1 /*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2012 QLogic Corporation
4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7 #include <linux/moduleparam.h>
8 #include <linux/slab.h>
9 #include <linux/blkdev.h>
10 #include <linux/iscsi_boot_sysfs.h>
11 #include <linux/inet.h>
12
13 #include <scsi/scsi_tcq.h>
14 #include <scsi/scsicam.h>
15
16 #include "ql4_def.h"
17 #include "ql4_version.h"
18 #include "ql4_glbl.h"
19 #include "ql4_dbg.h"
20 #include "ql4_inline.h"
21 #include "ql4_83xx.h"
22
23 /*
24 * Driver version
25 */
26 static char qla4xxx_version_str[40];
27
28 /*
29 * SRB allocation cache
30 */
31 static struct kmem_cache *srb_cachep;
32
33 /*
34 * Module parameter information and variables
35 */
36 static int ql4xdisablesysfsboot = 1;
37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
39 " Set to disable exporting boot targets to sysfs.\n"
40 "\t\t 0 - Export boot targets\n"
41 "\t\t 1 - Do not export boot targets (Default)");
42
43 int ql4xdontresethba;
44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
45 MODULE_PARM_DESC(ql4xdontresethba,
46 " Don't reset the HBA for driver recovery.\n"
47 "\t\t 0 - It will reset HBA (Default)\n"
48 "\t\t 1 - It will NOT reset HBA");
49
50 int ql4xextended_error_logging;
51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
52 MODULE_PARM_DESC(ql4xextended_error_logging,
53 " Option to enable extended error logging.\n"
54 "\t\t 0 - no logging (Default)\n"
55 "\t\t 2 - debug logging");
56
57 int ql4xenablemsix = 1;
58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
59 MODULE_PARM_DESC(ql4xenablemsix,
60 " Set to enable MSI or MSI-X interrupt mechanism.\n"
61 "\t\t 0 = enable INTx interrupt mechanism.\n"
62 "\t\t 1 = enable MSI-X interrupt mechanism (Default).\n"
63 "\t\t 2 = enable MSI interrupt mechanism.");
64
65 #define QL4_DEF_QDEPTH 32
66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
68 MODULE_PARM_DESC(ql4xmaxqdepth,
69 " Maximum queue depth to report for target devices.\n"
70 "\t\t Default: 32.");
71
72 static int ql4xqfulltracking = 1;
73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
74 MODULE_PARM_DESC(ql4xqfulltracking,
75 " Enable or disable dynamic tracking and adjustment of\n"
76 "\t\t scsi device queue depth.\n"
77 "\t\t 0 - Disable.\n"
78 "\t\t 1 - Enable. (Default)");
79
80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
83 " Target Session Recovery Timeout.\n"
84 "\t\t Default: 120 sec.");
85
86 int ql4xmdcapmask = 0x1F;
87 module_param(ql4xmdcapmask, int, S_IRUGO);
88 MODULE_PARM_DESC(ql4xmdcapmask,
89 " Set the Minidump driver capture mask level.\n"
90 "\t\t Default is 0x1F.\n"
91 "\t\t Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
92
93 int ql4xenablemd = 1;
94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
95 MODULE_PARM_DESC(ql4xenablemd,
96 " Set to enable minidump.\n"
97 "\t\t 0 - disable minidump\n"
98 "\t\t 1 - enable minidump (Default)");
99
100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
101 /*
102 * SCSI host template entry points
103 */
104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
105
106 /*
107 * iSCSI template entry points
108 */
109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
110 enum iscsi_param param, char *buf);
111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
112 enum iscsi_param param, char *buf);
113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
114 enum iscsi_host_param param, char *buf);
115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
116 uint32_t len);
117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
118 enum iscsi_param_type param_type,
119 int param, char *buf);
120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
122 struct sockaddr *dst_addr,
123 int non_blocking);
124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
127 enum iscsi_param param, char *buf);
128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
129 static struct iscsi_cls_conn *
130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
132 struct iscsi_cls_conn *cls_conn,
133 uint64_t transport_fd, int is_leading);
134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
135 static struct iscsi_cls_session *
136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
137 uint16_t qdepth, uint32_t initial_cmdsn);
138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
139 static void qla4xxx_task_work(struct work_struct *wdata);
140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
141 static int qla4xxx_task_xmit(struct iscsi_task *);
142 static void qla4xxx_task_cleanup(struct iscsi_task *);
143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
145 struct iscsi_stats *stats);
146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
147 uint32_t iface_type, uint32_t payload_size,
148 uint32_t pid, struct sockaddr *dst_addr);
149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
150 uint32_t *num_entries, char *buf);
151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
152
153 /*
154 * SCSI host template entry points
155 */
156 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
157 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
158 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
159 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
160 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
161 static int qla4xxx_slave_alloc(struct scsi_device *device);
162 static int qla4xxx_slave_configure(struct scsi_device *device);
163 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
164 static umode_t qla4_attr_is_visible(int param_type, int param);
165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
166 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
167 int reason);
168
169 /*
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
qla4xxx_send_ping(struct Scsi_Host * shost,uint32_t iface_num,uint32_t iface_type,uint32_t payload_size,uint32_t pid,struct sockaddr * dst_addr)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
qla4_attr_is_visible(int param_type,int param)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 return S_IRUGO;
382 default:
383 return 0;
384 }
385 case ISCSI_NET_PARAM:
386 switch (param) {
387 case ISCSI_NET_PARAM_IPV4_ADDR:
388 case ISCSI_NET_PARAM_IPV4_SUBNET:
389 case ISCSI_NET_PARAM_IPV4_GW:
390 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
391 case ISCSI_NET_PARAM_IFACE_ENABLE:
392 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
393 case ISCSI_NET_PARAM_IPV6_ADDR:
394 case ISCSI_NET_PARAM_IPV6_ROUTER:
395 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
396 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
397 case ISCSI_NET_PARAM_VLAN_ID:
398 case ISCSI_NET_PARAM_VLAN_PRIORITY:
399 case ISCSI_NET_PARAM_VLAN_ENABLED:
400 case ISCSI_NET_PARAM_MTU:
401 case ISCSI_NET_PARAM_PORT:
402 return S_IRUGO;
403 default:
404 return 0;
405 }
406 case ISCSI_FLASHNODE_PARAM:
407 switch (param) {
408 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
409 case ISCSI_FLASHNODE_PORTAL_TYPE:
410 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
411 case ISCSI_FLASHNODE_DISCOVERY_SESS:
412 case ISCSI_FLASHNODE_ENTRY_EN:
413 case ISCSI_FLASHNODE_HDR_DGST_EN:
414 case ISCSI_FLASHNODE_DATA_DGST_EN:
415 case ISCSI_FLASHNODE_IMM_DATA_EN:
416 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
417 case ISCSI_FLASHNODE_DATASEQ_INORDER:
418 case ISCSI_FLASHNODE_PDU_INORDER:
419 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
420 case ISCSI_FLASHNODE_SNACK_REQ_EN:
421 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
422 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
423 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
424 case ISCSI_FLASHNODE_ERL:
425 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
426 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
427 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
428 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
429 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
430 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
431 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
432 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
433 case ISCSI_FLASHNODE_FIRST_BURST:
434 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
435 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
436 case ISCSI_FLASHNODE_MAX_R2T:
437 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
438 case ISCSI_FLASHNODE_ISID:
439 case ISCSI_FLASHNODE_TSID:
440 case ISCSI_FLASHNODE_PORT:
441 case ISCSI_FLASHNODE_MAX_BURST:
442 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
443 case ISCSI_FLASHNODE_IPADDR:
444 case ISCSI_FLASHNODE_ALIAS:
445 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
446 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
447 case ISCSI_FLASHNODE_LOCAL_PORT:
448 case ISCSI_FLASHNODE_IPV4_TOS:
449 case ISCSI_FLASHNODE_IPV6_TC:
450 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
451 case ISCSI_FLASHNODE_NAME:
452 case ISCSI_FLASHNODE_TPGT:
453 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
454 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
455 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
456 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
457 case ISCSI_FLASHNODE_TCP_RECV_WSF:
458 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
459 case ISCSI_FLASHNODE_USERNAME:
460 case ISCSI_FLASHNODE_PASSWORD:
461 case ISCSI_FLASHNODE_STATSN:
462 case ISCSI_FLASHNODE_EXP_STATSN:
463 case ISCSI_FLASHNODE_IS_BOOT_TGT:
464 return S_IRUGO;
465 default:
466 return 0;
467 }
468 }
469
470 return 0;
471 }
472
qla4xxx_get_chap_list(struct Scsi_Host * shost,uint16_t chap_tbl_idx,uint32_t * num_entries,char * buf)473 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
474 uint32_t *num_entries, char *buf)
475 {
476 struct scsi_qla_host *ha = to_qla_host(shost);
477 struct ql4_chap_table *chap_table;
478 struct iscsi_chap_rec *chap_rec;
479 int max_chap_entries = 0;
480 int valid_chap_entries = 0;
481 int ret = 0, i;
482
483 if (is_qla80XX(ha))
484 max_chap_entries = (ha->hw.flt_chap_size / 2) /
485 sizeof(struct ql4_chap_table);
486 else
487 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
488
489 ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
490 __func__, *num_entries, chap_tbl_idx);
491
492 if (!buf) {
493 ret = -ENOMEM;
494 goto exit_get_chap_list;
495 }
496
497 chap_rec = (struct iscsi_chap_rec *) buf;
498 mutex_lock(&ha->chap_sem);
499 for (i = chap_tbl_idx; i < max_chap_entries; i++) {
500 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
501 if (chap_table->cookie !=
502 __constant_cpu_to_le16(CHAP_VALID_COOKIE))
503 continue;
504
505 chap_rec->chap_tbl_idx = i;
506 strncpy(chap_rec->username, chap_table->name,
507 ISCSI_CHAP_AUTH_NAME_MAX_LEN);
508 strncpy(chap_rec->password, chap_table->secret,
509 QL4_CHAP_MAX_SECRET_LEN);
510 chap_rec->password_length = chap_table->secret_len;
511
512 if (chap_table->flags & BIT_7) /* local */
513 chap_rec->chap_type = CHAP_TYPE_OUT;
514
515 if (chap_table->flags & BIT_6) /* peer */
516 chap_rec->chap_type = CHAP_TYPE_IN;
517
518 chap_rec++;
519
520 valid_chap_entries++;
521 if (valid_chap_entries == *num_entries)
522 break;
523 else
524 continue;
525 }
526 mutex_unlock(&ha->chap_sem);
527
528 exit_get_chap_list:
529 ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
530 __func__, valid_chap_entries);
531 *num_entries = valid_chap_entries;
532 return ret;
533 }
534
__qla4xxx_is_chap_active(struct device * dev,void * data)535 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
536 {
537 int ret = 0;
538 uint16_t *chap_tbl_idx = (uint16_t *) data;
539 struct iscsi_cls_session *cls_session;
540 struct iscsi_session *sess;
541 struct ddb_entry *ddb_entry;
542
543 if (!iscsi_is_session_dev(dev))
544 goto exit_is_chap_active;
545
546 cls_session = iscsi_dev_to_session(dev);
547 sess = cls_session->dd_data;
548 ddb_entry = sess->dd_data;
549
550 if (iscsi_session_chkready(cls_session))
551 goto exit_is_chap_active;
552
553 if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
554 ret = 1;
555
556 exit_is_chap_active:
557 return ret;
558 }
559
qla4xxx_is_chap_active(struct Scsi_Host * shost,uint16_t chap_tbl_idx)560 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
561 uint16_t chap_tbl_idx)
562 {
563 int ret = 0;
564
565 ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
566 __qla4xxx_is_chap_active);
567
568 return ret;
569 }
570
qla4xxx_delete_chap(struct Scsi_Host * shost,uint16_t chap_tbl_idx)571 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
572 {
573 struct scsi_qla_host *ha = to_qla_host(shost);
574 struct ql4_chap_table *chap_table;
575 dma_addr_t chap_dma;
576 int max_chap_entries = 0;
577 uint32_t offset = 0;
578 uint32_t chap_size;
579 int ret = 0;
580
581 chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
582 if (chap_table == NULL)
583 return -ENOMEM;
584
585 memset(chap_table, 0, sizeof(struct ql4_chap_table));
586
587 if (is_qla80XX(ha))
588 max_chap_entries = (ha->hw.flt_chap_size / 2) /
589 sizeof(struct ql4_chap_table);
590 else
591 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
592
593 if (chap_tbl_idx > max_chap_entries) {
594 ret = -EINVAL;
595 goto exit_delete_chap;
596 }
597
598 /* Check if chap index is in use.
599 * If chap is in use don't delet chap entry */
600 ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
601 if (ret) {
602 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
603 "delete from flash\n", chap_tbl_idx);
604 ret = -EBUSY;
605 goto exit_delete_chap;
606 }
607
608 chap_size = sizeof(struct ql4_chap_table);
609 if (is_qla40XX(ha))
610 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
611 else {
612 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
613 /* flt_chap_size is CHAP table size for both ports
614 * so divide it by 2 to calculate the offset for second port
615 */
616 if (ha->port_num == 1)
617 offset += (ha->hw.flt_chap_size / 2);
618 offset += (chap_tbl_idx * chap_size);
619 }
620
621 ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
622 if (ret != QLA_SUCCESS) {
623 ret = -EINVAL;
624 goto exit_delete_chap;
625 }
626
627 DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
628 __le16_to_cpu(chap_table->cookie)));
629
630 if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
631 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
632 goto exit_delete_chap;
633 }
634
635 chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
636
637 offset = FLASH_CHAP_OFFSET |
638 (chap_tbl_idx * sizeof(struct ql4_chap_table));
639 ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
640 FLASH_OPT_RMW_COMMIT);
641 if (ret == QLA_SUCCESS && ha->chap_list) {
642 mutex_lock(&ha->chap_sem);
643 /* Update ha chap_list cache */
644 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
645 chap_table, sizeof(struct ql4_chap_table));
646 mutex_unlock(&ha->chap_sem);
647 }
648 if (ret != QLA_SUCCESS)
649 ret = -EINVAL;
650
651 exit_delete_chap:
652 dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
653 return ret;
654 }
655
qla4xxx_get_iface_param(struct iscsi_iface * iface,enum iscsi_param_type param_type,int param,char * buf)656 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
657 enum iscsi_param_type param_type,
658 int param, char *buf)
659 {
660 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
661 struct scsi_qla_host *ha = to_qla_host(shost);
662 int len = -ENOSYS;
663
664 if (param_type != ISCSI_NET_PARAM)
665 return -ENOSYS;
666
667 switch (param) {
668 case ISCSI_NET_PARAM_IPV4_ADDR:
669 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
670 break;
671 case ISCSI_NET_PARAM_IPV4_SUBNET:
672 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
673 break;
674 case ISCSI_NET_PARAM_IPV4_GW:
675 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
676 break;
677 case ISCSI_NET_PARAM_IFACE_ENABLE:
678 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
679 len = sprintf(buf, "%s\n",
680 (ha->ip_config.ipv4_options &
681 IPOPT_IPV4_PROTOCOL_ENABLE) ?
682 "enabled" : "disabled");
683 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
684 len = sprintf(buf, "%s\n",
685 (ha->ip_config.ipv6_options &
686 IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
687 "enabled" : "disabled");
688 break;
689 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
690 len = sprintf(buf, "%s\n",
691 (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
692 "dhcp" : "static");
693 break;
694 case ISCSI_NET_PARAM_IPV6_ADDR:
695 if (iface->iface_num == 0)
696 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
697 if (iface->iface_num == 1)
698 len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
699 break;
700 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
701 len = sprintf(buf, "%pI6\n",
702 &ha->ip_config.ipv6_link_local_addr);
703 break;
704 case ISCSI_NET_PARAM_IPV6_ROUTER:
705 len = sprintf(buf, "%pI6\n",
706 &ha->ip_config.ipv6_default_router_addr);
707 break;
708 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
709 len = sprintf(buf, "%s\n",
710 (ha->ip_config.ipv6_addl_options &
711 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
712 "nd" : "static");
713 break;
714 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
715 len = sprintf(buf, "%s\n",
716 (ha->ip_config.ipv6_addl_options &
717 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
718 "auto" : "static");
719 break;
720 case ISCSI_NET_PARAM_VLAN_ID:
721 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
722 len = sprintf(buf, "%d\n",
723 (ha->ip_config.ipv4_vlan_tag &
724 ISCSI_MAX_VLAN_ID));
725 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
726 len = sprintf(buf, "%d\n",
727 (ha->ip_config.ipv6_vlan_tag &
728 ISCSI_MAX_VLAN_ID));
729 break;
730 case ISCSI_NET_PARAM_VLAN_PRIORITY:
731 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
732 len = sprintf(buf, "%d\n",
733 ((ha->ip_config.ipv4_vlan_tag >> 13) &
734 ISCSI_MAX_VLAN_PRIORITY));
735 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
736 len = sprintf(buf, "%d\n",
737 ((ha->ip_config.ipv6_vlan_tag >> 13) &
738 ISCSI_MAX_VLAN_PRIORITY));
739 break;
740 case ISCSI_NET_PARAM_VLAN_ENABLED:
741 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
742 len = sprintf(buf, "%s\n",
743 (ha->ip_config.ipv4_options &
744 IPOPT_VLAN_TAGGING_ENABLE) ?
745 "enabled" : "disabled");
746 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
747 len = sprintf(buf, "%s\n",
748 (ha->ip_config.ipv6_options &
749 IPV6_OPT_VLAN_TAGGING_ENABLE) ?
750 "enabled" : "disabled");
751 break;
752 case ISCSI_NET_PARAM_MTU:
753 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
754 break;
755 case ISCSI_NET_PARAM_PORT:
756 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
757 len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
758 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
759 len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
760 break;
761 default:
762 len = -ENOSYS;
763 }
764
765 return len;
766 }
767
768 static struct iscsi_endpoint *
qla4xxx_ep_connect(struct Scsi_Host * shost,struct sockaddr * dst_addr,int non_blocking)769 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
770 int non_blocking)
771 {
772 int ret;
773 struct iscsi_endpoint *ep;
774 struct qla_endpoint *qla_ep;
775 struct scsi_qla_host *ha;
776 struct sockaddr_in *addr;
777 struct sockaddr_in6 *addr6;
778
779 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
780 if (!shost) {
781 ret = -ENXIO;
782 printk(KERN_ERR "%s: shost is NULL\n",
783 __func__);
784 return ERR_PTR(ret);
785 }
786
787 ha = iscsi_host_priv(shost);
788
789 ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
790 if (!ep) {
791 ret = -ENOMEM;
792 return ERR_PTR(ret);
793 }
794
795 qla_ep = ep->dd_data;
796 memset(qla_ep, 0, sizeof(struct qla_endpoint));
797 if (dst_addr->sa_family == AF_INET) {
798 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
799 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
800 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
801 (char *)&addr->sin_addr));
802 } else if (dst_addr->sa_family == AF_INET6) {
803 memcpy(&qla_ep->dst_addr, dst_addr,
804 sizeof(struct sockaddr_in6));
805 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
806 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
807 (char *)&addr6->sin6_addr));
808 }
809
810 qla_ep->host = shost;
811
812 return ep;
813 }
814
qla4xxx_ep_poll(struct iscsi_endpoint * ep,int timeout_ms)815 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
816 {
817 struct qla_endpoint *qla_ep;
818 struct scsi_qla_host *ha;
819 int ret = 0;
820
821 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
822 qla_ep = ep->dd_data;
823 ha = to_qla_host(qla_ep->host);
824
825 if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
826 ret = 1;
827
828 return ret;
829 }
830
qla4xxx_ep_disconnect(struct iscsi_endpoint * ep)831 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
832 {
833 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
834 iscsi_destroy_endpoint(ep);
835 }
836
qla4xxx_get_ep_param(struct iscsi_endpoint * ep,enum iscsi_param param,char * buf)837 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
838 enum iscsi_param param,
839 char *buf)
840 {
841 struct qla_endpoint *qla_ep = ep->dd_data;
842 struct sockaddr *dst_addr;
843
844 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
845
846 switch (param) {
847 case ISCSI_PARAM_CONN_PORT:
848 case ISCSI_PARAM_CONN_ADDRESS:
849 if (!qla_ep)
850 return -ENOTCONN;
851
852 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
853 if (!dst_addr)
854 return -ENOTCONN;
855
856 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
857 &qla_ep->dst_addr, param, buf);
858 default:
859 return -ENOSYS;
860 }
861 }
862
qla4xxx_conn_get_stats(struct iscsi_cls_conn * cls_conn,struct iscsi_stats * stats)863 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
864 struct iscsi_stats *stats)
865 {
866 struct iscsi_session *sess;
867 struct iscsi_cls_session *cls_sess;
868 struct ddb_entry *ddb_entry;
869 struct scsi_qla_host *ha;
870 struct ql_iscsi_stats *ql_iscsi_stats;
871 int stats_size;
872 int ret;
873 dma_addr_t iscsi_stats_dma;
874
875 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
876
877 cls_sess = iscsi_conn_to_session(cls_conn);
878 sess = cls_sess->dd_data;
879 ddb_entry = sess->dd_data;
880 ha = ddb_entry->ha;
881
882 stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
883 /* Allocate memory */
884 ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
885 &iscsi_stats_dma, GFP_KERNEL);
886 if (!ql_iscsi_stats) {
887 ql4_printk(KERN_ERR, ha,
888 "Unable to allocate memory for iscsi stats\n");
889 goto exit_get_stats;
890 }
891
892 ret = qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
893 iscsi_stats_dma);
894 if (ret != QLA_SUCCESS) {
895 ql4_printk(KERN_ERR, ha,
896 "Unable to retrieve iscsi stats\n");
897 goto free_stats;
898 }
899
900 /* octets */
901 stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
902 stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
903 /* xmit pdus */
904 stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
905 stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
906 stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
907 stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
908 stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
909 stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
910 stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
911 stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
912 /* recv pdus */
913 stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
914 stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
915 stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
916 stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
917 stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
918 stats->logoutrsp_pdus =
919 le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
920 stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
921 stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
922 stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
923
924 free_stats:
925 dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
926 iscsi_stats_dma);
927 exit_get_stats:
928 return;
929 }
930
qla4xxx_eh_cmd_timed_out(struct scsi_cmnd * sc)931 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
932 {
933 struct iscsi_cls_session *session;
934 struct iscsi_session *sess;
935 unsigned long flags;
936 enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
937
938 session = starget_to_session(scsi_target(sc->device));
939 sess = session->dd_data;
940
941 spin_lock_irqsave(&session->lock, flags);
942 if (session->state == ISCSI_SESSION_FAILED)
943 ret = BLK_EH_RESET_TIMER;
944 spin_unlock_irqrestore(&session->lock, flags);
945
946 return ret;
947 }
948
qla4xxx_set_port_speed(struct Scsi_Host * shost)949 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
950 {
951 struct scsi_qla_host *ha = to_qla_host(shost);
952 struct iscsi_cls_host *ihost = shost->shost_data;
953 uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
954
955 qla4xxx_get_firmware_state(ha);
956
957 switch (ha->addl_fw_state & 0x0F00) {
958 case FW_ADDSTATE_LINK_SPEED_10MBPS:
959 speed = ISCSI_PORT_SPEED_10MBPS;
960 break;
961 case FW_ADDSTATE_LINK_SPEED_100MBPS:
962 speed = ISCSI_PORT_SPEED_100MBPS;
963 break;
964 case FW_ADDSTATE_LINK_SPEED_1GBPS:
965 speed = ISCSI_PORT_SPEED_1GBPS;
966 break;
967 case FW_ADDSTATE_LINK_SPEED_10GBPS:
968 speed = ISCSI_PORT_SPEED_10GBPS;
969 break;
970 }
971 ihost->port_speed = speed;
972 }
973
qla4xxx_set_port_state(struct Scsi_Host * shost)974 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
975 {
976 struct scsi_qla_host *ha = to_qla_host(shost);
977 struct iscsi_cls_host *ihost = shost->shost_data;
978 uint32_t state = ISCSI_PORT_STATE_DOWN;
979
980 if (test_bit(AF_LINK_UP, &ha->flags))
981 state = ISCSI_PORT_STATE_UP;
982
983 ihost->port_state = state;
984 }
985
qla4xxx_host_get_param(struct Scsi_Host * shost,enum iscsi_host_param param,char * buf)986 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
987 enum iscsi_host_param param, char *buf)
988 {
989 struct scsi_qla_host *ha = to_qla_host(shost);
990 int len;
991
992 switch (param) {
993 case ISCSI_HOST_PARAM_HWADDRESS:
994 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
995 break;
996 case ISCSI_HOST_PARAM_IPADDRESS:
997 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
998 break;
999 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1000 len = sprintf(buf, "%s\n", ha->name_string);
1001 break;
1002 case ISCSI_HOST_PARAM_PORT_STATE:
1003 qla4xxx_set_port_state(shost);
1004 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1005 break;
1006 case ISCSI_HOST_PARAM_PORT_SPEED:
1007 qla4xxx_set_port_speed(shost);
1008 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1009 break;
1010 default:
1011 return -ENOSYS;
1012 }
1013
1014 return len;
1015 }
1016
qla4xxx_create_ipv4_iface(struct scsi_qla_host * ha)1017 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1018 {
1019 if (ha->iface_ipv4)
1020 return;
1021
1022 /* IPv4 */
1023 ha->iface_ipv4 = iscsi_create_iface(ha->host,
1024 &qla4xxx_iscsi_transport,
1025 ISCSI_IFACE_TYPE_IPV4, 0, 0);
1026 if (!ha->iface_ipv4)
1027 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1028 "iface0.\n");
1029 }
1030
qla4xxx_create_ipv6_iface(struct scsi_qla_host * ha)1031 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1032 {
1033 if (!ha->iface_ipv6_0)
1034 /* IPv6 iface-0 */
1035 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1036 &qla4xxx_iscsi_transport,
1037 ISCSI_IFACE_TYPE_IPV6, 0,
1038 0);
1039 if (!ha->iface_ipv6_0)
1040 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1041 "iface0.\n");
1042
1043 if (!ha->iface_ipv6_1)
1044 /* IPv6 iface-1 */
1045 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1046 &qla4xxx_iscsi_transport,
1047 ISCSI_IFACE_TYPE_IPV6, 1,
1048 0);
1049 if (!ha->iface_ipv6_1)
1050 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1051 "iface1.\n");
1052 }
1053
qla4xxx_create_ifaces(struct scsi_qla_host * ha)1054 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1055 {
1056 if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1057 qla4xxx_create_ipv4_iface(ha);
1058
1059 if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1060 qla4xxx_create_ipv6_iface(ha);
1061 }
1062
qla4xxx_destroy_ipv4_iface(struct scsi_qla_host * ha)1063 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1064 {
1065 if (ha->iface_ipv4) {
1066 iscsi_destroy_iface(ha->iface_ipv4);
1067 ha->iface_ipv4 = NULL;
1068 }
1069 }
1070
qla4xxx_destroy_ipv6_iface(struct scsi_qla_host * ha)1071 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1072 {
1073 if (ha->iface_ipv6_0) {
1074 iscsi_destroy_iface(ha->iface_ipv6_0);
1075 ha->iface_ipv6_0 = NULL;
1076 }
1077 if (ha->iface_ipv6_1) {
1078 iscsi_destroy_iface(ha->iface_ipv6_1);
1079 ha->iface_ipv6_1 = NULL;
1080 }
1081 }
1082
qla4xxx_destroy_ifaces(struct scsi_qla_host * ha)1083 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1084 {
1085 qla4xxx_destroy_ipv4_iface(ha);
1086 qla4xxx_destroy_ipv6_iface(ha);
1087 }
1088
qla4xxx_set_ipv6(struct scsi_qla_host * ha,struct iscsi_iface_param_info * iface_param,struct addr_ctrl_blk * init_fw_cb)1089 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1090 struct iscsi_iface_param_info *iface_param,
1091 struct addr_ctrl_blk *init_fw_cb)
1092 {
1093 /*
1094 * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1095 * iface_num 1 is valid only for IPv6 Addr.
1096 */
1097 switch (iface_param->param) {
1098 case ISCSI_NET_PARAM_IPV6_ADDR:
1099 if (iface_param->iface_num & 0x1)
1100 /* IPv6 Addr 1 */
1101 memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1102 sizeof(init_fw_cb->ipv6_addr1));
1103 else
1104 /* IPv6 Addr 0 */
1105 memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1106 sizeof(init_fw_cb->ipv6_addr0));
1107 break;
1108 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1109 if (iface_param->iface_num & 0x1)
1110 break;
1111 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1112 sizeof(init_fw_cb->ipv6_if_id));
1113 break;
1114 case ISCSI_NET_PARAM_IPV6_ROUTER:
1115 if (iface_param->iface_num & 0x1)
1116 break;
1117 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1118 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1119 break;
1120 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1121 /* Autocfg applies to even interface */
1122 if (iface_param->iface_num & 0x1)
1123 break;
1124
1125 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1126 init_fw_cb->ipv6_addtl_opts &=
1127 cpu_to_le16(
1128 ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1129 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1130 init_fw_cb->ipv6_addtl_opts |=
1131 cpu_to_le16(
1132 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1133 else
1134 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1135 "IPv6 addr\n");
1136 break;
1137 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1138 /* Autocfg applies to even interface */
1139 if (iface_param->iface_num & 0x1)
1140 break;
1141
1142 if (iface_param->value[0] ==
1143 ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1144 init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1145 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1146 else if (iface_param->value[0] ==
1147 ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1148 init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1149 ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1150 else
1151 ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1152 "IPv6 linklocal addr\n");
1153 break;
1154 case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1155 /* Autocfg applies to even interface */
1156 if (iface_param->iface_num & 0x1)
1157 break;
1158
1159 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1160 memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1161 sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1162 break;
1163 case ISCSI_NET_PARAM_IFACE_ENABLE:
1164 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1165 init_fw_cb->ipv6_opts |=
1166 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1167 qla4xxx_create_ipv6_iface(ha);
1168 } else {
1169 init_fw_cb->ipv6_opts &=
1170 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1171 0xFFFF);
1172 qla4xxx_destroy_ipv6_iface(ha);
1173 }
1174 break;
1175 case ISCSI_NET_PARAM_VLAN_TAG:
1176 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1177 break;
1178 init_fw_cb->ipv6_vlan_tag =
1179 cpu_to_be16(*(uint16_t *)iface_param->value);
1180 break;
1181 case ISCSI_NET_PARAM_VLAN_ENABLED:
1182 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1183 init_fw_cb->ipv6_opts |=
1184 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1185 else
1186 init_fw_cb->ipv6_opts &=
1187 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1188 break;
1189 case ISCSI_NET_PARAM_MTU:
1190 init_fw_cb->eth_mtu_size =
1191 cpu_to_le16(*(uint16_t *)iface_param->value);
1192 break;
1193 case ISCSI_NET_PARAM_PORT:
1194 /* Autocfg applies to even interface */
1195 if (iface_param->iface_num & 0x1)
1196 break;
1197
1198 init_fw_cb->ipv6_port =
1199 cpu_to_le16(*(uint16_t *)iface_param->value);
1200 break;
1201 default:
1202 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1203 iface_param->param);
1204 break;
1205 }
1206 }
1207
qla4xxx_set_ipv4(struct scsi_qla_host * ha,struct iscsi_iface_param_info * iface_param,struct addr_ctrl_blk * init_fw_cb)1208 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1209 struct iscsi_iface_param_info *iface_param,
1210 struct addr_ctrl_blk *init_fw_cb)
1211 {
1212 switch (iface_param->param) {
1213 case ISCSI_NET_PARAM_IPV4_ADDR:
1214 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1215 sizeof(init_fw_cb->ipv4_addr));
1216 break;
1217 case ISCSI_NET_PARAM_IPV4_SUBNET:
1218 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1219 sizeof(init_fw_cb->ipv4_subnet));
1220 break;
1221 case ISCSI_NET_PARAM_IPV4_GW:
1222 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1223 sizeof(init_fw_cb->ipv4_gw_addr));
1224 break;
1225 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1226 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1227 init_fw_cb->ipv4_tcp_opts |=
1228 cpu_to_le16(TCPOPT_DHCP_ENABLE);
1229 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1230 init_fw_cb->ipv4_tcp_opts &=
1231 cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1232 else
1233 ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1234 break;
1235 case ISCSI_NET_PARAM_IFACE_ENABLE:
1236 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1237 init_fw_cb->ipv4_ip_opts |=
1238 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1239 qla4xxx_create_ipv4_iface(ha);
1240 } else {
1241 init_fw_cb->ipv4_ip_opts &=
1242 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1243 0xFFFF);
1244 qla4xxx_destroy_ipv4_iface(ha);
1245 }
1246 break;
1247 case ISCSI_NET_PARAM_VLAN_TAG:
1248 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1249 break;
1250 init_fw_cb->ipv4_vlan_tag =
1251 cpu_to_be16(*(uint16_t *)iface_param->value);
1252 break;
1253 case ISCSI_NET_PARAM_VLAN_ENABLED:
1254 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1255 init_fw_cb->ipv4_ip_opts |=
1256 cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1257 else
1258 init_fw_cb->ipv4_ip_opts &=
1259 cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1260 break;
1261 case ISCSI_NET_PARAM_MTU:
1262 init_fw_cb->eth_mtu_size =
1263 cpu_to_le16(*(uint16_t *)iface_param->value);
1264 break;
1265 case ISCSI_NET_PARAM_PORT:
1266 init_fw_cb->ipv4_port =
1267 cpu_to_le16(*(uint16_t *)iface_param->value);
1268 break;
1269 default:
1270 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1271 iface_param->param);
1272 break;
1273 }
1274 }
1275
1276 static void
qla4xxx_initcb_to_acb(struct addr_ctrl_blk * init_fw_cb)1277 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1278 {
1279 struct addr_ctrl_blk_def *acb;
1280 acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1281 memset(acb->reserved1, 0, sizeof(acb->reserved1));
1282 memset(acb->reserved2, 0, sizeof(acb->reserved2));
1283 memset(acb->reserved3, 0, sizeof(acb->reserved3));
1284 memset(acb->reserved4, 0, sizeof(acb->reserved4));
1285 memset(acb->reserved5, 0, sizeof(acb->reserved5));
1286 memset(acb->reserved6, 0, sizeof(acb->reserved6));
1287 memset(acb->reserved7, 0, sizeof(acb->reserved7));
1288 memset(acb->reserved8, 0, sizeof(acb->reserved8));
1289 memset(acb->reserved9, 0, sizeof(acb->reserved9));
1290 memset(acb->reserved10, 0, sizeof(acb->reserved10));
1291 memset(acb->reserved11, 0, sizeof(acb->reserved11));
1292 memset(acb->reserved12, 0, sizeof(acb->reserved12));
1293 memset(acb->reserved13, 0, sizeof(acb->reserved13));
1294 memset(acb->reserved14, 0, sizeof(acb->reserved14));
1295 memset(acb->reserved15, 0, sizeof(acb->reserved15));
1296 }
1297
1298 static int
qla4xxx_iface_set_param(struct Scsi_Host * shost,void * data,uint32_t len)1299 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1300 {
1301 struct scsi_qla_host *ha = to_qla_host(shost);
1302 int rval = 0;
1303 struct iscsi_iface_param_info *iface_param = NULL;
1304 struct addr_ctrl_blk *init_fw_cb = NULL;
1305 dma_addr_t init_fw_cb_dma;
1306 uint32_t mbox_cmd[MBOX_REG_COUNT];
1307 uint32_t mbox_sts[MBOX_REG_COUNT];
1308 uint32_t rem = len;
1309 struct nlattr *attr;
1310
1311 init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1312 sizeof(struct addr_ctrl_blk),
1313 &init_fw_cb_dma, GFP_KERNEL);
1314 if (!init_fw_cb) {
1315 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1316 __func__);
1317 return -ENOMEM;
1318 }
1319
1320 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1321 memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1322 memset(&mbox_sts, 0, sizeof(mbox_sts));
1323
1324 if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1325 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1326 rval = -EIO;
1327 goto exit_init_fw_cb;
1328 }
1329
1330 nla_for_each_attr(attr, data, len, rem) {
1331 iface_param = nla_data(attr);
1332
1333 if (iface_param->param_type != ISCSI_NET_PARAM)
1334 continue;
1335
1336 switch (iface_param->iface_type) {
1337 case ISCSI_IFACE_TYPE_IPV4:
1338 switch (iface_param->iface_num) {
1339 case 0:
1340 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1341 break;
1342 default:
1343 /* Cannot have more than one IPv4 interface */
1344 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1345 "number = %d\n",
1346 iface_param->iface_num);
1347 break;
1348 }
1349 break;
1350 case ISCSI_IFACE_TYPE_IPV6:
1351 switch (iface_param->iface_num) {
1352 case 0:
1353 case 1:
1354 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1355 break;
1356 default:
1357 /* Cannot have more than two IPv6 interface */
1358 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1359 "number = %d\n",
1360 iface_param->iface_num);
1361 break;
1362 }
1363 break;
1364 default:
1365 ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1366 break;
1367 }
1368 }
1369
1370 init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1371
1372 rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1373 sizeof(struct addr_ctrl_blk),
1374 FLASH_OPT_RMW_COMMIT);
1375 if (rval != QLA_SUCCESS) {
1376 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1377 __func__);
1378 rval = -EIO;
1379 goto exit_init_fw_cb;
1380 }
1381
1382 rval = qla4xxx_disable_acb(ha);
1383 if (rval != QLA_SUCCESS) {
1384 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1385 __func__);
1386 rval = -EIO;
1387 goto exit_init_fw_cb;
1388 }
1389
1390 wait_for_completion_timeout(&ha->disable_acb_comp,
1391 DISABLE_ACB_TOV * HZ);
1392
1393 qla4xxx_initcb_to_acb(init_fw_cb);
1394
1395 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1396 if (rval != QLA_SUCCESS) {
1397 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1398 __func__);
1399 rval = -EIO;
1400 goto exit_init_fw_cb;
1401 }
1402
1403 memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1404 qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1405 init_fw_cb_dma);
1406
1407 exit_init_fw_cb:
1408 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1409 init_fw_cb, init_fw_cb_dma);
1410
1411 return rval;
1412 }
1413
qla4xxx_session_get_param(struct iscsi_cls_session * cls_sess,enum iscsi_param param,char * buf)1414 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1415 enum iscsi_param param, char *buf)
1416 {
1417 struct iscsi_session *sess = cls_sess->dd_data;
1418 struct ddb_entry *ddb_entry = sess->dd_data;
1419 struct scsi_qla_host *ha = ddb_entry->ha;
1420 int rval, len;
1421 uint16_t idx;
1422
1423 switch (param) {
1424 case ISCSI_PARAM_CHAP_IN_IDX:
1425 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1426 sess->password_in, BIDI_CHAP,
1427 &idx);
1428 if (rval)
1429 len = sprintf(buf, "\n");
1430 else
1431 len = sprintf(buf, "%hu\n", idx);
1432 break;
1433 case ISCSI_PARAM_CHAP_OUT_IDX:
1434 rval = qla4xxx_get_chap_index(ha, sess->username,
1435 sess->password, LOCAL_CHAP,
1436 &idx);
1437 if (rval)
1438 len = sprintf(buf, "\n");
1439 else
1440 len = sprintf(buf, "%hu\n", idx);
1441 break;
1442 default:
1443 return iscsi_session_get_param(cls_sess, param, buf);
1444 }
1445
1446 return len;
1447 }
1448
qla4xxx_conn_get_param(struct iscsi_cls_conn * cls_conn,enum iscsi_param param,char * buf)1449 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1450 enum iscsi_param param, char *buf)
1451 {
1452 struct iscsi_conn *conn;
1453 struct qla_conn *qla_conn;
1454 struct sockaddr *dst_addr;
1455 int len = 0;
1456
1457 conn = cls_conn->dd_data;
1458 qla_conn = conn->dd_data;
1459 dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1460
1461 switch (param) {
1462 case ISCSI_PARAM_CONN_PORT:
1463 case ISCSI_PARAM_CONN_ADDRESS:
1464 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1465 dst_addr, param, buf);
1466 default:
1467 return iscsi_conn_get_param(cls_conn, param, buf);
1468 }
1469
1470 return len;
1471
1472 }
1473
qla4xxx_get_ddb_index(struct scsi_qla_host * ha,uint16_t * ddb_index)1474 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1475 {
1476 uint32_t mbx_sts = 0;
1477 uint16_t tmp_ddb_index;
1478 int ret;
1479
1480 get_ddb_index:
1481 tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1482
1483 if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1484 DEBUG2(ql4_printk(KERN_INFO, ha,
1485 "Free DDB index not available\n"));
1486 ret = QLA_ERROR;
1487 goto exit_get_ddb_index;
1488 }
1489
1490 if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1491 goto get_ddb_index;
1492
1493 DEBUG2(ql4_printk(KERN_INFO, ha,
1494 "Found a free DDB index at %d\n", tmp_ddb_index));
1495 ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1496 if (ret == QLA_ERROR) {
1497 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1498 ql4_printk(KERN_INFO, ha,
1499 "DDB index = %d not available trying next\n",
1500 tmp_ddb_index);
1501 goto get_ddb_index;
1502 }
1503 DEBUG2(ql4_printk(KERN_INFO, ha,
1504 "Free FW DDB not available\n"));
1505 }
1506
1507 *ddb_index = tmp_ddb_index;
1508
1509 exit_get_ddb_index:
1510 return ret;
1511 }
1512
qla4xxx_match_ipaddress(struct scsi_qla_host * ha,struct ddb_entry * ddb_entry,char * existing_ipaddr,char * user_ipaddr)1513 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1514 struct ddb_entry *ddb_entry,
1515 char *existing_ipaddr,
1516 char *user_ipaddr)
1517 {
1518 uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1519 char formatted_ipaddr[DDB_IPADDR_LEN];
1520 int status = QLA_SUCCESS, ret = 0;
1521
1522 if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1523 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1524 '\0', NULL);
1525 if (ret == 0) {
1526 status = QLA_ERROR;
1527 goto out_match;
1528 }
1529 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1530 } else {
1531 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1532 '\0', NULL);
1533 if (ret == 0) {
1534 status = QLA_ERROR;
1535 goto out_match;
1536 }
1537 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1538 }
1539
1540 if (strcmp(existing_ipaddr, formatted_ipaddr))
1541 status = QLA_ERROR;
1542
1543 out_match:
1544 return status;
1545 }
1546
qla4xxx_match_fwdb_session(struct scsi_qla_host * ha,struct iscsi_cls_conn * cls_conn)1547 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1548 struct iscsi_cls_conn *cls_conn)
1549 {
1550 int idx = 0, max_ddbs, rval;
1551 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1552 struct iscsi_session *sess, *existing_sess;
1553 struct iscsi_conn *conn, *existing_conn;
1554 struct ddb_entry *ddb_entry;
1555
1556 sess = cls_sess->dd_data;
1557 conn = cls_conn->dd_data;
1558
1559 if (sess->targetname == NULL ||
1560 conn->persistent_address == NULL ||
1561 conn->persistent_port == 0)
1562 return QLA_ERROR;
1563
1564 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1565 MAX_DEV_DB_ENTRIES;
1566
1567 for (idx = 0; idx < max_ddbs; idx++) {
1568 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1569 if (ddb_entry == NULL)
1570 continue;
1571
1572 if (ddb_entry->ddb_type != FLASH_DDB)
1573 continue;
1574
1575 existing_sess = ddb_entry->sess->dd_data;
1576 existing_conn = ddb_entry->conn->dd_data;
1577
1578 if (existing_sess->targetname == NULL ||
1579 existing_conn->persistent_address == NULL ||
1580 existing_conn->persistent_port == 0)
1581 continue;
1582
1583 DEBUG2(ql4_printk(KERN_INFO, ha,
1584 "IQN = %s User IQN = %s\n",
1585 existing_sess->targetname,
1586 sess->targetname));
1587
1588 DEBUG2(ql4_printk(KERN_INFO, ha,
1589 "IP = %s User IP = %s\n",
1590 existing_conn->persistent_address,
1591 conn->persistent_address));
1592
1593 DEBUG2(ql4_printk(KERN_INFO, ha,
1594 "Port = %d User Port = %d\n",
1595 existing_conn->persistent_port,
1596 conn->persistent_port));
1597
1598 if (strcmp(existing_sess->targetname, sess->targetname))
1599 continue;
1600 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1601 existing_conn->persistent_address,
1602 conn->persistent_address);
1603 if (rval == QLA_ERROR)
1604 continue;
1605 if (existing_conn->persistent_port != conn->persistent_port)
1606 continue;
1607 break;
1608 }
1609
1610 if (idx == max_ddbs)
1611 return QLA_ERROR;
1612
1613 DEBUG2(ql4_printk(KERN_INFO, ha,
1614 "Match found in fwdb sessions\n"));
1615 return QLA_SUCCESS;
1616 }
1617
1618 static struct iscsi_cls_session *
qla4xxx_session_create(struct iscsi_endpoint * ep,uint16_t cmds_max,uint16_t qdepth,uint32_t initial_cmdsn)1619 qla4xxx_session_create(struct iscsi_endpoint *ep,
1620 uint16_t cmds_max, uint16_t qdepth,
1621 uint32_t initial_cmdsn)
1622 {
1623 struct iscsi_cls_session *cls_sess;
1624 struct scsi_qla_host *ha;
1625 struct qla_endpoint *qla_ep;
1626 struct ddb_entry *ddb_entry;
1627 uint16_t ddb_index;
1628 struct iscsi_session *sess;
1629 struct sockaddr *dst_addr;
1630 int ret;
1631
1632 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1633 if (!ep) {
1634 printk(KERN_ERR "qla4xxx: missing ep.\n");
1635 return NULL;
1636 }
1637
1638 qla_ep = ep->dd_data;
1639 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1640 ha = to_qla_host(qla_ep->host);
1641
1642 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1643 if (ret == QLA_ERROR)
1644 return NULL;
1645
1646 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1647 cmds_max, sizeof(struct ddb_entry),
1648 sizeof(struct ql4_task_data),
1649 initial_cmdsn, ddb_index);
1650 if (!cls_sess)
1651 return NULL;
1652
1653 sess = cls_sess->dd_data;
1654 ddb_entry = sess->dd_data;
1655 ddb_entry->fw_ddb_index = ddb_index;
1656 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1657 ddb_entry->ha = ha;
1658 ddb_entry->sess = cls_sess;
1659 ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1660 ddb_entry->ddb_change = qla4xxx_ddb_change;
1661 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1662 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1663 ha->tot_ddbs++;
1664
1665 return cls_sess;
1666 }
1667
qla4xxx_session_destroy(struct iscsi_cls_session * cls_sess)1668 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1669 {
1670 struct iscsi_session *sess;
1671 struct ddb_entry *ddb_entry;
1672 struct scsi_qla_host *ha;
1673 unsigned long flags, wtime;
1674 struct dev_db_entry *fw_ddb_entry = NULL;
1675 dma_addr_t fw_ddb_entry_dma;
1676 uint32_t ddb_state;
1677 int ret;
1678
1679 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1680 sess = cls_sess->dd_data;
1681 ddb_entry = sess->dd_data;
1682 ha = ddb_entry->ha;
1683
1684 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1685 &fw_ddb_entry_dma, GFP_KERNEL);
1686 if (!fw_ddb_entry) {
1687 ql4_printk(KERN_ERR, ha,
1688 "%s: Unable to allocate dma buffer\n", __func__);
1689 goto destroy_session;
1690 }
1691
1692 wtime = jiffies + (HZ * LOGOUT_TOV);
1693 do {
1694 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1695 fw_ddb_entry, fw_ddb_entry_dma,
1696 NULL, NULL, &ddb_state, NULL,
1697 NULL, NULL);
1698 if (ret == QLA_ERROR)
1699 goto destroy_session;
1700
1701 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1702 (ddb_state == DDB_DS_SESSION_FAILED))
1703 goto destroy_session;
1704
1705 schedule_timeout_uninterruptible(HZ);
1706 } while ((time_after(wtime, jiffies)));
1707
1708 destroy_session:
1709 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1710
1711 spin_lock_irqsave(&ha->hardware_lock, flags);
1712 qla4xxx_free_ddb(ha, ddb_entry);
1713 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1714
1715 iscsi_session_teardown(cls_sess);
1716
1717 if (fw_ddb_entry)
1718 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1719 fw_ddb_entry, fw_ddb_entry_dma);
1720 }
1721
1722 static struct iscsi_cls_conn *
qla4xxx_conn_create(struct iscsi_cls_session * cls_sess,uint32_t conn_idx)1723 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1724 {
1725 struct iscsi_cls_conn *cls_conn;
1726 struct iscsi_session *sess;
1727 struct ddb_entry *ddb_entry;
1728
1729 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1730 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1731 conn_idx);
1732 if (!cls_conn)
1733 return NULL;
1734
1735 sess = cls_sess->dd_data;
1736 ddb_entry = sess->dd_data;
1737 ddb_entry->conn = cls_conn;
1738
1739 return cls_conn;
1740 }
1741
qla4xxx_conn_bind(struct iscsi_cls_session * cls_session,struct iscsi_cls_conn * cls_conn,uint64_t transport_fd,int is_leading)1742 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1743 struct iscsi_cls_conn *cls_conn,
1744 uint64_t transport_fd, int is_leading)
1745 {
1746 struct iscsi_conn *conn;
1747 struct qla_conn *qla_conn;
1748 struct iscsi_endpoint *ep;
1749
1750 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1751
1752 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1753 return -EINVAL;
1754 ep = iscsi_lookup_endpoint(transport_fd);
1755 conn = cls_conn->dd_data;
1756 qla_conn = conn->dd_data;
1757 qla_conn->qla_ep = ep->dd_data;
1758 return 0;
1759 }
1760
qla4xxx_conn_start(struct iscsi_cls_conn * cls_conn)1761 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1762 {
1763 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1764 struct iscsi_session *sess;
1765 struct ddb_entry *ddb_entry;
1766 struct scsi_qla_host *ha;
1767 struct dev_db_entry *fw_ddb_entry = NULL;
1768 dma_addr_t fw_ddb_entry_dma;
1769 uint32_t mbx_sts = 0;
1770 int ret = 0;
1771 int status = QLA_SUCCESS;
1772
1773 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1774 sess = cls_sess->dd_data;
1775 ddb_entry = sess->dd_data;
1776 ha = ddb_entry->ha;
1777
1778 /* Check if we have matching FW DDB, if yes then do not
1779 * login to this target. This could cause target to logout previous
1780 * connection
1781 */
1782 ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1783 if (ret == QLA_SUCCESS) {
1784 ql4_printk(KERN_INFO, ha,
1785 "Session already exist in FW.\n");
1786 ret = -EEXIST;
1787 goto exit_conn_start;
1788 }
1789
1790 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1791 &fw_ddb_entry_dma, GFP_KERNEL);
1792 if (!fw_ddb_entry) {
1793 ql4_printk(KERN_ERR, ha,
1794 "%s: Unable to allocate dma buffer\n", __func__);
1795 ret = -ENOMEM;
1796 goto exit_conn_start;
1797 }
1798
1799 ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1800 if (ret) {
1801 /* If iscsid is stopped and started then no need to do
1802 * set param again since ddb state will be already
1803 * active and FW does not allow set ddb to an
1804 * active session.
1805 */
1806 if (mbx_sts)
1807 if (ddb_entry->fw_ddb_device_state ==
1808 DDB_DS_SESSION_ACTIVE) {
1809 ddb_entry->unblock_sess(ddb_entry->sess);
1810 goto exit_set_param;
1811 }
1812
1813 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1814 __func__, ddb_entry->fw_ddb_index);
1815 goto exit_conn_start;
1816 }
1817
1818 status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1819 if (status == QLA_ERROR) {
1820 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1821 sess->targetname);
1822 ret = -EINVAL;
1823 goto exit_conn_start;
1824 }
1825
1826 if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1827 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1828
1829 DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1830 ddb_entry->fw_ddb_device_state));
1831
1832 exit_set_param:
1833 ret = 0;
1834
1835 exit_conn_start:
1836 if (fw_ddb_entry)
1837 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1838 fw_ddb_entry, fw_ddb_entry_dma);
1839 return ret;
1840 }
1841
qla4xxx_conn_destroy(struct iscsi_cls_conn * cls_conn)1842 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1843 {
1844 struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1845 struct iscsi_session *sess;
1846 struct scsi_qla_host *ha;
1847 struct ddb_entry *ddb_entry;
1848 int options;
1849
1850 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1851 sess = cls_sess->dd_data;
1852 ddb_entry = sess->dd_data;
1853 ha = ddb_entry->ha;
1854
1855 options = LOGOUT_OPTION_CLOSE_SESSION;
1856 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1857 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1858 }
1859
qla4xxx_task_work(struct work_struct * wdata)1860 static void qla4xxx_task_work(struct work_struct *wdata)
1861 {
1862 struct ql4_task_data *task_data;
1863 struct scsi_qla_host *ha;
1864 struct passthru_status *sts;
1865 struct iscsi_task *task;
1866 struct iscsi_hdr *hdr;
1867 uint8_t *data;
1868 uint32_t data_len;
1869 struct iscsi_conn *conn;
1870 int hdr_len;
1871 itt_t itt;
1872
1873 task_data = container_of(wdata, struct ql4_task_data, task_work);
1874 ha = task_data->ha;
1875 task = task_data->task;
1876 sts = &task_data->sts;
1877 hdr_len = sizeof(struct iscsi_hdr);
1878
1879 DEBUG3(printk(KERN_INFO "Status returned\n"));
1880 DEBUG3(qla4xxx_dump_buffer(sts, 64));
1881 DEBUG3(printk(KERN_INFO "Response buffer"));
1882 DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1883
1884 conn = task->conn;
1885
1886 switch (sts->completionStatus) {
1887 case PASSTHRU_STATUS_COMPLETE:
1888 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1889 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1890 itt = sts->handle;
1891 hdr->itt = itt;
1892 data = task_data->resp_buffer + hdr_len;
1893 data_len = task_data->resp_len - hdr_len;
1894 iscsi_complete_pdu(conn, hdr, data, data_len);
1895 break;
1896 default:
1897 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1898 sts->completionStatus);
1899 break;
1900 }
1901 return;
1902 }
1903
qla4xxx_alloc_pdu(struct iscsi_task * task,uint8_t opcode)1904 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1905 {
1906 struct ql4_task_data *task_data;
1907 struct iscsi_session *sess;
1908 struct ddb_entry *ddb_entry;
1909 struct scsi_qla_host *ha;
1910 int hdr_len;
1911
1912 sess = task->conn->session;
1913 ddb_entry = sess->dd_data;
1914 ha = ddb_entry->ha;
1915 task_data = task->dd_data;
1916 memset(task_data, 0, sizeof(struct ql4_task_data));
1917
1918 if (task->sc) {
1919 ql4_printk(KERN_INFO, ha,
1920 "%s: SCSI Commands not implemented\n", __func__);
1921 return -EINVAL;
1922 }
1923
1924 hdr_len = sizeof(struct iscsi_hdr);
1925 task_data->ha = ha;
1926 task_data->task = task;
1927
1928 if (task->data_count) {
1929 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1930 task->data_count,
1931 PCI_DMA_TODEVICE);
1932 }
1933
1934 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1935 __func__, task->conn->max_recv_dlength, hdr_len));
1936
1937 task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1938 task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1939 task_data->resp_len,
1940 &task_data->resp_dma,
1941 GFP_ATOMIC);
1942 if (!task_data->resp_buffer)
1943 goto exit_alloc_pdu;
1944
1945 task_data->req_len = task->data_count + hdr_len;
1946 task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1947 task_data->req_len,
1948 &task_data->req_dma,
1949 GFP_ATOMIC);
1950 if (!task_data->req_buffer)
1951 goto exit_alloc_pdu;
1952
1953 task->hdr = task_data->req_buffer;
1954
1955 INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1956
1957 return 0;
1958
1959 exit_alloc_pdu:
1960 if (task_data->resp_buffer)
1961 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1962 task_data->resp_buffer, task_data->resp_dma);
1963
1964 if (task_data->req_buffer)
1965 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1966 task_data->req_buffer, task_data->req_dma);
1967 return -ENOMEM;
1968 }
1969
qla4xxx_task_cleanup(struct iscsi_task * task)1970 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1971 {
1972 struct ql4_task_data *task_data;
1973 struct iscsi_session *sess;
1974 struct ddb_entry *ddb_entry;
1975 struct scsi_qla_host *ha;
1976 int hdr_len;
1977
1978 hdr_len = sizeof(struct iscsi_hdr);
1979 sess = task->conn->session;
1980 ddb_entry = sess->dd_data;
1981 ha = ddb_entry->ha;
1982 task_data = task->dd_data;
1983
1984 if (task->data_count) {
1985 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1986 task->data_count, PCI_DMA_TODEVICE);
1987 }
1988
1989 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1990 __func__, task->conn->max_recv_dlength, hdr_len));
1991
1992 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1993 task_data->resp_buffer, task_data->resp_dma);
1994 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1995 task_data->req_buffer, task_data->req_dma);
1996 return;
1997 }
1998
qla4xxx_task_xmit(struct iscsi_task * task)1999 static int qla4xxx_task_xmit(struct iscsi_task *task)
2000 {
2001 struct scsi_cmnd *sc = task->sc;
2002 struct iscsi_session *sess = task->conn->session;
2003 struct ddb_entry *ddb_entry = sess->dd_data;
2004 struct scsi_qla_host *ha = ddb_entry->ha;
2005
2006 if (!sc)
2007 return qla4xxx_send_passthru0(task);
2008
2009 ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
2010 __func__);
2011 return -ENOSYS;
2012 }
2013
qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session * sess,struct iscsi_bus_flash_conn * conn,struct dev_db_entry * fw_ddb_entry)2014 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
2015 struct iscsi_bus_flash_conn *conn,
2016 struct dev_db_entry *fw_ddb_entry)
2017 {
2018 unsigned long options = 0;
2019 int rc = 0;
2020
2021 options = le16_to_cpu(fw_ddb_entry->options);
2022 conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2023 if (test_bit(OPT_IPV6_DEVICE, &options)) {
2024 rc = iscsi_switch_str_param(&sess->portal_type,
2025 PORTAL_TYPE_IPV6);
2026 if (rc)
2027 goto exit_copy;
2028 } else {
2029 rc = iscsi_switch_str_param(&sess->portal_type,
2030 PORTAL_TYPE_IPV4);
2031 if (rc)
2032 goto exit_copy;
2033 }
2034
2035 sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2036 &options);
2037 sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2038 sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
2039
2040 options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2041 conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2042 conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2043 sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2044 sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2045 sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2046 &options);
2047 sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2048 sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2049 conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
2050 sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2051 &options);
2052 sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2053 sess->discovery_auth_optional =
2054 test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2055 if (test_bit(ISCSIOPT_ERL1, &options))
2056 sess->erl |= BIT_1;
2057 if (test_bit(ISCSIOPT_ERL0, &options))
2058 sess->erl |= BIT_0;
2059
2060 options = le16_to_cpu(fw_ddb_entry->tcp_options);
2061 conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2062 conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2063 conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2064 if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2065 conn->tcp_timer_scale |= BIT_3;
2066 if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2067 conn->tcp_timer_scale |= BIT_2;
2068 if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2069 conn->tcp_timer_scale |= BIT_1;
2070
2071 conn->tcp_timer_scale >>= 1;
2072 conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2073
2074 options = le16_to_cpu(fw_ddb_entry->ip_options);
2075 conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2076
2077 conn->max_recv_dlength = BYTE_UNITS *
2078 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2079 conn->max_xmit_dlength = BYTE_UNITS *
2080 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2081 sess->first_burst = BYTE_UNITS *
2082 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2083 sess->max_burst = BYTE_UNITS *
2084 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2085 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2086 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2087 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2088 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2089 conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2090 conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2091 conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2092 conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
2093 conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
2094 conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2095 conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2096 conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2097 sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
2098 sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
2099 sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2100 sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2101
2102 sess->default_taskmgmt_timeout =
2103 le16_to_cpu(fw_ddb_entry->def_timeout);
2104 conn->port = le16_to_cpu(fw_ddb_entry->port);
2105
2106 options = le16_to_cpu(fw_ddb_entry->options);
2107 conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2108 if (!conn->ipaddress) {
2109 rc = -ENOMEM;
2110 goto exit_copy;
2111 }
2112
2113 conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2114 if (!conn->redirect_ipaddr) {
2115 rc = -ENOMEM;
2116 goto exit_copy;
2117 }
2118
2119 memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
2120 memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
2121
2122 if (test_bit(OPT_IPV6_DEVICE, &options)) {
2123 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
2124
2125 conn->link_local_ipv6_addr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2126 if (!conn->link_local_ipv6_addr) {
2127 rc = -ENOMEM;
2128 goto exit_copy;
2129 }
2130
2131 memcpy(conn->link_local_ipv6_addr,
2132 fw_ddb_entry->link_local_ipv6_addr, IPv6_ADDR_LEN);
2133 } else {
2134 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2135 }
2136
2137 if (fw_ddb_entry->iscsi_name[0]) {
2138 rc = iscsi_switch_str_param(&sess->targetname,
2139 (char *)fw_ddb_entry->iscsi_name);
2140 if (rc)
2141 goto exit_copy;
2142 }
2143
2144 if (fw_ddb_entry->iscsi_alias[0]) {
2145 rc = iscsi_switch_str_param(&sess->targetalias,
2146 (char *)fw_ddb_entry->iscsi_alias);
2147 if (rc)
2148 goto exit_copy;
2149 }
2150
2151 COPY_ISID(sess->isid, fw_ddb_entry->isid);
2152
2153 exit_copy:
2154 return rc;
2155 }
2156
qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session * sess,struct iscsi_bus_flash_conn * conn,struct dev_db_entry * fw_ddb_entry)2157 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
2158 struct iscsi_bus_flash_conn *conn,
2159 struct dev_db_entry *fw_ddb_entry)
2160 {
2161 uint16_t options;
2162 int rc = 0;
2163
2164 options = le16_to_cpu(fw_ddb_entry->options);
2165 SET_BITVAL(conn->is_fw_assigned_ipv6, options, BIT_11);
2166 if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2167 options |= BIT_8;
2168 else
2169 options &= ~BIT_8;
2170
2171 SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
2172 SET_BITVAL(sess->discovery_sess, options, BIT_4);
2173 SET_BITVAL(sess->entry_state, options, BIT_3);
2174 fw_ddb_entry->options = cpu_to_le16(options);
2175
2176 options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2177 SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
2178 SET_BITVAL(conn->datadgst_en, options, BIT_12);
2179 SET_BITVAL(sess->imm_data_en, options, BIT_11);
2180 SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
2181 SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
2182 SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
2183 SET_BITVAL(sess->chap_auth_en, options, BIT_7);
2184 SET_BITVAL(conn->snack_req_en, options, BIT_6);
2185 SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
2186 SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
2187 SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
2188 SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
2189 SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
2190 fw_ddb_entry->iscsi_options = cpu_to_le16(options);
2191
2192 options = le16_to_cpu(fw_ddb_entry->tcp_options);
2193 SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
2194 SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
2195 SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
2196 SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
2197 SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
2198 SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
2199 SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
2200 fw_ddb_entry->tcp_options = cpu_to_le16(options);
2201
2202 options = le16_to_cpu(fw_ddb_entry->ip_options);
2203 SET_BITVAL(conn->fragment_disable, options, BIT_4);
2204 fw_ddb_entry->ip_options = cpu_to_le16(options);
2205
2206 fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2207 fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2208 cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
2209 fw_ddb_entry->iscsi_max_snd_data_seg_len =
2210 cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
2211 fw_ddb_entry->iscsi_first_burst_len =
2212 cpu_to_le16(sess->first_burst / BYTE_UNITS);
2213 fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
2214 BYTE_UNITS);
2215 fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
2216 fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
2217 fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
2218 fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
2219 fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
2220 fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
2221 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
2222 fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
2223 fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
2224 fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
2225 fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
2226 fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
2227 fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_type);
2228 fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
2229 fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
2230 fw_ddb_entry->port = cpu_to_le16(conn->port);
2231 fw_ddb_entry->def_timeout =
2232 cpu_to_le16(sess->default_taskmgmt_timeout);
2233
2234 if (conn->ipaddress)
2235 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
2236 sizeof(fw_ddb_entry->ip_addr));
2237
2238 if (conn->redirect_ipaddr)
2239 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
2240 sizeof(fw_ddb_entry->tgt_addr));
2241
2242 if (conn->link_local_ipv6_addr)
2243 memcpy(fw_ddb_entry->link_local_ipv6_addr,
2244 conn->link_local_ipv6_addr,
2245 sizeof(fw_ddb_entry->link_local_ipv6_addr));
2246
2247 if (sess->targetname)
2248 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2249 sizeof(fw_ddb_entry->iscsi_name));
2250
2251 if (sess->targetalias)
2252 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
2253 sizeof(fw_ddb_entry->iscsi_alias));
2254
2255 COPY_ISID(fw_ddb_entry->isid, sess->isid);
2256
2257 return rc;
2258 }
2259
qla4xxx_copy_fwddb_param(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry,struct iscsi_cls_session * cls_sess,struct iscsi_cls_conn * cls_conn)2260 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
2261 struct dev_db_entry *fw_ddb_entry,
2262 struct iscsi_cls_session *cls_sess,
2263 struct iscsi_cls_conn *cls_conn)
2264 {
2265 int buflen = 0;
2266 struct iscsi_session *sess;
2267 struct ddb_entry *ddb_entry;
2268 struct iscsi_conn *conn;
2269 char ip_addr[DDB_IPADDR_LEN];
2270 uint16_t options = 0;
2271
2272 sess = cls_sess->dd_data;
2273 ddb_entry = sess->dd_data;
2274 conn = cls_conn->dd_data;
2275
2276 ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2277
2278 conn->max_recv_dlength = BYTE_UNITS *
2279 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2280
2281 conn->max_xmit_dlength = BYTE_UNITS *
2282 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2283
2284 sess->initial_r2t_en =
2285 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2286
2287 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2288
2289 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2290
2291 sess->first_burst = BYTE_UNITS *
2292 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2293
2294 sess->max_burst = BYTE_UNITS *
2295 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2296
2297 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2298
2299 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2300
2301 conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
2302
2303 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2304
2305 options = le16_to_cpu(fw_ddb_entry->options);
2306 if (options & DDB_OPT_IPV6_DEVICE)
2307 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
2308 else
2309 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
2310
2311 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
2312 (char *)fw_ddb_entry->iscsi_name, buflen);
2313 iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
2314 (char *)ha->name_string, buflen);
2315 iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
2316 (char *)ip_addr, buflen);
2317 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2318 (char *)fw_ddb_entry->iscsi_alias, buflen);
2319 }
2320
qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host * ha,struct ddb_entry * ddb_entry)2321 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
2322 struct ddb_entry *ddb_entry)
2323 {
2324 struct iscsi_cls_session *cls_sess;
2325 struct iscsi_cls_conn *cls_conn;
2326 uint32_t ddb_state;
2327 dma_addr_t fw_ddb_entry_dma;
2328 struct dev_db_entry *fw_ddb_entry;
2329
2330 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2331 &fw_ddb_entry_dma, GFP_KERNEL);
2332 if (!fw_ddb_entry) {
2333 ql4_printk(KERN_ERR, ha,
2334 "%s: Unable to allocate dma buffer\n", __func__);
2335 goto exit_session_conn_fwddb_param;
2336 }
2337
2338 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2339 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2340 NULL, NULL, NULL) == QLA_ERROR) {
2341 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2342 "get_ddb_entry for fw_ddb_index %d\n",
2343 ha->host_no, __func__,
2344 ddb_entry->fw_ddb_index));
2345 goto exit_session_conn_fwddb_param;
2346 }
2347
2348 cls_sess = ddb_entry->sess;
2349
2350 cls_conn = ddb_entry->conn;
2351
2352 /* Update params */
2353 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2354
2355 exit_session_conn_fwddb_param:
2356 if (fw_ddb_entry)
2357 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2358 fw_ddb_entry, fw_ddb_entry_dma);
2359 }
2360
qla4xxx_update_session_conn_param(struct scsi_qla_host * ha,struct ddb_entry * ddb_entry)2361 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2362 struct ddb_entry *ddb_entry)
2363 {
2364 struct iscsi_cls_session *cls_sess;
2365 struct iscsi_cls_conn *cls_conn;
2366 struct iscsi_session *sess;
2367 struct iscsi_conn *conn;
2368 uint32_t ddb_state;
2369 dma_addr_t fw_ddb_entry_dma;
2370 struct dev_db_entry *fw_ddb_entry;
2371
2372 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2373 &fw_ddb_entry_dma, GFP_KERNEL);
2374 if (!fw_ddb_entry) {
2375 ql4_printk(KERN_ERR, ha,
2376 "%s: Unable to allocate dma buffer\n", __func__);
2377 goto exit_session_conn_param;
2378 }
2379
2380 if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2381 fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2382 NULL, NULL, NULL) == QLA_ERROR) {
2383 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2384 "get_ddb_entry for fw_ddb_index %d\n",
2385 ha->host_no, __func__,
2386 ddb_entry->fw_ddb_index));
2387 goto exit_session_conn_param;
2388 }
2389
2390 cls_sess = ddb_entry->sess;
2391 sess = cls_sess->dd_data;
2392
2393 cls_conn = ddb_entry->conn;
2394 conn = cls_conn->dd_data;
2395
2396 /* Update timers after login */
2397 ddb_entry->default_relogin_timeout =
2398 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2399 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2400 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2401 ddb_entry->default_time2wait =
2402 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2403
2404 /* Update params */
2405 ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2406 conn->max_recv_dlength = BYTE_UNITS *
2407 le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2408
2409 conn->max_xmit_dlength = BYTE_UNITS *
2410 le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2411
2412 sess->initial_r2t_en =
2413 (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2414
2415 sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2416
2417 sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2418
2419 sess->first_burst = BYTE_UNITS *
2420 le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2421
2422 sess->max_burst = BYTE_UNITS *
2423 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2424
2425 sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2426
2427 sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2428
2429 sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2430
2431 memcpy(sess->initiatorname, ha->name_string,
2432 min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2433
2434 iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2435 (char *)fw_ddb_entry->iscsi_alias, 0);
2436
2437 exit_session_conn_param:
2438 if (fw_ddb_entry)
2439 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2440 fw_ddb_entry, fw_ddb_entry_dma);
2441 }
2442
2443 /*
2444 * Timer routines
2445 */
2446
qla4xxx_start_timer(struct scsi_qla_host * ha,void * func,unsigned long interval)2447 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2448 unsigned long interval)
2449 {
2450 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2451 __func__, ha->host->host_no));
2452 init_timer(&ha->timer);
2453 ha->timer.expires = jiffies + interval * HZ;
2454 ha->timer.data = (unsigned long)ha;
2455 ha->timer.function = (void (*)(unsigned long))func;
2456 add_timer(&ha->timer);
2457 ha->timer_active = 1;
2458 }
2459
qla4xxx_stop_timer(struct scsi_qla_host * ha)2460 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2461 {
2462 del_timer_sync(&ha->timer);
2463 ha->timer_active = 0;
2464 }
2465
2466 /***
2467 * qla4xxx_mark_device_missing - blocks the session
2468 * @cls_session: Pointer to the session to be blocked
2469 * @ddb_entry: Pointer to device database entry
2470 *
2471 * This routine marks a device missing and close connection.
2472 **/
qla4xxx_mark_device_missing(struct iscsi_cls_session * cls_session)2473 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2474 {
2475 iscsi_block_session(cls_session);
2476 }
2477
2478 /**
2479 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2480 * @ha: Pointer to host adapter structure.
2481 *
2482 * This routine marks a device missing and resets the relogin retry count.
2483 **/
qla4xxx_mark_all_devices_missing(struct scsi_qla_host * ha)2484 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2485 {
2486 iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2487 }
2488
qla4xxx_get_new_srb(struct scsi_qla_host * ha,struct ddb_entry * ddb_entry,struct scsi_cmnd * cmd)2489 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2490 struct ddb_entry *ddb_entry,
2491 struct scsi_cmnd *cmd)
2492 {
2493 struct srb *srb;
2494
2495 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2496 if (!srb)
2497 return srb;
2498
2499 kref_init(&srb->srb_ref);
2500 srb->ha = ha;
2501 srb->ddb = ddb_entry;
2502 srb->cmd = cmd;
2503 srb->flags = 0;
2504 CMD_SP(cmd) = (void *)srb;
2505
2506 return srb;
2507 }
2508
qla4xxx_srb_free_dma(struct scsi_qla_host * ha,struct srb * srb)2509 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2510 {
2511 struct scsi_cmnd *cmd = srb->cmd;
2512
2513 if (srb->flags & SRB_DMA_VALID) {
2514 scsi_dma_unmap(cmd);
2515 srb->flags &= ~SRB_DMA_VALID;
2516 }
2517 CMD_SP(cmd) = NULL;
2518 }
2519
qla4xxx_srb_compl(struct kref * ref)2520 void qla4xxx_srb_compl(struct kref *ref)
2521 {
2522 struct srb *srb = container_of(ref, struct srb, srb_ref);
2523 struct scsi_cmnd *cmd = srb->cmd;
2524 struct scsi_qla_host *ha = srb->ha;
2525
2526 qla4xxx_srb_free_dma(ha, srb);
2527
2528 mempool_free(srb, ha->srb_mempool);
2529
2530 cmd->scsi_done(cmd);
2531 }
2532
2533 /**
2534 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2535 * @host: scsi host
2536 * @cmd: Pointer to Linux's SCSI command structure
2537 *
2538 * Remarks:
2539 * This routine is invoked by Linux to send a SCSI command to the driver.
2540 * The mid-level driver tries to ensure that queuecommand never gets
2541 * invoked concurrently with itself or the interrupt handler (although
2542 * the interrupt handler may call this routine as part of request-
2543 * completion handling). Unfortunely, it sometimes calls the scheduler
2544 * in interrupt context which is a big NO! NO!.
2545 **/
qla4xxx_queuecommand(struct Scsi_Host * host,struct scsi_cmnd * cmd)2546 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2547 {
2548 struct scsi_qla_host *ha = to_qla_host(host);
2549 struct ddb_entry *ddb_entry = cmd->device->hostdata;
2550 struct iscsi_cls_session *sess = ddb_entry->sess;
2551 struct srb *srb;
2552 int rval;
2553
2554 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2555 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2556 cmd->result = DID_NO_CONNECT << 16;
2557 else
2558 cmd->result = DID_REQUEUE << 16;
2559 goto qc_fail_command;
2560 }
2561
2562 if (!sess) {
2563 cmd->result = DID_IMM_RETRY << 16;
2564 goto qc_fail_command;
2565 }
2566
2567 rval = iscsi_session_chkready(sess);
2568 if (rval) {
2569 cmd->result = rval;
2570 goto qc_fail_command;
2571 }
2572
2573 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2574 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2575 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2576 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2577 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2578 !test_bit(AF_ONLINE, &ha->flags) ||
2579 !test_bit(AF_LINK_UP, &ha->flags) ||
2580 test_bit(AF_LOOPBACK, &ha->flags) ||
2581 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2582 goto qc_host_busy;
2583
2584 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2585 if (!srb)
2586 goto qc_host_busy;
2587
2588 rval = qla4xxx_send_command_to_isp(ha, srb);
2589 if (rval != QLA_SUCCESS)
2590 goto qc_host_busy_free_sp;
2591
2592 return 0;
2593
2594 qc_host_busy_free_sp:
2595 qla4xxx_srb_free_dma(ha, srb);
2596 mempool_free(srb, ha->srb_mempool);
2597
2598 qc_host_busy:
2599 return SCSI_MLQUEUE_HOST_BUSY;
2600
2601 qc_fail_command:
2602 cmd->scsi_done(cmd);
2603
2604 return 0;
2605 }
2606
2607 /**
2608 * qla4xxx_mem_free - frees memory allocated to adapter
2609 * @ha: Pointer to host adapter structure.
2610 *
2611 * Frees memory previously allocated by qla4xxx_mem_alloc
2612 **/
qla4xxx_mem_free(struct scsi_qla_host * ha)2613 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2614 {
2615 if (ha->queues)
2616 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2617 ha->queues_dma);
2618
2619 if (ha->fw_dump)
2620 vfree(ha->fw_dump);
2621
2622 ha->queues_len = 0;
2623 ha->queues = NULL;
2624 ha->queues_dma = 0;
2625 ha->request_ring = NULL;
2626 ha->request_dma = 0;
2627 ha->response_ring = NULL;
2628 ha->response_dma = 0;
2629 ha->shadow_regs = NULL;
2630 ha->shadow_regs_dma = 0;
2631 ha->fw_dump = NULL;
2632 ha->fw_dump_size = 0;
2633
2634 /* Free srb pool. */
2635 if (ha->srb_mempool)
2636 mempool_destroy(ha->srb_mempool);
2637
2638 ha->srb_mempool = NULL;
2639
2640 if (ha->chap_dma_pool)
2641 dma_pool_destroy(ha->chap_dma_pool);
2642
2643 if (ha->chap_list)
2644 vfree(ha->chap_list);
2645 ha->chap_list = NULL;
2646
2647 if (ha->fw_ddb_dma_pool)
2648 dma_pool_destroy(ha->fw_ddb_dma_pool);
2649
2650 /* release io space registers */
2651 if (is_qla8022(ha)) {
2652 if (ha->nx_pcibase)
2653 iounmap(
2654 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2655 } else if (is_qla8032(ha)) {
2656 if (ha->nx_pcibase)
2657 iounmap(
2658 (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2659 } else if (ha->reg) {
2660 iounmap(ha->reg);
2661 }
2662
2663 if (ha->reset_tmplt.buff)
2664 vfree(ha->reset_tmplt.buff);
2665
2666 pci_release_regions(ha->pdev);
2667 }
2668
2669 /**
2670 * qla4xxx_mem_alloc - allocates memory for use by adapter.
2671 * @ha: Pointer to host adapter structure
2672 *
2673 * Allocates DMA memory for request and response queues. Also allocates memory
2674 * for srbs.
2675 **/
qla4xxx_mem_alloc(struct scsi_qla_host * ha)2676 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2677 {
2678 unsigned long align;
2679
2680 /* Allocate contiguous block of DMA memory for queues. */
2681 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2682 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2683 sizeof(struct shadow_regs) +
2684 MEM_ALIGN_VALUE +
2685 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2686 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2687 &ha->queues_dma, GFP_KERNEL);
2688 if (ha->queues == NULL) {
2689 ql4_printk(KERN_WARNING, ha,
2690 "Memory Allocation failed - queues.\n");
2691
2692 goto mem_alloc_error_exit;
2693 }
2694 memset(ha->queues, 0, ha->queues_len);
2695
2696 /*
2697 * As per RISC alignment requirements -- the bus-address must be a
2698 * multiple of the request-ring size (in bytes).
2699 */
2700 align = 0;
2701 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2702 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2703 (MEM_ALIGN_VALUE - 1));
2704
2705 /* Update request and response queue pointers. */
2706 ha->request_dma = ha->queues_dma + align;
2707 ha->request_ring = (struct queue_entry *) (ha->queues + align);
2708 ha->response_dma = ha->queues_dma + align +
2709 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2710 ha->response_ring = (struct queue_entry *) (ha->queues + align +
2711 (REQUEST_QUEUE_DEPTH *
2712 QUEUE_SIZE));
2713 ha->shadow_regs_dma = ha->queues_dma + align +
2714 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2715 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2716 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2717 (REQUEST_QUEUE_DEPTH *
2718 QUEUE_SIZE) +
2719 (RESPONSE_QUEUE_DEPTH *
2720 QUEUE_SIZE));
2721
2722 /* Allocate memory for srb pool. */
2723 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2724 mempool_free_slab, srb_cachep);
2725 if (ha->srb_mempool == NULL) {
2726 ql4_printk(KERN_WARNING, ha,
2727 "Memory Allocation failed - SRB Pool.\n");
2728
2729 goto mem_alloc_error_exit;
2730 }
2731
2732 ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2733 CHAP_DMA_BLOCK_SIZE, 8, 0);
2734
2735 if (ha->chap_dma_pool == NULL) {
2736 ql4_printk(KERN_WARNING, ha,
2737 "%s: chap_dma_pool allocation failed..\n", __func__);
2738 goto mem_alloc_error_exit;
2739 }
2740
2741 ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2742 DDB_DMA_BLOCK_SIZE, 8, 0);
2743
2744 if (ha->fw_ddb_dma_pool == NULL) {
2745 ql4_printk(KERN_WARNING, ha,
2746 "%s: fw_ddb_dma_pool allocation failed..\n",
2747 __func__);
2748 goto mem_alloc_error_exit;
2749 }
2750
2751 return QLA_SUCCESS;
2752
2753 mem_alloc_error_exit:
2754 qla4xxx_mem_free(ha);
2755 return QLA_ERROR;
2756 }
2757
2758 /**
2759 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2760 * @ha: adapter block pointer.
2761 *
2762 * Note: The caller should not hold the idc lock.
2763 **/
qla4_8xxx_check_temp(struct scsi_qla_host * ha)2764 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2765 {
2766 uint32_t temp, temp_state, temp_val;
2767 int status = QLA_SUCCESS;
2768
2769 temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2770
2771 temp_state = qla82xx_get_temp_state(temp);
2772 temp_val = qla82xx_get_temp_val(temp);
2773
2774 if (temp_state == QLA82XX_TEMP_PANIC) {
2775 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2776 " exceeds maximum allowed. Hardware has been shut"
2777 " down.\n", temp_val);
2778 status = QLA_ERROR;
2779 } else if (temp_state == QLA82XX_TEMP_WARN) {
2780 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2781 ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2782 " degrees C exceeds operating range."
2783 " Immediate action needed.\n", temp_val);
2784 } else {
2785 if (ha->temperature == QLA82XX_TEMP_WARN)
2786 ql4_printk(KERN_INFO, ha, "Device temperature is"
2787 " now %d degrees C in normal range.\n",
2788 temp_val);
2789 }
2790 ha->temperature = temp_state;
2791 return status;
2792 }
2793
2794 /**
2795 * qla4_8xxx_check_fw_alive - Check firmware health
2796 * @ha: Pointer to host adapter structure.
2797 *
2798 * Context: Interrupt
2799 **/
qla4_8xxx_check_fw_alive(struct scsi_qla_host * ha)2800 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2801 {
2802 uint32_t fw_heartbeat_counter;
2803 int status = QLA_SUCCESS;
2804
2805 fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2806 QLA8XXX_PEG_ALIVE_COUNTER);
2807 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2808 if (fw_heartbeat_counter == 0xffffffff) {
2809 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2810 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2811 ha->host_no, __func__));
2812 return status;
2813 }
2814
2815 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2816 ha->seconds_since_last_heartbeat++;
2817 /* FW not alive after 2 seconds */
2818 if (ha->seconds_since_last_heartbeat == 2) {
2819 ha->seconds_since_last_heartbeat = 0;
2820 qla4_8xxx_dump_peg_reg(ha);
2821 status = QLA_ERROR;
2822 }
2823 } else
2824 ha->seconds_since_last_heartbeat = 0;
2825
2826 ha->fw_heartbeat_counter = fw_heartbeat_counter;
2827 return status;
2828 }
2829
qla4_8xxx_process_fw_error(struct scsi_qla_host * ha)2830 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2831 {
2832 uint32_t halt_status;
2833 int halt_status_unrecoverable = 0;
2834
2835 halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2836
2837 if (is_qla8022(ha)) {
2838 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2839 __func__);
2840 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2841 CRB_NIU_XG_PAUSE_CTL_P0 |
2842 CRB_NIU_XG_PAUSE_CTL_P1);
2843
2844 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2845 ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2846 __func__);
2847 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2848 halt_status_unrecoverable = 1;
2849 } else if (is_qla8032(ha)) {
2850 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2851 ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2852 __func__);
2853 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2854 halt_status_unrecoverable = 1;
2855 }
2856
2857 /*
2858 * Since we cannot change dev_state in interrupt context,
2859 * set appropriate DPC flag then wakeup DPC
2860 */
2861 if (halt_status_unrecoverable) {
2862 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2863 } else {
2864 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2865 __func__);
2866 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2867 }
2868 qla4xxx_mailbox_premature_completion(ha);
2869 qla4xxx_wake_dpc(ha);
2870 }
2871
2872 /**
2873 * qla4_8xxx_watchdog - Poll dev state
2874 * @ha: Pointer to host adapter structure.
2875 *
2876 * Context: Interrupt
2877 **/
qla4_8xxx_watchdog(struct scsi_qla_host * ha)2878 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2879 {
2880 uint32_t dev_state;
2881 uint32_t idc_ctrl;
2882
2883 /* don't poll if reset is going on */
2884 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2885 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2886 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2887 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2888
2889 if (qla4_8xxx_check_temp(ha)) {
2890 if (is_qla8022(ha)) {
2891 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2892 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2893 CRB_NIU_XG_PAUSE_CTL_P0 |
2894 CRB_NIU_XG_PAUSE_CTL_P1);
2895 }
2896 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2897 qla4xxx_wake_dpc(ha);
2898 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2899 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2900
2901 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
2902 __func__);
2903
2904 if (is_qla8032(ha)) {
2905 idc_ctrl = qla4_83xx_rd_reg(ha,
2906 QLA83XX_IDC_DRV_CTRL);
2907 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
2908 ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
2909 __func__);
2910 qla4xxx_mailbox_premature_completion(
2911 ha);
2912 }
2913 }
2914
2915 if (is_qla8032(ha) ||
2916 (is_qla8022(ha) && !ql4xdontresethba)) {
2917 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2918 qla4xxx_wake_dpc(ha);
2919 }
2920 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
2921 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2922 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2923 __func__);
2924 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2925 qla4xxx_wake_dpc(ha);
2926 } else {
2927 /* Check firmware health */
2928 if (qla4_8xxx_check_fw_alive(ha))
2929 qla4_8xxx_process_fw_error(ha);
2930 }
2931 }
2932 }
2933
qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session * cls_sess)2934 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2935 {
2936 struct iscsi_session *sess;
2937 struct ddb_entry *ddb_entry;
2938 struct scsi_qla_host *ha;
2939
2940 sess = cls_sess->dd_data;
2941 ddb_entry = sess->dd_data;
2942 ha = ddb_entry->ha;
2943
2944 if (!(ddb_entry->ddb_type == FLASH_DDB))
2945 return;
2946
2947 if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2948 !iscsi_is_session_online(cls_sess)) {
2949 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2950 INVALID_ENTRY) {
2951 if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2952 0) {
2953 atomic_set(&ddb_entry->retry_relogin_timer,
2954 INVALID_ENTRY);
2955 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2956 set_bit(DF_RELOGIN, &ddb_entry->flags);
2957 DEBUG2(ql4_printk(KERN_INFO, ha,
2958 "%s: index [%d] login device\n",
2959 __func__, ddb_entry->fw_ddb_index));
2960 } else
2961 atomic_dec(&ddb_entry->retry_relogin_timer);
2962 }
2963 }
2964
2965 /* Wait for relogin to timeout */
2966 if (atomic_read(&ddb_entry->relogin_timer) &&
2967 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2968 /*
2969 * If the relogin times out and the device is
2970 * still NOT ONLINE then try and relogin again.
2971 */
2972 if (!iscsi_is_session_online(cls_sess)) {
2973 /* Reset retry relogin timer */
2974 atomic_inc(&ddb_entry->relogin_retry_count);
2975 DEBUG2(ql4_printk(KERN_INFO, ha,
2976 "%s: index[%d] relogin timed out-retrying"
2977 " relogin (%d), retry (%d)\n", __func__,
2978 ddb_entry->fw_ddb_index,
2979 atomic_read(&ddb_entry->relogin_retry_count),
2980 ddb_entry->default_time2wait + 4));
2981 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2982 atomic_set(&ddb_entry->retry_relogin_timer,
2983 ddb_entry->default_time2wait + 4);
2984 }
2985 }
2986 }
2987
2988 /**
2989 * qla4xxx_timer - checks every second for work to do.
2990 * @ha: Pointer to host adapter structure.
2991 **/
qla4xxx_timer(struct scsi_qla_host * ha)2992 static void qla4xxx_timer(struct scsi_qla_host *ha)
2993 {
2994 int start_dpc = 0;
2995 uint16_t w;
2996
2997 iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2998
2999 /* If we are in the middle of AER/EEH processing
3000 * skip any processing and reschedule the timer
3001 */
3002 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3003 mod_timer(&ha->timer, jiffies + HZ);
3004 return;
3005 }
3006
3007 /* Hardware read to trigger an EEH error during mailbox waits. */
3008 if (!pci_channel_offline(ha->pdev))
3009 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
3010
3011 if (is_qla80XX(ha))
3012 qla4_8xxx_watchdog(ha);
3013
3014 if (is_qla40XX(ha)) {
3015 /* Check for heartbeat interval. */
3016 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
3017 ha->heartbeat_interval != 0) {
3018 ha->seconds_since_last_heartbeat++;
3019 if (ha->seconds_since_last_heartbeat >
3020 ha->heartbeat_interval + 2)
3021 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3022 }
3023 }
3024
3025 /* Process any deferred work. */
3026 if (!list_empty(&ha->work_list))
3027 start_dpc++;
3028
3029 /* Wakeup the dpc routine for this adapter, if needed. */
3030 if (start_dpc ||
3031 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3032 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
3033 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
3034 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3035 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3036 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
3037 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
3038 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
3039 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
3040 test_bit(DPC_AEN, &ha->dpc_flags)) {
3041 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
3042 " - dpc flags = 0x%lx\n",
3043 ha->host_no, __func__, ha->dpc_flags));
3044 qla4xxx_wake_dpc(ha);
3045 }
3046
3047 /* Reschedule timer thread to call us back in one second */
3048 mod_timer(&ha->timer, jiffies + HZ);
3049
3050 DEBUG2(ha->seconds_since_last_intr++);
3051 }
3052
3053 /**
3054 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
3055 * @ha: Pointer to host adapter structure.
3056 *
3057 * This routine stalls the driver until all outstanding commands are returned.
3058 * Caller must release the Hardware Lock prior to calling this routine.
3059 **/
qla4xxx_cmd_wait(struct scsi_qla_host * ha)3060 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
3061 {
3062 uint32_t index = 0;
3063 unsigned long flags;
3064 struct scsi_cmnd *cmd;
3065
3066 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
3067
3068 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
3069 "complete\n", WAIT_CMD_TOV));
3070
3071 while (!time_after_eq(jiffies, wtime)) {
3072 spin_lock_irqsave(&ha->hardware_lock, flags);
3073 /* Find a command that hasn't completed. */
3074 for (index = 0; index < ha->host->can_queue; index++) {
3075 cmd = scsi_host_find_tag(ha->host, index);
3076 /*
3077 * We cannot just check if the index is valid,
3078 * becase if we are run from the scsi eh, then
3079 * the scsi/block layer is going to prevent
3080 * the tag from being released.
3081 */
3082 if (cmd != NULL && CMD_SP(cmd))
3083 break;
3084 }
3085 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3086
3087 /* If No Commands are pending, wait is complete */
3088 if (index == ha->host->can_queue)
3089 return QLA_SUCCESS;
3090
3091 msleep(1000);
3092 }
3093 /* If we timed out on waiting for commands to come back
3094 * return ERROR. */
3095 return QLA_ERROR;
3096 }
3097
qla4xxx_hw_reset(struct scsi_qla_host * ha)3098 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
3099 {
3100 uint32_t ctrl_status;
3101 unsigned long flags = 0;
3102
3103 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
3104
3105 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
3106 return QLA_ERROR;
3107
3108 spin_lock_irqsave(&ha->hardware_lock, flags);
3109
3110 /*
3111 * If the SCSI Reset Interrupt bit is set, clear it.
3112 * Otherwise, the Soft Reset won't work.
3113 */
3114 ctrl_status = readw(&ha->reg->ctrl_status);
3115 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
3116 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3117
3118 /* Issue Soft Reset */
3119 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
3120 readl(&ha->reg->ctrl_status);
3121
3122 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3123 return QLA_SUCCESS;
3124 }
3125
3126 /**
3127 * qla4xxx_soft_reset - performs soft reset.
3128 * @ha: Pointer to host adapter structure.
3129 **/
qla4xxx_soft_reset(struct scsi_qla_host * ha)3130 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
3131 {
3132 uint32_t max_wait_time;
3133 unsigned long flags = 0;
3134 int status;
3135 uint32_t ctrl_status;
3136
3137 status = qla4xxx_hw_reset(ha);
3138 if (status != QLA_SUCCESS)
3139 return status;
3140
3141 status = QLA_ERROR;
3142 /* Wait until the Network Reset Intr bit is cleared */
3143 max_wait_time = RESET_INTR_TOV;
3144 do {
3145 spin_lock_irqsave(&ha->hardware_lock, flags);
3146 ctrl_status = readw(&ha->reg->ctrl_status);
3147 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3148
3149 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
3150 break;
3151
3152 msleep(1000);
3153 } while ((--max_wait_time));
3154
3155 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
3156 DEBUG2(printk(KERN_WARNING
3157 "scsi%ld: Network Reset Intr not cleared by "
3158 "Network function, clearing it now!\n",
3159 ha->host_no));
3160 spin_lock_irqsave(&ha->hardware_lock, flags);
3161 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
3162 readl(&ha->reg->ctrl_status);
3163 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3164 }
3165
3166 /* Wait until the firmware tells us the Soft Reset is done */
3167 max_wait_time = SOFT_RESET_TOV;
3168 do {
3169 spin_lock_irqsave(&ha->hardware_lock, flags);
3170 ctrl_status = readw(&ha->reg->ctrl_status);
3171 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3172
3173 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
3174 status = QLA_SUCCESS;
3175 break;
3176 }
3177
3178 msleep(1000);
3179 } while ((--max_wait_time));
3180
3181 /*
3182 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
3183 * after the soft reset has taken place.
3184 */
3185 spin_lock_irqsave(&ha->hardware_lock, flags);
3186 ctrl_status = readw(&ha->reg->ctrl_status);
3187 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
3188 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3189 readl(&ha->reg->ctrl_status);
3190 }
3191 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3192
3193 /* If soft reset fails then most probably the bios on other
3194 * function is also enabled.
3195 * Since the initialization is sequential the other fn
3196 * wont be able to acknowledge the soft reset.
3197 * Issue a force soft reset to workaround this scenario.
3198 */
3199 if (max_wait_time == 0) {
3200 /* Issue Force Soft Reset */
3201 spin_lock_irqsave(&ha->hardware_lock, flags);
3202 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
3203 readl(&ha->reg->ctrl_status);
3204 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3205 /* Wait until the firmware tells us the Soft Reset is done */
3206 max_wait_time = SOFT_RESET_TOV;
3207 do {
3208 spin_lock_irqsave(&ha->hardware_lock, flags);
3209 ctrl_status = readw(&ha->reg->ctrl_status);
3210 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3211
3212 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
3213 status = QLA_SUCCESS;
3214 break;
3215 }
3216
3217 msleep(1000);
3218 } while ((--max_wait_time));
3219 }
3220
3221 return status;
3222 }
3223
3224 /**
3225 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
3226 * @ha: Pointer to host adapter structure.
3227 * @res: returned scsi status
3228 *
3229 * This routine is called just prior to a HARD RESET to return all
3230 * outstanding commands back to the Operating System.
3231 * Caller should make sure that the following locks are released
3232 * before this calling routine: Hardware lock, and io_request_lock.
3233 **/
qla4xxx_abort_active_cmds(struct scsi_qla_host * ha,int res)3234 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
3235 {
3236 struct srb *srb;
3237 int i;
3238 unsigned long flags;
3239
3240 spin_lock_irqsave(&ha->hardware_lock, flags);
3241 for (i = 0; i < ha->host->can_queue; i++) {
3242 srb = qla4xxx_del_from_active_array(ha, i);
3243 if (srb != NULL) {
3244 srb->cmd->result = res;
3245 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
3246 }
3247 }
3248 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3249 }
3250
qla4xxx_dead_adapter_cleanup(struct scsi_qla_host * ha)3251 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
3252 {
3253 clear_bit(AF_ONLINE, &ha->flags);
3254
3255 /* Disable the board */
3256 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
3257
3258 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3259 qla4xxx_mark_all_devices_missing(ha);
3260 clear_bit(AF_INIT_DONE, &ha->flags);
3261 }
3262
qla4xxx_fail_session(struct iscsi_cls_session * cls_session)3263 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
3264 {
3265 struct iscsi_session *sess;
3266 struct ddb_entry *ddb_entry;
3267
3268 sess = cls_session->dd_data;
3269 ddb_entry = sess->dd_data;
3270 ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
3271
3272 if (ddb_entry->ddb_type == FLASH_DDB)
3273 iscsi_block_session(ddb_entry->sess);
3274 else
3275 iscsi_session_failure(cls_session->dd_data,
3276 ISCSI_ERR_CONN_FAILED);
3277 }
3278
3279 /**
3280 * qla4xxx_recover_adapter - recovers adapter after a fatal error
3281 * @ha: Pointer to host adapter structure.
3282 **/
qla4xxx_recover_adapter(struct scsi_qla_host * ha)3283 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
3284 {
3285 int status = QLA_ERROR;
3286 uint8_t reset_chip = 0;
3287 uint32_t dev_state;
3288 unsigned long wait;
3289
3290 /* Stall incoming I/O until we are done */
3291 scsi_block_requests(ha->host);
3292 clear_bit(AF_ONLINE, &ha->flags);
3293 clear_bit(AF_LINK_UP, &ha->flags);
3294
3295 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
3296
3297 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3298
3299 if (is_qla8032(ha) &&
3300 !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3301 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3302 __func__);
3303 /* disable pause frame for ISP83xx */
3304 qla4_83xx_disable_pause(ha);
3305 }
3306
3307 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
3308
3309 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
3310 reset_chip = 1;
3311
3312 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
3313 * do not reset adapter, jump to initialize_adapter */
3314 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3315 status = QLA_SUCCESS;
3316 goto recover_ha_init_adapter;
3317 }
3318
3319 /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
3320 * from eh_host_reset or ioctl module */
3321 if (is_qla80XX(ha) && !reset_chip &&
3322 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3323
3324 DEBUG2(ql4_printk(KERN_INFO, ha,
3325 "scsi%ld: %s - Performing stop_firmware...\n",
3326 ha->host_no, __func__));
3327 status = ha->isp_ops->reset_firmware(ha);
3328 if (status == QLA_SUCCESS) {
3329 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3330 qla4xxx_cmd_wait(ha);
3331
3332 ha->isp_ops->disable_intrs(ha);
3333 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3334 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3335 } else {
3336 /* If the stop_firmware fails then
3337 * reset the entire chip */
3338 reset_chip = 1;
3339 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3340 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3341 }
3342 }
3343
3344 /* Issue full chip reset if recovering from a catastrophic error,
3345 * or if stop_firmware fails for ISP-8xxx.
3346 * This is the default case for ISP-4xxx */
3347 if (is_qla40XX(ha) || reset_chip) {
3348 if (is_qla40XX(ha))
3349 goto chip_reset;
3350
3351 /* Check if 8XXX firmware is alive or not
3352 * We may have arrived here from NEED_RESET
3353 * detection only */
3354 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3355 goto chip_reset;
3356
3357 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3358 while (time_before(jiffies, wait)) {
3359 if (qla4_8xxx_check_fw_alive(ha)) {
3360 qla4xxx_mailbox_premature_completion(ha);
3361 break;
3362 }
3363
3364 set_current_state(TASK_UNINTERRUPTIBLE);
3365 schedule_timeout(HZ);
3366 }
3367 chip_reset:
3368 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3369 qla4xxx_cmd_wait(ha);
3370
3371 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3372 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3373 DEBUG2(ql4_printk(KERN_INFO, ha,
3374 "scsi%ld: %s - Performing chip reset..\n",
3375 ha->host_no, __func__));
3376 status = ha->isp_ops->reset_chip(ha);
3377 }
3378
3379 /* Flush any pending ddb changed AENs */
3380 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3381
3382 recover_ha_init_adapter:
3383 /* Upon successful firmware/chip reset, re-initialize the adapter */
3384 if (status == QLA_SUCCESS) {
3385 /* For ISP-4xxx, force function 1 to always initialize
3386 * before function 3 to prevent both funcions from
3387 * stepping on top of the other */
3388 if (is_qla40XX(ha) && (ha->mac_index == 3))
3389 ssleep(6);
3390
3391 /* NOTE: AF_ONLINE flag set upon successful completion of
3392 * qla4xxx_initialize_adapter */
3393 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3394 }
3395
3396 /* Retry failed adapter initialization, if necessary
3397 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3398 * case to prevent ping-pong resets between functions */
3399 if (!test_bit(AF_ONLINE, &ha->flags) &&
3400 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3401 /* Adapter initialization failed, see if we can retry
3402 * resetting the ha.
3403 * Since we don't want to block the DPC for too long
3404 * with multiple resets in the same thread,
3405 * utilize DPC to retry */
3406 if (is_qla80XX(ha)) {
3407 ha->isp_ops->idc_lock(ha);
3408 dev_state = qla4_8xxx_rd_direct(ha,
3409 QLA8XXX_CRB_DEV_STATE);
3410 ha->isp_ops->idc_unlock(ha);
3411 if (dev_state == QLA8XXX_DEV_FAILED) {
3412 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3413 "recover adapter. H/W is in Failed "
3414 "state\n", __func__);
3415 qla4xxx_dead_adapter_cleanup(ha);
3416 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3417 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3418 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3419 &ha->dpc_flags);
3420 status = QLA_ERROR;
3421
3422 goto exit_recover;
3423 }
3424 }
3425
3426 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3427 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3428 DEBUG2(printk("scsi%ld: recover adapter - retrying "
3429 "(%d) more times\n", ha->host_no,
3430 ha->retry_reset_ha_cnt));
3431 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3432 status = QLA_ERROR;
3433 } else {
3434 if (ha->retry_reset_ha_cnt > 0) {
3435 /* Schedule another Reset HA--DPC will retry */
3436 ha->retry_reset_ha_cnt--;
3437 DEBUG2(printk("scsi%ld: recover adapter - "
3438 "retry remaining %d\n",
3439 ha->host_no,
3440 ha->retry_reset_ha_cnt));
3441 status = QLA_ERROR;
3442 }
3443
3444 if (ha->retry_reset_ha_cnt == 0) {
3445 /* Recover adapter retries have been exhausted.
3446 * Adapter DEAD */
3447 DEBUG2(printk("scsi%ld: recover adapter "
3448 "failed - board disabled\n",
3449 ha->host_no));
3450 qla4xxx_dead_adapter_cleanup(ha);
3451 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3452 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3453 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3454 &ha->dpc_flags);
3455 status = QLA_ERROR;
3456 }
3457 }
3458 } else {
3459 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3460 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3461 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3462 }
3463
3464 exit_recover:
3465 ha->adapter_error_count++;
3466
3467 if (test_bit(AF_ONLINE, &ha->flags))
3468 ha->isp_ops->enable_intrs(ha);
3469
3470 scsi_unblock_requests(ha->host);
3471
3472 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3473 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3474 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3475
3476 return status;
3477 }
3478
qla4xxx_relogin_devices(struct iscsi_cls_session * cls_session)3479 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3480 {
3481 struct iscsi_session *sess;
3482 struct ddb_entry *ddb_entry;
3483 struct scsi_qla_host *ha;
3484
3485 sess = cls_session->dd_data;
3486 ddb_entry = sess->dd_data;
3487 ha = ddb_entry->ha;
3488 if (!iscsi_is_session_online(cls_session)) {
3489 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3490 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3491 " unblock session\n", ha->host_no, __func__,
3492 ddb_entry->fw_ddb_index);
3493 iscsi_unblock_session(ddb_entry->sess);
3494 } else {
3495 /* Trigger relogin */
3496 if (ddb_entry->ddb_type == FLASH_DDB) {
3497 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3498 qla4xxx_arm_relogin_timer(ddb_entry);
3499 } else
3500 iscsi_session_failure(cls_session->dd_data,
3501 ISCSI_ERR_CONN_FAILED);
3502 }
3503 }
3504 }
3505
qla4xxx_unblock_flash_ddb(struct iscsi_cls_session * cls_session)3506 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3507 {
3508 struct iscsi_session *sess;
3509 struct ddb_entry *ddb_entry;
3510 struct scsi_qla_host *ha;
3511
3512 sess = cls_session->dd_data;
3513 ddb_entry = sess->dd_data;
3514 ha = ddb_entry->ha;
3515 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3516 " unblock session\n", ha->host_no, __func__,
3517 ddb_entry->fw_ddb_index);
3518
3519 iscsi_unblock_session(ddb_entry->sess);
3520
3521 /* Start scan target */
3522 if (test_bit(AF_ONLINE, &ha->flags)) {
3523 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3524 " start scan\n", ha->host_no, __func__,
3525 ddb_entry->fw_ddb_index);
3526 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3527 }
3528 return QLA_SUCCESS;
3529 }
3530
qla4xxx_unblock_ddb(struct iscsi_cls_session * cls_session)3531 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3532 {
3533 struct iscsi_session *sess;
3534 struct ddb_entry *ddb_entry;
3535 struct scsi_qla_host *ha;
3536 int status = QLA_SUCCESS;
3537
3538 sess = cls_session->dd_data;
3539 ddb_entry = sess->dd_data;
3540 ha = ddb_entry->ha;
3541 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3542 " unblock user space session\n", ha->host_no, __func__,
3543 ddb_entry->fw_ddb_index);
3544
3545 if (!iscsi_is_session_online(cls_session)) {
3546 iscsi_conn_start(ddb_entry->conn);
3547 iscsi_conn_login_event(ddb_entry->conn,
3548 ISCSI_CONN_STATE_LOGGED_IN);
3549 } else {
3550 ql4_printk(KERN_INFO, ha,
3551 "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3552 ha->host_no, __func__, ddb_entry->fw_ddb_index,
3553 cls_session->sid);
3554 status = QLA_ERROR;
3555 }
3556
3557 return status;
3558 }
3559
qla4xxx_relogin_all_devices(struct scsi_qla_host * ha)3560 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3561 {
3562 iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3563 }
3564
qla4xxx_relogin_flash_ddb(struct iscsi_cls_session * cls_sess)3565 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3566 {
3567 uint16_t relogin_timer;
3568 struct iscsi_session *sess;
3569 struct ddb_entry *ddb_entry;
3570 struct scsi_qla_host *ha;
3571
3572 sess = cls_sess->dd_data;
3573 ddb_entry = sess->dd_data;
3574 ha = ddb_entry->ha;
3575
3576 relogin_timer = max(ddb_entry->default_relogin_timeout,
3577 (uint16_t)RELOGIN_TOV);
3578 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3579
3580 DEBUG2(ql4_printk(KERN_INFO, ha,
3581 "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3582 ddb_entry->fw_ddb_index, relogin_timer));
3583
3584 qla4xxx_login_flash_ddb(cls_sess);
3585 }
3586
qla4xxx_dpc_relogin(struct iscsi_cls_session * cls_sess)3587 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3588 {
3589 struct iscsi_session *sess;
3590 struct ddb_entry *ddb_entry;
3591 struct scsi_qla_host *ha;
3592
3593 sess = cls_sess->dd_data;
3594 ddb_entry = sess->dd_data;
3595 ha = ddb_entry->ha;
3596
3597 if (!(ddb_entry->ddb_type == FLASH_DDB))
3598 return;
3599
3600 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3601 !iscsi_is_session_online(cls_sess)) {
3602 DEBUG2(ql4_printk(KERN_INFO, ha,
3603 "relogin issued\n"));
3604 qla4xxx_relogin_flash_ddb(cls_sess);
3605 }
3606 }
3607
qla4xxx_wake_dpc(struct scsi_qla_host * ha)3608 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3609 {
3610 if (ha->dpc_thread)
3611 queue_work(ha->dpc_thread, &ha->dpc_work);
3612 }
3613
3614 static struct qla4_work_evt *
qla4xxx_alloc_work(struct scsi_qla_host * ha,uint32_t data_size,enum qla4_work_type type)3615 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3616 enum qla4_work_type type)
3617 {
3618 struct qla4_work_evt *e;
3619 uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3620
3621 e = kzalloc(size, GFP_ATOMIC);
3622 if (!e)
3623 return NULL;
3624
3625 INIT_LIST_HEAD(&e->list);
3626 e->type = type;
3627 return e;
3628 }
3629
qla4xxx_post_work(struct scsi_qla_host * ha,struct qla4_work_evt * e)3630 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3631 struct qla4_work_evt *e)
3632 {
3633 unsigned long flags;
3634
3635 spin_lock_irqsave(&ha->work_lock, flags);
3636 list_add_tail(&e->list, &ha->work_list);
3637 spin_unlock_irqrestore(&ha->work_lock, flags);
3638 qla4xxx_wake_dpc(ha);
3639 }
3640
qla4xxx_post_aen_work(struct scsi_qla_host * ha,enum iscsi_host_event_code aen_code,uint32_t data_size,uint8_t * data)3641 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3642 enum iscsi_host_event_code aen_code,
3643 uint32_t data_size, uint8_t *data)
3644 {
3645 struct qla4_work_evt *e;
3646
3647 e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3648 if (!e)
3649 return QLA_ERROR;
3650
3651 e->u.aen.code = aen_code;
3652 e->u.aen.data_size = data_size;
3653 memcpy(e->u.aen.data, data, data_size);
3654
3655 qla4xxx_post_work(ha, e);
3656
3657 return QLA_SUCCESS;
3658 }
3659
qla4xxx_post_ping_evt_work(struct scsi_qla_host * ha,uint32_t status,uint32_t pid,uint32_t data_size,uint8_t * data)3660 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3661 uint32_t status, uint32_t pid,
3662 uint32_t data_size, uint8_t *data)
3663 {
3664 struct qla4_work_evt *e;
3665
3666 e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3667 if (!e)
3668 return QLA_ERROR;
3669
3670 e->u.ping.status = status;
3671 e->u.ping.pid = pid;
3672 e->u.ping.data_size = data_size;
3673 memcpy(e->u.ping.data, data, data_size);
3674
3675 qla4xxx_post_work(ha, e);
3676
3677 return QLA_SUCCESS;
3678 }
3679
qla4xxx_do_work(struct scsi_qla_host * ha)3680 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3681 {
3682 struct qla4_work_evt *e, *tmp;
3683 unsigned long flags;
3684 LIST_HEAD(work);
3685
3686 spin_lock_irqsave(&ha->work_lock, flags);
3687 list_splice_init(&ha->work_list, &work);
3688 spin_unlock_irqrestore(&ha->work_lock, flags);
3689
3690 list_for_each_entry_safe(e, tmp, &work, list) {
3691 list_del_init(&e->list);
3692
3693 switch (e->type) {
3694 case QLA4_EVENT_AEN:
3695 iscsi_post_host_event(ha->host_no,
3696 &qla4xxx_iscsi_transport,
3697 e->u.aen.code,
3698 e->u.aen.data_size,
3699 e->u.aen.data);
3700 break;
3701 case QLA4_EVENT_PING_STATUS:
3702 iscsi_ping_comp_event(ha->host_no,
3703 &qla4xxx_iscsi_transport,
3704 e->u.ping.status,
3705 e->u.ping.pid,
3706 e->u.ping.data_size,
3707 e->u.ping.data);
3708 break;
3709 default:
3710 ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3711 "supported", e->type);
3712 }
3713 kfree(e);
3714 }
3715 }
3716
3717 /**
3718 * qla4xxx_do_dpc - dpc routine
3719 * @data: in our case pointer to adapter structure
3720 *
3721 * This routine is a task that is schedule by the interrupt handler
3722 * to perform the background processing for interrupts. We put it
3723 * on a task queue that is consumed whenever the scheduler runs; that's
3724 * so you can do anything (i.e. put the process to sleep etc). In fact,
3725 * the mid-level tries to sleep when it reaches the driver threshold
3726 * "host->can_queue". This can cause a panic if we were in our interrupt code.
3727 **/
qla4xxx_do_dpc(struct work_struct * work)3728 static void qla4xxx_do_dpc(struct work_struct *work)
3729 {
3730 struct scsi_qla_host *ha =
3731 container_of(work, struct scsi_qla_host, dpc_work);
3732 int status = QLA_ERROR;
3733
3734 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3735 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3736 ha->host_no, __func__, ha->flags, ha->dpc_flags))
3737
3738 /* Initialization not yet finished. Don't do anything yet. */
3739 if (!test_bit(AF_INIT_DONE, &ha->flags))
3740 return;
3741
3742 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3743 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3744 ha->host_no, __func__, ha->flags));
3745 return;
3746 }
3747
3748 /* post events to application */
3749 qla4xxx_do_work(ha);
3750
3751 if (is_qla80XX(ha)) {
3752 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3753 if (is_qla8032(ha)) {
3754 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3755 __func__);
3756 /* disable pause frame for ISP83xx */
3757 qla4_83xx_disable_pause(ha);
3758 }
3759
3760 ha->isp_ops->idc_lock(ha);
3761 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3762 QLA8XXX_DEV_FAILED);
3763 ha->isp_ops->idc_unlock(ha);
3764 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3765 qla4_8xxx_device_state_handler(ha);
3766 }
3767
3768 if (test_and_clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags))
3769 qla4_83xx_post_idc_ack(ha);
3770
3771 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3772 qla4_8xxx_need_qsnt_handler(ha);
3773 }
3774 }
3775
3776 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3777 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3778 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3779 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3780 if ((is_qla8022(ha) && ql4xdontresethba) ||
3781 (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
3782 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3783 ha->host_no, __func__));
3784 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3785 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3786 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3787 goto dpc_post_reset_ha;
3788 }
3789 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3790 test_bit(DPC_RESET_HA, &ha->dpc_flags))
3791 qla4xxx_recover_adapter(ha);
3792
3793 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3794 uint8_t wait_time = RESET_INTR_TOV;
3795
3796 while ((readw(&ha->reg->ctrl_status) &
3797 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3798 if (--wait_time == 0)
3799 break;
3800 msleep(1000);
3801 }
3802 if (wait_time == 0)
3803 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3804 "bit not cleared-- resetting\n",
3805 ha->host_no, __func__));
3806 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3807 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3808 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3809 status = qla4xxx_recover_adapter(ha);
3810 }
3811 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3812 if (status == QLA_SUCCESS)
3813 ha->isp_ops->enable_intrs(ha);
3814 }
3815 }
3816
3817 dpc_post_reset_ha:
3818 /* ---- process AEN? --- */
3819 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3820 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3821
3822 /* ---- Get DHCP IP Address? --- */
3823 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3824 qla4xxx_get_dhcp_ip_address(ha);
3825
3826 /* ---- relogin device? --- */
3827 if (adapter_up(ha) &&
3828 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3829 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3830 }
3831
3832 /* ---- link change? --- */
3833 if (!test_bit(AF_LOOPBACK, &ha->flags) &&
3834 test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3835 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3836 /* ---- link down? --- */
3837 qla4xxx_mark_all_devices_missing(ha);
3838 } else {
3839 /* ---- link up? --- *
3840 * F/W will auto login to all devices ONLY ONCE after
3841 * link up during driver initialization and runtime
3842 * fatal error recovery. Therefore, the driver must
3843 * manually relogin to devices when recovering from
3844 * connection failures, logouts, expired KATO, etc. */
3845 if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3846 qla4xxx_build_ddb_list(ha, ha->is_reset);
3847 iscsi_host_for_each_session(ha->host,
3848 qla4xxx_login_flash_ddb);
3849 } else
3850 qla4xxx_relogin_all_devices(ha);
3851 }
3852 }
3853 }
3854
3855 /**
3856 * qla4xxx_free_adapter - release the adapter
3857 * @ha: pointer to adapter structure
3858 **/
qla4xxx_free_adapter(struct scsi_qla_host * ha)3859 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3860 {
3861 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3862
3863 /* Turn-off interrupts on the card. */
3864 ha->isp_ops->disable_intrs(ha);
3865
3866 if (is_qla40XX(ha)) {
3867 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3868 &ha->reg->ctrl_status);
3869 readl(&ha->reg->ctrl_status);
3870 } else if (is_qla8022(ha)) {
3871 writel(0, &ha->qla4_82xx_reg->host_int);
3872 readl(&ha->qla4_82xx_reg->host_int);
3873 } else if (is_qla8032(ha)) {
3874 writel(0, &ha->qla4_83xx_reg->risc_intr);
3875 readl(&ha->qla4_83xx_reg->risc_intr);
3876 }
3877
3878 /* Remove timer thread, if present */
3879 if (ha->timer_active)
3880 qla4xxx_stop_timer(ha);
3881
3882 /* Kill the kernel thread for this host */
3883 if (ha->dpc_thread)
3884 destroy_workqueue(ha->dpc_thread);
3885
3886 /* Kill the kernel thread for this host */
3887 if (ha->task_wq)
3888 destroy_workqueue(ha->task_wq);
3889
3890 /* Put firmware in known state */
3891 ha->isp_ops->reset_firmware(ha);
3892
3893 if (is_qla80XX(ha)) {
3894 ha->isp_ops->idc_lock(ha);
3895 qla4_8xxx_clear_drv_active(ha);
3896 ha->isp_ops->idc_unlock(ha);
3897 }
3898
3899 /* Detach interrupts */
3900 qla4xxx_free_irqs(ha);
3901
3902 /* free extra memory */
3903 qla4xxx_mem_free(ha);
3904 }
3905
qla4_8xxx_iospace_config(struct scsi_qla_host * ha)3906 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3907 {
3908 int status = 0;
3909 unsigned long mem_base, mem_len, db_base, db_len;
3910 struct pci_dev *pdev = ha->pdev;
3911
3912 status = pci_request_regions(pdev, DRIVER_NAME);
3913 if (status) {
3914 printk(KERN_WARNING
3915 "scsi(%ld) Failed to reserve PIO regions (%s) "
3916 "status=%d\n", ha->host_no, pci_name(pdev), status);
3917 goto iospace_error_exit;
3918 }
3919
3920 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3921 __func__, pdev->revision));
3922 ha->revision_id = pdev->revision;
3923
3924 /* remap phys address */
3925 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3926 mem_len = pci_resource_len(pdev, 0);
3927 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3928 __func__, mem_base, mem_len));
3929
3930 /* mapping of pcibase pointer */
3931 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3932 if (!ha->nx_pcibase) {
3933 printk(KERN_ERR
3934 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3935 pci_release_regions(ha->pdev);
3936 goto iospace_error_exit;
3937 }
3938
3939 /* Mapping of IO base pointer, door bell read and write pointer */
3940
3941 /* mapping of IO base pointer */
3942 if (is_qla8022(ha)) {
3943 ha->qla4_82xx_reg = (struct device_reg_82xx __iomem *)
3944 ((uint8_t *)ha->nx_pcibase + 0xbc000 +
3945 (ha->pdev->devfn << 11));
3946 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3947 QLA82XX_CAM_RAM_DB2);
3948 } else if (is_qla8032(ha)) {
3949 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
3950 ((uint8_t *)ha->nx_pcibase);
3951 }
3952
3953 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
3954 db_len = pci_resource_len(pdev, 4);
3955
3956 return 0;
3957 iospace_error_exit:
3958 return -ENOMEM;
3959 }
3960
3961 /***
3962 * qla4xxx_iospace_config - maps registers
3963 * @ha: pointer to adapter structure
3964 *
3965 * This routines maps HBA's registers from the pci address space
3966 * into the kernel virtual address space for memory mapped i/o.
3967 **/
qla4xxx_iospace_config(struct scsi_qla_host * ha)3968 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3969 {
3970 unsigned long pio, pio_len, pio_flags;
3971 unsigned long mmio, mmio_len, mmio_flags;
3972
3973 pio = pci_resource_start(ha->pdev, 0);
3974 pio_len = pci_resource_len(ha->pdev, 0);
3975 pio_flags = pci_resource_flags(ha->pdev, 0);
3976 if (pio_flags & IORESOURCE_IO) {
3977 if (pio_len < MIN_IOBASE_LEN) {
3978 ql4_printk(KERN_WARNING, ha,
3979 "Invalid PCI I/O region size\n");
3980 pio = 0;
3981 }
3982 } else {
3983 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3984 pio = 0;
3985 }
3986
3987 /* Use MMIO operations for all accesses. */
3988 mmio = pci_resource_start(ha->pdev, 1);
3989 mmio_len = pci_resource_len(ha->pdev, 1);
3990 mmio_flags = pci_resource_flags(ha->pdev, 1);
3991
3992 if (!(mmio_flags & IORESOURCE_MEM)) {
3993 ql4_printk(KERN_ERR, ha,
3994 "region #0 not an MMIO resource, aborting\n");
3995
3996 goto iospace_error_exit;
3997 }
3998
3999 if (mmio_len < MIN_IOBASE_LEN) {
4000 ql4_printk(KERN_ERR, ha,
4001 "Invalid PCI mem region size, aborting\n");
4002 goto iospace_error_exit;
4003 }
4004
4005 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
4006 ql4_printk(KERN_WARNING, ha,
4007 "Failed to reserve PIO/MMIO regions\n");
4008
4009 goto iospace_error_exit;
4010 }
4011
4012 ha->pio_address = pio;
4013 ha->pio_length = pio_len;
4014 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
4015 if (!ha->reg) {
4016 ql4_printk(KERN_ERR, ha,
4017 "cannot remap MMIO, aborting\n");
4018
4019 goto iospace_error_exit;
4020 }
4021
4022 return 0;
4023
4024 iospace_error_exit:
4025 return -ENOMEM;
4026 }
4027
4028 static struct isp_operations qla4xxx_isp_ops = {
4029 .iospace_config = qla4xxx_iospace_config,
4030 .pci_config = qla4xxx_pci_config,
4031 .disable_intrs = qla4xxx_disable_intrs,
4032 .enable_intrs = qla4xxx_enable_intrs,
4033 .start_firmware = qla4xxx_start_firmware,
4034 .intr_handler = qla4xxx_intr_handler,
4035 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
4036 .reset_chip = qla4xxx_soft_reset,
4037 .reset_firmware = qla4xxx_hw_reset,
4038 .queue_iocb = qla4xxx_queue_iocb,
4039 .complete_iocb = qla4xxx_complete_iocb,
4040 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
4041 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
4042 .get_sys_info = qla4xxx_get_sys_info,
4043 .queue_mailbox_command = qla4xxx_queue_mbox_cmd,
4044 .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
4045 };
4046
4047 static struct isp_operations qla4_82xx_isp_ops = {
4048 .iospace_config = qla4_8xxx_iospace_config,
4049 .pci_config = qla4_8xxx_pci_config,
4050 .disable_intrs = qla4_82xx_disable_intrs,
4051 .enable_intrs = qla4_82xx_enable_intrs,
4052 .start_firmware = qla4_8xxx_load_risc,
4053 .restart_firmware = qla4_82xx_try_start_fw,
4054 .intr_handler = qla4_82xx_intr_handler,
4055 .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
4056 .need_reset = qla4_8xxx_need_reset,
4057 .reset_chip = qla4_82xx_isp_reset,
4058 .reset_firmware = qla4_8xxx_stop_firmware,
4059 .queue_iocb = qla4_82xx_queue_iocb,
4060 .complete_iocb = qla4_82xx_complete_iocb,
4061 .rd_shdw_req_q_out = qla4_82xx_rd_shdw_req_q_out,
4062 .rd_shdw_rsp_q_in = qla4_82xx_rd_shdw_rsp_q_in,
4063 .get_sys_info = qla4_8xxx_get_sys_info,
4064 .rd_reg_direct = qla4_82xx_rd_32,
4065 .wr_reg_direct = qla4_82xx_wr_32,
4066 .rd_reg_indirect = qla4_82xx_md_rd_32,
4067 .wr_reg_indirect = qla4_82xx_md_wr_32,
4068 .idc_lock = qla4_82xx_idc_lock,
4069 .idc_unlock = qla4_82xx_idc_unlock,
4070 .rom_lock_recovery = qla4_82xx_rom_lock_recovery,
4071 .queue_mailbox_command = qla4_82xx_queue_mbox_cmd,
4072 .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
4073 };
4074
4075 static struct isp_operations qla4_83xx_isp_ops = {
4076 .iospace_config = qla4_8xxx_iospace_config,
4077 .pci_config = qla4_8xxx_pci_config,
4078 .disable_intrs = qla4_83xx_disable_intrs,
4079 .enable_intrs = qla4_83xx_enable_intrs,
4080 .start_firmware = qla4_8xxx_load_risc,
4081 .restart_firmware = qla4_83xx_start_firmware,
4082 .intr_handler = qla4_83xx_intr_handler,
4083 .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
4084 .need_reset = qla4_8xxx_need_reset,
4085 .reset_chip = qla4_83xx_isp_reset,
4086 .reset_firmware = qla4_8xxx_stop_firmware,
4087 .queue_iocb = qla4_83xx_queue_iocb,
4088 .complete_iocb = qla4_83xx_complete_iocb,
4089 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
4090 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
4091 .get_sys_info = qla4_8xxx_get_sys_info,
4092 .rd_reg_direct = qla4_83xx_rd_reg,
4093 .wr_reg_direct = qla4_83xx_wr_reg,
4094 .rd_reg_indirect = qla4_83xx_rd_reg_indirect,
4095 .wr_reg_indirect = qla4_83xx_wr_reg_indirect,
4096 .idc_lock = qla4_83xx_drv_lock,
4097 .idc_unlock = qla4_83xx_drv_unlock,
4098 .rom_lock_recovery = qla4_83xx_rom_lock_recovery,
4099 .queue_mailbox_command = qla4_83xx_queue_mbox_cmd,
4100 .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
4101 };
4102
qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host * ha)4103 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4104 {
4105 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
4106 }
4107
qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host * ha)4108 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4109 {
4110 return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
4111 }
4112
qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host * ha)4113 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4114 {
4115 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
4116 }
4117
qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host * ha)4118 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4119 {
4120 return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
4121 }
4122
qla4xxx_show_boot_eth_info(void * data,int type,char * buf)4123 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
4124 {
4125 struct scsi_qla_host *ha = data;
4126 char *str = buf;
4127 int rc;
4128
4129 switch (type) {
4130 case ISCSI_BOOT_ETH_FLAGS:
4131 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4132 break;
4133 case ISCSI_BOOT_ETH_INDEX:
4134 rc = sprintf(str, "0\n");
4135 break;
4136 case ISCSI_BOOT_ETH_MAC:
4137 rc = sysfs_format_mac(str, ha->my_mac,
4138 MAC_ADDR_LEN);
4139 break;
4140 default:
4141 rc = -ENOSYS;
4142 break;
4143 }
4144 return rc;
4145 }
4146
qla4xxx_eth_get_attr_visibility(void * data,int type)4147 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
4148 {
4149 int rc;
4150
4151 switch (type) {
4152 case ISCSI_BOOT_ETH_FLAGS:
4153 case ISCSI_BOOT_ETH_MAC:
4154 case ISCSI_BOOT_ETH_INDEX:
4155 rc = S_IRUGO;
4156 break;
4157 default:
4158 rc = 0;
4159 break;
4160 }
4161 return rc;
4162 }
4163
qla4xxx_show_boot_ini_info(void * data,int type,char * buf)4164 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
4165 {
4166 struct scsi_qla_host *ha = data;
4167 char *str = buf;
4168 int rc;
4169
4170 switch (type) {
4171 case ISCSI_BOOT_INI_INITIATOR_NAME:
4172 rc = sprintf(str, "%s\n", ha->name_string);
4173 break;
4174 default:
4175 rc = -ENOSYS;
4176 break;
4177 }
4178 return rc;
4179 }
4180
qla4xxx_ini_get_attr_visibility(void * data,int type)4181 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
4182 {
4183 int rc;
4184
4185 switch (type) {
4186 case ISCSI_BOOT_INI_INITIATOR_NAME:
4187 rc = S_IRUGO;
4188 break;
4189 default:
4190 rc = 0;
4191 break;
4192 }
4193 return rc;
4194 }
4195
4196 static ssize_t
qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info * boot_sess,int type,char * buf)4197 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
4198 char *buf)
4199 {
4200 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4201 char *str = buf;
4202 int rc;
4203
4204 switch (type) {
4205 case ISCSI_BOOT_TGT_NAME:
4206 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
4207 break;
4208 case ISCSI_BOOT_TGT_IP_ADDR:
4209 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
4210 rc = sprintf(buf, "%pI4\n",
4211 &boot_conn->dest_ipaddr.ip_address);
4212 else
4213 rc = sprintf(str, "%pI6\n",
4214 &boot_conn->dest_ipaddr.ip_address);
4215 break;
4216 case ISCSI_BOOT_TGT_PORT:
4217 rc = sprintf(str, "%d\n", boot_conn->dest_port);
4218 break;
4219 case ISCSI_BOOT_TGT_CHAP_NAME:
4220 rc = sprintf(str, "%.*s\n",
4221 boot_conn->chap.target_chap_name_length,
4222 (char *)&boot_conn->chap.target_chap_name);
4223 break;
4224 case ISCSI_BOOT_TGT_CHAP_SECRET:
4225 rc = sprintf(str, "%.*s\n",
4226 boot_conn->chap.target_secret_length,
4227 (char *)&boot_conn->chap.target_secret);
4228 break;
4229 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4230 rc = sprintf(str, "%.*s\n",
4231 boot_conn->chap.intr_chap_name_length,
4232 (char *)&boot_conn->chap.intr_chap_name);
4233 break;
4234 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4235 rc = sprintf(str, "%.*s\n",
4236 boot_conn->chap.intr_secret_length,
4237 (char *)&boot_conn->chap.intr_secret);
4238 break;
4239 case ISCSI_BOOT_TGT_FLAGS:
4240 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4241 break;
4242 case ISCSI_BOOT_TGT_NIC_ASSOC:
4243 rc = sprintf(str, "0\n");
4244 break;
4245 default:
4246 rc = -ENOSYS;
4247 break;
4248 }
4249 return rc;
4250 }
4251
qla4xxx_show_boot_tgt_pri_info(void * data,int type,char * buf)4252 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
4253 {
4254 struct scsi_qla_host *ha = data;
4255 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
4256
4257 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4258 }
4259
qla4xxx_show_boot_tgt_sec_info(void * data,int type,char * buf)4260 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
4261 {
4262 struct scsi_qla_host *ha = data;
4263 struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
4264
4265 return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4266 }
4267
qla4xxx_tgt_get_attr_visibility(void * data,int type)4268 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
4269 {
4270 int rc;
4271
4272 switch (type) {
4273 case ISCSI_BOOT_TGT_NAME:
4274 case ISCSI_BOOT_TGT_IP_ADDR:
4275 case ISCSI_BOOT_TGT_PORT:
4276 case ISCSI_BOOT_TGT_CHAP_NAME:
4277 case ISCSI_BOOT_TGT_CHAP_SECRET:
4278 case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4279 case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4280 case ISCSI_BOOT_TGT_NIC_ASSOC:
4281 case ISCSI_BOOT_TGT_FLAGS:
4282 rc = S_IRUGO;
4283 break;
4284 default:
4285 rc = 0;
4286 break;
4287 }
4288 return rc;
4289 }
4290
qla4xxx_boot_release(void * data)4291 static void qla4xxx_boot_release(void *data)
4292 {
4293 struct scsi_qla_host *ha = data;
4294
4295 scsi_host_put(ha->host);
4296 }
4297
get_fw_boot_info(struct scsi_qla_host * ha,uint16_t ddb_index[])4298 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
4299 {
4300 dma_addr_t buf_dma;
4301 uint32_t addr, pri_addr, sec_addr;
4302 uint32_t offset;
4303 uint16_t func_num;
4304 uint8_t val;
4305 uint8_t *buf = NULL;
4306 size_t size = 13 * sizeof(uint8_t);
4307 int ret = QLA_SUCCESS;
4308
4309 func_num = PCI_FUNC(ha->pdev->devfn);
4310
4311 ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
4312 __func__, ha->pdev->device, func_num);
4313
4314 if (is_qla40XX(ha)) {
4315 if (func_num == 1) {
4316 addr = NVRAM_PORT0_BOOT_MODE;
4317 pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
4318 sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
4319 } else if (func_num == 3) {
4320 addr = NVRAM_PORT1_BOOT_MODE;
4321 pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
4322 sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
4323 } else {
4324 ret = QLA_ERROR;
4325 goto exit_boot_info;
4326 }
4327
4328 /* Check Boot Mode */
4329 val = rd_nvram_byte(ha, addr);
4330 if (!(val & 0x07)) {
4331 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
4332 "options : 0x%x\n", __func__, val));
4333 ret = QLA_ERROR;
4334 goto exit_boot_info;
4335 }
4336
4337 /* get primary valid target index */
4338 val = rd_nvram_byte(ha, pri_addr);
4339 if (val & BIT_7)
4340 ddb_index[0] = (val & 0x7f);
4341
4342 /* get secondary valid target index */
4343 val = rd_nvram_byte(ha, sec_addr);
4344 if (val & BIT_7)
4345 ddb_index[1] = (val & 0x7f);
4346
4347 } else if (is_qla80XX(ha)) {
4348 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4349 &buf_dma, GFP_KERNEL);
4350 if (!buf) {
4351 DEBUG2(ql4_printk(KERN_ERR, ha,
4352 "%s: Unable to allocate dma buffer\n",
4353 __func__));
4354 ret = QLA_ERROR;
4355 goto exit_boot_info;
4356 }
4357
4358 if (ha->port_num == 0)
4359 offset = BOOT_PARAM_OFFSET_PORT0;
4360 else if (ha->port_num == 1)
4361 offset = BOOT_PARAM_OFFSET_PORT1;
4362 else {
4363 ret = QLA_ERROR;
4364 goto exit_boot_info_free;
4365 }
4366 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4367 offset;
4368 if (qla4xxx_get_flash(ha, buf_dma, addr,
4369 13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4370 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4371 " failed\n", ha->host_no, __func__));
4372 ret = QLA_ERROR;
4373 goto exit_boot_info_free;
4374 }
4375 /* Check Boot Mode */
4376 if (!(buf[1] & 0x07)) {
4377 DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4378 " : 0x%x\n", buf[1]));
4379 ret = QLA_ERROR;
4380 goto exit_boot_info_free;
4381 }
4382
4383 /* get primary valid target index */
4384 if (buf[2] & BIT_7)
4385 ddb_index[0] = buf[2] & 0x7f;
4386
4387 /* get secondary valid target index */
4388 if (buf[11] & BIT_7)
4389 ddb_index[1] = buf[11] & 0x7f;
4390 } else {
4391 ret = QLA_ERROR;
4392 goto exit_boot_info;
4393 }
4394
4395 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4396 " target ID %d\n", __func__, ddb_index[0],
4397 ddb_index[1]));
4398
4399 exit_boot_info_free:
4400 dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4401 exit_boot_info:
4402 ha->pri_ddb_idx = ddb_index[0];
4403 ha->sec_ddb_idx = ddb_index[1];
4404 return ret;
4405 }
4406
4407 /**
4408 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4409 * @ha: pointer to adapter structure
4410 * @username: CHAP username to be returned
4411 * @password: CHAP password to be returned
4412 *
4413 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4414 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4415 * So from the CHAP cache find the first BIDI CHAP entry and set it
4416 * to the boot record in sysfs.
4417 **/
qla4xxx_get_bidi_chap(struct scsi_qla_host * ha,char * username,char * password)4418 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4419 char *password)
4420 {
4421 int i, ret = -EINVAL;
4422 int max_chap_entries = 0;
4423 struct ql4_chap_table *chap_table;
4424
4425 if (is_qla80XX(ha))
4426 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4427 sizeof(struct ql4_chap_table);
4428 else
4429 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4430
4431 if (!ha->chap_list) {
4432 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4433 return ret;
4434 }
4435
4436 mutex_lock(&ha->chap_sem);
4437 for (i = 0; i < max_chap_entries; i++) {
4438 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4439 if (chap_table->cookie !=
4440 __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4441 continue;
4442 }
4443
4444 if (chap_table->flags & BIT_7) /* local */
4445 continue;
4446
4447 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4448 continue;
4449
4450 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4451 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4452 ret = 0;
4453 break;
4454 }
4455 mutex_unlock(&ha->chap_sem);
4456
4457 return ret;
4458 }
4459
4460
qla4xxx_get_boot_target(struct scsi_qla_host * ha,struct ql4_boot_session_info * boot_sess,uint16_t ddb_index)4461 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4462 struct ql4_boot_session_info *boot_sess,
4463 uint16_t ddb_index)
4464 {
4465 struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4466 struct dev_db_entry *fw_ddb_entry;
4467 dma_addr_t fw_ddb_entry_dma;
4468 uint16_t idx;
4469 uint16_t options;
4470 int ret = QLA_SUCCESS;
4471
4472 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4473 &fw_ddb_entry_dma, GFP_KERNEL);
4474 if (!fw_ddb_entry) {
4475 DEBUG2(ql4_printk(KERN_ERR, ha,
4476 "%s: Unable to allocate dma buffer.\n",
4477 __func__));
4478 ret = QLA_ERROR;
4479 return ret;
4480 }
4481
4482 if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4483 fw_ddb_entry_dma, ddb_index)) {
4484 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4485 "index [%d]\n", __func__, ddb_index));
4486 ret = QLA_ERROR;
4487 goto exit_boot_target;
4488 }
4489
4490 /* Update target name and IP from DDB */
4491 memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4492 min(sizeof(boot_sess->target_name),
4493 sizeof(fw_ddb_entry->iscsi_name)));
4494
4495 options = le16_to_cpu(fw_ddb_entry->options);
4496 if (options & DDB_OPT_IPV6_DEVICE) {
4497 memcpy(&boot_conn->dest_ipaddr.ip_address,
4498 &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4499 } else {
4500 boot_conn->dest_ipaddr.ip_type = 0x1;
4501 memcpy(&boot_conn->dest_ipaddr.ip_address,
4502 &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4503 }
4504
4505 boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4506
4507 /* update chap information */
4508 idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4509
4510 if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4511
4512 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4513
4514 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4515 target_chap_name,
4516 (char *)&boot_conn->chap.target_secret,
4517 idx);
4518 if (ret) {
4519 ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4520 ret = QLA_ERROR;
4521 goto exit_boot_target;
4522 }
4523
4524 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4525 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4526 }
4527
4528 if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4529
4530 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4531
4532 ret = qla4xxx_get_bidi_chap(ha,
4533 (char *)&boot_conn->chap.intr_chap_name,
4534 (char *)&boot_conn->chap.intr_secret);
4535
4536 if (ret) {
4537 ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4538 ret = QLA_ERROR;
4539 goto exit_boot_target;
4540 }
4541
4542 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4543 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4544 }
4545
4546 exit_boot_target:
4547 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4548 fw_ddb_entry, fw_ddb_entry_dma);
4549 return ret;
4550 }
4551
qla4xxx_get_boot_info(struct scsi_qla_host * ha)4552 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4553 {
4554 uint16_t ddb_index[2];
4555 int ret = QLA_ERROR;
4556 int rval;
4557
4558 memset(ddb_index, 0, sizeof(ddb_index));
4559 ddb_index[0] = 0xffff;
4560 ddb_index[1] = 0xffff;
4561 ret = get_fw_boot_info(ha, ddb_index);
4562 if (ret != QLA_SUCCESS) {
4563 DEBUG2(ql4_printk(KERN_INFO, ha,
4564 "%s: No boot target configured.\n", __func__));
4565 return ret;
4566 }
4567
4568 if (ql4xdisablesysfsboot)
4569 return QLA_SUCCESS;
4570
4571 if (ddb_index[0] == 0xffff)
4572 goto sec_target;
4573
4574 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4575 ddb_index[0]);
4576 if (rval != QLA_SUCCESS) {
4577 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4578 "configured\n", __func__));
4579 } else
4580 ret = QLA_SUCCESS;
4581
4582 sec_target:
4583 if (ddb_index[1] == 0xffff)
4584 goto exit_get_boot_info;
4585
4586 rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4587 ddb_index[1]);
4588 if (rval != QLA_SUCCESS) {
4589 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4590 " configured\n", __func__));
4591 } else
4592 ret = QLA_SUCCESS;
4593
4594 exit_get_boot_info:
4595 return ret;
4596 }
4597
qla4xxx_setup_boot_info(struct scsi_qla_host * ha)4598 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4599 {
4600 struct iscsi_boot_kobj *boot_kobj;
4601
4602 if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4603 return QLA_ERROR;
4604
4605 if (ql4xdisablesysfsboot) {
4606 ql4_printk(KERN_INFO, ha,
4607 "%s: syfsboot disabled - driver will trigger login "
4608 "and publish session for discovery .\n", __func__);
4609 return QLA_SUCCESS;
4610 }
4611
4612
4613 ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4614 if (!ha->boot_kset)
4615 goto kset_free;
4616
4617 if (!scsi_host_get(ha->host))
4618 goto kset_free;
4619 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4620 qla4xxx_show_boot_tgt_pri_info,
4621 qla4xxx_tgt_get_attr_visibility,
4622 qla4xxx_boot_release);
4623 if (!boot_kobj)
4624 goto put_host;
4625
4626 if (!scsi_host_get(ha->host))
4627 goto kset_free;
4628 boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4629 qla4xxx_show_boot_tgt_sec_info,
4630 qla4xxx_tgt_get_attr_visibility,
4631 qla4xxx_boot_release);
4632 if (!boot_kobj)
4633 goto put_host;
4634
4635 if (!scsi_host_get(ha->host))
4636 goto kset_free;
4637 boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4638 qla4xxx_show_boot_ini_info,
4639 qla4xxx_ini_get_attr_visibility,
4640 qla4xxx_boot_release);
4641 if (!boot_kobj)
4642 goto put_host;
4643
4644 if (!scsi_host_get(ha->host))
4645 goto kset_free;
4646 boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4647 qla4xxx_show_boot_eth_info,
4648 qla4xxx_eth_get_attr_visibility,
4649 qla4xxx_boot_release);
4650 if (!boot_kobj)
4651 goto put_host;
4652
4653 return QLA_SUCCESS;
4654
4655 put_host:
4656 scsi_host_put(ha->host);
4657 kset_free:
4658 iscsi_boot_destroy_kset(ha->boot_kset);
4659 return -ENOMEM;
4660 }
4661
4662
4663 /**
4664 * qla4xxx_create chap_list - Create CHAP list from FLASH
4665 * @ha: pointer to adapter structure
4666 *
4667 * Read flash and make a list of CHAP entries, during login when a CHAP entry
4668 * is received, it will be checked in this list. If entry exist then the CHAP
4669 * entry index is set in the DDB. If CHAP entry does not exist in this list
4670 * then a new entry is added in FLASH in CHAP table and the index obtained is
4671 * used in the DDB.
4672 **/
qla4xxx_create_chap_list(struct scsi_qla_host * ha)4673 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4674 {
4675 int rval = 0;
4676 uint8_t *chap_flash_data = NULL;
4677 uint32_t offset;
4678 dma_addr_t chap_dma;
4679 uint32_t chap_size = 0;
4680
4681 if (is_qla40XX(ha))
4682 chap_size = MAX_CHAP_ENTRIES_40XX *
4683 sizeof(struct ql4_chap_table);
4684 else /* Single region contains CHAP info for both
4685 * ports which is divided into half for each port.
4686 */
4687 chap_size = ha->hw.flt_chap_size / 2;
4688
4689 chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4690 &chap_dma, GFP_KERNEL);
4691 if (!chap_flash_data) {
4692 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4693 return;
4694 }
4695 if (is_qla40XX(ha))
4696 offset = FLASH_CHAP_OFFSET;
4697 else {
4698 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4699 if (ha->port_num == 1)
4700 offset += chap_size;
4701 }
4702
4703 rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4704 if (rval != QLA_SUCCESS)
4705 goto exit_chap_list;
4706
4707 if (ha->chap_list == NULL)
4708 ha->chap_list = vmalloc(chap_size);
4709 if (ha->chap_list == NULL) {
4710 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4711 goto exit_chap_list;
4712 }
4713
4714 memcpy(ha->chap_list, chap_flash_data, chap_size);
4715
4716 exit_chap_list:
4717 dma_free_coherent(&ha->pdev->dev, chap_size,
4718 chap_flash_data, chap_dma);
4719 }
4720
qla4xxx_get_param_ddb(struct ddb_entry * ddb_entry,struct ql4_tuple_ddb * tddb)4721 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4722 struct ql4_tuple_ddb *tddb)
4723 {
4724 struct scsi_qla_host *ha;
4725 struct iscsi_cls_session *cls_sess;
4726 struct iscsi_cls_conn *cls_conn;
4727 struct iscsi_session *sess;
4728 struct iscsi_conn *conn;
4729
4730 DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4731 ha = ddb_entry->ha;
4732 cls_sess = ddb_entry->sess;
4733 sess = cls_sess->dd_data;
4734 cls_conn = ddb_entry->conn;
4735 conn = cls_conn->dd_data;
4736
4737 tddb->tpgt = sess->tpgt;
4738 tddb->port = conn->persistent_port;
4739 strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4740 strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4741 }
4742
qla4xxx_convert_param_ddb(struct dev_db_entry * fw_ddb_entry,struct ql4_tuple_ddb * tddb,uint8_t * flash_isid)4743 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4744 struct ql4_tuple_ddb *tddb,
4745 uint8_t *flash_isid)
4746 {
4747 uint16_t options = 0;
4748
4749 tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4750 memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4751 min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4752
4753 options = le16_to_cpu(fw_ddb_entry->options);
4754 if (options & DDB_OPT_IPV6_DEVICE)
4755 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4756 else
4757 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4758
4759 tddb->port = le16_to_cpu(fw_ddb_entry->port);
4760
4761 if (flash_isid == NULL)
4762 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4763 sizeof(tddb->isid));
4764 else
4765 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4766 }
4767
qla4xxx_compare_tuple_ddb(struct scsi_qla_host * ha,struct ql4_tuple_ddb * old_tddb,struct ql4_tuple_ddb * new_tddb,uint8_t is_isid_compare)4768 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4769 struct ql4_tuple_ddb *old_tddb,
4770 struct ql4_tuple_ddb *new_tddb,
4771 uint8_t is_isid_compare)
4772 {
4773 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4774 return QLA_ERROR;
4775
4776 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4777 return QLA_ERROR;
4778
4779 if (old_tddb->port != new_tddb->port)
4780 return QLA_ERROR;
4781
4782 /* For multi sessions, driver generates the ISID, so do not compare
4783 * ISID in reset path since it would be a comparison between the
4784 * driver generated ISID and firmware generated ISID. This could
4785 * lead to adding duplicated DDBs in the list as driver generated
4786 * ISID would not match firmware generated ISID.
4787 */
4788 if (is_isid_compare) {
4789 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4790 "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4791 __func__, old_tddb->isid[5], old_tddb->isid[4],
4792 old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4793 old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4794 new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4795 new_tddb->isid[0]));
4796
4797 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4798 sizeof(old_tddb->isid)))
4799 return QLA_ERROR;
4800 }
4801
4802 DEBUG2(ql4_printk(KERN_INFO, ha,
4803 "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4804 old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4805 old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4806 new_tddb->ip_addr, new_tddb->iscsi_name));
4807
4808 return QLA_SUCCESS;
4809 }
4810
qla4xxx_is_session_exists(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry)4811 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4812 struct dev_db_entry *fw_ddb_entry)
4813 {
4814 struct ddb_entry *ddb_entry;
4815 struct ql4_tuple_ddb *fw_tddb = NULL;
4816 struct ql4_tuple_ddb *tmp_tddb = NULL;
4817 int idx;
4818 int ret = QLA_ERROR;
4819
4820 fw_tddb = vzalloc(sizeof(*fw_tddb));
4821 if (!fw_tddb) {
4822 DEBUG2(ql4_printk(KERN_WARNING, ha,
4823 "Memory Allocation failed.\n"));
4824 ret = QLA_SUCCESS;
4825 goto exit_check;
4826 }
4827
4828 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4829 if (!tmp_tddb) {
4830 DEBUG2(ql4_printk(KERN_WARNING, ha,
4831 "Memory Allocation failed.\n"));
4832 ret = QLA_SUCCESS;
4833 goto exit_check;
4834 }
4835
4836 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4837
4838 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4839 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4840 if (ddb_entry == NULL)
4841 continue;
4842
4843 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4844 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4845 ret = QLA_SUCCESS; /* found */
4846 goto exit_check;
4847 }
4848 }
4849
4850 exit_check:
4851 if (fw_tddb)
4852 vfree(fw_tddb);
4853 if (tmp_tddb)
4854 vfree(tmp_tddb);
4855 return ret;
4856 }
4857
4858 /**
4859 * qla4xxx_check_existing_isid - check if target with same isid exist
4860 * in target list
4861 * @list_nt: list of target
4862 * @isid: isid to check
4863 *
4864 * This routine return QLA_SUCCESS if target with same isid exist
4865 **/
qla4xxx_check_existing_isid(struct list_head * list_nt,uint8_t * isid)4866 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4867 {
4868 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4869 struct dev_db_entry *fw_ddb_entry;
4870
4871 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4872 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4873
4874 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4875 sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4876 return QLA_SUCCESS;
4877 }
4878 }
4879 return QLA_ERROR;
4880 }
4881
4882 /**
4883 * qla4xxx_update_isid - compare ddbs and updated isid
4884 * @ha: Pointer to host adapter structure.
4885 * @list_nt: list of nt target
4886 * @fw_ddb_entry: firmware ddb entry
4887 *
4888 * This routine update isid if ddbs have same iqn, same isid and
4889 * different IP addr.
4890 * Return QLA_SUCCESS if isid is updated.
4891 **/
qla4xxx_update_isid(struct scsi_qla_host * ha,struct list_head * list_nt,struct dev_db_entry * fw_ddb_entry)4892 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4893 struct list_head *list_nt,
4894 struct dev_db_entry *fw_ddb_entry)
4895 {
4896 uint8_t base_value, i;
4897
4898 base_value = fw_ddb_entry->isid[1] & 0x1f;
4899 for (i = 0; i < 8; i++) {
4900 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4901 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4902 break;
4903 }
4904
4905 if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4906 return QLA_ERROR;
4907
4908 return QLA_SUCCESS;
4909 }
4910
4911 /**
4912 * qla4xxx_should_update_isid - check if isid need to update
4913 * @ha: Pointer to host adapter structure.
4914 * @old_tddb: ddb tuple
4915 * @new_tddb: ddb tuple
4916 *
4917 * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4918 * same isid
4919 **/
qla4xxx_should_update_isid(struct scsi_qla_host * ha,struct ql4_tuple_ddb * old_tddb,struct ql4_tuple_ddb * new_tddb)4920 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4921 struct ql4_tuple_ddb *old_tddb,
4922 struct ql4_tuple_ddb *new_tddb)
4923 {
4924 if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4925 /* Same ip */
4926 if (old_tddb->port == new_tddb->port)
4927 return QLA_ERROR;
4928 }
4929
4930 if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4931 /* different iqn */
4932 return QLA_ERROR;
4933
4934 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4935 sizeof(old_tddb->isid)))
4936 /* different isid */
4937 return QLA_ERROR;
4938
4939 return QLA_SUCCESS;
4940 }
4941
4942 /**
4943 * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4944 * @ha: Pointer to host adapter structure.
4945 * @list_nt: list of nt target.
4946 * @fw_ddb_entry: firmware ddb entry.
4947 *
4948 * This routine check if fw_ddb_entry already exists in list_nt to avoid
4949 * duplicate ddb in list_nt.
4950 * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4951 * Note: This function also update isid of DDB if required.
4952 **/
4953
qla4xxx_is_flash_ddb_exists(struct scsi_qla_host * ha,struct list_head * list_nt,struct dev_db_entry * fw_ddb_entry)4954 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4955 struct list_head *list_nt,
4956 struct dev_db_entry *fw_ddb_entry)
4957 {
4958 struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4959 struct ql4_tuple_ddb *fw_tddb = NULL;
4960 struct ql4_tuple_ddb *tmp_tddb = NULL;
4961 int rval, ret = QLA_ERROR;
4962
4963 fw_tddb = vzalloc(sizeof(*fw_tddb));
4964 if (!fw_tddb) {
4965 DEBUG2(ql4_printk(KERN_WARNING, ha,
4966 "Memory Allocation failed.\n"));
4967 ret = QLA_SUCCESS;
4968 goto exit_check;
4969 }
4970
4971 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4972 if (!tmp_tddb) {
4973 DEBUG2(ql4_printk(KERN_WARNING, ha,
4974 "Memory Allocation failed.\n"));
4975 ret = QLA_SUCCESS;
4976 goto exit_check;
4977 }
4978
4979 qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4980
4981 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4982 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4983 nt_ddb_idx->flash_isid);
4984 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4985 /* found duplicate ddb */
4986 if (ret == QLA_SUCCESS)
4987 goto exit_check;
4988 }
4989
4990 list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4991 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4992
4993 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4994 if (ret == QLA_SUCCESS) {
4995 rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4996 if (rval == QLA_SUCCESS)
4997 ret = QLA_ERROR;
4998 else
4999 ret = QLA_SUCCESS;
5000
5001 goto exit_check;
5002 }
5003 }
5004
5005 exit_check:
5006 if (fw_tddb)
5007 vfree(fw_tddb);
5008 if (tmp_tddb)
5009 vfree(tmp_tddb);
5010 return ret;
5011 }
5012
qla4xxx_free_ddb_list(struct list_head * list_ddb)5013 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
5014 {
5015 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5016
5017 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5018 list_del_init(&ddb_idx->list);
5019 vfree(ddb_idx);
5020 }
5021 }
5022
qla4xxx_get_ep_fwdb(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry)5023 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
5024 struct dev_db_entry *fw_ddb_entry)
5025 {
5026 struct iscsi_endpoint *ep;
5027 struct sockaddr_in *addr;
5028 struct sockaddr_in6 *addr6;
5029 struct sockaddr *t_addr;
5030 struct sockaddr_storage *dst_addr;
5031 char *ip;
5032
5033 /* TODO: need to destroy on unload iscsi_endpoint*/
5034 dst_addr = vmalloc(sizeof(*dst_addr));
5035 if (!dst_addr)
5036 return NULL;
5037
5038 if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
5039 t_addr = (struct sockaddr *)dst_addr;
5040 t_addr->sa_family = AF_INET6;
5041 addr6 = (struct sockaddr_in6 *)dst_addr;
5042 ip = (char *)&addr6->sin6_addr;
5043 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
5044 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
5045
5046 } else {
5047 t_addr = (struct sockaddr *)dst_addr;
5048 t_addr->sa_family = AF_INET;
5049 addr = (struct sockaddr_in *)dst_addr;
5050 ip = (char *)&addr->sin_addr;
5051 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
5052 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
5053 }
5054
5055 ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
5056 vfree(dst_addr);
5057 return ep;
5058 }
5059
qla4xxx_verify_boot_idx(struct scsi_qla_host * ha,uint16_t idx)5060 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
5061 {
5062 if (ql4xdisablesysfsboot)
5063 return QLA_SUCCESS;
5064 if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
5065 return QLA_ERROR;
5066 return QLA_SUCCESS;
5067 }
5068
qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host * ha,struct ddb_entry * ddb_entry,uint16_t idx)5069 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
5070 struct ddb_entry *ddb_entry,
5071 uint16_t idx)
5072 {
5073 uint16_t def_timeout;
5074
5075 ddb_entry->ddb_type = FLASH_DDB;
5076 ddb_entry->fw_ddb_index = INVALID_ENTRY;
5077 ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
5078 ddb_entry->ha = ha;
5079 ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
5080 ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
5081
5082 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
5083 atomic_set(&ddb_entry->relogin_timer, 0);
5084 atomic_set(&ddb_entry->relogin_retry_count, 0);
5085 def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
5086 ddb_entry->default_relogin_timeout =
5087 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
5088 def_timeout : LOGIN_TOV;
5089 ddb_entry->default_time2wait =
5090 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
5091
5092 if (ql4xdisablesysfsboot &&
5093 (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
5094 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
5095 }
5096
qla4xxx_wait_for_ip_configuration(struct scsi_qla_host * ha)5097 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
5098 {
5099 uint32_t idx = 0;
5100 uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
5101 uint32_t sts[MBOX_REG_COUNT];
5102 uint32_t ip_state;
5103 unsigned long wtime;
5104 int ret;
5105
5106 wtime = jiffies + (HZ * IP_CONFIG_TOV);
5107 do {
5108 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
5109 if (ip_idx[idx] == -1)
5110 continue;
5111
5112 ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
5113
5114 if (ret == QLA_ERROR) {
5115 ip_idx[idx] = -1;
5116 continue;
5117 }
5118
5119 ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
5120
5121 DEBUG2(ql4_printk(KERN_INFO, ha,
5122 "Waiting for IP state for idx = %d, state = 0x%x\n",
5123 ip_idx[idx], ip_state));
5124 if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
5125 ip_state == IP_ADDRSTATE_INVALID ||
5126 ip_state == IP_ADDRSTATE_PREFERRED ||
5127 ip_state == IP_ADDRSTATE_DEPRICATED ||
5128 ip_state == IP_ADDRSTATE_DISABLING)
5129 ip_idx[idx] = -1;
5130 }
5131
5132 /* Break if all IP states checked */
5133 if ((ip_idx[0] == -1) &&
5134 (ip_idx[1] == -1) &&
5135 (ip_idx[2] == -1) &&
5136 (ip_idx[3] == -1))
5137 break;
5138 schedule_timeout_uninterruptible(HZ);
5139 } while (time_after(wtime, jiffies));
5140 }
5141
qla4xxx_build_st_list(struct scsi_qla_host * ha,struct list_head * list_st)5142 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
5143 struct list_head *list_st)
5144 {
5145 struct qla_ddb_index *st_ddb_idx;
5146 int max_ddbs;
5147 int fw_idx_size;
5148 struct dev_db_entry *fw_ddb_entry;
5149 dma_addr_t fw_ddb_dma;
5150 int ret;
5151 uint32_t idx = 0, next_idx = 0;
5152 uint32_t state = 0, conn_err = 0;
5153 uint16_t conn_id = 0;
5154
5155 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5156 &fw_ddb_dma);
5157 if (fw_ddb_entry == NULL) {
5158 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5159 goto exit_st_list;
5160 }
5161
5162 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5163 MAX_DEV_DB_ENTRIES;
5164 fw_idx_size = sizeof(struct qla_ddb_index);
5165
5166 for (idx = 0; idx < max_ddbs; idx = next_idx) {
5167 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5168 NULL, &next_idx, &state,
5169 &conn_err, NULL, &conn_id);
5170 if (ret == QLA_ERROR)
5171 break;
5172
5173 /* Ignore DDB if invalid state (unassigned) */
5174 if (state == DDB_DS_UNASSIGNED)
5175 goto continue_next_st;
5176
5177 /* Check if ST, add to the list_st */
5178 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
5179 goto continue_next_st;
5180
5181 st_ddb_idx = vzalloc(fw_idx_size);
5182 if (!st_ddb_idx)
5183 break;
5184
5185 st_ddb_idx->fw_ddb_idx = idx;
5186
5187 list_add_tail(&st_ddb_idx->list, list_st);
5188 continue_next_st:
5189 if (next_idx == 0)
5190 break;
5191 }
5192
5193 exit_st_list:
5194 if (fw_ddb_entry)
5195 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5196 }
5197
5198 /**
5199 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
5200 * @ha: pointer to adapter structure
5201 * @list_ddb: List from which failed ddb to be removed
5202 *
5203 * Iterate over the list of DDBs and find and remove DDBs that are either in
5204 * no connection active state or failed state
5205 **/
qla4xxx_remove_failed_ddb(struct scsi_qla_host * ha,struct list_head * list_ddb)5206 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
5207 struct list_head *list_ddb)
5208 {
5209 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5210 uint32_t next_idx = 0;
5211 uint32_t state = 0, conn_err = 0;
5212 int ret;
5213
5214 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5215 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
5216 NULL, 0, NULL, &next_idx, &state,
5217 &conn_err, NULL, NULL);
5218 if (ret == QLA_ERROR)
5219 continue;
5220
5221 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5222 state == DDB_DS_SESSION_FAILED) {
5223 list_del_init(&ddb_idx->list);
5224 vfree(ddb_idx);
5225 }
5226 }
5227 }
5228
qla4xxx_sess_conn_setup(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry,int is_reset,uint16_t idx)5229 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
5230 struct dev_db_entry *fw_ddb_entry,
5231 int is_reset, uint16_t idx)
5232 {
5233 struct iscsi_cls_session *cls_sess;
5234 struct iscsi_session *sess;
5235 struct iscsi_cls_conn *cls_conn;
5236 struct iscsi_endpoint *ep;
5237 uint16_t cmds_max = 32;
5238 uint16_t conn_id = 0;
5239 uint32_t initial_cmdsn = 0;
5240 int ret = QLA_SUCCESS;
5241
5242 struct ddb_entry *ddb_entry = NULL;
5243
5244 /* Create session object, with INVALID_ENTRY,
5245 * the targer_id would get set when we issue the login
5246 */
5247 cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
5248 cmds_max, sizeof(struct ddb_entry),
5249 sizeof(struct ql4_task_data),
5250 initial_cmdsn, INVALID_ENTRY);
5251 if (!cls_sess) {
5252 ret = QLA_ERROR;
5253 goto exit_setup;
5254 }
5255
5256 /*
5257 * so calling module_put function to decrement the
5258 * reference count.
5259 **/
5260 module_put(qla4xxx_iscsi_transport.owner);
5261 sess = cls_sess->dd_data;
5262 ddb_entry = sess->dd_data;
5263 ddb_entry->sess = cls_sess;
5264
5265 cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
5266 memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
5267 sizeof(struct dev_db_entry));
5268
5269 qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
5270
5271 cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
5272
5273 if (!cls_conn) {
5274 ret = QLA_ERROR;
5275 goto exit_setup;
5276 }
5277
5278 ddb_entry->conn = cls_conn;
5279
5280 /* Setup ep, for displaying attributes in sysfs */
5281 ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
5282 if (ep) {
5283 ep->conn = cls_conn;
5284 cls_conn->ep = ep;
5285 } else {
5286 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
5287 ret = QLA_ERROR;
5288 goto exit_setup;
5289 }
5290
5291 /* Update sess/conn params */
5292 qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
5293
5294 if (is_reset == RESET_ADAPTER) {
5295 iscsi_block_session(cls_sess);
5296 /* Use the relogin path to discover new devices
5297 * by short-circuting the logic of setting
5298 * timer to relogin - instead set the flags
5299 * to initiate login right away.
5300 */
5301 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
5302 set_bit(DF_RELOGIN, &ddb_entry->flags);
5303 }
5304
5305 exit_setup:
5306 return ret;
5307 }
5308
qla4xxx_build_nt_list(struct scsi_qla_host * ha,struct list_head * list_nt,int is_reset)5309 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
5310 struct list_head *list_nt, int is_reset)
5311 {
5312 struct dev_db_entry *fw_ddb_entry;
5313 dma_addr_t fw_ddb_dma;
5314 int max_ddbs;
5315 int fw_idx_size;
5316 int ret;
5317 uint32_t idx = 0, next_idx = 0;
5318 uint32_t state = 0, conn_err = 0;
5319 uint16_t conn_id = 0;
5320 struct qla_ddb_index *nt_ddb_idx;
5321
5322 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5323 &fw_ddb_dma);
5324 if (fw_ddb_entry == NULL) {
5325 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5326 goto exit_nt_list;
5327 }
5328 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5329 MAX_DEV_DB_ENTRIES;
5330 fw_idx_size = sizeof(struct qla_ddb_index);
5331
5332 for (idx = 0; idx < max_ddbs; idx = next_idx) {
5333 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5334 NULL, &next_idx, &state,
5335 &conn_err, NULL, &conn_id);
5336 if (ret == QLA_ERROR)
5337 break;
5338
5339 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
5340 goto continue_next_nt;
5341
5342 /* Check if NT, then add to list it */
5343 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
5344 goto continue_next_nt;
5345
5346 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5347 state == DDB_DS_SESSION_FAILED))
5348 goto continue_next_nt;
5349
5350 DEBUG2(ql4_printk(KERN_INFO, ha,
5351 "Adding DDB to session = 0x%x\n", idx));
5352 if (is_reset == INIT_ADAPTER) {
5353 nt_ddb_idx = vmalloc(fw_idx_size);
5354 if (!nt_ddb_idx)
5355 break;
5356
5357 nt_ddb_idx->fw_ddb_idx = idx;
5358
5359 /* Copy original isid as it may get updated in function
5360 * qla4xxx_update_isid(). We need original isid in
5361 * function qla4xxx_compare_tuple_ddb to find duplicate
5362 * target */
5363 memcpy(&nt_ddb_idx->flash_isid[0],
5364 &fw_ddb_entry->isid[0],
5365 sizeof(nt_ddb_idx->flash_isid));
5366
5367 ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5368 fw_ddb_entry);
5369 if (ret == QLA_SUCCESS) {
5370 /* free nt_ddb_idx and do not add to list_nt */
5371 vfree(nt_ddb_idx);
5372 goto continue_next_nt;
5373 }
5374
5375 /* Copy updated isid */
5376 memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5377 sizeof(struct dev_db_entry));
5378
5379 list_add_tail(&nt_ddb_idx->list, list_nt);
5380 } else if (is_reset == RESET_ADAPTER) {
5381 if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5382 QLA_SUCCESS)
5383 goto continue_next_nt;
5384 }
5385
5386 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
5387 if (ret == QLA_ERROR)
5388 goto exit_nt_list;
5389
5390 continue_next_nt:
5391 if (next_idx == 0)
5392 break;
5393 }
5394
5395 exit_nt_list:
5396 if (fw_ddb_entry)
5397 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5398 }
5399
qla4xxx_build_new_nt_list(struct scsi_qla_host * ha,struct list_head * list_nt)5400 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
5401 struct list_head *list_nt)
5402 {
5403 struct dev_db_entry *fw_ddb_entry;
5404 dma_addr_t fw_ddb_dma;
5405 int max_ddbs;
5406 int fw_idx_size;
5407 int ret;
5408 uint32_t idx = 0, next_idx = 0;
5409 uint32_t state = 0, conn_err = 0;
5410 uint16_t conn_id = 0;
5411 struct qla_ddb_index *nt_ddb_idx;
5412
5413 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5414 &fw_ddb_dma);
5415 if (fw_ddb_entry == NULL) {
5416 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5417 goto exit_new_nt_list;
5418 }
5419 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5420 MAX_DEV_DB_ENTRIES;
5421 fw_idx_size = sizeof(struct qla_ddb_index);
5422
5423 for (idx = 0; idx < max_ddbs; idx = next_idx) {
5424 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5425 NULL, &next_idx, &state,
5426 &conn_err, NULL, &conn_id);
5427 if (ret == QLA_ERROR)
5428 break;
5429
5430 /* Check if NT, then add it to list */
5431 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5432 goto continue_next_new_nt;
5433
5434 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
5435 goto continue_next_new_nt;
5436
5437 DEBUG2(ql4_printk(KERN_INFO, ha,
5438 "Adding DDB to session = 0x%x\n", idx));
5439
5440 nt_ddb_idx = vmalloc(fw_idx_size);
5441 if (!nt_ddb_idx)
5442 break;
5443
5444 nt_ddb_idx->fw_ddb_idx = idx;
5445
5446 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5447 if (ret == QLA_SUCCESS) {
5448 /* free nt_ddb_idx and do not add to list_nt */
5449 vfree(nt_ddb_idx);
5450 goto continue_next_new_nt;
5451 }
5452
5453 list_add_tail(&nt_ddb_idx->list, list_nt);
5454
5455 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5456 idx);
5457 if (ret == QLA_ERROR)
5458 goto exit_new_nt_list;
5459
5460 continue_next_new_nt:
5461 if (next_idx == 0)
5462 break;
5463 }
5464
5465 exit_new_nt_list:
5466 if (fw_ddb_entry)
5467 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5468 }
5469
5470 /**
5471 * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
5472 * @dev: dev associated with the sysfs entry
5473 * @data: pointer to flashnode session object
5474 *
5475 * Returns:
5476 * 1: if flashnode entry is non-persistent
5477 * 0: if flashnode entry is persistent
5478 **/
qla4xxx_sysfs_ddb_is_non_persistent(struct device * dev,void * data)5479 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
5480 {
5481 struct iscsi_bus_flash_session *fnode_sess;
5482
5483 if (!iscsi_flashnode_bus_match(dev, NULL))
5484 return 0;
5485
5486 fnode_sess = iscsi_dev_to_flash_session(dev);
5487
5488 return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
5489 }
5490
5491 /**
5492 * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
5493 * @ha: pointer to host
5494 * @fw_ddb_entry: flash ddb data
5495 * @idx: target index
5496 * @user: if set then this call is made from userland else from kernel
5497 *
5498 * Returns:
5499 * On sucess: QLA_SUCCESS
5500 * On failure: QLA_ERROR
5501 *
5502 * This create separate sysfs entries for session and connection attributes of
5503 * the given fw ddb entry.
5504 * If this is invoked as a result of a userspace call then the entry is marked
5505 * as nonpersistent using flash_state field.
5506 **/
qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry,uint16_t * idx,int user)5507 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
5508 struct dev_db_entry *fw_ddb_entry,
5509 uint16_t *idx, int user)
5510 {
5511 struct iscsi_bus_flash_session *fnode_sess = NULL;
5512 struct iscsi_bus_flash_conn *fnode_conn = NULL;
5513 int rc = QLA_ERROR;
5514
5515 fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
5516 &qla4xxx_iscsi_transport, 0);
5517 if (!fnode_sess) {
5518 ql4_printk(KERN_ERR, ha,
5519 "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
5520 __func__, *idx, ha->host_no);
5521 goto exit_tgt_create;
5522 }
5523
5524 fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
5525 &qla4xxx_iscsi_transport, 0);
5526 if (!fnode_conn) {
5527 ql4_printk(KERN_ERR, ha,
5528 "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
5529 __func__, *idx, ha->host_no);
5530 goto free_sess;
5531 }
5532
5533 if (user) {
5534 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
5535 } else {
5536 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5537
5538 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
5539 fnode_sess->is_boot_target = 1;
5540 else
5541 fnode_sess->is_boot_target = 0;
5542 }
5543
5544 rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
5545 fw_ddb_entry);
5546
5547 ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5548 __func__, fnode_sess->dev.kobj.name);
5549
5550 ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5551 __func__, fnode_conn->dev.kobj.name);
5552
5553 return QLA_SUCCESS;
5554
5555 free_sess:
5556 iscsi_destroy_flashnode_sess(fnode_sess);
5557
5558 exit_tgt_create:
5559 return QLA_ERROR;
5560 }
5561
5562 /**
5563 * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
5564 * @shost: pointer to host
5565 * @buf: type of ddb entry (ipv4/ipv6)
5566 * @len: length of buf
5567 *
5568 * This creates new ddb entry in the flash by finding first free index and
5569 * storing default ddb there. And then create sysfs entry for the new ddb entry.
5570 **/
qla4xxx_sysfs_ddb_add(struct Scsi_Host * shost,const char * buf,int len)5571 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
5572 int len)
5573 {
5574 struct scsi_qla_host *ha = to_qla_host(shost);
5575 struct dev_db_entry *fw_ddb_entry = NULL;
5576 dma_addr_t fw_ddb_entry_dma;
5577 struct device *dev;
5578 uint16_t idx = 0;
5579 uint16_t max_ddbs = 0;
5580 uint32_t options = 0;
5581 uint32_t rval = QLA_ERROR;
5582
5583 if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
5584 strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
5585 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
5586 __func__));
5587 goto exit_ddb_add;
5588 }
5589
5590 max_ddbs = is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
5591 MAX_DEV_DB_ENTRIES;
5592
5593 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5594 &fw_ddb_entry_dma, GFP_KERNEL);
5595 if (!fw_ddb_entry) {
5596 DEBUG2(ql4_printk(KERN_ERR, ha,
5597 "%s: Unable to allocate dma buffer\n",
5598 __func__));
5599 goto exit_ddb_add;
5600 }
5601
5602 dev = iscsi_find_flashnode_sess(ha->host, NULL,
5603 qla4xxx_sysfs_ddb_is_non_persistent);
5604 if (dev) {
5605 ql4_printk(KERN_ERR, ha,
5606 "%s: A non-persistent entry %s found\n",
5607 __func__, dev->kobj.name);
5608 put_device(dev);
5609 goto exit_ddb_add;
5610 }
5611
5612 for (idx = 0; idx < max_ddbs; idx++) {
5613 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
5614 fw_ddb_entry_dma, idx))
5615 break;
5616 }
5617
5618 if (idx == max_ddbs)
5619 goto exit_ddb_add;
5620
5621 if (!strncasecmp("ipv6", buf, 4))
5622 options |= IPV6_DEFAULT_DDB_ENTRY;
5623
5624 rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5625 if (rval == QLA_ERROR)
5626 goto exit_ddb_add;
5627
5628 rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
5629
5630 exit_ddb_add:
5631 if (fw_ddb_entry)
5632 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5633 fw_ddb_entry, fw_ddb_entry_dma);
5634 if (rval == QLA_SUCCESS)
5635 return idx;
5636 else
5637 return -EIO;
5638 }
5639
5640 /**
5641 * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
5642 * @fnode_sess: pointer to session attrs of flash ddb entry
5643 * @fnode_conn: pointer to connection attrs of flash ddb entry
5644 *
5645 * This writes the contents of target ddb buffer to Flash with a valid cookie
5646 * value in order to make the ddb entry persistent.
5647 **/
qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session * fnode_sess,struct iscsi_bus_flash_conn * fnode_conn)5648 static int qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
5649 struct iscsi_bus_flash_conn *fnode_conn)
5650 {
5651 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5652 struct scsi_qla_host *ha = to_qla_host(shost);
5653 uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
5654 struct dev_db_entry *fw_ddb_entry = NULL;
5655 dma_addr_t fw_ddb_entry_dma;
5656 uint32_t options = 0;
5657 int rval = 0;
5658
5659 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5660 &fw_ddb_entry_dma, GFP_KERNEL);
5661 if (!fw_ddb_entry) {
5662 DEBUG2(ql4_printk(KERN_ERR, ha,
5663 "%s: Unable to allocate dma buffer\n",
5664 __func__));
5665 rval = -ENOMEM;
5666 goto exit_ddb_apply;
5667 }
5668
5669 if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5670 options |= IPV6_DEFAULT_DDB_ENTRY;
5671
5672 rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5673 if (rval == QLA_ERROR)
5674 goto exit_ddb_apply;
5675
5676 dev_db_start_offset += (fnode_sess->target_id *
5677 sizeof(*fw_ddb_entry));
5678
5679 qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5680 fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5681
5682 rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
5683 sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
5684
5685 if (rval == QLA_SUCCESS) {
5686 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5687 ql4_printk(KERN_INFO, ha,
5688 "%s: flash node %u of host %lu written to flash\n",
5689 __func__, fnode_sess->target_id, ha->host_no);
5690 } else {
5691 rval = -EIO;
5692 ql4_printk(KERN_ERR, ha,
5693 "%s: Error while writing flash node %u of host %lu to flash\n",
5694 __func__, fnode_sess->target_id, ha->host_no);
5695 }
5696
5697 exit_ddb_apply:
5698 if (fw_ddb_entry)
5699 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5700 fw_ddb_entry, fw_ddb_entry_dma);
5701 return rval;
5702 }
5703
qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry,uint16_t idx)5704 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
5705 struct dev_db_entry *fw_ddb_entry,
5706 uint16_t idx)
5707 {
5708 struct dev_db_entry *ddb_entry = NULL;
5709 dma_addr_t ddb_entry_dma;
5710 unsigned long wtime;
5711 uint32_t mbx_sts = 0;
5712 uint32_t state = 0, conn_err = 0;
5713 uint16_t tmo = 0;
5714 int ret = 0;
5715
5716 ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5717 &ddb_entry_dma, GFP_KERNEL);
5718 if (!ddb_entry) {
5719 DEBUG2(ql4_printk(KERN_ERR, ha,
5720 "%s: Unable to allocate dma buffer\n",
5721 __func__));
5722 return QLA_ERROR;
5723 }
5724
5725 memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
5726
5727 ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
5728 if (ret != QLA_SUCCESS) {
5729 DEBUG2(ql4_printk(KERN_ERR, ha,
5730 "%s: Unable to set ddb entry for index %d\n",
5731 __func__, idx));
5732 goto exit_ddb_conn_open;
5733 }
5734
5735 qla4xxx_conn_open(ha, idx);
5736
5737 /* To ensure that sendtargets is done, wait for at least 12 secs */
5738 tmo = ((ha->def_timeout > LOGIN_TOV) &&
5739 (ha->def_timeout < LOGIN_TOV * 10) ?
5740 ha->def_timeout : LOGIN_TOV);
5741
5742 DEBUG2(ql4_printk(KERN_INFO, ha,
5743 "Default time to wait for login to ddb %d\n", tmo));
5744
5745 wtime = jiffies + (HZ * tmo);
5746 do {
5747 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
5748 NULL, &state, &conn_err, NULL,
5749 NULL);
5750 if (ret == QLA_ERROR)
5751 continue;
5752
5753 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5754 state == DDB_DS_SESSION_FAILED)
5755 break;
5756
5757 schedule_timeout_uninterruptible(HZ / 10);
5758 } while (time_after(wtime, jiffies));
5759
5760 exit_ddb_conn_open:
5761 if (ddb_entry)
5762 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5763 ddb_entry, ddb_entry_dma);
5764 return ret;
5765 }
5766
qla4xxx_ddb_login_st(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry)5767 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
5768 struct dev_db_entry *fw_ddb_entry)
5769 {
5770 struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5771 struct list_head list_nt;
5772 uint16_t ddb_index;
5773 int ret = 0;
5774
5775 if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
5776 ql4_printk(KERN_WARNING, ha,
5777 "%s: A discovery already in progress!\n", __func__);
5778 return QLA_ERROR;
5779 }
5780
5781 INIT_LIST_HEAD(&list_nt);
5782
5783 set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5784
5785 ret = qla4xxx_get_ddb_index(ha, &ddb_index);
5786 if (ret == QLA_ERROR)
5787 goto exit_login_st_clr_bit;
5788
5789 ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
5790 if (ret == QLA_ERROR)
5791 goto exit_login_st;
5792
5793 qla4xxx_build_new_nt_list(ha, &list_nt);
5794
5795 list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
5796 list_del_init(&ddb_idx->list);
5797 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
5798 vfree(ddb_idx);
5799 }
5800
5801 exit_login_st:
5802 if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
5803 ql4_printk(KERN_ERR, ha,
5804 "Unable to clear DDB index = 0x%x\n", ddb_index);
5805 }
5806
5807 clear_bit(ddb_index, ha->ddb_idx_map);
5808
5809 exit_login_st_clr_bit:
5810 clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5811 return ret;
5812 }
5813
qla4xxx_ddb_login_nt(struct scsi_qla_host * ha,struct dev_db_entry * fw_ddb_entry,uint16_t idx)5814 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
5815 struct dev_db_entry *fw_ddb_entry,
5816 uint16_t idx)
5817 {
5818 int ret = QLA_ERROR;
5819
5820 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5821 if (ret != QLA_SUCCESS)
5822 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5823 idx);
5824 else
5825 ret = -EPERM;
5826
5827 return ret;
5828 }
5829
5830 /**
5831 * qla4xxx_sysfs_ddb_login - Login to the specified target
5832 * @fnode_sess: pointer to session attrs of flash ddb entry
5833 * @fnode_conn: pointer to connection attrs of flash ddb entry
5834 *
5835 * This logs in to the specified target
5836 **/
qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session * fnode_sess,struct iscsi_bus_flash_conn * fnode_conn)5837 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
5838 struct iscsi_bus_flash_conn *fnode_conn)
5839 {
5840 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5841 struct scsi_qla_host *ha = to_qla_host(shost);
5842 struct dev_db_entry *fw_ddb_entry = NULL;
5843 dma_addr_t fw_ddb_entry_dma;
5844 uint32_t options = 0;
5845 int ret = 0;
5846
5847 if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
5848 ql4_printk(KERN_ERR, ha,
5849 "%s: Target info is not persistent\n", __func__);
5850 ret = -EIO;
5851 goto exit_ddb_login;
5852 }
5853
5854 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5855 &fw_ddb_entry_dma, GFP_KERNEL);
5856 if (!fw_ddb_entry) {
5857 DEBUG2(ql4_printk(KERN_ERR, ha,
5858 "%s: Unable to allocate dma buffer\n",
5859 __func__));
5860 ret = -ENOMEM;
5861 goto exit_ddb_login;
5862 }
5863
5864 if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5865 options |= IPV6_DEFAULT_DDB_ENTRY;
5866
5867 ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5868 if (ret == QLA_ERROR)
5869 goto exit_ddb_login;
5870
5871 qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5872 fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5873
5874 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5875 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry);
5876 else
5877 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
5878 fnode_sess->target_id);
5879
5880 if (ret > 0)
5881 ret = -EIO;
5882
5883 exit_ddb_login:
5884 if (fw_ddb_entry)
5885 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5886 fw_ddb_entry, fw_ddb_entry_dma);
5887 return ret;
5888 }
5889
5890 /**
5891 * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
5892 * @cls_sess: pointer to session to be logged out
5893 *
5894 * This performs session log out from the specified target
5895 **/
qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session * cls_sess)5896 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
5897 {
5898 struct iscsi_session *sess;
5899 struct ddb_entry *ddb_entry = NULL;
5900 struct scsi_qla_host *ha;
5901 struct dev_db_entry *fw_ddb_entry = NULL;
5902 dma_addr_t fw_ddb_entry_dma;
5903 unsigned long flags;
5904 unsigned long wtime;
5905 uint32_t ddb_state;
5906 int options;
5907 int ret = 0;
5908
5909 sess = cls_sess->dd_data;
5910 ddb_entry = sess->dd_data;
5911 ha = ddb_entry->ha;
5912
5913 if (ddb_entry->ddb_type != FLASH_DDB) {
5914 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
5915 __func__);
5916 ret = -ENXIO;
5917 goto exit_ddb_logout;
5918 }
5919
5920 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
5921 ql4_printk(KERN_ERR, ha,
5922 "%s: Logout from boot target entry is not permitted.\n",
5923 __func__);
5924 ret = -EPERM;
5925 goto exit_ddb_logout;
5926 }
5927
5928 options = LOGOUT_OPTION_CLOSE_SESSION;
5929 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
5930 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
5931 ret = -EIO;
5932 goto exit_ddb_logout;
5933 }
5934
5935 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5936 &fw_ddb_entry_dma, GFP_KERNEL);
5937 if (!fw_ddb_entry) {
5938 ql4_printk(KERN_ERR, ha,
5939 "%s: Unable to allocate dma buffer\n", __func__);
5940 ret = -ENOMEM;
5941 goto exit_ddb_logout;
5942 }
5943
5944 wtime = jiffies + (HZ * LOGOUT_TOV);
5945 do {
5946 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
5947 fw_ddb_entry, fw_ddb_entry_dma,
5948 NULL, NULL, &ddb_state, NULL,
5949 NULL, NULL);
5950 if (ret == QLA_ERROR)
5951 goto ddb_logout_clr_sess;
5952
5953 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
5954 (ddb_state == DDB_DS_SESSION_FAILED))
5955 goto ddb_logout_clr_sess;
5956
5957 schedule_timeout_uninterruptible(HZ);
5958 } while ((time_after(wtime, jiffies)));
5959
5960 ddb_logout_clr_sess:
5961 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5962 /*
5963 * we have decremented the reference count of the driver
5964 * when we setup the session to have the driver unload
5965 * to be seamless without actually destroying the
5966 * session
5967 **/
5968 try_module_get(qla4xxx_iscsi_transport.owner);
5969 iscsi_destroy_endpoint(ddb_entry->conn->ep);
5970
5971 spin_lock_irqsave(&ha->hardware_lock, flags);
5972 qla4xxx_free_ddb(ha, ddb_entry);
5973 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5974
5975 iscsi_session_teardown(ddb_entry->sess);
5976
5977 ret = QLA_SUCCESS;
5978
5979 exit_ddb_logout:
5980 if (fw_ddb_entry)
5981 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5982 fw_ddb_entry, fw_ddb_entry_dma);
5983 return ret;
5984 }
5985
5986 /**
5987 * qla4xxx_sysfs_ddb_logout - Logout from the specified target
5988 * @fnode_sess: pointer to session attrs of flash ddb entry
5989 * @fnode_conn: pointer to connection attrs of flash ddb entry
5990 *
5991 * This performs log out from the specified target
5992 **/
qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session * fnode_sess,struct iscsi_bus_flash_conn * fnode_conn)5993 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
5994 struct iscsi_bus_flash_conn *fnode_conn)
5995 {
5996 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5997 struct scsi_qla_host *ha = to_qla_host(shost);
5998 struct ql4_tuple_ddb *flash_tddb = NULL;
5999 struct ql4_tuple_ddb *tmp_tddb = NULL;
6000 struct dev_db_entry *fw_ddb_entry = NULL;
6001 struct ddb_entry *ddb_entry = NULL;
6002 dma_addr_t fw_ddb_dma;
6003 uint32_t next_idx = 0;
6004 uint32_t state = 0, conn_err = 0;
6005 uint16_t conn_id = 0;
6006 int idx, index;
6007 int status, ret = 0;
6008
6009 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6010 &fw_ddb_dma);
6011 if (fw_ddb_entry == NULL) {
6012 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
6013 ret = -ENOMEM;
6014 goto exit_ddb_logout;
6015 }
6016
6017 flash_tddb = vzalloc(sizeof(*flash_tddb));
6018 if (!flash_tddb) {
6019 ql4_printk(KERN_WARNING, ha,
6020 "%s:Memory Allocation failed.\n", __func__);
6021 ret = -ENOMEM;
6022 goto exit_ddb_logout;
6023 }
6024
6025 tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6026 if (!tmp_tddb) {
6027 ql4_printk(KERN_WARNING, ha,
6028 "%s:Memory Allocation failed.\n", __func__);
6029 ret = -ENOMEM;
6030 goto exit_ddb_logout;
6031 }
6032
6033 if (!fnode_sess->targetname) {
6034 ql4_printk(KERN_ERR, ha,
6035 "%s:Cannot logout from SendTarget entry\n",
6036 __func__);
6037 ret = -EPERM;
6038 goto exit_ddb_logout;
6039 }
6040
6041 if (fnode_sess->is_boot_target) {
6042 ql4_printk(KERN_ERR, ha,
6043 "%s: Logout from boot target entry is not permitted.\n",
6044 __func__);
6045 ret = -EPERM;
6046 goto exit_ddb_logout;
6047 }
6048
6049 strncpy(flash_tddb->iscsi_name, fnode_sess->targetname,
6050 ISCSI_NAME_SIZE);
6051
6052 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6053 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
6054 else
6055 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
6056
6057 flash_tddb->tpgt = fnode_sess->tpgt;
6058 flash_tddb->port = fnode_conn->port;
6059
6060 COPY_ISID(flash_tddb->isid, fnode_sess->isid);
6061
6062 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6063 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6064 if (ddb_entry == NULL)
6065 continue;
6066
6067 if (ddb_entry->ddb_type != FLASH_DDB)
6068 continue;
6069
6070 index = ddb_entry->sess->target_id;
6071 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
6072 fw_ddb_dma, NULL, &next_idx,
6073 &state, &conn_err, NULL,
6074 &conn_id);
6075 if (status == QLA_ERROR) {
6076 ret = -ENOMEM;
6077 break;
6078 }
6079
6080 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
6081
6082 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
6083 true);
6084 if (status == QLA_SUCCESS) {
6085 ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
6086 break;
6087 }
6088 }
6089
6090 if (idx == MAX_DDB_ENTRIES)
6091 ret = -ESRCH;
6092
6093 exit_ddb_logout:
6094 if (flash_tddb)
6095 vfree(flash_tddb);
6096 if (tmp_tddb)
6097 vfree(tmp_tddb);
6098 if (fw_ddb_entry)
6099 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6100
6101 return ret;
6102 }
6103
6104 static int
qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session * fnode_sess,int param,char * buf)6105 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
6106 int param, char *buf)
6107 {
6108 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6109 struct scsi_qla_host *ha = to_qla_host(shost);
6110 struct iscsi_bus_flash_conn *fnode_conn;
6111 struct ql4_chap_table chap_tbl;
6112 struct device *dev;
6113 int parent_type, parent_index = 0xffff;
6114 int rc = 0;
6115
6116 dev = iscsi_find_flashnode_conn(fnode_sess);
6117 if (!dev)
6118 return -EIO;
6119
6120 fnode_conn = iscsi_dev_to_flash_conn(dev);
6121
6122 switch (param) {
6123 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6124 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
6125 break;
6126 case ISCSI_FLASHNODE_PORTAL_TYPE:
6127 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
6128 break;
6129 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6130 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
6131 break;
6132 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6133 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
6134 break;
6135 case ISCSI_FLASHNODE_ENTRY_EN:
6136 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
6137 break;
6138 case ISCSI_FLASHNODE_HDR_DGST_EN:
6139 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
6140 break;
6141 case ISCSI_FLASHNODE_DATA_DGST_EN:
6142 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
6143 break;
6144 case ISCSI_FLASHNODE_IMM_DATA_EN:
6145 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
6146 break;
6147 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6148 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
6149 break;
6150 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6151 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
6152 break;
6153 case ISCSI_FLASHNODE_PDU_INORDER:
6154 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
6155 break;
6156 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6157 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
6158 break;
6159 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6160 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
6161 break;
6162 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6163 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
6164 break;
6165 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6166 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
6167 break;
6168 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6169 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
6170 break;
6171 case ISCSI_FLASHNODE_ERL:
6172 rc = sprintf(buf, "%u\n", fnode_sess->erl);
6173 break;
6174 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6175 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
6176 break;
6177 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6178 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
6179 break;
6180 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6181 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
6182 break;
6183 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6184 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
6185 break;
6186 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6187 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
6188 break;
6189 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6190 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
6191 break;
6192 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6193 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
6194 break;
6195 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6196 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
6197 break;
6198 case ISCSI_FLASHNODE_FIRST_BURST:
6199 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
6200 break;
6201 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6202 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
6203 break;
6204 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6205 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
6206 break;
6207 case ISCSI_FLASHNODE_MAX_R2T:
6208 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
6209 break;
6210 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6211 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
6212 break;
6213 case ISCSI_FLASHNODE_ISID:
6214 rc = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
6215 fnode_sess->isid[0], fnode_sess->isid[1],
6216 fnode_sess->isid[2], fnode_sess->isid[3],
6217 fnode_sess->isid[4], fnode_sess->isid[5]);
6218 break;
6219 case ISCSI_FLASHNODE_TSID:
6220 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
6221 break;
6222 case ISCSI_FLASHNODE_PORT:
6223 rc = sprintf(buf, "%d\n", fnode_conn->port);
6224 break;
6225 case ISCSI_FLASHNODE_MAX_BURST:
6226 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
6227 break;
6228 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6229 rc = sprintf(buf, "%u\n",
6230 fnode_sess->default_taskmgmt_timeout);
6231 break;
6232 case ISCSI_FLASHNODE_IPADDR:
6233 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6234 rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
6235 else
6236 rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
6237 break;
6238 case ISCSI_FLASHNODE_ALIAS:
6239 if (fnode_sess->targetalias)
6240 rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
6241 else
6242 rc = sprintf(buf, "\n");
6243 break;
6244 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6245 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6246 rc = sprintf(buf, "%pI6\n",
6247 fnode_conn->redirect_ipaddr);
6248 else
6249 rc = sprintf(buf, "%pI4\n",
6250 fnode_conn->redirect_ipaddr);
6251 break;
6252 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6253 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
6254 break;
6255 case ISCSI_FLASHNODE_LOCAL_PORT:
6256 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
6257 break;
6258 case ISCSI_FLASHNODE_IPV4_TOS:
6259 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
6260 break;
6261 case ISCSI_FLASHNODE_IPV6_TC:
6262 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6263 rc = sprintf(buf, "%u\n",
6264 fnode_conn->ipv6_traffic_class);
6265 else
6266 rc = sprintf(buf, "\n");
6267 break;
6268 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6269 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
6270 break;
6271 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6272 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6273 rc = sprintf(buf, "%pI6\n",
6274 fnode_conn->link_local_ipv6_addr);
6275 else
6276 rc = sprintf(buf, "\n");
6277 break;
6278 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6279 if (fnode_sess->discovery_parent_idx < MAX_DDB_ENTRIES)
6280 parent_index = fnode_sess->discovery_parent_idx;
6281
6282 rc = sprintf(buf, "%u\n", parent_index);
6283 break;
6284 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6285 if (fnode_sess->discovery_parent_type == DDB_ISNS)
6286 parent_type = ISCSI_DISC_PARENT_ISNS;
6287 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
6288 parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6289 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
6290 parent_type = ISCSI_DISC_PARENT_SENDTGT;
6291 else
6292 parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6293
6294 rc = sprintf(buf, "%s\n",
6295 iscsi_get_discovery_parent_name(parent_type));
6296 break;
6297 case ISCSI_FLASHNODE_NAME:
6298 if (fnode_sess->targetname)
6299 rc = sprintf(buf, "%s\n", fnode_sess->targetname);
6300 else
6301 rc = sprintf(buf, "\n");
6302 break;
6303 case ISCSI_FLASHNODE_TPGT:
6304 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
6305 break;
6306 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6307 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
6308 break;
6309 case ISCSI_FLASHNODE_TCP_RECV_WSF:
6310 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
6311 break;
6312 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
6313 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
6314 break;
6315 case ISCSI_FLASHNODE_USERNAME:
6316 if (fnode_sess->chap_auth_en) {
6317 qla4xxx_get_uni_chap_at_index(ha,
6318 chap_tbl.name,
6319 chap_tbl.secret,
6320 fnode_sess->chap_out_idx);
6321 rc = sprintf(buf, "%s\n", chap_tbl.name);
6322 } else {
6323 rc = sprintf(buf, "\n");
6324 }
6325 break;
6326 case ISCSI_FLASHNODE_PASSWORD:
6327 if (fnode_sess->chap_auth_en) {
6328 qla4xxx_get_uni_chap_at_index(ha,
6329 chap_tbl.name,
6330 chap_tbl.secret,
6331 fnode_sess->chap_out_idx);
6332 rc = sprintf(buf, "%s\n", chap_tbl.secret);
6333 } else {
6334 rc = sprintf(buf, "\n");
6335 }
6336 break;
6337 case ISCSI_FLASHNODE_STATSN:
6338 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
6339 break;
6340 case ISCSI_FLASHNODE_EXP_STATSN:
6341 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
6342 break;
6343 case ISCSI_FLASHNODE_IS_BOOT_TGT:
6344 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
6345 break;
6346 default:
6347 rc = -ENOSYS;
6348 break;
6349 }
6350
6351 put_device(dev);
6352 return rc;
6353 }
6354
6355 /**
6356 * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
6357 * @fnode_sess: pointer to session attrs of flash ddb entry
6358 * @fnode_conn: pointer to connection attrs of flash ddb entry
6359 * @data: Parameters and their values to update
6360 * @len: len of data
6361 *
6362 * This sets the parameter of flash ddb entry and writes them to flash
6363 **/
6364 static int
qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session * fnode_sess,struct iscsi_bus_flash_conn * fnode_conn,void * data,int len)6365 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
6366 struct iscsi_bus_flash_conn *fnode_conn,
6367 void *data, int len)
6368 {
6369 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6370 struct scsi_qla_host *ha = to_qla_host(shost);
6371 struct iscsi_flashnode_param_info *fnode_param;
6372 struct nlattr *attr;
6373 int rc = QLA_ERROR;
6374 uint32_t rem = len;
6375
6376 nla_for_each_attr(attr, data, len, rem) {
6377 fnode_param = nla_data(attr);
6378
6379 switch (fnode_param->param) {
6380 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6381 fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
6382 break;
6383 case ISCSI_FLASHNODE_PORTAL_TYPE:
6384 memcpy(fnode_sess->portal_type, fnode_param->value,
6385 strlen(fnode_sess->portal_type));
6386 break;
6387 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6388 fnode_sess->auto_snd_tgt_disable =
6389 fnode_param->value[0];
6390 break;
6391 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6392 fnode_sess->discovery_sess = fnode_param->value[0];
6393 break;
6394 case ISCSI_FLASHNODE_ENTRY_EN:
6395 fnode_sess->entry_state = fnode_param->value[0];
6396 break;
6397 case ISCSI_FLASHNODE_HDR_DGST_EN:
6398 fnode_conn->hdrdgst_en = fnode_param->value[0];
6399 break;
6400 case ISCSI_FLASHNODE_DATA_DGST_EN:
6401 fnode_conn->datadgst_en = fnode_param->value[0];
6402 break;
6403 case ISCSI_FLASHNODE_IMM_DATA_EN:
6404 fnode_sess->imm_data_en = fnode_param->value[0];
6405 break;
6406 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6407 fnode_sess->initial_r2t_en = fnode_param->value[0];
6408 break;
6409 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6410 fnode_sess->dataseq_inorder_en = fnode_param->value[0];
6411 break;
6412 case ISCSI_FLASHNODE_PDU_INORDER:
6413 fnode_sess->pdu_inorder_en = fnode_param->value[0];
6414 break;
6415 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6416 fnode_sess->chap_auth_en = fnode_param->value[0];
6417 break;
6418 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6419 fnode_conn->snack_req_en = fnode_param->value[0];
6420 break;
6421 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6422 fnode_sess->discovery_logout_en = fnode_param->value[0];
6423 break;
6424 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6425 fnode_sess->bidi_chap_en = fnode_param->value[0];
6426 break;
6427 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6428 fnode_sess->discovery_auth_optional =
6429 fnode_param->value[0];
6430 break;
6431 case ISCSI_FLASHNODE_ERL:
6432 fnode_sess->erl = fnode_param->value[0];
6433 break;
6434 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6435 fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
6436 break;
6437 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6438 fnode_conn->tcp_nagle_disable = fnode_param->value[0];
6439 break;
6440 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6441 fnode_conn->tcp_wsf_disable = fnode_param->value[0];
6442 break;
6443 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6444 fnode_conn->tcp_timer_scale = fnode_param->value[0];
6445 break;
6446 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6447 fnode_conn->tcp_timestamp_en = fnode_param->value[0];
6448 break;
6449 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6450 fnode_conn->fragment_disable = fnode_param->value[0];
6451 break;
6452 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6453 fnode_conn->max_recv_dlength =
6454 *(unsigned *)fnode_param->value;
6455 break;
6456 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6457 fnode_conn->max_xmit_dlength =
6458 *(unsigned *)fnode_param->value;
6459 break;
6460 case ISCSI_FLASHNODE_FIRST_BURST:
6461 fnode_sess->first_burst =
6462 *(unsigned *)fnode_param->value;
6463 break;
6464 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6465 fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
6466 break;
6467 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6468 fnode_sess->time2retain =
6469 *(uint16_t *)fnode_param->value;
6470 break;
6471 case ISCSI_FLASHNODE_MAX_R2T:
6472 fnode_sess->max_r2t =
6473 *(uint16_t *)fnode_param->value;
6474 break;
6475 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6476 fnode_conn->keepalive_timeout =
6477 *(uint16_t *)fnode_param->value;
6478 break;
6479 case ISCSI_FLASHNODE_ISID:
6480 memcpy(fnode_sess->isid, fnode_param->value,
6481 sizeof(fnode_sess->isid));
6482 break;
6483 case ISCSI_FLASHNODE_TSID:
6484 fnode_sess->tsid = *(uint16_t *)fnode_param->value;
6485 break;
6486 case ISCSI_FLASHNODE_PORT:
6487 fnode_conn->port = *(uint16_t *)fnode_param->value;
6488 break;
6489 case ISCSI_FLASHNODE_MAX_BURST:
6490 fnode_sess->max_burst = *(unsigned *)fnode_param->value;
6491 break;
6492 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6493 fnode_sess->default_taskmgmt_timeout =
6494 *(uint16_t *)fnode_param->value;
6495 break;
6496 case ISCSI_FLASHNODE_IPADDR:
6497 memcpy(fnode_conn->ipaddress, fnode_param->value,
6498 IPv6_ADDR_LEN);
6499 break;
6500 case ISCSI_FLASHNODE_ALIAS:
6501 rc = iscsi_switch_str_param(&fnode_sess->targetalias,
6502 (char *)fnode_param->value);
6503 break;
6504 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6505 memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
6506 IPv6_ADDR_LEN);
6507 break;
6508 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6509 fnode_conn->max_segment_size =
6510 *(unsigned *)fnode_param->value;
6511 break;
6512 case ISCSI_FLASHNODE_LOCAL_PORT:
6513 fnode_conn->local_port =
6514 *(uint16_t *)fnode_param->value;
6515 break;
6516 case ISCSI_FLASHNODE_IPV4_TOS:
6517 fnode_conn->ipv4_tos = fnode_param->value[0];
6518 break;
6519 case ISCSI_FLASHNODE_IPV6_TC:
6520 fnode_conn->ipv6_traffic_class = fnode_param->value[0];
6521 break;
6522 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6523 fnode_conn->ipv6_flow_label = fnode_param->value[0];
6524 break;
6525 case ISCSI_FLASHNODE_NAME:
6526 rc = iscsi_switch_str_param(&fnode_sess->targetname,
6527 (char *)fnode_param->value);
6528 break;
6529 case ISCSI_FLASHNODE_TPGT:
6530 fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
6531 break;
6532 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6533 memcpy(fnode_conn->link_local_ipv6_addr,
6534 fnode_param->value, IPv6_ADDR_LEN);
6535 break;
6536 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6537 fnode_sess->discovery_parent_type =
6538 *(uint16_t *)fnode_param->value;
6539 break;
6540 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6541 fnode_conn->tcp_xmit_wsf =
6542 *(uint8_t *)fnode_param->value;
6543 break;
6544 case ISCSI_FLASHNODE_TCP_RECV_WSF:
6545 fnode_conn->tcp_recv_wsf =
6546 *(uint8_t *)fnode_param->value;
6547 break;
6548 case ISCSI_FLASHNODE_STATSN:
6549 fnode_conn->statsn = *(uint32_t *)fnode_param->value;
6550 break;
6551 case ISCSI_FLASHNODE_EXP_STATSN:
6552 fnode_conn->exp_statsn =
6553 *(uint32_t *)fnode_param->value;
6554 break;
6555 default:
6556 ql4_printk(KERN_ERR, ha,
6557 "%s: No such sysfs attribute\n", __func__);
6558 rc = -ENOSYS;
6559 goto exit_set_param;
6560 }
6561 }
6562
6563 rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
6564
6565 exit_set_param:
6566 return rc;
6567 }
6568
6569 /**
6570 * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
6571 * @fnode_sess: pointer to session attrs of flash ddb entry
6572 *
6573 * This invalidates the flash ddb entry at the given index
6574 **/
qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session * fnode_sess)6575 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
6576 {
6577 struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6578 struct scsi_qla_host *ha = to_qla_host(shost);
6579 uint32_t dev_db_start_offset;
6580 uint32_t dev_db_end_offset;
6581 struct dev_db_entry *fw_ddb_entry = NULL;
6582 dma_addr_t fw_ddb_entry_dma;
6583 uint16_t *ddb_cookie = NULL;
6584 size_t ddb_size = 0;
6585 void *pddb = NULL;
6586 int target_id;
6587 int rc = 0;
6588
6589 if (fnode_sess->is_boot_target) {
6590 rc = -EPERM;
6591 DEBUG2(ql4_printk(KERN_ERR, ha,
6592 "%s: Deletion of boot target entry is not permitted.\n",
6593 __func__));
6594 goto exit_ddb_del;
6595 }
6596
6597 if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
6598 goto sysfs_ddb_del;
6599
6600 if (is_qla40XX(ha)) {
6601 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
6602 dev_db_end_offset = FLASH_OFFSET_DB_END;
6603 dev_db_start_offset += (fnode_sess->target_id *
6604 sizeof(*fw_ddb_entry));
6605 ddb_size = sizeof(*fw_ddb_entry);
6606 } else {
6607 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
6608 (ha->hw.flt_region_ddb << 2);
6609 /* flt_ddb_size is DDB table size for both ports
6610 * so divide it by 2 to calculate the offset for second port
6611 */
6612 if (ha->port_num == 1)
6613 dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
6614
6615 dev_db_end_offset = dev_db_start_offset +
6616 (ha->hw.flt_ddb_size / 2);
6617
6618 dev_db_start_offset += (fnode_sess->target_id *
6619 sizeof(*fw_ddb_entry));
6620 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
6621
6622 ddb_size = sizeof(*ddb_cookie);
6623 }
6624
6625 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
6626 __func__, dev_db_start_offset, dev_db_end_offset));
6627
6628 if (dev_db_start_offset > dev_db_end_offset) {
6629 rc = -EIO;
6630 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
6631 __func__, fnode_sess->target_id));
6632 goto exit_ddb_del;
6633 }
6634
6635 pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
6636 &fw_ddb_entry_dma, GFP_KERNEL);
6637 if (!pddb) {
6638 rc = -ENOMEM;
6639 DEBUG2(ql4_printk(KERN_ERR, ha,
6640 "%s: Unable to allocate dma buffer\n",
6641 __func__));
6642 goto exit_ddb_del;
6643 }
6644
6645 if (is_qla40XX(ha)) {
6646 fw_ddb_entry = pddb;
6647 memset(fw_ddb_entry, 0, ddb_size);
6648 ddb_cookie = &fw_ddb_entry->cookie;
6649 } else {
6650 ddb_cookie = pddb;
6651 }
6652
6653 /* invalidate the cookie */
6654 *ddb_cookie = 0xFFEE;
6655 qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
6656 ddb_size, FLASH_OPT_RMW_COMMIT);
6657
6658 sysfs_ddb_del:
6659 target_id = fnode_sess->target_id;
6660 iscsi_destroy_flashnode_sess(fnode_sess);
6661 ql4_printk(KERN_INFO, ha,
6662 "%s: session and conn entries for flashnode %u of host %lu deleted\n",
6663 __func__, target_id, ha->host_no);
6664 exit_ddb_del:
6665 if (pddb)
6666 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
6667 fw_ddb_entry_dma);
6668 return rc;
6669 }
6670
6671 /**
6672 * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
6673 * @ha: pointer to adapter structure
6674 *
6675 * Export the firmware DDB for all send targets and normal targets to sysfs.
6676 **/
qla4xxx_sysfs_ddb_export(struct scsi_qla_host * ha)6677 static int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
6678 {
6679 struct dev_db_entry *fw_ddb_entry = NULL;
6680 dma_addr_t fw_ddb_entry_dma;
6681 uint16_t max_ddbs;
6682 uint16_t idx = 0;
6683 int ret = QLA_SUCCESS;
6684
6685 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
6686 sizeof(*fw_ddb_entry),
6687 &fw_ddb_entry_dma, GFP_KERNEL);
6688 if (!fw_ddb_entry) {
6689 DEBUG2(ql4_printk(KERN_ERR, ha,
6690 "%s: Unable to allocate dma buffer\n",
6691 __func__));
6692 return -ENOMEM;
6693 }
6694
6695 max_ddbs = is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
6696 MAX_DEV_DB_ENTRIES;
6697
6698 for (idx = 0; idx < max_ddbs; idx++) {
6699 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
6700 idx))
6701 continue;
6702
6703 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
6704 if (ret) {
6705 ret = -EIO;
6706 break;
6707 }
6708 }
6709
6710 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
6711 fw_ddb_entry_dma);
6712
6713 return ret;
6714 }
6715
qla4xxx_sysfs_ddb_remove(struct scsi_qla_host * ha)6716 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
6717 {
6718 iscsi_destroy_all_flashnode(ha->host);
6719 }
6720
6721 /**
6722 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
6723 * @ha: pointer to adapter structure
6724 * @is_reset: Is this init path or reset path
6725 *
6726 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
6727 * using connection open, then create the list of normal targets (nt)
6728 * from firmware DDBs. Based on the list of nt setup session and connection
6729 * objects.
6730 **/
qla4xxx_build_ddb_list(struct scsi_qla_host * ha,int is_reset)6731 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
6732 {
6733 uint16_t tmo = 0;
6734 struct list_head list_st, list_nt;
6735 struct qla_ddb_index *st_ddb_idx, *st_ddb_idx_tmp;
6736 unsigned long wtime;
6737
6738 if (!test_bit(AF_LINK_UP, &ha->flags)) {
6739 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
6740 ha->is_reset = is_reset;
6741 return;
6742 }
6743
6744 INIT_LIST_HEAD(&list_st);
6745 INIT_LIST_HEAD(&list_nt);
6746
6747 qla4xxx_build_st_list(ha, &list_st);
6748
6749 /* Before issuing conn open mbox, ensure all IPs states are configured
6750 * Note, conn open fails if IPs are not configured
6751 */
6752 qla4xxx_wait_for_ip_configuration(ha);
6753
6754 /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
6755 list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
6756 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
6757 }
6758
6759 /* Wait to ensure all sendtargets are done for min 12 sec wait */
6760 tmo = ((ha->def_timeout > LOGIN_TOV) &&
6761 (ha->def_timeout < LOGIN_TOV * 10) ?
6762 ha->def_timeout : LOGIN_TOV);
6763
6764 DEBUG2(ql4_printk(KERN_INFO, ha,
6765 "Default time to wait for build ddb %d\n", tmo));
6766
6767 wtime = jiffies + (HZ * tmo);
6768 do {
6769 if (list_empty(&list_st))
6770 break;
6771
6772 qla4xxx_remove_failed_ddb(ha, &list_st);
6773 schedule_timeout_uninterruptible(HZ / 10);
6774 } while (time_after(wtime, jiffies));
6775
6776 /* Free up the sendtargets list */
6777 qla4xxx_free_ddb_list(&list_st);
6778
6779 qla4xxx_build_nt_list(ha, &list_nt, is_reset);
6780
6781 qla4xxx_free_ddb_list(&list_nt);
6782
6783 qla4xxx_free_ddb_index(ha);
6784 }
6785
6786 /**
6787 * qla4xxx_wait_login_resp_boot_tgt - Wait for iSCSI boot target login
6788 * response.
6789 * @ha: pointer to adapter structure
6790 *
6791 * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
6792 * set in DDB and we will wait for login response of boot targets during
6793 * probe.
6794 **/
qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host * ha)6795 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
6796 {
6797 struct ddb_entry *ddb_entry;
6798 struct dev_db_entry *fw_ddb_entry = NULL;
6799 dma_addr_t fw_ddb_entry_dma;
6800 unsigned long wtime;
6801 uint32_t ddb_state;
6802 int max_ddbs, idx, ret;
6803
6804 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6805 MAX_DEV_DB_ENTRIES;
6806
6807 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6808 &fw_ddb_entry_dma, GFP_KERNEL);
6809 if (!fw_ddb_entry) {
6810 ql4_printk(KERN_ERR, ha,
6811 "%s: Unable to allocate dma buffer\n", __func__);
6812 goto exit_login_resp;
6813 }
6814
6815 wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
6816
6817 for (idx = 0; idx < max_ddbs; idx++) {
6818 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6819 if (ddb_entry == NULL)
6820 continue;
6821
6822 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6823 DEBUG2(ql4_printk(KERN_INFO, ha,
6824 "%s: DDB index [%d]\n", __func__,
6825 ddb_entry->fw_ddb_index));
6826 do {
6827 ret = qla4xxx_get_fwddb_entry(ha,
6828 ddb_entry->fw_ddb_index,
6829 fw_ddb_entry, fw_ddb_entry_dma,
6830 NULL, NULL, &ddb_state, NULL,
6831 NULL, NULL);
6832 if (ret == QLA_ERROR)
6833 goto exit_login_resp;
6834
6835 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
6836 (ddb_state == DDB_DS_SESSION_FAILED))
6837 break;
6838
6839 schedule_timeout_uninterruptible(HZ);
6840
6841 } while ((time_after(wtime, jiffies)));
6842
6843 if (!time_after(wtime, jiffies)) {
6844 DEBUG2(ql4_printk(KERN_INFO, ha,
6845 "%s: Login response wait timer expired\n",
6846 __func__));
6847 goto exit_login_resp;
6848 }
6849 }
6850 }
6851
6852 exit_login_resp:
6853 if (fw_ddb_entry)
6854 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6855 fw_ddb_entry, fw_ddb_entry_dma);
6856 }
6857
6858 /**
6859 * qla4xxx_probe_adapter - callback function to probe HBA
6860 * @pdev: pointer to pci_dev structure
6861 * @pci_device_id: pointer to pci_device entry
6862 *
6863 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
6864 * It returns zero if successful. It also initializes all data necessary for
6865 * the driver.
6866 **/
qla4xxx_probe_adapter(struct pci_dev * pdev,const struct pci_device_id * ent)6867 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
6868 const struct pci_device_id *ent)
6869 {
6870 int ret = -ENODEV, status;
6871 struct Scsi_Host *host;
6872 struct scsi_qla_host *ha;
6873 uint8_t init_retry_count = 0;
6874 char buf[34];
6875 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
6876 uint32_t dev_state;
6877
6878 if (pci_enable_device(pdev))
6879 return -1;
6880
6881 host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
6882 if (host == NULL) {
6883 printk(KERN_WARNING
6884 "qla4xxx: Couldn't allocate host from scsi layer!\n");
6885 goto probe_disable_device;
6886 }
6887
6888 /* Clear our data area */
6889 ha = to_qla_host(host);
6890 memset(ha, 0, sizeof(*ha));
6891
6892 /* Save the information from PCI BIOS. */
6893 ha->pdev = pdev;
6894 ha->host = host;
6895 ha->host_no = host->host_no;
6896 ha->func_num = PCI_FUNC(ha->pdev->devfn);
6897
6898 pci_enable_pcie_error_reporting(pdev);
6899
6900 /* Setup Runtime configurable options */
6901 if (is_qla8022(ha)) {
6902 ha->isp_ops = &qla4_82xx_isp_ops;
6903 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
6904 ha->qdr_sn_window = -1;
6905 ha->ddr_mn_window = -1;
6906 ha->curr_window = 255;
6907 nx_legacy_intr = &legacy_intr[ha->func_num];
6908 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
6909 ha->nx_legacy_intr.tgt_status_reg =
6910 nx_legacy_intr->tgt_status_reg;
6911 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
6912 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
6913 } else if (is_qla8032(ha)) {
6914 ha->isp_ops = &qla4_83xx_isp_ops;
6915 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
6916 } else {
6917 ha->isp_ops = &qla4xxx_isp_ops;
6918 }
6919
6920 if (is_qla80XX(ha)) {
6921 rwlock_init(&ha->hw_lock);
6922 ha->pf_bit = ha->func_num << 16;
6923 /* Set EEH reset type to fundamental if required by hba */
6924 pdev->needs_freset = 1;
6925 }
6926
6927 /* Configure PCI I/O space. */
6928 ret = ha->isp_ops->iospace_config(ha);
6929 if (ret)
6930 goto probe_failed_ioconfig;
6931
6932 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
6933 pdev->device, pdev->irq, ha->reg);
6934
6935 qla4xxx_config_dma_addressing(ha);
6936
6937 /* Initialize lists and spinlocks. */
6938 INIT_LIST_HEAD(&ha->free_srb_q);
6939
6940 mutex_init(&ha->mbox_sem);
6941 mutex_init(&ha->chap_sem);
6942 init_completion(&ha->mbx_intr_comp);
6943 init_completion(&ha->disable_acb_comp);
6944
6945 spin_lock_init(&ha->hardware_lock);
6946 spin_lock_init(&ha->work_lock);
6947
6948 /* Initialize work list */
6949 INIT_LIST_HEAD(&ha->work_list);
6950
6951 /* Allocate dma buffers */
6952 if (qla4xxx_mem_alloc(ha)) {
6953 ql4_printk(KERN_WARNING, ha,
6954 "[ERROR] Failed to allocate memory for adapter\n");
6955
6956 ret = -ENOMEM;
6957 goto probe_failed;
6958 }
6959
6960 host->cmd_per_lun = 3;
6961 host->max_channel = 0;
6962 host->max_lun = MAX_LUNS - 1;
6963 host->max_id = MAX_TARGETS;
6964 host->max_cmd_len = IOCB_MAX_CDB_LEN;
6965 host->can_queue = MAX_SRBS ;
6966 host->transportt = qla4xxx_scsi_transport;
6967
6968 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
6969 if (ret) {
6970 ql4_printk(KERN_WARNING, ha,
6971 "%s: scsi_init_shared_tag_map failed\n", __func__);
6972 goto probe_failed;
6973 }
6974
6975 pci_set_drvdata(pdev, ha);
6976
6977 ret = scsi_add_host(host, &pdev->dev);
6978 if (ret)
6979 goto probe_failed;
6980
6981 if (is_qla80XX(ha))
6982 qla4_8xxx_get_flash_info(ha);
6983
6984 if (is_qla8032(ha)) {
6985 qla4_83xx_read_reset_template(ha);
6986 /*
6987 * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
6988 * If DONRESET_BIT0 is set, drivers should not set dev_state
6989 * to NEED_RESET. But if NEED_RESET is set, drivers should
6990 * should honor the reset.
6991 */
6992 if (ql4xdontresethba == 1)
6993 qla4_83xx_set_idc_dontreset(ha);
6994 }
6995
6996 /*
6997 * Initialize the Host adapter request/response queues and
6998 * firmware
6999 * NOTE: interrupts enabled upon successful completion
7000 */
7001 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7002
7003 /* Dont retry adapter initialization if IRQ allocation failed */
7004 if (is_qla80XX(ha) && !test_bit(AF_IRQ_ATTACHED, &ha->flags)) {
7005 ql4_printk(KERN_WARNING, ha, "%s: Skipping retry of adapter initialization\n",
7006 __func__);
7007 goto skip_retry_init;
7008 }
7009
7010 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
7011 init_retry_count++ < MAX_INIT_RETRIES) {
7012
7013 if (is_qla80XX(ha)) {
7014 ha->isp_ops->idc_lock(ha);
7015 dev_state = qla4_8xxx_rd_direct(ha,
7016 QLA8XXX_CRB_DEV_STATE);
7017 ha->isp_ops->idc_unlock(ha);
7018 if (dev_state == QLA8XXX_DEV_FAILED) {
7019 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
7020 "initialize adapter. H/W is in failed state\n",
7021 __func__);
7022 break;
7023 }
7024 }
7025 DEBUG2(printk("scsi: %s: retrying adapter initialization "
7026 "(%d)\n", __func__, init_retry_count));
7027
7028 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
7029 continue;
7030
7031 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7032 }
7033
7034 skip_retry_init:
7035 if (!test_bit(AF_ONLINE, &ha->flags)) {
7036 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
7037
7038 if ((is_qla8022(ha) && ql4xdontresethba) ||
7039 (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
7040 /* Put the device in failed state. */
7041 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
7042 ha->isp_ops->idc_lock(ha);
7043 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7044 QLA8XXX_DEV_FAILED);
7045 ha->isp_ops->idc_unlock(ha);
7046 }
7047 ret = -ENODEV;
7048 goto remove_host;
7049 }
7050
7051 /* Startup the kernel thread for this host adapter. */
7052 DEBUG2(printk("scsi: %s: Starting kernel thread for "
7053 "qla4xxx_dpc\n", __func__));
7054 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
7055 ha->dpc_thread = create_singlethread_workqueue(buf);
7056 if (!ha->dpc_thread) {
7057 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
7058 ret = -ENODEV;
7059 goto remove_host;
7060 }
7061 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
7062
7063 sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
7064 ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
7065 if (!ha->task_wq) {
7066 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
7067 ret = -ENODEV;
7068 goto remove_host;
7069 }
7070
7071 /*
7072 * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
7073 * (which is called indirectly by qla4xxx_initialize_adapter),
7074 * so that irqs will be registered after crbinit but before
7075 * mbx_intr_enable.
7076 */
7077 if (is_qla40XX(ha)) {
7078 ret = qla4xxx_request_irqs(ha);
7079 if (ret) {
7080 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
7081 "interrupt %d already in use.\n", pdev->irq);
7082 goto remove_host;
7083 }
7084 }
7085
7086 pci_save_state(ha->pdev);
7087 ha->isp_ops->enable_intrs(ha);
7088
7089 /* Start timer thread. */
7090 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
7091
7092 set_bit(AF_INIT_DONE, &ha->flags);
7093
7094 qla4_8xxx_alloc_sysfs_attr(ha);
7095
7096 printk(KERN_INFO
7097 " QLogic iSCSI HBA Driver version: %s\n"
7098 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
7099 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
7100 ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
7101 ha->patch_number, ha->build_number);
7102
7103 /* Set the driver version */
7104 if (is_qla80XX(ha))
7105 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
7106
7107 if (qla4xxx_setup_boot_info(ha))
7108 ql4_printk(KERN_ERR, ha,
7109 "%s: No iSCSI boot target configured\n", __func__);
7110
7111 if (qla4xxx_sysfs_ddb_export(ha))
7112 ql4_printk(KERN_ERR, ha,
7113 "%s: Error exporting ddb to sysfs\n", __func__);
7114
7115 /* Perform the build ddb list and login to each */
7116 qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
7117 iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
7118 qla4xxx_wait_login_resp_boot_tgt(ha);
7119
7120 qla4xxx_create_chap_list(ha);
7121
7122 qla4xxx_create_ifaces(ha);
7123 return 0;
7124
7125 remove_host:
7126 scsi_remove_host(ha->host);
7127
7128 probe_failed:
7129 qla4xxx_free_adapter(ha);
7130
7131 probe_failed_ioconfig:
7132 pci_disable_pcie_error_reporting(pdev);
7133 scsi_host_put(ha->host);
7134
7135 probe_disable_device:
7136 pci_disable_device(pdev);
7137
7138 return ret;
7139 }
7140
7141 /**
7142 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
7143 * @ha: pointer to adapter structure
7144 *
7145 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
7146 * so that the other port will not re-initialize while in the process of
7147 * removing the ha due to driver unload or hba hotplug.
7148 **/
qla4xxx_prevent_other_port_reinit(struct scsi_qla_host * ha)7149 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
7150 {
7151 struct scsi_qla_host *other_ha = NULL;
7152 struct pci_dev *other_pdev = NULL;
7153 int fn = ISP4XXX_PCI_FN_2;
7154
7155 /*iscsi function numbers for ISP4xxx is 1 and 3*/
7156 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
7157 fn = ISP4XXX_PCI_FN_1;
7158
7159 other_pdev =
7160 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7161 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7162 fn));
7163
7164 /* Get other_ha if other_pdev is valid and state is enable*/
7165 if (other_pdev) {
7166 if (atomic_read(&other_pdev->enable_cnt)) {
7167 other_ha = pci_get_drvdata(other_pdev);
7168 if (other_ha) {
7169 set_bit(AF_HA_REMOVAL, &other_ha->flags);
7170 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
7171 "Prevent %s reinit\n", __func__,
7172 dev_name(&other_ha->pdev->dev)));
7173 }
7174 }
7175 pci_dev_put(other_pdev);
7176 }
7177 }
7178
qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host * ha)7179 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
7180 {
7181 struct ddb_entry *ddb_entry;
7182 int options;
7183 int idx;
7184
7185 for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7186
7187 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7188 if ((ddb_entry != NULL) &&
7189 (ddb_entry->ddb_type == FLASH_DDB)) {
7190
7191 options = LOGOUT_OPTION_CLOSE_SESSION;
7192 if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
7193 == QLA_ERROR)
7194 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
7195 __func__);
7196
7197 qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7198 /*
7199 * we have decremented the reference count of the driver
7200 * when we setup the session to have the driver unload
7201 * to be seamless without actually destroying the
7202 * session
7203 **/
7204 try_module_get(qla4xxx_iscsi_transport.owner);
7205 iscsi_destroy_endpoint(ddb_entry->conn->ep);
7206 qla4xxx_free_ddb(ha, ddb_entry);
7207 iscsi_session_teardown(ddb_entry->sess);
7208 }
7209 }
7210 }
7211 /**
7212 * qla4xxx_remove_adapter - callback function to remove adapter.
7213 * @pci_dev: PCI device pointer
7214 **/
qla4xxx_remove_adapter(struct pci_dev * pdev)7215 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
7216 {
7217 struct scsi_qla_host *ha;
7218
7219 /*
7220 * If the PCI device is disabled then it means probe_adapter had
7221 * failed and resources already cleaned up on probe_adapter exit.
7222 */
7223 if (!pci_is_enabled(pdev))
7224 return;
7225
7226 ha = pci_get_drvdata(pdev);
7227
7228 if (is_qla40XX(ha))
7229 qla4xxx_prevent_other_port_reinit(ha);
7230
7231 /* destroy iface from sysfs */
7232 qla4xxx_destroy_ifaces(ha);
7233
7234 if ((!ql4xdisablesysfsboot) && ha->boot_kset)
7235 iscsi_boot_destroy_kset(ha->boot_kset);
7236
7237 qla4xxx_destroy_fw_ddb_session(ha);
7238 qla4_8xxx_free_sysfs_attr(ha);
7239
7240 qla4xxx_sysfs_ddb_remove(ha);
7241 scsi_remove_host(ha->host);
7242
7243 qla4xxx_free_adapter(ha);
7244
7245 scsi_host_put(ha->host);
7246
7247 pci_disable_pcie_error_reporting(pdev);
7248 pci_disable_device(pdev);
7249 pci_set_drvdata(pdev, NULL);
7250 }
7251
7252 /**
7253 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
7254 * @ha: HA context
7255 *
7256 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
7257 * supported addressing method.
7258 */
qla4xxx_config_dma_addressing(struct scsi_qla_host * ha)7259 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
7260 {
7261 int retval;
7262
7263 /* Update our PCI device dma_mask for full 64 bit mask */
7264 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
7265 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
7266 dev_dbg(&ha->pdev->dev,
7267 "Failed to set 64 bit PCI consistent mask; "
7268 "using 32 bit.\n");
7269 retval = pci_set_consistent_dma_mask(ha->pdev,
7270 DMA_BIT_MASK(32));
7271 }
7272 } else
7273 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
7274 }
7275
qla4xxx_slave_alloc(struct scsi_device * sdev)7276 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
7277 {
7278 struct iscsi_cls_session *cls_sess;
7279 struct iscsi_session *sess;
7280 struct ddb_entry *ddb;
7281 int queue_depth = QL4_DEF_QDEPTH;
7282
7283 cls_sess = starget_to_session(sdev->sdev_target);
7284 sess = cls_sess->dd_data;
7285 ddb = sess->dd_data;
7286
7287 sdev->hostdata = ddb;
7288 sdev->tagged_supported = 1;
7289
7290 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
7291 queue_depth = ql4xmaxqdepth;
7292
7293 scsi_activate_tcq(sdev, queue_depth);
7294 return 0;
7295 }
7296
qla4xxx_slave_configure(struct scsi_device * sdev)7297 static int qla4xxx_slave_configure(struct scsi_device *sdev)
7298 {
7299 sdev->tagged_supported = 1;
7300 return 0;
7301 }
7302
qla4xxx_slave_destroy(struct scsi_device * sdev)7303 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
7304 {
7305 scsi_deactivate_tcq(sdev, 1);
7306 }
7307
qla4xxx_change_queue_depth(struct scsi_device * sdev,int qdepth,int reason)7308 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
7309 int reason)
7310 {
7311 if (!ql4xqfulltracking)
7312 return -EOPNOTSUPP;
7313
7314 return iscsi_change_queue_depth(sdev, qdepth, reason);
7315 }
7316
7317 /**
7318 * qla4xxx_del_from_active_array - returns an active srb
7319 * @ha: Pointer to host adapter structure.
7320 * @index: index into the active_array
7321 *
7322 * This routine removes and returns the srb at the specified index
7323 **/
qla4xxx_del_from_active_array(struct scsi_qla_host * ha,uint32_t index)7324 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
7325 uint32_t index)
7326 {
7327 struct srb *srb = NULL;
7328 struct scsi_cmnd *cmd = NULL;
7329
7330 cmd = scsi_host_find_tag(ha->host, index);
7331 if (!cmd)
7332 return srb;
7333
7334 srb = (struct srb *)CMD_SP(cmd);
7335 if (!srb)
7336 return srb;
7337
7338 /* update counters */
7339 if (srb->flags & SRB_DMA_VALID) {
7340 ha->iocb_cnt -= srb->iocb_cnt;
7341 if (srb->cmd)
7342 srb->cmd->host_scribble =
7343 (unsigned char *)(unsigned long) MAX_SRBS;
7344 }
7345 return srb;
7346 }
7347
7348 /**
7349 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
7350 * @ha: Pointer to host adapter structure.
7351 * @cmd: Scsi Command to wait on.
7352 *
7353 * This routine waits for the command to be returned by the Firmware
7354 * for some max time.
7355 **/
qla4xxx_eh_wait_on_command(struct scsi_qla_host * ha,struct scsi_cmnd * cmd)7356 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
7357 struct scsi_cmnd *cmd)
7358 {
7359 int done = 0;
7360 struct srb *rp;
7361 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
7362 int ret = SUCCESS;
7363
7364 /* Dont wait on command if PCI error is being handled
7365 * by PCI AER driver
7366 */
7367 if (unlikely(pci_channel_offline(ha->pdev)) ||
7368 (test_bit(AF_EEH_BUSY, &ha->flags))) {
7369 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
7370 ha->host_no, __func__);
7371 return ret;
7372 }
7373
7374 do {
7375 /* Checking to see if its returned to OS */
7376 rp = (struct srb *) CMD_SP(cmd);
7377 if (rp == NULL) {
7378 done++;
7379 break;
7380 }
7381
7382 msleep(2000);
7383 } while (max_wait_time--);
7384
7385 return done;
7386 }
7387
7388 /**
7389 * qla4xxx_wait_for_hba_online - waits for HBA to come online
7390 * @ha: Pointer to host adapter structure
7391 **/
qla4xxx_wait_for_hba_online(struct scsi_qla_host * ha)7392 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
7393 {
7394 unsigned long wait_online;
7395
7396 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
7397 while (time_before(jiffies, wait_online)) {
7398
7399 if (adapter_up(ha))
7400 return QLA_SUCCESS;
7401
7402 msleep(2000);
7403 }
7404
7405 return QLA_ERROR;
7406 }
7407
7408 /**
7409 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
7410 * @ha: pointer to HBA
7411 * @t: target id
7412 * @l: lun id
7413 *
7414 * This function waits for all outstanding commands to a lun to complete. It
7415 * returns 0 if all pending commands are returned and 1 otherwise.
7416 **/
qla4xxx_eh_wait_for_commands(struct scsi_qla_host * ha,struct scsi_target * stgt,struct scsi_device * sdev)7417 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
7418 struct scsi_target *stgt,
7419 struct scsi_device *sdev)
7420 {
7421 int cnt;
7422 int status = 0;
7423 struct scsi_cmnd *cmd;
7424
7425 /*
7426 * Waiting for all commands for the designated target or dev
7427 * in the active array
7428 */
7429 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
7430 cmd = scsi_host_find_tag(ha->host, cnt);
7431 if (cmd && stgt == scsi_target(cmd->device) &&
7432 (!sdev || sdev == cmd->device)) {
7433 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7434 status++;
7435 break;
7436 }
7437 }
7438 }
7439 return status;
7440 }
7441
7442 /**
7443 * qla4xxx_eh_abort - callback for abort task.
7444 * @cmd: Pointer to Linux's SCSI command structure
7445 *
7446 * This routine is called by the Linux OS to abort the specified
7447 * command.
7448 **/
qla4xxx_eh_abort(struct scsi_cmnd * cmd)7449 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
7450 {
7451 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7452 unsigned int id = cmd->device->id;
7453 unsigned int lun = cmd->device->lun;
7454 unsigned long flags;
7455 struct srb *srb = NULL;
7456 int ret = SUCCESS;
7457 int wait = 0;
7458
7459 ql4_printk(KERN_INFO, ha,
7460 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
7461 ha->host_no, id, lun, cmd);
7462
7463 spin_lock_irqsave(&ha->hardware_lock, flags);
7464 srb = (struct srb *) CMD_SP(cmd);
7465 if (!srb) {
7466 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7467 return SUCCESS;
7468 }
7469 kref_get(&srb->srb_ref);
7470 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7471
7472 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
7473 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
7474 ha->host_no, id, lun));
7475 ret = FAILED;
7476 } else {
7477 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
7478 ha->host_no, id, lun));
7479 wait = 1;
7480 }
7481
7482 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
7483
7484 /* Wait for command to complete */
7485 if (wait) {
7486 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7487 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
7488 ha->host_no, id, lun));
7489 ret = FAILED;
7490 }
7491 }
7492
7493 ql4_printk(KERN_INFO, ha,
7494 "scsi%ld:%d:%d: Abort command - %s\n",
7495 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
7496
7497 return ret;
7498 }
7499
7500 /**
7501 * qla4xxx_eh_device_reset - callback for target reset.
7502 * @cmd: Pointer to Linux's SCSI command structure
7503 *
7504 * This routine is called by the Linux OS to reset all luns on the
7505 * specified target.
7506 **/
qla4xxx_eh_device_reset(struct scsi_cmnd * cmd)7507 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
7508 {
7509 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7510 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7511 int ret = FAILED, stat;
7512
7513 if (!ddb_entry)
7514 return ret;
7515
7516 ret = iscsi_block_scsi_eh(cmd);
7517 if (ret)
7518 return ret;
7519 ret = FAILED;
7520
7521 ql4_printk(KERN_INFO, ha,
7522 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
7523 cmd->device->channel, cmd->device->id, cmd->device->lun);
7524
7525 DEBUG2(printk(KERN_INFO
7526 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
7527 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
7528 cmd, jiffies, cmd->request->timeout / HZ,
7529 ha->dpc_flags, cmd->result, cmd->allowed));
7530
7531 /* FIXME: wait for hba to go online */
7532 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
7533 if (stat != QLA_SUCCESS) {
7534 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
7535 goto eh_dev_reset_done;
7536 }
7537
7538 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7539 cmd->device)) {
7540 ql4_printk(KERN_INFO, ha,
7541 "DEVICE RESET FAILED - waiting for "
7542 "commands.\n");
7543 goto eh_dev_reset_done;
7544 }
7545
7546 /* Send marker. */
7547 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7548 MM_LUN_RESET) != QLA_SUCCESS)
7549 goto eh_dev_reset_done;
7550
7551 ql4_printk(KERN_INFO, ha,
7552 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
7553 ha->host_no, cmd->device->channel, cmd->device->id,
7554 cmd->device->lun);
7555
7556 ret = SUCCESS;
7557
7558 eh_dev_reset_done:
7559
7560 return ret;
7561 }
7562
7563 /**
7564 * qla4xxx_eh_target_reset - callback for target reset.
7565 * @cmd: Pointer to Linux's SCSI command structure
7566 *
7567 * This routine is called by the Linux OS to reset the target.
7568 **/
qla4xxx_eh_target_reset(struct scsi_cmnd * cmd)7569 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
7570 {
7571 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7572 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7573 int stat, ret;
7574
7575 if (!ddb_entry)
7576 return FAILED;
7577
7578 ret = iscsi_block_scsi_eh(cmd);
7579 if (ret)
7580 return ret;
7581
7582 starget_printk(KERN_INFO, scsi_target(cmd->device),
7583 "WARM TARGET RESET ISSUED.\n");
7584
7585 DEBUG2(printk(KERN_INFO
7586 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
7587 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
7588 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
7589 ha->dpc_flags, cmd->result, cmd->allowed));
7590
7591 stat = qla4xxx_reset_target(ha, ddb_entry);
7592 if (stat != QLA_SUCCESS) {
7593 starget_printk(KERN_INFO, scsi_target(cmd->device),
7594 "WARM TARGET RESET FAILED.\n");
7595 return FAILED;
7596 }
7597
7598 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7599 NULL)) {
7600 starget_printk(KERN_INFO, scsi_target(cmd->device),
7601 "WARM TARGET DEVICE RESET FAILED - "
7602 "waiting for commands.\n");
7603 return FAILED;
7604 }
7605
7606 /* Send marker. */
7607 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7608 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
7609 starget_printk(KERN_INFO, scsi_target(cmd->device),
7610 "WARM TARGET DEVICE RESET FAILED - "
7611 "marker iocb failed.\n");
7612 return FAILED;
7613 }
7614
7615 starget_printk(KERN_INFO, scsi_target(cmd->device),
7616 "WARM TARGET RESET SUCCEEDED.\n");
7617 return SUCCESS;
7618 }
7619
7620 /**
7621 * qla4xxx_is_eh_active - check if error handler is running
7622 * @shost: Pointer to SCSI Host struct
7623 *
7624 * This routine finds that if reset host is called in EH
7625 * scenario or from some application like sg_reset
7626 **/
qla4xxx_is_eh_active(struct Scsi_Host * shost)7627 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
7628 {
7629 if (shost->shost_state == SHOST_RECOVERY)
7630 return 1;
7631 return 0;
7632 }
7633
7634 /**
7635 * qla4xxx_eh_host_reset - kernel callback
7636 * @cmd: Pointer to Linux's SCSI command structure
7637 *
7638 * This routine is invoked by the Linux kernel to perform fatal error
7639 * recovery on the specified adapter.
7640 **/
qla4xxx_eh_host_reset(struct scsi_cmnd * cmd)7641 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
7642 {
7643 int return_status = FAILED;
7644 struct scsi_qla_host *ha;
7645
7646 ha = to_qla_host(cmd->device->host);
7647
7648 if (is_qla8032(ha) && ql4xdontresethba)
7649 qla4_83xx_set_idc_dontreset(ha);
7650
7651 /*
7652 * For ISP8324, if IDC_CTRL DONTRESET_BIT0 is set by other
7653 * protocol drivers, we should not set device_state to
7654 * NEED_RESET
7655 */
7656 if (ql4xdontresethba ||
7657 (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
7658 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
7659 ha->host_no, __func__));
7660
7661 /* Clear outstanding srb in queues */
7662 if (qla4xxx_is_eh_active(cmd->device->host))
7663 qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
7664
7665 return FAILED;
7666 }
7667
7668 ql4_printk(KERN_INFO, ha,
7669 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
7670 cmd->device->channel, cmd->device->id, cmd->device->lun);
7671
7672 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
7673 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
7674 "DEAD.\n", ha->host_no, cmd->device->channel,
7675 __func__));
7676
7677 return FAILED;
7678 }
7679
7680 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7681 if (is_qla80XX(ha))
7682 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
7683 else
7684 set_bit(DPC_RESET_HA, &ha->dpc_flags);
7685 }
7686
7687 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
7688 return_status = SUCCESS;
7689
7690 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
7691 return_status == FAILED ? "FAILED" : "SUCCEEDED");
7692
7693 return return_status;
7694 }
7695
qla4xxx_context_reset(struct scsi_qla_host * ha)7696 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
7697 {
7698 uint32_t mbox_cmd[MBOX_REG_COUNT];
7699 uint32_t mbox_sts[MBOX_REG_COUNT];
7700 struct addr_ctrl_blk_def *acb = NULL;
7701 uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
7702 int rval = QLA_SUCCESS;
7703 dma_addr_t acb_dma;
7704
7705 acb = dma_alloc_coherent(&ha->pdev->dev,
7706 sizeof(struct addr_ctrl_blk_def),
7707 &acb_dma, GFP_KERNEL);
7708 if (!acb) {
7709 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
7710 __func__);
7711 rval = -ENOMEM;
7712 goto exit_port_reset;
7713 }
7714
7715 memset(acb, 0, acb_len);
7716
7717 rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
7718 if (rval != QLA_SUCCESS) {
7719 rval = -EIO;
7720 goto exit_free_acb;
7721 }
7722
7723 rval = qla4xxx_disable_acb(ha);
7724 if (rval != QLA_SUCCESS) {
7725 rval = -EIO;
7726 goto exit_free_acb;
7727 }
7728
7729 wait_for_completion_timeout(&ha->disable_acb_comp,
7730 DISABLE_ACB_TOV * HZ);
7731
7732 rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
7733 if (rval != QLA_SUCCESS) {
7734 rval = -EIO;
7735 goto exit_free_acb;
7736 }
7737
7738 exit_free_acb:
7739 dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
7740 acb, acb_dma);
7741 exit_port_reset:
7742 DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
7743 rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
7744 return rval;
7745 }
7746
qla4xxx_host_reset(struct Scsi_Host * shost,int reset_type)7747 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
7748 {
7749 struct scsi_qla_host *ha = to_qla_host(shost);
7750 int rval = QLA_SUCCESS;
7751 uint32_t idc_ctrl;
7752
7753 if (ql4xdontresethba) {
7754 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
7755 __func__));
7756 rval = -EPERM;
7757 goto exit_host_reset;
7758 }
7759
7760 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
7761 goto recover_adapter;
7762
7763 switch (reset_type) {
7764 case SCSI_ADAPTER_RESET:
7765 set_bit(DPC_RESET_HA, &ha->dpc_flags);
7766 break;
7767 case SCSI_FIRMWARE_RESET:
7768 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7769 if (is_qla80XX(ha))
7770 /* set firmware context reset */
7771 set_bit(DPC_RESET_HA_FW_CONTEXT,
7772 &ha->dpc_flags);
7773 else {
7774 rval = qla4xxx_context_reset(ha);
7775 goto exit_host_reset;
7776 }
7777 }
7778 break;
7779 }
7780
7781 recover_adapter:
7782 /* For ISP83XX set graceful reset bit in IDC_DRV_CTRL if
7783 * reset is issued by application */
7784 if (is_qla8032(ha) && test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7785 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
7786 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
7787 (idc_ctrl | GRACEFUL_RESET_BIT1));
7788 }
7789
7790 rval = qla4xxx_recover_adapter(ha);
7791 if (rval != QLA_SUCCESS) {
7792 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
7793 __func__));
7794 rval = -EIO;
7795 }
7796
7797 exit_host_reset:
7798 return rval;
7799 }
7800
7801 /* PCI AER driver recovers from all correctable errors w/o
7802 * driver intervention. For uncorrectable errors PCI AER
7803 * driver calls the following device driver's callbacks
7804 *
7805 * - Fatal Errors - link_reset
7806 * - Non-Fatal Errors - driver's pci_error_detected() which
7807 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
7808 *
7809 * PCI AER driver calls
7810 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
7811 * returns RECOVERED or NEED_RESET if fw_hung
7812 * NEED_RESET - driver's slot_reset()
7813 * DISCONNECT - device is dead & cannot recover
7814 * RECOVERED - driver's pci_resume()
7815 */
7816 static pci_ers_result_t
qla4xxx_pci_error_detected(struct pci_dev * pdev,pci_channel_state_t state)7817 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
7818 {
7819 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7820
7821 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
7822 ha->host_no, __func__, state);
7823
7824 if (!is_aer_supported(ha))
7825 return PCI_ERS_RESULT_NONE;
7826
7827 switch (state) {
7828 case pci_channel_io_normal:
7829 clear_bit(AF_EEH_BUSY, &ha->flags);
7830 return PCI_ERS_RESULT_CAN_RECOVER;
7831 case pci_channel_io_frozen:
7832 set_bit(AF_EEH_BUSY, &ha->flags);
7833 qla4xxx_mailbox_premature_completion(ha);
7834 qla4xxx_free_irqs(ha);
7835 pci_disable_device(pdev);
7836 /* Return back all IOs */
7837 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
7838 return PCI_ERS_RESULT_NEED_RESET;
7839 case pci_channel_io_perm_failure:
7840 set_bit(AF_EEH_BUSY, &ha->flags);
7841 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
7842 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
7843 return PCI_ERS_RESULT_DISCONNECT;
7844 }
7845 return PCI_ERS_RESULT_NEED_RESET;
7846 }
7847
7848 /**
7849 * qla4xxx_pci_mmio_enabled() gets called if
7850 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
7851 * and read/write to the device still works.
7852 **/
7853 static pci_ers_result_t
qla4xxx_pci_mmio_enabled(struct pci_dev * pdev)7854 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
7855 {
7856 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7857
7858 if (!is_aer_supported(ha))
7859 return PCI_ERS_RESULT_NONE;
7860
7861 return PCI_ERS_RESULT_RECOVERED;
7862 }
7863
qla4_8xxx_error_recovery(struct scsi_qla_host * ha)7864 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
7865 {
7866 uint32_t rval = QLA_ERROR;
7867 int fn;
7868 struct pci_dev *other_pdev = NULL;
7869
7870 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
7871
7872 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
7873
7874 if (test_bit(AF_ONLINE, &ha->flags)) {
7875 clear_bit(AF_ONLINE, &ha->flags);
7876 clear_bit(AF_LINK_UP, &ha->flags);
7877 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
7878 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
7879 }
7880
7881 fn = PCI_FUNC(ha->pdev->devfn);
7882 while (fn > 0) {
7883 fn--;
7884 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
7885 "func %x\n", ha->host_no, __func__, fn);
7886 /* Get the pci device given the domain, bus,
7887 * slot/function number */
7888 other_pdev =
7889 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7890 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7891 fn));
7892
7893 if (!other_pdev)
7894 continue;
7895
7896 if (atomic_read(&other_pdev->enable_cnt)) {
7897 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
7898 "func in enabled state%x\n", ha->host_no,
7899 __func__, fn);
7900 pci_dev_put(other_pdev);
7901 break;
7902 }
7903 pci_dev_put(other_pdev);
7904 }
7905
7906 /* The first function on the card, the reset owner will
7907 * start & initialize the firmware. The other functions
7908 * on the card will reset the firmware context
7909 */
7910 if (!fn) {
7911 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
7912 "0x%x is the owner\n", ha->host_no, __func__,
7913 ha->pdev->devfn);
7914
7915 ha->isp_ops->idc_lock(ha);
7916 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7917 QLA8XXX_DEV_COLD);
7918 ha->isp_ops->idc_unlock(ha);
7919
7920 rval = qla4_8xxx_update_idc_reg(ha);
7921 if (rval == QLA_ERROR) {
7922 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
7923 ha->host_no, __func__);
7924 ha->isp_ops->idc_lock(ha);
7925 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7926 QLA8XXX_DEV_FAILED);
7927 ha->isp_ops->idc_unlock(ha);
7928 goto exit_error_recovery;
7929 }
7930
7931 clear_bit(AF_FW_RECOVERY, &ha->flags);
7932 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
7933
7934 if (rval != QLA_SUCCESS) {
7935 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
7936 "FAILED\n", ha->host_no, __func__);
7937 ha->isp_ops->idc_lock(ha);
7938 qla4_8xxx_clear_drv_active(ha);
7939 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7940 QLA8XXX_DEV_FAILED);
7941 ha->isp_ops->idc_unlock(ha);
7942 } else {
7943 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
7944 "READY\n", ha->host_no, __func__);
7945 ha->isp_ops->idc_lock(ha);
7946 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7947 QLA8XXX_DEV_READY);
7948 /* Clear driver state register */
7949 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
7950 qla4_8xxx_set_drv_active(ha);
7951 ha->isp_ops->idc_unlock(ha);
7952 ha->isp_ops->enable_intrs(ha);
7953 }
7954 } else {
7955 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
7956 "the reset owner\n", ha->host_no, __func__,
7957 ha->pdev->devfn);
7958 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
7959 QLA8XXX_DEV_READY)) {
7960 clear_bit(AF_FW_RECOVERY, &ha->flags);
7961 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
7962 if (rval == QLA_SUCCESS)
7963 ha->isp_ops->enable_intrs(ha);
7964
7965 ha->isp_ops->idc_lock(ha);
7966 qla4_8xxx_set_drv_active(ha);
7967 ha->isp_ops->idc_unlock(ha);
7968 }
7969 }
7970 exit_error_recovery:
7971 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
7972 return rval;
7973 }
7974
7975 static pci_ers_result_t
qla4xxx_pci_slot_reset(struct pci_dev * pdev)7976 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
7977 {
7978 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
7979 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7980 int rc;
7981
7982 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
7983 ha->host_no, __func__);
7984
7985 if (!is_aer_supported(ha))
7986 return PCI_ERS_RESULT_NONE;
7987
7988 /* Restore the saved state of PCIe device -
7989 * BAR registers, PCI Config space, PCIX, MSI,
7990 * IOV states
7991 */
7992 pci_restore_state(pdev);
7993
7994 /* pci_restore_state() clears the saved_state flag of the device
7995 * save restored state which resets saved_state flag
7996 */
7997 pci_save_state(pdev);
7998
7999 /* Initialize device or resume if in suspended state */
8000 rc = pci_enable_device(pdev);
8001 if (rc) {
8002 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
8003 "device after reset\n", ha->host_no, __func__);
8004 goto exit_slot_reset;
8005 }
8006
8007 ha->isp_ops->disable_intrs(ha);
8008
8009 if (is_qla80XX(ha)) {
8010 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
8011 ret = PCI_ERS_RESULT_RECOVERED;
8012 goto exit_slot_reset;
8013 } else
8014 goto exit_slot_reset;
8015 }
8016
8017 exit_slot_reset:
8018 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
8019 "device after reset\n", ha->host_no, __func__, ret);
8020 return ret;
8021 }
8022
8023 static void
qla4xxx_pci_resume(struct pci_dev * pdev)8024 qla4xxx_pci_resume(struct pci_dev *pdev)
8025 {
8026 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8027 int ret;
8028
8029 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
8030 ha->host_no, __func__);
8031
8032 ret = qla4xxx_wait_for_hba_online(ha);
8033 if (ret != QLA_SUCCESS) {
8034 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
8035 "resume I/O from slot/link_reset\n", ha->host_no,
8036 __func__);
8037 }
8038
8039 pci_cleanup_aer_uncorrect_error_status(pdev);
8040 clear_bit(AF_EEH_BUSY, &ha->flags);
8041 }
8042
8043 static const struct pci_error_handlers qla4xxx_err_handler = {
8044 .error_detected = qla4xxx_pci_error_detected,
8045 .mmio_enabled = qla4xxx_pci_mmio_enabled,
8046 .slot_reset = qla4xxx_pci_slot_reset,
8047 .resume = qla4xxx_pci_resume,
8048 };
8049
8050 static struct pci_device_id qla4xxx_pci_tbl[] = {
8051 {
8052 .vendor = PCI_VENDOR_ID_QLOGIC,
8053 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
8054 .subvendor = PCI_ANY_ID,
8055 .subdevice = PCI_ANY_ID,
8056 },
8057 {
8058 .vendor = PCI_VENDOR_ID_QLOGIC,
8059 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
8060 .subvendor = PCI_ANY_ID,
8061 .subdevice = PCI_ANY_ID,
8062 },
8063 {
8064 .vendor = PCI_VENDOR_ID_QLOGIC,
8065 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
8066 .subvendor = PCI_ANY_ID,
8067 .subdevice = PCI_ANY_ID,
8068 },
8069 {
8070 .vendor = PCI_VENDOR_ID_QLOGIC,
8071 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
8072 .subvendor = PCI_ANY_ID,
8073 .subdevice = PCI_ANY_ID,
8074 },
8075 {
8076 .vendor = PCI_VENDOR_ID_QLOGIC,
8077 .device = PCI_DEVICE_ID_QLOGIC_ISP8324,
8078 .subvendor = PCI_ANY_ID,
8079 .subdevice = PCI_ANY_ID,
8080 },
8081 {0, 0},
8082 };
8083 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
8084
8085 static struct pci_driver qla4xxx_pci_driver = {
8086 .name = DRIVER_NAME,
8087 .id_table = qla4xxx_pci_tbl,
8088 .probe = qla4xxx_probe_adapter,
8089 .remove = qla4xxx_remove_adapter,
8090 .err_handler = &qla4xxx_err_handler,
8091 };
8092
qla4xxx_module_init(void)8093 static int __init qla4xxx_module_init(void)
8094 {
8095 int ret;
8096
8097 /* Allocate cache for SRBs. */
8098 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
8099 SLAB_HWCACHE_ALIGN, NULL);
8100 if (srb_cachep == NULL) {
8101 printk(KERN_ERR
8102 "%s: Unable to allocate SRB cache..."
8103 "Failing load!\n", DRIVER_NAME);
8104 ret = -ENOMEM;
8105 goto no_srp_cache;
8106 }
8107
8108 /* Derive version string. */
8109 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
8110 if (ql4xextended_error_logging)
8111 strcat(qla4xxx_version_str, "-debug");
8112
8113 qla4xxx_scsi_transport =
8114 iscsi_register_transport(&qla4xxx_iscsi_transport);
8115 if (!qla4xxx_scsi_transport){
8116 ret = -ENODEV;
8117 goto release_srb_cache;
8118 }
8119
8120 ret = pci_register_driver(&qla4xxx_pci_driver);
8121 if (ret)
8122 goto unregister_transport;
8123
8124 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
8125 return 0;
8126
8127 unregister_transport:
8128 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8129 release_srb_cache:
8130 kmem_cache_destroy(srb_cachep);
8131 no_srp_cache:
8132 return ret;
8133 }
8134
qla4xxx_module_exit(void)8135 static void __exit qla4xxx_module_exit(void)
8136 {
8137 pci_unregister_driver(&qla4xxx_pci_driver);
8138 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8139 kmem_cache_destroy(srb_cachep);
8140 }
8141
8142 module_init(qla4xxx_module_init);
8143 module_exit(qla4xxx_module_exit);
8144
8145 MODULE_AUTHOR("QLogic Corporation");
8146 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
8147 MODULE_LICENSE("GPL");
8148 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
8149