sec_addr;
3197 uint32_t offset;
3198 uint16_t func_num;
3199 uint8_t val;
3200 uint8_t *buf = NULL;
3201 size_t size = 13 * sizeof(uint8_t);
3202 int ret = QLA_SUCCESS;
3203
3204 func_num = PCI_FUNC(ha->pdev->devfn);
3205
0d5b36b8
MR		 3206 ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3207 __func__, ha->pdev->device, func_num);
2a991c21 3208
0d5b36b8 3209 if (is_qla40XX(ha)) {
2a991c21
MR		 3210 if (func_num == 1) {
3211 addr = NVRAM_PORT0_BOOT_MODE;
3212 pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3213 sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3214 } else if (func_num == 3) {
3215 addr = NVRAM_PORT1_BOOT_MODE;
3216 pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3217 sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3218 } else {
3219 ret = QLA_ERROR;
3220 goto exit_boot_info;
3221 }
3222
3223 /* Check Boot Mode */
3224 val = rd_nvram_byte(ha, addr);
3225 if (!(val & 0x07)) {
3226 DEBUG2(ql4_printk(KERN_ERR, ha,
3227 "%s: Failed Boot options : 0x%x\n",
3228 __func__, val));
3229 ret = QLA_ERROR;
3230 goto exit_boot_info;
3231 }
3232
3233 /* get primary valid target index */
3234 val = rd_nvram_byte(ha, pri_addr);
3235 if (val & BIT_7)
3236 ddb_index[0] = (val & 0x7f);
2a991c21
MR		 3237
3238 /* get secondary valid target index */
3239 val = rd_nvram_byte(ha, sec_addr);
3240 if (val & BIT_7)
3241 ddb_index[1] = (val & 0x7f);
2a991c21
MR		 3242
3243 } else if (is_qla8022(ha)) {
3244 buf = dma_alloc_coherent(&ha->pdev->dev, size,
3245 &buf_dma, GFP_KERNEL);
3246 if (!buf) {
3247 DEBUG2(ql4_printk(KERN_ERR, ha,
3248 "%s: Unable to allocate dma buffer\n",
3249 __func__));
3250 ret = QLA_ERROR;
3251 goto exit_boot_info;
3252 }
3253
3254 if (ha->port_num == 0)
3255 offset = BOOT_PARAM_OFFSET_PORT0;
3256 else if (ha->port_num == 1)
3257 offset = BOOT_PARAM_OFFSET_PORT1;
3258 else {
3259 ret = QLA_ERROR;
3260 goto exit_boot_info_free;
3261 }
3262 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
3263 offset;
3264 if (qla4xxx_get_flash(ha, buf_dma, addr,
3265 13 * sizeof(uint8_t)) != QLA_SUCCESS) {
3266 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
3267 "failed\n", ha->host_no, __func__));
3268 ret = QLA_ERROR;
3269 goto exit_boot_info_free;
3270 }
3271 /* Check Boot Mode */
3272 if (!(buf[1] & 0x07)) {
3273 DEBUG2(ql4_printk(KERN_INFO, ha,
3274 "Failed: Boot options : 0x%x\n",
3275 buf[1]));
3276 ret = QLA_ERROR;
3277 goto exit_boot_info_free;
3278 }
3279
3280 /* get primary valid target index */
3281 if (buf[2] & BIT_7)
3282 ddb_index[0] = buf[2] & 0x7f;
2a991c21
MR		 3283
3284 /* get secondary valid target index */
3285 if (buf[11] & BIT_7)
3286 ddb_index[1] = buf[11] & 0x7f;
2a991c21
MR		 3287 } else {
3288 ret = QLA_ERROR;
3289 goto exit_boot_info;
3290 }
3291
3292 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
3293 " target ID %d\n", __func__, ddb_index[0],
3294 ddb_index[1]));
3295
13483730
MC		 3296 ha->pri_ddb_idx = ddb_index[0];
3297 ha->sec_ddb_idx = ddb_index[1];
3298
2a991c21
MR		 3299exit_boot_info_free:
3300 dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
3301exit_boot_info:
3302 return ret;
3303}
3304
28deb45c
LC		 3305/**
3306 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
3307 * @ha: pointer to adapter structure
3308 * @username: CHAP username to be returned
3309 * @password: CHAP password to be returned
3310 *
3311 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
3312 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
3313 * So from the CHAP cache find the first BIDI CHAP entry and set it
3314 * to the boot record in sysfs.
3315 **/
3316static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
3317 char *password)
3318{
3319 int i, ret = -EINVAL;
3320 int max_chap_entries = 0;
3321 struct ql4_chap_table *chap_table;
3322
3323 if (is_qla8022(ha))
3324 max_chap_entries = (ha->hw.flt_chap_size / 2) /
3325 sizeof(struct ql4_chap_table);
3326 else
3327 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
3328
3329 if (!ha->chap_list) {
3330 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
3331 return ret;
3332 }
3333
3334 mutex_lock(&ha->chap_sem);
3335 for (i = 0; i < max_chap_entries; i++) {
3336 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
3337 if (chap_table->cookie !=
3338 __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
3339 continue;
3340 }
3341
3342 if (chap_table->flags & BIT_7) /* local */
3343 continue;
3344
3345 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
3346 continue;
3347
3348 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
3349 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
3350 ret = 0;
3351 break;
3352 }
3353 mutex_unlock(&ha->chap_sem);
3354
3355 return ret;
3356}
3357
3358
2a991c21
MR		 3359static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
3360 struct ql4_boot_session_info *boot_sess,
3361 uint16_t ddb_index)
3362{
3363 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3364 struct dev_db_entry *fw_ddb_entry;
3365 dma_addr_t fw_ddb_entry_dma;
3366 uint16_t idx;
3367 uint16_t options;
3368 int ret = QLA_SUCCESS;
3369
3370 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3371 &fw_ddb_entry_dma, GFP_KERNEL);
3372 if (!fw_ddb_entry) {
3373 DEBUG2(ql4_printk(KERN_ERR, ha,
3374 "%s: Unable to allocate dma buffer.\n",
3375 __func__));
3376 ret = QLA_ERROR;
3377 return ret;
3378 }
3379
3380 if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
3381 fw_ddb_entry_dma, ddb_index)) {
3382 DEBUG2(ql4_printk(KERN_ERR, ha,
3383 "%s: Flash DDB read Failed\n", __func__));
3384 ret = QLA_ERROR;
3385 goto exit_boot_target;
3386 }
3387
3388 /* Update target name and IP from DDB */
3389 memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
3390 min(sizeof(boot_sess->target_name),
3391 sizeof(fw_ddb_entry->iscsi_name)));
3392
3393 options = le16_to_cpu(fw_ddb_entry->options);
3394 if (options & DDB_OPT_IPV6_DEVICE) {
3395 memcpy(&boot_conn->dest_ipaddr.ip_address,
3396 &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
3397 } else {
3398 boot_conn->dest_ipaddr.ip_type = 0x1;
3399 memcpy(&boot_conn->dest_ipaddr.ip_address,
3400 &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
3401 }
3402
3403 boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
3404
3405 /* update chap information */
3406 idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3407
3408 if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
3409
3410 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
3411
3412 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
3413 target_chap_name,
3414 (char *)&boot_conn->chap.target_secret,
3415 idx);
3416 if (ret) {
3417 ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
3418 ret = QLA_ERROR;
3419 goto exit_boot_target;
3420 }
3421
3422 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
3423 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
3424 }
3425
3426 if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
3427
3428 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
3429
28deb45c
LC		 3430 ret = qla4xxx_get_bidi_chap(ha,
3431 (char *)&boot_conn->chap.intr_chap_name,
3432 (char *)&boot_conn->chap.intr_secret);
3433
2a991c21
MR		 3434 if (ret) {
3435 ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
3436 ret = QLA_ERROR;
3437 goto exit_boot_target;
3438 }
3439
3440 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
3441 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
3442 }
3443
3444exit_boot_target:
3445 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3446 fw_ddb_entry, fw_ddb_entry_dma);
3447 return ret;
3448}
3449
3450static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
3451{
3452 uint16_t ddb_index[2];
8de5b958
LC		 3453 int ret = QLA_ERROR;
3454 int rval;
2a991c21
MR		 3455
3456 memset(ddb_index, 0, sizeof(ddb_index));
8de5b958
LC		 3457 ddb_index[0] = 0xffff;
3458 ddb_index[1] = 0xffff;
2a991c21
MR		 3459 ret = get_fw_boot_info(ha, ddb_index);
3460 if (ret != QLA_SUCCESS) {
3461 DEBUG2(ql4_printk(KERN_ERR, ha,
3462 "%s: Failed to set boot info.\n", __func__));
3463 return ret;
3464 }
3465
13483730
MC		 3466 if (ql4xdisablesysfsboot)
3467 return QLA_SUCCESS;
3468
8de5b958
LC		 3469 if (ddb_index[0] == 0xffff)
3470 goto sec_target;
3471
3472 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
2a991c21 3473 ddb_index[0]);
8de5b958 3474 if (rval != QLA_SUCCESS) {
2a991c21
MR		 3475 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Failed to get "
3476 "primary target\n", __func__));
8de5b958
LC		 3477 } else
3478 ret = QLA_SUCCESS;
2a991c21 3479
8de5b958
LC		 3480sec_target:
3481 if (ddb_index[1] == 0xffff)
3482 goto exit_get_boot_info;
3483
3484 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
2a991c21 3485 ddb_index[1]);
8de5b958 3486 if (rval != QLA_SUCCESS) {
2a991c21
MR		 3487 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Failed to get "
3488 "secondary target\n", __func__));
8de5b958
LC		 3489 } else
3490 ret = QLA_SUCCESS;
3491
3492exit_get_boot_info:
2a991c21
MR		 3493 return ret;
3494}
3495
3496static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
3497{
3498 struct iscsi_boot_kobj *boot_kobj;
3499
3500 if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
13483730
MC		 3501 return QLA_ERROR;
3502
3503 if (ql4xdisablesysfsboot) {
3504 ql4_printk(KERN_INFO, ha,
3505 "%s: syfsboot disabled - driver will trigger login"
3506 "and publish session for discovery .\n", __func__);
3507 return QLA_SUCCESS;
3508 }
3509
2a991c21
MR		 3510
3511 ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
3512 if (!ha->boot_kset)
3513 goto kset_free;
3514
3515 if (!scsi_host_get(ha->host))
3516 goto kset_free;
3517 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
3518 qla4xxx_show_boot_tgt_pri_info,
3519 qla4xxx_tgt_get_attr_visibility,
3520 qla4xxx_boot_release);
3521 if (!boot_kobj)
3522 goto put_host;
3523
3524 if (!scsi_host_get(ha->host))
3525 goto kset_free;
3526 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
3527 qla4xxx_show_boot_tgt_sec_info,
3528 qla4xxx_tgt_get_attr_visibility,
3529 qla4xxx_boot_release);
3530 if (!boot_kobj)
3531 goto put_host;
3532
3533 if (!scsi_host_get(ha->host))
3534 goto kset_free;
3535 boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
3536 qla4xxx_show_boot_ini_info,
3537 qla4xxx_ini_get_attr_visibility,
3538 qla4xxx_boot_release);
3539 if (!boot_kobj)
3540 goto put_host;
3541
3542 if (!scsi_host_get(ha->host))
3543 goto kset_free;
3544 boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
3545 qla4xxx_show_boot_eth_info,
3546 qla4xxx_eth_get_attr_visibility,
3547 qla4xxx_boot_release);
3548 if (!boot_kobj)
3549 goto put_host;
3550
13483730 3551 return QLA_SUCCESS;
2a991c21
MR		 3552
3553put_host:
3554 scsi_host_put(ha->host);
3555kset_free:
3556 iscsi_boot_destroy_kset(ha->boot_kset);
3557 return -ENOMEM;
3558}
3559
4549415a
LC		 3560
3561/**
3562 * qla4xxx_create chap_list - Create CHAP list from FLASH
3563 * @ha: pointer to adapter structure
3564 *
3565 * Read flash and make a list of CHAP entries, during login when a CHAP entry
3566 * is received, it will be checked in this list. If entry exist then the CHAP
3567 * entry index is set in the DDB. If CHAP entry does not exist in this list
3568 * then a new entry is added in FLASH in CHAP table and the index obtained is
3569 * used in the DDB.
3570 **/
3571static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
3572{
3573 int rval = 0;
3574 uint8_t *chap_flash_data = NULL;
3575 uint32_t offset;
3576 dma_addr_t chap_dma;
3577 uint32_t chap_size = 0;
3578
3579 if (is_qla40XX(ha))
3580 chap_size = MAX_CHAP_ENTRIES_40XX *
3581 sizeof(struct ql4_chap_table);
3582 else /* Single region contains CHAP info for both
3583 * ports which is divided into half for each port.
3584 */
3585 chap_size = ha->hw.flt_chap_size / 2;
3586
3587 chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
3588 &chap_dma, GFP_KERNEL);
3589 if (!chap_flash_data) {
3590 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
3591 return;
3592 }
3593 if (is_qla40XX(ha))
3594 offset = FLASH_CHAP_OFFSET;
3595 else {
3596 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
3597 if (ha->port_num == 1)
3598 offset += chap_size;
3599 }
3600
3601 rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
3602 if (rval != QLA_SUCCESS)
3603 goto exit_chap_list;
3604
3605 if (ha->chap_list == NULL)
3606 ha->chap_list = vmalloc(chap_size);
3607 if (ha->chap_list == NULL) {
3608 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
3609 goto exit_chap_list;
3610 }
3611
3612 memcpy(ha->chap_list, chap_flash_data, chap_size);
3613
3614exit_chap_list:
3615 dma_free_coherent(&ha->pdev->dev, chap_size,
3616 chap_flash_data, chap_dma);
4549415a
LC		 3617}
3618
13483730
MC		 3619static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
3620 struct ql4_tuple_ddb *tddb)
3621{
3622 struct scsi_qla_host *ha;
3623 struct iscsi_cls_session *cls_sess;
3624 struct iscsi_cls_conn *cls_conn;
3625 struct iscsi_session *sess;
3626 struct iscsi_conn *conn;
3627
3628 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3629 ha = ddb_entry->ha;
3630 cls_sess = ddb_entry->sess;
3631 sess = cls_sess->dd_data;
3632 cls_conn = ddb_entry->conn;
3633 conn = cls_conn->dd_data;
3634
3635 tddb->tpgt = sess->tpgt;
3636 tddb->port = conn->persistent_port;
3637 strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
3638 strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
3639}
3640
3641static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
3642 struct ql4_tuple_ddb *tddb)
3643{
3644 uint16_t options = 0;
3645
3646 tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3647 memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
3648 min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
3649
3650 options = le16_to_cpu(fw_ddb_entry->options);
3651 if (options & DDB_OPT_IPV6_DEVICE)
3652 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3653 else
3654 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3655
3656 tddb->port = le16_to_cpu(fw_ddb_entry->port);
3657}
3658
3659static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
3660 struct ql4_tuple_ddb *old_tddb,
3661 struct ql4_tuple_ddb *new_tddb)
3662{
3663 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
3664 return QLA_ERROR;
3665
3666 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
3667 return QLA_ERROR;
3668
3669 if (old_tddb->port != new_tddb->port)
3670 return QLA_ERROR;
3671
3672 DEBUG2(ql4_printk(KERN_INFO, ha,
3673 "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
3674 old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
3675 old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
3676 new_tddb->ip_addr, new_tddb->iscsi_name));
3677
3678 return QLA_SUCCESS;
3679}
3680
3681static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
3682 struct dev_db_entry *fw_ddb_entry)
3683{
3684 struct ddb_entry *ddb_entry;
3685 struct ql4_tuple_ddb *fw_tddb = NULL;
3686 struct ql4_tuple_ddb *tmp_tddb = NULL;
3687 int idx;
3688 int ret = QLA_ERROR;
3689
3690 fw_tddb = vzalloc(sizeof(*fw_tddb));
3691 if (!fw_tddb) {
3692 DEBUG2(ql4_printk(KERN_WARNING, ha,
3693 "Memory Allocation failed.\n"));
3694 ret = QLA_SUCCESS;
3695 goto exit_check;
3696 }
3697
3698 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
3699 if (!tmp_tddb) {
3700 DEBUG2(ql4_printk(KERN_WARNING, ha,
3701 "Memory Allocation failed.\n"));
3702 ret = QLA_SUCCESS;
3703 goto exit_check;
3704 }
3705
3706 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb);
3707
3708 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
3709 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3710 if (ddb_entry == NULL)
3711 continue;
3712
3713 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
3714 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb)) {
3715 ret = QLA_SUCCESS; /* found */
3716 goto exit_check;
3717 }
3718 }
3719
3720exit_check:
3721 if (fw_tddb)
3722 vfree(fw_tddb);
3723 if (tmp_tddb)
3724 vfree(tmp_tddb);
3725 return ret;
3726}
3727
3728static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
3729 struct list_head *list_nt,
3730 struct dev_db_entry *fw_ddb_entry)
3731{
3732 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
3733 struct ql4_tuple_ddb *fw_tddb = NULL;
3734 struct ql4_tuple_ddb *tmp_tddb = NULL;
3735 int ret = QLA_ERROR;
3736
3737 fw_tddb = vzalloc(sizeof(*fw_tddb));
3738 if (!fw_tddb) {
3739 DEBUG2(ql4_printk(KERN_WARNING, ha,
3740 "Memory Allocation failed.\n"));
3741 ret = QLA_SUCCESS;
3742 goto exit_check;
3743 }
3744
3745 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
3746 if (!tmp_tddb) {
3747 DEBUG2(ql4_printk(KERN_WARNING, ha,
3748 "Memory Allocation failed.\n"));
3749 ret = QLA_SUCCESS;
3750 goto exit_check;
3751 }
3752
3753 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb);
3754
3755 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
3756 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb);
3757 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb)) {
3758 ret = QLA_SUCCESS; /* found */
3759 goto exit_check;
3760 }
3761 }
3762
3763exit_check:
3764 if (fw_tddb)
3765 vfree(fw_tddb);
3766 if (tmp_tddb)
3767 vfree(tmp_tddb);
3768 return ret;
3769}
3770
3771static void qla4xxx_free_nt_list(struct list_head *list_nt)
3772{
3773 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
3774
3775 /* Free up the normaltargets list */
3776 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
3777 list_del_init(&nt_ddb_idx->list);
3778 vfree(nt_ddb_idx);
3779 }
3780
3781}
3782
3783static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
3784 struct dev_db_entry *fw_ddb_entry)
3785{
3786 struct iscsi_endpoint *ep;
3787 struct sockaddr_in *addr;
3788 struct sockaddr_in6 *addr6;
3789 struct sockaddr *dst_addr;
3790 char *ip;
3791
3792 /* TODO: need to destroy on unload iscsi_endpoint*/
3793 dst_addr = vmalloc(sizeof(*dst_addr));
3794 if (!dst_addr)
3795 return NULL;
3796
3797 if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
3798 dst_addr->sa_family = AF_INET6;
3799 addr6 = (struct sockaddr_in6 *)dst_addr;
3800 ip = (char *)&addr6->sin6_addr;
3801 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3802 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
3803
3804 } else {
3805 dst_addr->sa_family = AF_INET;
3806 addr = (struct sockaddr_in *)dst_addr;
3807 ip = (char *)&addr->sin_addr;
3808 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
3809 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
3810 }
3811
3812 ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
3813 vfree(dst_addr);
3814 return ep;
3815}
3816
3817static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
3818{
3819 if (ql4xdisablesysfsboot)
3820 return QLA_SUCCESS;
3821 if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
3822 return QLA_ERROR;
3823 return QLA_SUCCESS;
3824}
3825
3826static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
3827 struct ddb_entry *ddb_entry)
3828{
3829 ddb_entry->ddb_type = FLASH_DDB;
3830 ddb_entry->fw_ddb_index = INVALID_ENTRY;
3831 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3832 ddb_entry->ha = ha;
3833 ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
3834 ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
3835
3836 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
3837 atomic_set(&ddb_entry->relogin_timer, 0);
3838 atomic_set(&ddb_entry->relogin_retry_count, 0);
3839
3840 ddb_entry->default_relogin_timeout =
3841 le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
3842 ddb_entry->default_time2wait =
3843 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
3844}
3845
3846static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
3847{
3848 uint32_t idx = 0;
3849 uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
3850 uint32_t sts[MBOX_REG_COUNT];
3851 uint32_t ip_state;
3852 unsigned long wtime;
3853 int ret;
3854
3855 wtime = jiffies + (HZ * IP_CONFIG_TOV);
3856 do {
3857 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
3858 if (ip_idx[idx] == -1)
3859 continue;
3860
3861 ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
3862
3863 if (ret == QLA_ERROR) {
3864 ip_idx[idx] = -1;
3865 continue;
3866 }
3867
3868 ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
3869
3870 DEBUG2(ql4_printk(KERN_INFO, ha,
3871 "Waiting for IP state for idx = %d, state = 0x%x\n",
3872 ip_idx[idx], ip_state));
3873 if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
3874 ip_state == IP_ADDRSTATE_INVALID ||
3875 ip_state == IP_ADDRSTATE_PREFERRED ||
3876 ip_state == IP_ADDRSTATE_DEPRICATED ||
3877 ip_state == IP_ADDRSTATE_DISABLING)
3878 ip_idx[idx] = -1;
3879
3880 }
3881
3882 /* Break if all IP states checked */
3883 if ((ip_idx[0] == -1) &&
3884 (ip_idx[1] == -1) &&
3885 (ip_idx[2] == -1) &&
3886 (ip_idx[3] == -1))
3887 break;
3888 schedule_timeout_uninterruptible(HZ);
3889 } while (time_after(wtime, jiffies));
3890}
3891
3892void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
3893{
3894 int max_ddbs;
3895 int ret;
3896 uint32_t idx = 0, next_idx = 0;
3897 uint32_t state = 0, conn_err = 0;
3898 uint16_t conn_id;
3899 struct dev_db_entry *fw_ddb_entry;
3900 struct ddb_entry *ddb_entry = NULL;
3901 dma_addr_t fw_ddb_dma;
3902 struct iscsi_cls_session *cls_sess;
3903 struct iscsi_session *sess;
3904 struct iscsi_cls_conn *cls_conn;
3905 struct iscsi_endpoint *ep;
3906 uint16_t cmds_max = 32, tmo = 0;
3907 uint32_t initial_cmdsn = 0;
3908 struct list_head list_st, list_nt; /* List of sendtargets */
3909 struct qla_ddb_index *st_ddb_idx, *st_ddb_idx_tmp;
3910 int fw_idx_size;
3911 unsigned long wtime;
3912 struct qla_ddb_index *nt_ddb_idx;
3913
3914 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3915 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
3916 ha->is_reset = is_reset;
3917 return;
3918 }
3919 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
3920 MAX_DEV_DB_ENTRIES;
3921
3922 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
3923 &fw_ddb_dma);
3924 if (fw_ddb_entry == NULL) {
3925 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
3926 goto exit_ddb_list;
3927 }
3928
3929 INIT_LIST_HEAD(&list_st);
3930 INIT_LIST_HEAD(&list_nt);
3931 fw_idx_size = sizeof(struct qla_ddb_index);
3932
3933 for (idx = 0; idx < max_ddbs; idx = next_idx) {
3934 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry,
3935 fw_ddb_dma, NULL,
3936 &next_idx, &state, &conn_err,
3937 NULL, &conn_id);
3938 if (ret == QLA_ERROR)
3939 break;
3940
3941 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
3942 goto continue_next_st;
3943
3944 /* Check if ST, add to the list_st */
3945 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
3946 goto continue_next_st;
3947
3948 st_ddb_idx = vzalloc(fw_idx_size);
3949 if (!st_ddb_idx)
3950 break;
3951
3952 st_ddb_idx->fw_ddb_idx = idx;
3953
3954 list_add_tail(&st_ddb_idx->list, &list_st);
3955continue_next_st:
3956 if (next_idx == 0)
3957 break;
3958 }
3959
3960 /* Before issuing conn open mbox, ensure all IPs states are configured
3961 * Note, conn open fails if IPs are not configured
3962 */
3963 qla4xxx_wait_for_ip_configuration(ha);
3964
3965 /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
3966 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
3967 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
3968 }
3969
3970 /* Wait to ensure all sendtargets are done for min 12 sec wait */
3971 tmo = ((ha->def_timeout < LOGIN_TOV) ? LOGIN_TOV : ha->def_timeout);
3972 DEBUG2(ql4_printk(KERN_INFO, ha,
3973 "Default time to wait for build ddb %d\n", tmo));
3974
3975 wtime = jiffies + (HZ * tmo);
3976 do {
3977 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st,
3978 list) {
3979 ret = qla4xxx_get_fwddb_entry(ha,
3980 st_ddb_idx->fw_ddb_idx,
3981 NULL, 0, NULL, &next_idx,
3982 &state, &conn_err, NULL,
3983 NULL);
3984 if (ret == QLA_ERROR)
3985 continue;
3986
3987 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
3988 state == DDB_DS_SESSION_FAILED) {
3989 list_del_init(&st_ddb_idx->list);
3990 vfree(st_ddb_idx);
3991 }
3992 }
3993 schedule_timeout_uninterruptible(HZ / 10);
3994 } while (time_after(wtime, jiffies));
3995
3996 /* Free up the sendtargets list */
3997 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
3998 list_del_init(&st_ddb_idx->list);
3999 vfree(st_ddb_idx);
4000 }
4001
4002 for (idx = 0; idx < max_ddbs; idx = next_idx) {
4003 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry,
4004 fw_ddb_dma, NULL,
4005 &next_idx, &state, &conn_err,
4006 NULL, &conn_id);
4007 if (ret == QLA_ERROR)
4008 break;
4009
4010 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4011 goto continue_next_nt;
4012
4013 /* Check if NT, then add to list it */
4014 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4015 goto continue_next_nt;
4016
4017 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4018 state == DDB_DS_SESSION_FAILED) {
4019 DEBUG2(ql4_printk(KERN_INFO, ha,
4020 "Adding DDB to session = 0x%x\n",
4021 idx));
4022 if (is_reset == INIT_ADAPTER) {
4023 nt_ddb_idx = vmalloc(fw_idx_size);
4024 if (!nt_ddb_idx)
4025 break;
4026
4027 nt_ddb_idx->fw_ddb_idx = idx;
4028
4029 memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
4030 sizeof(struct dev_db_entry));
4031
4032 if (qla4xxx_is_flash_ddb_exists(ha, &list_nt,
4033 fw_ddb_entry) == QLA_SUCCESS) {
4034 vfree(nt_ddb_idx);
4035 goto continue_next_nt;
4036 }
4037 list_add_tail(&nt_ddb_idx->list, &list_nt);
4038 } else if (is_reset == RESET_ADAPTER) {
4039 if (qla4xxx_is_session_exists(ha,
4040 fw_ddb_entry) == QLA_SUCCESS)
4041 goto continue_next_nt;
4042 }
4043
4044 /* Create session object, with INVALID_ENTRY,
4045 * the targer_id would get set when we issue the login
4046 */
4047 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport,
4048 ha->host, cmds_max,
4049 sizeof(struct ddb_entry),
4050 sizeof(struct ql4_task_data),
4051 initial_cmdsn, INVALID_ENTRY);
4052 if (!cls_sess)
4053 goto exit_ddb_list;
4054
4055 /*
4056 * iscsi_session_setup increments the driver reference
4057 * count which wouldn't let the driver to be unloaded.
4058 * so calling module_put function to decrement the
4059 * reference count.
4060 **/
4061 module_put(qla4xxx_iscsi_transport.owner);
4062 sess = cls_sess->dd_data;
4063 ddb_entry = sess->dd_data;
4064 ddb_entry->sess = cls_sess;
4065
4066 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4067 memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4068 sizeof(struct dev_db_entry));
4069
4070 qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4071
4072 cls_conn = iscsi_conn_setup(cls_sess,
4073 sizeof(struct qla_conn),
4074 conn_id);
4075 if (!cls_conn)
4076 goto exit_ddb_list;
4077
4078 ddb_entry->conn = cls_conn;
4079
4080 /* Setup ep, for displaying attributes in sysfs */
4081 ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4082 if (ep) {
4083 ep->conn = cls_conn;
4084 cls_conn->ep = ep;
4085 } else {
4086 DEBUG2(ql4_printk(KERN_ERR, ha,
4087 "Unable to get ep\n"));
4088 }
4089
4090 /* Update sess/conn params */
4091 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess,
4092 cls_conn);
4093
4094 if (is_reset == RESET_ADAPTER) {
4095 iscsi_block_session(cls_sess);
4096 /* Use the relogin path to discover new devices
4097 * by short-circuting the logic of setting
4098 * timer to relogin - instead set the flags
4099 * to initiate login right away.
4100 */
4101 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4102 set_bit(DF_RELOGIN, &ddb_entry->flags);
4103 }
4104 }
4105continue_next_nt:
4106 if (next_idx == 0)
4107 break;
4108 }
4109exit_ddb_list:
4110 qla4xxx_free_nt_list(&list_nt);
4111 if (fw_ddb_entry)
4112 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4113
4114 qla4xxx_free_ddb_index(ha);
4115}
4116
4117
afaf5a2d
DS		 4118/**
4119 * qla4xxx_probe_adapter - callback function to probe HBA
4120 * @pdev: pointer to pci_dev structure
4121 * @pci_device_id: pointer to pci_device entry
4122 *
4123 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
4124 * It returns zero if successful. It also initializes all data necessary for
4125 * the driver.
4126 **/
4127static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
4128 const struct pci_device_id *ent)
4129{
4130 int ret = -ENODEV, status;
4131 struct Scsi_Host *host;
4132 struct scsi_qla_host *ha;
afaf5a2d
DS		 4133 uint8_t init_retry_count = 0;
4134 char buf[34];
f4f5df23 4135 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
f9880e76 4136 uint32_t dev_state;
afaf5a2d
DS		 4137
4138 if (pci_enable_device(pdev))
4139 return -1;
4140
b3a271a9 4141 host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
afaf5a2d
DS		 4142 if (host == NULL) {
4143 printk(KERN_WARNING
4144 "qla4xxx: Couldn't allocate host from scsi layer!\n");
4145 goto probe_disable_device;
4146 }
4147
4148 /* Clear our data area */
b3a271a9 4149 ha = to_qla_host(host);
afaf5a2d
DS		 4150 memset(ha, 0, sizeof(*ha));
4151
4152 /* Save the information from PCI BIOS. */
4153 ha->pdev = pdev;
4154 ha->host = host;
4155 ha->host_no = host->host_no;
4156
2232be0d
LC		 4157 pci_enable_pcie_error_reporting(pdev);
4158
f4f5df23
VC		 4159 /* Setup Runtime configurable options */
4160 if (is_qla8022(ha)) {
4161 ha->isp_ops = &qla4_8xxx_isp_ops;
4162 rwlock_init(&ha->hw_lock);
4163 ha->qdr_sn_window = -1;
4164 ha->ddr_mn_window = -1;
4165 ha->curr_window = 255;
4166 ha->func_num = PCI_FUNC(ha->pdev->devfn);
4167 nx_legacy_intr = &legacy_intr[ha->func_num];
4168 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
4169 ha->nx_legacy_intr.tgt_status_reg =
4170 nx_legacy_intr->tgt_status_reg;
4171 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
4172 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
4173 } else {
4174 ha->isp_ops = &qla4xxx_isp_ops;
4175 }
4176
2232be0d
LC		 4177 /* Set EEH reset type to fundamental if required by hba */
4178 if (is_qla8022(ha))
4179 pdev->needs_freset = 1;
4180
afaf5a2d 4181 /* Configure PCI I/O space. */
f4f5df23 4182 ret = ha->isp_ops->iospace_config(ha);
afaf5a2d 4183 if (ret)
f4f5df23 4184 goto probe_failed_ioconfig;
afaf5a2d 4185
c2660df3 4186 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
afaf5a2d
DS		 4187 pdev->device, pdev->irq, ha->reg);
4188
4189 qla4xxx_config_dma_addressing(ha);
4190
4191 /* Initialize lists and spinlocks. */
afaf5a2d
DS		 4192 INIT_LIST_HEAD(&ha->free_srb_q);
4193
4194 mutex_init(&ha->mbox_sem);
4549415a 4195 mutex_init(&ha->chap_sem);
f4f5df23 4196 init_completion(&ha->mbx_intr_comp);
95d31262 4197 init_completion(&ha->disable_acb_comp);
afaf5a2d
DS		 4198
4199 spin_lock_init(&ha->hardware_lock);
afaf5a2d
DS		 4200
4201 /* Allocate dma buffers */
4202 if (qla4xxx_mem_alloc(ha)) {
c2660df3
VC		 4203 ql4_printk(KERN_WARNING, ha,
4204 "[ERROR] Failed to allocate memory for adapter\n");
afaf5a2d
DS		 4205
4206 ret = -ENOMEM;
4207 goto probe_failed;
4208 }
4209
b3a271a9
MR		 4210 host->cmd_per_lun = 3;
4211 host->max_channel = 0;
4212 host->max_lun = MAX_LUNS - 1;
4213 host->max_id = MAX_TARGETS;
4214 host->max_cmd_len = IOCB_MAX_CDB_LEN;
4215 host->can_queue = MAX_SRBS ;
4216 host->transportt = qla4xxx_scsi_transport;
4217
4218 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
4219 if (ret) {
4220 ql4_printk(KERN_WARNING, ha,
4221 "%s: scsi_init_shared_tag_map failed\n", __func__);
4222 goto probe_failed;
4223 }
4224
4225 pci_set_drvdata(pdev, ha);
4226
4227 ret = scsi_add_host(host, &pdev->dev);
4228 if (ret)
4229 goto probe_failed;
4230
f4f5df23
VC		 4231 if (is_qla8022(ha))
4232 (void) qla4_8xxx_get_flash_info(ha);
4233
afaf5a2d
DS		 4234 /*
4235 * Initialize the Host adapter request/response queues and
4236 * firmware
4237 * NOTE: interrupts enabled upon successful completion
4238 */
13483730 4239 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
f4f5df23
VC		 4240 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
4241 init_retry_count++ < MAX_INIT_RETRIES) {
f9880e76
PM		 4242
4243 if (is_qla8022(ha)) {
4244 qla4_8xxx_idc_lock(ha);
4245 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
4246 qla4_8xxx_idc_unlock(ha);
4247 if (dev_state == QLA82XX_DEV_FAILED) {
4248 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
4249 "initialize adapter. H/W is in failed state\n",
4250 __func__);
4251 break;
4252 }
4253 }
afaf5a2d
DS		 4254 DEBUG2(printk("scsi: %s: retrying adapter initialization "
4255 "(%d)\n", __func__, init_retry_count));
f4f5df23
VC		 4256
4257 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
4258 continue;
4259
13483730 4260 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
afaf5a2d 4261 }
f4f5df23
VC		 4262
4263 if (!test_bit(AF_ONLINE, &ha->flags)) {
c2660df3 4264 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
afaf5a2d 4265
fe998527
LC		 4266 if (is_qla8022(ha) && ql4xdontresethba) {
4267 /* Put the device in failed state. */
4268 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
4269 qla4_8xxx_idc_lock(ha);
4270 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
4271 QLA82XX_DEV_FAILED);
4272 qla4_8xxx_idc_unlock(ha);
4273 }
afaf5a2d 4274 ret = -ENODEV;
b3a271a9 4275 goto remove_host;
afaf5a2d
DS		 4276 }
4277
afaf5a2d
DS		 4278 /* Startup the kernel thread for this host adapter. */
4279 DEBUG2(printk("scsi: %s: Starting kernel thread for "
4280 "qla4xxx_dpc\n", __func__));
4281 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
4282 ha->dpc_thread = create_singlethread_workqueue(buf);
4283 if (!ha->dpc_thread) {
c2660df3 4284 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
afaf5a2d 4285 ret = -ENODEV;
b3a271a9 4286 goto remove_host;
afaf5a2d 4287 }
c4028958 4288 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
afaf5a2d 4289
b3a271a9
MR		 4290 sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
4291 ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
4292 if (!ha->task_wq) {
4293 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
4294 ret = -ENODEV;
4295 goto remove_host;
4296 }
4297
f4f5df23
VC		 4298 /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
4299 * (which is called indirectly by qla4xxx_initialize_adapter),
4300 * so that irqs will be registered after crbinit but before
4301 * mbx_intr_enable.
4302 */
4303 if (!is_qla8022(ha)) {
4304 ret = qla4xxx_request_irqs(ha);
4305 if (ret) {
4306 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
4307 "interrupt %d already in use.\n", pdev->irq);
b3a271a9 4308 goto remove_host;
f4f5df23 4309 }
afaf5a2d 4310 }
afaf5a2d 4311
2232be0d 4312 pci_save_state(ha->pdev);
f4f5df23 4313 ha->isp_ops->enable_intrs(ha);
afaf5a2d
DS		 4314
4315 /* Start timer thread. */
4316 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
4317
4318 set_bit(AF_INIT_DONE, &ha->flags);
4319
afaf5a2d
DS		 4320 printk(KERN_INFO
4321 " QLogic iSCSI HBA Driver version: %s\n"
4322 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
4323 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
4324 ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
4325 ha->patch_number, ha->build_number);
ed1086e0 4326
2a991c21
MR		 4327 if (qla4xxx_setup_boot_info(ha))
4328 ql4_printk(KERN_ERR, ha, "%s:ISCSI boot info setup failed\n",
4329 __func__);
4330
13483730
MC		 4331 /* Perform the build ddb list and login to each */
4332 qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
4333 iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
4334
4335 qla4xxx_create_chap_list(ha);
4336
ed1086e0 4337 qla4xxx_create_ifaces(ha);
afaf5a2d
DS		 4338 return 0;
4339
b3a271a9
MR		 4340remove_host:
4341 scsi_remove_host(ha->host);
4342
afaf5a2d
DS		 4343probe_failed:
4344 qla4xxx_free_adapter(ha);
f4f5df23
VC		 4345
4346probe_failed_ioconfig:
2232be0d 4347 pci_disable_pcie_error_reporting(pdev);
afaf5a2d
DS		 4348 scsi_host_put(ha->host);
4349
4350probe_disable_device:
4351 pci_disable_device(pdev);
4352
4353 return ret;
4354}
4355
7eece5a0
KH		 4356/**
4357 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
4358 * @ha: pointer to adapter structure
4359 *
4360 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
4361 * so that the other port will not re-initialize while in the process of
4362 * removing the ha due to driver unload or hba hotplug.
4363 **/
4364static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
4365{
4366 struct scsi_qla_host *other_ha = NULL;
4367 struct pci_dev *other_pdev = NULL;
4368 int fn = ISP4XXX_PCI_FN_2;
4369
4370 /*iscsi function numbers for ISP4xxx is 1 and 3*/
4371 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
4372 fn = ISP4XXX_PCI_FN_1;
4373
4374 other_pdev =
4375 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
4376 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
4377 fn));
4378
4379 /* Get other_ha if other_pdev is valid and state is enable*/
4380 if (other_pdev) {
4381 if (atomic_read(&other_pdev->enable_cnt)) {
4382 other_ha = pci_get_drvdata(other_pdev);
4383 if (other_ha) {
4384 set_bit(AF_HA_REMOVAL, &other_ha->flags);
4385 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
4386 "Prevent %s reinit\n", __func__,
4387 dev_name(&other_ha->pdev->dev)));
4388 }
4389 }
4390 pci_dev_put(other_pdev);
4391 }
4392}
4393
13483730
MC		 4394static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
4395{
4396 struct ddb_entry *ddb_entry;
4397 int options;
4398 int idx;
4399
4400 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4401
4402 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4403 if ((ddb_entry != NULL) &&
4404 (ddb_entry->ddb_type == FLASH_DDB)) {
4405
4406 options = LOGOUT_OPTION_CLOSE_SESSION;
4407 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
4408 == QLA_ERROR)
4409 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
4410 __func__);
4411
4412 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
4413 /*
4414 * we have decremented the reference count of the driver
4415 * when we setup the session to have the driver unload
4416 * to be seamless without actually destroying the
4417 * session
4418 **/
4419 try_module_get(qla4xxx_iscsi_transport.owner);
4420 iscsi_destroy_endpoint(ddb_entry->conn->ep);
4421 qla4xxx_free_ddb(ha, ddb_entry);
4422 iscsi_session_teardown(ddb_entry->sess);
4423 }
4424 }
4425}
afaf5a2d
DS		 4426/**
4427 * qla4xxx_remove_adapter - calback function to remove adapter.
4428 * @pci_dev: PCI device pointer
4429 **/
4430static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
4431{
4432 struct scsi_qla_host *ha;
4433
4434 ha = pci_get_drvdata(pdev);
4435
7eece5a0
KH		 4436 if (!is_qla8022(ha))
4437 qla4xxx_prevent_other_port_reinit(ha);
bee4fe8e 4438
ed1086e0
VC		 4439 /* destroy iface from sysfs */
4440 qla4xxx_destroy_ifaces(ha);
4441
13483730 4442 if ((!ql4xdisablesysfsboot) && ha->boot_kset)
2a991c21
MR		 4443 iscsi_boot_destroy_kset(ha->boot_kset);
4444
13483730
MC		 4445 qla4xxx_destroy_fw_ddb_session(ha);
4446
afaf5a2d
DS		 4447 scsi_remove_host(ha->host);
4448
4449 qla4xxx_free_adapter(ha);
4450
4451 scsi_host_put(ha->host);
4452
2232be0d 4453 pci_disable_pcie_error_reporting(pdev);
f4f5df23 4454 pci_disable_device(pdev);
afaf5a2d
DS		 4455 pci_set_drvdata(pdev, NULL);
4456}
4457
4458/**
4459 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
4460 * @ha: HA context
4461 *
4462 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
4463 * supported addressing method.
4464 */
47975477 4465static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
afaf5a2d
DS		 4466{
4467 int retval;
4468
4469 /* Update our PCI device dma_mask for full 64 bit mask */
6a35528a
YH		 4470 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
4471 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
afaf5a2d
DS		 4472 dev_dbg(&ha->pdev->dev,
4473 "Failed to set 64 bit PCI consistent mask; "
4474 "using 32 bit.\n");
4475 retval = pci_set_consistent_dma_mask(ha->pdev,
284901a9 4476 DMA_BIT_MASK(32));
afaf5a2d
DS		 4477 }
4478 } else
284901a9 4479 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
afaf5a2d
DS		 4480}
4481
4482static int qla4xxx_slave_alloc(struct scsi_device *sdev)
4483{
b3a271a9
MR		 4484 struct iscsi_cls_session *cls_sess;
4485 struct iscsi_session *sess;
4486 struct ddb_entry *ddb;
8bb4033d 4487 int queue_depth = QL4_DEF_QDEPTH;
afaf5a2d 4488
b3a271a9
MR		 4489 cls_sess = starget_to_session(sdev->sdev_target);
4490 sess = cls_sess->dd_data;
4491 ddb = sess->dd_data;
4492
afaf5a2d
DS		 4493 sdev->hostdata = ddb;
4494 sdev->tagged_supported = 1;
8bb4033d
VC		 4495
4496 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
4497 queue_depth = ql4xmaxqdepth;
4498
4499 scsi_activate_tcq(sdev, queue_depth);
afaf5a2d
DS		 4500 return 0;
4501}
4502
4503static int qla4xxx_slave_configure(struct scsi_device *sdev)
4504{
4505 sdev->tagged_supported = 1;
4506 return 0;
4507}
4508
4509static void qla4xxx_slave_destroy(struct scsi_device *sdev)
4510{
4511 scsi_deactivate_tcq(sdev, 1);
4512}
4513
4514/**
4515 * qla4xxx_del_from_active_array - returns an active srb
4516 * @ha: Pointer to host adapter structure.
fd589a8f 4517 * @index: index into the active_array
afaf5a2d
DS		 4518 *
4519 * This routine removes and returns the srb at the specified index
4520 **/
f4f5df23
VC		 4521struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
4522 uint32_t index)
afaf5a2d
DS		 4523{
4524 struct srb *srb = NULL;
5369887a 4525 struct scsi_cmnd *cmd = NULL;
afaf5a2d 4526
5369887a
VC		 4527 cmd = scsi_host_find_tag(ha->host, index);
4528 if (!cmd)
afaf5a2d
DS		 4529 return srb;
4530
5369887a
VC		 4531 srb = (struct srb *)CMD_SP(cmd);
4532 if (!srb)
afaf5a2d
DS		 4533 return srb;
4534
4535 /* update counters */
4536 if (srb->flags & SRB_DMA_VALID) {
4537 ha->req_q_count += srb->iocb_cnt;
4538 ha->iocb_cnt -= srb->iocb_cnt;
4539 if (srb->cmd)
5369887a
VC		 4540 srb->cmd->host_scribble =
4541 (unsigned char *)(unsigned long) MAX_SRBS;
afaf5a2d
DS		 4542 }
4543 return srb;
4544}
4545
afaf5a2d
DS		 4546/**
4547 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
09a0f719 4548 * @ha: Pointer to host adapter structure.
afaf5a2d
DS		 4549 * @cmd: Scsi Command to wait on.
4550 *
4551 * This routine waits for the command to be returned by the Firmware
4552 * for some max time.
4553 **/
4554static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
4555 struct scsi_cmnd *cmd)
4556{
4557 int done = 0;
4558 struct srb *rp;
4559 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
2232be0d
LC		 4560 int ret = SUCCESS;
4561
4562 /* Dont wait on command if PCI error is being handled
4563 * by PCI AER driver
4564 */
4565 if (unlikely(pci_channel_offline(ha->pdev)) ||
4566 (test_bit(AF_EEH_BUSY, &ha->flags))) {
4567 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
4568 ha->host_no, __func__);
4569 return ret;
4570 }
afaf5a2d
DS		 4571
4572 do {
4573 /* Checking to see if its returned to OS */
5369887a 4574 rp = (struct srb *) CMD_SP(cmd);
afaf5a2d
DS		 4575 if (rp == NULL) {
4576 done++;
4577 break;
4578 }
4579
4580 msleep(2000);
4581 } while (max_wait_time--);
4582
4583 return done;
4584}
4585
4586/**
4587 * qla4xxx_wait_for_hba_online - waits for HBA to come online
4588 * @ha: Pointer to host adapter structure
4589 **/
4590static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
4591{
4592 unsigned long wait_online;
4593
f581a3f7 4594 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
afaf5a2d
DS		 4595 while (time_before(jiffies, wait_online)) {
4596
4597 if (adapter_up(ha))
4598 return QLA_SUCCESS;
afaf5a2d
DS		 4599
4600 msleep(2000);
4601 }
4602
4603 return QLA_ERROR;
4604}
4605
4606/**
ce545039 4607 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
fd589a8f 4608 * @ha: pointer to HBA
afaf5a2d
DS		 4609 * @t: target id
4610 * @l: lun id
4611 *
4612 * This function waits for all outstanding commands to a lun to complete. It
4613 * returns 0 if all pending commands are returned and 1 otherwise.
4614 **/
ce545039
MC		 4615static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
4616 struct scsi_target *stgt,
4617 struct scsi_device *sdev)
afaf5a2d
DS		 4618{
4619 int cnt;
4620 int status = 0;
4621 struct scsi_cmnd *cmd;
4622
4623 /*
ce545039
MC		 4624 * Waiting for all commands for the designated target or dev
4625 * in the active array
afaf5a2d
DS		 4626 */
4627 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
4628 cmd = scsi_host_find_tag(ha->host, cnt);
ce545039
MC		 4629 if (cmd && stgt == scsi_target(cmd->device) &&
4630 (!sdev || sdev == cmd->device)) {
afaf5a2d
DS		 4631 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
4632 status++;
4633 break;
4634 }
4635 }
4636 }
4637 return status;
4638}
4639
09a0f719
VC		 4640/**
4641 * qla4xxx_eh_abort - callback for abort task.
4642 * @cmd: Pointer to Linux's SCSI command structure
4643 *
4644 * This routine is called by the Linux OS to abort the specified
4645 * command.
4646 **/
4647static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
4648{
4649 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
4650 unsigned int id = cmd->device->id;
4651 unsigned int lun = cmd->device->lun;
92b3e5bb 4652 unsigned long flags;
09a0f719
VC		 4653 struct srb *srb = NULL;
4654 int ret = SUCCESS;
4655 int wait = 0;
4656
c2660df3 4657 ql4_printk(KERN_INFO, ha,
5cd049a5
CH		 4658 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
4659 ha->host_no, id, lun, cmd);
09a0f719 4660
92b3e5bb 4661 spin_lock_irqsave(&ha->hardware_lock, flags);
09a0f719 4662 srb = (struct srb *) CMD_SP(cmd);
92b3e5bb
MC		 4663 if (!srb) {
4664 spin_unlock_irqrestore(&ha->hardware_lock, flags);
09a0f719 4665 return SUCCESS;
92b3e5bb 4666 }
09a0f719 4667 kref_get(&srb->srb_ref);
92b3e5bb 4668 spin_unlock_irqrestore(&ha->hardware_lock, flags);
09a0f719
VC		 4669
4670 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
4671 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
4672 ha->host_no, id, lun));
4673 ret = FAILED;
4674 } else {
4675 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
4676 ha->host_no, id, lun));
4677 wait = 1;
4678 }
4679
4680 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4681
4682 /* Wait for command to complete */
4683 if (wait) {
4684 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
4685 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
4686 ha->host_no, id, lun));
4687 ret = FAILED;
4688 }
4689 }
4690
c2660df3 4691 ql4_printk(KERN_INFO, ha,
09a0f719 4692 "scsi%ld:%d:%d: Abort command - %s\n",
25985edc 4693 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
09a0f719
VC		 4694
4695 return ret;
4696}
4697
afaf5a2d
DS		 4698/**
4699 * qla4xxx_eh_device_reset - callback for target reset.
4700 * @cmd: Pointer to Linux's SCSI command structure
4701 *
4702 * This routine is called by the Linux OS to reset all luns on the
4703 * specified target.
4704 **/
4705static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
4706{
4707 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
4708 struct ddb_entry *ddb_entry = cmd->device->hostdata;
afaf5a2d
DS		 4709 int ret = FAILED, stat;
4710
612f7348 4711 if (!ddb_entry)
afaf5a2d
DS		 4712 return ret;
4713
c01be6dc
MC		 4714 ret = iscsi_block_scsi_eh(cmd);
4715 if (ret)
4716 return ret;
4717 ret = FAILED;
4718
c2660df3 4719 ql4_printk(KERN_INFO, ha,
afaf5a2d
DS		 4720 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
4721 cmd->device->channel, cmd->device->id, cmd->device->lun);
4722
4723 DEBUG2(printk(KERN_INFO
4724 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
4725 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
242f9dcb 4726 cmd, jiffies, cmd->request->timeout / HZ,
afaf5a2d
DS		 4727 ha->dpc_flags, cmd->result, cmd->allowed));
4728
4729 /* FIXME: wait for hba to go online */
4730 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
4731 if (stat != QLA_SUCCESS) {
c2660df3 4732 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
afaf5a2d
DS		 4733 goto eh_dev_reset_done;
4734 }
4735
ce545039
MC		 4736 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
4737 cmd->device)) {
c2660df3 4738 ql4_printk(KERN_INFO, ha,
ce545039
MC		 4739 "DEVICE RESET FAILED - waiting for "
4740 "commands.\n");
4741 goto eh_dev_reset_done;
afaf5a2d
DS		 4742 }
4743
9d562913
DS		 4744 /* Send marker. */
4745 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
4746 MM_LUN_RESET) != QLA_SUCCESS)
4747 goto eh_dev_reset_done;
4748
c2660df3 4749 ql4_printk(KERN_INFO, ha,
afaf5a2d
DS		 4750 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
4751 ha->host_no, cmd->device->channel, cmd->device->id,
4752 cmd->device->lun);
4753
4754 ret = SUCCESS;
4755
4756eh_dev_reset_done:
4757
4758 return ret;
4759}
4760
ce545039
MC		 4761/**
4762 * qla4xxx_eh_target_reset - callback for target reset.
4763 * @cmd: Pointer to Linux's SCSI command structure
4764 *
4765 * This routine is called by the Linux OS to reset the target.
4766 **/
4767static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
4768{
4769 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
4770 struct ddb_entry *ddb_entry = cmd->device->hostdata;
c01be6dc 4771 int stat, ret;
ce545039
MC		 4772
4773 if (!ddb_entry)
4774 return FAILED;
4775
c01be6dc
MC		 4776 ret = iscsi_block_scsi_eh(cmd);
4777 if (ret)
4778 return ret;
4779
ce545039
MC		 4780 starget_printk(KERN_INFO, scsi_target(cmd->device),
4781 "WARM TARGET RESET ISSUED.\n");
4782
4783 DEBUG2(printk(KERN_INFO
4784 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
4785 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
242f9dcb 4786 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
ce545039
MC		 4787 ha->dpc_flags, cmd->result, cmd->allowed));
4788
4789 stat = qla4xxx_reset_target(ha, ddb_entry);
4790 if (stat != QLA_SUCCESS) {
4791 starget_printk(KERN_INFO, scsi_target(cmd->device),
4792 "WARM TARGET RESET FAILED.\n");
4793 return FAILED;
4794 }
4795
ce545039
MC		 4796 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
4797 NULL)) {
4798 starget_printk(KERN_INFO, scsi_target(cmd->device),
4799 "WARM TARGET DEVICE RESET FAILED - "
4800 "waiting for commands.\n");
4801 return FAILED;
4802 }
4803
9d562913
DS		 4804 /* Send marker. */
4805 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
4806 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
4807 starget_printk(KERN_INFO, scsi_target(cmd->device),
4808 "WARM TARGET DEVICE RESET FAILED - "
4809 "marker iocb failed.\n");
4810 return FAILED;
4811 }
4812
ce545039
MC		 4813 starget_printk(KERN_INFO, scsi_target(cmd->device),
4814 "WARM TARGET RESET SUCCEEDED.\n");
4815 return SUCCESS;
4816}
4817
afaf5a2d
DS		 4818/**
4819 * qla4xxx_eh_host_reset - kernel callback
4820 * @cmd: Pointer to Linux's SCSI command structure
4821 *
4822 * This routine is invoked by the Linux kernel to perform fatal error
4823 * recovery on the specified adapter.
4824 **/
4825static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
4826{
4827 int return_status = FAILED;
4828 struct scsi_qla_host *ha;
4829
b3a271a9 4830 ha = to_qla_host(cmd->device->host);
afaf5a2d 4831
f4f5df23
VC		 4832 if (ql4xdontresethba) {
4833 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
4834 ha->host_no, __func__));
4835 return FAILED;
4836 }
4837
c2660df3 4838 ql4_printk(KERN_INFO, ha,
dca05c4c 4839 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
afaf5a2d
DS		 4840 cmd->device->channel, cmd->device->id, cmd->device->lun);
4841
4842 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
4843 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
4844 "DEAD.\n", ha->host_no, cmd->device->channel,
4845 __func__));
4846
4847 return FAILED;
4848 }
4849
f4f5df23
VC		 4850 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4851 if (is_qla8022(ha))
4852 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4853 else
4854 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4855 }
50a29aec 4856
f4f5df23 4857 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
afaf5a2d 4858 return_status = SUCCESS;
afaf5a2d 4859
c2660df3 4860 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
25985edc 4861 return_status == FAILED ? "FAILED" : "SUCCEEDED");
afaf5a2d
DS		 4862
4863 return return_status;
4864}
4865
95d31262
VC		 4866static int qla4xxx_context_reset(struct scsi_qla_host *ha)
4867{
4868 uint32_t mbox_cmd[MBOX_REG_COUNT];
4869 uint32_t mbox_sts[MBOX_REG_COUNT];
4870 struct addr_ctrl_blk_def *acb = NULL;
4871 uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
4872 int rval = QLA_SUCCESS;
4873 dma_addr_t acb_dma;
4874
4875 acb = dma_alloc_coherent(&ha->pdev->dev,
4876 sizeof(struct addr_ctrl_blk_def),
4877 &acb_dma, GFP_KERNEL);
4878 if (!acb) {
4879 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
4880 __func__);
4881 rval = -ENOMEM;
4882 goto exit_port_reset;
4883 }
4884
4885 memset(acb, 0, acb_len);
4886
4887 rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
4888 if (rval != QLA_SUCCESS) {
4889 rval = -EIO;
4890 goto exit_free_acb;
4891 }
4892
4893 rval = qla4xxx_disable_acb(ha);
4894 if (rval != QLA_SUCCESS) {
4895 rval = -EIO;
4896 goto exit_free_acb;
4897 }
4898
4899 wait_for_completion_timeout(&ha->disable_acb_comp,
4900 DISABLE_ACB_TOV * HZ);
4901
4902 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
4903 if (rval != QLA_SUCCESS) {
4904 rval = -EIO;
4905 goto exit_free_acb;
4906 }
4907
4908exit_free_acb:
4909 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
4910 acb, acb_dma);
4911exit_port_reset:
4912 DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
4913 rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
4914 return rval;
4915}
4916
4917static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
4918{
4919 struct scsi_qla_host *ha = to_qla_host(shost);
4920 int rval = QLA_SUCCESS;
4921
4922 if (ql4xdontresethba) {
4923 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
4924 __func__));
4925 rval = -EPERM;
4926 goto exit_host_reset;
4927 }
4928
4929 rval = qla4xxx_wait_for_hba_online(ha);
4930 if (rval != QLA_SUCCESS) {
4931 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
4932 "adapter\n", __func__));
4933 rval = -EIO;
4934 goto exit_host_reset;
4935 }
4936
4937 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4938 goto recover_adapter;
4939
4940 switch (reset_type) {
4941 case SCSI_ADAPTER_RESET:
4942 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4943 break;
4944 case SCSI_FIRMWARE_RESET:
4945 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4946 if (is_qla8022(ha))
4947 /* set firmware context reset */
4948 set_bit(DPC_RESET_HA_FW_CONTEXT,
4949 &ha->dpc_flags);
4950 else {
4951 rval = qla4xxx_context_reset(ha);
4952 goto exit_host_reset;
4953 }
4954 }
4955 break;
4956 }
4957
4958recover_adapter:
4959 rval = qla4xxx_recover_adapter(ha);
4960 if (rval != QLA_SUCCESS) {
4961 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
4962 __func__));
4963 rval = -EIO;
4964 }
4965
4966exit_host_reset:
4967 return rval;
4968}
4969
2232be0d
LC		 4970/* PCI AER driver recovers from all correctable errors w/o
4971 * driver intervention. For uncorrectable errors PCI AER
4972 * driver calls the following device driver's callbacks
4973 *
4974 * - Fatal Errors - link_reset
4975 * - Non-Fatal Errors - driver's pci_error_detected() which
4976 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
4977 *
4978 * PCI AER driver calls
4979 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
4980 * returns RECOVERED or NEED_RESET if fw_hung
4981 * NEED_RESET - driver's slot_reset()
4982 * DISCONNECT - device is dead & cannot recover
4983 * RECOVERED - driver's pci_resume()
4984 */
4985static pci_ers_result_t
4986qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
4987{
4988 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
4989
4990 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
4991 ha->host_no, __func__, state);
4992
4993 if (!is_aer_supported(ha))
4994 return PCI_ERS_RESULT_NONE;
4995
4996 switch (state) {
4997 case pci_channel_io_normal:
4998 clear_bit(AF_EEH_BUSY, &ha->flags);
4999 return PCI_ERS_RESULT_CAN_RECOVER;
5000 case pci_channel_io_frozen:
5001 set_bit(AF_EEH_BUSY, &ha->flags);
5002 qla4xxx_mailbox_premature_completion(ha);
5003 qla4xxx_free_irqs(ha);
5004 pci_disable_device(pdev);
7b3595df
VC		 5005 /* Return back all IOs */
5006 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2232be0d
LC		 5007 return PCI_ERS_RESULT_NEED_RESET;
5008 case pci_channel_io_perm_failure:
5009 set_bit(AF_EEH_BUSY, &ha->flags);
5010 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
5011 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5012 return PCI_ERS_RESULT_DISCONNECT;
5013 }
5014 return PCI_ERS_RESULT_NEED_RESET;
5015}
5016
5017/**
5018 * qla4xxx_pci_mmio_enabled() gets called if
5019 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
5020 * and read/write to the device still works.
5021 **/
5022static pci_ers_result_t
5023qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
5024{
5025 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5026
5027 if (!is_aer_supported(ha))
5028 return PCI_ERS_RESULT_NONE;
5029
7b3595df 5030 return PCI_ERS_RESULT_RECOVERED;
2232be0d
LC		 5031}
5032
7b3595df 5033static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
2232be0d
LC		 5034{
5035 uint32_t rval = QLA_ERROR;
7b3595df 5036 uint32_t ret = 0;
2232be0d
LC		 5037 int fn;
5038 struct pci_dev *other_pdev = NULL;
5039
5040 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
5041
5042 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5043
5044 if (test_bit(AF_ONLINE, &ha->flags)) {
5045 clear_bit(AF_ONLINE, &ha->flags);
b3a271a9
MR		 5046 clear_bit(AF_LINK_UP, &ha->flags);
5047 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2232be0d 5048 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2232be0d
LC		 5049 }
5050
5051 fn = PCI_FUNC(ha->pdev->devfn);
5052 while (fn > 0) {
5053 fn--;
5054 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
5055 "func %x\n", ha->host_no, __func__, fn);
5056 /* Get the pci device given the domain, bus,
5057 * slot/function number */
5058 other_pdev =
5059 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5060 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5061 fn));
5062
5063 if (!other_pdev)
5064 continue;
5065
5066 if (atomic_read(&other_pdev->enable_cnt)) {
5067 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
5068 "func in enabled state%x\n", ha->host_no,
5069 __func__, fn);
5070 pci_dev_put(other_pdev);
5071 break;
5072 }
5073 pci_dev_put(other_pdev);
5074 }
5075
5076 /* The first function on the card, the reset owner will
5077 * start & initialize the firmware. The other functions
5078 * on the card will reset the firmware context
5079 */
5080 if (!fn) {
5081 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
5082 "0x%x is the owner\n", ha->host_no, __func__,
5083 ha->pdev->devfn);
5084
5085 qla4_8xxx_idc_lock(ha);
5086 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5087 QLA82XX_DEV_COLD);
5088
5089 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
5090 QLA82XX_IDC_VERSION);
5091
5092 qla4_8xxx_idc_unlock(ha);
5093 clear_bit(AF_FW_RECOVERY, &ha->flags);
13483730 5094 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
2232be0d
LC		 5095 qla4_8xxx_idc_lock(ha);
5096
5097 if (rval != QLA_SUCCESS) {
5098 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
5099 "FAILED\n", ha->host_no, __func__);
5100 qla4_8xxx_clear_drv_active(ha);
5101 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5102 QLA82XX_DEV_FAILED);
5103 } else {
5104 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
5105 "READY\n", ha->host_no, __func__);
5106 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5107 QLA82XX_DEV_READY);
5108 /* Clear driver state register */
5109 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
5110 qla4_8xxx_set_drv_active(ha);
7b3595df
VC		 5111 ret = qla4xxx_request_irqs(ha);
5112 if (ret) {
5113 ql4_printk(KERN_WARNING, ha, "Failed to "
5114 "reserve interrupt %d already in use.\n",
5115 ha->pdev->irq);
5116 rval = QLA_ERROR;
5117 } else {
5118 ha->isp_ops->enable_intrs(ha);
5119 rval = QLA_SUCCESS;
5120 }
2232be0d
LC		 5121 }
5122 qla4_8xxx_idc_unlock(ha);
5123 } else {
5124 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
5125 "the reset owner\n", ha->host_no, __func__,
5126 ha->pdev->devfn);
5127 if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
5128 QLA82XX_DEV_READY)) {
5129 clear_bit(AF_FW_RECOVERY, &ha->flags);
13483730 5130 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
7b3595df
VC		 5131 if (rval == QLA_SUCCESS) {
5132 ret = qla4xxx_request_irqs(ha);
5133 if (ret) {
5134 ql4_printk(KERN_WARNING, ha, "Failed to"
5135 " reserve interrupt %d already in"
5136 " use.\n", ha->pdev->irq);
5137 rval = QLA_ERROR;
5138 } else {
5139 ha->isp_ops->enable_intrs(ha);
5140 rval = QLA_SUCCESS;
5141 }
5142 }
2232be0d
LC		 5143 qla4_8xxx_idc_lock(ha);
5144 qla4_8xxx_set_drv_active(ha);
5145 qla4_8xxx_idc_unlock(ha);
5146 }
5147 }
5148 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5149 return rval;
5150}
5151
5152static pci_ers_result_t
5153qla4xxx_pci_slot_reset(struct pci_dev *pdev)
5154{
5155 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
5156 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5157 int rc;
5158
5159 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
5160 ha->host_no, __func__);
5161
5162 if (!is_aer_supported(ha))
5163 return PCI_ERS_RESULT_NONE;
5164
5165 /* Restore the saved state of PCIe device -
5166 * BAR registers, PCI Config space, PCIX, MSI,
5167 * IOV states
5168 */
5169 pci_restore_state(pdev);
5170
5171 /* pci_restore_state() clears the saved_state flag of the device
5172 * save restored state which resets saved_state flag
5173 */
5174 pci_save_state(pdev);
5175
5176 /* Initialize device or resume if in suspended state */
5177 rc = pci_enable_device(pdev);
5178 if (rc) {
25985edc 5179 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
2232be0d
LC		 5180 "device after reset\n", ha->host_no, __func__);
5181 goto exit_slot_reset;
5182 }
5183
7b3595df 5184 ha->isp_ops->disable_intrs(ha);
2232be0d
LC		 5185
5186 if (is_qla8022(ha)) {
5187 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
5188 ret = PCI_ERS_RESULT_RECOVERED;
5189 goto exit_slot_reset;
5190 } else
5191 goto exit_slot_reset;
5192 }
5193
5194exit_slot_reset:
5195 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
5196 "device after reset\n", ha->host_no, __func__, ret);
5197 return ret;
5198}
5199
5200static void
5201qla4xxx_pci_resume(struct pci_dev *pdev)
5202{
5203 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5204 int ret;
5205
5206 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
5207 ha->host_no, __func__);
5208
5209 ret = qla4xxx_wait_for_hba_online(ha);
5210 if (ret != QLA_SUCCESS) {
5211 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
5212 "resume I/O from slot/link_reset\n", ha->host_no,
5213 __func__);
5214 }
5215
5216 pci_cleanup_aer_uncorrect_error_status(pdev);
5217 clear_bit(AF_EEH_BUSY, &ha->flags);
5218}
5219
5220static struct pci_error_handlers qla4xxx_err_handler = {
5221 .error_detected = qla4xxx_pci_error_detected,
5222 .mmio_enabled = qla4xxx_pci_mmio_enabled,
5223 .slot_reset = qla4xxx_pci_slot_reset,
5224 .resume = qla4xxx_pci_resume,
5225};
5226
afaf5a2d
DS		 5227static struct pci_device_id qla4xxx_pci_tbl[] = {
5228 {
5229 .vendor = PCI_VENDOR_ID_QLOGIC,
5230 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
5231 .subvendor = PCI_ANY_ID,
5232 .subdevice = PCI_ANY_ID,
5233 },
5234 {
5235 .vendor = PCI_VENDOR_ID_QLOGIC,
5236 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
5237 .subvendor = PCI_ANY_ID,
5238 .subdevice = PCI_ANY_ID,
5239 },
d915058f
DS		 5240 {
5241 .vendor = PCI_VENDOR_ID_QLOGIC,
5242 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
5243 .subvendor = PCI_ANY_ID,
5244 .subdevice = PCI_ANY_ID,
5245 },
f4f5df23
VC		 5246 {
5247 .vendor = PCI_VENDOR_ID_QLOGIC,
5248 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
5249 .subvendor = PCI_ANY_ID,
5250 .subdevice = PCI_ANY_ID,
5251 },
afaf5a2d
DS		 5252 {0, 0},
5253};
5254MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
5255
47975477 5256static struct pci_driver qla4xxx_pci_driver = {
afaf5a2d
DS		 5257 .name = DRIVER_NAME,
5258 .id_table = qla4xxx_pci_tbl,
5259 .probe = qla4xxx_probe_adapter,
5260 .remove = qla4xxx_remove_adapter,
2232be0d 5261 .err_handler = &qla4xxx_err_handler,
afaf5a2d
DS		 5262};
5263
5264static int __init qla4xxx_module_init(void)
5265{
5266 int ret;
5267
5268 /* Allocate cache for SRBs. */
5269 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
20c2df83 5270 SLAB_HWCACHE_ALIGN, NULL);
afaf5a2d
DS		 5271 if (srb_cachep == NULL) {
5272 printk(KERN_ERR
5273 "%s: Unable to allocate SRB cache..."
5274 "Failing load!\n", DRIVER_NAME);
5275 ret = -ENOMEM;
5276 goto no_srp_cache;
5277 }
5278
5279 /* Derive version string. */
5280 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
11010fec 5281 if (ql4xextended_error_logging)
afaf5a2d
DS		 5282 strcat(qla4xxx_version_str, "-debug");
5283
5284 qla4xxx_scsi_transport =
5285 iscsi_register_transport(&qla4xxx_iscsi_transport);
5286 if (!qla4xxx_scsi_transport){
5287 ret = -ENODEV;
5288 goto release_srb_cache;
5289 }
5290
afaf5a2d
DS		 5291 ret = pci_register_driver(&qla4xxx_pci_driver);
5292 if (ret)
5293 goto unregister_transport;
5294
5295 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
5296 return 0;
5ae16db3 5297
afaf5a2d
DS		 5298unregister_transport:
5299 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
5300release_srb_cache:
5301 kmem_cache_destroy(srb_cachep);
5302no_srp_cache:
5303 return ret;
5304}
5305
5306static void __exit qla4xxx_module_exit(void)
5307{
5308 pci_unregister_driver(&qla4xxx_pci_driver);
5309 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
5310 kmem_cache_destroy(srb_cachep);
5311}
5312
5313module_init(qla4xxx_module_init);
5314module_exit(qla4xxx_module_exit);
5315
5316MODULE_AUTHOR("QLogic Corporation");
5317MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
5318MODULE_LICENSE("GPL");
5319MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
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