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ARM: at91: fix board-rm9200-dt after sys_timer conversion
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / qla4xxx / ql4_os.c
1 /*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2012 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 #include "ql4_83xx.h"
22
23 /*
24 * Driver version
25 */
26 static char qla4xxx_version_str[40];
27
28 /*
29 * SRB allocation cache
30 */
31 static struct kmem_cache *srb_cachep;
32
33 /*
34 * Module parameter information and variables
35 */
36 static int ql4xdisablesysfsboot = 1;
37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
39 " Set to disable exporting boot targets to sysfs.\n"
40 "\t\t 0 - Export boot targets\n"
41 "\t\t 1 - Do not export boot targets (Default)");
42
43 int ql4xdontresethba;
44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
45 MODULE_PARM_DESC(ql4xdontresethba,
46 " Don't reset the HBA for driver recovery.\n"
47 "\t\t 0 - It will reset HBA (Default)\n"
48 "\t\t 1 - It will NOT reset HBA");
49
50 int ql4xextended_error_logging;
51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
52 MODULE_PARM_DESC(ql4xextended_error_logging,
53 " Option to enable extended error logging.\n"
54 "\t\t 0 - no logging (Default)\n"
55 "\t\t 2 - debug logging");
56
57 int ql4xenablemsix = 1;
58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
59 MODULE_PARM_DESC(ql4xenablemsix,
60 " Set to enable MSI or MSI-X interrupt mechanism.\n"
61 "\t\t 0 = enable INTx interrupt mechanism.\n"
62 "\t\t 1 = enable MSI-X interrupt mechanism (Default).\n"
63 "\t\t 2 = enable MSI interrupt mechanism.");
64
65 #define QL4_DEF_QDEPTH 32
66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
68 MODULE_PARM_DESC(ql4xmaxqdepth,
69 " Maximum queue depth to report for target devices.\n"
70 "\t\t Default: 32.");
71
72 static int ql4xqfulltracking = 1;
73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
74 MODULE_PARM_DESC(ql4xqfulltracking,
75 " Enable or disable dynamic tracking and adjustment of\n"
76 "\t\t scsi device queue depth.\n"
77 "\t\t 0 - Disable.\n"
78 "\t\t 1 - Enable. (Default)");
79
80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
83 " Target Session Recovery Timeout.\n"
84 "\t\t Default: 120 sec.");
85
86 int ql4xmdcapmask = 0x1F;
87 module_param(ql4xmdcapmask, int, S_IRUGO);
88 MODULE_PARM_DESC(ql4xmdcapmask,
89 " Set the Minidump driver capture mask level.\n"
90 "\t\t Default is 0x1F.\n"
91 "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
92
93 int ql4xenablemd = 1;
94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
95 MODULE_PARM_DESC(ql4xenablemd,
96 " Set to enable minidump.\n"
97 "\t\t 0 - disable minidump\n"
98 "\t\t 1 - enable minidump (Default)");
99
100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
101 /*
102 * SCSI host template entry points
103 */
104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
105
106 /*
107 * iSCSI template entry points
108 */
109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
110 enum iscsi_param param, char *buf);
111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
112 enum iscsi_param param, char *buf);
113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
114 enum iscsi_host_param param, char *buf);
115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
116 uint32_t len);
117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
118 enum iscsi_param_type param_type,
119 int param, char *buf);
120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
122 struct sockaddr *dst_addr,
123 int non_blocking);
124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
127 enum iscsi_param param, char *buf);
128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
129 static struct iscsi_cls_conn *
130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
132 struct iscsi_cls_conn *cls_conn,
133 uint64_t transport_fd, int is_leading);
134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
135 static struct iscsi_cls_session *
136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
137 uint16_t qdepth, uint32_t initial_cmdsn);
138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
139 static void qla4xxx_task_work(struct work_struct *wdata);
140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
141 static int qla4xxx_task_xmit(struct iscsi_task *);
142 static void qla4xxx_task_cleanup(struct iscsi_task *);
143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
145 struct iscsi_stats *stats);
146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
147 uint32_t iface_type, uint32_t payload_size,
148 uint32_t pid, struct sockaddr *dst_addr);
149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
150 uint32_t *num_entries, char *buf);
151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
152
153 /*
154 * SCSI host template entry points
155 */
156 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
157 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
158 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
159 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
160 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
161 static int qla4xxx_slave_alloc(struct scsi_device *device);
162 static int qla4xxx_slave_configure(struct scsi_device *device);
163 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
164 static umode_t qla4_attr_is_visible(int param_type, int param);
165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
166 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
167 int reason);
168
169 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
170 QLA82XX_LEGACY_INTR_CONFIG;
171
172 static struct scsi_host_template qla4xxx_driver_template = {
173 .module = THIS_MODULE,
174 .name = DRIVER_NAME,
175 .proc_name = DRIVER_NAME,
176 .queuecommand = qla4xxx_queuecommand,
177
178 .eh_abort_handler = qla4xxx_eh_abort,
179 .eh_device_reset_handler = qla4xxx_eh_device_reset,
180 .eh_target_reset_handler = qla4xxx_eh_target_reset,
181 .eh_host_reset_handler = qla4xxx_eh_host_reset,
182 .eh_timed_out = qla4xxx_eh_cmd_timed_out,
183
184 .slave_configure = qla4xxx_slave_configure,
185 .slave_alloc = qla4xxx_slave_alloc,
186 .slave_destroy = qla4xxx_slave_destroy,
187 .change_queue_depth = qla4xxx_change_queue_depth,
188
189 .this_id = -1,
190 .cmd_per_lun = 3,
191 .use_clustering = ENABLE_CLUSTERING,
192 .sg_tablesize = SG_ALL,
193
194 .max_sectors = 0xFFFF,
195 .shost_attrs = qla4xxx_host_attrs,
196 .host_reset = qla4xxx_host_reset,
197 .vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
198 };
199
200 static struct iscsi_transport qla4xxx_iscsi_transport = {
201 .owner = THIS_MODULE,
202 .name = DRIVER_NAME,
203 .caps = CAP_TEXT_NEGO |
204 CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
205 CAP_DATADGST | CAP_LOGIN_OFFLOAD |
206 CAP_MULTI_R2T,
207 .attr_is_visible = qla4_attr_is_visible,
208 .create_session = qla4xxx_session_create,
209 .destroy_session = qla4xxx_session_destroy,
210 .start_conn = qla4xxx_conn_start,
211 .create_conn = qla4xxx_conn_create,
212 .bind_conn = qla4xxx_conn_bind,
213 .stop_conn = iscsi_conn_stop,
214 .destroy_conn = qla4xxx_conn_destroy,
215 .set_param = iscsi_set_param,
216 .get_conn_param = qla4xxx_conn_get_param,
217 .get_session_param = qla4xxx_session_get_param,
218 .get_ep_param = qla4xxx_get_ep_param,
219 .ep_connect = qla4xxx_ep_connect,
220 .ep_poll = qla4xxx_ep_poll,
221 .ep_disconnect = qla4xxx_ep_disconnect,
222 .get_stats = qla4xxx_conn_get_stats,
223 .send_pdu = iscsi_conn_send_pdu,
224 .xmit_task = qla4xxx_task_xmit,
225 .cleanup_task = qla4xxx_task_cleanup,
226 .alloc_pdu = qla4xxx_alloc_pdu,
227
228 .get_host_param = qla4xxx_host_get_param,
229 .set_iface_param = qla4xxx_iface_set_param,
230 .get_iface_param = qla4xxx_get_iface_param,
231 .bsg_request = qla4xxx_bsg_request,
232 .send_ping = qla4xxx_send_ping,
233 .get_chap = qla4xxx_get_chap_list,
234 .delete_chap = qla4xxx_delete_chap,
235 };
236
237 static struct scsi_transport_template *qla4xxx_scsi_transport;
238
239 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
240 uint32_t iface_type, uint32_t payload_size,
241 uint32_t pid, struct sockaddr *dst_addr)
242 {
243 struct scsi_qla_host *ha = to_qla_host(shost);
244 struct sockaddr_in *addr;
245 struct sockaddr_in6 *addr6;
246 uint32_t options = 0;
247 uint8_t ipaddr[IPv6_ADDR_LEN];
248 int rval;
249
250 memset(ipaddr, 0, IPv6_ADDR_LEN);
251 /* IPv4 to IPv4 */
252 if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
253 (dst_addr->sa_family == AF_INET)) {
254 addr = (struct sockaddr_in *)dst_addr;
255 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
256 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
257 "dest: %pI4\n", __func__,
258 &ha->ip_config.ip_address, ipaddr));
259 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
260 ipaddr);
261 if (rval)
262 rval = -EINVAL;
263 } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
264 (dst_addr->sa_family == AF_INET6)) {
265 /* IPv6 to IPv6 */
266 addr6 = (struct sockaddr_in6 *)dst_addr;
267 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
268
269 options |= PING_IPV6_PROTOCOL_ENABLE;
270
271 /* Ping using LinkLocal address */
272 if ((iface_num == 0) || (iface_num == 1)) {
273 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
274 "src: %pI6 dest: %pI6\n", __func__,
275 &ha->ip_config.ipv6_link_local_addr,
276 ipaddr));
277 options |= PING_IPV6_LINKLOCAL_ADDR;
278 rval = qla4xxx_ping_iocb(ha, options, payload_size,
279 pid, ipaddr);
280 } else {
281 ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
282 "not supported\n", __func__, iface_num);
283 rval = -ENOSYS;
284 goto exit_send_ping;
285 }
286
287 /*
288 * If ping using LinkLocal address fails, try ping using
289 * IPv6 address
290 */
291 if (rval != QLA_SUCCESS) {
292 options &= ~PING_IPV6_LINKLOCAL_ADDR;
293 if (iface_num == 0) {
294 options |= PING_IPV6_ADDR0;
295 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
296 "Ping src: %pI6 "
297 "dest: %pI6\n", __func__,
298 &ha->ip_config.ipv6_addr0,
299 ipaddr));
300 } else if (iface_num == 1) {
301 options |= PING_IPV6_ADDR1;
302 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
303 "Ping src: %pI6 "
304 "dest: %pI6\n", __func__,
305 &ha->ip_config.ipv6_addr1,
306 ipaddr));
307 }
308 rval = qla4xxx_ping_iocb(ha, options, payload_size,
309 pid, ipaddr);
310 if (rval)
311 rval = -EINVAL;
312 }
313 } else
314 rval = -ENOSYS;
315 exit_send_ping:
316 return rval;
317 }
318
319 static umode_t qla4_attr_is_visible(int param_type, int param)
320 {
321 switch (param_type) {
322 case ISCSI_HOST_PARAM:
323 switch (param) {
324 case ISCSI_HOST_PARAM_HWADDRESS:
325 case ISCSI_HOST_PARAM_IPADDRESS:
326 case ISCSI_HOST_PARAM_INITIATOR_NAME:
327 case ISCSI_HOST_PARAM_PORT_STATE:
328 case ISCSI_HOST_PARAM_PORT_SPEED:
329 return S_IRUGO;
330 default:
331 return 0;
332 }
333 case ISCSI_PARAM:
334 switch (param) {
335 case ISCSI_PARAM_PERSISTENT_ADDRESS:
336 case ISCSI_PARAM_PERSISTENT_PORT:
337 case ISCSI_PARAM_CONN_ADDRESS:
338 case ISCSI_PARAM_CONN_PORT:
339 case ISCSI_PARAM_TARGET_NAME:
340 case ISCSI_PARAM_TPGT:
341 case ISCSI_PARAM_TARGET_ALIAS:
342 case ISCSI_PARAM_MAX_BURST:
343 case ISCSI_PARAM_MAX_R2T:
344 case ISCSI_PARAM_FIRST_BURST:
345 case ISCSI_PARAM_MAX_RECV_DLENGTH:
346 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
347 case ISCSI_PARAM_IFACE_NAME:
348 case ISCSI_PARAM_CHAP_OUT_IDX:
349 case ISCSI_PARAM_CHAP_IN_IDX:
350 case ISCSI_PARAM_USERNAME:
351 case ISCSI_PARAM_PASSWORD:
352 case ISCSI_PARAM_USERNAME_IN:
353 case ISCSI_PARAM_PASSWORD_IN:
354 return S_IRUGO;
355 default:
356 return 0;
357 }
358 case ISCSI_NET_PARAM:
359 switch (param) {
360 case ISCSI_NET_PARAM_IPV4_ADDR:
361 case ISCSI_NET_PARAM_IPV4_SUBNET:
362 case ISCSI_NET_PARAM_IPV4_GW:
363 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
364 case ISCSI_NET_PARAM_IFACE_ENABLE:
365 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
366 case ISCSI_NET_PARAM_IPV6_ADDR:
367 case ISCSI_NET_PARAM_IPV6_ROUTER:
368 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
369 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
370 case ISCSI_NET_PARAM_VLAN_ID:
371 case ISCSI_NET_PARAM_VLAN_PRIORITY:
372 case ISCSI_NET_PARAM_VLAN_ENABLED:
373 case ISCSI_NET_PARAM_MTU:
374 case ISCSI_NET_PARAM_PORT:
375 return S_IRUGO;
376 default:
377 return 0;
378 }
379 }
380
381 return 0;
382 }
383
384 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
385 uint32_t *num_entries, char *buf)
386 {
387 struct scsi_qla_host *ha = to_qla_host(shost);
388 struct ql4_chap_table *chap_table;
389 struct iscsi_chap_rec *chap_rec;
390 int max_chap_entries = 0;
391 int valid_chap_entries = 0;
392 int ret = 0, i;
393
394 if (is_qla8022(ha))
395 max_chap_entries = (ha->hw.flt_chap_size / 2) /
396 sizeof(struct ql4_chap_table);
397 else
398 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
399
400 ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
401 __func__, *num_entries, chap_tbl_idx);
402
403 if (!buf) {
404 ret = -ENOMEM;
405 goto exit_get_chap_list;
406 }
407
408 chap_rec = (struct iscsi_chap_rec *) buf;
409 mutex_lock(&ha->chap_sem);
410 for (i = chap_tbl_idx; i < max_chap_entries; i++) {
411 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
412 if (chap_table->cookie !=
413 __constant_cpu_to_le16(CHAP_VALID_COOKIE))
414 continue;
415
416 chap_rec->chap_tbl_idx = i;
417 strncpy(chap_rec->username, chap_table->name,
418 ISCSI_CHAP_AUTH_NAME_MAX_LEN);
419 strncpy(chap_rec->password, chap_table->secret,
420 QL4_CHAP_MAX_SECRET_LEN);
421 chap_rec->password_length = chap_table->secret_len;
422
423 if (chap_table->flags & BIT_7) /* local */
424 chap_rec->chap_type = CHAP_TYPE_OUT;
425
426 if (chap_table->flags & BIT_6) /* peer */
427 chap_rec->chap_type = CHAP_TYPE_IN;
428
429 chap_rec++;
430
431 valid_chap_entries++;
432 if (valid_chap_entries == *num_entries)
433 break;
434 else
435 continue;
436 }
437 mutex_unlock(&ha->chap_sem);
438
439 exit_get_chap_list:
440 ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
441 __func__, valid_chap_entries);
442 *num_entries = valid_chap_entries;
443 return ret;
444 }
445
446 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
447 {
448 int ret = 0;
449 uint16_t *chap_tbl_idx = (uint16_t *) data;
450 struct iscsi_cls_session *cls_session;
451 struct iscsi_session *sess;
452 struct ddb_entry *ddb_entry;
453
454 if (!iscsi_is_session_dev(dev))
455 goto exit_is_chap_active;
456
457 cls_session = iscsi_dev_to_session(dev);
458 sess = cls_session->dd_data;
459 ddb_entry = sess->dd_data;
460
461 if (iscsi_session_chkready(cls_session))
462 goto exit_is_chap_active;
463
464 if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
465 ret = 1;
466
467 exit_is_chap_active:
468 return ret;
469 }
470
471 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
472 uint16_t chap_tbl_idx)
473 {
474 int ret = 0;
475
476 ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
477 __qla4xxx_is_chap_active);
478
479 return ret;
480 }
481
482 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
483 {
484 struct scsi_qla_host *ha = to_qla_host(shost);
485 struct ql4_chap_table *chap_table;
486 dma_addr_t chap_dma;
487 int max_chap_entries = 0;
488 uint32_t offset = 0;
489 uint32_t chap_size;
490 int ret = 0;
491
492 chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
493 if (chap_table == NULL)
494 return -ENOMEM;
495
496 memset(chap_table, 0, sizeof(struct ql4_chap_table));
497
498 if (is_qla8022(ha))
499 max_chap_entries = (ha->hw.flt_chap_size / 2) /
500 sizeof(struct ql4_chap_table);
501 else
502 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
503
504 if (chap_tbl_idx > max_chap_entries) {
505 ret = -EINVAL;
506 goto exit_delete_chap;
507 }
508
509 /* Check if chap index is in use.
510 * If chap is in use don't delet chap entry */
511 ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
512 if (ret) {
513 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
514 "delete from flash\n", chap_tbl_idx);
515 ret = -EBUSY;
516 goto exit_delete_chap;
517 }
518
519 chap_size = sizeof(struct ql4_chap_table);
520 if (is_qla40XX(ha))
521 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
522 else {
523 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
524 /* flt_chap_size is CHAP table size for both ports
525 * so divide it by 2 to calculate the offset for second port
526 */
527 if (ha->port_num == 1)
528 offset += (ha->hw.flt_chap_size / 2);
529 offset += (chap_tbl_idx * chap_size);
530 }
531
532 ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
533 if (ret != QLA_SUCCESS) {
534 ret = -EINVAL;
535 goto exit_delete_chap;
536 }
537
538 DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
539 __le16_to_cpu(chap_table->cookie)));
540
541 if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
542 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
543 goto exit_delete_chap;
544 }
545
546 chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
547
548 offset = FLASH_CHAP_OFFSET |
549 (chap_tbl_idx * sizeof(struct ql4_chap_table));
550 ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
551 FLASH_OPT_RMW_COMMIT);
552 if (ret == QLA_SUCCESS && ha->chap_list) {
553 mutex_lock(&ha->chap_sem);
554 /* Update ha chap_list cache */
555 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
556 chap_table, sizeof(struct ql4_chap_table));
557 mutex_unlock(&ha->chap_sem);
558 }
559 if (ret != QLA_SUCCESS)
560 ret = -EINVAL;
561
562 exit_delete_chap:
563 dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
564 return ret;
565 }
566
567 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
568 enum iscsi_param_type param_type,
569 int param, char *buf)
570 {
571 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
572 struct scsi_qla_host *ha = to_qla_host(shost);
573 int len = -ENOSYS;
574
575 if (param_type != ISCSI_NET_PARAM)
576 return -ENOSYS;
577
578 switch (param) {
579 case ISCSI_NET_PARAM_IPV4_ADDR:
580 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
581 break;
582 case ISCSI_NET_PARAM_IPV4_SUBNET:
583 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
584 break;
585 case ISCSI_NET_PARAM_IPV4_GW:
586 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
587 break;
588 case ISCSI_NET_PARAM_IFACE_ENABLE:
589 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
590 len = sprintf(buf, "%s\n",
591 (ha->ip_config.ipv4_options &
592 IPOPT_IPV4_PROTOCOL_ENABLE) ?
593 "enabled" : "disabled");
594 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
595 len = sprintf(buf, "%s\n",
596 (ha->ip_config.ipv6_options &
597 IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
598 "enabled" : "disabled");
599 break;
600 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
601 len = sprintf(buf, "%s\n",
602 (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
603 "dhcp" : "static");
604 break;
605 case ISCSI_NET_PARAM_IPV6_ADDR:
606 if (iface->iface_num == 0)
607 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
608 if (iface->iface_num == 1)
609 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
610 break;
611 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
612 len = sprintf(buf, "%pI6\n",
613 &ha->ip_config.ipv6_link_local_addr);
614 break;
615 case ISCSI_NET_PARAM_IPV6_ROUTER:
616 len = sprintf(buf, "%pI6\n",
617 &ha->ip_config.ipv6_default_router_addr);
618 break;
619 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
620 len = sprintf(buf, "%s\n",
621 (ha->ip_config.ipv6_addl_options &
622 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
623 "nd" : "static");
624 break;
625 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
626 len = sprintf(buf, "%s\n",
627 (ha->ip_config.ipv6_addl_options &
628 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
629 "auto" : "static");
630 break;
631 case ISCSI_NET_PARAM_VLAN_ID:
632 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
633 len = sprintf(buf, "%d\n",
634 (ha->ip_config.ipv4_vlan_tag &
635 ISCSI_MAX_VLAN_ID));
636 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
637 len = sprintf(buf, "%d\n",
638 (ha->ip_config.ipv6_vlan_tag &
639 ISCSI_MAX_VLAN_ID));
640 break;
641 case ISCSI_NET_PARAM_VLAN_PRIORITY:
642 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
643 len = sprintf(buf, "%d\n",
644 ((ha->ip_config.ipv4_vlan_tag >> 13) &
645 ISCSI_MAX_VLAN_PRIORITY));
646 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
647 len = sprintf(buf, "%d\n",
648 ((ha->ip_config.ipv6_vlan_tag >> 13) &
649 ISCSI_MAX_VLAN_PRIORITY));
650 break;
651 case ISCSI_NET_PARAM_VLAN_ENABLED:
652 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
653 len = sprintf(buf, "%s\n",
654 (ha->ip_config.ipv4_options &
655 IPOPT_VLAN_TAGGING_ENABLE) ?
656 "enabled" : "disabled");
657 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
658 len = sprintf(buf, "%s\n",
659 (ha->ip_config.ipv6_options &
660 IPV6_OPT_VLAN_TAGGING_ENABLE) ?
661 "enabled" : "disabled");
662 break;
663 case ISCSI_NET_PARAM_MTU:
664 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
665 break;
666 case ISCSI_NET_PARAM_PORT:
667 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
668 len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
669 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
670 len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
671 break;
672 default:
673 len = -ENOSYS;
674 }
675
676 return len;
677 }
678
679 static struct iscsi_endpoint *
680 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
681 int non_blocking)
682 {
683 int ret;
684 struct iscsi_endpoint *ep;
685 struct qla_endpoint *qla_ep;
686 struct scsi_qla_host *ha;
687 struct sockaddr_in *addr;
688 struct sockaddr_in6 *addr6;
689
690 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
691 if (!shost) {
692 ret = -ENXIO;
693 printk(KERN_ERR "%s: shost is NULL\n",
694 __func__);
695 return ERR_PTR(ret);
696 }
697
698 ha = iscsi_host_priv(shost);
699
700 ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
701 if (!ep) {
702 ret = -ENOMEM;
703 return ERR_PTR(ret);
704 }
705
706 qla_ep = ep->dd_data;
707 memset(qla_ep, 0, sizeof(struct qla_endpoint));
708 if (dst_addr->sa_family == AF_INET) {
709 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
710 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
711 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
712 (char *)&addr->sin_addr));
713 } else if (dst_addr->sa_family == AF_INET6) {
714 memcpy(&qla_ep->dst_addr, dst_addr,
715 sizeof(struct sockaddr_in6));
716 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
717 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
718 (char *)&addr6->sin6_addr));
719 }
720
721 qla_ep->host = shost;
722
723 return ep;
724 }
725
726 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
727 {
728 struct qla_endpoint *qla_ep;
729 struct scsi_qla_host *ha;
730 int ret = 0;
731
732 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
733 qla_ep = ep->dd_data;
734 ha = to_qla_host(qla_ep->host);
735
736 if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
737 ret = 1;
738
739 return ret;
740 }
741
742 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
743 {
744 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
745 iscsi_destroy_endpoint(ep);
746 }
747
748 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
749 enum iscsi_param param,
750 char *buf)
751 {
752 struct qla_endpoint *qla_ep = ep->dd_data;
753 struct sockaddr *dst_addr;
754
755 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
756
757 switch (param) {
758 case ISCSI_PARAM_CONN_PORT:
759 case ISCSI_PARAM_CONN_ADDRESS:
760 if (!qla_ep)
761 return -ENOTCONN;
762
763 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
764 if (!dst_addr)
765 return -ENOTCONN;
766
767 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
768 &qla_ep->dst_addr, param, buf);
769 default:
770 return -ENOSYS;
771 }
772 }
773
774 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
775 struct iscsi_stats *stats)
776 {
777 struct iscsi_session *sess;
778 struct iscsi_cls_session *cls_sess;
779 struct ddb_entry *ddb_entry;
780 struct scsi_qla_host *ha;
781 struct ql_iscsi_stats *ql_iscsi_stats;
782 int stats_size;
783 int ret;
784 dma_addr_t iscsi_stats_dma;
785
786 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
787
788 cls_sess = iscsi_conn_to_session(cls_conn);
789 sess = cls_sess->dd_data;
790 ddb_entry = sess->dd_data;
791 ha = ddb_entry->ha;
792
793 stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
794 /* Allocate memory */
795 ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
796 &iscsi_stats_dma, GFP_KERNEL);
797 if (!ql_iscsi_stats) {
798 ql4_printk(KERN_ERR, ha,
799 "Unable to allocate memory for iscsi stats\n");
800 goto exit_get_stats;
801 }
802
803 ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
804 iscsi_stats_dma);
805 if (ret != QLA_SUCCESS) {
806 ql4_printk(KERN_ERR, ha,
807 "Unable to retrieve iscsi stats\n");
808 goto free_stats;
809 }
810
811 /* octets */
812 stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
813 stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
814 /* xmit pdus */
815 stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
816 stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
817 stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
818 stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
819 stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
820 stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
821 stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
822 stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
823 /* recv pdus */
824 stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
825 stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
826 stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
827 stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
828 stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
829 stats->logoutrsp_pdus =
830 le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
831 stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
832 stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
833 stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
834
835 free_stats:
836 dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
837 iscsi_stats_dma);
838 exit_get_stats:
839 return;
840 }
841
842 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
843 {
844 struct iscsi_cls_session *session;
845 struct iscsi_session *sess;
846 unsigned long flags;
847 enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
848
849 session = starget_to_session(scsi_target(sc->device));
850 sess = session->dd_data;
851
852 spin_lock_irqsave(&session->lock, flags);
853 if (session->state == ISCSI_SESSION_FAILED)
854 ret = BLK_EH_RESET_TIMER;
855 spin_unlock_irqrestore(&session->lock, flags);
856
857 return ret;
858 }
859
860 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
861 {
862 struct scsi_qla_host *ha = to_qla_host(shost);
863 struct iscsi_cls_host *ihost = shost->shost_data;
864 uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
865
866 qla4xxx_get_firmware_state(ha);
867
868 switch (ha->addl_fw_state & 0x0F00) {
869 case FW_ADDSTATE_LINK_SPEED_10MBPS:
870 speed = ISCSI_PORT_SPEED_10MBPS;
871 break;
872 case FW_ADDSTATE_LINK_SPEED_100MBPS:
873 speed = ISCSI_PORT_SPEED_100MBPS;
874 break;
875 case FW_ADDSTATE_LINK_SPEED_1GBPS:
876 speed = ISCSI_PORT_SPEED_1GBPS;
877 break;
878 case FW_ADDSTATE_LINK_SPEED_10GBPS:
879 speed = ISCSI_PORT_SPEED_10GBPS;
880 break;
881 }
882 ihost->port_speed = speed;
883 }
884
885 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
886 {
887 struct scsi_qla_host *ha = to_qla_host(shost);
888 struct iscsi_cls_host *ihost = shost->shost_data;
889 uint32_t state = ISCSI_PORT_STATE_DOWN;
890
891 if (test_bit(AF_LINK_UP, &ha->flags))
892 state = ISCSI_PORT_STATE_UP;
893
894 ihost->port_state = state;
895 }
896
897 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
898 enum iscsi_host_param param, char *buf)
899 {
900 struct scsi_qla_host *ha = to_qla_host(shost);
901 int len;
902
903 switch (param) {
904 case ISCSI_HOST_PARAM_HWADDRESS:
905 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
906 break;
907 case ISCSI_HOST_PARAM_IPADDRESS:
908 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
909 break;
910 case ISCSI_HOST_PARAM_INITIATOR_NAME:
911 len = sprintf(buf, "%s\n", ha->name_string);
912 break;
913 case ISCSI_HOST_PARAM_PORT_STATE:
914 qla4xxx_set_port_state(shost);
915 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
916 break;
917 case ISCSI_HOST_PARAM_PORT_SPEED:
918 qla4xxx_set_port_speed(shost);
919 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
920 break;
921 default:
922 return -ENOSYS;
923 }
924
925 return len;
926 }
927
928 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
929 {
930 if (ha->iface_ipv4)
931 return;
932
933 /* IPv4 */
934 ha->iface_ipv4 = iscsi_create_iface(ha->host,
935 &qla4xxx_iscsi_transport,
936 ISCSI_IFACE_TYPE_IPV4, 0, 0);
937 if (!ha->iface_ipv4)
938 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
939 "iface0.\n");
940 }
941
942 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
943 {
944 if (!ha->iface_ipv6_0)
945 /* IPv6 iface-0 */
946 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
947 &qla4xxx_iscsi_transport,
948 ISCSI_IFACE_TYPE_IPV6, 0,
949 0);
950 if (!ha->iface_ipv6_0)
951 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
952 "iface0.\n");
953
954 if (!ha->iface_ipv6_1)
955 /* IPv6 iface-1 */
956 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
957 &qla4xxx_iscsi_transport,
958 ISCSI_IFACE_TYPE_IPV6, 1,
959 0);
960 if (!ha->iface_ipv6_1)
961 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
962 "iface1.\n");
963 }
964
965 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
966 {
967 if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
968 qla4xxx_create_ipv4_iface(ha);
969
970 if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
971 qla4xxx_create_ipv6_iface(ha);
972 }
973
974 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
975 {
976 if (ha->iface_ipv4) {
977 iscsi_destroy_iface(ha->iface_ipv4);
978 ha->iface_ipv4 = NULL;
979 }
980 }
981
982 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
983 {
984 if (ha->iface_ipv6_0) {
985 iscsi_destroy_iface(ha->iface_ipv6_0);
986 ha->iface_ipv6_0 = NULL;
987 }
988 if (ha->iface_ipv6_1) {
989 iscsi_destroy_iface(ha->iface_ipv6_1);
990 ha->iface_ipv6_1 = NULL;
991 }
992 }
993
994 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
995 {
996 qla4xxx_destroy_ipv4_iface(ha);
997 qla4xxx_destroy_ipv6_iface(ha);
998 }
999
1000 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1001 struct iscsi_iface_param_info *iface_param,
1002 struct addr_ctrl_blk *init_fw_cb)
1003 {
1004 /*
1005 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1006 * iface_num 1 is valid only for IPv6 Addr.
1007 */
1008 switch (iface_param->param) {
1009 case ISCSI_NET_PARAM_IPV6_ADDR:
1010 if (iface_param->iface_num & 0x1)
1011 /* IPv6 Addr 1 */
1012 memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1013 sizeof(init_fw_cb->ipv6_addr1));
1014 else
1015 /* IPv6 Addr 0 */
1016 memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1017 sizeof(init_fw_cb->ipv6_addr0));
1018 break;
1019 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1020 if (iface_param->iface_num & 0x1)
1021 break;
1022 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1023 sizeof(init_fw_cb->ipv6_if_id));
1024 break;
1025 case ISCSI_NET_PARAM_IPV6_ROUTER:
1026 if (iface_param->iface_num & 0x1)
1027 break;
1028 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1029 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1030 break;
1031 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1032 /* Autocfg applies to even interface */
1033 if (iface_param->iface_num & 0x1)
1034 break;
1035
1036 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1037 init_fw_cb->ipv6_addtl_opts &=
1038 cpu_to_le16(
1039 ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1040 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1041 init_fw_cb->ipv6_addtl_opts |=
1042 cpu_to_le16(
1043 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1044 else
1045 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1046 "IPv6 addr\n");
1047 break;
1048 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1049 /* Autocfg applies to even interface */
1050 if (iface_param->iface_num & 0x1)
1051 break;
1052
1053 if (iface_param->value[0] ==
1054 ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1055 init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1056 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1057 else if (iface_param->value[0] ==
1058 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1059 init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1060 ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1061 else
1062 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1063 "IPv6 linklocal addr\n");
1064 break;
1065 case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1066 /* Autocfg applies to even interface */
1067 if (iface_param->iface_num & 0x1)
1068 break;
1069
1070 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1071 memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1072 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1073 break;
1074 case ISCSI_NET_PARAM_IFACE_ENABLE:
1075 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1076 init_fw_cb->ipv6_opts |=
1077 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1078 qla4xxx_create_ipv6_iface(ha);
1079 } else {
1080 init_fw_cb->ipv6_opts &=
1081 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1082 0xFFFF);
1083 qla4xxx_destroy_ipv6_iface(ha);
1084 }
1085 break;
1086 case ISCSI_NET_PARAM_VLAN_TAG:
1087 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1088 break;
1089 init_fw_cb->ipv6_vlan_tag =
1090 cpu_to_be16(*(uint16_t *)iface_param->value);
1091 break;
1092 case ISCSI_NET_PARAM_VLAN_ENABLED:
1093 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1094 init_fw_cb->ipv6_opts |=
1095 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1096 else
1097 init_fw_cb->ipv6_opts &=
1098 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1099 break;
1100 case ISCSI_NET_PARAM_MTU:
1101 init_fw_cb->eth_mtu_size =
1102 cpu_to_le16(*(uint16_t *)iface_param->value);
1103 break;
1104 case ISCSI_NET_PARAM_PORT:
1105 /* Autocfg applies to even interface */
1106 if (iface_param->iface_num & 0x1)
1107 break;
1108
1109 init_fw_cb->ipv6_port =
1110 cpu_to_le16(*(uint16_t *)iface_param->value);
1111 break;
1112 default:
1113 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1114 iface_param->param);
1115 break;
1116 }
1117 }
1118
1119 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1120 struct iscsi_iface_param_info *iface_param,
1121 struct addr_ctrl_blk *init_fw_cb)
1122 {
1123 switch (iface_param->param) {
1124 case ISCSI_NET_PARAM_IPV4_ADDR:
1125 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1126 sizeof(init_fw_cb->ipv4_addr));
1127 break;
1128 case ISCSI_NET_PARAM_IPV4_SUBNET:
1129 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1130 sizeof(init_fw_cb->ipv4_subnet));
1131 break;
1132 case ISCSI_NET_PARAM_IPV4_GW:
1133 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1134 sizeof(init_fw_cb->ipv4_gw_addr));
1135 break;
1136 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1137 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1138 init_fw_cb->ipv4_tcp_opts |=
1139 cpu_to_le16(TCPOPT_DHCP_ENABLE);
1140 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1141 init_fw_cb->ipv4_tcp_opts &=
1142 cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1143 else
1144 ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1145 break;
1146 case ISCSI_NET_PARAM_IFACE_ENABLE:
1147 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1148 init_fw_cb->ipv4_ip_opts |=
1149 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1150 qla4xxx_create_ipv4_iface(ha);
1151 } else {
1152 init_fw_cb->ipv4_ip_opts &=
1153 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1154 0xFFFF);
1155 qla4xxx_destroy_ipv4_iface(ha);
1156 }
1157 break;
1158 case ISCSI_NET_PARAM_VLAN_TAG:
1159 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1160 break;
1161 init_fw_cb->ipv4_vlan_tag =
1162 cpu_to_be16(*(uint16_t *)iface_param->value);
1163 break;
1164 case ISCSI_NET_PARAM_VLAN_ENABLED:
1165 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1166 init_fw_cb->ipv4_ip_opts |=
1167 cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1168 else
1169 init_fw_cb->ipv4_ip_opts &=
1170 cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1171 break;
1172 case ISCSI_NET_PARAM_MTU:
1173 init_fw_cb->eth_mtu_size =
1174 cpu_to_le16(*(uint16_t *)iface_param->value);
1175 break;
1176 case ISCSI_NET_PARAM_PORT:
1177 init_fw_cb->ipv4_port =
1178 cpu_to_le16(*(uint16_t *)iface_param->value);
1179 break;
1180 default:
1181 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1182 iface_param->param);
1183 break;
1184 }
1185 }
1186
1187 static void
1188 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1189 {
1190 struct addr_ctrl_blk_def *acb;
1191 acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1192 memset(acb->reserved1, 0, sizeof(acb->reserved1));
1193 memset(acb->reserved2, 0, sizeof(acb->reserved2));
1194 memset(acb->reserved3, 0, sizeof(acb->reserved3));
1195 memset(acb->reserved4, 0, sizeof(acb->reserved4));
1196 memset(acb->reserved5, 0, sizeof(acb->reserved5));
1197 memset(acb->reserved6, 0, sizeof(acb->reserved6));
1198 memset(acb->reserved7, 0, sizeof(acb->reserved7));
1199 memset(acb->reserved8, 0, sizeof(acb->reserved8));
1200 memset(acb->reserved9, 0, sizeof(acb->reserved9));
1201 memset(acb->reserved10, 0, sizeof(acb->reserved10));
1202 memset(acb->reserved11, 0, sizeof(acb->reserved11));
1203 memset(acb->reserved12, 0, sizeof(acb->reserved12));
1204 memset(acb->reserved13, 0, sizeof(acb->reserved13));
1205 memset(acb->reserved14, 0, sizeof(acb->reserved14));
1206 memset(acb->reserved15, 0, sizeof(acb->reserved15));
1207 }
1208
1209 static int
1210 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1211 {
1212 struct scsi_qla_host *ha = to_qla_host(shost);
1213 int rval = 0;
1214 struct iscsi_iface_param_info *iface_param = NULL;
1215 struct addr_ctrl_blk *init_fw_cb = NULL;
1216 dma_addr_t init_fw_cb_dma;
1217 uint32_t mbox_cmd[MBOX_REG_COUNT];
1218 uint32_t mbox_sts[MBOX_REG_COUNT];
1219 uint32_t rem = len;
1220 struct nlattr *attr;
1221
1222 init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1223 sizeof(struct addr_ctrl_blk),
1224 &init_fw_cb_dma, GFP_KERNEL);
1225 if (!init_fw_cb) {
1226 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1227 __func__);
1228 return -ENOMEM;
1229 }
1230
1231 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1232 memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1233 memset(&mbox_sts, 0, sizeof(mbox_sts));
1234
1235 if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1236 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1237 rval = -EIO;
1238 goto exit_init_fw_cb;
1239 }
1240
1241 nla_for_each_attr(attr, data, len, rem) {
1242 iface_param = nla_data(attr);
1243
1244 if (iface_param->param_type != ISCSI_NET_PARAM)
1245 continue;
1246
1247 switch (iface_param->iface_type) {
1248 case ISCSI_IFACE_TYPE_IPV4:
1249 switch (iface_param->iface_num) {
1250 case 0:
1251 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1252 break;
1253 default:
1254 /* Cannot have more than one IPv4 interface */
1255 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1256 "number = %d\n",
1257 iface_param->iface_num);
1258 break;
1259 }
1260 break;
1261 case ISCSI_IFACE_TYPE_IPV6:
1262 switch (iface_param->iface_num) {
1263 case 0:
1264 case 1:
1265 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1266 break;
1267 default:
1268 /* Cannot have more than two IPv6 interface */
1269 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1270 "number = %d\n",
1271 iface_param->iface_num);
1272 break;
1273 }
1274 break;
1275 default:
1276 ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1277 break;
1278 }
1279 }
1280
1281 init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1282
1283 rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1284 sizeof(struct addr_ctrl_blk),
1285 FLASH_OPT_RMW_COMMIT);
1286 if (rval != QLA_SUCCESS) {
1287 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1288 __func__);
1289 rval = -EIO;
1290 goto exit_init_fw_cb;
1291 }
1292
1293 rval = qla4xxx_disable_acb(ha);
1294 if (rval != QLA_SUCCESS) {
1295 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1296 __func__);
1297 rval = -EIO;
1298 goto exit_init_fw_cb;
1299 }
1300
1301 wait_for_completion_timeout(&ha->disable_acb_comp,
1302 DISABLE_ACB_TOV * HZ);
1303
1304 qla4xxx_initcb_to_acb(init_fw_cb);
1305
1306 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1307 if (rval != QLA_SUCCESS) {
1308 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1309 __func__);
1310 rval = -EIO;
1311 goto exit_init_fw_cb;
1312 }
1313
1314 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1315 qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1316 init_fw_cb_dma);
1317
1318 exit_init_fw_cb:
1319 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1320 init_fw_cb, init_fw_cb_dma);
1321
1322 return rval;
1323 }
1324
1325 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1326 enum iscsi_param param, char *buf)
1327 {
1328 struct iscsi_session *sess = cls_sess->dd_data;
1329 struct ddb_entry *ddb_entry = sess->dd_data;
1330 struct scsi_qla_host *ha = ddb_entry->ha;
1331 int rval, len;
1332 uint16_t idx;
1333
1334 switch (param) {
1335 case ISCSI_PARAM_CHAP_IN_IDX:
1336 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1337 sess->password_in, BIDI_CHAP,
1338 &idx);
1339 if (rval)
1340 return -EINVAL;
1341
1342 len = sprintf(buf, "%hu\n", idx);
1343 break;
1344 case ISCSI_PARAM_CHAP_OUT_IDX:
1345 rval = qla4xxx_get_chap_index(ha, sess->username,
1346 sess->password, LOCAL_CHAP,
1347 &idx);
1348 if (rval)
1349 return -EINVAL;
1350
1351 len = sprintf(buf, "%hu\n", idx);
1352 break;
1353 default:
1354 return iscsi_session_get_param(cls_sess, param, buf);
1355 }
1356
1357 return len;
1358 }
1359
1360 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1361 enum iscsi_param param, char *buf)
1362 {
1363 struct iscsi_conn *conn;
1364 struct qla_conn *qla_conn;
1365 struct sockaddr *dst_addr;
1366 int len = 0;
1367
1368 conn = cls_conn->dd_data;
1369 qla_conn = conn->dd_data;
1370 dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1371
1372 switch (param) {
1373 case ISCSI_PARAM_CONN_PORT:
1374 case ISCSI_PARAM_CONN_ADDRESS:
1375 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1376 dst_addr, param, buf);
1377 default:
1378 return iscsi_conn_get_param(cls_conn, param, buf);
1379 }
1380
1381 return len;
1382
1383 }
1384
1385 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1386 {
1387 uint32_t mbx_sts = 0;
1388 uint16_t tmp_ddb_index;
1389 int ret;
1390
1391 get_ddb_index:
1392 tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1393
1394 if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1395 DEBUG2(ql4_printk(KERN_INFO, ha,
1396 "Free DDB index not available\n"));
1397 ret = QLA_ERROR;
1398 goto exit_get_ddb_index;
1399 }
1400
1401 if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1402 goto get_ddb_index;
1403
1404 DEBUG2(ql4_printk(KERN_INFO, ha,
1405 "Found a free DDB index at %d\n", tmp_ddb_index));
1406 ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1407 if (ret == QLA_ERROR) {
1408 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1409 ql4_printk(KERN_INFO, ha,
1410 "DDB index = %d not available trying next\n",
1411 tmp_ddb_index);
1412 goto get_ddb_index;
1413 }
1414 DEBUG2(ql4_printk(KERN_INFO, ha,
1415 "Free FW DDB not available\n"));
1416 }
1417
1418 *ddb_index = tmp_ddb_index;
1419
1420 exit_get_ddb_index:
1421 return ret;
1422 }
1423
1424 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1425 struct ddb_entry *ddb_entry,
1426 char *existing_ipaddr,
1427 char *user_ipaddr)
1428 {
1429 uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1430 char formatted_ipaddr[DDB_IPADDR_LEN];
1431 int status = QLA_SUCCESS, ret = 0;
1432
1433 if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1434 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1435 '\0', NULL);
1436 if (ret == 0) {
1437 status = QLA_ERROR;
1438 goto out_match;
1439 }
1440 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1441 } else {
1442 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1443 '\0', NULL);
1444 if (ret == 0) {
1445 status = QLA_ERROR;
1446 goto out_match;
1447 }
1448 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1449 }
1450
1451 if (strcmp(existing_ipaddr, formatted_ipaddr))
1452 status = QLA_ERROR;
1453
1454 out_match:
1455 return status;
1456 }
1457
1458 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1459 struct iscsi_cls_conn *cls_conn)
1460 {
1461 int idx = 0, max_ddbs, rval;
1462 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1463 struct iscsi_session *sess, *existing_sess;
1464 struct iscsi_conn *conn, *existing_conn;
1465 struct ddb_entry *ddb_entry;
1466
1467 sess = cls_sess->dd_data;
1468 conn = cls_conn->dd_data;
1469
1470 if (sess->targetname == NULL ||
1471 conn->persistent_address == NULL ||
1472 conn->persistent_port == 0)
1473 return QLA_ERROR;
1474
1475 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1476 MAX_DEV_DB_ENTRIES;
1477
1478 for (idx = 0; idx < max_ddbs; idx++) {
1479 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1480 if (ddb_entry == NULL)
1481 continue;
1482
1483 if (ddb_entry->ddb_type != FLASH_DDB)
1484 continue;
1485
1486 existing_sess = ddb_entry->sess->dd_data;
1487 existing_conn = ddb_entry->conn->dd_data;
1488
1489 if (existing_sess->targetname == NULL ||
1490 existing_conn->persistent_address == NULL ||
1491 existing_conn->persistent_port == 0)
1492 continue;
1493
1494 DEBUG2(ql4_printk(KERN_INFO, ha,
1495 "IQN = %s User IQN = %s\n",
1496 existing_sess->targetname,
1497 sess->targetname));
1498
1499 DEBUG2(ql4_printk(KERN_INFO, ha,
1500 "IP = %s User IP = %s\n",
1501 existing_conn->persistent_address,
1502 conn->persistent_address));
1503
1504 DEBUG2(ql4_printk(KERN_INFO, ha,
1505 "Port = %d User Port = %d\n",
1506 existing_conn->persistent_port,
1507 conn->persistent_port));
1508
1509 if (strcmp(existing_sess->targetname, sess->targetname))
1510 continue;
1511 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1512 existing_conn->persistent_address,
1513 conn->persistent_address);
1514 if (rval == QLA_ERROR)
1515 continue;
1516 if (existing_conn->persistent_port != conn->persistent_port)
1517 continue;
1518 break;
1519 }
1520
1521 if (idx == max_ddbs)
1522 return QLA_ERROR;
1523
1524 DEBUG2(ql4_printk(KERN_INFO, ha,
1525 "Match found in fwdb sessions\n"));
1526 return QLA_SUCCESS;
1527 }
1528
1529 static struct iscsi_cls_session *
1530 qla4xxx_session_create(struct iscsi_endpoint *ep,
1531 uint16_t cmds_max, uint16_t qdepth,
1532 uint32_t initial_cmdsn)
1533 {
1534 struct iscsi_cls_session *cls_sess;
1535 struct scsi_qla_host *ha;
1536 struct qla_endpoint *qla_ep;
1537 struct ddb_entry *ddb_entry;
1538 uint16_t ddb_index;
1539 struct iscsi_session *sess;
1540 struct sockaddr *dst_addr;
1541 int ret;
1542
1543 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1544 if (!ep) {
1545 printk(KERN_ERR "qla4xxx: missing ep.\n");
1546 return NULL;
1547 }
1548
1549 qla_ep = ep->dd_data;
1550 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1551 ha = to_qla_host(qla_ep->host);
1552
1553 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1554 if (ret == QLA_ERROR)
1555 return NULL;
1556
1557 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1558 cmds_max, sizeof(struct ddb_entry),
1559 sizeof(struct ql4_task_data),
1560 initial_cmdsn, ddb_index);
1561 if (!cls_sess)
1562 return NULL;
1563
1564 sess = cls_sess->dd_data;
1565 ddb_entry = sess->dd_data;
1566 ddb_entry->fw_ddb_index = ddb_index;
1567 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1568 ddb_entry->ha = ha;
1569 ddb_entry->sess = cls_sess;
1570 ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1571 ddb_entry->ddb_change = qla4xxx_ddb_change;
1572 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1573 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1574 ha->tot_ddbs++;
1575
1576 return cls_sess;
1577 }
1578
1579 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1580 {
1581 struct iscsi_session *sess;
1582 struct ddb_entry *ddb_entry;
1583 struct scsi_qla_host *ha;
1584 unsigned long flags, wtime;
1585 struct dev_db_entry *fw_ddb_entry = NULL;
1586 dma_addr_t fw_ddb_entry_dma;
1587 uint32_t ddb_state;
1588 int ret;
1589
1590 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1591 sess = cls_sess->dd_data;
1592 ddb_entry = sess->dd_data;
1593 ha = ddb_entry->ha;
1594
1595 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1596 &fw_ddb_entry_dma, GFP_KERNEL);
1597 if (!fw_ddb_entry) {
1598 ql4_printk(KERN_ERR, ha,
1599 "%s: Unable to allocate dma buffer\n", __func__);
1600 goto destroy_session;
1601 }
1602
1603 wtime = jiffies + (HZ * LOGOUT_TOV);
1604 do {
1605 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1606 fw_ddb_entry, fw_ddb_entry_dma,
1607 NULL, NULL, &ddb_state, NULL,
1608 NULL, NULL);
1609 if (ret == QLA_ERROR)
1610 goto destroy_session;
1611
1612 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1613 (ddb_state == DDB_DS_SESSION_FAILED))
1614 goto destroy_session;
1615
1616 schedule_timeout_uninterruptible(HZ);
1617 } while ((time_after(wtime, jiffies)));
1618
1619 destroy_session:
1620 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1621
1622 spin_lock_irqsave(&ha->hardware_lock, flags);
1623 qla4xxx_free_ddb(ha, ddb_entry);
1624 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1625
1626 iscsi_session_teardown(cls_sess);
1627
1628 if (fw_ddb_entry)
1629 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1630 fw_ddb_entry, fw_ddb_entry_dma);
1631 }
1632
1633 static struct iscsi_cls_conn *
1634 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1635 {
1636 struct iscsi_cls_conn *cls_conn;
1637 struct iscsi_session *sess;
1638 struct ddb_entry *ddb_entry;
1639
1640 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1641 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1642 conn_idx);
1643 if (!cls_conn)
1644 return NULL;
1645
1646 sess = cls_sess->dd_data;
1647 ddb_entry = sess->dd_data;
1648 ddb_entry->conn = cls_conn;
1649
1650 return cls_conn;
1651 }
1652
1653 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1654 struct iscsi_cls_conn *cls_conn,
1655 uint64_t transport_fd, int is_leading)
1656 {
1657 struct iscsi_conn *conn;
1658 struct qla_conn *qla_conn;
1659 struct iscsi_endpoint *ep;
1660
1661 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1662
1663 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1664 return -EINVAL;
1665 ep = iscsi_lookup_endpoint(transport_fd);
1666 conn = cls_conn->dd_data;
1667 qla_conn = conn->dd_data;
1668 qla_conn->qla_ep = ep->dd_data;
1669 return 0;
1670 }
1671
1672 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1673 {
1674 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1675 struct iscsi_session *sess;
1676 struct ddb_entry *ddb_entry;
1677 struct scsi_qla_host *ha;
1678 struct dev_db_entry *fw_ddb_entry = NULL;
1679 dma_addr_t fw_ddb_entry_dma;
1680 uint32_t mbx_sts = 0;
1681 int ret = 0;
1682 int status = QLA_SUCCESS;
1683
1684 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1685 sess = cls_sess->dd_data;
1686 ddb_entry = sess->dd_data;
1687 ha = ddb_entry->ha;
1688
1689 /* Check if we have matching FW DDB, if yes then do not
1690 * login to this target. This could cause target to logout previous
1691 * connection
1692 */
1693 ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1694 if (ret == QLA_SUCCESS) {
1695 ql4_printk(KERN_INFO, ha,
1696 "Session already exist in FW.\n");
1697 ret = -EEXIST;
1698 goto exit_conn_start;
1699 }
1700
1701 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1702 &fw_ddb_entry_dma, GFP_KERNEL);
1703 if (!fw_ddb_entry) {
1704 ql4_printk(KERN_ERR, ha,
1705 "%s: Unable to allocate dma buffer\n", __func__);
1706 ret = -ENOMEM;
1707 goto exit_conn_start;
1708 }
1709
1710 ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1711 if (ret) {
1712 /* If iscsid is stopped and started then no need to do
1713 * set param again since ddb state will be already
1714 * active and FW does not allow set ddb to an
1715 * active session.
1716 */
1717 if (mbx_sts)
1718 if (ddb_entry->fw_ddb_device_state ==
1719 DDB_DS_SESSION_ACTIVE) {
1720 ddb_entry->unblock_sess(ddb_entry->sess);
1721 goto exit_set_param;
1722 }
1723
1724 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1725 __func__, ddb_entry->fw_ddb_index);
1726 goto exit_conn_start;
1727 }
1728
1729 status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1730 if (status == QLA_ERROR) {
1731 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1732 sess->targetname);
1733 ret = -EINVAL;
1734 goto exit_conn_start;
1735 }
1736
1737 if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1738 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1739
1740 DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1741 ddb_entry->fw_ddb_device_state));
1742
1743 exit_set_param:
1744 ret = 0;
1745
1746 exit_conn_start:
1747 if (fw_ddb_entry)
1748 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1749 fw_ddb_entry, fw_ddb_entry_dma);
1750 return ret;
1751 }
1752
1753 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1754 {
1755 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1756 struct iscsi_session *sess;
1757 struct scsi_qla_host *ha;
1758 struct ddb_entry *ddb_entry;
1759 int options;
1760
1761 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1762 sess = cls_sess->dd_data;
1763 ddb_entry = sess->dd_data;
1764 ha = ddb_entry->ha;
1765
1766 options = LOGOUT_OPTION_CLOSE_SESSION;
1767 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1768 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1769 }
1770
1771 static void qla4xxx_task_work(struct work_struct *wdata)
1772 {
1773 struct ql4_task_data *task_data;
1774 struct scsi_qla_host *ha;
1775 struct passthru_status *sts;
1776 struct iscsi_task *task;
1777 struct iscsi_hdr *hdr;
1778 uint8_t *data;
1779 uint32_t data_len;
1780 struct iscsi_conn *conn;
1781 int hdr_len;
1782 itt_t itt;
1783
1784 task_data = container_of(wdata, struct ql4_task_data, task_work);
1785 ha = task_data->ha;
1786 task = task_data->task;
1787 sts = &task_data->sts;
1788 hdr_len = sizeof(struct iscsi_hdr);
1789
1790 DEBUG3(printk(KERN_INFO "Status returned\n"));
1791 DEBUG3(qla4xxx_dump_buffer(sts, 64));
1792 DEBUG3(printk(KERN_INFO "Response buffer"));
1793 DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1794
1795 conn = task->conn;
1796
1797 switch (sts->completionStatus) {
1798 case PASSTHRU_STATUS_COMPLETE:
1799 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1800 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1801 itt = sts->handle;
1802 hdr->itt = itt;
1803 data = task_data->resp_buffer + hdr_len;
1804 data_len = task_data->resp_len - hdr_len;
1805 iscsi_complete_pdu(conn, hdr, data, data_len);
1806 break;
1807 default:
1808 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1809 sts->completionStatus);
1810 break;
1811 }
1812 return;
1813 }
1814
1815 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1816 {
1817 struct ql4_task_data *task_data;
1818 struct iscsi_session *sess;
1819 struct ddb_entry *ddb_entry;
1820 struct scsi_qla_host *ha;
1821 int hdr_len;
1822
1823 sess = task->conn->session;
1824 ddb_entry = sess->dd_data;
1825 ha = ddb_entry->ha;
1826 task_data = task->dd_data;
1827 memset(task_data, 0, sizeof(struct ql4_task_data));
1828
1829 if (task->sc) {
1830 ql4_printk(KERN_INFO, ha,
1831 "%s: SCSI Commands not implemented\n", __func__);
1832 return -EINVAL;
1833 }
1834
1835 hdr_len = sizeof(struct iscsi_hdr);
1836 task_data->ha = ha;
1837 task_data->task = task;
1838
1839 if (task->data_count) {
1840 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1841 task->data_count,
1842 PCI_DMA_TODEVICE);
1843 }
1844
1845 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1846 __func__, task->conn->max_recv_dlength, hdr_len));
1847
1848 task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1849 task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1850 task_data->resp_len,
1851 &task_data->resp_dma,
1852 GFP_ATOMIC);
1853 if (!task_data->resp_buffer)
1854 goto exit_alloc_pdu;
1855
1856 task_data->req_len = task->data_count + hdr_len;
1857 task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1858 task_data->req_len,
1859 &task_data->req_dma,
1860 GFP_ATOMIC);
1861 if (!task_data->req_buffer)
1862 goto exit_alloc_pdu;
1863
1864 task->hdr = task_data->req_buffer;
1865
1866 INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1867
1868 return 0;
1869
1870 exit_alloc_pdu:
1871 if (task_data->resp_buffer)
1872 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1873 task_data->resp_buffer, task_data->resp_dma);
1874
1875 if (task_data->req_buffer)
1876 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1877 task_data->req_buffer, task_data->req_dma);
1878 return -ENOMEM;
1879 }
1880
1881 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1882 {
1883 struct ql4_task_data *task_data;
1884 struct iscsi_session *sess;
1885 struct ddb_entry *ddb_entry;
1886 struct scsi_qla_host *ha;
1887 int hdr_len;
1888
1889 hdr_len = sizeof(struct iscsi_hdr);
1890 sess = task->conn->session;
1891 ddb_entry = sess->dd_data;
1892 ha = ddb_entry->ha;
1893 task_data = task->dd_data;
1894
1895 if (task->data_count) {
1896 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1897 task->data_count, PCI_DMA_TODEVICE);
1898 }
1899
1900 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1901 __func__, task->conn->max_recv_dlength, hdr_len));
1902
1903 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1904 task_data->resp_buffer, task_data->resp_dma);
1905 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1906 task_data->req_buffer, task_data->req_dma);
1907 return;
1908 }
1909
1910 static int qla4xxx_task_xmit(struct iscsi_task *task)
1911 {
1912 struct scsi_cmnd *sc = task->sc;
1913 struct iscsi_session *sess = task->conn->session;
1914 struct ddb_entry *ddb_entry = sess->dd_data;
1915 struct scsi_qla_host *ha = ddb_entry->ha;
1916
1917 if (!sc)
1918 return qla4xxx_send_passthru0(task);
1919
1920 ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1921 __func__);
1922 return -ENOSYS;
1923 }
1924
1925 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1926 struct dev_db_entry *fw_ddb_entry,
1927 struct iscsi_cls_session *cls_sess,
1928 struct iscsi_cls_conn *cls_conn)
1929 {
1930 int buflen = 0;
1931 struct iscsi_session *sess;
1932 struct ddb_entry *ddb_entry;
1933 struct iscsi_conn *conn;
1934 char ip_addr[DDB_IPADDR_LEN];
1935 uint16_t options = 0;
1936
1937 sess = cls_sess->dd_data;
1938 ddb_entry = sess->dd_data;
1939 conn = cls_conn->dd_data;
1940
1941 ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
1942
1943 conn->max_recv_dlength = BYTE_UNITS *
1944 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1945
1946 conn->max_xmit_dlength = BYTE_UNITS *
1947 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1948
1949 sess->initial_r2t_en =
1950 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1951
1952 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1953
1954 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1955
1956 sess->first_burst = BYTE_UNITS *
1957 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1958
1959 sess->max_burst = BYTE_UNITS *
1960 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1961
1962 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1963
1964 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1965
1966 conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1967
1968 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1969
1970 options = le16_to_cpu(fw_ddb_entry->options);
1971 if (options & DDB_OPT_IPV6_DEVICE)
1972 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1973 else
1974 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1975
1976 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1977 (char *)fw_ddb_entry->iscsi_name, buflen);
1978 iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1979 (char *)ha->name_string, buflen);
1980 iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1981 (char *)ip_addr, buflen);
1982 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
1983 (char *)fw_ddb_entry->iscsi_alias, buflen);
1984 }
1985
1986 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1987 struct ddb_entry *ddb_entry)
1988 {
1989 struct iscsi_cls_session *cls_sess;
1990 struct iscsi_cls_conn *cls_conn;
1991 uint32_t ddb_state;
1992 dma_addr_t fw_ddb_entry_dma;
1993 struct dev_db_entry *fw_ddb_entry;
1994
1995 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1996 &fw_ddb_entry_dma, GFP_KERNEL);
1997 if (!fw_ddb_entry) {
1998 ql4_printk(KERN_ERR, ha,
1999 "%s: Unable to allocate dma buffer\n", __func__);
2000 goto exit_session_conn_fwddb_param;
2001 }
2002
2003 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2004 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2005 NULL, NULL, NULL) == QLA_ERROR) {
2006 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2007 "get_ddb_entry for fw_ddb_index %d\n",
2008 ha->host_no, __func__,
2009 ddb_entry->fw_ddb_index));
2010 goto exit_session_conn_fwddb_param;
2011 }
2012
2013 cls_sess = ddb_entry->sess;
2014
2015 cls_conn = ddb_entry->conn;
2016
2017 /* Update params */
2018 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2019
2020 exit_session_conn_fwddb_param:
2021 if (fw_ddb_entry)
2022 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2023 fw_ddb_entry, fw_ddb_entry_dma);
2024 }
2025
2026 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2027 struct ddb_entry *ddb_entry)
2028 {
2029 struct iscsi_cls_session *cls_sess;
2030 struct iscsi_cls_conn *cls_conn;
2031 struct iscsi_session *sess;
2032 struct iscsi_conn *conn;
2033 uint32_t ddb_state;
2034 dma_addr_t fw_ddb_entry_dma;
2035 struct dev_db_entry *fw_ddb_entry;
2036
2037 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2038 &fw_ddb_entry_dma, GFP_KERNEL);
2039 if (!fw_ddb_entry) {
2040 ql4_printk(KERN_ERR, ha,
2041 "%s: Unable to allocate dma buffer\n", __func__);
2042 goto exit_session_conn_param;
2043 }
2044
2045 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2046 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2047 NULL, NULL, NULL) == QLA_ERROR) {
2048 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2049 "get_ddb_entry for fw_ddb_index %d\n",
2050 ha->host_no, __func__,
2051 ddb_entry->fw_ddb_index));
2052 goto exit_session_conn_param;
2053 }
2054
2055 cls_sess = ddb_entry->sess;
2056 sess = cls_sess->dd_data;
2057
2058 cls_conn = ddb_entry->conn;
2059 conn = cls_conn->dd_data;
2060
2061 /* Update timers after login */
2062 ddb_entry->default_relogin_timeout =
2063 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2064 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2065 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2066 ddb_entry->default_time2wait =
2067 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2068
2069 /* Update params */
2070 ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2071 conn->max_recv_dlength = BYTE_UNITS *
2072 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2073
2074 conn->max_xmit_dlength = BYTE_UNITS *
2075 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2076
2077 sess->initial_r2t_en =
2078 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2079
2080 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2081
2082 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2083
2084 sess->first_burst = BYTE_UNITS *
2085 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2086
2087 sess->max_burst = BYTE_UNITS *
2088 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2089
2090 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2091
2092 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2093
2094 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2095
2096 memcpy(sess->initiatorname, ha->name_string,
2097 min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2098
2099 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2100 (char *)fw_ddb_entry->iscsi_alias, 0);
2101
2102 exit_session_conn_param:
2103 if (fw_ddb_entry)
2104 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2105 fw_ddb_entry, fw_ddb_entry_dma);
2106 }
2107
2108 /*
2109 * Timer routines
2110 */
2111
2112 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2113 unsigned long interval)
2114 {
2115 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2116 __func__, ha->host->host_no));
2117 init_timer(&ha->timer);
2118 ha->timer.expires = jiffies + interval * HZ;
2119 ha->timer.data = (unsigned long)ha;
2120 ha->timer.function = (void (*)(unsigned long))func;
2121 add_timer(&ha->timer);
2122 ha->timer_active = 1;
2123 }
2124
2125 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2126 {
2127 del_timer_sync(&ha->timer);
2128 ha->timer_active = 0;
2129 }
2130
2131 /***
2132 * qla4xxx_mark_device_missing - blocks the session
2133 * @cls_session: Pointer to the session to be blocked
2134 * @ddb_entry: Pointer to device database entry
2135 *
2136 * This routine marks a device missing and close connection.
2137 **/
2138 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2139 {
2140 iscsi_block_session(cls_session);
2141 }
2142
2143 /**
2144 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2145 * @ha: Pointer to host adapter structure.
2146 *
2147 * This routine marks a device missing and resets the relogin retry count.
2148 **/
2149 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2150 {
2151 iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2152 }
2153
2154 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2155 struct ddb_entry *ddb_entry,
2156 struct scsi_cmnd *cmd)
2157 {
2158 struct srb *srb;
2159
2160 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2161 if (!srb)
2162 return srb;
2163
2164 kref_init(&srb->srb_ref);
2165 srb->ha = ha;
2166 srb->ddb = ddb_entry;
2167 srb->cmd = cmd;
2168 srb->flags = 0;
2169 CMD_SP(cmd) = (void *)srb;
2170
2171 return srb;
2172 }
2173
2174 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2175 {
2176 struct scsi_cmnd *cmd = srb->cmd;
2177
2178 if (srb->flags & SRB_DMA_VALID) {
2179 scsi_dma_unmap(cmd);
2180 srb->flags &= ~SRB_DMA_VALID;
2181 }
2182 CMD_SP(cmd) = NULL;
2183 }
2184
2185 void qla4xxx_srb_compl(struct kref *ref)
2186 {
2187 struct srb *srb = container_of(ref, struct srb, srb_ref);
2188 struct scsi_cmnd *cmd = srb->cmd;
2189 struct scsi_qla_host *ha = srb->ha;
2190
2191 qla4xxx_srb_free_dma(ha, srb);
2192
2193 mempool_free(srb, ha->srb_mempool);
2194
2195 cmd->scsi_done(cmd);
2196 }
2197
2198 /**
2199 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2200 * @host: scsi host
2201 * @cmd: Pointer to Linux's SCSI command structure
2202 *
2203 * Remarks:
2204 * This routine is invoked by Linux to send a SCSI command to the driver.
2205 * The mid-level driver tries to ensure that queuecommand never gets
2206 * invoked concurrently with itself or the interrupt handler (although
2207 * the interrupt handler may call this routine as part of request-
2208 * completion handling). Unfortunely, it sometimes calls the scheduler
2209 * in interrupt context which is a big NO! NO!.
2210 **/
2211 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2212 {
2213 struct scsi_qla_host *ha = to_qla_host(host);
2214 struct ddb_entry *ddb_entry = cmd->device->hostdata;
2215 struct iscsi_cls_session *sess = ddb_entry->sess;
2216 struct srb *srb;
2217 int rval;
2218
2219 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2220 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2221 cmd->result = DID_NO_CONNECT << 16;
2222 else
2223 cmd->result = DID_REQUEUE << 16;
2224 goto qc_fail_command;
2225 }
2226
2227 if (!sess) {
2228 cmd->result = DID_IMM_RETRY << 16;
2229 goto qc_fail_command;
2230 }
2231
2232 rval = iscsi_session_chkready(sess);
2233 if (rval) {
2234 cmd->result = rval;
2235 goto qc_fail_command;
2236 }
2237
2238 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2239 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2240 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2241 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2242 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2243 !test_bit(AF_ONLINE, &ha->flags) ||
2244 !test_bit(AF_LINK_UP, &ha->flags) ||
2245 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2246 goto qc_host_busy;
2247
2248 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2249 if (!srb)
2250 goto qc_host_busy;
2251
2252 rval = qla4xxx_send_command_to_isp(ha, srb);
2253 if (rval != QLA_SUCCESS)
2254 goto qc_host_busy_free_sp;
2255
2256 return 0;
2257
2258 qc_host_busy_free_sp:
2259 qla4xxx_srb_free_dma(ha, srb);
2260 mempool_free(srb, ha->srb_mempool);
2261
2262 qc_host_busy:
2263 return SCSI_MLQUEUE_HOST_BUSY;
2264
2265 qc_fail_command:
2266 cmd->scsi_done(cmd);
2267
2268 return 0;
2269 }
2270
2271 /**
2272 * qla4xxx_mem_free - frees memory allocated to adapter
2273 * @ha: Pointer to host adapter structure.
2274 *
2275 * Frees memory previously allocated by qla4xxx_mem_alloc
2276 **/
2277 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2278 {
2279 if (ha->queues)
2280 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2281 ha->queues_dma);
2282
2283 if (ha->fw_dump)
2284 vfree(ha->fw_dump);
2285
2286 ha->queues_len = 0;
2287 ha->queues = NULL;
2288 ha->queues_dma = 0;
2289 ha->request_ring = NULL;
2290 ha->request_dma = 0;
2291 ha->response_ring = NULL;
2292 ha->response_dma = 0;
2293 ha->shadow_regs = NULL;
2294 ha->shadow_regs_dma = 0;
2295 ha->fw_dump = NULL;
2296 ha->fw_dump_size = 0;
2297
2298 /* Free srb pool. */
2299 if (ha->srb_mempool)
2300 mempool_destroy(ha->srb_mempool);
2301
2302 ha->srb_mempool = NULL;
2303
2304 if (ha->chap_dma_pool)
2305 dma_pool_destroy(ha->chap_dma_pool);
2306
2307 if (ha->chap_list)
2308 vfree(ha->chap_list);
2309 ha->chap_list = NULL;
2310
2311 if (ha->fw_ddb_dma_pool)
2312 dma_pool_destroy(ha->fw_ddb_dma_pool);
2313
2314 /* release io space registers */
2315 if (is_qla8022(ha)) {
2316 if (ha->nx_pcibase)
2317 iounmap(
2318 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2319 } else if (is_qla8032(ha)) {
2320 if (ha->nx_pcibase)
2321 iounmap(
2322 (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2323 } else if (ha->reg) {
2324 iounmap(ha->reg);
2325 }
2326
2327 if (ha->reset_tmplt.buff)
2328 vfree(ha->reset_tmplt.buff);
2329
2330 pci_release_regions(ha->pdev);
2331 }
2332
2333 /**
2334 * qla4xxx_mem_alloc - allocates memory for use by adapter.
2335 * @ha: Pointer to host adapter structure
2336 *
2337 * Allocates DMA memory for request and response queues. Also allocates memory
2338 * for srbs.
2339 **/
2340 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2341 {
2342 unsigned long align;
2343
2344 /* Allocate contiguous block of DMA memory for queues. */
2345 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2346 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2347 sizeof(struct shadow_regs) +
2348 MEM_ALIGN_VALUE +
2349 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2350 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2351 &ha->queues_dma, GFP_KERNEL);
2352 if (ha->queues == NULL) {
2353 ql4_printk(KERN_WARNING, ha,
2354 "Memory Allocation failed - queues.\n");
2355
2356 goto mem_alloc_error_exit;
2357 }
2358 memset(ha->queues, 0, ha->queues_len);
2359
2360 /*
2361 * As per RISC alignment requirements -- the bus-address must be a
2362 * multiple of the request-ring size (in bytes).
2363 */
2364 align = 0;
2365 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2366 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2367 (MEM_ALIGN_VALUE - 1));
2368
2369 /* Update request and response queue pointers. */
2370 ha->request_dma = ha->queues_dma + align;
2371 ha->request_ring = (struct queue_entry *) (ha->queues + align);
2372 ha->response_dma = ha->queues_dma + align +
2373 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2374 ha->response_ring = (struct queue_entry *) (ha->queues + align +
2375 (REQUEST_QUEUE_DEPTH *
2376 QUEUE_SIZE));
2377 ha->shadow_regs_dma = ha->queues_dma + align +
2378 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2379 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2380 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2381 (REQUEST_QUEUE_DEPTH *
2382 QUEUE_SIZE) +
2383 (RESPONSE_QUEUE_DEPTH *
2384 QUEUE_SIZE));
2385
2386 /* Allocate memory for srb pool. */
2387 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2388 mempool_free_slab, srb_cachep);
2389 if (ha->srb_mempool == NULL) {
2390 ql4_printk(KERN_WARNING, ha,
2391 "Memory Allocation failed - SRB Pool.\n");
2392
2393 goto mem_alloc_error_exit;
2394 }
2395
2396 ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2397 CHAP_DMA_BLOCK_SIZE, 8, 0);
2398
2399 if (ha->chap_dma_pool == NULL) {
2400 ql4_printk(KERN_WARNING, ha,
2401 "%s: chap_dma_pool allocation failed..\n", __func__);
2402 goto mem_alloc_error_exit;
2403 }
2404
2405 ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2406 DDB_DMA_BLOCK_SIZE, 8, 0);
2407
2408 if (ha->fw_ddb_dma_pool == NULL) {
2409 ql4_printk(KERN_WARNING, ha,
2410 "%s: fw_ddb_dma_pool allocation failed..\n",
2411 __func__);
2412 goto mem_alloc_error_exit;
2413 }
2414
2415 return QLA_SUCCESS;
2416
2417 mem_alloc_error_exit:
2418 qla4xxx_mem_free(ha);
2419 return QLA_ERROR;
2420 }
2421
2422 /**
2423 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2424 * @ha: adapter block pointer.
2425 *
2426 * Note: The caller should not hold the idc lock.
2427 **/
2428 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2429 {
2430 uint32_t temp, temp_state, temp_val;
2431 int status = QLA_SUCCESS;
2432
2433 temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2434
2435 temp_state = qla82xx_get_temp_state(temp);
2436 temp_val = qla82xx_get_temp_val(temp);
2437
2438 if (temp_state == QLA82XX_TEMP_PANIC) {
2439 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2440 " exceeds maximum allowed. Hardware has been shut"
2441 " down.\n", temp_val);
2442 status = QLA_ERROR;
2443 } else if (temp_state == QLA82XX_TEMP_WARN) {
2444 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2445 ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2446 " degrees C exceeds operating range."
2447 " Immediate action needed.\n", temp_val);
2448 } else {
2449 if (ha->temperature == QLA82XX_TEMP_WARN)
2450 ql4_printk(KERN_INFO, ha, "Device temperature is"
2451 " now %d degrees C in normal range.\n",
2452 temp_val);
2453 }
2454 ha->temperature = temp_state;
2455 return status;
2456 }
2457
2458 /**
2459 * qla4_8xxx_check_fw_alive - Check firmware health
2460 * @ha: Pointer to host adapter structure.
2461 *
2462 * Context: Interrupt
2463 **/
2464 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2465 {
2466 uint32_t fw_heartbeat_counter;
2467 int status = QLA_SUCCESS;
2468
2469 fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2470 QLA8XXX_PEG_ALIVE_COUNTER);
2471 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2472 if (fw_heartbeat_counter == 0xffffffff) {
2473 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2474 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2475 ha->host_no, __func__));
2476 return status;
2477 }
2478
2479 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2480 ha->seconds_since_last_heartbeat++;
2481 /* FW not alive after 2 seconds */
2482 if (ha->seconds_since_last_heartbeat == 2) {
2483 ha->seconds_since_last_heartbeat = 0;
2484 qla4_8xxx_dump_peg_reg(ha);
2485 status = QLA_ERROR;
2486 }
2487 } else
2488 ha->seconds_since_last_heartbeat = 0;
2489
2490 ha->fw_heartbeat_counter = fw_heartbeat_counter;
2491 return status;
2492 }
2493
2494 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2495 {
2496 uint32_t halt_status;
2497 int halt_status_unrecoverable = 0;
2498
2499 halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2500
2501 if (is_qla8022(ha)) {
2502 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2503 __func__);
2504 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2505 CRB_NIU_XG_PAUSE_CTL_P0 |
2506 CRB_NIU_XG_PAUSE_CTL_P1);
2507
2508 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2509 ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2510 __func__);
2511 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2512 halt_status_unrecoverable = 1;
2513 } else if (is_qla8032(ha)) {
2514 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2515 ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2516 __func__);
2517 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2518 halt_status_unrecoverable = 1;
2519 }
2520
2521 /*
2522 * Since we cannot change dev_state in interrupt context,
2523 * set appropriate DPC flag then wakeup DPC
2524 */
2525 if (halt_status_unrecoverable) {
2526 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2527 } else {
2528 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2529 __func__);
2530 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2531 }
2532 qla4xxx_mailbox_premature_completion(ha);
2533 qla4xxx_wake_dpc(ha);
2534 }
2535
2536 /**
2537 * qla4_8xxx_watchdog - Poll dev state
2538 * @ha: Pointer to host adapter structure.
2539 *
2540 * Context: Interrupt
2541 **/
2542 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2543 {
2544 uint32_t dev_state;
2545
2546 /* don't poll if reset is going on */
2547 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2548 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2549 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2550 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2551
2552 if (qla4_8xxx_check_temp(ha)) {
2553 if (is_qla8022(ha)) {
2554 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2555 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2556 CRB_NIU_XG_PAUSE_CTL_P0 |
2557 CRB_NIU_XG_PAUSE_CTL_P1);
2558 }
2559 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2560 qla4xxx_wake_dpc(ha);
2561 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2562 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2563 if (is_qla8032(ha) ||
2564 (is_qla8022(ha) && !ql4xdontresethba)) {
2565 ql4_printk(KERN_INFO, ha, "%s: HW State: "
2566 "NEED RESET!\n", __func__);
2567 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2568 qla4xxx_wake_dpc(ha);
2569 }
2570 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
2571 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2572 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2573 __func__);
2574 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2575 qla4xxx_wake_dpc(ha);
2576 } else {
2577 /* Check firmware health */
2578 if (qla4_8xxx_check_fw_alive(ha))
2579 qla4_8xxx_process_fw_error(ha);
2580 }
2581 }
2582 }
2583
2584 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2585 {
2586 struct iscsi_session *sess;
2587 struct ddb_entry *ddb_entry;
2588 struct scsi_qla_host *ha;
2589
2590 sess = cls_sess->dd_data;
2591 ddb_entry = sess->dd_data;
2592 ha = ddb_entry->ha;
2593
2594 if (!(ddb_entry->ddb_type == FLASH_DDB))
2595 return;
2596
2597 if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2598 !iscsi_is_session_online(cls_sess)) {
2599 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2600 INVALID_ENTRY) {
2601 if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2602 0) {
2603 atomic_set(&ddb_entry->retry_relogin_timer,
2604 INVALID_ENTRY);
2605 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2606 set_bit(DF_RELOGIN, &ddb_entry->flags);
2607 DEBUG2(ql4_printk(KERN_INFO, ha,
2608 "%s: index [%d] login device\n",
2609 __func__, ddb_entry->fw_ddb_index));
2610 } else
2611 atomic_dec(&ddb_entry->retry_relogin_timer);
2612 }
2613 }
2614
2615 /* Wait for relogin to timeout */
2616 if (atomic_read(&ddb_entry->relogin_timer) &&
2617 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2618 /*
2619 * If the relogin times out and the device is
2620 * still NOT ONLINE then try and relogin again.
2621 */
2622 if (!iscsi_is_session_online(cls_sess)) {
2623 /* Reset retry relogin timer */
2624 atomic_inc(&ddb_entry->relogin_retry_count);
2625 DEBUG2(ql4_printk(KERN_INFO, ha,
2626 "%s: index[%d] relogin timed out-retrying"
2627 " relogin (%d), retry (%d)\n", __func__,
2628 ddb_entry->fw_ddb_index,
2629 atomic_read(&ddb_entry->relogin_retry_count),
2630 ddb_entry->default_time2wait + 4));
2631 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2632 atomic_set(&ddb_entry->retry_relogin_timer,
2633 ddb_entry->default_time2wait + 4);
2634 }
2635 }
2636 }
2637
2638 /**
2639 * qla4xxx_timer - checks every second for work to do.
2640 * @ha: Pointer to host adapter structure.
2641 **/
2642 static void qla4xxx_timer(struct scsi_qla_host *ha)
2643 {
2644 int start_dpc = 0;
2645 uint16_t w;
2646
2647 iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2648
2649 /* If we are in the middle of AER/EEH processing
2650 * skip any processing and reschedule the timer
2651 */
2652 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2653 mod_timer(&ha->timer, jiffies + HZ);
2654 return;
2655 }
2656
2657 /* Hardware read to trigger an EEH error during mailbox waits. */
2658 if (!pci_channel_offline(ha->pdev))
2659 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
2660
2661 if (is_qla80XX(ha))
2662 qla4_8xxx_watchdog(ha);
2663
2664 if (is_qla40XX(ha)) {
2665 /* Check for heartbeat interval. */
2666 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2667 ha->heartbeat_interval != 0) {
2668 ha->seconds_since_last_heartbeat++;
2669 if (ha->seconds_since_last_heartbeat >
2670 ha->heartbeat_interval + 2)
2671 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2672 }
2673 }
2674
2675 /* Process any deferred work. */
2676 if (!list_empty(&ha->work_list))
2677 start_dpc++;
2678
2679 /* Wakeup the dpc routine for this adapter, if needed. */
2680 if (start_dpc ||
2681 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2682 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2683 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
2684 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2685 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2686 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
2687 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
2688 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2689 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2690 test_bit(DPC_AEN, &ha->dpc_flags)) {
2691 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2692 " - dpc flags = 0x%lx\n",
2693 ha->host_no, __func__, ha->dpc_flags));
2694 qla4xxx_wake_dpc(ha);
2695 }
2696
2697 /* Reschedule timer thread to call us back in one second */
2698 mod_timer(&ha->timer, jiffies + HZ);
2699
2700 DEBUG2(ha->seconds_since_last_intr++);
2701 }
2702
2703 /**
2704 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
2705 * @ha: Pointer to host adapter structure.
2706 *
2707 * This routine stalls the driver until all outstanding commands are returned.
2708 * Caller must release the Hardware Lock prior to calling this routine.
2709 **/
2710 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2711 {
2712 uint32_t index = 0;
2713 unsigned long flags;
2714 struct scsi_cmnd *cmd;
2715
2716 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2717
2718 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2719 "complete\n", WAIT_CMD_TOV));
2720
2721 while (!time_after_eq(jiffies, wtime)) {
2722 spin_lock_irqsave(&ha->hardware_lock, flags);
2723 /* Find a command that hasn't completed. */
2724 for (index = 0; index < ha->host->can_queue; index++) {
2725 cmd = scsi_host_find_tag(ha->host, index);
2726 /*
2727 * We cannot just check if the index is valid,
2728 * becase if we are run from the scsi eh, then
2729 * the scsi/block layer is going to prevent
2730 * the tag from being released.
2731 */
2732 if (cmd != NULL && CMD_SP(cmd))
2733 break;
2734 }
2735 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2736
2737 /* If No Commands are pending, wait is complete */
2738 if (index == ha->host->can_queue)
2739 return QLA_SUCCESS;
2740
2741 msleep(1000);
2742 }
2743 /* If we timed out on waiting for commands to come back
2744 * return ERROR. */
2745 return QLA_ERROR;
2746 }
2747
2748 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
2749 {
2750 uint32_t ctrl_status;
2751 unsigned long flags = 0;
2752
2753 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
2754
2755 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2756 return QLA_ERROR;
2757
2758 spin_lock_irqsave(&ha->hardware_lock, flags);
2759
2760 /*
2761 * If the SCSI Reset Interrupt bit is set, clear it.
2762 * Otherwise, the Soft Reset won't work.
2763 */
2764 ctrl_status = readw(&ha->reg->ctrl_status);
2765 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2766 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2767
2768 /* Issue Soft Reset */
2769 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2770 readl(&ha->reg->ctrl_status);
2771
2772 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2773 return QLA_SUCCESS;
2774 }
2775
2776 /**
2777 * qla4xxx_soft_reset - performs soft reset.
2778 * @ha: Pointer to host adapter structure.
2779 **/
2780 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2781 {
2782 uint32_t max_wait_time;
2783 unsigned long flags = 0;
2784 int status;
2785 uint32_t ctrl_status;
2786
2787 status = qla4xxx_hw_reset(ha);
2788 if (status != QLA_SUCCESS)
2789 return status;
2790
2791 status = QLA_ERROR;
2792 /* Wait until the Network Reset Intr bit is cleared */
2793 max_wait_time = RESET_INTR_TOV;
2794 do {
2795 spin_lock_irqsave(&ha->hardware_lock, flags);
2796 ctrl_status = readw(&ha->reg->ctrl_status);
2797 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2798
2799 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2800 break;
2801
2802 msleep(1000);
2803 } while ((--max_wait_time));
2804
2805 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2806 DEBUG2(printk(KERN_WARNING
2807 "scsi%ld: Network Reset Intr not cleared by "
2808 "Network function, clearing it now!\n",
2809 ha->host_no));
2810 spin_lock_irqsave(&ha->hardware_lock, flags);
2811 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2812 readl(&ha->reg->ctrl_status);
2813 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2814 }
2815
2816 /* Wait until the firmware tells us the Soft Reset is done */
2817 max_wait_time = SOFT_RESET_TOV;
2818 do {
2819 spin_lock_irqsave(&ha->hardware_lock, flags);
2820 ctrl_status = readw(&ha->reg->ctrl_status);
2821 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2822
2823 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2824 status = QLA_SUCCESS;
2825 break;
2826 }
2827
2828 msleep(1000);
2829 } while ((--max_wait_time));
2830
2831 /*
2832 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2833 * after the soft reset has taken place.
2834 */
2835 spin_lock_irqsave(&ha->hardware_lock, flags);
2836 ctrl_status = readw(&ha->reg->ctrl_status);
2837 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2838 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2839 readl(&ha->reg->ctrl_status);
2840 }
2841 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2842
2843 /* If soft reset fails then most probably the bios on other
2844 * function is also enabled.
2845 * Since the initialization is sequential the other fn
2846 * wont be able to acknowledge the soft reset.
2847 * Issue a force soft reset to workaround this scenario.
2848 */
2849 if (max_wait_time == 0) {
2850 /* Issue Force Soft Reset */
2851 spin_lock_irqsave(&ha->hardware_lock, flags);
2852 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2853 readl(&ha->reg->ctrl_status);
2854 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2855 /* Wait until the firmware tells us the Soft Reset is done */
2856 max_wait_time = SOFT_RESET_TOV;
2857 do {
2858 spin_lock_irqsave(&ha->hardware_lock, flags);
2859 ctrl_status = readw(&ha->reg->ctrl_status);
2860 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2861
2862 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2863 status = QLA_SUCCESS;
2864 break;
2865 }
2866
2867 msleep(1000);
2868 } while ((--max_wait_time));
2869 }
2870
2871 return status;
2872 }
2873
2874 /**
2875 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
2876 * @ha: Pointer to host adapter structure.
2877 * @res: returned scsi status
2878 *
2879 * This routine is called just prior to a HARD RESET to return all
2880 * outstanding commands back to the Operating System.
2881 * Caller should make sure that the following locks are released
2882 * before this calling routine: Hardware lock, and io_request_lock.
2883 **/
2884 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
2885 {
2886 struct srb *srb;
2887 int i;
2888 unsigned long flags;
2889
2890 spin_lock_irqsave(&ha->hardware_lock, flags);
2891 for (i = 0; i < ha->host->can_queue; i++) {
2892 srb = qla4xxx_del_from_active_array(ha, i);
2893 if (srb != NULL) {
2894 srb->cmd->result = res;
2895 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2896 }
2897 }
2898 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2899 }
2900
2901 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2902 {
2903 clear_bit(AF_ONLINE, &ha->flags);
2904
2905 /* Disable the board */
2906 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
2907
2908 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2909 qla4xxx_mark_all_devices_missing(ha);
2910 clear_bit(AF_INIT_DONE, &ha->flags);
2911 }
2912
2913 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2914 {
2915 struct iscsi_session *sess;
2916 struct ddb_entry *ddb_entry;
2917
2918 sess = cls_session->dd_data;
2919 ddb_entry = sess->dd_data;
2920 ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
2921
2922 if (ddb_entry->ddb_type == FLASH_DDB)
2923 iscsi_block_session(ddb_entry->sess);
2924 else
2925 iscsi_session_failure(cls_session->dd_data,
2926 ISCSI_ERR_CONN_FAILED);
2927 }
2928
2929 /**
2930 * qla4xxx_recover_adapter - recovers adapter after a fatal error
2931 * @ha: Pointer to host adapter structure.
2932 **/
2933 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
2934 {
2935 int status = QLA_ERROR;
2936 uint8_t reset_chip = 0;
2937 uint32_t dev_state;
2938 unsigned long wait;
2939
2940 /* Stall incoming I/O until we are done */
2941 scsi_block_requests(ha->host);
2942 clear_bit(AF_ONLINE, &ha->flags);
2943 clear_bit(AF_LINK_UP, &ha->flags);
2944
2945 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
2946
2947 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2948
2949 if (is_qla8032(ha) &&
2950 !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2951 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2952 __func__);
2953 /* disable pause frame for ISP83xx */
2954 qla4_83xx_disable_pause(ha);
2955 }
2956
2957 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2958
2959 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2960 reset_chip = 1;
2961
2962 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2963 * do not reset adapter, jump to initialize_adapter */
2964 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2965 status = QLA_SUCCESS;
2966 goto recover_ha_init_adapter;
2967 }
2968
2969 /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
2970 * from eh_host_reset or ioctl module */
2971 if (is_qla80XX(ha) && !reset_chip &&
2972 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2973
2974 DEBUG2(ql4_printk(KERN_INFO, ha,
2975 "scsi%ld: %s - Performing stop_firmware...\n",
2976 ha->host_no, __func__));
2977 status = ha->isp_ops->reset_firmware(ha);
2978 if (status == QLA_SUCCESS) {
2979 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2980 qla4xxx_cmd_wait(ha);
2981 ha->isp_ops->disable_intrs(ha);
2982 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2983 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2984 } else {
2985 /* If the stop_firmware fails then
2986 * reset the entire chip */
2987 reset_chip = 1;
2988 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2989 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2990 }
2991 }
2992
2993 /* Issue full chip reset if recovering from a catastrophic error,
2994 * or if stop_firmware fails for ISP-8xxx.
2995 * This is the default case for ISP-4xxx */
2996 if (is_qla40XX(ha) || reset_chip) {
2997 if (is_qla40XX(ha))
2998 goto chip_reset;
2999
3000 /* Check if 8XXX firmware is alive or not
3001 * We may have arrived here from NEED_RESET
3002 * detection only */
3003 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3004 goto chip_reset;
3005
3006 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3007 while (time_before(jiffies, wait)) {
3008 if (qla4_8xxx_check_fw_alive(ha)) {
3009 qla4xxx_mailbox_premature_completion(ha);
3010 break;
3011 }
3012
3013 set_current_state(TASK_UNINTERRUPTIBLE);
3014 schedule_timeout(HZ);
3015 }
3016 chip_reset:
3017 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3018 qla4xxx_cmd_wait(ha);
3019
3020 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3021 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3022 DEBUG2(ql4_printk(KERN_INFO, ha,
3023 "scsi%ld: %s - Performing chip reset..\n",
3024 ha->host_no, __func__));
3025 status = ha->isp_ops->reset_chip(ha);
3026 }
3027
3028 /* Flush any pending ddb changed AENs */
3029 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3030
3031 recover_ha_init_adapter:
3032 /* Upon successful firmware/chip reset, re-initialize the adapter */
3033 if (status == QLA_SUCCESS) {
3034 /* For ISP-4xxx, force function 1 to always initialize
3035 * before function 3 to prevent both funcions from
3036 * stepping on top of the other */
3037 if (is_qla40XX(ha) && (ha->mac_index == 3))
3038 ssleep(6);
3039
3040 /* NOTE: AF_ONLINE flag set upon successful completion of
3041 * qla4xxx_initialize_adapter */
3042 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3043 }
3044
3045 /* Retry failed adapter initialization, if necessary
3046 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3047 * case to prevent ping-pong resets between functions */
3048 if (!test_bit(AF_ONLINE, &ha->flags) &&
3049 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3050 /* Adapter initialization failed, see if we can retry
3051 * resetting the ha.
3052 * Since we don't want to block the DPC for too long
3053 * with multiple resets in the same thread,
3054 * utilize DPC to retry */
3055 if (is_qla80XX(ha)) {
3056 ha->isp_ops->idc_lock(ha);
3057 dev_state = qla4_8xxx_rd_direct(ha,
3058 QLA8XXX_CRB_DEV_STATE);
3059 ha->isp_ops->idc_unlock(ha);
3060 if (dev_state == QLA8XXX_DEV_FAILED) {
3061 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3062 "recover adapter. H/W is in Failed "
3063 "state\n", __func__);
3064 qla4xxx_dead_adapter_cleanup(ha);
3065 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3066 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3067 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3068 &ha->dpc_flags);
3069 status = QLA_ERROR;
3070
3071 goto exit_recover;
3072 }
3073 }
3074
3075 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3076 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3077 DEBUG2(printk("scsi%ld: recover adapter - retrying "
3078 "(%d) more times\n", ha->host_no,
3079 ha->retry_reset_ha_cnt));
3080 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3081 status = QLA_ERROR;
3082 } else {
3083 if (ha->retry_reset_ha_cnt > 0) {
3084 /* Schedule another Reset HA--DPC will retry */
3085 ha->retry_reset_ha_cnt--;
3086 DEBUG2(printk("scsi%ld: recover adapter - "
3087 "retry remaining %d\n",
3088 ha->host_no,
3089 ha->retry_reset_ha_cnt));
3090 status = QLA_ERROR;
3091 }
3092
3093 if (ha->retry_reset_ha_cnt == 0) {
3094 /* Recover adapter retries have been exhausted.
3095 * Adapter DEAD */
3096 DEBUG2(printk("scsi%ld: recover adapter "
3097 "failed - board disabled\n",
3098 ha->host_no));
3099 qla4xxx_dead_adapter_cleanup(ha);
3100 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3101 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3102 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3103 &ha->dpc_flags);
3104 status = QLA_ERROR;
3105 }
3106 }
3107 } else {
3108 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3109 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3110 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3111 }
3112
3113 exit_recover:
3114 ha->adapter_error_count++;
3115
3116 if (test_bit(AF_ONLINE, &ha->flags))
3117 ha->isp_ops->enable_intrs(ha);
3118
3119 scsi_unblock_requests(ha->host);
3120
3121 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3122 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3123 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3124
3125 return status;
3126 }
3127
3128 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3129 {
3130 struct iscsi_session *sess;
3131 struct ddb_entry *ddb_entry;
3132 struct scsi_qla_host *ha;
3133
3134 sess = cls_session->dd_data;
3135 ddb_entry = sess->dd_data;
3136 ha = ddb_entry->ha;
3137 if (!iscsi_is_session_online(cls_session)) {
3138 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3139 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3140 " unblock session\n", ha->host_no, __func__,
3141 ddb_entry->fw_ddb_index);
3142 iscsi_unblock_session(ddb_entry->sess);
3143 } else {
3144 /* Trigger relogin */
3145 if (ddb_entry->ddb_type == FLASH_DDB) {
3146 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3147 qla4xxx_arm_relogin_timer(ddb_entry);
3148 } else
3149 iscsi_session_failure(cls_session->dd_data,
3150 ISCSI_ERR_CONN_FAILED);
3151 }
3152 }
3153 }
3154
3155 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3156 {
3157 struct iscsi_session *sess;
3158 struct ddb_entry *ddb_entry;
3159 struct scsi_qla_host *ha;
3160
3161 sess = cls_session->dd_data;
3162 ddb_entry = sess->dd_data;
3163 ha = ddb_entry->ha;
3164 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3165 " unblock session\n", ha->host_no, __func__,
3166 ddb_entry->fw_ddb_index);
3167
3168 iscsi_unblock_session(ddb_entry->sess);
3169
3170 /* Start scan target */
3171 if (test_bit(AF_ONLINE, &ha->flags)) {
3172 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3173 " start scan\n", ha->host_no, __func__,
3174 ddb_entry->fw_ddb_index);
3175 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3176 }
3177 return QLA_SUCCESS;
3178 }
3179
3180 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3181 {
3182 struct iscsi_session *sess;
3183 struct ddb_entry *ddb_entry;
3184 struct scsi_qla_host *ha;
3185 int status = QLA_SUCCESS;
3186
3187 sess = cls_session->dd_data;
3188 ddb_entry = sess->dd_data;
3189 ha = ddb_entry->ha;
3190 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3191 " unblock user space session\n", ha->host_no, __func__,
3192 ddb_entry->fw_ddb_index);
3193
3194 if (!iscsi_is_session_online(cls_session)) {
3195 iscsi_conn_start(ddb_entry->conn);
3196 iscsi_conn_login_event(ddb_entry->conn,
3197 ISCSI_CONN_STATE_LOGGED_IN);
3198 } else {
3199 ql4_printk(KERN_INFO, ha,
3200 "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3201 ha->host_no, __func__, ddb_entry->fw_ddb_index,
3202 cls_session->sid);
3203 status = QLA_ERROR;
3204 }
3205
3206 return status;
3207 }
3208
3209 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3210 {
3211 iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3212 }
3213
3214 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3215 {
3216 uint16_t relogin_timer;
3217 struct iscsi_session *sess;
3218 struct ddb_entry *ddb_entry;
3219 struct scsi_qla_host *ha;
3220
3221 sess = cls_sess->dd_data;
3222 ddb_entry = sess->dd_data;
3223 ha = ddb_entry->ha;
3224
3225 relogin_timer = max(ddb_entry->default_relogin_timeout,
3226 (uint16_t)RELOGIN_TOV);
3227 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3228
3229 DEBUG2(ql4_printk(KERN_INFO, ha,
3230 "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3231 ddb_entry->fw_ddb_index, relogin_timer));
3232
3233 qla4xxx_login_flash_ddb(cls_sess);
3234 }
3235
3236 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3237 {
3238 struct iscsi_session *sess;
3239 struct ddb_entry *ddb_entry;
3240 struct scsi_qla_host *ha;
3241
3242 sess = cls_sess->dd_data;
3243 ddb_entry = sess->dd_data;
3244 ha = ddb_entry->ha;
3245
3246 if (!(ddb_entry->ddb_type == FLASH_DDB))
3247 return;
3248
3249 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3250 !iscsi_is_session_online(cls_sess)) {
3251 DEBUG2(ql4_printk(KERN_INFO, ha,
3252 "relogin issued\n"));
3253 qla4xxx_relogin_flash_ddb(cls_sess);
3254 }
3255 }
3256
3257 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3258 {
3259 if (ha->dpc_thread)
3260 queue_work(ha->dpc_thread, &ha->dpc_work);
3261 }
3262
3263 static struct qla4_work_evt *
3264 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3265 enum qla4_work_type type)
3266 {
3267 struct qla4_work_evt *e;
3268 uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3269
3270 e = kzalloc(size, GFP_ATOMIC);
3271 if (!e)
3272 return NULL;
3273
3274 INIT_LIST_HEAD(&e->list);
3275 e->type = type;
3276 return e;
3277 }
3278
3279 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3280 struct qla4_work_evt *e)
3281 {
3282 unsigned long flags;
3283
3284 spin_lock_irqsave(&ha->work_lock, flags);
3285 list_add_tail(&e->list, &ha->work_list);
3286 spin_unlock_irqrestore(&ha->work_lock, flags);
3287 qla4xxx_wake_dpc(ha);
3288 }
3289
3290 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3291 enum iscsi_host_event_code aen_code,
3292 uint32_t data_size, uint8_t *data)
3293 {
3294 struct qla4_work_evt *e;
3295
3296 e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3297 if (!e)
3298 return QLA_ERROR;
3299
3300 e->u.aen.code = aen_code;
3301 e->u.aen.data_size = data_size;
3302 memcpy(e->u.aen.data, data, data_size);
3303
3304 qla4xxx_post_work(ha, e);
3305
3306 return QLA_SUCCESS;
3307 }
3308
3309 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3310 uint32_t status, uint32_t pid,
3311 uint32_t data_size, uint8_t *data)
3312 {
3313 struct qla4_work_evt *e;
3314
3315 e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3316 if (!e)
3317 return QLA_ERROR;
3318
3319 e->u.ping.status = status;
3320 e->u.ping.pid = pid;
3321 e->u.ping.data_size = data_size;
3322 memcpy(e->u.ping.data, data, data_size);
3323
3324 qla4xxx_post_work(ha, e);
3325
3326 return QLA_SUCCESS;
3327 }
3328
3329 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3330 {
3331 struct qla4_work_evt *e, *tmp;
3332 unsigned long flags;
3333 LIST_HEAD(work);
3334
3335 spin_lock_irqsave(&ha->work_lock, flags);
3336 list_splice_init(&ha->work_list, &work);
3337 spin_unlock_irqrestore(&ha->work_lock, flags);
3338
3339 list_for_each_entry_safe(e, tmp, &work, list) {
3340 list_del_init(&e->list);
3341
3342 switch (e->type) {
3343 case QLA4_EVENT_AEN:
3344 iscsi_post_host_event(ha->host_no,
3345 &qla4xxx_iscsi_transport,
3346 e->u.aen.code,
3347 e->u.aen.data_size,
3348 e->u.aen.data);
3349 break;
3350 case QLA4_EVENT_PING_STATUS:
3351 iscsi_ping_comp_event(ha->host_no,
3352 &qla4xxx_iscsi_transport,
3353 e->u.ping.status,
3354 e->u.ping.pid,
3355 e->u.ping.data_size,
3356 e->u.ping.data);
3357 break;
3358 default:
3359 ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3360 "supported", e->type);
3361 }
3362 kfree(e);
3363 }
3364 }
3365
3366 /**
3367 * qla4xxx_do_dpc - dpc routine
3368 * @data: in our case pointer to adapter structure
3369 *
3370 * This routine is a task that is schedule by the interrupt handler
3371 * to perform the background processing for interrupts. We put it
3372 * on a task queue that is consumed whenever the scheduler runs; that's
3373 * so you can do anything (i.e. put the process to sleep etc). In fact,
3374 * the mid-level tries to sleep when it reaches the driver threshold
3375 * "host->can_queue". This can cause a panic if we were in our interrupt code.
3376 **/
3377 static void qla4xxx_do_dpc(struct work_struct *work)
3378 {
3379 struct scsi_qla_host *ha =
3380 container_of(work, struct scsi_qla_host, dpc_work);
3381 int status = QLA_ERROR;
3382
3383 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3384 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3385 ha->host_no, __func__, ha->flags, ha->dpc_flags))
3386
3387 /* Initialization not yet finished. Don't do anything yet. */
3388 if (!test_bit(AF_INIT_DONE, &ha->flags))
3389 return;
3390
3391 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3392 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3393 ha->host_no, __func__, ha->flags));
3394 return;
3395 }
3396
3397 /* post events to application */
3398 qla4xxx_do_work(ha);
3399
3400 if (is_qla80XX(ha)) {
3401 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3402 if (is_qla8032(ha)) {
3403 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3404 __func__);
3405 /* disable pause frame for ISP83xx */
3406 qla4_83xx_disable_pause(ha);
3407 }
3408
3409 ha->isp_ops->idc_lock(ha);
3410 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3411 QLA8XXX_DEV_FAILED);
3412 ha->isp_ops->idc_unlock(ha);
3413 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3414 qla4_8xxx_device_state_handler(ha);
3415 }
3416
3417 if (test_and_clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags))
3418 qla4_83xx_post_idc_ack(ha);
3419
3420 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3421 qla4_8xxx_need_qsnt_handler(ha);
3422 }
3423 }
3424
3425 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3426 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3427 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3428 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3429 if ((is_qla8022(ha) && ql4xdontresethba) ||
3430 (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
3431 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3432 ha->host_no, __func__));
3433 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3434 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3435 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3436 goto dpc_post_reset_ha;
3437 }
3438 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3439 test_bit(DPC_RESET_HA, &ha->dpc_flags))
3440 qla4xxx_recover_adapter(ha);
3441
3442 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3443 uint8_t wait_time = RESET_INTR_TOV;
3444
3445 while ((readw(&ha->reg->ctrl_status) &
3446 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3447 if (--wait_time == 0)
3448 break;
3449 msleep(1000);
3450 }
3451 if (wait_time == 0)
3452 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3453 "bit not cleared-- resetting\n",
3454 ha->host_no, __func__));
3455 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3456 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3457 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3458 status = qla4xxx_recover_adapter(ha);
3459 }
3460 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3461 if (status == QLA_SUCCESS)
3462 ha->isp_ops->enable_intrs(ha);
3463 }
3464 }
3465
3466 dpc_post_reset_ha:
3467 /* ---- process AEN? --- */
3468 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3469 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3470
3471 /* ---- Get DHCP IP Address? --- */
3472 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3473 qla4xxx_get_dhcp_ip_address(ha);
3474
3475 /* ---- relogin device? --- */
3476 if (adapter_up(ha) &&
3477 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3478 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3479 }
3480
3481 /* ---- link change? --- */
3482 if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3483 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3484 /* ---- link down? --- */
3485 qla4xxx_mark_all_devices_missing(ha);
3486 } else {
3487 /* ---- link up? --- *
3488 * F/W will auto login to all devices ONLY ONCE after
3489 * link up during driver initialization and runtime
3490 * fatal error recovery. Therefore, the driver must
3491 * manually relogin to devices when recovering from
3492 * connection failures, logouts, expired KATO, etc. */
3493 if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3494 qla4xxx_build_ddb_list(ha, ha->is_reset);
3495 iscsi_host_for_each_session(ha->host,
3496 qla4xxx_login_flash_ddb);
3497 } else
3498 qla4xxx_relogin_all_devices(ha);
3499 }
3500 }
3501 }
3502
3503 /**
3504 * qla4xxx_free_adapter - release the adapter
3505 * @ha: pointer to adapter structure
3506 **/
3507 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3508 {
3509 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3510
3511 if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
3512 /* Turn-off interrupts on the card. */
3513 ha->isp_ops->disable_intrs(ha);
3514 }
3515
3516 if (is_qla40XX(ha)) {
3517 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3518 &ha->reg->ctrl_status);
3519 readl(&ha->reg->ctrl_status);
3520 } else if (is_qla8022(ha)) {
3521 writel(0, &ha->qla4_82xx_reg->host_int);
3522 readl(&ha->qla4_82xx_reg->host_int);
3523 } else if (is_qla8032(ha)) {
3524 writel(0, &ha->qla4_83xx_reg->risc_intr);
3525 readl(&ha->qla4_83xx_reg->risc_intr);
3526 }
3527
3528 /* Remove timer thread, if present */
3529 if (ha->timer_active)
3530 qla4xxx_stop_timer(ha);
3531
3532 /* Kill the kernel thread for this host */
3533 if (ha->dpc_thread)
3534 destroy_workqueue(ha->dpc_thread);
3535
3536 /* Kill the kernel thread for this host */
3537 if (ha->task_wq)
3538 destroy_workqueue(ha->task_wq);
3539
3540 /* Put firmware in known state */
3541 ha->isp_ops->reset_firmware(ha);
3542
3543 if (is_qla80XX(ha)) {
3544 ha->isp_ops->idc_lock(ha);
3545 qla4_8xxx_clear_drv_active(ha);
3546 ha->isp_ops->idc_unlock(ha);
3547 }
3548
3549 /* Detach interrupts */
3550 if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
3551 qla4xxx_free_irqs(ha);
3552
3553 /* free extra memory */
3554 qla4xxx_mem_free(ha);
3555 }
3556
3557 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3558 {
3559 int status = 0;
3560 unsigned long mem_base, mem_len, db_base, db_len;
3561 struct pci_dev *pdev = ha->pdev;
3562
3563 status = pci_request_regions(pdev, DRIVER_NAME);
3564 if (status) {
3565 printk(KERN_WARNING
3566 "scsi(%ld) Failed to reserve PIO regions (%s) "
3567 "status=%d\n", ha->host_no, pci_name(pdev), status);
3568 goto iospace_error_exit;
3569 }
3570
3571 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3572 __func__, pdev->revision));
3573 ha->revision_id = pdev->revision;
3574
3575 /* remap phys address */
3576 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3577 mem_len = pci_resource_len(pdev, 0);
3578 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3579 __func__, mem_base, mem_len));
3580
3581 /* mapping of pcibase pointer */
3582 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3583 if (!ha->nx_pcibase) {
3584 printk(KERN_ERR
3585 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3586 pci_release_regions(ha->pdev);
3587 goto iospace_error_exit;
3588 }
3589
3590 /* Mapping of IO base pointer, door bell read and write pointer */
3591
3592 /* mapping of IO base pointer */
3593 if (is_qla8022(ha)) {
3594 ha->qla4_82xx_reg = (struct device_reg_82xx __iomem *)
3595 ((uint8_t *)ha->nx_pcibase + 0xbc000 +
3596 (ha->pdev->devfn << 11));
3597 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3598 QLA82XX_CAM_RAM_DB2);
3599 } else if (is_qla8032(ha)) {
3600 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
3601 ((uint8_t *)ha->nx_pcibase);
3602 }
3603
3604 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
3605 db_len = pci_resource_len(pdev, 4);
3606
3607 return 0;
3608 iospace_error_exit:
3609 return -ENOMEM;
3610 }
3611
3612 /***
3613 * qla4xxx_iospace_config - maps registers
3614 * @ha: pointer to adapter structure
3615 *
3616 * This routines maps HBA's registers from the pci address space
3617 * into the kernel virtual address space for memory mapped i/o.
3618 **/
3619 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3620 {
3621 unsigned long pio, pio_len, pio_flags;
3622 unsigned long mmio, mmio_len, mmio_flags;
3623
3624 pio = pci_resource_start(ha->pdev, 0);
3625 pio_len = pci_resource_len(ha->pdev, 0);
3626 pio_flags = pci_resource_flags(ha->pdev, 0);
3627 if (pio_flags & IORESOURCE_IO) {
3628 if (pio_len < MIN_IOBASE_LEN) {
3629 ql4_printk(KERN_WARNING, ha,
3630 "Invalid PCI I/O region size\n");
3631 pio = 0;
3632 }
3633 } else {
3634 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3635 pio = 0;
3636 }
3637
3638 /* Use MMIO operations for all accesses. */
3639 mmio = pci_resource_start(ha->pdev, 1);
3640 mmio_len = pci_resource_len(ha->pdev, 1);
3641 mmio_flags = pci_resource_flags(ha->pdev, 1);
3642
3643 if (!(mmio_flags & IORESOURCE_MEM)) {
3644 ql4_printk(KERN_ERR, ha,
3645 "region #0 not an MMIO resource, aborting\n");
3646
3647 goto iospace_error_exit;
3648 }
3649
3650 if (mmio_len < MIN_IOBASE_LEN) {
3651 ql4_printk(KERN_ERR, ha,
3652 "Invalid PCI mem region size, aborting\n");
3653 goto iospace_error_exit;
3654 }
3655
3656 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3657 ql4_printk(KERN_WARNING, ha,
3658 "Failed to reserve PIO/MMIO regions\n");
3659
3660 goto iospace_error_exit;
3661 }
3662
3663 ha->pio_address = pio;
3664 ha->pio_length = pio_len;
3665 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3666 if (!ha->reg) {
3667 ql4_printk(KERN_ERR, ha,
3668 "cannot remap MMIO, aborting\n");
3669
3670 goto iospace_error_exit;
3671 }
3672
3673 return 0;
3674
3675 iospace_error_exit:
3676 return -ENOMEM;
3677 }
3678
3679 static struct isp_operations qla4xxx_isp_ops = {
3680 .iospace_config = qla4xxx_iospace_config,
3681 .pci_config = qla4xxx_pci_config,
3682 .disable_intrs = qla4xxx_disable_intrs,
3683 .enable_intrs = qla4xxx_enable_intrs,
3684 .start_firmware = qla4xxx_start_firmware,
3685 .intr_handler = qla4xxx_intr_handler,
3686 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3687 .reset_chip = qla4xxx_soft_reset,
3688 .reset_firmware = qla4xxx_hw_reset,
3689 .queue_iocb = qla4xxx_queue_iocb,
3690 .complete_iocb = qla4xxx_complete_iocb,
3691 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
3692 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
3693 .get_sys_info = qla4xxx_get_sys_info,
3694 .queue_mailbox_command = qla4xxx_queue_mbox_cmd,
3695 .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
3696 };
3697
3698 static struct isp_operations qla4_82xx_isp_ops = {
3699 .iospace_config = qla4_8xxx_iospace_config,
3700 .pci_config = qla4_8xxx_pci_config,
3701 .disable_intrs = qla4_82xx_disable_intrs,
3702 .enable_intrs = qla4_82xx_enable_intrs,
3703 .start_firmware = qla4_8xxx_load_risc,
3704 .restart_firmware = qla4_82xx_try_start_fw,
3705 .intr_handler = qla4_82xx_intr_handler,
3706 .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
3707 .need_reset = qla4_8xxx_need_reset,
3708 .reset_chip = qla4_82xx_isp_reset,
3709 .reset_firmware = qla4_8xxx_stop_firmware,
3710 .queue_iocb = qla4_82xx_queue_iocb,
3711 .complete_iocb = qla4_82xx_complete_iocb,
3712 .rd_shdw_req_q_out = qla4_82xx_rd_shdw_req_q_out,
3713 .rd_shdw_rsp_q_in = qla4_82xx_rd_shdw_rsp_q_in,
3714 .get_sys_info = qla4_8xxx_get_sys_info,
3715 .rd_reg_direct = qla4_82xx_rd_32,
3716 .wr_reg_direct = qla4_82xx_wr_32,
3717 .rd_reg_indirect = qla4_82xx_md_rd_32,
3718 .wr_reg_indirect = qla4_82xx_md_wr_32,
3719 .idc_lock = qla4_82xx_idc_lock,
3720 .idc_unlock = qla4_82xx_idc_unlock,
3721 .rom_lock_recovery = qla4_82xx_rom_lock_recovery,
3722 .queue_mailbox_command = qla4_82xx_queue_mbox_cmd,
3723 .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
3724 };
3725
3726 static struct isp_operations qla4_83xx_isp_ops = {
3727 .iospace_config = qla4_8xxx_iospace_config,
3728 .pci_config = qla4_8xxx_pci_config,
3729 .disable_intrs = qla4_83xx_disable_intrs,
3730 .enable_intrs = qla4_83xx_enable_intrs,
3731 .start_firmware = qla4_8xxx_load_risc,
3732 .restart_firmware = qla4_83xx_start_firmware,
3733 .intr_handler = qla4_83xx_intr_handler,
3734 .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
3735 .need_reset = qla4_8xxx_need_reset,
3736 .reset_chip = qla4_83xx_isp_reset,
3737 .reset_firmware = qla4_8xxx_stop_firmware,
3738 .queue_iocb = qla4_83xx_queue_iocb,
3739 .complete_iocb = qla4_83xx_complete_iocb,
3740 .rd_shdw_req_q_out = qla4_83xx_rd_shdw_req_q_out,
3741 .rd_shdw_rsp_q_in = qla4_83xx_rd_shdw_rsp_q_in,
3742 .get_sys_info = qla4_8xxx_get_sys_info,
3743 .rd_reg_direct = qla4_83xx_rd_reg,
3744 .wr_reg_direct = qla4_83xx_wr_reg,
3745 .rd_reg_indirect = qla4_83xx_rd_reg_indirect,
3746 .wr_reg_indirect = qla4_83xx_wr_reg_indirect,
3747 .idc_lock = qla4_83xx_drv_lock,
3748 .idc_unlock = qla4_83xx_drv_unlock,
3749 .rom_lock_recovery = qla4_83xx_rom_lock_recovery,
3750 .queue_mailbox_command = qla4_83xx_queue_mbox_cmd,
3751 .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
3752 };
3753
3754 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3755 {
3756 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3757 }
3758
3759 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3760 {
3761 return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
3762 }
3763
3764 uint16_t qla4_83xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3765 {
3766 return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->req_q_out));
3767 }
3768
3769 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3770 {
3771 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3772 }
3773
3774 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3775 {
3776 return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
3777 }
3778
3779 uint16_t qla4_83xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3780 {
3781 return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->rsp_q_in));
3782 }
3783
3784 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3785 {
3786 struct scsi_qla_host *ha = data;
3787 char *str = buf;
3788 int rc;
3789
3790 switch (type) {
3791 case ISCSI_BOOT_ETH_FLAGS:
3792 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3793 break;
3794 case ISCSI_BOOT_ETH_INDEX:
3795 rc = sprintf(str, "0\n");
3796 break;
3797 case ISCSI_BOOT_ETH_MAC:
3798 rc = sysfs_format_mac(str, ha->my_mac,
3799 MAC_ADDR_LEN);
3800 break;
3801 default:
3802 rc = -ENOSYS;
3803 break;
3804 }
3805 return rc;
3806 }
3807
3808 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3809 {
3810 int rc;
3811
3812 switch (type) {
3813 case ISCSI_BOOT_ETH_FLAGS:
3814 case ISCSI_BOOT_ETH_MAC:
3815 case ISCSI_BOOT_ETH_INDEX:
3816 rc = S_IRUGO;
3817 break;
3818 default:
3819 rc = 0;
3820 break;
3821 }
3822 return rc;
3823 }
3824
3825 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3826 {
3827 struct scsi_qla_host *ha = data;
3828 char *str = buf;
3829 int rc;
3830
3831 switch (type) {
3832 case ISCSI_BOOT_INI_INITIATOR_NAME:
3833 rc = sprintf(str, "%s\n", ha->name_string);
3834 break;
3835 default:
3836 rc = -ENOSYS;
3837 break;
3838 }
3839 return rc;
3840 }
3841
3842 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3843 {
3844 int rc;
3845
3846 switch (type) {
3847 case ISCSI_BOOT_INI_INITIATOR_NAME:
3848 rc = S_IRUGO;
3849 break;
3850 default:
3851 rc = 0;
3852 break;
3853 }
3854 return rc;
3855 }
3856
3857 static ssize_t
3858 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3859 char *buf)
3860 {
3861 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3862 char *str = buf;
3863 int rc;
3864
3865 switch (type) {
3866 case ISCSI_BOOT_TGT_NAME:
3867 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3868 break;
3869 case ISCSI_BOOT_TGT_IP_ADDR:
3870 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3871 rc = sprintf(buf, "%pI4\n",
3872 &boot_conn->dest_ipaddr.ip_address);
3873 else
3874 rc = sprintf(str, "%pI6\n",
3875 &boot_conn->dest_ipaddr.ip_address);
3876 break;
3877 case ISCSI_BOOT_TGT_PORT:
3878 rc = sprintf(str, "%d\n", boot_conn->dest_port);
3879 break;
3880 case ISCSI_BOOT_TGT_CHAP_NAME:
3881 rc = sprintf(str, "%.*s\n",
3882 boot_conn->chap.target_chap_name_length,
3883 (char *)&boot_conn->chap.target_chap_name);
3884 break;
3885 case ISCSI_BOOT_TGT_CHAP_SECRET:
3886 rc = sprintf(str, "%.*s\n",
3887 boot_conn->chap.target_secret_length,
3888 (char *)&boot_conn->chap.target_secret);
3889 break;
3890 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3891 rc = sprintf(str, "%.*s\n",
3892 boot_conn->chap.intr_chap_name_length,
3893 (char *)&boot_conn->chap.intr_chap_name);
3894 break;
3895 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3896 rc = sprintf(str, "%.*s\n",
3897 boot_conn->chap.intr_secret_length,
3898 (char *)&boot_conn->chap.intr_secret);
3899 break;
3900 case ISCSI_BOOT_TGT_FLAGS:
3901 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3902 break;
3903 case ISCSI_BOOT_TGT_NIC_ASSOC:
3904 rc = sprintf(str, "0\n");
3905 break;
3906 default:
3907 rc = -ENOSYS;
3908 break;
3909 }
3910 return rc;
3911 }
3912
3913 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3914 {
3915 struct scsi_qla_host *ha = data;
3916 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3917
3918 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3919 }
3920
3921 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3922 {
3923 struct scsi_qla_host *ha = data;
3924 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3925
3926 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3927 }
3928
3929 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3930 {
3931 int rc;
3932
3933 switch (type) {
3934 case ISCSI_BOOT_TGT_NAME:
3935 case ISCSI_BOOT_TGT_IP_ADDR:
3936 case ISCSI_BOOT_TGT_PORT:
3937 case ISCSI_BOOT_TGT_CHAP_NAME:
3938 case ISCSI_BOOT_TGT_CHAP_SECRET:
3939 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3940 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3941 case ISCSI_BOOT_TGT_NIC_ASSOC:
3942 case ISCSI_BOOT_TGT_FLAGS:
3943 rc = S_IRUGO;
3944 break;
3945 default:
3946 rc = 0;
3947 break;
3948 }
3949 return rc;
3950 }
3951
3952 static void qla4xxx_boot_release(void *data)
3953 {
3954 struct scsi_qla_host *ha = data;
3955
3956 scsi_host_put(ha->host);
3957 }
3958
3959 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3960 {
3961 dma_addr_t buf_dma;
3962 uint32_t addr, pri_addr, sec_addr;
3963 uint32_t offset;
3964 uint16_t func_num;
3965 uint8_t val;
3966 uint8_t *buf = NULL;
3967 size_t size = 13 * sizeof(uint8_t);
3968 int ret = QLA_SUCCESS;
3969
3970 func_num = PCI_FUNC(ha->pdev->devfn);
3971
3972 ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3973 __func__, ha->pdev->device, func_num);
3974
3975 if (is_qla40XX(ha)) {
3976 if (func_num == 1) {
3977 addr = NVRAM_PORT0_BOOT_MODE;
3978 pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3979 sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3980 } else if (func_num == 3) {
3981 addr = NVRAM_PORT1_BOOT_MODE;
3982 pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3983 sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3984 } else {
3985 ret = QLA_ERROR;
3986 goto exit_boot_info;
3987 }
3988
3989 /* Check Boot Mode */
3990 val = rd_nvram_byte(ha, addr);
3991 if (!(val & 0x07)) {
3992 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
3993 "options : 0x%x\n", __func__, val));
3994 ret = QLA_ERROR;
3995 goto exit_boot_info;
3996 }
3997
3998 /* get primary valid target index */
3999 val = rd_nvram_byte(ha, pri_addr);
4000 if (val & BIT_7)
4001 ddb_index[0] = (val & 0x7f);
4002
4003 /* get secondary valid target index */
4004 val = rd_nvram_byte(ha, sec_addr);
4005 if (val & BIT_7)
4006 ddb_index[1] = (val & 0x7f);
4007
4008 } else if (is_qla8022(ha)) {
4009 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4010 &buf_dma, GFP_KERNEL);
4011 if (!buf) {
4012 DEBUG2(ql4_printk(KERN_ERR, ha,
4013 "%s: Unable to allocate dma buffer\n",
4014 __func__));
4015 ret = QLA_ERROR;
4016 goto exit_boot_info;
4017 }
4018
4019 if (ha->port_num == 0)
4020 offset = BOOT_PARAM_OFFSET_PORT0;
4021 else if (ha->port_num == 1)
4022 offset = BOOT_PARAM_OFFSET_PORT1;
4023 else {
4024 ret = QLA_ERROR;
4025 goto exit_boot_info_free;
4026 }
4027 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4028 offset;
4029 if (qla4xxx_get_flash(ha, buf_dma, addr,
4030 13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4031 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4032 " failed\n", ha->host_no, __func__));
4033 ret = QLA_ERROR;
4034 goto exit_boot_info_free;
4035 }
4036 /* Check Boot Mode */
4037 if (!(buf[1] & 0x07)) {
4038 DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4039 " : 0x%x\n", buf[1]));
4040 ret = QLA_ERROR;
4041 goto exit_boot_info_free;
4042 }
4043
4044 /* get primary valid target index */
4045 if (buf[2] & BIT_7)
4046 ddb_index[0] = buf[2] & 0x7f;
4047
4048 /* get secondary valid target index */
4049 if (buf[11] & BIT_7)
4050 ddb_index[1] = buf[11] & 0x7f;
4051 } else {
4052 ret = QLA_ERROR;
4053 goto exit_boot_info;
4054 }
4055
4056 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4057 " target ID %d\n", __func__, ddb_index[0],
4058 ddb_index[1]));
4059
4060 exit_boot_info_free:
4061 dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4062 exit_boot_info:
4063 ha->pri_ddb_idx = ddb_index[0];
4064 ha->sec_ddb_idx = ddb_index[1];
4065 return ret;
4066 }
4067
4068 /**
4069 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4070 * @ha: pointer to adapter structure
4071 * @username: CHAP username to be returned
4072 * @password: CHAP password to be returned
4073 *
4074 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4075 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4076 * So from the CHAP cache find the first BIDI CHAP entry and set it
4077 * to the boot record in sysfs.
4078 **/
4079 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4080 char *password)
4081 {
4082 int i, ret = -EINVAL;
4083 int max_chap_entries = 0;
4084 struct ql4_chap_table *chap_table;
4085
4086 if (is_qla8022(ha))
4087 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4088 sizeof(struct ql4_chap_table);
4089 else
4090 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4091
4092 if (!ha->chap_list) {
4093 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4094 return ret;
4095 }
4096
4097 mutex_lock(&ha->chap_sem);
4098 for (i = 0; i < max_chap_entries; i++) {
4099 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4100 if (chap_table->cookie !=
4101 __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4102 continue;
4103 }
4104
4105 if (chap_table->flags & BIT_7) /* local */
4106 continue;
4107
4108 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4109 continue;
4110
4111 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4112 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4113 ret = 0;
4114 break;
4115 }
4116 mutex_unlock(&ha->chap_sem);
4117
4118 return ret;
4119 }
4120
4121
4122 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4123 struct ql4_boot_session_info *boot_sess,
4124 uint16_t ddb_index)
4125 {
4126 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4127 struct dev_db_entry *fw_ddb_entry;
4128 dma_addr_t fw_ddb_entry_dma;
4129 uint16_t idx;
4130 uint16_t options;
4131 int ret = QLA_SUCCESS;
4132
4133 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4134 &fw_ddb_entry_dma, GFP_KERNEL);
4135 if (!fw_ddb_entry) {
4136 DEBUG2(ql4_printk(KERN_ERR, ha,
4137 "%s: Unable to allocate dma buffer.\n",
4138 __func__));
4139 ret = QLA_ERROR;
4140 return ret;
4141 }
4142
4143 if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4144 fw_ddb_entry_dma, ddb_index)) {
4145 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4146 "index [%d]\n", __func__, ddb_index));
4147 ret = QLA_ERROR;
4148 goto exit_boot_target;
4149 }
4150
4151 /* Update target name and IP from DDB */
4152 memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4153 min(sizeof(boot_sess->target_name),
4154 sizeof(fw_ddb_entry->iscsi_name)));
4155
4156 options = le16_to_cpu(fw_ddb_entry->options);
4157 if (options & DDB_OPT_IPV6_DEVICE) {
4158 memcpy(&boot_conn->dest_ipaddr.ip_address,
4159 &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4160 } else {
4161 boot_conn->dest_ipaddr.ip_type = 0x1;
4162 memcpy(&boot_conn->dest_ipaddr.ip_address,
4163 &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4164 }
4165
4166 boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4167
4168 /* update chap information */
4169 idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4170
4171 if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4172
4173 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4174
4175 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4176 target_chap_name,
4177 (char *)&boot_conn->chap.target_secret,
4178 idx);
4179 if (ret) {
4180 ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4181 ret = QLA_ERROR;
4182 goto exit_boot_target;
4183 }
4184
4185 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4186 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4187 }
4188
4189 if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4190
4191 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4192
4193 ret = qla4xxx_get_bidi_chap(ha,
4194 (char *)&boot_conn->chap.intr_chap_name,
4195 (char *)&boot_conn->chap.intr_secret);
4196
4197 if (ret) {
4198 ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4199 ret = QLA_ERROR;
4200 goto exit_boot_target;
4201 }
4202
4203 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4204 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4205 }
4206
4207 exit_boot_target:
4208 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4209 fw_ddb_entry, fw_ddb_entry_dma);
4210 return ret;
4211 }
4212
4213 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4214 {
4215 uint16_t ddb_index[2];
4216 int ret = QLA_ERROR;
4217 int rval;
4218
4219 memset(ddb_index, 0, sizeof(ddb_index));
4220 ddb_index[0] = 0xffff;
4221 ddb_index[1] = 0xffff;
4222 ret = get_fw_boot_info(ha, ddb_index);
4223 if (ret != QLA_SUCCESS) {
4224 DEBUG2(ql4_printk(KERN_INFO, ha,
4225 "%s: No boot target configured.\n", __func__));
4226 return ret;
4227 }
4228
4229 if (ql4xdisablesysfsboot)
4230 return QLA_SUCCESS;
4231
4232 if (ddb_index[0] == 0xffff)
4233 goto sec_target;
4234
4235 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4236 ddb_index[0]);
4237 if (rval != QLA_SUCCESS) {
4238 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4239 "configured\n", __func__));
4240 } else
4241 ret = QLA_SUCCESS;
4242
4243 sec_target:
4244 if (ddb_index[1] == 0xffff)
4245 goto exit_get_boot_info;
4246
4247 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4248 ddb_index[1]);
4249 if (rval != QLA_SUCCESS) {
4250 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4251 " configured\n", __func__));
4252 } else
4253 ret = QLA_SUCCESS;
4254
4255 exit_get_boot_info:
4256 return ret;
4257 }
4258
4259 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4260 {
4261 struct iscsi_boot_kobj *boot_kobj;
4262
4263 if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4264 return QLA_ERROR;
4265
4266 if (ql4xdisablesysfsboot) {
4267 ql4_printk(KERN_INFO, ha,
4268 "%s: syfsboot disabled - driver will trigger login "
4269 "and publish session for discovery .\n", __func__);
4270 return QLA_SUCCESS;
4271 }
4272
4273
4274 ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4275 if (!ha->boot_kset)
4276 goto kset_free;
4277
4278 if (!scsi_host_get(ha->host))
4279 goto kset_free;
4280 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4281 qla4xxx_show_boot_tgt_pri_info,
4282 qla4xxx_tgt_get_attr_visibility,
4283 qla4xxx_boot_release);
4284 if (!boot_kobj)
4285 goto put_host;
4286
4287 if (!scsi_host_get(ha->host))
4288 goto kset_free;
4289 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4290 qla4xxx_show_boot_tgt_sec_info,
4291 qla4xxx_tgt_get_attr_visibility,
4292 qla4xxx_boot_release);
4293 if (!boot_kobj)
4294 goto put_host;
4295
4296 if (!scsi_host_get(ha->host))
4297 goto kset_free;
4298 boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4299 qla4xxx_show_boot_ini_info,
4300 qla4xxx_ini_get_attr_visibility,
4301 qla4xxx_boot_release);
4302 if (!boot_kobj)
4303 goto put_host;
4304
4305 if (!scsi_host_get(ha->host))
4306 goto kset_free;
4307 boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4308 qla4xxx_show_boot_eth_info,
4309 qla4xxx_eth_get_attr_visibility,
4310 qla4xxx_boot_release);
4311 if (!boot_kobj)
4312 goto put_host;
4313
4314 return QLA_SUCCESS;
4315
4316 put_host:
4317 scsi_host_put(ha->host);
4318 kset_free:
4319 iscsi_boot_destroy_kset(ha->boot_kset);
4320 return -ENOMEM;
4321 }
4322
4323
4324 /**
4325 * qla4xxx_create chap_list - Create CHAP list from FLASH
4326 * @ha: pointer to adapter structure
4327 *
4328 * Read flash and make a list of CHAP entries, during login when a CHAP entry
4329 * is received, it will be checked in this list. If entry exist then the CHAP
4330 * entry index is set in the DDB. If CHAP entry does not exist in this list
4331 * then a new entry is added in FLASH in CHAP table and the index obtained is
4332 * used in the DDB.
4333 **/
4334 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4335 {
4336 int rval = 0;
4337 uint8_t *chap_flash_data = NULL;
4338 uint32_t offset;
4339 dma_addr_t chap_dma;
4340 uint32_t chap_size = 0;
4341
4342 if (is_qla40XX(ha))
4343 chap_size = MAX_CHAP_ENTRIES_40XX *
4344 sizeof(struct ql4_chap_table);
4345 else /* Single region contains CHAP info for both
4346 * ports which is divided into half for each port.
4347 */
4348 chap_size = ha->hw.flt_chap_size / 2;
4349
4350 chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4351 &chap_dma, GFP_KERNEL);
4352 if (!chap_flash_data) {
4353 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4354 return;
4355 }
4356 if (is_qla40XX(ha))
4357 offset = FLASH_CHAP_OFFSET;
4358 else {
4359 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4360 if (ha->port_num == 1)
4361 offset += chap_size;
4362 }
4363
4364 rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4365 if (rval != QLA_SUCCESS)
4366 goto exit_chap_list;
4367
4368 if (ha->chap_list == NULL)
4369 ha->chap_list = vmalloc(chap_size);
4370 if (ha->chap_list == NULL) {
4371 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4372 goto exit_chap_list;
4373 }
4374
4375 memcpy(ha->chap_list, chap_flash_data, chap_size);
4376
4377 exit_chap_list:
4378 dma_free_coherent(&ha->pdev->dev, chap_size,
4379 chap_flash_data, chap_dma);
4380 }
4381
4382 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4383 struct ql4_tuple_ddb *tddb)
4384 {
4385 struct scsi_qla_host *ha;
4386 struct iscsi_cls_session *cls_sess;
4387 struct iscsi_cls_conn *cls_conn;
4388 struct iscsi_session *sess;
4389 struct iscsi_conn *conn;
4390
4391 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4392 ha = ddb_entry->ha;
4393 cls_sess = ddb_entry->sess;
4394 sess = cls_sess->dd_data;
4395 cls_conn = ddb_entry->conn;
4396 conn = cls_conn->dd_data;
4397
4398 tddb->tpgt = sess->tpgt;
4399 tddb->port = conn->persistent_port;
4400 strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4401 strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4402 }
4403
4404 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4405 struct ql4_tuple_ddb *tddb,
4406 uint8_t *flash_isid)
4407 {
4408 uint16_t options = 0;
4409
4410 tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4411 memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4412 min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4413
4414 options = le16_to_cpu(fw_ddb_entry->options);
4415 if (options & DDB_OPT_IPV6_DEVICE)
4416 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4417 else
4418 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4419
4420 tddb->port = le16_to_cpu(fw_ddb_entry->port);
4421
4422 if (flash_isid == NULL)
4423 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4424 sizeof(tddb->isid));
4425 else
4426 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4427 }
4428
4429 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4430 struct ql4_tuple_ddb *old_tddb,
4431 struct ql4_tuple_ddb *new_tddb,
4432 uint8_t is_isid_compare)
4433 {
4434 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4435 return QLA_ERROR;
4436
4437 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4438 return QLA_ERROR;
4439
4440 if (old_tddb->port != new_tddb->port)
4441 return QLA_ERROR;
4442
4443 /* For multi sessions, driver generates the ISID, so do not compare
4444 * ISID in reset path since it would be a comparison between the
4445 * driver generated ISID and firmware generated ISID. This could
4446 * lead to adding duplicated DDBs in the list as driver generated
4447 * ISID would not match firmware generated ISID.
4448 */
4449 if (is_isid_compare) {
4450 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4451 "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4452 __func__, old_tddb->isid[5], old_tddb->isid[4],
4453 old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4454 old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4455 new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4456 new_tddb->isid[0]));
4457
4458 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4459 sizeof(old_tddb->isid)))
4460 return QLA_ERROR;
4461 }
4462
4463 DEBUG2(ql4_printk(KERN_INFO, ha,
4464 "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4465 old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4466 old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4467 new_tddb->ip_addr, new_tddb->iscsi_name));
4468
4469 return QLA_SUCCESS;
4470 }
4471
4472 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4473 struct dev_db_entry *fw_ddb_entry)
4474 {
4475 struct ddb_entry *ddb_entry;
4476 struct ql4_tuple_ddb *fw_tddb = NULL;
4477 struct ql4_tuple_ddb *tmp_tddb = NULL;
4478 int idx;
4479 int ret = QLA_ERROR;
4480
4481 fw_tddb = vzalloc(sizeof(*fw_tddb));
4482 if (!fw_tddb) {
4483 DEBUG2(ql4_printk(KERN_WARNING, ha,
4484 "Memory Allocation failed.\n"));
4485 ret = QLA_SUCCESS;
4486 goto exit_check;
4487 }
4488
4489 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4490 if (!tmp_tddb) {
4491 DEBUG2(ql4_printk(KERN_WARNING, ha,
4492 "Memory Allocation failed.\n"));
4493 ret = QLA_SUCCESS;
4494 goto exit_check;
4495 }
4496
4497 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4498
4499 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4500 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4501 if (ddb_entry == NULL)
4502 continue;
4503
4504 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4505 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4506 ret = QLA_SUCCESS; /* found */
4507 goto exit_check;
4508 }
4509 }
4510
4511 exit_check:
4512 if (fw_tddb)
4513 vfree(fw_tddb);
4514 if (tmp_tddb)
4515 vfree(tmp_tddb);
4516 return ret;
4517 }
4518
4519 /**
4520 * qla4xxx_check_existing_isid - check if target with same isid exist
4521 * in target list
4522 * @list_nt: list of target
4523 * @isid: isid to check
4524 *
4525 * This routine return QLA_SUCCESS if target with same isid exist
4526 **/
4527 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4528 {
4529 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4530 struct dev_db_entry *fw_ddb_entry;
4531
4532 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4533 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4534
4535 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4536 sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4537 return QLA_SUCCESS;
4538 }
4539 }
4540 return QLA_ERROR;
4541 }
4542
4543 /**
4544 * qla4xxx_update_isid - compare ddbs and updated isid
4545 * @ha: Pointer to host adapter structure.
4546 * @list_nt: list of nt target
4547 * @fw_ddb_entry: firmware ddb entry
4548 *
4549 * This routine update isid if ddbs have same iqn, same isid and
4550 * different IP addr.
4551 * Return QLA_SUCCESS if isid is updated.
4552 **/
4553 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4554 struct list_head *list_nt,
4555 struct dev_db_entry *fw_ddb_entry)
4556 {
4557 uint8_t base_value, i;
4558
4559 base_value = fw_ddb_entry->isid[1] & 0x1f;
4560 for (i = 0; i < 8; i++) {
4561 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4562 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4563 break;
4564 }
4565
4566 if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4567 return QLA_ERROR;
4568
4569 return QLA_SUCCESS;
4570 }
4571
4572 /**
4573 * qla4xxx_should_update_isid - check if isid need to update
4574 * @ha: Pointer to host adapter structure.
4575 * @old_tddb: ddb tuple
4576 * @new_tddb: ddb tuple
4577 *
4578 * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4579 * same isid
4580 **/
4581 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4582 struct ql4_tuple_ddb *old_tddb,
4583 struct ql4_tuple_ddb *new_tddb)
4584 {
4585 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4586 /* Same ip */
4587 if (old_tddb->port == new_tddb->port)
4588 return QLA_ERROR;
4589 }
4590
4591 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4592 /* different iqn */
4593 return QLA_ERROR;
4594
4595 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4596 sizeof(old_tddb->isid)))
4597 /* different isid */
4598 return QLA_ERROR;
4599
4600 return QLA_SUCCESS;
4601 }
4602
4603 /**
4604 * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4605 * @ha: Pointer to host adapter structure.
4606 * @list_nt: list of nt target.
4607 * @fw_ddb_entry: firmware ddb entry.
4608 *
4609 * This routine check if fw_ddb_entry already exists in list_nt to avoid
4610 * duplicate ddb in list_nt.
4611 * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4612 * Note: This function also update isid of DDB if required.
4613 **/
4614
4615 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4616 struct list_head *list_nt,
4617 struct dev_db_entry *fw_ddb_entry)
4618 {
4619 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4620 struct ql4_tuple_ddb *fw_tddb = NULL;
4621 struct ql4_tuple_ddb *tmp_tddb = NULL;
4622 int rval, ret = QLA_ERROR;
4623
4624 fw_tddb = vzalloc(sizeof(*fw_tddb));
4625 if (!fw_tddb) {
4626 DEBUG2(ql4_printk(KERN_WARNING, ha,
4627 "Memory Allocation failed.\n"));
4628 ret = QLA_SUCCESS;
4629 goto exit_check;
4630 }
4631
4632 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4633 if (!tmp_tddb) {
4634 DEBUG2(ql4_printk(KERN_WARNING, ha,
4635 "Memory Allocation failed.\n"));
4636 ret = QLA_SUCCESS;
4637 goto exit_check;
4638 }
4639
4640 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4641
4642 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4643 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4644 nt_ddb_idx->flash_isid);
4645 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4646 /* found duplicate ddb */
4647 if (ret == QLA_SUCCESS)
4648 goto exit_check;
4649 }
4650
4651 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4652 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4653
4654 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4655 if (ret == QLA_SUCCESS) {
4656 rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4657 if (rval == QLA_SUCCESS)
4658 ret = QLA_ERROR;
4659 else
4660 ret = QLA_SUCCESS;
4661
4662 goto exit_check;
4663 }
4664 }
4665
4666 exit_check:
4667 if (fw_tddb)
4668 vfree(fw_tddb);
4669 if (tmp_tddb)
4670 vfree(tmp_tddb);
4671 return ret;
4672 }
4673
4674 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
4675 {
4676 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
4677
4678 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4679 list_del_init(&ddb_idx->list);
4680 vfree(ddb_idx);
4681 }
4682 }
4683
4684 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
4685 struct dev_db_entry *fw_ddb_entry)
4686 {
4687 struct iscsi_endpoint *ep;
4688 struct sockaddr_in *addr;
4689 struct sockaddr_in6 *addr6;
4690 struct sockaddr *dst_addr;
4691 char *ip;
4692
4693 /* TODO: need to destroy on unload iscsi_endpoint*/
4694 dst_addr = vmalloc(sizeof(*dst_addr));
4695 if (!dst_addr)
4696 return NULL;
4697
4698 if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
4699 dst_addr->sa_family = AF_INET6;
4700 addr6 = (struct sockaddr_in6 *)dst_addr;
4701 ip = (char *)&addr6->sin6_addr;
4702 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
4703 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
4704
4705 } else {
4706 dst_addr->sa_family = AF_INET;
4707 addr = (struct sockaddr_in *)dst_addr;
4708 ip = (char *)&addr->sin_addr;
4709 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
4710 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
4711 }
4712
4713 ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
4714 vfree(dst_addr);
4715 return ep;
4716 }
4717
4718 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
4719 {
4720 if (ql4xdisablesysfsboot)
4721 return QLA_SUCCESS;
4722 if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
4723 return QLA_ERROR;
4724 return QLA_SUCCESS;
4725 }
4726
4727 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
4728 struct ddb_entry *ddb_entry)
4729 {
4730 uint16_t def_timeout;
4731
4732 ddb_entry->ddb_type = FLASH_DDB;
4733 ddb_entry->fw_ddb_index = INVALID_ENTRY;
4734 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
4735 ddb_entry->ha = ha;
4736 ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
4737 ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
4738
4739 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
4740 atomic_set(&ddb_entry->relogin_timer, 0);
4741 atomic_set(&ddb_entry->relogin_retry_count, 0);
4742 def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
4743 ddb_entry->default_relogin_timeout =
4744 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
4745 def_timeout : LOGIN_TOV;
4746 ddb_entry->default_time2wait =
4747 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
4748 }
4749
4750 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
4751 {
4752 uint32_t idx = 0;
4753 uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
4754 uint32_t sts[MBOX_REG_COUNT];
4755 uint32_t ip_state;
4756 unsigned long wtime;
4757 int ret;
4758
4759 wtime = jiffies + (HZ * IP_CONFIG_TOV);
4760 do {
4761 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
4762 if (ip_idx[idx] == -1)
4763 continue;
4764
4765 ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
4766
4767 if (ret == QLA_ERROR) {
4768 ip_idx[idx] = -1;
4769 continue;
4770 }
4771
4772 ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
4773
4774 DEBUG2(ql4_printk(KERN_INFO, ha,
4775 "Waiting for IP state for idx = %d, state = 0x%x\n",
4776 ip_idx[idx], ip_state));
4777 if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
4778 ip_state == IP_ADDRSTATE_INVALID ||
4779 ip_state == IP_ADDRSTATE_PREFERRED ||
4780 ip_state == IP_ADDRSTATE_DEPRICATED ||
4781 ip_state == IP_ADDRSTATE_DISABLING)
4782 ip_idx[idx] = -1;
4783 }
4784
4785 /* Break if all IP states checked */
4786 if ((ip_idx[0] == -1) &&
4787 (ip_idx[1] == -1) &&
4788 (ip_idx[2] == -1) &&
4789 (ip_idx[3] == -1))
4790 break;
4791 schedule_timeout_uninterruptible(HZ);
4792 } while (time_after(wtime, jiffies));
4793 }
4794
4795 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4796 struct list_head *list_st)
4797 {
4798 struct qla_ddb_index *st_ddb_idx;
4799 int max_ddbs;
4800 int fw_idx_size;
4801 struct dev_db_entry *fw_ddb_entry;
4802 dma_addr_t fw_ddb_dma;
4803 int ret;
4804 uint32_t idx = 0, next_idx = 0;
4805 uint32_t state = 0, conn_err = 0;
4806 uint16_t conn_id = 0;
4807
4808 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4809 &fw_ddb_dma);
4810 if (fw_ddb_entry == NULL) {
4811 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4812 goto exit_st_list;
4813 }
4814
4815 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4816 MAX_DEV_DB_ENTRIES;
4817 fw_idx_size = sizeof(struct qla_ddb_index);
4818
4819 for (idx = 0; idx < max_ddbs; idx = next_idx) {
4820 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4821 NULL, &next_idx, &state,
4822 &conn_err, NULL, &conn_id);
4823 if (ret == QLA_ERROR)
4824 break;
4825
4826 /* Ignore DDB if invalid state (unassigned) */
4827 if (state == DDB_DS_UNASSIGNED)
4828 goto continue_next_st;
4829
4830 /* Check if ST, add to the list_st */
4831 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4832 goto continue_next_st;
4833
4834 st_ddb_idx = vzalloc(fw_idx_size);
4835 if (!st_ddb_idx)
4836 break;
4837
4838 st_ddb_idx->fw_ddb_idx = idx;
4839
4840 list_add_tail(&st_ddb_idx->list, list_st);
4841 continue_next_st:
4842 if (next_idx == 0)
4843 break;
4844 }
4845
4846 exit_st_list:
4847 if (fw_ddb_entry)
4848 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4849 }
4850
4851 /**
4852 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
4853 * @ha: pointer to adapter structure
4854 * @list_ddb: List from which failed ddb to be removed
4855 *
4856 * Iterate over the list of DDBs and find and remove DDBs that are either in
4857 * no connection active state or failed state
4858 **/
4859 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4860 struct list_head *list_ddb)
4861 {
4862 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
4863 uint32_t next_idx = 0;
4864 uint32_t state = 0, conn_err = 0;
4865 int ret;
4866
4867 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4868 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4869 NULL, 0, NULL, &next_idx, &state,
4870 &conn_err, NULL, NULL);
4871 if (ret == QLA_ERROR)
4872 continue;
4873
4874 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4875 state == DDB_DS_SESSION_FAILED) {
4876 list_del_init(&ddb_idx->list);
4877 vfree(ddb_idx);
4878 }
4879 }
4880 }
4881
4882 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4883 struct dev_db_entry *fw_ddb_entry,
4884 int is_reset)
4885 {
4886 struct iscsi_cls_session *cls_sess;
4887 struct iscsi_session *sess;
4888 struct iscsi_cls_conn *cls_conn;
4889 struct iscsi_endpoint *ep;
4890 uint16_t cmds_max = 32;
4891 uint16_t conn_id = 0;
4892 uint32_t initial_cmdsn = 0;
4893 int ret = QLA_SUCCESS;
4894
4895 struct ddb_entry *ddb_entry = NULL;
4896
4897 /* Create session object, with INVALID_ENTRY,
4898 * the targer_id would get set when we issue the login
4899 */
4900 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4901 cmds_max, sizeof(struct ddb_entry),
4902 sizeof(struct ql4_task_data),
4903 initial_cmdsn, INVALID_ENTRY);
4904 if (!cls_sess) {
4905 ret = QLA_ERROR;
4906 goto exit_setup;
4907 }
4908
4909 /*
4910 * so calling module_put function to decrement the
4911 * reference count.
4912 **/
4913 module_put(qla4xxx_iscsi_transport.owner);
4914 sess = cls_sess->dd_data;
4915 ddb_entry = sess->dd_data;
4916 ddb_entry->sess = cls_sess;
4917
4918 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4919 memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4920 sizeof(struct dev_db_entry));
4921
4922 qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4923
4924 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4925
4926 if (!cls_conn) {
4927 ret = QLA_ERROR;
4928 goto exit_setup;
4929 }
4930
4931 ddb_entry->conn = cls_conn;
4932
4933 /* Setup ep, for displaying attributes in sysfs */
4934 ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4935 if (ep) {
4936 ep->conn = cls_conn;
4937 cls_conn->ep = ep;
4938 } else {
4939 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4940 ret = QLA_ERROR;
4941 goto exit_setup;
4942 }
4943
4944 /* Update sess/conn params */
4945 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4946
4947 if (is_reset == RESET_ADAPTER) {
4948 iscsi_block_session(cls_sess);
4949 /* Use the relogin path to discover new devices
4950 * by short-circuting the logic of setting
4951 * timer to relogin - instead set the flags
4952 * to initiate login right away.
4953 */
4954 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4955 set_bit(DF_RELOGIN, &ddb_entry->flags);
4956 }
4957
4958 exit_setup:
4959 return ret;
4960 }
4961
4962 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4963 struct list_head *list_nt, int is_reset)
4964 {
4965 struct dev_db_entry *fw_ddb_entry;
4966 dma_addr_t fw_ddb_dma;
4967 int max_ddbs;
4968 int fw_idx_size;
4969 int ret;
4970 uint32_t idx = 0, next_idx = 0;
4971 uint32_t state = 0, conn_err = 0;
4972 uint16_t conn_id = 0;
4973 struct qla_ddb_index *nt_ddb_idx;
4974
4975 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4976 &fw_ddb_dma);
4977 if (fw_ddb_entry == NULL) {
4978 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4979 goto exit_nt_list;
4980 }
4981 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4982 MAX_DEV_DB_ENTRIES;
4983 fw_idx_size = sizeof(struct qla_ddb_index);
4984
4985 for (idx = 0; idx < max_ddbs; idx = next_idx) {
4986 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4987 NULL, &next_idx, &state,
4988 &conn_err, NULL, &conn_id);
4989 if (ret == QLA_ERROR)
4990 break;
4991
4992 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4993 goto continue_next_nt;
4994
4995 /* Check if NT, then add to list it */
4996 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4997 goto continue_next_nt;
4998
4999 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5000 state == DDB_DS_SESSION_FAILED))
5001 goto continue_next_nt;
5002
5003 DEBUG2(ql4_printk(KERN_INFO, ha,
5004 "Adding DDB to session = 0x%x\n", idx));
5005 if (is_reset == INIT_ADAPTER) {
5006 nt_ddb_idx = vmalloc(fw_idx_size);
5007 if (!nt_ddb_idx)
5008 break;
5009
5010 nt_ddb_idx->fw_ddb_idx = idx;
5011
5012 /* Copy original isid as it may get updated in function
5013 * qla4xxx_update_isid(). We need original isid in
5014 * function qla4xxx_compare_tuple_ddb to find duplicate
5015 * target */
5016 memcpy(&nt_ddb_idx->flash_isid[0],
5017 &fw_ddb_entry->isid[0],
5018 sizeof(nt_ddb_idx->flash_isid));
5019
5020 ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5021 fw_ddb_entry);
5022 if (ret == QLA_SUCCESS) {
5023 /* free nt_ddb_idx and do not add to list_nt */
5024 vfree(nt_ddb_idx);
5025 goto continue_next_nt;
5026 }
5027
5028 /* Copy updated isid */
5029 memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5030 sizeof(struct dev_db_entry));
5031
5032 list_add_tail(&nt_ddb_idx->list, list_nt);
5033 } else if (is_reset == RESET_ADAPTER) {
5034 if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5035 QLA_SUCCESS)
5036 goto continue_next_nt;
5037 }
5038
5039 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
5040 if (ret == QLA_ERROR)
5041 goto exit_nt_list;
5042
5043 continue_next_nt:
5044 if (next_idx == 0)
5045 break;
5046 }
5047
5048 exit_nt_list:
5049 if (fw_ddb_entry)
5050 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5051 }
5052
5053 /**
5054 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
5055 * @ha: pointer to adapter structure
5056 * @is_reset: Is this init path or reset path
5057 *
5058 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
5059 * using connection open, then create the list of normal targets (nt)
5060 * from firmware DDBs. Based on the list of nt setup session and connection
5061 * objects.
5062 **/
5063 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
5064 {
5065 uint16_t tmo = 0;
5066 struct list_head list_st, list_nt;
5067 struct qla_ddb_index *st_ddb_idx, *st_ddb_idx_tmp;
5068 unsigned long wtime;
5069
5070 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5071 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
5072 ha->is_reset = is_reset;
5073 return;
5074 }
5075
5076 INIT_LIST_HEAD(&list_st);
5077 INIT_LIST_HEAD(&list_nt);
5078
5079 qla4xxx_build_st_list(ha, &list_st);
5080
5081 /* Before issuing conn open mbox, ensure all IPs states are configured
5082 * Note, conn open fails if IPs are not configured
5083 */
5084 qla4xxx_wait_for_ip_configuration(ha);
5085
5086 /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
5087 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
5088 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
5089 }
5090
5091 /* Wait to ensure all sendtargets are done for min 12 sec wait */
5092 tmo = ((ha->def_timeout > LOGIN_TOV) &&
5093 (ha->def_timeout < LOGIN_TOV * 10) ?
5094 ha->def_timeout : LOGIN_TOV);
5095
5096 DEBUG2(ql4_printk(KERN_INFO, ha,
5097 "Default time to wait for build ddb %d\n", tmo));
5098
5099 wtime = jiffies + (HZ * tmo);
5100 do {
5101 if (list_empty(&list_st))
5102 break;
5103
5104 qla4xxx_remove_failed_ddb(ha, &list_st);
5105 schedule_timeout_uninterruptible(HZ / 10);
5106 } while (time_after(wtime, jiffies));
5107
5108 /* Free up the sendtargets list */
5109 qla4xxx_free_ddb_list(&list_st);
5110
5111 qla4xxx_build_nt_list(ha, &list_nt, is_reset);
5112
5113 qla4xxx_free_ddb_list(&list_nt);
5114
5115 qla4xxx_free_ddb_index(ha);
5116 }
5117
5118 /**
5119 * qla4xxx_probe_adapter - callback function to probe HBA
5120 * @pdev: pointer to pci_dev structure
5121 * @pci_device_id: pointer to pci_device entry
5122 *
5123 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
5124 * It returns zero if successful. It also initializes all data necessary for
5125 * the driver.
5126 **/
5127 static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
5128 const struct pci_device_id *ent)
5129 {
5130 int ret = -ENODEV, status;
5131 struct Scsi_Host *host;
5132 struct scsi_qla_host *ha;
5133 uint8_t init_retry_count = 0;
5134 char buf[34];
5135 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
5136 uint32_t dev_state;
5137
5138 if (pci_enable_device(pdev))
5139 return -1;
5140
5141 host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
5142 if (host == NULL) {
5143 printk(KERN_WARNING
5144 "qla4xxx: Couldn't allocate host from scsi layer!\n");
5145 goto probe_disable_device;
5146 }
5147
5148 /* Clear our data area */
5149 ha = to_qla_host(host);
5150 memset(ha, 0, sizeof(*ha));
5151
5152 /* Save the information from PCI BIOS. */
5153 ha->pdev = pdev;
5154 ha->host = host;
5155 ha->host_no = host->host_no;
5156 ha->func_num = PCI_FUNC(ha->pdev->devfn);
5157
5158 pci_enable_pcie_error_reporting(pdev);
5159
5160 /* Setup Runtime configurable options */
5161 if (is_qla8022(ha)) {
5162 ha->isp_ops = &qla4_82xx_isp_ops;
5163 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
5164 ha->qdr_sn_window = -1;
5165 ha->ddr_mn_window = -1;
5166 ha->curr_window = 255;
5167 nx_legacy_intr = &legacy_intr[ha->func_num];
5168 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
5169 ha->nx_legacy_intr.tgt_status_reg =
5170 nx_legacy_intr->tgt_status_reg;
5171 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
5172 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
5173 } else if (is_qla8032(ha)) {
5174 ha->isp_ops = &qla4_83xx_isp_ops;
5175 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
5176 } else {
5177 ha->isp_ops = &qla4xxx_isp_ops;
5178 }
5179
5180 if (is_qla80XX(ha)) {
5181 rwlock_init(&ha->hw_lock);
5182 ha->pf_bit = ha->func_num << 16;
5183 /* Set EEH reset type to fundamental if required by hba */
5184 pdev->needs_freset = 1;
5185 }
5186
5187 /* Configure PCI I/O space. */
5188 ret = ha->isp_ops->iospace_config(ha);
5189 if (ret)
5190 goto probe_failed_ioconfig;
5191
5192 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
5193 pdev->device, pdev->irq, ha->reg);
5194
5195 qla4xxx_config_dma_addressing(ha);
5196
5197 /* Initialize lists and spinlocks. */
5198 INIT_LIST_HEAD(&ha->free_srb_q);
5199
5200 mutex_init(&ha->mbox_sem);
5201 mutex_init(&ha->chap_sem);
5202 init_completion(&ha->mbx_intr_comp);
5203 init_completion(&ha->disable_acb_comp);
5204
5205 spin_lock_init(&ha->hardware_lock);
5206 spin_lock_init(&ha->work_lock);
5207
5208 /* Initialize work list */
5209 INIT_LIST_HEAD(&ha->work_list);
5210
5211 /* Allocate dma buffers */
5212 if (qla4xxx_mem_alloc(ha)) {
5213 ql4_printk(KERN_WARNING, ha,
5214 "[ERROR] Failed to allocate memory for adapter\n");
5215
5216 ret = -ENOMEM;
5217 goto probe_failed;
5218 }
5219
5220 host->cmd_per_lun = 3;
5221 host->max_channel = 0;
5222 host->max_lun = MAX_LUNS - 1;
5223 host->max_id = MAX_TARGETS;
5224 host->max_cmd_len = IOCB_MAX_CDB_LEN;
5225 host->can_queue = MAX_SRBS ;
5226 host->transportt = qla4xxx_scsi_transport;
5227
5228 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
5229 if (ret) {
5230 ql4_printk(KERN_WARNING, ha,
5231 "%s: scsi_init_shared_tag_map failed\n", __func__);
5232 goto probe_failed;
5233 }
5234
5235 pci_set_drvdata(pdev, ha);
5236
5237 ret = scsi_add_host(host, &pdev->dev);
5238 if (ret)
5239 goto probe_failed;
5240
5241 if (is_qla80XX(ha))
5242 qla4_8xxx_get_flash_info(ha);
5243
5244 if (is_qla8032(ha)) {
5245 qla4_83xx_read_reset_template(ha);
5246 /*
5247 * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
5248 * If DONRESET_BIT0 is set, drivers should not set dev_state
5249 * to NEED_RESET. But if NEED_RESET is set, drivers should
5250 * should honor the reset.
5251 */
5252 if (ql4xdontresethba == 1)
5253 qla4_83xx_set_idc_dontreset(ha);
5254 }
5255
5256 /*
5257 * Initialize the Host adapter request/response queues and
5258 * firmware
5259 * NOTE: interrupts enabled upon successful completion
5260 */
5261 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5262
5263 /* Dont retry adapter initialization if IRQ allocation failed */
5264 if (!test_bit(AF_IRQ_ATTACHED, &ha->flags))
5265 goto skip_retry_init;
5266
5267 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
5268 init_retry_count++ < MAX_INIT_RETRIES) {
5269
5270 if (is_qla80XX(ha)) {
5271 ha->isp_ops->idc_lock(ha);
5272 dev_state = qla4_8xxx_rd_direct(ha,
5273 QLA82XX_CRB_DEV_STATE);
5274 ha->isp_ops->idc_unlock(ha);
5275 if (dev_state == QLA8XXX_DEV_FAILED) {
5276 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
5277 "initialize adapter. H/W is in failed state\n",
5278 __func__);
5279 break;
5280 }
5281 }
5282 DEBUG2(printk("scsi: %s: retrying adapter initialization "
5283 "(%d)\n", __func__, init_retry_count));
5284
5285 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
5286 continue;
5287
5288 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5289 }
5290
5291 skip_retry_init:
5292 if (!test_bit(AF_ONLINE, &ha->flags)) {
5293 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
5294
5295 if ((is_qla8022(ha) && ql4xdontresethba) ||
5296 (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5297 /* Put the device in failed state. */
5298 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
5299 ha->isp_ops->idc_lock(ha);
5300 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5301 QLA8XXX_DEV_FAILED);
5302 ha->isp_ops->idc_unlock(ha);
5303 }
5304 ret = -ENODEV;
5305 goto remove_host;
5306 }
5307
5308 /* Startup the kernel thread for this host adapter. */
5309 DEBUG2(printk("scsi: %s: Starting kernel thread for "
5310 "qla4xxx_dpc\n", __func__));
5311 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
5312 ha->dpc_thread = create_singlethread_workqueue(buf);
5313 if (!ha->dpc_thread) {
5314 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
5315 ret = -ENODEV;
5316 goto remove_host;
5317 }
5318 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
5319
5320 sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
5321 ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
5322 if (!ha->task_wq) {
5323 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
5324 ret = -ENODEV;
5325 goto remove_host;
5326 }
5327
5328 /*
5329 * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
5330 * (which is called indirectly by qla4xxx_initialize_adapter),
5331 * so that irqs will be registered after crbinit but before
5332 * mbx_intr_enable.
5333 */
5334 if (is_qla40XX(ha)) {
5335 ret = qla4xxx_request_irqs(ha);
5336 if (ret) {
5337 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
5338 "interrupt %d already in use.\n", pdev->irq);
5339 goto remove_host;
5340 }
5341 }
5342
5343 pci_save_state(ha->pdev);
5344 ha->isp_ops->enable_intrs(ha);
5345
5346 /* Start timer thread. */
5347 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
5348
5349 set_bit(AF_INIT_DONE, &ha->flags);
5350
5351 qla4_8xxx_alloc_sysfs_attr(ha);
5352
5353 printk(KERN_INFO
5354 " QLogic iSCSI HBA Driver version: %s\n"
5355 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
5356 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
5357 ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
5358 ha->patch_number, ha->build_number);
5359
5360 /* Set the driver version */
5361 if (is_qla80XX(ha))
5362 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
5363
5364 if (qla4xxx_setup_boot_info(ha))
5365 ql4_printk(KERN_ERR, ha,
5366 "%s: No iSCSI boot target configured\n", __func__);
5367
5368 /* Perform the build ddb list and login to each */
5369 qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
5370 iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
5371
5372 qla4xxx_create_chap_list(ha);
5373
5374 qla4xxx_create_ifaces(ha);
5375 return 0;
5376
5377 remove_host:
5378 scsi_remove_host(ha->host);
5379
5380 probe_failed:
5381 qla4xxx_free_adapter(ha);
5382
5383 probe_failed_ioconfig:
5384 pci_disable_pcie_error_reporting(pdev);
5385 scsi_host_put(ha->host);
5386
5387 probe_disable_device:
5388 pci_disable_device(pdev);
5389
5390 return ret;
5391 }
5392
5393 /**
5394 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
5395 * @ha: pointer to adapter structure
5396 *
5397 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
5398 * so that the other port will not re-initialize while in the process of
5399 * removing the ha due to driver unload or hba hotplug.
5400 **/
5401 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
5402 {
5403 struct scsi_qla_host *other_ha = NULL;
5404 struct pci_dev *other_pdev = NULL;
5405 int fn = ISP4XXX_PCI_FN_2;
5406
5407 /*iscsi function numbers for ISP4xxx is 1 and 3*/
5408 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
5409 fn = ISP4XXX_PCI_FN_1;
5410
5411 other_pdev =
5412 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5413 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5414 fn));
5415
5416 /* Get other_ha if other_pdev is valid and state is enable*/
5417 if (other_pdev) {
5418 if (atomic_read(&other_pdev->enable_cnt)) {
5419 other_ha = pci_get_drvdata(other_pdev);
5420 if (other_ha) {
5421 set_bit(AF_HA_REMOVAL, &other_ha->flags);
5422 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
5423 "Prevent %s reinit\n", __func__,
5424 dev_name(&other_ha->pdev->dev)));
5425 }
5426 }
5427 pci_dev_put(other_pdev);
5428 }
5429 }
5430
5431 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
5432 {
5433 struct ddb_entry *ddb_entry;
5434 int options;
5435 int idx;
5436
5437 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5438
5439 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5440 if ((ddb_entry != NULL) &&
5441 (ddb_entry->ddb_type == FLASH_DDB)) {
5442
5443 options = LOGOUT_OPTION_CLOSE_SESSION;
5444 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
5445 == QLA_ERROR)
5446 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
5447 __func__);
5448
5449 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5450 /*
5451 * we have decremented the reference count of the driver
5452 * when we setup the session to have the driver unload
5453 * to be seamless without actually destroying the
5454 * session
5455 **/
5456 try_module_get(qla4xxx_iscsi_transport.owner);
5457 iscsi_destroy_endpoint(ddb_entry->conn->ep);
5458 qla4xxx_free_ddb(ha, ddb_entry);
5459 iscsi_session_teardown(ddb_entry->sess);
5460 }
5461 }
5462 }
5463 /**
5464 * qla4xxx_remove_adapter - callback function to remove adapter.
5465 * @pci_dev: PCI device pointer
5466 **/
5467 static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
5468 {
5469 struct scsi_qla_host *ha;
5470
5471 /*
5472 * If the PCI device is disabled then it means probe_adapter had
5473 * failed and resources already cleaned up on probe_adapter exit.
5474 */
5475 if (!pci_is_enabled(pdev))
5476 return;
5477
5478 ha = pci_get_drvdata(pdev);
5479
5480 if (is_qla40XX(ha))
5481 qla4xxx_prevent_other_port_reinit(ha);
5482
5483 /* destroy iface from sysfs */
5484 qla4xxx_destroy_ifaces(ha);
5485
5486 if ((!ql4xdisablesysfsboot) && ha->boot_kset)
5487 iscsi_boot_destroy_kset(ha->boot_kset);
5488
5489 qla4xxx_destroy_fw_ddb_session(ha);
5490 qla4_8xxx_free_sysfs_attr(ha);
5491
5492 scsi_remove_host(ha->host);
5493
5494 qla4xxx_free_adapter(ha);
5495
5496 scsi_host_put(ha->host);
5497
5498 pci_disable_pcie_error_reporting(pdev);
5499 pci_disable_device(pdev);
5500 pci_set_drvdata(pdev, NULL);
5501 }
5502
5503 /**
5504 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
5505 * @ha: HA context
5506 *
5507 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
5508 * supported addressing method.
5509 */
5510 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
5511 {
5512 int retval;
5513
5514 /* Update our PCI device dma_mask for full 64 bit mask */
5515 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
5516 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
5517 dev_dbg(&ha->pdev->dev,
5518 "Failed to set 64 bit PCI consistent mask; "
5519 "using 32 bit.\n");
5520 retval = pci_set_consistent_dma_mask(ha->pdev,
5521 DMA_BIT_MASK(32));
5522 }
5523 } else
5524 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
5525 }
5526
5527 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
5528 {
5529 struct iscsi_cls_session *cls_sess;
5530 struct iscsi_session *sess;
5531 struct ddb_entry *ddb;
5532 int queue_depth = QL4_DEF_QDEPTH;
5533
5534 cls_sess = starget_to_session(sdev->sdev_target);
5535 sess = cls_sess->dd_data;
5536 ddb = sess->dd_data;
5537
5538 sdev->hostdata = ddb;
5539 sdev->tagged_supported = 1;
5540
5541 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
5542 queue_depth = ql4xmaxqdepth;
5543
5544 scsi_activate_tcq(sdev, queue_depth);
5545 return 0;
5546 }
5547
5548 static int qla4xxx_slave_configure(struct scsi_device *sdev)
5549 {
5550 sdev->tagged_supported = 1;
5551 return 0;
5552 }
5553
5554 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
5555 {
5556 scsi_deactivate_tcq(sdev, 1);
5557 }
5558
5559 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
5560 int reason)
5561 {
5562 if (!ql4xqfulltracking)
5563 return -EOPNOTSUPP;
5564
5565 return iscsi_change_queue_depth(sdev, qdepth, reason);
5566 }
5567
5568 /**
5569 * qla4xxx_del_from_active_array - returns an active srb
5570 * @ha: Pointer to host adapter structure.
5571 * @index: index into the active_array
5572 *
5573 * This routine removes and returns the srb at the specified index
5574 **/
5575 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
5576 uint32_t index)
5577 {
5578 struct srb *srb = NULL;
5579 struct scsi_cmnd *cmd = NULL;
5580
5581 cmd = scsi_host_find_tag(ha->host, index);
5582 if (!cmd)
5583 return srb;
5584
5585 srb = (struct srb *)CMD_SP(cmd);
5586 if (!srb)
5587 return srb;
5588
5589 /* update counters */
5590 if (srb->flags & SRB_DMA_VALID) {
5591 ha->req_q_count += srb->iocb_cnt;
5592 ha->iocb_cnt -= srb->iocb_cnt;
5593 if (srb->cmd)
5594 srb->cmd->host_scribble =
5595 (unsigned char *)(unsigned long) MAX_SRBS;
5596 }
5597 return srb;
5598 }
5599
5600 /**
5601 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
5602 * @ha: Pointer to host adapter structure.
5603 * @cmd: Scsi Command to wait on.
5604 *
5605 * This routine waits for the command to be returned by the Firmware
5606 * for some max time.
5607 **/
5608 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
5609 struct scsi_cmnd *cmd)
5610 {
5611 int done = 0;
5612 struct srb *rp;
5613 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
5614 int ret = SUCCESS;
5615
5616 /* Dont wait on command if PCI error is being handled
5617 * by PCI AER driver
5618 */
5619 if (unlikely(pci_channel_offline(ha->pdev)) ||
5620 (test_bit(AF_EEH_BUSY, &ha->flags))) {
5621 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
5622 ha->host_no, __func__);
5623 return ret;
5624 }
5625
5626 do {
5627 /* Checking to see if its returned to OS */
5628 rp = (struct srb *) CMD_SP(cmd);
5629 if (rp == NULL) {
5630 done++;
5631 break;
5632 }
5633
5634 msleep(2000);
5635 } while (max_wait_time--);
5636
5637 return done;
5638 }
5639
5640 /**
5641 * qla4xxx_wait_for_hba_online - waits for HBA to come online
5642 * @ha: Pointer to host adapter structure
5643 **/
5644 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
5645 {
5646 unsigned long wait_online;
5647
5648 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
5649 while (time_before(jiffies, wait_online)) {
5650
5651 if (adapter_up(ha))
5652 return QLA_SUCCESS;
5653
5654 msleep(2000);
5655 }
5656
5657 return QLA_ERROR;
5658 }
5659
5660 /**
5661 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
5662 * @ha: pointer to HBA
5663 * @t: target id
5664 * @l: lun id
5665 *
5666 * This function waits for all outstanding commands to a lun to complete. It
5667 * returns 0 if all pending commands are returned and 1 otherwise.
5668 **/
5669 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
5670 struct scsi_target *stgt,
5671 struct scsi_device *sdev)
5672 {
5673 int cnt;
5674 int status = 0;
5675 struct scsi_cmnd *cmd;
5676
5677 /*
5678 * Waiting for all commands for the designated target or dev
5679 * in the active array
5680 */
5681 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
5682 cmd = scsi_host_find_tag(ha->host, cnt);
5683 if (cmd && stgt == scsi_target(cmd->device) &&
5684 (!sdev || sdev == cmd->device)) {
5685 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5686 status++;
5687 break;
5688 }
5689 }
5690 }
5691 return status;
5692 }
5693
5694 /**
5695 * qla4xxx_eh_abort - callback for abort task.
5696 * @cmd: Pointer to Linux's SCSI command structure
5697 *
5698 * This routine is called by the Linux OS to abort the specified
5699 * command.
5700 **/
5701 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
5702 {
5703 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5704 unsigned int id = cmd->device->id;
5705 unsigned int lun = cmd->device->lun;
5706 unsigned long flags;
5707 struct srb *srb = NULL;
5708 int ret = SUCCESS;
5709 int wait = 0;
5710
5711 ql4_printk(KERN_INFO, ha,
5712 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
5713 ha->host_no, id, lun, cmd);
5714
5715 spin_lock_irqsave(&ha->hardware_lock, flags);
5716 srb = (struct srb *) CMD_SP(cmd);
5717 if (!srb) {
5718 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5719 return SUCCESS;
5720 }
5721 kref_get(&srb->srb_ref);
5722 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5723
5724 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
5725 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
5726 ha->host_no, id, lun));
5727 ret = FAILED;
5728 } else {
5729 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
5730 ha->host_no, id, lun));
5731 wait = 1;
5732 }
5733
5734 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
5735
5736 /* Wait for command to complete */
5737 if (wait) {
5738 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5739 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
5740 ha->host_no, id, lun));
5741 ret = FAILED;
5742 }
5743 }
5744
5745 ql4_printk(KERN_INFO, ha,
5746 "scsi%ld:%d:%d: Abort command - %s\n",
5747 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
5748
5749 return ret;
5750 }
5751
5752 /**
5753 * qla4xxx_eh_device_reset - callback for target reset.
5754 * @cmd: Pointer to Linux's SCSI command structure
5755 *
5756 * This routine is called by the Linux OS to reset all luns on the
5757 * specified target.
5758 **/
5759 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
5760 {
5761 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5762 struct ddb_entry *ddb_entry = cmd->device->hostdata;
5763 int ret = FAILED, stat;
5764
5765 if (!ddb_entry)
5766 return ret;
5767
5768 ret = iscsi_block_scsi_eh(cmd);
5769 if (ret)
5770 return ret;
5771 ret = FAILED;
5772
5773 ql4_printk(KERN_INFO, ha,
5774 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
5775 cmd->device->channel, cmd->device->id, cmd->device->lun);
5776
5777 DEBUG2(printk(KERN_INFO
5778 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
5779 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
5780 cmd, jiffies, cmd->request->timeout / HZ,
5781 ha->dpc_flags, cmd->result, cmd->allowed));
5782
5783 /* FIXME: wait for hba to go online */
5784 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
5785 if (stat != QLA_SUCCESS) {
5786 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
5787 goto eh_dev_reset_done;
5788 }
5789
5790 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5791 cmd->device)) {
5792 ql4_printk(KERN_INFO, ha,
5793 "DEVICE RESET FAILED - waiting for "
5794 "commands.\n");
5795 goto eh_dev_reset_done;
5796 }
5797
5798 /* Send marker. */
5799 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5800 MM_LUN_RESET) != QLA_SUCCESS)
5801 goto eh_dev_reset_done;
5802
5803 ql4_printk(KERN_INFO, ha,
5804 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
5805 ha->host_no, cmd->device->channel, cmd->device->id,
5806 cmd->device->lun);
5807
5808 ret = SUCCESS;
5809
5810 eh_dev_reset_done:
5811
5812 return ret;
5813 }
5814
5815 /**
5816 * qla4xxx_eh_target_reset - callback for target reset.
5817 * @cmd: Pointer to Linux's SCSI command structure
5818 *
5819 * This routine is called by the Linux OS to reset the target.
5820 **/
5821 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
5822 {
5823 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5824 struct ddb_entry *ddb_entry = cmd->device->hostdata;
5825 int stat, ret;
5826
5827 if (!ddb_entry)
5828 return FAILED;
5829
5830 ret = iscsi_block_scsi_eh(cmd);
5831 if (ret)
5832 return ret;
5833
5834 starget_printk(KERN_INFO, scsi_target(cmd->device),
5835 "WARM TARGET RESET ISSUED.\n");
5836
5837 DEBUG2(printk(KERN_INFO
5838 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
5839 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
5840 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
5841 ha->dpc_flags, cmd->result, cmd->allowed));
5842
5843 stat = qla4xxx_reset_target(ha, ddb_entry);
5844 if (stat != QLA_SUCCESS) {
5845 starget_printk(KERN_INFO, scsi_target(cmd->device),
5846 "WARM TARGET RESET FAILED.\n");
5847 return FAILED;
5848 }
5849
5850 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5851 NULL)) {
5852 starget_printk(KERN_INFO, scsi_target(cmd->device),
5853 "WARM TARGET DEVICE RESET FAILED - "
5854 "waiting for commands.\n");
5855 return FAILED;
5856 }
5857
5858 /* Send marker. */
5859 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5860 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5861 starget_printk(KERN_INFO, scsi_target(cmd->device),
5862 "WARM TARGET DEVICE RESET FAILED - "
5863 "marker iocb failed.\n");
5864 return FAILED;
5865 }
5866
5867 starget_printk(KERN_INFO, scsi_target(cmd->device),
5868 "WARM TARGET RESET SUCCEEDED.\n");
5869 return SUCCESS;
5870 }
5871
5872 /**
5873 * qla4xxx_is_eh_active - check if error handler is running
5874 * @shost: Pointer to SCSI Host struct
5875 *
5876 * This routine finds that if reset host is called in EH
5877 * scenario or from some application like sg_reset
5878 **/
5879 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5880 {
5881 if (shost->shost_state == SHOST_RECOVERY)
5882 return 1;
5883 return 0;
5884 }
5885
5886 /**
5887 * qla4xxx_eh_host_reset - kernel callback
5888 * @cmd: Pointer to Linux's SCSI command structure
5889 *
5890 * This routine is invoked by the Linux kernel to perform fatal error
5891 * recovery on the specified adapter.
5892 **/
5893 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
5894 {
5895 int return_status = FAILED;
5896 struct scsi_qla_host *ha;
5897
5898 ha = to_qla_host(cmd->device->host);
5899
5900 if (is_qla8032(ha) && ql4xdontresethba)
5901 qla4_83xx_set_idc_dontreset(ha);
5902
5903 /*
5904 * For ISP8324, if IDC_CTRL DONTRESET_BIT0 is set by other
5905 * protocol drivers, we should not set device_state to
5906 * NEED_RESET
5907 */
5908 if (ql4xdontresethba ||
5909 (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5910 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5911 ha->host_no, __func__));
5912
5913 /* Clear outstanding srb in queues */
5914 if (qla4xxx_is_eh_active(cmd->device->host))
5915 qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
5916
5917 return FAILED;
5918 }
5919
5920 ql4_printk(KERN_INFO, ha,
5921 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
5922 cmd->device->channel, cmd->device->id, cmd->device->lun);
5923
5924 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
5925 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
5926 "DEAD.\n", ha->host_no, cmd->device->channel,
5927 __func__));
5928
5929 return FAILED;
5930 }
5931
5932 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5933 if (is_qla80XX(ha))
5934 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5935 else
5936 set_bit(DPC_RESET_HA, &ha->dpc_flags);
5937 }
5938
5939 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
5940 return_status = SUCCESS;
5941
5942 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
5943 return_status == FAILED ? "FAILED" : "SUCCEEDED");
5944
5945 return return_status;
5946 }
5947
5948 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
5949 {
5950 uint32_t mbox_cmd[MBOX_REG_COUNT];
5951 uint32_t mbox_sts[MBOX_REG_COUNT];
5952 struct addr_ctrl_blk_def *acb = NULL;
5953 uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
5954 int rval = QLA_SUCCESS;
5955 dma_addr_t acb_dma;
5956
5957 acb = dma_alloc_coherent(&ha->pdev->dev,
5958 sizeof(struct addr_ctrl_blk_def),
5959 &acb_dma, GFP_KERNEL);
5960 if (!acb) {
5961 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
5962 __func__);
5963 rval = -ENOMEM;
5964 goto exit_port_reset;
5965 }
5966
5967 memset(acb, 0, acb_len);
5968
5969 rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
5970 if (rval != QLA_SUCCESS) {
5971 rval = -EIO;
5972 goto exit_free_acb;
5973 }
5974
5975 rval = qla4xxx_disable_acb(ha);
5976 if (rval != QLA_SUCCESS) {
5977 rval = -EIO;
5978 goto exit_free_acb;
5979 }
5980
5981 wait_for_completion_timeout(&ha->disable_acb_comp,
5982 DISABLE_ACB_TOV * HZ);
5983
5984 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
5985 if (rval != QLA_SUCCESS) {
5986 rval = -EIO;
5987 goto exit_free_acb;
5988 }
5989
5990 exit_free_acb:
5991 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
5992 acb, acb_dma);
5993 exit_port_reset:
5994 DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
5995 rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
5996 return rval;
5997 }
5998
5999 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
6000 {
6001 struct scsi_qla_host *ha = to_qla_host(shost);
6002 int rval = QLA_SUCCESS;
6003
6004 if (ql4xdontresethba) {
6005 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
6006 __func__));
6007 rval = -EPERM;
6008 goto exit_host_reset;
6009 }
6010
6011 rval = qla4xxx_wait_for_hba_online(ha);
6012 if (rval != QLA_SUCCESS) {
6013 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
6014 "adapter\n", __func__));
6015 rval = -EIO;
6016 goto exit_host_reset;
6017 }
6018
6019 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
6020 goto recover_adapter;
6021
6022 switch (reset_type) {
6023 case SCSI_ADAPTER_RESET:
6024 set_bit(DPC_RESET_HA, &ha->dpc_flags);
6025 break;
6026 case SCSI_FIRMWARE_RESET:
6027 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
6028 if (is_qla80XX(ha))
6029 /* set firmware context reset */
6030 set_bit(DPC_RESET_HA_FW_CONTEXT,
6031 &ha->dpc_flags);
6032 else {
6033 rval = qla4xxx_context_reset(ha);
6034 goto exit_host_reset;
6035 }
6036 }
6037 break;
6038 }
6039
6040 recover_adapter:
6041 rval = qla4xxx_recover_adapter(ha);
6042 if (rval != QLA_SUCCESS) {
6043 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
6044 __func__));
6045 rval = -EIO;
6046 }
6047
6048 exit_host_reset:
6049 return rval;
6050 }
6051
6052 /* PCI AER driver recovers from all correctable errors w/o
6053 * driver intervention. For uncorrectable errors PCI AER
6054 * driver calls the following device driver's callbacks
6055 *
6056 * - Fatal Errors - link_reset
6057 * - Non-Fatal Errors - driver's pci_error_detected() which
6058 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
6059 *
6060 * PCI AER driver calls
6061 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
6062 * returns RECOVERED or NEED_RESET if fw_hung
6063 * NEED_RESET - driver's slot_reset()
6064 * DISCONNECT - device is dead & cannot recover
6065 * RECOVERED - driver's pci_resume()
6066 */
6067 static pci_ers_result_t
6068 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
6069 {
6070 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6071
6072 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
6073 ha->host_no, __func__, state);
6074
6075 if (!is_aer_supported(ha))
6076 return PCI_ERS_RESULT_NONE;
6077
6078 switch (state) {
6079 case pci_channel_io_normal:
6080 clear_bit(AF_EEH_BUSY, &ha->flags);
6081 return PCI_ERS_RESULT_CAN_RECOVER;
6082 case pci_channel_io_frozen:
6083 set_bit(AF_EEH_BUSY, &ha->flags);
6084 qla4xxx_mailbox_premature_completion(ha);
6085 qla4xxx_free_irqs(ha);
6086 pci_disable_device(pdev);
6087 /* Return back all IOs */
6088 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
6089 return PCI_ERS_RESULT_NEED_RESET;
6090 case pci_channel_io_perm_failure:
6091 set_bit(AF_EEH_BUSY, &ha->flags);
6092 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
6093 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
6094 return PCI_ERS_RESULT_DISCONNECT;
6095 }
6096 return PCI_ERS_RESULT_NEED_RESET;
6097 }
6098
6099 /**
6100 * qla4xxx_pci_mmio_enabled() gets called if
6101 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
6102 * and read/write to the device still works.
6103 **/
6104 static pci_ers_result_t
6105 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
6106 {
6107 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6108
6109 if (!is_aer_supported(ha))
6110 return PCI_ERS_RESULT_NONE;
6111
6112 return PCI_ERS_RESULT_RECOVERED;
6113 }
6114
6115 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
6116 {
6117 uint32_t rval = QLA_ERROR;
6118 uint32_t ret = 0;
6119 int fn;
6120 struct pci_dev *other_pdev = NULL;
6121
6122 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
6123
6124 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6125
6126 if (test_bit(AF_ONLINE, &ha->flags)) {
6127 clear_bit(AF_ONLINE, &ha->flags);
6128 clear_bit(AF_LINK_UP, &ha->flags);
6129 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
6130 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
6131 }
6132
6133 fn = PCI_FUNC(ha->pdev->devfn);
6134 while (fn > 0) {
6135 fn--;
6136 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
6137 "func %x\n", ha->host_no, __func__, fn);
6138 /* Get the pci device given the domain, bus,
6139 * slot/function number */
6140 other_pdev =
6141 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
6142 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
6143 fn));
6144
6145 if (!other_pdev)
6146 continue;
6147
6148 if (atomic_read(&other_pdev->enable_cnt)) {
6149 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
6150 "func in enabled state%x\n", ha->host_no,
6151 __func__, fn);
6152 pci_dev_put(other_pdev);
6153 break;
6154 }
6155 pci_dev_put(other_pdev);
6156 }
6157
6158 /* The first function on the card, the reset owner will
6159 * start & initialize the firmware. The other functions
6160 * on the card will reset the firmware context
6161 */
6162 if (!fn) {
6163 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
6164 "0x%x is the owner\n", ha->host_no, __func__,
6165 ha->pdev->devfn);
6166
6167 ha->isp_ops->idc_lock(ha);
6168 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6169 QLA8XXX_DEV_COLD);
6170 ha->isp_ops->idc_unlock(ha);
6171
6172 rval = qla4_8xxx_update_idc_reg(ha);
6173 if (rval == QLA_ERROR) {
6174 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
6175 ha->host_no, __func__);
6176 ha->isp_ops->idc_lock(ha);
6177 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6178 QLA8XXX_DEV_FAILED);
6179 ha->isp_ops->idc_unlock(ha);
6180 goto exit_error_recovery;
6181 }
6182
6183 clear_bit(AF_FW_RECOVERY, &ha->flags);
6184 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6185
6186 if (rval != QLA_SUCCESS) {
6187 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6188 "FAILED\n", ha->host_no, __func__);
6189 ha->isp_ops->idc_lock(ha);
6190 qla4_8xxx_clear_drv_active(ha);
6191 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6192 QLA8XXX_DEV_FAILED);
6193 ha->isp_ops->idc_unlock(ha);
6194 } else {
6195 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6196 "READY\n", ha->host_no, __func__);
6197 ha->isp_ops->idc_lock(ha);
6198 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6199 QLA8XXX_DEV_READY);
6200 /* Clear driver state register */
6201 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
6202 qla4_8xxx_set_drv_active(ha);
6203 ha->isp_ops->idc_unlock(ha);
6204 ret = qla4xxx_request_irqs(ha);
6205 if (ret) {
6206 ql4_printk(KERN_WARNING, ha, "Failed to "
6207 "reserve interrupt %d already in use.\n",
6208 ha->pdev->irq);
6209 rval = QLA_ERROR;
6210 } else {
6211 ha->isp_ops->enable_intrs(ha);
6212 rval = QLA_SUCCESS;
6213 }
6214 }
6215 } else {
6216 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
6217 "the reset owner\n", ha->host_no, __func__,
6218 ha->pdev->devfn);
6219 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
6220 QLA8XXX_DEV_READY)) {
6221 clear_bit(AF_FW_RECOVERY, &ha->flags);
6222 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6223 if (rval == QLA_SUCCESS) {
6224 ret = qla4xxx_request_irqs(ha);
6225 if (ret) {
6226 ql4_printk(KERN_WARNING, ha, "Failed to"
6227 " reserve interrupt %d already in"
6228 " use.\n", ha->pdev->irq);
6229 rval = QLA_ERROR;
6230 } else {
6231 ha->isp_ops->enable_intrs(ha);
6232 rval = QLA_SUCCESS;
6233 }
6234 }
6235 ha->isp_ops->idc_lock(ha);
6236 qla4_8xxx_set_drv_active(ha);
6237 ha->isp_ops->idc_unlock(ha);
6238 }
6239 }
6240 exit_error_recovery:
6241 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6242 return rval;
6243 }
6244
6245 static pci_ers_result_t
6246 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
6247 {
6248 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
6249 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6250 int rc;
6251
6252 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
6253 ha->host_no, __func__);
6254
6255 if (!is_aer_supported(ha))
6256 return PCI_ERS_RESULT_NONE;
6257
6258 /* Restore the saved state of PCIe device -
6259 * BAR registers, PCI Config space, PCIX, MSI,
6260 * IOV states
6261 */
6262 pci_restore_state(pdev);
6263
6264 /* pci_restore_state() clears the saved_state flag of the device
6265 * save restored state which resets saved_state flag
6266 */
6267 pci_save_state(pdev);
6268
6269 /* Initialize device or resume if in suspended state */
6270 rc = pci_enable_device(pdev);
6271 if (rc) {
6272 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
6273 "device after reset\n", ha->host_no, __func__);
6274 goto exit_slot_reset;
6275 }
6276
6277 ha->isp_ops->disable_intrs(ha);
6278
6279 if (is_qla80XX(ha)) {
6280 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
6281 ret = PCI_ERS_RESULT_RECOVERED;
6282 goto exit_slot_reset;
6283 } else
6284 goto exit_slot_reset;
6285 }
6286
6287 exit_slot_reset:
6288 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
6289 "device after reset\n", ha->host_no, __func__, ret);
6290 return ret;
6291 }
6292
6293 static void
6294 qla4xxx_pci_resume(struct pci_dev *pdev)
6295 {
6296 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6297 int ret;
6298
6299 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
6300 ha->host_no, __func__);
6301
6302 ret = qla4xxx_wait_for_hba_online(ha);
6303 if (ret != QLA_SUCCESS) {
6304 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
6305 "resume I/O from slot/link_reset\n", ha->host_no,
6306 __func__);
6307 }
6308
6309 pci_cleanup_aer_uncorrect_error_status(pdev);
6310 clear_bit(AF_EEH_BUSY, &ha->flags);
6311 }
6312
6313 static const struct pci_error_handlers qla4xxx_err_handler = {
6314 .error_detected = qla4xxx_pci_error_detected,
6315 .mmio_enabled = qla4xxx_pci_mmio_enabled,
6316 .slot_reset = qla4xxx_pci_slot_reset,
6317 .resume = qla4xxx_pci_resume,
6318 };
6319
6320 static struct pci_device_id qla4xxx_pci_tbl[] = {
6321 {
6322 .vendor = PCI_VENDOR_ID_QLOGIC,
6323 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
6324 .subvendor = PCI_ANY_ID,
6325 .subdevice = PCI_ANY_ID,
6326 },
6327 {
6328 .vendor = PCI_VENDOR_ID_QLOGIC,
6329 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
6330 .subvendor = PCI_ANY_ID,
6331 .subdevice = PCI_ANY_ID,
6332 },
6333 {
6334 .vendor = PCI_VENDOR_ID_QLOGIC,
6335 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
6336 .subvendor = PCI_ANY_ID,
6337 .subdevice = PCI_ANY_ID,
6338 },
6339 {
6340 .vendor = PCI_VENDOR_ID_QLOGIC,
6341 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
6342 .subvendor = PCI_ANY_ID,
6343 .subdevice = PCI_ANY_ID,
6344 },
6345 {
6346 .vendor = PCI_VENDOR_ID_QLOGIC,
6347 .device = PCI_DEVICE_ID_QLOGIC_ISP8324,
6348 .subvendor = PCI_ANY_ID,
6349 .subdevice = PCI_ANY_ID,
6350 },
6351 {0, 0},
6352 };
6353 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
6354
6355 static struct pci_driver qla4xxx_pci_driver = {
6356 .name = DRIVER_NAME,
6357 .id_table = qla4xxx_pci_tbl,
6358 .probe = qla4xxx_probe_adapter,
6359 .remove = qla4xxx_remove_adapter,
6360 .err_handler = &qla4xxx_err_handler,
6361 };
6362
6363 static int __init qla4xxx_module_init(void)
6364 {
6365 int ret;
6366
6367 /* Allocate cache for SRBs. */
6368 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
6369 SLAB_HWCACHE_ALIGN, NULL);
6370 if (srb_cachep == NULL) {
6371 printk(KERN_ERR
6372 "%s: Unable to allocate SRB cache..."
6373 "Failing load!\n", DRIVER_NAME);
6374 ret = -ENOMEM;
6375 goto no_srp_cache;
6376 }
6377
6378 /* Derive version string. */
6379 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
6380 if (ql4xextended_error_logging)
6381 strcat(qla4xxx_version_str, "-debug");
6382
6383 qla4xxx_scsi_transport =
6384 iscsi_register_transport(&qla4xxx_iscsi_transport);
6385 if (!qla4xxx_scsi_transport){
6386 ret = -ENODEV;
6387 goto release_srb_cache;
6388 }
6389
6390 ret = pci_register_driver(&qla4xxx_pci_driver);
6391 if (ret)
6392 goto unregister_transport;
6393
6394 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
6395 return 0;
6396
6397 unregister_transport:
6398 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6399 release_srb_cache:
6400 kmem_cache_destroy(srb_cachep);
6401 no_srp_cache:
6402 return ret;
6403 }
6404
6405 static void __exit qla4xxx_module_exit(void)
6406 {
6407 pci_unregister_driver(&qla4xxx_pci_driver);
6408 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6409 kmem_cache_destroy(srb_cachep);
6410 }
6411
6412 module_init(qla4xxx_module_init);
6413 module_exit(qla4xxx_module_exit);
6414
6415 MODULE_AUTHOR("QLogic Corporation");
6416 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
6417 MODULE_LICENSE("GPL");
6418 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
kernel source for telekom puls (alcatel/mediatek)