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ql4_os.c
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1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c) 2003-2012 QLogic Corporation
4  *
5  * See LICENSE.qla4xxx for copyright and licensing details.
6  */
7 #include <linux/moduleparam.h>
8 #include <linux/slab.h>
9 #include <linux/blkdev.h>
10 #include <linux/iscsi_boot_sysfs.h>
11 #include <linux/inet.h>
12 
13 #include <scsi/scsi_tcq.h>
14 #include <scsi/scsicam.h>
15 
16 #include "ql4_def.h"
17 #include "ql4_version.h"
18 #include "ql4_glbl.h"
19 #include "ql4_dbg.h"
20 #include "ql4_inline.h"
21 #include "ql4_83xx.h"
22 
23 /*
24  * Driver version
25  */
26 static char qla4xxx_version_str[40];
27 
28 /*
29  * SRB allocation cache
30  */
31 static struct kmem_cache *srb_cachep;
32 
33 /*
34  * Module parameter information and variables
35  */
36 static int ql4xdisablesysfsboot = 1;
37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
39  " Set to disable exporting boot targets to sysfs.\n"
40  "\t\t 0 - Export boot targets\n"
41  "\t\t 1 - Do not export boot targets (Default)");
42 
43 int ql4xdontresethba;
44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
45 MODULE_PARM_DESC(ql4xdontresethba,
46  " Don't reset the HBA for driver recovery.\n"
47  "\t\t 0 - It will reset HBA (Default)\n"
48  "\t\t 1 - It will NOT reset HBA");
49 
50 int ql4xextended_error_logging;
51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
52 MODULE_PARM_DESC(ql4xextended_error_logging,
53  " Option to enable extended error logging.\n"
54  "\t\t 0 - no logging (Default)\n"
55  "\t\t 2 - debug logging");
56 
57 int ql4xenablemsix = 1;
58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
59 MODULE_PARM_DESC(ql4xenablemsix,
60  " Set to enable MSI or MSI-X interrupt mechanism.\n"
61  "\t\t 0 = enable INTx interrupt mechanism.\n"
62  "\t\t 1 = enable MSI-X interrupt mechanism (Default).\n"
63  "\t\t 2 = enable MSI interrupt mechanism.");
64 
65 #define QL4_DEF_QDEPTH 32
66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
68 MODULE_PARM_DESC(ql4xmaxqdepth,
69  " Maximum queue depth to report for target devices.\n"
70  "\t\t Default: 32.");
71 
72 static int ql4xqfulltracking = 1;
73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
74 MODULE_PARM_DESC(ql4xqfulltracking,
75  " Enable or disable dynamic tracking and adjustment of\n"
76  "\t\t scsi device queue depth.\n"
77  "\t\t 0 - Disable.\n"
78  "\t\t 1 - Enable. (Default)");
79 
80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
83  " Target Session Recovery Timeout.\n"
84  "\t\t Default: 120 sec.");
85 
86 int ql4xmdcapmask = 0x1F;
87 module_param(ql4xmdcapmask, int, S_IRUGO);
88 MODULE_PARM_DESC(ql4xmdcapmask,
89  " Set the Minidump driver capture mask level.\n"
90  "\t\t Default is 0x1F.\n"
91  "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
92 
93 int ql4xenablemd = 1;
94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
95 MODULE_PARM_DESC(ql4xenablemd,
96  " Set to enable minidump.\n"
97  "\t\t 0 - disable minidump\n"
98  "\t\t 1 - enable minidump (Default)");
99 
100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
101 /*
102  * SCSI host template entry points
103  */
104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
105 
106 /*
107  * iSCSI template entry points
108  */
109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
110  enum iscsi_param param, char *buf);
111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
112  enum iscsi_param param, char *buf);
113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
114  enum iscsi_host_param param, char *buf);
115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
116  uint32_t len);
117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
118  enum iscsi_param_type param_type,
119  int param, char *buf);
120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
122  struct sockaddr *dst_addr,
123  int non_blocking);
124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
127  enum iscsi_param param, char *buf);
128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
129 static struct iscsi_cls_conn *
130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
132  struct iscsi_cls_conn *cls_conn,
133  uint64_t transport_fd, int is_leading);
134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
135 static struct iscsi_cls_session *
136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
137  uint16_t qdepth, uint32_t initial_cmdsn);
138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
139 static void qla4xxx_task_work(struct work_struct *wdata);
140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
141 static int qla4xxx_task_xmit(struct iscsi_task *);
142 static void qla4xxx_task_cleanup(struct iscsi_task *);
143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
145  struct iscsi_stats *stats);
146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
147  uint32_t iface_type, uint32_t payload_size,
148  uint32_t pid, struct sockaddr *dst_addr);
149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
150  uint32_t *num_entries, char *buf);
151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
152 
153 /*
154  * SCSI host template entry points
155  */
156 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
157 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
158 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
159 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
160 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
161 static int qla4xxx_slave_alloc(struct scsi_device *device);
162 static int qla4xxx_slave_configure(struct scsi_device *device);
163 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
164 static umode_t qla4_attr_is_visible(int param_type, int param);
165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
166 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
167  int reason);
168 
169 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
170  QLA82XX_LEGACY_INTR_CONFIG;
171 
172 static struct scsi_host_template qla4xxx_driver_template = {
173  .module = THIS_MODULE,
174  .name = DRIVER_NAME,
175  .proc_name = DRIVER_NAME,
176  .queuecommand = qla4xxx_queuecommand,
177 
178  .eh_abort_handler = qla4xxx_eh_abort,
179  .eh_device_reset_handler = qla4xxx_eh_device_reset,
180  .eh_target_reset_handler = qla4xxx_eh_target_reset,
181  .eh_host_reset_handler = qla4xxx_eh_host_reset,
182  .eh_timed_out = qla4xxx_eh_cmd_timed_out,
183 
184  .slave_configure = qla4xxx_slave_configure,
185  .slave_alloc = qla4xxx_slave_alloc,
186  .slave_destroy = qla4xxx_slave_destroy,
187  .change_queue_depth = qla4xxx_change_queue_depth,
188 
189  .this_id = -1,
190  .cmd_per_lun = 3,
191  .use_clustering = ENABLE_CLUSTERING,
192  .sg_tablesize = SG_ALL,
193 
194  .max_sectors = 0xFFFF,
195  .shost_attrs = qla4xxx_host_attrs,
196  .host_reset = qla4xxx_host_reset,
197  .vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
198 };
199 
200 static struct iscsi_transport qla4xxx_iscsi_transport = {
201  .owner = THIS_MODULE,
202  .name = DRIVER_NAME,
203  .caps = CAP_TEXT_NEGO |
204  CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
205  CAP_DATADGST | CAP_LOGIN_OFFLOAD |
206  CAP_MULTI_R2T,
207  .attr_is_visible = qla4_attr_is_visible,
208  .create_session = qla4xxx_session_create,
209  .destroy_session = qla4xxx_session_destroy,
210  .start_conn = qla4xxx_conn_start,
211  .create_conn = qla4xxx_conn_create,
212  .bind_conn = qla4xxx_conn_bind,
213  .stop_conn = iscsi_conn_stop,
214  .destroy_conn = qla4xxx_conn_destroy,
215  .set_param = iscsi_set_param,
216  .get_conn_param = qla4xxx_conn_get_param,
217  .get_session_param = qla4xxx_session_get_param,
218  .get_ep_param = qla4xxx_get_ep_param,
219  .ep_connect = qla4xxx_ep_connect,
220  .ep_poll = qla4xxx_ep_poll,
221  .ep_disconnect = qla4xxx_ep_disconnect,
222  .get_stats = qla4xxx_conn_get_stats,
223  .send_pdu = iscsi_conn_send_pdu,
224  .xmit_task = qla4xxx_task_xmit,
225  .cleanup_task = qla4xxx_task_cleanup,
226  .alloc_pdu = qla4xxx_alloc_pdu,
227 
228  .get_host_param = qla4xxx_host_get_param,
229  .set_iface_param = qla4xxx_iface_set_param,
230  .get_iface_param = qla4xxx_get_iface_param,
231  .bsg_request = qla4xxx_bsg_request,
232  .send_ping = qla4xxx_send_ping,
233  .get_chap = qla4xxx_get_chap_list,
234  .delete_chap = qla4xxx_delete_chap,
235 };
236 
237 static struct scsi_transport_template *qla4xxx_scsi_transport;
238 
239 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
240  uint32_t iface_type, uint32_t payload_size,
241  uint32_t pid, struct sockaddr *dst_addr)
242 {
243  struct scsi_qla_host *ha = to_qla_host(shost);
244  struct sockaddr_in *addr;
245  struct sockaddr_in6 *addr6;
246  uint32_t options = 0;
247  uint8_t ipaddr[IPv6_ADDR_LEN];
248  int rval;
249 
250  memset(ipaddr, 0, IPv6_ADDR_LEN);
251  /* IPv4 to IPv4 */
252  if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
253  (dst_addr->sa_family == AF_INET)) {
254  addr = (struct sockaddr_in *)dst_addr;
255  memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
256  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
257  "dest: %pI4\n", __func__,
258  &ha->ip_config.ip_address, ipaddr));
259  rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
260  ipaddr);
261  if (rval)
262  rval = -EINVAL;
263  } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
264  (dst_addr->sa_family == AF_INET6)) {
265  /* IPv6 to IPv6 */
266  addr6 = (struct sockaddr_in6 *)dst_addr;
267  memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
268 
269  options |= PING_IPV6_PROTOCOL_ENABLE;
270 
271  /* Ping using LinkLocal address */
272  if ((iface_num == 0) || (iface_num == 1)) {
273  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
274  "src: %pI6 dest: %pI6\n", __func__,
275  &ha->ip_config.ipv6_link_local_addr,
276  ipaddr));
277  options |= PING_IPV6_LINKLOCAL_ADDR;
278  rval = qla4xxx_ping_iocb(ha, options, payload_size,
279  pid, ipaddr);
280  } else {
281  ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
282  "not supported\n", __func__, iface_num);
283  rval = -ENOSYS;
284  goto exit_send_ping;
285  }
286 
287  /*
288  * If ping using LinkLocal address fails, try ping using
289  * IPv6 address
290  */
291  if (rval != QLA_SUCCESS) {
292  options &= ~PING_IPV6_LINKLOCAL_ADDR;
293  if (iface_num == 0) {
294  options |= PING_IPV6_ADDR0;
295  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
296  "Ping src: %pI6 "
297  "dest: %pI6\n", __func__,
298  &ha->ip_config.ipv6_addr0,
299  ipaddr));
300  } else if (iface_num == 1) {
301  options |= PING_IPV6_ADDR1;
302  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
303  "Ping src: %pI6 "
304  "dest: %pI6\n", __func__,
305  &ha->ip_config.ipv6_addr1,
306  ipaddr));
307  }
308  rval = qla4xxx_ping_iocb(ha, options, payload_size,
309  pid, ipaddr);
310  if (rval)
311  rval = -EINVAL;
312  }
313  } else
314  rval = -ENOSYS;
315 exit_send_ping:
316  return rval;
317 }
318 
319 static umode_t qla4_attr_is_visible(int param_type, int param)
320 {
321  switch (param_type) {
322  case ISCSI_HOST_PARAM:
323  switch (param) {
324  case ISCSI_HOST_PARAM_HWADDRESS:
325  case ISCSI_HOST_PARAM_IPADDRESS:
326  case ISCSI_HOST_PARAM_INITIATOR_NAME:
327  case ISCSI_HOST_PARAM_PORT_STATE:
328  case ISCSI_HOST_PARAM_PORT_SPEED:
329  return S_IRUGO;
330  default:
331  return 0;
332  }
333  case ISCSI_PARAM:
334  switch (param) {
335  case ISCSI_PARAM_PERSISTENT_ADDRESS:
336  case ISCSI_PARAM_PERSISTENT_PORT:
337  case ISCSI_PARAM_CONN_ADDRESS:
338  case ISCSI_PARAM_CONN_PORT:
339  case ISCSI_PARAM_TARGET_NAME:
340  case ISCSI_PARAM_TPGT:
341  case ISCSI_PARAM_TARGET_ALIAS:
342  case ISCSI_PARAM_MAX_BURST:
343  case ISCSI_PARAM_MAX_R2T:
344  case ISCSI_PARAM_FIRST_BURST:
345  case ISCSI_PARAM_MAX_RECV_DLENGTH:
346  case ISCSI_PARAM_MAX_XMIT_DLENGTH:
347  case ISCSI_PARAM_IFACE_NAME:
348  case ISCSI_PARAM_CHAP_OUT_IDX:
349  case ISCSI_PARAM_CHAP_IN_IDX:
350  case ISCSI_PARAM_USERNAME:
351  case ISCSI_PARAM_PASSWORD:
352  case ISCSI_PARAM_USERNAME_IN:
353  case ISCSI_PARAM_PASSWORD_IN:
354  return S_IRUGO;
355  default:
356  return 0;
357  }
358  case ISCSI_NET_PARAM:
359  switch (param) {
360  case ISCSI_NET_PARAM_IPV4_ADDR:
361  case ISCSI_NET_PARAM_IPV4_SUBNET:
362  case ISCSI_NET_PARAM_IPV4_GW:
363  case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
364  case ISCSI_NET_PARAM_IFACE_ENABLE:
365  case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
366  case ISCSI_NET_PARAM_IPV6_ADDR:
367  case ISCSI_NET_PARAM_IPV6_ROUTER:
368  case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
369  case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
370  case ISCSI_NET_PARAM_VLAN_ID:
371  case ISCSI_NET_PARAM_VLAN_PRIORITY:
372  case ISCSI_NET_PARAM_VLAN_ENABLED:
373  case ISCSI_NET_PARAM_MTU:
374  case ISCSI_NET_PARAM_PORT:
375  return S_IRUGO;
376  default:
377  return 0;
378  }
379  }
380 
381  return 0;
382 }
383 
384 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
385  uint32_t *num_entries, char *buf)
386 {
387  struct scsi_qla_host *ha = to_qla_host(shost);
388  struct ql4_chap_table *chap_table;
389  struct iscsi_chap_rec *chap_rec;
390  int max_chap_entries = 0;
391  int valid_chap_entries = 0;
392  int ret = 0, i;
393 
394  if (is_qla8022(ha))
395  max_chap_entries = (ha->hw.flt_chap_size / 2) /
396  sizeof(struct ql4_chap_table);
397  else
398  max_chap_entries = MAX_CHAP_ENTRIES_40XX;
399 
400  ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
401  __func__, *num_entries, chap_tbl_idx);
402 
403  if (!buf) {
404  ret = -ENOMEM;
405  goto exit_get_chap_list;
406  }
407 
408  chap_rec = (struct iscsi_chap_rec *) buf;
409  mutex_lock(&ha->chap_sem);
410  for (i = chap_tbl_idx; i < max_chap_entries; i++) {
411  chap_table = (struct ql4_chap_table *)ha->chap_list + i;
412  if (chap_table->cookie !=
413  __constant_cpu_to_le16(CHAP_VALID_COOKIE))
414  continue;
415 
416  chap_rec->chap_tbl_idx = i;
417  strncpy(chap_rec->username, chap_table->name,
418  ISCSI_CHAP_AUTH_NAME_MAX_LEN);
419  strncpy(chap_rec->password, chap_table->secret,
420  QL4_CHAP_MAX_SECRET_LEN);
421  chap_rec->password_length = chap_table->secret_len;
422 
423  if (chap_table->flags & BIT_7) /* local */
424  chap_rec->chap_type = CHAP_TYPE_OUT;
425 
426  if (chap_table->flags & BIT_6) /* peer */
427  chap_rec->chap_type = CHAP_TYPE_IN;
428 
429  chap_rec++;
430 
431  valid_chap_entries++;
432  if (valid_chap_entries == *num_entries)
433  break;
434  else
435  continue;
436  }
437  mutex_unlock(&ha->chap_sem);
438 
439 exit_get_chap_list:
440  ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
441  __func__, valid_chap_entries);
442  *num_entries = valid_chap_entries;
443  return ret;
444 }
445 
446 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
447 {
448  int ret = 0;
449  uint16_t *chap_tbl_idx = (uint16_t *) data;
450  struct iscsi_cls_session *cls_session;
451  struct iscsi_session *sess;
452  struct ddb_entry *ddb_entry;
453 
454  if (!iscsi_is_session_dev(dev))
455  goto exit_is_chap_active;
456 
457  cls_session = iscsi_dev_to_session(dev);
458  sess = cls_session->dd_data;
459  ddb_entry = sess->dd_data;
460 
461  if (iscsi_session_chkready(cls_session))
462  goto exit_is_chap_active;
463 
464  if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
465  ret = 1;
466 
467 exit_is_chap_active:
468  return ret;
469 }
470 
471 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
472  uint16_t chap_tbl_idx)
473 {
474  int ret = 0;
475 
476  ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
477  __qla4xxx_is_chap_active);
478 
479  return ret;
480 }
481 
482 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
483 {
484  struct scsi_qla_host *ha = to_qla_host(shost);
485  struct ql4_chap_table *chap_table;
486  dma_addr_t chap_dma;
487  int max_chap_entries = 0;
488  uint32_t offset = 0;
489  uint32_t chap_size;
490  int ret = 0;
491 
492  chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
493  if (chap_table == NULL)
494  return -ENOMEM;
495 
496  memset(chap_table, 0, sizeof(struct ql4_chap_table));
497 
498  if (is_qla8022(ha))
499  max_chap_entries = (ha->hw.flt_chap_size / 2) /
500  sizeof(struct ql4_chap_table);
501  else
502  max_chap_entries = MAX_CHAP_ENTRIES_40XX;
503 
504  if (chap_tbl_idx > max_chap_entries) {
505  ret = -EINVAL;
506  goto exit_delete_chap;
507  }
508 
509  /* Check if chap index is in use.
510  * If chap is in use don't delet chap entry */
511  ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
512  if (ret) {
513  ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
514  "delete from flash\n", chap_tbl_idx);
515  ret = -EBUSY;
516  goto exit_delete_chap;
517  }
518 
519  chap_size = sizeof(struct ql4_chap_table);
520  if (is_qla40XX(ha))
521  offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
522  else {
523  offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
524  /* flt_chap_size is CHAP table size for both ports
525  * so divide it by 2 to calculate the offset for second port
526  */
527  if (ha->port_num == 1)
528  offset += (ha->hw.flt_chap_size / 2);
529  offset += (chap_tbl_idx * chap_size);
530  }
531 
532  ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
533  if (ret != QLA_SUCCESS) {
534  ret = -EINVAL;
535  goto exit_delete_chap;
536  }
537 
538  DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
539  __le16_to_cpu(chap_table->cookie)));
540 
541  if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
542  ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
543  goto exit_delete_chap;
544  }
545 
546  chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
547 
548  offset = FLASH_CHAP_OFFSET |
549  (chap_tbl_idx * sizeof(struct ql4_chap_table));
550  ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
551  FLASH_OPT_RMW_COMMIT);
552  if (ret == QLA_SUCCESS && ha->chap_list) {
553  mutex_lock(&ha->chap_sem);
554  /* Update ha chap_list cache */
555  memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
556  chap_table, sizeof(struct ql4_chap_table));
557  mutex_unlock(&ha->chap_sem);
558  }
559  if (ret != QLA_SUCCESS)
560  ret = -EINVAL;
561 
562 exit_delete_chap:
563  dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
564  return ret;
565 }
566 
567 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
568  enum iscsi_param_type param_type,
569  int param, char *buf)
570 {
571  struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
572  struct scsi_qla_host *ha = to_qla_host(shost);
573  int len = -ENOSYS;
574 
575  if (param_type != ISCSI_NET_PARAM)
576  return -ENOSYS;
577 
578  switch (param) {
579  case ISCSI_NET_PARAM_IPV4_ADDR:
580  len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
581  break;
582  case ISCSI_NET_PARAM_IPV4_SUBNET:
583  len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
584  break;
585  case ISCSI_NET_PARAM_IPV4_GW:
586  len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
587  break;
588  case ISCSI_NET_PARAM_IFACE_ENABLE:
589  if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
590  len = sprintf(buf, "%s\n",
591  (ha->ip_config.ipv4_options &
592  IPOPT_IPV4_PROTOCOL_ENABLE) ?
593  "enabled" : "disabled");
594  else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
595  len = sprintf(buf, "%s\n",
596  (ha->ip_config.ipv6_options &
597  IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
598  "enabled" : "disabled");
599  break;
600  case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
601  len = sprintf(buf, "%s\n",
602  (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
603  "dhcp" : "static");
604  break;
605  case ISCSI_NET_PARAM_IPV6_ADDR:
606  if (iface->iface_num == 0)
607  len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
608  if (iface->iface_num == 1)
609  len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
610  break;
611  case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
612  len = sprintf(buf, "%pI6\n",
613  &ha->ip_config.ipv6_link_local_addr);
614  break;
615  case ISCSI_NET_PARAM_IPV6_ROUTER:
616  len = sprintf(buf, "%pI6\n",
617  &ha->ip_config.ipv6_default_router_addr);
618  break;
619  case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
620  len = sprintf(buf, "%s\n",
621  (ha->ip_config.ipv6_addl_options &
622  IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
623  "nd" : "static");
624  break;
625  case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
626  len = sprintf(buf, "%s\n",
627  (ha->ip_config.ipv6_addl_options &
628  IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
629  "auto" : "static");
630  break;
631  case ISCSI_NET_PARAM_VLAN_ID:
632  if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
633  len = sprintf(buf, "%d\n",
634  (ha->ip_config.ipv4_vlan_tag &
635  ISCSI_MAX_VLAN_ID));
636  else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
637  len = sprintf(buf, "%d\n",
638  (ha->ip_config.ipv6_vlan_tag &
639  ISCSI_MAX_VLAN_ID));
640  break;
641  case ISCSI_NET_PARAM_VLAN_PRIORITY:
642  if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
643  len = sprintf(buf, "%d\n",
644  ((ha->ip_config.ipv4_vlan_tag >> 13) &
645  ISCSI_MAX_VLAN_PRIORITY));
646  else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
647  len = sprintf(buf, "%d\n",
648  ((ha->ip_config.ipv6_vlan_tag >> 13) &
649  ISCSI_MAX_VLAN_PRIORITY));
650  break;
651  case ISCSI_NET_PARAM_VLAN_ENABLED:
652  if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
653  len = sprintf(buf, "%s\n",
654  (ha->ip_config.ipv4_options &
655  IPOPT_VLAN_TAGGING_ENABLE) ?
656  "enabled" : "disabled");
657  else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
658  len = sprintf(buf, "%s\n",
659  (ha->ip_config.ipv6_options &
660  IPV6_OPT_VLAN_TAGGING_ENABLE) ?
661  "enabled" : "disabled");
662  break;
663  case ISCSI_NET_PARAM_MTU:
664  len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
665  break;
666  case ISCSI_NET_PARAM_PORT:
667  if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
668  len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
669  else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
670  len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
671  break;
672  default:
673  len = -ENOSYS;
674  }
675 
676  return len;
677 }
678 
679 static struct iscsi_endpoint *
680 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
681  int non_blocking)
682 {
683  int ret;
684  struct iscsi_endpoint *ep;
685  struct qla_endpoint *qla_ep;
686  struct scsi_qla_host *ha;
687  struct sockaddr_in *addr;
688  struct sockaddr_in6 *addr6;
689 
690  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
691  if (!shost) {
692  ret = -ENXIO;
693  printk(KERN_ERR "%s: shost is NULL\n",
694  __func__);
695  return ERR_PTR(ret);
696  }
697 
698  ha = iscsi_host_priv(shost);
699 
700  ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
701  if (!ep) {
702  ret = -ENOMEM;
703  return ERR_PTR(ret);
704  }
705 
706  qla_ep = ep->dd_data;
707  memset(qla_ep, 0, sizeof(struct qla_endpoint));
708  if (dst_addr->sa_family == AF_INET) {
709  memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
710  addr = (struct sockaddr_in *)&qla_ep->dst_addr;
711  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
712  (char *)&addr->sin_addr));
713  } else if (dst_addr->sa_family == AF_INET6) {
714  memcpy(&qla_ep->dst_addr, dst_addr,
715  sizeof(struct sockaddr_in6));
716  addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
717  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
718  (char *)&addr6->sin6_addr));
719  }
720 
721  qla_ep->host = shost;
722 
723  return ep;
724 }
725 
726 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
727 {
728  struct qla_endpoint *qla_ep;
729  struct scsi_qla_host *ha;
730  int ret = 0;
731 
732  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
733  qla_ep = ep->dd_data;
734  ha = to_qla_host(qla_ep->host);
735 
736  if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
737  ret = 1;
738 
739  return ret;
740 }
741 
742 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
743 {
744  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
745  iscsi_destroy_endpoint(ep);
746 }
747 
748 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
749  enum iscsi_param param,
750  char *buf)
751 {
752  struct qla_endpoint *qla_ep = ep->dd_data;
753  struct sockaddr *dst_addr;
754 
755  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
756 
757  switch (param) {
758  case ISCSI_PARAM_CONN_PORT:
759  case ISCSI_PARAM_CONN_ADDRESS:
760  if (!qla_ep)
761  return -ENOTCONN;
762 
763  dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
764  if (!dst_addr)
765  return -ENOTCONN;
766 
767  return iscsi_conn_get_addr_param((struct sockaddr_storage *)
768  &qla_ep->dst_addr, param, buf);
769  default:
770  return -ENOSYS;
771  }
772 }
773 
774 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
775  struct iscsi_stats *stats)
776 {
777  struct iscsi_session *sess;
778  struct iscsi_cls_session *cls_sess;
779  struct ddb_entry *ddb_entry;
780  struct scsi_qla_host *ha;
781  struct ql_iscsi_stats *ql_iscsi_stats;
782  int stats_size;
783  int ret;
784  dma_addr_t iscsi_stats_dma;
785 
786  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
787 
788  cls_sess = iscsi_conn_to_session(cls_conn);
789  sess = cls_sess->dd_data;
790  ddb_entry = sess->dd_data;
791  ha = ddb_entry->ha;
792 
793  stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
794  /* Allocate memory */
795  ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
796  &iscsi_stats_dma, GFP_KERNEL);
797  if (!ql_iscsi_stats) {
798  ql4_printk(KERN_ERR, ha,
799  "Unable to allocate memory for iscsi stats\n");
800  goto exit_get_stats;
801  }
802 
803  ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
804  iscsi_stats_dma);
805  if (ret != QLA_SUCCESS) {
806  ql4_printk(KERN_ERR, ha,
807  "Unable to retrieve iscsi stats\n");
808  goto free_stats;
809  }
810 
811  /* octets */
812  stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
813  stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
814  /* xmit pdus */
815  stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
816  stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
817  stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
818  stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
819  stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
820  stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
821  stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
822  stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
823  /* recv pdus */
824  stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
825  stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
826  stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
827  stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
828  stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
829  stats->logoutrsp_pdus =
830  le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
831  stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
832  stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
833  stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
834 
835 free_stats:
836  dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
837  iscsi_stats_dma);
838 exit_get_stats:
839  return;
840 }
841 
842 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
843 {
844  struct iscsi_cls_session *session;
845  struct iscsi_session *sess;
846  unsigned long flags;
847  enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
848 
849  session = starget_to_session(scsi_target(sc->device));
850  sess = session->dd_data;
851 
852  spin_lock_irqsave(&session->lock, flags);
853  if (session->state == ISCSI_SESSION_FAILED)
854  ret = BLK_EH_RESET_TIMER;
855  spin_unlock_irqrestore(&session->lock, flags);
856 
857  return ret;
858 }
859 
860 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
861 {
862  struct scsi_qla_host *ha = to_qla_host(shost);
863  struct iscsi_cls_host *ihost = shost->shost_data;
864  uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
865 
866  qla4xxx_get_firmware_state(ha);
867 
868  switch (ha->addl_fw_state & 0x0F00) {
869  case FW_ADDSTATE_LINK_SPEED_10MBPS:
870  speed = ISCSI_PORT_SPEED_10MBPS;
871  break;
872  case FW_ADDSTATE_LINK_SPEED_100MBPS:
873  speed = ISCSI_PORT_SPEED_100MBPS;
874  break;
875  case FW_ADDSTATE_LINK_SPEED_1GBPS:
876  speed = ISCSI_PORT_SPEED_1GBPS;
877  break;
878  case FW_ADDSTATE_LINK_SPEED_10GBPS:
879  speed = ISCSI_PORT_SPEED_10GBPS;
880  break;
881  }
882  ihost->port_speed = speed;
883 }
884 
885 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
886 {
887  struct scsi_qla_host *ha = to_qla_host(shost);
888  struct iscsi_cls_host *ihost = shost->shost_data;
889  uint32_t state = ISCSI_PORT_STATE_DOWN;
890 
891  if (test_bit(AF_LINK_UP, &ha->flags))
892  state = ISCSI_PORT_STATE_UP;
893 
894  ihost->port_state = state;
895 }
896 
897 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
898  enum iscsi_host_param param, char *buf)
899 {
900  struct scsi_qla_host *ha = to_qla_host(shost);
901  int len;
902 
903  switch (param) {
904  case ISCSI_HOST_PARAM_HWADDRESS:
905  len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
906  break;
907  case ISCSI_HOST_PARAM_IPADDRESS:
908  len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
909  break;
910  case ISCSI_HOST_PARAM_INITIATOR_NAME:
911  len = sprintf(buf, "%s\n", ha->name_string);
912  break;
913  case ISCSI_HOST_PARAM_PORT_STATE:
914  qla4xxx_set_port_state(shost);
915  len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
916  break;
917  case ISCSI_HOST_PARAM_PORT_SPEED:
918  qla4xxx_set_port_speed(shost);
919  len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
920  break;
921  default:
922  return -ENOSYS;
923  }
924 
925  return len;
926 }
927 
928 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
929 {
930  if (ha->iface_ipv4)
931  return;
932 
933  /* IPv4 */
934  ha->iface_ipv4 = iscsi_create_iface(ha->host,
935  &qla4xxx_iscsi_transport,
936  ISCSI_IFACE_TYPE_IPV4, 0, 0);
937  if (!ha->iface_ipv4)
938  ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
939  "iface0.\n");
940 }
941 
942 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
943 {
944  if (!ha->iface_ipv6_0)
945  /* IPv6 iface-0 */
946  ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
947  &qla4xxx_iscsi_transport,
948  ISCSI_IFACE_TYPE_IPV6, 0,
949  0);
950  if (!ha->iface_ipv6_0)
951  ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
952  "iface0.\n");
953 
954  if (!ha->iface_ipv6_1)
955  /* IPv6 iface-1 */
956  ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
957  &qla4xxx_iscsi_transport,
958  ISCSI_IFACE_TYPE_IPV6, 1,
959  0);
960  if (!ha->iface_ipv6_1)
961  ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
962  "iface1.\n");
963 }
964 
965 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
966 {
967  if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
968  qla4xxx_create_ipv4_iface(ha);
969 
970  if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
971  qla4xxx_create_ipv6_iface(ha);
972 }
973 
974 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
975 {
976  if (ha->iface_ipv4) {
977  iscsi_destroy_iface(ha->iface_ipv4);
978  ha->iface_ipv4 = NULL;
979  }
980 }
981 
982 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
983 {
984  if (ha->iface_ipv6_0) {
985  iscsi_destroy_iface(ha->iface_ipv6_0);
986  ha->iface_ipv6_0 = NULL;
987  }
988  if (ha->iface_ipv6_1) {
989  iscsi_destroy_iface(ha->iface_ipv6_1);
990  ha->iface_ipv6_1 = NULL;
991  }
992 }
993 
994 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
995 {
996  qla4xxx_destroy_ipv4_iface(ha);
997  qla4xxx_destroy_ipv6_iface(ha);
998 }
999 
1000 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1001  struct iscsi_iface_param_info *iface_param,
1002  struct addr_ctrl_blk *init_fw_cb)
1003 {
1004  /*
1005  * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1006  * iface_num 1 is valid only for IPv6 Addr.
1007  */
1008  switch (iface_param->param) {
1009  case ISCSI_NET_PARAM_IPV6_ADDR:
1010  if (iface_param->iface_num & 0x1)
1011  /* IPv6 Addr 1 */
1012  memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1013  sizeof(init_fw_cb->ipv6_addr1));
1014  else
1015  /* IPv6 Addr 0 */
1016  memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1017  sizeof(init_fw_cb->ipv6_addr0));
1018  break;
1019  case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1020  if (iface_param->iface_num & 0x1)
1021  break;
1022  memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1023  sizeof(init_fw_cb->ipv6_if_id));
1024  break;
1025  case ISCSI_NET_PARAM_IPV6_ROUTER:
1026  if (iface_param->iface_num & 0x1)
1027  break;
1028  memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1029  sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1030  break;
1031  case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1032  /* Autocfg applies to even interface */
1033  if (iface_param->iface_num & 0x1)
1034  break;
1035 
1036  if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1037  init_fw_cb->ipv6_addtl_opts &=
1038  cpu_to_le16(
1039  ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1040  else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1041  init_fw_cb->ipv6_addtl_opts |=
1042  cpu_to_le16(
1043  IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1044  else
1045  ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1046  "IPv6 addr\n");
1047  break;
1048  case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1049  /* Autocfg applies to even interface */
1050  if (iface_param->iface_num & 0x1)
1051  break;
1052 
1053  if (iface_param->value[0] ==
1054  ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1055  init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1056  IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1057  else if (iface_param->value[0] ==
1058  ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1059  init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1060  ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1061  else
1062  ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1063  "IPv6 linklocal addr\n");
1064  break;
1065  case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1066  /* Autocfg applies to even interface */
1067  if (iface_param->iface_num & 0x1)
1068  break;
1069 
1070  if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1071  memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1072  sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1073  break;
1074  case ISCSI_NET_PARAM_IFACE_ENABLE:
1075  if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1076  init_fw_cb->ipv6_opts |=
1077  cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1078  qla4xxx_create_ipv6_iface(ha);
1079  } else {
1080  init_fw_cb->ipv6_opts &=
1081  cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1082  0xFFFF);
1083  qla4xxx_destroy_ipv6_iface(ha);
1084  }
1085  break;
1086  case ISCSI_NET_PARAM_VLAN_TAG:
1087  if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1088  break;
1089  init_fw_cb->ipv6_vlan_tag =
1090  cpu_to_be16(*(uint16_t *)iface_param->value);
1091  break;
1092  case ISCSI_NET_PARAM_VLAN_ENABLED:
1093  if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1094  init_fw_cb->ipv6_opts |=
1095  cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1096  else
1097  init_fw_cb->ipv6_opts &=
1098  cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1099  break;
1100  case ISCSI_NET_PARAM_MTU:
1101  init_fw_cb->eth_mtu_size =
1102  cpu_to_le16(*(uint16_t *)iface_param->value);
1103  break;
1104  case ISCSI_NET_PARAM_PORT:
1105  /* Autocfg applies to even interface */
1106  if (iface_param->iface_num & 0x1)
1107  break;
1108 
1109  init_fw_cb->ipv6_port =
1110  cpu_to_le16(*(uint16_t *)iface_param->value);
1111  break;
1112  default:
1113  ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1114  iface_param->param);
1115  break;
1116  }
1117 }
1118 
1119 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1120  struct iscsi_iface_param_info *iface_param,
1121  struct addr_ctrl_blk *init_fw_cb)
1122 {
1123  switch (iface_param->param) {
1124  case ISCSI_NET_PARAM_IPV4_ADDR:
1125  memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1126  sizeof(init_fw_cb->ipv4_addr));
1127  break;
1128  case ISCSI_NET_PARAM_IPV4_SUBNET:
1129  memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1130  sizeof(init_fw_cb->ipv4_subnet));
1131  break;
1132  case ISCSI_NET_PARAM_IPV4_GW:
1133  memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1134  sizeof(init_fw_cb->ipv4_gw_addr));
1135  break;
1136  case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1137  if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1138  init_fw_cb->ipv4_tcp_opts |=
1139  cpu_to_le16(TCPOPT_DHCP_ENABLE);
1140  else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1141  init_fw_cb->ipv4_tcp_opts &=
1142  cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1143  else
1144  ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1145  break;
1146  case ISCSI_NET_PARAM_IFACE_ENABLE:
1147  if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1148  init_fw_cb->ipv4_ip_opts |=
1149  cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1150  qla4xxx_create_ipv4_iface(ha);
1151  } else {
1152  init_fw_cb->ipv4_ip_opts &=
1153  cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1154  0xFFFF);
1155  qla4xxx_destroy_ipv4_iface(ha);
1156  }
1157  break;
1158  case ISCSI_NET_PARAM_VLAN_TAG:
1159  if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1160  break;
1161  init_fw_cb->ipv4_vlan_tag =
1162  cpu_to_be16(*(uint16_t *)iface_param->value);
1163  break;
1164  case ISCSI_NET_PARAM_VLAN_ENABLED:
1165  if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1166  init_fw_cb->ipv4_ip_opts |=
1167  cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1168  else
1169  init_fw_cb->ipv4_ip_opts &=
1170  cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1171  break;
1172  case ISCSI_NET_PARAM_MTU:
1173  init_fw_cb->eth_mtu_size =
1174  cpu_to_le16(*(uint16_t *)iface_param->value);
1175  break;
1176  case ISCSI_NET_PARAM_PORT:
1177  init_fw_cb->ipv4_port =
1178  cpu_to_le16(*(uint16_t *)iface_param->value);
1179  break;
1180  default:
1181  ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1182  iface_param->param);
1183  break;
1184  }
1185 }
1186 
1187 static void
1188 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1189 {
1190  struct addr_ctrl_blk_def *acb;
1191  acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1192  memset(acb->reserved1, 0, sizeof(acb->reserved1));
1193  memset(acb->reserved2, 0, sizeof(acb->reserved2));
1194  memset(acb->reserved3, 0, sizeof(acb->reserved3));
1195  memset(acb->reserved4, 0, sizeof(acb->reserved4));
1196  memset(acb->reserved5, 0, sizeof(acb->reserved5));
1197  memset(acb->reserved6, 0, sizeof(acb->reserved6));
1198  memset(acb->reserved7, 0, sizeof(acb->reserved7));
1199  memset(acb->reserved8, 0, sizeof(acb->reserved8));
1200  memset(acb->reserved9, 0, sizeof(acb->reserved9));
1201  memset(acb->reserved10, 0, sizeof(acb->reserved10));
1202  memset(acb->reserved11, 0, sizeof(acb->reserved11));
1203  memset(acb->reserved12, 0, sizeof(acb->reserved12));
1204  memset(acb->reserved13, 0, sizeof(acb->reserved13));
1205  memset(acb->reserved14, 0, sizeof(acb->reserved14));
1206  memset(acb->reserved15, 0, sizeof(acb->reserved15));
1207 }
1208 
1209 static int
1210 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1211 {
1212  struct scsi_qla_host *ha = to_qla_host(shost);
1213  int rval = 0;
1214  struct iscsi_iface_param_info *iface_param = NULL;
1215  struct addr_ctrl_blk *init_fw_cb = NULL;
1216  dma_addr_t init_fw_cb_dma;
1217  uint32_t mbox_cmd[MBOX_REG_COUNT];
1218  uint32_t mbox_sts[MBOX_REG_COUNT];
1219  uint32_t rem = len;
1220  struct nlattr *attr;
1221 
1222  init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1223  sizeof(struct addr_ctrl_blk),
1224  &init_fw_cb_dma, GFP_KERNEL);
1225  if (!init_fw_cb) {
1226  ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1227  __func__);
1228  return -ENOMEM;
1229  }
1230 
1231  memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1232  memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1233  memset(&mbox_sts, 0, sizeof(mbox_sts));
1234 
1235  if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1236  ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1237  rval = -EIO;
1238  goto exit_init_fw_cb;
1239  }
1240 
1241  nla_for_each_attr(attr, data, len, rem) {
1242  iface_param = nla_data(attr);
1243 
1244  if (iface_param->param_type != ISCSI_NET_PARAM)
1245  continue;
1246 
1247  switch (iface_param->iface_type) {
1248  case ISCSI_IFACE_TYPE_IPV4:
1249  switch (iface_param->iface_num) {
1250  case 0:
1251  qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1252  break;
1253  default:
1254  /* Cannot have more than one IPv4 interface */
1255  ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1256  "number = %d\n",
1257  iface_param->iface_num);
1258  break;
1259  }
1260  break;
1261  case ISCSI_IFACE_TYPE_IPV6:
1262  switch (iface_param->iface_num) {
1263  case 0:
1264  case 1:
1265  qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1266  break;
1267  default:
1268  /* Cannot have more than two IPv6 interface */
1269  ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1270  "number = %d\n",
1271  iface_param->iface_num);
1272  break;
1273  }
1274  break;
1275  default:
1276  ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1277  break;
1278  }
1279  }
1280 
1281  init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1282 
1283  rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1284  sizeof(struct addr_ctrl_blk),
1285  FLASH_OPT_RMW_COMMIT);
1286  if (rval != QLA_SUCCESS) {
1287  ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1288  __func__);
1289  rval = -EIO;
1290  goto exit_init_fw_cb;
1291  }
1292 
1293  rval = qla4xxx_disable_acb(ha);
1294  if (rval != QLA_SUCCESS) {
1295  ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1296  __func__);
1297  rval = -EIO;
1298  goto exit_init_fw_cb;
1299  }
1300 
1301  wait_for_completion_timeout(&ha->disable_acb_comp,
1302  DISABLE_ACB_TOV * HZ);
1303 
1304  qla4xxx_initcb_to_acb(init_fw_cb);
1305 
1306  rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1307  if (rval != QLA_SUCCESS) {
1308  ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1309  __func__);
1310  rval = -EIO;
1311  goto exit_init_fw_cb;
1312  }
1313 
1314  memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1315  qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1316  init_fw_cb_dma);
1317 
1318 exit_init_fw_cb:
1319  dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1320  init_fw_cb, init_fw_cb_dma);
1321 
1322  return rval;
1323 }
1324 
1325 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1326  enum iscsi_param param, char *buf)
1327 {
1328  struct iscsi_session *sess = cls_sess->dd_data;
1329  struct ddb_entry *ddb_entry = sess->dd_data;
1330  struct scsi_qla_host *ha = ddb_entry->ha;
1331  int rval, len;
1332  uint16_t idx;
1333 
1334  switch (param) {
1335  case ISCSI_PARAM_CHAP_IN_IDX:
1336  rval = qla4xxx_get_chap_index(ha, sess->username_in,
1337  sess->password_in, BIDI_CHAP,
1338  &idx);
1339  if (rval)
1340  return -EINVAL;
1341 
1342  len = sprintf(buf, "%hu\n", idx);
1343  break;
1344  case ISCSI_PARAM_CHAP_OUT_IDX:
1345  rval = qla4xxx_get_chap_index(ha, sess->username,
1346  sess->password, LOCAL_CHAP,
1347  &idx);
1348  if (rval)
1349  return -EINVAL;
1350 
1351  len = sprintf(buf, "%hu\n", idx);
1352  break;
1353  default:
1354  return iscsi_session_get_param(cls_sess, param, buf);
1355  }
1356 
1357  return len;
1358 }
1359 
1360 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1361  enum iscsi_param param, char *buf)
1362 {
1363  struct iscsi_conn *conn;
1364  struct qla_conn *qla_conn;
1365  struct sockaddr *dst_addr;
1366  int len = 0;
1367 
1368  conn = cls_conn->dd_data;
1369  qla_conn = conn->dd_data;
1370  dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1371 
1372  switch (param) {
1373  case ISCSI_PARAM_CONN_PORT:
1374  case ISCSI_PARAM_CONN_ADDRESS:
1375  return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1376  dst_addr, param, buf);
1377  default:
1378  return iscsi_conn_get_param(cls_conn, param, buf);
1379  }
1380 
1381  return len;
1382 
1383 }
1384 
1385 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1386 {
1387  uint32_t mbx_sts = 0;
1388  uint16_t tmp_ddb_index;
1389  int ret;
1390 
1391 get_ddb_index:
1392  tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1393 
1394  if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1395  DEBUG2(ql4_printk(KERN_INFO, ha,
1396  "Free DDB index not available\n"));
1397  ret = QLA_ERROR;
1398  goto exit_get_ddb_index;
1399  }
1400 
1401  if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1402  goto get_ddb_index;
1403 
1404  DEBUG2(ql4_printk(KERN_INFO, ha,
1405  "Found a free DDB index at %d\n", tmp_ddb_index));
1406  ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1407  if (ret == QLA_ERROR) {
1408  if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1409  ql4_printk(KERN_INFO, ha,
1410  "DDB index = %d not available trying next\n",
1411  tmp_ddb_index);
1412  goto get_ddb_index;
1413  }
1414  DEBUG2(ql4_printk(KERN_INFO, ha,
1415  "Free FW DDB not available\n"));
1416  }
1417 
1418  *ddb_index = tmp_ddb_index;
1419 
1420 exit_get_ddb_index:
1421  return ret;
1422 }
1423 
1424 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1425  struct ddb_entry *ddb_entry,
1426  char *existing_ipaddr,
1427  char *user_ipaddr)
1428 {
1429  uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1430  char formatted_ipaddr[DDB_IPADDR_LEN];
1431  int status = QLA_SUCCESS, ret = 0;
1432 
1433  if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1434  ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1435  '\0', NULL);
1436  if (ret == 0) {
1437  status = QLA_ERROR;
1438  goto out_match;
1439  }
1440  ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1441  } else {
1442  ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1443  '\0', NULL);
1444  if (ret == 0) {
1445  status = QLA_ERROR;
1446  goto out_match;
1447  }
1448  ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1449  }
1450 
1451  if (strcmp(existing_ipaddr, formatted_ipaddr))
1452  status = QLA_ERROR;
1453 
1454 out_match:
1455  return status;
1456 }
1457 
1458 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1459  struct iscsi_cls_conn *cls_conn)
1460 {
1461  int idx = 0, max_ddbs, rval;
1462  struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1463  struct iscsi_session *sess, *existing_sess;
1464  struct iscsi_conn *conn, *existing_conn;
1465  struct ddb_entry *ddb_entry;
1466 
1467  sess = cls_sess->dd_data;
1468  conn = cls_conn->dd_data;
1469 
1470  if (sess->targetname == NULL ||
1471  conn->persistent_address == NULL ||
1472  conn->persistent_port == 0)
1473  return QLA_ERROR;
1474 
1475  max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1476  MAX_DEV_DB_ENTRIES;
1477 
1478  for (idx = 0; idx < max_ddbs; idx++) {
1479  ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1480  if (ddb_entry == NULL)
1481  continue;
1482 
1483  if (ddb_entry->ddb_type != FLASH_DDB)
1484  continue;
1485 
1486  existing_sess = ddb_entry->sess->dd_data;
1487  existing_conn = ddb_entry->conn->dd_data;
1488 
1489  if (existing_sess->targetname == NULL ||
1490  existing_conn->persistent_address == NULL ||
1491  existing_conn->persistent_port == 0)
1492  continue;
1493 
1494  DEBUG2(ql4_printk(KERN_INFO, ha,
1495  "IQN = %s User IQN = %s\n",
1496  existing_sess->targetname,
1497  sess->targetname));
1498 
1499  DEBUG2(ql4_printk(KERN_INFO, ha,
1500  "IP = %s User IP = %s\n",
1501  existing_conn->persistent_address,
1502  conn->persistent_address));
1503 
1504  DEBUG2(ql4_printk(KERN_INFO, ha,
1505  "Port = %d User Port = %d\n",
1506  existing_conn->persistent_port,
1507  conn->persistent_port));
1508 
1509  if (strcmp(existing_sess->targetname, sess->targetname))
1510  continue;
1511  rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1512  existing_conn->persistent_address,
1513  conn->persistent_address);
1514  if (rval == QLA_ERROR)
1515  continue;
1516  if (existing_conn->persistent_port != conn->persistent_port)
1517  continue;
1518  break;
1519  }
1520 
1521  if (idx == max_ddbs)
1522  return QLA_ERROR;
1523 
1524  DEBUG2(ql4_printk(KERN_INFO, ha,
1525  "Match found in fwdb sessions\n"));
1526  return QLA_SUCCESS;
1527 }
1528 
1529 static struct iscsi_cls_session *
1530 qla4xxx_session_create(struct iscsi_endpoint *ep,
1531  uint16_t cmds_max, uint16_t qdepth,
1532  uint32_t initial_cmdsn)
1533 {
1534  struct iscsi_cls_session *cls_sess;
1535  struct scsi_qla_host *ha;
1536  struct qla_endpoint *qla_ep;
1537  struct ddb_entry *ddb_entry;
1538  uint16_t ddb_index;
1539  struct iscsi_session *sess;
1540  struct sockaddr *dst_addr;
1541  int ret;
1542 
1543  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1544  if (!ep) {
1545  printk(KERN_ERR "qla4xxx: missing ep.\n");
1546  return NULL;
1547  }
1548 
1549  qla_ep = ep->dd_data;
1550  dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1551  ha = to_qla_host(qla_ep->host);
1552 
1553  ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1554  if (ret == QLA_ERROR)
1555  return NULL;
1556 
1557  cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1558  cmds_max, sizeof(struct ddb_entry),
1559  sizeof(struct ql4_task_data),
1560  initial_cmdsn, ddb_index);
1561  if (!cls_sess)
1562  return NULL;
1563 
1564  sess = cls_sess->dd_data;
1565  ddb_entry = sess->dd_data;
1566  ddb_entry->fw_ddb_index = ddb_index;
1567  ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1568  ddb_entry->ha = ha;
1569  ddb_entry->sess = cls_sess;
1570  ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1571  ddb_entry->ddb_change = qla4xxx_ddb_change;
1572  cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1573  ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1574  ha->tot_ddbs++;
1575 
1576  return cls_sess;
1577 }
1578 
1579 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1580 {
1581  struct iscsi_session *sess;
1582  struct ddb_entry *ddb_entry;
1583  struct scsi_qla_host *ha;
1584  unsigned long flags, wtime;
1585  struct dev_db_entry *fw_ddb_entry = NULL;
1586  dma_addr_t fw_ddb_entry_dma;
1587  uint32_t ddb_state;
1588  int ret;
1589 
1590  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1591  sess = cls_sess->dd_data;
1592  ddb_entry = sess->dd_data;
1593  ha = ddb_entry->ha;
1594 
1595  fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1596  &fw_ddb_entry_dma, GFP_KERNEL);
1597  if (!fw_ddb_entry) {
1598  ql4_printk(KERN_ERR, ha,
1599  "%s: Unable to allocate dma buffer\n", __func__);
1600  goto destroy_session;
1601  }
1602 
1603  wtime = jiffies + (HZ * LOGOUT_TOV);
1604  do {
1605  ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1606  fw_ddb_entry, fw_ddb_entry_dma,
1607  NULL, NULL, &ddb_state, NULL,
1608  NULL, NULL);
1609  if (ret == QLA_ERROR)
1610  goto destroy_session;
1611 
1612  if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1613  (ddb_state == DDB_DS_SESSION_FAILED))
1614  goto destroy_session;
1615 
1616  schedule_timeout_uninterruptible(HZ);
1617  } while ((time_after(wtime, jiffies)));
1618 
1619 destroy_session:
1620  qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1621 
1622  spin_lock_irqsave(&ha->hardware_lock, flags);
1623  qla4xxx_free_ddb(ha, ddb_entry);
1624  spin_unlock_irqrestore(&ha->hardware_lock, flags);
1625 
1626  iscsi_session_teardown(cls_sess);
1627 
1628  if (fw_ddb_entry)
1629  dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1630  fw_ddb_entry, fw_ddb_entry_dma);
1631 }
1632 
1633 static struct iscsi_cls_conn *
1634 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1635 {
1636  struct iscsi_cls_conn *cls_conn;
1637  struct iscsi_session *sess;
1638  struct ddb_entry *ddb_entry;
1639 
1640  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1641  cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1642  conn_idx);
1643  if (!cls_conn)
1644  return NULL;
1645 
1646  sess = cls_sess->dd_data;
1647  ddb_entry = sess->dd_data;
1648  ddb_entry->conn = cls_conn;
1649 
1650  return cls_conn;
1651 }
1652 
1653 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1654  struct iscsi_cls_conn *cls_conn,
1655  uint64_t transport_fd, int is_leading)
1656 {
1657  struct iscsi_conn *conn;
1658  struct qla_conn *qla_conn;
1659  struct iscsi_endpoint *ep;
1660 
1661  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1662 
1663  if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1664  return -EINVAL;
1665  ep = iscsi_lookup_endpoint(transport_fd);
1666  conn = cls_conn->dd_data;
1667  qla_conn = conn->dd_data;
1668  qla_conn->qla_ep = ep->dd_data;
1669  return 0;
1670 }
1671 
1672 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1673 {
1674  struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1675  struct iscsi_session *sess;
1676  struct ddb_entry *ddb_entry;
1677  struct scsi_qla_host *ha;
1678  struct dev_db_entry *fw_ddb_entry = NULL;
1679  dma_addr_t fw_ddb_entry_dma;
1680  uint32_t mbx_sts = 0;
1681  int ret = 0;
1682  int status = QLA_SUCCESS;
1683 
1684  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1685  sess = cls_sess->dd_data;
1686  ddb_entry = sess->dd_data;
1687  ha = ddb_entry->ha;
1688 
1689  /* Check if we have matching FW DDB, if yes then do not
1690  * login to this target. This could cause target to logout previous
1691  * connection
1692  */
1693  ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1694  if (ret == QLA_SUCCESS) {
1695  ql4_printk(KERN_INFO, ha,
1696  "Session already exist in FW.\n");
1697  ret = -EEXIST;
1698  goto exit_conn_start;
1699  }
1700 
1701  fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1702  &fw_ddb_entry_dma, GFP_KERNEL);
1703  if (!fw_ddb_entry) {
1704  ql4_printk(KERN_ERR, ha,
1705  "%s: Unable to allocate dma buffer\n", __func__);
1706  ret = -ENOMEM;
1707  goto exit_conn_start;
1708  }
1709 
1710  ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1711  if (ret) {
1712  /* If iscsid is stopped and started then no need to do
1713  * set param again since ddb state will be already
1714  * active and FW does not allow set ddb to an
1715  * active session.
1716  */
1717  if (mbx_sts)
1718  if (ddb_entry->fw_ddb_device_state ==
1719  DDB_DS_SESSION_ACTIVE) {
1720  ddb_entry->unblock_sess(ddb_entry->sess);
1721  goto exit_set_param;
1722  }
1723 
1724  ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1725  __func__, ddb_entry->fw_ddb_index);
1726  goto exit_conn_start;
1727  }
1728 
1729  status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1730  if (status == QLA_ERROR) {
1731  ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1732  sess->targetname);
1733  ret = -EINVAL;
1734  goto exit_conn_start;
1735  }
1736 
1737  if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1738  ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1739 
1740  DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1741  ddb_entry->fw_ddb_device_state));
1742 
1743 exit_set_param:
1744  ret = 0;
1745 
1746 exit_conn_start:
1747  if (fw_ddb_entry)
1748  dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1749  fw_ddb_entry, fw_ddb_entry_dma);
1750  return ret;
1751 }
1752 
1753 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1754 {
1755  struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1756  struct iscsi_session *sess;
1757  struct scsi_qla_host *ha;
1758  struct ddb_entry *ddb_entry;
1759  int options;
1760 
1761  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1762  sess = cls_sess->dd_data;
1763  ddb_entry = sess->dd_data;
1764  ha = ddb_entry->ha;
1765 
1766  options = LOGOUT_OPTION_CLOSE_SESSION;
1767  if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1768  ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1769 }
1770 
1771 static void qla4xxx_task_work(struct work_struct *wdata)
1772 {
1773  struct ql4_task_data *task_data;
1774  struct scsi_qla_host *ha;
1775  struct passthru_status *sts;
1776  struct iscsi_task *task;
1777  struct iscsi_hdr *hdr;
1778  uint8_t *data;
1779  uint32_t data_len;
1780  struct iscsi_conn *conn;
1781  int hdr_len;
1782  itt_t itt;
1783 
1784  task_data = container_of(wdata, struct ql4_task_data, task_work);
1785  ha = task_data->ha;
1786  task = task_data->task;
1787  sts = &task_data->sts;
1788  hdr_len = sizeof(struct iscsi_hdr);
1789 
1790  DEBUG3(printk(KERN_INFO "Status returned\n"));
1791  DEBUG3(qla4xxx_dump_buffer(sts, 64));
1792  DEBUG3(printk(KERN_INFO "Response buffer"));
1793  DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1794 
1795  conn = task->conn;
1796 
1797  switch (sts->completionStatus) {
1798  case PASSTHRU_STATUS_COMPLETE:
1799  hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1800  /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1801  itt = sts->handle;
1802  hdr->itt = itt;
1803  data = task_data->resp_buffer + hdr_len;
1804  data_len = task_data->resp_len - hdr_len;
1805  iscsi_complete_pdu(conn, hdr, data, data_len);
1806  break;
1807  default:
1808  ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1809  sts->completionStatus);
1810  break;
1811  }
1812  return;
1813 }
1814 
1815 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1816 {
1817  struct ql4_task_data *task_data;
1818  struct iscsi_session *sess;
1819  struct ddb_entry *ddb_entry;
1820  struct scsi_qla_host *ha;
1821  int hdr_len;
1822 
1823  sess = task->conn->session;
1824  ddb_entry = sess->dd_data;
1825  ha = ddb_entry->ha;
1826  task_data = task->dd_data;
1827  memset(task_data, 0, sizeof(struct ql4_task_data));
1828 
1829  if (task->sc) {
1830  ql4_printk(KERN_INFO, ha,
1831  "%s: SCSI Commands not implemented\n", __func__);
1832  return -EINVAL;
1833  }
1834 
1835  hdr_len = sizeof(struct iscsi_hdr);
1836  task_data->ha = ha;
1837  task_data->task = task;
1838 
1839  if (task->data_count) {
1840  task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1841  task->data_count,
1842  PCI_DMA_TODEVICE);
1843  }
1844 
1845  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1846  __func__, task->conn->max_recv_dlength, hdr_len));
1847 
1848  task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1849  task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1850  task_data->resp_len,
1851  &task_data->resp_dma,
1852  GFP_ATOMIC);
1853  if (!task_data->resp_buffer)
1854  goto exit_alloc_pdu;
1855 
1856  task_data->req_len = task->data_count + hdr_len;
1857  task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1858  task_data->req_len,
1859  &task_data->req_dma,
1860  GFP_ATOMIC);
1861  if (!task_data->req_buffer)
1862  goto exit_alloc_pdu;
1863 
1864  task->hdr = task_data->req_buffer;
1865 
1866  INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1867 
1868  return 0;
1869 
1870 exit_alloc_pdu:
1871  if (task_data->resp_buffer)
1872  dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1873  task_data->resp_buffer, task_data->resp_dma);
1874 
1875  if (task_data->req_buffer)
1876  dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1877  task_data->req_buffer, task_data->req_dma);
1878  return -ENOMEM;
1879 }
1880 
1881 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1882 {
1883  struct ql4_task_data *task_data;
1884  struct iscsi_session *sess;
1885  struct ddb_entry *ddb_entry;
1886  struct scsi_qla_host *ha;
1887  int hdr_len;
1888 
1889  hdr_len = sizeof(struct iscsi_hdr);
1890  sess = task->conn->session;
1891  ddb_entry = sess->dd_data;
1892  ha = ddb_entry->ha;
1893  task_data = task->dd_data;
1894 
1895  if (task->data_count) {
1896  dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1897  task->data_count, PCI_DMA_TODEVICE);
1898  }
1899 
1900  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1901  __func__, task->conn->max_recv_dlength, hdr_len));
1902 
1903  dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1904  task_data->resp_buffer, task_data->resp_dma);
1905  dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1906  task_data->req_buffer, task_data->req_dma);
1907  return;
1908 }
1909 
1910 static int qla4xxx_task_xmit(struct iscsi_task *task)
1911 {
1912  struct scsi_cmnd *sc = task->sc;
1913  struct iscsi_session *sess = task->conn->session;
1914  struct ddb_entry *ddb_entry = sess->dd_data;
1915  struct scsi_qla_host *ha = ddb_entry->ha;
1916 
1917  if (!sc)
1918  return qla4xxx_send_passthru0(task);
1919 
1920  ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1921  __func__);
1922  return -ENOSYS;
1923 }
1924 
1925 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1926  struct dev_db_entry *fw_ddb_entry,
1927  struct iscsi_cls_session *cls_sess,
1928  struct iscsi_cls_conn *cls_conn)
1929 {
1930  int buflen = 0;
1931  struct iscsi_session *sess;
1932  struct ddb_entry *ddb_entry;
1933  struct iscsi_conn *conn;
1934  char ip_addr[DDB_IPADDR_LEN];
1935  uint16_t options = 0;
1936 
1937  sess = cls_sess->dd_data;
1938  ddb_entry = sess->dd_data;
1939  conn = cls_conn->dd_data;
1940 
1941  ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
1942 
1943  conn->max_recv_dlength = BYTE_UNITS *
1944  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1945 
1946  conn->max_xmit_dlength = BYTE_UNITS *
1947  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1948 
1949  sess->initial_r2t_en =
1950  (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1951 
1952  sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1953 
1954  sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1955 
1956  sess->first_burst = BYTE_UNITS *
1957  le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1958 
1959  sess->max_burst = BYTE_UNITS *
1960  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1961 
1962  sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1963 
1964  sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1965 
1966  conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1967 
1968  sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1969 
1970  options = le16_to_cpu(fw_ddb_entry->options);
1971  if (options & DDB_OPT_IPV6_DEVICE)
1972  sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1973  else
1974  sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1975 
1976  iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1977  (char *)fw_ddb_entry->iscsi_name, buflen);
1978  iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1979  (char *)ha->name_string, buflen);
1980  iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1981  (char *)ip_addr, buflen);
1982  iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
1983  (char *)fw_ddb_entry->iscsi_alias, buflen);
1984 }
1985 
1986 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1987  struct ddb_entry *ddb_entry)
1988 {
1989  struct iscsi_cls_session *cls_sess;
1990  struct iscsi_cls_conn *cls_conn;
1991  uint32_t ddb_state;
1992  dma_addr_t fw_ddb_entry_dma;
1993  struct dev_db_entry *fw_ddb_entry;
1994 
1995  fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1996  &fw_ddb_entry_dma, GFP_KERNEL);
1997  if (!fw_ddb_entry) {
1998  ql4_printk(KERN_ERR, ha,
1999  "%s: Unable to allocate dma buffer\n", __func__);
2000  goto exit_session_conn_fwddb_param;
2001  }
2002 
2003  if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2004  fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2005  NULL, NULL, NULL) == QLA_ERROR) {
2006  DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2007  "get_ddb_entry for fw_ddb_index %d\n",
2008  ha->host_no, __func__,
2009  ddb_entry->fw_ddb_index));
2010  goto exit_session_conn_fwddb_param;
2011  }
2012 
2013  cls_sess = ddb_entry->sess;
2014 
2015  cls_conn = ddb_entry->conn;
2016 
2017  /* Update params */
2018  qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2019 
2020 exit_session_conn_fwddb_param:
2021  if (fw_ddb_entry)
2022  dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2023  fw_ddb_entry, fw_ddb_entry_dma);
2024 }
2025 
2026 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2027  struct ddb_entry *ddb_entry)
2028 {
2029  struct iscsi_cls_session *cls_sess;
2030  struct iscsi_cls_conn *cls_conn;
2031  struct iscsi_session *sess;
2032  struct iscsi_conn *conn;
2033  uint32_t ddb_state;
2034  dma_addr_t fw_ddb_entry_dma;
2035  struct dev_db_entry *fw_ddb_entry;
2036 
2037  fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2038  &fw_ddb_entry_dma, GFP_KERNEL);
2039  if (!fw_ddb_entry) {
2040  ql4_printk(KERN_ERR, ha,
2041  "%s: Unable to allocate dma buffer\n", __func__);
2042  goto exit_session_conn_param;
2043  }
2044 
2045  if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2046  fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2047  NULL, NULL, NULL) == QLA_ERROR) {
2048  DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2049  "get_ddb_entry for fw_ddb_index %d\n",
2050  ha->host_no, __func__,
2051  ddb_entry->fw_ddb_index));
2052  goto exit_session_conn_param;
2053  }
2054 
2055  cls_sess = ddb_entry->sess;
2056  sess = cls_sess->dd_data;
2057 
2058  cls_conn = ddb_entry->conn;
2059  conn = cls_conn->dd_data;
2060 
2061  /* Update timers after login */
2062  ddb_entry->default_relogin_timeout =
2063  (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2064  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2065  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2066  ddb_entry->default_time2wait =
2067  le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2068 
2069  /* Update params */
2070  ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2071  conn->max_recv_dlength = BYTE_UNITS *
2072  le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2073 
2074  conn->max_xmit_dlength = BYTE_UNITS *
2075  le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2076 
2077  sess->initial_r2t_en =
2078  (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2079 
2080  sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2081 
2082  sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2083 
2084  sess->first_burst = BYTE_UNITS *
2085  le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2086 
2087  sess->max_burst = BYTE_UNITS *
2088  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2089 
2090  sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2091 
2092  sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2093 
2094  sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2095 
2096  memcpy(sess->initiatorname, ha->name_string,
2097  min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2098 
2099  iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2100  (char *)fw_ddb_entry->iscsi_alias, 0);
2101 
2102 exit_session_conn_param:
2103  if (fw_ddb_entry)
2104  dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2105  fw_ddb_entry, fw_ddb_entry_dma);
2106 }
2107 
2108 /*
2109  * Timer routines
2110  */
2111 
2112 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2113  unsigned long interval)
2114 {
2115  DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2116  __func__, ha->host->host_no));
2117  init_timer(&ha->timer);
2118  ha->timer.expires = jiffies + interval * HZ;
2119  ha->timer.data = (unsigned long)ha;
2120  ha->timer.function = (void (*)(unsigned long))func;
2121  add_timer(&ha->timer);
2122  ha->timer_active = 1;
2123 }
2124 
2125 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2126 {
2127  del_timer_sync(&ha->timer);
2128  ha->timer_active = 0;
2129 }
2130 
2131 /***
2132  * qla4xxx_mark_device_missing - blocks the session
2133  * @cls_session: Pointer to the session to be blocked
2134  * @ddb_entry: Pointer to device database entry
2135  *
2136  * This routine marks a device missing and close connection.
2137  **/
2138 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2139 {
2140  iscsi_block_session(cls_session);
2141 }
2142 
2149 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2150 {
2151  iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2152 }
2153 
2154 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2155  struct ddb_entry *ddb_entry,
2156  struct scsi_cmnd *cmd)
2157 {
2158  struct srb *srb;
2159 
2160  srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2161  if (!srb)
2162  return srb;
2163 
2164  kref_init(&srb->srb_ref);
2165  srb->ha = ha;
2166  srb->ddb = ddb_entry;
2167  srb->cmd = cmd;
2168  srb->flags = 0;
2169  CMD_SP(cmd) = (void *)srb;
2170 
2171  return srb;
2172 }
2173 
2174 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2175 {
2176  struct scsi_cmnd *cmd = srb->cmd;
2177 
2178  if (srb->flags & SRB_DMA_VALID) {
2179  scsi_dma_unmap(cmd);
2180  srb->flags &= ~SRB_DMA_VALID;
2181  }
2182  CMD_SP(cmd) = NULL;
2183 }
2184 
2185 void qla4xxx_srb_compl(struct kref *ref)
2186 {
2187  struct srb *srb = container_of(ref, struct srb, srb_ref);
2188  struct scsi_cmnd *cmd = srb->cmd;
2189  struct scsi_qla_host *ha = srb->ha;
2190 
2191  qla4xxx_srb_free_dma(ha, srb);
2192 
2193  mempool_free(srb, ha->srb_mempool);
2194 
2195  cmd->scsi_done(cmd);
2196 }
2197 
2211 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2212 {
2213  struct scsi_qla_host *ha = to_qla_host(host);
2214  struct ddb_entry *ddb_entry = cmd->device->hostdata;
2215  struct iscsi_cls_session *sess = ddb_entry->sess;
2216  struct srb *srb;
2217  int rval;
2218 
2219  if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2220  if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2221  cmd->result = DID_NO_CONNECT << 16;
2222  else
2223  cmd->result = DID_REQUEUE << 16;
2224  goto qc_fail_command;
2225  }
2226 
2227  if (!sess) {
2228  cmd->result = DID_IMM_RETRY << 16;
2229  goto qc_fail_command;
2230  }
2231 
2232  rval = iscsi_session_chkready(sess);
2233  if (rval) {
2234  cmd->result = rval;
2235  goto qc_fail_command;
2236  }
2237 
2238  if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2239  test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2240  test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2241  test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2242  test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2243  !test_bit(AF_ONLINE, &ha->flags) ||
2244  !test_bit(AF_LINK_UP, &ha->flags) ||
2245  test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2246  goto qc_host_busy;
2247 
2248  srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2249  if (!srb)
2250  goto qc_host_busy;
2251 
2252  rval = qla4xxx_send_command_to_isp(ha, srb);
2253  if (rval != QLA_SUCCESS)
2254  goto qc_host_busy_free_sp;
2255 
2256  return 0;
2257 
2258 qc_host_busy_free_sp:
2259  qla4xxx_srb_free_dma(ha, srb);
2260  mempool_free(srb, ha->srb_mempool);
2261 
2262 qc_host_busy:
2263  return SCSI_MLQUEUE_HOST_BUSY;
2264 
2265 qc_fail_command:
2266  cmd->scsi_done(cmd);
2267 
2268  return 0;
2269 }
2270 
2277 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2278 {
2279  if (ha->queues)
2280  dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2281  ha->queues_dma);
2282 
2283  if (ha->fw_dump)
2284  vfree(ha->fw_dump);
2285 
2286  ha->queues_len = 0;
2287  ha->queues = NULL;
2288  ha->queues_dma = 0;
2289  ha->request_ring = NULL;
2290  ha->request_dma = 0;
2291  ha->response_ring = NULL;
2292  ha->response_dma = 0;
2293  ha->shadow_regs = NULL;
2294  ha->shadow_regs_dma = 0;
2295  ha->fw_dump = NULL;
2296  ha->fw_dump_size = 0;
2297 
2298  /* Free srb pool. */
2299  if (ha->srb_mempool)
2300  mempool_destroy(ha->srb_mempool);
2301 
2302  ha->srb_mempool = NULL;
2303 
2304  if (ha->chap_dma_pool)
2305  dma_pool_destroy(ha->chap_dma_pool);
2306 
2307  if (ha->chap_list)
2308  vfree(ha->chap_list);
2309  ha->chap_list = NULL;
2310 
2311  if (ha->fw_ddb_dma_pool)
2312  dma_pool_destroy(ha->fw_ddb_dma_pool);
2313 
2314  /* release io space registers */
2315  if (is_qla8022(ha)) {
2316  if (ha->nx_pcibase)
2317  iounmap(
2318  (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2319  } else if (is_qla8032(ha)) {
2320  if (ha->nx_pcibase)
2321  iounmap(
2322  (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2323  } else if (ha->reg) {
2324  iounmap(ha->reg);
2325  }
2326 
2327  if (ha->reset_tmplt.buff)
2328  vfree(ha->reset_tmplt.buff);
2329 
2330  pci_release_regions(ha->pdev);
2331 }
2332 
2340 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2341 {
2342  unsigned long align;
2343 
2344  /* Allocate contiguous block of DMA memory for queues. */
2345  ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2346  (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2347  sizeof(struct shadow_regs) +
2348  MEM_ALIGN_VALUE +
2349  (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2350  ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2351  &ha->queues_dma, GFP_KERNEL);
2352  if (ha->queues == NULL) {
2353  ql4_printk(KERN_WARNING, ha,
2354  "Memory Allocation failed - queues.\n");
2355 
2356  goto mem_alloc_error_exit;
2357  }
2358  memset(ha->queues, 0, ha->queues_len);
2359 
2360  /*
2361  * As per RISC alignment requirements -- the bus-address must be a
2362  * multiple of the request-ring size (in bytes).
2363  */
2364  align = 0;
2365  if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2366  align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2367  (MEM_ALIGN_VALUE - 1));
2368 
2369  /* Update request and response queue pointers. */
2370  ha->request_dma = ha->queues_dma + align;
2371  ha->request_ring = (struct queue_entry *) (ha->queues + align);
2372  ha->response_dma = ha->queues_dma + align +
2373  (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2374  ha->response_ring = (struct queue_entry *) (ha->queues + align +
2375  (REQUEST_QUEUE_DEPTH *
2376  QUEUE_SIZE));
2377  ha->shadow_regs_dma = ha->queues_dma + align +
2378  (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2379  (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2380  ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2381  (REQUEST_QUEUE_DEPTH *
2382  QUEUE_SIZE) +
2383  (RESPONSE_QUEUE_DEPTH *
2384  QUEUE_SIZE));
2385 
2386  /* Allocate memory for srb pool. */
2387  ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2388  mempool_free_slab, srb_cachep);
2389  if (ha->srb_mempool == NULL) {
2390  ql4_printk(KERN_WARNING, ha,
2391  "Memory Allocation failed - SRB Pool.\n");
2392 
2393  goto mem_alloc_error_exit;
2394  }
2395 
2396  ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2397  CHAP_DMA_BLOCK_SIZE, 8, 0);
2398 
2399  if (ha->chap_dma_pool == NULL) {
2400  ql4_printk(KERN_WARNING, ha,
2401  "%s: chap_dma_pool allocation failed..\n", __func__);
2402  goto mem_alloc_error_exit;
2403  }
2404 
2405  ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2406  DDB_DMA_BLOCK_SIZE, 8, 0);
2407 
2408  if (ha->fw_ddb_dma_pool == NULL) {
2409  ql4_printk(KERN_WARNING, ha,
2410  "%s: fw_ddb_dma_pool allocation failed..\n",
2411  __func__);
2412  goto mem_alloc_error_exit;
2413  }
2414 
2415  return QLA_SUCCESS;
2416 
2417 mem_alloc_error_exit:
2418  qla4xxx_mem_free(ha);
2419  return QLA_ERROR;
2420 }
2421 
2428 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2429 {
2430  uint32_t temp, temp_state, temp_val;
2431  int status = QLA_SUCCESS;
2432 
2433  temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2434 
2435  temp_state = qla82xx_get_temp_state(temp);
2436  temp_val = qla82xx_get_temp_val(temp);
2437 
2438  if (temp_state == QLA82XX_TEMP_PANIC) {
2439  ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2440  " exceeds maximum allowed. Hardware has been shut"
2441  " down.\n", temp_val);
2442  status = QLA_ERROR;
2443  } else if (temp_state == QLA82XX_TEMP_WARN) {
2444  if (ha->temperature == QLA82XX_TEMP_NORMAL)
2445  ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2446  " degrees C exceeds operating range."
2447  " Immediate action needed.\n", temp_val);
2448  } else {
2449  if (ha->temperature == QLA82XX_TEMP_WARN)
2450  ql4_printk(KERN_INFO, ha, "Device temperature is"
2451  " now %d degrees C in normal range.\n",
2452  temp_val);
2453  }
2454  ha->temperature = temp_state;
2455  return status;
2456 }
2457 
2464 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2465 {
2466  uint32_t fw_heartbeat_counter;
2467  int status = QLA_SUCCESS;
2468 
2469  fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2470  QLA8XXX_PEG_ALIVE_COUNTER);
2471  /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2472  if (fw_heartbeat_counter == 0xffffffff) {
2473  DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2474  "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2475  ha->host_no, __func__));
2476  return status;
2477  }
2478 
2479  if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2480  ha->seconds_since_last_heartbeat++;
2481  /* FW not alive after 2 seconds */
2482  if (ha->seconds_since_last_heartbeat == 2) {
2483  ha->seconds_since_last_heartbeat = 0;
2484  qla4_8xxx_dump_peg_reg(ha);
2485  status = QLA_ERROR;
2486  }
2487  } else
2488  ha->seconds_since_last_heartbeat = 0;
2489 
2490  ha->fw_heartbeat_counter = fw_heartbeat_counter;
2491  return status;
2492 }
2493 
2494 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2495 {
2496  uint32_t halt_status;
2497  int halt_status_unrecoverable = 0;
2498 
2499  halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2500 
2501  if (is_qla8022(ha)) {
2502  ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2503  __func__);
2504  qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2505  CRB_NIU_XG_PAUSE_CTL_P0 |
2506  CRB_NIU_XG_PAUSE_CTL_P1);
2507 
2508  if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2509  ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2510  __func__);
2511  if (halt_status & HALT_STATUS_UNRECOVERABLE)
2512  halt_status_unrecoverable = 1;
2513  } else if (is_qla8032(ha)) {
2514  if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2515  ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2516  __func__);
2517  else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2518  halt_status_unrecoverable = 1;
2519  }
2520 
2521  /*
2522  * Since we cannot change dev_state in interrupt context,
2523  * set appropriate DPC flag then wakeup DPC
2524  */
2525  if (halt_status_unrecoverable) {
2526  set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2527  } else {
2528  ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2529  __func__);
2530  set_bit(DPC_RESET_HA, &ha->dpc_flags);
2531  }
2532  qla4xxx_mailbox_premature_completion(ha);
2533  qla4xxx_wake_dpc(ha);
2534 }
2535 
2542 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2543 {
2544  uint32_t dev_state;
2545 
2546  /* don't poll if reset is going on */
2547  if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2548  test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2549  test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2550  dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2551 
2552  if (qla4_8xxx_check_temp(ha)) {
2553  if (is_qla8022(ha)) {
2554  ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2555  qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2556  CRB_NIU_XG_PAUSE_CTL_P0 |
2557  CRB_NIU_XG_PAUSE_CTL_P1);
2558  }
2559  set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2560  qla4xxx_wake_dpc(ha);
2561  } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2562  !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2563  if (is_qla8032(ha) ||
2564  (is_qla8022(ha) && !ql4xdontresethba)) {
2565  ql4_printk(KERN_INFO, ha, "%s: HW State: "
2566  "NEED RESET!\n", __func__);
2567  set_bit(DPC_RESET_HA, &ha->dpc_flags);
2568  qla4xxx_wake_dpc(ha);
2569  }
2570  } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
2571  !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2572  ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2573  __func__);
2574  set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2575  qla4xxx_wake_dpc(ha);
2576  } else {
2577  /* Check firmware health */
2578  if (qla4_8xxx_check_fw_alive(ha))
2579  qla4_8xxx_process_fw_error(ha);
2580  }
2581  }
2582 }
2583 
2584 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2585 {
2586  struct iscsi_session *sess;
2587  struct ddb_entry *ddb_entry;
2588  struct scsi_qla_host *ha;
2589 
2590  sess = cls_sess->dd_data;
2591  ddb_entry = sess->dd_data;
2592  ha = ddb_entry->ha;
2593 
2594  if (!(ddb_entry->ddb_type == FLASH_DDB))
2595  return;
2596 
2597  if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2598  !iscsi_is_session_online(cls_sess)) {
2599  if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2600  INVALID_ENTRY) {
2601  if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2602  0) {
2603  atomic_set(&ddb_entry->retry_relogin_timer,
2604  INVALID_ENTRY);
2605  set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2606  set_bit(DF_RELOGIN, &ddb_entry->flags);
2607  DEBUG2(ql4_printk(KERN_INFO, ha,
2608  "%s: index [%d] login device\n",
2609  __func__, ddb_entry->fw_ddb_index));
2610  } else
2611  atomic_dec(&ddb_entry->retry_relogin_timer);
2612  }
2613  }
2614 
2615  /* Wait for relogin to timeout */
2616  if (atomic_read(&ddb_entry->relogin_timer) &&
2617  (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2618  /*
2619  * If the relogin times out and the device is
2620  * still NOT ONLINE then try and relogin again.
2621  */
2622  if (!iscsi_is_session_online(cls_sess)) {
2623  /* Reset retry relogin timer */
2624  atomic_inc(&ddb_entry->relogin_retry_count);
2625  DEBUG2(ql4_printk(KERN_INFO, ha,
2626  "%s: index[%d] relogin timed out-retrying"
2627  " relogin (%d), retry (%d)\n", __func__,
2628  ddb_entry->fw_ddb_index,
2629  atomic_read(&ddb_entry->relogin_retry_count),
2630  ddb_entry->default_time2wait + 4));
2631  set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2632  atomic_set(&ddb_entry->retry_relogin_timer,
2633  ddb_entry->default_time2wait + 4);
2634  }
2635  }
2636 }
2637 
2642 static void qla4xxx_timer(struct scsi_qla_host *ha)
2643 {
2644  int start_dpc = 0;
2645  uint16_t w;
2646 
2647  iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2648 
2649  /* If we are in the middle of AER/EEH processing
2650  * skip any processing and reschedule the timer
2651  */
2652  if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2653  mod_timer(&ha->timer, jiffies + HZ);
2654  return;
2655  }
2656 
2657  /* Hardware read to trigger an EEH error during mailbox waits. */
2658  if (!pci_channel_offline(ha->pdev))
2659  pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
2660 
2661  if (is_qla80XX(ha))
2662  qla4_8xxx_watchdog(ha);
2663 
2664  if (is_qla40XX(ha)) {
2665  /* Check for heartbeat interval. */
2666  if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2667  ha->heartbeat_interval != 0) {
2668  ha->seconds_since_last_heartbeat++;
2669  if (ha->seconds_since_last_heartbeat >
2670  ha->heartbeat_interval + 2)
2671  set_bit(DPC_RESET_HA, &ha->dpc_flags);
2672  }
2673  }
2674 
2675  /* Process any deferred work. */
2676  if (!list_empty(&ha->work_list))
2677  start_dpc++;
2678 
2679  /* Wakeup the dpc routine for this adapter, if needed. */
2680  if (start_dpc ||
2681  test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2682  test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2683  test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
2684  test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2685  test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2686  test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
2687  test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
2688  test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2689  test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2690  test_bit(DPC_AEN, &ha->dpc_flags)) {
2691  DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2692  " - dpc flags = 0x%lx\n",
2693  ha->host_no, __func__, ha->dpc_flags));
2694  qla4xxx_wake_dpc(ha);
2695  }
2696 
2697  /* Reschedule timer thread to call us back in one second */
2698  mod_timer(&ha->timer, jiffies + HZ);
2699 
2700  DEBUG2(ha->seconds_since_last_intr++);
2701 }
2702 
2710 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2711 {
2712  uint32_t index = 0;
2713  unsigned long flags;
2714  struct scsi_cmnd *cmd;
2715 
2716  unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2717 
2718  DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2719  "complete\n", WAIT_CMD_TOV));
2720 
2721  while (!time_after_eq(jiffies, wtime)) {
2722  spin_lock_irqsave(&ha->hardware_lock, flags);
2723  /* Find a command that hasn't completed. */
2724  for (index = 0; index < ha->host->can_queue; index++) {
2725  cmd = scsi_host_find_tag(ha->host, index);
2726  /*
2727  * We cannot just check if the index is valid,
2728  * becase if we are run from the scsi eh, then
2729  * the scsi/block layer is going to prevent
2730  * the tag from being released.
2731  */
2732  if (cmd != NULL && CMD_SP(cmd))
2733  break;
2734  }
2735  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2736 
2737  /* If No Commands are pending, wait is complete */
2738  if (index == ha->host->can_queue)
2739  return QLA_SUCCESS;
2740 
2741  msleep(1000);
2742  }
2743  /* If we timed out on waiting for commands to come back
2744  * return ERROR. */
2745  return QLA_ERROR;
2746 }
2747 
2748 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
2749 {
2750  uint32_t ctrl_status;
2751  unsigned long flags = 0;
2752 
2753  DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
2754 
2755  if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2756  return QLA_ERROR;
2757 
2758  spin_lock_irqsave(&ha->hardware_lock, flags);
2759 
2760  /*
2761  * If the SCSI Reset Interrupt bit is set, clear it.
2762  * Otherwise, the Soft Reset won't work.
2763  */
2764  ctrl_status = readw(&ha->reg->ctrl_status);
2765  if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2766  writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2767 
2768  /* Issue Soft Reset */
2769  writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2770  readl(&ha->reg->ctrl_status);
2771 
2772  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2773  return QLA_SUCCESS;
2774 }
2775 
2780 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2781 {
2782  uint32_t max_wait_time;
2783  unsigned long flags = 0;
2784  int status;
2785  uint32_t ctrl_status;
2786 
2787  status = qla4xxx_hw_reset(ha);
2788  if (status != QLA_SUCCESS)
2789  return status;
2790 
2791  status = QLA_ERROR;
2792  /* Wait until the Network Reset Intr bit is cleared */
2793  max_wait_time = RESET_INTR_TOV;
2794  do {
2795  spin_lock_irqsave(&ha->hardware_lock, flags);
2796  ctrl_status = readw(&ha->reg->ctrl_status);
2797  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2798 
2799  if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2800  break;
2801 
2802  msleep(1000);
2803  } while ((--max_wait_time));
2804 
2805  if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2806  DEBUG2(printk(KERN_WARNING
2807  "scsi%ld: Network Reset Intr not cleared by "
2808  "Network function, clearing it now!\n",
2809  ha->host_no));
2810  spin_lock_irqsave(&ha->hardware_lock, flags);
2811  writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2812  readl(&ha->reg->ctrl_status);
2813  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2814  }
2815 
2816  /* Wait until the firmware tells us the Soft Reset is done */
2817  max_wait_time = SOFT_RESET_TOV;
2818  do {
2819  spin_lock_irqsave(&ha->hardware_lock, flags);
2820  ctrl_status = readw(&ha->reg->ctrl_status);
2821  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2822 
2823  if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2824  status = QLA_SUCCESS;
2825  break;
2826  }
2827 
2828  msleep(1000);
2829  } while ((--max_wait_time));
2830 
2831  /*
2832  * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2833  * after the soft reset has taken place.
2834  */
2835  spin_lock_irqsave(&ha->hardware_lock, flags);
2836  ctrl_status = readw(&ha->reg->ctrl_status);
2837  if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2838  writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2839  readl(&ha->reg->ctrl_status);
2840  }
2841  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2842 
2843  /* If soft reset fails then most probably the bios on other
2844  * function is also enabled.
2845  * Since the initialization is sequential the other fn
2846  * wont be able to acknowledge the soft reset.
2847  * Issue a force soft reset to workaround this scenario.
2848  */
2849  if (max_wait_time == 0) {
2850  /* Issue Force Soft Reset */
2851  spin_lock_irqsave(&ha->hardware_lock, flags);
2852  writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2853  readl(&ha->reg->ctrl_status);
2854  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2855  /* Wait until the firmware tells us the Soft Reset is done */
2856  max_wait_time = SOFT_RESET_TOV;
2857  do {
2858  spin_lock_irqsave(&ha->hardware_lock, flags);
2859  ctrl_status = readw(&ha->reg->ctrl_status);
2860  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2861 
2862  if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2863  status = QLA_SUCCESS;
2864  break;
2865  }
2866 
2867  msleep(1000);
2868  } while ((--max_wait_time));
2869  }
2870 
2871  return status;
2872 }
2873 
2884 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
2885 {
2886  struct srb *srb;
2887  int i;
2888  unsigned long flags;
2889 
2890  spin_lock_irqsave(&ha->hardware_lock, flags);
2891  for (i = 0; i < ha->host->can_queue; i++) {
2892  srb = qla4xxx_del_from_active_array(ha, i);
2893  if (srb != NULL) {
2894  srb->cmd->result = res;
2895  kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2896  }
2897  }
2898  spin_unlock_irqrestore(&ha->hardware_lock, flags);
2899 }
2900 
2901 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2902 {
2903  clear_bit(AF_ONLINE, &ha->flags);
2904 
2905  /* Disable the board */
2906  ql4_printk(KERN_INFO, ha, "Disabling the board\n");
2907 
2908  qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2909  qla4xxx_mark_all_devices_missing(ha);
2910  clear_bit(AF_INIT_DONE, &ha->flags);
2911 }
2912 
2913 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2914 {
2915  struct iscsi_session *sess;
2916  struct ddb_entry *ddb_entry;
2917 
2918  sess = cls_session->dd_data;
2919  ddb_entry = sess->dd_data;
2920  ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
2921 
2922  if (ddb_entry->ddb_type == FLASH_DDB)
2923  iscsi_block_session(ddb_entry->sess);
2924  else
2925  iscsi_session_failure(cls_session->dd_data,
2926  ISCSI_ERR_CONN_FAILED);
2927 }
2928 
2933 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
2934 {
2935  int status = QLA_ERROR;
2936  uint8_t reset_chip = 0;
2937  uint32_t dev_state;
2938  unsigned long wait;
2939 
2940  /* Stall incoming I/O until we are done */
2941  scsi_block_requests(ha->host);
2942  clear_bit(AF_ONLINE, &ha->flags);
2943  clear_bit(AF_LINK_UP, &ha->flags);
2944 
2945  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
2946 
2947  set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2948 
2949  if (is_qla8032(ha) &&
2950  !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2951  ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2952  __func__);
2953  /* disable pause frame for ISP83xx */
2954  qla4_83xx_disable_pause(ha);
2955  }
2956 
2957  iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2958 
2959  if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2960  reset_chip = 1;
2961 
2962  /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2963  * do not reset adapter, jump to initialize_adapter */
2964  if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2965  status = QLA_SUCCESS;
2966  goto recover_ha_init_adapter;
2967  }
2968 
2969  /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
2970  * from eh_host_reset or ioctl module */
2971  if (is_qla80XX(ha) && !reset_chip &&
2972  test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2973 
2974  DEBUG2(ql4_printk(KERN_INFO, ha,
2975  "scsi%ld: %s - Performing stop_firmware...\n",
2976  ha->host_no, __func__));
2977  status = ha->isp_ops->reset_firmware(ha);
2978  if (status == QLA_SUCCESS) {
2979  if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2980  qla4xxx_cmd_wait(ha);
2981  ha->isp_ops->disable_intrs(ha);
2982  qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2983  qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2984  } else {
2985  /* If the stop_firmware fails then
2986  * reset the entire chip */
2987  reset_chip = 1;
2988  clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2989  set_bit(DPC_RESET_HA, &ha->dpc_flags);
2990  }
2991  }
2992 
2993  /* Issue full chip reset if recovering from a catastrophic error,
2994  * or if stop_firmware fails for ISP-8xxx.
2995  * This is the default case for ISP-4xxx */
2996  if (is_qla40XX(ha) || reset_chip) {
2997  if (is_qla40XX(ha))
2998  goto chip_reset;
2999 
3000  /* Check if 8XXX firmware is alive or not
3001  * We may have arrived here from NEED_RESET
3002  * detection only */
3003  if (test_bit(AF_FW_RECOVERY, &ha->flags))
3004  goto chip_reset;
3005 
3006  wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3007  while (time_before(jiffies, wait)) {
3008  if (qla4_8xxx_check_fw_alive(ha)) {
3009  qla4xxx_mailbox_premature_completion(ha);
3010  break;
3011  }
3012 
3013  set_current_state(TASK_UNINTERRUPTIBLE);
3014  schedule_timeout(HZ);
3015  }
3016 chip_reset:
3017  if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3018  qla4xxx_cmd_wait(ha);
3019 
3020  qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3021  qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3022  DEBUG2(ql4_printk(KERN_INFO, ha,
3023  "scsi%ld: %s - Performing chip reset..\n",
3024  ha->host_no, __func__));
3025  status = ha->isp_ops->reset_chip(ha);
3026  }
3027 
3028  /* Flush any pending ddb changed AENs */
3029  qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3030 
3031 recover_ha_init_adapter:
3032  /* Upon successful firmware/chip reset, re-initialize the adapter */
3033  if (status == QLA_SUCCESS) {
3034  /* For ISP-4xxx, force function 1 to always initialize
3035  * before function 3 to prevent both funcions from
3036  * stepping on top of the other */
3037  if (is_qla40XX(ha) && (ha->mac_index == 3))
3038  ssleep(6);
3039 
3040  /* NOTE: AF_ONLINE flag set upon successful completion of
3041  * qla4xxx_initialize_adapter */
3042  status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3043  }
3044 
3045  /* Retry failed adapter initialization, if necessary
3046  * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3047  * case to prevent ping-pong resets between functions */
3048  if (!test_bit(AF_ONLINE, &ha->flags) &&
3049  !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3050  /* Adapter initialization failed, see if we can retry
3051  * resetting the ha.
3052  * Since we don't want to block the DPC for too long
3053  * with multiple resets in the same thread,
3054  * utilize DPC to retry */
3055  if (is_qla80XX(ha)) {
3056  ha->isp_ops->idc_lock(ha);
3057  dev_state = qla4_8xxx_rd_direct(ha,
3058  QLA8XXX_CRB_DEV_STATE);
3059  ha->isp_ops->idc_unlock(ha);
3060  if (dev_state == QLA8XXX_DEV_FAILED) {
3061  ql4_printk(KERN_INFO, ha, "%s: don't retry "
3062  "recover adapter. H/W is in Failed "
3063  "state\n", __func__);
3064  qla4xxx_dead_adapter_cleanup(ha);
3065  clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3066  clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3067  clear_bit(DPC_RESET_HA_FW_CONTEXT,
3068  &ha->dpc_flags);
3069  status = QLA_ERROR;
3070 
3071  goto exit_recover;
3072  }
3073  }
3074 
3075  if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3076  ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3077  DEBUG2(printk("scsi%ld: recover adapter - retrying "
3078  "(%d) more times\n", ha->host_no,
3079  ha->retry_reset_ha_cnt));
3080  set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3081  status = QLA_ERROR;
3082  } else {
3083  if (ha->retry_reset_ha_cnt > 0) {
3084  /* Schedule another Reset HA--DPC will retry */
3085  ha->retry_reset_ha_cnt--;
3086  DEBUG2(printk("scsi%ld: recover adapter - "
3087  "retry remaining %d\n",
3088  ha->host_no,
3089  ha->retry_reset_ha_cnt));
3090  status = QLA_ERROR;
3091  }
3092 
3093  if (ha->retry_reset_ha_cnt == 0) {
3094  /* Recover adapter retries have been exhausted.
3095  * Adapter DEAD */
3096  DEBUG2(printk("scsi%ld: recover adapter "
3097  "failed - board disabled\n",
3098  ha->host_no));
3099  qla4xxx_dead_adapter_cleanup(ha);
3100  clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3101  clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3102  clear_bit(DPC_RESET_HA_FW_CONTEXT,
3103  &ha->dpc_flags);
3104  status = QLA_ERROR;
3105  }
3106  }
3107  } else {
3108  clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3109  clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3110  clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3111  }
3112 
3113 exit_recover:
3114  ha->adapter_error_count++;
3115 
3116  if (test_bit(AF_ONLINE, &ha->flags))
3117  ha->isp_ops->enable_intrs(ha);
3118 
3119  scsi_unblock_requests(ha->host);
3120 
3121  clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3122  DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3123  status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3124 
3125  return status;
3126 }
3127 
3128 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3129 {
3130  struct iscsi_session *sess;
3131  struct ddb_entry *ddb_entry;
3132  struct scsi_qla_host *ha;
3133 
3134  sess = cls_session->dd_data;
3135  ddb_entry = sess->dd_data;
3136  ha = ddb_entry->ha;
3137  if (!iscsi_is_session_online(cls_session)) {
3138  if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3139  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3140  " unblock session\n", ha->host_no, __func__,
3141  ddb_entry->fw_ddb_index);
3142  iscsi_unblock_session(ddb_entry->sess);
3143  } else {
3144  /* Trigger relogin */
3145  if (ddb_entry->ddb_type == FLASH_DDB) {
3146  if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3147  qla4xxx_arm_relogin_timer(ddb_entry);
3148  } else
3149  iscsi_session_failure(cls_session->dd_data,
3150  ISCSI_ERR_CONN_FAILED);
3151  }
3152  }
3153 }
3154 
3155 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3156 {
3157  struct iscsi_session *sess;
3158  struct ddb_entry *ddb_entry;
3159  struct scsi_qla_host *ha;
3160 
3161  sess = cls_session->dd_data;
3162  ddb_entry = sess->dd_data;
3163  ha = ddb_entry->ha;
3164  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3165  " unblock session\n", ha->host_no, __func__,
3166  ddb_entry->fw_ddb_index);
3167 
3168  iscsi_unblock_session(ddb_entry->sess);
3169 
3170  /* Start scan target */
3171  if (test_bit(AF_ONLINE, &ha->flags)) {
3172  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3173  " start scan\n", ha->host_no, __func__,
3174  ddb_entry->fw_ddb_index);
3175  scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3176  }
3177  return QLA_SUCCESS;
3178 }
3179 
3180 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3181 {
3182  struct iscsi_session *sess;
3183  struct ddb_entry *ddb_entry;
3184  struct scsi_qla_host *ha;
3185  int status = QLA_SUCCESS;
3186 
3187  sess = cls_session->dd_data;
3188  ddb_entry = sess->dd_data;
3189  ha = ddb_entry->ha;
3190  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3191  " unblock user space session\n", ha->host_no, __func__,
3192  ddb_entry->fw_ddb_index);
3193 
3194  if (!iscsi_is_session_online(cls_session)) {
3195  iscsi_conn_start(ddb_entry->conn);
3196  iscsi_conn_login_event(ddb_entry->conn,
3197  ISCSI_CONN_STATE_LOGGED_IN);
3198  } else {
3199  ql4_printk(KERN_INFO, ha,
3200  "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3201  ha->host_no, __func__, ddb_entry->fw_ddb_index,
3202  cls_session->sid);
3203  status = QLA_ERROR;
3204  }
3205 
3206  return status;
3207 }
3208 
3209 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3210 {
3211  iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3212 }
3213 
3214 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3215 {
3216  uint16_t relogin_timer;
3217  struct iscsi_session *sess;
3218  struct ddb_entry *ddb_entry;
3219  struct scsi_qla_host *ha;
3220 
3221  sess = cls_sess->dd_data;
3222  ddb_entry = sess->dd_data;
3223  ha = ddb_entry->ha;
3224 
3225  relogin_timer = max(ddb_entry->default_relogin_timeout,
3226  (uint16_t)RELOGIN_TOV);
3227  atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3228 
3229  DEBUG2(ql4_printk(KERN_INFO, ha,
3230  "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3231  ddb_entry->fw_ddb_index, relogin_timer));
3232 
3233  qla4xxx_login_flash_ddb(cls_sess);
3234 }
3235 
3236 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3237 {
3238  struct iscsi_session *sess;
3239  struct ddb_entry *ddb_entry;
3240  struct scsi_qla_host *ha;
3241 
3242  sess = cls_sess->dd_data;
3243  ddb_entry = sess->dd_data;
3244  ha = ddb_entry->ha;
3245 
3246  if (!(ddb_entry->ddb_type == FLASH_DDB))
3247  return;
3248 
3249  if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3250  !iscsi_is_session_online(cls_sess)) {
3251  DEBUG2(ql4_printk(KERN_INFO, ha,
3252  "relogin issued\n"));
3253  qla4xxx_relogin_flash_ddb(cls_sess);
3254  }
3255 }
3256 
3257 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3258 {
3259  if (ha->dpc_thread)
3260  queue_work(ha->dpc_thread, &ha->dpc_work);
3261 }
3262 
3263 static struct qla4_work_evt *
3264 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3265  enum qla4_work_type type)
3266 {
3267  struct qla4_work_evt *e;
3268  uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3269 
3270  e = kzalloc(size, GFP_ATOMIC);
3271  if (!e)
3272  return NULL;
3273 
3274  INIT_LIST_HEAD(&e->list);
3275  e->type = type;
3276  return e;
3277 }
3278 
3279 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3280  struct qla4_work_evt *e)
3281 {
3282  unsigned long flags;
3283 
3284  spin_lock_irqsave(&ha->work_lock, flags);
3285  list_add_tail(&e->list, &ha->work_list);
3286  spin_unlock_irqrestore(&ha->work_lock, flags);
3287  qla4xxx_wake_dpc(ha);
3288 }
3289 
3290 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3291  enum iscsi_host_event_code aen_code,
3292  uint32_t data_size, uint8_t *data)
3293 {
3294  struct qla4_work_evt *e;
3295 
3296  e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3297  if (!e)
3298  return QLA_ERROR;
3299 
3300  e->u.aen.code = aen_code;
3301  e->u.aen.data_size = data_size;
3302  memcpy(e->u.aen.data, data, data_size);
3303 
3304  qla4xxx_post_work(ha, e);
3305 
3306  return QLA_SUCCESS;
3307 }
3308 
3309 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3310  uint32_t status, uint32_t pid,
3311  uint32_t data_size, uint8_t *data)
3312 {
3313  struct qla4_work_evt *e;
3314 
3315  e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3316  if (!e)
3317  return QLA_ERROR;
3318 
3319  e->u.ping.status = status;
3320  e->u.ping.pid = pid;
3321  e->u.ping.data_size = data_size;
3322  memcpy(e->u.ping.data, data, data_size);
3323 
3324  qla4xxx_post_work(ha, e);
3325 
3326  return QLA_SUCCESS;
3327 }
3328 
3329 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3330 {
3331  struct qla4_work_evt *e, *tmp;
3332  unsigned long flags;
3333  LIST_HEAD(work);
3334 
3335  spin_lock_irqsave(&ha->work_lock, flags);
3336  list_splice_init(&ha->work_list, &work);
3337  spin_unlock_irqrestore(&ha->work_lock, flags);
3338 
3339  list_for_each_entry_safe(e, tmp, &work, list) {
3340  list_del_init(&e->list);
3341 
3342  switch (e->type) {
3343  case QLA4_EVENT_AEN:
3344  iscsi_post_host_event(ha->host_no,
3345  &qla4xxx_iscsi_transport,
3346  e->u.aen.code,
3347  e->u.aen.data_size,
3348  e->u.aen.data);
3349  break;
3350  case QLA4_EVENT_PING_STATUS:
3351  iscsi_ping_comp_event(ha->host_no,
3352  &qla4xxx_iscsi_transport,
3353  e->u.ping.status,
3354  e->u.ping.pid,
3355  e->u.ping.data_size,
3356  e->u.ping.data);
3357  break;
3358  default:
3359  ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3360  "supported", e->type);
3361  }
3362  kfree(e);
3363  }
3364 }
3365 
3377 static void qla4xxx_do_dpc(struct work_struct *work)
3378 {
3379  struct scsi_qla_host *ha =
3380  container_of(work, struct scsi_qla_host, dpc_work);
3381  int status = QLA_ERROR;
3382 
3383  DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3384  "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3385  ha->host_no, __func__, ha->flags, ha->dpc_flags))
3386 
3387  /* Initialization not yet finished. Don't do anything yet. */
3388  if (!test_bit(AF_INIT_DONE, &ha->flags))
3389  return;
3390 
3391  if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3392  DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3393  ha->host_no, __func__, ha->flags));
3394  return;
3395  }
3396 
3397  /* post events to application */
3398  qla4xxx_do_work(ha);
3399 
3400  if (is_qla80XX(ha)) {
3401  if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3402  if (is_qla8032(ha)) {
3403  ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3404  __func__);
3405  /* disable pause frame for ISP83xx */
3406  qla4_83xx_disable_pause(ha);
3407  }
3408 
3409  ha->isp_ops->idc_lock(ha);
3410  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3411  QLA8XXX_DEV_FAILED);
3412  ha->isp_ops->idc_unlock(ha);
3413  ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3414  qla4_8xxx_device_state_handler(ha);
3415  }
3416 
3417  if (test_and_clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags))
3418  qla4_83xx_post_idc_ack(ha);
3419 
3420  if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3421  qla4_8xxx_need_qsnt_handler(ha);
3422  }
3423  }
3424 
3425  if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3426  (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3427  test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3428  test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3429  if ((is_qla8022(ha) && ql4xdontresethba) ||
3430  (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
3431  DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3432  ha->host_no, __func__));
3433  clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3434  clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3435  clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3436  goto dpc_post_reset_ha;
3437  }
3438  if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3439  test_bit(DPC_RESET_HA, &ha->dpc_flags))
3440  qla4xxx_recover_adapter(ha);
3441 
3442  if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3443  uint8_t wait_time = RESET_INTR_TOV;
3444 
3445  while ((readw(&ha->reg->ctrl_status) &
3446  (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3447  if (--wait_time == 0)
3448  break;
3449  msleep(1000);
3450  }
3451  if (wait_time == 0)
3452  DEBUG2(printk("scsi%ld: %s: SR|FSR "
3453  "bit not cleared-- resetting\n",
3454  ha->host_no, __func__));
3455  qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3456  if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3457  qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3458  status = qla4xxx_recover_adapter(ha);
3459  }
3460  clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3461  if (status == QLA_SUCCESS)
3462  ha->isp_ops->enable_intrs(ha);
3463  }
3464  }
3465 
3466 dpc_post_reset_ha:
3467  /* ---- process AEN? --- */
3468  if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3469  qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3470 
3471  /* ---- Get DHCP IP Address? --- */
3472  if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3473  qla4xxx_get_dhcp_ip_address(ha);
3474 
3475  /* ---- relogin device? --- */
3476  if (adapter_up(ha) &&
3477  test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3478  iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3479  }
3480 
3481  /* ---- link change? --- */
3482  if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3483  if (!test_bit(AF_LINK_UP, &ha->flags)) {
3484  /* ---- link down? --- */
3485  qla4xxx_mark_all_devices_missing(ha);
3486  } else {
3487  /* ---- link up? --- *
3488  * F/W will auto login to all devices ONLY ONCE after
3489  * link up during driver initialization and runtime
3490  * fatal error recovery. Therefore, the driver must
3491  * manually relogin to devices when recovering from
3492  * connection failures, logouts, expired KATO, etc. */
3493  if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3494  qla4xxx_build_ddb_list(ha, ha->is_reset);
3495  iscsi_host_for_each_session(ha->host,
3496  qla4xxx_login_flash_ddb);
3497  } else
3498  qla4xxx_relogin_all_devices(ha);
3499  }
3500  }
3501 }
3502 
3507 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3508 {
3509  qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3510 
3511  if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
3512  /* Turn-off interrupts on the card. */
3513  ha->isp_ops->disable_intrs(ha);
3514  }
3515 
3516  if (is_qla40XX(ha)) {
3517  writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3518  &ha->reg->ctrl_status);
3519  readl(&ha->reg->ctrl_status);
3520  } else if (is_qla8022(ha)) {
3521  writel(0, &ha->qla4_82xx_reg->host_int);
3522  readl(&ha->qla4_82xx_reg->host_int);
3523  } else if (is_qla8032(ha)) {
3524  writel(0, &ha->qla4_83xx_reg->risc_intr);
3525  readl(&ha->qla4_83xx_reg->risc_intr);
3526  }
3527 
3528  /* Remove timer thread, if present */
3529  if (ha->timer_active)
3530  qla4xxx_stop_timer(ha);
3531 
3532  /* Kill the kernel thread for this host */
3533  if (ha->dpc_thread)
3534  destroy_workqueue(ha->dpc_thread);
3535 
3536  /* Kill the kernel thread for this host */
3537  if (ha->task_wq)
3538  destroy_workqueue(ha->task_wq);
3539 
3540  /* Put firmware in known state */
3541  ha->isp_ops->reset_firmware(ha);
3542 
3543  if (is_qla80XX(ha)) {
3544  ha->isp_ops->idc_lock(ha);
3545  qla4_8xxx_clear_drv_active(ha);
3546  ha->isp_ops->idc_unlock(ha);
3547  }
3548 
3549  /* Detach interrupts */
3550  if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
3551  qla4xxx_free_irqs(ha);
3552 
3553  /* free extra memory */
3554  qla4xxx_mem_free(ha);
3555 }
3556 
3557 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3558 {
3559  int status = 0;
3560  unsigned long mem_base, mem_len, db_base, db_len;
3561  struct pci_dev *pdev = ha->pdev;
3562 
3563  status = pci_request_regions(pdev, DRIVER_NAME);
3564  if (status) {
3565  printk(KERN_WARNING
3566  "scsi(%ld) Failed to reserve PIO regions (%s) "
3567  "status=%d\n", ha->host_no, pci_name(pdev), status);
3568  goto iospace_error_exit;
3569  }
3570 
3571  DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3572  __func__, pdev->revision));
3573  ha->revision_id = pdev->revision;
3574 
3575  /* remap phys address */
3576  mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3577  mem_len = pci_resource_len(pdev, 0);
3578  DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3579  __func__, mem_base, mem_len));
3580 
3581  /* mapping of pcibase pointer */
3582  ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3583  if (!ha->nx_pcibase) {
3584  printk(KERN_ERR
3585  "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3586  pci_release_regions(ha->pdev);
3587  goto iospace_error_exit;
3588  }
3589 
3590  /* Mapping of IO base pointer, door bell read and write pointer */
3591 
3592  /* mapping of IO base pointer */
3593  if (is_qla8022(ha)) {
3594  ha->qla4_82xx_reg = (struct device_reg_82xx __iomem *)
3595  ((uint8_t *)ha->nx_pcibase + 0xbc000 +
3596  (ha->pdev->devfn << 11));
3597  ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3598  QLA82XX_CAM_RAM_DB2);
3599  } else if (is_qla8032(ha)) {
3600  ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
3601  ((uint8_t *)ha->nx_pcibase);
3602  }
3603 
3604  db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
3605  db_len = pci_resource_len(pdev, 4);
3606 
3607  return 0;
3608 iospace_error_exit:
3609  return -ENOMEM;
3610 }
3611 
3612 /***
3613  * qla4xxx_iospace_config - maps registers
3614  * @ha: pointer to adapter structure
3615  *
3616  * This routines maps HBA's registers from the pci address space
3617  * into the kernel virtual address space for memory mapped i/o.
3618  **/
3619 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3620 {
3621  unsigned long pio, pio_len, pio_flags;
3622  unsigned long mmio, mmio_len, mmio_flags;
3623 
3624  pio = pci_resource_start(ha->pdev, 0);
3625  pio_len = pci_resource_len(ha->pdev, 0);
3626  pio_flags = pci_resource_flags(ha->pdev, 0);
3627  if (pio_flags & IORESOURCE_IO) {
3628  if (pio_len < MIN_IOBASE_LEN) {
3629  ql4_printk(KERN_WARNING, ha,
3630  "Invalid PCI I/O region size\n");
3631  pio = 0;
3632  }
3633  } else {
3634  ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3635  pio = 0;
3636  }
3637 
3638  /* Use MMIO operations for all accesses. */
3639  mmio = pci_resource_start(ha->pdev, 1);
3640  mmio_len = pci_resource_len(ha->pdev, 1);
3641  mmio_flags = pci_resource_flags(ha->pdev, 1);
3642 
3643  if (!(mmio_flags & IORESOURCE_MEM)) {
3644  ql4_printk(KERN_ERR, ha,
3645  "region #0 not an MMIO resource, aborting\n");
3646 
3647  goto iospace_error_exit;
3648  }
3649 
3650  if (mmio_len < MIN_IOBASE_LEN) {
3651  ql4_printk(KERN_ERR, ha,
3652  "Invalid PCI mem region size, aborting\n");
3653  goto iospace_error_exit;
3654  }
3655 
3656  if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3657  ql4_printk(KERN_WARNING, ha,
3658  "Failed to reserve PIO/MMIO regions\n");
3659 
3660  goto iospace_error_exit;
3661  }
3662 
3663  ha->pio_address = pio;
3664  ha->pio_length = pio_len;
3665  ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3666  if (!ha->reg) {
3667  ql4_printk(KERN_ERR, ha,
3668  "cannot remap MMIO, aborting\n");
3669 
3670  goto iospace_error_exit;
3671  }
3672 
3673  return 0;
3674 
3675 iospace_error_exit:
3676  return -ENOMEM;
3677 }
3678 
3679 static struct isp_operations qla4xxx_isp_ops = {
3680  .iospace_config = qla4xxx_iospace_config,
3681  .pci_config = qla4xxx_pci_config,
3682  .disable_intrs = qla4xxx_disable_intrs,
3683  .enable_intrs = qla4xxx_enable_intrs,
3684  .start_firmware = qla4xxx_start_firmware,
3685  .intr_handler = qla4xxx_intr_handler,
3686  .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3687  .reset_chip = qla4xxx_soft_reset,
3688  .reset_firmware = qla4xxx_hw_reset,
3689  .queue_iocb = qla4xxx_queue_iocb,
3690  .complete_iocb = qla4xxx_complete_iocb,
3691  .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
3692  .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
3693  .get_sys_info = qla4xxx_get_sys_info,
3694  .queue_mailbox_command = qla4xxx_queue_mbox_cmd,
3695  .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
3696 };
3697 
3698 static struct isp_operations qla4_82xx_isp_ops = {
3699  .iospace_config = qla4_8xxx_iospace_config,
3700  .pci_config = qla4_8xxx_pci_config,
3701  .disable_intrs = qla4_82xx_disable_intrs,
3702  .enable_intrs = qla4_82xx_enable_intrs,
3703  .start_firmware = qla4_8xxx_load_risc,
3704  .restart_firmware = qla4_82xx_try_start_fw,
3705  .intr_handler = qla4_82xx_intr_handler,
3706  .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
3707  .need_reset = qla4_8xxx_need_reset,
3708  .reset_chip = qla4_82xx_isp_reset,
3709  .reset_firmware = qla4_8xxx_stop_firmware,
3710  .queue_iocb = qla4_82xx_queue_iocb,
3711  .complete_iocb = qla4_82xx_complete_iocb,
3712  .rd_shdw_req_q_out = qla4_82xx_rd_shdw_req_q_out,
3713  .rd_shdw_rsp_q_in = qla4_82xx_rd_shdw_rsp_q_in,
3714  .get_sys_info = qla4_8xxx_get_sys_info,
3715  .rd_reg_direct = qla4_82xx_rd_32,
3716  .wr_reg_direct = qla4_82xx_wr_32,
3717  .rd_reg_indirect = qla4_82xx_md_rd_32,
3718  .wr_reg_indirect = qla4_82xx_md_wr_32,
3719  .idc_lock = qla4_82xx_idc_lock,
3720  .idc_unlock = qla4_82xx_idc_unlock,
3721  .rom_lock_recovery = qla4_82xx_rom_lock_recovery,
3722  .queue_mailbox_command = qla4_82xx_queue_mbox_cmd,
3723  .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
3724 };
3725 
3726 static struct isp_operations qla4_83xx_isp_ops = {
3727  .iospace_config = qla4_8xxx_iospace_config,
3728  .pci_config = qla4_8xxx_pci_config,
3729  .disable_intrs = qla4_83xx_disable_intrs,
3730  .enable_intrs = qla4_83xx_enable_intrs,
3731  .start_firmware = qla4_8xxx_load_risc,
3732  .restart_firmware = qla4_83xx_start_firmware,
3733  .intr_handler = qla4_83xx_intr_handler,
3734  .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
3735  .need_reset = qla4_8xxx_need_reset,
3736  .reset_chip = qla4_83xx_isp_reset,
3737  .reset_firmware = qla4_8xxx_stop_firmware,
3738  .queue_iocb = qla4_83xx_queue_iocb,
3739  .complete_iocb = qla4_83xx_complete_iocb,
3740  .rd_shdw_req_q_out = qla4_83xx_rd_shdw_req_q_out,
3741  .rd_shdw_rsp_q_in = qla4_83xx_rd_shdw_rsp_q_in,
3742  .get_sys_info = qla4_8xxx_get_sys_info,
3743  .rd_reg_direct = qla4_83xx_rd_reg,
3744  .wr_reg_direct = qla4_83xx_wr_reg,
3745  .rd_reg_indirect = qla4_83xx_rd_reg_indirect,
3746  .wr_reg_indirect = qla4_83xx_wr_reg_indirect,
3747  .idc_lock = qla4_83xx_drv_lock,
3748  .idc_unlock = qla4_83xx_drv_unlock,
3749  .rom_lock_recovery = qla4_83xx_rom_lock_recovery,
3750  .queue_mailbox_command = qla4_83xx_queue_mbox_cmd,
3751  .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
3752 };
3753 
3754 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3755 {
3756  return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3757 }
3758 
3759 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3760 {
3761  return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
3762 }
3763 
3764 uint16_t qla4_83xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3765 {
3766  return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->req_q_out));
3767 }
3768 
3769 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3770 {
3771  return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3772 }
3773 
3774 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3775 {
3776  return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
3777 }
3778 
3779 uint16_t qla4_83xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3780 {
3781  return (uint16_t)le32_to_cpu(readl(&ha->qla4_83xx_reg->rsp_q_in));
3782 }
3783 
3784 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3785 {
3786  struct scsi_qla_host *ha = data;
3787  char *str = buf;
3788  int rc;
3789 
3790  switch (type) {
3791  case ISCSI_BOOT_ETH_FLAGS:
3792  rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3793  break;
3794  case ISCSI_BOOT_ETH_INDEX:
3795  rc = sprintf(str, "0\n");
3796  break;
3797  case ISCSI_BOOT_ETH_MAC:
3798  rc = sysfs_format_mac(str, ha->my_mac,
3799  MAC_ADDR_LEN);
3800  break;
3801  default:
3802  rc = -ENOSYS;
3803  break;
3804  }
3805  return rc;
3806 }
3807 
3808 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3809 {
3810  int rc;
3811 
3812  switch (type) {
3813  case ISCSI_BOOT_ETH_FLAGS:
3814  case ISCSI_BOOT_ETH_MAC:
3815  case ISCSI_BOOT_ETH_INDEX:
3816  rc = S_IRUGO;
3817  break;
3818  default:
3819  rc = 0;
3820  break;
3821  }
3822  return rc;
3823 }
3824 
3825 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3826 {
3827  struct scsi_qla_host *ha = data;
3828  char *str = buf;
3829  int rc;
3830 
3831  switch (type) {
3832  case ISCSI_BOOT_INI_INITIATOR_NAME:
3833  rc = sprintf(str, "%s\n", ha->name_string);
3834  break;
3835  default:
3836  rc = -ENOSYS;
3837  break;
3838  }
3839  return rc;
3840 }
3841 
3842 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3843 {
3844  int rc;
3845 
3846  switch (type) {
3847  case ISCSI_BOOT_INI_INITIATOR_NAME:
3848  rc = S_IRUGO;
3849  break;
3850  default:
3851  rc = 0;
3852  break;
3853  }
3854  return rc;
3855 }
3856 
3857 static ssize_t
3858 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3859  char *buf)
3860 {
3861  struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3862  char *str = buf;
3863  int rc;
3864 
3865  switch (type) {
3866  case ISCSI_BOOT_TGT_NAME:
3867  rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3868  break;
3869  case ISCSI_BOOT_TGT_IP_ADDR:
3870  if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3871  rc = sprintf(buf, "%pI4\n",
3872  &boot_conn->dest_ipaddr.ip_address);
3873  else
3874  rc = sprintf(str, "%pI6\n",
3875  &boot_conn->dest_ipaddr.ip_address);
3876  break;
3877  case ISCSI_BOOT_TGT_PORT:
3878  rc = sprintf(str, "%d\n", boot_conn->dest_port);
3879  break;
3880  case ISCSI_BOOT_TGT_CHAP_NAME:
3881  rc = sprintf(str, "%.*s\n",
3882  boot_conn->chap.target_chap_name_length,
3883  (char *)&boot_conn->chap.target_chap_name);
3884  break;
3885  case ISCSI_BOOT_TGT_CHAP_SECRET:
3886  rc = sprintf(str, "%.*s\n",
3887  boot_conn->chap.target_secret_length,
3888  (char *)&boot_conn->chap.target_secret);
3889  break;
3890  case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3891  rc = sprintf(str, "%.*s\n",
3892  boot_conn->chap.intr_chap_name_length,
3893  (char *)&boot_conn->chap.intr_chap_name);
3894  break;
3895  case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3896  rc = sprintf(str, "%.*s\n",
3897  boot_conn->chap.intr_secret_length,
3898  (char *)&boot_conn->chap.intr_secret);
3899  break;
3900  case ISCSI_BOOT_TGT_FLAGS:
3901  rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3902  break;
3903  case ISCSI_BOOT_TGT_NIC_ASSOC:
3904  rc = sprintf(str, "0\n");
3905  break;
3906  default:
3907  rc = -ENOSYS;
3908  break;
3909  }
3910  return rc;
3911 }
3912 
3913 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3914 {
3915  struct scsi_qla_host *ha = data;
3916  struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3917 
3918  return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3919 }
3920 
3921 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3922 {
3923  struct scsi_qla_host *ha = data;
3924  struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3925 
3926  return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3927 }
3928 
3929 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3930 {
3931  int rc;
3932 
3933  switch (type) {
3934  case ISCSI_BOOT_TGT_NAME:
3935  case ISCSI_BOOT_TGT_IP_ADDR:
3936  case ISCSI_BOOT_TGT_PORT:
3937  case ISCSI_BOOT_TGT_CHAP_NAME:
3938  case ISCSI_BOOT_TGT_CHAP_SECRET:
3939  case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3940  case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3941  case ISCSI_BOOT_TGT_NIC_ASSOC:
3942  case ISCSI_BOOT_TGT_FLAGS:
3943  rc = S_IRUGO;
3944  break;
3945  default:
3946  rc = 0;
3947  break;
3948  }
3949  return rc;
3950 }
3951 
3952 static void qla4xxx_boot_release(void *data)
3953 {
3954  struct scsi_qla_host *ha = data;
3955 
3956  scsi_host_put(ha->host);
3957 }
3958 
3959 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3960 {
3961  dma_addr_t buf_dma;
3962  uint32_t addr, pri_addr, sec_addr;
3963  uint32_t offset;
3964  uint16_t func_num;
3965  uint8_t val;
3966  uint8_t *buf = NULL;
3967  size_t size = 13 * sizeof(uint8_t);
3968  int ret = QLA_SUCCESS;
3969 
3970  func_num = PCI_FUNC(ha->pdev->devfn);
3971 
3972  ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3973  __func__, ha->pdev->device, func_num);
3974 
3975  if (is_qla40XX(ha)) {
3976  if (func_num == 1) {
3977  addr = NVRAM_PORT0_BOOT_MODE;
3978  pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3979  sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3980  } else if (func_num == 3) {
3981  addr = NVRAM_PORT1_BOOT_MODE;
3982  pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3983  sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3984  } else {
3985  ret = QLA_ERROR;
3986  goto exit_boot_info;
3987  }
3988 
3989  /* Check Boot Mode */
3990  val = rd_nvram_byte(ha, addr);
3991  if (!(val & 0x07)) {
3992  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
3993  "options : 0x%x\n", __func__, val));
3994  ret = QLA_ERROR;
3995  goto exit_boot_info;
3996  }
3997 
3998  /* get primary valid target index */
3999  val = rd_nvram_byte(ha, pri_addr);
4000  if (val & BIT_7)
4001  ddb_index[0] = (val & 0x7f);
4002 
4003  /* get secondary valid target index */
4004  val = rd_nvram_byte(ha, sec_addr);
4005  if (val & BIT_7)
4006  ddb_index[1] = (val & 0x7f);
4007 
4008  } else if (is_qla8022(ha)) {
4009  buf = dma_alloc_coherent(&ha->pdev->dev, size,
4010  &buf_dma, GFP_KERNEL);
4011  if (!buf) {
4012  DEBUG2(ql4_printk(KERN_ERR, ha,
4013  "%s: Unable to allocate dma buffer\n",
4014  __func__));
4015  ret = QLA_ERROR;
4016  goto exit_boot_info;
4017  }
4018 
4019  if (ha->port_num == 0)
4020  offset = BOOT_PARAM_OFFSET_PORT0;
4021  else if (ha->port_num == 1)
4022  offset = BOOT_PARAM_OFFSET_PORT1;
4023  else {
4024  ret = QLA_ERROR;
4025  goto exit_boot_info_free;
4026  }
4027  addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4028  offset;
4029  if (qla4xxx_get_flash(ha, buf_dma, addr,
4030  13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4031  DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4032  " failed\n", ha->host_no, __func__));
4033  ret = QLA_ERROR;
4034  goto exit_boot_info_free;
4035  }
4036  /* Check Boot Mode */
4037  if (!(buf[1] & 0x07)) {
4038  DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4039  " : 0x%x\n", buf[1]));
4040  ret = QLA_ERROR;
4041  goto exit_boot_info_free;
4042  }
4043 
4044  /* get primary valid target index */
4045  if (buf[2] & BIT_7)
4046  ddb_index[0] = buf[2] & 0x7f;
4047 
4048  /* get secondary valid target index */
4049  if (buf[11] & BIT_7)
4050  ddb_index[1] = buf[11] & 0x7f;
4051  } else {
4052  ret = QLA_ERROR;
4053  goto exit_boot_info;
4054  }
4055 
4056  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4057  " target ID %d\n", __func__, ddb_index[0],
4058  ddb_index[1]));
4059 
4060 exit_boot_info_free:
4061  dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4062 exit_boot_info:
4063  ha->pri_ddb_idx = ddb_index[0];
4064  ha->sec_ddb_idx = ddb_index[1];
4065  return ret;
4066 }
4067 
4079 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4080  char *password)
4081 {
4082  int i, ret = -EINVAL;
4083  int max_chap_entries = 0;
4084  struct ql4_chap_table *chap_table;
4085 
4086  if (is_qla8022(ha))
4087  max_chap_entries = (ha->hw.flt_chap_size / 2) /
4088  sizeof(struct ql4_chap_table);
4089  else
4090  max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4091 
4092  if (!ha->chap_list) {
4093  ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4094  return ret;
4095  }
4096 
4097  mutex_lock(&ha->chap_sem);
4098  for (i = 0; i < max_chap_entries; i++) {
4099  chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4100  if (chap_table->cookie !=
4101  __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4102  continue;
4103  }
4104 
4105  if (chap_table->flags & BIT_7) /* local */
4106  continue;
4107 
4108  if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4109  continue;
4110 
4111  strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4112  strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4113  ret = 0;
4114  break;
4115  }
4116  mutex_unlock(&ha->chap_sem);
4117 
4118  return ret;
4119 }
4120 
4121 
4122 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4123  struct ql4_boot_session_info *boot_sess,
4124  uint16_t ddb_index)
4125 {
4126  struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4127  struct dev_db_entry *fw_ddb_entry;
4128  dma_addr_t fw_ddb_entry_dma;
4129  uint16_t idx;
4130  uint16_t options;
4131  int ret = QLA_SUCCESS;
4132 
4133  fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4134  &fw_ddb_entry_dma, GFP_KERNEL);
4135  if (!fw_ddb_entry) {
4136  DEBUG2(ql4_printk(KERN_ERR, ha,
4137  "%s: Unable to allocate dma buffer.\n",
4138  __func__));
4139  ret = QLA_ERROR;
4140  return ret;
4141  }
4142 
4143  if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4144  fw_ddb_entry_dma, ddb_index)) {
4145  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4146  "index [%d]\n", __func__, ddb_index));
4147  ret = QLA_ERROR;
4148  goto exit_boot_target;
4149  }
4150 
4151  /* Update target name and IP from DDB */
4152  memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4153  min(sizeof(boot_sess->target_name),
4154  sizeof(fw_ddb_entry->iscsi_name)));
4155 
4156  options = le16_to_cpu(fw_ddb_entry->options);
4157  if (options & DDB_OPT_IPV6_DEVICE) {
4158  memcpy(&boot_conn->dest_ipaddr.ip_address,
4159  &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4160  } else {
4161  boot_conn->dest_ipaddr.ip_type = 0x1;
4162  memcpy(&boot_conn->dest_ipaddr.ip_address,
4163  &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4164  }
4165 
4166  boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4167 
4168  /* update chap information */
4169  idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4170 
4171  if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4172 
4173  DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4174 
4175  ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4176  target_chap_name,
4177  (char *)&boot_conn->chap.target_secret,
4178  idx);
4179  if (ret) {
4180  ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4181  ret = QLA_ERROR;
4182  goto exit_boot_target;
4183  }
4184 
4185  boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4186  boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4187  }
4188 
4189  if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4190 
4191  DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4192 
4193  ret = qla4xxx_get_bidi_chap(ha,
4194  (char *)&boot_conn->chap.intr_chap_name,
4195  (char *)&boot_conn->chap.intr_secret);
4196 
4197  if (ret) {
4198  ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4199  ret = QLA_ERROR;
4200  goto exit_boot_target;
4201  }
4202 
4203  boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4204  boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4205  }
4206 
4207 exit_boot_target:
4208  dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4209  fw_ddb_entry, fw_ddb_entry_dma);
4210  return ret;
4211 }
4212 
4213 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4214 {
4215  uint16_t ddb_index[2];
4216  int ret = QLA_ERROR;
4217  int rval;
4218 
4219  memset(ddb_index, 0, sizeof(ddb_index));
4220  ddb_index[0] = 0xffff;
4221  ddb_index[1] = 0xffff;
4222  ret = get_fw_boot_info(ha, ddb_index);
4223  if (ret != QLA_SUCCESS) {
4224  DEBUG2(ql4_printk(KERN_INFO, ha,
4225  "%s: No boot target configured.\n", __func__));
4226  return ret;
4227  }
4228 
4229  if (ql4xdisablesysfsboot)
4230  return QLA_SUCCESS;
4231 
4232  if (ddb_index[0] == 0xffff)
4233  goto sec_target;
4234 
4235  rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4236  ddb_index[0]);
4237  if (rval != QLA_SUCCESS) {
4238  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4239  "configured\n", __func__));
4240  } else
4241  ret = QLA_SUCCESS;
4242 
4243 sec_target:
4244  if (ddb_index[1] == 0xffff)
4245  goto exit_get_boot_info;
4246 
4247  rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4248  ddb_index[1]);
4249  if (rval != QLA_SUCCESS) {
4250  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4251  " configured\n", __func__));
4252  } else
4253  ret = QLA_SUCCESS;
4254 
4255 exit_get_boot_info:
4256  return ret;
4257 }
4258 
4259 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4260 {
4261  struct iscsi_boot_kobj *boot_kobj;
4262 
4263  if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4264  return QLA_ERROR;
4265 
4266  if (ql4xdisablesysfsboot) {
4267  ql4_printk(KERN_INFO, ha,
4268  "%s: syfsboot disabled - driver will trigger login "
4269  "and publish session for discovery .\n", __func__);
4270  return QLA_SUCCESS;
4271  }
4272 
4273 
4274  ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4275  if (!ha->boot_kset)
4276  goto kset_free;
4277 
4278  if (!scsi_host_get(ha->host))
4279  goto kset_free;
4280  boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4281  qla4xxx_show_boot_tgt_pri_info,
4282  qla4xxx_tgt_get_attr_visibility,
4283  qla4xxx_boot_release);
4284  if (!boot_kobj)
4285  goto put_host;
4286 
4287  if (!scsi_host_get(ha->host))
4288  goto kset_free;
4289  boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4290  qla4xxx_show_boot_tgt_sec_info,
4291  qla4xxx_tgt_get_attr_visibility,
4292  qla4xxx_boot_release);
4293  if (!boot_kobj)
4294  goto put_host;
4295 
4296  if (!scsi_host_get(ha->host))
4297  goto kset_free;
4298  boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4299  qla4xxx_show_boot_ini_info,
4300  qla4xxx_ini_get_attr_visibility,
4301  qla4xxx_boot_release);
4302  if (!boot_kobj)
4303  goto put_host;
4304 
4305  if (!scsi_host_get(ha->host))
4306  goto kset_free;
4307  boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4308  qla4xxx_show_boot_eth_info,
4309  qla4xxx_eth_get_attr_visibility,
4310  qla4xxx_boot_release);
4311  if (!boot_kobj)
4312  goto put_host;
4313 
4314  return QLA_SUCCESS;
4315 
4316 put_host:
4317  scsi_host_put(ha->host);
4318 kset_free:
4319  iscsi_boot_destroy_kset(ha->boot_kset);
4320  return -ENOMEM;
4321 }
4322 
4323 
4334 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4335 {
4336  int rval = 0;
4337  uint8_t *chap_flash_data = NULL;
4338  uint32_t offset;
4339  dma_addr_t chap_dma;
4340  uint32_t chap_size = 0;
4341 
4342  if (is_qla40XX(ha))
4343  chap_size = MAX_CHAP_ENTRIES_40XX *
4344  sizeof(struct ql4_chap_table);
4345  else /* Single region contains CHAP info for both
4346  * ports which is divided into half for each port.
4347  */
4348  chap_size = ha->hw.flt_chap_size / 2;
4349 
4350  chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4351  &chap_dma, GFP_KERNEL);
4352  if (!chap_flash_data) {
4353  ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4354  return;
4355  }
4356  if (is_qla40XX(ha))
4357  offset = FLASH_CHAP_OFFSET;
4358  else {
4359  offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4360  if (ha->port_num == 1)
4361  offset += chap_size;
4362  }
4363 
4364  rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4365  if (rval != QLA_SUCCESS)
4366  goto exit_chap_list;
4367 
4368  if (ha->chap_list == NULL)
4369  ha->chap_list = vmalloc(chap_size);
4370  if (ha->chap_list == NULL) {
4371  ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4372  goto exit_chap_list;
4373  }
4374 
4375  memcpy(ha->chap_list, chap_flash_data, chap_size);
4376 
4377 exit_chap_list:
4378  dma_free_coherent(&ha->pdev->dev, chap_size,
4379  chap_flash_data, chap_dma);
4380 }
4381 
4382 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4383  struct ql4_tuple_ddb *tddb)
4384 {
4385  struct scsi_qla_host *ha;
4386  struct iscsi_cls_session *cls_sess;
4387  struct iscsi_cls_conn *cls_conn;
4388  struct iscsi_session *sess;
4389  struct iscsi_conn *conn;
4390 
4391  DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4392  ha = ddb_entry->ha;
4393  cls_sess = ddb_entry->sess;
4394  sess = cls_sess->dd_data;
4395  cls_conn = ddb_entry->conn;
4396  conn = cls_conn->dd_data;
4397 
4398  tddb->tpgt = sess->tpgt;
4399  tddb->port = conn->persistent_port;
4400  strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4401  strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4402 }
4403 
4404 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4405  struct ql4_tuple_ddb *tddb,
4406  uint8_t *flash_isid)
4407 {
4408  uint16_t options = 0;
4409 
4410  tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4411  memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4412  min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4413 
4414  options = le16_to_cpu(fw_ddb_entry->options);
4415  if (options & DDB_OPT_IPV6_DEVICE)
4416  sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4417  else
4418  sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4419 
4420  tddb->port = le16_to_cpu(fw_ddb_entry->port);
4421 
4422  if (flash_isid == NULL)
4423  memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4424  sizeof(tddb->isid));
4425  else
4426  memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4427 }
4428 
4429 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4430  struct ql4_tuple_ddb *old_tddb,
4431  struct ql4_tuple_ddb *new_tddb,
4432  uint8_t is_isid_compare)
4433 {
4434  if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4435  return QLA_ERROR;
4436 
4437  if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4438  return QLA_ERROR;
4439 
4440  if (old_tddb->port != new_tddb->port)
4441  return QLA_ERROR;
4442 
4443  /* For multi sessions, driver generates the ISID, so do not compare
4444  * ISID in reset path since it would be a comparison between the
4445  * driver generated ISID and firmware generated ISID. This could
4446  * lead to adding duplicated DDBs in the list as driver generated
4447  * ISID would not match firmware generated ISID.
4448  */
4449  if (is_isid_compare) {
4450  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4451  "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4452  __func__, old_tddb->isid[5], old_tddb->isid[4],
4453  old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4454  old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4455  new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4456  new_tddb->isid[0]));
4457 
4458  if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4459  sizeof(old_tddb->isid)))
4460  return QLA_ERROR;
4461  }
4462 
4463  DEBUG2(ql4_printk(KERN_INFO, ha,
4464  "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4465  old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4466  old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4467  new_tddb->ip_addr, new_tddb->iscsi_name));
4468 
4469  return QLA_SUCCESS;
4470 }
4471 
4472 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4473  struct dev_db_entry *fw_ddb_entry)
4474 {
4475  struct ddb_entry *ddb_entry;
4476  struct ql4_tuple_ddb *fw_tddb = NULL;
4477  struct ql4_tuple_ddb *tmp_tddb = NULL;
4478  int idx;
4479  int ret = QLA_ERROR;
4480 
4481  fw_tddb = vzalloc(sizeof(*fw_tddb));
4482  if (!fw_tddb) {
4483  DEBUG2(ql4_printk(KERN_WARNING, ha,
4484  "Memory Allocation failed.\n"));
4485  ret = QLA_SUCCESS;
4486  goto exit_check;
4487  }
4488 
4489  tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4490  if (!tmp_tddb) {
4491  DEBUG2(ql4_printk(KERN_WARNING, ha,
4492  "Memory Allocation failed.\n"));
4493  ret = QLA_SUCCESS;
4494  goto exit_check;
4495  }
4496 
4497  qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4498 
4499  for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4500  ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4501  if (ddb_entry == NULL)
4502  continue;
4503 
4504  qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4505  if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4506  ret = QLA_SUCCESS; /* found */
4507  goto exit_check;
4508  }
4509  }
4510 
4511 exit_check:
4512  if (fw_tddb)
4513  vfree(fw_tddb);
4514  if (tmp_tddb)
4515  vfree(tmp_tddb);
4516  return ret;
4517 }
4518 
4527 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4528 {
4529  struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4530  struct dev_db_entry *fw_ddb_entry;
4531 
4532  list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4533  fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4534 
4535  if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4536  sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4537  return QLA_SUCCESS;
4538  }
4539  }
4540  return QLA_ERROR;
4541 }
4542 
4553 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4554  struct list_head *list_nt,
4555  struct dev_db_entry *fw_ddb_entry)
4556 {
4557  uint8_t base_value, i;
4558 
4559  base_value = fw_ddb_entry->isid[1] & 0x1f;
4560  for (i = 0; i < 8; i++) {
4561  fw_ddb_entry->isid[1] = (base_value | (i << 5));
4562  if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4563  break;
4564  }
4565 
4566  if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4567  return QLA_ERROR;
4568 
4569  return QLA_SUCCESS;
4570 }
4571 
4581 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4582  struct ql4_tuple_ddb *old_tddb,
4583  struct ql4_tuple_ddb *new_tddb)
4584 {
4585  if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4586  /* Same ip */
4587  if (old_tddb->port == new_tddb->port)
4588  return QLA_ERROR;
4589  }
4590 
4591  if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4592  /* different iqn */
4593  return QLA_ERROR;
4594 
4595  if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4596  sizeof(old_tddb->isid)))
4597  /* different isid */
4598  return QLA_ERROR;
4599 
4600  return QLA_SUCCESS;
4601 }
4602 
4615 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4616  struct list_head *list_nt,
4617  struct dev_db_entry *fw_ddb_entry)
4618 {
4619  struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4620  struct ql4_tuple_ddb *fw_tddb = NULL;
4621  struct ql4_tuple_ddb *tmp_tddb = NULL;
4622  int rval, ret = QLA_ERROR;
4623 
4624  fw_tddb = vzalloc(sizeof(*fw_tddb));
4625  if (!fw_tddb) {
4626  DEBUG2(ql4_printk(KERN_WARNING, ha,
4627  "Memory Allocation failed.\n"));
4628  ret = QLA_SUCCESS;
4629  goto exit_check;
4630  }
4631 
4632  tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4633  if (!tmp_tddb) {
4634  DEBUG2(ql4_printk(KERN_WARNING, ha,
4635  "Memory Allocation failed.\n"));
4636  ret = QLA_SUCCESS;
4637  goto exit_check;
4638  }
4639 
4640  qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4641 
4642  list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4643  qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4644  nt_ddb_idx->flash_isid);
4645  ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4646  /* found duplicate ddb */
4647  if (ret == QLA_SUCCESS)
4648  goto exit_check;
4649  }
4650 
4651  list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4652  qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4653 
4654  ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4655  if (ret == QLA_SUCCESS) {
4656  rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4657  if (rval == QLA_SUCCESS)
4658  ret = QLA_ERROR;
4659  else
4660  ret = QLA_SUCCESS;
4661 
4662  goto exit_check;
4663  }
4664  }
4665 
4666 exit_check:
4667  if (fw_tddb)
4668  vfree(fw_tddb);
4669  if (tmp_tddb)
4670  vfree(tmp_tddb);
4671  return ret;
4672 }
4673 
4674 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
4675 {
4676  struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
4677 
4678  list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4679  list_del_init(&ddb_idx->list);
4680  vfree(ddb_idx);
4681  }
4682 }
4683 
4684 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
4685  struct dev_db_entry *fw_ddb_entry)
4686 {
4687  struct iscsi_endpoint *ep;
4688  struct sockaddr_in *addr;
4689  struct sockaddr_in6 *addr6;
4690  struct sockaddr *dst_addr;
4691  char *ip;
4692 
4693  /* TODO: need to destroy on unload iscsi_endpoint*/
4694  dst_addr = vmalloc(sizeof(*dst_addr));
4695  if (!dst_addr)
4696  return NULL;
4697 
4698  if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
4699  dst_addr->sa_family = AF_INET6;
4700  addr6 = (struct sockaddr_in6 *)dst_addr;
4701  ip = (char *)&addr6->sin6_addr;
4702  memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
4703  addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
4704 
4705  } else {
4706  dst_addr->sa_family = AF_INET;
4707  addr = (struct sockaddr_in *)dst_addr;
4708  ip = (char *)&addr->sin_addr;
4709  memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
4710  addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
4711  }
4712 
4713  ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
4714  vfree(dst_addr);
4715  return ep;
4716 }
4717 
4718 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
4719 {
4720  if (ql4xdisablesysfsboot)
4721  return QLA_SUCCESS;
4722  if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
4723  return QLA_ERROR;
4724  return QLA_SUCCESS;
4725 }
4726 
4727 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
4728  struct ddb_entry *ddb_entry)
4729 {
4730  uint16_t def_timeout;
4731 
4732  ddb_entry->ddb_type = FLASH_DDB;
4733  ddb_entry->fw_ddb_index = INVALID_ENTRY;
4734  ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
4735  ddb_entry->ha = ha;
4736  ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
4737  ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
4738 
4739  atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
4740  atomic_set(&ddb_entry->relogin_timer, 0);
4741  atomic_set(&ddb_entry->relogin_retry_count, 0);
4742  def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
4743  ddb_entry->default_relogin_timeout =
4744  (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
4745  def_timeout : LOGIN_TOV;
4746  ddb_entry->default_time2wait =
4747  le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
4748 }
4749 
4750 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
4751 {
4752  uint32_t idx = 0;
4753  uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
4754  uint32_t sts[MBOX_REG_COUNT];
4755  uint32_t ip_state;
4756  unsigned long wtime;
4757  int ret;
4758 
4759  wtime = jiffies + (HZ * IP_CONFIG_TOV);
4760  do {
4761  for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
4762  if (ip_idx[idx] == -1)
4763  continue;
4764 
4765  ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
4766 
4767  if (ret == QLA_ERROR) {
4768  ip_idx[idx] = -1;
4769  continue;
4770  }
4771 
4772  ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
4773 
4774  DEBUG2(ql4_printk(KERN_INFO, ha,
4775  "Waiting for IP state for idx = %d, state = 0x%x\n",
4776  ip_idx[idx], ip_state));
4777  if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
4778  ip_state == IP_ADDRSTATE_INVALID ||
4779  ip_state == IP_ADDRSTATE_PREFERRED ||
4780  ip_state == IP_ADDRSTATE_DEPRICATED ||
4781  ip_state == IP_ADDRSTATE_DISABLING)
4782  ip_idx[idx] = -1;
4783  }
4784 
4785  /* Break if all IP states checked */
4786  if ((ip_idx[0] == -1) &&
4787  (ip_idx[1] == -1) &&
4788  (ip_idx[2] == -1) &&
4789  (ip_idx[3] == -1))
4790  break;
4791  schedule_timeout_uninterruptible(HZ);
4792  } while (time_after(wtime, jiffies));
4793 }
4794 
4795 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4796  struct list_head *list_st)
4797 {
4798  struct qla_ddb_index *st_ddb_idx;
4799  int max_ddbs;
4800  int fw_idx_size;
4801  struct dev_db_entry *fw_ddb_entry;
4802  dma_addr_t fw_ddb_dma;
4803  int ret;
4804  uint32_t idx = 0, next_idx = 0;
4805  uint32_t state = 0, conn_err = 0;
4806  uint16_t conn_id = 0;
4807 
4808  fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4809  &fw_ddb_dma);
4810  if (fw_ddb_entry == NULL) {
4811  DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4812  goto exit_st_list;
4813  }
4814 
4815  max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4816  MAX_DEV_DB_ENTRIES;
4817  fw_idx_size = sizeof(struct qla_ddb_index);
4818 
4819  for (idx = 0; idx < max_ddbs; idx = next_idx) {
4820  ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4821  NULL, &next_idx, &state,
4822  &conn_err, NULL, &conn_id);
4823  if (ret == QLA_ERROR)
4824  break;
4825 
4826  /* Ignore DDB if invalid state (unassigned) */
4827  if (state == DDB_DS_UNASSIGNED)
4828  goto continue_next_st;
4829 
4830  /* Check if ST, add to the list_st */
4831  if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4832  goto continue_next_st;
4833 
4834  st_ddb_idx = vzalloc(fw_idx_size);
4835  if (!st_ddb_idx)
4836  break;
4837 
4838  st_ddb_idx->fw_ddb_idx = idx;
4839 
4840  list_add_tail(&st_ddb_idx->list, list_st);
4841 continue_next_st:
4842  if (next_idx == 0)
4843  break;
4844  }
4845 
4846 exit_st_list:
4847  if (fw_ddb_entry)
4848  dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4849 }
4850 
4859 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4860  struct list_head *list_ddb)
4861 {
4862  struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
4863  uint32_t next_idx = 0;
4864  uint32_t state = 0, conn_err = 0;
4865  int ret;
4866 
4867  list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4868  ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4869  NULL, 0, NULL, &next_idx, &state,
4870  &conn_err, NULL, NULL);
4871  if (ret == QLA_ERROR)
4872  continue;
4873 
4874  if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4875  state == DDB_DS_SESSION_FAILED) {
4876  list_del_init(&ddb_idx->list);
4877  vfree(ddb_idx);
4878  }
4879  }
4880 }
4881 
4882 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4883  struct dev_db_entry *fw_ddb_entry,
4884  int is_reset)
4885 {
4886  struct iscsi_cls_session *cls_sess;
4887  struct iscsi_session *sess;
4888  struct iscsi_cls_conn *cls_conn;
4889  struct iscsi_endpoint *ep;
4890  uint16_t cmds_max = 32;
4891  uint16_t conn_id = 0;
4892  uint32_t initial_cmdsn = 0;
4893  int ret = QLA_SUCCESS;
4894 
4895  struct ddb_entry *ddb_entry = NULL;
4896 
4897  /* Create session object, with INVALID_ENTRY,
4898  * the targer_id would get set when we issue the login
4899  */
4900  cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4901  cmds_max, sizeof(struct ddb_entry),
4902  sizeof(struct ql4_task_data),
4903  initial_cmdsn, INVALID_ENTRY);
4904  if (!cls_sess) {
4905  ret = QLA_ERROR;
4906  goto exit_setup;
4907  }
4908 
4909  /*
4910  * so calling module_put function to decrement the
4911  * reference count.
4912  **/
4913  module_put(qla4xxx_iscsi_transport.owner);
4914  sess = cls_sess->dd_data;
4915  ddb_entry = sess->dd_data;
4916  ddb_entry->sess = cls_sess;
4917 
4918  cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4919  memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4920  sizeof(struct dev_db_entry));
4921 
4922  qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4923 
4924  cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4925 
4926  if (!cls_conn) {
4927  ret = QLA_ERROR;
4928  goto exit_setup;
4929  }
4930 
4931  ddb_entry->conn = cls_conn;
4932 
4933  /* Setup ep, for displaying attributes in sysfs */
4934  ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4935  if (ep) {
4936  ep->conn = cls_conn;
4937  cls_conn->ep = ep;
4938  } else {
4939  DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4940  ret = QLA_ERROR;
4941  goto exit_setup;
4942  }
4943 
4944  /* Update sess/conn params */
4945  qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4946 
4947  if (is_reset == RESET_ADAPTER) {
4948  iscsi_block_session(cls_sess);
4949  /* Use the relogin path to discover new devices
4950  * by short-circuting the logic of setting
4951  * timer to relogin - instead set the flags
4952  * to initiate login right away.
4953  */
4954  set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4955  set_bit(DF_RELOGIN, &ddb_entry->flags);
4956  }
4957 
4958 exit_setup:
4959  return ret;
4960 }
4961 
4962 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4963  struct list_head *list_nt, int is_reset)
4964 {
4965  struct dev_db_entry *fw_ddb_entry;
4966  dma_addr_t fw_ddb_dma;
4967  int max_ddbs;
4968  int fw_idx_size;
4969  int ret;
4970  uint32_t idx = 0, next_idx = 0;
4971  uint32_t state = 0, conn_err = 0;
4972  uint16_t conn_id = 0;
4973  struct qla_ddb_index *nt_ddb_idx;
4974 
4975  fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4976  &fw_ddb_dma);
4977  if (fw_ddb_entry == NULL) {
4978  DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4979  goto exit_nt_list;
4980  }
4981  max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4982  MAX_DEV_DB_ENTRIES;
4983  fw_idx_size = sizeof(struct qla_ddb_index);
4984 
4985  for (idx = 0; idx < max_ddbs; idx = next_idx) {
4986  ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4987  NULL, &next_idx, &state,
4988  &conn_err, NULL, &conn_id);
4989  if (ret == QLA_ERROR)
4990  break;
4991 
4992  if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4993  goto continue_next_nt;
4994 
4995  /* Check if NT, then add to list it */
4996  if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4997  goto continue_next_nt;
4998 
4999  if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5000  state == DDB_DS_SESSION_FAILED))
5001  goto continue_next_nt;
5002 
5003  DEBUG2(ql4_printk(KERN_INFO, ha,
5004  "Adding DDB to session = 0x%x\n", idx));
5005  if (is_reset == INIT_ADAPTER) {
5006  nt_ddb_idx = vmalloc(fw_idx_size);
5007  if (!nt_ddb_idx)
5008  break;
5009 
5010  nt_ddb_idx->fw_ddb_idx = idx;
5011 
5012  /* Copy original isid as it may get updated in function
5013  * qla4xxx_update_isid(). We need original isid in
5014  * function qla4xxx_compare_tuple_ddb to find duplicate
5015  * target */
5016  memcpy(&nt_ddb_idx->flash_isid[0],
5017  &fw_ddb_entry->isid[0],
5018  sizeof(nt_ddb_idx->flash_isid));
5019 
5020  ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5021  fw_ddb_entry);
5022  if (ret == QLA_SUCCESS) {
5023  /* free nt_ddb_idx and do not add to list_nt */
5024  vfree(nt_ddb_idx);
5025  goto continue_next_nt;
5026  }
5027 
5028  /* Copy updated isid */
5029  memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5030  sizeof(struct dev_db_entry));
5031 
5032  list_add_tail(&nt_ddb_idx->list, list_nt);
5033  } else if (is_reset == RESET_ADAPTER) {
5034  if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5035  QLA_SUCCESS)
5036  goto continue_next_nt;
5037  }
5038 
5039  ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
5040  if (ret == QLA_ERROR)
5041  goto exit_nt_list;
5042 
5043 continue_next_nt:
5044  if (next_idx == 0)
5045  break;
5046  }
5047 
5048 exit_nt_list:
5049  if (fw_ddb_entry)
5050  dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5051 }
5052 
5063 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
5064 {
5065  uint16_t tmo = 0;
5066  struct list_head list_st, list_nt;
5067  struct qla_ddb_index *st_ddb_idx, *st_ddb_idx_tmp;
5068  unsigned long wtime;
5069 
5070  if (!test_bit(AF_LINK_UP, &ha->flags)) {
5071  set_bit(AF_BUILD_DDB_LIST, &ha->flags);
5072  ha->is_reset = is_reset;
5073  return;
5074  }
5075 
5076  INIT_LIST_HEAD(&list_st);
5077  INIT_LIST_HEAD(&list_nt);
5078 
5079  qla4xxx_build_st_list(ha, &list_st);
5080 
5081  /* Before issuing conn open mbox, ensure all IPs states are configured
5082  * Note, conn open fails if IPs are not configured
5083  */
5084  qla4xxx_wait_for_ip_configuration(ha);
5085 
5086  /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
5087  list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
5088  qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
5089  }
5090 
5091  /* Wait to ensure all sendtargets are done for min 12 sec wait */
5092  tmo = ((ha->def_timeout > LOGIN_TOV) &&
5093  (ha->def_timeout < LOGIN_TOV * 10) ?
5094  ha->def_timeout : LOGIN_TOV);
5095 
5096  DEBUG2(ql4_printk(KERN_INFO, ha,
5097  "Default time to wait for build ddb %d\n", tmo));
5098 
5099  wtime = jiffies + (HZ * tmo);
5100  do {
5101  if (list_empty(&list_st))
5102  break;
5103 
5104  qla4xxx_remove_failed_ddb(ha, &list_st);
5105  schedule_timeout_uninterruptible(HZ / 10);
5106  } while (time_after(wtime, jiffies));
5107 
5108  /* Free up the sendtargets list */
5109  qla4xxx_free_ddb_list(&list_st);
5110 
5111  qla4xxx_build_nt_list(ha, &list_nt, is_reset);
5112 
5113  qla4xxx_free_ddb_list(&list_nt);
5114 
5115  qla4xxx_free_ddb_index(ha);
5116 }
5117 
5127 static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
5128  const struct pci_device_id *ent)
5129 {
5130  int ret = -ENODEV, status;
5131  struct Scsi_Host *host;
5132  struct scsi_qla_host *ha;
5133  uint8_t init_retry_count = 0;
5134  char buf[34];
5135  struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
5136  uint32_t dev_state;
5137 
5138  if (pci_enable_device(pdev))
5139  return -1;
5140 
5141  host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
5142  if (host == NULL) {
5143  printk(KERN_WARNING
5144  "qla4xxx: Couldn't allocate host from scsi layer!\n");
5145  goto probe_disable_device;
5146  }
5147 
5148  /* Clear our data area */
5149  ha = to_qla_host(host);
5150  memset(ha, 0, sizeof(*ha));
5151 
5152  /* Save the information from PCI BIOS. */
5153  ha->pdev = pdev;
5154  ha->host = host;
5155  ha->host_no = host->host_no;
5156  ha->func_num = PCI_FUNC(ha->pdev->devfn);
5157 
5158  pci_enable_pcie_error_reporting(pdev);
5159 
5160  /* Setup Runtime configurable options */
5161  if (is_qla8022(ha)) {
5162  ha->isp_ops = &qla4_82xx_isp_ops;
5163  ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
5164  ha->qdr_sn_window = -1;
5165  ha->ddr_mn_window = -1;
5166  ha->curr_window = 255;
5167  nx_legacy_intr = &legacy_intr[ha->func_num];
5168  ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
5169  ha->nx_legacy_intr.tgt_status_reg =
5170  nx_legacy_intr->tgt_status_reg;
5171  ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
5172  ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
5173  } else if (is_qla8032(ha)) {
5174  ha->isp_ops = &qla4_83xx_isp_ops;
5175  ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
5176  } else {
5177  ha->isp_ops = &qla4xxx_isp_ops;
5178  }
5179 
5180  if (is_qla80XX(ha)) {
5181  rwlock_init(&ha->hw_lock);
5182  ha->pf_bit = ha->func_num << 16;
5183  /* Set EEH reset type to fundamental if required by hba */
5184  pdev->needs_freset = 1;
5185  }
5186 
5187  /* Configure PCI I/O space. */
5188  ret = ha->isp_ops->iospace_config(ha);
5189  if (ret)
5190  goto probe_failed_ioconfig;
5191 
5192  ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
5193  pdev->device, pdev->irq, ha->reg);
5194 
5195  qla4xxx_config_dma_addressing(ha);
5196 
5197  /* Initialize lists and spinlocks. */
5198  INIT_LIST_HEAD(&ha->free_srb_q);
5199 
5200  mutex_init(&ha->mbox_sem);
5201  mutex_init(&ha->chap_sem);
5202  init_completion(&ha->mbx_intr_comp);
5203  init_completion(&ha->disable_acb_comp);
5204 
5205  spin_lock_init(&ha->hardware_lock);
5206  spin_lock_init(&ha->work_lock);
5207 
5208  /* Initialize work list */
5209  INIT_LIST_HEAD(&ha->work_list);
5210 
5211  /* Allocate dma buffers */
5212  if (qla4xxx_mem_alloc(ha)) {
5213  ql4_printk(KERN_WARNING, ha,
5214  "[ERROR] Failed to allocate memory for adapter\n");
5215 
5216  ret = -ENOMEM;
5217  goto probe_failed;
5218  }
5219 
5220  host->cmd_per_lun = 3;
5221  host->max_channel = 0;
5222  host->max_lun = MAX_LUNS - 1;
5223  host->max_id = MAX_TARGETS;
5224  host->max_cmd_len = IOCB_MAX_CDB_LEN;
5225  host->can_queue = MAX_SRBS ;
5226  host->transportt = qla4xxx_scsi_transport;
5227 
5228  ret = scsi_init_shared_tag_map(host, MAX_SRBS);
5229  if (ret) {
5230  ql4_printk(KERN_WARNING, ha,
5231  "%s: scsi_init_shared_tag_map failed\n", __func__);
5232  goto probe_failed;
5233  }
5234 
5235  pci_set_drvdata(pdev, ha);
5236 
5237  ret = scsi_add_host(host, &pdev->dev);
5238  if (ret)
5239  goto probe_failed;
5240 
5241  if (is_qla80XX(ha))
5242  qla4_8xxx_get_flash_info(ha);
5243 
5244  if (is_qla8032(ha)) {
5245  qla4_83xx_read_reset_template(ha);
5246  /*
5247  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
5248  * If DONRESET_BIT0 is set, drivers should not set dev_state
5249  * to NEED_RESET. But if NEED_RESET is set, drivers should
5250  * should honor the reset.
5251  */
5252  if (ql4xdontresethba == 1)
5253  qla4_83xx_set_idc_dontreset(ha);
5254  }
5255 
5256  /*
5257  * Initialize the Host adapter request/response queues and
5258  * firmware
5259  * NOTE: interrupts enabled upon successful completion
5260  */
5261  status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5262 
5263  /* Dont retry adapter initialization if IRQ allocation failed */
5264  if (!test_bit(AF_IRQ_ATTACHED, &ha->flags))
5265  goto skip_retry_init;
5266 
5267  while ((!test_bit(AF_ONLINE, &ha->flags)) &&
5268  init_retry_count++ < MAX_INIT_RETRIES) {
5269 
5270  if (is_qla80XX(ha)) {
5271  ha->isp_ops->idc_lock(ha);
5272  dev_state = qla4_8xxx_rd_direct(ha,
5273  QLA82XX_CRB_DEV_STATE);
5274  ha->isp_ops->idc_unlock(ha);
5275  if (dev_state == QLA8XXX_DEV_FAILED) {
5276  ql4_printk(KERN_WARNING, ha, "%s: don't retry "
5277  "initialize adapter. H/W is in failed state\n",
5278  __func__);
5279  break;
5280  }
5281  }
5282  DEBUG2(printk("scsi: %s: retrying adapter initialization "
5283  "(%d)\n", __func__, init_retry_count));
5284 
5285  if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
5286  continue;
5287 
5288  status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5289  }
5290 
5291 skip_retry_init:
5292  if (!test_bit(AF_ONLINE, &ha->flags)) {
5293  ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
5294 
5295  if ((is_qla8022(ha) && ql4xdontresethba) ||
5296  (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5297  /* Put the device in failed state. */
5298  DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
5299  ha->isp_ops->idc_lock(ha);
5300  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5301  QLA8XXX_DEV_FAILED);
5302  ha->isp_ops->idc_unlock(ha);
5303  }
5304  ret = -ENODEV;
5305  goto remove_host;
5306  }
5307 
5308  /* Startup the kernel thread for this host adapter. */
5309  DEBUG2(printk("scsi: %s: Starting kernel thread for "
5310  "qla4xxx_dpc\n", __func__));
5311  sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
5312  ha->dpc_thread = create_singlethread_workqueue(buf);
5313  if (!ha->dpc_thread) {
5314  ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
5315  ret = -ENODEV;
5316  goto remove_host;
5317  }
5318  INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
5319 
5320  sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
5321  ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
5322  if (!ha->task_wq) {
5323  ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
5324  ret = -ENODEV;
5325  goto remove_host;
5326  }
5327 
5328  /*
5329  * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
5330  * (which is called indirectly by qla4xxx_initialize_adapter),
5331  * so that irqs will be registered after crbinit but before
5332  * mbx_intr_enable.
5333  */
5334  if (is_qla40XX(ha)) {
5335  ret = qla4xxx_request_irqs(ha);
5336  if (ret) {
5337  ql4_printk(KERN_WARNING, ha, "Failed to reserve "
5338  "interrupt %d already in use.\n", pdev->irq);
5339  goto remove_host;
5340  }
5341  }
5342 
5343  pci_save_state(ha->pdev);
5344  ha->isp_ops->enable_intrs(ha);
5345 
5346  /* Start timer thread. */
5347  qla4xxx_start_timer(ha, qla4xxx_timer, 1);
5348 
5349  set_bit(AF_INIT_DONE, &ha->flags);
5350 
5351  qla4_8xxx_alloc_sysfs_attr(ha);
5352 
5353  printk(KERN_INFO
5354  " QLogic iSCSI HBA Driver version: %s\n"
5355  " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
5356  qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
5357  ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
5358  ha->patch_number, ha->build_number);
5359 
5360  /* Set the driver version */
5361  if (is_qla80XX(ha))
5362  qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
5363 
5364  if (qla4xxx_setup_boot_info(ha))
5365  ql4_printk(KERN_ERR, ha,
5366  "%s: No iSCSI boot target configured\n", __func__);
5367 
5368  /* Perform the build ddb list and login to each */
5369  qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
5370  iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
5371 
5372  qla4xxx_create_chap_list(ha);
5373 
5374  qla4xxx_create_ifaces(ha);
5375  return 0;
5376 
5377 remove_host:
5378  scsi_remove_host(ha->host);
5379 
5380 probe_failed:
5381  qla4xxx_free_adapter(ha);
5382 
5383 probe_failed_ioconfig:
5384  pci_disable_pcie_error_reporting(pdev);
5385  scsi_host_put(ha->host);
5386 
5387 probe_disable_device:
5388  pci_disable_device(pdev);
5389 
5390  return ret;
5391 }
5392 
5401 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
5402 {
5403  struct scsi_qla_host *other_ha = NULL;
5404  struct pci_dev *other_pdev = NULL;
5405  int fn = ISP4XXX_PCI_FN_2;
5406 
5407  /*iscsi function numbers for ISP4xxx is 1 and 3*/
5408  if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
5409  fn = ISP4XXX_PCI_FN_1;
5410 
5411  other_pdev =
5412  pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5413  ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5414  fn));
5415 
5416  /* Get other_ha if other_pdev is valid and state is enable*/
5417  if (other_pdev) {
5418  if (atomic_read(&other_pdev->enable_cnt)) {
5419  other_ha = pci_get_drvdata(other_pdev);
5420  if (other_ha) {
5421  set_bit(AF_HA_REMOVAL, &other_ha->flags);
5422  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
5423  "Prevent %s reinit\n", __func__,
5424  dev_name(&other_ha->pdev->dev)));
5425  }
5426  }
5427  pci_dev_put(other_pdev);
5428  }
5429 }
5430 
5431 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
5432 {
5433  struct ddb_entry *ddb_entry;
5434  int options;
5435  int idx;
5436 
5437  for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5438 
5439  ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5440  if ((ddb_entry != NULL) &&
5441  (ddb_entry->ddb_type == FLASH_DDB)) {
5442 
5443  options = LOGOUT_OPTION_CLOSE_SESSION;
5444  if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
5445  == QLA_ERROR)
5446  ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
5447  __func__);
5448 
5449  qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5450  /*
5451  * we have decremented the reference count of the driver
5452  * when we setup the session to have the driver unload
5453  * to be seamless without actually destroying the
5454  * session
5455  **/
5456  try_module_get(qla4xxx_iscsi_transport.owner);
5457  iscsi_destroy_endpoint(ddb_entry->conn->ep);
5458  qla4xxx_free_ddb(ha, ddb_entry);
5459  iscsi_session_teardown(ddb_entry->sess);
5460  }
5461  }
5462 }
5467 static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
5468 {
5469  struct scsi_qla_host *ha;
5470 
5471  /*
5472  * If the PCI device is disabled then it means probe_adapter had
5473  * failed and resources already cleaned up on probe_adapter exit.
5474  */
5475  if (!pci_is_enabled(pdev))
5476  return;
5477 
5478  ha = pci_get_drvdata(pdev);
5479 
5480  if (is_qla40XX(ha))
5481  qla4xxx_prevent_other_port_reinit(ha);
5482 
5483  /* destroy iface from sysfs */
5484  qla4xxx_destroy_ifaces(ha);
5485 
5486  if ((!ql4xdisablesysfsboot) && ha->boot_kset)
5487  iscsi_boot_destroy_kset(ha->boot_kset);
5488 
5489  qla4xxx_destroy_fw_ddb_session(ha);
5490  qla4_8xxx_free_sysfs_attr(ha);
5491 
5492  scsi_remove_host(ha->host);
5493 
5494  qla4xxx_free_adapter(ha);
5495 
5496  scsi_host_put(ha->host);
5497 
5498  pci_disable_pcie_error_reporting(pdev);
5499  pci_disable_device(pdev);
5500  pci_set_drvdata(pdev, NULL);
5501 }
5502 
5510 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
5511 {
5512  int retval;
5513 
5514  /* Update our PCI device dma_mask for full 64 bit mask */
5515  if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
5516  if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
5517  dev_dbg(&ha->pdev->dev,
5518  "Failed to set 64 bit PCI consistent mask; "
5519  "using 32 bit.\n");
5520  retval = pci_set_consistent_dma_mask(ha->pdev,
5521  DMA_BIT_MASK(32));
5522  }
5523  } else
5524  retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
5525 }
5526 
5527 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
5528 {
5529  struct iscsi_cls_session *cls_sess;
5530  struct iscsi_session *sess;
5531  struct ddb_entry *ddb;
5532  int queue_depth = QL4_DEF_QDEPTH;
5533 
5534  cls_sess = starget_to_session(sdev->sdev_target);
5535  sess = cls_sess->dd_data;
5536  ddb = sess->dd_data;
5537 
5538  sdev->hostdata = ddb;
5539  sdev->tagged_supported = 1;
5540 
5541  if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
5542  queue_depth = ql4xmaxqdepth;
5543 
5544  scsi_activate_tcq(sdev, queue_depth);
5545  return 0;
5546 }
5547 
5548 static int qla4xxx_slave_configure(struct scsi_device *sdev)
5549 {
5550  sdev->tagged_supported = 1;
5551  return 0;
5552 }
5553 
5554 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
5555 {
5556  scsi_deactivate_tcq(sdev, 1);
5557 }
5558 
5559 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
5560  int reason)
5561 {
5562  if (!ql4xqfulltracking)
5563  return -EOPNOTSUPP;
5564 
5565  return iscsi_change_queue_depth(sdev, qdepth, reason);
5566 }
5567 
5575 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
5576  uint32_t index)
5577 {
5578  struct srb *srb = NULL;
5579  struct scsi_cmnd *cmd = NULL;
5580 
5581  cmd = scsi_host_find_tag(ha->host, index);
5582  if (!cmd)
5583  return srb;
5584 
5585  srb = (struct srb *)CMD_SP(cmd);
5586  if (!srb)
5587  return srb;
5588 
5589  /* update counters */
5590  if (srb->flags & SRB_DMA_VALID) {
5591  ha->req_q_count += srb->iocb_cnt;
5592  ha->iocb_cnt -= srb->iocb_cnt;
5593  if (srb->cmd)
5594  srb->cmd->host_scribble =
5595  (unsigned char *)(unsigned long) MAX_SRBS;
5596  }
5597  return srb;
5598 }
5599 
5608 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
5609  struct scsi_cmnd *cmd)
5610 {
5611  int done = 0;
5612  struct srb *rp;
5613  uint32_t max_wait_time = EH_WAIT_CMD_TOV;
5614  int ret = SUCCESS;
5615 
5616  /* Dont wait on command if PCI error is being handled
5617  * by PCI AER driver
5618  */
5619  if (unlikely(pci_channel_offline(ha->pdev)) ||
5620  (test_bit(AF_EEH_BUSY, &ha->flags))) {
5621  ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
5622  ha->host_no, __func__);
5623  return ret;
5624  }
5625 
5626  do {
5627  /* Checking to see if its returned to OS */
5628  rp = (struct srb *) CMD_SP(cmd);
5629  if (rp == NULL) {
5630  done++;
5631  break;
5632  }
5633 
5634  msleep(2000);
5635  } while (max_wait_time--);
5636 
5637  return done;
5638 }
5639 
5644 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
5645 {
5646  unsigned long wait_online;
5647 
5648  wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
5649  while (time_before(jiffies, wait_online)) {
5650 
5651  if (adapter_up(ha))
5652  return QLA_SUCCESS;
5653 
5654  msleep(2000);
5655  }
5656 
5657  return QLA_ERROR;
5658 }
5659 
5669 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
5670  struct scsi_target *stgt,
5671  struct scsi_device *sdev)
5672 {
5673  int cnt;
5674  int status = 0;
5675  struct scsi_cmnd *cmd;
5676 
5677  /*
5678  * Waiting for all commands for the designated target or dev
5679  * in the active array
5680  */
5681  for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
5682  cmd = scsi_host_find_tag(ha->host, cnt);
5683  if (cmd && stgt == scsi_target(cmd->device) &&
5684  (!sdev || sdev == cmd->device)) {
5685  if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5686  status++;
5687  break;
5688  }
5689  }
5690  }
5691  return status;
5692 }
5693 
5701 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
5702 {
5703  struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5704  unsigned int id = cmd->device->id;
5705  unsigned int lun = cmd->device->lun;
5706  unsigned long flags;
5707  struct srb *srb = NULL;
5708  int ret = SUCCESS;
5709  int wait = 0;
5710 
5711  ql4_printk(KERN_INFO, ha,
5712  "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
5713  ha->host_no, id, lun, cmd);
5714 
5715  spin_lock_irqsave(&ha->hardware_lock, flags);
5716  srb = (struct srb *) CMD_SP(cmd);
5717  if (!srb) {
5718  spin_unlock_irqrestore(&ha->hardware_lock, flags);
5719  return SUCCESS;
5720  }
5721  kref_get(&srb->srb_ref);
5722  spin_unlock_irqrestore(&ha->hardware_lock, flags);
5723 
5724  if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
5725  DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
5726  ha->host_no, id, lun));
5727  ret = FAILED;
5728  } else {
5729  DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
5730  ha->host_no, id, lun));
5731  wait = 1;
5732  }
5733 
5734  kref_put(&srb->srb_ref, qla4xxx_srb_compl);
5735 
5736  /* Wait for command to complete */
5737  if (wait) {
5738  if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5739  DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
5740  ha->host_no, id, lun));
5741  ret = FAILED;
5742  }
5743  }
5744 
5745  ql4_printk(KERN_INFO, ha,
5746  "scsi%ld:%d:%d: Abort command - %s\n",
5747  ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
5748 
5749  return ret;
5750 }
5751 
5759 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
5760 {
5761  struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5762  struct ddb_entry *ddb_entry = cmd->device->hostdata;
5763  int ret = FAILED, stat;
5764 
5765  if (!ddb_entry)
5766  return ret;
5767 
5768  ret = iscsi_block_scsi_eh(cmd);
5769  if (ret)
5770  return ret;
5771  ret = FAILED;
5772 
5773  ql4_printk(KERN_INFO, ha,
5774  "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
5775  cmd->device->channel, cmd->device->id, cmd->device->lun);
5776 
5777  DEBUG2(printk(KERN_INFO
5778  "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
5779  "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
5780  cmd, jiffies, cmd->request->timeout / HZ,
5781  ha->dpc_flags, cmd->result, cmd->allowed));
5782 
5783  /* FIXME: wait for hba to go online */
5784  stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
5785  if (stat != QLA_SUCCESS) {
5786  ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
5787  goto eh_dev_reset_done;
5788  }
5789 
5790  if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5791  cmd->device)) {
5792  ql4_printk(KERN_INFO, ha,
5793  "DEVICE RESET FAILED - waiting for "
5794  "commands.\n");
5795  goto eh_dev_reset_done;
5796  }
5797 
5798  /* Send marker. */
5799  if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5800  MM_LUN_RESET) != QLA_SUCCESS)
5801  goto eh_dev_reset_done;
5802 
5803  ql4_printk(KERN_INFO, ha,
5804  "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
5805  ha->host_no, cmd->device->channel, cmd->device->id,
5806  cmd->device->lun);
5807 
5808  ret = SUCCESS;
5809 
5810 eh_dev_reset_done:
5811 
5812  return ret;
5813 }
5814 
5821 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
5822 {
5823  struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5824  struct ddb_entry *ddb_entry = cmd->device->hostdata;
5825  int stat, ret;
5826 
5827  if (!ddb_entry)
5828  return FAILED;
5829 
5830  ret = iscsi_block_scsi_eh(cmd);
5831  if (ret)
5832  return ret;
5833 
5834  starget_printk(KERN_INFO, scsi_target(cmd->device),
5835  "WARM TARGET RESET ISSUED.\n");
5836 
5837  DEBUG2(printk(KERN_INFO
5838  "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
5839  "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
5840  ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
5841  ha->dpc_flags, cmd->result, cmd->allowed));
5842 
5843  stat = qla4xxx_reset_target(ha, ddb_entry);
5844  if (stat != QLA_SUCCESS) {
5845  starget_printk(KERN_INFO, scsi_target(cmd->device),
5846  "WARM TARGET RESET FAILED.\n");
5847  return FAILED;
5848  }
5849 
5850  if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5851  NULL)) {
5852  starget_printk(KERN_INFO, scsi_target(cmd->device),
5853  "WARM TARGET DEVICE RESET FAILED - "
5854  "waiting for commands.\n");
5855  return FAILED;
5856  }
5857 
5858  /* Send marker. */
5859  if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5860  MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5861  starget_printk(KERN_INFO, scsi_target(cmd->device),
5862  "WARM TARGET DEVICE RESET FAILED - "
5863  "marker iocb failed.\n");
5864  return FAILED;
5865  }
5866 
5867  starget_printk(KERN_INFO, scsi_target(cmd->device),
5868  "WARM TARGET RESET SUCCEEDED.\n");
5869  return SUCCESS;
5870 }
5871 
5879 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5880 {
5881  if (shost->shost_state == SHOST_RECOVERY)
5882  return 1;
5883  return 0;
5884 }
5885 
5893 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
5894 {
5895  int return_status = FAILED;
5896  struct scsi_qla_host *ha;
5897 
5898  ha = to_qla_host(cmd->device->host);
5899 
5900  if (is_qla8032(ha) && ql4xdontresethba)
5901  qla4_83xx_set_idc_dontreset(ha);
5902 
5903  /*
5904  * For ISP8324, if IDC_CTRL DONTRESET_BIT0 is set by other
5905  * protocol drivers, we should not set device_state to
5906  * NEED_RESET
5907  */
5908  if (ql4xdontresethba ||
5909  (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
5910  DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5911  ha->host_no, __func__));
5912 
5913  /* Clear outstanding srb in queues */
5914  if (qla4xxx_is_eh_active(cmd->device->host))
5915  qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
5916 
5917  return FAILED;
5918  }
5919 
5920  ql4_printk(KERN_INFO, ha,
5921  "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
5922  cmd->device->channel, cmd->device->id, cmd->device->lun);
5923 
5924  if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
5925  DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
5926  "DEAD.\n", ha->host_no, cmd->device->channel,
5927  __func__));
5928 
5929  return FAILED;
5930  }
5931 
5932  if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5933  if (is_qla80XX(ha))
5934  set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5935  else
5936  set_bit(DPC_RESET_HA, &ha->dpc_flags);
5937  }
5938 
5939  if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
5940  return_status = SUCCESS;
5941 
5942  ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
5943  return_status == FAILED ? "FAILED" : "SUCCEEDED");
5944 
5945  return return_status;
5946 }
5947 
5948 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
5949 {
5950  uint32_t mbox_cmd[MBOX_REG_COUNT];
5951  uint32_t mbox_sts[MBOX_REG_COUNT];
5952  struct addr_ctrl_blk_def *acb = NULL;
5953  uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
5954  int rval = QLA_SUCCESS;
5955  dma_addr_t acb_dma;
5956 
5957  acb = dma_alloc_coherent(&ha->pdev->dev,
5958  sizeof(struct addr_ctrl_blk_def),
5959  &acb_dma, GFP_KERNEL);
5960  if (!acb) {
5961  ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
5962  __func__);
5963  rval = -ENOMEM;
5964  goto exit_port_reset;
5965  }
5966 
5967  memset(acb, 0, acb_len);
5968 
5969  rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
5970  if (rval != QLA_SUCCESS) {
5971  rval = -EIO;
5972  goto exit_free_acb;
5973  }
5974 
5975  rval = qla4xxx_disable_acb(ha);
5976  if (rval != QLA_SUCCESS) {
5977  rval = -EIO;
5978  goto exit_free_acb;
5979  }
5980 
5981  wait_for_completion_timeout(&ha->disable_acb_comp,
5982  DISABLE_ACB_TOV * HZ);
5983 
5984  rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
5985  if (rval != QLA_SUCCESS) {
5986  rval = -EIO;
5987  goto exit_free_acb;
5988  }
5989 
5990 exit_free_acb:
5991  dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
5992  acb, acb_dma);
5993 exit_port_reset:
5994  DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
5995  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
5996  return rval;
5997 }
5998 
5999 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
6000 {
6001  struct scsi_qla_host *ha = to_qla_host(shost);
6002  int rval = QLA_SUCCESS;
6003 
6004  if (ql4xdontresethba) {
6005  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
6006  __func__));
6007  rval = -EPERM;
6008  goto exit_host_reset;
6009  }
6010 
6011  rval = qla4xxx_wait_for_hba_online(ha);
6012  if (rval != QLA_SUCCESS) {
6013  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
6014  "adapter\n", __func__));
6015  rval = -EIO;
6016  goto exit_host_reset;
6017  }
6018 
6019  if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
6020  goto recover_adapter;
6021 
6022  switch (reset_type) {
6023  case SCSI_ADAPTER_RESET:
6024  set_bit(DPC_RESET_HA, &ha->dpc_flags);
6025  break;
6026  case SCSI_FIRMWARE_RESET:
6027  if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
6028  if (is_qla80XX(ha))
6029  /* set firmware context reset */
6030  set_bit(DPC_RESET_HA_FW_CONTEXT,
6031  &ha->dpc_flags);
6032  else {
6033  rval = qla4xxx_context_reset(ha);
6034  goto exit_host_reset;
6035  }
6036  }
6037  break;
6038  }
6039 
6040 recover_adapter:
6041  rval = qla4xxx_recover_adapter(ha);
6042  if (rval != QLA_SUCCESS) {
6043  DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
6044  __func__));
6045  rval = -EIO;
6046  }
6047 
6048 exit_host_reset:
6049  return rval;
6050 }
6051 
6052 /* PCI AER driver recovers from all correctable errors w/o
6053  * driver intervention. For uncorrectable errors PCI AER
6054  * driver calls the following device driver's callbacks
6055  *
6056  * - Fatal Errors - link_reset
6057  * - Non-Fatal Errors - driver's pci_error_detected() which
6058  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
6059  *
6060  * PCI AER driver calls
6061  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
6062  * returns RECOVERED or NEED_RESET if fw_hung
6063  * NEED_RESET - driver's slot_reset()
6064  * DISCONNECT - device is dead & cannot recover
6065  * RECOVERED - driver's pci_resume()
6066  */
6067 static pci_ers_result_t
6068 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
6069 {
6070  struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6071 
6072  ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
6073  ha->host_no, __func__, state);
6074 
6075  if (!is_aer_supported(ha))
6076  return PCI_ERS_RESULT_NONE;
6077 
6078  switch (state) {
6079  case pci_channel_io_normal:
6080  clear_bit(AF_EEH_BUSY, &ha->flags);
6081  return PCI_ERS_RESULT_CAN_RECOVER;
6082  case pci_channel_io_frozen:
6083  set_bit(AF_EEH_BUSY, &ha->flags);
6084  qla4xxx_mailbox_premature_completion(ha);
6085  qla4xxx_free_irqs(ha);
6086  pci_disable_device(pdev);
6087  /* Return back all IOs */
6088  qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
6089  return PCI_ERS_RESULT_NEED_RESET;
6090  case pci_channel_io_perm_failure:
6091  set_bit(AF_EEH_BUSY, &ha->flags);
6092  set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
6093  qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
6094  return PCI_ERS_RESULT_DISCONNECT;
6095  }
6096  return PCI_ERS_RESULT_NEED_RESET;
6097 }
6098 
6104 static pci_ers_result_t
6105 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
6106 {
6107  struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6108 
6109  if (!is_aer_supported(ha))
6110  return PCI_ERS_RESULT_NONE;
6111 
6112  return PCI_ERS_RESULT_RECOVERED;
6113 }
6114 
6115 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
6116 {
6117  uint32_t rval = QLA_ERROR;
6118  uint32_t ret = 0;
6119  int fn;
6120  struct pci_dev *other_pdev = NULL;
6121 
6122  ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
6123 
6124  set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6125 
6126  if (test_bit(AF_ONLINE, &ha->flags)) {
6127  clear_bit(AF_ONLINE, &ha->flags);
6128  clear_bit(AF_LINK_UP, &ha->flags);
6129  iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
6130  qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
6131  }
6132 
6133  fn = PCI_FUNC(ha->pdev->devfn);
6134  while (fn > 0) {
6135  fn--;
6136  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
6137  "func %x\n", ha->host_no, __func__, fn);
6138  /* Get the pci device given the domain, bus,
6139  * slot/function number */
6140  other_pdev =
6141  pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
6142  ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
6143  fn));
6144 
6145  if (!other_pdev)
6146  continue;
6147 
6148  if (atomic_read(&other_pdev->enable_cnt)) {
6149  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
6150  "func in enabled state%x\n", ha->host_no,
6151  __func__, fn);
6152  pci_dev_put(other_pdev);
6153  break;
6154  }
6155  pci_dev_put(other_pdev);
6156  }
6157 
6158  /* The first function on the card, the reset owner will
6159  * start & initialize the firmware. The other functions
6160  * on the card will reset the firmware context
6161  */
6162  if (!fn) {
6163  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
6164  "0x%x is the owner\n", ha->host_no, __func__,
6165  ha->pdev->devfn);
6166 
6167  ha->isp_ops->idc_lock(ha);
6168  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6169  QLA8XXX_DEV_COLD);
6170  ha->isp_ops->idc_unlock(ha);
6171 
6172  rval = qla4_8xxx_update_idc_reg(ha);
6173  if (rval == QLA_ERROR) {
6174  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
6175  ha->host_no, __func__);
6176  ha->isp_ops->idc_lock(ha);
6177  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6178  QLA8XXX_DEV_FAILED);
6179  ha->isp_ops->idc_unlock(ha);
6180  goto exit_error_recovery;
6181  }
6182 
6183  clear_bit(AF_FW_RECOVERY, &ha->flags);
6184  rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6185 
6186  if (rval != QLA_SUCCESS) {
6187  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6188  "FAILED\n", ha->host_no, __func__);
6189  ha->isp_ops->idc_lock(ha);
6190  qla4_8xxx_clear_drv_active(ha);
6191  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6192  QLA8XXX_DEV_FAILED);
6193  ha->isp_ops->idc_unlock(ha);
6194  } else {
6195  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6196  "READY\n", ha->host_no, __func__);
6197  ha->isp_ops->idc_lock(ha);
6198  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
6199  QLA8XXX_DEV_READY);
6200  /* Clear driver state register */
6201  qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
6202  qla4_8xxx_set_drv_active(ha);
6203  ha->isp_ops->idc_unlock(ha);
6204  ret = qla4xxx_request_irqs(ha);
6205  if (ret) {
6206  ql4_printk(KERN_WARNING, ha, "Failed to "
6207  "reserve interrupt %d already in use.\n",
6208  ha->pdev->irq);
6209  rval = QLA_ERROR;
6210  } else {
6211  ha->isp_ops->enable_intrs(ha);
6212  rval = QLA_SUCCESS;
6213  }
6214  }
6215  } else {
6216  ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
6217  "the reset owner\n", ha->host_no, __func__,
6218  ha->pdev->devfn);
6219  if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
6220  QLA8XXX_DEV_READY)) {
6221  clear_bit(AF_FW_RECOVERY, &ha->flags);
6222  rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6223  if (rval == QLA_SUCCESS) {
6224  ret = qla4xxx_request_irqs(ha);
6225  if (ret) {
6226  ql4_printk(KERN_WARNING, ha, "Failed to"
6227  " reserve interrupt %d already in"
6228  " use.\n", ha->pdev->irq);
6229  rval = QLA_ERROR;
6230  } else {
6231  ha->isp_ops->enable_intrs(ha);
6232  rval = QLA_SUCCESS;
6233  }
6234  }
6235  ha->isp_ops->idc_lock(ha);
6236  qla4_8xxx_set_drv_active(ha);
6237  ha->isp_ops->idc_unlock(ha);
6238  }
6239  }
6240 exit_error_recovery:
6241  clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6242  return rval;
6243 }
6244 
6245 static pci_ers_result_t
6246 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
6247 {
6248  pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
6249  struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6250  int rc;
6251 
6252  ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
6253  ha->host_no, __func__);
6254 
6255  if (!is_aer_supported(ha))
6256  return PCI_ERS_RESULT_NONE;
6257 
6258  /* Restore the saved state of PCIe device -
6259  * BAR registers, PCI Config space, PCIX, MSI,
6260  * IOV states
6261  */
6262  pci_restore_state(pdev);
6263 
6264  /* pci_restore_state() clears the saved_state flag of the device
6265  * save restored state which resets saved_state flag
6266  */
6267  pci_save_state(pdev);
6268 
6269  /* Initialize device or resume if in suspended state */
6270  rc = pci_enable_device(pdev);
6271  if (rc) {
6272  ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
6273  "device after reset\n", ha->host_no, __func__);
6274  goto exit_slot_reset;
6275  }
6276 
6277  ha->isp_ops->disable_intrs(ha);
6278 
6279  if (is_qla80XX(ha)) {
6280  if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
6281  ret = PCI_ERS_RESULT_RECOVERED;
6282  goto exit_slot_reset;
6283  } else
6284  goto exit_slot_reset;
6285  }
6286 
6287 exit_slot_reset:
6288  ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
6289  "device after reset\n", ha->host_no, __func__, ret);
6290  return ret;
6291 }
6292 
6293 static void
6294 qla4xxx_pci_resume(struct pci_dev *pdev)
6295 {
6296  struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6297  int ret;
6298 
6299  ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
6300  ha->host_no, __func__);
6301 
6302  ret = qla4xxx_wait_for_hba_online(ha);
6303  if (ret != QLA_SUCCESS) {
6304  ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
6305  "resume I/O from slot/link_reset\n", ha->host_no,
6306  __func__);
6307  }
6308 
6309  pci_cleanup_aer_uncorrect_error_status(pdev);
6310  clear_bit(AF_EEH_BUSY, &ha->flags);
6311 }
6312 
6313 static const struct pci_error_handlers qla4xxx_err_handler = {
6314  .error_detected = qla4xxx_pci_error_detected,
6315  .mmio_enabled = qla4xxx_pci_mmio_enabled,
6316  .slot_reset = qla4xxx_pci_slot_reset,
6317  .resume = qla4xxx_pci_resume,
6318 };
6319 
6320 static struct pci_device_id qla4xxx_pci_tbl[] = {
6321  {
6322  .vendor = PCI_VENDOR_ID_QLOGIC,
6323  .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
6324  .subvendor = PCI_ANY_ID,
6325  .subdevice = PCI_ANY_ID,
6326  },
6327  {
6328  .vendor = PCI_VENDOR_ID_QLOGIC,
6329  .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
6330  .subvendor = PCI_ANY_ID,
6331  .subdevice = PCI_ANY_ID,
6332  },
6333  {
6334  .vendor = PCI_VENDOR_ID_QLOGIC,
6335  .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
6336  .subvendor = PCI_ANY_ID,
6337  .subdevice = PCI_ANY_ID,
6338  },
6339  {
6340  .vendor = PCI_VENDOR_ID_QLOGIC,
6341  .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
6342  .subvendor = PCI_ANY_ID,
6343  .subdevice = PCI_ANY_ID,
6344  },
6345  {
6346  .vendor = PCI_VENDOR_ID_QLOGIC,
6347  .device = PCI_DEVICE_ID_QLOGIC_ISP8324,
6348  .subvendor = PCI_ANY_ID,
6349  .subdevice = PCI_ANY_ID,
6350  },
6351  {0, 0},
6352 };
6353 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
6354 
6355 static struct pci_driver qla4xxx_pci_driver = {
6356  .name = DRIVER_NAME,
6357  .id_table = qla4xxx_pci_tbl,
6358  .probe = qla4xxx_probe_adapter,
6359  .remove = qla4xxx_remove_adapter,
6360  .err_handler = &qla4xxx_err_handler,
6361 };
6362 
6363 static int __init qla4xxx_module_init(void)
6364 {
6365  int ret;
6366 
6367  /* Allocate cache for SRBs. */
6368  srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
6369  SLAB_HWCACHE_ALIGN, NULL);
6370  if (srb_cachep == NULL) {
6371  printk(KERN_ERR
6372  "%s: Unable to allocate SRB cache..."
6373  "Failing load!\n", DRIVER_NAME);
6374  ret = -ENOMEM;
6375  goto no_srp_cache;
6376  }
6377 
6378  /* Derive version string. */
6379  strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
6380  if (ql4xextended_error_logging)
6381  strcat(qla4xxx_version_str, "-debug");
6382 
6383  qla4xxx_scsi_transport =
6384  iscsi_register_transport(&qla4xxx_iscsi_transport);
6385  if (!qla4xxx_scsi_transport){
6386  ret = -ENODEV;
6387  goto release_srb_cache;
6388  }
6389 
6390  ret = pci_register_driver(&qla4xxx_pci_driver);
6391  if (ret)
6392  goto unregister_transport;
6393 
6394  printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
6395  return 0;
6396 
6397 unregister_transport:
6398  iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6399 release_srb_cache:
6400  kmem_cache_destroy(srb_cachep);
6401 no_srp_cache:
6402  return ret;
6403 }
6404 
6405 static void __exit qla4xxx_module_exit(void)
6406 {
6407  pci_unregister_driver(&qla4xxx_pci_driver);
6408  iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6409  kmem_cache_destroy(srb_cachep);
6410 }
6411 
6412 module_init(qla4xxx_module_init);
6413 module_exit(qla4xxx_module_exit);
6414 
6415 MODULE_AUTHOR("QLogic Corporation");
6416 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
6417 MODULE_LICENSE("GPL");
6418 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
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