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Merge tag 'v3.3.7' into 3.3/master
[zen-stable.git] / drivers / scsi / qla4xxx / ql4_os.c
blobce6d3b7f0c616a3adc14677c27996e99711d4f75
1 /*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2010 QLogic Corporation
4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7 #include <linux/moduleparam.h>
8 #include <linux/slab.h>
9 #include <linux/blkdev.h>
10 #include <linux/iscsi_boot_sysfs.h>
11 #include <linux/inet.h>
12
13 #include <scsi/scsi_tcq.h>
14 #include <scsi/scsicam.h>
15
16 #include "ql4_def.h"
17 #include "ql4_version.h"
18 #include "ql4_glbl.h"
19 #include "ql4_dbg.h"
20 #include "ql4_inline.h"
21
22 /*
23 * Driver version
24 */
25 static char qla4xxx_version_str[40];
26
27 /*
28 * SRB allocation cache
29 */
30 static struct kmem_cache *srb_cachep;
31
32 /*
33 * Module parameter information and variables
34 */
35 int ql4xdisablesysfsboot = 1;
36 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
37 MODULE_PARM_DESC(ql4xdisablesysfsboot,
38 " Set to disable exporting boot targets to sysfs.\n"
39 "\t\t 0 - Export boot targets\n"
40 "\t\t 1 - Do not export boot targets (Default)");
41
42 int ql4xdontresethba = 0;
43 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
44 MODULE_PARM_DESC(ql4xdontresethba,
45 " Don't reset the HBA for driver recovery.\n"
46 "\t\t 0 - It will reset HBA (Default)\n"
47 "\t\t 1 - It will NOT reset HBA");
48
49 int ql4xextended_error_logging;
50 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
51 MODULE_PARM_DESC(ql4xextended_error_logging,
52 " Option to enable extended error logging.\n"
53 "\t\t 0 - no logging (Default)\n"
54 "\t\t 2 - debug logging");
55
56 int ql4xenablemsix = 1;
57 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
58 MODULE_PARM_DESC(ql4xenablemsix,
59 " Set to enable MSI or MSI-X interrupt mechanism.\n"
60 "\t\t 0 = enable INTx interrupt mechanism.\n"
61 "\t\t 1 = enable MSI-X interrupt mechanism (Default).\n"
62 "\t\t 2 = enable MSI interrupt mechanism.");
63
64 #define QL4_DEF_QDEPTH 32
65 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
66 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
67 MODULE_PARM_DESC(ql4xmaxqdepth,
68 " Maximum queue depth to report for target devices.\n"
69 "\t\t Default: 32.");
70
71 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
72 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
73 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
74 "Target Session Recovery Timeout.\n"
75 "\t\t Default: 120 sec.");
76
77 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
78 /*
79 * SCSI host template entry points
80 */
81 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
82
83 /*
84 * iSCSI template entry points
85 */
86 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
87 enum iscsi_param param, char *buf);
88 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
89 enum iscsi_host_param param, char *buf);
90 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
91 uint32_t len);
92 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
93 enum iscsi_param_type param_type,
94 int param, char *buf);
95 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
96 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
97 struct sockaddr *dst_addr,
98 int non_blocking);
99 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
100 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
101 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
102 enum iscsi_param param, char *buf);
103 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
104 static struct iscsi_cls_conn *
105 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
106 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
107 struct iscsi_cls_conn *cls_conn,
108 uint64_t transport_fd, int is_leading);
109 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
110 static struct iscsi_cls_session *
111 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
112 uint16_t qdepth, uint32_t initial_cmdsn);
113 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
114 static void qla4xxx_task_work(struct work_struct *wdata);
115 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
116 static int qla4xxx_task_xmit(struct iscsi_task *);
117 static void qla4xxx_task_cleanup(struct iscsi_task *);
118 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
119 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
120 struct iscsi_stats *stats);
121 /*
122 * SCSI host template entry points
123 */
124 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
125 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
126 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
127 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
128 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
129 static int qla4xxx_slave_alloc(struct scsi_device *device);
130 static int qla4xxx_slave_configure(struct scsi_device *device);
131 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
132 static umode_t ql4_attr_is_visible(int param_type, int param);
133 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
134
135 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
136 QLA82XX_LEGACY_INTR_CONFIG;
137
138 static struct scsi_host_template qla4xxx_driver_template = {
139 .module = THIS_MODULE,
140 .name = DRIVER_NAME,
141 .proc_name = DRIVER_NAME,
142 .queuecommand = qla4xxx_queuecommand,
143
144 .eh_abort_handler = qla4xxx_eh_abort,
145 .eh_device_reset_handler = qla4xxx_eh_device_reset,
146 .eh_target_reset_handler = qla4xxx_eh_target_reset,
147 .eh_host_reset_handler = qla4xxx_eh_host_reset,
148 .eh_timed_out = qla4xxx_eh_cmd_timed_out,
149
150 .slave_configure = qla4xxx_slave_configure,
151 .slave_alloc = qla4xxx_slave_alloc,
152 .slave_destroy = qla4xxx_slave_destroy,
153
154 .this_id = -1,
155 .cmd_per_lun = 3,
156 .use_clustering = ENABLE_CLUSTERING,
157 .sg_tablesize = SG_ALL,
158
159 .max_sectors = 0xFFFF,
160 .shost_attrs = qla4xxx_host_attrs,
161 .host_reset = qla4xxx_host_reset,
162 .vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
163 };
164
165 static struct iscsi_transport qla4xxx_iscsi_transport = {
166 .owner = THIS_MODULE,
167 .name = DRIVER_NAME,
168 .caps = CAP_TEXT_NEGO |
169 CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
170 CAP_DATADGST | CAP_LOGIN_OFFLOAD |
171 CAP_MULTI_R2T,
172 .attr_is_visible = ql4_attr_is_visible,
173 .create_session = qla4xxx_session_create,
174 .destroy_session = qla4xxx_session_destroy,
175 .start_conn = qla4xxx_conn_start,
176 .create_conn = qla4xxx_conn_create,
177 .bind_conn = qla4xxx_conn_bind,
178 .stop_conn = iscsi_conn_stop,
179 .destroy_conn = qla4xxx_conn_destroy,
180 .set_param = iscsi_set_param,
181 .get_conn_param = qla4xxx_conn_get_param,
182 .get_session_param = iscsi_session_get_param,
183 .get_ep_param = qla4xxx_get_ep_param,
184 .ep_connect = qla4xxx_ep_connect,
185 .ep_poll = qla4xxx_ep_poll,
186 .ep_disconnect = qla4xxx_ep_disconnect,
187 .get_stats = qla4xxx_conn_get_stats,
188 .send_pdu = iscsi_conn_send_pdu,
189 .xmit_task = qla4xxx_task_xmit,
190 .cleanup_task = qla4xxx_task_cleanup,
191 .alloc_pdu = qla4xxx_alloc_pdu,
192
193 .get_host_param = qla4xxx_host_get_param,
194 .set_iface_param = qla4xxx_iface_set_param,
195 .get_iface_param = qla4xxx_get_iface_param,
196 .bsg_request = qla4xxx_bsg_request,
197 };
198
199 static struct scsi_transport_template *qla4xxx_scsi_transport;
200
201 static umode_t ql4_attr_is_visible(int param_type, int param)
202 {
203 switch (param_type) {
204 case ISCSI_HOST_PARAM:
205 switch (param) {
206 case ISCSI_HOST_PARAM_HWADDRESS:
207 case ISCSI_HOST_PARAM_IPADDRESS:
208 case ISCSI_HOST_PARAM_INITIATOR_NAME:
209 return S_IRUGO;
210 default:
211 return 0;
212 }
213 case ISCSI_PARAM:
214 switch (param) {
215 case ISCSI_PARAM_PERSISTENT_ADDRESS:
216 case ISCSI_PARAM_PERSISTENT_PORT:
217 case ISCSI_PARAM_CONN_ADDRESS:
218 case ISCSI_PARAM_CONN_PORT:
219 case ISCSI_PARAM_TARGET_NAME:
220 case ISCSI_PARAM_TPGT:
221 case ISCSI_PARAM_TARGET_ALIAS:
222 case ISCSI_PARAM_MAX_BURST:
223 case ISCSI_PARAM_MAX_R2T:
224 case ISCSI_PARAM_FIRST_BURST:
225 case ISCSI_PARAM_MAX_RECV_DLENGTH:
226 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
227 case ISCSI_PARAM_IFACE_NAME:
228 return S_IRUGO;
229 default:
230 return 0;
231 }
232 case ISCSI_NET_PARAM:
233 switch (param) {
234 case ISCSI_NET_PARAM_IPV4_ADDR:
235 case ISCSI_NET_PARAM_IPV4_SUBNET:
236 case ISCSI_NET_PARAM_IPV4_GW:
237 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
238 case ISCSI_NET_PARAM_IFACE_ENABLE:
239 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
240 case ISCSI_NET_PARAM_IPV6_ADDR:
241 case ISCSI_NET_PARAM_IPV6_ROUTER:
242 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
243 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
244 case ISCSI_NET_PARAM_VLAN_ID:
245 case ISCSI_NET_PARAM_VLAN_PRIORITY:
246 case ISCSI_NET_PARAM_VLAN_ENABLED:
247 case ISCSI_NET_PARAM_MTU:
248 case ISCSI_NET_PARAM_PORT:
249 return S_IRUGO;
250 default:
251 return 0;
252 }
253 }
254
255 return 0;
256 }
257
258 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
259 enum iscsi_param_type param_type,
260 int param, char *buf)
261 {
262 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
263 struct scsi_qla_host *ha = to_qla_host(shost);
264 int len = -ENOSYS;
265
266 if (param_type != ISCSI_NET_PARAM)
267 return -ENOSYS;
268
269 switch (param) {
270 case ISCSI_NET_PARAM_IPV4_ADDR:
271 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
272 break;
273 case ISCSI_NET_PARAM_IPV4_SUBNET:
274 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
275 break;
276 case ISCSI_NET_PARAM_IPV4_GW:
277 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
278 break;
279 case ISCSI_NET_PARAM_IFACE_ENABLE:
280 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
281 len = sprintf(buf, "%s\n",
282 (ha->ip_config.ipv4_options &
283 IPOPT_IPV4_PROTOCOL_ENABLE) ?
284 "enabled" : "disabled");
285 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
286 len = sprintf(buf, "%s\n",
287 (ha->ip_config.ipv6_options &
288 IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
289 "enabled" : "disabled");
290 break;
291 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
292 len = sprintf(buf, "%s\n",
293 (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
294 "dhcp" : "static");
295 break;
296 case ISCSI_NET_PARAM_IPV6_ADDR:
297 if (iface->iface_num == 0)
298 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
299 if (iface->iface_num == 1)
300 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
301 break;
302 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
303 len = sprintf(buf, "%pI6\n",
304 &ha->ip_config.ipv6_link_local_addr);
305 break;
306 case ISCSI_NET_PARAM_IPV6_ROUTER:
307 len = sprintf(buf, "%pI6\n",
308 &ha->ip_config.ipv6_default_router_addr);
309 break;
310 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
311 len = sprintf(buf, "%s\n",
312 (ha->ip_config.ipv6_addl_options &
313 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
314 "nd" : "static");
315 break;
316 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
317 len = sprintf(buf, "%s\n",
318 (ha->ip_config.ipv6_addl_options &
319 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
320 "auto" : "static");
321 break;
322 case ISCSI_NET_PARAM_VLAN_ID:
323 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
324 len = sprintf(buf, "%d\n",
325 (ha->ip_config.ipv4_vlan_tag &
326 ISCSI_MAX_VLAN_ID));
327 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
328 len = sprintf(buf, "%d\n",
329 (ha->ip_config.ipv6_vlan_tag &
330 ISCSI_MAX_VLAN_ID));
331 break;
332 case ISCSI_NET_PARAM_VLAN_PRIORITY:
333 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
334 len = sprintf(buf, "%d\n",
335 ((ha->ip_config.ipv4_vlan_tag >> 13) &
336 ISCSI_MAX_VLAN_PRIORITY));
337 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
338 len = sprintf(buf, "%d\n",
339 ((ha->ip_config.ipv6_vlan_tag >> 13) &
340 ISCSI_MAX_VLAN_PRIORITY));
341 break;
342 case ISCSI_NET_PARAM_VLAN_ENABLED:
343 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
344 len = sprintf(buf, "%s\n",
345 (ha->ip_config.ipv4_options &
346 IPOPT_VLAN_TAGGING_ENABLE) ?
347 "enabled" : "disabled");
348 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
349 len = sprintf(buf, "%s\n",
350 (ha->ip_config.ipv6_options &
351 IPV6_OPT_VLAN_TAGGING_ENABLE) ?
352 "enabled" : "disabled");
353 break;
354 case ISCSI_NET_PARAM_MTU:
355 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
356 break;
357 case ISCSI_NET_PARAM_PORT:
358 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
359 len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
360 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
361 len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
362 break;
363 default:
364 len = -ENOSYS;
365 }
366
367 return len;
368 }
369
370 static struct iscsi_endpoint *
371 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
372 int non_blocking)
373 {
374 int ret;
375 struct iscsi_endpoint *ep;
376 struct qla_endpoint *qla_ep;
377 struct scsi_qla_host *ha;
378 struct sockaddr_in *addr;
379 struct sockaddr_in6 *addr6;
380
381 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
382 if (!shost) {
383 ret = -ENXIO;
384 printk(KERN_ERR "%s: shost is NULL\n",
385 __func__);
386 return ERR_PTR(ret);
387 }
388
389 ha = iscsi_host_priv(shost);
390
391 ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
392 if (!ep) {
393 ret = -ENOMEM;
394 return ERR_PTR(ret);
395 }
396
397 qla_ep = ep->dd_data;
398 memset(qla_ep, 0, sizeof(struct qla_endpoint));
399 if (dst_addr->sa_family == AF_INET) {
400 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
401 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
402 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
403 (char *)&addr->sin_addr));
404 } else if (dst_addr->sa_family == AF_INET6) {
405 memcpy(&qla_ep->dst_addr, dst_addr,
406 sizeof(struct sockaddr_in6));
407 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
408 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
409 (char *)&addr6->sin6_addr));
410 }
411
412 qla_ep->host = shost;
413
414 return ep;
415 }
416
417 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
418 {
419 struct qla_endpoint *qla_ep;
420 struct scsi_qla_host *ha;
421 int ret = 0;
422
423 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
424 qla_ep = ep->dd_data;
425 ha = to_qla_host(qla_ep->host);
426
427 if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
428 ret = 1;
429
430 return ret;
431 }
432
433 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
434 {
435 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
436 iscsi_destroy_endpoint(ep);
437 }
438
439 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
440 enum iscsi_param param,
441 char *buf)
442 {
443 struct qla_endpoint *qla_ep = ep->dd_data;
444 struct sockaddr *dst_addr;
445
446 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
447
448 switch (param) {
449 case ISCSI_PARAM_CONN_PORT:
450 case ISCSI_PARAM_CONN_ADDRESS:
451 if (!qla_ep)
452 return -ENOTCONN;
453
454 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
455 if (!dst_addr)
456 return -ENOTCONN;
457
458 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
459 &qla_ep->dst_addr, param, buf);
460 default:
461 return -ENOSYS;
462 }
463 }
464
465 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
466 struct iscsi_stats *stats)
467 {
468 struct iscsi_session *sess;
469 struct iscsi_cls_session *cls_sess;
470 struct ddb_entry *ddb_entry;
471 struct scsi_qla_host *ha;
472 struct ql_iscsi_stats *ql_iscsi_stats;
473 int stats_size;
474 int ret;
475 dma_addr_t iscsi_stats_dma;
476
477 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
478
479 cls_sess = iscsi_conn_to_session(cls_conn);
480 sess = cls_sess->dd_data;
481 ddb_entry = sess->dd_data;
482 ha = ddb_entry->ha;
483
484 stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
485 /* Allocate memory */
486 ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
487 &iscsi_stats_dma, GFP_KERNEL);
488 if (!ql_iscsi_stats) {
489 ql4_printk(KERN_ERR, ha,
490 "Unable to allocate memory for iscsi stats\n");
491 goto exit_get_stats;
492 }
493
494 ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
495 iscsi_stats_dma);
496 if (ret != QLA_SUCCESS) {
497 ql4_printk(KERN_ERR, ha,
498 "Unable to retreive iscsi stats\n");
499 goto free_stats;
500 }
501
502 /* octets */
503 stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
504 stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
505 /* xmit pdus */
506 stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
507 stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
508 stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
509 stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
510 stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
511 stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
512 stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
513 stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
514 /* recv pdus */
515 stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
516 stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
517 stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
518 stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
519 stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
520 stats->logoutrsp_pdus =
521 le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
522 stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
523 stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
524 stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
525
526 free_stats:
527 dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
528 iscsi_stats_dma);
529 exit_get_stats:
530 return;
531 }
532
533 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
534 {
535 struct iscsi_cls_session *session;
536 struct iscsi_session *sess;
537 unsigned long flags;
538 enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
539
540 session = starget_to_session(scsi_target(sc->device));
541 sess = session->dd_data;
542
543 spin_lock_irqsave(&session->lock, flags);
544 if (session->state == ISCSI_SESSION_FAILED)
545 ret = BLK_EH_RESET_TIMER;
546 spin_unlock_irqrestore(&session->lock, flags);
547
548 return ret;
549 }
550
551 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
552 enum iscsi_host_param param, char *buf)
553 {
554 struct scsi_qla_host *ha = to_qla_host(shost);
555 int len;
556
557 switch (param) {
558 case ISCSI_HOST_PARAM_HWADDRESS:
559 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
560 break;
561 case ISCSI_HOST_PARAM_IPADDRESS:
562 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
563 break;
564 case ISCSI_HOST_PARAM_INITIATOR_NAME:
565 len = sprintf(buf, "%s\n", ha->name_string);
566 break;
567 default:
568 return -ENOSYS;
569 }
570
571 return len;
572 }
573
574 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
575 {
576 if (ha->iface_ipv4)
577 return;
578
579 /* IPv4 */
580 ha->iface_ipv4 = iscsi_create_iface(ha->host,
581 &qla4xxx_iscsi_transport,
582 ISCSI_IFACE_TYPE_IPV4, 0, 0);
583 if (!ha->iface_ipv4)
584 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
585 "iface0.\n");
586 }
587
588 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
589 {
590 if (!ha->iface_ipv6_0)
591 /* IPv6 iface-0 */
592 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
593 &qla4xxx_iscsi_transport,
594 ISCSI_IFACE_TYPE_IPV6, 0,
595 0);
596 if (!ha->iface_ipv6_0)
597 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
598 "iface0.\n");
599
600 if (!ha->iface_ipv6_1)
601 /* IPv6 iface-1 */
602 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
603 &qla4xxx_iscsi_transport,
604 ISCSI_IFACE_TYPE_IPV6, 1,
605 0);
606 if (!ha->iface_ipv6_1)
607 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
608 "iface1.\n");
609 }
610
611 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
612 {
613 if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
614 qla4xxx_create_ipv4_iface(ha);
615
616 if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
617 qla4xxx_create_ipv6_iface(ha);
618 }
619
620 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
621 {
622 if (ha->iface_ipv4) {
623 iscsi_destroy_iface(ha->iface_ipv4);
624 ha->iface_ipv4 = NULL;
625 }
626 }
627
628 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
629 {
630 if (ha->iface_ipv6_0) {
631 iscsi_destroy_iface(ha->iface_ipv6_0);
632 ha->iface_ipv6_0 = NULL;
633 }
634 if (ha->iface_ipv6_1) {
635 iscsi_destroy_iface(ha->iface_ipv6_1);
636 ha->iface_ipv6_1 = NULL;
637 }
638 }
639
640 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
641 {
642 qla4xxx_destroy_ipv4_iface(ha);
643 qla4xxx_destroy_ipv6_iface(ha);
644 }
645
646 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
647 struct iscsi_iface_param_info *iface_param,
648 struct addr_ctrl_blk *init_fw_cb)
649 {
650 /*
651 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
652 * iface_num 1 is valid only for IPv6 Addr.
653 */
654 switch (iface_param->param) {
655 case ISCSI_NET_PARAM_IPV6_ADDR:
656 if (iface_param->iface_num & 0x1)
657 /* IPv6 Addr 1 */
658 memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
659 sizeof(init_fw_cb->ipv6_addr1));
660 else
661 /* IPv6 Addr 0 */
662 memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
663 sizeof(init_fw_cb->ipv6_addr0));
664 break;
665 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
666 if (iface_param->iface_num & 0x1)
667 break;
668 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
669 sizeof(init_fw_cb->ipv6_if_id));
670 break;
671 case ISCSI_NET_PARAM_IPV6_ROUTER:
672 if (iface_param->iface_num & 0x1)
673 break;
674 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
675 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
676 break;
677 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
678 /* Autocfg applies to even interface */
679 if (iface_param->iface_num & 0x1)
680 break;
681
682 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
683 init_fw_cb->ipv6_addtl_opts &=
684 cpu_to_le16(
685 ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
686 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
687 init_fw_cb->ipv6_addtl_opts |=
688 cpu_to_le16(
689 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
690 else
691 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
692 "IPv6 addr\n");
693 break;
694 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
695 /* Autocfg applies to even interface */
696 if (iface_param->iface_num & 0x1)
697 break;
698
699 if (iface_param->value[0] ==
700 ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
701 init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
702 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
703 else if (iface_param->value[0] ==
704 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
705 init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
706 ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
707 else
708 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
709 "IPv6 linklocal addr\n");
710 break;
711 case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
712 /* Autocfg applies to even interface */
713 if (iface_param->iface_num & 0x1)
714 break;
715
716 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
717 memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
718 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
719 break;
720 case ISCSI_NET_PARAM_IFACE_ENABLE:
721 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
722 init_fw_cb->ipv6_opts |=
723 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
724 qla4xxx_create_ipv6_iface(ha);
725 } else {
726 init_fw_cb->ipv6_opts &=
727 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
728 0xFFFF);
729 qla4xxx_destroy_ipv6_iface(ha);
730 }
731 break;
732 case ISCSI_NET_PARAM_VLAN_TAG:
733 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
734 break;
735 init_fw_cb->ipv6_vlan_tag =
736 cpu_to_be16(*(uint16_t *)iface_param->value);
737 break;
738 case ISCSI_NET_PARAM_VLAN_ENABLED:
739 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
740 init_fw_cb->ipv6_opts |=
741 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
742 else
743 init_fw_cb->ipv6_opts &=
744 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
745 break;
746 case ISCSI_NET_PARAM_MTU:
747 init_fw_cb->eth_mtu_size =
748 cpu_to_le16(*(uint16_t *)iface_param->value);
749 break;
750 case ISCSI_NET_PARAM_PORT:
751 /* Autocfg applies to even interface */
752 if (iface_param->iface_num & 0x1)
753 break;
754
755 init_fw_cb->ipv6_port =
756 cpu_to_le16(*(uint16_t *)iface_param->value);
757 break;
758 default:
759 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
760 iface_param->param);
761 break;
762 }
763 }
764
765 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
766 struct iscsi_iface_param_info *iface_param,
767 struct addr_ctrl_blk *init_fw_cb)
768 {
769 switch (iface_param->param) {
770 case ISCSI_NET_PARAM_IPV4_ADDR:
771 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
772 sizeof(init_fw_cb->ipv4_addr));
773 break;
774 case ISCSI_NET_PARAM_IPV4_SUBNET:
775 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
776 sizeof(init_fw_cb->ipv4_subnet));
777 break;
778 case ISCSI_NET_PARAM_IPV4_GW:
779 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
780 sizeof(init_fw_cb->ipv4_gw_addr));
781 break;
782 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
783 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
784 init_fw_cb->ipv4_tcp_opts |=
785 cpu_to_le16(TCPOPT_DHCP_ENABLE);
786 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
787 init_fw_cb->ipv4_tcp_opts &=
788 cpu_to_le16(~TCPOPT_DHCP_ENABLE);
789 else
790 ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
791 break;
792 case ISCSI_NET_PARAM_IFACE_ENABLE:
793 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
794 init_fw_cb->ipv4_ip_opts |=
795 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
796 qla4xxx_create_ipv4_iface(ha);
797 } else {
798 init_fw_cb->ipv4_ip_opts &=
799 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
800 0xFFFF);
801 qla4xxx_destroy_ipv4_iface(ha);
802 }
803 break;
804 case ISCSI_NET_PARAM_VLAN_TAG:
805 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
806 break;
807 init_fw_cb->ipv4_vlan_tag =
808 cpu_to_be16(*(uint16_t *)iface_param->value);
809 break;
810 case ISCSI_NET_PARAM_VLAN_ENABLED:
811 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
812 init_fw_cb->ipv4_ip_opts |=
813 cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
814 else
815 init_fw_cb->ipv4_ip_opts &=
816 cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
817 break;
818 case ISCSI_NET_PARAM_MTU:
819 init_fw_cb->eth_mtu_size =
820 cpu_to_le16(*(uint16_t *)iface_param->value);
821 break;
822 case ISCSI_NET_PARAM_PORT:
823 init_fw_cb->ipv4_port =
824 cpu_to_le16(*(uint16_t *)iface_param->value);
825 break;
826 default:
827 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
828 iface_param->param);
829 break;
830 }
831 }
832
833 static void
834 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
835 {
836 struct addr_ctrl_blk_def *acb;
837 acb = (struct addr_ctrl_blk_def *)init_fw_cb;
838 memset(acb->reserved1, 0, sizeof(acb->reserved1));
839 memset(acb->reserved2, 0, sizeof(acb->reserved2));
840 memset(acb->reserved3, 0, sizeof(acb->reserved3));
841 memset(acb->reserved4, 0, sizeof(acb->reserved4));
842 memset(acb->reserved5, 0, sizeof(acb->reserved5));
843 memset(acb->reserved6, 0, sizeof(acb->reserved6));
844 memset(acb->reserved7, 0, sizeof(acb->reserved7));
845 memset(acb->reserved8, 0, sizeof(acb->reserved8));
846 memset(acb->reserved9, 0, sizeof(acb->reserved9));
847 memset(acb->reserved10, 0, sizeof(acb->reserved10));
848 memset(acb->reserved11, 0, sizeof(acb->reserved11));
849 memset(acb->reserved12, 0, sizeof(acb->reserved12));
850 memset(acb->reserved13, 0, sizeof(acb->reserved13));
851 memset(acb->reserved14, 0, sizeof(acb->reserved14));
852 memset(acb->reserved15, 0, sizeof(acb->reserved15));
853 }
854
855 static int
856 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
857 {
858 struct scsi_qla_host *ha = to_qla_host(shost);
859 int rval = 0;
860 struct iscsi_iface_param_info *iface_param = NULL;
861 struct addr_ctrl_blk *init_fw_cb = NULL;
862 dma_addr_t init_fw_cb_dma;
863 uint32_t mbox_cmd[MBOX_REG_COUNT];
864 uint32_t mbox_sts[MBOX_REG_COUNT];
865 uint32_t rem = len;
866 struct nlattr *attr;
867
868 init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
869 sizeof(struct addr_ctrl_blk),
870 &init_fw_cb_dma, GFP_KERNEL);
871 if (!init_fw_cb) {
872 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
873 __func__);
874 return -ENOMEM;
875 }
876
877 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
878 memset(&mbox_cmd, 0, sizeof(mbox_cmd));
879 memset(&mbox_sts, 0, sizeof(mbox_sts));
880
881 if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
882 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
883 rval = -EIO;
884 goto exit_init_fw_cb;
885 }
886
887 nla_for_each_attr(attr, data, len, rem) {
888 iface_param = nla_data(attr);
889
890 if (iface_param->param_type != ISCSI_NET_PARAM)
891 continue;
892
893 switch (iface_param->iface_type) {
894 case ISCSI_IFACE_TYPE_IPV4:
895 switch (iface_param->iface_num) {
896 case 0:
897 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
898 break;
899 default:
900 /* Cannot have more than one IPv4 interface */
901 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
902 "number = %d\n",
903 iface_param->iface_num);
904 break;
905 }
906 break;
907 case ISCSI_IFACE_TYPE_IPV6:
908 switch (iface_param->iface_num) {
909 case 0:
910 case 1:
911 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
912 break;
913 default:
914 /* Cannot have more than two IPv6 interface */
915 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
916 "number = %d\n",
917 iface_param->iface_num);
918 break;
919 }
920 break;
921 default:
922 ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
923 break;
924 }
925 }
926
927 init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
928
929 rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
930 sizeof(struct addr_ctrl_blk),
931 FLASH_OPT_RMW_COMMIT);
932 if (rval != QLA_SUCCESS) {
933 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
934 __func__);
935 rval = -EIO;
936 goto exit_init_fw_cb;
937 }
938
939 rval = qla4xxx_disable_acb(ha);
940 if (rval != QLA_SUCCESS) {
941 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
942 __func__);
943 rval = -EIO;
944 goto exit_init_fw_cb;
945 }
946
947 wait_for_completion_timeout(&ha->disable_acb_comp,
948 DISABLE_ACB_TOV * HZ);
949
950 qla4xxx_initcb_to_acb(init_fw_cb);
951
952 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
953 if (rval != QLA_SUCCESS) {
954 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
955 __func__);
956 rval = -EIO;
957 goto exit_init_fw_cb;
958 }
959
960 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
961 qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
962 init_fw_cb_dma);
963
964 exit_init_fw_cb:
965 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
966 init_fw_cb, init_fw_cb_dma);
967
968 return rval;
969 }
970
971 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
972 enum iscsi_param param, char *buf)
973 {
974 struct iscsi_conn *conn;
975 struct qla_conn *qla_conn;
976 struct sockaddr *dst_addr;
977 int len = 0;
978
979 conn = cls_conn->dd_data;
980 qla_conn = conn->dd_data;
981 dst_addr = &qla_conn->qla_ep->dst_addr;
982
983 switch (param) {
984 case ISCSI_PARAM_CONN_PORT:
985 case ISCSI_PARAM_CONN_ADDRESS:
986 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
987 dst_addr, param, buf);
988 default:
989 return iscsi_conn_get_param(cls_conn, param, buf);
990 }
991
992 return len;
993
994 }
995
996 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
997 {
998 uint32_t mbx_sts = 0;
999 uint16_t tmp_ddb_index;
1000 int ret;
1001
1002 get_ddb_index:
1003 tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1004
1005 if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1006 DEBUG2(ql4_printk(KERN_INFO, ha,
1007 "Free DDB index not available\n"));
1008 ret = QLA_ERROR;
1009 goto exit_get_ddb_index;
1010 }
1011
1012 if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1013 goto get_ddb_index;
1014
1015 DEBUG2(ql4_printk(KERN_INFO, ha,
1016 "Found a free DDB index at %d\n", tmp_ddb_index));
1017 ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1018 if (ret == QLA_ERROR) {
1019 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1020 ql4_printk(KERN_INFO, ha,
1021 "DDB index = %d not available trying next\n",
1022 tmp_ddb_index);
1023 goto get_ddb_index;
1024 }
1025 DEBUG2(ql4_printk(KERN_INFO, ha,
1026 "Free FW DDB not available\n"));
1027 }
1028
1029 *ddb_index = tmp_ddb_index;
1030
1031 exit_get_ddb_index:
1032 return ret;
1033 }
1034
1035 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1036 struct ddb_entry *ddb_entry,
1037 char *existing_ipaddr,
1038 char *user_ipaddr)
1039 {
1040 uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1041 char formatted_ipaddr[DDB_IPADDR_LEN];
1042 int status = QLA_SUCCESS, ret = 0;
1043
1044 if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1045 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1046 '\0', NULL);
1047 if (ret == 0) {
1048 status = QLA_ERROR;
1049 goto out_match;
1050 }
1051 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1052 } else {
1053 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1054 '\0', NULL);
1055 if (ret == 0) {
1056 status = QLA_ERROR;
1057 goto out_match;
1058 }
1059 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1060 }
1061
1062 if (strcmp(existing_ipaddr, formatted_ipaddr))
1063 status = QLA_ERROR;
1064
1065 out_match:
1066 return status;
1067 }
1068
1069 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1070 struct iscsi_cls_conn *cls_conn)
1071 {
1072 int idx = 0, max_ddbs, rval;
1073 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1074 struct iscsi_session *sess, *existing_sess;
1075 struct iscsi_conn *conn, *existing_conn;
1076 struct ddb_entry *ddb_entry;
1077
1078 sess = cls_sess->dd_data;
1079 conn = cls_conn->dd_data;
1080
1081 if (sess->targetname == NULL ||
1082 conn->persistent_address == NULL ||
1083 conn->persistent_port == 0)
1084 return QLA_ERROR;
1085
1086 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1087 MAX_DEV_DB_ENTRIES;
1088
1089 for (idx = 0; idx < max_ddbs; idx++) {
1090 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1091 if (ddb_entry == NULL)
1092 continue;
1093
1094 if (ddb_entry->ddb_type != FLASH_DDB)
1095 continue;
1096
1097 existing_sess = ddb_entry->sess->dd_data;
1098 existing_conn = ddb_entry->conn->dd_data;
1099
1100 if (existing_sess->targetname == NULL ||
1101 existing_conn->persistent_address == NULL ||
1102 existing_conn->persistent_port == 0)
1103 continue;
1104
1105 DEBUG2(ql4_printk(KERN_INFO, ha,
1106 "IQN = %s User IQN = %s\n",
1107 existing_sess->targetname,
1108 sess->targetname));
1109
1110 DEBUG2(ql4_printk(KERN_INFO, ha,
1111 "IP = %s User IP = %s\n",
1112 existing_conn->persistent_address,
1113 conn->persistent_address));
1114
1115 DEBUG2(ql4_printk(KERN_INFO, ha,
1116 "Port = %d User Port = %d\n",
1117 existing_conn->persistent_port,
1118 conn->persistent_port));
1119
1120 if (strcmp(existing_sess->targetname, sess->targetname))
1121 continue;
1122 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1123 existing_conn->persistent_address,
1124 conn->persistent_address);
1125 if (rval == QLA_ERROR)
1126 continue;
1127 if (existing_conn->persistent_port != conn->persistent_port)
1128 continue;
1129 break;
1130 }
1131
1132 if (idx == max_ddbs)
1133 return QLA_ERROR;
1134
1135 DEBUG2(ql4_printk(KERN_INFO, ha,
1136 "Match found in fwdb sessions\n"));
1137 return QLA_SUCCESS;
1138 }
1139
1140 static struct iscsi_cls_session *
1141 qla4xxx_session_create(struct iscsi_endpoint *ep,
1142 uint16_t cmds_max, uint16_t qdepth,
1143 uint32_t initial_cmdsn)
1144 {
1145 struct iscsi_cls_session *cls_sess;
1146 struct scsi_qla_host *ha;
1147 struct qla_endpoint *qla_ep;
1148 struct ddb_entry *ddb_entry;
1149 uint16_t ddb_index;
1150 struct iscsi_session *sess;
1151 struct sockaddr *dst_addr;
1152 int ret;
1153
1154 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1155 if (!ep) {
1156 printk(KERN_ERR "qla4xxx: missing ep.\n");
1157 return NULL;
1158 }
1159
1160 qla_ep = ep->dd_data;
1161 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1162 ha = to_qla_host(qla_ep->host);
1163
1164 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1165 if (ret == QLA_ERROR)
1166 return NULL;
1167
1168 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1169 cmds_max, sizeof(struct ddb_entry),
1170 sizeof(struct ql4_task_data),
1171 initial_cmdsn, ddb_index);
1172 if (!cls_sess)
1173 return NULL;
1174
1175 sess = cls_sess->dd_data;
1176 ddb_entry = sess->dd_data;
1177 ddb_entry->fw_ddb_index = ddb_index;
1178 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1179 ddb_entry->ha = ha;
1180 ddb_entry->sess = cls_sess;
1181 ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1182 ddb_entry->ddb_change = qla4xxx_ddb_change;
1183 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1184 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1185 ha->tot_ddbs++;
1186
1187 return cls_sess;
1188 }
1189
1190 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1191 {
1192 struct iscsi_session *sess;
1193 struct ddb_entry *ddb_entry;
1194 struct scsi_qla_host *ha;
1195 unsigned long flags;
1196
1197 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1198 sess = cls_sess->dd_data;
1199 ddb_entry = sess->dd_data;
1200 ha = ddb_entry->ha;
1201
1202 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1203
1204 spin_lock_irqsave(&ha->hardware_lock, flags);
1205 qla4xxx_free_ddb(ha, ddb_entry);
1206 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1207 iscsi_session_teardown(cls_sess);
1208 }
1209
1210 static struct iscsi_cls_conn *
1211 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1212 {
1213 struct iscsi_cls_conn *cls_conn;
1214 struct iscsi_session *sess;
1215 struct ddb_entry *ddb_entry;
1216
1217 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1218 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1219 conn_idx);
1220 if (!cls_conn)
1221 return NULL;
1222
1223 sess = cls_sess->dd_data;
1224 ddb_entry = sess->dd_data;
1225 ddb_entry->conn = cls_conn;
1226
1227 return cls_conn;
1228 }
1229
1230 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1231 struct iscsi_cls_conn *cls_conn,
1232 uint64_t transport_fd, int is_leading)
1233 {
1234 struct iscsi_conn *conn;
1235 struct qla_conn *qla_conn;
1236 struct iscsi_endpoint *ep;
1237
1238 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1239
1240 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1241 return -EINVAL;
1242 ep = iscsi_lookup_endpoint(transport_fd);
1243 conn = cls_conn->dd_data;
1244 qla_conn = conn->dd_data;
1245 qla_conn->qla_ep = ep->dd_data;
1246 return 0;
1247 }
1248
1249 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1250 {
1251 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1252 struct iscsi_session *sess;
1253 struct ddb_entry *ddb_entry;
1254 struct scsi_qla_host *ha;
1255 struct dev_db_entry *fw_ddb_entry = NULL;
1256 dma_addr_t fw_ddb_entry_dma;
1257 uint32_t mbx_sts = 0;
1258 int ret = 0;
1259 int status = QLA_SUCCESS;
1260
1261 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1262 sess = cls_sess->dd_data;
1263 ddb_entry = sess->dd_data;
1264 ha = ddb_entry->ha;
1265
1266 /* Check if we have matching FW DDB, if yes then do not
1267 * login to this target. This could cause target to logout previous
1268 * connection
1269 */
1270 ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1271 if (ret == QLA_SUCCESS) {
1272 ql4_printk(KERN_INFO, ha,
1273 "Session already exist in FW.\n");
1274 ret = -EEXIST;
1275 goto exit_conn_start;
1276 }
1277
1278 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1279 &fw_ddb_entry_dma, GFP_KERNEL);
1280 if (!fw_ddb_entry) {
1281 ql4_printk(KERN_ERR, ha,
1282 "%s: Unable to allocate dma buffer\n", __func__);
1283 ret = -ENOMEM;
1284 goto exit_conn_start;
1285 }
1286
1287 ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1288 if (ret) {
1289 /* If iscsid is stopped and started then no need to do
1290 * set param again since ddb state will be already
1291 * active and FW does not allow set ddb to an
1292 * active session.
1293 */
1294 if (mbx_sts)
1295 if (ddb_entry->fw_ddb_device_state ==
1296 DDB_DS_SESSION_ACTIVE) {
1297 ddb_entry->unblock_sess(ddb_entry->sess);
1298 goto exit_set_param;
1299 }
1300
1301 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1302 __func__, ddb_entry->fw_ddb_index);
1303 goto exit_conn_start;
1304 }
1305
1306 status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1307 if (status == QLA_ERROR) {
1308 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1309 sess->targetname);
1310 ret = -EINVAL;
1311 goto exit_conn_start;
1312 }
1313
1314 if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1315 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1316
1317 DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1318 ddb_entry->fw_ddb_device_state));
1319
1320 exit_set_param:
1321 ret = 0;
1322
1323 exit_conn_start:
1324 if (fw_ddb_entry)
1325 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1326 fw_ddb_entry, fw_ddb_entry_dma);
1327 return ret;
1328 }
1329
1330 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1331 {
1332 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1333 struct iscsi_session *sess;
1334 struct scsi_qla_host *ha;
1335 struct ddb_entry *ddb_entry;
1336 int options;
1337
1338 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1339 sess = cls_sess->dd_data;
1340 ddb_entry = sess->dd_data;
1341 ha = ddb_entry->ha;
1342
1343 options = LOGOUT_OPTION_CLOSE_SESSION;
1344 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1345 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1346 }
1347
1348 static void qla4xxx_task_work(struct work_struct *wdata)
1349 {
1350 struct ql4_task_data *task_data;
1351 struct scsi_qla_host *ha;
1352 struct passthru_status *sts;
1353 struct iscsi_task *task;
1354 struct iscsi_hdr *hdr;
1355 uint8_t *data;
1356 uint32_t data_len;
1357 struct iscsi_conn *conn;
1358 int hdr_len;
1359 itt_t itt;
1360
1361 task_data = container_of(wdata, struct ql4_task_data, task_work);
1362 ha = task_data->ha;
1363 task = task_data->task;
1364 sts = &task_data->sts;
1365 hdr_len = sizeof(struct iscsi_hdr);
1366
1367 DEBUG3(printk(KERN_INFO "Status returned\n"));
1368 DEBUG3(qla4xxx_dump_buffer(sts, 64));
1369 DEBUG3(printk(KERN_INFO "Response buffer"));
1370 DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1371
1372 conn = task->conn;
1373
1374 switch (sts->completionStatus) {
1375 case PASSTHRU_STATUS_COMPLETE:
1376 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1377 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1378 itt = sts->handle;
1379 hdr->itt = itt;
1380 data = task_data->resp_buffer + hdr_len;
1381 data_len = task_data->resp_len - hdr_len;
1382 iscsi_complete_pdu(conn, hdr, data, data_len);
1383 break;
1384 default:
1385 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1386 sts->completionStatus);
1387 break;
1388 }
1389 return;
1390 }
1391
1392 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1393 {
1394 struct ql4_task_data *task_data;
1395 struct iscsi_session *sess;
1396 struct ddb_entry *ddb_entry;
1397 struct scsi_qla_host *ha;
1398 int hdr_len;
1399
1400 sess = task->conn->session;
1401 ddb_entry = sess->dd_data;
1402 ha = ddb_entry->ha;
1403 task_data = task->dd_data;
1404 memset(task_data, 0, sizeof(struct ql4_task_data));
1405
1406 if (task->sc) {
1407 ql4_printk(KERN_INFO, ha,
1408 "%s: SCSI Commands not implemented\n", __func__);
1409 return -EINVAL;
1410 }
1411
1412 hdr_len = sizeof(struct iscsi_hdr);
1413 task_data->ha = ha;
1414 task_data->task = task;
1415
1416 if (task->data_count) {
1417 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1418 task->data_count,
1419 PCI_DMA_TODEVICE);
1420 }
1421
1422 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1423 __func__, task->conn->max_recv_dlength, hdr_len));
1424
1425 task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1426 task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1427 task_data->resp_len,
1428 &task_data->resp_dma,
1429 GFP_ATOMIC);
1430 if (!task_data->resp_buffer)
1431 goto exit_alloc_pdu;
1432
1433 task_data->req_len = task->data_count + hdr_len;
1434 task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1435 task_data->req_len,
1436 &task_data->req_dma,
1437 GFP_ATOMIC);
1438 if (!task_data->req_buffer)
1439 goto exit_alloc_pdu;
1440
1441 task->hdr = task_data->req_buffer;
1442
1443 INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1444
1445 return 0;
1446
1447 exit_alloc_pdu:
1448 if (task_data->resp_buffer)
1449 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1450 task_data->resp_buffer, task_data->resp_dma);
1451
1452 if (task_data->req_buffer)
1453 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1454 task_data->req_buffer, task_data->req_dma);
1455 return -ENOMEM;
1456 }
1457
1458 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1459 {
1460 struct ql4_task_data *task_data;
1461 struct iscsi_session *sess;
1462 struct ddb_entry *ddb_entry;
1463 struct scsi_qla_host *ha;
1464 int hdr_len;
1465
1466 hdr_len = sizeof(struct iscsi_hdr);
1467 sess = task->conn->session;
1468 ddb_entry = sess->dd_data;
1469 ha = ddb_entry->ha;
1470 task_data = task->dd_data;
1471
1472 if (task->data_count) {
1473 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1474 task->data_count, PCI_DMA_TODEVICE);
1475 }
1476
1477 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1478 __func__, task->conn->max_recv_dlength, hdr_len));
1479
1480 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1481 task_data->resp_buffer, task_data->resp_dma);
1482 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1483 task_data->req_buffer, task_data->req_dma);
1484 return;
1485 }
1486
1487 static int qla4xxx_task_xmit(struct iscsi_task *task)
1488 {
1489 struct scsi_cmnd *sc = task->sc;
1490 struct iscsi_session *sess = task->conn->session;
1491 struct ddb_entry *ddb_entry = sess->dd_data;
1492 struct scsi_qla_host *ha = ddb_entry->ha;
1493
1494 if (!sc)
1495 return qla4xxx_send_passthru0(task);
1496
1497 ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1498 __func__);
1499 return -ENOSYS;
1500 }
1501
1502 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1503 struct dev_db_entry *fw_ddb_entry,
1504 struct iscsi_cls_session *cls_sess,
1505 struct iscsi_cls_conn *cls_conn)
1506 {
1507 int buflen = 0;
1508 struct iscsi_session *sess;
1509 struct iscsi_conn *conn;
1510 char ip_addr[DDB_IPADDR_LEN];
1511 uint16_t options = 0;
1512
1513 sess = cls_sess->dd_data;
1514 conn = cls_conn->dd_data;
1515
1516 conn->max_recv_dlength = BYTE_UNITS *
1517 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1518
1519 conn->max_xmit_dlength = BYTE_UNITS *
1520 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1521
1522 sess->initial_r2t_en =
1523 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1524
1525 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1526
1527 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1528
1529 sess->first_burst = BYTE_UNITS *
1530 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1531
1532 sess->max_burst = BYTE_UNITS *
1533 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1534
1535 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1536
1537 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1538
1539 conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1540
1541 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1542
1543 options = le16_to_cpu(fw_ddb_entry->options);
1544 if (options & DDB_OPT_IPV6_DEVICE)
1545 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1546 else
1547 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1548
1549 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1550 (char *)fw_ddb_entry->iscsi_name, buflen);
1551 iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1552 (char *)ha->name_string, buflen);
1553 iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1554 (char *)ip_addr, buflen);
1555 }
1556
1557 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1558 struct ddb_entry *ddb_entry)
1559 {
1560 struct iscsi_cls_session *cls_sess;
1561 struct iscsi_cls_conn *cls_conn;
1562 uint32_t ddb_state;
1563 dma_addr_t fw_ddb_entry_dma;
1564 struct dev_db_entry *fw_ddb_entry;
1565
1566 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1567 &fw_ddb_entry_dma, GFP_KERNEL);
1568 if (!fw_ddb_entry) {
1569 ql4_printk(KERN_ERR, ha,
1570 "%s: Unable to allocate dma buffer\n", __func__);
1571 goto exit_session_conn_fwddb_param;
1572 }
1573
1574 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
1575 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
1576 NULL, NULL, NULL) == QLA_ERROR) {
1577 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1578 "get_ddb_entry for fw_ddb_index %d\n",
1579 ha->host_no, __func__,
1580 ddb_entry->fw_ddb_index));
1581 goto exit_session_conn_fwddb_param;
1582 }
1583
1584 cls_sess = ddb_entry->sess;
1585
1586 cls_conn = ddb_entry->conn;
1587
1588 /* Update params */
1589 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
1590
1591 exit_session_conn_fwddb_param:
1592 if (fw_ddb_entry)
1593 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1594 fw_ddb_entry, fw_ddb_entry_dma);
1595 }
1596
1597 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
1598 struct ddb_entry *ddb_entry)
1599 {
1600 struct iscsi_cls_session *cls_sess;
1601 struct iscsi_cls_conn *cls_conn;
1602 struct iscsi_session *sess;
1603 struct iscsi_conn *conn;
1604 uint32_t ddb_state;
1605 dma_addr_t fw_ddb_entry_dma;
1606 struct dev_db_entry *fw_ddb_entry;
1607
1608 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1609 &fw_ddb_entry_dma, GFP_KERNEL);
1610 if (!fw_ddb_entry) {
1611 ql4_printk(KERN_ERR, ha,
1612 "%s: Unable to allocate dma buffer\n", __func__);
1613 goto exit_session_conn_param;
1614 }
1615
1616 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
1617 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
1618 NULL, NULL, NULL) == QLA_ERROR) {
1619 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1620 "get_ddb_entry for fw_ddb_index %d\n",
1621 ha->host_no, __func__,
1622 ddb_entry->fw_ddb_index));
1623 goto exit_session_conn_param;
1624 }
1625
1626 cls_sess = ddb_entry->sess;
1627 sess = cls_sess->dd_data;
1628
1629 cls_conn = ddb_entry->conn;
1630 conn = cls_conn->dd_data;
1631
1632 /* Update timers after login */
1633 ddb_entry->default_relogin_timeout =
1634 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
1635 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
1636 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
1637 ddb_entry->default_time2wait =
1638 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1639
1640 /* Update params */
1641 conn->max_recv_dlength = BYTE_UNITS *
1642 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1643
1644 conn->max_xmit_dlength = BYTE_UNITS *
1645 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1646
1647 sess->initial_r2t_en =
1648 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1649
1650 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1651
1652 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1653
1654 sess->first_burst = BYTE_UNITS *
1655 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1656
1657 sess->max_burst = BYTE_UNITS *
1658 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1659
1660 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1661
1662 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1663
1664 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1665
1666 memcpy(sess->initiatorname, ha->name_string,
1667 min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
1668
1669 exit_session_conn_param:
1670 if (fw_ddb_entry)
1671 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1672 fw_ddb_entry, fw_ddb_entry_dma);
1673 }
1674
1675 /*
1676 * Timer routines
1677 */
1678
1679 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
1680 unsigned long interval)
1681 {
1682 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
1683 __func__, ha->host->host_no));
1684 init_timer(&ha->timer);
1685 ha->timer.expires = jiffies + interval * HZ;
1686 ha->timer.data = (unsigned long)ha;
1687 ha->timer.function = (void (*)(unsigned long))func;
1688 add_timer(&ha->timer);
1689 ha->timer_active = 1;
1690 }
1691
1692 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
1693 {
1694 del_timer_sync(&ha->timer);
1695 ha->timer_active = 0;
1696 }
1697
1698 /***
1699 * qla4xxx_mark_device_missing - blocks the session
1700 * @cls_session: Pointer to the session to be blocked
1701 * @ddb_entry: Pointer to device database entry
1702 *
1703 * This routine marks a device missing and close connection.
1704 **/
1705 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
1706 {
1707 iscsi_block_session(cls_session);
1708 }
1709
1710 /**
1711 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
1712 * @ha: Pointer to host adapter structure.
1713 *
1714 * This routine marks a device missing and resets the relogin retry count.
1715 **/
1716 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
1717 {
1718 iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
1719 }
1720
1721 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
1722 struct ddb_entry *ddb_entry,
1723 struct scsi_cmnd *cmd)
1724 {
1725 struct srb *srb;
1726
1727 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
1728 if (!srb)
1729 return srb;
1730
1731 kref_init(&srb->srb_ref);
1732 srb->ha = ha;
1733 srb->ddb = ddb_entry;
1734 srb->cmd = cmd;
1735 srb->flags = 0;
1736 CMD_SP(cmd) = (void *)srb;
1737
1738 return srb;
1739 }
1740
1741 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
1742 {
1743 struct scsi_cmnd *cmd = srb->cmd;
1744
1745 if (srb->flags & SRB_DMA_VALID) {
1746 scsi_dma_unmap(cmd);
1747 srb->flags &= ~SRB_DMA_VALID;
1748 }
1749 CMD_SP(cmd) = NULL;
1750 }
1751
1752 void qla4xxx_srb_compl(struct kref *ref)
1753 {
1754 struct srb *srb = container_of(ref, struct srb, srb_ref);
1755 struct scsi_cmnd *cmd = srb->cmd;
1756 struct scsi_qla_host *ha = srb->ha;
1757
1758 qla4xxx_srb_free_dma(ha, srb);
1759
1760 mempool_free(srb, ha->srb_mempool);
1761
1762 cmd->scsi_done(cmd);
1763 }
1764
1765 /**
1766 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
1767 * @host: scsi host
1768 * @cmd: Pointer to Linux's SCSI command structure
1769 *
1770 * Remarks:
1771 * This routine is invoked by Linux to send a SCSI command to the driver.
1772 * The mid-level driver tries to ensure that queuecommand never gets
1773 * invoked concurrently with itself or the interrupt handler (although
1774 * the interrupt handler may call this routine as part of request-
1775 * completion handling). Unfortunely, it sometimes calls the scheduler
1776 * in interrupt context which is a big NO! NO!.
1777 **/
1778 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
1779 {
1780 struct scsi_qla_host *ha = to_qla_host(host);
1781 struct ddb_entry *ddb_entry = cmd->device->hostdata;
1782 struct iscsi_cls_session *sess = ddb_entry->sess;
1783 struct srb *srb;
1784 int rval;
1785
1786 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
1787 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
1788 cmd->result = DID_NO_CONNECT << 16;
1789 else
1790 cmd->result = DID_REQUEUE << 16;
1791 goto qc_fail_command;
1792 }
1793
1794 if (!sess) {
1795 cmd->result = DID_IMM_RETRY << 16;
1796 goto qc_fail_command;
1797 }
1798
1799 rval = iscsi_session_chkready(sess);
1800 if (rval) {
1801 cmd->result = rval;
1802 goto qc_fail_command;
1803 }
1804
1805 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
1806 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
1807 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
1808 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
1809 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
1810 !test_bit(AF_ONLINE, &ha->flags) ||
1811 !test_bit(AF_LINK_UP, &ha->flags) ||
1812 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
1813 goto qc_host_busy;
1814
1815 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
1816 if (!srb)
1817 goto qc_host_busy;
1818
1819 rval = qla4xxx_send_command_to_isp(ha, srb);
1820 if (rval != QLA_SUCCESS)
1821 goto qc_host_busy_free_sp;
1822
1823 return 0;
1824
1825 qc_host_busy_free_sp:
1826 qla4xxx_srb_free_dma(ha, srb);
1827 mempool_free(srb, ha->srb_mempool);
1828
1829 qc_host_busy:
1830 return SCSI_MLQUEUE_HOST_BUSY;
1831
1832 qc_fail_command:
1833 cmd->scsi_done(cmd);
1834
1835 return 0;
1836 }
1837
1838 /**
1839 * qla4xxx_mem_free - frees memory allocated to adapter
1840 * @ha: Pointer to host adapter structure.
1841 *
1842 * Frees memory previously allocated by qla4xxx_mem_alloc
1843 **/
1844 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
1845 {
1846 if (ha->queues)
1847 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
1848 ha->queues_dma);
1849
1850 ha->queues_len = 0;
1851 ha->queues = NULL;
1852 ha->queues_dma = 0;
1853 ha->request_ring = NULL;
1854 ha->request_dma = 0;
1855 ha->response_ring = NULL;
1856 ha->response_dma = 0;
1857 ha->shadow_regs = NULL;
1858 ha->shadow_regs_dma = 0;
1859
1860 /* Free srb pool. */
1861 if (ha->srb_mempool)
1862 mempool_destroy(ha->srb_mempool);
1863
1864 ha->srb_mempool = NULL;
1865
1866 if (ha->chap_dma_pool)
1867 dma_pool_destroy(ha->chap_dma_pool);
1868
1869 if (ha->chap_list)
1870 vfree(ha->chap_list);
1871 ha->chap_list = NULL;
1872
1873 if (ha->fw_ddb_dma_pool)
1874 dma_pool_destroy(ha->fw_ddb_dma_pool);
1875
1876 /* release io space registers */
1877 if (is_qla8022(ha)) {
1878 if (ha->nx_pcibase)
1879 iounmap(
1880 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
1881 } else if (ha->reg)
1882 iounmap(ha->reg);
1883 pci_release_regions(ha->pdev);
1884 }
1885
1886 /**
1887 * qla4xxx_mem_alloc - allocates memory for use by adapter.
1888 * @ha: Pointer to host adapter structure
1889 *
1890 * Allocates DMA memory for request and response queues. Also allocates memory
1891 * for srbs.
1892 **/
1893 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
1894 {
1895 unsigned long align;
1896
1897 /* Allocate contiguous block of DMA memory for queues. */
1898 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
1899 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
1900 sizeof(struct shadow_regs) +
1901 MEM_ALIGN_VALUE +
1902 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
1903 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
1904 &ha->queues_dma, GFP_KERNEL);
1905 if (ha->queues == NULL) {
1906 ql4_printk(KERN_WARNING, ha,
1907 "Memory Allocation failed - queues.\n");
1908
1909 goto mem_alloc_error_exit;
1910 }
1911 memset(ha->queues, 0, ha->queues_len);
1912
1913 /*
1914 * As per RISC alignment requirements -- the bus-address must be a
1915 * multiple of the request-ring size (in bytes).
1916 */
1917 align = 0;
1918 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
1919 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
1920 (MEM_ALIGN_VALUE - 1));
1921
1922 /* Update request and response queue pointers. */
1923 ha->request_dma = ha->queues_dma + align;
1924 ha->request_ring = (struct queue_entry *) (ha->queues + align);
1925 ha->response_dma = ha->queues_dma + align +
1926 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
1927 ha->response_ring = (struct queue_entry *) (ha->queues + align +
1928 (REQUEST_QUEUE_DEPTH *
1929 QUEUE_SIZE));
1930 ha->shadow_regs_dma = ha->queues_dma + align +
1931 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
1932 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
1933 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
1934 (REQUEST_QUEUE_DEPTH *
1935 QUEUE_SIZE) +
1936 (RESPONSE_QUEUE_DEPTH *
1937 QUEUE_SIZE));
1938
1939 /* Allocate memory for srb pool. */
1940 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
1941 mempool_free_slab, srb_cachep);
1942 if (ha->srb_mempool == NULL) {
1943 ql4_printk(KERN_WARNING, ha,
1944 "Memory Allocation failed - SRB Pool.\n");
1945
1946 goto mem_alloc_error_exit;
1947 }
1948
1949 ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
1950 CHAP_DMA_BLOCK_SIZE, 8, 0);
1951
1952 if (ha->chap_dma_pool == NULL) {
1953 ql4_printk(KERN_WARNING, ha,
1954 "%s: chap_dma_pool allocation failed..\n", __func__);
1955 goto mem_alloc_error_exit;
1956 }
1957
1958 ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
1959 DDB_DMA_BLOCK_SIZE, 8, 0);
1960
1961 if (ha->fw_ddb_dma_pool == NULL) {
1962 ql4_printk(KERN_WARNING, ha,
1963 "%s: fw_ddb_dma_pool allocation failed..\n",
1964 __func__);
1965 goto mem_alloc_error_exit;
1966 }
1967
1968 return QLA_SUCCESS;
1969
1970 mem_alloc_error_exit:
1971 qla4xxx_mem_free(ha);
1972 return QLA_ERROR;
1973 }
1974
1975 /**
1976 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
1977 * @ha: adapter block pointer.
1978 *
1979 * Note: The caller should not hold the idc lock.
1980 **/
1981 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
1982 {
1983 uint32_t temp, temp_state, temp_val;
1984 int status = QLA_SUCCESS;
1985
1986 temp = qla4_8xxx_rd_32(ha, CRB_TEMP_STATE);
1987
1988 temp_state = qla82xx_get_temp_state(temp);
1989 temp_val = qla82xx_get_temp_val(temp);
1990
1991 if (temp_state == QLA82XX_TEMP_PANIC) {
1992 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
1993 " exceeds maximum allowed. Hardware has been shut"
1994 " down.\n", temp_val);
1995 status = QLA_ERROR;
1996 } else if (temp_state == QLA82XX_TEMP_WARN) {
1997 if (ha->temperature == QLA82XX_TEMP_NORMAL)
1998 ql4_printk(KERN_WARNING, ha, "Device temperature %d"
1999 " degrees C exceeds operating range."
2000 " Immediate action needed.\n", temp_val);
2001 } else {
2002 if (ha->temperature == QLA82XX_TEMP_WARN)
2003 ql4_printk(KERN_INFO, ha, "Device temperature is"
2004 " now %d degrees C in normal range.\n",
2005 temp_val);
2006 }
2007 ha->temperature = temp_state;
2008 return status;
2009 }
2010
2011 /**
2012 * qla4_8xxx_check_fw_alive - Check firmware health
2013 * @ha: Pointer to host adapter structure.
2014 *
2015 * Context: Interrupt
2016 **/
2017 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2018 {
2019 uint32_t fw_heartbeat_counter;
2020 int status = QLA_SUCCESS;
2021
2022 fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
2023 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2024 if (fw_heartbeat_counter == 0xffffffff) {
2025 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2026 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2027 ha->host_no, __func__));
2028 return status;
2029 }
2030
2031 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2032 ha->seconds_since_last_heartbeat++;
2033 /* FW not alive after 2 seconds */
2034 if (ha->seconds_since_last_heartbeat == 2) {
2035 ha->seconds_since_last_heartbeat = 0;
2036
2037 ql4_printk(KERN_INFO, ha,
2038 "scsi(%ld): %s, Dumping hw/fw registers:\n "
2039 " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
2040 " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
2041 " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
2042 " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
2043 ha->host_no, __func__,
2044 qla4_8xxx_rd_32(ha,
2045 QLA82XX_PEG_HALT_STATUS1),
2046 qla4_8xxx_rd_32(ha,
2047 QLA82XX_PEG_HALT_STATUS2),
2048 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
2049 0x3c),
2050 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
2051 0x3c),
2052 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
2053 0x3c),
2054 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
2055 0x3c),
2056 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
2057 0x3c));
2058 status = QLA_ERROR;
2059 }
2060 } else
2061 ha->seconds_since_last_heartbeat = 0;
2062
2063 ha->fw_heartbeat_counter = fw_heartbeat_counter;
2064 return status;
2065 }
2066
2067 /**
2068 * qla4_8xxx_watchdog - Poll dev state
2069 * @ha: Pointer to host adapter structure.
2070 *
2071 * Context: Interrupt
2072 **/
2073 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2074 {
2075 uint32_t dev_state, halt_status;
2076
2077 /* don't poll if reset is going on */
2078 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2079 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2080 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2081 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
2082
2083 if (qla4_8xxx_check_temp(ha)) {
2084 ql4_printk(KERN_INFO, ha, "disabling pause"
2085 " transmit on port 0 & 1.\n");
2086 qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2087 CRB_NIU_XG_PAUSE_CTL_P0 |
2088 CRB_NIU_XG_PAUSE_CTL_P1);
2089 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2090 qla4xxx_wake_dpc(ha);
2091 } else if (dev_state == QLA82XX_DEV_NEED_RESET &&
2092 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2093 if (!ql4xdontresethba) {
2094 ql4_printk(KERN_INFO, ha, "%s: HW State: "
2095 "NEED RESET!\n", __func__);
2096 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2097 qla4xxx_wake_dpc(ha);
2098 }
2099 } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
2100 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2101 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2102 __func__);
2103 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2104 qla4xxx_wake_dpc(ha);
2105 } else {
2106 /* Check firmware health */
2107 if (qla4_8xxx_check_fw_alive(ha)) {
2108 ql4_printk(KERN_INFO, ha, "disabling pause"
2109 " transmit on port 0 & 1.\n");
2110 qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2111 CRB_NIU_XG_PAUSE_CTL_P0 |
2112 CRB_NIU_XG_PAUSE_CTL_P1);
2113 halt_status = qla4_8xxx_rd_32(ha,
2114 QLA82XX_PEG_HALT_STATUS1);
2115
2116 if (LSW(MSB(halt_status)) == 0x67)
2117 ql4_printk(KERN_ERR, ha, "%s:"
2118 " Firmware aborted with"
2119 " error code 0x00006700."
2120 " Device is being reset\n",
2121 __func__);
2122
2123 /* Since we cannot change dev_state in interrupt
2124 * context, set appropriate DPC flag then wakeup
2125 * DPC */
2126 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2127 set_bit(DPC_HA_UNRECOVERABLE,
2128 &ha->dpc_flags);
2129 else {
2130 ql4_printk(KERN_INFO, ha, "%s: detect "
2131 "abort needed!\n", __func__);
2132 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2133 }
2134 qla4xxx_mailbox_premature_completion(ha);
2135 qla4xxx_wake_dpc(ha);
2136 }
2137 }
2138 }
2139 }
2140
2141 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2142 {
2143 struct iscsi_session *sess;
2144 struct ddb_entry *ddb_entry;
2145 struct scsi_qla_host *ha;
2146
2147 sess = cls_sess->dd_data;
2148 ddb_entry = sess->dd_data;
2149 ha = ddb_entry->ha;
2150
2151 if (!(ddb_entry->ddb_type == FLASH_DDB))
2152 return;
2153
2154 if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2155 !iscsi_is_session_online(cls_sess)) {
2156 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2157 INVALID_ENTRY) {
2158 if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2159 0) {
2160 atomic_set(&ddb_entry->retry_relogin_timer,
2161 INVALID_ENTRY);
2162 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2163 set_bit(DF_RELOGIN, &ddb_entry->flags);
2164 DEBUG2(ql4_printk(KERN_INFO, ha,
2165 "%s: index [%d] login device\n",
2166 __func__, ddb_entry->fw_ddb_index));
2167 } else
2168 atomic_dec(&ddb_entry->retry_relogin_timer);
2169 }
2170 }
2171
2172 /* Wait for relogin to timeout */
2173 if (atomic_read(&ddb_entry->relogin_timer) &&
2174 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2175 /*
2176 * If the relogin times out and the device is
2177 * still NOT ONLINE then try and relogin again.
2178 */
2179 if (!iscsi_is_session_online(cls_sess)) {
2180 /* Reset retry relogin timer */
2181 atomic_inc(&ddb_entry->relogin_retry_count);
2182 DEBUG2(ql4_printk(KERN_INFO, ha,
2183 "%s: index[%d] relogin timed out-retrying"
2184 " relogin (%d), retry (%d)\n", __func__,
2185 ddb_entry->fw_ddb_index,
2186 atomic_read(&ddb_entry->relogin_retry_count),
2187 ddb_entry->default_time2wait + 4));
2188 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2189 atomic_set(&ddb_entry->retry_relogin_timer,
2190 ddb_entry->default_time2wait + 4);
2191 }
2192 }
2193 }
2194
2195 /**
2196 * qla4xxx_timer - checks every second for work to do.
2197 * @ha: Pointer to host adapter structure.
2198 **/
2199 static void qla4xxx_timer(struct scsi_qla_host *ha)
2200 {
2201 int start_dpc = 0;
2202 uint16_t w;
2203
2204 iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2205
2206 /* If we are in the middle of AER/EEH processing
2207 * skip any processing and reschedule the timer
2208 */
2209 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2210 mod_timer(&ha->timer, jiffies + HZ);
2211 return;
2212 }
2213
2214 /* Hardware read to trigger an EEH error during mailbox waits. */
2215 if (!pci_channel_offline(ha->pdev))
2216 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
2217
2218 if (is_qla8022(ha)) {
2219 qla4_8xxx_watchdog(ha);
2220 }
2221
2222 if (!is_qla8022(ha)) {
2223 /* Check for heartbeat interval. */
2224 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2225 ha->heartbeat_interval != 0) {
2226 ha->seconds_since_last_heartbeat++;
2227 if (ha->seconds_since_last_heartbeat >
2228 ha->heartbeat_interval + 2)
2229 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2230 }
2231 }
2232
2233 /* Wakeup the dpc routine for this adapter, if needed. */
2234 if (start_dpc ||
2235 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2236 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2237 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
2238 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2239 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2240 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
2241 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
2242 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2243 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2244 test_bit(DPC_AEN, &ha->dpc_flags)) {
2245 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2246 " - dpc flags = 0x%lx\n",
2247 ha->host_no, __func__, ha->dpc_flags));
2248 qla4xxx_wake_dpc(ha);
2249 }
2250
2251 /* Reschedule timer thread to call us back in one second */
2252 mod_timer(&ha->timer, jiffies + HZ);
2253
2254 DEBUG2(ha->seconds_since_last_intr++);
2255 }
2256
2257 /**
2258 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
2259 * @ha: Pointer to host adapter structure.
2260 *
2261 * This routine stalls the driver until all outstanding commands are returned.
2262 * Caller must release the Hardware Lock prior to calling this routine.
2263 **/
2264 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2265 {
2266 uint32_t index = 0;
2267 unsigned long flags;
2268 struct scsi_cmnd *cmd;
2269
2270 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2271
2272 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2273 "complete\n", WAIT_CMD_TOV));
2274
2275 while (!time_after_eq(jiffies, wtime)) {
2276 spin_lock_irqsave(&ha->hardware_lock, flags);
2277 /* Find a command that hasn't completed. */
2278 for (index = 0; index < ha->host->can_queue; index++) {
2279 cmd = scsi_host_find_tag(ha->host, index);
2280 /*
2281 * We cannot just check if the index is valid,
2282 * becase if we are run from the scsi eh, then
2283 * the scsi/block layer is going to prevent
2284 * the tag from being released.
2285 */
2286 if (cmd != NULL && CMD_SP(cmd))
2287 break;
2288 }
2289 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2290
2291 /* If No Commands are pending, wait is complete */
2292 if (index == ha->host->can_queue)
2293 return QLA_SUCCESS;
2294
2295 msleep(1000);
2296 }
2297 /* If we timed out on waiting for commands to come back
2298 * return ERROR. */
2299 return QLA_ERROR;
2300 }
2301
2302 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
2303 {
2304 uint32_t ctrl_status;
2305 unsigned long flags = 0;
2306
2307 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
2308
2309 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2310 return QLA_ERROR;
2311
2312 spin_lock_irqsave(&ha->hardware_lock, flags);
2313
2314 /*
2315 * If the SCSI Reset Interrupt bit is set, clear it.
2316 * Otherwise, the Soft Reset won't work.
2317 */
2318 ctrl_status = readw(&ha->reg->ctrl_status);
2319 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2320 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2321
2322 /* Issue Soft Reset */
2323 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2324 readl(&ha->reg->ctrl_status);
2325
2326 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2327 return QLA_SUCCESS;
2328 }
2329
2330 /**
2331 * qla4xxx_soft_reset - performs soft reset.
2332 * @ha: Pointer to host adapter structure.
2333 **/
2334 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2335 {
2336 uint32_t max_wait_time;
2337 unsigned long flags = 0;
2338 int status;
2339 uint32_t ctrl_status;
2340
2341 status = qla4xxx_hw_reset(ha);
2342 if (status != QLA_SUCCESS)
2343 return status;
2344
2345 status = QLA_ERROR;
2346 /* Wait until the Network Reset Intr bit is cleared */
2347 max_wait_time = RESET_INTR_TOV;
2348 do {
2349 spin_lock_irqsave(&ha->hardware_lock, flags);
2350 ctrl_status = readw(&ha->reg->ctrl_status);
2351 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2352
2353 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2354 break;
2355
2356 msleep(1000);
2357 } while ((--max_wait_time));
2358
2359 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2360 DEBUG2(printk(KERN_WARNING
2361 "scsi%ld: Network Reset Intr not cleared by "
2362 "Network function, clearing it now!\n",
2363 ha->host_no));
2364 spin_lock_irqsave(&ha->hardware_lock, flags);
2365 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2366 readl(&ha->reg->ctrl_status);
2367 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2368 }
2369
2370 /* Wait until the firmware tells us the Soft Reset is done */
2371 max_wait_time = SOFT_RESET_TOV;
2372 do {
2373 spin_lock_irqsave(&ha->hardware_lock, flags);
2374 ctrl_status = readw(&ha->reg->ctrl_status);
2375 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2376
2377 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2378 status = QLA_SUCCESS;
2379 break;
2380 }
2381
2382 msleep(1000);
2383 } while ((--max_wait_time));
2384
2385 /*
2386 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2387 * after the soft reset has taken place.
2388 */
2389 spin_lock_irqsave(&ha->hardware_lock, flags);
2390 ctrl_status = readw(&ha->reg->ctrl_status);
2391 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2392 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2393 readl(&ha->reg->ctrl_status);
2394 }
2395 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2396
2397 /* If soft reset fails then most probably the bios on other
2398 * function is also enabled.
2399 * Since the initialization is sequential the other fn
2400 * wont be able to acknowledge the soft reset.
2401 * Issue a force soft reset to workaround this scenario.
2402 */
2403 if (max_wait_time == 0) {
2404 /* Issue Force Soft Reset */
2405 spin_lock_irqsave(&ha->hardware_lock, flags);
2406 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2407 readl(&ha->reg->ctrl_status);
2408 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2409 /* Wait until the firmware tells us the Soft Reset is done */
2410 max_wait_time = SOFT_RESET_TOV;
2411 do {
2412 spin_lock_irqsave(&ha->hardware_lock, flags);
2413 ctrl_status = readw(&ha->reg->ctrl_status);
2414 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2415
2416 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2417 status = QLA_SUCCESS;
2418 break;
2419 }
2420
2421 msleep(1000);
2422 } while ((--max_wait_time));
2423 }
2424
2425 return status;
2426 }
2427
2428 /**
2429 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
2430 * @ha: Pointer to host adapter structure.
2431 * @res: returned scsi status
2432 *
2433 * This routine is called just prior to a HARD RESET to return all
2434 * outstanding commands back to the Operating System.
2435 * Caller should make sure that the following locks are released
2436 * before this calling routine: Hardware lock, and io_request_lock.
2437 **/
2438 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
2439 {
2440 struct srb *srb;
2441 int i;
2442 unsigned long flags;
2443
2444 spin_lock_irqsave(&ha->hardware_lock, flags);
2445 for (i = 0; i < ha->host->can_queue; i++) {
2446 srb = qla4xxx_del_from_active_array(ha, i);
2447 if (srb != NULL) {
2448 srb->cmd->result = res;
2449 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2450 }
2451 }
2452 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2453 }
2454
2455 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2456 {
2457 clear_bit(AF_ONLINE, &ha->flags);
2458
2459 /* Disable the board */
2460 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
2461
2462 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2463 qla4xxx_mark_all_devices_missing(ha);
2464 clear_bit(AF_INIT_DONE, &ha->flags);
2465 }
2466
2467 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2468 {
2469 struct iscsi_session *sess;
2470 struct ddb_entry *ddb_entry;
2471
2472 sess = cls_session->dd_data;
2473 ddb_entry = sess->dd_data;
2474 ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
2475
2476 if (ddb_entry->ddb_type == FLASH_DDB)
2477 iscsi_block_session(ddb_entry->sess);
2478 else
2479 iscsi_session_failure(cls_session->dd_data,
2480 ISCSI_ERR_CONN_FAILED);
2481 }
2482
2483 /**
2484 * qla4xxx_recover_adapter - recovers adapter after a fatal error
2485 * @ha: Pointer to host adapter structure.
2486 **/
2487 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
2488 {
2489 int status = QLA_ERROR;
2490 uint8_t reset_chip = 0;
2491 uint32_t dev_state;
2492 unsigned long wait;
2493
2494 /* Stall incoming I/O until we are done */
2495 scsi_block_requests(ha->host);
2496 clear_bit(AF_ONLINE, &ha->flags);
2497 clear_bit(AF_LINK_UP, &ha->flags);
2498
2499 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
2500
2501 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2502
2503 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2504
2505 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2506 reset_chip = 1;
2507
2508 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2509 * do not reset adapter, jump to initialize_adapter */
2510 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2511 status = QLA_SUCCESS;
2512 goto recover_ha_init_adapter;
2513 }
2514
2515 /* For the ISP-82xx adapter, issue a stop_firmware if invoked
2516 * from eh_host_reset or ioctl module */
2517 if (is_qla8022(ha) && !reset_chip &&
2518 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2519
2520 DEBUG2(ql4_printk(KERN_INFO, ha,
2521 "scsi%ld: %s - Performing stop_firmware...\n",
2522 ha->host_no, __func__));
2523 status = ha->isp_ops->reset_firmware(ha);
2524 if (status == QLA_SUCCESS) {
2525 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2526 qla4xxx_cmd_wait(ha);
2527 ha->isp_ops->disable_intrs(ha);
2528 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2529 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2530 } else {
2531 /* If the stop_firmware fails then
2532 * reset the entire chip */
2533 reset_chip = 1;
2534 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2535 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2536 }
2537 }
2538
2539 /* Issue full chip reset if recovering from a catastrophic error,
2540 * or if stop_firmware fails for ISP-82xx.
2541 * This is the default case for ISP-4xxx */
2542 if (!is_qla8022(ha) || reset_chip) {
2543 if (!is_qla8022(ha))
2544 goto chip_reset;
2545
2546 /* Check if 82XX firmware is alive or not
2547 * We may have arrived here from NEED_RESET
2548 * detection only */
2549 if (test_bit(AF_FW_RECOVERY, &ha->flags))
2550 goto chip_reset;
2551
2552 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
2553 while (time_before(jiffies, wait)) {
2554 if (qla4_8xxx_check_fw_alive(ha)) {
2555 qla4xxx_mailbox_premature_completion(ha);
2556 break;
2557 }
2558
2559 set_current_state(TASK_UNINTERRUPTIBLE);
2560 schedule_timeout(HZ);
2561 }
2562
2563 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2564 qla4xxx_cmd_wait(ha);
2565 chip_reset:
2566 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2567 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2568 DEBUG2(ql4_printk(KERN_INFO, ha,
2569 "scsi%ld: %s - Performing chip reset..\n",
2570 ha->host_no, __func__));
2571 status = ha->isp_ops->reset_chip(ha);
2572 }
2573
2574 /* Flush any pending ddb changed AENs */
2575 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2576
2577 recover_ha_init_adapter:
2578 /* Upon successful firmware/chip reset, re-initialize the adapter */
2579 if (status == QLA_SUCCESS) {
2580 /* For ISP-4xxx, force function 1 to always initialize
2581 * before function 3 to prevent both funcions from
2582 * stepping on top of the other */
2583 if (!is_qla8022(ha) && (ha->mac_index == 3))
2584 ssleep(6);
2585
2586 /* NOTE: AF_ONLINE flag set upon successful completion of
2587 * qla4xxx_initialize_adapter */
2588 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
2589 }
2590
2591 /* Retry failed adapter initialization, if necessary
2592 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
2593 * case to prevent ping-pong resets between functions */
2594 if (!test_bit(AF_ONLINE, &ha->flags) &&
2595 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2596 /* Adapter initialization failed, see if we can retry
2597 * resetting the ha.
2598 * Since we don't want to block the DPC for too long
2599 * with multiple resets in the same thread,
2600 * utilize DPC to retry */
2601 if (is_qla8022(ha)) {
2602 qla4_8xxx_idc_lock(ha);
2603 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
2604 qla4_8xxx_idc_unlock(ha);
2605 if (dev_state == QLA82XX_DEV_FAILED) {
2606 ql4_printk(KERN_INFO, ha, "%s: don't retry "
2607 "recover adapter. H/W is in Failed "
2608 "state\n", __func__);
2609 qla4xxx_dead_adapter_cleanup(ha);
2610 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2611 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
2612 clear_bit(DPC_RESET_HA_FW_CONTEXT,
2613 &ha->dpc_flags);
2614 status = QLA_ERROR;
2615
2616 goto exit_recover;
2617 }
2618 }
2619
2620 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
2621 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
2622 DEBUG2(printk("scsi%ld: recover adapter - retrying "
2623 "(%d) more times\n", ha->host_no,
2624 ha->retry_reset_ha_cnt));
2625 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2626 status = QLA_ERROR;
2627 } else {
2628 if (ha->retry_reset_ha_cnt > 0) {
2629 /* Schedule another Reset HA--DPC will retry */
2630 ha->retry_reset_ha_cnt--;
2631 DEBUG2(printk("scsi%ld: recover adapter - "
2632 "retry remaining %d\n",
2633 ha->host_no,
2634 ha->retry_reset_ha_cnt));
2635 status = QLA_ERROR;
2636 }
2637
2638 if (ha->retry_reset_ha_cnt == 0) {
2639 /* Recover adapter retries have been exhausted.
2640 * Adapter DEAD */
2641 DEBUG2(printk("scsi%ld: recover adapter "
2642 "failed - board disabled\n",
2643 ha->host_no));
2644 qla4xxx_dead_adapter_cleanup(ha);
2645 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2646 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
2647 clear_bit(DPC_RESET_HA_FW_CONTEXT,
2648 &ha->dpc_flags);
2649 status = QLA_ERROR;
2650 }
2651 }
2652 } else {
2653 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
2654 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2655 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
2656 }
2657
2658 exit_recover:
2659 ha->adapter_error_count++;
2660
2661 if (test_bit(AF_ONLINE, &ha->flags))
2662 ha->isp_ops->enable_intrs(ha);
2663
2664 scsi_unblock_requests(ha->host);
2665
2666 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2667 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
2668 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
2669
2670 return status;
2671 }
2672
2673 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
2674 {
2675 struct iscsi_session *sess;
2676 struct ddb_entry *ddb_entry;
2677 struct scsi_qla_host *ha;
2678
2679 sess = cls_session->dd_data;
2680 ddb_entry = sess->dd_data;
2681 ha = ddb_entry->ha;
2682 if (!iscsi_is_session_online(cls_session)) {
2683 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
2684 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2685 " unblock session\n", ha->host_no, __func__,
2686 ddb_entry->fw_ddb_index);
2687 iscsi_unblock_session(ddb_entry->sess);
2688 } else {
2689 /* Trigger relogin */
2690 if (ddb_entry->ddb_type == FLASH_DDB) {
2691 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
2692 qla4xxx_arm_relogin_timer(ddb_entry);
2693 } else
2694 iscsi_session_failure(cls_session->dd_data,
2695 ISCSI_ERR_CONN_FAILED);
2696 }
2697 }
2698 }
2699
2700 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
2701 {
2702 struct iscsi_session *sess;
2703 struct ddb_entry *ddb_entry;
2704 struct scsi_qla_host *ha;
2705
2706 sess = cls_session->dd_data;
2707 ddb_entry = sess->dd_data;
2708 ha = ddb_entry->ha;
2709 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2710 " unblock session\n", ha->host_no, __func__,
2711 ddb_entry->fw_ddb_index);
2712
2713 iscsi_unblock_session(ddb_entry->sess);
2714
2715 /* Start scan target */
2716 if (test_bit(AF_ONLINE, &ha->flags)) {
2717 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2718 " start scan\n", ha->host_no, __func__,
2719 ddb_entry->fw_ddb_index);
2720 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
2721 }
2722 return QLA_SUCCESS;
2723 }
2724
2725 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
2726 {
2727 struct iscsi_session *sess;
2728 struct ddb_entry *ddb_entry;
2729 struct scsi_qla_host *ha;
2730
2731 sess = cls_session->dd_data;
2732 ddb_entry = sess->dd_data;
2733 ha = ddb_entry->ha;
2734 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
2735 " unblock user space session\n", ha->host_no, __func__,
2736 ddb_entry->fw_ddb_index);
2737 iscsi_conn_start(ddb_entry->conn);
2738 iscsi_conn_login_event(ddb_entry->conn,
2739 ISCSI_CONN_STATE_LOGGED_IN);
2740
2741 return QLA_SUCCESS;
2742 }
2743
2744 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
2745 {
2746 iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
2747 }
2748
2749 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2750 {
2751 uint16_t relogin_timer;
2752 struct iscsi_session *sess;
2753 struct ddb_entry *ddb_entry;
2754 struct scsi_qla_host *ha;
2755
2756 sess = cls_sess->dd_data;
2757 ddb_entry = sess->dd_data;
2758 ha = ddb_entry->ha;
2759
2760 relogin_timer = max(ddb_entry->default_relogin_timeout,
2761 (uint16_t)RELOGIN_TOV);
2762 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
2763
2764 DEBUG2(ql4_printk(KERN_INFO, ha,
2765 "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
2766 ddb_entry->fw_ddb_index, relogin_timer));
2767
2768 qla4xxx_login_flash_ddb(cls_sess);
2769 }
2770
2771 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
2772 {
2773 struct iscsi_session *sess;
2774 struct ddb_entry *ddb_entry;
2775 struct scsi_qla_host *ha;
2776
2777 sess = cls_sess->dd_data;
2778 ddb_entry = sess->dd_data;
2779 ha = ddb_entry->ha;
2780
2781 if (!(ddb_entry->ddb_type == FLASH_DDB))
2782 return;
2783
2784 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
2785 !iscsi_is_session_online(cls_sess)) {
2786 DEBUG2(ql4_printk(KERN_INFO, ha,
2787 "relogin issued\n"));
2788 qla4xxx_relogin_flash_ddb(cls_sess);
2789 }
2790 }
2791
2792 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
2793 {
2794 if (ha->dpc_thread)
2795 queue_work(ha->dpc_thread, &ha->dpc_work);
2796 }
2797
2798 /**
2799 * qla4xxx_do_dpc - dpc routine
2800 * @data: in our case pointer to adapter structure
2801 *
2802 * This routine is a task that is schedule by the interrupt handler
2803 * to perform the background processing for interrupts. We put it
2804 * on a task queue that is consumed whenever the scheduler runs; that's
2805 * so you can do anything (i.e. put the process to sleep etc). In fact,
2806 * the mid-level tries to sleep when it reaches the driver threshold
2807 * "host->can_queue". This can cause a panic if we were in our interrupt code.
2808 **/
2809 static void qla4xxx_do_dpc(struct work_struct *work)
2810 {
2811 struct scsi_qla_host *ha =
2812 container_of(work, struct scsi_qla_host, dpc_work);
2813 int status = QLA_ERROR;
2814
2815 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
2816 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
2817 ha->host_no, __func__, ha->flags, ha->dpc_flags))
2818
2819 /* Initialization not yet finished. Don't do anything yet. */
2820 if (!test_bit(AF_INIT_DONE, &ha->flags))
2821 return;
2822
2823 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2824 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
2825 ha->host_no, __func__, ha->flags));
2826 return;
2827 }
2828
2829 if (is_qla8022(ha)) {
2830 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
2831 qla4_8xxx_idc_lock(ha);
2832 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2833 QLA82XX_DEV_FAILED);
2834 qla4_8xxx_idc_unlock(ha);
2835 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
2836 qla4_8xxx_device_state_handler(ha);
2837 }
2838 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2839 qla4_8xxx_need_qsnt_handler(ha);
2840 }
2841 }
2842
2843 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
2844 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2845 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2846 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
2847 if (ql4xdontresethba) {
2848 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
2849 ha->host_no, __func__));
2850 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
2851 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
2852 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2853 goto dpc_post_reset_ha;
2854 }
2855 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2856 test_bit(DPC_RESET_HA, &ha->dpc_flags))
2857 qla4xxx_recover_adapter(ha);
2858
2859 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2860 uint8_t wait_time = RESET_INTR_TOV;
2861
2862 while ((readw(&ha->reg->ctrl_status) &
2863 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
2864 if (--wait_time == 0)
2865 break;
2866 msleep(1000);
2867 }
2868 if (wait_time == 0)
2869 DEBUG2(printk("scsi%ld: %s: SR|FSR "
2870 "bit not cleared-- resetting\n",
2871 ha->host_no, __func__));
2872 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2873 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
2874 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2875 status = qla4xxx_recover_adapter(ha);
2876 }
2877 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
2878 if (status == QLA_SUCCESS)
2879 ha->isp_ops->enable_intrs(ha);
2880 }
2881 }
2882
2883 dpc_post_reset_ha:
2884 /* ---- process AEN? --- */
2885 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
2886 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
2887
2888 /* ---- Get DHCP IP Address? --- */
2889 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
2890 qla4xxx_get_dhcp_ip_address(ha);
2891
2892 /* ---- relogin device? --- */
2893 if (adapter_up(ha) &&
2894 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
2895 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
2896 }
2897
2898 /* ---- link change? --- */
2899 if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
2900 if (!test_bit(AF_LINK_UP, &ha->flags)) {
2901 /* ---- link down? --- */
2902 qla4xxx_mark_all_devices_missing(ha);
2903 } else {
2904 /* ---- link up? --- *
2905 * F/W will auto login to all devices ONLY ONCE after
2906 * link up during driver initialization and runtime
2907 * fatal error recovery. Therefore, the driver must
2908 * manually relogin to devices when recovering from
2909 * connection failures, logouts, expired KATO, etc. */
2910 if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
2911 qla4xxx_build_ddb_list(ha, ha->is_reset);
2912 iscsi_host_for_each_session(ha->host,
2913 qla4xxx_login_flash_ddb);
2914 } else
2915 qla4xxx_relogin_all_devices(ha);
2916 }
2917 }
2918 }
2919
2920 /**
2921 * qla4xxx_free_adapter - release the adapter
2922 * @ha: pointer to adapter structure
2923 **/
2924 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
2925 {
2926 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2927
2928 if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
2929 /* Turn-off interrupts on the card. */
2930 ha->isp_ops->disable_intrs(ha);
2931 }
2932
2933 /* Remove timer thread, if present */
2934 if (ha->timer_active)
2935 qla4xxx_stop_timer(ha);
2936
2937 /* Kill the kernel thread for this host */
2938 if (ha->dpc_thread)
2939 destroy_workqueue(ha->dpc_thread);
2940
2941 /* Kill the kernel thread for this host */
2942 if (ha->task_wq)
2943 destroy_workqueue(ha->task_wq);
2944
2945 /* Put firmware in known state */
2946 ha->isp_ops->reset_firmware(ha);
2947
2948 if (is_qla8022(ha)) {
2949 qla4_8xxx_idc_lock(ha);
2950 qla4_8xxx_clear_drv_active(ha);
2951 qla4_8xxx_idc_unlock(ha);
2952 }
2953
2954 /* Detach interrupts */
2955 if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
2956 qla4xxx_free_irqs(ha);
2957
2958 /* free extra memory */
2959 qla4xxx_mem_free(ha);
2960 }
2961
2962 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
2963 {
2964 int status = 0;
2965 uint8_t revision_id;
2966 unsigned long mem_base, mem_len, db_base, db_len;
2967 struct pci_dev *pdev = ha->pdev;
2968
2969 status = pci_request_regions(pdev, DRIVER_NAME);
2970 if (status) {
2971 printk(KERN_WARNING
2972 "scsi(%ld) Failed to reserve PIO regions (%s) "
2973 "status=%d\n", ha->host_no, pci_name(pdev), status);
2974 goto iospace_error_exit;
2975 }
2976
2977 pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id);
2978 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
2979 __func__, revision_id));
2980 ha->revision_id = revision_id;
2981
2982 /* remap phys address */
2983 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
2984 mem_len = pci_resource_len(pdev, 0);
2985 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
2986 __func__, mem_base, mem_len));
2987
2988 /* mapping of pcibase pointer */
2989 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
2990 if (!ha->nx_pcibase) {
2991 printk(KERN_ERR
2992 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
2993 pci_release_regions(ha->pdev);
2994 goto iospace_error_exit;
2995 }
2996
2997 /* Mapping of IO base pointer, door bell read and write pointer */
2998
2999 /* mapping of IO base pointer */
3000 ha->qla4_8xxx_reg =
3001 (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase +
3002 0xbc000 + (ha->pdev->devfn << 11));
3003
3004 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
3005 db_len = pci_resource_len(pdev, 4);
3006
3007 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3008 QLA82XX_CAM_RAM_DB2);
3009
3010 return 0;
3011 iospace_error_exit:
3012 return -ENOMEM;
3013 }
3014
3015 /***
3016 * qla4xxx_iospace_config - maps registers
3017 * @ha: pointer to adapter structure
3018 *
3019 * This routines maps HBA's registers from the pci address space
3020 * into the kernel virtual address space for memory mapped i/o.
3021 **/
3022 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3023 {
3024 unsigned long pio, pio_len, pio_flags;
3025 unsigned long mmio, mmio_len, mmio_flags;
3026
3027 pio = pci_resource_start(ha->pdev, 0);
3028 pio_len = pci_resource_len(ha->pdev, 0);
3029 pio_flags = pci_resource_flags(ha->pdev, 0);
3030 if (pio_flags & IORESOURCE_IO) {
3031 if (pio_len < MIN_IOBASE_LEN) {
3032 ql4_printk(KERN_WARNING, ha,
3033 "Invalid PCI I/O region size\n");
3034 pio = 0;
3035 }
3036 } else {
3037 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3038 pio = 0;
3039 }
3040
3041 /* Use MMIO operations for all accesses. */
3042 mmio = pci_resource_start(ha->pdev, 1);
3043 mmio_len = pci_resource_len(ha->pdev, 1);
3044 mmio_flags = pci_resource_flags(ha->pdev, 1);
3045
3046 if (!(mmio_flags & IORESOURCE_MEM)) {
3047 ql4_printk(KERN_ERR, ha,
3048 "region #0 not an MMIO resource, aborting\n");
3049
3050 goto iospace_error_exit;
3051 }
3052
3053 if (mmio_len < MIN_IOBASE_LEN) {
3054 ql4_printk(KERN_ERR, ha,
3055 "Invalid PCI mem region size, aborting\n");
3056 goto iospace_error_exit;
3057 }
3058
3059 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3060 ql4_printk(KERN_WARNING, ha,
3061 "Failed to reserve PIO/MMIO regions\n");
3062
3063 goto iospace_error_exit;
3064 }
3065
3066 ha->pio_address = pio;
3067 ha->pio_length = pio_len;
3068 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3069 if (!ha->reg) {
3070 ql4_printk(KERN_ERR, ha,
3071 "cannot remap MMIO, aborting\n");
3072
3073 goto iospace_error_exit;
3074 }
3075
3076 return 0;
3077
3078 iospace_error_exit:
3079 return -ENOMEM;
3080 }
3081
3082 static struct isp_operations qla4xxx_isp_ops = {
3083 .iospace_config = qla4xxx_iospace_config,
3084 .pci_config = qla4xxx_pci_config,
3085 .disable_intrs = qla4xxx_disable_intrs,
3086 .enable_intrs = qla4xxx_enable_intrs,
3087 .start_firmware = qla4xxx_start_firmware,
3088 .intr_handler = qla4xxx_intr_handler,
3089 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3090 .reset_chip = qla4xxx_soft_reset,
3091 .reset_firmware = qla4xxx_hw_reset,
3092 .queue_iocb = qla4xxx_queue_iocb,
3093 .complete_iocb = qla4xxx_complete_iocb,
3094 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
3095 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
3096 .get_sys_info = qla4xxx_get_sys_info,
3097 };
3098
3099 static struct isp_operations qla4_8xxx_isp_ops = {
3100 .iospace_config = qla4_8xxx_iospace_config,
3101 .pci_config = qla4_8xxx_pci_config,
3102 .disable_intrs = qla4_8xxx_disable_intrs,
3103 .enable_intrs = qla4_8xxx_enable_intrs,
3104 .start_firmware = qla4_8xxx_load_risc,
3105 .intr_handler = qla4_8xxx_intr_handler,
3106 .interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
3107 .reset_chip = qla4_8xxx_isp_reset,
3108 .reset_firmware = qla4_8xxx_stop_firmware,
3109 .queue_iocb = qla4_8xxx_queue_iocb,
3110 .complete_iocb = qla4_8xxx_complete_iocb,
3111 .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out,
3112 .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in,
3113 .get_sys_info = qla4_8xxx_get_sys_info,
3114 };
3115
3116 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3117 {
3118 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3119 }
3120
3121 uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3122 {
3123 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
3124 }
3125
3126 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3127 {
3128 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3129 }
3130
3131 uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3132 {
3133 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
3134 }
3135
3136 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3137 {
3138 struct scsi_qla_host *ha = data;
3139 char *str = buf;
3140 int rc;
3141
3142 switch (type) {
3143 case ISCSI_BOOT_ETH_FLAGS:
3144 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3145 break;
3146 case ISCSI_BOOT_ETH_INDEX:
3147 rc = sprintf(str, "0\n");
3148 break;
3149 case ISCSI_BOOT_ETH_MAC:
3150 rc = sysfs_format_mac(str, ha->my_mac,
3151 MAC_ADDR_LEN);
3152 break;
3153 default:
3154 rc = -ENOSYS;
3155 break;
3156 }
3157 return rc;
3158 }
3159
3160 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3161 {
3162 int rc;
3163
3164 switch (type) {
3165 case ISCSI_BOOT_ETH_FLAGS:
3166 case ISCSI_BOOT_ETH_MAC:
3167 case ISCSI_BOOT_ETH_INDEX:
3168 rc = S_IRUGO;
3169 break;
3170 default:
3171 rc = 0;
3172 break;
3173 }
3174 return rc;
3175 }
3176
3177 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3178 {
3179 struct scsi_qla_host *ha = data;
3180 char *str = buf;
3181 int rc;
3182
3183 switch (type) {
3184 case ISCSI_BOOT_INI_INITIATOR_NAME:
3185 rc = sprintf(str, "%s\n", ha->name_string);
3186 break;
3187 default:
3188 rc = -ENOSYS;
3189 break;
3190 }
3191 return rc;
3192 }
3193
3194 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3195 {
3196 int rc;
3197
3198 switch (type) {
3199 case ISCSI_BOOT_INI_INITIATOR_NAME:
3200 rc = S_IRUGO;
3201 break;
3202 default:
3203 rc = 0;
3204 break;
3205 }
3206 return rc;
3207 }
3208
3209 static ssize_t
3210 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3211 char *buf)
3212 {
3213 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3214 char *str = buf;
3215 int rc;
3216
3217 switch (type) {
3218 case ISCSI_BOOT_TGT_NAME:
3219 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3220 break;
3221 case ISCSI_BOOT_TGT_IP_ADDR:
3222 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3223 rc = sprintf(buf, "%pI4\n",
3224 &boot_conn->dest_ipaddr.ip_address);
3225 else
3226 rc = sprintf(str, "%pI6\n",
3227 &boot_conn->dest_ipaddr.ip_address);
3228 break;
3229 case ISCSI_BOOT_TGT_PORT:
3230 rc = sprintf(str, "%d\n", boot_conn->dest_port);
3231 break;
3232 case ISCSI_BOOT_TGT_CHAP_NAME:
3233 rc = sprintf(str, "%.*s\n",
3234 boot_conn->chap.target_chap_name_length,
3235 (char *)&boot_conn->chap.target_chap_name);
3236 break;
3237 case ISCSI_BOOT_TGT_CHAP_SECRET:
3238 rc = sprintf(str, "%.*s\n",
3239 boot_conn->chap.target_secret_length,
3240 (char *)&boot_conn->chap.target_secret);
3241 break;
3242 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3243 rc = sprintf(str, "%.*s\n",
3244 boot_conn->chap.intr_chap_name_length,
3245 (char *)&boot_conn->chap.intr_chap_name);
3246 break;
3247 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3248 rc = sprintf(str, "%.*s\n",
3249 boot_conn->chap.intr_secret_length,
3250 (char *)&boot_conn->chap.intr_secret);
3251 break;
3252 case ISCSI_BOOT_TGT_FLAGS:
3253 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3254 break;
3255 case ISCSI_BOOT_TGT_NIC_ASSOC:
3256 rc = sprintf(str, "0\n");
3257 break;
3258 default:
3259 rc = -ENOSYS;
3260 break;
3261 }
3262 return rc;
3263 }
3264
3265 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3266 {
3267 struct scsi_qla_host *ha = data;
3268 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3269
3270 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3271 }
3272
3273 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3274 {
3275 struct scsi_qla_host *ha = data;
3276 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3277
3278 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3279 }
3280
3281 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3282 {
3283 int rc;
3284
3285 switch (type) {
3286 case ISCSI_BOOT_TGT_NAME:
3287 case ISCSI_BOOT_TGT_IP_ADDR:
3288 case ISCSI_BOOT_TGT_PORT:
3289 case ISCSI_BOOT_TGT_CHAP_NAME:
3290 case ISCSI_BOOT_TGT_CHAP_SECRET:
3291 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3292 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3293 case ISCSI_BOOT_TGT_NIC_ASSOC:
3294 case ISCSI_BOOT_TGT_FLAGS:
3295 rc = S_IRUGO;
3296 break;
3297 default:
3298 rc = 0;
3299 break;
3300 }
3301 return rc;
3302 }
3303
3304 static void qla4xxx_boot_release(void *data)
3305 {
3306 struct scsi_qla_host *ha = data;
3307
3308 scsi_host_put(ha->host);
3309 }
3310
3311 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3312 {
3313 dma_addr_t buf_dma;
3314 uint32_t addr, pri_addr, sec_addr;
3315 uint32_t offset;
3316 uint16_t func_num;
3317 uint8_t val;
3318 uint8_t *buf = NULL;
3319 size_t size = 13 * sizeof(uint8_t);
3320 int ret = QLA_SUCCESS;
3321
3322 func_num = PCI_FUNC(ha->pdev->devfn);
3323
3324 ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3325 __func__, ha->pdev->device, func_num);
3326
3327 if (is_qla40XX(ha)) {
3328 if (func_num == 1) {
3329 addr = NVRAM_PORT0_BOOT_MODE;
3330 pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3331 sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3332 } else if (func_num == 3) {
3333 addr = NVRAM_PORT1_BOOT_MODE;
3334 pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3335 sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3336 } else {
3337 ret = QLA_ERROR;
3338 goto exit_boot_info;
3339 }
3340
3341 /* Check Boot Mode */
3342 val = rd_nvram_byte(ha, addr);
3343 if (!(val & 0x07)) {
3344 DEBUG2(ql4_printk(KERN_ERR, ha,
3345 "%s: Failed Boot options : 0x%x\n",
3346 __func__, val));
3347 ret = QLA_ERROR;
3348 goto exit_boot_info;
3349 }
3350
3351 /* get primary valid target index */
3352 val = rd_nvram_byte(ha, pri_addr);
3353 if (val & BIT_7)
3354 ddb_index[0] = (val & 0x7f);
3355
3356 /* get secondary valid target index */
3357 val = rd_nvram_byte(ha, sec_addr);
3358 if (val & BIT_7)
3359 ddb_index[1] = (val & 0x7f);
3360
3361 } else if (is_qla8022(ha)) {
3362 buf = dma_alloc_coherent(&ha->pdev->dev, size,
3363 &buf_dma, GFP_KERNEL);
3364 if (!buf) {
3365 DEBUG2(ql4_printk(KERN_ERR, ha,
3366 "%s: Unable to allocate dma buffer\n",
3367 __func__));
3368 ret = QLA_ERROR;
3369 goto exit_boot_info;
3370 }
3371
3372 if (ha->port_num == 0)
3373 offset = BOOT_PARAM_OFFSET_PORT0;
3374 else if (ha->port_num == 1)
3375 offset = BOOT_PARAM_OFFSET_PORT1;
3376 else {
3377 ret = QLA_ERROR;
3378 goto exit_boot_info_free;
3379 }
3380 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
3381 offset;
3382 if (qla4xxx_get_flash(ha, buf_dma, addr,
3383 13 * sizeof(uint8_t)) != QLA_SUCCESS) {
3384 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
3385 "failed\n", ha->host_no, __func__));
3386 ret = QLA_ERROR;
3387 goto exit_boot_info_free;
3388 }
3389 /* Check Boot Mode */
3390 if (!(buf[1] & 0x07)) {
3391 DEBUG2(ql4_printk(KERN_INFO, ha,
3392 "Failed: Boot options : 0x%x\n",
3393 buf[1]));
3394 ret = QLA_ERROR;
3395 goto exit_boot_info_free;
3396 }
3397
3398 /* get primary valid target index */
3399 if (buf[2] & BIT_7)
3400 ddb_index[0] = buf[2] & 0x7f;
3401
3402 /* get secondary valid target index */
3403 if (buf[11] & BIT_7)
3404 ddb_index[1] = buf[11] & 0x7f;
3405 } else {
3406 ret = QLA_ERROR;
3407 goto exit_boot_info;
3408 }
3409
3410 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
3411 " target ID %d\n", __func__, ddb_index[0],
3412 ddb_index[1]));
3413
3414 ha->pri_ddb_idx = ddb_index[0];
3415 ha->sec_ddb_idx = ddb_index[1];
3416
3417 exit_boot_info_free:
3418 dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
3419 exit_boot_info:
3420 return ret;
3421 }
3422
3423 /**
3424 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
3425 * @ha: pointer to adapter structure
3426 * @username: CHAP username to be returned
3427 * @password: CHAP password to be returned
3428 *
3429 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
3430 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
3431 * So from the CHAP cache find the first BIDI CHAP entry and set it
3432 * to the boot record in sysfs.
3433 **/
3434 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
3435 char *password)
3436 {
3437 int i, ret = -EINVAL;
3438 int max_chap_entries = 0;
3439 struct ql4_chap_table *chap_table;
3440
3441 if (is_qla8022(ha))
3442 max_chap_entries = (ha->hw.flt_chap_size / 2) /
3443 sizeof(struct ql4_chap_table);
3444 else
3445 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
3446
3447 if (!ha->chap_list) {
3448 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
3449 return ret;
3450 }
3451
3452 mutex_lock(&ha->chap_sem);
3453 for (i = 0; i < max_chap_entries; i++) {
3454 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
3455 if (chap_table->cookie !=
3456 __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
3457 continue;
3458 }
3459
3460 if (chap_table->flags & BIT_7) /* local */
3461 continue;
3462
3463 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
3464 continue;
3465
3466 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
3467 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
3468 ret = 0;
3469 break;
3470 }
3471 mutex_unlock(&ha->chap_sem);
3472
3473 return ret;
3474 }
3475
3476
3477 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
3478 struct ql4_boot_session_info *boot_sess,
3479 uint16_t ddb_index)
3480 {
3481 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3482 struct dev_db_entry *fw_ddb_entry;
3483 dma_addr_t fw_ddb_entry_dma;
3484 uint16_t idx;
3485 uint16_t options;
3486 int ret = QLA_SUCCESS;
3487
3488 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3489 &fw_ddb_entry_dma, GFP_KERNEL);
3490 if (!fw_ddb_entry) {
3491 DEBUG2(ql4_printk(KERN_ERR, ha,
3492 "%s: Unable to allocate dma buffer.\n",
3493 __func__));
3494 ret = QLA_ERROR;
3495 return ret;
3496 }
3497
3498 if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
3499 fw_ddb_entry_dma, ddb_index)) {
3500 DEBUG2(ql4_printk(KERN_ERR, ha,
3501 "%s: Flash DDB read Failed\n", __func__));
3502 ret = QLA_ERROR;
3503 goto exit_boot_target;
3504 }
3505
3506 /* Update target name and IP from DDB */
3507 memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
3508 min(sizeof(boot_sess->target_name),
3509 sizeof(fw_ddb_entry->iscsi_name)));
3510
3511 options = le16_to_cpu(fw_ddb_entry->options);
3512 if (options & DDB_OPT_IPV6_DEVICE) {
3513 memcpy(&boot_conn->dest_ipaddr.ip_address,
3514 &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
3515 } else {
3516 boot_conn->dest_ipaddr.ip_type = 0x1;
3517 memcpy(&boot_conn->dest_ipaddr.ip_address,
3518 &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
3519 }
3520
3521 boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
3522
3523 /* update chap information */
3524 idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3525
3526 if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
3527
3528 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
3529
3530 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
3531 target_chap_name,
3532 (char *)&boot_conn->chap.target_secret,
3533 idx);
3534 if (ret) {
3535 ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
3536 ret = QLA_ERROR;
3537 goto exit_boot_target;
3538 }
3539
3540 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
3541 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
3542 }
3543
3544 if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
3545
3546 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
3547
3548 ret = qla4xxx_get_bidi_chap(ha,
3549 (char *)&boot_conn->chap.intr_chap_name,
3550 (char *)&boot_conn->chap.intr_secret);
3551
3552 if (ret) {
3553 ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
3554 ret = QLA_ERROR;
3555 goto exit_boot_target;
3556 }
3557
3558 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
3559 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
3560 }
3561
3562 exit_boot_target:
3563 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3564 fw_ddb_entry, fw_ddb_entry_dma);
3565 return ret;
3566 }
3567
3568 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
3569 {
3570 uint16_t ddb_index[2];
3571 int ret = QLA_ERROR;
3572 int rval;
3573
3574 memset(ddb_index, 0, sizeof(ddb_index));
3575 ddb_index[0] = 0xffff;
3576 ddb_index[1] = 0xffff;
3577 ret = get_fw_boot_info(ha, ddb_index);
3578 if (ret != QLA_SUCCESS) {
3579 DEBUG2(ql4_printk(KERN_ERR, ha,
3580 "%s: Failed to set boot info.\n", __func__));
3581 return ret;
3582 }
3583
3584 if (ql4xdisablesysfsboot)
3585 return QLA_SUCCESS;
3586
3587 if (ddb_index[0] == 0xffff)
3588 goto sec_target;
3589
3590 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
3591 ddb_index[0]);
3592 if (rval != QLA_SUCCESS) {
3593 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Failed to get "
3594 "primary target\n", __func__));
3595 } else
3596 ret = QLA_SUCCESS;
3597
3598 sec_target:
3599 if (ddb_index[1] == 0xffff)
3600 goto exit_get_boot_info;
3601
3602 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
3603 ddb_index[1]);
3604 if (rval != QLA_SUCCESS) {
3605 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Failed to get "
3606 "secondary target\n", __func__));
3607 } else
3608 ret = QLA_SUCCESS;
3609
3610 exit_get_boot_info:
3611 return ret;
3612 }
3613
3614 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
3615 {
3616 struct iscsi_boot_kobj *boot_kobj;
3617
3618 if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
3619 return QLA_ERROR;
3620
3621 if (ql4xdisablesysfsboot) {
3622 ql4_printk(KERN_INFO, ha,
3623 "%s: syfsboot disabled - driver will trigger login"
3624 "and publish session for discovery .\n", __func__);
3625 return QLA_SUCCESS;
3626 }
3627
3628
3629 ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
3630 if (!ha->boot_kset)
3631 goto kset_free;
3632
3633 if (!scsi_host_get(ha->host))
3634 goto kset_free;
3635 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
3636 qla4xxx_show_boot_tgt_pri_info,
3637 qla4xxx_tgt_get_attr_visibility,
3638 qla4xxx_boot_release);
3639 if (!boot_kobj)
3640 goto put_host;
3641
3642 if (!scsi_host_get(ha->host))
3643 goto kset_free;
3644 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
3645 qla4xxx_show_boot_tgt_sec_info,
3646 qla4xxx_tgt_get_attr_visibility,
3647 qla4xxx_boot_release);
3648 if (!boot_kobj)
3649 goto put_host;
3650
3651 if (!scsi_host_get(ha->host))
3652 goto kset_free;
3653 boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
3654 qla4xxx_show_boot_ini_info,
3655 qla4xxx_ini_get_attr_visibility,
3656 qla4xxx_boot_release);
3657 if (!boot_kobj)
3658 goto put_host;
3659
3660 if (!scsi_host_get(ha->host))
3661 goto kset_free;
3662 boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
3663 qla4xxx_show_boot_eth_info,
3664 qla4xxx_eth_get_attr_visibility,
3665 qla4xxx_boot_release);
3666 if (!boot_kobj)
3667 goto put_host;
3668
3669 return QLA_SUCCESS;
3670
3671 put_host:
3672 scsi_host_put(ha->host);
3673 kset_free:
3674 iscsi_boot_destroy_kset(ha->boot_kset);
3675 return -ENOMEM;
3676 }
3677
3678
3679 /**
3680 * qla4xxx_create chap_list - Create CHAP list from FLASH
3681 * @ha: pointer to adapter structure
3682 *
3683 * Read flash and make a list of CHAP entries, during login when a CHAP entry
3684 * is received, it will be checked in this list. If entry exist then the CHAP
3685 * entry index is set in the DDB. If CHAP entry does not exist in this list
3686 * then a new entry is added in FLASH in CHAP table and the index obtained is
3687 * used in the DDB.
3688 **/
3689 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
3690 {
3691 int rval = 0;
3692 uint8_t *chap_flash_data = NULL;
3693 uint32_t offset;
3694 dma_addr_t chap_dma;
3695 uint32_t chap_size = 0;
3696
3697 if (is_qla40XX(ha))
3698 chap_size = MAX_CHAP_ENTRIES_40XX *
3699 sizeof(struct ql4_chap_table);
3700 else /* Single region contains CHAP info for both
3701 * ports which is divided into half for each port.
3702 */
3703 chap_size = ha->hw.flt_chap_size / 2;
3704
3705 chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
3706 &chap_dma, GFP_KERNEL);
3707 if (!chap_flash_data) {
3708 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
3709 return;
3710 }
3711 if (is_qla40XX(ha))
3712 offset = FLASH_CHAP_OFFSET;
3713 else {
3714 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
3715 if (ha->port_num == 1)
3716 offset += chap_size;
3717 }
3718
3719 rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
3720 if (rval != QLA_SUCCESS)
3721 goto exit_chap_list;
3722
3723 if (ha->chap_list == NULL)
3724 ha->chap_list = vmalloc(chap_size);
3725 if (ha->chap_list == NULL) {
3726 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
3727 goto exit_chap_list;
3728 }
3729
3730 memcpy(ha->chap_list, chap_flash_data, chap_size);
3731
3732 exit_chap_list:
3733 dma_free_coherent(&ha->pdev->dev, chap_size,
3734 chap_flash_data, chap_dma);
3735 }
3736
3737 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
3738 struct ql4_tuple_ddb *tddb)
3739 {
3740 struct scsi_qla_host *ha;
3741 struct iscsi_cls_session *cls_sess;
3742 struct iscsi_cls_conn *cls_conn;
3743 struct iscsi_session *sess;
3744 struct iscsi_conn *conn;
3745
3746 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
3747 ha = ddb_entry->ha;
3748 cls_sess = ddb_entry->sess;
3749 sess = cls_sess->dd_data;
3750 cls_conn = ddb_entry->conn;
3751 conn = cls_conn->dd_data;
3752
3753 tddb->tpgt = sess->tpgt;
3754 tddb->port = conn->persistent_port;
3755 strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
3756 strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
3757 }
3758
3759 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
3760 struct ql4_tuple_ddb *tddb)
3761 {
3762 uint16_t options = 0;
3763
3764 tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3765 memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
3766 min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
3767
3768 options = le16_to_cpu(fw_ddb_entry->options);
3769 if (options & DDB_OPT_IPV6_DEVICE)
3770 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3771 else
3772 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3773
3774 tddb->port = le16_to_cpu(fw_ddb_entry->port);
3775 }
3776
3777 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
3778 struct ql4_tuple_ddb *old_tddb,
3779 struct ql4_tuple_ddb *new_tddb)
3780 {
3781 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
3782 return QLA_ERROR;
3783
3784 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
3785 return QLA_ERROR;
3786
3787 if (old_tddb->port != new_tddb->port)
3788 return QLA_ERROR;
3789
3790 DEBUG2(ql4_printk(KERN_INFO, ha,
3791 "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
3792 old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
3793 old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
3794 new_tddb->ip_addr, new_tddb->iscsi_name));
3795
3796 return QLA_SUCCESS;
3797 }
3798
3799 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
3800 struct dev_db_entry *fw_ddb_entry)
3801 {
3802 struct ddb_entry *ddb_entry;
3803 struct ql4_tuple_ddb *fw_tddb = NULL;
3804 struct ql4_tuple_ddb *tmp_tddb = NULL;
3805 int idx;
3806 int ret = QLA_ERROR;
3807
3808 fw_tddb = vzalloc(sizeof(*fw_tddb));
3809 if (!fw_tddb) {
3810 DEBUG2(ql4_printk(KERN_WARNING, ha,
3811 "Memory Allocation failed.\n"));
3812 ret = QLA_SUCCESS;
3813 goto exit_check;
3814 }
3815
3816 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
3817 if (!tmp_tddb) {
3818 DEBUG2(ql4_printk(KERN_WARNING, ha,
3819 "Memory Allocation failed.\n"));
3820 ret = QLA_SUCCESS;
3821 goto exit_check;
3822 }
3823
3824 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb);
3825
3826 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
3827 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3828 if (ddb_entry == NULL)
3829 continue;
3830
3831 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
3832 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb)) {
3833 ret = QLA_SUCCESS; /* found */
3834 goto exit_check;
3835 }
3836 }
3837
3838 exit_check:
3839 if (fw_tddb)
3840 vfree(fw_tddb);
3841 if (tmp_tddb)
3842 vfree(tmp_tddb);
3843 return ret;
3844 }
3845
3846 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
3847 struct list_head *list_nt,
3848 struct dev_db_entry *fw_ddb_entry)
3849 {
3850 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
3851 struct ql4_tuple_ddb *fw_tddb = NULL;
3852 struct ql4_tuple_ddb *tmp_tddb = NULL;
3853 int ret = QLA_ERROR;
3854
3855 fw_tddb = vzalloc(sizeof(*fw_tddb));
3856 if (!fw_tddb) {
3857 DEBUG2(ql4_printk(KERN_WARNING, ha,
3858 "Memory Allocation failed.\n"));
3859 ret = QLA_SUCCESS;
3860 goto exit_check;
3861 }
3862
3863 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
3864 if (!tmp_tddb) {
3865 DEBUG2(ql4_printk(KERN_WARNING, ha,
3866 "Memory Allocation failed.\n"));
3867 ret = QLA_SUCCESS;
3868 goto exit_check;
3869 }
3870
3871 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb);
3872
3873 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
3874 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb);
3875 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb)) {
3876 ret = QLA_SUCCESS; /* found */
3877 goto exit_check;
3878 }
3879 }
3880
3881 exit_check:
3882 if (fw_tddb)
3883 vfree(fw_tddb);
3884 if (tmp_tddb)
3885 vfree(tmp_tddb);
3886 return ret;
3887 }
3888
3889 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
3890 {
3891 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
3892
3893 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
3894 list_del_init(&ddb_idx->list);
3895 vfree(ddb_idx);
3896 }
3897 }
3898
3899 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
3900 struct dev_db_entry *fw_ddb_entry)
3901 {
3902 struct iscsi_endpoint *ep;
3903 struct sockaddr_in *addr;
3904 struct sockaddr_in6 *addr6;
3905 struct sockaddr *dst_addr;
3906 char *ip;
3907
3908 /* TODO: need to destroy on unload iscsi_endpoint*/
3909 dst_addr = vmalloc(sizeof(*dst_addr));
3910 if (!dst_addr)
3911 return NULL;
3912
3913 if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
3914 dst_addr->sa_family = AF_INET6;
3915 addr6 = (struct sockaddr_in6 *)dst_addr;
3916 ip = (char *)&addr6->sin6_addr;
3917 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3918 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
3919
3920 } else {
3921 dst_addr->sa_family = AF_INET;
3922 addr = (struct sockaddr_in *)dst_addr;
3923 ip = (char *)&addr->sin_addr;
3924 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
3925 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
3926 }
3927
3928 ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
3929 vfree(dst_addr);
3930 return ep;
3931 }
3932
3933 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
3934 {
3935 if (ql4xdisablesysfsboot)
3936 return QLA_SUCCESS;
3937 if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
3938 return QLA_ERROR;
3939 return QLA_SUCCESS;
3940 }
3941
3942 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
3943 struct ddb_entry *ddb_entry)
3944 {
3945 uint16_t def_timeout;
3946
3947 ddb_entry->ddb_type = FLASH_DDB;
3948 ddb_entry->fw_ddb_index = INVALID_ENTRY;
3949 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3950 ddb_entry->ha = ha;
3951 ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
3952 ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
3953
3954 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
3955 atomic_set(&ddb_entry->relogin_timer, 0);
3956 atomic_set(&ddb_entry->relogin_retry_count, 0);
3957 def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
3958 ddb_entry->default_relogin_timeout =
3959 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
3960 def_timeout : LOGIN_TOV;
3961 ddb_entry->default_time2wait =
3962 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
3963 }
3964
3965 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
3966 {
3967 uint32_t idx = 0;
3968 uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
3969 uint32_t sts[MBOX_REG_COUNT];
3970 uint32_t ip_state;
3971 unsigned long wtime;
3972 int ret;
3973
3974 wtime = jiffies + (HZ * IP_CONFIG_TOV);
3975 do {
3976 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
3977 if (ip_idx[idx] == -1)
3978 continue;
3979
3980 ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
3981
3982 if (ret == QLA_ERROR) {
3983 ip_idx[idx] = -1;
3984 continue;
3985 }
3986
3987 ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
3988
3989 DEBUG2(ql4_printk(KERN_INFO, ha,
3990 "Waiting for IP state for idx = %d, state = 0x%x\n",
3991 ip_idx[idx], ip_state));
3992 if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
3993 ip_state == IP_ADDRSTATE_INVALID ||
3994 ip_state == IP_ADDRSTATE_PREFERRED ||
3995 ip_state == IP_ADDRSTATE_DEPRICATED ||
3996 ip_state == IP_ADDRSTATE_DISABLING)
3997 ip_idx[idx] = -1;
3998 }
3999
4000 /* Break if all IP states checked */
4001 if ((ip_idx[0] == -1) &&
4002 (ip_idx[1] == -1) &&
4003 (ip_idx[2] == -1) &&
4004 (ip_idx[3] == -1))
4005 break;
4006 schedule_timeout_uninterruptible(HZ);
4007 } while (time_after(wtime, jiffies));
4008 }
4009
4010 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4011 struct list_head *list_st)
4012 {
4013 struct qla_ddb_index *st_ddb_idx;
4014 int max_ddbs;
4015 int fw_idx_size;
4016 struct dev_db_entry *fw_ddb_entry;
4017 dma_addr_t fw_ddb_dma;
4018 int ret;
4019 uint32_t idx = 0, next_idx = 0;
4020 uint32_t state = 0, conn_err = 0;
4021 uint16_t conn_id = 0;
4022
4023 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4024 &fw_ddb_dma);
4025 if (fw_ddb_entry == NULL) {
4026 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4027 goto exit_st_list;
4028 }
4029
4030 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4031 MAX_DEV_DB_ENTRIES;
4032 fw_idx_size = sizeof(struct qla_ddb_index);
4033
4034 for (idx = 0; idx < max_ddbs; idx = next_idx) {
4035 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4036 NULL, &next_idx, &state,
4037 &conn_err, NULL, &conn_id);
4038 if (ret == QLA_ERROR)
4039 break;
4040
4041 /* Check if ST, add to the list_st */
4042 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4043 goto continue_next_st;
4044
4045 st_ddb_idx = vzalloc(fw_idx_size);
4046 if (!st_ddb_idx)
4047 break;
4048
4049 st_ddb_idx->fw_ddb_idx = idx;
4050
4051 list_add_tail(&st_ddb_idx->list, list_st);
4052 continue_next_st:
4053 if (next_idx == 0)
4054 break;
4055 }
4056
4057 exit_st_list:
4058 if (fw_ddb_entry)
4059 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4060 }
4061
4062 /**
4063 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
4064 * @ha: pointer to adapter structure
4065 * @list_ddb: List from which failed ddb to be removed
4066 *
4067 * Iterate over the list of DDBs and find and remove DDBs that are either in
4068 * no connection active state or failed state
4069 **/
4070 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4071 struct list_head *list_ddb)
4072 {
4073 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
4074 uint32_t next_idx = 0;
4075 uint32_t state = 0, conn_err = 0;
4076 int ret;
4077
4078 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4079 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4080 NULL, 0, NULL, &next_idx, &state,
4081 &conn_err, NULL, NULL);
4082 if (ret == QLA_ERROR)
4083 continue;
4084
4085 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4086 state == DDB_DS_SESSION_FAILED) {
4087 list_del_init(&ddb_idx->list);
4088 vfree(ddb_idx);
4089 }
4090 }
4091 }
4092
4093 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4094 struct dev_db_entry *fw_ddb_entry,
4095 int is_reset)
4096 {
4097 struct iscsi_cls_session *cls_sess;
4098 struct iscsi_session *sess;
4099 struct iscsi_cls_conn *cls_conn;
4100 struct iscsi_endpoint *ep;
4101 uint16_t cmds_max = 32;
4102 uint16_t conn_id = 0;
4103 uint32_t initial_cmdsn = 0;
4104 int ret = QLA_SUCCESS;
4105
4106 struct ddb_entry *ddb_entry = NULL;
4107
4108 /* Create session object, with INVALID_ENTRY,
4109 * the targer_id would get set when we issue the login
4110 */
4111 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4112 cmds_max, sizeof(struct ddb_entry),
4113 sizeof(struct ql4_task_data),
4114 initial_cmdsn, INVALID_ENTRY);
4115 if (!cls_sess) {
4116 ret = QLA_ERROR;
4117 goto exit_setup;
4118 }
4119
4120 /*
4121 * so calling module_put function to decrement the
4122 * reference count.
4123 **/
4124 module_put(qla4xxx_iscsi_transport.owner);
4125 sess = cls_sess->dd_data;
4126 ddb_entry = sess->dd_data;
4127 ddb_entry->sess = cls_sess;
4128
4129 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4130 memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4131 sizeof(struct dev_db_entry));
4132
4133 qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4134
4135 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4136
4137 if (!cls_conn) {
4138 ret = QLA_ERROR;
4139 goto exit_setup;
4140 }
4141
4142 ddb_entry->conn = cls_conn;
4143
4144 /* Setup ep, for displaying attributes in sysfs */
4145 ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4146 if (ep) {
4147 ep->conn = cls_conn;
4148 cls_conn->ep = ep;
4149 } else {
4150 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4151 ret = QLA_ERROR;
4152 goto exit_setup;
4153 }
4154
4155 /* Update sess/conn params */
4156 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4157
4158 if (is_reset == RESET_ADAPTER) {
4159 iscsi_block_session(cls_sess);
4160 /* Use the relogin path to discover new devices
4161 * by short-circuting the logic of setting
4162 * timer to relogin - instead set the flags
4163 * to initiate login right away.
4164 */
4165 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4166 set_bit(DF_RELOGIN, &ddb_entry->flags);
4167 }
4168
4169 exit_setup:
4170 return ret;
4171 }
4172
4173 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4174 struct list_head *list_nt, int is_reset)
4175 {
4176 struct dev_db_entry *fw_ddb_entry;
4177 dma_addr_t fw_ddb_dma;
4178 int max_ddbs;
4179 int fw_idx_size;
4180 int ret;
4181 uint32_t idx = 0, next_idx = 0;
4182 uint32_t state = 0, conn_err = 0;
4183 uint16_t conn_id = 0;
4184 struct qla_ddb_index *nt_ddb_idx;
4185
4186 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4187 &fw_ddb_dma);
4188 if (fw_ddb_entry == NULL) {
4189 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4190 goto exit_nt_list;
4191 }
4192 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4193 MAX_DEV_DB_ENTRIES;
4194 fw_idx_size = sizeof(struct qla_ddb_index);
4195
4196 for (idx = 0; idx < max_ddbs; idx = next_idx) {
4197 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4198 NULL, &next_idx, &state,
4199 &conn_err, NULL, &conn_id);
4200 if (ret == QLA_ERROR)
4201 break;
4202
4203 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4204 goto continue_next_nt;
4205
4206 /* Check if NT, then add to list it */
4207 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4208 goto continue_next_nt;
4209
4210 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
4211 state == DDB_DS_SESSION_FAILED))
4212 goto continue_next_nt;
4213
4214 DEBUG2(ql4_printk(KERN_INFO, ha,
4215 "Adding DDB to session = 0x%x\n", idx));
4216 if (is_reset == INIT_ADAPTER) {
4217 nt_ddb_idx = vmalloc(fw_idx_size);
4218 if (!nt_ddb_idx)
4219 break;
4220
4221 nt_ddb_idx->fw_ddb_idx = idx;
4222
4223 memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
4224 sizeof(struct dev_db_entry));
4225
4226 if (qla4xxx_is_flash_ddb_exists(ha, list_nt,
4227 fw_ddb_entry) == QLA_SUCCESS) {
4228 vfree(nt_ddb_idx);
4229 goto continue_next_nt;
4230 }
4231 list_add_tail(&nt_ddb_idx->list, list_nt);
4232 } else if (is_reset == RESET_ADAPTER) {
4233 if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
4234 QLA_SUCCESS)
4235 goto continue_next_nt;
4236 }
4237
4238 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
4239 if (ret == QLA_ERROR)
4240 goto exit_nt_list;
4241
4242 continue_next_nt:
4243 if (next_idx == 0)
4244 break;
4245 }
4246
4247 exit_nt_list:
4248 if (fw_ddb_entry)
4249 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4250 }
4251
4252 /**
4253 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
4254 * @ha: pointer to adapter structure
4255 * @is_reset: Is this init path or reset path
4256 *
4257 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
4258 * using connection open, then create the list of normal targets (nt)
4259 * from firmware DDBs. Based on the list of nt setup session and connection
4260 * objects.
4261 **/
4262 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
4263 {
4264 uint16_t tmo = 0;
4265 struct list_head list_st, list_nt;
4266 struct qla_ddb_index *st_ddb_idx, *st_ddb_idx_tmp;
4267 unsigned long wtime;
4268
4269 if (!test_bit(AF_LINK_UP, &ha->flags)) {
4270 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
4271 ha->is_reset = is_reset;
4272 return;
4273 }
4274
4275 INIT_LIST_HEAD(&list_st);
4276 INIT_LIST_HEAD(&list_nt);
4277
4278 qla4xxx_build_st_list(ha, &list_st);
4279
4280 /* Before issuing conn open mbox, ensure all IPs states are configured
4281 * Note, conn open fails if IPs are not configured
4282 */
4283 qla4xxx_wait_for_ip_configuration(ha);
4284
4285 /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
4286 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
4287 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
4288 }
4289
4290 /* Wait to ensure all sendtargets are done for min 12 sec wait */
4291 tmo = ((ha->def_timeout > LOGIN_TOV) &&
4292 (ha->def_timeout < LOGIN_TOV * 10) ?
4293 ha->def_timeout : LOGIN_TOV);
4294
4295 DEBUG2(ql4_printk(KERN_INFO, ha,
4296 "Default time to wait for build ddb %d\n", tmo));
4297
4298 wtime = jiffies + (HZ * tmo);
4299 do {
4300 if (list_empty(&list_st))
4301 break;
4302
4303 qla4xxx_remove_failed_ddb(ha, &list_st);
4304 schedule_timeout_uninterruptible(HZ / 10);
4305 } while (time_after(wtime, jiffies));
4306
4307 /* Free up the sendtargets list */
4308 qla4xxx_free_ddb_list(&list_st);
4309
4310 qla4xxx_build_nt_list(ha, &list_nt, is_reset);
4311
4312 qla4xxx_free_ddb_list(&list_nt);
4313
4314 qla4xxx_free_ddb_index(ha);
4315 }
4316
4317 /**
4318 * qla4xxx_probe_adapter - callback function to probe HBA
4319 * @pdev: pointer to pci_dev structure
4320 * @pci_device_id: pointer to pci_device entry
4321 *
4322 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
4323 * It returns zero if successful. It also initializes all data necessary for
4324 * the driver.
4325 **/
4326 static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
4327 const struct pci_device_id *ent)
4328 {
4329 int ret = -ENODEV, status;
4330 struct Scsi_Host *host;
4331 struct scsi_qla_host *ha;
4332 uint8_t init_retry_count = 0;
4333 char buf[34];
4334 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
4335 uint32_t dev_state;
4336
4337 if (pci_enable_device(pdev))
4338 return -1;
4339
4340 host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
4341 if (host == NULL) {
4342 printk(KERN_WARNING
4343 "qla4xxx: Couldn't allocate host from scsi layer!\n");
4344 goto probe_disable_device;
4345 }
4346
4347 /* Clear our data area */
4348 ha = to_qla_host(host);
4349 memset(ha, 0, sizeof(*ha));
4350
4351 /* Save the information from PCI BIOS. */
4352 ha->pdev = pdev;
4353 ha->host = host;
4354 ha->host_no = host->host_no;
4355
4356 pci_enable_pcie_error_reporting(pdev);
4357
4358 /* Setup Runtime configurable options */
4359 if (is_qla8022(ha)) {
4360 ha->isp_ops = &qla4_8xxx_isp_ops;
4361 rwlock_init(&ha->hw_lock);
4362 ha->qdr_sn_window = -1;
4363 ha->ddr_mn_window = -1;
4364 ha->curr_window = 255;
4365 ha->func_num = PCI_FUNC(ha->pdev->devfn);
4366 nx_legacy_intr = &legacy_intr[ha->func_num];
4367 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
4368 ha->nx_legacy_intr.tgt_status_reg =
4369 nx_legacy_intr->tgt_status_reg;
4370 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
4371 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
4372 } else {
4373 ha->isp_ops = &qla4xxx_isp_ops;
4374 }
4375
4376 /* Set EEH reset type to fundamental if required by hba */
4377 if (is_qla8022(ha))
4378 pdev->needs_freset = 1;
4379
4380 /* Configure PCI I/O space. */
4381 ret = ha->isp_ops->iospace_config(ha);
4382 if (ret)
4383 goto probe_failed_ioconfig;
4384
4385 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
4386 pdev->device, pdev->irq, ha->reg);
4387
4388 qla4xxx_config_dma_addressing(ha);
4389
4390 /* Initialize lists and spinlocks. */
4391 INIT_LIST_HEAD(&ha->free_srb_q);
4392
4393 mutex_init(&ha->mbox_sem);
4394 mutex_init(&ha->chap_sem);
4395 init_completion(&ha->mbx_intr_comp);
4396 init_completion(&ha->disable_acb_comp);
4397
4398 spin_lock_init(&ha->hardware_lock);
4399
4400 /* Allocate dma buffers */
4401 if (qla4xxx_mem_alloc(ha)) {
4402 ql4_printk(KERN_WARNING, ha,
4403 "[ERROR] Failed to allocate memory for adapter\n");
4404
4405 ret = -ENOMEM;
4406 goto probe_failed;
4407 }
4408
4409 host->cmd_per_lun = 3;
4410 host->max_channel = 0;
4411 host->max_lun = MAX_LUNS - 1;
4412 host->max_id = MAX_TARGETS;
4413 host->max_cmd_len = IOCB_MAX_CDB_LEN;
4414 host->can_queue = MAX_SRBS ;
4415 host->transportt = qla4xxx_scsi_transport;
4416
4417 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
4418 if (ret) {
4419 ql4_printk(KERN_WARNING, ha,
4420 "%s: scsi_init_shared_tag_map failed\n", __func__);
4421 goto probe_failed;
4422 }
4423
4424 pci_set_drvdata(pdev, ha);
4425
4426 ret = scsi_add_host(host, &pdev->dev);
4427 if (ret)
4428 goto probe_failed;
4429
4430 if (is_qla8022(ha))
4431 (void) qla4_8xxx_get_flash_info(ha);
4432
4433 /*
4434 * Initialize the Host adapter request/response queues and
4435 * firmware
4436 * NOTE: interrupts enabled upon successful completion
4437 */
4438 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
4439 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
4440 init_retry_count++ < MAX_INIT_RETRIES) {
4441
4442 if (is_qla8022(ha)) {
4443 qla4_8xxx_idc_lock(ha);
4444 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
4445 qla4_8xxx_idc_unlock(ha);
4446 if (dev_state == QLA82XX_DEV_FAILED) {
4447 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
4448 "initialize adapter. H/W is in failed state\n",
4449 __func__);
4450 break;
4451 }
4452 }
4453 DEBUG2(printk("scsi: %s: retrying adapter initialization "
4454 "(%d)\n", __func__, init_retry_count));
4455
4456 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
4457 continue;
4458
4459 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
4460 }
4461
4462 if (!test_bit(AF_ONLINE, &ha->flags)) {
4463 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
4464
4465 if (is_qla8022(ha) && ql4xdontresethba) {
4466 /* Put the device in failed state. */
4467 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
4468 qla4_8xxx_idc_lock(ha);
4469 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
4470 QLA82XX_DEV_FAILED);
4471 qla4_8xxx_idc_unlock(ha);
4472 }
4473 ret = -ENODEV;
4474 goto remove_host;
4475 }
4476
4477 /* Startup the kernel thread for this host adapter. */
4478 DEBUG2(printk("scsi: %s: Starting kernel thread for "
4479 "qla4xxx_dpc\n", __func__));
4480 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
4481 ha->dpc_thread = create_singlethread_workqueue(buf);
4482 if (!ha->dpc_thread) {
4483 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
4484 ret = -ENODEV;
4485 goto remove_host;
4486 }
4487 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
4488
4489 sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
4490 ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
4491 if (!ha->task_wq) {
4492 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
4493 ret = -ENODEV;
4494 goto remove_host;
4495 }
4496
4497 /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
4498 * (which is called indirectly by qla4xxx_initialize_adapter),
4499 * so that irqs will be registered after crbinit but before
4500 * mbx_intr_enable.
4501 */
4502 if (!is_qla8022(ha)) {
4503 ret = qla4xxx_request_irqs(ha);
4504 if (ret) {
4505 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
4506 "interrupt %d already in use.\n", pdev->irq);
4507 goto remove_host;
4508 }
4509 }
4510
4511 pci_save_state(ha->pdev);
4512 ha->isp_ops->enable_intrs(ha);
4513
4514 /* Start timer thread. */
4515 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
4516
4517 set_bit(AF_INIT_DONE, &ha->flags);
4518
4519 printk(KERN_INFO
4520 " QLogic iSCSI HBA Driver version: %s\n"
4521 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
4522 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
4523 ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
4524 ha->patch_number, ha->build_number);
4525
4526 if (qla4xxx_setup_boot_info(ha))
4527 ql4_printk(KERN_ERR, ha, "%s:ISCSI boot info setup failed\n",
4528 __func__);
4529
4530 /* Perform the build ddb list and login to each */
4531 qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
4532 iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
4533
4534 qla4xxx_create_chap_list(ha);
4535
4536 qla4xxx_create_ifaces(ha);
4537 return 0;
4538
4539 remove_host:
4540 scsi_remove_host(ha->host);
4541
4542 probe_failed:
4543 qla4xxx_free_adapter(ha);
4544
4545 probe_failed_ioconfig:
4546 pci_disable_pcie_error_reporting(pdev);
4547 scsi_host_put(ha->host);
4548
4549 probe_disable_device:
4550 pci_disable_device(pdev);
4551
4552 return ret;
4553 }
4554
4555 /**
4556 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
4557 * @ha: pointer to adapter structure
4558 *
4559 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
4560 * so that the other port will not re-initialize while in the process of
4561 * removing the ha due to driver unload or hba hotplug.
4562 **/
4563 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
4564 {
4565 struct scsi_qla_host *other_ha = NULL;
4566 struct pci_dev *other_pdev = NULL;
4567 int fn = ISP4XXX_PCI_FN_2;
4568
4569 /*iscsi function numbers for ISP4xxx is 1 and 3*/
4570 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
4571 fn = ISP4XXX_PCI_FN_1;
4572
4573 other_pdev =
4574 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
4575 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
4576 fn));
4577
4578 /* Get other_ha if other_pdev is valid and state is enable*/
4579 if (other_pdev) {
4580 if (atomic_read(&other_pdev->enable_cnt)) {
4581 other_ha = pci_get_drvdata(other_pdev);
4582 if (other_ha) {
4583 set_bit(AF_HA_REMOVAL, &other_ha->flags);
4584 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
4585 "Prevent %s reinit\n", __func__,
4586 dev_name(&other_ha->pdev->dev)));
4587 }
4588 }
4589 pci_dev_put(other_pdev);
4590 }
4591 }
4592
4593 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
4594 {
4595 struct ddb_entry *ddb_entry;
4596 int options;
4597 int idx;
4598
4599 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4600
4601 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4602 if ((ddb_entry != NULL) &&
4603 (ddb_entry->ddb_type == FLASH_DDB)) {
4604
4605 options = LOGOUT_OPTION_CLOSE_SESSION;
4606 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
4607 == QLA_ERROR)
4608 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
4609 __func__);
4610
4611 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
4612 /*
4613 * we have decremented the reference count of the driver
4614 * when we setup the session to have the driver unload
4615 * to be seamless without actually destroying the
4616 * session
4617 **/
4618 try_module_get(qla4xxx_iscsi_transport.owner);
4619 iscsi_destroy_endpoint(ddb_entry->conn->ep);
4620 qla4xxx_free_ddb(ha, ddb_entry);
4621 iscsi_session_teardown(ddb_entry->sess);
4622 }
4623 }
4624 }
4625 /**
4626 * qla4xxx_remove_adapter - calback function to remove adapter.
4627 * @pci_dev: PCI device pointer
4628 **/
4629 static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
4630 {
4631 struct scsi_qla_host *ha;
4632
4633 ha = pci_get_drvdata(pdev);
4634
4635 if (!is_qla8022(ha))
4636 qla4xxx_prevent_other_port_reinit(ha);
4637
4638 /* destroy iface from sysfs */
4639 qla4xxx_destroy_ifaces(ha);
4640
4641 if ((!ql4xdisablesysfsboot) && ha->boot_kset)
4642 iscsi_boot_destroy_kset(ha->boot_kset);
4643
4644 qla4xxx_destroy_fw_ddb_session(ha);
4645
4646 scsi_remove_host(ha->host);
4647
4648 qla4xxx_free_adapter(ha);
4649
4650 scsi_host_put(ha->host);
4651
4652 pci_disable_pcie_error_reporting(pdev);
4653 pci_disable_device(pdev);
4654 pci_set_drvdata(pdev, NULL);
4655 }
4656
4657 /**
4658 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
4659 * @ha: HA context
4660 *
4661 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
4662 * supported addressing method.
4663 */
4664 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
4665 {
4666 int retval;
4667
4668 /* Update our PCI device dma_mask for full 64 bit mask */
4669 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
4670 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
4671 dev_dbg(&ha->pdev->dev,
4672 "Failed to set 64 bit PCI consistent mask; "
4673 "using 32 bit.\n");
4674 retval = pci_set_consistent_dma_mask(ha->pdev,
4675 DMA_BIT_MASK(32));
4676 }
4677 } else
4678 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
4679 }
4680
4681 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
4682 {
4683 struct iscsi_cls_session *cls_sess;
4684 struct iscsi_session *sess;
4685 struct ddb_entry *ddb;
4686 int queue_depth = QL4_DEF_QDEPTH;
4687
4688 cls_sess = starget_to_session(sdev->sdev_target);
4689 sess = cls_sess->dd_data;
4690 ddb = sess->dd_data;
4691
4692 sdev->hostdata = ddb;
4693 sdev->tagged_supported = 1;
4694
4695 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
4696 queue_depth = ql4xmaxqdepth;
4697
4698 scsi_activate_tcq(sdev, queue_depth);
4699 return 0;
4700 }
4701
4702 static int qla4xxx_slave_configure(struct scsi_device *sdev)
4703 {
4704 sdev->tagged_supported = 1;
4705 return 0;
4706 }
4707
4708 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
4709 {
4710 scsi_deactivate_tcq(sdev, 1);
4711 }
4712
4713 /**
4714 * qla4xxx_del_from_active_array - returns an active srb
4715 * @ha: Pointer to host adapter structure.
4716 * @index: index into the active_array
4717 *
4718 * This routine removes and returns the srb at the specified index
4719 **/
4720 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
4721 uint32_t index)
4722 {
4723 struct srb *srb = NULL;
4724 struct scsi_cmnd *cmd = NULL;
4725
4726 cmd = scsi_host_find_tag(ha->host, index);
4727 if (!cmd)
4728 return srb;
4729
4730 srb = (struct srb *)CMD_SP(cmd);
4731 if (!srb)
4732 return srb;
4733
4734 /* update counters */
4735 if (srb->flags & SRB_DMA_VALID) {
4736 ha->req_q_count += srb->iocb_cnt;
4737 ha->iocb_cnt -= srb->iocb_cnt;
4738 if (srb->cmd)
4739 srb->cmd->host_scribble =
4740 (unsigned char *)(unsigned long) MAX_SRBS;
4741 }
4742 return srb;
4743 }
4744
4745 /**
4746 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
4747 * @ha: Pointer to host adapter structure.
4748 * @cmd: Scsi Command to wait on.
4749 *
4750 * This routine waits for the command to be returned by the Firmware
4751 * for some max time.
4752 **/
4753 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
4754 struct scsi_cmnd *cmd)
4755 {
4756 int done = 0;
4757 struct srb *rp;
4758 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
4759 int ret = SUCCESS;
4760
4761 /* Dont wait on command if PCI error is being handled
4762 * by PCI AER driver
4763 */
4764 if (unlikely(pci_channel_offline(ha->pdev)) ||
4765 (test_bit(AF_EEH_BUSY, &ha->flags))) {
4766 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
4767 ha->host_no, __func__);
4768 return ret;
4769 }
4770
4771 do {
4772 /* Checking to see if its returned to OS */
4773 rp = (struct srb *) CMD_SP(cmd);
4774 if (rp == NULL) {
4775 done++;
4776 break;
4777 }
4778
4779 msleep(2000);
4780 } while (max_wait_time--);
4781
4782 return done;
4783 }
4784
4785 /**
4786 * qla4xxx_wait_for_hba_online - waits for HBA to come online
4787 * @ha: Pointer to host adapter structure
4788 **/
4789 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
4790 {
4791 unsigned long wait_online;
4792
4793 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
4794 while (time_before(jiffies, wait_online)) {
4795
4796 if (adapter_up(ha))
4797 return QLA_SUCCESS;
4798
4799 msleep(2000);
4800 }
4801
4802 return QLA_ERROR;
4803 }
4804
4805 /**
4806 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
4807 * @ha: pointer to HBA
4808 * @t: target id
4809 * @l: lun id
4810 *
4811 * This function waits for all outstanding commands to a lun to complete. It
4812 * returns 0 if all pending commands are returned and 1 otherwise.
4813 **/
4814 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
4815 struct scsi_target *stgt,
4816 struct scsi_device *sdev)
4817 {
4818 int cnt;
4819 int status = 0;
4820 struct scsi_cmnd *cmd;
4821
4822 /*
4823 * Waiting for all commands for the designated target or dev
4824 * in the active array
4825 */
4826 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
4827 cmd = scsi_host_find_tag(ha->host, cnt);
4828 if (cmd && stgt == scsi_target(cmd->device) &&
4829 (!sdev || sdev == cmd->device)) {
4830 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
4831 status++;
4832 break;
4833 }
4834 }
4835 }
4836 return status;
4837 }
4838
4839 /**
4840 * qla4xxx_eh_abort - callback for abort task.
4841 * @cmd: Pointer to Linux's SCSI command structure
4842 *
4843 * This routine is called by the Linux OS to abort the specified
4844 * command.
4845 **/
4846 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
4847 {
4848 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
4849 unsigned int id = cmd->device->id;
4850 unsigned int lun = cmd->device->lun;
4851 unsigned long flags;
4852 struct srb *srb = NULL;
4853 int ret = SUCCESS;
4854 int wait = 0;
4855
4856 ql4_printk(KERN_INFO, ha,
4857 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
4858 ha->host_no, id, lun, cmd);
4859
4860 spin_lock_irqsave(&ha->hardware_lock, flags);
4861 srb = (struct srb *) CMD_SP(cmd);
4862 if (!srb) {
4863 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4864 return SUCCESS;
4865 }
4866 kref_get(&srb->srb_ref);
4867 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4868
4869 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
4870 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
4871 ha->host_no, id, lun));
4872 ret = FAILED;
4873 } else {
4874 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
4875 ha->host_no, id, lun));
4876 wait = 1;
4877 }
4878
4879 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4880
4881 /* Wait for command to complete */
4882 if (wait) {
4883 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
4884 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
4885 ha->host_no, id, lun));
4886 ret = FAILED;
4887 }
4888 }
4889
4890 ql4_printk(KERN_INFO, ha,
4891 "scsi%ld:%d:%d: Abort command - %s\n",
4892 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
4893
4894 return ret;
4895 }
4896
4897 /**
4898 * qla4xxx_eh_device_reset - callback for target reset.
4899 * @cmd: Pointer to Linux's SCSI command structure
4900 *
4901 * This routine is called by the Linux OS to reset all luns on the
4902 * specified target.
4903 **/
4904 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
4905 {
4906 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
4907 struct ddb_entry *ddb_entry = cmd->device->hostdata;
4908 int ret = FAILED, stat;
4909
4910 if (!ddb_entry)
4911 return ret;
4912
4913 ret = iscsi_block_scsi_eh(cmd);
4914 if (ret)
4915 return ret;
4916 ret = FAILED;
4917
4918 ql4_printk(KERN_INFO, ha,
4919 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
4920 cmd->device->channel, cmd->device->id, cmd->device->lun);
4921
4922 DEBUG2(printk(KERN_INFO
4923 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
4924 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
4925 cmd, jiffies, cmd->request->timeout / HZ,
4926 ha->dpc_flags, cmd->result, cmd->allowed));
4927
4928 /* FIXME: wait for hba to go online */
4929 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
4930 if (stat != QLA_SUCCESS) {
4931 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
4932 goto eh_dev_reset_done;
4933 }
4934
4935 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
4936 cmd->device)) {
4937 ql4_printk(KERN_INFO, ha,
4938 "DEVICE RESET FAILED - waiting for "
4939 "commands.\n");
4940 goto eh_dev_reset_done;
4941 }
4942
4943 /* Send marker. */
4944 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
4945 MM_LUN_RESET) != QLA_SUCCESS)
4946 goto eh_dev_reset_done;
4947
4948 ql4_printk(KERN_INFO, ha,
4949 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
4950 ha->host_no, cmd->device->channel, cmd->device->id,
4951 cmd->device->lun);
4952
4953 ret = SUCCESS;
4954
4955 eh_dev_reset_done:
4956
4957 return ret;
4958 }
4959
4960 /**
4961 * qla4xxx_eh_target_reset - callback for target reset.
4962 * @cmd: Pointer to Linux's SCSI command structure
4963 *
4964 * This routine is called by the Linux OS to reset the target.
4965 **/
4966 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
4967 {
4968 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
4969 struct ddb_entry *ddb_entry = cmd->device->hostdata;
4970 int stat, ret;
4971
4972 if (!ddb_entry)
4973 return FAILED;
4974
4975 ret = iscsi_block_scsi_eh(cmd);
4976 if (ret)
4977 return ret;
4978
4979 starget_printk(KERN_INFO, scsi_target(cmd->device),
4980 "WARM TARGET RESET ISSUED.\n");
4981
4982 DEBUG2(printk(KERN_INFO
4983 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
4984 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
4985 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
4986 ha->dpc_flags, cmd->result, cmd->allowed));
4987
4988 stat = qla4xxx_reset_target(ha, ddb_entry);
4989 if (stat != QLA_SUCCESS) {
4990 starget_printk(KERN_INFO, scsi_target(cmd->device),
4991 "WARM TARGET RESET FAILED.\n");
4992 return FAILED;
4993 }
4994
4995 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
4996 NULL)) {
4997 starget_printk(KERN_INFO, scsi_target(cmd->device),
4998 "WARM TARGET DEVICE RESET FAILED - "
4999 "waiting for commands.\n");
5000 return FAILED;
5001 }
5002
5003 /* Send marker. */
5004 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5005 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5006 starget_printk(KERN_INFO, scsi_target(cmd->device),
5007 "WARM TARGET DEVICE RESET FAILED - "
5008 "marker iocb failed.\n");
5009 return FAILED;
5010 }
5011
5012 starget_printk(KERN_INFO, scsi_target(cmd->device),
5013 "WARM TARGET RESET SUCCEEDED.\n");
5014 return SUCCESS;
5015 }
5016
5017 /**
5018 * qla4xxx_is_eh_active - check if error handler is running
5019 * @shost: Pointer to SCSI Host struct
5020 *
5021 * This routine finds that if reset host is called in EH
5022 * scenario or from some application like sg_reset
5023 **/
5024 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5025 {
5026 if (shost->shost_state == SHOST_RECOVERY)
5027 return 1;
5028 return 0;
5029 }
5030
5031 /**
5032 * qla4xxx_eh_host_reset - kernel callback
5033 * @cmd: Pointer to Linux's SCSI command structure
5034 *
5035 * This routine is invoked by the Linux kernel to perform fatal error
5036 * recovery on the specified adapter.
5037 **/
5038 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
5039 {
5040 int return_status = FAILED;
5041 struct scsi_qla_host *ha;
5042
5043 ha = to_qla_host(cmd->device->host);
5044
5045 if (ql4xdontresethba) {
5046 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5047 ha->host_no, __func__));
5048
5049 /* Clear outstanding srb in queues */
5050 if (qla4xxx_is_eh_active(cmd->device->host))
5051 qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
5052
5053 return FAILED;
5054 }
5055
5056 ql4_printk(KERN_INFO, ha,
5057 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
5058 cmd->device->channel, cmd->device->id, cmd->device->lun);
5059
5060 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
5061 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
5062 "DEAD.\n", ha->host_no, cmd->device->channel,
5063 __func__));
5064
5065 return FAILED;
5066 }
5067
5068 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5069 if (is_qla8022(ha))
5070 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5071 else
5072 set_bit(DPC_RESET_HA, &ha->dpc_flags);
5073 }
5074
5075 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
5076 return_status = SUCCESS;
5077
5078 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
5079 return_status == FAILED ? "FAILED" : "SUCCEEDED");
5080
5081 return return_status;
5082 }
5083
5084 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
5085 {
5086 uint32_t mbox_cmd[MBOX_REG_COUNT];
5087 uint32_t mbox_sts[MBOX_REG_COUNT];
5088 struct addr_ctrl_blk_def *acb = NULL;
5089 uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
5090 int rval = QLA_SUCCESS;
5091 dma_addr_t acb_dma;
5092
5093 acb = dma_alloc_coherent(&ha->pdev->dev,
5094 sizeof(struct addr_ctrl_blk_def),
5095 &acb_dma, GFP_KERNEL);
5096 if (!acb) {
5097 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
5098 __func__);
5099 rval = -ENOMEM;
5100 goto exit_port_reset;
5101 }
5102
5103 memset(acb, 0, acb_len);
5104
5105 rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
5106 if (rval != QLA_SUCCESS) {
5107 rval = -EIO;
5108 goto exit_free_acb;
5109 }
5110
5111 rval = qla4xxx_disable_acb(ha);
5112 if (rval != QLA_SUCCESS) {
5113 rval = -EIO;
5114 goto exit_free_acb;
5115 }
5116
5117 wait_for_completion_timeout(&ha->disable_acb_comp,
5118 DISABLE_ACB_TOV * HZ);
5119
5120 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
5121 if (rval != QLA_SUCCESS) {
5122 rval = -EIO;
5123 goto exit_free_acb;
5124 }
5125
5126 exit_free_acb:
5127 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
5128 acb, acb_dma);
5129 exit_port_reset:
5130 DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
5131 rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
5132 return rval;
5133 }
5134
5135 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
5136 {
5137 struct scsi_qla_host *ha = to_qla_host(shost);
5138 int rval = QLA_SUCCESS;
5139
5140 if (ql4xdontresethba) {
5141 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
5142 __func__));
5143 rval = -EPERM;
5144 goto exit_host_reset;
5145 }
5146
5147 rval = qla4xxx_wait_for_hba_online(ha);
5148 if (rval != QLA_SUCCESS) {
5149 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
5150 "adapter\n", __func__));
5151 rval = -EIO;
5152 goto exit_host_reset;
5153 }
5154
5155 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
5156 goto recover_adapter;
5157
5158 switch (reset_type) {
5159 case SCSI_ADAPTER_RESET:
5160 set_bit(DPC_RESET_HA, &ha->dpc_flags);
5161 break;
5162 case SCSI_FIRMWARE_RESET:
5163 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5164 if (is_qla8022(ha))
5165 /* set firmware context reset */
5166 set_bit(DPC_RESET_HA_FW_CONTEXT,
5167 &ha->dpc_flags);
5168 else {
5169 rval = qla4xxx_context_reset(ha);
5170 goto exit_host_reset;
5171 }
5172 }
5173 break;
5174 }
5175
5176 recover_adapter:
5177 rval = qla4xxx_recover_adapter(ha);
5178 if (rval != QLA_SUCCESS) {
5179 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
5180 __func__));
5181 rval = -EIO;
5182 }
5183
5184 exit_host_reset:
5185 return rval;
5186 }
5187
5188 /* PCI AER driver recovers from all correctable errors w/o
5189 * driver intervention. For uncorrectable errors PCI AER
5190 * driver calls the following device driver's callbacks
5191 *
5192 * - Fatal Errors - link_reset
5193 * - Non-Fatal Errors - driver's pci_error_detected() which
5194 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
5195 *
5196 * PCI AER driver calls
5197 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
5198 * returns RECOVERED or NEED_RESET if fw_hung
5199 * NEED_RESET - driver's slot_reset()
5200 * DISCONNECT - device is dead & cannot recover
5201 * RECOVERED - driver's pci_resume()
5202 */
5203 static pci_ers_result_t
5204 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
5205 {
5206 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5207
5208 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
5209 ha->host_no, __func__, state);
5210
5211 if (!is_aer_supported(ha))
5212 return PCI_ERS_RESULT_NONE;
5213
5214 switch (state) {
5215 case pci_channel_io_normal:
5216 clear_bit(AF_EEH_BUSY, &ha->flags);
5217 return PCI_ERS_RESULT_CAN_RECOVER;
5218 case pci_channel_io_frozen:
5219 set_bit(AF_EEH_BUSY, &ha->flags);
5220 qla4xxx_mailbox_premature_completion(ha);
5221 qla4xxx_free_irqs(ha);
5222 pci_disable_device(pdev);
5223 /* Return back all IOs */
5224 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5225 return PCI_ERS_RESULT_NEED_RESET;
5226 case pci_channel_io_perm_failure:
5227 set_bit(AF_EEH_BUSY, &ha->flags);
5228 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
5229 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5230 return PCI_ERS_RESULT_DISCONNECT;
5231 }
5232 return PCI_ERS_RESULT_NEED_RESET;
5233 }
5234
5235 /**
5236 * qla4xxx_pci_mmio_enabled() gets called if
5237 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
5238 * and read/write to the device still works.
5239 **/
5240 static pci_ers_result_t
5241 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
5242 {
5243 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5244
5245 if (!is_aer_supported(ha))
5246 return PCI_ERS_RESULT_NONE;
5247
5248 return PCI_ERS_RESULT_RECOVERED;
5249 }
5250
5251 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
5252 {
5253 uint32_t rval = QLA_ERROR;
5254 uint32_t ret = 0;
5255 int fn;
5256 struct pci_dev *other_pdev = NULL;
5257
5258 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
5259
5260 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5261
5262 if (test_bit(AF_ONLINE, &ha->flags)) {
5263 clear_bit(AF_ONLINE, &ha->flags);
5264 clear_bit(AF_LINK_UP, &ha->flags);
5265 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
5266 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5267 }
5268
5269 fn = PCI_FUNC(ha->pdev->devfn);
5270 while (fn > 0) {
5271 fn--;
5272 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
5273 "func %x\n", ha->host_no, __func__, fn);
5274 /* Get the pci device given the domain, bus,
5275 * slot/function number */
5276 other_pdev =
5277 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5278 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5279 fn));
5280
5281 if (!other_pdev)
5282 continue;
5283
5284 if (atomic_read(&other_pdev->enable_cnt)) {
5285 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
5286 "func in enabled state%x\n", ha->host_no,
5287 __func__, fn);
5288 pci_dev_put(other_pdev);
5289 break;
5290 }
5291 pci_dev_put(other_pdev);
5292 }
5293
5294 /* The first function on the card, the reset owner will
5295 * start & initialize the firmware. The other functions
5296 * on the card will reset the firmware context
5297 */
5298 if (!fn) {
5299 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
5300 "0x%x is the owner\n", ha->host_no, __func__,
5301 ha->pdev->devfn);
5302
5303 qla4_8xxx_idc_lock(ha);
5304 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5305 QLA82XX_DEV_COLD);
5306
5307 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
5308 QLA82XX_IDC_VERSION);
5309
5310 qla4_8xxx_idc_unlock(ha);
5311 clear_bit(AF_FW_RECOVERY, &ha->flags);
5312 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
5313 qla4_8xxx_idc_lock(ha);
5314
5315 if (rval != QLA_SUCCESS) {
5316 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
5317 "FAILED\n", ha->host_no, __func__);
5318 qla4_8xxx_clear_drv_active(ha);
5319 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5320 QLA82XX_DEV_FAILED);
5321 } else {
5322 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
5323 "READY\n", ha->host_no, __func__);
5324 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5325 QLA82XX_DEV_READY);
5326 /* Clear driver state register */
5327 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
5328 qla4_8xxx_set_drv_active(ha);
5329 ret = qla4xxx_request_irqs(ha);
5330 if (ret) {
5331 ql4_printk(KERN_WARNING, ha, "Failed to "
5332 "reserve interrupt %d already in use.\n",
5333 ha->pdev->irq);
5334 rval = QLA_ERROR;
5335 } else {
5336 ha->isp_ops->enable_intrs(ha);
5337 rval = QLA_SUCCESS;
5338 }
5339 }
5340 qla4_8xxx_idc_unlock(ha);
5341 } else {
5342 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
5343 "the reset owner\n", ha->host_no, __func__,
5344 ha->pdev->devfn);
5345 if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
5346 QLA82XX_DEV_READY)) {
5347 clear_bit(AF_FW_RECOVERY, &ha->flags);
5348 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
5349 if (rval == QLA_SUCCESS) {
5350 ret = qla4xxx_request_irqs(ha);
5351 if (ret) {
5352 ql4_printk(KERN_WARNING, ha, "Failed to"
5353 " reserve interrupt %d already in"
5354 " use.\n", ha->pdev->irq);
5355 rval = QLA_ERROR;
5356 } else {
5357 ha->isp_ops->enable_intrs(ha);
5358 rval = QLA_SUCCESS;
5359 }
5360 }
5361 qla4_8xxx_idc_lock(ha);
5362 qla4_8xxx_set_drv_active(ha);
5363 qla4_8xxx_idc_unlock(ha);
5364 }
5365 }
5366 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5367 return rval;
5368 }
5369
5370 static pci_ers_result_t
5371 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
5372 {
5373 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
5374 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5375 int rc;
5376
5377 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
5378 ha->host_no, __func__);
5379
5380 if (!is_aer_supported(ha))
5381 return PCI_ERS_RESULT_NONE;
5382
5383 /* Restore the saved state of PCIe device -
5384 * BAR registers, PCI Config space, PCIX, MSI,
5385 * IOV states
5386 */
5387 pci_restore_state(pdev);
5388
5389 /* pci_restore_state() clears the saved_state flag of the device
5390 * save restored state which resets saved_state flag
5391 */
5392 pci_save_state(pdev);
5393
5394 /* Initialize device or resume if in suspended state */
5395 rc = pci_enable_device(pdev);
5396 if (rc) {
5397 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
5398 "device after reset\n", ha->host_no, __func__);
5399 goto exit_slot_reset;
5400 }
5401
5402 ha->isp_ops->disable_intrs(ha);
5403
5404 if (is_qla8022(ha)) {
5405 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
5406 ret = PCI_ERS_RESULT_RECOVERED;
5407 goto exit_slot_reset;
5408 } else
5409 goto exit_slot_reset;
5410 }
5411
5412 exit_slot_reset:
5413 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
5414 "device after reset\n", ha->host_no, __func__, ret);
5415 return ret;
5416 }
5417
5418 static void
5419 qla4xxx_pci_resume(struct pci_dev *pdev)
5420 {
5421 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5422 int ret;
5423
5424 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
5425 ha->host_no, __func__);
5426
5427 ret = qla4xxx_wait_for_hba_online(ha);
5428 if (ret != QLA_SUCCESS) {
5429 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
5430 "resume I/O from slot/link_reset\n", ha->host_no,
5431 __func__);
5432 }
5433
5434 pci_cleanup_aer_uncorrect_error_status(pdev);
5435 clear_bit(AF_EEH_BUSY, &ha->flags);
5436 }
5437
5438 static struct pci_error_handlers qla4xxx_err_handler = {
5439 .error_detected = qla4xxx_pci_error_detected,
5440 .mmio_enabled = qla4xxx_pci_mmio_enabled,
5441 .slot_reset = qla4xxx_pci_slot_reset,
5442 .resume = qla4xxx_pci_resume,
5443 };
5444
5445 static struct pci_device_id qla4xxx_pci_tbl[] = {
5446 {
5447 .vendor = PCI_VENDOR_ID_QLOGIC,
5448 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
5449 .subvendor = PCI_ANY_ID,
5450 .subdevice = PCI_ANY_ID,
5451 },
5452 {
5453 .vendor = PCI_VENDOR_ID_QLOGIC,
5454 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
5455 .subvendor = PCI_ANY_ID,
5456 .subdevice = PCI_ANY_ID,
5457 },
5458 {
5459 .vendor = PCI_VENDOR_ID_QLOGIC,
5460 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
5461 .subvendor = PCI_ANY_ID,
5462 .subdevice = PCI_ANY_ID,
5463 },
5464 {
5465 .vendor = PCI_VENDOR_ID_QLOGIC,
5466 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
5467 .subvendor = PCI_ANY_ID,
5468 .subdevice = PCI_ANY_ID,
5469 },
5470 {0, 0},
5471 };
5472 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
5473
5474 static struct pci_driver qla4xxx_pci_driver = {
5475 .name = DRIVER_NAME,
5476 .id_table = qla4xxx_pci_tbl,
5477 .probe = qla4xxx_probe_adapter,
5478 .remove = qla4xxx_remove_adapter,
5479 .err_handler = &qla4xxx_err_handler,
5480 };
5481
5482 static int __init qla4xxx_module_init(void)
5483 {
5484 int ret;
5485
5486 /* Allocate cache for SRBs. */
5487 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
5488 SLAB_HWCACHE_ALIGN, NULL);
5489 if (srb_cachep == NULL) {
5490 printk(KERN_ERR
5491 "%s: Unable to allocate SRB cache..."
5492 "Failing load!\n", DRIVER_NAME);
5493 ret = -ENOMEM;
5494 goto no_srp_cache;
5495 }
5496
5497 /* Derive version string. */
5498 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
5499 if (ql4xextended_error_logging)
5500 strcat(qla4xxx_version_str, "-debug");
5501
5502 qla4xxx_scsi_transport =
5503 iscsi_register_transport(&qla4xxx_iscsi_transport);
5504 if (!qla4xxx_scsi_transport){
5505 ret = -ENODEV;
5506 goto release_srb_cache;
5507 }
5508
5509 ret = pci_register_driver(&qla4xxx_pci_driver);
5510 if (ret)
5511 goto unregister_transport;
5512
5513 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
5514 return 0;
5515
5516 unregister_transport:
5517 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
5518 release_srb_cache:
5519 kmem_cache_destroy(srb_cachep);
5520 no_srp_cache:
5521 return ret;
5522 }
5523
5524 static void __exit qla4xxx_module_exit(void)
5525 {
5526 pci_unregister_driver(&qla4xxx_pci_driver);
5527 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
5528 kmem_cache_destroy(srb_cachep);
5529 }
5530
5531 module_init(qla4xxx_module_init);
5532 module_exit(qla4xxx_module_exit);
5533
5534 MODULE_AUTHOR("QLogic Corporation");
5535 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
5536 MODULE_LICENSE("GPL");
5537 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);