Merge tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
[linux-3.10.git] / drivers / scsi / qla4xxx / ql4_os.c
1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c)  2003-2010 QLogic Corporation
4  *
5  * See LICENSE.qla4xxx for copyright and licensing details.
6  */
7 #include <linux/moduleparam.h>
8 #include <linux/slab.h>
9 #include <linux/blkdev.h>
10 #include <linux/iscsi_boot_sysfs.h>
11 #include <linux/inet.h>
12
13 #include <scsi/scsi_tcq.h>
14 #include <scsi/scsicam.h>
15
16 #include "ql4_def.h"
17 #include "ql4_version.h"
18 #include "ql4_glbl.h"
19 #include "ql4_dbg.h"
20 #include "ql4_inline.h"
21
22 /*
23  * Driver version
24  */
25 static char qla4xxx_version_str[40];
26
27 /*
28  * SRB allocation cache
29  */
30 static struct kmem_cache *srb_cachep;
31
32 /*
33  * Module parameter information and variables
34  */
35 static int ql4xdisablesysfsboot = 1;
36 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
37 MODULE_PARM_DESC(ql4xdisablesysfsboot,
38                  " Set to disable exporting boot targets to sysfs.\n"
39                  "\t\t  0 - Export boot targets\n"
40                  "\t\t  1 - Do not export boot targets (Default)");
41
42 int ql4xdontresethba;
43 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
44 MODULE_PARM_DESC(ql4xdontresethba,
45                  " Don't reset the HBA for driver recovery.\n"
46                  "\t\t  0 - It will reset HBA (Default)\n"
47                  "\t\t  1 - It will NOT reset HBA");
48
49 int ql4xextended_error_logging;
50 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
51 MODULE_PARM_DESC(ql4xextended_error_logging,
52                  " Option to enable extended error logging.\n"
53                  "\t\t  0 - no logging (Default)\n"
54                  "\t\t  2 - debug logging");
55
56 int ql4xenablemsix = 1;
57 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
58 MODULE_PARM_DESC(ql4xenablemsix,
59                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
60                  "\t\t  0 = enable INTx interrupt mechanism.\n"
61                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
62                  "\t\t  2 = enable MSI interrupt mechanism.");
63
64 #define QL4_DEF_QDEPTH 32
65 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
66 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
67 MODULE_PARM_DESC(ql4xmaxqdepth,
68                  " Maximum queue depth to report for target devices.\n"
69                  "\t\t  Default: 32.");
70
71 static int ql4xqfulltracking = 1;
72 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
73 MODULE_PARM_DESC(ql4xqfulltracking,
74                  " Enable or disable dynamic tracking and adjustment of\n"
75                  "\t\t scsi device queue depth.\n"
76                  "\t\t  0 - Disable.\n"
77                  "\t\t  1 - Enable. (Default)");
78
79 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
80 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
81 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
82                 " Target Session Recovery Timeout.\n"
83                 "\t\t  Default: 120 sec.");
84
85 int ql4xmdcapmask = 0x1F;
86 module_param(ql4xmdcapmask, int, S_IRUGO);
87 MODULE_PARM_DESC(ql4xmdcapmask,
88                  " Set the Minidump driver capture mask level.\n"
89                  "\t\t  Default is 0x1F.\n"
90                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
91
92 int ql4xenablemd = 1;
93 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
94 MODULE_PARM_DESC(ql4xenablemd,
95                  " Set to enable minidump.\n"
96                  "\t\t  0 - disable minidump\n"
97                  "\t\t  1 - enable minidump (Default)");
98
99 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
100 /*
101  * SCSI host template entry points
102  */
103 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
104
105 /*
106  * iSCSI template entry points
107  */
108 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
109                                      enum iscsi_param param, char *buf);
110 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
111                                   enum iscsi_param param, char *buf);
112 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
113                                   enum iscsi_host_param param, char *buf);
114 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
115                                    uint32_t len);
116 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
117                                    enum iscsi_param_type param_type,
118                                    int param, char *buf);
119 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
120 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
121                                                  struct sockaddr *dst_addr,
122                                                  int non_blocking);
123 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
124 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
125 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
126                                 enum iscsi_param param, char *buf);
127 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
128 static struct iscsi_cls_conn *
129 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
130 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
131                              struct iscsi_cls_conn *cls_conn,
132                              uint64_t transport_fd, int is_leading);
133 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
134 static struct iscsi_cls_session *
135 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
136                         uint16_t qdepth, uint32_t initial_cmdsn);
137 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
138 static void qla4xxx_task_work(struct work_struct *wdata);
139 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
140 static int qla4xxx_task_xmit(struct iscsi_task *);
141 static void qla4xxx_task_cleanup(struct iscsi_task *);
142 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
143 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
144                                    struct iscsi_stats *stats);
145 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
146                              uint32_t iface_type, uint32_t payload_size,
147                              uint32_t pid, struct sockaddr *dst_addr);
148 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
149                                  uint32_t *num_entries, char *buf);
150 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
151
152 /*
153  * SCSI host template entry points
154  */
155 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
156 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
157 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
158 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
159 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
160 static int qla4xxx_slave_alloc(struct scsi_device *device);
161 static int qla4xxx_slave_configure(struct scsi_device *device);
162 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
163 static umode_t ql4_attr_is_visible(int param_type, int param);
164 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
165 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
166                                       int reason);
167
168 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
169     QLA82XX_LEGACY_INTR_CONFIG;
170
171 static struct scsi_host_template qla4xxx_driver_template = {
172         .module                 = THIS_MODULE,
173         .name                   = DRIVER_NAME,
174         .proc_name              = DRIVER_NAME,
175         .queuecommand           = qla4xxx_queuecommand,
176
177         .eh_abort_handler       = qla4xxx_eh_abort,
178         .eh_device_reset_handler = qla4xxx_eh_device_reset,
179         .eh_target_reset_handler = qla4xxx_eh_target_reset,
180         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
181         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
182
183         .slave_configure        = qla4xxx_slave_configure,
184         .slave_alloc            = qla4xxx_slave_alloc,
185         .slave_destroy          = qla4xxx_slave_destroy,
186         .change_queue_depth     = qla4xxx_change_queue_depth,
187
188         .this_id                = -1,
189         .cmd_per_lun            = 3,
190         .use_clustering         = ENABLE_CLUSTERING,
191         .sg_tablesize           = SG_ALL,
192
193         .max_sectors            = 0xFFFF,
194         .shost_attrs            = qla4xxx_host_attrs,
195         .host_reset             = qla4xxx_host_reset,
196         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
197 };
198
199 static struct iscsi_transport qla4xxx_iscsi_transport = {
200         .owner                  = THIS_MODULE,
201         .name                   = DRIVER_NAME,
202         .caps                   = CAP_TEXT_NEGO |
203                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
204                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
205                                   CAP_MULTI_R2T,
206         .attr_is_visible        = ql4_attr_is_visible,
207         .create_session         = qla4xxx_session_create,
208         .destroy_session        = qla4xxx_session_destroy,
209         .start_conn             = qla4xxx_conn_start,
210         .create_conn            = qla4xxx_conn_create,
211         .bind_conn              = qla4xxx_conn_bind,
212         .stop_conn              = iscsi_conn_stop,
213         .destroy_conn           = qla4xxx_conn_destroy,
214         .set_param              = iscsi_set_param,
215         .get_conn_param         = qla4xxx_conn_get_param,
216         .get_session_param      = qla4xxx_session_get_param,
217         .get_ep_param           = qla4xxx_get_ep_param,
218         .ep_connect             = qla4xxx_ep_connect,
219         .ep_poll                = qla4xxx_ep_poll,
220         .ep_disconnect          = qla4xxx_ep_disconnect,
221         .get_stats              = qla4xxx_conn_get_stats,
222         .send_pdu               = iscsi_conn_send_pdu,
223         .xmit_task              = qla4xxx_task_xmit,
224         .cleanup_task           = qla4xxx_task_cleanup,
225         .alloc_pdu              = qla4xxx_alloc_pdu,
226
227         .get_host_param         = qla4xxx_host_get_param,
228         .set_iface_param        = qla4xxx_iface_set_param,
229         .get_iface_param        = qla4xxx_get_iface_param,
230         .bsg_request            = qla4xxx_bsg_request,
231         .send_ping              = qla4xxx_send_ping,
232         .get_chap               = qla4xxx_get_chap_list,
233         .delete_chap            = qla4xxx_delete_chap,
234 };
235
236 static struct scsi_transport_template *qla4xxx_scsi_transport;
237
238 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
239                              uint32_t iface_type, uint32_t payload_size,
240                              uint32_t pid, struct sockaddr *dst_addr)
241 {
242         struct scsi_qla_host *ha = to_qla_host(shost);
243         struct sockaddr_in *addr;
244         struct sockaddr_in6 *addr6;
245         uint32_t options = 0;
246         uint8_t ipaddr[IPv6_ADDR_LEN];
247         int rval;
248
249         memset(ipaddr, 0, IPv6_ADDR_LEN);
250         /* IPv4 to IPv4 */
251         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
252             (dst_addr->sa_family == AF_INET)) {
253                 addr = (struct sockaddr_in *)dst_addr;
254                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
255                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
256                                   "dest: %pI4\n", __func__,
257                                   &ha->ip_config.ip_address, ipaddr));
258                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
259                                          ipaddr);
260                 if (rval)
261                         rval = -EINVAL;
262         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
263                    (dst_addr->sa_family == AF_INET6)) {
264                 /* IPv6 to IPv6 */
265                 addr6 = (struct sockaddr_in6 *)dst_addr;
266                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
267
268                 options |= PING_IPV6_PROTOCOL_ENABLE;
269
270                 /* Ping using LinkLocal address */
271                 if ((iface_num == 0) || (iface_num == 1)) {
272                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
273                                           "src: %pI6 dest: %pI6\n", __func__,
274                                           &ha->ip_config.ipv6_link_local_addr,
275                                           ipaddr));
276                         options |= PING_IPV6_LINKLOCAL_ADDR;
277                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
278                                                  pid, ipaddr);
279                 } else {
280                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
281                                    "not supported\n", __func__, iface_num);
282                         rval = -ENOSYS;
283                         goto exit_send_ping;
284                 }
285
286                 /*
287                  * If ping using LinkLocal address fails, try ping using
288                  * IPv6 address
289                  */
290                 if (rval != QLA_SUCCESS) {
291                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
292                         if (iface_num == 0) {
293                                 options |= PING_IPV6_ADDR0;
294                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
295                                                   "Ping src: %pI6 "
296                                                   "dest: %pI6\n", __func__,
297                                                   &ha->ip_config.ipv6_addr0,
298                                                   ipaddr));
299                         } else if (iface_num == 1) {
300                                 options |= PING_IPV6_ADDR1;
301                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
302                                                   "Ping src: %pI6 "
303                                                   "dest: %pI6\n", __func__,
304                                                   &ha->ip_config.ipv6_addr1,
305                                                   ipaddr));
306                         }
307                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
308                                                  pid, ipaddr);
309                         if (rval)
310                                 rval = -EINVAL;
311                 }
312         } else
313                 rval = -ENOSYS;
314 exit_send_ping:
315         return rval;
316 }
317
318 static umode_t ql4_attr_is_visible(int param_type, int param)
319 {
320         switch (param_type) {
321         case ISCSI_HOST_PARAM:
322                 switch (param) {
323                 case ISCSI_HOST_PARAM_HWADDRESS:
324                 case ISCSI_HOST_PARAM_IPADDRESS:
325                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
326                 case ISCSI_HOST_PARAM_PORT_STATE:
327                 case ISCSI_HOST_PARAM_PORT_SPEED:
328                         return S_IRUGO;
329                 default:
330                         return 0;
331                 }
332         case ISCSI_PARAM:
333                 switch (param) {
334                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
335                 case ISCSI_PARAM_PERSISTENT_PORT:
336                 case ISCSI_PARAM_CONN_ADDRESS:
337                 case ISCSI_PARAM_CONN_PORT:
338                 case ISCSI_PARAM_TARGET_NAME:
339                 case ISCSI_PARAM_TPGT:
340                 case ISCSI_PARAM_TARGET_ALIAS:
341                 case ISCSI_PARAM_MAX_BURST:
342                 case ISCSI_PARAM_MAX_R2T:
343                 case ISCSI_PARAM_FIRST_BURST:
344                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
345                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
346                 case ISCSI_PARAM_IFACE_NAME:
347                 case ISCSI_PARAM_CHAP_OUT_IDX:
348                 case ISCSI_PARAM_CHAP_IN_IDX:
349                 case ISCSI_PARAM_USERNAME:
350                 case ISCSI_PARAM_PASSWORD:
351                 case ISCSI_PARAM_USERNAME_IN:
352                 case ISCSI_PARAM_PASSWORD_IN:
353                         return S_IRUGO;
354                 default:
355                         return 0;
356                 }
357         case ISCSI_NET_PARAM:
358                 switch (param) {
359                 case ISCSI_NET_PARAM_IPV4_ADDR:
360                 case ISCSI_NET_PARAM_IPV4_SUBNET:
361                 case ISCSI_NET_PARAM_IPV4_GW:
362                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
363                 case ISCSI_NET_PARAM_IFACE_ENABLE:
364                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
365                 case ISCSI_NET_PARAM_IPV6_ADDR:
366                 case ISCSI_NET_PARAM_IPV6_ROUTER:
367                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
368                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
369                 case ISCSI_NET_PARAM_VLAN_ID:
370                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
371                 case ISCSI_NET_PARAM_VLAN_ENABLED:
372                 case ISCSI_NET_PARAM_MTU:
373                 case ISCSI_NET_PARAM_PORT:
374                         return S_IRUGO;
375                 default:
376                         return 0;
377                 }
378         }
379
380         return 0;
381 }
382
383 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
384                                   uint32_t *num_entries, char *buf)
385 {
386         struct scsi_qla_host *ha = to_qla_host(shost);
387         struct ql4_chap_table *chap_table;
388         struct iscsi_chap_rec *chap_rec;
389         int max_chap_entries = 0;
390         int valid_chap_entries = 0;
391         int ret = 0, i;
392
393         if (is_qla8022(ha))
394                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
395                                         sizeof(struct ql4_chap_table);
396         else
397                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
398
399         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
400                         __func__, *num_entries, chap_tbl_idx);
401
402         if (!buf) {
403                 ret = -ENOMEM;
404                 goto exit_get_chap_list;
405         }
406
407         chap_rec = (struct iscsi_chap_rec *) buf;
408         mutex_lock(&ha->chap_sem);
409         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
410                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
411                 if (chap_table->cookie !=
412                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
413                         continue;
414
415                 chap_rec->chap_tbl_idx = i;
416                 strncpy(chap_rec->username, chap_table->name,
417                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
418                 strncpy(chap_rec->password, chap_table->secret,
419                         QL4_CHAP_MAX_SECRET_LEN);
420                 chap_rec->password_length = chap_table->secret_len;
421
422                 if (chap_table->flags & BIT_7) /* local */
423                         chap_rec->chap_type = CHAP_TYPE_OUT;
424
425                 if (chap_table->flags & BIT_6) /* peer */
426                         chap_rec->chap_type = CHAP_TYPE_IN;
427
428                 chap_rec++;
429
430                 valid_chap_entries++;
431                 if (valid_chap_entries == *num_entries)
432                         break;
433                 else
434                         continue;
435         }
436         mutex_unlock(&ha->chap_sem);
437
438 exit_get_chap_list:
439         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
440                         __func__,  valid_chap_entries);
441         *num_entries = valid_chap_entries;
442         return ret;
443 }
444
445 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
446 {
447         int ret = 0;
448         uint16_t *chap_tbl_idx = (uint16_t *) data;
449         struct iscsi_cls_session *cls_session;
450         struct iscsi_session *sess;
451         struct ddb_entry *ddb_entry;
452
453         if (!iscsi_is_session_dev(dev))
454                 goto exit_is_chap_active;
455
456         cls_session = iscsi_dev_to_session(dev);
457         sess = cls_session->dd_data;
458         ddb_entry = sess->dd_data;
459
460         if (iscsi_session_chkready(cls_session))
461                 goto exit_is_chap_active;
462
463         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
464                 ret = 1;
465
466 exit_is_chap_active:
467         return ret;
468 }
469
470 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
471                                   uint16_t chap_tbl_idx)
472 {
473         int ret = 0;
474
475         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
476                                     __qla4xxx_is_chap_active);
477
478         return ret;
479 }
480
481 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
482 {
483         struct scsi_qla_host *ha = to_qla_host(shost);
484         struct ql4_chap_table *chap_table;
485         dma_addr_t chap_dma;
486         int max_chap_entries = 0;
487         uint32_t offset = 0;
488         uint32_t chap_size;
489         int ret = 0;
490
491         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
492         if (chap_table == NULL)
493                 return -ENOMEM;
494
495         memset(chap_table, 0, sizeof(struct ql4_chap_table));
496
497         if (is_qla8022(ha))
498                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
499                                    sizeof(struct ql4_chap_table);
500         else
501                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
502
503         if (chap_tbl_idx > max_chap_entries) {
504                 ret = -EINVAL;
505                 goto exit_delete_chap;
506         }
507
508         /* Check if chap index is in use.
509          * If chap is in use don't delet chap entry */
510         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
511         if (ret) {
512                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
513                            "delete from flash\n", chap_tbl_idx);
514                 ret = -EBUSY;
515                 goto exit_delete_chap;
516         }
517
518         chap_size = sizeof(struct ql4_chap_table);
519         if (is_qla40XX(ha))
520                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
521         else {
522                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
523                 /* flt_chap_size is CHAP table size for both ports
524                  * so divide it by 2 to calculate the offset for second port
525                  */
526                 if (ha->port_num == 1)
527                         offset += (ha->hw.flt_chap_size / 2);
528                 offset += (chap_tbl_idx * chap_size);
529         }
530
531         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
532         if (ret != QLA_SUCCESS) {
533                 ret = -EINVAL;
534                 goto exit_delete_chap;
535         }
536
537         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
538                           __le16_to_cpu(chap_table->cookie)));
539
540         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
541                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
542                 goto exit_delete_chap;
543         }
544
545         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
546
547         offset = FLASH_CHAP_OFFSET |
548                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
549         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
550                                 FLASH_OPT_RMW_COMMIT);
551         if (ret == QLA_SUCCESS && ha->chap_list) {
552                 mutex_lock(&ha->chap_sem);
553                 /* Update ha chap_list cache */
554                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
555                         chap_table, sizeof(struct ql4_chap_table));
556                 mutex_unlock(&ha->chap_sem);
557         }
558         if (ret != QLA_SUCCESS)
559                 ret =  -EINVAL;
560
561 exit_delete_chap:
562         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
563         return ret;
564 }
565
566 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
567                                    enum iscsi_param_type param_type,
568                                    int param, char *buf)
569 {
570         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
571         struct scsi_qla_host *ha = to_qla_host(shost);
572         int len = -ENOSYS;
573
574         if (param_type != ISCSI_NET_PARAM)
575                 return -ENOSYS;
576
577         switch (param) {
578         case ISCSI_NET_PARAM_IPV4_ADDR:
579                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
580                 break;
581         case ISCSI_NET_PARAM_IPV4_SUBNET:
582                 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
583                 break;
584         case ISCSI_NET_PARAM_IPV4_GW:
585                 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
586                 break;
587         case ISCSI_NET_PARAM_IFACE_ENABLE:
588                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
589                         len = sprintf(buf, "%s\n",
590                                       (ha->ip_config.ipv4_options &
591                                        IPOPT_IPV4_PROTOCOL_ENABLE) ?
592                                       "enabled" : "disabled");
593                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
594                         len = sprintf(buf, "%s\n",
595                                       (ha->ip_config.ipv6_options &
596                                        IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
597                                        "enabled" : "disabled");
598                 break;
599         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
600                 len = sprintf(buf, "%s\n",
601                               (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
602                               "dhcp" : "static");
603                 break;
604         case ISCSI_NET_PARAM_IPV6_ADDR:
605                 if (iface->iface_num == 0)
606                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
607                 if (iface->iface_num == 1)
608                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
609                 break;
610         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
611                 len = sprintf(buf, "%pI6\n",
612                               &ha->ip_config.ipv6_link_local_addr);
613                 break;
614         case ISCSI_NET_PARAM_IPV6_ROUTER:
615                 len = sprintf(buf, "%pI6\n",
616                               &ha->ip_config.ipv6_default_router_addr);
617                 break;
618         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
619                 len = sprintf(buf, "%s\n",
620                               (ha->ip_config.ipv6_addl_options &
621                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
622                                "nd" : "static");
623                 break;
624         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
625                 len = sprintf(buf, "%s\n",
626                               (ha->ip_config.ipv6_addl_options &
627                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
628                                "auto" : "static");
629                 break;
630         case ISCSI_NET_PARAM_VLAN_ID:
631                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
632                         len = sprintf(buf, "%d\n",
633                                       (ha->ip_config.ipv4_vlan_tag &
634                                        ISCSI_MAX_VLAN_ID));
635                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
636                         len = sprintf(buf, "%d\n",
637                                       (ha->ip_config.ipv6_vlan_tag &
638                                        ISCSI_MAX_VLAN_ID));
639                 break;
640         case ISCSI_NET_PARAM_VLAN_PRIORITY:
641                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
642                         len = sprintf(buf, "%d\n",
643                                       ((ha->ip_config.ipv4_vlan_tag >> 13) &
644                                         ISCSI_MAX_VLAN_PRIORITY));
645                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
646                         len = sprintf(buf, "%d\n",
647                                       ((ha->ip_config.ipv6_vlan_tag >> 13) &
648                                         ISCSI_MAX_VLAN_PRIORITY));
649                 break;
650         case ISCSI_NET_PARAM_VLAN_ENABLED:
651                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
652                         len = sprintf(buf, "%s\n",
653                                       (ha->ip_config.ipv4_options &
654                                        IPOPT_VLAN_TAGGING_ENABLE) ?
655                                        "enabled" : "disabled");
656                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
657                         len = sprintf(buf, "%s\n",
658                                       (ha->ip_config.ipv6_options &
659                                        IPV6_OPT_VLAN_TAGGING_ENABLE) ?
660                                        "enabled" : "disabled");
661                 break;
662         case ISCSI_NET_PARAM_MTU:
663                 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
664                 break;
665         case ISCSI_NET_PARAM_PORT:
666                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
667                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
668                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
669                         len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
670                 break;
671         default:
672                 len = -ENOSYS;
673         }
674
675         return len;
676 }
677
678 static struct iscsi_endpoint *
679 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
680                    int non_blocking)
681 {
682         int ret;
683         struct iscsi_endpoint *ep;
684         struct qla_endpoint *qla_ep;
685         struct scsi_qla_host *ha;
686         struct sockaddr_in *addr;
687         struct sockaddr_in6 *addr6;
688
689         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
690         if (!shost) {
691                 ret = -ENXIO;
692                 printk(KERN_ERR "%s: shost is NULL\n",
693                        __func__);
694                 return ERR_PTR(ret);
695         }
696
697         ha = iscsi_host_priv(shost);
698
699         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
700         if (!ep) {
701                 ret = -ENOMEM;
702                 return ERR_PTR(ret);
703         }
704
705         qla_ep = ep->dd_data;
706         memset(qla_ep, 0, sizeof(struct qla_endpoint));
707         if (dst_addr->sa_family == AF_INET) {
708                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
709                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
710                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
711                                   (char *)&addr->sin_addr));
712         } else if (dst_addr->sa_family == AF_INET6) {
713                 memcpy(&qla_ep->dst_addr, dst_addr,
714                        sizeof(struct sockaddr_in6));
715                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
716                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
717                                   (char *)&addr6->sin6_addr));
718         }
719
720         qla_ep->host = shost;
721
722         return ep;
723 }
724
725 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
726 {
727         struct qla_endpoint *qla_ep;
728         struct scsi_qla_host *ha;
729         int ret = 0;
730
731         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
732         qla_ep = ep->dd_data;
733         ha = to_qla_host(qla_ep->host);
734
735         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
736                 ret = 1;
737
738         return ret;
739 }
740
741 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
742 {
743         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
744         iscsi_destroy_endpoint(ep);
745 }
746
747 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
748                                 enum iscsi_param param,
749                                 char *buf)
750 {
751         struct qla_endpoint *qla_ep = ep->dd_data;
752         struct sockaddr *dst_addr;
753
754         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
755
756         switch (param) {
757         case ISCSI_PARAM_CONN_PORT:
758         case ISCSI_PARAM_CONN_ADDRESS:
759                 if (!qla_ep)
760                         return -ENOTCONN;
761
762                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
763                 if (!dst_addr)
764                         return -ENOTCONN;
765
766                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
767                                                  &qla_ep->dst_addr, param, buf);
768         default:
769                 return -ENOSYS;
770         }
771 }
772
773 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
774                                    struct iscsi_stats *stats)
775 {
776         struct iscsi_session *sess;
777         struct iscsi_cls_session *cls_sess;
778         struct ddb_entry *ddb_entry;
779         struct scsi_qla_host *ha;
780         struct ql_iscsi_stats *ql_iscsi_stats;
781         int stats_size;
782         int ret;
783         dma_addr_t iscsi_stats_dma;
784
785         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
786
787         cls_sess = iscsi_conn_to_session(cls_conn);
788         sess = cls_sess->dd_data;
789         ddb_entry = sess->dd_data;
790         ha = ddb_entry->ha;
791
792         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
793         /* Allocate memory */
794         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
795                                             &iscsi_stats_dma, GFP_KERNEL);
796         if (!ql_iscsi_stats) {
797                 ql4_printk(KERN_ERR, ha,
798                            "Unable to allocate memory for iscsi stats\n");
799                 goto exit_get_stats;
800         }
801
802         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
803                                      iscsi_stats_dma);
804         if (ret != QLA_SUCCESS) {
805                 ql4_printk(KERN_ERR, ha,
806                            "Unable to retrieve iscsi stats\n");
807                 goto free_stats;
808         }
809
810         /* octets */
811         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
812         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
813         /* xmit pdus */
814         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
815         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
816         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
817         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
818         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
819         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
820         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
821         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
822         /* recv pdus */
823         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
824         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
825         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
826         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
827         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
828         stats->logoutrsp_pdus =
829                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
830         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
831         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
832         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
833
834 free_stats:
835         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
836                           iscsi_stats_dma);
837 exit_get_stats:
838         return;
839 }
840
841 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
842 {
843         struct iscsi_cls_session *session;
844         struct iscsi_session *sess;
845         unsigned long flags;
846         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
847
848         session = starget_to_session(scsi_target(sc->device));
849         sess = session->dd_data;
850
851         spin_lock_irqsave(&session->lock, flags);
852         if (session->state == ISCSI_SESSION_FAILED)
853                 ret = BLK_EH_RESET_TIMER;
854         spin_unlock_irqrestore(&session->lock, flags);
855
856         return ret;
857 }
858
859 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
860 {
861         struct scsi_qla_host *ha = to_qla_host(shost);
862         struct iscsi_cls_host *ihost = shost->shost_data;
863         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
864
865         qla4xxx_get_firmware_state(ha);
866
867         switch (ha->addl_fw_state & 0x0F00) {
868         case FW_ADDSTATE_LINK_SPEED_10MBPS:
869                 speed = ISCSI_PORT_SPEED_10MBPS;
870                 break;
871         case FW_ADDSTATE_LINK_SPEED_100MBPS:
872                 speed = ISCSI_PORT_SPEED_100MBPS;
873                 break;
874         case FW_ADDSTATE_LINK_SPEED_1GBPS:
875                 speed = ISCSI_PORT_SPEED_1GBPS;
876                 break;
877         case FW_ADDSTATE_LINK_SPEED_10GBPS:
878                 speed = ISCSI_PORT_SPEED_10GBPS;
879                 break;
880         }
881         ihost->port_speed = speed;
882 }
883
884 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
885 {
886         struct scsi_qla_host *ha = to_qla_host(shost);
887         struct iscsi_cls_host *ihost = shost->shost_data;
888         uint32_t state = ISCSI_PORT_STATE_DOWN;
889
890         if (test_bit(AF_LINK_UP, &ha->flags))
891                 state = ISCSI_PORT_STATE_UP;
892
893         ihost->port_state = state;
894 }
895
896 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
897                                   enum iscsi_host_param param, char *buf)
898 {
899         struct scsi_qla_host *ha = to_qla_host(shost);
900         int len;
901
902         switch (param) {
903         case ISCSI_HOST_PARAM_HWADDRESS:
904                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
905                 break;
906         case ISCSI_HOST_PARAM_IPADDRESS:
907                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
908                 break;
909         case ISCSI_HOST_PARAM_INITIATOR_NAME:
910                 len = sprintf(buf, "%s\n", ha->name_string);
911                 break;
912         case ISCSI_HOST_PARAM_PORT_STATE:
913                 qla4xxx_set_port_state(shost);
914                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
915                 break;
916         case ISCSI_HOST_PARAM_PORT_SPEED:
917                 qla4xxx_set_port_speed(shost);
918                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
919                 break;
920         default:
921                 return -ENOSYS;
922         }
923
924         return len;
925 }
926
927 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
928 {
929         if (ha->iface_ipv4)
930                 return;
931
932         /* IPv4 */
933         ha->iface_ipv4 = iscsi_create_iface(ha->host,
934                                             &qla4xxx_iscsi_transport,
935                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
936         if (!ha->iface_ipv4)
937                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
938                            "iface0.\n");
939 }
940
941 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
942 {
943         if (!ha->iface_ipv6_0)
944                 /* IPv6 iface-0 */
945                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
946                                                       &qla4xxx_iscsi_transport,
947                                                       ISCSI_IFACE_TYPE_IPV6, 0,
948                                                       0);
949         if (!ha->iface_ipv6_0)
950                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
951                            "iface0.\n");
952
953         if (!ha->iface_ipv6_1)
954                 /* IPv6 iface-1 */
955                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
956                                                       &qla4xxx_iscsi_transport,
957                                                       ISCSI_IFACE_TYPE_IPV6, 1,
958                                                       0);
959         if (!ha->iface_ipv6_1)
960                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
961                            "iface1.\n");
962 }
963
964 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
965 {
966         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
967                 qla4xxx_create_ipv4_iface(ha);
968
969         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
970                 qla4xxx_create_ipv6_iface(ha);
971 }
972
973 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
974 {
975         if (ha->iface_ipv4) {
976                 iscsi_destroy_iface(ha->iface_ipv4);
977                 ha->iface_ipv4 = NULL;
978         }
979 }
980
981 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
982 {
983         if (ha->iface_ipv6_0) {
984                 iscsi_destroy_iface(ha->iface_ipv6_0);
985                 ha->iface_ipv6_0 = NULL;
986         }
987         if (ha->iface_ipv6_1) {
988                 iscsi_destroy_iface(ha->iface_ipv6_1);
989                 ha->iface_ipv6_1 = NULL;
990         }
991 }
992
993 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
994 {
995         qla4xxx_destroy_ipv4_iface(ha);
996         qla4xxx_destroy_ipv6_iface(ha);
997 }
998
999 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1000                              struct iscsi_iface_param_info *iface_param,
1001                              struct addr_ctrl_blk *init_fw_cb)
1002 {
1003         /*
1004          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1005          * iface_num 1 is valid only for IPv6 Addr.
1006          */
1007         switch (iface_param->param) {
1008         case ISCSI_NET_PARAM_IPV6_ADDR:
1009                 if (iface_param->iface_num & 0x1)
1010                         /* IPv6 Addr 1 */
1011                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1012                                sizeof(init_fw_cb->ipv6_addr1));
1013                 else
1014                         /* IPv6 Addr 0 */
1015                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1016                                sizeof(init_fw_cb->ipv6_addr0));
1017                 break;
1018         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1019                 if (iface_param->iface_num & 0x1)
1020                         break;
1021                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1022                        sizeof(init_fw_cb->ipv6_if_id));
1023                 break;
1024         case ISCSI_NET_PARAM_IPV6_ROUTER:
1025                 if (iface_param->iface_num & 0x1)
1026                         break;
1027                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1028                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1029                 break;
1030         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1031                 /* Autocfg applies to even interface */
1032                 if (iface_param->iface_num & 0x1)
1033                         break;
1034
1035                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1036                         init_fw_cb->ipv6_addtl_opts &=
1037                                 cpu_to_le16(
1038                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1039                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1040                         init_fw_cb->ipv6_addtl_opts |=
1041                                 cpu_to_le16(
1042                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1043                 else
1044                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1045                                    "IPv6 addr\n");
1046                 break;
1047         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1048                 /* Autocfg applies to even interface */
1049                 if (iface_param->iface_num & 0x1)
1050                         break;
1051
1052                 if (iface_param->value[0] ==
1053                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1054                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1055                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1056                 else if (iface_param->value[0] ==
1057                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1058                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1059                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1060                 else
1061                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1062                                    "IPv6 linklocal addr\n");
1063                 break;
1064         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1065                 /* Autocfg applies to even interface */
1066                 if (iface_param->iface_num & 0x1)
1067                         break;
1068
1069                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1070                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1071                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1072                 break;
1073         case ISCSI_NET_PARAM_IFACE_ENABLE:
1074                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1075                         init_fw_cb->ipv6_opts |=
1076                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1077                         qla4xxx_create_ipv6_iface(ha);
1078                 } else {
1079                         init_fw_cb->ipv6_opts &=
1080                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1081                                             0xFFFF);
1082                         qla4xxx_destroy_ipv6_iface(ha);
1083                 }
1084                 break;
1085         case ISCSI_NET_PARAM_VLAN_TAG:
1086                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1087                         break;
1088                 init_fw_cb->ipv6_vlan_tag =
1089                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1090                 break;
1091         case ISCSI_NET_PARAM_VLAN_ENABLED:
1092                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1093                         init_fw_cb->ipv6_opts |=
1094                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1095                 else
1096                         init_fw_cb->ipv6_opts &=
1097                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1098                 break;
1099         case ISCSI_NET_PARAM_MTU:
1100                 init_fw_cb->eth_mtu_size =
1101                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1102                 break;
1103         case ISCSI_NET_PARAM_PORT:
1104                 /* Autocfg applies to even interface */
1105                 if (iface_param->iface_num & 0x1)
1106                         break;
1107
1108                 init_fw_cb->ipv6_port =
1109                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1110                 break;
1111         default:
1112                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1113                            iface_param->param);
1114                 break;
1115         }
1116 }
1117
1118 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1119                              struct iscsi_iface_param_info *iface_param,
1120                              struct addr_ctrl_blk *init_fw_cb)
1121 {
1122         switch (iface_param->param) {
1123         case ISCSI_NET_PARAM_IPV4_ADDR:
1124                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1125                        sizeof(init_fw_cb->ipv4_addr));
1126                 break;
1127         case ISCSI_NET_PARAM_IPV4_SUBNET:
1128                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1129                        sizeof(init_fw_cb->ipv4_subnet));
1130                 break;
1131         case ISCSI_NET_PARAM_IPV4_GW:
1132                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1133                        sizeof(init_fw_cb->ipv4_gw_addr));
1134                 break;
1135         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1136                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1137                         init_fw_cb->ipv4_tcp_opts |=
1138                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
1139                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1140                         init_fw_cb->ipv4_tcp_opts &=
1141                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1142                 else
1143                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1144                 break;
1145         case ISCSI_NET_PARAM_IFACE_ENABLE:
1146                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1147                         init_fw_cb->ipv4_ip_opts |=
1148                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1149                         qla4xxx_create_ipv4_iface(ha);
1150                 } else {
1151                         init_fw_cb->ipv4_ip_opts &=
1152                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1153                                             0xFFFF);
1154                         qla4xxx_destroy_ipv4_iface(ha);
1155                 }
1156                 break;
1157         case ISCSI_NET_PARAM_VLAN_TAG:
1158                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1159                         break;
1160                 init_fw_cb->ipv4_vlan_tag =
1161                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1162                 break;
1163         case ISCSI_NET_PARAM_VLAN_ENABLED:
1164                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1165                         init_fw_cb->ipv4_ip_opts |=
1166                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1167                 else
1168                         init_fw_cb->ipv4_ip_opts &=
1169                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1170                 break;
1171         case ISCSI_NET_PARAM_MTU:
1172                 init_fw_cb->eth_mtu_size =
1173                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1174                 break;
1175         case ISCSI_NET_PARAM_PORT:
1176                 init_fw_cb->ipv4_port =
1177                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1178                 break;
1179         default:
1180                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1181                            iface_param->param);
1182                 break;
1183         }
1184 }
1185
1186 static void
1187 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1188 {
1189         struct addr_ctrl_blk_def *acb;
1190         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1191         memset(acb->reserved1, 0, sizeof(acb->reserved1));
1192         memset(acb->reserved2, 0, sizeof(acb->reserved2));
1193         memset(acb->reserved3, 0, sizeof(acb->reserved3));
1194         memset(acb->reserved4, 0, sizeof(acb->reserved4));
1195         memset(acb->reserved5, 0, sizeof(acb->reserved5));
1196         memset(acb->reserved6, 0, sizeof(acb->reserved6));
1197         memset(acb->reserved7, 0, sizeof(acb->reserved7));
1198         memset(acb->reserved8, 0, sizeof(acb->reserved8));
1199         memset(acb->reserved9, 0, sizeof(acb->reserved9));
1200         memset(acb->reserved10, 0, sizeof(acb->reserved10));
1201         memset(acb->reserved11, 0, sizeof(acb->reserved11));
1202         memset(acb->reserved12, 0, sizeof(acb->reserved12));
1203         memset(acb->reserved13, 0, sizeof(acb->reserved13));
1204         memset(acb->reserved14, 0, sizeof(acb->reserved14));
1205         memset(acb->reserved15, 0, sizeof(acb->reserved15));
1206 }
1207
1208 static int
1209 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1210 {
1211         struct scsi_qla_host *ha = to_qla_host(shost);
1212         int rval = 0;
1213         struct iscsi_iface_param_info *iface_param = NULL;
1214         struct addr_ctrl_blk *init_fw_cb = NULL;
1215         dma_addr_t init_fw_cb_dma;
1216         uint32_t mbox_cmd[MBOX_REG_COUNT];
1217         uint32_t mbox_sts[MBOX_REG_COUNT];
1218         uint32_t rem = len;
1219         struct nlattr *attr;
1220
1221         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1222                                         sizeof(struct addr_ctrl_blk),
1223                                         &init_fw_cb_dma, GFP_KERNEL);
1224         if (!init_fw_cb) {
1225                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1226                            __func__);
1227                 return -ENOMEM;
1228         }
1229
1230         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1231         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1232         memset(&mbox_sts, 0, sizeof(mbox_sts));
1233
1234         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1235                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1236                 rval = -EIO;
1237                 goto exit_init_fw_cb;
1238         }
1239
1240         nla_for_each_attr(attr, data, len, rem) {
1241                 iface_param = nla_data(attr);
1242
1243                 if (iface_param->param_type != ISCSI_NET_PARAM)
1244                         continue;
1245
1246                 switch (iface_param->iface_type) {
1247                 case ISCSI_IFACE_TYPE_IPV4:
1248                         switch (iface_param->iface_num) {
1249                         case 0:
1250                                 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1251                                 break;
1252                         default:
1253                                 /* Cannot have more than one IPv4 interface */
1254                                 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1255                                            "number = %d\n",
1256                                            iface_param->iface_num);
1257                                 break;
1258                         }
1259                         break;
1260                 case ISCSI_IFACE_TYPE_IPV6:
1261                         switch (iface_param->iface_num) {
1262                         case 0:
1263                         case 1:
1264                                 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1265                                 break;
1266                         default:
1267                                 /* Cannot have more than two IPv6 interface */
1268                                 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1269                                            "number = %d\n",
1270                                            iface_param->iface_num);
1271                                 break;
1272                         }
1273                         break;
1274                 default:
1275                         ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1276                         break;
1277                 }
1278         }
1279
1280         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1281
1282         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1283                                  sizeof(struct addr_ctrl_blk),
1284                                  FLASH_OPT_RMW_COMMIT);
1285         if (rval != QLA_SUCCESS) {
1286                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1287                            __func__);
1288                 rval = -EIO;
1289                 goto exit_init_fw_cb;
1290         }
1291
1292         rval = qla4xxx_disable_acb(ha);
1293         if (rval != QLA_SUCCESS) {
1294                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1295                            __func__);
1296                 rval = -EIO;
1297                 goto exit_init_fw_cb;
1298         }
1299
1300         wait_for_completion_timeout(&ha->disable_acb_comp,
1301                                     DISABLE_ACB_TOV * HZ);
1302
1303         qla4xxx_initcb_to_acb(init_fw_cb);
1304
1305         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1306         if (rval != QLA_SUCCESS) {
1307                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1308                            __func__);
1309                 rval = -EIO;
1310                 goto exit_init_fw_cb;
1311         }
1312
1313         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1314         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1315                                   init_fw_cb_dma);
1316
1317 exit_init_fw_cb:
1318         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1319                           init_fw_cb, init_fw_cb_dma);
1320
1321         return rval;
1322 }
1323
1324 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1325                                      enum iscsi_param param, char *buf)
1326 {
1327         struct iscsi_session *sess = cls_sess->dd_data;
1328         struct ddb_entry *ddb_entry = sess->dd_data;
1329         struct scsi_qla_host *ha = ddb_entry->ha;
1330         int rval, len;
1331         uint16_t idx;
1332
1333         switch (param) {
1334         case ISCSI_PARAM_CHAP_IN_IDX:
1335                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1336                                               sess->password_in, BIDI_CHAP,
1337                                               &idx);
1338                 if (rval)
1339                         return -EINVAL;
1340
1341                 len = sprintf(buf, "%hu\n", idx);
1342                 break;
1343         case ISCSI_PARAM_CHAP_OUT_IDX:
1344                 rval = qla4xxx_get_chap_index(ha, sess->username,
1345                                               sess->password, LOCAL_CHAP,
1346                                               &idx);
1347                 if (rval)
1348                         return -EINVAL;
1349
1350                 len = sprintf(buf, "%hu\n", idx);
1351                 break;
1352         default:
1353                 return iscsi_session_get_param(cls_sess, param, buf);
1354         }
1355
1356         return len;
1357 }
1358
1359 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1360                                   enum iscsi_param param, char *buf)
1361 {
1362         struct iscsi_conn *conn;
1363         struct qla_conn *qla_conn;
1364         struct sockaddr *dst_addr;
1365         int len = 0;
1366
1367         conn = cls_conn->dd_data;
1368         qla_conn = conn->dd_data;
1369         dst_addr = &qla_conn->qla_ep->dst_addr;
1370
1371         switch (param) {
1372         case ISCSI_PARAM_CONN_PORT:
1373         case ISCSI_PARAM_CONN_ADDRESS:
1374                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1375                                                  dst_addr, param, buf);
1376         default:
1377                 return iscsi_conn_get_param(cls_conn, param, buf);
1378         }
1379
1380         return len;
1381
1382 }
1383
1384 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1385 {
1386         uint32_t mbx_sts = 0;
1387         uint16_t tmp_ddb_index;
1388         int ret;
1389
1390 get_ddb_index:
1391         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1392
1393         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1394                 DEBUG2(ql4_printk(KERN_INFO, ha,
1395                                   "Free DDB index not available\n"));
1396                 ret = QLA_ERROR;
1397                 goto exit_get_ddb_index;
1398         }
1399
1400         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1401                 goto get_ddb_index;
1402
1403         DEBUG2(ql4_printk(KERN_INFO, ha,
1404                           "Found a free DDB index at %d\n", tmp_ddb_index));
1405         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1406         if (ret == QLA_ERROR) {
1407                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1408                         ql4_printk(KERN_INFO, ha,
1409                                    "DDB index = %d not available trying next\n",
1410                                    tmp_ddb_index);
1411                         goto get_ddb_index;
1412                 }
1413                 DEBUG2(ql4_printk(KERN_INFO, ha,
1414                                   "Free FW DDB not available\n"));
1415         }
1416
1417         *ddb_index = tmp_ddb_index;
1418
1419 exit_get_ddb_index:
1420         return ret;
1421 }
1422
1423 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1424                                    struct ddb_entry *ddb_entry,
1425                                    char *existing_ipaddr,
1426                                    char *user_ipaddr)
1427 {
1428         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1429         char formatted_ipaddr[DDB_IPADDR_LEN];
1430         int status = QLA_SUCCESS, ret = 0;
1431
1432         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1433                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1434                                '\0', NULL);
1435                 if (ret == 0) {
1436                         status = QLA_ERROR;
1437                         goto out_match;
1438                 }
1439                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1440         } else {
1441                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1442                                '\0', NULL);
1443                 if (ret == 0) {
1444                         status = QLA_ERROR;
1445                         goto out_match;
1446                 }
1447                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1448         }
1449
1450         if (strcmp(existing_ipaddr, formatted_ipaddr))
1451                 status = QLA_ERROR;
1452
1453 out_match:
1454         return status;
1455 }
1456
1457 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1458                                       struct iscsi_cls_conn *cls_conn)
1459 {
1460         int idx = 0, max_ddbs, rval;
1461         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1462         struct iscsi_session *sess, *existing_sess;
1463         struct iscsi_conn *conn, *existing_conn;
1464         struct ddb_entry *ddb_entry;
1465
1466         sess = cls_sess->dd_data;
1467         conn = cls_conn->dd_data;
1468
1469         if (sess->targetname == NULL ||
1470             conn->persistent_address == NULL ||
1471             conn->persistent_port == 0)
1472                 return QLA_ERROR;
1473
1474         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1475                                      MAX_DEV_DB_ENTRIES;
1476
1477         for (idx = 0; idx < max_ddbs; idx++) {
1478                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1479                 if (ddb_entry == NULL)
1480                         continue;
1481
1482                 if (ddb_entry->ddb_type != FLASH_DDB)
1483                         continue;
1484
1485                 existing_sess = ddb_entry->sess->dd_data;
1486                 existing_conn = ddb_entry->conn->dd_data;
1487
1488                 if (existing_sess->targetname == NULL ||
1489                     existing_conn->persistent_address == NULL ||
1490                     existing_conn->persistent_port == 0)
1491                         continue;
1492
1493                 DEBUG2(ql4_printk(KERN_INFO, ha,
1494                                   "IQN = %s User IQN = %s\n",
1495                                   existing_sess->targetname,
1496                                   sess->targetname));
1497
1498                 DEBUG2(ql4_printk(KERN_INFO, ha,
1499                                   "IP = %s User IP = %s\n",
1500                                   existing_conn->persistent_address,
1501                                   conn->persistent_address));
1502
1503                 DEBUG2(ql4_printk(KERN_INFO, ha,
1504                                   "Port = %d User Port = %d\n",
1505                                   existing_conn->persistent_port,
1506                                   conn->persistent_port));
1507
1508                 if (strcmp(existing_sess->targetname, sess->targetname))
1509                         continue;
1510                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1511                                         existing_conn->persistent_address,
1512                                         conn->persistent_address);
1513                 if (rval == QLA_ERROR)
1514                         continue;
1515                 if (existing_conn->persistent_port != conn->persistent_port)
1516                         continue;
1517                 break;
1518         }
1519
1520         if (idx == max_ddbs)
1521                 return QLA_ERROR;
1522
1523         DEBUG2(ql4_printk(KERN_INFO, ha,
1524                           "Match found in fwdb sessions\n"));
1525         return QLA_SUCCESS;
1526 }
1527
1528 static struct iscsi_cls_session *
1529 qla4xxx_session_create(struct iscsi_endpoint *ep,
1530                         uint16_t cmds_max, uint16_t qdepth,
1531                         uint32_t initial_cmdsn)
1532 {
1533         struct iscsi_cls_session *cls_sess;
1534         struct scsi_qla_host *ha;
1535         struct qla_endpoint *qla_ep;
1536         struct ddb_entry *ddb_entry;
1537         uint16_t ddb_index;
1538         struct iscsi_session *sess;
1539         struct sockaddr *dst_addr;
1540         int ret;
1541
1542         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1543         if (!ep) {
1544                 printk(KERN_ERR "qla4xxx: missing ep.\n");
1545                 return NULL;
1546         }
1547
1548         qla_ep = ep->dd_data;
1549         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1550         ha = to_qla_host(qla_ep->host);
1551
1552         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1553         if (ret == QLA_ERROR)
1554                 return NULL;
1555
1556         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1557                                        cmds_max, sizeof(struct ddb_entry),
1558                                        sizeof(struct ql4_task_data),
1559                                        initial_cmdsn, ddb_index);
1560         if (!cls_sess)
1561                 return NULL;
1562
1563         sess = cls_sess->dd_data;
1564         ddb_entry = sess->dd_data;
1565         ddb_entry->fw_ddb_index = ddb_index;
1566         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1567         ddb_entry->ha = ha;
1568         ddb_entry->sess = cls_sess;
1569         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1570         ddb_entry->ddb_change = qla4xxx_ddb_change;
1571         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1572         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1573         ha->tot_ddbs++;
1574
1575         return cls_sess;
1576 }
1577
1578 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1579 {
1580         struct iscsi_session *sess;
1581         struct ddb_entry *ddb_entry;
1582         struct scsi_qla_host *ha;
1583         unsigned long flags, wtime;
1584         struct dev_db_entry *fw_ddb_entry = NULL;
1585         dma_addr_t fw_ddb_entry_dma;
1586         uint32_t ddb_state;
1587         int ret;
1588
1589         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1590         sess = cls_sess->dd_data;
1591         ddb_entry = sess->dd_data;
1592         ha = ddb_entry->ha;
1593
1594         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1595                                           &fw_ddb_entry_dma, GFP_KERNEL);
1596         if (!fw_ddb_entry) {
1597                 ql4_printk(KERN_ERR, ha,
1598                            "%s: Unable to allocate dma buffer\n", __func__);
1599                 goto destroy_session;
1600         }
1601
1602         wtime = jiffies + (HZ * LOGOUT_TOV);
1603         do {
1604                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1605                                               fw_ddb_entry, fw_ddb_entry_dma,
1606                                               NULL, NULL, &ddb_state, NULL,
1607                                               NULL, NULL);
1608                 if (ret == QLA_ERROR)
1609                         goto destroy_session;
1610
1611                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1612                     (ddb_state == DDB_DS_SESSION_FAILED))
1613                         goto destroy_session;
1614
1615                 schedule_timeout_uninterruptible(HZ);
1616         } while ((time_after(wtime, jiffies)));
1617
1618 destroy_session:
1619         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1620
1621         spin_lock_irqsave(&ha->hardware_lock, flags);
1622         qla4xxx_free_ddb(ha, ddb_entry);
1623         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1624
1625         iscsi_session_teardown(cls_sess);
1626
1627         if (fw_ddb_entry)
1628                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1629                                   fw_ddb_entry, fw_ddb_entry_dma);
1630 }
1631
1632 static struct iscsi_cls_conn *
1633 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1634 {
1635         struct iscsi_cls_conn *cls_conn;
1636         struct iscsi_session *sess;
1637         struct ddb_entry *ddb_entry;
1638
1639         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1640         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1641                                     conn_idx);
1642         if (!cls_conn)
1643                 return NULL;
1644
1645         sess = cls_sess->dd_data;
1646         ddb_entry = sess->dd_data;
1647         ddb_entry->conn = cls_conn;
1648
1649         return cls_conn;
1650 }
1651
1652 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1653                              struct iscsi_cls_conn *cls_conn,
1654                              uint64_t transport_fd, int is_leading)
1655 {
1656         struct iscsi_conn *conn;
1657         struct qla_conn *qla_conn;
1658         struct iscsi_endpoint *ep;
1659
1660         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1661
1662         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1663                 return -EINVAL;
1664         ep = iscsi_lookup_endpoint(transport_fd);
1665         conn = cls_conn->dd_data;
1666         qla_conn = conn->dd_data;
1667         qla_conn->qla_ep = ep->dd_data;
1668         return 0;
1669 }
1670
1671 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1672 {
1673         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1674         struct iscsi_session *sess;
1675         struct ddb_entry *ddb_entry;
1676         struct scsi_qla_host *ha;
1677         struct dev_db_entry *fw_ddb_entry = NULL;
1678         dma_addr_t fw_ddb_entry_dma;
1679         uint32_t mbx_sts = 0;
1680         int ret = 0;
1681         int status = QLA_SUCCESS;
1682
1683         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1684         sess = cls_sess->dd_data;
1685         ddb_entry = sess->dd_data;
1686         ha = ddb_entry->ha;
1687
1688         /* Check if we have  matching FW DDB, if yes then do not
1689          * login to this target. This could cause target to logout previous
1690          * connection
1691          */
1692         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1693         if (ret == QLA_SUCCESS) {
1694                 ql4_printk(KERN_INFO, ha,
1695                            "Session already exist in FW.\n");
1696                 ret = -EEXIST;
1697                 goto exit_conn_start;
1698         }
1699
1700         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1701                                           &fw_ddb_entry_dma, GFP_KERNEL);
1702         if (!fw_ddb_entry) {
1703                 ql4_printk(KERN_ERR, ha,
1704                            "%s: Unable to allocate dma buffer\n", __func__);
1705                 ret = -ENOMEM;
1706                 goto exit_conn_start;
1707         }
1708
1709         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1710         if (ret) {
1711                 /* If iscsid is stopped and started then no need to do
1712                 * set param again since ddb state will be already
1713                 * active and FW does not allow set ddb to an
1714                 * active session.
1715                 */
1716                 if (mbx_sts)
1717                         if (ddb_entry->fw_ddb_device_state ==
1718                                                 DDB_DS_SESSION_ACTIVE) {
1719                                 ddb_entry->unblock_sess(ddb_entry->sess);
1720                                 goto exit_set_param;
1721                         }
1722
1723                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1724                            __func__, ddb_entry->fw_ddb_index);
1725                 goto exit_conn_start;
1726         }
1727
1728         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1729         if (status == QLA_ERROR) {
1730                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1731                            sess->targetname);
1732                 ret = -EINVAL;
1733                 goto exit_conn_start;
1734         }
1735
1736         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1737                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1738
1739         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1740                       ddb_entry->fw_ddb_device_state));
1741
1742 exit_set_param:
1743         ret = 0;
1744
1745 exit_conn_start:
1746         if (fw_ddb_entry)
1747                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1748                                   fw_ddb_entry, fw_ddb_entry_dma);
1749         return ret;
1750 }
1751
1752 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1753 {
1754         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1755         struct iscsi_session *sess;
1756         struct scsi_qla_host *ha;
1757         struct ddb_entry *ddb_entry;
1758         int options;
1759
1760         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1761         sess = cls_sess->dd_data;
1762         ddb_entry = sess->dd_data;
1763         ha = ddb_entry->ha;
1764
1765         options = LOGOUT_OPTION_CLOSE_SESSION;
1766         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1767                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1768 }
1769
1770 static void qla4xxx_task_work(struct work_struct *wdata)
1771 {
1772         struct ql4_task_data *task_data;
1773         struct scsi_qla_host *ha;
1774         struct passthru_status *sts;
1775         struct iscsi_task *task;
1776         struct iscsi_hdr *hdr;
1777         uint8_t *data;
1778         uint32_t data_len;
1779         struct iscsi_conn *conn;
1780         int hdr_len;
1781         itt_t itt;
1782
1783         task_data = container_of(wdata, struct ql4_task_data, task_work);
1784         ha = task_data->ha;
1785         task = task_data->task;
1786         sts = &task_data->sts;
1787         hdr_len = sizeof(struct iscsi_hdr);
1788
1789         DEBUG3(printk(KERN_INFO "Status returned\n"));
1790         DEBUG3(qla4xxx_dump_buffer(sts, 64));
1791         DEBUG3(printk(KERN_INFO "Response buffer"));
1792         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1793
1794         conn = task->conn;
1795
1796         switch (sts->completionStatus) {
1797         case PASSTHRU_STATUS_COMPLETE:
1798                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1799                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1800                 itt = sts->handle;
1801                 hdr->itt = itt;
1802                 data = task_data->resp_buffer + hdr_len;
1803                 data_len = task_data->resp_len - hdr_len;
1804                 iscsi_complete_pdu(conn, hdr, data, data_len);
1805                 break;
1806         default:
1807                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1808                            sts->completionStatus);
1809                 break;
1810         }
1811         return;
1812 }
1813
1814 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1815 {
1816         struct ql4_task_data *task_data;
1817         struct iscsi_session *sess;
1818         struct ddb_entry *ddb_entry;
1819         struct scsi_qla_host *ha;
1820         int hdr_len;
1821
1822         sess = task->conn->session;
1823         ddb_entry = sess->dd_data;
1824         ha = ddb_entry->ha;
1825         task_data = task->dd_data;
1826         memset(task_data, 0, sizeof(struct ql4_task_data));
1827
1828         if (task->sc) {
1829                 ql4_printk(KERN_INFO, ha,
1830                            "%s: SCSI Commands not implemented\n", __func__);
1831                 return -EINVAL;
1832         }
1833
1834         hdr_len = sizeof(struct iscsi_hdr);
1835         task_data->ha = ha;
1836         task_data->task = task;
1837
1838         if (task->data_count) {
1839                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1840                                                      task->data_count,
1841                                                      PCI_DMA_TODEVICE);
1842         }
1843
1844         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1845                       __func__, task->conn->max_recv_dlength, hdr_len));
1846
1847         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1848         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1849                                                     task_data->resp_len,
1850                                                     &task_data->resp_dma,
1851                                                     GFP_ATOMIC);
1852         if (!task_data->resp_buffer)
1853                 goto exit_alloc_pdu;
1854
1855         task_data->req_len = task->data_count + hdr_len;
1856         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1857                                                    task_data->req_len,
1858                                                    &task_data->req_dma,
1859                                                    GFP_ATOMIC);
1860         if (!task_data->req_buffer)
1861                 goto exit_alloc_pdu;
1862
1863         task->hdr = task_data->req_buffer;
1864
1865         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1866
1867         return 0;
1868
1869 exit_alloc_pdu:
1870         if (task_data->resp_buffer)
1871                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1872                                   task_data->resp_buffer, task_data->resp_dma);
1873
1874         if (task_data->req_buffer)
1875                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1876                                   task_data->req_buffer, task_data->req_dma);
1877         return -ENOMEM;
1878 }
1879
1880 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1881 {
1882         struct ql4_task_data *task_data;
1883         struct iscsi_session *sess;
1884         struct ddb_entry *ddb_entry;
1885         struct scsi_qla_host *ha;
1886         int hdr_len;
1887
1888         hdr_len = sizeof(struct iscsi_hdr);
1889         sess = task->conn->session;
1890         ddb_entry = sess->dd_data;
1891         ha = ddb_entry->ha;
1892         task_data = task->dd_data;
1893
1894         if (task->data_count) {
1895                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1896                                  task->data_count, PCI_DMA_TODEVICE);
1897         }
1898
1899         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1900                       __func__, task->conn->max_recv_dlength, hdr_len));
1901
1902         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1903                           task_data->resp_buffer, task_data->resp_dma);
1904         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1905                           task_data->req_buffer, task_data->req_dma);
1906         return;
1907 }
1908
1909 static int qla4xxx_task_xmit(struct iscsi_task *task)
1910 {
1911         struct scsi_cmnd *sc = task->sc;
1912         struct iscsi_session *sess = task->conn->session;
1913         struct ddb_entry *ddb_entry = sess->dd_data;
1914         struct scsi_qla_host *ha = ddb_entry->ha;
1915
1916         if (!sc)
1917                 return qla4xxx_send_passthru0(task);
1918
1919         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1920                    __func__);
1921         return -ENOSYS;
1922 }
1923
1924 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1925                                      struct dev_db_entry *fw_ddb_entry,
1926                                      struct iscsi_cls_session *cls_sess,
1927                                      struct iscsi_cls_conn *cls_conn)
1928 {
1929         int buflen = 0;
1930         struct iscsi_session *sess;
1931         struct ddb_entry *ddb_entry;
1932         struct iscsi_conn *conn;
1933         char ip_addr[DDB_IPADDR_LEN];
1934         uint16_t options = 0;
1935
1936         sess = cls_sess->dd_data;
1937         ddb_entry = sess->dd_data;
1938         conn = cls_conn->dd_data;
1939
1940         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
1941
1942         conn->max_recv_dlength = BYTE_UNITS *
1943                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1944
1945         conn->max_xmit_dlength = BYTE_UNITS *
1946                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1947
1948         sess->initial_r2t_en =
1949                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1950
1951         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1952
1953         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1954
1955         sess->first_burst = BYTE_UNITS *
1956                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1957
1958         sess->max_burst = BYTE_UNITS *
1959                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1960
1961         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1962
1963         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1964
1965         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1966
1967         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1968
1969         options = le16_to_cpu(fw_ddb_entry->options);
1970         if (options & DDB_OPT_IPV6_DEVICE)
1971                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1972         else
1973                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1974
1975         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1976                         (char *)fw_ddb_entry->iscsi_name, buflen);
1977         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1978                         (char *)ha->name_string, buflen);
1979         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1980                         (char *)ip_addr, buflen);
1981         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
1982                         (char *)fw_ddb_entry->iscsi_alias, buflen);
1983 }
1984
1985 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1986                                              struct ddb_entry *ddb_entry)
1987 {
1988         struct iscsi_cls_session *cls_sess;
1989         struct iscsi_cls_conn *cls_conn;
1990         uint32_t ddb_state;
1991         dma_addr_t fw_ddb_entry_dma;
1992         struct dev_db_entry *fw_ddb_entry;
1993
1994         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1995                                           &fw_ddb_entry_dma, GFP_KERNEL);
1996         if (!fw_ddb_entry) {
1997                 ql4_printk(KERN_ERR, ha,
1998                            "%s: Unable to allocate dma buffer\n", __func__);
1999                 goto exit_session_conn_fwddb_param;
2000         }
2001
2002         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2003                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2004                                     NULL, NULL, NULL) == QLA_ERROR) {
2005                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2006                                   "get_ddb_entry for fw_ddb_index %d\n",
2007                                   ha->host_no, __func__,
2008                                   ddb_entry->fw_ddb_index));
2009                 goto exit_session_conn_fwddb_param;
2010         }
2011
2012         cls_sess = ddb_entry->sess;
2013
2014         cls_conn = ddb_entry->conn;
2015
2016         /* Update params */
2017         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2018
2019 exit_session_conn_fwddb_param:
2020         if (fw_ddb_entry)
2021                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2022                                   fw_ddb_entry, fw_ddb_entry_dma);
2023 }
2024
2025 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2026                                        struct ddb_entry *ddb_entry)
2027 {
2028         struct iscsi_cls_session *cls_sess;
2029         struct iscsi_cls_conn *cls_conn;
2030         struct iscsi_session *sess;
2031         struct iscsi_conn *conn;
2032         uint32_t ddb_state;
2033         dma_addr_t fw_ddb_entry_dma;
2034         struct dev_db_entry *fw_ddb_entry;
2035
2036         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2037                                           &fw_ddb_entry_dma, GFP_KERNEL);
2038         if (!fw_ddb_entry) {
2039                 ql4_printk(KERN_ERR, ha,
2040                            "%s: Unable to allocate dma buffer\n", __func__);
2041                 goto exit_session_conn_param;
2042         }
2043
2044         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2045                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2046                                     NULL, NULL, NULL) == QLA_ERROR) {
2047                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2048                                   "get_ddb_entry for fw_ddb_index %d\n",
2049                                   ha->host_no, __func__,
2050                                   ddb_entry->fw_ddb_index));
2051                 goto exit_session_conn_param;
2052         }
2053
2054         cls_sess = ddb_entry->sess;
2055         sess = cls_sess->dd_data;
2056
2057         cls_conn = ddb_entry->conn;
2058         conn = cls_conn->dd_data;
2059
2060         /* Update timers after login */
2061         ddb_entry->default_relogin_timeout =
2062                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2063                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2064                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2065         ddb_entry->default_time2wait =
2066                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2067
2068         /* Update params */
2069         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2070         conn->max_recv_dlength = BYTE_UNITS *
2071                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2072
2073         conn->max_xmit_dlength = BYTE_UNITS *
2074                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2075
2076         sess->initial_r2t_en =
2077                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2078
2079         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2080
2081         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2082
2083         sess->first_burst = BYTE_UNITS *
2084                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2085
2086         sess->max_burst = BYTE_UNITS *
2087                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2088
2089         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2090
2091         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2092
2093         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2094
2095         memcpy(sess->initiatorname, ha->name_string,
2096                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2097
2098         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2099                         (char *)fw_ddb_entry->iscsi_alias, 0);
2100
2101 exit_session_conn_param:
2102         if (fw_ddb_entry)
2103                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2104                                   fw_ddb_entry, fw_ddb_entry_dma);
2105 }
2106
2107 /*
2108  * Timer routines
2109  */
2110
2111 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2112                                 unsigned long interval)
2113 {
2114         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2115                      __func__, ha->host->host_no));
2116         init_timer(&ha->timer);
2117         ha->timer.expires = jiffies + interval * HZ;
2118         ha->timer.data = (unsigned long)ha;
2119         ha->timer.function = (void (*)(unsigned long))func;
2120         add_timer(&ha->timer);
2121         ha->timer_active = 1;
2122 }
2123
2124 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2125 {
2126         del_timer_sync(&ha->timer);
2127         ha->timer_active = 0;
2128 }
2129
2130 /***
2131  * qla4xxx_mark_device_missing - blocks the session
2132  * @cls_session: Pointer to the session to be blocked
2133  * @ddb_entry: Pointer to device database entry
2134  *
2135  * This routine marks a device missing and close connection.
2136  **/
2137 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2138 {
2139         iscsi_block_session(cls_session);
2140 }
2141
2142 /**
2143  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2144  * @ha: Pointer to host adapter structure.
2145  *
2146  * This routine marks a device missing and resets the relogin retry count.
2147  **/
2148 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2149 {
2150         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2151 }
2152
2153 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2154                                        struct ddb_entry *ddb_entry,
2155                                        struct scsi_cmnd *cmd)
2156 {
2157         struct srb *srb;
2158
2159         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2160         if (!srb)
2161                 return srb;
2162
2163         kref_init(&srb->srb_ref);
2164         srb->ha = ha;
2165         srb->ddb = ddb_entry;
2166         srb->cmd = cmd;
2167         srb->flags = 0;
2168         CMD_SP(cmd) = (void *)srb;
2169
2170         return srb;
2171 }
2172
2173 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2174 {
2175         struct scsi_cmnd *cmd = srb->cmd;
2176
2177         if (srb->flags & SRB_DMA_VALID) {
2178                 scsi_dma_unmap(cmd);
2179                 srb->flags &= ~SRB_DMA_VALID;
2180         }
2181         CMD_SP(cmd) = NULL;
2182 }
2183
2184 void qla4xxx_srb_compl(struct kref *ref)
2185 {
2186         struct srb *srb = container_of(ref, struct srb, srb_ref);
2187         struct scsi_cmnd *cmd = srb->cmd;
2188         struct scsi_qla_host *ha = srb->ha;
2189
2190         qla4xxx_srb_free_dma(ha, srb);
2191
2192         mempool_free(srb, ha->srb_mempool);
2193
2194         cmd->scsi_done(cmd);
2195 }
2196
2197 /**
2198  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2199  * @host: scsi host
2200  * @cmd: Pointer to Linux's SCSI command structure
2201  *
2202  * Remarks:
2203  * This routine is invoked by Linux to send a SCSI command to the driver.
2204  * The mid-level driver tries to ensure that queuecommand never gets
2205  * invoked concurrently with itself or the interrupt handler (although
2206  * the interrupt handler may call this routine as part of request-
2207  * completion handling).   Unfortunely, it sometimes calls the scheduler
2208  * in interrupt context which is a big NO! NO!.
2209  **/
2210 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2211 {
2212         struct scsi_qla_host *ha = to_qla_host(host);
2213         struct ddb_entry *ddb_entry = cmd->device->hostdata;
2214         struct iscsi_cls_session *sess = ddb_entry->sess;
2215         struct srb *srb;
2216         int rval;
2217
2218         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2219                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2220                         cmd->result = DID_NO_CONNECT << 16;
2221                 else
2222                         cmd->result = DID_REQUEUE << 16;
2223                 goto qc_fail_command;
2224         }
2225
2226         if (!sess) {
2227                 cmd->result = DID_IMM_RETRY << 16;
2228                 goto qc_fail_command;
2229         }
2230
2231         rval = iscsi_session_chkready(sess);
2232         if (rval) {
2233                 cmd->result = rval;
2234                 goto qc_fail_command;
2235         }
2236
2237         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2238             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2239             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2240             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2241             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2242             !test_bit(AF_ONLINE, &ha->flags) ||
2243             !test_bit(AF_LINK_UP, &ha->flags) ||
2244             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2245                 goto qc_host_busy;
2246
2247         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2248         if (!srb)
2249                 goto qc_host_busy;
2250
2251         rval = qla4xxx_send_command_to_isp(ha, srb);
2252         if (rval != QLA_SUCCESS)
2253                 goto qc_host_busy_free_sp;
2254
2255         return 0;
2256
2257 qc_host_busy_free_sp:
2258         qla4xxx_srb_free_dma(ha, srb);
2259         mempool_free(srb, ha->srb_mempool);
2260
2261 qc_host_busy:
2262         return SCSI_MLQUEUE_HOST_BUSY;
2263
2264 qc_fail_command:
2265         cmd->scsi_done(cmd);
2266
2267         return 0;
2268 }
2269
2270 /**
2271  * qla4xxx_mem_free - frees memory allocated to adapter
2272  * @ha: Pointer to host adapter structure.
2273  *
2274  * Frees memory previously allocated by qla4xxx_mem_alloc
2275  **/
2276 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2277 {
2278         if (ha->queues)
2279                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2280                                   ha->queues_dma);
2281
2282          if (ha->fw_dump)
2283                 vfree(ha->fw_dump);
2284
2285         ha->queues_len = 0;
2286         ha->queues = NULL;
2287         ha->queues_dma = 0;
2288         ha->request_ring = NULL;
2289         ha->request_dma = 0;
2290         ha->response_ring = NULL;
2291         ha->response_dma = 0;
2292         ha->shadow_regs = NULL;
2293         ha->shadow_regs_dma = 0;
2294         ha->fw_dump = NULL;
2295         ha->fw_dump_size = 0;
2296
2297         /* Free srb pool. */
2298         if (ha->srb_mempool)
2299                 mempool_destroy(ha->srb_mempool);
2300
2301         ha->srb_mempool = NULL;
2302
2303         if (ha->chap_dma_pool)
2304                 dma_pool_destroy(ha->chap_dma_pool);
2305
2306         if (ha->chap_list)
2307                 vfree(ha->chap_list);
2308         ha->chap_list = NULL;
2309
2310         if (ha->fw_ddb_dma_pool)
2311                 dma_pool_destroy(ha->fw_ddb_dma_pool);
2312
2313         /* release io space registers  */
2314         if (is_qla8022(ha)) {
2315                 if (ha->nx_pcibase)
2316                         iounmap(
2317                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2318         } else if (ha->reg)
2319                 iounmap(ha->reg);
2320         pci_release_regions(ha->pdev);
2321 }
2322
2323 /**
2324  * qla4xxx_mem_alloc - allocates memory for use by adapter.
2325  * @ha: Pointer to host adapter structure
2326  *
2327  * Allocates DMA memory for request and response queues. Also allocates memory
2328  * for srbs.
2329  **/
2330 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2331 {
2332         unsigned long align;
2333
2334         /* Allocate contiguous block of DMA memory for queues. */
2335         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2336                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2337                           sizeof(struct shadow_regs) +
2338                           MEM_ALIGN_VALUE +
2339                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2340         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2341                                         &ha->queues_dma, GFP_KERNEL);
2342         if (ha->queues == NULL) {
2343                 ql4_printk(KERN_WARNING, ha,
2344                     "Memory Allocation failed - queues.\n");
2345
2346                 goto mem_alloc_error_exit;
2347         }
2348         memset(ha->queues, 0, ha->queues_len);
2349
2350         /*
2351          * As per RISC alignment requirements -- the bus-address must be a
2352          * multiple of the request-ring size (in bytes).
2353          */
2354         align = 0;
2355         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2356                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2357                                            (MEM_ALIGN_VALUE - 1));
2358
2359         /* Update request and response queue pointers. */
2360         ha->request_dma = ha->queues_dma + align;
2361         ha->request_ring = (struct queue_entry *) (ha->queues + align);
2362         ha->response_dma = ha->queues_dma + align +
2363                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2364         ha->response_ring = (struct queue_entry *) (ha->queues + align +
2365                                                     (REQUEST_QUEUE_DEPTH *
2366                                                      QUEUE_SIZE));
2367         ha->shadow_regs_dma = ha->queues_dma + align +
2368                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2369                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2370         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2371                                                   (REQUEST_QUEUE_DEPTH *
2372                                                    QUEUE_SIZE) +
2373                                                   (RESPONSE_QUEUE_DEPTH *
2374                                                    QUEUE_SIZE));
2375
2376         /* Allocate memory for srb pool. */
2377         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2378                                          mempool_free_slab, srb_cachep);
2379         if (ha->srb_mempool == NULL) {
2380                 ql4_printk(KERN_WARNING, ha,
2381                     "Memory Allocation failed - SRB Pool.\n");
2382
2383                 goto mem_alloc_error_exit;
2384         }
2385
2386         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2387                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
2388
2389         if (ha->chap_dma_pool == NULL) {
2390                 ql4_printk(KERN_WARNING, ha,
2391                     "%s: chap_dma_pool allocation failed..\n", __func__);
2392                 goto mem_alloc_error_exit;
2393         }
2394
2395         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2396                                               DDB_DMA_BLOCK_SIZE, 8, 0);
2397
2398         if (ha->fw_ddb_dma_pool == NULL) {
2399                 ql4_printk(KERN_WARNING, ha,
2400                            "%s: fw_ddb_dma_pool allocation failed..\n",
2401                            __func__);
2402                 goto mem_alloc_error_exit;
2403         }
2404
2405         return QLA_SUCCESS;
2406
2407 mem_alloc_error_exit:
2408         qla4xxx_mem_free(ha);
2409         return QLA_ERROR;
2410 }
2411
2412 /**
2413  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2414  * @ha: adapter block pointer.
2415  *
2416  * Note: The caller should not hold the idc lock.
2417  **/
2418 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2419 {
2420         uint32_t temp, temp_state, temp_val;
2421         int status = QLA_SUCCESS;
2422
2423         temp = qla4_8xxx_rd_32(ha, CRB_TEMP_STATE);
2424
2425         temp_state = qla82xx_get_temp_state(temp);
2426         temp_val = qla82xx_get_temp_val(temp);
2427
2428         if (temp_state == QLA82XX_TEMP_PANIC) {
2429                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2430                            " exceeds maximum allowed. Hardware has been shut"
2431                            " down.\n", temp_val);
2432                 status = QLA_ERROR;
2433         } else if (temp_state == QLA82XX_TEMP_WARN) {
2434                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2435                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2436                                    " degrees C exceeds operating range."
2437                                    " Immediate action needed.\n", temp_val);
2438         } else {
2439                 if (ha->temperature == QLA82XX_TEMP_WARN)
2440                         ql4_printk(KERN_INFO, ha, "Device temperature is"
2441                                    " now %d degrees C in normal range.\n",
2442                                    temp_val);
2443         }
2444         ha->temperature = temp_state;
2445         return status;
2446 }
2447
2448 /**
2449  * qla4_8xxx_check_fw_alive  - Check firmware health
2450  * @ha: Pointer to host adapter structure.
2451  *
2452  * Context: Interrupt
2453  **/
2454 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2455 {
2456         uint32_t fw_heartbeat_counter;
2457         int status = QLA_SUCCESS;
2458
2459         fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
2460         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2461         if (fw_heartbeat_counter == 0xffffffff) {
2462                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2463                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2464                     ha->host_no, __func__));
2465                 return status;
2466         }
2467
2468         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2469                 ha->seconds_since_last_heartbeat++;
2470                 /* FW not alive after 2 seconds */
2471                 if (ha->seconds_since_last_heartbeat == 2) {
2472                         ha->seconds_since_last_heartbeat = 0;
2473
2474                         ql4_printk(KERN_INFO, ha,
2475                                    "scsi(%ld): %s, Dumping hw/fw registers:\n "
2476                                    " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
2477                                    " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
2478                                    " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
2479                                    " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
2480                                    ha->host_no, __func__,
2481                                    qla4_8xxx_rd_32(ha,
2482                                                    QLA82XX_PEG_HALT_STATUS1),
2483                                    qla4_8xxx_rd_32(ha,
2484                                                    QLA82XX_PEG_HALT_STATUS2),
2485                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
2486                                                    0x3c),
2487                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
2488                                                    0x3c),
2489                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
2490                                                    0x3c),
2491                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
2492                                                    0x3c),
2493                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
2494                                                    0x3c));
2495                         status = QLA_ERROR;
2496                 }
2497         } else
2498                 ha->seconds_since_last_heartbeat = 0;
2499
2500         ha->fw_heartbeat_counter = fw_heartbeat_counter;
2501         return status;
2502 }
2503
2504 /**
2505  * qla4_8xxx_watchdog - Poll dev state
2506  * @ha: Pointer to host adapter structure.
2507  *
2508  * Context: Interrupt
2509  **/
2510 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2511 {
2512         uint32_t dev_state, halt_status;
2513
2514         /* don't poll if reset is going on */
2515         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2516             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2517             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2518                 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
2519
2520                 if (qla4_8xxx_check_temp(ha)) {
2521                         ql4_printk(KERN_INFO, ha, "disabling pause"
2522                                    " transmit on port 0 & 1.\n");
2523                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2524                                         CRB_NIU_XG_PAUSE_CTL_P0 |
2525                                         CRB_NIU_XG_PAUSE_CTL_P1);
2526                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2527                         qla4xxx_wake_dpc(ha);
2528                 } else if (dev_state == QLA82XX_DEV_NEED_RESET &&
2529                     !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2530                         if (!ql4xdontresethba) {
2531                                 ql4_printk(KERN_INFO, ha, "%s: HW State: "
2532                                     "NEED RESET!\n", __func__);
2533                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2534                                 qla4xxx_wake_dpc(ha);
2535                         }
2536                 } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
2537                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2538                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2539                             __func__);
2540                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2541                         qla4xxx_wake_dpc(ha);
2542                 } else  {
2543                         /* Check firmware health */
2544                         if (qla4_8xxx_check_fw_alive(ha)) {
2545                                 ql4_printk(KERN_INFO, ha, "disabling pause"
2546                                            " transmit on port 0 & 1.\n");
2547                                 qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2548                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2549                                                 CRB_NIU_XG_PAUSE_CTL_P1);
2550                                 halt_status = qla4_8xxx_rd_32(ha,
2551                                                 QLA82XX_PEG_HALT_STATUS1);
2552
2553                                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2554                                         ql4_printk(KERN_ERR, ha, "%s:"
2555                                                    " Firmware aborted with"
2556                                                    " error code 0x00006700."
2557                                                    " Device is being reset\n",
2558                                                    __func__);
2559
2560                                 /* Since we cannot change dev_state in interrupt
2561                                  * context, set appropriate DPC flag then wakeup
2562                                  * DPC */
2563                                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2564                                         set_bit(DPC_HA_UNRECOVERABLE,
2565                                                 &ha->dpc_flags);
2566                                 else {
2567                                         ql4_printk(KERN_INFO, ha, "%s: detect "
2568                                                    "abort needed!\n", __func__);
2569                                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
2570                                 }
2571                                 qla4xxx_mailbox_premature_completion(ha);
2572                                 qla4xxx_wake_dpc(ha);
2573                         }
2574                 }
2575         }
2576 }
2577
2578 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2579 {
2580         struct iscsi_session *sess;
2581         struct ddb_entry *ddb_entry;
2582         struct scsi_qla_host *ha;
2583
2584         sess = cls_sess->dd_data;
2585         ddb_entry = sess->dd_data;
2586         ha = ddb_entry->ha;
2587
2588         if (!(ddb_entry->ddb_type == FLASH_DDB))
2589                 return;
2590
2591         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2592             !iscsi_is_session_online(cls_sess)) {
2593                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2594                     INVALID_ENTRY) {
2595                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2596                                         0) {
2597                                 atomic_set(&ddb_entry->retry_relogin_timer,
2598                                            INVALID_ENTRY);
2599                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2600                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
2601                                 DEBUG2(ql4_printk(KERN_INFO, ha,
2602                                        "%s: index [%d] login device\n",
2603                                         __func__, ddb_entry->fw_ddb_index));
2604                         } else
2605                                 atomic_dec(&ddb_entry->retry_relogin_timer);
2606                 }
2607         }
2608
2609         /* Wait for relogin to timeout */
2610         if (atomic_read(&ddb_entry->relogin_timer) &&
2611             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2612                 /*
2613                  * If the relogin times out and the device is
2614                  * still NOT ONLINE then try and relogin again.
2615                  */
2616                 if (!iscsi_is_session_online(cls_sess)) {
2617                         /* Reset retry relogin timer */
2618                         atomic_inc(&ddb_entry->relogin_retry_count);
2619                         DEBUG2(ql4_printk(KERN_INFO, ha,
2620                                 "%s: index[%d] relogin timed out-retrying"
2621                                 " relogin (%d), retry (%d)\n", __func__,
2622                                 ddb_entry->fw_ddb_index,
2623                                 atomic_read(&ddb_entry->relogin_retry_count),
2624                                 ddb_entry->default_time2wait + 4));
2625                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2626                         atomic_set(&ddb_entry->retry_relogin_timer,
2627                                    ddb_entry->default_time2wait + 4);
2628                 }
2629         }
2630 }
2631
2632 /**
2633  * qla4xxx_timer - checks every second for work to do.
2634  * @ha: Pointer to host adapter structure.
2635  **/
2636 static void qla4xxx_timer(struct scsi_qla_host *ha)
2637 {
2638         int start_dpc = 0;
2639         uint16_t w;
2640
2641         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2642
2643         /* If we are in the middle of AER/EEH processing
2644          * skip any processing and reschedule the timer
2645          */
2646         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2647                 mod_timer(&ha->timer, jiffies + HZ);
2648                 return;
2649         }
2650
2651         /* Hardware read to trigger an EEH error during mailbox waits. */
2652         if (!pci_channel_offline(ha->pdev))
2653                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
2654
2655         if (is_qla8022(ha)) {
2656                 qla4_8xxx_watchdog(ha);
2657         }
2658
2659         if (!is_qla8022(ha)) {
2660                 /* Check for heartbeat interval. */
2661                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2662                     ha->heartbeat_interval != 0) {
2663                         ha->seconds_since_last_heartbeat++;
2664                         if (ha->seconds_since_last_heartbeat >
2665                             ha->heartbeat_interval + 2)
2666                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2667                 }
2668         }
2669
2670         /* Process any deferred work. */
2671         if (!list_empty(&ha->work_list))
2672                 start_dpc++;
2673
2674         /* Wakeup the dpc routine for this adapter, if needed. */
2675         if (start_dpc ||
2676              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2677              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2678              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
2679              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2680              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2681              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
2682              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
2683              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2684              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2685              test_bit(DPC_AEN, &ha->dpc_flags)) {
2686                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2687                               " - dpc flags = 0x%lx\n",
2688                               ha->host_no, __func__, ha->dpc_flags));
2689                 qla4xxx_wake_dpc(ha);
2690         }
2691
2692         /* Reschedule timer thread to call us back in one second */
2693         mod_timer(&ha->timer, jiffies + HZ);
2694
2695         DEBUG2(ha->seconds_since_last_intr++);
2696 }
2697
2698 /**
2699  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
2700  * @ha: Pointer to host adapter structure.
2701  *
2702  * This routine stalls the driver until all outstanding commands are returned.
2703  * Caller must release the Hardware Lock prior to calling this routine.
2704  **/
2705 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2706 {
2707         uint32_t index = 0;
2708         unsigned long flags;
2709         struct scsi_cmnd *cmd;
2710
2711         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2712
2713         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2714             "complete\n", WAIT_CMD_TOV));
2715
2716         while (!time_after_eq(jiffies, wtime)) {
2717                 spin_lock_irqsave(&ha->hardware_lock, flags);
2718                 /* Find a command that hasn't completed. */
2719                 for (index = 0; index < ha->host->can_queue; index++) {
2720                         cmd = scsi_host_find_tag(ha->host, index);
2721                         /*
2722                          * We cannot just check if the index is valid,
2723                          * becase if we are run from the scsi eh, then
2724                          * the scsi/block layer is going to prevent
2725                          * the tag from being released.
2726                          */
2727                         if (cmd != NULL && CMD_SP(cmd))
2728                                 break;
2729                 }
2730                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2731
2732                 /* If No Commands are pending, wait is complete */
2733                 if (index == ha->host->can_queue)
2734                         return QLA_SUCCESS;
2735
2736                 msleep(1000);
2737         }
2738         /* If we timed out on waiting for commands to come back
2739          * return ERROR. */
2740         return QLA_ERROR;
2741 }
2742
2743 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
2744 {
2745         uint32_t ctrl_status;
2746         unsigned long flags = 0;
2747
2748         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
2749
2750         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2751                 return QLA_ERROR;
2752
2753         spin_lock_irqsave(&ha->hardware_lock, flags);
2754
2755         /*
2756          * If the SCSI Reset Interrupt bit is set, clear it.
2757          * Otherwise, the Soft Reset won't work.
2758          */
2759         ctrl_status = readw(&ha->reg->ctrl_status);
2760         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2761                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2762
2763         /* Issue Soft Reset */
2764         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2765         readl(&ha->reg->ctrl_status);
2766
2767         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2768         return QLA_SUCCESS;
2769 }
2770
2771 /**
2772  * qla4xxx_soft_reset - performs soft reset.
2773  * @ha: Pointer to host adapter structure.
2774  **/
2775 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2776 {
2777         uint32_t max_wait_time;
2778         unsigned long flags = 0;
2779         int status;
2780         uint32_t ctrl_status;
2781
2782         status = qla4xxx_hw_reset(ha);
2783         if (status != QLA_SUCCESS)
2784                 return status;
2785
2786         status = QLA_ERROR;
2787         /* Wait until the Network Reset Intr bit is cleared */
2788         max_wait_time = RESET_INTR_TOV;
2789         do {
2790                 spin_lock_irqsave(&ha->hardware_lock, flags);
2791                 ctrl_status = readw(&ha->reg->ctrl_status);
2792                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2793
2794                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2795                         break;
2796
2797                 msleep(1000);
2798         } while ((--max_wait_time));
2799
2800         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2801                 DEBUG2(printk(KERN_WARNING
2802                               "scsi%ld: Network Reset Intr not cleared by "
2803                               "Network function, clearing it now!\n",
2804                               ha->host_no));
2805                 spin_lock_irqsave(&ha->hardware_lock, flags);
2806                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2807                 readl(&ha->reg->ctrl_status);
2808                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2809         }
2810
2811         /* Wait until the firmware tells us the Soft Reset is done */
2812         max_wait_time = SOFT_RESET_TOV;
2813         do {
2814                 spin_lock_irqsave(&ha->hardware_lock, flags);
2815                 ctrl_status = readw(&ha->reg->ctrl_status);
2816                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2817
2818                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2819                         status = QLA_SUCCESS;
2820                         break;
2821                 }
2822
2823                 msleep(1000);
2824         } while ((--max_wait_time));
2825
2826         /*
2827          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2828          * after the soft reset has taken place.
2829          */
2830         spin_lock_irqsave(&ha->hardware_lock, flags);
2831         ctrl_status = readw(&ha->reg->ctrl_status);
2832         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2833                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2834                 readl(&ha->reg->ctrl_status);
2835         }
2836         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2837
2838         /* If soft reset fails then most probably the bios on other
2839          * function is also enabled.
2840          * Since the initialization is sequential the other fn
2841          * wont be able to acknowledge the soft reset.
2842          * Issue a force soft reset to workaround this scenario.
2843          */
2844         if (max_wait_time == 0) {
2845                 /* Issue Force Soft Reset */
2846                 spin_lock_irqsave(&ha->hardware_lock, flags);
2847                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2848                 readl(&ha->reg->ctrl_status);
2849                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2850                 /* Wait until the firmware tells us the Soft Reset is done */
2851                 max_wait_time = SOFT_RESET_TOV;
2852                 do {
2853                         spin_lock_irqsave(&ha->hardware_lock, flags);
2854                         ctrl_status = readw(&ha->reg->ctrl_status);
2855                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2856
2857                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2858                                 status = QLA_SUCCESS;
2859                                 break;
2860                         }
2861
2862                         msleep(1000);
2863                 } while ((--max_wait_time));
2864         }
2865
2866         return status;
2867 }
2868
2869 /**
2870  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
2871  * @ha: Pointer to host adapter structure.
2872  * @res: returned scsi status
2873  *
2874  * This routine is called just prior to a HARD RESET to return all
2875  * outstanding commands back to the Operating System.
2876  * Caller should make sure that the following locks are released
2877  * before this calling routine: Hardware lock, and io_request_lock.
2878  **/
2879 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
2880 {
2881         struct srb *srb;
2882         int i;
2883         unsigned long flags;
2884
2885         spin_lock_irqsave(&ha->hardware_lock, flags);
2886         for (i = 0; i < ha->host->can_queue; i++) {
2887                 srb = qla4xxx_del_from_active_array(ha, i);
2888                 if (srb != NULL) {
2889                         srb->cmd->result = res;
2890                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2891                 }
2892         }
2893         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2894 }
2895
2896 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2897 {
2898         clear_bit(AF_ONLINE, &ha->flags);
2899
2900         /* Disable the board */
2901         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
2902
2903         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2904         qla4xxx_mark_all_devices_missing(ha);
2905         clear_bit(AF_INIT_DONE, &ha->flags);
2906 }
2907
2908 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2909 {
2910         struct iscsi_session *sess;
2911         struct ddb_entry *ddb_entry;
2912
2913         sess = cls_session->dd_data;
2914         ddb_entry = sess->dd_data;
2915         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
2916
2917         if (ddb_entry->ddb_type == FLASH_DDB)
2918                 iscsi_block_session(ddb_entry->sess);
2919         else
2920                 iscsi_session_failure(cls_session->dd_data,
2921                                       ISCSI_ERR_CONN_FAILED);
2922 }
2923
2924 /**
2925  * qla4xxx_recover_adapter - recovers adapter after a fatal error
2926  * @ha: Pointer to host adapter structure.
2927  **/
2928 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
2929 {
2930         int status = QLA_ERROR;
2931         uint8_t reset_chip = 0;
2932         uint32_t dev_state;
2933         unsigned long wait;
2934
2935         /* Stall incoming I/O until we are done */
2936         scsi_block_requests(ha->host);
2937         clear_bit(AF_ONLINE, &ha->flags);
2938         clear_bit(AF_LINK_UP, &ha->flags);
2939
2940         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
2941
2942         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2943
2944         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2945
2946         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2947                 reset_chip = 1;
2948
2949         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2950          * do not reset adapter, jump to initialize_adapter */
2951         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2952                 status = QLA_SUCCESS;
2953                 goto recover_ha_init_adapter;
2954         }
2955
2956         /* For the ISP-82xx adapter, issue a stop_firmware if invoked
2957          * from eh_host_reset or ioctl module */
2958         if (is_qla8022(ha) && !reset_chip &&
2959             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2960
2961                 DEBUG2(ql4_printk(KERN_INFO, ha,
2962                     "scsi%ld: %s - Performing stop_firmware...\n",
2963                     ha->host_no, __func__));
2964                 status = ha->isp_ops->reset_firmware(ha);
2965                 if (status == QLA_SUCCESS) {
2966                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2967                                 qla4xxx_cmd_wait(ha);
2968                         ha->isp_ops->disable_intrs(ha);
2969                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2970                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2971                 } else {
2972                         /* If the stop_firmware fails then
2973                          * reset the entire chip */
2974                         reset_chip = 1;
2975                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2976                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
2977                 }
2978         }
2979
2980         /* Issue full chip reset if recovering from a catastrophic error,
2981          * or if stop_firmware fails for ISP-82xx.
2982          * This is the default case for ISP-4xxx */
2983         if (!is_qla8022(ha) || reset_chip) {
2984                 if (!is_qla8022(ha))
2985                         goto chip_reset;
2986
2987                 /* Check if 82XX firmware is alive or not
2988                  * We may have arrived here from NEED_RESET
2989                  * detection only */
2990                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
2991                         goto chip_reset;
2992
2993                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
2994                 while (time_before(jiffies, wait)) {
2995                         if (qla4_8xxx_check_fw_alive(ha)) {
2996                                 qla4xxx_mailbox_premature_completion(ha);
2997                                 break;
2998                         }
2999
3000                         set_current_state(TASK_UNINTERRUPTIBLE);
3001                         schedule_timeout(HZ);
3002                 }
3003
3004                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3005                         qla4xxx_cmd_wait(ha);
3006 chip_reset:
3007                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3008                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3009                 DEBUG2(ql4_printk(KERN_INFO, ha,
3010                     "scsi%ld: %s - Performing chip reset..\n",
3011                     ha->host_no, __func__));
3012                 status = ha->isp_ops->reset_chip(ha);
3013         }
3014
3015         /* Flush any pending ddb changed AENs */
3016         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3017
3018 recover_ha_init_adapter:
3019         /* Upon successful firmware/chip reset, re-initialize the adapter */
3020         if (status == QLA_SUCCESS) {
3021                 /* For ISP-4xxx, force function 1 to always initialize
3022                  * before function 3 to prevent both funcions from
3023                  * stepping on top of the other */
3024                 if (!is_qla8022(ha) && (ha->mac_index == 3))
3025                         ssleep(6);
3026
3027                 /* NOTE: AF_ONLINE flag set upon successful completion of
3028                  *       qla4xxx_initialize_adapter */
3029                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3030         }
3031
3032         /* Retry failed adapter initialization, if necessary
3033          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3034          * case to prevent ping-pong resets between functions */
3035         if (!test_bit(AF_ONLINE, &ha->flags) &&
3036             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3037                 /* Adapter initialization failed, see if we can retry
3038                  * resetting the ha.
3039                  * Since we don't want to block the DPC for too long
3040                  * with multiple resets in the same thread,
3041                  * utilize DPC to retry */
3042                 if (is_qla8022(ha)) {
3043                         qla4_8xxx_idc_lock(ha);
3044                         dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
3045                         qla4_8xxx_idc_unlock(ha);
3046                         if (dev_state == QLA82XX_DEV_FAILED) {
3047                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3048                                            "recover adapter. H/W is in Failed "
3049                                            "state\n", __func__);
3050                                 qla4xxx_dead_adapter_cleanup(ha);
3051                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3052                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3053                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3054                                                 &ha->dpc_flags);
3055                                 status = QLA_ERROR;
3056
3057                                 goto exit_recover;
3058                         }
3059                 }
3060
3061                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3062                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3063                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3064                                       "(%d) more times\n", ha->host_no,
3065                                       ha->retry_reset_ha_cnt));
3066                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3067                         status = QLA_ERROR;
3068                 } else {
3069                         if (ha->retry_reset_ha_cnt > 0) {
3070                                 /* Schedule another Reset HA--DPC will retry */
3071                                 ha->retry_reset_ha_cnt--;
3072                                 DEBUG2(printk("scsi%ld: recover adapter - "
3073                                               "retry remaining %d\n",
3074                                               ha->host_no,
3075                                               ha->retry_reset_ha_cnt));
3076                                 status = QLA_ERROR;
3077                         }
3078
3079                         if (ha->retry_reset_ha_cnt == 0) {
3080                                 /* Recover adapter retries have been exhausted.
3081                                  * Adapter DEAD */
3082                                 DEBUG2(printk("scsi%ld: recover adapter "
3083                                               "failed - board disabled\n",
3084                                               ha->host_no));
3085                                 qla4xxx_dead_adapter_cleanup(ha);
3086                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3087                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3088                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3089                                           &ha->dpc_flags);
3090                                 status = QLA_ERROR;
3091                         }
3092                 }
3093         } else {
3094                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3095                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3096                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3097         }
3098
3099 exit_recover:
3100         ha->adapter_error_count++;
3101
3102         if (test_bit(AF_ONLINE, &ha->flags))
3103                 ha->isp_ops->enable_intrs(ha);
3104
3105         scsi_unblock_requests(ha->host);
3106
3107         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3108         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3109             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3110
3111         return status;
3112 }
3113
3114 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3115 {
3116         struct iscsi_session *sess;
3117         struct ddb_entry *ddb_entry;
3118         struct scsi_qla_host *ha;
3119
3120         sess = cls_session->dd_data;
3121         ddb_entry = sess->dd_data;
3122         ha = ddb_entry->ha;
3123         if (!iscsi_is_session_online(cls_session)) {
3124                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3125                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3126                                    " unblock session\n", ha->host_no, __func__,
3127                                    ddb_entry->fw_ddb_index);
3128                         iscsi_unblock_session(ddb_entry->sess);
3129                 } else {
3130                         /* Trigger relogin */
3131                         if (ddb_entry->ddb_type == FLASH_DDB) {
3132                                 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3133                                         qla4xxx_arm_relogin_timer(ddb_entry);
3134                         } else
3135                                 iscsi_session_failure(cls_session->dd_data,
3136                                                       ISCSI_ERR_CONN_FAILED);
3137                 }
3138         }
3139 }
3140
3141 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3142 {
3143         struct iscsi_session *sess;
3144         struct ddb_entry *ddb_entry;
3145         struct scsi_qla_host *ha;
3146
3147         sess = cls_session->dd_data;
3148         ddb_entry = sess->dd_data;
3149         ha = ddb_entry->ha;
3150         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3151                    " unblock session\n", ha->host_no, __func__,
3152                    ddb_entry->fw_ddb_index);
3153
3154         iscsi_unblock_session(ddb_entry->sess);
3155
3156         /* Start scan target */
3157         if (test_bit(AF_ONLINE, &ha->flags)) {
3158                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3159                            " start scan\n", ha->host_no, __func__,
3160                            ddb_entry->fw_ddb_index);
3161                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3162         }
3163         return QLA_SUCCESS;
3164 }
3165
3166 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3167 {
3168         struct iscsi_session *sess;
3169         struct ddb_entry *ddb_entry;
3170         struct scsi_qla_host *ha;
3171
3172         sess = cls_session->dd_data;
3173         ddb_entry = sess->dd_data;
3174         ha = ddb_entry->ha;
3175         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3176                    " unblock user space session\n", ha->host_no, __func__,
3177                    ddb_entry->fw_ddb_index);
3178         iscsi_conn_start(ddb_entry->conn);
3179         iscsi_conn_login_event(ddb_entry->conn,
3180                                ISCSI_CONN_STATE_LOGGED_IN);
3181
3182         return QLA_SUCCESS;
3183 }
3184
3185 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3186 {
3187         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3188 }
3189
3190 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3191 {
3192         uint16_t relogin_timer;
3193         struct iscsi_session *sess;
3194         struct ddb_entry *ddb_entry;
3195         struct scsi_qla_host *ha;
3196
3197         sess = cls_sess->dd_data;
3198         ddb_entry = sess->dd_data;
3199         ha = ddb_entry->ha;
3200
3201         relogin_timer = max(ddb_entry->default_relogin_timeout,
3202                             (uint16_t)RELOGIN_TOV);
3203         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3204
3205         DEBUG2(ql4_printk(KERN_INFO, ha,
3206                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3207                           ddb_entry->fw_ddb_index, relogin_timer));
3208
3209         qla4xxx_login_flash_ddb(cls_sess);
3210 }
3211
3212 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3213 {
3214         struct iscsi_session *sess;
3215         struct ddb_entry *ddb_entry;
3216         struct scsi_qla_host *ha;
3217
3218         sess = cls_sess->dd_data;
3219         ddb_entry = sess->dd_data;
3220         ha = ddb_entry->ha;
3221
3222         if (!(ddb_entry->ddb_type == FLASH_DDB))
3223                 return;
3224
3225         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3226             !iscsi_is_session_online(cls_sess)) {
3227                 DEBUG2(ql4_printk(KERN_INFO, ha,
3228                                   "relogin issued\n"));
3229                 qla4xxx_relogin_flash_ddb(cls_sess);
3230         }
3231 }
3232
3233 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3234 {
3235         if (ha->dpc_thread)
3236                 queue_work(ha->dpc_thread, &ha->dpc_work);
3237 }
3238
3239 static struct qla4_work_evt *
3240 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3241                    enum qla4_work_type type)
3242 {
3243         struct qla4_work_evt *e;
3244         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3245
3246         e = kzalloc(size, GFP_ATOMIC);
3247         if (!e)
3248                 return NULL;
3249
3250         INIT_LIST_HEAD(&e->list);
3251         e->type = type;
3252         return e;
3253 }
3254
3255 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3256                              struct qla4_work_evt *e)
3257 {
3258         unsigned long flags;
3259
3260         spin_lock_irqsave(&ha->work_lock, flags);
3261         list_add_tail(&e->list, &ha->work_list);
3262         spin_unlock_irqrestore(&ha->work_lock, flags);
3263         qla4xxx_wake_dpc(ha);
3264 }
3265
3266 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3267                           enum iscsi_host_event_code aen_code,
3268                           uint32_t data_size, uint8_t *data)
3269 {
3270         struct qla4_work_evt *e;
3271
3272         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3273         if (!e)
3274                 return QLA_ERROR;
3275
3276         e->u.aen.code = aen_code;
3277         e->u.aen.data_size = data_size;
3278         memcpy(e->u.aen.data, data, data_size);
3279
3280         qla4xxx_post_work(ha, e);
3281
3282         return QLA_SUCCESS;
3283 }
3284
3285 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3286                                uint32_t status, uint32_t pid,
3287                                uint32_t data_size, uint8_t *data)
3288 {
3289         struct qla4_work_evt *e;
3290
3291         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3292         if (!e)
3293                 return QLA_ERROR;
3294
3295         e->u.ping.status = status;
3296         e->u.ping.pid = pid;
3297         e->u.ping.data_size = data_size;
3298         memcpy(e->u.ping.data, data, data_size);
3299
3300         qla4xxx_post_work(ha, e);
3301
3302         return QLA_SUCCESS;
3303 }
3304
3305 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3306 {
3307         struct qla4_work_evt *e, *tmp;
3308         unsigned long flags;
3309         LIST_HEAD(work);
3310
3311         spin_lock_irqsave(&ha->work_lock, flags);
3312         list_splice_init(&ha->work_list, &work);
3313         spin_unlock_irqrestore(&ha->work_lock, flags);
3314
3315         list_for_each_entry_safe(e, tmp, &work, list) {
3316                 list_del_init(&e->list);
3317
3318                 switch (e->type) {
3319                 case QLA4_EVENT_AEN:
3320                         iscsi_post_host_event(ha->host_no,
3321                                               &qla4xxx_iscsi_transport,
3322                                               e->u.aen.code,
3323                                               e->u.aen.data_size,
3324                                               e->u.aen.data);
3325                         break;
3326                 case QLA4_EVENT_PING_STATUS:
3327                         iscsi_ping_comp_event(ha->host_no,
3328                                               &qla4xxx_iscsi_transport,
3329                                               e->u.ping.status,
3330                                               e->u.ping.pid,
3331                                               e->u.ping.data_size,
3332                                               e->u.ping.data);
3333                         break;
3334                 default:
3335                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3336                                    "supported", e->type);
3337                 }
3338                 kfree(e);
3339         }
3340 }
3341
3342 /**
3343  * qla4xxx_do_dpc - dpc routine
3344  * @data: in our case pointer to adapter structure
3345  *
3346  * This routine is a task that is schedule by the interrupt handler
3347  * to perform the background processing for interrupts.  We put it
3348  * on a task queue that is consumed whenever the scheduler runs; that's
3349  * so you can do anything (i.e. put the process to sleep etc).  In fact,
3350  * the mid-level tries to sleep when it reaches the driver threshold
3351  * "host->can_queue". This can cause a panic if we were in our interrupt code.
3352  **/
3353 static void qla4xxx_do_dpc(struct work_struct *work)
3354 {
3355         struct scsi_qla_host *ha =
3356                 container_of(work, struct scsi_qla_host, dpc_work);
3357         int status = QLA_ERROR;
3358
3359         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3360             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3361             ha->host_no, __func__, ha->flags, ha->dpc_flags))
3362
3363         /* Initialization not yet finished. Don't do anything yet. */
3364         if (!test_bit(AF_INIT_DONE, &ha->flags))
3365                 return;
3366
3367         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3368                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3369                     ha->host_no, __func__, ha->flags));
3370                 return;
3371         }
3372
3373         /* post events to application */
3374         qla4xxx_do_work(ha);
3375
3376         if (is_qla8022(ha)) {
3377                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3378                         qla4_8xxx_idc_lock(ha);
3379                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
3380                             QLA82XX_DEV_FAILED);
3381                         qla4_8xxx_idc_unlock(ha);
3382                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3383                         qla4_8xxx_device_state_handler(ha);
3384                 }
3385                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3386                         qla4_8xxx_need_qsnt_handler(ha);
3387                 }
3388         }
3389
3390         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3391             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3392             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3393             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3394                 if (ql4xdontresethba) {
3395                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3396                             ha->host_no, __func__));
3397                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3398                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3399                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3400                         goto dpc_post_reset_ha;
3401                 }
3402                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3403                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
3404                         qla4xxx_recover_adapter(ha);
3405
3406                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3407                         uint8_t wait_time = RESET_INTR_TOV;
3408
3409                         while ((readw(&ha->reg->ctrl_status) &
3410                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3411                                 if (--wait_time == 0)
3412                                         break;
3413                                 msleep(1000);
3414                         }
3415                         if (wait_time == 0)
3416                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3417                                               "bit not cleared-- resetting\n",
3418                                               ha->host_no, __func__));
3419                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3420                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3421                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3422                                 status = qla4xxx_recover_adapter(ha);
3423                         }
3424                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3425                         if (status == QLA_SUCCESS)
3426                                 ha->isp_ops->enable_intrs(ha);
3427                 }
3428         }
3429
3430 dpc_post_reset_ha:
3431         /* ---- process AEN? --- */
3432         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3433                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3434
3435         /* ---- Get DHCP IP Address? --- */
3436         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3437                 qla4xxx_get_dhcp_ip_address(ha);
3438
3439         /* ---- relogin device? --- */
3440         if (adapter_up(ha) &&
3441             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3442                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3443         }
3444
3445         /* ---- link change? --- */
3446         if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3447                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3448                         /* ---- link down? --- */
3449                         qla4xxx_mark_all_devices_missing(ha);
3450                 } else {
3451                         /* ---- link up? --- *
3452                          * F/W will auto login to all devices ONLY ONCE after
3453                          * link up during driver initialization and runtime
3454                          * fatal error recovery.  Therefore, the driver must
3455                          * manually relogin to devices when recovering from
3456                          * connection failures, logouts, expired KATO, etc. */
3457                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3458                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
3459                                 iscsi_host_for_each_session(ha->host,
3460                                                 qla4xxx_login_flash_ddb);
3461                         } else
3462                                 qla4xxx_relogin_all_devices(ha);
3463                 }
3464         }
3465 }
3466
3467 /**
3468  * qla4xxx_free_adapter - release the adapter
3469  * @ha: pointer to adapter structure
3470  **/
3471 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3472 {
3473         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3474
3475         if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
3476                 /* Turn-off interrupts on the card. */
3477                 ha->isp_ops->disable_intrs(ha);
3478         }
3479
3480         /* Remove timer thread, if present */
3481         if (ha->timer_active)
3482                 qla4xxx_stop_timer(ha);
3483
3484         /* Kill the kernel thread for this host */
3485         if (ha->dpc_thread)
3486                 destroy_workqueue(ha->dpc_thread);
3487
3488         /* Kill the kernel thread for this host */
3489         if (ha->task_wq)
3490                 destroy_workqueue(ha->task_wq);
3491
3492         /* Put firmware in known state */
3493         ha->isp_ops->reset_firmware(ha);
3494
3495         if (is_qla8022(ha)) {
3496                 qla4_8xxx_idc_lock(ha);
3497                 qla4_8xxx_clear_drv_active(ha);
3498                 qla4_8xxx_idc_unlock(ha);
3499         }
3500
3501         /* Detach interrupts */
3502         if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
3503                 qla4xxx_free_irqs(ha);
3504
3505         /* free extra memory */
3506         qla4xxx_mem_free(ha);
3507 }
3508
3509 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3510 {
3511         int status = 0;
3512         unsigned long mem_base, mem_len, db_base, db_len;
3513         struct pci_dev *pdev = ha->pdev;
3514
3515         status = pci_request_regions(pdev, DRIVER_NAME);
3516         if (status) {
3517                 printk(KERN_WARNING
3518                     "scsi(%ld) Failed to reserve PIO regions (%s) "
3519                     "status=%d\n", ha->host_no, pci_name(pdev), status);
3520                 goto iospace_error_exit;
3521         }
3522
3523         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3524             __func__, pdev->revision));
3525         ha->revision_id = pdev->revision;
3526
3527         /* remap phys address */
3528         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3529         mem_len = pci_resource_len(pdev, 0);
3530         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3531             __func__, mem_base, mem_len));
3532
3533         /* mapping of pcibase pointer */
3534         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3535         if (!ha->nx_pcibase) {
3536                 printk(KERN_ERR
3537                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3538                 pci_release_regions(ha->pdev);
3539                 goto iospace_error_exit;
3540         }
3541
3542         /* Mapping of IO base pointer, door bell read and write pointer */
3543
3544         /* mapping of IO base pointer */
3545         ha->qla4_8xxx_reg =
3546             (struct device_reg_82xx  __iomem *)((uint8_t *)ha->nx_pcibase +
3547             0xbc000 + (ha->pdev->devfn << 11));
3548
3549         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
3550         db_len = pci_resource_len(pdev, 4);
3551
3552         ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3553             QLA82XX_CAM_RAM_DB2);
3554
3555         return 0;
3556 iospace_error_exit:
3557         return -ENOMEM;
3558 }
3559
3560 /***
3561  * qla4xxx_iospace_config - maps registers
3562  * @ha: pointer to adapter structure
3563  *
3564  * This routines maps HBA's registers from the pci address space
3565  * into the kernel virtual address space for memory mapped i/o.
3566  **/
3567 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3568 {
3569         unsigned long pio, pio_len, pio_flags;
3570         unsigned long mmio, mmio_len, mmio_flags;
3571
3572         pio = pci_resource_start(ha->pdev, 0);
3573         pio_len = pci_resource_len(ha->pdev, 0);
3574         pio_flags = pci_resource_flags(ha->pdev, 0);
3575         if (pio_flags & IORESOURCE_IO) {
3576                 if (pio_len < MIN_IOBASE_LEN) {
3577                         ql4_printk(KERN_WARNING, ha,
3578                                 "Invalid PCI I/O region size\n");
3579                         pio = 0;
3580                 }
3581         } else {
3582                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3583                 pio = 0;
3584         }
3585
3586         /* Use MMIO operations for all accesses. */
3587         mmio = pci_resource_start(ha->pdev, 1);
3588         mmio_len = pci_resource_len(ha->pdev, 1);
3589         mmio_flags = pci_resource_flags(ha->pdev, 1);
3590
3591         if (!(mmio_flags & IORESOURCE_MEM)) {
3592                 ql4_printk(KERN_ERR, ha,
3593                     "region #0 not an MMIO resource, aborting\n");
3594
3595                 goto iospace_error_exit;
3596         }
3597
3598         if (mmio_len < MIN_IOBASE_LEN) {
3599                 ql4_printk(KERN_ERR, ha,
3600                     "Invalid PCI mem region size, aborting\n");
3601                 goto iospace_error_exit;
3602         }
3603
3604         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3605                 ql4_printk(KERN_WARNING, ha,
3606                     "Failed to reserve PIO/MMIO regions\n");
3607
3608                 goto iospace_error_exit;
3609         }
3610
3611         ha->pio_address = pio;
3612         ha->pio_length = pio_len;
3613         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3614         if (!ha->reg) {
3615                 ql4_printk(KERN_ERR, ha,
3616                     "cannot remap MMIO, aborting\n");
3617
3618                 goto iospace_error_exit;
3619         }
3620
3621         return 0;
3622
3623 iospace_error_exit:
3624         return -ENOMEM;
3625 }
3626
3627 static struct isp_operations qla4xxx_isp_ops = {
3628         .iospace_config         = qla4xxx_iospace_config,
3629         .pci_config             = qla4xxx_pci_config,
3630         .disable_intrs          = qla4xxx_disable_intrs,
3631         .enable_intrs           = qla4xxx_enable_intrs,
3632         .start_firmware         = qla4xxx_start_firmware,
3633         .intr_handler           = qla4xxx_intr_handler,
3634         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3635         .reset_chip             = qla4xxx_soft_reset,
3636         .reset_firmware         = qla4xxx_hw_reset,
3637         .queue_iocb             = qla4xxx_queue_iocb,
3638         .complete_iocb          = qla4xxx_complete_iocb,
3639         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
3640         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
3641         .get_sys_info           = qla4xxx_get_sys_info,
3642 };
3643
3644 static struct isp_operations qla4_8xxx_isp_ops = {
3645         .iospace_config         = qla4_8xxx_iospace_config,
3646         .pci_config             = qla4_8xxx_pci_config,
3647         .disable_intrs          = qla4_8xxx_disable_intrs,
3648         .enable_intrs           = qla4_8xxx_enable_intrs,
3649         .start_firmware         = qla4_8xxx_load_risc,
3650         .intr_handler           = qla4_8xxx_intr_handler,
3651         .interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
3652         .reset_chip             = qla4_8xxx_isp_reset,
3653         .reset_firmware         = qla4_8xxx_stop_firmware,
3654         .queue_iocb             = qla4_8xxx_queue_iocb,
3655         .complete_iocb          = qla4_8xxx_complete_iocb,
3656         .rd_shdw_req_q_out      = qla4_8xxx_rd_shdw_req_q_out,
3657         .rd_shdw_rsp_q_in       = qla4_8xxx_rd_shdw_rsp_q_in,
3658         .get_sys_info           = qla4_8xxx_get_sys_info,
3659 };
3660
3661 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3662 {
3663         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3664 }
3665
3666 uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3667 {
3668         return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
3669 }
3670
3671 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3672 {
3673         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3674 }
3675
3676 uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3677 {
3678         return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
3679 }
3680
3681 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3682 {
3683         struct scsi_qla_host *ha = data;
3684         char *str = buf;
3685         int rc;
3686
3687         switch (type) {
3688         case ISCSI_BOOT_ETH_FLAGS:
3689                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3690                 break;
3691         case ISCSI_BOOT_ETH_INDEX:
3692                 rc = sprintf(str, "0\n");
3693                 break;
3694         case ISCSI_BOOT_ETH_MAC:
3695                 rc = sysfs_format_mac(str, ha->my_mac,
3696                                       MAC_ADDR_LEN);
3697                 break;
3698         default:
3699                 rc = -ENOSYS;
3700                 break;
3701         }
3702         return rc;
3703 }
3704
3705 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3706 {
3707         int rc;
3708
3709         switch (type) {
3710         case ISCSI_BOOT_ETH_FLAGS:
3711         case ISCSI_BOOT_ETH_MAC:
3712         case ISCSI_BOOT_ETH_INDEX:
3713                 rc = S_IRUGO;
3714                 break;
3715         default:
3716                 rc = 0;
3717                 break;
3718         }
3719         return rc;
3720 }
3721
3722 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3723 {
3724         struct scsi_qla_host *ha = data;
3725         char *str = buf;
3726         int rc;
3727
3728         switch (type) {
3729         case ISCSI_BOOT_INI_INITIATOR_NAME:
3730                 rc = sprintf(str, "%s\n", ha->name_string);
3731                 break;
3732         default:
3733                 rc = -ENOSYS;
3734                 break;
3735         }
3736         return rc;
3737 }
3738
3739 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3740 {
3741         int rc;
3742
3743         switch (type) {
3744         case ISCSI_BOOT_INI_INITIATOR_NAME:
3745                 rc = S_IRUGO;
3746                 break;
3747         default:
3748                 rc = 0;
3749                 break;
3750         }
3751         return rc;
3752 }
3753
3754 static ssize_t
3755 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3756                            char *buf)
3757 {
3758         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3759         char *str = buf;
3760         int rc;
3761
3762         switch (type) {
3763         case ISCSI_BOOT_TGT_NAME:
3764                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3765                 break;
3766         case ISCSI_BOOT_TGT_IP_ADDR:
3767                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3768                         rc = sprintf(buf, "%pI4\n",
3769                                      &boot_conn->dest_ipaddr.ip_address);
3770                 else
3771                         rc = sprintf(str, "%pI6\n",
3772                                      &boot_conn->dest_ipaddr.ip_address);
3773                 break;
3774         case ISCSI_BOOT_TGT_PORT:
3775                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
3776                 break;
3777         case ISCSI_BOOT_TGT_CHAP_NAME:
3778                 rc = sprintf(str,  "%.*s\n",
3779                              boot_conn->chap.target_chap_name_length,
3780                              (char *)&boot_conn->chap.target_chap_name);
3781                 break;
3782         case ISCSI_BOOT_TGT_CHAP_SECRET:
3783                 rc = sprintf(str,  "%.*s\n",
3784                              boot_conn->chap.target_secret_length,
3785                              (char *)&boot_conn->chap.target_secret);
3786                 break;
3787         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3788                 rc = sprintf(str,  "%.*s\n",
3789                              boot_conn->chap.intr_chap_name_length,
3790                              (char *)&boot_conn->chap.intr_chap_name);
3791                 break;
3792         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3793                 rc = sprintf(str,  "%.*s\n",
3794                              boot_conn->chap.intr_secret_length,
3795                              (char *)&boot_conn->chap.intr_secret);
3796                 break;
3797         case ISCSI_BOOT_TGT_FLAGS:
3798                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3799                 break;
3800         case ISCSI_BOOT_TGT_NIC_ASSOC:
3801                 rc = sprintf(str, "0\n");
3802                 break;
3803         default:
3804                 rc = -ENOSYS;
3805                 break;
3806         }
3807         return rc;
3808 }
3809
3810 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3811 {
3812         struct scsi_qla_host *ha = data;
3813         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3814
3815         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3816 }
3817
3818 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3819 {
3820         struct scsi_qla_host *ha = data;
3821         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3822
3823         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3824 }
3825
3826 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3827 {
3828         int rc;
3829
3830         switch (type) {
3831         case ISCSI_BOOT_TGT_NAME:
3832         case ISCSI_BOOT_TGT_IP_ADDR:
3833         case ISCSI_BOOT_TGT_PORT:
3834         case ISCSI_BOOT_TGT_CHAP_NAME:
3835         case ISCSI_BOOT_TGT_CHAP_SECRET:
3836         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3837         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3838         case ISCSI_BOOT_TGT_NIC_ASSOC:
3839         case ISCSI_BOOT_TGT_FLAGS:
3840                 rc = S_IRUGO;
3841                 break;
3842         default:
3843                 rc = 0;
3844                 break;
3845         }
3846         return rc;
3847 }
3848
3849 static void qla4xxx_boot_release(void *data)
3850 {
3851         struct scsi_qla_host *ha = data;
3852
3853         scsi_host_put(ha->host);
3854 }
3855
3856 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3857 {
3858         dma_addr_t buf_dma;
3859         uint32_t addr, pri_addr, sec_addr;
3860         uint32_t offset;
3861         uint16_t func_num;
3862         uint8_t val;
3863         uint8_t *buf = NULL;
3864         size_t size = 13 * sizeof(uint8_t);
3865         int ret = QLA_SUCCESS;
3866
3867         func_num = PCI_FUNC(ha->pdev->devfn);
3868
3869         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3870                    __func__, ha->pdev->device, func_num);
3871
3872         if (is_qla40XX(ha)) {
3873                 if (func_num == 1) {
3874                         addr = NVRAM_PORT0_BOOT_MODE;
3875                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3876                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3877                 } else if (func_num == 3) {
3878                         addr = NVRAM_PORT1_BOOT_MODE;
3879                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3880                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3881                 } else {
3882                         ret = QLA_ERROR;
3883                         goto exit_boot_info;
3884                 }
3885
3886                 /* Check Boot Mode */
3887                 val = rd_nvram_byte(ha, addr);
3888                 if (!(val & 0x07)) {
3889                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
3890                                           "options : 0x%x\n", __func__, val));
3891                         ret = QLA_ERROR;
3892                         goto exit_boot_info;
3893                 }
3894
3895                 /* get primary valid target index */
3896                 val = rd_nvram_byte(ha, pri_addr);
3897                 if (val & BIT_7)
3898                         ddb_index[0] = (val & 0x7f);
3899
3900                 /* get secondary valid target index */
3901                 val = rd_nvram_byte(ha, sec_addr);
3902                 if (val & BIT_7)
3903                         ddb_index[1] = (val & 0x7f);
3904
3905         } else if (is_qla8022(ha)) {
3906                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
3907                                          &buf_dma, GFP_KERNEL);
3908                 if (!buf) {
3909                         DEBUG2(ql4_printk(KERN_ERR, ha,
3910                                           "%s: Unable to allocate dma buffer\n",
3911                                            __func__));
3912                         ret = QLA_ERROR;
3913                         goto exit_boot_info;
3914                 }
3915
3916                 if (ha->port_num == 0)
3917                         offset = BOOT_PARAM_OFFSET_PORT0;
3918                 else if (ha->port_num == 1)
3919                         offset = BOOT_PARAM_OFFSET_PORT1;
3920                 else {
3921                         ret = QLA_ERROR;
3922                         goto exit_boot_info_free;
3923                 }
3924                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
3925                        offset;
3926                 if (qla4xxx_get_flash(ha, buf_dma, addr,
3927                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
3928                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
3929                                           " failed\n", ha->host_no, __func__));
3930                         ret = QLA_ERROR;
3931                         goto exit_boot_info_free;
3932                 }
3933                 /* Check Boot Mode */
3934                 if (!(buf[1] & 0x07)) {
3935                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
3936                                           " : 0x%x\n", buf[1]));
3937                         ret = QLA_ERROR;
3938                         goto exit_boot_info_free;
3939                 }
3940
3941                 /* get primary valid target index */
3942                 if (buf[2] & BIT_7)
3943                         ddb_index[0] = buf[2] & 0x7f;
3944
3945                 /* get secondary valid target index */
3946                 if (buf[11] & BIT_7)
3947                         ddb_index[1] = buf[11] & 0x7f;
3948         } else {
3949                 ret = QLA_ERROR;
3950                 goto exit_boot_info;
3951         }
3952
3953         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
3954                           " target ID %d\n", __func__, ddb_index[0],
3955                           ddb_index[1]));
3956
3957 exit_boot_info_free:
3958         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
3959 exit_boot_info:
3960         ha->pri_ddb_idx = ddb_index[0];
3961         ha->sec_ddb_idx = ddb_index[1];
3962         return ret;
3963 }
3964
3965 /**
3966  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
3967  * @ha: pointer to adapter structure
3968  * @username: CHAP username to be returned
3969  * @password: CHAP password to be returned
3970  *
3971  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
3972  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
3973  * So from the CHAP cache find the first BIDI CHAP entry and set it
3974  * to the boot record in sysfs.
3975  **/
3976 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
3977                             char *password)
3978 {
3979         int i, ret = -EINVAL;
3980         int max_chap_entries = 0;
3981         struct ql4_chap_table *chap_table;
3982
3983         if (is_qla8022(ha))
3984                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
3985                                                 sizeof(struct ql4_chap_table);
3986         else
3987                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
3988
3989         if (!ha->chap_list) {
3990                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
3991                 return ret;
3992         }
3993
3994         mutex_lock(&ha->chap_sem);
3995         for (i = 0; i < max_chap_entries; i++) {
3996                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
3997                 if (chap_table->cookie !=
3998                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
3999                         continue;
4000                 }
4001
4002                 if (chap_table->flags & BIT_7) /* local */
4003                         continue;
4004
4005                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4006                         continue;
4007
4008                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4009                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4010                 ret = 0;
4011                 break;
4012         }
4013         mutex_unlock(&ha->chap_sem);
4014
4015         return ret;
4016 }
4017
4018
4019 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4020                                    struct ql4_boot_session_info *boot_sess,
4021                                    uint16_t ddb_index)
4022 {
4023         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4024         struct dev_db_entry *fw_ddb_entry;
4025         dma_addr_t fw_ddb_entry_dma;
4026         uint16_t idx;
4027         uint16_t options;
4028         int ret = QLA_SUCCESS;
4029
4030         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4031                                           &fw_ddb_entry_dma, GFP_KERNEL);
4032         if (!fw_ddb_entry) {
4033                 DEBUG2(ql4_printk(KERN_ERR, ha,
4034                                   "%s: Unable to allocate dma buffer.\n",
4035                                   __func__));
4036                 ret = QLA_ERROR;
4037                 return ret;
4038         }
4039
4040         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4041                                    fw_ddb_entry_dma, ddb_index)) {
4042                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4043                                   "index [%d]\n", __func__, ddb_index));
4044                 ret = QLA_ERROR;
4045                 goto exit_boot_target;
4046         }
4047
4048         /* Update target name and IP from DDB */
4049         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4050                min(sizeof(boot_sess->target_name),
4051                    sizeof(fw_ddb_entry->iscsi_name)));
4052
4053         options = le16_to_cpu(fw_ddb_entry->options);
4054         if (options & DDB_OPT_IPV6_DEVICE) {
4055                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4056                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4057         } else {
4058                 boot_conn->dest_ipaddr.ip_type = 0x1;
4059                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4060                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4061         }
4062
4063         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4064
4065         /* update chap information */
4066         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4067
4068         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4069
4070                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4071
4072                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4073                                        target_chap_name,
4074                                        (char *)&boot_conn->chap.target_secret,
4075                                        idx);
4076                 if (ret) {
4077                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4078                         ret = QLA_ERROR;
4079                         goto exit_boot_target;
4080                 }
4081
4082                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4083                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4084         }
4085
4086         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4087
4088                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4089
4090                 ret = qla4xxx_get_bidi_chap(ha,
4091                                     (char *)&boot_conn->chap.intr_chap_name,
4092                                     (char *)&boot_conn->chap.intr_secret);
4093
4094                 if (ret) {
4095                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4096                         ret = QLA_ERROR;
4097                         goto exit_boot_target;
4098                 }
4099
4100                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4101                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4102         }
4103
4104 exit_boot_target:
4105         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4106                           fw_ddb_entry, fw_ddb_entry_dma);
4107         return ret;
4108 }
4109
4110 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4111 {
4112         uint16_t ddb_index[2];
4113         int ret = QLA_ERROR;
4114         int rval;
4115
4116         memset(ddb_index, 0, sizeof(ddb_index));
4117         ddb_index[0] = 0xffff;
4118         ddb_index[1] = 0xffff;
4119         ret = get_fw_boot_info(ha, ddb_index);
4120         if (ret != QLA_SUCCESS) {
4121                 DEBUG2(ql4_printk(KERN_INFO, ha,
4122                                 "%s: No boot target configured.\n", __func__));
4123                 return ret;
4124         }
4125
4126         if (ql4xdisablesysfsboot)
4127                 return QLA_SUCCESS;
4128
4129         if (ddb_index[0] == 0xffff)
4130                 goto sec_target;
4131
4132         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4133                                       ddb_index[0]);
4134         if (rval != QLA_SUCCESS) {
4135                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4136                                   "configured\n", __func__));
4137         } else
4138                 ret = QLA_SUCCESS;
4139
4140 sec_target:
4141         if (ddb_index[1] == 0xffff)
4142                 goto exit_get_boot_info;
4143
4144         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4145                                       ddb_index[1]);
4146         if (rval != QLA_SUCCESS) {
4147                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4148                                   " configured\n", __func__));
4149         } else
4150                 ret = QLA_SUCCESS;
4151
4152 exit_get_boot_info:
4153         return ret;
4154 }
4155
4156 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4157 {
4158         struct iscsi_boot_kobj *boot_kobj;
4159
4160         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4161                 return QLA_ERROR;
4162
4163         if (ql4xdisablesysfsboot) {
4164                 ql4_printk(KERN_INFO, ha,
4165                            "%s: syfsboot disabled - driver will trigger login "
4166                            "and publish session for discovery .\n", __func__);
4167                 return QLA_SUCCESS;
4168         }
4169
4170
4171         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4172         if (!ha->boot_kset)
4173                 goto kset_free;
4174
4175         if (!scsi_host_get(ha->host))
4176                 goto kset_free;
4177         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4178                                              qla4xxx_show_boot_tgt_pri_info,
4179                                              qla4xxx_tgt_get_attr_visibility,
4180                                              qla4xxx_boot_release);
4181         if (!boot_kobj)
4182                 goto put_host;
4183
4184         if (!scsi_host_get(ha->host))
4185                 goto kset_free;
4186         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4187                                              qla4xxx_show_boot_tgt_sec_info,
4188                                              qla4xxx_tgt_get_attr_visibility,
4189                                              qla4xxx_boot_release);
4190         if (!boot_kobj)
4191                 goto put_host;
4192
4193         if (!scsi_host_get(ha->host))
4194                 goto kset_free;
4195         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4196                                                qla4xxx_show_boot_ini_info,
4197                                                qla4xxx_ini_get_attr_visibility,
4198                                                qla4xxx_boot_release);
4199         if (!boot_kobj)
4200                 goto put_host;
4201
4202         if (!scsi_host_get(ha->host))
4203                 goto kset_free;
4204         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4205                                                qla4xxx_show_boot_eth_info,
4206                                                qla4xxx_eth_get_attr_visibility,
4207                                                qla4xxx_boot_release);
4208         if (!boot_kobj)
4209                 goto put_host;
4210
4211         return QLA_SUCCESS;
4212
4213 put_host:
4214         scsi_host_put(ha->host);
4215 kset_free:
4216         iscsi_boot_destroy_kset(ha->boot_kset);
4217         return -ENOMEM;
4218 }
4219
4220
4221 /**
4222  * qla4xxx_create chap_list - Create CHAP list from FLASH
4223  * @ha: pointer to adapter structure
4224  *
4225  * Read flash and make a list of CHAP entries, during login when a CHAP entry
4226  * is received, it will be checked in this list. If entry exist then the CHAP
4227  * entry index is set in the DDB. If CHAP entry does not exist in this list
4228  * then a new entry is added in FLASH in CHAP table and the index obtained is
4229  * used in the DDB.
4230  **/
4231 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4232 {
4233         int rval = 0;
4234         uint8_t *chap_flash_data = NULL;
4235         uint32_t offset;
4236         dma_addr_t chap_dma;
4237         uint32_t chap_size = 0;
4238
4239         if (is_qla40XX(ha))
4240                 chap_size = MAX_CHAP_ENTRIES_40XX  *
4241                                         sizeof(struct ql4_chap_table);
4242         else    /* Single region contains CHAP info for both
4243                  * ports which is divided into half for each port.
4244                  */
4245                 chap_size = ha->hw.flt_chap_size / 2;
4246
4247         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4248                                           &chap_dma, GFP_KERNEL);
4249         if (!chap_flash_data) {
4250                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4251                 return;
4252         }
4253         if (is_qla40XX(ha))
4254                 offset = FLASH_CHAP_OFFSET;
4255         else {
4256                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4257                 if (ha->port_num == 1)
4258                         offset += chap_size;
4259         }
4260
4261         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4262         if (rval != QLA_SUCCESS)
4263                 goto exit_chap_list;
4264
4265         if (ha->chap_list == NULL)
4266                 ha->chap_list = vmalloc(chap_size);
4267         if (ha->chap_list == NULL) {
4268                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4269                 goto exit_chap_list;
4270         }
4271
4272         memcpy(ha->chap_list, chap_flash_data, chap_size);
4273
4274 exit_chap_list:
4275         dma_free_coherent(&ha->pdev->dev, chap_size,
4276                         chap_flash_data, chap_dma);
4277 }
4278
4279 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4280                                   struct ql4_tuple_ddb *tddb)
4281 {
4282         struct scsi_qla_host *ha;
4283         struct iscsi_cls_session *cls_sess;
4284         struct iscsi_cls_conn *cls_conn;
4285         struct iscsi_session *sess;
4286         struct iscsi_conn *conn;
4287
4288         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4289         ha = ddb_entry->ha;
4290         cls_sess = ddb_entry->sess;
4291         sess = cls_sess->dd_data;
4292         cls_conn = ddb_entry->conn;
4293         conn = cls_conn->dd_data;
4294
4295         tddb->tpgt = sess->tpgt;
4296         tddb->port = conn->persistent_port;
4297         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4298         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4299 }
4300
4301 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4302                                       struct ql4_tuple_ddb *tddb,
4303                                       uint8_t *flash_isid)
4304 {
4305         uint16_t options = 0;
4306
4307         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4308         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4309                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4310
4311         options = le16_to_cpu(fw_ddb_entry->options);
4312         if (options & DDB_OPT_IPV6_DEVICE)
4313                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4314         else
4315                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4316
4317         tddb->port = le16_to_cpu(fw_ddb_entry->port);
4318
4319         if (flash_isid == NULL)
4320                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4321                        sizeof(tddb->isid));
4322         else
4323                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4324 }
4325
4326 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4327                                      struct ql4_tuple_ddb *old_tddb,
4328                                      struct ql4_tuple_ddb *new_tddb,
4329                                      uint8_t is_isid_compare)
4330 {
4331         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4332                 return QLA_ERROR;
4333
4334         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4335                 return QLA_ERROR;
4336
4337         if (old_tddb->port != new_tddb->port)
4338                 return QLA_ERROR;
4339
4340         /* For multi sessions, driver generates the ISID, so do not compare
4341          * ISID in reset path since it would be a comparison between the
4342          * driver generated ISID and firmware generated ISID. This could
4343          * lead to adding duplicated DDBs in the list as driver generated
4344          * ISID would not match firmware generated ISID.
4345          */
4346         if (is_isid_compare) {
4347                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4348                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4349                         __func__, old_tddb->isid[5], old_tddb->isid[4],
4350                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4351                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4352                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4353                         new_tddb->isid[0]));
4354
4355                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4356                            sizeof(old_tddb->isid)))
4357                         return QLA_ERROR;
4358         }
4359
4360         DEBUG2(ql4_printk(KERN_INFO, ha,
4361                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4362                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4363                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4364                           new_tddb->ip_addr, new_tddb->iscsi_name));
4365
4366         return QLA_SUCCESS;
4367 }
4368
4369 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4370                                      struct dev_db_entry *fw_ddb_entry)
4371 {
4372         struct ddb_entry *ddb_entry;
4373         struct ql4_tuple_ddb *fw_tddb = NULL;
4374         struct ql4_tuple_ddb *tmp_tddb = NULL;
4375         int idx;
4376         int ret = QLA_ERROR;
4377
4378         fw_tddb = vzalloc(sizeof(*fw_tddb));
4379         if (!fw_tddb) {
4380                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4381                                   "Memory Allocation failed.\n"));
4382                 ret = QLA_SUCCESS;
4383                 goto exit_check;
4384         }
4385
4386         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4387         if (!tmp_tddb) {
4388                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4389                                   "Memory Allocation failed.\n"));
4390                 ret = QLA_SUCCESS;
4391                 goto exit_check;
4392         }
4393
4394         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4395
4396         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4397                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4398                 if (ddb_entry == NULL)
4399                         continue;
4400
4401                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4402                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4403                         ret = QLA_SUCCESS; /* found */
4404                         goto exit_check;
4405                 }
4406         }
4407
4408 exit_check:
4409         if (fw_tddb)
4410                 vfree(fw_tddb);
4411         if (tmp_tddb)
4412                 vfree(tmp_tddb);
4413         return ret;
4414 }
4415
4416 /**
4417  * qla4xxx_check_existing_isid - check if target with same isid exist
4418  *                               in target list
4419  * @list_nt: list of target
4420  * @isid: isid to check
4421  *
4422  * This routine return QLA_SUCCESS if target with same isid exist
4423  **/
4424 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4425 {
4426         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4427         struct dev_db_entry *fw_ddb_entry;
4428
4429         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4430                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4431
4432                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4433                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4434                         return QLA_SUCCESS;
4435                 }
4436         }
4437         return QLA_ERROR;
4438 }
4439
4440 /**
4441  * qla4xxx_update_isid - compare ddbs and updated isid
4442  * @ha: Pointer to host adapter structure.
4443  * @list_nt: list of nt target
4444  * @fw_ddb_entry: firmware ddb entry
4445  *
4446  * This routine update isid if ddbs have same iqn, same isid and
4447  * different IP addr.
4448  * Return QLA_SUCCESS if isid is updated.
4449  **/
4450 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4451                                struct list_head *list_nt,
4452                                struct dev_db_entry *fw_ddb_entry)
4453 {
4454         uint8_t base_value, i;
4455
4456         base_value = fw_ddb_entry->isid[1] & 0x1f;
4457         for (i = 0; i < 8; i++) {
4458                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4459                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4460                         break;
4461         }
4462
4463         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4464                 return QLA_ERROR;
4465
4466         return QLA_SUCCESS;
4467 }
4468
4469 /**
4470  * qla4xxx_should_update_isid - check if isid need to update
4471  * @ha: Pointer to host adapter structure.
4472  * @old_tddb: ddb tuple
4473  * @new_tddb: ddb tuple
4474  *
4475  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4476  * same isid
4477  **/
4478 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4479                                       struct ql4_tuple_ddb *old_tddb,
4480                                       struct ql4_tuple_ddb *new_tddb)
4481 {
4482         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4483                 /* Same ip */
4484                 if (old_tddb->port == new_tddb->port)
4485                         return QLA_ERROR;
4486         }
4487
4488         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4489                 /* different iqn */
4490                 return QLA_ERROR;
4491
4492         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4493                    sizeof(old_tddb->isid)))
4494                 /* different isid */
4495                 return QLA_ERROR;
4496
4497         return QLA_SUCCESS;
4498 }
4499
4500 /**
4501  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4502  * @ha: Pointer to host adapter structure.
4503  * @list_nt: list of nt target.
4504  * @fw_ddb_entry: firmware ddb entry.
4505  *
4506  * This routine check if fw_ddb_entry already exists in list_nt to avoid
4507  * duplicate ddb in list_nt.
4508  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4509  * Note: This function also update isid of DDB if required.
4510  **/
4511
4512 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4513                                        struct list_head *list_nt,
4514                                        struct dev_db_entry *fw_ddb_entry)
4515 {
4516         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
4517         struct ql4_tuple_ddb *fw_tddb = NULL;
4518         struct ql4_tuple_ddb *tmp_tddb = NULL;
4519         int rval, ret = QLA_ERROR;
4520
4521         fw_tddb = vzalloc(sizeof(*fw_tddb));
4522         if (!fw_tddb) {
4523                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4524                                   "Memory Allocation failed.\n"));
4525                 ret = QLA_SUCCESS;
4526                 goto exit_check;
4527         }
4528
4529         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4530         if (!tmp_tddb) {
4531                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4532                                   "Memory Allocation failed.\n"));
4533                 ret = QLA_SUCCESS;
4534                 goto exit_check;
4535         }
4536
4537         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4538
4539         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4540                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4541                                           nt_ddb_idx->flash_isid);
4542                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4543                 /* found duplicate ddb */
4544                 if (ret == QLA_SUCCESS)
4545                         goto exit_check;
4546         }
4547
4548         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4549                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4550
4551                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4552                 if (ret == QLA_SUCCESS) {
4553                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4554                         if (rval == QLA_SUCCESS)
4555                                 ret = QLA_ERROR;
4556                         else
4557                                 ret = QLA_SUCCESS;
4558
4559                         goto exit_check;
4560                 }
4561         }
4562
4563 exit_check:
4564         if (fw_tddb)
4565                 vfree(fw_tddb);
4566         if (tmp_tddb)
4567                 vfree(tmp_tddb);
4568         return ret;
4569 }
4570
4571 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
4572 {
4573         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4574
4575         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4576                 list_del_init(&ddb_idx->list);
4577                 vfree(ddb_idx);
4578         }
4579 }
4580
4581 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
4582                                         struct dev_db_entry *fw_ddb_entry)
4583 {
4584         struct iscsi_endpoint *ep;
4585         struct sockaddr_in *addr;
4586         struct sockaddr_in6 *addr6;
4587         struct sockaddr *dst_addr;
4588         char *ip;
4589
4590         /* TODO: need to destroy on unload iscsi_endpoint*/
4591         dst_addr = vmalloc(sizeof(*dst_addr));
4592         if (!dst_addr)
4593                 return NULL;
4594
4595         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
4596                 dst_addr->sa_family = AF_INET6;
4597                 addr6 = (struct sockaddr_in6 *)dst_addr;
4598                 ip = (char *)&addr6->sin6_addr;
4599                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
4600                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
4601
4602         } else {
4603                 dst_addr->sa_family = AF_INET;
4604                 addr = (struct sockaddr_in *)dst_addr;
4605                 ip = (char *)&addr->sin_addr;
4606                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
4607                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
4608         }
4609
4610         ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
4611         vfree(dst_addr);
4612         return ep;
4613 }
4614
4615 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
4616 {
4617         if (ql4xdisablesysfsboot)
4618                 return QLA_SUCCESS;
4619         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
4620                 return QLA_ERROR;
4621         return QLA_SUCCESS;
4622 }
4623
4624 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
4625                                           struct ddb_entry *ddb_entry)
4626 {
4627         uint16_t def_timeout;
4628
4629         ddb_entry->ddb_type = FLASH_DDB;
4630         ddb_entry->fw_ddb_index = INVALID_ENTRY;
4631         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
4632         ddb_entry->ha = ha;
4633         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
4634         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
4635
4636         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
4637         atomic_set(&ddb_entry->relogin_timer, 0);
4638         atomic_set(&ddb_entry->relogin_retry_count, 0);
4639         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
4640         ddb_entry->default_relogin_timeout =
4641                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
4642                 def_timeout : LOGIN_TOV;
4643         ddb_entry->default_time2wait =
4644                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
4645 }
4646
4647 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
4648 {
4649         uint32_t idx = 0;
4650         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
4651         uint32_t sts[MBOX_REG_COUNT];
4652         uint32_t ip_state;
4653         unsigned long wtime;
4654         int ret;
4655
4656         wtime = jiffies + (HZ * IP_CONFIG_TOV);
4657         do {
4658                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
4659                         if (ip_idx[idx] == -1)
4660                                 continue;
4661
4662                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
4663
4664                         if (ret == QLA_ERROR) {
4665                                 ip_idx[idx] = -1;
4666                                 continue;
4667                         }
4668
4669                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
4670
4671                         DEBUG2(ql4_printk(KERN_INFO, ha,
4672                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
4673                                           ip_idx[idx], ip_state));
4674                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
4675                             ip_state == IP_ADDRSTATE_INVALID ||
4676                             ip_state == IP_ADDRSTATE_PREFERRED ||
4677                             ip_state == IP_ADDRSTATE_DEPRICATED ||
4678                             ip_state == IP_ADDRSTATE_DISABLING)
4679                                 ip_idx[idx] = -1;
4680                 }
4681
4682                 /* Break if all IP states checked */
4683                 if ((ip_idx[0] == -1) &&
4684                     (ip_idx[1] == -1) &&
4685                     (ip_idx[2] == -1) &&
4686                     (ip_idx[3] == -1))
4687                         break;
4688                 schedule_timeout_uninterruptible(HZ);
4689         } while (time_after(wtime, jiffies));
4690 }
4691
4692 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4693                                   struct list_head *list_st)
4694 {
4695         struct qla_ddb_index  *st_ddb_idx;
4696         int max_ddbs;
4697         int fw_idx_size;
4698         struct dev_db_entry *fw_ddb_entry;
4699         dma_addr_t fw_ddb_dma;
4700         int ret;
4701         uint32_t idx = 0, next_idx = 0;
4702         uint32_t state = 0, conn_err = 0;
4703         uint16_t conn_id = 0;
4704
4705         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4706                                       &fw_ddb_dma);
4707         if (fw_ddb_entry == NULL) {
4708                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4709                 goto exit_st_list;
4710         }
4711
4712         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4713                                      MAX_DEV_DB_ENTRIES;
4714         fw_idx_size = sizeof(struct qla_ddb_index);
4715
4716         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4717                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4718                                               NULL, &next_idx, &state,
4719                                               &conn_err, NULL, &conn_id);
4720                 if (ret == QLA_ERROR)
4721                         break;
4722
4723                 /* Ignore DDB if invalid state (unassigned) */
4724                 if (state == DDB_DS_UNASSIGNED)
4725                         goto continue_next_st;
4726
4727                 /* Check if ST, add to the list_st */
4728                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4729                         goto continue_next_st;
4730
4731                 st_ddb_idx = vzalloc(fw_idx_size);
4732                 if (!st_ddb_idx)
4733                         break;
4734
4735                 st_ddb_idx->fw_ddb_idx = idx;
4736
4737                 list_add_tail(&st_ddb_idx->list, list_st);
4738 continue_next_st:
4739                 if (next_idx == 0)
4740                         break;
4741         }
4742
4743 exit_st_list:
4744         if (fw_ddb_entry)
4745                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4746 }
4747
4748 /**
4749  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
4750  * @ha: pointer to adapter structure
4751  * @list_ddb: List from which failed ddb to be removed
4752  *
4753  * Iterate over the list of DDBs and find and remove DDBs that are either in
4754  * no connection active state or failed state
4755  **/
4756 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4757                                       struct list_head *list_ddb)
4758 {
4759         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4760         uint32_t next_idx = 0;
4761         uint32_t state = 0, conn_err = 0;
4762         int ret;
4763
4764         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4765                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4766                                               NULL, 0, NULL, &next_idx, &state,
4767                                               &conn_err, NULL, NULL);
4768                 if (ret == QLA_ERROR)
4769                         continue;
4770
4771                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4772                     state == DDB_DS_SESSION_FAILED) {
4773                         list_del_init(&ddb_idx->list);
4774                         vfree(ddb_idx);
4775                 }
4776         }
4777 }
4778
4779 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4780                                    struct dev_db_entry *fw_ddb_entry,
4781                                    int is_reset)
4782 {
4783         struct iscsi_cls_session *cls_sess;
4784         struct iscsi_session *sess;
4785         struct iscsi_cls_conn *cls_conn;
4786         struct iscsi_endpoint *ep;
4787         uint16_t cmds_max = 32;
4788         uint16_t conn_id = 0;
4789         uint32_t initial_cmdsn = 0;
4790         int ret = QLA_SUCCESS;
4791
4792         struct ddb_entry *ddb_entry = NULL;
4793
4794         /* Create session object, with INVALID_ENTRY,
4795          * the targer_id would get set when we issue the login
4796          */
4797         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4798                                        cmds_max, sizeof(struct ddb_entry),
4799                                        sizeof(struct ql4_task_data),
4800                                        initial_cmdsn, INVALID_ENTRY);
4801         if (!cls_sess) {
4802                 ret = QLA_ERROR;
4803                 goto exit_setup;
4804         }
4805
4806         /*
4807          * so calling module_put function to decrement the
4808          * reference count.
4809          **/
4810         module_put(qla4xxx_iscsi_transport.owner);
4811         sess = cls_sess->dd_data;
4812         ddb_entry = sess->dd_data;
4813         ddb_entry->sess = cls_sess;
4814
4815         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4816         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4817                sizeof(struct dev_db_entry));
4818
4819         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4820
4821         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4822
4823         if (!cls_conn) {
4824                 ret = QLA_ERROR;
4825                 goto exit_setup;
4826         }
4827
4828         ddb_entry->conn = cls_conn;
4829
4830         /* Setup ep, for displaying attributes in sysfs */
4831         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4832         if (ep) {
4833                 ep->conn = cls_conn;
4834                 cls_conn->ep = ep;
4835         } else {
4836                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4837                 ret = QLA_ERROR;
4838                 goto exit_setup;
4839         }
4840
4841         /* Update sess/conn params */
4842         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4843
4844         if (is_reset == RESET_ADAPTER) {
4845                 iscsi_block_session(cls_sess);
4846                 /* Use the relogin path to discover new devices
4847                  *  by short-circuting the logic of setting
4848                  *  timer to relogin - instead set the flags
4849                  *  to initiate login right away.
4850                  */
4851                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4852                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4853         }
4854
4855 exit_setup:
4856         return ret;
4857 }
4858
4859 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4860                                   struct list_head *list_nt, int is_reset)
4861 {
4862         struct dev_db_entry *fw_ddb_entry;
4863         dma_addr_t fw_ddb_dma;
4864         int max_ddbs;
4865         int fw_idx_size;
4866         int ret;
4867         uint32_t idx = 0, next_idx = 0;
4868         uint32_t state = 0, conn_err = 0;
4869         uint16_t conn_id = 0;
4870         struct qla_ddb_index  *nt_ddb_idx;
4871
4872         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4873                                       &fw_ddb_dma);
4874         if (fw_ddb_entry == NULL) {
4875                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4876                 goto exit_nt_list;
4877         }
4878         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4879                                      MAX_DEV_DB_ENTRIES;
4880         fw_idx_size = sizeof(struct qla_ddb_index);
4881
4882         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4883                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4884                                               NULL, &next_idx, &state,
4885                                               &conn_err, NULL, &conn_id);
4886                 if (ret == QLA_ERROR)
4887                         break;
4888
4889                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4890                         goto continue_next_nt;
4891
4892                 /* Check if NT, then add to list it */
4893                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4894                         goto continue_next_nt;
4895
4896                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
4897                     state == DDB_DS_SESSION_FAILED))
4898                         goto continue_next_nt;
4899
4900                 DEBUG2(ql4_printk(KERN_INFO, ha,
4901                                   "Adding  DDB to session = 0x%x\n", idx));
4902                 if (is_reset == INIT_ADAPTER) {
4903                         nt_ddb_idx = vmalloc(fw_idx_size);
4904                         if (!nt_ddb_idx)
4905                                 break;
4906
4907                         nt_ddb_idx->fw_ddb_idx = idx;
4908
4909                         /* Copy original isid as it may get updated in function
4910                          * qla4xxx_update_isid(). We need original isid in
4911                          * function qla4xxx_compare_tuple_ddb to find duplicate
4912                          * target */
4913                         memcpy(&nt_ddb_idx->flash_isid[0],
4914                                &fw_ddb_entry->isid[0],
4915                                sizeof(nt_ddb_idx->flash_isid));
4916
4917                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
4918                                                           fw_ddb_entry);
4919                         if (ret == QLA_SUCCESS) {
4920                                 /* free nt_ddb_idx and do not add to list_nt */
4921                                 vfree(nt_ddb_idx);
4922                                 goto continue_next_nt;
4923                         }
4924
4925                         /* Copy updated isid */
4926                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
4927                                sizeof(struct dev_db_entry));
4928
4929                         list_add_tail(&nt_ddb_idx->list, list_nt);
4930                 } else if (is_reset == RESET_ADAPTER) {
4931                         if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
4932                                                                 QLA_SUCCESS)
4933                                 goto continue_next_nt;
4934                 }
4935
4936                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
4937                 if (ret == QLA_ERROR)
4938                         goto exit_nt_list;
4939
4940 continue_next_nt:
4941                 if (next_idx == 0)
4942                         break;
4943         }
4944
4945 exit_nt_list:
4946         if (fw_ddb_entry)
4947                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4948 }
4949
4950 /**
4951  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
4952  * @ha: pointer to adapter structure
4953  * @is_reset: Is this init path or reset path
4954  *
4955  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
4956  * using connection open, then create the list of normal targets (nt)
4957  * from firmware DDBs. Based on the list of nt setup session and connection
4958  * objects.
4959  **/
4960 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
4961 {
4962         uint16_t tmo = 0;
4963         struct list_head list_st, list_nt;
4964         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
4965         unsigned long wtime;
4966
4967         if (!test_bit(AF_LINK_UP, &ha->flags)) {
4968                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
4969                 ha->is_reset = is_reset;
4970                 return;
4971         }
4972
4973         INIT_LIST_HEAD(&list_st);
4974         INIT_LIST_HEAD(&list_nt);
4975
4976         qla4xxx_build_st_list(ha, &list_st);
4977
4978         /* Before issuing conn open mbox, ensure all IPs states are configured
4979          * Note, conn open fails if IPs are not configured
4980          */
4981         qla4xxx_wait_for_ip_configuration(ha);
4982
4983         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
4984         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
4985                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
4986         }
4987
4988         /* Wait to ensure all sendtargets are done for min 12 sec wait */
4989         tmo = ((ha->def_timeout > LOGIN_TOV) &&
4990                (ha->def_timeout < LOGIN_TOV * 10) ?
4991                ha->def_timeout : LOGIN_TOV);
4992
4993         DEBUG2(ql4_printk(KERN_INFO, ha,
4994                           "Default time to wait for build ddb %d\n", tmo));
4995
4996         wtime = jiffies + (HZ * tmo);
4997         do {
4998                 if (list_empty(&list_st))
4999                         break;
5000
5001                 qla4xxx_remove_failed_ddb(ha, &list_st);
5002                 schedule_timeout_uninterruptible(HZ / 10);
5003         } while (time_after(wtime, jiffies));
5004
5005         /* Free up the sendtargets list */
5006         qla4xxx_free_ddb_list(&list_st);
5007
5008         qla4xxx_build_nt_list(ha, &list_nt, is_reset);
5009
5010         qla4xxx_free_ddb_list(&list_nt);
5011
5012         qla4xxx_free_ddb_index(ha);
5013 }
5014
5015 /**
5016  * qla4xxx_probe_adapter - callback function to probe HBA
5017  * @pdev: pointer to pci_dev structure
5018  * @pci_device_id: pointer to pci_device entry
5019  *
5020  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
5021  * It returns zero if successful. It also initializes all data necessary for
5022  * the driver.
5023  **/
5024 static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
5025                                            const struct pci_device_id *ent)
5026 {
5027         int ret = -ENODEV, status;
5028         struct Scsi_Host *host;
5029         struct scsi_qla_host *ha;
5030         uint8_t init_retry_count = 0;
5031         char buf[34];
5032         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
5033         uint32_t dev_state;
5034
5035         if (pci_enable_device(pdev))
5036                 return -1;
5037
5038         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
5039         if (host == NULL) {
5040                 printk(KERN_WARNING
5041                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
5042                 goto probe_disable_device;
5043         }
5044
5045         /* Clear our data area */
5046         ha = to_qla_host(host);
5047         memset(ha, 0, sizeof(*ha));
5048
5049         /* Save the information from PCI BIOS.  */
5050         ha->pdev = pdev;
5051         ha->host = host;
5052         ha->host_no = host->host_no;
5053
5054         pci_enable_pcie_error_reporting(pdev);
5055
5056         /* Setup Runtime configurable options */
5057         if (is_qla8022(ha)) {
5058                 ha->isp_ops = &qla4_8xxx_isp_ops;
5059                 rwlock_init(&ha->hw_lock);
5060                 ha->qdr_sn_window = -1;
5061                 ha->ddr_mn_window = -1;
5062                 ha->curr_window = 255;
5063                 ha->func_num = PCI_FUNC(ha->pdev->devfn);
5064                 nx_legacy_intr = &legacy_intr[ha->func_num];
5065                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
5066                 ha->nx_legacy_intr.tgt_status_reg =
5067                         nx_legacy_intr->tgt_status_reg;
5068                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
5069                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
5070         } else {
5071                 ha->isp_ops = &qla4xxx_isp_ops;
5072         }
5073
5074         /* Set EEH reset type to fundamental if required by hba */
5075         if (is_qla8022(ha))
5076                 pdev->needs_freset = 1;
5077
5078         /* Configure PCI I/O space. */
5079         ret = ha->isp_ops->iospace_config(ha);
5080         if (ret)
5081                 goto probe_failed_ioconfig;
5082
5083         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
5084                    pdev->device, pdev->irq, ha->reg);
5085
5086         qla4xxx_config_dma_addressing(ha);
5087
5088         /* Initialize lists and spinlocks. */
5089         INIT_LIST_HEAD(&ha->free_srb_q);
5090
5091         mutex_init(&ha->mbox_sem);
5092         mutex_init(&ha->chap_sem);
5093         init_completion(&ha->mbx_intr_comp);
5094         init_completion(&ha->disable_acb_comp);
5095
5096         spin_lock_init(&ha->hardware_lock);
5097
5098         /* Initialize work list */
5099         INIT_LIST_HEAD(&ha->work_list);
5100
5101         /* Allocate dma buffers */
5102         if (qla4xxx_mem_alloc(ha)) {
5103                 ql4_printk(KERN_WARNING, ha,
5104                     "[ERROR] Failed to allocate memory for adapter\n");
5105
5106                 ret = -ENOMEM;
5107                 goto probe_failed;
5108         }
5109
5110         host->cmd_per_lun = 3;
5111         host->max_channel = 0;
5112         host->max_lun = MAX_LUNS - 1;
5113         host->max_id = MAX_TARGETS;
5114         host->max_cmd_len = IOCB_MAX_CDB_LEN;
5115         host->can_queue = MAX_SRBS ;
5116         host->transportt = qla4xxx_scsi_transport;
5117
5118         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
5119         if (ret) {
5120                 ql4_printk(KERN_WARNING, ha,
5121                            "%s: scsi_init_shared_tag_map failed\n", __func__);
5122                 goto probe_failed;
5123         }
5124
5125         pci_set_drvdata(pdev, ha);
5126
5127         ret = scsi_add_host(host, &pdev->dev);
5128         if (ret)
5129                 goto probe_failed;
5130
5131         if (is_qla8022(ha))
5132                 (void) qla4_8xxx_get_flash_info(ha);
5133
5134         /*
5135          * Initialize the Host adapter request/response queues and
5136          * firmware
5137          * NOTE: interrupts enabled upon successful completion
5138          */
5139         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5140         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
5141             init_retry_count++ < MAX_INIT_RETRIES) {
5142
5143                 if (is_qla8022(ha)) {
5144                         qla4_8xxx_idc_lock(ha);
5145                         dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
5146                         qla4_8xxx_idc_unlock(ha);
5147                         if (dev_state == QLA82XX_DEV_FAILED) {
5148                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
5149                                     "initialize adapter. H/W is in failed state\n",
5150                                     __func__);
5151                                 break;
5152                         }
5153                 }
5154                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
5155                               "(%d)\n", __func__, init_retry_count));
5156
5157                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
5158                         continue;
5159
5160                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5161         }
5162
5163         if (!test_bit(AF_ONLINE, &ha->flags)) {
5164                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
5165
5166                 if (is_qla8022(ha) && ql4xdontresethba) {
5167                         /* Put the device in failed state. */
5168                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
5169                         qla4_8xxx_idc_lock(ha);
5170                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5171                             QLA82XX_DEV_FAILED);
5172                         qla4_8xxx_idc_unlock(ha);
5173                 }
5174                 ret = -ENODEV;
5175                 goto remove_host;
5176         }
5177
5178         /* Startup the kernel thread for this host adapter. */
5179         DEBUG2(printk("scsi: %s: Starting kernel thread for "
5180                       "qla4xxx_dpc\n", __func__));
5181         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
5182         ha->dpc_thread = create_singlethread_workqueue(buf);
5183         if (!ha->dpc_thread) {
5184                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
5185                 ret = -ENODEV;
5186                 goto remove_host;
5187         }
5188         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
5189
5190         sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
5191         ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
5192         if (!ha->task_wq) {
5193                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
5194                 ret = -ENODEV;
5195                 goto remove_host;
5196         }
5197
5198         /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
5199          * (which is called indirectly by qla4xxx_initialize_adapter),
5200          * so that irqs will be registered after crbinit but before
5201          * mbx_intr_enable.
5202          */
5203         if (!is_qla8022(ha)) {
5204                 ret = qla4xxx_request_irqs(ha);
5205                 if (ret) {
5206                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
5207                             "interrupt %d already in use.\n", pdev->irq);
5208                         goto remove_host;
5209                 }
5210         }
5211
5212         pci_save_state(ha->pdev);
5213         ha->isp_ops->enable_intrs(ha);
5214
5215         /* Start timer thread. */
5216         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
5217
5218         set_bit(AF_INIT_DONE, &ha->flags);
5219
5220         qla4_8xxx_alloc_sysfs_attr(ha);
5221
5222         printk(KERN_INFO
5223                " QLogic iSCSI HBA Driver version: %s\n"
5224                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
5225                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
5226                ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
5227                ha->patch_number, ha->build_number);
5228
5229         if (qla4xxx_setup_boot_info(ha))
5230                 ql4_printk(KERN_ERR, ha,
5231                            "%s: No iSCSI boot target configured\n", __func__);
5232
5233                 /* Perform the build ddb list and login to each */
5234         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
5235         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
5236
5237         qla4xxx_create_chap_list(ha);
5238
5239         qla4xxx_create_ifaces(ha);
5240         return 0;
5241
5242 remove_host:
5243         scsi_remove_host(ha->host);
5244
5245 probe_failed:
5246         qla4xxx_free_adapter(ha);
5247
5248 probe_failed_ioconfig:
5249         pci_disable_pcie_error_reporting(pdev);
5250         scsi_host_put(ha->host);
5251
5252 probe_disable_device:
5253         pci_disable_device(pdev);
5254
5255         return ret;
5256 }
5257
5258 /**
5259  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
5260  * @ha: pointer to adapter structure
5261  *
5262  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
5263  * so that the other port will not re-initialize while in the process of
5264  * removing the ha due to driver unload or hba hotplug.
5265  **/
5266 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
5267 {
5268         struct scsi_qla_host *other_ha = NULL;
5269         struct pci_dev *other_pdev = NULL;
5270         int fn = ISP4XXX_PCI_FN_2;
5271
5272         /*iscsi function numbers for ISP4xxx is 1 and 3*/
5273         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
5274                 fn = ISP4XXX_PCI_FN_1;
5275
5276         other_pdev =
5277                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5278                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5279                 fn));
5280
5281         /* Get other_ha if other_pdev is valid and state is enable*/
5282         if (other_pdev) {
5283                 if (atomic_read(&other_pdev->enable_cnt)) {
5284                         other_ha = pci_get_drvdata(other_pdev);
5285                         if (other_ha) {
5286                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
5287                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
5288                                     "Prevent %s reinit\n", __func__,
5289                                     dev_name(&other_ha->pdev->dev)));
5290                         }
5291                 }
5292                 pci_dev_put(other_pdev);
5293         }
5294 }
5295
5296 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
5297 {
5298         struct ddb_entry *ddb_entry;
5299         int options;
5300         int idx;
5301
5302         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5303
5304                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5305                 if ((ddb_entry != NULL) &&
5306                     (ddb_entry->ddb_type == FLASH_DDB)) {
5307
5308                         options = LOGOUT_OPTION_CLOSE_SESSION;
5309                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
5310                             == QLA_ERROR)
5311                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
5312                                            __func__);
5313
5314                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5315                         /*
5316                          * we have decremented the reference count of the driver
5317                          * when we setup the session to have the driver unload
5318                          * to be seamless without actually destroying the
5319                          * session
5320                          **/
5321                         try_module_get(qla4xxx_iscsi_transport.owner);
5322                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
5323                         qla4xxx_free_ddb(ha, ddb_entry);
5324                         iscsi_session_teardown(ddb_entry->sess);
5325                 }
5326         }
5327 }
5328 /**
5329  * qla4xxx_remove_adapter - callback function to remove adapter.
5330  * @pci_dev: PCI device pointer
5331  **/
5332 static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
5333 {
5334         struct scsi_qla_host *ha;
5335
5336         ha = pci_get_drvdata(pdev);
5337
5338         if (!is_qla8022(ha))
5339                 qla4xxx_prevent_other_port_reinit(ha);
5340
5341         /* destroy iface from sysfs */
5342         qla4xxx_destroy_ifaces(ha);
5343
5344         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
5345                 iscsi_boot_destroy_kset(ha->boot_kset);
5346
5347         qla4xxx_destroy_fw_ddb_session(ha);
5348         qla4_8xxx_free_sysfs_attr(ha);
5349
5350         scsi_remove_host(ha->host);
5351
5352         qla4xxx_free_adapter(ha);
5353
5354         scsi_host_put(ha->host);
5355
5356         pci_disable_pcie_error_reporting(pdev);
5357         pci_disable_device(pdev);
5358         pci_set_drvdata(pdev, NULL);
5359 }
5360
5361 /**
5362  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
5363  * @ha: HA context
5364  *
5365  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
5366  * supported addressing method.
5367  */
5368 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
5369 {
5370         int retval;
5371
5372         /* Update our PCI device dma_mask for full 64 bit mask */
5373         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
5374                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
5375                         dev_dbg(&ha->pdev->dev,
5376                                   "Failed to set 64 bit PCI consistent mask; "
5377                                    "using 32 bit.\n");
5378                         retval = pci_set_consistent_dma_mask(ha->pdev,
5379                                                              DMA_BIT_MASK(32));
5380                 }
5381         } else
5382                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
5383 }
5384
5385 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
5386 {
5387         struct iscsi_cls_session *cls_sess;
5388         struct iscsi_session *sess;
5389         struct ddb_entry *ddb;
5390         int queue_depth = QL4_DEF_QDEPTH;
5391
5392         cls_sess = starget_to_session(sdev->sdev_target);
5393         sess = cls_sess->dd_data;
5394         ddb = sess->dd_data;
5395
5396         sdev->hostdata = ddb;
5397         sdev->tagged_supported = 1;
5398
5399         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
5400                 queue_depth = ql4xmaxqdepth;
5401
5402         scsi_activate_tcq(sdev, queue_depth);
5403         return 0;
5404 }
5405
5406 static int qla4xxx_slave_configure(struct scsi_device *sdev)
5407 {
5408         sdev->tagged_supported = 1;
5409         return 0;
5410 }
5411
5412 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
5413 {
5414         scsi_deactivate_tcq(sdev, 1);
5415 }
5416
5417 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
5418                                       int reason)
5419 {
5420         if (!ql4xqfulltracking)
5421                 return -EOPNOTSUPP;
5422
5423         return iscsi_change_queue_depth(sdev, qdepth, reason);
5424 }
5425
5426 /**
5427  * qla4xxx_del_from_active_array - returns an active srb
5428  * @ha: Pointer to host adapter structure.
5429  * @index: index into the active_array
5430  *
5431  * This routine removes and returns the srb at the specified index
5432  **/
5433 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
5434     uint32_t index)
5435 {
5436         struct srb *srb = NULL;
5437         struct scsi_cmnd *cmd = NULL;
5438
5439         cmd = scsi_host_find_tag(ha->host, index);
5440         if (!cmd)
5441                 return srb;
5442
5443         srb = (struct srb *)CMD_SP(cmd);
5444         if (!srb)
5445                 return srb;
5446
5447         /* update counters */
5448         if (srb->flags & SRB_DMA_VALID) {
5449                 ha->req_q_count += srb->iocb_cnt;
5450                 ha->iocb_cnt -= srb->iocb_cnt;
5451                 if (srb->cmd)
5452                         srb->cmd->host_scribble =
5453                                 (unsigned char *)(unsigned long) MAX_SRBS;
5454         }
5455         return srb;
5456 }
5457
5458 /**
5459  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
5460  * @ha: Pointer to host adapter structure.
5461  * @cmd: Scsi Command to wait on.
5462  *
5463  * This routine waits for the command to be returned by the Firmware
5464  * for some max time.
5465  **/
5466 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
5467                                       struct scsi_cmnd *cmd)
5468 {
5469         int done = 0;
5470         struct srb *rp;
5471         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
5472         int ret = SUCCESS;
5473
5474         /* Dont wait on command if PCI error is being handled
5475          * by PCI AER driver
5476          */
5477         if (unlikely(pci_channel_offline(ha->pdev)) ||
5478             (test_bit(AF_EEH_BUSY, &ha->flags))) {
5479                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
5480                     ha->host_no, __func__);
5481                 return ret;
5482         }
5483
5484         do {
5485                 /* Checking to see if its returned to OS */
5486                 rp = (struct srb *) CMD_SP(cmd);
5487                 if (rp == NULL) {
5488                         done++;
5489                         break;
5490                 }
5491
5492                 msleep(2000);
5493         } while (max_wait_time--);
5494
5495         return done;
5496 }
5497
5498 /**
5499  * qla4xxx_wait_for_hba_online - waits for HBA to come online
5500  * @ha: Pointer to host adapter structure
5501  **/
5502 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
5503 {
5504         unsigned long wait_online;
5505
5506         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
5507         while (time_before(jiffies, wait_online)) {
5508
5509                 if (adapter_up(ha))
5510                         return QLA_SUCCESS;
5511
5512                 msleep(2000);
5513         }
5514
5515         return QLA_ERROR;
5516 }
5517
5518 /**
5519  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
5520  * @ha: pointer to HBA
5521  * @t: target id
5522  * @l: lun id
5523  *
5524  * This function waits for all outstanding commands to a lun to complete. It
5525  * returns 0 if all pending commands are returned and 1 otherwise.
5526  **/
5527 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
5528                                         struct scsi_target *stgt,
5529                                         struct scsi_device *sdev)
5530 {
5531         int cnt;
5532         int status = 0;
5533         struct scsi_cmnd *cmd;
5534
5535         /*
5536          * Waiting for all commands for the designated target or dev
5537          * in the active array
5538          */
5539         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
5540                 cmd = scsi_host_find_tag(ha->host, cnt);
5541                 if (cmd && stgt == scsi_target(cmd->device) &&
5542                     (!sdev || sdev == cmd->device)) {
5543                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5544                                 status++;
5545                                 break;
5546                         }
5547                 }
5548         }
5549         return status;
5550 }
5551
5552 /**
5553  * qla4xxx_eh_abort - callback for abort task.
5554  * @cmd: Pointer to Linux's SCSI command structure
5555  *
5556  * This routine is called by the Linux OS to abort the specified
5557  * command.
5558  **/
5559 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
5560 {
5561         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5562         unsigned int id = cmd->device->id;
5563         unsigned int lun = cmd->device->lun;
5564         unsigned long flags;
5565         struct srb *srb = NULL;
5566         int ret = SUCCESS;
5567         int wait = 0;
5568
5569         ql4_printk(KERN_INFO, ha,
5570             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
5571             ha->host_no, id, lun, cmd);
5572
5573         spin_lock_irqsave(&ha->hardware_lock, flags);
5574         srb = (struct srb *) CMD_SP(cmd);
5575         if (!srb) {
5576                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5577                 return SUCCESS;
5578         }
5579         kref_get(&srb->srb_ref);
5580         spin_unlock_irqrestore(&ha->hardware_lock, flags);
5581
5582         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
5583                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
5584                     ha->host_no, id, lun));
5585                 ret = FAILED;
5586         } else {
5587                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
5588                     ha->host_no, id, lun));
5589                 wait = 1;
5590         }
5591
5592         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
5593
5594         /* Wait for command to complete */
5595         if (wait) {
5596                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5597                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
5598                             ha->host_no, id, lun));
5599                         ret = FAILED;
5600                 }
5601         }
5602
5603         ql4_printk(KERN_INFO, ha,
5604             "scsi%ld:%d:%d: Abort command - %s\n",
5605             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
5606
5607         return ret;
5608 }
5609
5610 /**
5611  * qla4xxx_eh_device_reset - callback for target reset.
5612  * @cmd: Pointer to Linux's SCSI command structure
5613  *
5614  * This routine is called by the Linux OS to reset all luns on the
5615  * specified target.
5616  **/
5617 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
5618 {
5619         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5620         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5621         int ret = FAILED, stat;
5622
5623         if (!ddb_entry)
5624                 return ret;
5625
5626         ret = iscsi_block_scsi_eh(cmd);
5627         if (ret)
5628                 return ret;
5629         ret = FAILED;
5630
5631         ql4_printk(KERN_INFO, ha,
5632                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
5633                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5634
5635         DEBUG2(printk(KERN_INFO
5636                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
5637                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
5638                       cmd, jiffies, cmd->request->timeout / HZ,
5639                       ha->dpc_flags, cmd->result, cmd->allowed));
5640
5641         /* FIXME: wait for hba to go online */
5642         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
5643         if (stat != QLA_SUCCESS) {
5644                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
5645                 goto eh_dev_reset_done;
5646         }
5647
5648         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5649                                          cmd->device)) {
5650                 ql4_printk(KERN_INFO, ha,
5651                            "DEVICE RESET FAILED - waiting for "
5652                            "commands.\n");
5653                 goto eh_dev_reset_done;
5654         }
5655
5656         /* Send marker. */
5657         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5658                 MM_LUN_RESET) != QLA_SUCCESS)
5659                 goto eh_dev_reset_done;
5660
5661         ql4_printk(KERN_INFO, ha,
5662                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
5663                    ha->host_no, cmd->device->channel, cmd->device->id,
5664                    cmd->device->lun);
5665
5666         ret = SUCCESS;
5667
5668 eh_dev_reset_done:
5669
5670         return ret;
5671 }
5672
5673 /**
5674  * qla4xxx_eh_target_reset - callback for target reset.
5675  * @cmd: Pointer to Linux's SCSI command structure
5676  *
5677  * This routine is called by the Linux OS to reset the target.
5678  **/
5679 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
5680 {
5681         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5682         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5683         int stat, ret;
5684
5685         if (!ddb_entry)
5686                 return FAILED;
5687
5688         ret = iscsi_block_scsi_eh(cmd);
5689         if (ret)
5690                 return ret;
5691
5692         starget_printk(KERN_INFO, scsi_target(cmd->device),
5693                        "WARM TARGET RESET ISSUED.\n");
5694
5695         DEBUG2(printk(KERN_INFO
5696                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
5697                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
5698                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
5699                       ha->dpc_flags, cmd->result, cmd->allowed));
5700
5701         stat = qla4xxx_reset_target(ha, ddb_entry);
5702         if (stat != QLA_SUCCESS) {
5703                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5704                                "WARM TARGET RESET FAILED.\n");
5705                 return FAILED;
5706         }
5707
5708         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5709                                          NULL)) {
5710                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5711                                "WARM TARGET DEVICE RESET FAILED - "
5712                                "waiting for commands.\n");
5713                 return FAILED;
5714         }
5715
5716         /* Send marker. */
5717         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5718                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5719                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5720                                "WARM TARGET DEVICE RESET FAILED - "
5721                                "marker iocb failed.\n");
5722                 return FAILED;
5723         }
5724
5725         starget_printk(KERN_INFO, scsi_target(cmd->device),
5726                        "WARM TARGET RESET SUCCEEDED.\n");
5727         return SUCCESS;
5728 }
5729
5730 /**
5731  * qla4xxx_is_eh_active - check if error handler is running
5732  * @shost: Pointer to SCSI Host struct
5733  *
5734  * This routine finds that if reset host is called in EH
5735  * scenario or from some application like sg_reset
5736  **/
5737 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5738 {
5739         if (shost->shost_state == SHOST_RECOVERY)
5740                 return 1;
5741         return 0;
5742 }
5743
5744 /**
5745  * qla4xxx_eh_host_reset - kernel callback
5746  * @cmd: Pointer to Linux's SCSI command structure