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Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / drivers / scsi / qla4xxx / ql4_os.c
1 /*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2013 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 /*
170 * iSCSI Flash DDB sysfs entry points
171 */
172 static int
173 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
174 struct iscsi_bus_flash_conn *fnode_conn,
175 void *data, int len);
176 static int
177 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
178 int param, char *buf);
179 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
180 int len);
181 static int
182 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
183 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
184 struct iscsi_bus_flash_conn *fnode_conn);
185 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
186 struct iscsi_bus_flash_conn *fnode_conn);
187 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
188
189 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
190 QLA82XX_LEGACY_INTR_CONFIG;
191
192 static struct scsi_host_template qla4xxx_driver_template = {
193 .module = THIS_MODULE,
194 .name = DRIVER_NAME,
195 .proc_name = DRIVER_NAME,
196 .queuecommand = qla4xxx_queuecommand,
197
198 .eh_abort_handler = qla4xxx_eh_abort,
199 .eh_device_reset_handler = qla4xxx_eh_device_reset,
200 .eh_target_reset_handler = qla4xxx_eh_target_reset,
201 .eh_host_reset_handler = qla4xxx_eh_host_reset,
202 .eh_timed_out = qla4xxx_eh_cmd_timed_out,
203
204 .slave_configure = qla4xxx_slave_configure,
205 .slave_alloc = qla4xxx_slave_alloc,
206 .slave_destroy = qla4xxx_slave_destroy,
207 .change_queue_depth = qla4xxx_change_queue_depth,
208
209 .this_id = -1,
210 .cmd_per_lun = 3,
211 .use_clustering = ENABLE_CLUSTERING,
212 .sg_tablesize = SG_ALL,
213
214 .max_sectors = 0xFFFF,
215 .shost_attrs = qla4xxx_host_attrs,
216 .host_reset = qla4xxx_host_reset,
217 .vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
218 };
219
220 static struct iscsi_transport qla4xxx_iscsi_transport = {
221 .owner = THIS_MODULE,
222 .name = DRIVER_NAME,
223 .caps = CAP_TEXT_NEGO |
224 CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
225 CAP_DATADGST | CAP_LOGIN_OFFLOAD |
226 CAP_MULTI_R2T,
227 .attr_is_visible = qla4_attr_is_visible,
228 .create_session = qla4xxx_session_create,
229 .destroy_session = qla4xxx_session_destroy,
230 .start_conn = qla4xxx_conn_start,
231 .create_conn = qla4xxx_conn_create,
232 .bind_conn = qla4xxx_conn_bind,
233 .stop_conn = iscsi_conn_stop,
234 .destroy_conn = qla4xxx_conn_destroy,
235 .set_param = iscsi_set_param,
236 .get_conn_param = qla4xxx_conn_get_param,
237 .get_session_param = qla4xxx_session_get_param,
238 .get_ep_param = qla4xxx_get_ep_param,
239 .ep_connect = qla4xxx_ep_connect,
240 .ep_poll = qla4xxx_ep_poll,
241 .ep_disconnect = qla4xxx_ep_disconnect,
242 .get_stats = qla4xxx_conn_get_stats,
243 .send_pdu = iscsi_conn_send_pdu,
244 .xmit_task = qla4xxx_task_xmit,
245 .cleanup_task = qla4xxx_task_cleanup,
246 .alloc_pdu = qla4xxx_alloc_pdu,
247
248 .get_host_param = qla4xxx_host_get_param,
249 .set_iface_param = qla4xxx_iface_set_param,
250 .get_iface_param = qla4xxx_get_iface_param,
251 .bsg_request = qla4xxx_bsg_request,
252 .send_ping = qla4xxx_send_ping,
253 .get_chap = qla4xxx_get_chap_list,
254 .delete_chap = qla4xxx_delete_chap,
255 .get_flashnode_param = qla4xxx_sysfs_ddb_get_param,
256 .set_flashnode_param = qla4xxx_sysfs_ddb_set_param,
257 .new_flashnode = qla4xxx_sysfs_ddb_add,
258 .del_flashnode = qla4xxx_sysfs_ddb_delete,
259 .login_flashnode = qla4xxx_sysfs_ddb_login,
260 .logout_flashnode = qla4xxx_sysfs_ddb_logout,
261 .logout_flashnode_sid = qla4xxx_sysfs_ddb_logout_sid,
262 };
263
264 static struct scsi_transport_template *qla4xxx_scsi_transport;
265
266 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
267 uint32_t iface_type, uint32_t payload_size,
268 uint32_t pid, struct sockaddr *dst_addr)
269 {
270 struct scsi_qla_host *ha = to_qla_host(shost);
271 struct sockaddr_in *addr;
272 struct sockaddr_in6 *addr6;
273 uint32_t options = 0;
274 uint8_t ipaddr[IPv6_ADDR_LEN];
275 int rval;
276
277 memset(ipaddr, 0, IPv6_ADDR_LEN);
278 /* IPv4 to IPv4 */
279 if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
280 (dst_addr->sa_family == AF_INET)) {
281 addr = (struct sockaddr_in *)dst_addr;
282 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
283 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
284 "dest: %pI4\n", __func__,
285 &ha->ip_config.ip_address, ipaddr));
286 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
287 ipaddr);
288 if (rval)
289 rval = -EINVAL;
290 } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
291 (dst_addr->sa_family == AF_INET6)) {
292 /* IPv6 to IPv6 */
293 addr6 = (struct sockaddr_in6 *)dst_addr;
294 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
295
296 options |= PING_IPV6_PROTOCOL_ENABLE;
297
298 /* Ping using LinkLocal address */
299 if ((iface_num == 0) || (iface_num == 1)) {
300 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
301 "src: %pI6 dest: %pI6\n", __func__,
302 &ha->ip_config.ipv6_link_local_addr,
303 ipaddr));
304 options |= PING_IPV6_LINKLOCAL_ADDR;
305 rval = qla4xxx_ping_iocb(ha, options, payload_size,
306 pid, ipaddr);
307 } else {
308 ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
309 "not supported\n", __func__, iface_num);
310 rval = -ENOSYS;
311 goto exit_send_ping;
312 }
313
314 /*
315 * If ping using LinkLocal address fails, try ping using
316 * IPv6 address
317 */
318 if (rval != QLA_SUCCESS) {
319 options &= ~PING_IPV6_LINKLOCAL_ADDR;
320 if (iface_num == 0) {
321 options |= PING_IPV6_ADDR0;
322 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
323 "Ping src: %pI6 "
324 "dest: %pI6\n", __func__,
325 &ha->ip_config.ipv6_addr0,
326 ipaddr));
327 } else if (iface_num == 1) {
328 options |= PING_IPV6_ADDR1;
329 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
330 "Ping src: %pI6 "
331 "dest: %pI6\n", __func__,
332 &ha->ip_config.ipv6_addr1,
333 ipaddr));
334 }
335 rval = qla4xxx_ping_iocb(ha, options, payload_size,
336 pid, ipaddr);
337 if (rval)
338 rval = -EINVAL;
339 }
340 } else
341 rval = -ENOSYS;
342 exit_send_ping:
343 return rval;
344 }
345
346 static umode_t qla4_attr_is_visible(int param_type, int param)
347 {
348 switch (param_type) {
349 case ISCSI_HOST_PARAM:
350 switch (param) {
351 case ISCSI_HOST_PARAM_HWADDRESS:
352 case ISCSI_HOST_PARAM_IPADDRESS:
353 case ISCSI_HOST_PARAM_INITIATOR_NAME:
354 case ISCSI_HOST_PARAM_PORT_STATE:
355 case ISCSI_HOST_PARAM_PORT_SPEED:
356 return S_IRUGO;
357 default:
358 return 0;
359 }
360 case ISCSI_PARAM:
361 switch (param) {
362 case ISCSI_PARAM_PERSISTENT_ADDRESS:
363 case ISCSI_PARAM_PERSISTENT_PORT:
364 case ISCSI_PARAM_CONN_ADDRESS:
365 case ISCSI_PARAM_CONN_PORT:
366 case ISCSI_PARAM_TARGET_NAME:
367 case ISCSI_PARAM_TPGT:
368 case ISCSI_PARAM_TARGET_ALIAS:
369 case ISCSI_PARAM_MAX_BURST:
370 case ISCSI_PARAM_MAX_R2T:
371 case ISCSI_PARAM_FIRST_BURST:
372 case ISCSI_PARAM_MAX_RECV_DLENGTH:
373 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
374 case ISCSI_PARAM_IFACE_NAME:
375 case ISCSI_PARAM_CHAP_OUT_IDX:
376 case ISCSI_PARAM_CHAP_IN_IDX:
377 case ISCSI_PARAM_USERNAME:
378 case ISCSI_PARAM_PASSWORD:
379 case ISCSI_PARAM_USERNAME_IN:
380 case ISCSI_PARAM_PASSWORD_IN:
381 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
382 case ISCSI_PARAM_DISCOVERY_SESS:
383 case ISCSI_PARAM_PORTAL_TYPE:
384 case ISCSI_PARAM_CHAP_AUTH_EN:
385 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
386 case ISCSI_PARAM_BIDI_CHAP_EN:
387 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
388 case ISCSI_PARAM_DEF_TIME2WAIT:
389 case ISCSI_PARAM_DEF_TIME2RETAIN:
390 case ISCSI_PARAM_HDRDGST_EN:
391 case ISCSI_PARAM_DATADGST_EN:
392 case ISCSI_PARAM_INITIAL_R2T_EN:
393 case ISCSI_PARAM_IMM_DATA_EN:
394 case ISCSI_PARAM_PDU_INORDER_EN:
395 case ISCSI_PARAM_DATASEQ_INORDER_EN:
396 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
397 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
398 case ISCSI_PARAM_TCP_WSF_DISABLE:
399 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
400 case ISCSI_PARAM_TCP_TIMER_SCALE:
401 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
402 case ISCSI_PARAM_TCP_XMIT_WSF:
403 case ISCSI_PARAM_TCP_RECV_WSF:
404 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
405 case ISCSI_PARAM_IPV4_TOS:
406 case ISCSI_PARAM_IPV6_TC:
407 case ISCSI_PARAM_IPV6_FLOW_LABEL:
408 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
409 case ISCSI_PARAM_KEEPALIVE_TMO:
410 case ISCSI_PARAM_LOCAL_PORT:
411 case ISCSI_PARAM_ISID:
412 case ISCSI_PARAM_TSID:
413 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
414 case ISCSI_PARAM_ERL:
415 case ISCSI_PARAM_STATSN:
416 case ISCSI_PARAM_EXP_STATSN:
417 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
418 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
419 return S_IRUGO;
420 default:
421 return 0;
422 }
423 case ISCSI_NET_PARAM:
424 switch (param) {
425 case ISCSI_NET_PARAM_IPV4_ADDR:
426 case ISCSI_NET_PARAM_IPV4_SUBNET:
427 case ISCSI_NET_PARAM_IPV4_GW:
428 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
429 case ISCSI_NET_PARAM_IFACE_ENABLE:
430 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
431 case ISCSI_NET_PARAM_IPV6_ADDR:
432 case ISCSI_NET_PARAM_IPV6_ROUTER:
433 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
434 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
435 case ISCSI_NET_PARAM_VLAN_ID:
436 case ISCSI_NET_PARAM_VLAN_PRIORITY:
437 case ISCSI_NET_PARAM_VLAN_ENABLED:
438 case ISCSI_NET_PARAM_MTU:
439 case ISCSI_NET_PARAM_PORT:
440 return S_IRUGO;
441 default:
442 return 0;
443 }
444 case ISCSI_FLASHNODE_PARAM:
445 switch (param) {
446 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
447 case ISCSI_FLASHNODE_PORTAL_TYPE:
448 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
449 case ISCSI_FLASHNODE_DISCOVERY_SESS:
450 case ISCSI_FLASHNODE_ENTRY_EN:
451 case ISCSI_FLASHNODE_HDR_DGST_EN:
452 case ISCSI_FLASHNODE_DATA_DGST_EN:
453 case ISCSI_FLASHNODE_IMM_DATA_EN:
454 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
455 case ISCSI_FLASHNODE_DATASEQ_INORDER:
456 case ISCSI_FLASHNODE_PDU_INORDER:
457 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
458 case ISCSI_FLASHNODE_SNACK_REQ_EN:
459 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
460 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
461 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
462 case ISCSI_FLASHNODE_ERL:
463 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
464 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
465 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
466 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
467 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
468 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
469 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
470 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
471 case ISCSI_FLASHNODE_FIRST_BURST:
472 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
473 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
474 case ISCSI_FLASHNODE_MAX_R2T:
475 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
476 case ISCSI_FLASHNODE_ISID:
477 case ISCSI_FLASHNODE_TSID:
478 case ISCSI_FLASHNODE_PORT:
479 case ISCSI_FLASHNODE_MAX_BURST:
480 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
481 case ISCSI_FLASHNODE_IPADDR:
482 case ISCSI_FLASHNODE_ALIAS:
483 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
484 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
485 case ISCSI_FLASHNODE_LOCAL_PORT:
486 case ISCSI_FLASHNODE_IPV4_TOS:
487 case ISCSI_FLASHNODE_IPV6_TC:
488 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
489 case ISCSI_FLASHNODE_NAME:
490 case ISCSI_FLASHNODE_TPGT:
491 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
492 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
493 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
494 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
495 case ISCSI_FLASHNODE_TCP_RECV_WSF:
496 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
497 case ISCSI_FLASHNODE_USERNAME:
498 case ISCSI_FLASHNODE_PASSWORD:
499 case ISCSI_FLASHNODE_STATSN:
500 case ISCSI_FLASHNODE_EXP_STATSN:
501 case ISCSI_FLASHNODE_IS_BOOT_TGT:
502 return S_IRUGO;
503 default:
504 return 0;
505 }
506 }
507
508 return 0;
509 }
510
511 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
512 uint32_t *num_entries, char *buf)
513 {
514 struct scsi_qla_host *ha = to_qla_host(shost);
515 struct ql4_chap_table *chap_table;
516 struct iscsi_chap_rec *chap_rec;
517 int max_chap_entries = 0;
518 int valid_chap_entries = 0;
519 int ret = 0, i;
520
521 if (is_qla80XX(ha))
522 max_chap_entries = (ha->hw.flt_chap_size / 2) /
523 sizeof(struct ql4_chap_table);
524 else
525 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
526
527 ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
528 __func__, *num_entries, chap_tbl_idx);
529
530 if (!buf) {
531 ret = -ENOMEM;
532 goto exit_get_chap_list;
533 }
534
535 chap_rec = (struct iscsi_chap_rec *) buf;
536 mutex_lock(&ha->chap_sem);
537 for (i = chap_tbl_idx; i < max_chap_entries; i++) {
538 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
539 if (chap_table->cookie !=
540 __constant_cpu_to_le16(CHAP_VALID_COOKIE))
541 continue;
542
543 chap_rec->chap_tbl_idx = i;
544 strncpy(chap_rec->username, chap_table->name,
545 ISCSI_CHAP_AUTH_NAME_MAX_LEN);
546 strncpy(chap_rec->password, chap_table->secret,
547 QL4_CHAP_MAX_SECRET_LEN);
548 chap_rec->password_length = chap_table->secret_len;
549
550 if (chap_table->flags & BIT_7) /* local */
551 chap_rec->chap_type = CHAP_TYPE_OUT;
552
553 if (chap_table->flags & BIT_6) /* peer */
554 chap_rec->chap_type = CHAP_TYPE_IN;
555
556 chap_rec++;
557
558 valid_chap_entries++;
559 if (valid_chap_entries == *num_entries)
560 break;
561 else
562 continue;
563 }
564 mutex_unlock(&ha->chap_sem);
565
566 exit_get_chap_list:
567 ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
568 __func__, valid_chap_entries);
569 *num_entries = valid_chap_entries;
570 return ret;
571 }
572
573 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
574 {
575 int ret = 0;
576 uint16_t *chap_tbl_idx = (uint16_t *) data;
577 struct iscsi_cls_session *cls_session;
578 struct iscsi_session *sess;
579 struct ddb_entry *ddb_entry;
580
581 if (!iscsi_is_session_dev(dev))
582 goto exit_is_chap_active;
583
584 cls_session = iscsi_dev_to_session(dev);
585 sess = cls_session->dd_data;
586 ddb_entry = sess->dd_data;
587
588 if (iscsi_session_chkready(cls_session))
589 goto exit_is_chap_active;
590
591 if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
592 ret = 1;
593
594 exit_is_chap_active:
595 return ret;
596 }
597
598 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
599 uint16_t chap_tbl_idx)
600 {
601 int ret = 0;
602
603 ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
604 __qla4xxx_is_chap_active);
605
606 return ret;
607 }
608
609 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
610 {
611 struct scsi_qla_host *ha = to_qla_host(shost);
612 struct ql4_chap_table *chap_table;
613 dma_addr_t chap_dma;
614 int max_chap_entries = 0;
615 uint32_t offset = 0;
616 uint32_t chap_size;
617 int ret = 0;
618
619 chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
620 if (chap_table == NULL)
621 return -ENOMEM;
622
623 memset(chap_table, 0, sizeof(struct ql4_chap_table));
624
625 if (is_qla80XX(ha))
626 max_chap_entries = (ha->hw.flt_chap_size / 2) /
627 sizeof(struct ql4_chap_table);
628 else
629 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
630
631 if (chap_tbl_idx > max_chap_entries) {
632 ret = -EINVAL;
633 goto exit_delete_chap;
634 }
635
636 /* Check if chap index is in use.
637 * If chap is in use don't delet chap entry */
638 ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
639 if (ret) {
640 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
641 "delete from flash\n", chap_tbl_idx);
642 ret = -EBUSY;
643 goto exit_delete_chap;
644 }
645
646 chap_size = sizeof(struct ql4_chap_table);
647 if (is_qla40XX(ha))
648 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
649 else {
650 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
651 /* flt_chap_size is CHAP table size for both ports
652 * so divide it by 2 to calculate the offset for second port
653 */
654 if (ha->port_num == 1)
655 offset += (ha->hw.flt_chap_size / 2);
656 offset += (chap_tbl_idx * chap_size);
657 }
658
659 ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
660 if (ret != QLA_SUCCESS) {
661 ret = -EINVAL;
662 goto exit_delete_chap;
663 }
664
665 DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
666 __le16_to_cpu(chap_table->cookie)));
667
668 if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
669 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
670 goto exit_delete_chap;
671 }
672
673 chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
674
675 offset = FLASH_CHAP_OFFSET |
676 (chap_tbl_idx * sizeof(struct ql4_chap_table));
677 ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
678 FLASH_OPT_RMW_COMMIT);
679 if (ret == QLA_SUCCESS && ha->chap_list) {
680 mutex_lock(&ha->chap_sem);
681 /* Update ha chap_list cache */
682 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
683 chap_table, sizeof(struct ql4_chap_table));
684 mutex_unlock(&ha->chap_sem);
685 }
686 if (ret != QLA_SUCCESS)
687 ret = -EINVAL;
688
689 exit_delete_chap:
690 dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
691 return ret;
692 }
693
694 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
695 enum iscsi_param_type param_type,
696 int param, char *buf)
697 {
698 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
699 struct scsi_qla_host *ha = to_qla_host(shost);
700 int len = -ENOSYS;
701
702 if (param_type != ISCSI_NET_PARAM)
703 return -ENOSYS;
704
705 switch (param) {
706 case ISCSI_NET_PARAM_IPV4_ADDR:
707 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
708 break;
709 case ISCSI_NET_PARAM_IPV4_SUBNET:
710 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
711 break;
712 case ISCSI_NET_PARAM_IPV4_GW:
713 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
714 break;
715 case ISCSI_NET_PARAM_IFACE_ENABLE:
716 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
717 len = sprintf(buf, "%s\n",
718 (ha->ip_config.ipv4_options &
719 IPOPT_IPV4_PROTOCOL_ENABLE) ?
720 "enabled" : "disabled");
721 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
722 len = sprintf(buf, "%s\n",
723 (ha->ip_config.ipv6_options &
724 IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
725 "enabled" : "disabled");
726 break;
727 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
728 len = sprintf(buf, "%s\n",
729 (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
730 "dhcp" : "static");
731 break;
732 case ISCSI_NET_PARAM_IPV6_ADDR:
733 if (iface->iface_num == 0)
734 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
735 if (iface->iface_num == 1)
736 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
737 break;
738 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
739 len = sprintf(buf, "%pI6\n",
740 &ha->ip_config.ipv6_link_local_addr);
741 break;
742 case ISCSI_NET_PARAM_IPV6_ROUTER:
743 len = sprintf(buf, "%pI6\n",
744 &ha->ip_config.ipv6_default_router_addr);
745 break;
746 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
747 len = sprintf(buf, "%s\n",
748 (ha->ip_config.ipv6_addl_options &
749 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
750 "nd" : "static");
751 break;
752 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
753 len = sprintf(buf, "%s\n",
754 (ha->ip_config.ipv6_addl_options &
755 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
756 "auto" : "static");
757 break;
758 case ISCSI_NET_PARAM_VLAN_ID:
759 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
760 len = sprintf(buf, "%d\n",
761 (ha->ip_config.ipv4_vlan_tag &
762 ISCSI_MAX_VLAN_ID));
763 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
764 len = sprintf(buf, "%d\n",
765 (ha->ip_config.ipv6_vlan_tag &
766 ISCSI_MAX_VLAN_ID));
767 break;
768 case ISCSI_NET_PARAM_VLAN_PRIORITY:
769 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
770 len = sprintf(buf, "%d\n",
771 ((ha->ip_config.ipv4_vlan_tag >> 13) &
772 ISCSI_MAX_VLAN_PRIORITY));
773 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
774 len = sprintf(buf, "%d\n",
775 ((ha->ip_config.ipv6_vlan_tag >> 13) &
776 ISCSI_MAX_VLAN_PRIORITY));
777 break;
778 case ISCSI_NET_PARAM_VLAN_ENABLED:
779 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
780 len = sprintf(buf, "%s\n",
781 (ha->ip_config.ipv4_options &
782 IPOPT_VLAN_TAGGING_ENABLE) ?
783 "enabled" : "disabled");
784 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
785 len = sprintf(buf, "%s\n",
786 (ha->ip_config.ipv6_options &
787 IPV6_OPT_VLAN_TAGGING_ENABLE) ?
788 "enabled" : "disabled");
789 break;
790 case ISCSI_NET_PARAM_MTU:
791 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
792 break;
793 case ISCSI_NET_PARAM_PORT:
794 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
795 len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
796 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
797 len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
798 break;
799 default:
800 len = -ENOSYS;
801 }
802
803 return len;
804 }
805
806 static struct iscsi_endpoint *
807 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
808 int non_blocking)
809 {
810 int ret;
811 struct iscsi_endpoint *ep;
812 struct qla_endpoint *qla_ep;
813 struct scsi_qla_host *ha;
814 struct sockaddr_in *addr;
815 struct sockaddr_in6 *addr6;
816
817 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
818 if (!shost) {
819 ret = -ENXIO;
820 printk(KERN_ERR "%s: shost is NULL\n",
821 __func__);
822 return ERR_PTR(ret);
823 }
824
825 ha = iscsi_host_priv(shost);
826
827 ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
828 if (!ep) {
829 ret = -ENOMEM;
830 return ERR_PTR(ret);
831 }
832
833 qla_ep = ep->dd_data;
834 memset(qla_ep, 0, sizeof(struct qla_endpoint));
835 if (dst_addr->sa_family == AF_INET) {
836 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
837 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
838 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
839 (char *)&addr->sin_addr));
840 } else if (dst_addr->sa_family == AF_INET6) {
841 memcpy(&qla_ep->dst_addr, dst_addr,
842 sizeof(struct sockaddr_in6));
843 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
844 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
845 (char *)&addr6->sin6_addr));
846 }
847
848 qla_ep->host = shost;
849
850 return ep;
851 }
852
853 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
854 {
855 struct qla_endpoint *qla_ep;
856 struct scsi_qla_host *ha;
857 int ret = 0;
858
859 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
860 qla_ep = ep->dd_data;
861 ha = to_qla_host(qla_ep->host);
862
863 if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
864 ret = 1;
865
866 return ret;
867 }
868
869 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
870 {
871 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
872 iscsi_destroy_endpoint(ep);
873 }
874
875 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
876 enum iscsi_param param,
877 char *buf)
878 {
879 struct qla_endpoint *qla_ep = ep->dd_data;
880 struct sockaddr *dst_addr;
881
882 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
883
884 switch (param) {
885 case ISCSI_PARAM_CONN_PORT:
886 case ISCSI_PARAM_CONN_ADDRESS:
887 if (!qla_ep)
888 return -ENOTCONN;
889
890 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
891 if (!dst_addr)
892 return -ENOTCONN;
893
894 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
895 &qla_ep->dst_addr, param, buf);
896 default:
897 return -ENOSYS;
898 }
899 }
900
901 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
902 struct iscsi_stats *stats)
903 {
904 struct iscsi_session *sess;
905 struct iscsi_cls_session *cls_sess;
906 struct ddb_entry *ddb_entry;
907 struct scsi_qla_host *ha;
908 struct ql_iscsi_stats *ql_iscsi_stats;
909 int stats_size;
910 int ret;
911 dma_addr_t iscsi_stats_dma;
912
913 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
914
915 cls_sess = iscsi_conn_to_session(cls_conn);
916 sess = cls_sess->dd_data;
917 ddb_entry = sess->dd_data;
918 ha = ddb_entry->ha;
919
920 stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
921 /* Allocate memory */
922 ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
923 &iscsi_stats_dma, GFP_KERNEL);
924 if (!ql_iscsi_stats) {
925 ql4_printk(KERN_ERR, ha,
926 "Unable to allocate memory for iscsi stats\n");
927 goto exit_get_stats;
928 }
929
930 ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
931 iscsi_stats_dma);
932 if (ret != QLA_SUCCESS) {
933 ql4_printk(KERN_ERR, ha,
934 "Unable to retrieve iscsi stats\n");
935 goto free_stats;
936 }
937
938 /* octets */
939 stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
940 stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
941 /* xmit pdus */
942 stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
943 stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
944 stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
945 stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
946 stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
947 stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
948 stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
949 stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
950 /* recv pdus */
951 stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
952 stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
953 stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
954 stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
955 stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
956 stats->logoutrsp_pdus =
957 le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
958 stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
959 stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
960 stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
961
962 free_stats:
963 dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
964 iscsi_stats_dma);
965 exit_get_stats:
966 return;
967 }
968
969 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
970 {
971 struct iscsi_cls_session *session;
972 struct iscsi_session *sess;
973 unsigned long flags;
974 enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
975
976 session = starget_to_session(scsi_target(sc->device));
977 sess = session->dd_data;
978
979 spin_lock_irqsave(&session->lock, flags);
980 if (session->state == ISCSI_SESSION_FAILED)
981 ret = BLK_EH_RESET_TIMER;
982 spin_unlock_irqrestore(&session->lock, flags);
983
984 return ret;
985 }
986
987 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
988 {
989 struct scsi_qla_host *ha = to_qla_host(shost);
990 struct iscsi_cls_host *ihost = shost->shost_data;
991 uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
992
993 qla4xxx_get_firmware_state(ha);
994
995 switch (ha->addl_fw_state & 0x0F00) {
996 case FW_ADDSTATE_LINK_SPEED_10MBPS:
997 speed = ISCSI_PORT_SPEED_10MBPS;
998 break;
999 case FW_ADDSTATE_LINK_SPEED_100MBPS:
1000 speed = ISCSI_PORT_SPEED_100MBPS;
1001 break;
1002 case FW_ADDSTATE_LINK_SPEED_1GBPS:
1003 speed = ISCSI_PORT_SPEED_1GBPS;
1004 break;
1005 case FW_ADDSTATE_LINK_SPEED_10GBPS:
1006 speed = ISCSI_PORT_SPEED_10GBPS;
1007 break;
1008 }
1009 ihost->port_speed = speed;
1010 }
1011
1012 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1013 {
1014 struct scsi_qla_host *ha = to_qla_host(shost);
1015 struct iscsi_cls_host *ihost = shost->shost_data;
1016 uint32_t state = ISCSI_PORT_STATE_DOWN;
1017
1018 if (test_bit(AF_LINK_UP, &ha->flags))
1019 state = ISCSI_PORT_STATE_UP;
1020
1021 ihost->port_state = state;
1022 }
1023
1024 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1025 enum iscsi_host_param param, char *buf)
1026 {
1027 struct scsi_qla_host *ha = to_qla_host(shost);
1028 int len;
1029
1030 switch (param) {
1031 case ISCSI_HOST_PARAM_HWADDRESS:
1032 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1033 break;
1034 case ISCSI_HOST_PARAM_IPADDRESS:
1035 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1036 break;
1037 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1038 len = sprintf(buf, "%s\n", ha->name_string);
1039 break;
1040 case ISCSI_HOST_PARAM_PORT_STATE:
1041 qla4xxx_set_port_state(shost);
1042 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1043 break;
1044 case ISCSI_HOST_PARAM_PORT_SPEED:
1045 qla4xxx_set_port_speed(shost);
1046 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1047 break;
1048 default:
1049 return -ENOSYS;
1050 }
1051
1052 return len;
1053 }
1054
1055 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1056 {
1057 if (ha->iface_ipv4)
1058 return;
1059
1060 /* IPv4 */
1061 ha->iface_ipv4 = iscsi_create_iface(ha->host,
1062 &qla4xxx_iscsi_transport,
1063 ISCSI_IFACE_TYPE_IPV4, 0, 0);
1064 if (!ha->iface_ipv4)
1065 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1066 "iface0.\n");
1067 }
1068
1069 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1070 {
1071 if (!ha->iface_ipv6_0)
1072 /* IPv6 iface-0 */
1073 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1074 &qla4xxx_iscsi_transport,
1075 ISCSI_IFACE_TYPE_IPV6, 0,
1076 0);
1077 if (!ha->iface_ipv6_0)
1078 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1079 "iface0.\n");
1080
1081 if (!ha->iface_ipv6_1)
1082 /* IPv6 iface-1 */
1083 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1084 &qla4xxx_iscsi_transport,
1085 ISCSI_IFACE_TYPE_IPV6, 1,
1086 0);
1087 if (!ha->iface_ipv6_1)
1088 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1089 "iface1.\n");
1090 }
1091
1092 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1093 {
1094 if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1095 qla4xxx_create_ipv4_iface(ha);
1096
1097 if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1098 qla4xxx_create_ipv6_iface(ha);
1099 }
1100
1101 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1102 {
1103 if (ha->iface_ipv4) {
1104 iscsi_destroy_iface(ha->iface_ipv4);
1105 ha->iface_ipv4 = NULL;
1106 }
1107 }
1108
1109 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1110 {
1111 if (ha->iface_ipv6_0) {
1112 iscsi_destroy_iface(ha->iface_ipv6_0);
1113 ha->iface_ipv6_0 = NULL;
1114 }
1115 if (ha->iface_ipv6_1) {
1116 iscsi_destroy_iface(ha->iface_ipv6_1);
1117 ha->iface_ipv6_1 = NULL;
1118 }
1119 }
1120
1121 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1122 {
1123 qla4xxx_destroy_ipv4_iface(ha);
1124 qla4xxx_destroy_ipv6_iface(ha);
1125 }
1126
1127 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1128 struct iscsi_iface_param_info *iface_param,
1129 struct addr_ctrl_blk *init_fw_cb)
1130 {
1131 /*
1132 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1133 * iface_num 1 is valid only for IPv6 Addr.
1134 */
1135 switch (iface_param->param) {
1136 case ISCSI_NET_PARAM_IPV6_ADDR:
1137 if (iface_param->iface_num & 0x1)
1138 /* IPv6 Addr 1 */
1139 memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1140 sizeof(init_fw_cb->ipv6_addr1));
1141 else
1142 /* IPv6 Addr 0 */
1143 memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1144 sizeof(init_fw_cb->ipv6_addr0));
1145 break;
1146 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1147 if (iface_param->iface_num & 0x1)
1148 break;
1149 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1150 sizeof(init_fw_cb->ipv6_if_id));
1151 break;
1152 case ISCSI_NET_PARAM_IPV6_ROUTER:
1153 if (iface_param->iface_num & 0x1)
1154 break;
1155 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1156 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1157 break;
1158 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1159 /* Autocfg applies to even interface */
1160 if (iface_param->iface_num & 0x1)
1161 break;
1162
1163 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1164 init_fw_cb->ipv6_addtl_opts &=
1165 cpu_to_le16(
1166 ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1167 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1168 init_fw_cb->ipv6_addtl_opts |=
1169 cpu_to_le16(
1170 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1171 else
1172 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1173 "IPv6 addr\n");
1174 break;
1175 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1176 /* Autocfg applies to even interface */
1177 if (iface_param->iface_num & 0x1)
1178 break;
1179
1180 if (iface_param->value[0] ==
1181 ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1182 init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1183 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1184 else if (iface_param->value[0] ==
1185 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1186 init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1187 ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1188 else
1189 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1190 "IPv6 linklocal addr\n");
1191 break;
1192 case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1193 /* Autocfg applies to even interface */
1194 if (iface_param->iface_num & 0x1)
1195 break;
1196
1197 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1198 memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1199 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1200 break;
1201 case ISCSI_NET_PARAM_IFACE_ENABLE:
1202 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1203 init_fw_cb->ipv6_opts |=
1204 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1205 qla4xxx_create_ipv6_iface(ha);
1206 } else {
1207 init_fw_cb->ipv6_opts &=
1208 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1209 0xFFFF);
1210 qla4xxx_destroy_ipv6_iface(ha);
1211 }
1212 break;
1213 case ISCSI_NET_PARAM_VLAN_TAG:
1214 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1215 break;
1216 init_fw_cb->ipv6_vlan_tag =
1217 cpu_to_be16(*(uint16_t *)iface_param->value);
1218 break;
1219 case ISCSI_NET_PARAM_VLAN_ENABLED:
1220 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1221 init_fw_cb->ipv6_opts |=
1222 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1223 else
1224 init_fw_cb->ipv6_opts &=
1225 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1226 break;
1227 case ISCSI_NET_PARAM_MTU:
1228 init_fw_cb->eth_mtu_size =
1229 cpu_to_le16(*(uint16_t *)iface_param->value);
1230 break;
1231 case ISCSI_NET_PARAM_PORT:
1232 /* Autocfg applies to even interface */
1233 if (iface_param->iface_num & 0x1)
1234 break;
1235
1236 init_fw_cb->ipv6_port =
1237 cpu_to_le16(*(uint16_t *)iface_param->value);
1238 break;
1239 default:
1240 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1241 iface_param->param);
1242 break;
1243 }
1244 }
1245
1246 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1247 struct iscsi_iface_param_info *iface_param,
1248 struct addr_ctrl_blk *init_fw_cb)
1249 {
1250 switch (iface_param->param) {
1251 case ISCSI_NET_PARAM_IPV4_ADDR:
1252 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1253 sizeof(init_fw_cb->ipv4_addr));
1254 break;
1255 case ISCSI_NET_PARAM_IPV4_SUBNET:
1256 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1257 sizeof(init_fw_cb->ipv4_subnet));
1258 break;
1259 case ISCSI_NET_PARAM_IPV4_GW:
1260 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1261 sizeof(init_fw_cb->ipv4_gw_addr));
1262 break;
1263 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1264 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1265 init_fw_cb->ipv4_tcp_opts |=
1266 cpu_to_le16(TCPOPT_DHCP_ENABLE);
1267 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1268 init_fw_cb->ipv4_tcp_opts &=
1269 cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1270 else
1271 ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1272 break;
1273 case ISCSI_NET_PARAM_IFACE_ENABLE:
1274 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1275 init_fw_cb->ipv4_ip_opts |=
1276 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1277 qla4xxx_create_ipv4_iface(ha);
1278 } else {
1279 init_fw_cb->ipv4_ip_opts &=
1280 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1281 0xFFFF);
1282 qla4xxx_destroy_ipv4_iface(ha);
1283 }
1284 break;
1285 case ISCSI_NET_PARAM_VLAN_TAG:
1286 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1287 break;
1288 init_fw_cb->ipv4_vlan_tag =
1289 cpu_to_be16(*(uint16_t *)iface_param->value);
1290 break;
1291 case ISCSI_NET_PARAM_VLAN_ENABLED:
1292 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1293 init_fw_cb->ipv4_ip_opts |=
1294 cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1295 else
1296 init_fw_cb->ipv4_ip_opts &=
1297 cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1298 break;
1299 case ISCSI_NET_PARAM_MTU:
1300 init_fw_cb->eth_mtu_size =
1301 cpu_to_le16(*(uint16_t *)iface_param->value);
1302 break;
1303 case ISCSI_NET_PARAM_PORT:
1304 init_fw_cb->ipv4_port =
1305 cpu_to_le16(*(uint16_t *)iface_param->value);
1306 break;
1307 default:
1308 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1309 iface_param->param);
1310 break;
1311 }
1312 }
1313
1314 static void
1315 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1316 {
1317 struct addr_ctrl_blk_def *acb;
1318 acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1319 memset(acb->reserved1, 0, sizeof(acb->reserved1));
1320 memset(acb->reserved2, 0, sizeof(acb->reserved2));
1321 memset(acb->reserved3, 0, sizeof(acb->reserved3));
1322 memset(acb->reserved4, 0, sizeof(acb->reserved4));
1323 memset(acb->reserved5, 0, sizeof(acb->reserved5));
1324 memset(acb->reserved6, 0, sizeof(acb->reserved6));
1325 memset(acb->reserved7, 0, sizeof(acb->reserved7));
1326 memset(acb->reserved8, 0, sizeof(acb->reserved8));
1327 memset(acb->reserved9, 0, sizeof(acb->reserved9));
1328 memset(acb->reserved10, 0, sizeof(acb->reserved10));
1329 memset(acb->reserved11, 0, sizeof(acb->reserved11));
1330 memset(acb->reserved12, 0, sizeof(acb->reserved12));
1331 memset(acb->reserved13, 0, sizeof(acb->reserved13));
1332 memset(acb->reserved14, 0, sizeof(acb->reserved14));
1333 memset(acb->reserved15, 0, sizeof(acb->reserved15));
1334 }
1335
1336 static int
1337 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1338 {
1339 struct scsi_qla_host *ha = to_qla_host(shost);
1340 int rval = 0;
1341 struct iscsi_iface_param_info *iface_param = NULL;
1342 struct addr_ctrl_blk *init_fw_cb = NULL;
1343 dma_addr_t init_fw_cb_dma;
1344 uint32_t mbox_cmd[MBOX_REG_COUNT];
1345 uint32_t mbox_sts[MBOX_REG_COUNT];
1346 uint32_t rem = len;
1347 struct nlattr *attr;
1348
1349 init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1350 sizeof(struct addr_ctrl_blk),
1351 &init_fw_cb_dma, GFP_KERNEL);
1352 if (!init_fw_cb) {
1353 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1354 __func__);
1355 return -ENOMEM;
1356 }
1357
1358 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1359 memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1360 memset(&mbox_sts, 0, sizeof(mbox_sts));
1361
1362 if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1363 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1364 rval = -EIO;
1365 goto exit_init_fw_cb;
1366 }
1367
1368 nla_for_each_attr(attr, data, len, rem) {
1369 iface_param = nla_data(attr);
1370
1371 if (iface_param->param_type != ISCSI_NET_PARAM)
1372 continue;
1373
1374 switch (iface_param->iface_type) {
1375 case ISCSI_IFACE_TYPE_IPV4:
1376 switch (iface_param->iface_num) {
1377 case 0:
1378 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1379 break;
1380 default:
1381 /* Cannot have more than one IPv4 interface */
1382 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1383 "number = %d\n",
1384 iface_param->iface_num);
1385 break;
1386 }
1387 break;
1388 case ISCSI_IFACE_TYPE_IPV6:
1389 switch (iface_param->iface_num) {
1390 case 0:
1391 case 1:
1392 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1393 break;
1394 default:
1395 /* Cannot have more than two IPv6 interface */
1396 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1397 "number = %d\n",
1398 iface_param->iface_num);
1399 break;
1400 }
1401 break;
1402 default:
1403 ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1404 break;
1405 }
1406 }
1407
1408 init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1409
1410 rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1411 sizeof(struct addr_ctrl_blk),
1412 FLASH_OPT_RMW_COMMIT);
1413 if (rval != QLA_SUCCESS) {
1414 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1415 __func__);
1416 rval = -EIO;
1417 goto exit_init_fw_cb;
1418 }
1419
1420 rval = qla4xxx_disable_acb(ha);
1421 if (rval != QLA_SUCCESS) {
1422 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1423 __func__);
1424 rval = -EIO;
1425 goto exit_init_fw_cb;
1426 }
1427
1428 wait_for_completion_timeout(&ha->disable_acb_comp,
1429 DISABLE_ACB_TOV * HZ);
1430
1431 qla4xxx_initcb_to_acb(init_fw_cb);
1432
1433 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1434 if (rval != QLA_SUCCESS) {
1435 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1436 __func__);
1437 rval = -EIO;
1438 goto exit_init_fw_cb;
1439 }
1440
1441 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1442 qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1443 init_fw_cb_dma);
1444
1445 exit_init_fw_cb:
1446 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1447 init_fw_cb, init_fw_cb_dma);
1448
1449 return rval;
1450 }
1451
1452 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1453 enum iscsi_param param, char *buf)
1454 {
1455 struct iscsi_session *sess = cls_sess->dd_data;
1456 struct ddb_entry *ddb_entry = sess->dd_data;
1457 struct scsi_qla_host *ha = ddb_entry->ha;
1458 int rval, len;
1459 uint16_t idx;
1460
1461 switch (param) {
1462 case ISCSI_PARAM_CHAP_IN_IDX:
1463 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1464 sess->password_in, BIDI_CHAP,
1465 &idx);
1466 if (rval)
1467 len = sprintf(buf, "\n");
1468 else
1469 len = sprintf(buf, "%hu\n", idx);
1470 break;
1471 case ISCSI_PARAM_CHAP_OUT_IDX:
1472 rval = qla4xxx_get_chap_index(ha, sess->username,
1473 sess->password, LOCAL_CHAP,
1474 &idx);
1475 if (rval)
1476 len = sprintf(buf, "\n");
1477 else
1478 len = sprintf(buf, "%hu\n", idx);
1479 break;
1480 default:
1481 return iscsi_session_get_param(cls_sess, param, buf);
1482 }
1483
1484 return len;
1485 }
1486
1487 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1488 enum iscsi_param param, char *buf)
1489 {
1490 struct iscsi_conn *conn;
1491 struct qla_conn *qla_conn;
1492 struct sockaddr *dst_addr;
1493 int len = 0;
1494
1495 conn = cls_conn->dd_data;
1496 qla_conn = conn->dd_data;
1497 dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1498
1499 switch (param) {
1500 case ISCSI_PARAM_CONN_PORT:
1501 case ISCSI_PARAM_CONN_ADDRESS:
1502 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1503 dst_addr, param, buf);
1504 default:
1505 return iscsi_conn_get_param(cls_conn, param, buf);
1506 }
1507
1508 return len;
1509
1510 }
1511
1512 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1513 {
1514 uint32_t mbx_sts = 0;
1515 uint16_t tmp_ddb_index;
1516 int ret;
1517
1518 get_ddb_index:
1519 tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1520
1521 if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1522 DEBUG2(ql4_printk(KERN_INFO, ha,
1523 "Free DDB index not available\n"));
1524 ret = QLA_ERROR;
1525 goto exit_get_ddb_index;
1526 }
1527
1528 if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1529 goto get_ddb_index;
1530
1531 DEBUG2(ql4_printk(KERN_INFO, ha,
1532 "Found a free DDB index at %d\n", tmp_ddb_index));
1533 ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1534 if (ret == QLA_ERROR) {
1535 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1536 ql4_printk(KERN_INFO, ha,
1537 "DDB index = %d not available trying next\n",
1538 tmp_ddb_index);
1539 goto get_ddb_index;
1540 }
1541 DEBUG2(ql4_printk(KERN_INFO, ha,
1542 "Free FW DDB not available\n"));
1543 }
1544
1545 *ddb_index = tmp_ddb_index;
1546
1547 exit_get_ddb_index:
1548 return ret;
1549 }
1550
1551 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1552 struct ddb_entry *ddb_entry,
1553 char *existing_ipaddr,
1554 char *user_ipaddr)
1555 {
1556 uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1557 char formatted_ipaddr[DDB_IPADDR_LEN];
1558 int status = QLA_SUCCESS, ret = 0;
1559
1560 if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1561 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1562 '\0', NULL);
1563 if (ret == 0) {
1564 status = QLA_ERROR;
1565 goto out_match;
1566 }
1567 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1568 } else {
1569 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1570 '\0', NULL);
1571 if (ret == 0) {
1572 status = QLA_ERROR;
1573 goto out_match;
1574 }
1575 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1576 }
1577
1578 if (strcmp(existing_ipaddr, formatted_ipaddr))
1579 status = QLA_ERROR;
1580
1581 out_match:
1582 return status;
1583 }
1584
1585 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1586 struct iscsi_cls_conn *cls_conn)
1587 {
1588 int idx = 0, max_ddbs, rval;
1589 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1590 struct iscsi_session *sess, *existing_sess;
1591 struct iscsi_conn *conn, *existing_conn;
1592 struct ddb_entry *ddb_entry;
1593
1594 sess = cls_sess->dd_data;
1595 conn = cls_conn->dd_data;
1596
1597 if (sess->targetname == NULL ||
1598 conn->persistent_address == NULL ||
1599 conn->persistent_port == 0)
1600 return QLA_ERROR;
1601
1602 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1603 MAX_DEV_DB_ENTRIES;
1604
1605 for (idx = 0; idx < max_ddbs; idx++) {
1606 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1607 if (ddb_entry == NULL)
1608 continue;
1609
1610 if (ddb_entry->ddb_type != FLASH_DDB)
1611 continue;
1612
1613 existing_sess = ddb_entry->sess->dd_data;
1614 existing_conn = ddb_entry->conn->dd_data;
1615
1616 if (existing_sess->targetname == NULL ||
1617 existing_conn->persistent_address == NULL ||
1618 existing_conn->persistent_port == 0)
1619 continue;
1620
1621 DEBUG2(ql4_printk(KERN_INFO, ha,
1622 "IQN = %s User IQN = %s\n",
1623 existing_sess->targetname,
1624 sess->targetname));
1625
1626 DEBUG2(ql4_printk(KERN_INFO, ha,
1627 "IP = %s User IP = %s\n",
1628 existing_conn->persistent_address,
1629 conn->persistent_address));
1630
1631 DEBUG2(ql4_printk(KERN_INFO, ha,
1632 "Port = %d User Port = %d\n",
1633 existing_conn->persistent_port,
1634 conn->persistent_port));
1635
1636 if (strcmp(existing_sess->targetname, sess->targetname))
1637 continue;
1638 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1639 existing_conn->persistent_address,
1640 conn->persistent_address);
1641 if (rval == QLA_ERROR)
1642 continue;
1643 if (existing_conn->persistent_port != conn->persistent_port)
1644 continue;
1645 break;
1646 }
1647
1648 if (idx == max_ddbs)
1649 return QLA_ERROR;
1650
1651 DEBUG2(ql4_printk(KERN_INFO, ha,
1652 "Match found in fwdb sessions\n"));
1653 return QLA_SUCCESS;
1654 }
1655
1656 static struct iscsi_cls_session *
1657 qla4xxx_session_create(struct iscsi_endpoint *ep,
1658 uint16_t cmds_max, uint16_t qdepth,
1659 uint32_t initial_cmdsn)
1660 {
1661 struct iscsi_cls_session *cls_sess;
1662 struct scsi_qla_host *ha;
1663 struct qla_endpoint *qla_ep;
1664 struct ddb_entry *ddb_entry;
1665 uint16_t ddb_index;
1666 struct iscsi_session *sess;
1667 struct sockaddr *dst_addr;
1668 int ret;
1669
1670 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1671 if (!ep) {
1672 printk(KERN_ERR "qla4xxx: missing ep.\n");
1673 return NULL;
1674 }
1675
1676 qla_ep = ep->dd_data;
1677 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1678 ha = to_qla_host(qla_ep->host);
1679
1680 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1681 if (ret == QLA_ERROR)
1682 return NULL;
1683
1684 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1685 cmds_max, sizeof(struct ddb_entry),
1686 sizeof(struct ql4_task_data),
1687 initial_cmdsn, ddb_index);
1688 if (!cls_sess)
1689 return NULL;
1690
1691 sess = cls_sess->dd_data;
1692 ddb_entry = sess->dd_data;
1693 ddb_entry->fw_ddb_index = ddb_index;
1694 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1695 ddb_entry->ha = ha;
1696 ddb_entry->sess = cls_sess;
1697 ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1698 ddb_entry->ddb_change = qla4xxx_ddb_change;
1699 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1700 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1701 ha->tot_ddbs++;
1702
1703 return cls_sess;
1704 }
1705
1706 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1707 {
1708 struct iscsi_session *sess;
1709 struct ddb_entry *ddb_entry;
1710 struct scsi_qla_host *ha;
1711 unsigned long flags, wtime;
1712 struct dev_db_entry *fw_ddb_entry = NULL;
1713 dma_addr_t fw_ddb_entry_dma;
1714 uint32_t ddb_state;
1715 int ret;
1716
1717 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1718 sess = cls_sess->dd_data;
1719 ddb_entry = sess->dd_data;
1720 ha = ddb_entry->ha;
1721
1722 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1723 &fw_ddb_entry_dma, GFP_KERNEL);
1724 if (!fw_ddb_entry) {
1725 ql4_printk(KERN_ERR, ha,
1726 "%s: Unable to allocate dma buffer\n", __func__);
1727 goto destroy_session;
1728 }
1729
1730 wtime = jiffies + (HZ * LOGOUT_TOV);
1731 do {
1732 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1733 fw_ddb_entry, fw_ddb_entry_dma,
1734 NULL, NULL, &ddb_state, NULL,
1735 NULL, NULL);
1736 if (ret == QLA_ERROR)
1737 goto destroy_session;
1738
1739 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1740 (ddb_state == DDB_DS_SESSION_FAILED))
1741 goto destroy_session;
1742
1743 schedule_timeout_uninterruptible(HZ);
1744 } while ((time_after(wtime, jiffies)));
1745
1746 destroy_session:
1747 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1748
1749 spin_lock_irqsave(&ha->hardware_lock, flags);
1750 qla4xxx_free_ddb(ha, ddb_entry);
1751 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1752
1753 iscsi_session_teardown(cls_sess);
1754
1755 if (fw_ddb_entry)
1756 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1757 fw_ddb_entry, fw_ddb_entry_dma);
1758 }
1759
1760 static struct iscsi_cls_conn *
1761 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1762 {
1763 struct iscsi_cls_conn *cls_conn;
1764 struct iscsi_session *sess;
1765 struct ddb_entry *ddb_entry;
1766
1767 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1768 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1769 conn_idx);
1770 if (!cls_conn)
1771 return NULL;
1772
1773 sess = cls_sess->dd_data;
1774 ddb_entry = sess->dd_data;
1775 ddb_entry->conn = cls_conn;
1776
1777 return cls_conn;
1778 }
1779
1780 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1781 struct iscsi_cls_conn *cls_conn,
1782 uint64_t transport_fd, int is_leading)
1783 {
1784 struct iscsi_conn *conn;
1785 struct qla_conn *qla_conn;
1786 struct iscsi_endpoint *ep;
1787
1788 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1789
1790 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1791 return -EINVAL;
1792 ep = iscsi_lookup_endpoint(transport_fd);
1793 conn = cls_conn->dd_data;
1794 qla_conn = conn->dd_data;
1795 qla_conn->qla_ep = ep->dd_data;
1796 return 0;
1797 }
1798
1799 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1800 {
1801 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1802 struct iscsi_session *sess;
1803 struct ddb_entry *ddb_entry;
1804 struct scsi_qla_host *ha;
1805 struct dev_db_entry *fw_ddb_entry = NULL;
1806 dma_addr_t fw_ddb_entry_dma;
1807 uint32_t mbx_sts = 0;
1808 int ret = 0;
1809 int status = QLA_SUCCESS;
1810
1811 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1812 sess = cls_sess->dd_data;
1813 ddb_entry = sess->dd_data;
1814 ha = ddb_entry->ha;
1815
1816 /* Check if we have matching FW DDB, if yes then do not
1817 * login to this target. This could cause target to logout previous
1818 * connection
1819 */
1820 ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1821 if (ret == QLA_SUCCESS) {
1822 ql4_printk(KERN_INFO, ha,
1823 "Session already exist in FW.\n");
1824 ret = -EEXIST;
1825 goto exit_conn_start;
1826 }
1827
1828 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1829 &fw_ddb_entry_dma, GFP_KERNEL);
1830 if (!fw_ddb_entry) {
1831 ql4_printk(KERN_ERR, ha,
1832 "%s: Unable to allocate dma buffer\n", __func__);
1833 ret = -ENOMEM;
1834 goto exit_conn_start;
1835 }
1836
1837 ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1838 if (ret) {
1839 /* If iscsid is stopped and started then no need to do
1840 * set param again since ddb state will be already
1841 * active and FW does not allow set ddb to an
1842 * active session.
1843 */
1844 if (mbx_sts)
1845 if (ddb_entry->fw_ddb_device_state ==
1846 DDB_DS_SESSION_ACTIVE) {
1847 ddb_entry->unblock_sess(ddb_entry->sess);
1848 goto exit_set_param;
1849 }
1850
1851 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1852 __func__, ddb_entry->fw_ddb_index);
1853 goto exit_conn_start;
1854 }
1855
1856 status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1857 if (status == QLA_ERROR) {
1858 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1859 sess->targetname);
1860 ret = -EINVAL;
1861 goto exit_conn_start;
1862 }
1863
1864 if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1865 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1866
1867 DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1868 ddb_entry->fw_ddb_device_state));
1869
1870 exit_set_param:
1871 ret = 0;
1872
1873 exit_conn_start:
1874 if (fw_ddb_entry)
1875 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1876 fw_ddb_entry, fw_ddb_entry_dma);
1877 return ret;
1878 }
1879
1880 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1881 {
1882 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1883 struct iscsi_session *sess;
1884 struct scsi_qla_host *ha;
1885 struct ddb_entry *ddb_entry;
1886 int options;
1887
1888 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1889 sess = cls_sess->dd_data;
1890 ddb_entry = sess->dd_data;
1891 ha = ddb_entry->ha;
1892
1893 options = LOGOUT_OPTION_CLOSE_SESSION;
1894 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1895 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1896 }
1897
1898 static void qla4xxx_task_work(struct work_struct *wdata)
1899 {
1900 struct ql4_task_data *task_data;
1901 struct scsi_qla_host *ha;
1902 struct passthru_status *sts;
1903 struct iscsi_task *task;
1904 struct iscsi_hdr *hdr;
1905 uint8_t *data;
1906 uint32_t data_len;
1907 struct iscsi_conn *conn;
1908 int hdr_len;
1909 itt_t itt;
1910
1911 task_data = container_of(wdata, struct ql4_task_data, task_work);
1912 ha = task_data->ha;
1913 task = task_data->task;
1914 sts = &task_data->sts;
1915 hdr_len = sizeof(struct iscsi_hdr);
1916
1917 DEBUG3(printk(KERN_INFO "Status returned\n"));
1918 DEBUG3(qla4xxx_dump_buffer(sts, 64));
1919 DEBUG3(printk(KERN_INFO "Response buffer"));
1920 DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1921
1922 conn = task->conn;
1923
1924 switch (sts->completionStatus) {
1925 case PASSTHRU_STATUS_COMPLETE:
1926 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1927 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1928 itt = sts->handle;
1929 hdr->itt = itt;
1930 data = task_data->resp_buffer + hdr_len;
1931 data_len = task_data->resp_len - hdr_len;
1932 iscsi_complete_pdu(conn, hdr, data, data_len);
1933 break;
1934 default:
1935 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1936 sts->completionStatus);
1937 break;
1938 }
1939 return;
1940 }
1941
1942 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1943 {
1944 struct ql4_task_data *task_data;
1945 struct iscsi_session *sess;
1946 struct ddb_entry *ddb_entry;
1947 struct scsi_qla_host *ha;
1948 int hdr_len;
1949
1950 sess = task->conn->session;
1951 ddb_entry = sess->dd_data;
1952 ha = ddb_entry->ha;
1953 task_data = task->dd_data;
1954 memset(task_data, 0, sizeof(struct ql4_task_data));
1955
1956 if (task->sc) {
1957 ql4_printk(KERN_INFO, ha,
1958 "%s: SCSI Commands not implemented\n", __func__);
1959 return -EINVAL;
1960 }
1961
1962 hdr_len = sizeof(struct iscsi_hdr);
1963 task_data->ha = ha;
1964 task_data->task = task;
1965
1966 if (task->data_count) {
1967 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1968 task->data_count,
1969 PCI_DMA_TODEVICE);
1970 }
1971
1972 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1973 __func__, task->conn->max_recv_dlength, hdr_len));
1974
1975 task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1976 task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1977 task_data->resp_len,
1978 &task_data->resp_dma,
1979 GFP_ATOMIC);
1980 if (!task_data->resp_buffer)
1981 goto exit_alloc_pdu;
1982
1983 task_data->req_len = task->data_count + hdr_len;
1984 task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1985 task_data->req_len,
1986 &task_data->req_dma,
1987 GFP_ATOMIC);
1988 if (!task_data->req_buffer)
1989 goto exit_alloc_pdu;
1990
1991 task->hdr = task_data->req_buffer;
1992
1993 INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1994
1995 return 0;
1996
1997 exit_alloc_pdu:
1998 if (task_data->resp_buffer)
1999 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
2000 task_data->resp_buffer, task_data->resp_dma);
2001
2002 if (task_data->req_buffer)
2003 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
2004 task_data->req_buffer, task_data->req_dma);
2005 return -ENOMEM;
2006 }
2007
2008 static void qla4xxx_task_cleanup(struct iscsi_task *task)
2009 {
2010 struct ql4_task_data *task_data;
2011 struct iscsi_session *sess;
2012 struct ddb_entry *ddb_entry;
2013 struct scsi_qla_host *ha;
2014 int hdr_len;
2015
2016 hdr_len = sizeof(struct iscsi_hdr);
2017 sess = task->conn->session;
2018 ddb_entry = sess->dd_data;
2019 ha = ddb_entry->ha;
2020 task_data = task->dd_data;
2021
2022 if (task->data_count) {
2023 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
2024 task->data_count, PCI_DMA_TODEVICE);
2025 }
2026
2027 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
2028 __func__, task->conn->max_recv_dlength, hdr_len));
2029
2030 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
2031 task_data->resp_buffer, task_data->resp_dma);
2032 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
2033 task_data->req_buffer, task_data->req_dma);
2034 return;
2035 }
2036
2037 static int qla4xxx_task_xmit(struct iscsi_task *task)
2038 {
2039 struct scsi_cmnd *sc = task->sc;
2040 struct iscsi_session *sess = task->conn->session;
2041 struct ddb_entry *ddb_entry = sess->dd_data;
2042 struct scsi_qla_host *ha = ddb_entry->ha;
2043
2044 if (!sc)
2045 return qla4xxx_send_passthru0(task);
2046
2047 ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
2048 __func__);
2049 return -ENOSYS;
2050 }
2051
2052 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
2053 struct iscsi_bus_flash_conn *conn,
2054 struct dev_db_entry *fw_ddb_entry)
2055 {
2056 unsigned long options = 0;
2057 int rc = 0;
2058
2059 options = le16_to_cpu(fw_ddb_entry->options);
2060 conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2061 if (test_bit(OPT_IPV6_DEVICE, &options)) {
2062 rc = iscsi_switch_str_param(&sess->portal_type,
2063 PORTAL_TYPE_IPV6);
2064 if (rc)
2065 goto exit_copy;
2066 } else {
2067 rc = iscsi_switch_str_param(&sess->portal_type,
2068 PORTAL_TYPE_IPV4);
2069 if (rc)
2070 goto exit_copy;
2071 }
2072
2073 sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2074 &options);
2075 sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2076 sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
2077
2078 options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2079 conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2080 conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2081 sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2082 sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2083 sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2084 &options);
2085 sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2086 sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2087 conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
2088 sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2089 &options);
2090 sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2091 sess->discovery_auth_optional =
2092 test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2093 if (test_bit(ISCSIOPT_ERL1, &options))
2094 sess->erl |= BIT_1;
2095 if (test_bit(ISCSIOPT_ERL0, &options))
2096 sess->erl |= BIT_0;
2097
2098 options = le16_to_cpu(fw_ddb_entry->tcp_options);
2099 conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2100 conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2101 conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2102 if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2103 conn->tcp_timer_scale |= BIT_3;
2104 if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2105 conn->tcp_timer_scale |= BIT_2;
2106 if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2107 conn->tcp_timer_scale |= BIT_1;
2108
2109 conn->tcp_timer_scale >>= 1;
2110 conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2111
2112 options = le16_to_cpu(fw_ddb_entry->ip_options);
2113 conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2114
2115 conn->max_recv_dlength = BYTE_UNITS *
2116 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2117 conn->max_xmit_dlength = BYTE_UNITS *
2118 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2119 sess->first_burst = BYTE_UNITS *
2120 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2121 sess->max_burst = BYTE_UNITS *
2122 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2123 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2124 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2125 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2126 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2127 conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2128 conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2129 conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2130 conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
2131 conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
2132 conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2133 conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2134 conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2135 sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
2136 sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
2137 sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2138 sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2139
2140 sess->default_taskmgmt_timeout =
2141 le16_to_cpu(fw_ddb_entry->def_timeout);
2142 conn->port = le16_to_cpu(fw_ddb_entry->port);
2143
2144 options = le16_to_cpu(fw_ddb_entry->options);
2145 conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2146 if (!conn->ipaddress) {
2147 rc = -ENOMEM;
2148 goto exit_copy;
2149 }
2150
2151 conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2152 if (!conn->redirect_ipaddr) {
2153 rc = -ENOMEM;
2154 goto exit_copy;
2155 }
2156
2157 memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
2158 memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
2159
2160 if (test_bit(OPT_IPV6_DEVICE, &options)) {
2161 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
2162
2163 conn->link_local_ipv6_addr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2164 if (!conn->link_local_ipv6_addr) {
2165 rc = -ENOMEM;
2166 goto exit_copy;
2167 }
2168
2169 memcpy(conn->link_local_ipv6_addr,
2170 fw_ddb_entry->link_local_ipv6_addr, IPv6_ADDR_LEN);
2171 } else {
2172 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2173 }
2174
2175 if (fw_ddb_entry->iscsi_name[0]) {
2176 rc = iscsi_switch_str_param(&sess->targetname,
2177 (char *)fw_ddb_entry->iscsi_name);
2178 if (rc)
2179 goto exit_copy;
2180 }
2181
2182 if (fw_ddb_entry->iscsi_alias[0]) {
2183 rc = iscsi_switch_str_param(&sess->targetalias,
2184 (char *)fw_ddb_entry->iscsi_alias);
2185 if (rc)
2186 goto exit_copy;
2187 }
2188
2189 COPY_ISID(sess->isid, fw_ddb_entry->isid);
2190
2191 exit_copy:
2192 return rc;
2193 }
2194
2195 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
2196 struct iscsi_bus_flash_conn *conn,
2197 struct dev_db_entry *fw_ddb_entry)
2198 {
2199 uint16_t options;
2200 int rc = 0;
2201
2202 options = le16_to_cpu(fw_ddb_entry->options);
2203 SET_BITVAL(conn->is_fw_assigned_ipv6, options, BIT_11);
2204 if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2205 options |= BIT_8;
2206 else
2207 options &= ~BIT_8;
2208
2209 SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
2210 SET_BITVAL(sess->discovery_sess, options, BIT_4);
2211 SET_BITVAL(sess->entry_state, options, BIT_3);
2212 fw_ddb_entry->options = cpu_to_le16(options);
2213
2214 options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2215 SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
2216 SET_BITVAL(conn->datadgst_en, options, BIT_12);
2217 SET_BITVAL(sess->imm_data_en, options, BIT_11);
2218 SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
2219 SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
2220 SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
2221 SET_BITVAL(sess->chap_auth_en, options, BIT_7);
2222 SET_BITVAL(conn->snack_req_en, options, BIT_6);
2223 SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
2224 SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
2225 SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
2226 SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
2227 SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
2228 fw_ddb_entry->iscsi_options = cpu_to_le16(options);
2229
2230 options = le16_to_cpu(fw_ddb_entry->tcp_options);
2231 SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
2232 SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
2233 SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
2234 SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
2235 SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
2236 SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
2237 SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
2238 fw_ddb_entry->tcp_options = cpu_to_le16(options);
2239
2240 options = le16_to_cpu(fw_ddb_entry->ip_options);
2241 SET_BITVAL(conn->fragment_disable, options, BIT_4);
2242 fw_ddb_entry->ip_options = cpu_to_le16(options);
2243
2244 fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2245 fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2246 cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
2247 fw_ddb_entry->iscsi_max_snd_data_seg_len =
2248 cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
2249 fw_ddb_entry->iscsi_first_burst_len =
2250 cpu_to_le16(sess->first_burst / BYTE_UNITS);
2251 fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
2252 BYTE_UNITS);
2253 fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
2254 fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
2255 fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
2256 fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
2257 fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
2258 fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
2259 fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
2260 fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
2261 fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
2262 fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
2263 fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
2264 fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
2265 fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
2266 fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
2267 fw_ddb_entry->port = cpu_to_le16(conn->port);
2268 fw_ddb_entry->def_timeout =
2269 cpu_to_le16(sess->default_taskmgmt_timeout);
2270
2271 if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2272 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
2273 else
2274 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
2275
2276 if (conn->ipaddress)
2277 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
2278 sizeof(fw_ddb_entry->ip_addr));
2279
2280 if (conn->redirect_ipaddr)
2281 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
2282 sizeof(fw_ddb_entry->tgt_addr));
2283
2284 if (conn->link_local_ipv6_addr)
2285 memcpy(fw_ddb_entry->link_local_ipv6_addr,
2286 conn->link_local_ipv6_addr,
2287 sizeof(fw_ddb_entry->link_local_ipv6_addr));
2288
2289 if (sess->targetname)
2290 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2291 sizeof(fw_ddb_entry->iscsi_name));
2292
2293 if (sess->targetalias)
2294 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
2295 sizeof(fw_ddb_entry->iscsi_alias));
2296
2297 COPY_ISID(fw_ddb_entry->isid, sess->isid);
2298
2299 return rc;
2300 }
2301
2302 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
2303 struct iscsi_session *sess,
2304 struct dev_db_entry *fw_ddb_entry)
2305 {
2306 unsigned long options = 0;
2307 uint16_t ddb_link;
2308 uint16_t disc_parent;
2309
2310 options = le16_to_cpu(fw_ddb_entry->options);
2311 conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2312 sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2313 &options);
2314 sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2315
2316 options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2317 conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2318 conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2319 sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2320 sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2321 sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2322 &options);
2323 sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2324 sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2325 sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2326 &options);
2327 sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2328 sess->discovery_auth_optional =
2329 test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2330 if (test_bit(ISCSIOPT_ERL1, &options))
2331 sess->erl |= BIT_1;
2332 if (test_bit(ISCSIOPT_ERL0, &options))
2333 sess->erl |= BIT_0;
2334
2335 options = le16_to_cpu(fw_ddb_entry->tcp_options);
2336 conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2337 conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2338 conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2339 if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2340 conn->tcp_timer_scale |= BIT_3;
2341 if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2342 conn->tcp_timer_scale |= BIT_2;
2343 if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2344 conn->tcp_timer_scale |= BIT_1;
2345
2346 conn->tcp_timer_scale >>= 1;
2347 conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2348
2349 options = le16_to_cpu(fw_ddb_entry->ip_options);
2350 conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2351
2352 conn->max_recv_dlength = BYTE_UNITS *
2353 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2354 conn->max_xmit_dlength = BYTE_UNITS *
2355 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2356 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2357 sess->first_burst = BYTE_UNITS *
2358 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2359 sess->max_burst = BYTE_UNITS *
2360 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2361 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2362 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2363 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2364 conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2365 conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2366 conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2367 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2368 conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
2369 conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2370 conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2371 conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2372 sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2373 COPY_ISID(sess->isid, fw_ddb_entry->isid);
2374
2375 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
2376 if (ddb_link < MAX_DDB_ENTRIES)
2377 sess->discovery_parent_idx = ddb_link;
2378 else
2379 sess->discovery_parent_idx = DDB_NO_LINK;
2380
2381 if (ddb_link == DDB_ISNS)
2382 disc_parent = ISCSI_DISC_PARENT_ISNS;
2383 else if (ddb_link == DDB_NO_LINK)
2384 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
2385 else if (ddb_link < MAX_DDB_ENTRIES)
2386 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
2387 else
2388 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
2389
2390 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
2391 iscsi_get_discovery_parent_name(disc_parent), 0);
2392
2393 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2394 (char *)fw_ddb_entry->iscsi_alias, 0);
2395 }
2396
2397 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
2398 struct dev_db_entry *fw_ddb_entry,
2399 struct iscsi_cls_session *cls_sess,
2400 struct iscsi_cls_conn *cls_conn)
2401 {
2402 int buflen = 0;
2403 struct iscsi_session *sess;
2404 struct ddb_entry *ddb_entry;
2405 struct iscsi_conn *conn;
2406 char ip_addr[DDB_IPADDR_LEN];
2407 uint16_t options = 0;
2408
2409 sess = cls_sess->dd_data;
2410 ddb_entry = sess->dd_data;
2411 conn = cls_conn->dd_data;
2412
2413 ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2414
2415 qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
2416
2417 sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
2418 conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
2419
2420 memset(ip_addr, 0, sizeof(ip_addr));
2421 options = le16_to_cpu(fw_ddb_entry->options);
2422 if (options & DDB_OPT_IPV6_DEVICE) {
2423 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
2424
2425 memset(ip_addr, 0, sizeof(ip_addr));
2426 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
2427 } else {
2428 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
2429 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
2430 }
2431
2432 iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
2433 (char *)ip_addr, buflen);
2434 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
2435 (char *)fw_ddb_entry->iscsi_name, buflen);
2436 iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
2437 (char *)ha->name_string, buflen);
2438 }
2439
2440 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
2441 struct ddb_entry *ddb_entry)
2442 {
2443 struct iscsi_cls_session *cls_sess;
2444 struct iscsi_cls_conn *cls_conn;
2445 uint32_t ddb_state;
2446 dma_addr_t fw_ddb_entry_dma;
2447 struct dev_db_entry *fw_ddb_entry;
2448
2449 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2450 &fw_ddb_entry_dma, GFP_KERNEL);
2451 if (!fw_ddb_entry) {
2452 ql4_printk(KERN_ERR, ha,
2453 "%s: Unable to allocate dma buffer\n", __func__);
2454 goto exit_session_conn_fwddb_param;
2455 }
2456
2457 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2458 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2459 NULL, NULL, NULL) == QLA_ERROR) {
2460 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2461 "get_ddb_entry for fw_ddb_index %d\n",
2462 ha->host_no, __func__,
2463 ddb_entry->fw_ddb_index));
2464 goto exit_session_conn_fwddb_param;
2465 }
2466
2467 cls_sess = ddb_entry->sess;
2468
2469 cls_conn = ddb_entry->conn;
2470
2471 /* Update params */
2472 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2473
2474 exit_session_conn_fwddb_param:
2475 if (fw_ddb_entry)
2476 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2477 fw_ddb_entry, fw_ddb_entry_dma);
2478 }
2479
2480 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2481 struct ddb_entry *ddb_entry)
2482 {
2483 struct iscsi_cls_session *cls_sess;
2484 struct iscsi_cls_conn *cls_conn;
2485 struct iscsi_session *sess;
2486 struct iscsi_conn *conn;
2487 uint32_t ddb_state;
2488 dma_addr_t fw_ddb_entry_dma;
2489 struct dev_db_entry *fw_ddb_entry;
2490
2491 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2492 &fw_ddb_entry_dma, GFP_KERNEL);
2493 if (!fw_ddb_entry) {
2494 ql4_printk(KERN_ERR, ha,
2495 "%s: Unable to allocate dma buffer\n", __func__);
2496 goto exit_session_conn_param;
2497 }
2498
2499 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2500 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2501 NULL, NULL, NULL) == QLA_ERROR) {
2502 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2503 "get_ddb_entry for fw_ddb_index %d\n",
2504 ha->host_no, __func__,
2505 ddb_entry->fw_ddb_index));
2506 goto exit_session_conn_param;
2507 }
2508
2509 cls_sess = ddb_entry->sess;
2510 sess = cls_sess->dd_data;
2511
2512 cls_conn = ddb_entry->conn;
2513 conn = cls_conn->dd_data;
2514
2515 /* Update timers after login */
2516 ddb_entry->default_relogin_timeout =
2517 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2518 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2519 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2520 ddb_entry->default_time2wait =
2521 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2522
2523 /* Update params */
2524 ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2525 qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
2526
2527 memcpy(sess->initiatorname, ha->name_string,
2528 min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2529
2530 exit_session_conn_param:
2531 if (fw_ddb_entry)
2532 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2533 fw_ddb_entry, fw_ddb_entry_dma);
2534 }
2535
2536 /*
2537 * Timer routines
2538 */
2539
2540 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2541 unsigned long interval)
2542 {
2543 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2544 __func__, ha->host->host_no));
2545 init_timer(&ha->timer);
2546 ha->timer.expires = jiffies + interval * HZ;
2547 ha->timer.data = (unsigned long)ha;
2548 ha->timer.function = (void (*)(unsigned long))func;
2549 add_timer(&ha->timer);
2550 ha->timer_active = 1;
2551 }
2552
2553 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2554 {
2555 del_timer_sync(&ha->timer);
2556 ha->timer_active = 0;
2557 }
2558
2559 /***
2560 * qla4xxx_mark_device_missing - blocks the session
2561 * @cls_session: Pointer to the session to be blocked
2562 * @ddb_entry: Pointer to device database entry
2563 *
2564 * This routine marks a device missing and close connection.
2565 **/
2566 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2567 {
2568 iscsi_block_session(cls_session);
2569 }
2570
2571 /**
2572 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2573 * @ha: Pointer to host adapter structure.
2574 *
2575 * This routine marks a device missing and resets the relogin retry count.
2576 **/
2577 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2578 {
2579 iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2580 }
2581
2582 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2583 struct ddb_entry *ddb_entry,
2584 struct scsi_cmnd *cmd)
2585 {
2586 struct srb *srb;
2587
2588 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2589 if (!srb)
2590 return srb;
2591
2592 kref_init(&srb->srb_ref);
2593 srb->ha = ha;
2594 srb->ddb = ddb_entry;
2595 srb->cmd = cmd;
2596 srb->flags = 0;
2597 CMD_SP(cmd) = (void *)srb;
2598
2599 return srb;
2600 }
2601
2602 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2603 {
2604 struct scsi_cmnd *cmd = srb->cmd;
2605
2606 if (srb->flags & SRB_DMA_VALID) {
2607 scsi_dma_unmap(cmd);
2608 srb->flags &= ~SRB_DMA_VALID;
2609 }
2610 CMD_SP(cmd) = NULL;
2611 }
2612
2613 void qla4xxx_srb_compl(struct kref *ref)
2614 {
2615 struct srb *srb = container_of(ref, struct srb, srb_ref);
2616 struct scsi_cmnd *cmd = srb->cmd;
2617 struct scsi_qla_host *ha = srb->ha;
2618
2619 qla4xxx_srb_free_dma(ha, srb);
2620
2621 mempool_free(srb, ha->srb_mempool);
2622
2623 cmd->scsi_done(cmd);
2624 }
2625
2626 /**
2627 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2628 * @host: scsi host
2629 * @cmd: Pointer to Linux's SCSI command structure
2630 *
2631 * Remarks:
2632 * This routine is invoked by Linux to send a SCSI command to the driver.
2633 * The mid-level driver tries to ensure that queuecommand never gets
2634 * invoked concurrently with itself or the interrupt handler (although
2635 * the interrupt handler may call this routine as part of request-
2636 * completion handling). Unfortunely, it sometimes calls the scheduler
2637 * in interrupt context which is a big NO! NO!.
2638 **/
2639 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2640 {
2641 struct scsi_qla_host *ha = to_qla_host(host);
2642 struct ddb_entry *ddb_entry = cmd->device->hostdata;
2643 struct iscsi_cls_session *sess = ddb_entry->sess;
2644 struct srb *srb;
2645 int rval;
2646
2647 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2648 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2649 cmd->result = DID_NO_CONNECT << 16;
2650 else
2651 cmd->result = DID_REQUEUE << 16;
2652 goto qc_fail_command;
2653 }
2654
2655 if (!sess) {
2656 cmd->result = DID_IMM_RETRY << 16;
2657 goto qc_fail_command;
2658 }
2659
2660 rval = iscsi_session_chkready(sess);
2661 if (rval) {
2662 cmd->result = rval;
2663 goto qc_fail_command;
2664 }
2665
2666 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2667 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2668 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2669 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2670 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2671 !test_bit(AF_ONLINE, &ha->flags) ||
2672 !test_bit(AF_LINK_UP, &ha->flags) ||
2673 test_bit(AF_LOOPBACK, &ha->flags) ||
2674 test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
2675 test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
2676 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2677 goto qc_host_busy;
2678
2679 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2680 if (!srb)
2681 goto qc_host_busy;
2682
2683 rval = qla4xxx_send_command_to_isp(ha, srb);
2684 if (rval != QLA_SUCCESS)
2685 goto qc_host_busy_free_sp;
2686
2687 return 0;
2688
2689 qc_host_busy_free_sp:
2690 qla4xxx_srb_free_dma(ha, srb);
2691 mempool_free(srb, ha->srb_mempool);
2692
2693 qc_host_busy:
2694 return SCSI_MLQUEUE_HOST_BUSY;
2695
2696 qc_fail_command:
2697 cmd->scsi_done(cmd);
2698
2699 return 0;
2700 }
2701
2702 /**
2703 * qla4xxx_mem_free - frees memory allocated to adapter
2704 * @ha: Pointer to host adapter structure.
2705 *
2706 * Frees memory previously allocated by qla4xxx_mem_alloc
2707 **/
2708 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2709 {
2710 if (ha->queues)
2711 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2712 ha->queues_dma);
2713
2714 if (ha->fw_dump)
2715 vfree(ha->fw_dump);
2716
2717 ha->queues_len = 0;
2718 ha->queues = NULL;
2719 ha->queues_dma = 0;
2720 ha->request_ring = NULL;
2721 ha->request_dma = 0;
2722 ha->response_ring = NULL;
2723 ha->response_dma = 0;
2724 ha->shadow_regs = NULL;
2725 ha->shadow_regs_dma = 0;
2726 ha->fw_dump = NULL;
2727 ha->fw_dump_size = 0;
2728
2729 /* Free srb pool. */
2730 if (ha->srb_mempool)
2731 mempool_destroy(ha->srb_mempool);
2732
2733 ha->srb_mempool = NULL;
2734
2735 if (ha->chap_dma_pool)
2736 dma_pool_destroy(ha->chap_dma_pool);
2737
2738 if (ha->chap_list)
2739 vfree(ha->chap_list);
2740 ha->chap_list = NULL;
2741
2742 if (ha->fw_ddb_dma_pool)
2743 dma_pool_destroy(ha->fw_ddb_dma_pool);
2744
2745 /* release io space registers */
2746 if (is_qla8022(ha)) {
2747 if (ha->nx_pcibase)
2748 iounmap(
2749 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2750 } else if (is_qla8032(ha) || is_qla8042(ha)) {
2751 if (ha->nx_pcibase)
2752 iounmap(
2753 (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2754 } else if (ha->reg) {
2755 iounmap(ha->reg);
2756 }
2757
2758 if (ha->reset_tmplt.buff)
2759 vfree(ha->reset_tmplt.buff);
2760
2761 pci_release_regions(ha->pdev);
2762 }
2763
2764 /**
2765 * qla4xxx_mem_alloc - allocates memory for use by adapter.
2766 * @ha: Pointer to host adapter structure
2767 *
2768 * Allocates DMA memory for request and response queues. Also allocates memory
2769 * for srbs.
2770 **/
2771 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2772 {
2773 unsigned long align;
2774
2775 /* Allocate contiguous block of DMA memory for queues. */
2776 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2777 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2778 sizeof(struct shadow_regs) +
2779 MEM_ALIGN_VALUE +
2780 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2781 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2782 &ha->queues_dma, GFP_KERNEL);
2783 if (ha->queues == NULL) {
2784 ql4_printk(KERN_WARNING, ha,
2785 "Memory Allocation failed - queues.\n");
2786
2787 goto mem_alloc_error_exit;
2788 }
2789 memset(ha->queues, 0, ha->queues_len);
2790
2791 /*
2792 * As per RISC alignment requirements -- the bus-address must be a
2793 * multiple of the request-ring size (in bytes).
2794 */
2795 align = 0;
2796 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2797 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2798 (MEM_ALIGN_VALUE - 1));
2799
2800 /* Update request and response queue pointers. */
2801 ha->request_dma = ha->queues_dma + align;
2802 ha->request_ring = (struct queue_entry *) (ha->queues + align);
2803 ha->response_dma = ha->queues_dma + align +
2804 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2805 ha->response_ring = (struct queue_entry *) (ha->queues + align +
2806 (REQUEST_QUEUE_DEPTH *
2807 QUEUE_SIZE));
2808 ha->shadow_regs_dma = ha->queues_dma + align +
2809 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2810 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2811 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2812 (REQUEST_QUEUE_DEPTH *
2813 QUEUE_SIZE) +
2814 (RESPONSE_QUEUE_DEPTH *
2815 QUEUE_SIZE));
2816
2817 /* Allocate memory for srb pool. */
2818 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2819 mempool_free_slab, srb_cachep);
2820 if (ha->srb_mempool == NULL) {
2821 ql4_printk(KERN_WARNING, ha,
2822 "Memory Allocation failed - SRB Pool.\n");
2823
2824 goto mem_alloc_error_exit;
2825 }
2826
2827 ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2828 CHAP_DMA_BLOCK_SIZE, 8, 0);
2829
2830 if (ha->chap_dma_pool == NULL) {
2831 ql4_printk(KERN_WARNING, ha,
2832 "%s: chap_dma_pool allocation failed..\n", __func__);
2833 goto mem_alloc_error_exit;
2834 }
2835
2836 ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2837 DDB_DMA_BLOCK_SIZE, 8, 0);
2838
2839 if (ha->fw_ddb_dma_pool == NULL) {
2840 ql4_printk(KERN_WARNING, ha,
2841 "%s: fw_ddb_dma_pool allocation failed..\n",
2842 __func__);
2843 goto mem_alloc_error_exit;
2844 }
2845
2846 return QLA_SUCCESS;
2847
2848 mem_alloc_error_exit:
2849 qla4xxx_mem_free(ha);
2850 return QLA_ERROR;
2851 }
2852
2853 /**
2854 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2855 * @ha: adapter block pointer.
2856 *
2857 * Note: The caller should not hold the idc lock.
2858 **/
2859 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2860 {
2861 uint32_t temp, temp_state, temp_val;
2862 int status = QLA_SUCCESS;
2863
2864 temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2865
2866 temp_state = qla82xx_get_temp_state(temp);
2867 temp_val = qla82xx_get_temp_val(temp);
2868
2869 if (temp_state == QLA82XX_TEMP_PANIC) {
2870 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2871 " exceeds maximum allowed. Hardware has been shut"
2872 " down.\n", temp_val);
2873 status = QLA_ERROR;
2874 } else if (temp_state == QLA82XX_TEMP_WARN) {
2875 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2876 ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2877 " degrees C exceeds operating range."
2878 " Immediate action needed.\n", temp_val);
2879 } else {
2880 if (ha->temperature == QLA82XX_TEMP_WARN)
2881 ql4_printk(KERN_INFO, ha, "Device temperature is"
2882 " now %d degrees C in normal range.\n",
2883 temp_val);
2884 }
2885 ha->temperature = temp_state;
2886 return status;
2887 }
2888
2889 /**
2890 * qla4_8xxx_check_fw_alive - Check firmware health
2891 * @ha: Pointer to host adapter structure.
2892 *
2893 * Context: Interrupt
2894 **/
2895 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2896 {
2897 uint32_t fw_heartbeat_counter;
2898 int status = QLA_SUCCESS;
2899
2900 fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2901 QLA8XXX_PEG_ALIVE_COUNTER);
2902 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2903 if (fw_heartbeat_counter == 0xffffffff) {
2904 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2905 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2906 ha->host_no, __func__));
2907 return status;
2908 }
2909
2910 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2911 ha->seconds_since_last_heartbeat++;
2912 /* FW not alive after 2 seconds */
2913 if (ha->seconds_since_last_heartbeat == 2) {
2914 ha->seconds_since_last_heartbeat = 0;
2915 qla4_8xxx_dump_peg_reg(ha);
2916 status = QLA_ERROR;
2917 }
2918 } else
2919 ha->seconds_since_last_heartbeat = 0;
2920
2921 ha->fw_heartbeat_counter = fw_heartbeat_counter;
2922 return status;
2923 }
2924
2925 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2926 {
2927 uint32_t halt_status;
2928 int halt_status_unrecoverable = 0;
2929
2930 halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2931
2932 if (is_qla8022(ha)) {
2933 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2934 __func__);
2935 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2936 CRB_NIU_XG_PAUSE_CTL_P0 |
2937 CRB_NIU_XG_PAUSE_CTL_P1);
2938
2939 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2940 ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2941 __func__);
2942 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2943 halt_status_unrecoverable = 1;
2944 } else if (is_qla8032(ha) || is_qla8042(ha)) {
2945 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2946 ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2947 __func__);
2948 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2949 halt_status_unrecoverable = 1;
2950 }
2951
2952 /*
2953 * Since we cannot change dev_state in interrupt context,
2954 * set appropriate DPC flag then wakeup DPC
2955 */
2956 if (halt_status_unrecoverable) {
2957 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2958 } else {
2959 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2960 __func__);
2961 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2962 }
2963 qla4xxx_mailbox_premature_completion(ha);
2964 qla4xxx_wake_dpc(ha);
2965 }
2966
2967 /**
2968 * qla4_8xxx_watchdog - Poll dev state
2969 * @ha: Pointer to host adapter structure.
2970 *
2971 * Context: Interrupt
2972 **/
2973 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2974 {
2975 uint32_t dev_state;
2976 uint32_t idc_ctrl;
2977
2978 /* don't poll if reset is going on */
2979 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2980 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2981 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2982 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2983
2984 if (qla4_8xxx_check_temp(ha)) {
2985 if (is_qla8022(ha)) {
2986 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2987 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2988 CRB_NIU_XG_PAUSE_CTL_P0 |
2989 CRB_NIU_XG_PAUSE_CTL_P1);
2990 }
2991 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2992 qla4xxx_wake_dpc(ha);
2993 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2994 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2995
2996 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
2997 __func__);
2998
2999 if (is_qla8032(ha) || is_qla8042(ha)) {
3000 idc_ctrl = qla4_83xx_rd_reg(ha,
3001 QLA83XX_IDC_DRV_CTRL);
3002 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
3003 ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
3004 __func__);
3005 qla4xxx_mailbox_premature_completion(
3006 ha);
3007 }
3008 }
3009
3010 if ((is_qla8032(ha) || is_qla8042(ha)) ||
3011 (is_qla8022(ha) && !ql4xdontresethba)) {
3012 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3013 qla4xxx_wake_dpc(ha);
3014 }
3015 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
3016 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3017 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
3018 __func__);
3019 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
3020 qla4xxx_wake_dpc(ha);
3021 } else {
3022 /* Check firmware health */
3023 if (qla4_8xxx_check_fw_alive(ha))
3024 qla4_8xxx_process_fw_error(ha);
3025 }
3026 }
3027 }
3028
3029 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3030 {
3031 struct iscsi_session *sess;
3032 struct ddb_entry *ddb_entry;
3033 struct scsi_qla_host *ha;
3034
3035 sess = cls_sess->dd_data;
3036 ddb_entry = sess->dd_data;
3037 ha = ddb_entry->ha;
3038
3039 if (!(ddb_entry->ddb_type == FLASH_DDB))
3040 return;
3041
3042 if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
3043 !iscsi_is_session_online(cls_sess)) {
3044 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
3045 INVALID_ENTRY) {
3046 if (atomic_read(&ddb_entry->retry_relogin_timer) ==
3047 0) {
3048 atomic_set(&ddb_entry->retry_relogin_timer,
3049 INVALID_ENTRY);
3050 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
3051 set_bit(DF_RELOGIN, &ddb_entry->flags);
3052 DEBUG2(ql4_printk(KERN_INFO, ha,
3053 "%s: index [%d] login device\n",
3054 __func__, ddb_entry->fw_ddb_index));
3055 } else
3056 atomic_dec(&ddb_entry->retry_relogin_timer);
3057 }
3058 }
3059
3060 /* Wait for relogin to timeout */
3061 if (atomic_read(&ddb_entry->relogin_timer) &&
3062 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
3063 /*
3064 * If the relogin times out and the device is
3065 * still NOT ONLINE then try and relogin again.
3066 */
3067 if (!iscsi_is_session_online(cls_sess)) {
3068 /* Reset retry relogin timer */
3069 atomic_inc(&ddb_entry->relogin_retry_count);
3070 DEBUG2(ql4_printk(KERN_INFO, ha,
3071 "%s: index[%d] relogin timed out-retrying"
3072 " relogin (%d), retry (%d)\n", __func__,
3073 ddb_entry->fw_ddb_index,
3074 atomic_read(&ddb_entry->relogin_retry_count),
3075 ddb_entry->default_time2wait + 4));
3076 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
3077 atomic_set(&ddb_entry->retry_relogin_timer,
3078 ddb_entry->default_time2wait + 4);
3079 }
3080 }
3081 }
3082
3083 /**
3084 * qla4xxx_timer - checks every second for work to do.
3085 * @ha: Pointer to host adapter structure.
3086 **/
3087 static void qla4xxx_timer(struct scsi_qla_host *ha)
3088 {
3089 int start_dpc = 0;
3090 uint16_t w;
3091
3092 iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
3093
3094 /* If we are in the middle of AER/EEH processing
3095 * skip any processing and reschedule the timer
3096 */
3097 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3098 mod_timer(&ha->timer, jiffies + HZ);
3099 return;
3100 }
3101
3102 /* Hardware read to trigger an EEH error during mailbox waits. */
3103 if (!pci_channel_offline(ha->pdev))
3104 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
3105
3106 if (is_qla80XX(ha))
3107 qla4_8xxx_watchdog(ha);
3108
3109 if (is_qla40XX(ha)) {
3110 /* Check for heartbeat interval. */
3111 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
3112 ha->heartbeat_interval != 0) {
3113 ha->seconds_since_last_heartbeat++;
3114 if (ha->seconds_since_last_heartbeat >
3115 ha->heartbeat_interval + 2)
3116 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3117 }
3118 }
3119
3120 /* Process any deferred work. */
3121 if (!list_empty(&ha->work_list))
3122 start_dpc++;
3123
3124 /* Wakeup the dpc routine for this adapter, if needed. */
3125 if (start_dpc ||
3126 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3127 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
3128 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
3129 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3130 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3131 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
3132 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
3133 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
3134 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
3135 test_bit(DPC_AEN, &ha->dpc_flags)) {
3136 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
3137 " - dpc flags = 0x%lx\n",
3138 ha->host_no, __func__, ha->dpc_flags));
3139 qla4xxx_wake_dpc(ha);
3140 }
3141
3142 /* Reschedule timer thread to call us back in one second */
3143 mod_timer(&ha->timer, jiffies + HZ);
3144
3145 DEBUG2(ha->seconds_since_last_intr++);
3146 }
3147
3148 /**
3149 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
3150 * @ha: Pointer to host adapter structure.
3151 *
3152 * This routine stalls the driver until all outstanding commands are returned.
3153 * Caller must release the Hardware Lock prior to calling this routine.
3154 **/
3155 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
3156 {
3157 uint32_t index = 0;
3158 unsigned long flags;
3159 struct scsi_cmnd *cmd;
3160
3161 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
3162
3163 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
3164 "complete\n", WAIT_CMD_TOV));
3165
3166 while (!time_after_eq(jiffies, wtime)) {
3167 spin_lock_irqsave(&ha->hardware_lock, flags);
3168 /* Find a command that hasn't completed. */
3169 for (index = 0; index < ha->host->can_queue; index++) {
3170 cmd = scsi_host_find_tag(ha->host, index);
3171 /*
3172 * We cannot just check if the index is valid,
3173 * becase if we are run from the scsi eh, then
3174 * the scsi/block layer is going to prevent
3175 * the tag from being released.
3176 */
3177 if (cmd != NULL && CMD_SP(cmd))
3178 break;
3179 }
3180 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3181
3182 /* If No Commands are pending, wait is complete */
3183 if (index == ha->host->can_queue)
3184 return QLA_SUCCESS;
3185
3186 msleep(1000);
3187 }
3188 /* If we timed out on waiting for commands to come back
3189 * return ERROR. */
3190 return QLA_ERROR;
3191 }
3192
3193 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
3194 {
3195 uint32_t ctrl_status;
3196 unsigned long flags = 0;
3197
3198 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
3199
3200 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
3201 return QLA_ERROR;
3202
3203 spin_lock_irqsave(&ha->hardware_lock, flags);
3204
3205 /*
3206 * If the SCSI Reset Interrupt bit is set, clear it.
3207 * Otherwise, the Soft Reset won't work.
3208 */
3209 ctrl_status = readw(&ha->reg->ctrl_status);
3210 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
3211 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3212
3213 /* Issue Soft Reset */
3214 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
3215 readl(&ha->reg->ctrl_status);
3216
3217 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3218 return QLA_SUCCESS;
3219 }
3220
3221 /**
3222 * qla4xxx_soft_reset - performs soft reset.
3223 * @ha: Pointer to host adapter structure.
3224 **/
3225 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
3226 {
3227 uint32_t max_wait_time;
3228 unsigned long flags = 0;
3229 int status;
3230 uint32_t ctrl_status;
3231
3232 status = qla4xxx_hw_reset(ha);
3233 if (status != QLA_SUCCESS)
3234 return status;
3235
3236 status = QLA_ERROR;
3237 /* Wait until the Network Reset Intr bit is cleared */
3238 max_wait_time = RESET_INTR_TOV;
3239 do {
3240 spin_lock_irqsave(&ha->hardware_lock, flags);
3241 ctrl_status = readw(&ha->reg->ctrl_status);
3242 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3243
3244 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
3245 break;
3246
3247 msleep(1000);
3248 } while ((--max_wait_time));
3249
3250 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
3251 DEBUG2(printk(KERN_WARNING
3252 "scsi%ld: Network Reset Intr not cleared by "
3253 "Network function, clearing it now!\n",
3254 ha->host_no));
3255 spin_lock_irqsave(&ha->hardware_lock, flags);
3256 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
3257 readl(&ha->reg->ctrl_status);
3258 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3259 }
3260
3261 /* Wait until the firmware tells us the Soft Reset is done */
3262 max_wait_time = SOFT_RESET_TOV;
3263 do {
3264 spin_lock_irqsave(&ha->hardware_lock, flags);
3265 ctrl_status = readw(&ha->reg->ctrl_status);
3266 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3267
3268 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
3269 status = QLA_SUCCESS;
3270 break;
3271 }
3272
3273 msleep(1000);
3274 } while ((--max_wait_time));
3275
3276 /*
3277 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
3278 * after the soft reset has taken place.
3279 */
3280 spin_lock_irqsave(&ha->hardware_lock, flags);
3281 ctrl_status = readw(&ha->reg->ctrl_status);
3282 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
3283 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3284 readl(&ha->reg->ctrl_status);
3285 }
3286 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3287
3288 /* If soft reset fails then most probably the bios on other
3289 * function is also enabled.
3290 * Since the initialization is sequential the other fn
3291 * wont be able to acknowledge the soft reset.
3292 * Issue a force soft reset to workaround this scenario.
3293 */
3294 if (max_wait_time == 0) {
3295 /* Issue Force Soft Reset */
3296 spin_lock_irqsave(&ha->hardware_lock, flags);
3297 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
3298 readl(&ha->reg->ctrl_status);
3299 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3300 /* Wait until the firmware tells us the Soft Reset is done */
3301 max_wait_time = SOFT_RESET_TOV;
3302 do {
3303 spin_lock_irqsave(&ha->hardware_lock, flags);
3304 ctrl_status = readw(&ha->reg->ctrl_status);
3305 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3306
3307 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
3308 status = QLA_SUCCESS;
3309 break;
3310 }
3311
3312 msleep(1000);
3313 } while ((--max_wait_time));
3314 }
3315
3316 return status;
3317 }
3318
3319 /**
3320 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
3321 * @ha: Pointer to host adapter structure.
3322 * @res: returned scsi status
3323 *
3324 * This routine is called just prior to a HARD RESET to return all
3325 * outstanding commands back to the Operating System.
3326 * Caller should make sure that the following locks are released
3327 * before this calling routine: Hardware lock, and io_request_lock.
3328 **/
3329 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
3330 {
3331 struct srb *srb;
3332 int i;
3333 unsigned long flags;
3334
3335 spin_lock_irqsave(&ha->hardware_lock, flags);
3336 for (i = 0; i < ha->host->can_queue; i++) {
3337 srb = qla4xxx_del_from_active_array(ha, i);
3338 if (srb != NULL) {
3339 srb->cmd->result = res;
3340 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
3341 }
3342 }
3343 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3344 }
3345
3346 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
3347 {
3348 clear_bit(AF_ONLINE, &ha->flags);
3349
3350 /* Disable the board */
3351 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
3352
3353 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3354 qla4xxx_mark_all_devices_missing(ha);
3355 clear_bit(AF_INIT_DONE, &ha->flags);
3356 }
3357
3358 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
3359 {
3360 struct iscsi_session *sess;
3361 struct ddb_entry *ddb_entry;
3362
3363 sess = cls_session->dd_data;
3364 ddb_entry = sess->dd_data;
3365 ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
3366
3367 if (ddb_entry->ddb_type == FLASH_DDB)
3368 iscsi_block_session(ddb_entry->sess);
3369 else
3370 iscsi_session_failure(cls_session->dd_data,
3371 ISCSI_ERR_CONN_FAILED);
3372 }
3373
3374 /**
3375 * qla4xxx_recover_adapter - recovers adapter after a fatal error
3376 * @ha: Pointer to host adapter structure.
3377 **/
3378 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
3379 {
3380 int status = QLA_ERROR;
3381 uint8_t reset_chip = 0;
3382 uint32_t dev_state;
3383 unsigned long wait;
3384
3385 /* Stall incoming I/O until we are done */
3386 scsi_block_requests(ha->host);
3387 clear_bit(AF_ONLINE, &ha->flags);
3388 clear_bit(AF_LINK_UP, &ha->flags);
3389
3390 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
3391
3392 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3393
3394 if ((is_qla8032(ha) || is_qla8042(ha)) &&
3395 !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3396 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3397 __func__);
3398 /* disable pause frame for ISP83xx */
3399 qla4_83xx_disable_pause(ha);
3400 }
3401
3402 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
3403
3404 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
3405 reset_chip = 1;
3406
3407 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
3408 * do not reset adapter, jump to initialize_adapter */
3409 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3410 status = QLA_SUCCESS;
3411 goto recover_ha_init_adapter;
3412 }
3413
3414 /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
3415 * from eh_host_reset or ioctl module */
3416 if (is_qla80XX(ha) && !reset_chip &&
3417 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3418
3419 DEBUG2(ql4_printk(KERN_INFO, ha,
3420 "scsi%ld: %s - Performing stop_firmware...\n",
3421 ha->host_no, __func__));
3422 status = ha->isp_ops->reset_firmware(ha);
3423 if (status == QLA_SUCCESS) {
3424 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3425 qla4xxx_cmd_wait(ha);
3426
3427 ha->isp_ops->disable_intrs(ha);
3428 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3429 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3430 } else {
3431 /* If the stop_firmware fails then
3432 * reset the entire chip */
3433 reset_chip = 1;
3434 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3435 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3436 }
3437 }
3438
3439 /* Issue full chip reset if recovering from a catastrophic error,
3440 * or if stop_firmware fails for ISP-8xxx.
3441 * This is the default case for ISP-4xxx */
3442 if (is_qla40XX(ha) || reset_chip) {
3443 if (is_qla40XX(ha))
3444 goto chip_reset;
3445
3446 /* Check if 8XXX firmware is alive or not
3447 * We may have arrived here from NEED_RESET
3448 * detection only */
3449 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3450 goto chip_reset;
3451
3452 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3453 while (time_before(jiffies, wait)) {
3454 if (qla4_8xxx_check_fw_alive(ha)) {
3455 qla4xxx_mailbox_premature_completion(ha);
3456 break;
3457 }
3458
3459 set_current_state(TASK_UNINTERRUPTIBLE);
3460 schedule_timeout(HZ);
3461 }
3462 chip_reset:
3463 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3464 qla4xxx_cmd_wait(ha);
3465
3466 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3467 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3468 DEBUG2(ql4_printk(KERN_INFO, ha,
3469 "scsi%ld: %s - Performing chip reset..\n",
3470 ha->host_no, __func__));
3471 status = ha->isp_ops->reset_chip(ha);
3472 }
3473
3474 /* Flush any pending ddb changed AENs */
3475 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3476
3477 recover_ha_init_adapter:
3478 /* Upon successful firmware/chip reset, re-initialize the adapter */
3479 if (status == QLA_SUCCESS) {
3480 /* For ISP-4xxx, force function 1 to always initialize
3481 * before function 3 to prevent both funcions from
3482 * stepping on top of the other */
3483 if (is_qla40XX(ha) && (ha->mac_index == 3))
3484 ssleep(6);
3485
3486 /* NOTE: AF_ONLINE flag set upon successful completion of
3487 * qla4xxx_initialize_adapter */
3488 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3489 }
3490
3491 /* Retry failed adapter initialization, if necessary
3492 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3493 * case to prevent ping-pong resets between functions */
3494 if (!test_bit(AF_ONLINE, &ha->flags) &&
3495 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3496 /* Adapter initialization failed, see if we can retry
3497 * resetting the ha.
3498 * Since we don't want to block the DPC for too long
3499 * with multiple resets in the same thread,
3500 * utilize DPC to retry */
3501 if (is_qla80XX(ha)) {
3502 ha->isp_ops->idc_lock(ha);
3503 dev_state = qla4_8xxx_rd_direct(ha,
3504 QLA8XXX_CRB_DEV_STATE);
3505 ha->isp_ops->idc_unlock(ha);
3506 if (dev_state == QLA8XXX_DEV_FAILED) {
3507 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3508 "recover adapter. H/W is in Failed "
3509 "state\n", __func__);
3510 qla4xxx_dead_adapter_cleanup(ha);
3511 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3512 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3513 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3514 &ha->dpc_flags);
3515 status = QLA_ERROR;
3516
3517 goto exit_recover;
3518 }
3519 }
3520
3521 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3522 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3523 DEBUG2(printk("scsi%ld: recover adapter - retrying "
3524 "(%d) more times\n", ha->host_no,
3525 ha->retry_reset_ha_cnt));
3526 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3527 status = QLA_ERROR;
3528 } else {
3529 if (ha->retry_reset_ha_cnt > 0) {
3530 /* Schedule another Reset HA--DPC will retry */
3531 ha->retry_reset_ha_cnt--;
3532 DEBUG2(printk("scsi%ld: recover adapter - "
3533 "retry remaining %d\n",
3534 ha->host_no,
3535 ha->retry_reset_ha_cnt));
3536 status = QLA_ERROR;
3537 }
3538
3539 if (ha->retry_reset_ha_cnt == 0) {
3540 /* Recover adapter retries have been exhausted.
3541 * Adapter DEAD */
3542 DEBUG2(printk("scsi%ld: recover adapter "
3543 "failed - board disabled\n",
3544 ha->host_no));
3545 qla4xxx_dead_adapter_cleanup(ha);
3546 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3547 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3548 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3549 &ha->dpc_flags);
3550 status = QLA_ERROR;
3551 }
3552 }
3553 } else {
3554 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3555 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3556 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3557 }
3558
3559 exit_recover:
3560 ha->adapter_error_count++;
3561
3562 if (test_bit(AF_ONLINE, &ha->flags))
3563 ha->isp_ops->enable_intrs(ha);
3564
3565 scsi_unblock_requests(ha->host);
3566
3567 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3568 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3569 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3570
3571 return status;
3572 }
3573
3574 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3575 {
3576 struct iscsi_session *sess;
3577 struct ddb_entry *ddb_entry;
3578 struct scsi_qla_host *ha;
3579
3580 sess = cls_session->dd_data;
3581 ddb_entry = sess->dd_data;
3582 ha = ddb_entry->ha;
3583 if (!iscsi_is_session_online(cls_session)) {
3584 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3585 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3586 " unblock session\n", ha->host_no, __func__,
3587 ddb_entry->fw_ddb_index);
3588 iscsi_unblock_session(ddb_entry->sess);
3589 } else {
3590 /* Trigger relogin */
3591 if (ddb_entry->ddb_type == FLASH_DDB) {
3592 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
3593 test_bit(DF_DISABLE_RELOGIN,
3594 &ddb_entry->flags)))
3595 qla4xxx_arm_relogin_timer(ddb_entry);
3596 } else
3597 iscsi_session_failure(cls_session->dd_data,
3598 ISCSI_ERR_CONN_FAILED);
3599 }
3600 }
3601 }
3602
3603 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3604 {
3605 struct iscsi_session *sess;
3606 struct ddb_entry *ddb_entry;
3607 struct scsi_qla_host *ha;
3608
3609 sess = cls_session->dd_data;
3610 ddb_entry = sess->dd_data;
3611 ha = ddb_entry->ha;
3612 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3613 " unblock session\n", ha->host_no, __func__,
3614 ddb_entry->fw_ddb_index);
3615
3616 iscsi_unblock_session(ddb_entry->sess);
3617
3618 /* Start scan target */
3619 if (test_bit(AF_ONLINE, &ha->flags)) {
3620 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3621 " start scan\n", ha->host_no, __func__,
3622 ddb_entry->fw_ddb_index);
3623 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3624 }
3625 return QLA_SUCCESS;
3626 }
3627
3628 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3629 {
3630 struct iscsi_session *sess;
3631 struct ddb_entry *ddb_entry;
3632 struct scsi_qla_host *ha;
3633 int status = QLA_SUCCESS;
3634
3635 sess = cls_session->dd_data;
3636 ddb_entry = sess->dd_data;
3637 ha = ddb_entry->ha;
3638 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3639 " unblock user space session\n", ha->host_no, __func__,
3640 ddb_entry->fw_ddb_index);
3641
3642 if (!iscsi_is_session_online(cls_session)) {
3643 iscsi_conn_start(ddb_entry->conn);
3644 iscsi_conn_login_event(ddb_entry->conn,
3645 ISCSI_CONN_STATE_LOGGED_IN);
3646 } else {
3647 ql4_printk(KERN_INFO, ha,
3648 "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3649 ha->host_no, __func__, ddb_entry->fw_ddb_index,
3650 cls_session->sid);
3651 status = QLA_ERROR;
3652 }
3653
3654 return status;
3655 }
3656
3657 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3658 {
3659 iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3660 }
3661
3662 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3663 {
3664 uint16_t relogin_timer;
3665 struct iscsi_session *sess;
3666 struct ddb_entry *ddb_entry;
3667 struct scsi_qla_host *ha;
3668
3669 sess = cls_sess->dd_data;
3670 ddb_entry = sess->dd_data;
3671 ha = ddb_entry->ha;
3672
3673 relogin_timer = max(ddb_entry->default_relogin_timeout,
3674 (uint16_t)RELOGIN_TOV);
3675 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3676
3677 DEBUG2(ql4_printk(KERN_INFO, ha,
3678 "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3679 ddb_entry->fw_ddb_index, relogin_timer));
3680
3681 qla4xxx_login_flash_ddb(cls_sess);
3682 }
3683
3684 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3685 {
3686 struct iscsi_session *sess;
3687 struct ddb_entry *ddb_entry;
3688 struct scsi_qla_host *ha;
3689
3690 sess = cls_sess->dd_data;
3691 ddb_entry = sess->dd_data;
3692 ha = ddb_entry->ha;
3693
3694 if (!(ddb_entry->ddb_type == FLASH_DDB))
3695 return;
3696
3697 if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
3698 return;
3699
3700 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3701 !iscsi_is_session_online(cls_sess)) {
3702 DEBUG2(ql4_printk(KERN_INFO, ha,
3703 "relogin issued\n"));
3704 qla4xxx_relogin_flash_ddb(cls_sess);
3705 }
3706 }
3707
3708 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3709 {
3710 if (ha->dpc_thread)
3711 queue_work(ha->dpc_thread, &ha->dpc_work);
3712 }
3713
3714 static struct qla4_work_evt *
3715 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3716 enum qla4_work_type type)
3717 {
3718 struct qla4_work_evt *e;
3719 uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3720
3721 e = kzalloc(size, GFP_ATOMIC);
3722 if (!e)
3723 return NULL;
3724
3725 INIT_LIST_HEAD(&e->list);
3726 e->type = type;
3727 return e;
3728 }
3729
3730 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3731 struct qla4_work_evt *e)
3732 {
3733 unsigned long flags;
3734
3735 spin_lock_irqsave(&ha->work_lock, flags);
3736 list_add_tail(&e->list, &ha->work_list);
3737 spin_unlock_irqrestore(&ha->work_lock, flags);
3738 qla4xxx_wake_dpc(ha);
3739 }
3740
3741 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3742 enum iscsi_host_event_code aen_code,
3743 uint32_t data_size, uint8_t *data)
3744 {
3745 struct qla4_work_evt *e;
3746
3747 e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3748 if (!e)
3749 return QLA_ERROR;
3750
3751 e->u.aen.code = aen_code;
3752 e->u.aen.data_size = data_size;
3753 memcpy(e->u.aen.data, data, data_size);
3754
3755 qla4xxx_post_work(ha, e);
3756
3757 return QLA_SUCCESS;
3758 }
3759
3760 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3761 uint32_t status, uint32_t pid,
3762 uint32_t data_size, uint8_t *data)
3763 {
3764 struct qla4_work_evt *e;
3765
3766 e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3767 if (!e)
3768 return QLA_ERROR;
3769
3770 e->u.ping.status = status;
3771 e->u.ping.pid = pid;
3772 e->u.ping.data_size = data_size;
3773 memcpy(e->u.ping.data, data, data_size);
3774
3775 qla4xxx_post_work(ha, e);
3776
3777 return QLA_SUCCESS;
3778 }
3779
3780 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3781 {
3782 struct qla4_work_evt *e, *tmp;
3783 unsigned long flags;
3784 LIST_HEAD(work);
3785
3786 spin_lock_irqsave(&ha->work_lock, flags);
3787 list_splice_init(&ha->work_list, &work);
3788 spin_unlock_irqrestore(&ha->work_lock, flags);
3789
3790 list_for_each_entry_safe(e, tmp, &work, list) {
3791 list_del_init(&e->list);
3792
3793 switch (e->type) {
3794 case QLA4_EVENT_AEN:
3795 iscsi_post_host_event(ha->host_no,
3796 &qla4xxx_iscsi_transport,
3797 e->u.aen.code,
3798 e->u.aen.data_size,
3799 e->u.aen.data);
3800 break;
3801 case QLA4_EVENT_PING_STATUS:
3802 iscsi_ping_comp_event(ha->host_no,
3803 &qla4xxx_iscsi_transport,
3804 e->u.ping.status,
3805 e->u.ping.pid,
3806 e->u.ping.data_size,
3807 e->u.ping.data);
3808 break;
3809 default:
3810 ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3811 "supported", e->type);
3812 }
3813 kfree(e);
3814 }
3815 }
3816
3817 /**
3818 * qla4xxx_do_dpc - dpc routine
3819 * @data: in our case pointer to adapter structure
3820 *
3821 * This routine is a task that is schedule by the interrupt handler
3822 * to perform the background processing for interrupts. We put it
3823 * on a task queue that is consumed whenever the scheduler runs; that's
3824 * so you can do anything (i.e. put the process to sleep etc). In fact,
3825 * the mid-level tries to sleep when it reaches the driver threshold
3826 * "host->can_queue". This can cause a panic if we were in our interrupt code.
3827 **/
3828 static void qla4xxx_do_dpc(struct work_struct *work)
3829 {
3830 struct scsi_qla_host *ha =
3831 container_of(work, struct scsi_qla_host, dpc_work);
3832 int status = QLA_ERROR;
3833
3834 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3835 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3836 ha->host_no, __func__, ha->flags, ha->dpc_flags))
3837
3838 /* Initialization not yet finished. Don't do anything yet. */
3839 if (!test_bit(AF_INIT_DONE, &ha->flags))
3840 return;
3841
3842 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3843 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3844 ha->host_no, __func__, ha->flags));
3845 return;
3846 }
3847
3848 /* post events to application */
3849 qla4xxx_do_work(ha);
3850
3851 if (is_qla80XX(ha)) {
3852 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3853 if (is_qla8032(ha) || is_qla8042(ha)) {
3854 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3855 __func__);
3856 /* disable pause frame for ISP83xx */
3857 qla4_83xx_disable_pause(ha);
3858 }
3859
3860 ha->isp_ops->idc_lock(ha);
3861 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3862 QLA8XXX_DEV_FAILED);
3863 ha->isp_ops->idc_unlock(ha);
3864 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3865 qla4_8xxx_device_state_handler(ha);
3866 }
3867
3868 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
3869 if (is_qla8042(ha)) {
3870 if (ha->idc_info.info2 &
3871 ENABLE_INTERNAL_LOOPBACK) {
3872 ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
3873 __func__);
3874 status = qla4_84xx_config_acb(ha,
3875 ACB_CONFIG_DISABLE);
3876 if (status != QLA_SUCCESS) {
3877 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
3878 __func__);
3879 }
3880 }
3881 }
3882 qla4_83xx_post_idc_ack(ha);
3883 clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
3884 }
3885
3886 if (is_qla8042(ha) &&
3887 test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
3888 ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
3889 __func__);
3890 if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
3891 QLA_SUCCESS) {
3892 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
3893 __func__);
3894 }
3895 clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
3896 }
3897
3898 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3899 qla4_8xxx_need_qsnt_handler(ha);
3900 }
3901 }
3902
3903 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3904 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3905 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3906 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3907 if ((is_qla8022(ha) && ql4xdontresethba) ||
3908 ((is_qla8032(ha) || is_qla8042(ha)) &&
3909 qla4_83xx_idc_dontreset(ha))) {
3910 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3911 ha->host_no, __func__));
3912 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3913 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3914 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3915 goto dpc_post_reset_ha;
3916 }
3917 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3918 test_bit(DPC_RESET_HA, &ha->dpc_flags))
3919 qla4xxx_recover_adapter(ha);
3920
3921 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3922 uint8_t wait_time = RESET_INTR_TOV;
3923
3924 while ((readw(&ha->reg->ctrl_status) &
3925 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3926 if (--wait_time == 0)
3927 break;
3928 msleep(1000);
3929 }
3930 if (wait_time == 0)
3931 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3932 "bit not cleared-- resetting\n",
3933 ha->host_no, __func__));
3934 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3935 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3936 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3937 status = qla4xxx_recover_adapter(ha);
3938 }
3939 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3940 if (status == QLA_SUCCESS)
3941 ha->isp_ops->enable_intrs(ha);
3942 }
3943 }
3944
3945 dpc_post_reset_ha:
3946 /* ---- process AEN? --- */
3947 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3948 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3949
3950 /* ---- Get DHCP IP Address? --- */
3951 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3952 qla4xxx_get_dhcp_ip_address(ha);
3953
3954 /* ---- relogin device? --- */
3955 if (adapter_up(ha) &&
3956 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3957 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3958 }
3959
3960 /* ---- link change? --- */
3961 if (!test_bit(AF_LOOPBACK, &ha->flags) &&
3962 test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3963 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3964 /* ---- link down? --- */
3965 qla4xxx_mark_all_devices_missing(ha);
3966 } else {
3967 /* ---- link up? --- *
3968 * F/W will auto login to all devices ONLY ONCE after
3969 * link up during driver initialization and runtime
3970 * fatal error recovery. Therefore, the driver must
3971 * manually relogin to devices when recovering from
3972 * connection failures, logouts, expired KATO, etc. */
3973 if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3974 qla4xxx_build_ddb_list(ha, ha->is_reset);
3975 iscsi_host_for_each_session(ha->host,
3976 qla4xxx_login_flash_ddb);
3977 } else
3978 qla4xxx_relogin_all_devices(ha);
3979 }
3980 }
3981 }
3982
3983 /**
3984 * qla4xxx_free_adapter - release the adapter
3985 * @ha: pointer to adapter structure
3986 **/
3987 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3988 {
3989 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3990
3991 /* Turn-off interrupts on the card. */
3992 ha->isp_ops->disable_intrs(ha);
3993
3994 if (is_qla40XX(ha)) {
3995 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3996 &ha->reg->ctrl_status);
3997 readl(&ha->reg->ctrl_status);
3998 } else if (is_qla8022(ha)) {
3999 writel(0, &ha->qla4_82xx_reg->host_int);
4000 readl(&ha->qla4_82xx_reg->host_int);
4001 } else if (is_qla8032(ha) || is_qla8042(ha)) {
4002 writel(0, &ha->qla4_83xx_reg->risc_intr);
4003 readl(&ha->qla4_83xx_reg->risc_intr);
4004 }
4005
4006 /* Remove timer thread, if present */
4007 if (ha->timer_active)
4008 qla4xxx_stop_timer(ha);
4009
4010 /* Kill the kernel thread for this host */
4011 if (ha->dpc_thread)
4012 destroy_workqueue(ha->dpc_thread);
4013
4014 /* Kill the kernel thread for this host */
4015 if (ha->task_wq)
4016 destroy_workqueue(ha->task_wq);
4017
4018 /* Put firmware in known state */
4019 ha->isp_ops->reset_firmware(ha);
4020
4021 if (is_qla80XX(ha)) {
4022 ha->isp_ops->idc_lock(ha);
4023 qla4_8xxx_clear_drv_active(ha);
4024 ha->isp_ops->idc_unlock(ha);
4025 }
4026
4027 /* Detach interrupts */
4028 qla4xxx_free_irqs(ha);
4029
4030 /* free extra memory */
4031 qla4xxx_mem_free(ha);
4032 }
4033
4034 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
4035 {
4036 int status = 0;
4037 unsigned long mem_base, mem_len, db_base, db_len;
4038 struct pci_dev *pdev = ha->pdev;
4039
4040 status = pci_request_regions(pdev, DRIVER_NAME);
4041 if (status) {
4042 printk(KERN_WARNING
4043 "scsi(%ld) Failed to reserve PIO regions (%s) "
4044 "status=%d\n", ha->host_no, pci_name(pdev), status);
4045 goto iospace_error_exit;
4046 }
4047
4048 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
4049 __func__, pdev->revision));
4050 ha->revision_id = pdev->revision;
4051
4052 /* remap phys address */
4053 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
4054 mem_len = pci_resource_len(pdev, 0);
4055 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
4056 __func__, mem_base, mem_len));
4057
4058 /* mapping of pcibase pointer */
4059 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
4060 if (!ha->nx_pcibase) {
4061 printk(KERN_ERR
4062 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
4063 pci_release_regions(ha->pdev);
4064 goto iospace_error_exit;
4065 }
4066
4067 /* Mapping of IO base pointer, door bell read and write pointer */
4068
4069 /* mapping of IO base pointer */
4070 if (is_qla8022(ha)) {
4071 ha->qla4_82xx_reg = (struct device_reg_82xx __iomem *)
4072 ((uint8_t *)ha->nx_pcibase + 0xbc000 +
4073 (ha->pdev->devfn << 11));
4074 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
4075 QLA82XX_CAM_RAM_DB2);
4076 } else if (is_qla8032(ha) || is_qla8042(ha)) {
4077 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
4078 ((uint8_t *)ha->nx_pcibase);
4079 }
4080
4081 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
4082 db_len = pci_resource_len(pdev, 4);
4083
4084 return 0;
4085 iospace_error_exit:
4086 return -ENOMEM;
4087 }
4088
4089 /***
4090 * qla4xxx_iospace_config - maps registers
4091 * @ha: pointer to adapter structure
4092 *
4093 * This routines maps HBA's registers from the pci address space
4094 * into the kernel virtual address space for memory mapped i/o.
4095 **/
4096 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
4097 {
4098 unsigned long pio, pio_len, pio_flags;
4099 unsigned long mmio, mmio_len, mmio_flags;
4100
4101 pio = pci_resource_start(ha->pdev, 0);
4102 pio_len = pci_resource_len(ha->pdev, 0);
4103 pio_flags = pci_resource_flags(ha->pdev, 0);
4104 if (pio_flags & IORESOURCE_IO) {
4105 if (pio_len < MIN_IOBASE_LEN) {
4106 ql4_printk(KERN_WARNING, ha,
4107 "Invalid PCI I/O region size\n");
4108 pio = 0;
4109 }
4110 } else {
4111 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
4112 pio = 0;
4113 }
4114
4115 /* Use MMIO operations for all accesses. */
4116 mmio = pci_resource_start(ha->pdev, 1);
4117 mmio_len = pci_resource_len(ha->pdev, 1);
4118 mmio_flags = pci_resource_flags(ha->pdev, 1);
4119
4120 if (!(mmio_flags & IORESOURCE_MEM)) {
4121 ql4_printk(KERN_ERR, ha,
4122 "region #0 not an MMIO resource, aborting\n");
4123
4124 goto iospace_error_exit;
4125 }
4126
4127 if (mmio_len < MIN_IOBASE_LEN) {
4128 ql4_printk(KERN_ERR, ha,
4129 "Invalid PCI mem region size, aborting\n");
4130 goto iospace_error_exit;
4131 }
4132
4133 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
4134 ql4_printk(KERN_WARNING, ha,
4135 "Failed to reserve PIO/MMIO regions\n");
4136
4137 goto iospace_error_exit;
4138 }
4139
4140 ha->pio_address = pio;
4141 ha->pio_length = pio_len;
4142 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
4143 if (!ha->reg) {
4144 ql4_printk(KERN_ERR, ha,
4145 "cannot remap MMIO, aborting\n");
4146
4147 goto iospace_error_exit;
4148 }
4149
4150 return 0;
4151
4152 iospace_error_exit:
4153 return -ENOMEM;
4154 }
4155
4156 static struct isp_operations qla4xxx_isp_ops = {
4157 .iospace_config = qla4xxx_iospace_config,
4158 .pci_config = qla4xxx_pci_config,
4159 .disable_intrs = qla4xxx_disable_intrs,
4160 .enable_intrs = qla4xxx_enable_intrs,
4161 .start_firmware = qla4xxx_start_firmware,
4162 .intr_handler = qla4xxx_intr_handler,
4163 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
4164 .reset_chip = qla4xxx_soft_reset,
4165 .reset_firmware = qla4xxx_hw_reset,
4166 .queue_iocb = qla4xxx_queue_iocb,
4167 .complete_iocb = qla4xxx_complete_iocb,
4168 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
4169 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
4170 .get_sys_info = qla4xxx_get_sys_info,
4171 .queue_mailbox_command = qla4xxx_queue_mbox_cmd,
4172 .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
4173 };
4174
4175 static struct isp_operations qla4_82xx_isp_ops = {
4176 .iospace_config = qla4_8xxx_iospace_config,
4177 .pci_config = qla4_8xxx_pci_config,
4178 .disable_intrs = qla4_82xx_disable_intrs,
4179 .enable_intrs = qla4_82xx_enable_intrs,
4180 .start_firmware = qla4_8xxx_load_risc,
4181 .restart_firmware = qla4_82xx_try_start_fw,
4182 .intr_handler = qla4_82xx_intr_handler,
4183 .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
4184 .need_reset = qla4_8xxx_need_reset,
4185 .reset_chip = qla4_82xx_isp_reset,
4186 .reset_firmware = qla4_8xxx_stop_firmware,
4187 .queue_iocb = qla4_82xx_queue_iocb,
4188 .complete_iocb = qla4_82xx_complete_iocb,
4189 .rd_shdw_req_q_out = qla4_82xx_rd_shdw_req_q_out,
4190 .rd_shdw_rsp_q_in = qla4_82xx_rd_shdw_rsp_q_in,
4191 .get_sys_info = qla4_8xxx_get_sys_info,
4192 .rd_reg_direct = qla4_82xx_rd_32,
4193 .wr_reg_direct = qla4_82xx_wr_32,
4194 .rd_reg_indirect = qla4_82xx_md_rd_32,
4195 .wr_reg_indirect = qla4_82xx_md_wr_32,
4196 .idc_lock = qla4_82xx_idc_lock,
4197 .idc_unlock = qla4_82xx_idc_unlock,
4198 .rom_lock_recovery = qla4_82xx_rom_lock_recovery,
4199 .queue_mailbox_command = qla4_82xx_queue_mbox_cmd,
4200 .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
4201 };
4202
4203 static struct isp_operations qla4_83xx_isp_ops = {
4204 .iospace_config = qla4_8xxx_iospace_config,
4205 .pci_config = qla4_8xxx_pci_config,
4206 .disable_intrs = qla4_83xx_disable_intrs,
4207 .enable_intrs = qla4_83xx_enable_intrs,
4208 .start_firmware = qla4_8xxx_load_risc,
4209 .restart_firmware = qla4_83xx_start_firmware,
4210 .intr_handler = qla4_83xx_intr_handler,
4211 .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
4212 .need_reset = qla4_8xxx_need_reset,
4213 .reset_chip = qla4_83xx_isp_reset,
4214 .reset_firmware = qla4_8xxx_stop_firmware,
4215 .queue_iocb = qla4_83xx_queue_iocb,
4216 .complete_iocb = qla4_83xx_complete_iocb,
4217 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
4218 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
4219 .get_sys_info = qla4_8xxx_get_sys_info,
4220 .rd_reg_direct = qla4_83xx_rd_reg,
4221 .wr_reg_direct = qla4_83xx_wr_reg,
4222 .rd_reg_indirect = qla4_83xx_rd_reg_indirect,
4223 .wr_reg_indirect = qla4_83xx_wr_reg_indirect,
4224 .idc_lock = qla4_83xx_drv_lock,
4225 .idc_unlock = qla4_83xx_drv_unlock,
4226 .rom_lock_recovery = qla4_83xx_rom_lock_recovery,
4227 .queue_mailbox_command = qla4_83xx_queue_mbox_cmd,
4228 .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
4229 };
4230
4231 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4232 {
4233 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
4234 }
4235
4236 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4237 {
4238 return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
4239 }
4240
4241 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4242 {
4243 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
4244 }
4245
4246 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4247 {
4248 return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
4249 }
4250
4251 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
4252 {
4253 struct scsi_qla_host *ha = data;
4254 char *str = buf;
4255 int rc;
4256
4257 switch (type) {
4258 case ISCSI_BOOT_ETH_FLAGS:
4259 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4260 break;
4261 case ISCSI_BOOT_ETH_INDEX:
4262 rc = sprintf(str, "0\n");
4263 break;
4264 case ISCSI_BOOT_ETH_MAC:
4265 rc = sysfs_format_mac(str, ha->my_mac,
4266 MAC_ADDR_LEN);
4267 break;
4268 default:
4269 rc = -ENOSYS;
4270 break;
4271 }
4272 return rc;
4273 }
4274
4275 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
4276 {
4277 int rc;
4278
4279 switch (type) {
4280 case ISCSI_BOOT_ETH_FLAGS:
4281 case ISCSI_BOOT_ETH_MAC:
4282 case ISCSI_BOOT_ETH_INDEX:
4283 rc = S_IRUGO;
4284 break;
4285 default:
4286 rc = 0;
4287 break;
4288 }
4289 return rc;
4290 }
4291
4292 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
4293 {
4294 struct scsi_qla_host *ha = data;
4295 char *str = buf;
4296 int rc;
4297
4298 switch (type) {
4299 case ISCSI_BOOT_INI_INITIATOR_NAME:
4300 rc = sprintf(str, "%s\n", ha->name_string);
4301 break;
4302 default:
4303 rc = -ENOSYS;
4304 break;
4305 }
4306 return rc;
4307 }
4308
4309 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
4310 {
4311 int rc;
4312
4313 switch (type) {
4314 case ISCSI_BOOT_INI_INITIATOR_NAME:
4315 rc = S_IRUGO;
4316 break;
4317 default:
4318 rc = 0;
4319 break;
4320 }
4321 return rc;
4322 }
4323
4324 static ssize_t
4325 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
4326 char *buf)
4327 {
4328 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4329 char *str = buf;
4330 int rc;
4331
4332 switch (type) {
4333 case ISCSI_BOOT_TGT_NAME:
4334 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
4335 break;
4336 case ISCSI_BOOT_TGT_IP_ADDR:
4337 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
4338 rc = sprintf(buf, "%pI4\n",
4339 &boot_conn->dest_ipaddr.ip_address);
4340 else
4341 rc = sprintf(str, "%pI6\n",
4342 &boot_conn->dest_ipaddr.ip_address);
4343 break;
4344 case ISCSI_BOOT_TGT_PORT:
4345 rc = sprintf(str, "%d\n", boot_conn->dest_port);
4346 break;
4347 case ISCSI_BOOT_TGT_CHAP_NAME:
4348 rc = sprintf(str, "%.*s\n",
4349 boot_conn->chap.target_chap_name_length,
4350 (char *)&boot_conn->chap.target_chap_name);
4351 break;
4352 case ISCSI_BOOT_TGT_CHAP_SECRET:
4353 rc = sprintf(str, "%.*s\n",
4354 boot_conn->chap.target_secret_length,
4355 (char *)&boot_conn->chap.target_secret);
4356 break;
4357 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4358 rc = sprintf(str, "%.*s\n",
4359 boot_conn->chap.intr_chap_name_length,
4360 (char *)&boot_conn->chap.intr_chap_name);
4361 break;
4362 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4363 rc = sprintf(str, "%.*s\n",
4364 boot_conn->chap.intr_secret_length,
4365 (char *)&boot_conn->chap.intr_secret);
4366 break;
4367 case ISCSI_BOOT_TGT_FLAGS:
4368 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4369 break;
4370 case ISCSI_BOOT_TGT_NIC_ASSOC:
4371 rc = sprintf(str, "0\n");
4372 break;
4373 default:
4374 rc = -ENOSYS;
4375 break;
4376 }
4377 return rc;
4378 }
4379
4380 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
4381 {
4382 struct scsi_qla_host *ha = data;
4383 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
4384
4385 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4386 }
4387
4388 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
4389 {
4390 struct scsi_qla_host *ha = data;
4391 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
4392
4393 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4394 }
4395
4396 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
4397 {
4398 int rc;
4399
4400 switch (type) {
4401 case ISCSI_BOOT_TGT_NAME:
4402 case ISCSI_BOOT_TGT_IP_ADDR:
4403 case ISCSI_BOOT_TGT_PORT:
4404 case ISCSI_BOOT_TGT_CHAP_NAME:
4405 case ISCSI_BOOT_TGT_CHAP_SECRET:
4406 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4407 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4408 case ISCSI_BOOT_TGT_NIC_ASSOC:
4409 case ISCSI_BOOT_TGT_FLAGS:
4410 rc = S_IRUGO;
4411 break;
4412 default:
4413 rc = 0;
4414 break;
4415 }
4416 return rc;
4417 }
4418
4419 static void qla4xxx_boot_release(void *data)
4420 {
4421 struct scsi_qla_host *ha = data;
4422
4423 scsi_host_put(ha->host);
4424 }
4425
4426 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
4427 {
4428 dma_addr_t buf_dma;
4429 uint32_t addr, pri_addr, sec_addr;
4430 uint32_t offset;
4431 uint16_t func_num;
4432 uint8_t val;
4433 uint8_t *buf = NULL;
4434 size_t size = 13 * sizeof(uint8_t);
4435 int ret = QLA_SUCCESS;
4436
4437 func_num = PCI_FUNC(ha->pdev->devfn);
4438
4439 ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
4440 __func__, ha->pdev->device, func_num);
4441
4442 if (is_qla40XX(ha)) {
4443 if (func_num == 1) {
4444 addr = NVRAM_PORT0_BOOT_MODE;
4445 pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
4446 sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
4447 } else if (func_num == 3) {
4448 addr = NVRAM_PORT1_BOOT_MODE;
4449 pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
4450 sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
4451 } else {
4452 ret = QLA_ERROR;
4453 goto exit_boot_info;
4454 }
4455
4456 /* Check Boot Mode */
4457 val = rd_nvram_byte(ha, addr);
4458 if (!(val & 0x07)) {
4459 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
4460 "options : 0x%x\n", __func__, val));
4461 ret = QLA_ERROR;
4462 goto exit_boot_info;
4463 }
4464
4465 /* get primary valid target index */
4466 val = rd_nvram_byte(ha, pri_addr);
4467 if (val & BIT_7)
4468 ddb_index[0] = (val & 0x7f);
4469
4470 /* get secondary valid target index */
4471 val = rd_nvram_byte(ha, sec_addr);
4472 if (val & BIT_7)
4473 ddb_index[1] = (val & 0x7f);
4474
4475 } else if (is_qla80XX(ha)) {
4476 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4477 &buf_dma, GFP_KERNEL);
4478 if (!buf) {
4479 DEBUG2(ql4_printk(KERN_ERR, ha,
4480 "%s: Unable to allocate dma buffer\n",
4481 __func__));
4482 ret = QLA_ERROR;
4483 goto exit_boot_info;
4484 }
4485
4486 if (ha->port_num == 0)
4487 offset = BOOT_PARAM_OFFSET_PORT0;
4488 else if (ha->port_num == 1)
4489 offset = BOOT_PARAM_OFFSET_PORT1;
4490 else {
4491 ret = QLA_ERROR;
4492 goto exit_boot_info_free;
4493 }
4494 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4495 offset;
4496 if (qla4xxx_get_flash(ha, buf_dma, addr,
4497 13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4498 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4499 " failed\n", ha->host_no, __func__));
4500 ret = QLA_ERROR;
4501 goto exit_boot_info_free;
4502 }
4503 /* Check Boot Mode */
4504 if (!(buf[1] & 0x07)) {
4505 DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4506 " : 0x%x\n", buf[1]));
4507 ret = QLA_ERROR;
4508 goto exit_boot_info_free;
4509 }
4510
4511 /* get primary valid target index */
4512 if (buf[2] & BIT_7)
4513 ddb_index[0] = buf[2] & 0x7f;
4514
4515 /* get secondary valid target index */
4516 if (buf[11] & BIT_7)
4517 ddb_index[1] = buf[11] & 0x7f;
4518 } else {
4519 ret = QLA_ERROR;
4520 goto exit_boot_info;
4521 }
4522
4523 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4524 " target ID %d\n", __func__, ddb_index[0],
4525 ddb_index[1]));
4526
4527 exit_boot_info_free:
4528 dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4529 exit_boot_info:
4530 ha->pri_ddb_idx = ddb_index[0];
4531 ha->sec_ddb_idx = ddb_index[1];
4532 return ret;
4533 }
4534
4535 /**
4536 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4537 * @ha: pointer to adapter structure
4538 * @username: CHAP username to be returned
4539 * @password: CHAP password to be returned
4540 *
4541 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4542 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4543 * So from the CHAP cache find the first BIDI CHAP entry and set it
4544 * to the boot record in sysfs.
4545 **/
4546 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4547 char *password)
4548 {
4549 int i, ret = -EINVAL;
4550 int max_chap_entries = 0;
4551 struct ql4_chap_table *chap_table;
4552
4553 if (is_qla80XX(ha))
4554 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4555 sizeof(struct ql4_chap_table);
4556 else
4557 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4558
4559 if (!ha->chap_list) {
4560 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4561 return ret;
4562 }
4563
4564 mutex_lock(&ha->chap_sem);
4565 for (i = 0; i < max_chap_entries; i++) {
4566 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4567 if (chap_table->cookie !=
4568 __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4569 continue;
4570 }
4571
4572 if (chap_table->flags & BIT_7) /* local */
4573 continue;
4574
4575 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4576 continue;
4577
4578 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4579 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4580 ret = 0;
4581 break;
4582 }
4583 mutex_unlock(&ha->chap_sem);
4584
4585 return ret;
4586 }
4587
4588
4589 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4590 struct ql4_boot_session_info *boot_sess,
4591 uint16_t ddb_index)
4592 {
4593 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4594 struct dev_db_entry *fw_ddb_entry;
4595 dma_addr_t fw_ddb_entry_dma;
4596 uint16_t idx;
4597 uint16_t options;
4598 int ret = QLA_SUCCESS;
4599
4600 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4601 &fw_ddb_entry_dma, GFP_KERNEL);
4602 if (!fw_ddb_entry) {
4603 DEBUG2(ql4_printk(KERN_ERR, ha,
4604 "%s: Unable to allocate dma buffer.\n",
4605 __func__));
4606 ret = QLA_ERROR;
4607 return ret;
4608 }
4609
4610 if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4611 fw_ddb_entry_dma, ddb_index)) {
4612 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4613 "index [%d]\n", __func__, ddb_index));
4614 ret = QLA_ERROR;
4615 goto exit_boot_target;
4616 }
4617
4618 /* Update target name and IP from DDB */
4619 memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4620 min(sizeof(boot_sess->target_name),
4621 sizeof(fw_ddb_entry->iscsi_name)));
4622
4623 options = le16_to_cpu(fw_ddb_entry->options);
4624 if (options & DDB_OPT_IPV6_DEVICE) {
4625 memcpy(&boot_conn->dest_ipaddr.ip_address,
4626 &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4627 } else {
4628 boot_conn->dest_ipaddr.ip_type = 0x1;
4629 memcpy(&boot_conn->dest_ipaddr.ip_address,
4630 &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4631 }
4632
4633 boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4634
4635 /* update chap information */
4636 idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4637
4638 if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4639
4640 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4641
4642 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4643 target_chap_name,
4644 (char *)&boot_conn->chap.target_secret,
4645 idx);
4646 if (ret) {
4647 ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4648 ret = QLA_ERROR;
4649 goto exit_boot_target;
4650 }
4651
4652 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4653 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4654 }
4655
4656 if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4657
4658 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4659
4660 ret = qla4xxx_get_bidi_chap(ha,
4661 (char *)&boot_conn->chap.intr_chap_name,
4662 (char *)&boot_conn->chap.intr_secret);
4663
4664 if (ret) {
4665 ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4666 ret = QLA_ERROR;
4667 goto exit_boot_target;
4668 }
4669
4670 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4671 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4672 }
4673
4674 exit_boot_target:
4675 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4676 fw_ddb_entry, fw_ddb_entry_dma);
4677 return ret;
4678 }
4679
4680 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4681 {
4682 uint16_t ddb_index[2];
4683 int ret = QLA_ERROR;
4684 int rval;
4685
4686 memset(ddb_index, 0, sizeof(ddb_index));
4687 ddb_index[0] = 0xffff;
4688 ddb_index[1] = 0xffff;
4689 ret = get_fw_boot_info(ha, ddb_index);
4690 if (ret != QLA_SUCCESS) {
4691 DEBUG2(ql4_printk(KERN_INFO, ha,
4692 "%s: No boot target configured.\n", __func__));
4693 return ret;
4694 }
4695
4696 if (ql4xdisablesysfsboot)
4697 return QLA_SUCCESS;
4698
4699 if (ddb_index[0] == 0xffff)
4700 goto sec_target;
4701
4702 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4703 ddb_index[0]);
4704 if (rval != QLA_SUCCESS) {
4705 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4706 "configured\n", __func__));
4707 } else
4708 ret = QLA_SUCCESS;
4709
4710 sec_target:
4711 if (ddb_index[1] == 0xffff)
4712 goto exit_get_boot_info;
4713
4714 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4715 ddb_index[1]);
4716 if (rval != QLA_SUCCESS) {
4717 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4718 " configured\n", __func__));
4719 } else
4720 ret = QLA_SUCCESS;
4721
4722 exit_get_boot_info:
4723 return ret;
4724 }
4725
4726 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4727 {
4728 struct iscsi_boot_kobj *boot_kobj;
4729
4730 if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4731 return QLA_ERROR;
4732
4733 if (ql4xdisablesysfsboot) {
4734 ql4_printk(KERN_INFO, ha,
4735 "%s: syfsboot disabled - driver will trigger login "
4736 "and publish session for discovery .\n", __func__);
4737 return QLA_SUCCESS;
4738 }
4739
4740
4741 ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4742 if (!ha->boot_kset)
4743 goto kset_free;
4744
4745 if (!scsi_host_get(ha->host))
4746 goto kset_free;
4747 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4748 qla4xxx_show_boot_tgt_pri_info,
4749 qla4xxx_tgt_get_attr_visibility,
4750 qla4xxx_boot_release);
4751 if (!boot_kobj)
4752 goto put_host;
4753
4754 if (!scsi_host_get(ha->host))
4755 goto kset_free;
4756 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4757 qla4xxx_show_boot_tgt_sec_info,
4758 qla4xxx_tgt_get_attr_visibility,
4759 qla4xxx_boot_release);
4760 if (!boot_kobj)
4761 goto put_host;
4762
4763 if (!scsi_host_get(ha->host))
4764 goto kset_free;
4765 boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4766 qla4xxx_show_boot_ini_info,
4767 qla4xxx_ini_get_attr_visibility,
4768 qla4xxx_boot_release);
4769 if (!boot_kobj)
4770 goto put_host;
4771
4772 if (!scsi_host_get(ha->host))
4773 goto kset_free;
4774 boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4775 qla4xxx_show_boot_eth_info,
4776 qla4xxx_eth_get_attr_visibility,
4777 qla4xxx_boot_release);
4778 if (!boot_kobj)
4779 goto put_host;
4780
4781 return QLA_SUCCESS;
4782
4783 put_host:
4784 scsi_host_put(ha->host);
4785 kset_free:
4786 iscsi_boot_destroy_kset(ha->boot_kset);
4787 return -ENOMEM;
4788 }
4789
4790
4791 /**
4792 * qla4xxx_create chap_list - Create CHAP list from FLASH
4793 * @ha: pointer to adapter structure
4794 *
4795 * Read flash and make a list of CHAP entries, during login when a CHAP entry
4796 * is received, it will be checked in this list. If entry exist then the CHAP
4797 * entry index is set in the DDB. If CHAP entry does not exist in this list
4798 * then a new entry is added in FLASH in CHAP table and the index obtained is
4799 * used in the DDB.
4800 **/
4801 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4802 {
4803 int rval = 0;
4804 uint8_t *chap_flash_data = NULL;
4805 uint32_t offset;
4806 dma_addr_t chap_dma;
4807 uint32_t chap_size = 0;
4808
4809 if (is_qla40XX(ha))
4810 chap_size = MAX_CHAP_ENTRIES_40XX *
4811 sizeof(struct ql4_chap_table);
4812 else /* Single region contains CHAP info for both
4813 * ports which is divided into half for each port.
4814 */
4815 chap_size = ha->hw.flt_chap_size / 2;
4816
4817 chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4818 &chap_dma, GFP_KERNEL);
4819 if (!chap_flash_data) {
4820 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4821 return;
4822 }
4823 if (is_qla40XX(ha))
4824 offset = FLASH_CHAP_OFFSET;
4825 else {
4826 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4827 if (ha->port_num == 1)
4828 offset += chap_size;
4829 }
4830
4831 rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4832 if (rval != QLA_SUCCESS)
4833 goto exit_chap_list;
4834
4835 if (ha->chap_list == NULL)
4836 ha->chap_list = vmalloc(chap_size);
4837 if (ha->chap_list == NULL) {
4838 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4839 goto exit_chap_list;
4840 }
4841
4842 memcpy(ha->chap_list, chap_flash_data, chap_size);
4843
4844 exit_chap_list:
4845 dma_free_coherent(&ha->pdev->dev, chap_size,
4846 chap_flash_data, chap_dma);
4847 }
4848
4849 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4850 struct ql4_tuple_ddb *tddb)
4851 {
4852 struct scsi_qla_host *ha;
4853 struct iscsi_cls_session *cls_sess;
4854 struct iscsi_cls_conn *cls_conn;
4855 struct iscsi_session *sess;
4856 struct iscsi_conn *conn;
4857
4858 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4859 ha = ddb_entry->ha;
4860 cls_sess = ddb_entry->sess;
4861 sess = cls_sess->dd_data;
4862 cls_conn = ddb_entry->conn;
4863 conn = cls_conn->dd_data;
4864
4865 tddb->tpgt = sess->tpgt;
4866 tddb->port = conn->persistent_port;
4867 strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4868 strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4869 }
4870
4871 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4872 struct ql4_tuple_ddb *tddb,
4873 uint8_t *flash_isid)
4874 {
4875 uint16_t options = 0;
4876
4877 tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4878 memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4879 min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4880
4881 options = le16_to_cpu(fw_ddb_entry->options);
4882 if (options & DDB_OPT_IPV6_DEVICE)
4883 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4884 else
4885 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4886
4887 tddb->port = le16_to_cpu(fw_ddb_entry->port);
4888
4889 if (flash_isid == NULL)
4890 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4891 sizeof(tddb->isid));
4892 else
4893 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4894 }
4895
4896 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4897 struct ql4_tuple_ddb *old_tddb,
4898 struct ql4_tuple_ddb *new_tddb,
4899 uint8_t is_isid_compare)
4900 {
4901 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4902 return QLA_ERROR;
4903
4904 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4905 return QLA_ERROR;
4906
4907 if (old_tddb->port != new_tddb->port)
4908 return QLA_ERROR;
4909
4910 /* For multi sessions, driver generates the ISID, so do not compare
4911 * ISID in reset path since it would be a comparison between the
4912 * driver generated ISID and firmware generated ISID. This could
4913 * lead to adding duplicated DDBs in the list as driver generated
4914 * ISID would not match firmware generated ISID.
4915 */
4916 if (is_isid_compare) {
4917 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4918 "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4919 __func__, old_tddb->isid[5], old_tddb->isid[4],
4920 old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4921 old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4922 new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4923 new_tddb->isid[0]));
4924
4925 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4926 sizeof(old_tddb->isid)))
4927 return QLA_ERROR;
4928 }
4929
4930 DEBUG2(ql4_printk(KERN_INFO, ha,
4931 "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4932 old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4933 old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4934 new_tddb->ip_addr, new_tddb->iscsi_name));
4935
4936 return QLA_SUCCESS;
4937 }
4938
4939 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4940 struct dev_db_entry *fw_ddb_entry)
4941 {
4942 struct ddb_entry *ddb_entry;
4943 struct ql4_tuple_ddb *fw_tddb = NULL;
4944 struct ql4_tuple_ddb *tmp_tddb = NULL;
4945 int idx;
4946 int ret = QLA_ERROR;
4947
4948 fw_tddb = vzalloc(sizeof(*fw_tddb));
4949 if (!fw_tddb) {
4950 DEBUG2(ql4_printk(KERN_WARNING, ha,
4951 "Memory Allocation failed.\n"));
4952 ret = QLA_SUCCESS;
4953 goto exit_check;
4954 }
4955
4956 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4957 if (!tmp_tddb) {
4958 DEBUG2(ql4_printk(KERN_WARNING, ha,
4959 "Memory Allocation failed.\n"));
4960 ret = QLA_SUCCESS;
4961 goto exit_check;
4962 }
4963
4964 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4965
4966 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4967 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4968 if (ddb_entry == NULL)
4969 continue;
4970
4971 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4972 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4973 ret = QLA_SUCCESS; /* found */
4974 goto exit_check;
4975 }
4976 }
4977
4978 exit_check:
4979 if (fw_tddb)
4980 vfree(fw_tddb);
4981 if (tmp_tddb)
4982 vfree(tmp_tddb);
4983 return ret;
4984 }
4985
4986 /**
4987 * qla4xxx_check_existing_isid - check if target with same isid exist
4988 * in target list
4989 * @list_nt: list of target
4990 * @isid: isid to check
4991 *
4992 * This routine return QLA_SUCCESS if target with same isid exist
4993 **/
4994 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4995 {
4996 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4997 struct dev_db_entry *fw_ddb_entry;
4998
4999 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5000 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
5001
5002 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
5003 sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
5004 return QLA_SUCCESS;
5005 }
5006 }
5007 return QLA_ERROR;
5008 }
5009
5010 /**
5011 * qla4xxx_update_isid - compare ddbs and updated isid
5012 * @ha: Pointer to host adapter structure.
5013 * @list_nt: list of nt target
5014 * @fw_ddb_entry: firmware ddb entry
5015 *
5016 * This routine update isid if ddbs have same iqn, same isid and
5017 * different IP addr.
5018 * Return QLA_SUCCESS if isid is updated.
5019 **/
5020 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
5021 struct list_head *list_nt,
5022 struct dev_db_entry *fw_ddb_entry)
5023 {
5024 uint8_t base_value, i;
5025
5026 base_value = fw_ddb_entry->isid[1] & 0x1f;
5027 for (i = 0; i < 8; i++) {
5028 fw_ddb_entry->isid[1] = (base_value | (i << 5));
5029 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
5030 break;
5031 }
5032
5033 if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
5034 return QLA_ERROR;
5035
5036 return QLA_SUCCESS;
5037 }
5038
5039 /**
5040 * qla4xxx_should_update_isid - check if isid need to update
5041 * @ha: Pointer to host adapter structure.
5042 * @old_tddb: ddb tuple
5043 * @new_tddb: ddb tuple
5044 *
5045 * Return QLA_SUCCESS if different IP, different PORT, same iqn,
5046 * same isid
5047 **/
5048 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
5049 struct ql4_tuple_ddb *old_tddb,
5050 struct ql4_tuple_ddb *new_tddb)
5051 {
5052 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
5053 /* Same ip */
5054 if (old_tddb->port == new_tddb->port)
5055 return QLA_ERROR;
5056 }
5057
5058 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
5059 /* different iqn */
5060 return QLA_ERROR;
5061
5062 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
5063 sizeof(old_tddb->isid)))
5064 /* different isid */
5065 return QLA_ERROR;
5066
5067 return QLA_SUCCESS;
5068 }
5069
5070 /**
5071 * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
5072 * @ha: Pointer to host adapter structure.
5073 * @list_nt: list of nt target.
5074 * @fw_ddb_entry: firmware ddb entry.
5075 *
5076 * This routine check if fw_ddb_entry already exists in list_nt to avoid
5077 * duplicate ddb in list_nt.
5078 * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
5079 * Note: This function also update isid of DDB if required.
5080 **/
5081
5082 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
5083 struct list_head *list_nt,
5084 struct dev_db_entry *fw_ddb_entry)
5085 {
5086 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
5087 struct ql4_tuple_ddb *fw_tddb = NULL;
5088 struct ql4_tuple_ddb *tmp_tddb = NULL;
5089 int rval, ret = QLA_ERROR;
5090
5091 fw_tddb = vzalloc(sizeof(*fw_tddb));
5092 if (!fw_tddb) {
5093 DEBUG2(ql4_printk(KERN_WARNING, ha,
5094 "Memory Allocation failed.\n"));
5095 ret = QLA_SUCCESS;
5096 goto exit_check;
5097 }
5098
5099 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
5100 if (!tmp_tddb) {
5101 DEBUG2(ql4_printk(KERN_WARNING, ha,
5102 "Memory Allocation failed.\n"));
5103 ret = QLA_SUCCESS;
5104 goto exit_check;
5105 }
5106
5107 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
5108
5109 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5110 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
5111 nt_ddb_idx->flash_isid);
5112 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
5113 /* found duplicate ddb */
5114 if (ret == QLA_SUCCESS)
5115 goto exit_check;
5116 }
5117
5118 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
5119 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
5120
5121 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
5122 if (ret == QLA_SUCCESS) {
5123 rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
5124 if (rval == QLA_SUCCESS)
5125 ret = QLA_ERROR;
5126 else
5127 ret = QLA_SUCCESS;
5128
5129 goto exit_check;
5130 }
5131 }
5132
5133 exit_check:
5134 if (fw_tddb)
5135 vfree(fw_tddb);
5136 if (tmp_tddb)
5137 vfree(tmp_tddb);
5138 return ret;
5139 }
5140
5141 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
5142 {
5143 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5144
5145 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5146 list_del_init(&ddb_idx->list);
5147 vfree(ddb_idx);
5148 }
5149 }
5150
5151 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
5152 struct dev_db_entry *fw_ddb_entry)
5153 {
5154 struct iscsi_endpoint *ep;
5155 struct sockaddr_in *addr;
5156 struct sockaddr_in6 *addr6;
5157 struct sockaddr *t_addr;
5158 struct sockaddr_storage *dst_addr;
5159 char *ip;
5160
5161 /* TODO: need to destroy on unload iscsi_endpoint*/
5162 dst_addr = vmalloc(sizeof(*dst_addr));
5163 if (!dst_addr)
5164 return NULL;
5165
5166 if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
5167 t_addr = (struct sockaddr *)dst_addr;
5168 t_addr->sa_family = AF_INET6;
5169 addr6 = (struct sockaddr_in6 *)dst_addr;
5170 ip = (char *)&addr6->sin6_addr;
5171 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
5172 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
5173
5174 } else {
5175 t_addr = (struct sockaddr *)dst_addr;
5176 t_addr->sa_family = AF_INET;
5177 addr = (struct sockaddr_in *)dst_addr;
5178 ip = (char *)&addr->sin_addr;
5179 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
5180 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
5181 }
5182
5183 ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
5184 vfree(dst_addr);
5185 return ep;
5186 }
5187
5188 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
5189 {
5190 if (ql4xdisablesysfsboot)
5191 return QLA_SUCCESS;
5192 if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
5193 return QLA_ERROR;
5194 return QLA_SUCCESS;
5195 }
5196
5197 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
5198 struct ddb_entry *ddb_entry,
5199 uint16_t idx)
5200 {
5201 uint16_t def_timeout;
5202
5203 ddb_entry->ddb_type = FLASH_DDB;
5204 ddb_entry->fw_ddb_index = INVALID_ENTRY;
5205 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
5206 ddb_entry->ha = ha;
5207 ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
5208 ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
5209
5210 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
5211 atomic_set(&ddb_entry->relogin_timer, 0);
5212 atomic_set(&ddb_entry->relogin_retry_count, 0);
5213 def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
5214 ddb_entry->default_relogin_timeout =
5215 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
5216 def_timeout : LOGIN_TOV;
5217 ddb_entry->default_time2wait =
5218 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
5219
5220 if (ql4xdisablesysfsboot &&
5221 (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
5222 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
5223 }
5224
5225 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
5226 {
5227 uint32_t idx = 0;
5228 uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
5229 uint32_t sts[MBOX_REG_COUNT];
5230 uint32_t ip_state;
5231 unsigned long wtime;
5232 int ret;
5233
5234 wtime = jiffies + (HZ * IP_CONFIG_TOV);
5235 do {
5236 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
5237 if (ip_idx[idx] == -1)
5238 continue;
5239
5240 ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
5241
5242 if (ret == QLA_ERROR) {
5243 ip_idx[idx] = -1;
5244 continue;
5245 }
5246
5247 ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
5248
5249 DEBUG2(ql4_printk(KERN_INFO, ha,
5250 "Waiting for IP state for idx = %d, state = 0x%x\n",
5251 ip_idx[idx], ip_state));
5252 if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
5253 ip_state == IP_ADDRSTATE_INVALID ||
5254 ip_state == IP_ADDRSTATE_PREFERRED ||
5255 ip_state == IP_ADDRSTATE_DEPRICATED ||
5256 ip_state == IP_ADDRSTATE_DISABLING)
5257 ip_idx[idx] = -1;
5258 }
5259
5260 /* Break if all IP states checked */
5261 if ((ip_idx[0] == -1) &&
5262 (ip_idx[1] == -1) &&
5263 (ip_idx[2] == -1) &&
5264 (ip_idx[3] == -1))
5265 break;
5266 schedule_timeout_uninterruptible(HZ);
5267 } while (time_after(wtime, jiffies));
5268 }
5269
5270 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
5271 struct list_head *list_st)
5272 {
5273 struct qla_ddb_index *st_ddb_idx;
5274 int max_ddbs;
5275 int fw_idx_size;
5276 struct dev_db_entry *fw_ddb_entry;
5277 dma_addr_t fw_ddb_dma;
5278 int ret;
5279 uint32_t idx = 0, next_idx = 0;
5280 uint32_t state = 0, conn_err = 0;
5281 uint16_t conn_id = 0;
5282
5283 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5284 &fw_ddb_dma);
5285 if (fw_ddb_entry == NULL) {
5286 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5287 goto exit_st_list;
5288 }
5289
5290 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5291 MAX_DEV_DB_ENTRIES;
5292 fw_idx_size = sizeof(struct qla_ddb_index);
5293
5294 for (idx = 0; idx < max_ddbs; idx = next_idx) {
5295 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5296 NULL, &next_idx, &state,
5297 &conn_err, NULL, &conn_id);
5298 if (ret == QLA_ERROR)
5299 break;
5300
5301 /* Ignore DDB if invalid state (unassigned) */
5302 if (state == DDB_DS_UNASSIGNED)
5303 goto continue_next_st;
5304
5305 /* Check if ST, add to the list_st */
5306 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
5307 goto continue_next_st;
5308
5309 st_ddb_idx = vzalloc(fw_idx_size);
5310 if (!st_ddb_idx)
5311 break;
5312
5313 st_ddb_idx->fw_ddb_idx = idx;
5314
5315 list_add_tail(&st_ddb_idx->list, list_st);
5316 continue_next_st:
5317 if (next_idx == 0)
5318 break;
5319 }
5320
5321 exit_st_list:
5322 if (fw_ddb_entry)
5323 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5324 }
5325
5326 /**
5327 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
5328 * @ha: pointer to adapter structure
5329 * @list_ddb: List from which failed ddb to be removed
5330 *
5331 * Iterate over the list of DDBs and find and remove DDBs that are either in
5332 * no connection active state or failed state
5333 **/
5334 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
5335 struct list_head *list_ddb)
5336 {
5337 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5338 uint32_t next_idx = 0;
5339 uint32_t state = 0, conn_err = 0;
5340 int ret;
5341
5342 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5343 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
5344 NULL, 0, NULL, &next_idx, &state,
5345 &conn_err, NULL, NULL);
5346 if (ret == QLA_ERROR)
5347 continue;
5348
5349 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5350 state == DDB_DS_SESSION_FAILED) {
5351 list_del_init(&ddb_idx->list);
5352 vfree(ddb_idx);
5353 }
5354 }
5355 }
5356
5357 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
5358 struct dev_db_entry *fw_ddb_entry,
5359 int is_reset, uint16_t idx)
5360 {
5361 struct iscsi_cls_session *cls_sess;
5362 struct iscsi_session *sess;
5363 struct iscsi_cls_conn *cls_conn;
5364 struct iscsi_endpoint *ep;
5365 uint16_t cmds_max = 32;
5366 uint16_t conn_id = 0;
5367 uint32_t initial_cmdsn = 0;
5368 int ret = QLA_SUCCESS;
5369
5370 struct ddb_entry *ddb_entry = NULL;
5371
5372 /* Create session object, with INVALID_ENTRY,
5373 * the targer_id would get set when we issue the login
5374 */
5375 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
5376 cmds_max, sizeof(struct ddb_entry),
5377 sizeof(struct ql4_task_data),
5378 initial_cmdsn, INVALID_ENTRY);
5379 if (!cls_sess) {
5380 ret = QLA_ERROR;
5381 goto exit_setup;
5382 }
5383
5384 /*
5385 * so calling module_put function to decrement the
5386 * reference count.
5387 **/
5388 module_put(qla4xxx_iscsi_transport.owner);
5389 sess = cls_sess->dd_data;
5390 ddb_entry = sess->dd_data;
5391 ddb_entry->sess = cls_sess;
5392
5393 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
5394 memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
5395 sizeof(struct dev_db_entry));
5396
5397 qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
5398
5399 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
5400
5401 if (!cls_conn) {
5402 ret = QLA_ERROR;
5403 goto exit_setup;
5404 }
5405
5406 ddb_entry->conn = cls_conn;
5407
5408 /* Setup ep, for displaying attributes in sysfs */
5409 ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
5410 if (ep) {
5411 ep->conn = cls_conn;
5412 cls_conn->ep = ep;
5413 } else {
5414 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
5415 ret = QLA_ERROR;
5416 goto exit_setup;
5417 }
5418
5419 /* Update sess/conn params */
5420 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
5421
5422 if (is_reset == RESET_ADAPTER) {
5423 iscsi_block_session(cls_sess);
5424 /* Use the relogin path to discover new devices
5425 * by short-circuting the logic of setting
5426 * timer to relogin - instead set the flags
5427 * to initiate login right away.
5428 */
5429 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
5430 set_bit(DF_RELOGIN, &ddb_entry->flags);
5431 }
5432
5433 exit_setup:
5434 return ret;
5435 }
5436
5437 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
5438 struct list_head *list_nt, int is_reset)
5439 {
5440 struct dev_db_entry *fw_ddb_entry;
5441 dma_addr_t fw_ddb_dma;
5442 int max_ddbs;
5443 int fw_idx_size;
5444 int ret;
5445 uint32_t idx = 0, next_idx = 0;
5446 uint32_t state = 0, conn_err = 0;
5447 uint16_t conn_id = 0;
5448 struct qla_ddb_index *nt_ddb_idx;
5449
5450 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5451 &fw_ddb_dma);
5452 if (fw_ddb_entry == NULL) {
5453 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5454 goto exit_nt_list;
5455 }
5456 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5457 MAX_DEV_DB_ENTRIES;
5458 fw_idx_size = sizeof(struct qla_ddb_index);
5459
5460 for (idx = 0; idx < max_ddbs; idx = next_idx) {
5461 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5462 NULL, &next_idx, &state,
5463 &conn_err, NULL, &conn_id);
5464 if (ret == QLA_ERROR)
5465 break;
5466
5467 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
5468 goto continue_next_nt;
5469
5470 /* Check if NT, then add to list it */
5471 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
5472 goto continue_next_nt;
5473
5474 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5475 state == DDB_DS_SESSION_FAILED))
5476 goto continue_next_nt;
5477
5478 DEBUG2(ql4_printk(KERN_INFO, ha,
5479 "Adding DDB to session = 0x%x\n", idx));
5480 if (is_reset == INIT_ADAPTER) {
5481 nt_ddb_idx = vmalloc(fw_idx_size);
5482 if (!nt_ddb_idx)
5483 break;
5484
5485 nt_ddb_idx->fw_ddb_idx = idx;
5486
5487 /* Copy original isid as it may get updated in function
5488 * qla4xxx_update_isid(). We need original isid in
5489 * function qla4xxx_compare_tuple_ddb to find duplicate
5490 * target */
5491 memcpy(&nt_ddb_idx->flash_isid[0],
5492 &fw_ddb_entry->isid[0],
5493 sizeof(nt_ddb_idx->flash_isid));
5494
5495 ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5496 fw_ddb_entry);
5497 if (ret == QLA_SUCCESS) {
5498 /* free nt_ddb_idx and do not add to list_nt */
5499 vfree(nt_ddb_idx);
5500 goto continue_next_nt;
5501 }
5502
5503 /* Copy updated isid */
5504 memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5505 sizeof(struct dev_db_entry));
5506
5507 list_add_tail(&nt_ddb_idx->list, list_nt);
5508 } else if (is_reset == RESET_ADAPTER) {
5509 if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5510 QLA_SUCCESS)
5511 goto continue_next_nt;
5512 }
5513
5514 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
5515 if (ret == QLA_ERROR)
5516 goto exit_nt_list;
5517
5518 continue_next_nt:
5519 if (next_idx == 0)
5520 break;
5521 }
5522
5523 exit_nt_list:
5524 if (fw_ddb_entry)
5525 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5526 }
5527
5528 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
5529 struct list_head *list_nt)
5530 {
5531 struct dev_db_entry *fw_ddb_entry;
5532 dma_addr_t fw_ddb_dma;
5533 int max_ddbs;
5534 int fw_idx_size;
5535 int ret;
5536 uint32_t idx = 0, next_idx = 0;
5537 uint32_t state = 0, conn_err = 0;
5538 uint16_t conn_id = 0;
5539 struct qla_ddb_index *nt_ddb_idx;
5540
5541 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5542 &fw_ddb_dma);
5543 if (fw_ddb_entry == NULL) {
5544 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5545 goto exit_new_nt_list;
5546 }
5547 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5548 MAX_DEV_DB_ENTRIES;
5549 fw_idx_size = sizeof(struct qla_ddb_index);
5550
5551 for (idx = 0; idx < max_ddbs; idx = next_idx) {
5552 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5553 NULL, &next_idx, &state,
5554 &conn_err, NULL, &conn_id);
5555 if (ret == QLA_ERROR)
5556 break;
5557
5558 /* Check if NT, then add it to list */
5559 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5560 goto continue_next_new_nt;
5561
5562 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
5563 goto continue_next_new_nt;
5564
5565 DEBUG2(ql4_printk(KERN_INFO, ha,
5566 "Adding DDB to session = 0x%x\n", idx));
5567
5568 nt_ddb_idx = vmalloc(fw_idx_size);
5569 if (!nt_ddb_idx)
5570 break;
5571
5572 nt_ddb_idx->fw_ddb_idx = idx;
5573
5574 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5575 if (ret == QLA_SUCCESS) {
5576 /* free nt_ddb_idx and do not add to list_nt */
5577 vfree(nt_ddb_idx);
5578 goto continue_next_new_nt;
5579 }
5580
5581 list_add_tail(&nt_ddb_idx->list, list_nt);
5582
5583 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5584 idx);
5585 if (ret == QLA_ERROR)
5586 goto exit_new_nt_list;
5587
5588 continue_next_new_nt:
5589 if (next_idx == 0)
5590 break;
5591 }
5592
5593 exit_new_nt_list:
5594 if (fw_ddb_entry)
5595 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5596 }
5597
5598 /**
5599 * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
5600 * @dev: dev associated with the sysfs entry
5601 * @data: pointer to flashnode session object
5602 *
5603 * Returns:
5604 * 1: if flashnode entry is non-persistent
5605 * 0: if flashnode entry is persistent
5606 **/
5607 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
5608 {
5609 struct iscsi_bus_flash_session *fnode_sess;
5610
5611 if (!iscsi_flashnode_bus_match(dev, NULL))
5612 return 0;
5613
5614 fnode_sess = iscsi_dev_to_flash_session(dev);
5615
5616 return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
5617 }
5618
5619 /**
5620 * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
5621 * @ha: pointer to host
5622 * @fw_ddb_entry: flash ddb data
5623 * @idx: target index
5624 * @user: if set then this call is made from userland else from kernel
5625 *
5626 * Returns:
5627 * On sucess: QLA_SUCCESS
5628 * On failure: QLA_ERROR
5629 *
5630 * This create separate sysfs entries for session and connection attributes of
5631 * the given fw ddb entry.
5632 * If this is invoked as a result of a userspace call then the entry is marked
5633 * as nonpersistent using flash_state field.
5634 **/
5635 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
5636 struct dev_db_entry *fw_ddb_entry,
5637 uint16_t *idx, int user)
5638 {
5639 struct iscsi_bus_flash_session *fnode_sess = NULL;
5640 struct iscsi_bus_flash_conn *fnode_conn = NULL;
5641 int rc = QLA_ERROR;
5642
5643 fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
5644 &qla4xxx_iscsi_transport, 0);
5645 if (!fnode_sess) {
5646 ql4_printk(KERN_ERR, ha,
5647 "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
5648 __func__, *idx, ha->host_no);
5649 goto exit_tgt_create;
5650 }
5651
5652 fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
5653 &qla4xxx_iscsi_transport, 0);
5654 if (!fnode_conn) {
5655 ql4_printk(KERN_ERR, ha,
5656 "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
5657 __func__, *idx, ha->host_no);
5658 goto free_sess;
5659 }
5660
5661 if (user) {
5662 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
5663 } else {
5664 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5665
5666 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
5667 fnode_sess->is_boot_target = 1;
5668 else
5669 fnode_sess->is_boot_target = 0;
5670 }
5671
5672 rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
5673 fw_ddb_entry);
5674
5675 ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5676 __func__, fnode_sess->dev.kobj.name);
5677
5678 ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5679 __func__, fnode_conn->dev.kobj.name);
5680
5681 return QLA_SUCCESS;
5682
5683 free_sess:
5684 iscsi_destroy_flashnode_sess(fnode_sess);
5685
5686 exit_tgt_create:
5687 return QLA_ERROR;
5688 }
5689
5690 /**
5691 * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
5692 * @shost: pointer to host
5693 * @buf: type of ddb entry (ipv4/ipv6)
5694 * @len: length of buf
5695 *
5696 * This creates new ddb entry in the flash by finding first free index and
5697 * storing default ddb there. And then create sysfs entry for the new ddb entry.
5698 **/
5699 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
5700 int len)
5701 {
5702 struct scsi_qla_host *ha = to_qla_host(shost);
5703 struct dev_db_entry *fw_ddb_entry = NULL;
5704 dma_addr_t fw_ddb_entry_dma;
5705 struct device *dev;
5706 uint16_t idx = 0;
5707 uint16_t max_ddbs = 0;
5708 uint32_t options = 0;
5709 uint32_t rval = QLA_ERROR;
5710
5711 if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
5712 strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
5713 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
5714 __func__));
5715 goto exit_ddb_add;
5716 }
5717
5718 max_ddbs = is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
5719 MAX_DEV_DB_ENTRIES;
5720
5721 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5722 &fw_ddb_entry_dma, GFP_KERNEL);
5723 if (!fw_ddb_entry) {
5724 DEBUG2(ql4_printk(KERN_ERR, ha,
5725 "%s: Unable to allocate dma buffer\n",
5726 __func__));
5727 goto exit_ddb_add;
5728 }
5729
5730 dev = iscsi_find_flashnode_sess(ha->host, NULL,
5731 qla4xxx_sysfs_ddb_is_non_persistent);
5732 if (dev) {
5733 ql4_printk(KERN_ERR, ha,
5734 "%s: A non-persistent entry %s found\n",
5735 __func__, dev->kobj.name);
5736 put_device(dev);
5737 goto exit_ddb_add;
5738 }
5739
5740 /* Index 0 and 1 are reserved for boot target entries */
5741 for (idx = 2; idx < max_ddbs; idx++) {
5742 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
5743 fw_ddb_entry_dma, idx))
5744 break;
5745 }
5746
5747 if (idx == max_ddbs)
5748 goto exit_ddb_add;
5749
5750 if (!strncasecmp("ipv6", buf, 4))
5751 options |= IPV6_DEFAULT_DDB_ENTRY;
5752
5753 rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5754 if (rval == QLA_ERROR)
5755 goto exit_ddb_add;
5756
5757 rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
5758
5759 exit_ddb_add:
5760 if (fw_ddb_entry)
5761 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5762 fw_ddb_entry, fw_ddb_entry_dma);
5763 if (rval == QLA_SUCCESS)
5764 return idx;
5765 else
5766 return -EIO;
5767 }
5768
5769 /**
5770 * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
5771 * @fnode_sess: pointer to session attrs of flash ddb entry
5772 * @fnode_conn: pointer to connection attrs of flash ddb entry
5773 *
5774 * This writes the contents of target ddb buffer to Flash with a valid cookie
5775 * value in order to make the ddb entry persistent.
5776 **/
5777 static int qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
5778 struct iscsi_bus_flash_conn *fnode_conn)
5779 {
5780 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5781 struct scsi_qla_host *ha = to_qla_host(shost);
5782 uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
5783 struct dev_db_entry *fw_ddb_entry = NULL;
5784 dma_addr_t fw_ddb_entry_dma;
5785 uint32_t options = 0;
5786 int rval = 0;
5787
5788 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5789 &fw_ddb_entry_dma, GFP_KERNEL);
5790 if (!fw_ddb_entry) {
5791 DEBUG2(ql4_printk(KERN_ERR, ha,
5792 "%s: Unable to allocate dma buffer\n",
5793 __func__));
5794 rval = -ENOMEM;
5795 goto exit_ddb_apply;
5796 }
5797
5798 if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5799 options |= IPV6_DEFAULT_DDB_ENTRY;
5800
5801 rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5802 if (rval == QLA_ERROR)
5803 goto exit_ddb_apply;
5804
5805 dev_db_start_offset += (fnode_sess->target_id *
5806 sizeof(*fw_ddb_entry));
5807
5808 qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5809 fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5810
5811 rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
5812 sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
5813
5814 if (rval == QLA_SUCCESS) {
5815 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5816 ql4_printk(KERN_INFO, ha,
5817 "%s: flash node %u of host %lu written to flash\n",
5818 __func__, fnode_sess->target_id, ha->host_no);
5819 } else {
5820 rval = -EIO;
5821 ql4_printk(KERN_ERR, ha,
5822 "%s: Error while writing flash node %u of host %lu to flash\n",
5823 __func__, fnode_sess->target_id, ha->host_no);
5824 }
5825
5826 exit_ddb_apply:
5827 if (fw_ddb_entry)
5828 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5829 fw_ddb_entry, fw_ddb_entry_dma);
5830 return rval;
5831 }
5832
5833 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
5834 struct dev_db_entry *fw_ddb_entry,
5835 uint16_t idx)
5836 {
5837 struct dev_db_entry *ddb_entry = NULL;
5838 dma_addr_t ddb_entry_dma;
5839 unsigned long wtime;
5840 uint32_t mbx_sts = 0;
5841 uint32_t state = 0, conn_err = 0;
5842 uint16_t tmo = 0;
5843 int ret = 0;
5844
5845 ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5846 &ddb_entry_dma, GFP_KERNEL);
5847 if (!ddb_entry) {
5848 DEBUG2(ql4_printk(KERN_ERR, ha,
5849 "%s: Unable to allocate dma buffer\n",
5850 __func__));
5851 return QLA_ERROR;
5852 }
5853
5854 memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
5855
5856 ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
5857 if (ret != QLA_SUCCESS) {
5858 DEBUG2(ql4_printk(KERN_ERR, ha,
5859 "%s: Unable to set ddb entry for index %d\n",
5860 __func__, idx));
5861 goto exit_ddb_conn_open;
5862 }
5863
5864 qla4xxx_conn_open(ha, idx);
5865
5866 /* To ensure that sendtargets is done, wait for at least 12 secs */
5867 tmo = ((ha->def_timeout > LOGIN_TOV) &&
5868 (ha->def_timeout < LOGIN_TOV * 10) ?
5869 ha->def_timeout : LOGIN_TOV);
5870
5871 DEBUG2(ql4_printk(KERN_INFO, ha,
5872 "Default time to wait for login to ddb %d\n", tmo));
5873
5874 wtime = jiffies + (HZ * tmo);
5875 do {
5876 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
5877 NULL, &state, &conn_err, NULL,
5878 NULL);
5879 if (ret == QLA_ERROR)
5880 continue;
5881
5882 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5883 state == DDB_DS_SESSION_FAILED)
5884 break;
5885
5886 schedule_timeout_uninterruptible(HZ / 10);
5887 } while (time_after(wtime, jiffies));
5888
5889 exit_ddb_conn_open:
5890 if (ddb_entry)
5891 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5892 ddb_entry, ddb_entry_dma);
5893 return ret;
5894 }
5895
5896 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
5897 struct dev_db_entry *fw_ddb_entry)
5898 {
5899 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5900 struct list_head list_nt;
5901 uint16_t ddb_index;
5902 int ret = 0;
5903
5904 if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
5905 ql4_printk(KERN_WARNING, ha,
5906 "%s: A discovery already in progress!\n", __func__);
5907 return QLA_ERROR;
5908 }
5909
5910 INIT_LIST_HEAD(&list_nt);
5911
5912 set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5913
5914 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
5915 if (ret == QLA_ERROR)
5916 goto exit_login_st_clr_bit;
5917
5918 ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
5919 if (ret == QLA_ERROR)
5920 goto exit_login_st;
5921
5922 qla4xxx_build_new_nt_list(ha, &list_nt);
5923
5924 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
5925 list_del_init(&ddb_idx->list);
5926 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
5927 vfree(ddb_idx);
5928 }
5929
5930 exit_login_st:
5931 if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
5932 ql4_printk(KERN_ERR, ha,
5933 "Unable to clear DDB index = 0x%x\n", ddb_index);
5934 }
5935
5936 clear_bit(ddb_index, ha->ddb_idx_map);
5937
5938 exit_login_st_clr_bit:
5939 clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5940 return ret;
5941 }
5942
5943 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
5944 struct dev_db_entry *fw_ddb_entry,
5945 uint16_t idx)
5946 {
5947 int ret = QLA_ERROR;
5948
5949 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5950 if (ret != QLA_SUCCESS)
5951 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5952 idx);
5953 else
5954 ret = -EPERM;
5955
5956 return ret;
5957 }
5958
5959 /**
5960 * qla4xxx_sysfs_ddb_login - Login to the specified target
5961 * @fnode_sess: pointer to session attrs of flash ddb entry
5962 * @fnode_conn: pointer to connection attrs of flash ddb entry
5963 *
5964 * This logs in to the specified target
5965 **/
5966 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
5967 struct iscsi_bus_flash_conn *fnode_conn)
5968 {
5969 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5970 struct scsi_qla_host *ha = to_qla_host(shost);
5971 struct dev_db_entry *fw_ddb_entry = NULL;
5972 dma_addr_t fw_ddb_entry_dma;
5973 uint32_t options = 0;
5974 int ret = 0;
5975
5976 if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
5977 ql4_printk(KERN_ERR, ha,
5978 "%s: Target info is not persistent\n", __func__);
5979 ret = -EIO;
5980 goto exit_ddb_login;
5981 }
5982
5983 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5984 &fw_ddb_entry_dma, GFP_KERNEL);
5985 if (!fw_ddb_entry) {
5986 DEBUG2(ql4_printk(KERN_ERR, ha,
5987 "%s: Unable to allocate dma buffer\n",
5988 __func__));
5989 ret = -ENOMEM;
5990 goto exit_ddb_login;
5991 }
5992
5993 if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5994 options |= IPV6_DEFAULT_DDB_ENTRY;
5995
5996 ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5997 if (ret == QLA_ERROR)
5998 goto exit_ddb_login;
5999
6000 qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
6001 fw_ddb_entry->cookie = DDB_VALID_COOKIE;
6002
6003 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
6004 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry);
6005 else
6006 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
6007 fnode_sess->target_id);
6008
6009 if (ret > 0)
6010 ret = -EIO;
6011
6012 exit_ddb_login:
6013 if (fw_ddb_entry)
6014 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6015 fw_ddb_entry, fw_ddb_entry_dma);
6016 return ret;
6017 }
6018
6019 /**
6020 * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
6021 * @cls_sess: pointer to session to be logged out
6022 *
6023 * This performs session log out from the specified target
6024 **/
6025 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
6026 {
6027 struct iscsi_session *sess;
6028 struct ddb_entry *ddb_entry = NULL;
6029 struct scsi_qla_host *ha;
6030 struct dev_db_entry *fw_ddb_entry = NULL;
6031 dma_addr_t fw_ddb_entry_dma;
6032 unsigned long flags;
6033 unsigned long wtime;
6034 uint32_t ddb_state;
6035 int options;
6036 int ret = 0;
6037
6038 sess = cls_sess->dd_data;
6039 ddb_entry = sess->dd_data;
6040 ha = ddb_entry->ha;
6041
6042 if (ddb_entry->ddb_type != FLASH_DDB) {
6043 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
6044 __func__);
6045 ret = -ENXIO;
6046 goto exit_ddb_logout;
6047 }
6048
6049 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6050 ql4_printk(KERN_ERR, ha,
6051 "%s: Logout from boot target entry is not permitted.\n",
6052 __func__);
6053 ret = -EPERM;
6054 goto exit_ddb_logout;
6055 }
6056
6057 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6058 &fw_ddb_entry_dma, GFP_KERNEL);
6059 if (!fw_ddb_entry) {
6060 ql4_printk(KERN_ERR, ha,
6061 "%s: Unable to allocate dma buffer\n", __func__);
6062 ret = -ENOMEM;
6063 goto exit_ddb_logout;
6064 }
6065
6066 if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
6067 goto ddb_logout_init;
6068
6069 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
6070 fw_ddb_entry, fw_ddb_entry_dma,
6071 NULL, NULL, &ddb_state, NULL,
6072 NULL, NULL);
6073 if (ret == QLA_ERROR)
6074 goto ddb_logout_init;
6075
6076 if (ddb_state == DDB_DS_SESSION_ACTIVE)
6077 goto ddb_logout_init;
6078
6079 /* wait until next relogin is triggered using DF_RELOGIN and
6080 * clear DF_RELOGIN to avoid invocation of further relogin
6081 */
6082 wtime = jiffies + (HZ * RELOGIN_TOV);
6083 do {
6084 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
6085 goto ddb_logout_init;
6086
6087 schedule_timeout_uninterruptible(HZ);
6088 } while ((time_after(wtime, jiffies)));
6089
6090 ddb_logout_init:
6091 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6092 atomic_set(&ddb_entry->relogin_timer, 0);
6093
6094 options = LOGOUT_OPTION_CLOSE_SESSION;
6095 qla4xxx_session_logout_ddb(ha, ddb_entry, options);
6096
6097 memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
6098 wtime = jiffies + (HZ * LOGOUT_TOV);
6099 do {
6100 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
6101 fw_ddb_entry, fw_ddb_entry_dma,
6102 NULL, NULL, &ddb_state, NULL,
6103 NULL, NULL);
6104 if (ret == QLA_ERROR)
6105 goto ddb_logout_clr_sess;
6106
6107 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
6108 (ddb_state == DDB_DS_SESSION_FAILED))
6109 goto ddb_logout_clr_sess;
6110
6111 schedule_timeout_uninterruptible(HZ);
6112 } while ((time_after(wtime, jiffies)));
6113
6114 ddb_logout_clr_sess:
6115 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
6116 /*
6117 * we have decremented the reference count of the driver
6118 * when we setup the session to have the driver unload
6119 * to be seamless without actually destroying the
6120 * session
6121 **/
6122 try_module_get(qla4xxx_iscsi_transport.owner);
6123 iscsi_destroy_endpoint(ddb_entry->conn->ep);
6124
6125 spin_lock_irqsave(&ha->hardware_lock, flags);
6126 qla4xxx_free_ddb(ha, ddb_entry);
6127 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
6128 spin_unlock_irqrestore(&ha->hardware_lock, flags);
6129
6130 iscsi_session_teardown(ddb_entry->sess);
6131
6132 clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
6133 ret = QLA_SUCCESS;
6134
6135 exit_ddb_logout:
6136 if (fw_ddb_entry)
6137 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6138 fw_ddb_entry, fw_ddb_entry_dma);
6139 return ret;
6140 }
6141
6142 /**
6143 * qla4xxx_sysfs_ddb_logout - Logout from the specified target
6144 * @fnode_sess: pointer to session attrs of flash ddb entry
6145 * @fnode_conn: pointer to connection attrs of flash ddb entry
6146 *
6147 * This performs log out from the specified target
6148 **/
6149 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
6150 struct iscsi_bus_flash_conn *fnode_conn)
6151 {
6152 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6153 struct scsi_qla_host *ha = to_qla_host(shost);
6154 struct ql4_tuple_ddb *flash_tddb = NULL;
6155 struct ql4_tuple_ddb *tmp_tddb = NULL;
6156 struct dev_db_entry *fw_ddb_entry = NULL;
6157 struct ddb_entry *ddb_entry = NULL;
6158 dma_addr_t fw_ddb_dma;
6159 uint32_t next_idx = 0;
6160 uint32_t state = 0, conn_err = 0;
6161 uint16_t conn_id = 0;
6162 int idx, index;
6163 int status, ret = 0;
6164
6165 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6166 &fw_ddb_dma);
6167 if (fw_ddb_entry == NULL) {
6168 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
6169 ret = -ENOMEM;
6170 goto exit_ddb_logout;
6171 }
6172
6173 flash_tddb = vzalloc(sizeof(*flash_tddb));
6174 if (!flash_tddb) {
6175 ql4_printk(KERN_WARNING, ha,
6176 "%s:Memory Allocation failed.\n", __func__);
6177 ret = -ENOMEM;
6178 goto exit_ddb_logout;
6179 }
6180
6181 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6182 if (!tmp_tddb) {
6183 ql4_printk(KERN_WARNING, ha,
6184 "%s:Memory Allocation failed.\n", __func__);
6185 ret = -ENOMEM;
6186 goto exit_ddb_logout;
6187 }
6188
6189 if (!fnode_sess->targetname) {
6190 ql4_printk(KERN_ERR, ha,
6191 "%s:Cannot logout from SendTarget entry\n",
6192 __func__);
6193 ret = -EPERM;
6194 goto exit_ddb_logout;
6195 }
6196
6197 if (fnode_sess->is_boot_target) {
6198 ql4_printk(KERN_ERR, ha,
6199 "%s: Logout from boot target entry is not permitted.\n",
6200 __func__);
6201 ret = -EPERM;
6202 goto exit_ddb_logout;
6203 }
6204
6205 strncpy(flash_tddb->iscsi_name, fnode_sess->targetname,
6206 ISCSI_NAME_SIZE);
6207
6208 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6209 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
6210 else
6211 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
6212
6213 flash_tddb->tpgt = fnode_sess->tpgt;
6214 flash_tddb->port = fnode_conn->port;
6215
6216 COPY_ISID(flash_tddb->isid, fnode_sess->isid);
6217
6218 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6219 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6220 if (ddb_entry == NULL)
6221 continue;
6222
6223 if (ddb_entry->ddb_type != FLASH_DDB)
6224 continue;
6225
6226 index = ddb_entry->sess->target_id;
6227 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
6228 fw_ddb_dma, NULL, &next_idx,
6229 &state, &conn_err, NULL,
6230 &conn_id);
6231 if (status == QLA_ERROR) {
6232 ret = -ENOMEM;
6233 break;
6234 }
6235
6236 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
6237
6238 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
6239 true);
6240 if (status == QLA_SUCCESS) {
6241 ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
6242 break;
6243 }
6244 }
6245
6246 if (idx == MAX_DDB_ENTRIES)
6247 ret = -ESRCH;
6248
6249 exit_ddb_logout:
6250 if (flash_tddb)
6251 vfree(flash_tddb);
6252 if (tmp_tddb)
6253 vfree(tmp_tddb);
6254 if (fw_ddb_entry)
6255 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6256
6257 return ret;
6258 }
6259
6260 static int
6261 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
6262 int param, char *buf)
6263 {
6264 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6265 struct scsi_qla_host *ha = to_qla_host(shost);
6266 struct iscsi_bus_flash_conn *fnode_conn;
6267 struct ql4_chap_table chap_tbl;
6268 struct device *dev;
6269 int parent_type;
6270 int rc = 0;
6271
6272 dev = iscsi_find_flashnode_conn(fnode_sess);
6273 if (!dev)
6274 return -EIO;
6275
6276 fnode_conn = iscsi_dev_to_flash_conn(dev);
6277
6278 switch (param) {
6279 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6280 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
6281 break;
6282 case ISCSI_FLASHNODE_PORTAL_TYPE:
6283 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
6284 break;
6285 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6286 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
6287 break;
6288 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6289 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
6290 break;
6291 case ISCSI_FLASHNODE_ENTRY_EN:
6292 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
6293 break;
6294 case ISCSI_FLASHNODE_HDR_DGST_EN:
6295 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
6296 break;
6297 case ISCSI_FLASHNODE_DATA_DGST_EN:
6298 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
6299 break;
6300 case ISCSI_FLASHNODE_IMM_DATA_EN:
6301 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
6302 break;
6303 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6304 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
6305 break;
6306 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6307 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
6308 break;
6309 case ISCSI_FLASHNODE_PDU_INORDER:
6310 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
6311 break;
6312 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6313 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
6314 break;
6315 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6316 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
6317 break;
6318 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6319 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
6320 break;
6321 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6322 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
6323 break;
6324 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6325 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
6326 break;
6327 case ISCSI_FLASHNODE_ERL:
6328 rc = sprintf(buf, "%u\n", fnode_sess->erl);
6329 break;
6330 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6331 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
6332 break;
6333 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6334 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
6335 break;
6336 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6337 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
6338 break;
6339 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6340 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
6341 break;
6342 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6343 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
6344 break;
6345 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6346 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
6347 break;
6348 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6349 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
6350 break;
6351 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6352 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
6353 break;
6354 case ISCSI_FLASHNODE_FIRST_BURST:
6355 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
6356 break;
6357 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6358 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
6359 break;
6360 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6361 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
6362 break;
6363 case ISCSI_FLASHNODE_MAX_R2T:
6364 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
6365 break;
6366 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6367 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
6368 break;
6369 case ISCSI_FLASHNODE_ISID:
6370 rc = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
6371 fnode_sess->isid[0], fnode_sess->isid[1],
6372 fnode_sess->isid[2], fnode_sess->isid[3],
6373 fnode_sess->isid[4], fnode_sess->isid[5]);
6374 break;
6375 case ISCSI_FLASHNODE_TSID:
6376 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
6377 break;
6378 case ISCSI_FLASHNODE_PORT:
6379 rc = sprintf(buf, "%d\n", fnode_conn->port);
6380 break;
6381 case ISCSI_FLASHNODE_MAX_BURST:
6382 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
6383 break;
6384 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6385 rc = sprintf(buf, "%u\n",
6386 fnode_sess->default_taskmgmt_timeout);
6387 break;
6388 case ISCSI_FLASHNODE_IPADDR:
6389 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6390 rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
6391 else
6392 rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
6393 break;
6394 case ISCSI_FLASHNODE_ALIAS:
6395 if (fnode_sess->targetalias)
6396 rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
6397 else
6398 rc = sprintf(buf, "\n");
6399 break;
6400 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6401 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6402 rc = sprintf(buf, "%pI6\n",
6403 fnode_conn->redirect_ipaddr);
6404 else
6405 rc = sprintf(buf, "%pI4\n",
6406 fnode_conn->redirect_ipaddr);
6407 break;
6408 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6409 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
6410 break;
6411 case ISCSI_FLASHNODE_LOCAL_PORT:
6412 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
6413 break;
6414 case ISCSI_FLASHNODE_IPV4_TOS:
6415 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
6416 break;
6417 case ISCSI_FLASHNODE_IPV6_TC:
6418 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6419 rc = sprintf(buf, "%u\n",
6420 fnode_conn->ipv6_traffic_class);
6421 else
6422 rc = sprintf(buf, "\n");
6423 break;
6424 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6425 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
6426 break;
6427 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6428 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6429 rc = sprintf(buf, "%pI6\n",
6430 fnode_conn->link_local_ipv6_addr);
6431 else
6432 rc = sprintf(buf, "\n");
6433 break;
6434 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6435 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
6436 break;
6437 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6438 if (fnode_sess->discovery_parent_type == DDB_ISNS)
6439 parent_type = ISCSI_DISC_PARENT_ISNS;
6440 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
6441 parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6442 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
6443 parent_type = ISCSI_DISC_PARENT_SENDTGT;
6444 else
6445 parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6446
6447 rc = sprintf(buf, "%s\n",
6448 iscsi_get_discovery_parent_name(parent_type));
6449 break;
6450 case ISCSI_FLASHNODE_NAME:
6451 if (fnode_sess->targetname)
6452 rc = sprintf(buf, "%s\n", fnode_sess->targetname);
6453 else
6454 rc = sprintf(buf, "\n");
6455 break;
6456 case ISCSI_FLASHNODE_TPGT:
6457 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
6458 break;
6459 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6460 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
6461 break;
6462 case ISCSI_FLASHNODE_TCP_RECV_WSF:
6463 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
6464 break;
6465 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
6466 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
6467 break;
6468 case ISCSI_FLASHNODE_USERNAME:
6469 if (fnode_sess->chap_auth_en) {
6470 qla4xxx_get_uni_chap_at_index(ha,
6471 chap_tbl.name,
6472 chap_tbl.secret,
6473 fnode_sess->chap_out_idx);
6474 rc = sprintf(buf, "%s\n", chap_tbl.name);
6475 } else {
6476 rc = sprintf(buf, "\n");
6477 }
6478 break;
6479 case ISCSI_FLASHNODE_PASSWORD:
6480 if (fnode_sess->chap_auth_en) {
6481 qla4xxx_get_uni_chap_at_index(ha,
6482 chap_tbl.name,
6483 chap_tbl.secret,
6484 fnode_sess->chap_out_idx);
6485 rc = sprintf(buf, "%s\n", chap_tbl.secret);
6486 } else {
6487 rc = sprintf(buf, "\n");
6488 }
6489 break;
6490 case ISCSI_FLASHNODE_STATSN:
6491 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
6492 break;
6493 case ISCSI_FLASHNODE_EXP_STATSN:
6494 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
6495 break;
6496 case ISCSI_FLASHNODE_IS_BOOT_TGT:
6497 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
6498 break;
6499 default:
6500 rc = -ENOSYS;
6501 break;
6502 }
6503
6504 put_device(dev);
6505 return rc;
6506 }
6507
6508 /**
6509 * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
6510 * @fnode_sess: pointer to session attrs of flash ddb entry
6511 * @fnode_conn: pointer to connection attrs of flash ddb entry
6512 * @data: Parameters and their values to update
6513 * @len: len of data
6514 *
6515 * This sets the parameter of flash ddb entry and writes them to flash
6516 **/
6517 static int
6518 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
6519 struct iscsi_bus_flash_conn *fnode_conn,
6520 void *data, int len)
6521 {
6522 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6523 struct scsi_qla_host *ha = to_qla_host(shost);
6524 struct iscsi_flashnode_param_info *fnode_param;
6525 struct nlattr *attr;
6526 int rc = QLA_ERROR;
6527 uint32_t rem = len;
6528
6529 nla_for_each_attr(attr, data, len, rem) {
6530 fnode_param = nla_data(attr);
6531
6532 switch (fnode_param->param) {
6533 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6534 fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
6535 break;
6536 case ISCSI_FLASHNODE_PORTAL_TYPE:
6537 memcpy(fnode_sess->portal_type, fnode_param->value,
6538 strlen(fnode_sess->portal_type));
6539 break;
6540 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6541 fnode_sess->auto_snd_tgt_disable =
6542 fnode_param->value[0];
6543 break;
6544 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6545 fnode_sess->discovery_sess = fnode_param->value[0];
6546 break;
6547 case ISCSI_FLASHNODE_ENTRY_EN:
6548 fnode_sess->entry_state = fnode_param->value[0];
6549 break;
6550 case ISCSI_FLASHNODE_HDR_DGST_EN:
6551 fnode_conn->hdrdgst_en = fnode_param->value[0];
6552 break;
6553 case ISCSI_FLASHNODE_DATA_DGST_EN:
6554 fnode_conn->datadgst_en = fnode_param->value[0];
6555 break;
6556 case ISCSI_FLASHNODE_IMM_DATA_EN:
6557 fnode_sess->imm_data_en = fnode_param->value[0];
6558 break;
6559 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6560 fnode_sess->initial_r2t_en = fnode_param->value[0];
6561 break;
6562 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6563 fnode_sess->dataseq_inorder_en = fnode_param->value[0];
6564 break;
6565 case ISCSI_FLASHNODE_PDU_INORDER:
6566 fnode_sess->pdu_inorder_en = fnode_param->value[0];
6567 break;
6568 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6569 fnode_sess->chap_auth_en = fnode_param->value[0];
6570 break;
6571 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6572 fnode_conn->snack_req_en = fnode_param->value[0];
6573 break;
6574 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6575 fnode_sess->discovery_logout_en = fnode_param->value[0];
6576 break;
6577 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6578 fnode_sess->bidi_chap_en = fnode_param->value[0];
6579 break;
6580 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6581 fnode_sess->discovery_auth_optional =
6582 fnode_param->value[0];
6583 break;
6584 case ISCSI_FLASHNODE_ERL:
6585 fnode_sess->erl = fnode_param->value[0];
6586 break;
6587 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6588 fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
6589 break;
6590 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6591 fnode_conn->tcp_nagle_disable = fnode_param->value[0];
6592 break;
6593 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6594 fnode_conn->tcp_wsf_disable = fnode_param->value[0];
6595 break;
6596 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6597 fnode_conn->tcp_timer_scale = fnode_param->value[0];
6598 break;
6599 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6600 fnode_conn->tcp_timestamp_en = fnode_param->value[0];
6601 break;
6602 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6603 fnode_conn->fragment_disable = fnode_param->value[0];
6604 break;
6605 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6606 fnode_conn->max_recv_dlength =
6607 *(unsigned *)fnode_param->value;
6608 break;
6609 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6610 fnode_conn->max_xmit_dlength =
6611 *(unsigned *)fnode_param->value;
6612 break;
6613 case ISCSI_FLASHNODE_FIRST_BURST:
6614 fnode_sess->first_burst =
6615 *(unsigned *)fnode_param->value;
6616 break;
6617 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6618 fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
6619 break;
6620 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6621 fnode_sess->time2retain =
6622 *(uint16_t *)fnode_param->value;
6623 break;
6624 case ISCSI_FLASHNODE_MAX_R2T:
6625 fnode_sess->max_r2t =
6626 *(uint16_t *)fnode_param->value;
6627 break;
6628 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6629 fnode_conn->keepalive_timeout =
6630 *(uint16_t *)fnode_param->value;
6631 break;
6632 case ISCSI_FLASHNODE_ISID:
6633 memcpy(fnode_sess->isid, fnode_param->value,
6634 sizeof(fnode_sess->isid));
6635 break;
6636 case ISCSI_FLASHNODE_TSID:
6637 fnode_sess->tsid = *(uint16_t *)fnode_param->value;
6638 break;
6639 case ISCSI_FLASHNODE_PORT:
6640 fnode_conn->port = *(uint16_t *)fnode_param->value;
6641 break;
6642 case ISCSI_FLASHNODE_MAX_BURST:
6643 fnode_sess->max_burst = *(unsigned *)fnode_param->value;
6644 break;
6645 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6646 fnode_sess->default_taskmgmt_timeout =
6647 *(uint16_t *)fnode_param->value;
6648 break;
6649 case ISCSI_FLASHNODE_IPADDR:
6650 memcpy(fnode_conn->ipaddress, fnode_param->value,
6651 IPv6_ADDR_LEN);
6652 break;
6653 case ISCSI_FLASHNODE_ALIAS:
6654 rc = iscsi_switch_str_param(&fnode_sess->targetalias,
6655 (char *)fnode_param->value);
6656 break;
6657 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6658 memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
6659 IPv6_ADDR_LEN);
6660 break;
6661 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6662 fnode_conn->max_segment_size =
6663 *(unsigned *)fnode_param->value;
6664 break;
6665 case ISCSI_FLASHNODE_LOCAL_PORT:
6666 fnode_conn->local_port =
6667 *(uint16_t *)fnode_param->value;
6668 break;
6669 case ISCSI_FLASHNODE_IPV4_TOS:
6670 fnode_conn->ipv4_tos = fnode_param->value[0];
6671 break;
6672 case ISCSI_FLASHNODE_IPV6_TC:
6673 fnode_conn->ipv6_traffic_class = fnode_param->value[0];
6674 break;
6675 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6676 fnode_conn->ipv6_flow_label = fnode_param->value[0];
6677 break;
6678 case ISCSI_FLASHNODE_NAME:
6679 rc = iscsi_switch_str_param(&fnode_sess->targetname,
6680 (char *)fnode_param->value);
6681 break;
6682 case ISCSI_FLASHNODE_TPGT:
6683 fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
6684 break;
6685 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6686 memcpy(fnode_conn->link_local_ipv6_addr,
6687 fnode_param->value, IPv6_ADDR_LEN);
6688 break;
6689 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6690 fnode_sess->discovery_parent_idx =
6691 *(uint16_t *)fnode_param->value;
6692 break;
6693 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6694 fnode_conn->tcp_xmit_wsf =
6695 *(uint8_t *)fnode_param->value;
6696 break;
6697 case ISCSI_FLASHNODE_TCP_RECV_WSF:
6698 fnode_conn->tcp_recv_wsf =
6699 *(uint8_t *)fnode_param->value;
6700 break;
6701 case ISCSI_FLASHNODE_STATSN:
6702 fnode_conn->statsn = *(uint32_t *)fnode_param->value;
6703 break;
6704 case ISCSI_FLASHNODE_EXP_STATSN:
6705 fnode_conn->exp_statsn =
6706 *(uint32_t *)fnode_param->value;
6707 break;
6708 default:
6709 ql4_printk(KERN_ERR, ha,
6710 "%s: No such sysfs attribute\n", __func__);
6711 rc = -ENOSYS;
6712 goto exit_set_param;
6713 }
6714 }
6715
6716 rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
6717
6718 exit_set_param:
6719 return rc;
6720 }
6721
6722 /**
6723 * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
6724 * @fnode_sess: pointer to session attrs of flash ddb entry
6725 *
6726 * This invalidates the flash ddb entry at the given index
6727 **/
6728 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
6729 {
6730 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6731 struct scsi_qla_host *ha = to_qla_host(shost);
6732 uint32_t dev_db_start_offset;
6733 uint32_t dev_db_end_offset;
6734 struct dev_db_entry *fw_ddb_entry = NULL;
6735 dma_addr_t fw_ddb_entry_dma;
6736 uint16_t *ddb_cookie = NULL;
6737 size_t ddb_size = 0;
6738 void *pddb = NULL;
6739 int target_id;
6740 int rc = 0;
6741
6742 if (fnode_sess->is_boot_target) {
6743 rc = -EPERM;
6744 DEBUG2(ql4_printk(KERN_ERR, ha,
6745 "%s: Deletion of boot target entry is not permitted.\n",
6746 __func__));
6747 goto exit_ddb_del;
6748 }
6749
6750 if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
6751 goto sysfs_ddb_del;
6752
6753 if (is_qla40XX(ha)) {
6754 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
6755 dev_db_end_offset = FLASH_OFFSET_DB_END;
6756 dev_db_start_offset += (fnode_sess->target_id *
6757 sizeof(*fw_ddb_entry));
6758 ddb_size = sizeof(*fw_ddb_entry);
6759 } else {
6760 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
6761 (ha->hw.flt_region_ddb << 2);
6762 /* flt_ddb_size is DDB table size for both ports
6763 * so divide it by 2 to calculate the offset for second port
6764 */
6765 if (ha->port_num == 1)
6766 dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
6767
6768 dev_db_end_offset = dev_db_start_offset +
6769 (ha->hw.flt_ddb_size / 2);
6770
6771 dev_db_start_offset += (fnode_sess->target_id *
6772 sizeof(*fw_ddb_entry));
6773 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
6774
6775 ddb_size = sizeof(*ddb_cookie);
6776 }
6777
6778 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
6779 __func__, dev_db_start_offset, dev_db_end_offset));
6780
6781 if (dev_db_start_offset > dev_db_end_offset) {
6782 rc = -EIO;
6783 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
6784 __func__, fnode_sess->target_id));
6785 goto exit_ddb_del;
6786 }
6787
6788 pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
6789 &fw_ddb_entry_dma, GFP_KERNEL);
6790 if (!pddb) {
6791 rc = -ENOMEM;
6792 DEBUG2(ql4_printk(KERN_ERR, ha,
6793 "%s: Unable to allocate dma buffer\n",
6794 __func__));
6795 goto exit_ddb_del;
6796 }
6797
6798 if (is_qla40XX(ha)) {
6799 fw_ddb_entry = pddb;
6800 memset(fw_ddb_entry, 0, ddb_size);
6801 ddb_cookie = &fw_ddb_entry->cookie;
6802 } else {
6803 ddb_cookie = pddb;
6804 }
6805
6806 /* invalidate the cookie */
6807 *ddb_cookie = 0xFFEE;
6808 qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
6809 ddb_size, FLASH_OPT_RMW_COMMIT);
6810
6811 sysfs_ddb_del:
6812 target_id = fnode_sess->target_id;
6813 iscsi_destroy_flashnode_sess(fnode_sess);
6814 ql4_printk(KERN_INFO, ha,
6815 "%s: session and conn entries for flashnode %u of host %lu deleted\n",
6816 __func__, target_id, ha->host_no);
6817 exit_ddb_del:
6818 if (pddb)
6819 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
6820 fw_ddb_entry_dma);
6821 return rc;
6822 }
6823
6824 /**
6825 * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
6826 * @ha: pointer to adapter structure
6827 *
6828 * Export the firmware DDB for all send targets and normal targets to sysfs.
6829 **/
6830 static int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
6831 {
6832 struct dev_db_entry *fw_ddb_entry = NULL;
6833 dma_addr_t fw_ddb_entry_dma;
6834 uint16_t max_ddbs;
6835 uint16_t idx = 0;
6836 int ret = QLA_SUCCESS;
6837
6838 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
6839 sizeof(*fw_ddb_entry),
6840 &fw_ddb_entry_dma, GFP_KERNEL);
6841 if (!fw_ddb_entry) {
6842 DEBUG2(ql4_printk(KERN_ERR, ha,
6843 "%s: Unable to allocate dma buffer\n",
6844 __func__));
6845 return -ENOMEM;
6846 }
6847
6848 max_ddbs = is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
6849 MAX_DEV_DB_ENTRIES;
6850
6851 for (idx = 0; idx < max_ddbs; idx++) {
6852 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
6853 idx))
6854 continue;
6855
6856 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
6857 if (ret) {
6858 ret = -EIO;
6859 break;
6860 }
6861 }
6862
6863 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
6864 fw_ddb_entry_dma);
6865
6866 return ret;
6867 }
6868
6869 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
6870 {
6871 iscsi_destroy_all_flashnode(ha->host);
6872 }
6873
6874 /**
6875 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
6876 * @ha: pointer to adapter structure
6877 * @is_reset: Is this init path or reset path
6878 *
6879 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
6880 * using connection open, then create the list of normal targets (nt)
6881 * from firmware DDBs. Based on the list of nt setup session and connection
6882 * objects.
6883 **/
6884 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
6885 {
6886 uint16_t tmo = 0;
6887 struct list_head list_st, list_nt;
6888 struct qla_ddb_index *st_ddb_idx, *st_ddb_idx_tmp;
6889 unsigned long wtime;
6890
6891 if (!test_bit(AF_LINK_UP, &ha->flags)) {
6892 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
6893 ha->is_reset = is_reset;
6894 return;
6895 }
6896
6897 INIT_LIST_HEAD(&list_st);
6898 INIT_LIST_HEAD(&list_nt);
6899
6900 qla4xxx_build_st_list(ha, &list_st);
6901
6902 /* Before issuing conn open mbox, ensure all IPs states are configured
6903 * Note, conn open fails if IPs are not configured
6904 */
6905 qla4xxx_wait_for_ip_configuration(ha);
6906
6907 /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
6908 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
6909 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
6910 }
6911
6912 /* Wait to ensure all sendtargets are done for min 12 sec wait */
6913 tmo = ((ha->def_timeout > LOGIN_TOV) &&
6914 (ha->def_timeout < LOGIN_TOV * 10) ?
6915 ha->def_timeout : LOGIN_TOV);
6916
6917 DEBUG2(ql4_printk(KERN_INFO, ha,
6918 "Default time to wait for build ddb %d\n", tmo));
6919
6920 wtime = jiffies + (HZ * tmo);
6921 do {
6922 if (list_empty(&list_st))
6923 break;
6924
6925 qla4xxx_remove_failed_ddb(ha, &list_st);
6926 schedule_timeout_uninterruptible(HZ / 10);
6927 } while (time_after(wtime, jiffies));
6928
6929 /* Free up the sendtargets list */
6930 qla4xxx_free_ddb_list(&list_st);
6931
6932 qla4xxx_build_nt_list(ha, &list_nt, is_reset);
6933
6934 qla4xxx_free_ddb_list(&list_nt);
6935
6936 qla4xxx_free_ddb_index(ha);
6937 }
6938
6939 /**
6940 * qla4xxx_wait_login_resp_boot_tgt - Wait for iSCSI boot target login
6941 * response.
6942 * @ha: pointer to adapter structure
6943 *
6944 * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
6945 * set in DDB and we will wait for login response of boot targets during
6946 * probe.
6947 **/
6948 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
6949 {
6950 struct ddb_entry *ddb_entry;
6951 struct dev_db_entry *fw_ddb_entry = NULL;
6952 dma_addr_t fw_ddb_entry_dma;
6953 unsigned long wtime;
6954 uint32_t ddb_state;
6955 int max_ddbs, idx, ret;
6956
6957 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6958 MAX_DEV_DB_ENTRIES;
6959
6960 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6961 &fw_ddb_entry_dma, GFP_KERNEL);
6962 if (!fw_ddb_entry) {
6963 ql4_printk(KERN_ERR, ha,
6964 "%s: Unable to allocate dma buffer\n", __func__);
6965 goto exit_login_resp;
6966 }
6967
6968 wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
6969
6970 for (idx = 0; idx < max_ddbs; idx++) {
6971 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6972 if (ddb_entry == NULL)
6973 continue;
6974
6975 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6976 DEBUG2(ql4_printk(KERN_INFO, ha,
6977 "%s: DDB index [%d]\n", __func__,
6978 ddb_entry->fw_ddb_index));
6979 do {
6980 ret = qla4xxx_get_fwddb_entry(ha,
6981 ddb_entry->fw_ddb_index,
6982 fw_ddb_entry, fw_ddb_entry_dma,
6983 NULL, NULL, &ddb_state, NULL,
6984 NULL, NULL);
6985 if (ret == QLA_ERROR)
6986 goto exit_login_resp;
6987
6988 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
6989 (ddb_state == DDB_DS_SESSION_FAILED))
6990 break;
6991
6992 schedule_timeout_uninterruptible(HZ);
6993
6994 } while ((time_after(wtime, jiffies)));
6995
6996 if (!time_after(wtime, jiffies)) {
6997 DEBUG2(ql4_printk(KERN_INFO, ha,
6998 "%s: Login response wait timer expired\n",
6999 __func__));
7000 goto exit_login_resp;
7001 }
7002 }
7003 }
7004
7005 exit_login_resp:
7006 if (fw_ddb_entry)
7007 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7008 fw_ddb_entry, fw_ddb_entry_dma);
7009 }
7010
7011 /**
7012 * qla4xxx_probe_adapter - callback function to probe HBA
7013 * @pdev: pointer to pci_dev structure
7014 * @pci_device_id: pointer to pci_device entry
7015 *
7016 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
7017 * It returns zero if successful. It also initializes all data necessary for
7018 * the driver.
7019 **/
7020 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
7021 const struct pci_device_id *ent)
7022 {
7023 int ret = -ENODEV, status;
7024 struct Scsi_Host *host;
7025 struct scsi_qla_host *ha;
7026 uint8_t init_retry_count = 0;
7027 char buf[34];
7028 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
7029 uint32_t dev_state;
7030
7031 if (pci_enable_device(pdev))
7032 return -1;
7033
7034 host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
7035 if (host == NULL) {
7036 printk(KERN_WARNING
7037 "qla4xxx: Couldn't allocate host from scsi layer!\n");
7038 goto probe_disable_device;
7039 }
7040
7041 /* Clear our data area */
7042 ha = to_qla_host(host);
7043 memset(ha, 0, sizeof(*ha));
7044
7045 /* Save the information from PCI BIOS. */
7046 ha->pdev = pdev;
7047 ha->host = host;
7048 ha->host_no = host->host_no;
7049 ha->func_num = PCI_FUNC(ha->pdev->devfn);
7050
7051 pci_enable_pcie_error_reporting(pdev);
7052
7053 /* Setup Runtime configurable options */
7054 if (is_qla8022(ha)) {
7055 ha->isp_ops = &qla4_82xx_isp_ops;
7056 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
7057 ha->qdr_sn_window = -1;
7058 ha->ddr_mn_window = -1;
7059 ha->curr_window = 255;
7060 nx_legacy_intr = &legacy_intr[ha->func_num];
7061 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
7062 ha->nx_legacy_intr.tgt_status_reg =
7063 nx_legacy_intr->tgt_status_reg;
7064 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
7065 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
7066 } else if (is_qla8032(ha) || is_qla8042(ha)) {
7067 ha->isp_ops = &qla4_83xx_isp_ops;
7068 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
7069 } else {
7070 ha->isp_ops = &qla4xxx_isp_ops;
7071 }
7072
7073 if (is_qla80XX(ha)) {
7074 rwlock_init(&ha->hw_lock);
7075 ha->pf_bit = ha->func_num << 16;
7076 /* Set EEH reset type to fundamental if required by hba */
7077 pdev->needs_freset = 1;
7078 }
7079
7080 /* Configure PCI I/O space. */
7081 ret = ha->isp_ops->iospace_config(ha);
7082 if (ret)
7083 goto probe_failed_ioconfig;
7084
7085 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
7086 pdev->device, pdev->irq, ha->reg);
7087
7088 qla4xxx_config_dma_addressing(ha);
7089
7090 /* Initialize lists and spinlocks. */
7091 INIT_LIST_HEAD(&ha->free_srb_q);
7092
7093 mutex_init(&ha->mbox_sem);
7094 mutex_init(&ha->chap_sem);
7095 init_completion(&ha->mbx_intr_comp);
7096 init_completion(&ha->disable_acb_comp);
7097
7098 spin_lock_init(&ha->hardware_lock);
7099 spin_lock_init(&ha->work_lock);
7100
7101 /* Initialize work list */
7102 INIT_LIST_HEAD(&ha->work_list);
7103
7104 /* Allocate dma buffers */
7105 if (qla4xxx_mem_alloc(ha)) {
7106 ql4_printk(KERN_WARNING, ha,
7107 "[ERROR] Failed to allocate memory for adapter\n");
7108
7109 ret = -ENOMEM;
7110 goto probe_failed;
7111 }
7112
7113 host->cmd_per_lun = 3;
7114 host->max_channel = 0;
7115 host->max_lun = MAX_LUNS - 1;
7116 host->max_id = MAX_TARGETS;
7117 host->max_cmd_len = IOCB_MAX_CDB_LEN;
7118 host->can_queue = MAX_SRBS ;
7119 host->transportt = qla4xxx_scsi_transport;
7120
7121 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
7122 if (ret) {
7123 ql4_printk(KERN_WARNING, ha,
7124 "%s: scsi_init_shared_tag_map failed\n", __func__);
7125 goto probe_failed;
7126 }
7127
7128 pci_set_drvdata(pdev, ha);
7129
7130 ret = scsi_add_host(host, &pdev->dev);
7131 if (ret)
7132 goto probe_failed;
7133
7134 if (is_qla80XX(ha))
7135 qla4_8xxx_get_flash_info(ha);
7136
7137 if (is_qla8032(ha) || is_qla8042(ha)) {
7138 qla4_83xx_read_reset_template(ha);
7139 /*
7140 * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
7141 * If DONRESET_BIT0 is set, drivers should not set dev_state
7142 * to NEED_RESET. But if NEED_RESET is set, drivers should
7143 * should honor the reset.
7144 */
7145 if (ql4xdontresethba == 1)
7146 qla4_83xx_set_idc_dontreset(ha);
7147 }
7148
7149 /*
7150 * Initialize the Host adapter request/response queues and
7151 * firmware
7152 * NOTE: interrupts enabled upon successful completion
7153 */
7154 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7155
7156 /* Dont retry adapter initialization if IRQ allocation failed */
7157 if (is_qla80XX(ha) && !test_bit(AF_IRQ_ATTACHED, &ha->flags)) {
7158 ql4_printk(KERN_WARNING, ha, "%s: Skipping retry of adapter initialization\n",
7159 __func__);
7160 goto skip_retry_init;
7161 }
7162
7163 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
7164 init_retry_count++ < MAX_INIT_RETRIES) {
7165
7166 if (is_qla80XX(ha)) {
7167 ha->isp_ops->idc_lock(ha);
7168 dev_state = qla4_8xxx_rd_direct(ha,
7169 QLA8XXX_CRB_DEV_STATE);
7170 ha->isp_ops->idc_unlock(ha);
7171 if (dev_state == QLA8XXX_DEV_FAILED) {
7172 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
7173 "initialize adapter. H/W is in failed state\n",
7174 __func__);
7175 break;
7176 }
7177 }
7178 DEBUG2(printk("scsi: %s: retrying adapter initialization "
7179 "(%d)\n", __func__, init_retry_count));
7180
7181 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
7182 continue;
7183
7184 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7185 }
7186
7187 skip_retry_init:
7188 if (!test_bit(AF_ONLINE, &ha->flags)) {
7189 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
7190
7191 if ((is_qla8022(ha) && ql4xdontresethba) ||
7192 ((is_qla8032(ha) || is_qla8042(ha)) &&
7193 qla4_83xx_idc_dontreset(ha))) {
7194 /* Put the device in failed state. */
7195 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
7196 ha->isp_ops->idc_lock(ha);
7197 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7198 QLA8XXX_DEV_FAILED);
7199 ha->isp_ops->idc_unlock(ha);
7200 }
7201 ret = -ENODEV;
7202 goto remove_host;
7203 }
7204
7205 /* Startup the kernel thread for this host adapter. */
7206 DEBUG2(printk("scsi: %s: Starting kernel thread for "
7207 "qla4xxx_dpc\n", __func__));
7208 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
7209 ha->dpc_thread = create_singlethread_workqueue(buf);
7210 if (!ha->dpc_thread) {
7211 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
7212 ret = -ENODEV;
7213 goto remove_host;
7214 }
7215 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
7216
7217 ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
7218 ha->host_no);
7219 if (!ha->task_wq) {
7220 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
7221 ret = -ENODEV;
7222 goto remove_host;
7223 }
7224
7225 /*
7226 * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
7227 * (which is called indirectly by qla4xxx_initialize_adapter),
7228 * so that irqs will be registered after crbinit but before
7229 * mbx_intr_enable.
7230 */
7231 if (is_qla40XX(ha)) {
7232 ret = qla4xxx_request_irqs(ha);
7233 if (ret) {
7234 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
7235 "interrupt %d already in use.\n", pdev->irq);
7236 goto remove_host;
7237 }
7238 }
7239
7240 pci_save_state(ha->pdev);
7241 ha->isp_ops->enable_intrs(ha);
7242
7243 /* Start timer thread. */
7244 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
7245
7246 set_bit(AF_INIT_DONE, &ha->flags);
7247
7248 qla4_8xxx_alloc_sysfs_attr(ha);
7249
7250 printk(KERN_INFO
7251 " QLogic iSCSI HBA Driver version: %s\n"
7252 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
7253 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
7254 ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
7255 ha->fw_info.fw_patch, ha->fw_info.fw_build);
7256
7257 /* Set the driver version */
7258 if (is_qla80XX(ha))
7259 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
7260
7261 if (qla4xxx_setup_boot_info(ha))
7262 ql4_printk(KERN_ERR, ha,
7263 "%s: No iSCSI boot target configured\n", __func__);
7264
7265 if (qla4xxx_sysfs_ddb_export(ha))
7266 ql4_printk(KERN_ERR, ha,
7267 "%s: Error exporting ddb to sysfs\n", __func__);
7268
7269 /* Perform the build ddb list and login to each */
7270 qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
7271 iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
7272 qla4xxx_wait_login_resp_boot_tgt(ha);
7273
7274 qla4xxx_create_chap_list(ha);
7275
7276 qla4xxx_create_ifaces(ha);
7277 return 0;
7278
7279 remove_host:
7280 scsi_remove_host(ha->host);
7281
7282 probe_failed:
7283 qla4xxx_free_adapter(ha);
7284
7285 probe_failed_ioconfig:
7286 pci_disable_pcie_error_reporting(pdev);
7287 scsi_host_put(ha->host);
7288
7289 probe_disable_device:
7290 pci_disable_device(pdev);
7291
7292 return ret;
7293 }
7294
7295 /**
7296 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
7297 * @ha: pointer to adapter structure
7298 *
7299 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
7300 * so that the other port will not re-initialize while in the process of
7301 * removing the ha due to driver unload or hba hotplug.
7302 **/
7303 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
7304 {
7305 struct scsi_qla_host *other_ha = NULL;
7306 struct pci_dev *other_pdev = NULL;
7307 int fn = ISP4XXX_PCI_FN_2;
7308
7309 /*iscsi function numbers for ISP4xxx is 1 and 3*/
7310 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
7311 fn = ISP4XXX_PCI_FN_1;
7312
7313 other_pdev =
7314 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7315 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7316 fn));
7317
7318 /* Get other_ha if other_pdev is valid and state is enable*/
7319 if (other_pdev) {
7320 if (atomic_read(&other_pdev->enable_cnt)) {
7321 other_ha = pci_get_drvdata(other_pdev);
7322 if (other_ha) {
7323 set_bit(AF_HA_REMOVAL, &other_ha->flags);
7324 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
7325 "Prevent %s reinit\n", __func__,
7326 dev_name(&other_ha->pdev->dev)));
7327 }
7328 }
7329 pci_dev_put(other_pdev);
7330 }
7331 }
7332
7333 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
7334 {
7335 struct ddb_entry *ddb_entry;
7336 int options;
7337 int idx;
7338
7339 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7340
7341 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7342 if ((ddb_entry != NULL) &&
7343 (ddb_entry->ddb_type == FLASH_DDB)) {
7344
7345 options = LOGOUT_OPTION_CLOSE_SESSION;
7346 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
7347 == QLA_ERROR)
7348 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
7349 __func__);
7350
7351 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7352 /*
7353 * we have decremented the reference count of the driver
7354 * when we setup the session to have the driver unload
7355 * to be seamless without actually destroying the
7356 * session
7357 **/
7358 try_module_get(qla4xxx_iscsi_transport.owner);
7359 iscsi_destroy_endpoint(ddb_entry->conn->ep);
7360 qla4xxx_free_ddb(ha, ddb_entry);
7361 iscsi_session_teardown(ddb_entry->sess);
7362 }
7363 }
7364 }
7365 /**
7366 * qla4xxx_remove_adapter - callback function to remove adapter.
7367 * @pci_dev: PCI device pointer
7368 **/
7369 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
7370 {
7371 struct scsi_qla_host *ha;
7372
7373 /*
7374 * If the PCI device is disabled then it means probe_adapter had
7375 * failed and resources already cleaned up on probe_adapter exit.
7376 */
7377 if (!pci_is_enabled(pdev))
7378 return;
7379
7380 ha = pci_get_drvdata(pdev);
7381
7382 if (is_qla40XX(ha))
7383 qla4xxx_prevent_other_port_reinit(ha);
7384
7385 /* destroy iface from sysfs */
7386 qla4xxx_destroy_ifaces(ha);
7387
7388 if ((!ql4xdisablesysfsboot) && ha->boot_kset)
7389 iscsi_boot_destroy_kset(ha->boot_kset);
7390
7391 qla4xxx_destroy_fw_ddb_session(ha);
7392 qla4_8xxx_free_sysfs_attr(ha);
7393
7394 qla4xxx_sysfs_ddb_remove(ha);
7395 scsi_remove_host(ha->host);
7396
7397 qla4xxx_free_adapter(ha);
7398
7399 scsi_host_put(ha->host);
7400
7401 pci_disable_pcie_error_reporting(pdev);
7402 pci_disable_device(pdev);
7403 pci_set_drvdata(pdev, NULL);
7404 }
7405
7406 /**
7407 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
7408 * @ha: HA context
7409 *
7410 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
7411 * supported addressing method.
7412 */
7413 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
7414 {
7415 int retval;
7416
7417 /* Update our PCI device dma_mask for full 64 bit mask */
7418 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
7419 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
7420 dev_dbg(&ha->pdev->dev,
7421 "Failed to set 64 bit PCI consistent mask; "
7422 "using 32 bit.\n");
7423 retval = pci_set_consistent_dma_mask(ha->pdev,
7424 DMA_BIT_MASK(32));
7425 }
7426 } else
7427 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
7428 }
7429
7430 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
7431 {
7432 struct iscsi_cls_session *cls_sess;
7433 struct iscsi_session *sess;
7434 struct ddb_entry *ddb;
7435 int queue_depth = QL4_DEF_QDEPTH;
7436
7437 cls_sess = starget_to_session(sdev->sdev_target);
7438 sess = cls_sess->dd_data;
7439 ddb = sess->dd_data;
7440
7441 sdev->hostdata = ddb;
7442 sdev->tagged_supported = 1;
7443
7444 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
7445 queue_depth = ql4xmaxqdepth;
7446
7447 scsi_activate_tcq(sdev, queue_depth);
7448 return 0;
7449 }
7450
7451 static int qla4xxx_slave_configure(struct scsi_device *sdev)
7452 {
7453 sdev->tagged_supported = 1;
7454 return 0;
7455 }
7456
7457 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
7458 {
7459 scsi_deactivate_tcq(sdev, 1);
7460 }
7461
7462 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
7463 int reason)
7464 {
7465 if (!ql4xqfulltracking)
7466 return -EOPNOTSUPP;
7467
7468 return iscsi_change_queue_depth(sdev, qdepth, reason);
7469 }
7470
7471 /**
7472 * qla4xxx_del_from_active_array - returns an active srb
7473 * @ha: Pointer to host adapter structure.
7474 * @index: index into the active_array
7475 *
7476 * This routine removes and returns the srb at the specified index
7477 **/
7478 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
7479 uint32_t index)
7480 {
7481 struct srb *srb = NULL;
7482 struct scsi_cmnd *cmd = NULL;
7483
7484 cmd = scsi_host_find_tag(ha->host, index);
7485 if (!cmd)
7486 return srb;
7487
7488 srb = (struct srb *)CMD_SP(cmd);
7489 if (!srb)
7490 return srb;
7491
7492 /* update counters */
7493 if (srb->flags & SRB_DMA_VALID) {
7494 ha->iocb_cnt -= srb->iocb_cnt;
7495 if (srb->cmd)
7496 srb->cmd->host_scribble =
7497 (unsigned char *)(unsigned long) MAX_SRBS;
7498 }
7499 return srb;
7500 }
7501
7502 /**
7503 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
7504 * @ha: Pointer to host adapter structure.
7505 * @cmd: Scsi Command to wait on.
7506 *
7507 * This routine waits for the command to be returned by the Firmware
7508 * for some max time.
7509 **/
7510 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
7511 struct scsi_cmnd *cmd)
7512 {
7513 int done = 0;
7514 struct srb *rp;
7515 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
7516 int ret = SUCCESS;
7517
7518 /* Dont wait on command if PCI error is being handled
7519 * by PCI AER driver
7520 */
7521 if (unlikely(pci_channel_offline(ha->pdev)) ||
7522 (test_bit(AF_EEH_BUSY, &ha->flags))) {
7523 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
7524 ha->host_no, __func__);
7525 return ret;
7526 }
7527
7528 do {
7529 /* Checking to see if its returned to OS */
7530 rp = (struct srb *) CMD_SP(cmd);
7531 if (rp == NULL) {
7532 done++;
7533 break;
7534 }
7535
7536 msleep(2000);
7537 } while (max_wait_time--);
7538
7539 return done;
7540 }
7541
7542 /**
7543 * qla4xxx_wait_for_hba_online - waits for HBA to come online
7544 * @ha: Pointer to host adapter structure
7545 **/
7546 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
7547 {
7548 unsigned long wait_online;
7549
7550 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
7551 while (time_before(jiffies, wait_online)) {
7552
7553 if (adapter_up(ha))
7554 return QLA_SUCCESS;
7555
7556 msleep(2000);
7557 }
7558
7559 return QLA_ERROR;
7560 }
7561
7562 /**
7563 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
7564 * @ha: pointer to HBA
7565 * @t: target id
7566 * @l: lun id
7567 *
7568 * This function waits for all outstanding commands to a lun to complete. It
7569 * returns 0 if all pending commands are returned and 1 otherwise.
7570 **/
7571 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
7572 struct scsi_target *stgt,
7573 struct scsi_device *sdev)
7574 {
7575 int cnt;
7576 int status = 0;
7577 struct scsi_cmnd *cmd;
7578
7579 /*
7580 * Waiting for all commands for the designated target or dev
7581 * in the active array
7582 */
7583 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
7584 cmd = scsi_host_find_tag(ha->host, cnt);
7585 if (cmd && stgt == scsi_target(cmd->device) &&
7586 (!sdev || sdev == cmd->device)) {
7587 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7588 status++;
7589 break;
7590 }
7591 }
7592 }
7593 return status;
7594 }
7595
7596 /**
7597 * qla4xxx_eh_abort - callback for abort task.
7598 * @cmd: Pointer to Linux's SCSI command structure
7599 *
7600 * This routine is called by the Linux OS to abort the specified
7601 * command.
7602 **/
7603 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
7604 {
7605 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7606 unsigned int id = cmd->device->id;
7607 unsigned int lun = cmd->device->lun;
7608 unsigned long flags;
7609 struct srb *srb = NULL;
7610 int ret = SUCCESS;
7611 int wait = 0;
7612
7613 ql4_printk(KERN_INFO, ha,
7614 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
7615 ha->host_no, id, lun, cmd);
7616
7617 spin_lock_irqsave(&ha->hardware_lock, flags);
7618 srb = (struct srb *) CMD_SP(cmd);
7619 if (!srb) {
7620 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7621 return SUCCESS;
7622 }
7623 kref_get(&srb->srb_ref);
7624 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7625
7626 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
7627 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
7628 ha->host_no, id, lun));
7629 ret = FAILED;
7630 } else {
7631 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
7632 ha->host_no, id, lun));
7633 wait = 1;
7634 }
7635
7636 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
7637
7638 /* Wait for command to complete */
7639 if (wait) {
7640 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7641 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
7642 ha->host_no, id, lun));
7643 ret = FAILED;
7644 }
7645 }
7646
7647 ql4_printk(KERN_INFO, ha,
7648 "scsi%ld:%d:%d: Abort command - %s\n",
7649 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
7650
7651 return ret;
7652 }
7653
7654 /**
7655 * qla4xxx_eh_device_reset - callback for target reset.
7656 * @cmd: Pointer to Linux's SCSI command structure
7657 *
7658 * This routine is called by the Linux OS to reset all luns on the
7659 * specified target.
7660 **/
7661 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
7662 {
7663 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7664 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7665 int ret = FAILED, stat;
7666
7667 if (!ddb_entry)
7668 return ret;
7669
7670 ret = iscsi_block_scsi_eh(cmd);
7671 if (ret)
7672 return ret;
7673 ret = FAILED;
7674
7675 ql4_printk(KERN_INFO, ha,
7676 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
7677 cmd->device->channel, cmd->device->id, cmd->device->lun);
7678
7679 DEBUG2(printk(KERN_INFO
7680 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
7681 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
7682 cmd, jiffies, cmd->request->timeout / HZ,
7683 ha->dpc_flags, cmd->result, cmd->allowed));
7684
7685 /* FIXME: wait for hba to go online */
7686 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
7687 if (stat != QLA_SUCCESS) {
7688 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
7689 goto eh_dev_reset_done;
7690 }
7691
7692 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7693 cmd->device)) {
7694 ql4_printk(KERN_INFO, ha,
7695 "DEVICE RESET FAILED - waiting for "
7696 "commands.\n");
7697 goto eh_dev_reset_done;
7698 }
7699
7700 /* Send marker. */
7701 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7702 MM_LUN_RESET) != QLA_SUCCESS)
7703 goto eh_dev_reset_done;
7704
7705 ql4_printk(KERN_INFO, ha,
7706 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
7707 ha->host_no, cmd->device->channel, cmd->device->id,
7708 cmd->device->lun);
7709
7710 ret = SUCCESS;
7711
7712 eh_dev_reset_done:
7713
7714 return ret;
7715 }
7716
7717 /**
7718 * qla4xxx_eh_target_reset - callback for target reset.
7719 * @cmd: Pointer to Linux's SCSI command structure
7720 *
7721 * This routine is called by the Linux OS to reset the target.
7722 **/
7723 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
7724 {
7725 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7726 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7727 int stat, ret;
7728
7729 if (!ddb_entry)
7730 return FAILED;
7731
7732 ret = iscsi_block_scsi_eh(cmd);
7733 if (ret)
7734 return ret;
7735
7736 starget_printk(KERN_INFO, scsi_target(cmd->device),
7737 "WARM TARGET RESET ISSUED.\n");
7738
7739 DEBUG2(printk(KERN_INFO
7740 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
7741 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
7742 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
7743 ha->dpc_flags, cmd->result, cmd->allowed));
7744
7745 stat = qla4xxx_reset_target(ha, ddb_entry);
7746 if (stat != QLA_SUCCESS) {
7747 starget_printk(KERN_INFO, scsi_target(cmd->device),
7748 "WARM TARGET RESET FAILED.\n");
7749 return FAILED;
7750 }
7751
7752 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7753 NULL)) {
7754 starget_printk(KERN_INFO, scsi_target(cmd->device),
7755 "WARM TARGET DEVICE RESET FAILED - "
7756 "waiting for commands.\n");
7757 return FAILED;
7758 }
7759
7760 /* Send marker. */
7761 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7762 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
7763 starget_printk(KERN_INFO, scsi_target(cmd->device),
7764 "WARM TARGET DEVICE RESET FAILED - "
7765 "marker iocb failed.\n");
7766 return FAILED;
7767 }
7768
7769 starget_printk(KERN_INFO, scsi_target(cmd->device),
7770 "WARM TARGET RESET SUCCEEDED.\n");
7771 return SUCCESS;
7772 }
7773
7774 /**
7775 * qla4xxx_is_eh_active - check if error handler is running
7776 * @shost: Pointer to SCSI Host struct
7777 *
7778 * This routine finds that if reset host is called in EH
7779 * scenario or from some application like sg_reset
7780 **/
7781 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
7782 {
7783 if (shost->shost_state == SHOST_RECOVERY)
7784 return 1;
7785 return 0;
7786 }
7787
7788 /**
7789 * qla4xxx_eh_host_reset - kernel callback
7790 * @cmd: Pointer to Linux's SCSI command structure
7791 *
7792 * This routine is invoked by the Linux kernel to perform fatal error
7793 * recovery on the specified adapter.
7794 **/
7795 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
7796 {
7797 int return_status = FAILED;
7798 struct scsi_qla_host *ha;
7799
7800 ha = to_qla_host(cmd->device->host);
7801
7802 if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
7803 qla4_83xx_set_idc_dontreset(ha);
7804
7805 /*
7806 * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
7807 * protocol drivers, we should not set device_state to NEED_RESET
7808 */
7809 if (ql4xdontresethba ||
7810 ((is_qla8032(ha) || is_qla8042(ha)) &&
7811 qla4_83xx_idc_dontreset(ha))) {
7812 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
7813 ha->host_no, __func__));
7814
7815 /* Clear outstanding srb in queues */
7816 if (qla4xxx_is_eh_active(cmd->device->host))
7817 qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
7818
7819 return FAILED;
7820 }
7821
7822 ql4_printk(KERN_INFO, ha,
7823 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
7824 cmd->device->channel, cmd->device->id, cmd->device->lun);
7825
7826 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
7827 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
7828 "DEAD.\n", ha->host_no, cmd->device->channel,
7829 __func__));
7830
7831 return FAILED;
7832 }
7833
7834 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7835 if (is_qla80XX(ha))
7836 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
7837 else
7838 set_bit(DPC_RESET_HA, &ha->dpc_flags);
7839 }
7840
7841 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
7842 return_status = SUCCESS;
7843
7844 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
7845 return_status == FAILED ? "FAILED" : "SUCCEEDED");
7846
7847 return return_status;
7848 }
7849
7850 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
7851 {
7852 uint32_t mbox_cmd[MBOX_REG_COUNT];
7853 uint32_t mbox_sts[MBOX_REG_COUNT];
7854 struct addr_ctrl_blk_def *acb = NULL;
7855 uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
7856 int rval = QLA_SUCCESS;
7857 dma_addr_t acb_dma;
7858
7859 acb = dma_alloc_coherent(&ha->pdev->dev,
7860 sizeof(struct addr_ctrl_blk_def),
7861 &acb_dma, GFP_KERNEL);
7862 if (!acb) {
7863 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
7864 __func__);
7865 rval = -ENOMEM;
7866 goto exit_port_reset;
7867 }
7868
7869 memset(acb, 0, acb_len);
7870
7871 rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
7872 if (rval != QLA_SUCCESS) {
7873 rval = -EIO;
7874 goto exit_free_acb;
7875 }
7876
7877 rval = qla4xxx_disable_acb(ha);
7878 if (rval != QLA_SUCCESS) {
7879 rval = -EIO;
7880 goto exit_free_acb;
7881 }
7882
7883 wait_for_completion_timeout(&ha->disable_acb_comp,
7884 DISABLE_ACB_TOV * HZ);
7885
7886 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
7887 if (rval != QLA_SUCCESS) {
7888 rval = -EIO;
7889 goto exit_free_acb;
7890 }
7891
7892 exit_free_acb:
7893 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
7894 acb, acb_dma);
7895 exit_port_reset:
7896 DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
7897 rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
7898 return rval;
7899 }
7900
7901 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
7902 {
7903 struct scsi_qla_host *ha = to_qla_host(shost);
7904 int rval = QLA_SUCCESS;
7905 uint32_t idc_ctrl;
7906
7907 if (ql4xdontresethba) {
7908 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
7909 __func__));
7910 rval = -EPERM;
7911 goto exit_host_reset;
7912 }
7913
7914 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
7915 goto recover_adapter;
7916
7917 switch (reset_type) {
7918 case SCSI_ADAPTER_RESET:
7919 set_bit(DPC_RESET_HA, &ha->dpc_flags);
7920 break;
7921 case SCSI_FIRMWARE_RESET:
7922 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7923 if (is_qla80XX(ha))
7924 /* set firmware context reset */
7925 set_bit(DPC_RESET_HA_FW_CONTEXT,
7926 &ha->dpc_flags);
7927 else {
7928 rval = qla4xxx_context_reset(ha);
7929 goto exit_host_reset;
7930 }
7931 }
7932 break;
7933 }
7934
7935 recover_adapter:
7936 /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
7937 * reset is issued by application */
7938 if ((is_qla8032(ha) || is_qla8042(ha)) &&
7939 test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7940 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
7941 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
7942 (idc_ctrl | GRACEFUL_RESET_BIT1));
7943 }
7944
7945 rval = qla4xxx_recover_adapter(ha);
7946 if (rval != QLA_SUCCESS) {
7947 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
7948 __func__));
7949 rval = -EIO;
7950 }
7951
7952 exit_host_reset:
7953 return rval;
7954 }
7955
7956 /* PCI AER driver recovers from all correctable errors w/o
7957 * driver intervention. For uncorrectable errors PCI AER
7958 * driver calls the following device driver's callbacks
7959 *
7960 * - Fatal Errors - link_reset
7961 * - Non-Fatal Errors - driver's pci_error_detected() which
7962 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
7963 *
7964 * PCI AER driver calls
7965 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
7966 * returns RECOVERED or NEED_RESET if fw_hung
7967 * NEED_RESET - driver's slot_reset()
7968 * DISCONNECT - device is dead & cannot recover
7969 * RECOVERED - driver's pci_resume()
7970 */
7971 static pci_ers_result_t
7972 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
7973 {
7974 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7975
7976 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
7977 ha->host_no, __func__, state);
7978
7979 if (!is_aer_supported(ha))
7980 return PCI_ERS_RESULT_NONE;
7981
7982 switch (state) {
7983 case pci_channel_io_normal:
7984 clear_bit(AF_EEH_BUSY, &ha->flags);
7985 return PCI_ERS_RESULT_CAN_RECOVER;
7986 case pci_channel_io_frozen:
7987 set_bit(AF_EEH_BUSY, &ha->flags);
7988 qla4xxx_mailbox_premature_completion(ha);
7989 qla4xxx_free_irqs(ha);
7990 pci_disable_device(pdev);
7991 /* Return back all IOs */
7992 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
7993 return PCI_ERS_RESULT_NEED_RESET;
7994 case pci_channel_io_perm_failure:
7995 set_bit(AF_EEH_BUSY, &ha->flags);
7996 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
7997 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
7998 return PCI_ERS_RESULT_DISCONNECT;
7999 }
8000 return PCI_ERS_RESULT_NEED_RESET;
8001 }
8002
8003 /**
8004 * qla4xxx_pci_mmio_enabled() gets called if
8005 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
8006 * and read/write to the device still works.
8007 **/
8008 static pci_ers_result_t
8009 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
8010 {
8011 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8012
8013 if (!is_aer_supported(ha))
8014 return PCI_ERS_RESULT_NONE;
8015
8016 return PCI_ERS_RESULT_RECOVERED;
8017 }
8018
8019 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
8020 {
8021 uint32_t rval = QLA_ERROR;
8022 int fn;
8023 struct pci_dev *other_pdev = NULL;
8024
8025 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
8026
8027 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
8028
8029 if (test_bit(AF_ONLINE, &ha->flags)) {
8030 clear_bit(AF_ONLINE, &ha->flags);
8031 clear_bit(AF_LINK_UP, &ha->flags);
8032 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
8033 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
8034 }
8035
8036 fn = PCI_FUNC(ha->pdev->devfn);
8037 while (fn > 0) {
8038 fn--;
8039 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
8040 "func %x\n", ha->host_no, __func__, fn);
8041 /* Get the pci device given the domain, bus,
8042 * slot/function number */
8043 other_pdev =
8044 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8045 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8046 fn));
8047
8048 if (!other_pdev)
8049 continue;
8050
8051 if (atomic_read(&other_pdev->enable_cnt)) {
8052 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
8053 "func in enabled state%x\n", ha->host_no,
8054 __func__, fn);
8055 pci_dev_put(other_pdev);
8056 break;
8057 }
8058 pci_dev_put(other_pdev);
8059 }
8060
8061 /* The first function on the card, the reset owner will
8062 * start & initialize the firmware. The other functions
8063 * on the card will reset the firmware context
8064 */
8065 if (!fn) {
8066 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
8067 "0x%x is the owner\n", ha->host_no, __func__,
8068 ha->pdev->devfn);
8069
8070 ha->isp_ops->idc_lock(ha);
8071 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8072 QLA8XXX_DEV_COLD);
8073 ha->isp_ops->idc_unlock(ha);
8074
8075 rval = qla4_8xxx_update_idc_reg(ha);
8076 if (rval == QLA_ERROR) {
8077 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
8078 ha->host_no, __func__);
8079 ha->isp_ops->idc_lock(ha);
8080 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8081 QLA8XXX_DEV_FAILED);
8082 ha->isp_ops->idc_unlock(ha);
8083 goto exit_error_recovery;
8084 }
8085
8086 clear_bit(AF_FW_RECOVERY, &ha->flags);
8087 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
8088
8089 if (rval != QLA_SUCCESS) {
8090 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
8091 "FAILED\n", ha->host_no, __func__);
8092 ha->isp_ops->idc_lock(ha);
8093 qla4_8xxx_clear_drv_active(ha);
8094 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8095 QLA8XXX_DEV_FAILED);
8096 ha->isp_ops->idc_unlock(ha);
8097 } else {
8098 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
8099 "READY\n", ha->host_no, __func__);
8100 ha->isp_ops->idc_lock(ha);
8101 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8102 QLA8XXX_DEV_READY);
8103 /* Clear driver state register */
8104 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
8105 qla4_8xxx_set_drv_active(ha);
8106 ha->isp_ops->idc_unlock(ha);
8107 ha->isp_ops->enable_intrs(ha);
8108 }
8109 } else {
8110 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
8111 "the reset owner\n", ha->host_no, __func__,
8112 ha->pdev->devfn);
8113 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
8114 QLA8XXX_DEV_READY)) {
8115 clear_bit(AF_FW_RECOVERY, &ha->flags);
8116 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
8117 if (rval == QLA_SUCCESS)
8118 ha->isp_ops->enable_intrs(ha);
8119
8120 ha->isp_ops->idc_lock(ha);
8121 qla4_8xxx_set_drv_active(ha);
8122 ha->isp_ops->idc_unlock(ha);
8123 }
8124 }
8125 exit_error_recovery:
8126 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
8127 return rval;
8128 }
8129
8130 static pci_ers_result_t
8131 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
8132 {
8133 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
8134 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8135 int rc;
8136
8137 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
8138 ha->host_no, __func__);
8139
8140 if (!is_aer_supported(ha))
8141 return PCI_ERS_RESULT_NONE;
8142
8143 /* Restore the saved state of PCIe device -
8144 * BAR registers, PCI Config space, PCIX, MSI,
8145 * IOV states
8146 */
8147 pci_restore_state(pdev);
8148
8149 /* pci_restore_state() clears the saved_state flag of the device
8150 * save restored state which resets saved_state flag
8151 */
8152 pci_save_state(pdev);
8153
8154 /* Initialize device or resume if in suspended state */
8155 rc = pci_enable_device(pdev);
8156 if (rc) {
8157 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
8158 "device after reset\n", ha->host_no, __func__);
8159 goto exit_slot_reset;
8160 }
8161
8162 ha->isp_ops->disable_intrs(ha);
8163
8164 if (is_qla80XX(ha)) {
8165 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
8166 ret = PCI_ERS_RESULT_RECOVERED;
8167 goto exit_slot_reset;
8168 } else
8169 goto exit_slot_reset;
8170 }
8171
8172 exit_slot_reset:
8173 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
8174 "device after reset\n", ha->host_no, __func__, ret);
8175 return ret;
8176 }
8177
8178 static void
8179 qla4xxx_pci_resume(struct pci_dev *pdev)
8180 {
8181 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8182 int ret;
8183
8184 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
8185 ha->host_no, __func__);
8186
8187 ret = qla4xxx_wait_for_hba_online(ha);
8188 if (ret != QLA_SUCCESS) {
8189 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
8190 "resume I/O from slot/link_reset\n", ha->host_no,
8191 __func__);
8192 }
8193
8194 pci_cleanup_aer_uncorrect_error_status(pdev);
8195 clear_bit(AF_EEH_BUSY, &ha->flags);
8196 }
8197
8198 static const struct pci_error_handlers qla4xxx_err_handler = {
8199 .error_detected = qla4xxx_pci_error_detected,
8200 .mmio_enabled = qla4xxx_pci_mmio_enabled,
8201 .slot_reset = qla4xxx_pci_slot_reset,
8202 .resume = qla4xxx_pci_resume,
8203 };
8204
8205 static struct pci_device_id qla4xxx_pci_tbl[] = {
8206 {
8207 .vendor = PCI_VENDOR_ID_QLOGIC,
8208 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
8209 .subvendor = PCI_ANY_ID,
8210 .subdevice = PCI_ANY_ID,
8211 },
8212 {
8213 .vendor = PCI_VENDOR_ID_QLOGIC,
8214 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
8215 .subvendor = PCI_ANY_ID,
8216 .subdevice = PCI_ANY_ID,
8217 },
8218 {
8219 .vendor = PCI_VENDOR_ID_QLOGIC,
8220 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
8221 .subvendor = PCI_ANY_ID,
8222 .subdevice = PCI_ANY_ID,
8223 },
8224 {
8225 .vendor = PCI_VENDOR_ID_QLOGIC,
8226 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
8227 .subvendor = PCI_ANY_ID,
8228 .subdevice = PCI_ANY_ID,
8229 },
8230 {
8231 .vendor = PCI_VENDOR_ID_QLOGIC,
8232 .device = PCI_DEVICE_ID_QLOGIC_ISP8324,
8233 .subvendor = PCI_ANY_ID,
8234 .subdevice = PCI_ANY_ID,
8235 },
8236 {
8237 .vendor = PCI_VENDOR_ID_QLOGIC,
8238 .device = PCI_DEVICE_ID_QLOGIC_ISP8042,
8239 .subvendor = PCI_ANY_ID,
8240 .subdevice = PCI_ANY_ID,
8241 },
8242 {0, 0},
8243 };
8244 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
8245
8246 static struct pci_driver qla4xxx_pci_driver = {
8247 .name = DRIVER_NAME,
8248 .id_table = qla4xxx_pci_tbl,
8249 .probe = qla4xxx_probe_adapter,
8250 .remove = qla4xxx_remove_adapter,
8251 .err_handler = &qla4xxx_err_handler,
8252 };
8253
8254 static int __init qla4xxx_module_init(void)
8255 {
8256 int ret;
8257
8258 /* Allocate cache for SRBs. */
8259 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
8260 SLAB_HWCACHE_ALIGN, NULL);
8261 if (srb_cachep == NULL) {
8262 printk(KERN_ERR
8263 "%s: Unable to allocate SRB cache..."
8264 "Failing load!\n", DRIVER_NAME);
8265 ret = -ENOMEM;
8266 goto no_srp_cache;
8267 }
8268
8269 /* Derive version string. */
8270 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
8271 if (ql4xextended_error_logging)
8272 strcat(qla4xxx_version_str, "-debug");
8273
8274 qla4xxx_scsi_transport =
8275 iscsi_register_transport(&qla4xxx_iscsi_transport);
8276 if (!qla4xxx_scsi_transport){
8277 ret = -ENODEV;
8278 goto release_srb_cache;
8279 }
8280
8281 ret = pci_register_driver(&qla4xxx_pci_driver);
8282 if (ret)
8283 goto unregister_transport;
8284
8285 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
8286 return 0;
8287
8288 unregister_transport:
8289 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8290 release_srb_cache:
8291 kmem_cache_destroy(srb_cachep);
8292 no_srp_cache:
8293 return ret;
8294 }
8295
8296 static void __exit qla4xxx_module_exit(void)
8297 {
8298 pci_unregister_driver(&qla4xxx_pci_driver);
8299 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8300 kmem_cache_destroy(srb_cachep);
8301 }
8302
8303 module_init(qla4xxx_module_init);
8304 module_exit(qla4xxx_module_exit);
8305
8306 MODULE_AUTHOR("QLogic Corporation");
8307 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
8308 MODULE_LICENSE("GPL");
8309 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);