Commit | Line | Data |
---|---|---|
2d70c103 NB |
1 | /* |
2 | * qla_target.c SCSI LLD infrastructure for QLogic 22xx/23xx/24xx/25xx | |
3 | * | |
4 | * based on qla2x00t.c code: | |
5 | * | |
6 | * Copyright (C) 2004 - 2010 Vladislav Bolkhovitin <vst@vlnb.net> | |
7 | * Copyright (C) 2004 - 2005 Leonid Stoljar | |
8 | * Copyright (C) 2006 Nathaniel Clark <nate@misrule.us> | |
9 | * Copyright (C) 2006 - 2010 ID7 Ltd. | |
10 | * | |
11 | * Forward port and refactoring to modern qla2xxx and target/configfs | |
12 | * | |
13 | * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * as published by the Free Software Foundation, version 2 | |
18 | * of the License. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/types.h> | |
2d70c103 NB |
29 | #include <linux/blkdev.h> |
30 | #include <linux/interrupt.h> | |
31 | #include <linux/pci.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/list.h> | |
34 | #include <linux/workqueue.h> | |
35 | #include <asm/unaligned.h> | |
36 | #include <scsi/scsi.h> | |
37 | #include <scsi/scsi_host.h> | |
38 | #include <scsi/scsi_tcq.h> | |
39 | #include <target/target_core_base.h> | |
40 | #include <target/target_core_fabric.h> | |
41 | ||
42 | #include "qla_def.h" | |
43 | #include "qla_target.h" | |
44 | ||
45 | static char *qlini_mode = QLA2XXX_INI_MODE_STR_ENABLED; | |
46 | module_param(qlini_mode, charp, S_IRUGO); | |
47 | MODULE_PARM_DESC(qlini_mode, | |
48 | "Determines when initiator mode will be enabled. Possible values: " | |
49 | "\"exclusive\" - initiator mode will be enabled on load, " | |
50 | "disabled on enabling target mode and then on disabling target mode " | |
51 | "enabled back; " | |
52 | "\"disabled\" - initiator mode will never be enabled; " | |
53 | "\"enabled\" (default) - initiator mode will always stay enabled."); | |
54 | ||
55 | static int ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; | |
56 | ||
57 | /* | |
58 | * From scsi/fc/fc_fcp.h | |
59 | */ | |
60 | enum fcp_resp_rsp_codes { | |
61 | FCP_TMF_CMPL = 0, | |
62 | FCP_DATA_LEN_INVALID = 1, | |
63 | FCP_CMND_FIELDS_INVALID = 2, | |
64 | FCP_DATA_PARAM_MISMATCH = 3, | |
65 | FCP_TMF_REJECTED = 4, | |
66 | FCP_TMF_FAILED = 5, | |
67 | FCP_TMF_INVALID_LUN = 9, | |
68 | }; | |
69 | ||
70 | /* | |
71 | * fc_pri_ta from scsi/fc/fc_fcp.h | |
72 | */ | |
73 | #define FCP_PTA_SIMPLE 0 /* simple task attribute */ | |
74 | #define FCP_PTA_HEADQ 1 /* head of queue task attribute */ | |
75 | #define FCP_PTA_ORDERED 2 /* ordered task attribute */ | |
76 | #define FCP_PTA_ACA 4 /* auto. contigent allegiance */ | |
77 | #define FCP_PTA_MASK 7 /* mask for task attribute field */ | |
78 | #define FCP_PRI_SHIFT 3 /* priority field starts in bit 3 */ | |
79 | #define FCP_PRI_RESVD_MASK 0x80 /* reserved bits in priority field */ | |
80 | ||
81 | /* | |
82 | * This driver calls qla2x00_alloc_iocbs() and qla2x00_issue_marker(), which | |
83 | * must be called under HW lock and could unlock/lock it inside. | |
84 | * It isn't an issue, since in the current implementation on the time when | |
85 | * those functions are called: | |
86 | * | |
87 | * - Either context is IRQ and only IRQ handler can modify HW data, | |
88 | * including rings related fields, | |
89 | * | |
90 | * - Or access to target mode variables from struct qla_tgt doesn't | |
91 | * cross those functions boundaries, except tgt_stop, which | |
92 | * additionally protected by irq_cmd_count. | |
93 | */ | |
94 | /* Predefs for callbacks handed to qla2xxx LLD */ | |
95 | static void qlt_24xx_atio_pkt(struct scsi_qla_host *ha, | |
96 | struct atio_from_isp *pkt); | |
97 | static void qlt_response_pkt(struct scsi_qla_host *ha, response_t *pkt); | |
98 | static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, | |
99 | int fn, void *iocb, int flags); | |
100 | static void qlt_send_term_exchange(struct scsi_qla_host *ha, struct qla_tgt_cmd | |
101 | *cmd, struct atio_from_isp *atio, int ha_locked); | |
102 | static void qlt_reject_free_srr_imm(struct scsi_qla_host *ha, | |
103 | struct qla_tgt_srr_imm *imm, int ha_lock); | |
104 | /* | |
105 | * Global Variables | |
106 | */ | |
107 | static struct kmem_cache *qla_tgt_cmd_cachep; | |
108 | static struct kmem_cache *qla_tgt_mgmt_cmd_cachep; | |
109 | static mempool_t *qla_tgt_mgmt_cmd_mempool; | |
110 | static struct workqueue_struct *qla_tgt_wq; | |
111 | static DEFINE_MUTEX(qla_tgt_mutex); | |
112 | static LIST_HEAD(qla_tgt_glist); | |
113 | ||
114 | /* ha->hardware_lock supposed to be held on entry (to protect tgt->sess_list) */ | |
115 | static struct qla_tgt_sess *qlt_find_sess_by_port_name( | |
116 | struct qla_tgt *tgt, | |
117 | const uint8_t *port_name) | |
118 | { | |
119 | struct qla_tgt_sess *sess; | |
120 | ||
121 | list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) { | |
122 | if (!memcmp(sess->port_name, port_name, WWN_SIZE)) | |
123 | return sess; | |
124 | } | |
125 | ||
126 | return NULL; | |
127 | } | |
128 | ||
129 | /* Might release hw lock, then reaquire!! */ | |
130 | static inline int qlt_issue_marker(struct scsi_qla_host *vha, int vha_locked) | |
131 | { | |
132 | /* Send marker if required */ | |
133 | if (unlikely(vha->marker_needed != 0)) { | |
134 | int rc = qla2x00_issue_marker(vha, vha_locked); | |
135 | if (rc != QLA_SUCCESS) { | |
136 | ql_dbg(ql_dbg_tgt, vha, 0xe03d, | |
137 | "qla_target(%d): issue_marker() failed\n", | |
138 | vha->vp_idx); | |
139 | } | |
140 | return rc; | |
141 | } | |
142 | return QLA_SUCCESS; | |
143 | } | |
144 | ||
145 | static inline | |
146 | struct scsi_qla_host *qlt_find_host_by_d_id(struct scsi_qla_host *vha, | |
147 | uint8_t *d_id) | |
148 | { | |
149 | struct qla_hw_data *ha = vha->hw; | |
150 | uint8_t vp_idx; | |
151 | ||
152 | if ((vha->d_id.b.area != d_id[1]) || (vha->d_id.b.domain != d_id[0])) | |
153 | return NULL; | |
154 | ||
155 | if (vha->d_id.b.al_pa == d_id[2]) | |
156 | return vha; | |
157 | ||
158 | BUG_ON(ha->tgt.tgt_vp_map == NULL); | |
159 | vp_idx = ha->tgt.tgt_vp_map[d_id[2]].idx; | |
160 | if (likely(test_bit(vp_idx, ha->vp_idx_map))) | |
161 | return ha->tgt.tgt_vp_map[vp_idx].vha; | |
162 | ||
163 | return NULL; | |
164 | } | |
165 | ||
166 | static inline | |
167 | struct scsi_qla_host *qlt_find_host_by_vp_idx(struct scsi_qla_host *vha, | |
168 | uint16_t vp_idx) | |
169 | { | |
170 | struct qla_hw_data *ha = vha->hw; | |
171 | ||
172 | if (vha->vp_idx == vp_idx) | |
173 | return vha; | |
174 | ||
175 | BUG_ON(ha->tgt.tgt_vp_map == NULL); | |
176 | if (likely(test_bit(vp_idx, ha->vp_idx_map))) | |
177 | return ha->tgt.tgt_vp_map[vp_idx].vha; | |
178 | ||
179 | return NULL; | |
180 | } | |
181 | ||
182 | void qlt_24xx_atio_pkt_all_vps(struct scsi_qla_host *vha, | |
183 | struct atio_from_isp *atio) | |
184 | { | |
185 | switch (atio->u.raw.entry_type) { | |
186 | case ATIO_TYPE7: | |
187 | { | |
188 | struct scsi_qla_host *host = qlt_find_host_by_d_id(vha, | |
189 | atio->u.isp24.fcp_hdr.d_id); | |
190 | if (unlikely(NULL == host)) { | |
191 | ql_dbg(ql_dbg_tgt, vha, 0xe03e, | |
192 | "qla_target(%d): Received ATIO_TYPE7 " | |
193 | "with unknown d_id %x:%x:%x\n", vha->vp_idx, | |
194 | atio->u.isp24.fcp_hdr.d_id[0], | |
195 | atio->u.isp24.fcp_hdr.d_id[1], | |
196 | atio->u.isp24.fcp_hdr.d_id[2]); | |
197 | break; | |
198 | } | |
199 | qlt_24xx_atio_pkt(host, atio); | |
200 | break; | |
201 | } | |
202 | ||
203 | case IMMED_NOTIFY_TYPE: | |
204 | { | |
205 | struct scsi_qla_host *host = vha; | |
206 | struct imm_ntfy_from_isp *entry = | |
207 | (struct imm_ntfy_from_isp *)atio; | |
208 | ||
209 | if ((entry->u.isp24.vp_index != 0xFF) && | |
210 | (entry->u.isp24.nport_handle != 0xFFFF)) { | |
211 | host = qlt_find_host_by_vp_idx(vha, | |
212 | entry->u.isp24.vp_index); | |
213 | if (unlikely(!host)) { | |
214 | ql_dbg(ql_dbg_tgt, vha, 0xe03f, | |
215 | "qla_target(%d): Received " | |
216 | "ATIO (IMMED_NOTIFY_TYPE) " | |
217 | "with unknown vp_index %d\n", | |
218 | vha->vp_idx, entry->u.isp24.vp_index); | |
219 | break; | |
220 | } | |
221 | } | |
222 | qlt_24xx_atio_pkt(host, atio); | |
223 | break; | |
224 | } | |
225 | ||
226 | default: | |
227 | ql_dbg(ql_dbg_tgt, vha, 0xe040, | |
228 | "qla_target(%d): Received unknown ATIO atio " | |
229 | "type %x\n", vha->vp_idx, atio->u.raw.entry_type); | |
230 | break; | |
231 | } | |
232 | ||
233 | return; | |
234 | } | |
235 | ||
236 | void qlt_response_pkt_all_vps(struct scsi_qla_host *vha, response_t *pkt) | |
237 | { | |
238 | switch (pkt->entry_type) { | |
239 | case CTIO_TYPE7: | |
240 | { | |
241 | struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; | |
242 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
243 | entry->vp_index); | |
244 | if (unlikely(!host)) { | |
245 | ql_dbg(ql_dbg_tgt, vha, 0xe041, | |
246 | "qla_target(%d): Response pkt (CTIO_TYPE7) " | |
247 | "received, with unknown vp_index %d\n", | |
248 | vha->vp_idx, entry->vp_index); | |
249 | break; | |
250 | } | |
251 | qlt_response_pkt(host, pkt); | |
252 | break; | |
253 | } | |
254 | ||
255 | case IMMED_NOTIFY_TYPE: | |
256 | { | |
257 | struct scsi_qla_host *host = vha; | |
258 | struct imm_ntfy_from_isp *entry = | |
259 | (struct imm_ntfy_from_isp *)pkt; | |
260 | ||
261 | host = qlt_find_host_by_vp_idx(vha, entry->u.isp24.vp_index); | |
262 | if (unlikely(!host)) { | |
263 | ql_dbg(ql_dbg_tgt, vha, 0xe042, | |
264 | "qla_target(%d): Response pkt (IMMED_NOTIFY_TYPE) " | |
265 | "received, with unknown vp_index %d\n", | |
266 | vha->vp_idx, entry->u.isp24.vp_index); | |
267 | break; | |
268 | } | |
269 | qlt_response_pkt(host, pkt); | |
270 | break; | |
271 | } | |
272 | ||
273 | case NOTIFY_ACK_TYPE: | |
274 | { | |
275 | struct scsi_qla_host *host = vha; | |
276 | struct nack_to_isp *entry = (struct nack_to_isp *)pkt; | |
277 | ||
278 | if (0xFF != entry->u.isp24.vp_index) { | |
279 | host = qlt_find_host_by_vp_idx(vha, | |
280 | entry->u.isp24.vp_index); | |
281 | if (unlikely(!host)) { | |
282 | ql_dbg(ql_dbg_tgt, vha, 0xe043, | |
283 | "qla_target(%d): Response " | |
284 | "pkt (NOTIFY_ACK_TYPE) " | |
285 | "received, with unknown " | |
286 | "vp_index %d\n", vha->vp_idx, | |
287 | entry->u.isp24.vp_index); | |
288 | break; | |
289 | } | |
290 | } | |
291 | qlt_response_pkt(host, pkt); | |
292 | break; | |
293 | } | |
294 | ||
295 | case ABTS_RECV_24XX: | |
296 | { | |
297 | struct abts_recv_from_24xx *entry = | |
298 | (struct abts_recv_from_24xx *)pkt; | |
299 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
300 | entry->vp_index); | |
301 | if (unlikely(!host)) { | |
302 | ql_dbg(ql_dbg_tgt, vha, 0xe044, | |
303 | "qla_target(%d): Response pkt " | |
304 | "(ABTS_RECV_24XX) received, with unknown " | |
305 | "vp_index %d\n", vha->vp_idx, entry->vp_index); | |
306 | break; | |
307 | } | |
308 | qlt_response_pkt(host, pkt); | |
309 | break; | |
310 | } | |
311 | ||
312 | case ABTS_RESP_24XX: | |
313 | { | |
314 | struct abts_resp_to_24xx *entry = | |
315 | (struct abts_resp_to_24xx *)pkt; | |
316 | struct scsi_qla_host *host = qlt_find_host_by_vp_idx(vha, | |
317 | entry->vp_index); | |
318 | if (unlikely(!host)) { | |
319 | ql_dbg(ql_dbg_tgt, vha, 0xe045, | |
320 | "qla_target(%d): Response pkt " | |
321 | "(ABTS_RECV_24XX) received, with unknown " | |
322 | "vp_index %d\n", vha->vp_idx, entry->vp_index); | |
323 | break; | |
324 | } | |
325 | qlt_response_pkt(host, pkt); | |
326 | break; | |
327 | } | |
328 | ||
329 | default: | |
330 | qlt_response_pkt(vha, pkt); | |
331 | break; | |
332 | } | |
333 | ||
334 | } | |
335 | ||
336 | static void qlt_free_session_done(struct work_struct *work) | |
337 | { | |
338 | struct qla_tgt_sess *sess = container_of(work, struct qla_tgt_sess, | |
339 | free_work); | |
340 | struct qla_tgt *tgt = sess->tgt; | |
341 | struct scsi_qla_host *vha = sess->vha; | |
342 | struct qla_hw_data *ha = vha->hw; | |
343 | ||
344 | BUG_ON(!tgt); | |
345 | /* | |
346 | * Release the target session for FC Nexus from fabric module code. | |
347 | */ | |
348 | if (sess->se_sess != NULL) | |
349 | ha->tgt.tgt_ops->free_session(sess); | |
350 | ||
351 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf001, | |
352 | "Unregistration of sess %p finished\n", sess); | |
353 | ||
354 | kfree(sess); | |
355 | /* | |
356 | * We need to protect against race, when tgt is freed before or | |
357 | * inside wake_up() | |
358 | */ | |
359 | tgt->sess_count--; | |
360 | if (tgt->sess_count == 0) | |
361 | wake_up_all(&tgt->waitQ); | |
362 | } | |
363 | ||
364 | /* ha->hardware_lock supposed to be held on entry */ | |
365 | void qlt_unreg_sess(struct qla_tgt_sess *sess) | |
366 | { | |
367 | struct scsi_qla_host *vha = sess->vha; | |
368 | ||
369 | vha->hw->tgt.tgt_ops->clear_nacl_from_fcport_map(sess); | |
370 | ||
371 | list_del(&sess->sess_list_entry); | |
372 | if (sess->deleted) | |
373 | list_del(&sess->del_list_entry); | |
374 | ||
375 | INIT_WORK(&sess->free_work, qlt_free_session_done); | |
376 | schedule_work(&sess->free_work); | |
377 | } | |
378 | EXPORT_SYMBOL(qlt_unreg_sess); | |
379 | ||
380 | /* ha->hardware_lock supposed to be held on entry */ | |
381 | static int qlt_reset(struct scsi_qla_host *vha, void *iocb, int mcmd) | |
382 | { | |
383 | struct qla_hw_data *ha = vha->hw; | |
384 | struct qla_tgt_sess *sess = NULL; | |
385 | uint32_t unpacked_lun, lun = 0; | |
386 | uint16_t loop_id; | |
387 | int res = 0; | |
388 | struct imm_ntfy_from_isp *n = (struct imm_ntfy_from_isp *)iocb; | |
389 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; | |
390 | ||
391 | loop_id = le16_to_cpu(n->u.isp24.nport_handle); | |
392 | if (loop_id == 0xFFFF) { | |
393 | #if 0 /* FIXME: Re-enable Global event handling.. */ | |
394 | /* Global event */ | |
395 | atomic_inc(&ha->tgt.qla_tgt->tgt_global_resets_count); | |
396 | qlt_clear_tgt_db(ha->tgt.qla_tgt, 1); | |
397 | if (!list_empty(&ha->tgt.qla_tgt->sess_list)) { | |
398 | sess = list_entry(ha->tgt.qla_tgt->sess_list.next, | |
399 | typeof(*sess), sess_list_entry); | |
400 | switch (mcmd) { | |
401 | case QLA_TGT_NEXUS_LOSS_SESS: | |
402 | mcmd = QLA_TGT_NEXUS_LOSS; | |
403 | break; | |
404 | case QLA_TGT_ABORT_ALL_SESS: | |
405 | mcmd = QLA_TGT_ABORT_ALL; | |
406 | break; | |
407 | case QLA_TGT_NEXUS_LOSS: | |
408 | case QLA_TGT_ABORT_ALL: | |
409 | break; | |
410 | default: | |
411 | ql_dbg(ql_dbg_tgt, vha, 0xe046, | |
412 | "qla_target(%d): Not allowed " | |
413 | "command %x in %s", vha->vp_idx, | |
414 | mcmd, __func__); | |
415 | sess = NULL; | |
416 | break; | |
417 | } | |
418 | } else | |
419 | sess = NULL; | |
420 | #endif | |
421 | } else { | |
422 | sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); | |
423 | } | |
424 | ||
425 | ql_dbg(ql_dbg_tgt, vha, 0xe000, | |
426 | "Using sess for qla_tgt_reset: %p\n", sess); | |
427 | if (!sess) { | |
428 | res = -ESRCH; | |
429 | return res; | |
430 | } | |
431 | ||
432 | ql_dbg(ql_dbg_tgt, vha, 0xe047, | |
433 | "scsi(%ld): resetting (session %p from port " | |
434 | "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, " | |
435 | "mcmd %x, loop_id %d)\n", vha->host_no, sess, | |
436 | sess->port_name[0], sess->port_name[1], | |
437 | sess->port_name[2], sess->port_name[3], | |
438 | sess->port_name[4], sess->port_name[5], | |
439 | sess->port_name[6], sess->port_name[7], | |
440 | mcmd, loop_id); | |
441 | ||
442 | lun = a->u.isp24.fcp_cmnd.lun; | |
443 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); | |
444 | ||
445 | return qlt_issue_task_mgmt(sess, unpacked_lun, mcmd, | |
446 | iocb, QLA24XX_MGMT_SEND_NACK); | |
447 | } | |
448 | ||
449 | /* ha->hardware_lock supposed to be held on entry */ | |
450 | static void qlt_schedule_sess_for_deletion(struct qla_tgt_sess *sess, | |
451 | bool immediate) | |
452 | { | |
453 | struct qla_tgt *tgt = sess->tgt; | |
454 | uint32_t dev_loss_tmo = tgt->ha->port_down_retry_count + 5; | |
455 | ||
456 | if (sess->deleted) | |
457 | return; | |
458 | ||
459 | ql_dbg(ql_dbg_tgt, sess->vha, 0xe001, | |
460 | "Scheduling sess %p for deletion\n", sess); | |
461 | list_add_tail(&sess->del_list_entry, &tgt->del_sess_list); | |
462 | sess->deleted = 1; | |
463 | ||
464 | if (immediate) | |
465 | dev_loss_tmo = 0; | |
466 | ||
467 | sess->expires = jiffies + dev_loss_tmo * HZ; | |
468 | ||
469 | ql_dbg(ql_dbg_tgt, sess->vha, 0xe048, | |
470 | "qla_target(%d): session for port %02x:%02x:%02x:" | |
471 | "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for " | |
472 | "deletion in %u secs (expires: %lu) immed: %d\n", | |
473 | sess->vha->vp_idx, | |
474 | sess->port_name[0], sess->port_name[1], | |
475 | sess->port_name[2], sess->port_name[3], | |
476 | sess->port_name[4], sess->port_name[5], | |
477 | sess->port_name[6], sess->port_name[7], | |
478 | sess->loop_id, dev_loss_tmo, sess->expires, immediate); | |
479 | ||
480 | if (immediate) | |
481 | schedule_delayed_work(&tgt->sess_del_work, 0); | |
482 | else | |
483 | schedule_delayed_work(&tgt->sess_del_work, | |
484 | jiffies - sess->expires); | |
485 | } | |
486 | ||
487 | /* ha->hardware_lock supposed to be held on entry */ | |
488 | static void qlt_clear_tgt_db(struct qla_tgt *tgt, bool local_only) | |
489 | { | |
490 | struct qla_tgt_sess *sess; | |
491 | ||
492 | list_for_each_entry(sess, &tgt->sess_list, sess_list_entry) | |
493 | qlt_schedule_sess_for_deletion(sess, true); | |
494 | ||
495 | /* At this point tgt could be already dead */ | |
496 | } | |
497 | ||
498 | static int qla24xx_get_loop_id(struct scsi_qla_host *vha, const uint8_t *s_id, | |
499 | uint16_t *loop_id) | |
500 | { | |
501 | struct qla_hw_data *ha = vha->hw; | |
502 | dma_addr_t gid_list_dma; | |
503 | struct gid_list_info *gid_list; | |
504 | char *id_iter; | |
505 | int res, rc, i; | |
506 | uint16_t entries; | |
507 | ||
508 | gid_list = dma_alloc_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), | |
509 | &gid_list_dma, GFP_KERNEL); | |
510 | if (!gid_list) { | |
511 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf044, | |
512 | "qla_target(%d): DMA Alloc failed of %u\n", | |
513 | vha->vp_idx, qla2x00_gid_list_size(ha)); | |
514 | return -ENOMEM; | |
515 | } | |
516 | ||
517 | /* Get list of logged in devices */ | |
518 | rc = qla2x00_get_id_list(vha, gid_list, gid_list_dma, &entries); | |
519 | if (rc != QLA_SUCCESS) { | |
520 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf045, | |
521 | "qla_target(%d): get_id_list() failed: %x\n", | |
522 | vha->vp_idx, rc); | |
523 | res = -1; | |
524 | goto out_free_id_list; | |
525 | } | |
526 | ||
527 | id_iter = (char *)gid_list; | |
528 | res = -1; | |
529 | for (i = 0; i < entries; i++) { | |
530 | struct gid_list_info *gid = (struct gid_list_info *)id_iter; | |
531 | if ((gid->al_pa == s_id[2]) && | |
532 | (gid->area == s_id[1]) && | |
533 | (gid->domain == s_id[0])) { | |
534 | *loop_id = le16_to_cpu(gid->loop_id); | |
535 | res = 0; | |
536 | break; | |
537 | } | |
538 | id_iter += ha->gid_list_info_size; | |
539 | } | |
540 | ||
541 | out_free_id_list: | |
542 | dma_free_coherent(&ha->pdev->dev, qla2x00_gid_list_size(ha), | |
543 | gid_list, gid_list_dma); | |
544 | return res; | |
545 | } | |
546 | ||
547 | static bool qlt_check_fcport_exist(struct scsi_qla_host *vha, | |
548 | struct qla_tgt_sess *sess) | |
549 | { | |
550 | struct qla_hw_data *ha = vha->hw; | |
551 | struct qla_port_24xx_data *pmap24; | |
552 | bool res, found = false; | |
553 | int rc, i; | |
554 | uint16_t loop_id = 0xFFFF; /* to eliminate compiler's warning */ | |
555 | uint16_t entries; | |
556 | void *pmap; | |
557 | int pmap_len; | |
558 | fc_port_t *fcport; | |
559 | int global_resets; | |
560 | ||
561 | retry: | |
562 | global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count); | |
563 | ||
564 | rc = qla2x00_get_node_name_list(vha, &pmap, &pmap_len); | |
565 | if (rc != QLA_SUCCESS) { | |
566 | res = false; | |
567 | goto out; | |
568 | } | |
569 | ||
570 | pmap24 = pmap; | |
571 | entries = pmap_len/sizeof(*pmap24); | |
572 | ||
573 | for (i = 0; i < entries; ++i) { | |
574 | if (!memcmp(sess->port_name, pmap24[i].port_name, WWN_SIZE)) { | |
575 | loop_id = le16_to_cpu(pmap24[i].loop_id); | |
576 | found = true; | |
577 | break; | |
578 | } | |
579 | } | |
580 | ||
581 | kfree(pmap); | |
582 | ||
583 | if (!found) { | |
584 | res = false; | |
585 | goto out; | |
586 | } | |
587 | ||
588 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf046, | |
589 | "qlt_check_fcport_exist(): loop_id %d", loop_id); | |
590 | ||
591 | fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); | |
592 | if (fcport == NULL) { | |
593 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf047, | |
594 | "qla_target(%d): Allocation of tmp FC port failed", | |
595 | vha->vp_idx); | |
596 | res = false; | |
597 | goto out; | |
598 | } | |
599 | ||
600 | fcport->loop_id = loop_id; | |
601 | ||
602 | rc = qla2x00_get_port_database(vha, fcport, 0); | |
603 | if (rc != QLA_SUCCESS) { | |
604 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf048, | |
605 | "qla_target(%d): Failed to retrieve fcport " | |
606 | "information -- get_port_database() returned %x " | |
607 | "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); | |
608 | res = false; | |
609 | goto out_free_fcport; | |
610 | } | |
611 | ||
612 | if (global_resets != | |
613 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) { | |
614 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf002, | |
615 | "qla_target(%d): global reset during session discovery" | |
616 | " (counter was %d, new %d), retrying", | |
617 | vha->vp_idx, global_resets, | |
618 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)); | |
619 | goto retry; | |
620 | } | |
621 | ||
622 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003, | |
623 | "Updating sess %p s_id %x:%x:%x, loop_id %d) to d_id %x:%x:%x, " | |
624 | "loop_id %d", sess, sess->s_id.b.domain, sess->s_id.b.al_pa, | |
625 | sess->s_id.b.area, sess->loop_id, fcport->d_id.b.domain, | |
626 | fcport->d_id.b.al_pa, fcport->d_id.b.area, fcport->loop_id); | |
627 | ||
628 | sess->s_id = fcport->d_id; | |
629 | sess->loop_id = fcport->loop_id; | |
630 | sess->conf_compl_supported = !!(fcport->flags & | |
631 | FCF_CONF_COMP_SUPPORTED); | |
632 | ||
633 | res = true; | |
634 | ||
635 | out_free_fcport: | |
636 | kfree(fcport); | |
637 | ||
638 | out: | |
639 | return res; | |
640 | } | |
641 | ||
642 | /* ha->hardware_lock supposed to be held on entry */ | |
643 | static void qlt_undelete_sess(struct qla_tgt_sess *sess) | |
644 | { | |
645 | BUG_ON(!sess->deleted); | |
646 | ||
647 | list_del(&sess->del_list_entry); | |
648 | sess->deleted = 0; | |
649 | } | |
650 | ||
651 | static void qlt_del_sess_work_fn(struct delayed_work *work) | |
652 | { | |
653 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, | |
654 | sess_del_work); | |
655 | struct scsi_qla_host *vha = tgt->vha; | |
656 | struct qla_hw_data *ha = vha->hw; | |
657 | struct qla_tgt_sess *sess; | |
658 | unsigned long flags; | |
659 | ||
660 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
661 | while (!list_empty(&tgt->del_sess_list)) { | |
662 | sess = list_entry(tgt->del_sess_list.next, typeof(*sess), | |
663 | del_list_entry); | |
664 | if (time_after_eq(jiffies, sess->expires)) { | |
665 | bool cancel; | |
666 | ||
667 | qlt_undelete_sess(sess); | |
668 | ||
669 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
670 | cancel = qlt_check_fcport_exist(vha, sess); | |
671 | ||
672 | if (cancel) { | |
673 | if (sess->deleted) { | |
674 | /* | |
675 | * sess was again deleted while we were | |
676 | * discovering it | |
677 | */ | |
678 | spin_lock_irqsave(&ha->hardware_lock, | |
679 | flags); | |
680 | continue; | |
681 | } | |
682 | ||
683 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf049, | |
684 | "qla_target(%d): cancel deletion of " | |
685 | "session for port %02x:%02x:%02x:%02x:%02x:" | |
686 | "%02x:%02x:%02x (loop ID %d), because " | |
687 | " it isn't deleted by firmware", | |
688 | vha->vp_idx, sess->port_name[0], | |
689 | sess->port_name[1], sess->port_name[2], | |
690 | sess->port_name[3], sess->port_name[4], | |
691 | sess->port_name[5], sess->port_name[6], | |
692 | sess->port_name[7], sess->loop_id); | |
693 | } else { | |
694 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf004, | |
695 | "Timeout: sess %p about to be deleted\n", | |
696 | sess); | |
697 | ha->tgt.tgt_ops->shutdown_sess(sess); | |
698 | ha->tgt.tgt_ops->put_sess(sess); | |
699 | } | |
700 | ||
701 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
702 | } else { | |
703 | schedule_delayed_work(&tgt->sess_del_work, | |
704 | jiffies - sess->expires); | |
705 | break; | |
706 | } | |
707 | } | |
708 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
709 | } | |
710 | ||
711 | /* | |
712 | * Adds an extra ref to allow to drop hw lock after adding sess to the list. | |
713 | * Caller must put it. | |
714 | */ | |
715 | static struct qla_tgt_sess *qlt_create_sess( | |
716 | struct scsi_qla_host *vha, | |
717 | fc_port_t *fcport, | |
718 | bool local) | |
719 | { | |
720 | struct qla_hw_data *ha = vha->hw; | |
721 | struct qla_tgt_sess *sess; | |
722 | unsigned long flags; | |
723 | unsigned char be_sid[3]; | |
724 | ||
725 | /* Check to avoid double sessions */ | |
726 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
727 | list_for_each_entry(sess, &ha->tgt.qla_tgt->sess_list, | |
728 | sess_list_entry) { | |
729 | if (!memcmp(sess->port_name, fcport->port_name, WWN_SIZE)) { | |
730 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf005, | |
731 | "Double sess %p found (s_id %x:%x:%x, " | |
732 | "loop_id %d), updating to d_id %x:%x:%x, " | |
733 | "loop_id %d", sess, sess->s_id.b.domain, | |
734 | sess->s_id.b.al_pa, sess->s_id.b.area, | |
735 | sess->loop_id, fcport->d_id.b.domain, | |
736 | fcport->d_id.b.al_pa, fcport->d_id.b.area, | |
737 | fcport->loop_id); | |
738 | ||
739 | if (sess->deleted) | |
740 | qlt_undelete_sess(sess); | |
741 | ||
742 | kref_get(&sess->se_sess->sess_kref); | |
743 | sess->s_id = fcport->d_id; | |
744 | sess->loop_id = fcport->loop_id; | |
745 | sess->conf_compl_supported = !!(fcport->flags & | |
746 | FCF_CONF_COMP_SUPPORTED); | |
747 | if (sess->local && !local) | |
748 | sess->local = 0; | |
749 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
750 | ||
751 | return sess; | |
752 | } | |
753 | } | |
754 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
755 | ||
756 | sess = kzalloc(sizeof(*sess), GFP_KERNEL); | |
757 | if (!sess) { | |
758 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a, | |
759 | "qla_target(%u): session allocation failed, " | |
760 | "all commands from port %02x:%02x:%02x:%02x:" | |
761 | "%02x:%02x:%02x:%02x will be refused", vha->vp_idx, | |
762 | fcport->port_name[0], fcport->port_name[1], | |
763 | fcport->port_name[2], fcport->port_name[3], | |
764 | fcport->port_name[4], fcport->port_name[5], | |
765 | fcport->port_name[6], fcport->port_name[7]); | |
766 | ||
767 | return NULL; | |
768 | } | |
769 | sess->tgt = ha->tgt.qla_tgt; | |
770 | sess->vha = vha; | |
771 | sess->s_id = fcport->d_id; | |
772 | sess->loop_id = fcport->loop_id; | |
773 | sess->local = local; | |
774 | ||
775 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf006, | |
776 | "Adding sess %p to tgt %p via ->check_initiator_node_acl()\n", | |
777 | sess, ha->tgt.qla_tgt); | |
778 | ||
779 | be_sid[0] = sess->s_id.b.domain; | |
780 | be_sid[1] = sess->s_id.b.area; | |
781 | be_sid[2] = sess->s_id.b.al_pa; | |
782 | /* | |
783 | * Determine if this fc_port->port_name is allowed to access | |
784 | * target mode using explict NodeACLs+MappedLUNs, or using | |
785 | * TPG demo mode. If this is successful a target mode FC nexus | |
786 | * is created. | |
787 | */ | |
788 | if (ha->tgt.tgt_ops->check_initiator_node_acl(vha, | |
789 | &fcport->port_name[0], sess, &be_sid[0], fcport->loop_id) < 0) { | |
790 | kfree(sess); | |
791 | return NULL; | |
792 | } | |
793 | /* | |
794 | * Take an extra reference to ->sess_kref here to handle qla_tgt_sess | |
795 | * access across ->hardware_lock reaquire. | |
796 | */ | |
797 | kref_get(&sess->se_sess->sess_kref); | |
798 | ||
799 | sess->conf_compl_supported = !!(fcport->flags & | |
800 | FCF_CONF_COMP_SUPPORTED); | |
801 | BUILD_BUG_ON(sizeof(sess->port_name) != sizeof(fcport->port_name)); | |
802 | memcpy(sess->port_name, fcport->port_name, sizeof(sess->port_name)); | |
803 | ||
804 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
805 | list_add_tail(&sess->sess_list_entry, &ha->tgt.qla_tgt->sess_list); | |
806 | ha->tgt.qla_tgt->sess_count++; | |
807 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
808 | ||
809 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b, | |
810 | "qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:" | |
811 | "%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed" | |
812 | " completion %ssupported) added\n", | |
813 | vha->vp_idx, local ? "local " : "", fcport->port_name[0], | |
814 | fcport->port_name[1], fcport->port_name[2], fcport->port_name[3], | |
815 | fcport->port_name[4], fcport->port_name[5], fcport->port_name[6], | |
816 | fcport->port_name[7], fcport->loop_id, sess->s_id.b.domain, | |
817 | sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ? | |
818 | "" : "not "); | |
819 | ||
820 | return sess; | |
821 | } | |
822 | ||
823 | /* | |
824 | * Called from drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port() | |
825 | */ | |
826 | void qlt_fc_port_added(struct scsi_qla_host *vha, fc_port_t *fcport) | |
827 | { | |
828 | struct qla_hw_data *ha = vha->hw; | |
829 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
830 | struct qla_tgt_sess *sess; | |
831 | unsigned long flags; | |
832 | ||
833 | if (!vha->hw->tgt.tgt_ops) | |
834 | return; | |
835 | ||
836 | if (!tgt || (fcport->port_type != FCT_INITIATOR)) | |
837 | return; | |
838 | ||
839 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
840 | if (tgt->tgt_stop) { | |
841 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
842 | return; | |
843 | } | |
844 | sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); | |
845 | if (!sess) { | |
846 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
847 | ||
848 | mutex_lock(&ha->tgt.tgt_mutex); | |
849 | sess = qlt_create_sess(vha, fcport, false); | |
850 | mutex_unlock(&ha->tgt.tgt_mutex); | |
851 | ||
852 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
853 | } else { | |
854 | kref_get(&sess->se_sess->sess_kref); | |
855 | ||
856 | if (sess->deleted) { | |
857 | qlt_undelete_sess(sess); | |
858 | ||
859 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c, | |
860 | "qla_target(%u): %ssession for port %02x:" | |
861 | "%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) " | |
862 | "reappeared\n", vha->vp_idx, sess->local ? "local " | |
863 | : "", sess->port_name[0], sess->port_name[1], | |
864 | sess->port_name[2], sess->port_name[3], | |
865 | sess->port_name[4], sess->port_name[5], | |
866 | sess->port_name[6], sess->port_name[7], | |
867 | sess->loop_id); | |
868 | ||
869 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007, | |
870 | "Reappeared sess %p\n", sess); | |
871 | } | |
872 | sess->s_id = fcport->d_id; | |
873 | sess->loop_id = fcport->loop_id; | |
874 | sess->conf_compl_supported = !!(fcport->flags & | |
875 | FCF_CONF_COMP_SUPPORTED); | |
876 | } | |
877 | ||
878 | if (sess && sess->local) { | |
879 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d, | |
880 | "qla_target(%u): local session for " | |
881 | "port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x " | |
882 | "(loop ID %d) became global\n", vha->vp_idx, | |
883 | fcport->port_name[0], fcport->port_name[1], | |
884 | fcport->port_name[2], fcport->port_name[3], | |
885 | fcport->port_name[4], fcport->port_name[5], | |
886 | fcport->port_name[6], fcport->port_name[7], | |
887 | sess->loop_id); | |
888 | sess->local = 0; | |
889 | } | |
890 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
891 | ||
892 | ha->tgt.tgt_ops->put_sess(sess); | |
893 | } | |
894 | ||
895 | void qlt_fc_port_deleted(struct scsi_qla_host *vha, fc_port_t *fcport) | |
896 | { | |
897 | struct qla_hw_data *ha = vha->hw; | |
898 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
899 | struct qla_tgt_sess *sess; | |
900 | unsigned long flags; | |
901 | ||
902 | if (!vha->hw->tgt.tgt_ops) | |
903 | return; | |
904 | ||
905 | if (!tgt || (fcport->port_type != FCT_INITIATOR)) | |
906 | return; | |
907 | ||
908 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
909 | if (tgt->tgt_stop) { | |
910 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
911 | return; | |
912 | } | |
913 | sess = qlt_find_sess_by_port_name(tgt, fcport->port_name); | |
914 | if (!sess) { | |
915 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
916 | return; | |
917 | } | |
918 | ||
919 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf008, "qla_tgt_fc_port_deleted %p", sess); | |
920 | ||
921 | sess->local = 1; | |
922 | qlt_schedule_sess_for_deletion(sess, false); | |
923 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
924 | } | |
925 | ||
926 | static inline int test_tgt_sess_count(struct qla_tgt *tgt) | |
927 | { | |
928 | struct qla_hw_data *ha = tgt->ha; | |
929 | unsigned long flags; | |
930 | int res; | |
931 | /* | |
932 | * We need to protect against race, when tgt is freed before or | |
933 | * inside wake_up() | |
934 | */ | |
935 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
936 | ql_dbg(ql_dbg_tgt, tgt->vha, 0xe002, | |
937 | "tgt %p, empty(sess_list)=%d sess_count=%d\n", | |
938 | tgt, list_empty(&tgt->sess_list), tgt->sess_count); | |
939 | res = (tgt->sess_count == 0); | |
940 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
941 | ||
942 | return res; | |
943 | } | |
944 | ||
945 | /* Called by tcm_qla2xxx configfs code */ | |
946 | void qlt_stop_phase1(struct qla_tgt *tgt) | |
947 | { | |
948 | struct scsi_qla_host *vha = tgt->vha; | |
949 | struct qla_hw_data *ha = tgt->ha; | |
950 | unsigned long flags; | |
951 | ||
952 | if (tgt->tgt_stop || tgt->tgt_stopped) { | |
953 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04e, | |
954 | "Already in tgt->tgt_stop or tgt_stopped state\n"); | |
955 | dump_stack(); | |
956 | return; | |
957 | } | |
958 | ||
959 | ql_dbg(ql_dbg_tgt, vha, 0xe003, "Stopping target for host %ld(%p)\n", | |
960 | vha->host_no, vha); | |
961 | /* | |
962 | * Mutex needed to sync with qla_tgt_fc_port_[added,deleted]. | |
963 | * Lock is needed, because we still can get an incoming packet. | |
964 | */ | |
965 | mutex_lock(&ha->tgt.tgt_mutex); | |
966 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
967 | tgt->tgt_stop = 1; | |
968 | qlt_clear_tgt_db(tgt, true); | |
969 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
970 | mutex_unlock(&ha->tgt.tgt_mutex); | |
971 | ||
972 | flush_delayed_work_sync(&tgt->sess_del_work); | |
973 | ||
974 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf009, | |
975 | "Waiting for sess works (tgt %p)", tgt); | |
976 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
977 | while (!list_empty(&tgt->sess_works_list)) { | |
978 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
979 | flush_scheduled_work(); | |
980 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
981 | } | |
982 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
983 | ||
984 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00a, | |
985 | "Waiting for tgt %p: list_empty(sess_list)=%d " | |
986 | "sess_count=%d\n", tgt, list_empty(&tgt->sess_list), | |
987 | tgt->sess_count); | |
988 | ||
989 | wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); | |
990 | ||
991 | /* Big hammer */ | |
992 | if (!ha->flags.host_shutting_down && qla_tgt_mode_enabled(vha)) | |
993 | qlt_disable_vha(vha); | |
994 | ||
995 | /* Wait for sessions to clear out (just in case) */ | |
996 | wait_event(tgt->waitQ, test_tgt_sess_count(tgt)); | |
997 | } | |
998 | EXPORT_SYMBOL(qlt_stop_phase1); | |
999 | ||
1000 | /* Called by tcm_qla2xxx configfs code */ | |
1001 | void qlt_stop_phase2(struct qla_tgt *tgt) | |
1002 | { | |
1003 | struct qla_hw_data *ha = tgt->ha; | |
1004 | unsigned long flags; | |
1005 | ||
1006 | if (tgt->tgt_stopped) { | |
1007 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf04f, | |
1008 | "Already in tgt->tgt_stopped state\n"); | |
1009 | dump_stack(); | |
1010 | return; | |
1011 | } | |
1012 | ||
1013 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00b, | |
1014 | "Waiting for %d IRQ commands to complete (tgt %p)", | |
1015 | tgt->irq_cmd_count, tgt); | |
1016 | ||
1017 | mutex_lock(&ha->tgt.tgt_mutex); | |
1018 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1019 | while (tgt->irq_cmd_count != 0) { | |
1020 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1021 | udelay(2); | |
1022 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1023 | } | |
1024 | tgt->tgt_stop = 0; | |
1025 | tgt->tgt_stopped = 1; | |
1026 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1027 | mutex_unlock(&ha->tgt.tgt_mutex); | |
1028 | ||
1029 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00c, "Stop of tgt %p finished", | |
1030 | tgt); | |
1031 | } | |
1032 | EXPORT_SYMBOL(qlt_stop_phase2); | |
1033 | ||
1034 | /* Called from qlt_remove_target() -> qla2x00_remove_one() */ | |
1035 | void qlt_release(struct qla_tgt *tgt) | |
1036 | { | |
1037 | struct qla_hw_data *ha = tgt->ha; | |
1038 | ||
1039 | if ((ha->tgt.qla_tgt != NULL) && !tgt->tgt_stopped) | |
1040 | qlt_stop_phase2(tgt); | |
1041 | ||
1042 | ha->tgt.qla_tgt = NULL; | |
1043 | ||
1044 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00d, | |
1045 | "Release of tgt %p finished\n", tgt); | |
1046 | ||
1047 | kfree(tgt); | |
1048 | } | |
1049 | ||
1050 | /* ha->hardware_lock supposed to be held on entry */ | |
1051 | static int qlt_sched_sess_work(struct qla_tgt *tgt, int type, | |
1052 | const void *param, unsigned int param_size) | |
1053 | { | |
1054 | struct qla_tgt_sess_work_param *prm; | |
1055 | unsigned long flags; | |
1056 | ||
1057 | prm = kzalloc(sizeof(*prm), GFP_ATOMIC); | |
1058 | if (!prm) { | |
1059 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf050, | |
1060 | "qla_target(%d): Unable to create session " | |
1061 | "work, command will be refused", 0); | |
1062 | return -ENOMEM; | |
1063 | } | |
1064 | ||
1065 | ql_dbg(ql_dbg_tgt_mgt, tgt->vha, 0xf00e, | |
1066 | "Scheduling work (type %d, prm %p)" | |
1067 | " to find session for param %p (size %d, tgt %p)\n", | |
1068 | type, prm, param, param_size, tgt); | |
1069 | ||
1070 | prm->type = type; | |
1071 | memcpy(&prm->tm_iocb, param, param_size); | |
1072 | ||
1073 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
1074 | list_add_tail(&prm->sess_works_list_entry, &tgt->sess_works_list); | |
1075 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
1076 | ||
1077 | schedule_work(&tgt->sess_work); | |
1078 | ||
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | /* | |
1083 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1084 | */ | |
1085 | static void qlt_send_notify_ack(struct scsi_qla_host *vha, | |
1086 | struct imm_ntfy_from_isp *ntfy, | |
1087 | uint32_t add_flags, uint16_t resp_code, int resp_code_valid, | |
1088 | uint16_t srr_flags, uint16_t srr_reject_code, uint8_t srr_explan) | |
1089 | { | |
1090 | struct qla_hw_data *ha = vha->hw; | |
1091 | request_t *pkt; | |
1092 | struct nack_to_isp *nack; | |
1093 | ||
1094 | ql_dbg(ql_dbg_tgt, vha, 0xe004, "Sending NOTIFY_ACK (ha=%p)\n", ha); | |
1095 | ||
1096 | /* Send marker if required */ | |
1097 | if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) | |
1098 | return; | |
1099 | ||
1100 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); | |
1101 | if (!pkt) { | |
1102 | ql_dbg(ql_dbg_tgt, vha, 0xe049, | |
1103 | "qla_target(%d): %s failed: unable to allocate " | |
1104 | "request packet\n", vha->vp_idx, __func__); | |
1105 | return; | |
1106 | } | |
1107 | ||
1108 | if (ha->tgt.qla_tgt != NULL) | |
1109 | ha->tgt.qla_tgt->notify_ack_expected++; | |
1110 | ||
1111 | pkt->entry_type = NOTIFY_ACK_TYPE; | |
1112 | pkt->entry_count = 1; | |
1113 | ||
1114 | nack = (struct nack_to_isp *)pkt; | |
1115 | nack->ox_id = ntfy->ox_id; | |
1116 | ||
1117 | nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle; | |
1118 | if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) { | |
1119 | nack->u.isp24.flags = ntfy->u.isp24.flags & | |
1120 | __constant_cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB); | |
1121 | } | |
1122 | nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id; | |
1123 | nack->u.isp24.status = ntfy->u.isp24.status; | |
1124 | nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode; | |
1125 | nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address; | |
1126 | nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs; | |
1127 | nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui; | |
1128 | nack->u.isp24.srr_flags = cpu_to_le16(srr_flags); | |
1129 | nack->u.isp24.srr_reject_code = srr_reject_code; | |
1130 | nack->u.isp24.srr_reject_code_expl = srr_explan; | |
1131 | nack->u.isp24.vp_index = ntfy->u.isp24.vp_index; | |
1132 | ||
1133 | ql_dbg(ql_dbg_tgt, vha, 0xe005, | |
1134 | "qla_target(%d): Sending 24xx Notify Ack %d\n", | |
1135 | vha->vp_idx, nack->u.isp24.status); | |
1136 | ||
1137 | qla2x00_start_iocbs(vha, vha->req); | |
1138 | } | |
1139 | ||
1140 | /* | |
1141 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1142 | */ | |
1143 | static void qlt_24xx_send_abts_resp(struct scsi_qla_host *vha, | |
1144 | struct abts_recv_from_24xx *abts, uint32_t status, | |
1145 | bool ids_reversed) | |
1146 | { | |
1147 | struct qla_hw_data *ha = vha->hw; | |
1148 | struct abts_resp_to_24xx *resp; | |
1149 | uint32_t f_ctl; | |
1150 | uint8_t *p; | |
1151 | ||
1152 | ql_dbg(ql_dbg_tgt, vha, 0xe006, | |
1153 | "Sending task mgmt ABTS response (ha=%p, atio=%p, status=%x\n", | |
1154 | ha, abts, status); | |
1155 | ||
1156 | /* Send marker if required */ | |
1157 | if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) | |
1158 | return; | |
1159 | ||
1160 | resp = (struct abts_resp_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); | |
1161 | if (!resp) { | |
1162 | ql_dbg(ql_dbg_tgt, vha, 0xe04a, | |
1163 | "qla_target(%d): %s failed: unable to allocate " | |
1164 | "request packet", vha->vp_idx, __func__); | |
1165 | return; | |
1166 | } | |
1167 | ||
1168 | resp->entry_type = ABTS_RESP_24XX; | |
1169 | resp->entry_count = 1; | |
1170 | resp->nport_handle = abts->nport_handle; | |
1171 | resp->vp_index = vha->vp_idx; | |
1172 | resp->sof_type = abts->sof_type; | |
1173 | resp->exchange_address = abts->exchange_address; | |
1174 | resp->fcp_hdr_le = abts->fcp_hdr_le; | |
1175 | f_ctl = __constant_cpu_to_le32(F_CTL_EXCH_CONTEXT_RESP | | |
1176 | F_CTL_LAST_SEQ | F_CTL_END_SEQ | | |
1177 | F_CTL_SEQ_INITIATIVE); | |
1178 | p = (uint8_t *)&f_ctl; | |
1179 | resp->fcp_hdr_le.f_ctl[0] = *p++; | |
1180 | resp->fcp_hdr_le.f_ctl[1] = *p++; | |
1181 | resp->fcp_hdr_le.f_ctl[2] = *p; | |
1182 | if (ids_reversed) { | |
1183 | resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.d_id[0]; | |
1184 | resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.d_id[1]; | |
1185 | resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.d_id[2]; | |
1186 | resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.s_id[0]; | |
1187 | resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.s_id[1]; | |
1188 | resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.s_id[2]; | |
1189 | } else { | |
1190 | resp->fcp_hdr_le.d_id[0] = abts->fcp_hdr_le.s_id[0]; | |
1191 | resp->fcp_hdr_le.d_id[1] = abts->fcp_hdr_le.s_id[1]; | |
1192 | resp->fcp_hdr_le.d_id[2] = abts->fcp_hdr_le.s_id[2]; | |
1193 | resp->fcp_hdr_le.s_id[0] = abts->fcp_hdr_le.d_id[0]; | |
1194 | resp->fcp_hdr_le.s_id[1] = abts->fcp_hdr_le.d_id[1]; | |
1195 | resp->fcp_hdr_le.s_id[2] = abts->fcp_hdr_le.d_id[2]; | |
1196 | } | |
1197 | resp->exchange_addr_to_abort = abts->exchange_addr_to_abort; | |
1198 | if (status == FCP_TMF_CMPL) { | |
1199 | resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_ACC; | |
1200 | resp->payload.ba_acct.seq_id_valid = SEQ_ID_INVALID; | |
1201 | resp->payload.ba_acct.low_seq_cnt = 0x0000; | |
1202 | resp->payload.ba_acct.high_seq_cnt = 0xFFFF; | |
1203 | resp->payload.ba_acct.ox_id = abts->fcp_hdr_le.ox_id; | |
1204 | resp->payload.ba_acct.rx_id = abts->fcp_hdr_le.rx_id; | |
1205 | } else { | |
1206 | resp->fcp_hdr_le.r_ctl = R_CTL_BASIC_LINK_SERV | R_CTL_B_RJT; | |
1207 | resp->payload.ba_rjt.reason_code = | |
1208 | BA_RJT_REASON_CODE_UNABLE_TO_PERFORM; | |
1209 | /* Other bytes are zero */ | |
1210 | } | |
1211 | ||
1212 | ha->tgt.qla_tgt->abts_resp_expected++; | |
1213 | ||
1214 | qla2x00_start_iocbs(vha, vha->req); | |
1215 | } | |
1216 | ||
1217 | /* | |
1218 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1219 | */ | |
1220 | static void qlt_24xx_retry_term_exchange(struct scsi_qla_host *vha, | |
1221 | struct abts_resp_from_24xx_fw *entry) | |
1222 | { | |
1223 | struct ctio7_to_24xx *ctio; | |
1224 | ||
1225 | ql_dbg(ql_dbg_tgt, vha, 0xe007, | |
1226 | "Sending retry TERM EXCH CTIO7 (ha=%p)\n", vha->hw); | |
1227 | /* Send marker if required */ | |
1228 | if (qlt_issue_marker(vha, 1) != QLA_SUCCESS) | |
1229 | return; | |
1230 | ||
1231 | ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(vha, NULL); | |
1232 | if (ctio == NULL) { | |
1233 | ql_dbg(ql_dbg_tgt, vha, 0xe04b, | |
1234 | "qla_target(%d): %s failed: unable to allocate " | |
1235 | "request packet\n", vha->vp_idx, __func__); | |
1236 | return; | |
1237 | } | |
1238 | ||
1239 | /* | |
1240 | * We've got on entrance firmware's response on by us generated | |
1241 | * ABTS response. So, in it ID fields are reversed. | |
1242 | */ | |
1243 | ||
1244 | ctio->entry_type = CTIO_TYPE7; | |
1245 | ctio->entry_count = 1; | |
1246 | ctio->nport_handle = entry->nport_handle; | |
1247 | ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
1248 | ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); | |
1249 | ctio->vp_index = vha->vp_idx; | |
1250 | ctio->initiator_id[0] = entry->fcp_hdr_le.d_id[0]; | |
1251 | ctio->initiator_id[1] = entry->fcp_hdr_le.d_id[1]; | |
1252 | ctio->initiator_id[2] = entry->fcp_hdr_le.d_id[2]; | |
1253 | ctio->exchange_addr = entry->exchange_addr_to_abort; | |
1254 | ctio->u.status1.flags = | |
1255 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | | |
1256 | CTIO7_FLAGS_TERMINATE); | |
1257 | ctio->u.status1.ox_id = entry->fcp_hdr_le.ox_id; | |
1258 | ||
1259 | qla2x00_start_iocbs(vha, vha->req); | |
1260 | ||
1261 | qlt_24xx_send_abts_resp(vha, (struct abts_recv_from_24xx *)entry, | |
1262 | FCP_TMF_CMPL, true); | |
1263 | } | |
1264 | ||
1265 | /* ha->hardware_lock supposed to be held on entry */ | |
1266 | static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha, | |
1267 | struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess) | |
1268 | { | |
1269 | struct qla_hw_data *ha = vha->hw; | |
1270 | struct qla_tgt_mgmt_cmd *mcmd; | |
1271 | int rc; | |
1272 | ||
1273 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f, | |
1274 | "qla_target(%d): task abort (tag=%d)\n", | |
1275 | vha->vp_idx, abts->exchange_addr_to_abort); | |
1276 | ||
1277 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); | |
1278 | if (mcmd == NULL) { | |
1279 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf051, | |
1280 | "qla_target(%d): %s: Allocation of ABORT cmd failed", | |
1281 | vha->vp_idx, __func__); | |
1282 | return -ENOMEM; | |
1283 | } | |
1284 | memset(mcmd, 0, sizeof(*mcmd)); | |
1285 | ||
1286 | mcmd->sess = sess; | |
1287 | memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts)); | |
1288 | ||
1289 | rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, TMR_ABORT_TASK, | |
1290 | abts->exchange_addr_to_abort); | |
1291 | if (rc != 0) { | |
1292 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052, | |
1293 | "qla_target(%d): tgt_ops->handle_tmr()" | |
1294 | " failed: %d", vha->vp_idx, rc); | |
1295 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
1296 | return -EFAULT; | |
1297 | } | |
1298 | ||
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | /* | |
1303 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1304 | */ | |
1305 | static void qlt_24xx_handle_abts(struct scsi_qla_host *vha, | |
1306 | struct abts_recv_from_24xx *abts) | |
1307 | { | |
1308 | struct qla_hw_data *ha = vha->hw; | |
1309 | struct qla_tgt_sess *sess; | |
1310 | uint32_t tag = abts->exchange_addr_to_abort; | |
1311 | uint8_t s_id[3]; | |
1312 | int rc; | |
1313 | ||
1314 | if (le32_to_cpu(abts->fcp_hdr_le.parameter) & ABTS_PARAM_ABORT_SEQ) { | |
1315 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf053, | |
1316 | "qla_target(%d): ABTS: Abort Sequence not " | |
1317 | "supported\n", vha->vp_idx); | |
1318 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); | |
1319 | return; | |
1320 | } | |
1321 | ||
1322 | if (tag == ATIO_EXCHANGE_ADDRESS_UNKNOWN) { | |
1323 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf010, | |
1324 | "qla_target(%d): ABTS: Unknown Exchange " | |
1325 | "Address received\n", vha->vp_idx); | |
1326 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); | |
1327 | return; | |
1328 | } | |
1329 | ||
1330 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf011, | |
1331 | "qla_target(%d): task abort (s_id=%x:%x:%x, " | |
1332 | "tag=%d, param=%x)\n", vha->vp_idx, abts->fcp_hdr_le.s_id[2], | |
1333 | abts->fcp_hdr_le.s_id[1], abts->fcp_hdr_le.s_id[0], tag, | |
1334 | le32_to_cpu(abts->fcp_hdr_le.parameter)); | |
1335 | ||
1336 | s_id[0] = abts->fcp_hdr_le.s_id[2]; | |
1337 | s_id[1] = abts->fcp_hdr_le.s_id[1]; | |
1338 | s_id[2] = abts->fcp_hdr_le.s_id[0]; | |
1339 | ||
1340 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); | |
1341 | if (!sess) { | |
1342 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf012, | |
1343 | "qla_target(%d): task abort for non-existant session\n", | |
1344 | vha->vp_idx); | |
1345 | rc = qlt_sched_sess_work(ha->tgt.qla_tgt, | |
1346 | QLA_TGT_SESS_WORK_ABORT, abts, sizeof(*abts)); | |
1347 | if (rc != 0) { | |
1348 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, | |
1349 | false); | |
1350 | } | |
1351 | return; | |
1352 | } | |
1353 | ||
1354 | rc = __qlt_24xx_handle_abts(vha, abts, sess); | |
1355 | if (rc != 0) { | |
1356 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf054, | |
1357 | "qla_target(%d): __qlt_24xx_handle_abts() failed: %d\n", | |
1358 | vha->vp_idx, rc); | |
1359 | qlt_24xx_send_abts_resp(vha, abts, FCP_TMF_REJECTED, false); | |
1360 | return; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | /* | |
1365 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1366 | */ | |
1367 | static void qlt_24xx_send_task_mgmt_ctio(struct scsi_qla_host *ha, | |
1368 | struct qla_tgt_mgmt_cmd *mcmd, uint32_t resp_code) | |
1369 | { | |
1370 | struct atio_from_isp *atio = &mcmd->orig_iocb.atio; | |
1371 | struct ctio7_to_24xx *ctio; | |
1372 | ||
1373 | ql_dbg(ql_dbg_tgt, ha, 0xe008, | |
1374 | "Sending task mgmt CTIO7 (ha=%p, atio=%p, resp_code=%x\n", | |
1375 | ha, atio, resp_code); | |
1376 | ||
1377 | /* Send marker if required */ | |
1378 | if (qlt_issue_marker(ha, 1) != QLA_SUCCESS) | |
1379 | return; | |
1380 | ||
1381 | ctio = (struct ctio7_to_24xx *)qla2x00_alloc_iocbs(ha, NULL); | |
1382 | if (ctio == NULL) { | |
1383 | ql_dbg(ql_dbg_tgt, ha, 0xe04c, | |
1384 | "qla_target(%d): %s failed: unable to allocate " | |
1385 | "request packet\n", ha->vp_idx, __func__); | |
1386 | return; | |
1387 | } | |
1388 | ||
1389 | ctio->entry_type = CTIO_TYPE7; | |
1390 | ctio->entry_count = 1; | |
1391 | ctio->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
1392 | ctio->nport_handle = mcmd->sess->loop_id; | |
1393 | ctio->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); | |
1394 | ctio->vp_index = ha->vp_idx; | |
1395 | ctio->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
1396 | ctio->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
1397 | ctio->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
1398 | ctio->exchange_addr = atio->u.isp24.exchange_addr; | |
1399 | ctio->u.status1.flags = (atio->u.isp24.attr << 9) | | |
1400 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | | |
1401 | CTIO7_FLAGS_SEND_STATUS); | |
1402 | ctio->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); | |
1403 | ctio->u.status1.scsi_status = | |
1404 | __constant_cpu_to_le16(SS_RESPONSE_INFO_LEN_VALID); | |
1405 | ctio->u.status1.response_len = __constant_cpu_to_le16(8); | |
1406 | ((uint32_t *)ctio->u.status1.sense_data)[0] = cpu_to_be32(resp_code); | |
1407 | ||
1408 | qla2x00_start_iocbs(ha, ha->req); | |
1409 | } | |
1410 | ||
1411 | void qlt_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) | |
1412 | { | |
1413 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
1414 | } | |
1415 | EXPORT_SYMBOL(qlt_free_mcmd); | |
1416 | ||
1417 | /* callback from target fabric module code */ | |
1418 | void qlt_xmit_tm_rsp(struct qla_tgt_mgmt_cmd *mcmd) | |
1419 | { | |
1420 | struct scsi_qla_host *vha = mcmd->sess->vha; | |
1421 | struct qla_hw_data *ha = vha->hw; | |
1422 | unsigned long flags; | |
1423 | ||
1424 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf013, | |
1425 | "TM response mcmd (%p) status %#x state %#x", | |
1426 | mcmd, mcmd->fc_tm_rsp, mcmd->flags); | |
1427 | ||
1428 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
1429 | if (mcmd->flags == QLA24XX_MGMT_SEND_NACK) | |
1430 | qlt_send_notify_ack(vha, &mcmd->orig_iocb.imm_ntfy, | |
1431 | 0, 0, 0, 0, 0, 0); | |
1432 | else { | |
1433 | if (mcmd->se_cmd.se_tmr_req->function == TMR_ABORT_TASK) | |
1434 | qlt_24xx_send_abts_resp(vha, &mcmd->orig_iocb.abts, | |
1435 | mcmd->fc_tm_rsp, false); | |
1436 | else | |
1437 | qlt_24xx_send_task_mgmt_ctio(vha, mcmd, | |
1438 | mcmd->fc_tm_rsp); | |
1439 | } | |
1440 | /* | |
1441 | * Make the callback for ->free_mcmd() to queue_work() and invoke | |
1442 | * target_put_sess_cmd() to drop cmd_kref to 1. The final | |
1443 | * target_put_sess_cmd() call will be made from TFO->check_stop_free() | |
1444 | * -> tcm_qla2xxx_check_stop_free() to release the TMR associated se_cmd | |
1445 | * descriptor after TFO->queue_tm_rsp() -> tcm_qla2xxx_queue_tm_rsp() -> | |
1446 | * qlt_xmit_tm_rsp() returns here.. | |
1447 | */ | |
1448 | ha->tgt.tgt_ops->free_mcmd(mcmd); | |
1449 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
1450 | } | |
1451 | EXPORT_SYMBOL(qlt_xmit_tm_rsp); | |
1452 | ||
1453 | /* No locks */ | |
1454 | static int qlt_pci_map_calc_cnt(struct qla_tgt_prm *prm) | |
1455 | { | |
1456 | struct qla_tgt_cmd *cmd = prm->cmd; | |
1457 | ||
1458 | BUG_ON(cmd->sg_cnt == 0); | |
1459 | ||
1460 | prm->sg = (struct scatterlist *)cmd->sg; | |
1461 | prm->seg_cnt = pci_map_sg(prm->tgt->ha->pdev, cmd->sg, | |
1462 | cmd->sg_cnt, cmd->dma_data_direction); | |
1463 | if (unlikely(prm->seg_cnt == 0)) | |
1464 | goto out_err; | |
1465 | ||
1466 | prm->cmd->sg_mapped = 1; | |
1467 | ||
1468 | /* | |
1469 | * If greater than four sg entries then we need to allocate | |
1470 | * the continuation entries | |
1471 | */ | |
1472 | if (prm->seg_cnt > prm->tgt->datasegs_per_cmd) | |
1473 | prm->req_cnt += DIV_ROUND_UP(prm->seg_cnt - | |
1474 | prm->tgt->datasegs_per_cmd, prm->tgt->datasegs_per_cont); | |
1475 | ||
1476 | ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe009, "seg_cnt=%d, req_cnt=%d\n", | |
1477 | prm->seg_cnt, prm->req_cnt); | |
1478 | return 0; | |
1479 | ||
1480 | out_err: | |
1481 | ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe04d, | |
1482 | "qla_target(%d): PCI mapping failed: sg_cnt=%d", | |
1483 | 0, prm->cmd->sg_cnt); | |
1484 | return -1; | |
1485 | } | |
1486 | ||
1487 | static inline void qlt_unmap_sg(struct scsi_qla_host *vha, | |
1488 | struct qla_tgt_cmd *cmd) | |
1489 | { | |
1490 | struct qla_hw_data *ha = vha->hw; | |
1491 | ||
1492 | BUG_ON(!cmd->sg_mapped); | |
1493 | pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); | |
1494 | cmd->sg_mapped = 0; | |
1495 | } | |
1496 | ||
1497 | static int qlt_check_reserve_free_req(struct scsi_qla_host *vha, | |
1498 | uint32_t req_cnt) | |
1499 | { | |
1500 | struct qla_hw_data *ha = vha->hw; | |
1501 | device_reg_t __iomem *reg = ha->iobase; | |
1502 | uint32_t cnt; | |
1503 | ||
1504 | if (vha->req->cnt < (req_cnt + 2)) { | |
1505 | cnt = (uint16_t)RD_REG_DWORD(®->isp24.req_q_out); | |
1506 | ||
1507 | ql_dbg(ql_dbg_tgt, vha, 0xe00a, | |
1508 | "Request ring circled: cnt=%d, vha->->ring_index=%d, " | |
1509 | "vha->req->cnt=%d, req_cnt=%d\n", cnt, | |
1510 | vha->req->ring_index, vha->req->cnt, req_cnt); | |
1511 | if (vha->req->ring_index < cnt) | |
1512 | vha->req->cnt = cnt - vha->req->ring_index; | |
1513 | else | |
1514 | vha->req->cnt = vha->req->length - | |
1515 | (vha->req->ring_index - cnt); | |
1516 | } | |
1517 | ||
1518 | if (unlikely(vha->req->cnt < (req_cnt + 2))) { | |
1519 | ql_dbg(ql_dbg_tgt, vha, 0xe00b, | |
1520 | "qla_target(%d): There is no room in the " | |
1521 | "request ring: vha->req->ring_index=%d, vha->req->cnt=%d, " | |
1522 | "req_cnt=%d\n", vha->vp_idx, vha->req->ring_index, | |
1523 | vha->req->cnt, req_cnt); | |
1524 | return -EAGAIN; | |
1525 | } | |
1526 | vha->req->cnt -= req_cnt; | |
1527 | ||
1528 | return 0; | |
1529 | } | |
1530 | ||
1531 | /* | |
1532 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
1533 | */ | |
1534 | static inline void *qlt_get_req_pkt(struct scsi_qla_host *vha) | |
1535 | { | |
1536 | /* Adjust ring index. */ | |
1537 | vha->req->ring_index++; | |
1538 | if (vha->req->ring_index == vha->req->length) { | |
1539 | vha->req->ring_index = 0; | |
1540 | vha->req->ring_ptr = vha->req->ring; | |
1541 | } else { | |
1542 | vha->req->ring_ptr++; | |
1543 | } | |
1544 | return (cont_entry_t *)vha->req->ring_ptr; | |
1545 | } | |
1546 | ||
1547 | /* ha->hardware_lock supposed to be held on entry */ | |
1548 | static inline uint32_t qlt_make_handle(struct scsi_qla_host *vha) | |
1549 | { | |
1550 | struct qla_hw_data *ha = vha->hw; | |
1551 | uint32_t h; | |
1552 | ||
1553 | h = ha->tgt.current_handle; | |
1554 | /* always increment cmd handle */ | |
1555 | do { | |
1556 | ++h; | |
1557 | if (h > MAX_OUTSTANDING_COMMANDS) | |
1558 | h = 1; /* 0 is QLA_TGT_NULL_HANDLE */ | |
1559 | if (h == ha->tgt.current_handle) { | |
1560 | ql_dbg(ql_dbg_tgt, vha, 0xe04e, | |
1561 | "qla_target(%d): Ran out of " | |
1562 | "empty cmd slots in ha %p\n", vha->vp_idx, ha); | |
1563 | h = QLA_TGT_NULL_HANDLE; | |
1564 | break; | |
1565 | } | |
1566 | } while ((h == QLA_TGT_NULL_HANDLE) || | |
1567 | (h == QLA_TGT_SKIP_HANDLE) || | |
1568 | (ha->tgt.cmds[h-1] != NULL)); | |
1569 | ||
1570 | if (h != QLA_TGT_NULL_HANDLE) | |
1571 | ha->tgt.current_handle = h; | |
1572 | ||
1573 | return h; | |
1574 | } | |
1575 | ||
1576 | /* ha->hardware_lock supposed to be held on entry */ | |
1577 | static int qlt_24xx_build_ctio_pkt(struct qla_tgt_prm *prm, | |
1578 | struct scsi_qla_host *vha) | |
1579 | { | |
1580 | uint32_t h; | |
1581 | struct ctio7_to_24xx *pkt; | |
1582 | struct qla_hw_data *ha = vha->hw; | |
1583 | struct atio_from_isp *atio = &prm->cmd->atio; | |
1584 | ||
1585 | pkt = (struct ctio7_to_24xx *)vha->req->ring_ptr; | |
1586 | prm->pkt = pkt; | |
1587 | memset(pkt, 0, sizeof(*pkt)); | |
1588 | ||
1589 | pkt->entry_type = CTIO_TYPE7; | |
1590 | pkt->entry_count = (uint8_t)prm->req_cnt; | |
1591 | pkt->vp_index = vha->vp_idx; | |
1592 | ||
1593 | h = qlt_make_handle(vha); | |
1594 | if (unlikely(h == QLA_TGT_NULL_HANDLE)) { | |
1595 | /* | |
1596 | * CTIO type 7 from the firmware doesn't provide a way to | |
1597 | * know the initiator's LOOP ID, hence we can't find | |
1598 | * the session and, so, the command. | |
1599 | */ | |
1600 | return -EAGAIN; | |
1601 | } else | |
1602 | ha->tgt.cmds[h-1] = prm->cmd; | |
1603 | ||
1604 | pkt->handle = h | CTIO_COMPLETION_HANDLE_MARK; | |
1605 | pkt->nport_handle = prm->cmd->loop_id; | |
1606 | pkt->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); | |
1607 | pkt->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
1608 | pkt->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
1609 | pkt->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
1610 | pkt->exchange_addr = atio->u.isp24.exchange_addr; | |
1611 | pkt->u.status0.flags |= (atio->u.isp24.attr << 9); | |
1612 | pkt->u.status0.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); | |
1613 | pkt->u.status0.relative_offset = cpu_to_le32(prm->cmd->offset); | |
1614 | ||
1615 | ql_dbg(ql_dbg_tgt, vha, 0xe00c, | |
1616 | "qla_target(%d): handle(cmd) -> %08x, timeout %d, ox_id %#x\n", | |
1617 | vha->vp_idx, pkt->handle, QLA_TGT_TIMEOUT, | |
1618 | le16_to_cpu(pkt->u.status0.ox_id)); | |
1619 | return 0; | |
1620 | } | |
1621 | ||
1622 | /* | |
1623 | * ha->hardware_lock supposed to be held on entry. We have already made sure | |
1624 | * that there is sufficient amount of request entries to not drop it. | |
1625 | */ | |
1626 | static void qlt_load_cont_data_segments(struct qla_tgt_prm *prm, | |
1627 | struct scsi_qla_host *vha) | |
1628 | { | |
1629 | int cnt; | |
1630 | uint32_t *dword_ptr; | |
1631 | int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; | |
1632 | ||
1633 | /* Build continuation packets */ | |
1634 | while (prm->seg_cnt > 0) { | |
1635 | cont_a64_entry_t *cont_pkt64 = | |
1636 | (cont_a64_entry_t *)qlt_get_req_pkt(vha); | |
1637 | ||
1638 | /* | |
1639 | * Make sure that from cont_pkt64 none of | |
1640 | * 64-bit specific fields used for 32-bit | |
1641 | * addressing. Cast to (cont_entry_t *) for | |
1642 | * that. | |
1643 | */ | |
1644 | ||
1645 | memset(cont_pkt64, 0, sizeof(*cont_pkt64)); | |
1646 | ||
1647 | cont_pkt64->entry_count = 1; | |
1648 | cont_pkt64->sys_define = 0; | |
1649 | ||
1650 | if (enable_64bit_addressing) { | |
1651 | cont_pkt64->entry_type = CONTINUE_A64_TYPE; | |
1652 | dword_ptr = | |
1653 | (uint32_t *)&cont_pkt64->dseg_0_address; | |
1654 | } else { | |
1655 | cont_pkt64->entry_type = CONTINUE_TYPE; | |
1656 | dword_ptr = | |
1657 | (uint32_t *)&((cont_entry_t *) | |
1658 | cont_pkt64)->dseg_0_address; | |
1659 | } | |
1660 | ||
1661 | /* Load continuation entry data segments */ | |
1662 | for (cnt = 0; | |
1663 | cnt < prm->tgt->datasegs_per_cont && prm->seg_cnt; | |
1664 | cnt++, prm->seg_cnt--) { | |
1665 | *dword_ptr++ = | |
1666 | cpu_to_le32(pci_dma_lo32 | |
1667 | (sg_dma_address(prm->sg))); | |
1668 | if (enable_64bit_addressing) { | |
1669 | *dword_ptr++ = | |
1670 | cpu_to_le32(pci_dma_hi32 | |
1671 | (sg_dma_address | |
1672 | (prm->sg))); | |
1673 | } | |
1674 | *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); | |
1675 | ||
1676 | ql_dbg(ql_dbg_tgt, vha, 0xe00d, | |
1677 | "S/G Segment Cont. phys_addr=%llx:%llx, len=%d\n", | |
1678 | (long long unsigned int) | |
1679 | pci_dma_hi32(sg_dma_address(prm->sg)), | |
1680 | (long long unsigned int) | |
1681 | pci_dma_lo32(sg_dma_address(prm->sg)), | |
1682 | (int)sg_dma_len(prm->sg)); | |
1683 | ||
1684 | prm->sg = sg_next(prm->sg); | |
1685 | } | |
1686 | } | |
1687 | } | |
1688 | ||
1689 | /* | |
1690 | * ha->hardware_lock supposed to be held on entry. We have already made sure | |
1691 | * that there is sufficient amount of request entries to not drop it. | |
1692 | */ | |
1693 | static void qlt_load_data_segments(struct qla_tgt_prm *prm, | |
1694 | struct scsi_qla_host *vha) | |
1695 | { | |
1696 | int cnt; | |
1697 | uint32_t *dword_ptr; | |
1698 | int enable_64bit_addressing = prm->tgt->tgt_enable_64bit_addr; | |
1699 | struct ctio7_to_24xx *pkt24 = (struct ctio7_to_24xx *)prm->pkt; | |
1700 | ||
1701 | ql_dbg(ql_dbg_tgt, vha, 0xe00e, | |
1702 | "iocb->scsi_status=%x, iocb->flags=%x\n", | |
1703 | le16_to_cpu(pkt24->u.status0.scsi_status), | |
1704 | le16_to_cpu(pkt24->u.status0.flags)); | |
1705 | ||
1706 | pkt24->u.status0.transfer_length = cpu_to_le32(prm->cmd->bufflen); | |
1707 | ||
1708 | /* Setup packet address segment pointer */ | |
1709 | dword_ptr = pkt24->u.status0.dseg_0_address; | |
1710 | ||
1711 | /* Set total data segment count */ | |
1712 | if (prm->seg_cnt) | |
1713 | pkt24->dseg_count = cpu_to_le16(prm->seg_cnt); | |
1714 | ||
1715 | if (prm->seg_cnt == 0) { | |
1716 | /* No data transfer */ | |
1717 | *dword_ptr++ = 0; | |
1718 | *dword_ptr = 0; | |
1719 | return; | |
1720 | } | |
1721 | ||
1722 | /* If scatter gather */ | |
1723 | ql_dbg(ql_dbg_tgt, vha, 0xe00f, "%s", "Building S/G data segments..."); | |
1724 | ||
1725 | /* Load command entry data segments */ | |
1726 | for (cnt = 0; | |
1727 | (cnt < prm->tgt->datasegs_per_cmd) && prm->seg_cnt; | |
1728 | cnt++, prm->seg_cnt--) { | |
1729 | *dword_ptr++ = | |
1730 | cpu_to_le32(pci_dma_lo32(sg_dma_address(prm->sg))); | |
1731 | if (enable_64bit_addressing) { | |
1732 | *dword_ptr++ = | |
1733 | cpu_to_le32(pci_dma_hi32( | |
1734 | sg_dma_address(prm->sg))); | |
1735 | } | |
1736 | *dword_ptr++ = cpu_to_le32(sg_dma_len(prm->sg)); | |
1737 | ||
1738 | ql_dbg(ql_dbg_tgt, vha, 0xe010, | |
1739 | "S/G Segment phys_addr=%llx:%llx, len=%d\n", | |
1740 | (long long unsigned int)pci_dma_hi32(sg_dma_address( | |
1741 | prm->sg)), | |
1742 | (long long unsigned int)pci_dma_lo32(sg_dma_address( | |
1743 | prm->sg)), | |
1744 | (int)sg_dma_len(prm->sg)); | |
1745 | ||
1746 | prm->sg = sg_next(prm->sg); | |
1747 | } | |
1748 | ||
1749 | qlt_load_cont_data_segments(prm, vha); | |
1750 | } | |
1751 | ||
1752 | static inline int qlt_has_data(struct qla_tgt_cmd *cmd) | |
1753 | { | |
1754 | return cmd->bufflen > 0; | |
1755 | } | |
1756 | ||
1757 | /* | |
1758 | * Called without ha->hardware_lock held | |
1759 | */ | |
1760 | static int qlt_pre_xmit_response(struct qla_tgt_cmd *cmd, | |
1761 | struct qla_tgt_prm *prm, int xmit_type, uint8_t scsi_status, | |
1762 | uint32_t *full_req_cnt) | |
1763 | { | |
1764 | struct qla_tgt *tgt = cmd->tgt; | |
1765 | struct scsi_qla_host *vha = tgt->vha; | |
1766 | struct qla_hw_data *ha = vha->hw; | |
1767 | struct se_cmd *se_cmd = &cmd->se_cmd; | |
1768 | ||
1769 | if (unlikely(cmd->aborted)) { | |
1770 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf014, | |
1771 | "qla_target(%d): terminating exchange " | |
1772 | "for aborted cmd=%p (se_cmd=%p, tag=%d)", vha->vp_idx, cmd, | |
1773 | se_cmd, cmd->tag); | |
1774 | ||
1775 | cmd->state = QLA_TGT_STATE_ABORTED; | |
1776 | ||
1777 | qlt_send_term_exchange(vha, cmd, &cmd->atio, 0); | |
1778 | ||
1779 | /* !! At this point cmd could be already freed !! */ | |
1780 | return QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED; | |
1781 | } | |
1782 | ||
1783 | ql_dbg(ql_dbg_tgt, vha, 0xe011, "qla_target(%d): tag=%u\n", | |
1784 | vha->vp_idx, cmd->tag); | |
1785 | ||
1786 | prm->cmd = cmd; | |
1787 | prm->tgt = tgt; | |
1788 | prm->rq_result = scsi_status; | |
1789 | prm->sense_buffer = &cmd->sense_buffer[0]; | |
1790 | prm->sense_buffer_len = TRANSPORT_SENSE_BUFFER; | |
1791 | prm->sg = NULL; | |
1792 | prm->seg_cnt = -1; | |
1793 | prm->req_cnt = 1; | |
1794 | prm->add_status_pkt = 0; | |
1795 | ||
1796 | ql_dbg(ql_dbg_tgt, vha, 0xe012, "rq_result=%x, xmit_type=%x\n", | |
1797 | prm->rq_result, xmit_type); | |
1798 | ||
1799 | /* Send marker if required */ | |
1800 | if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) | |
1801 | return -EFAULT; | |
1802 | ||
1803 | ql_dbg(ql_dbg_tgt, vha, 0xe013, "CTIO start: vha(%d)\n", vha->vp_idx); | |
1804 | ||
1805 | if ((xmit_type & QLA_TGT_XMIT_DATA) && qlt_has_data(cmd)) { | |
1806 | if (qlt_pci_map_calc_cnt(prm) != 0) | |
1807 | return -EAGAIN; | |
1808 | } | |
1809 | ||
1810 | *full_req_cnt = prm->req_cnt; | |
1811 | ||
1812 | if (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT) { | |
1813 | prm->residual = se_cmd->residual_count; | |
1814 | ql_dbg(ql_dbg_tgt, vha, 0xe014, | |
1815 | "Residual underflow: %d (tag %d, " | |
1816 | "op %x, bufflen %d, rq_result %x)\n", prm->residual, | |
1817 | cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, | |
1818 | cmd->bufflen, prm->rq_result); | |
1819 | prm->rq_result |= SS_RESIDUAL_UNDER; | |
1820 | } else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { | |
1821 | prm->residual = se_cmd->residual_count; | |
1822 | ql_dbg(ql_dbg_tgt, vha, 0xe015, | |
1823 | "Residual overflow: %d (tag %d, " | |
1824 | "op %x, bufflen %d, rq_result %x)\n", prm->residual, | |
1825 | cmd->tag, se_cmd->t_task_cdb ? se_cmd->t_task_cdb[0] : 0, | |
1826 | cmd->bufflen, prm->rq_result); | |
1827 | prm->rq_result |= SS_RESIDUAL_OVER; | |
1828 | } | |
1829 | ||
1830 | if (xmit_type & QLA_TGT_XMIT_STATUS) { | |
1831 | /* | |
1832 | * If QLA_TGT_XMIT_DATA is not set, add_status_pkt will be | |
1833 | * ignored in *xmit_response() below | |
1834 | */ | |
1835 | if (qlt_has_data(cmd)) { | |
1836 | if (QLA_TGT_SENSE_VALID(prm->sense_buffer) || | |
1837 | (IS_FWI2_CAPABLE(ha) && | |
1838 | (prm->rq_result != 0))) { | |
1839 | prm->add_status_pkt = 1; | |
1840 | (*full_req_cnt)++; | |
1841 | } | |
1842 | } | |
1843 | } | |
1844 | ||
1845 | ql_dbg(ql_dbg_tgt, vha, 0xe016, | |
1846 | "req_cnt=%d, full_req_cnt=%d, add_status_pkt=%d\n", | |
1847 | prm->req_cnt, *full_req_cnt, prm->add_status_pkt); | |
1848 | ||
1849 | return 0; | |
1850 | } | |
1851 | ||
1852 | static inline int qlt_need_explicit_conf(struct qla_hw_data *ha, | |
1853 | struct qla_tgt_cmd *cmd, int sending_sense) | |
1854 | { | |
1855 | if (ha->tgt.enable_class_2) | |
1856 | return 0; | |
1857 | ||
1858 | if (sending_sense) | |
1859 | return cmd->conf_compl_supported; | |
1860 | else | |
1861 | return ha->tgt.enable_explicit_conf && | |
1862 | cmd->conf_compl_supported; | |
1863 | } | |
1864 | ||
1865 | #ifdef CONFIG_QLA_TGT_DEBUG_SRR | |
1866 | /* | |
1867 | * Original taken from the XFS code | |
1868 | */ | |
1869 | static unsigned long qlt_srr_random(void) | |
1870 | { | |
1871 | static int Inited; | |
1872 | static unsigned long RandomValue; | |
1873 | static DEFINE_SPINLOCK(lock); | |
1874 | /* cycles pseudo-randomly through all values between 1 and 2^31 - 2 */ | |
1875 | register long rv; | |
1876 | register long lo; | |
1877 | register long hi; | |
1878 | unsigned long flags; | |
1879 | ||
1880 | spin_lock_irqsave(&lock, flags); | |
1881 | if (!Inited) { | |
1882 | RandomValue = jiffies; | |
1883 | Inited = 1; | |
1884 | } | |
1885 | rv = RandomValue; | |
1886 | hi = rv / 127773; | |
1887 | lo = rv % 127773; | |
1888 | rv = 16807 * lo - 2836 * hi; | |
1889 | if (rv <= 0) | |
1890 | rv += 2147483647; | |
1891 | RandomValue = rv; | |
1892 | spin_unlock_irqrestore(&lock, flags); | |
1893 | return rv; | |
1894 | } | |
1895 | ||
1896 | static void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) | |
1897 | { | |
1898 | #if 0 /* This is not a real status packets lost, so it won't lead to SRR */ | |
1899 | if ((*xmit_type & QLA_TGT_XMIT_STATUS) && (qlt_srr_random() % 200) | |
1900 | == 50) { | |
1901 | *xmit_type &= ~QLA_TGT_XMIT_STATUS; | |
1902 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf015, | |
1903 | "Dropping cmd %p (tag %d) status", cmd, cmd->tag); | |
1904 | } | |
1905 | #endif | |
1906 | /* | |
1907 | * It's currently not possible to simulate SRRs for FCP_WRITE without | |
1908 | * a physical link layer failure, so don't even try here.. | |
1909 | */ | |
1910 | if (cmd->dma_data_direction != DMA_FROM_DEVICE) | |
1911 | return; | |
1912 | ||
1913 | if (qlt_has_data(cmd) && (cmd->sg_cnt > 1) && | |
1914 | ((qlt_srr_random() % 100) == 20)) { | |
1915 | int i, leave = 0; | |
1916 | unsigned int tot_len = 0; | |
1917 | ||
1918 | while (leave == 0) | |
1919 | leave = qlt_srr_random() % cmd->sg_cnt; | |
1920 | ||
1921 | for (i = 0; i < leave; i++) | |
1922 | tot_len += cmd->sg[i].length; | |
1923 | ||
1924 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf016, | |
1925 | "Cutting cmd %p (tag %d) buffer" | |
1926 | " tail to len %d, sg_cnt %d (cmd->bufflen %d," | |
1927 | " cmd->sg_cnt %d)", cmd, cmd->tag, tot_len, leave, | |
1928 | cmd->bufflen, cmd->sg_cnt); | |
1929 | ||
1930 | cmd->bufflen = tot_len; | |
1931 | cmd->sg_cnt = leave; | |
1932 | } | |
1933 | ||
1934 | if (qlt_has_data(cmd) && ((qlt_srr_random() % 100) == 70)) { | |
1935 | unsigned int offset = qlt_srr_random() % cmd->bufflen; | |
1936 | ||
1937 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf017, | |
1938 | "Cutting cmd %p (tag %d) buffer head " | |
1939 | "to offset %d (cmd->bufflen %d)", cmd, cmd->tag, offset, | |
1940 | cmd->bufflen); | |
1941 | if (offset == 0) | |
1942 | *xmit_type &= ~QLA_TGT_XMIT_DATA; | |
1943 | else if (qlt_set_data_offset(cmd, offset)) { | |
1944 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf018, | |
1945 | "qlt_set_data_offset() failed (tag %d)", cmd->tag); | |
1946 | } | |
1947 | } | |
1948 | } | |
1949 | #else | |
1950 | static inline void qlt_check_srr_debug(struct qla_tgt_cmd *cmd, int *xmit_type) | |
1951 | {} | |
1952 | #endif | |
1953 | ||
1954 | static void qlt_24xx_init_ctio_to_isp(struct ctio7_to_24xx *ctio, | |
1955 | struct qla_tgt_prm *prm) | |
1956 | { | |
1957 | prm->sense_buffer_len = min_t(uint32_t, prm->sense_buffer_len, | |
1958 | (uint32_t)sizeof(ctio->u.status1.sense_data)); | |
1959 | ctio->u.status0.flags |= | |
1960 | __constant_cpu_to_le16(CTIO7_FLAGS_SEND_STATUS); | |
1961 | if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 0)) { | |
1962 | ctio->u.status0.flags |= __constant_cpu_to_le16( | |
1963 | CTIO7_FLAGS_EXPLICIT_CONFORM | | |
1964 | CTIO7_FLAGS_CONFORM_REQ); | |
1965 | } | |
1966 | ctio->u.status0.residual = cpu_to_le32(prm->residual); | |
1967 | ctio->u.status0.scsi_status = cpu_to_le16(prm->rq_result); | |
1968 | if (QLA_TGT_SENSE_VALID(prm->sense_buffer)) { | |
1969 | int i; | |
1970 | ||
1971 | if (qlt_need_explicit_conf(prm->tgt->ha, prm->cmd, 1)) { | |
1972 | if (prm->cmd->se_cmd.scsi_status != 0) { | |
1973 | ql_dbg(ql_dbg_tgt, prm->cmd->vha, 0xe017, | |
1974 | "Skipping EXPLICIT_CONFORM and " | |
1975 | "CTIO7_FLAGS_CONFORM_REQ for FCP READ w/ " | |
1976 | "non GOOD status\n"); | |
1977 | goto skip_explict_conf; | |
1978 | } | |
1979 | ctio->u.status1.flags |= __constant_cpu_to_le16( | |
1980 | CTIO7_FLAGS_EXPLICIT_CONFORM | | |
1981 | CTIO7_FLAGS_CONFORM_REQ); | |
1982 | } | |
1983 | skip_explict_conf: | |
1984 | ctio->u.status1.flags &= | |
1985 | ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); | |
1986 | ctio->u.status1.flags |= | |
1987 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); | |
1988 | ctio->u.status1.scsi_status |= | |
1989 | __constant_cpu_to_le16(SS_SENSE_LEN_VALID); | |
1990 | ctio->u.status1.sense_length = | |
1991 | cpu_to_le16(prm->sense_buffer_len); | |
1992 | for (i = 0; i < prm->sense_buffer_len/4; i++) | |
1993 | ((uint32_t *)ctio->u.status1.sense_data)[i] = | |
1994 | cpu_to_be32(((uint32_t *)prm->sense_buffer)[i]); | |
1995 | #if 0 | |
1996 | if (unlikely((prm->sense_buffer_len % 4) != 0)) { | |
1997 | static int q; | |
1998 | if (q < 10) { | |
1999 | ql_dbg(ql_dbg_tgt, vha, 0xe04f, | |
2000 | "qla_target(%d): %d bytes of sense " | |
2001 | "lost", prm->tgt->ha->vp_idx, | |
2002 | prm->sense_buffer_len % 4); | |
2003 | q++; | |
2004 | } | |
2005 | } | |
2006 | #endif | |
2007 | } else { | |
2008 | ctio->u.status1.flags &= | |
2009 | ~__constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_0); | |
2010 | ctio->u.status1.flags |= | |
2011 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1); | |
2012 | ctio->u.status1.sense_length = 0; | |
2013 | memset(ctio->u.status1.sense_data, 0, | |
2014 | sizeof(ctio->u.status1.sense_data)); | |
2015 | } | |
2016 | ||
2017 | /* Sense with len > 24, is it possible ??? */ | |
2018 | } | |
2019 | ||
2020 | /* | |
2021 | * Callback to setup response of xmit_type of QLA_TGT_XMIT_DATA and * | |
2022 | * QLA_TGT_XMIT_STATUS for >= 24xx silicon | |
2023 | */ | |
2024 | int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type, | |
2025 | uint8_t scsi_status) | |
2026 | { | |
2027 | struct scsi_qla_host *vha = cmd->vha; | |
2028 | struct qla_hw_data *ha = vha->hw; | |
2029 | struct ctio7_to_24xx *pkt; | |
2030 | struct qla_tgt_prm prm; | |
2031 | uint32_t full_req_cnt = 0; | |
2032 | unsigned long flags = 0; | |
2033 | int res; | |
2034 | ||
2035 | memset(&prm, 0, sizeof(prm)); | |
2036 | qlt_check_srr_debug(cmd, &xmit_type); | |
2037 | ||
2038 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe018, | |
2039 | "is_send_status=%d, cmd->bufflen=%d, cmd->sg_cnt=%d, " | |
2040 | "cmd->dma_data_direction=%d\n", (xmit_type & QLA_TGT_XMIT_STATUS) ? | |
2041 | 1 : 0, cmd->bufflen, cmd->sg_cnt, cmd->dma_data_direction); | |
2042 | ||
2043 | res = qlt_pre_xmit_response(cmd, &prm, xmit_type, scsi_status, | |
2044 | &full_req_cnt); | |
2045 | if (unlikely(res != 0)) { | |
2046 | if (res == QLA_TGT_PRE_XMIT_RESP_CMD_ABORTED) | |
2047 | return 0; | |
2048 | ||
2049 | return res; | |
2050 | } | |
2051 | ||
2052 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
2053 | ||
2054 | /* Does F/W have an IOCBs for this request */ | |
2055 | res = qlt_check_reserve_free_req(vha, full_req_cnt); | |
2056 | if (unlikely(res)) | |
2057 | goto out_unmap_unlock; | |
2058 | ||
2059 | res = qlt_24xx_build_ctio_pkt(&prm, vha); | |
2060 | if (unlikely(res != 0)) | |
2061 | goto out_unmap_unlock; | |
2062 | ||
2063 | ||
2064 | pkt = (struct ctio7_to_24xx *)prm.pkt; | |
2065 | ||
2066 | if (qlt_has_data(cmd) && (xmit_type & QLA_TGT_XMIT_DATA)) { | |
2067 | pkt->u.status0.flags |= | |
2068 | __constant_cpu_to_le16(CTIO7_FLAGS_DATA_IN | | |
2069 | CTIO7_FLAGS_STATUS_MODE_0); | |
2070 | ||
2071 | qlt_load_data_segments(&prm, vha); | |
2072 | ||
2073 | if (prm.add_status_pkt == 0) { | |
2074 | if (xmit_type & QLA_TGT_XMIT_STATUS) { | |
2075 | pkt->u.status0.scsi_status = | |
2076 | cpu_to_le16(prm.rq_result); | |
2077 | pkt->u.status0.residual = | |
2078 | cpu_to_le32(prm.residual); | |
2079 | pkt->u.status0.flags |= __constant_cpu_to_le16( | |
2080 | CTIO7_FLAGS_SEND_STATUS); | |
2081 | if (qlt_need_explicit_conf(ha, cmd, 0)) { | |
2082 | pkt->u.status0.flags |= | |
2083 | __constant_cpu_to_le16( | |
2084 | CTIO7_FLAGS_EXPLICIT_CONFORM | | |
2085 | CTIO7_FLAGS_CONFORM_REQ); | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | } else { | |
2090 | /* | |
2091 | * We have already made sure that there is sufficient | |
2092 | * amount of request entries to not drop HW lock in | |
2093 | * req_pkt(). | |
2094 | */ | |
2095 | struct ctio7_to_24xx *ctio = | |
2096 | (struct ctio7_to_24xx *)qlt_get_req_pkt(vha); | |
2097 | ||
2098 | ql_dbg(ql_dbg_tgt, vha, 0xe019, | |
2099 | "Building additional status packet\n"); | |
2100 | ||
2101 | memcpy(ctio, pkt, sizeof(*ctio)); | |
2102 | ctio->entry_count = 1; | |
2103 | ctio->dseg_count = 0; | |
2104 | ctio->u.status1.flags &= ~__constant_cpu_to_le16( | |
2105 | CTIO7_FLAGS_DATA_IN); | |
2106 | ||
2107 | /* Real finish is ctio_m1's finish */ | |
2108 | pkt->handle |= CTIO_INTERMEDIATE_HANDLE_MARK; | |
2109 | pkt->u.status0.flags |= __constant_cpu_to_le16( | |
2110 | CTIO7_FLAGS_DONT_RET_CTIO); | |
2111 | qlt_24xx_init_ctio_to_isp((struct ctio7_to_24xx *)ctio, | |
2112 | &prm); | |
2113 | pr_debug("Status CTIO7: %p\n", ctio); | |
2114 | } | |
2115 | } else | |
2116 | qlt_24xx_init_ctio_to_isp(pkt, &prm); | |
2117 | ||
2118 | ||
2119 | cmd->state = QLA_TGT_STATE_PROCESSED; /* Mid-level is done processing */ | |
2120 | ||
2121 | ql_dbg(ql_dbg_tgt, vha, 0xe01a, | |
2122 | "Xmitting CTIO7 response pkt for 24xx: %p scsi_status: 0x%02x\n", | |
2123 | pkt, scsi_status); | |
2124 | ||
2125 | qla2x00_start_iocbs(vha, vha->req); | |
2126 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
2127 | ||
2128 | return 0; | |
2129 | ||
2130 | out_unmap_unlock: | |
2131 | if (cmd->sg_mapped) | |
2132 | qlt_unmap_sg(vha, cmd); | |
2133 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
2134 | ||
2135 | return res; | |
2136 | } | |
2137 | EXPORT_SYMBOL(qlt_xmit_response); | |
2138 | ||
2139 | int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd) | |
2140 | { | |
2141 | struct ctio7_to_24xx *pkt; | |
2142 | struct scsi_qla_host *vha = cmd->vha; | |
2143 | struct qla_hw_data *ha = vha->hw; | |
2144 | struct qla_tgt *tgt = cmd->tgt; | |
2145 | struct qla_tgt_prm prm; | |
2146 | unsigned long flags; | |
2147 | int res = 0; | |
2148 | ||
2149 | memset(&prm, 0, sizeof(prm)); | |
2150 | prm.cmd = cmd; | |
2151 | prm.tgt = tgt; | |
2152 | prm.sg = NULL; | |
2153 | prm.req_cnt = 1; | |
2154 | ||
2155 | /* Send marker if required */ | |
2156 | if (qlt_issue_marker(vha, 0) != QLA_SUCCESS) | |
2157 | return -EIO; | |
2158 | ||
2159 | ql_dbg(ql_dbg_tgt, vha, 0xe01b, "CTIO_start: vha(%d)", | |
2160 | (int)vha->vp_idx); | |
2161 | ||
2162 | /* Calculate number of entries and segments required */ | |
2163 | if (qlt_pci_map_calc_cnt(&prm) != 0) | |
2164 | return -EAGAIN; | |
2165 | ||
2166 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
2167 | ||
2168 | /* Does F/W have an IOCBs for this request */ | |
2169 | res = qlt_check_reserve_free_req(vha, prm.req_cnt); | |
2170 | if (res != 0) | |
2171 | goto out_unlock_free_unmap; | |
2172 | ||
2173 | res = qlt_24xx_build_ctio_pkt(&prm, vha); | |
2174 | if (unlikely(res != 0)) | |
2175 | goto out_unlock_free_unmap; | |
2176 | pkt = (struct ctio7_to_24xx *)prm.pkt; | |
2177 | pkt->u.status0.flags |= __constant_cpu_to_le16(CTIO7_FLAGS_DATA_OUT | | |
2178 | CTIO7_FLAGS_STATUS_MODE_0); | |
2179 | qlt_load_data_segments(&prm, vha); | |
2180 | ||
2181 | cmd->state = QLA_TGT_STATE_NEED_DATA; | |
2182 | ||
2183 | qla2x00_start_iocbs(vha, vha->req); | |
2184 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
2185 | ||
2186 | return res; | |
2187 | ||
2188 | out_unlock_free_unmap: | |
2189 | if (cmd->sg_mapped) | |
2190 | qlt_unmap_sg(vha, cmd); | |
2191 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
2192 | ||
2193 | return res; | |
2194 | } | |
2195 | EXPORT_SYMBOL(qlt_rdy_to_xfer); | |
2196 | ||
2197 | /* If hardware_lock held on entry, might drop it, then reaquire */ | |
2198 | /* This function sends the appropriate CTIO to ISP 2xxx or 24xx */ | |
2199 | static int __qlt_send_term_exchange(struct scsi_qla_host *vha, | |
2200 | struct qla_tgt_cmd *cmd, | |
2201 | struct atio_from_isp *atio) | |
2202 | { | |
2203 | struct ctio7_to_24xx *ctio24; | |
2204 | struct qla_hw_data *ha = vha->hw; | |
2205 | request_t *pkt; | |
2206 | int ret = 0; | |
2207 | ||
2208 | ql_dbg(ql_dbg_tgt, vha, 0xe01c, "Sending TERM EXCH CTIO (ha=%p)\n", ha); | |
2209 | ||
2210 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); | |
2211 | if (pkt == NULL) { | |
2212 | ql_dbg(ql_dbg_tgt, vha, 0xe050, | |
2213 | "qla_target(%d): %s failed: unable to allocate " | |
2214 | "request packet\n", vha->vp_idx, __func__); | |
2215 | return -ENOMEM; | |
2216 | } | |
2217 | ||
2218 | if (cmd != NULL) { | |
2219 | if (cmd->state < QLA_TGT_STATE_PROCESSED) { | |
2220 | ql_dbg(ql_dbg_tgt, vha, 0xe051, | |
2221 | "qla_target(%d): Terminating cmd %p with " | |
2222 | "incorrect state %d\n", vha->vp_idx, cmd, | |
2223 | cmd->state); | |
2224 | } else | |
2225 | ret = 1; | |
2226 | } | |
2227 | ||
2228 | pkt->entry_count = 1; | |
2229 | pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
2230 | ||
2231 | ctio24 = (struct ctio7_to_24xx *)pkt; | |
2232 | ctio24->entry_type = CTIO_TYPE7; | |
2233 | ctio24->nport_handle = cmd ? cmd->loop_id : CTIO7_NHANDLE_UNRECOGNIZED; | |
2234 | ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); | |
2235 | ctio24->vp_index = vha->vp_idx; | |
2236 | ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
2237 | ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
2238 | ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
2239 | ctio24->exchange_addr = atio->u.isp24.exchange_addr; | |
2240 | ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | | |
2241 | __constant_cpu_to_le16(CTIO7_FLAGS_STATUS_MODE_1 | | |
2242 | CTIO7_FLAGS_TERMINATE); | |
2243 | ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); | |
2244 | ||
2245 | /* Most likely, it isn't needed */ | |
2246 | ctio24->u.status1.residual = get_unaligned((uint32_t *) | |
2247 | &atio->u.isp24.fcp_cmnd.add_cdb[ | |
2248 | atio->u.isp24.fcp_cmnd.add_cdb_len]); | |
2249 | if (ctio24->u.status1.residual != 0) | |
2250 | ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; | |
2251 | ||
2252 | qla2x00_start_iocbs(vha, vha->req); | |
2253 | return ret; | |
2254 | } | |
2255 | ||
2256 | static void qlt_send_term_exchange(struct scsi_qla_host *vha, | |
2257 | struct qla_tgt_cmd *cmd, struct atio_from_isp *atio, int ha_locked) | |
2258 | { | |
2259 | unsigned long flags; | |
2260 | int rc; | |
2261 | ||
2262 | if (qlt_issue_marker(vha, ha_locked) < 0) | |
2263 | return; | |
2264 | ||
2265 | if (ha_locked) { | |
2266 | rc = __qlt_send_term_exchange(vha, cmd, atio); | |
2267 | goto done; | |
2268 | } | |
2269 | spin_lock_irqsave(&vha->hw->hardware_lock, flags); | |
2270 | rc = __qlt_send_term_exchange(vha, cmd, atio); | |
2271 | spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); | |
2272 | done: | |
2273 | if (rc == 1) { | |
2274 | if (!ha_locked && !in_interrupt()) | |
2275 | msleep(250); /* just in case */ | |
2276 | ||
2277 | vha->hw->tgt.tgt_ops->free_cmd(cmd); | |
2278 | } | |
2279 | } | |
2280 | ||
2281 | void qlt_free_cmd(struct qla_tgt_cmd *cmd) | |
2282 | { | |
2283 | BUG_ON(cmd->sg_mapped); | |
2284 | ||
2285 | if (unlikely(cmd->free_sg)) | |
2286 | kfree(cmd->sg); | |
2287 | kmem_cache_free(qla_tgt_cmd_cachep, cmd); | |
2288 | } | |
2289 | EXPORT_SYMBOL(qlt_free_cmd); | |
2290 | ||
2291 | /* ha->hardware_lock supposed to be held on entry */ | |
2292 | static int qlt_prepare_srr_ctio(struct scsi_qla_host *vha, | |
2293 | struct qla_tgt_cmd *cmd, void *ctio) | |
2294 | { | |
2295 | struct qla_tgt_srr_ctio *sc; | |
2296 | struct qla_hw_data *ha = vha->hw; | |
2297 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
2298 | struct qla_tgt_srr_imm *imm; | |
2299 | ||
2300 | tgt->ctio_srr_id++; | |
2301 | ||
2302 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf019, | |
2303 | "qla_target(%d): CTIO with SRR status received\n", vha->vp_idx); | |
2304 | ||
2305 | if (!ctio) { | |
2306 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf055, | |
2307 | "qla_target(%d): SRR CTIO, but ctio is NULL\n", | |
2308 | vha->vp_idx); | |
2309 | return -EINVAL; | |
2310 | } | |
2311 | ||
2312 | sc = kzalloc(sizeof(*sc), GFP_ATOMIC); | |
2313 | if (sc != NULL) { | |
2314 | sc->cmd = cmd; | |
2315 | /* IRQ is already OFF */ | |
2316 | spin_lock(&tgt->srr_lock); | |
2317 | sc->srr_id = tgt->ctio_srr_id; | |
2318 | list_add_tail(&sc->srr_list_entry, | |
2319 | &tgt->srr_ctio_list); | |
2320 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01a, | |
2321 | "CTIO SRR %p added (id %d)\n", sc, sc->srr_id); | |
2322 | if (tgt->imm_srr_id == tgt->ctio_srr_id) { | |
2323 | int found = 0; | |
2324 | list_for_each_entry(imm, &tgt->srr_imm_list, | |
2325 | srr_list_entry) { | |
2326 | if (imm->srr_id == sc->srr_id) { | |
2327 | found = 1; | |
2328 | break; | |
2329 | } | |
2330 | } | |
2331 | if (found) { | |
2332 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01b, | |
2333 | "Scheduling srr work\n"); | |
2334 | schedule_work(&tgt->srr_work); | |
2335 | } else { | |
2336 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf056, | |
2337 | "qla_target(%d): imm_srr_id " | |
2338 | "== ctio_srr_id (%d), but there is no " | |
2339 | "corresponding SRR IMM, deleting CTIO " | |
2340 | "SRR %p\n", vha->vp_idx, | |
2341 | tgt->ctio_srr_id, sc); | |
2342 | list_del(&sc->srr_list_entry); | |
2343 | spin_unlock(&tgt->srr_lock); | |
2344 | ||
2345 | kfree(sc); | |
2346 | return -EINVAL; | |
2347 | } | |
2348 | } | |
2349 | spin_unlock(&tgt->srr_lock); | |
2350 | } else { | |
2351 | struct qla_tgt_srr_imm *ti; | |
2352 | ||
2353 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf057, | |
2354 | "qla_target(%d): Unable to allocate SRR CTIO entry\n", | |
2355 | vha->vp_idx); | |
2356 | spin_lock(&tgt->srr_lock); | |
2357 | list_for_each_entry_safe(imm, ti, &tgt->srr_imm_list, | |
2358 | srr_list_entry) { | |
2359 | if (imm->srr_id == tgt->ctio_srr_id) { | |
2360 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01c, | |
2361 | "IMM SRR %p deleted (id %d)\n", | |
2362 | imm, imm->srr_id); | |
2363 | list_del(&imm->srr_list_entry); | |
2364 | qlt_reject_free_srr_imm(vha, imm, 1); | |
2365 | } | |
2366 | } | |
2367 | spin_unlock(&tgt->srr_lock); | |
2368 | ||
2369 | return -ENOMEM; | |
2370 | } | |
2371 | ||
2372 | return 0; | |
2373 | } | |
2374 | ||
2375 | /* | |
2376 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
2377 | */ | |
2378 | static int qlt_term_ctio_exchange(struct scsi_qla_host *vha, void *ctio, | |
2379 | struct qla_tgt_cmd *cmd, uint32_t status) | |
2380 | { | |
2381 | int term = 0; | |
2382 | ||
2383 | if (ctio != NULL) { | |
2384 | struct ctio7_from_24xx *c = (struct ctio7_from_24xx *)ctio; | |
2385 | term = !(c->flags & | |
2386 | __constant_cpu_to_le16(OF_TERM_EXCH)); | |
2387 | } else | |
2388 | term = 1; | |
2389 | ||
2390 | if (term) | |
2391 | qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); | |
2392 | ||
2393 | return term; | |
2394 | } | |
2395 | ||
2396 | /* ha->hardware_lock supposed to be held on entry */ | |
2397 | static inline struct qla_tgt_cmd *qlt_get_cmd(struct scsi_qla_host *vha, | |
2398 | uint32_t handle) | |
2399 | { | |
2400 | struct qla_hw_data *ha = vha->hw; | |
2401 | ||
2402 | handle--; | |
2403 | if (ha->tgt.cmds[handle] != NULL) { | |
2404 | struct qla_tgt_cmd *cmd = ha->tgt.cmds[handle]; | |
2405 | ha->tgt.cmds[handle] = NULL; | |
2406 | return cmd; | |
2407 | } else | |
2408 | return NULL; | |
2409 | } | |
2410 | ||
2411 | /* ha->hardware_lock supposed to be held on entry */ | |
2412 | static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha, | |
2413 | uint32_t handle, void *ctio) | |
2414 | { | |
2415 | struct qla_tgt_cmd *cmd = NULL; | |
2416 | ||
2417 | /* Clear out internal marks */ | |
2418 | handle &= ~(CTIO_COMPLETION_HANDLE_MARK | | |
2419 | CTIO_INTERMEDIATE_HANDLE_MARK); | |
2420 | ||
2421 | if (handle != QLA_TGT_NULL_HANDLE) { | |
2422 | if (unlikely(handle == QLA_TGT_SKIP_HANDLE)) { | |
2423 | ql_dbg(ql_dbg_tgt, vha, 0xe01d, "%s", | |
2424 | "SKIP_HANDLE CTIO\n"); | |
2425 | return NULL; | |
2426 | } | |
2427 | /* handle-1 is actually used */ | |
2428 | if (unlikely(handle > MAX_OUTSTANDING_COMMANDS)) { | |
2429 | ql_dbg(ql_dbg_tgt, vha, 0xe052, | |
2430 | "qla_target(%d): Wrong handle %x received\n", | |
2431 | vha->vp_idx, handle); | |
2432 | return NULL; | |
2433 | } | |
2434 | cmd = qlt_get_cmd(vha, handle); | |
2435 | if (unlikely(cmd == NULL)) { | |
2436 | ql_dbg(ql_dbg_tgt, vha, 0xe053, | |
2437 | "qla_target(%d): Suspicious: unable to " | |
2438 | "find the command with handle %x\n", vha->vp_idx, | |
2439 | handle); | |
2440 | return NULL; | |
2441 | } | |
2442 | } else if (ctio != NULL) { | |
2443 | /* We can't get loop ID from CTIO7 */ | |
2444 | ql_dbg(ql_dbg_tgt, vha, 0xe054, | |
2445 | "qla_target(%d): Wrong CTIO received: QLA24xx doesn't " | |
2446 | "support NULL handles\n", vha->vp_idx); | |
2447 | return NULL; | |
2448 | } | |
2449 | ||
2450 | return cmd; | |
2451 | } | |
2452 | ||
2453 | /* | |
2454 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
2455 | */ | |
2456 | static void qlt_do_ctio_completion(struct scsi_qla_host *vha, uint32_t handle, | |
2457 | uint32_t status, void *ctio) | |
2458 | { | |
2459 | struct qla_hw_data *ha = vha->hw; | |
2460 | struct se_cmd *se_cmd; | |
2461 | struct target_core_fabric_ops *tfo; | |
2462 | struct qla_tgt_cmd *cmd; | |
2463 | ||
2464 | ql_dbg(ql_dbg_tgt, vha, 0xe01e, | |
2465 | "qla_target(%d): handle(ctio %p status %#x) <- %08x\n", | |
2466 | vha->vp_idx, ctio, status, handle); | |
2467 | ||
2468 | if (handle & CTIO_INTERMEDIATE_HANDLE_MARK) { | |
2469 | /* That could happen only in case of an error/reset/abort */ | |
2470 | if (status != CTIO_SUCCESS) { | |
2471 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01d, | |
2472 | "Intermediate CTIO received" | |
2473 | " (status %x)\n", status); | |
2474 | } | |
2475 | return; | |
2476 | } | |
2477 | ||
2478 | cmd = qlt_ctio_to_cmd(vha, handle, ctio); | |
092e1dc3 | 2479 | if (cmd == NULL) |
2d70c103 | 2480 | return; |
092e1dc3 | 2481 | |
2d70c103 NB |
2482 | se_cmd = &cmd->se_cmd; |
2483 | tfo = se_cmd->se_tfo; | |
2484 | ||
2485 | if (cmd->sg_mapped) | |
2486 | qlt_unmap_sg(vha, cmd); | |
2487 | ||
2488 | if (unlikely(status != CTIO_SUCCESS)) { | |
2489 | switch (status & 0xFFFF) { | |
2490 | case CTIO_LIP_RESET: | |
2491 | case CTIO_TARGET_RESET: | |
2492 | case CTIO_ABORTED: | |
2493 | case CTIO_TIMEOUT: | |
2494 | case CTIO_INVALID_RX_ID: | |
2495 | /* They are OK */ | |
2496 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf058, | |
2497 | "qla_target(%d): CTIO with " | |
2498 | "status %#x received, state %x, se_cmd %p, " | |
2499 | "(LIP_RESET=e, ABORTED=2, TARGET_RESET=17, " | |
2500 | "TIMEOUT=b, INVALID_RX_ID=8)\n", vha->vp_idx, | |
2501 | status, cmd->state, se_cmd); | |
2502 | break; | |
2503 | ||
2504 | case CTIO_PORT_LOGGED_OUT: | |
2505 | case CTIO_PORT_UNAVAILABLE: | |
2506 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf059, | |
2507 | "qla_target(%d): CTIO with PORT LOGGED " | |
2508 | "OUT (29) or PORT UNAVAILABLE (28) status %x " | |
2509 | "received (state %x, se_cmd %p)\n", vha->vp_idx, | |
2510 | status, cmd->state, se_cmd); | |
2511 | break; | |
2512 | ||
2513 | case CTIO_SRR_RECEIVED: | |
2514 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05a, | |
2515 | "qla_target(%d): CTIO with SRR_RECEIVED" | |
2516 | " status %x received (state %x, se_cmd %p)\n", | |
2517 | vha->vp_idx, status, cmd->state, se_cmd); | |
2518 | if (qlt_prepare_srr_ctio(vha, cmd, ctio) != 0) | |
2519 | break; | |
2520 | else | |
2521 | return; | |
2522 | ||
2523 | default: | |
2524 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05b, | |
2525 | "qla_target(%d): CTIO with error status " | |
2526 | "0x%x received (state %x, se_cmd %p\n", | |
2527 | vha->vp_idx, status, cmd->state, se_cmd); | |
2528 | break; | |
2529 | } | |
2530 | ||
2531 | if (cmd->state != QLA_TGT_STATE_NEED_DATA) | |
2532 | if (qlt_term_ctio_exchange(vha, ctio, cmd, status)) | |
2533 | return; | |
2534 | } | |
2535 | ||
2536 | if (cmd->state == QLA_TGT_STATE_PROCESSED) { | |
2537 | ql_dbg(ql_dbg_tgt, vha, 0xe01f, "Command %p finished\n", cmd); | |
2538 | } else if (cmd->state == QLA_TGT_STATE_NEED_DATA) { | |
2539 | int rx_status = 0; | |
2540 | ||
2541 | cmd->state = QLA_TGT_STATE_DATA_IN; | |
2542 | ||
2543 | if (unlikely(status != CTIO_SUCCESS)) | |
2544 | rx_status = -EIO; | |
2545 | else | |
2546 | cmd->write_data_transferred = 1; | |
2547 | ||
2548 | ql_dbg(ql_dbg_tgt, vha, 0xe020, | |
2549 | "Data received, context %x, rx_status %d\n", | |
2550 | 0x0, rx_status); | |
2551 | ||
2552 | ha->tgt.tgt_ops->handle_data(cmd); | |
2553 | return; | |
2554 | } else if (cmd->state == QLA_TGT_STATE_ABORTED) { | |
2555 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01e, | |
2556 | "Aborted command %p (tag %d) finished\n", cmd, cmd->tag); | |
2557 | } else { | |
2558 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05c, | |
2559 | "qla_target(%d): A command in state (%d) should " | |
2560 | "not return a CTIO complete\n", vha->vp_idx, cmd->state); | |
2561 | } | |
2562 | ||
2563 | if (unlikely(status != CTIO_SUCCESS)) { | |
2564 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf01f, "Finishing failed CTIO\n"); | |
2565 | dump_stack(); | |
2566 | } | |
2567 | ||
2568 | ha->tgt.tgt_ops->free_cmd(cmd); | |
2569 | } | |
2570 | ||
2571 | /* ha->hardware_lock supposed to be held on entry */ | |
2572 | /* called via callback from qla2xxx */ | |
2573 | void qlt_ctio_completion(struct scsi_qla_host *vha, uint32_t handle) | |
2574 | { | |
2575 | struct qla_hw_data *ha = vha->hw; | |
2576 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
2577 | ||
2578 | if (likely(tgt == NULL)) { | |
2579 | ql_dbg(ql_dbg_tgt, vha, 0xe021, | |
2580 | "CTIO, but target mode not enabled" | |
2581 | " (ha %d %p handle %#x)", vha->vp_idx, ha, handle); | |
2582 | return; | |
2583 | } | |
2584 | ||
2585 | tgt->irq_cmd_count++; | |
2586 | qlt_do_ctio_completion(vha, handle, CTIO_SUCCESS, NULL); | |
2587 | tgt->irq_cmd_count--; | |
2588 | } | |
2589 | ||
2590 | static inline int qlt_get_fcp_task_attr(struct scsi_qla_host *vha, | |
2591 | uint8_t task_codes) | |
2592 | { | |
2593 | int fcp_task_attr; | |
2594 | ||
2595 | switch (task_codes) { | |
2596 | case ATIO_SIMPLE_QUEUE: | |
2597 | fcp_task_attr = MSG_SIMPLE_TAG; | |
2598 | break; | |
2599 | case ATIO_HEAD_OF_QUEUE: | |
2600 | fcp_task_attr = MSG_HEAD_TAG; | |
2601 | break; | |
2602 | case ATIO_ORDERED_QUEUE: | |
2603 | fcp_task_attr = MSG_ORDERED_TAG; | |
2604 | break; | |
2605 | case ATIO_ACA_QUEUE: | |
2606 | fcp_task_attr = MSG_ACA_TAG; | |
2607 | break; | |
2608 | case ATIO_UNTAGGED: | |
2609 | fcp_task_attr = MSG_SIMPLE_TAG; | |
2610 | break; | |
2611 | default: | |
2612 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05d, | |
2613 | "qla_target: unknown task code %x, use ORDERED instead\n", | |
2614 | task_codes); | |
2615 | fcp_task_attr = MSG_ORDERED_TAG; | |
2616 | break; | |
2617 | } | |
2618 | ||
2619 | return fcp_task_attr; | |
2620 | } | |
2621 | ||
2622 | static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *, | |
2623 | uint8_t *); | |
2624 | /* | |
2625 | * Process context for I/O path into tcm_qla2xxx code | |
2626 | */ | |
2627 | static void qlt_do_work(struct work_struct *work) | |
2628 | { | |
2629 | struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); | |
2630 | scsi_qla_host_t *vha = cmd->vha; | |
2631 | struct qla_hw_data *ha = vha->hw; | |
2632 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
2633 | struct qla_tgt_sess *sess = NULL; | |
2634 | struct atio_from_isp *atio = &cmd->atio; | |
2635 | unsigned char *cdb; | |
2636 | unsigned long flags; | |
2637 | uint32_t data_length; | |
2638 | int ret, fcp_task_attr, data_dir, bidi = 0; | |
2639 | ||
2640 | if (tgt->tgt_stop) | |
2641 | goto out_term; | |
2642 | ||
2643 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
2644 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
2645 | atio->u.isp24.fcp_hdr.s_id); | |
e1013f14 RD |
2646 | /* Do kref_get() before dropping qla_hw_data->hardware_lock. */ |
2647 | if (sess) | |
2648 | kref_get(&sess->se_sess->sess_kref); | |
2d70c103 NB |
2649 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
2650 | ||
2651 | if (unlikely(!sess)) { | |
2652 | uint8_t *s_id = atio->u.isp24.fcp_hdr.s_id; | |
2653 | ||
2654 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf022, | |
2655 | "qla_target(%d): Unable to find wwn login" | |
2656 | " (s_id %x:%x:%x), trying to create it manually\n", | |
2657 | vha->vp_idx, s_id[0], s_id[1], s_id[2]); | |
2658 | ||
2659 | if (atio->u.raw.entry_count > 1) { | |
2660 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf023, | |
2661 | "Dropping multy entry cmd %p\n", cmd); | |
2662 | goto out_term; | |
2663 | } | |
2664 | ||
2665 | mutex_lock(&ha->tgt.tgt_mutex); | |
2666 | sess = qlt_make_local_sess(vha, s_id); | |
2667 | /* sess has an extra creation ref. */ | |
2668 | mutex_unlock(&ha->tgt.tgt_mutex); | |
2669 | ||
2670 | if (!sess) | |
2671 | goto out_term; | |
2672 | } | |
2673 | ||
2674 | cmd->sess = sess; | |
2675 | cmd->loop_id = sess->loop_id; | |
2676 | cmd->conf_compl_supported = sess->conf_compl_supported; | |
2677 | ||
2678 | cdb = &atio->u.isp24.fcp_cmnd.cdb[0]; | |
2679 | cmd->tag = atio->u.isp24.exchange_addr; | |
2680 | cmd->unpacked_lun = scsilun_to_int( | |
2681 | (struct scsi_lun *)&atio->u.isp24.fcp_cmnd.lun); | |
2682 | ||
2683 | if (atio->u.isp24.fcp_cmnd.rddata && | |
2684 | atio->u.isp24.fcp_cmnd.wrdata) { | |
2685 | bidi = 1; | |
2686 | data_dir = DMA_TO_DEVICE; | |
2687 | } else if (atio->u.isp24.fcp_cmnd.rddata) | |
2688 | data_dir = DMA_FROM_DEVICE; | |
2689 | else if (atio->u.isp24.fcp_cmnd.wrdata) | |
2690 | data_dir = DMA_TO_DEVICE; | |
2691 | else | |
2692 | data_dir = DMA_NONE; | |
2693 | ||
2694 | fcp_task_attr = qlt_get_fcp_task_attr(vha, | |
2695 | atio->u.isp24.fcp_cmnd.task_attr); | |
2696 | data_length = be32_to_cpu(get_unaligned((uint32_t *) | |
2697 | &atio->u.isp24.fcp_cmnd.add_cdb[ | |
2698 | atio->u.isp24.fcp_cmnd.add_cdb_len])); | |
2699 | ||
2700 | ql_dbg(ql_dbg_tgt, vha, 0xe022, | |
2701 | "qla_target: START qla command: %p lun: 0x%04x (tag %d)\n", | |
2702 | cmd, cmd->unpacked_lun, cmd->tag); | |
2703 | ||
2704 | ret = vha->hw->tgt.tgt_ops->handle_cmd(vha, cmd, cdb, data_length, | |
2705 | fcp_task_attr, data_dir, bidi); | |
2706 | if (ret != 0) | |
2707 | goto out_term; | |
2708 | /* | |
2709 | * Drop extra session reference from qla_tgt_handle_cmd_for_atio*( | |
2710 | */ | |
2711 | ha->tgt.tgt_ops->put_sess(sess); | |
2712 | return; | |
2713 | ||
2714 | out_term: | |
2715 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf020, "Terminating work cmd %p", cmd); | |
2716 | /* | |
fae9eaf8 RD |
2717 | * cmd has not sent to target yet, so pass NULL as the second |
2718 | * argument to qlt_send_term_exchange() and free the memory here. | |
2d70c103 NB |
2719 | */ |
2720 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
2721 | qlt_send_term_exchange(vha, NULL, &cmd->atio, 1); | |
fae9eaf8 | 2722 | kmem_cache_free(qla_tgt_cmd_cachep, cmd); |
2d70c103 NB |
2723 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
2724 | if (sess) | |
2725 | ha->tgt.tgt_ops->put_sess(sess); | |
2726 | } | |
2727 | ||
2728 | /* ha->hardware_lock supposed to be held on entry */ | |
2729 | static int qlt_handle_cmd_for_atio(struct scsi_qla_host *vha, | |
2730 | struct atio_from_isp *atio) | |
2731 | { | |
2732 | struct qla_hw_data *ha = vha->hw; | |
2733 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
2734 | struct qla_tgt_cmd *cmd; | |
2735 | ||
2736 | if (unlikely(tgt->tgt_stop)) { | |
2737 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf021, | |
2738 | "New command while device %p is shutting down\n", tgt); | |
2739 | return -EFAULT; | |
2740 | } | |
2741 | ||
2742 | cmd = kmem_cache_zalloc(qla_tgt_cmd_cachep, GFP_ATOMIC); | |
2743 | if (!cmd) { | |
2744 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05e, | |
2745 | "qla_target(%d): Allocation of cmd failed\n", vha->vp_idx); | |
2746 | return -ENOMEM; | |
2747 | } | |
2748 | ||
2749 | INIT_LIST_HEAD(&cmd->cmd_list); | |
2750 | ||
2751 | memcpy(&cmd->atio, atio, sizeof(*atio)); | |
2752 | cmd->state = QLA_TGT_STATE_NEW; | |
2753 | cmd->tgt = ha->tgt.qla_tgt; | |
2754 | cmd->vha = vha; | |
2755 | ||
2756 | INIT_WORK(&cmd->work, qlt_do_work); | |
2757 | queue_work(qla_tgt_wq, &cmd->work); | |
2758 | return 0; | |
2759 | ||
2760 | } | |
2761 | ||
2762 | /* ha->hardware_lock supposed to be held on entry */ | |
2763 | static int qlt_issue_task_mgmt(struct qla_tgt_sess *sess, uint32_t lun, | |
2764 | int fn, void *iocb, int flags) | |
2765 | { | |
2766 | struct scsi_qla_host *vha = sess->vha; | |
2767 | struct qla_hw_data *ha = vha->hw; | |
2768 | struct qla_tgt_mgmt_cmd *mcmd; | |
2769 | int res; | |
2770 | uint8_t tmr_func; | |
2771 | ||
2772 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); | |
2773 | if (!mcmd) { | |
2774 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10009, | |
2775 | "qla_target(%d): Allocation of management " | |
2776 | "command failed, some commands and their data could " | |
2777 | "leak\n", vha->vp_idx); | |
2778 | return -ENOMEM; | |
2779 | } | |
2780 | memset(mcmd, 0, sizeof(*mcmd)); | |
2781 | mcmd->sess = sess; | |
2782 | ||
2783 | if (iocb) { | |
2784 | memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, | |
2785 | sizeof(mcmd->orig_iocb.imm_ntfy)); | |
2786 | } | |
2787 | mcmd->tmr_func = fn; | |
2788 | mcmd->flags = flags; | |
2789 | ||
2790 | switch (fn) { | |
2791 | case QLA_TGT_CLEAR_ACA: | |
2792 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10000, | |
2793 | "qla_target(%d): CLEAR_ACA received\n", sess->vha->vp_idx); | |
2794 | tmr_func = TMR_CLEAR_ACA; | |
2795 | break; | |
2796 | ||
2797 | case QLA_TGT_TARGET_RESET: | |
2798 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10001, | |
2799 | "qla_target(%d): TARGET_RESET received\n", | |
2800 | sess->vha->vp_idx); | |
2801 | tmr_func = TMR_TARGET_WARM_RESET; | |
2802 | break; | |
2803 | ||
2804 | case QLA_TGT_LUN_RESET: | |
2805 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10002, | |
2806 | "qla_target(%d): LUN_RESET received\n", sess->vha->vp_idx); | |
2807 | tmr_func = TMR_LUN_RESET; | |
2808 | break; | |
2809 | ||
2810 | case QLA_TGT_CLEAR_TS: | |
2811 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10003, | |
2812 | "qla_target(%d): CLEAR_TS received\n", sess->vha->vp_idx); | |
2813 | tmr_func = TMR_CLEAR_TASK_SET; | |
2814 | break; | |
2815 | ||
2816 | case QLA_TGT_ABORT_TS: | |
2817 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10004, | |
2818 | "qla_target(%d): ABORT_TS received\n", sess->vha->vp_idx); | |
2819 | tmr_func = TMR_ABORT_TASK_SET; | |
2820 | break; | |
2821 | #if 0 | |
2822 | case QLA_TGT_ABORT_ALL: | |
2823 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10005, | |
2824 | "qla_target(%d): Doing ABORT_ALL_TASKS\n", | |
2825 | sess->vha->vp_idx); | |
2826 | tmr_func = 0; | |
2827 | break; | |
2828 | ||
2829 | case QLA_TGT_ABORT_ALL_SESS: | |
2830 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10006, | |
2831 | "qla_target(%d): Doing ABORT_ALL_TASKS_SESS\n", | |
2832 | sess->vha->vp_idx); | |
2833 | tmr_func = 0; | |
2834 | break; | |
2835 | ||
2836 | case QLA_TGT_NEXUS_LOSS_SESS: | |
2837 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10007, | |
2838 | "qla_target(%d): Doing NEXUS_LOSS_SESS\n", | |
2839 | sess->vha->vp_idx); | |
2840 | tmr_func = 0; | |
2841 | break; | |
2842 | ||
2843 | case QLA_TGT_NEXUS_LOSS: | |
2844 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x10008, | |
2845 | "qla_target(%d): Doing NEXUS_LOSS\n", sess->vha->vp_idx); | |
2846 | tmr_func = 0; | |
2847 | break; | |
2848 | #endif | |
2849 | default: | |
2850 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000a, | |
2851 | "qla_target(%d): Unknown task mgmt fn 0x%x\n", | |
2852 | sess->vha->vp_idx, fn); | |
2853 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
2854 | return -ENOSYS; | |
2855 | } | |
2856 | ||
2857 | res = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, tmr_func, 0); | |
2858 | if (res != 0) { | |
2859 | ql_dbg(ql_dbg_tgt_tmr, vha, 0x1000b, | |
2860 | "qla_target(%d): tgt.tgt_ops->handle_tmr() failed: %d\n", | |
2861 | sess->vha->vp_idx, res); | |
2862 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
2863 | return -EFAULT; | |
2864 | } | |
2865 | ||
2866 | return 0; | |
2867 | } | |
2868 | ||
2869 | /* ha->hardware_lock supposed to be held on entry */ | |
2870 | static int qlt_handle_task_mgmt(struct scsi_qla_host *vha, void *iocb) | |
2871 | { | |
2872 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; | |
2873 | struct qla_hw_data *ha = vha->hw; | |
2874 | struct qla_tgt *tgt; | |
2875 | struct qla_tgt_sess *sess; | |
2876 | uint32_t lun, unpacked_lun; | |
2877 | int lun_size, fn; | |
2878 | ||
2879 | tgt = ha->tgt.qla_tgt; | |
2880 | ||
2881 | lun = a->u.isp24.fcp_cmnd.lun; | |
2882 | lun_size = sizeof(a->u.isp24.fcp_cmnd.lun); | |
2883 | fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; | |
2884 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
2885 | a->u.isp24.fcp_hdr.s_id); | |
2886 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); | |
2887 | ||
2888 | if (!sess) { | |
2889 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf024, | |
2890 | "qla_target(%d): task mgmt fn 0x%x for " | |
2891 | "non-existant session\n", vha->vp_idx, fn); | |
2892 | return qlt_sched_sess_work(tgt, QLA_TGT_SESS_WORK_TM, iocb, | |
2893 | sizeof(struct atio_from_isp)); | |
2894 | } | |
2895 | ||
2896 | return qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); | |
2897 | } | |
2898 | ||
2899 | /* ha->hardware_lock supposed to be held on entry */ | |
2900 | static int __qlt_abort_task(struct scsi_qla_host *vha, | |
2901 | struct imm_ntfy_from_isp *iocb, struct qla_tgt_sess *sess) | |
2902 | { | |
2903 | struct atio_from_isp *a = (struct atio_from_isp *)iocb; | |
2904 | struct qla_hw_data *ha = vha->hw; | |
2905 | struct qla_tgt_mgmt_cmd *mcmd; | |
2906 | uint32_t lun, unpacked_lun; | |
2907 | int rc; | |
2908 | ||
2909 | mcmd = mempool_alloc(qla_tgt_mgmt_cmd_mempool, GFP_ATOMIC); | |
2910 | if (mcmd == NULL) { | |
2911 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf05f, | |
2912 | "qla_target(%d): %s: Allocation of ABORT cmd failed\n", | |
2913 | vha->vp_idx, __func__); | |
2914 | return -ENOMEM; | |
2915 | } | |
2916 | memset(mcmd, 0, sizeof(*mcmd)); | |
2917 | ||
2918 | mcmd->sess = sess; | |
2919 | memcpy(&mcmd->orig_iocb.imm_ntfy, iocb, | |
2920 | sizeof(mcmd->orig_iocb.imm_ntfy)); | |
2921 | ||
2922 | lun = a->u.isp24.fcp_cmnd.lun; | |
2923 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); | |
2924 | ||
2925 | rc = ha->tgt.tgt_ops->handle_tmr(mcmd, unpacked_lun, TMR_ABORT_TASK, | |
2926 | le16_to_cpu(iocb->u.isp2x.seq_id)); | |
2927 | if (rc != 0) { | |
2928 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf060, | |
2929 | "qla_target(%d): tgt_ops->handle_tmr() failed: %d\n", | |
2930 | vha->vp_idx, rc); | |
2931 | mempool_free(mcmd, qla_tgt_mgmt_cmd_mempool); | |
2932 | return -EFAULT; | |
2933 | } | |
2934 | ||
2935 | return 0; | |
2936 | } | |
2937 | ||
2938 | /* ha->hardware_lock supposed to be held on entry */ | |
2939 | static int qlt_abort_task(struct scsi_qla_host *vha, | |
2940 | struct imm_ntfy_from_isp *iocb) | |
2941 | { | |
2942 | struct qla_hw_data *ha = vha->hw; | |
2943 | struct qla_tgt_sess *sess; | |
2944 | int loop_id; | |
2945 | ||
2946 | loop_id = GET_TARGET_ID(ha, (struct atio_from_isp *)iocb); | |
2947 | ||
2948 | sess = ha->tgt.tgt_ops->find_sess_by_loop_id(vha, loop_id); | |
2949 | if (sess == NULL) { | |
2950 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf025, | |
2951 | "qla_target(%d): task abort for unexisting " | |
2952 | "session\n", vha->vp_idx); | |
2953 | return qlt_sched_sess_work(ha->tgt.qla_tgt, | |
2954 | QLA_TGT_SESS_WORK_ABORT, iocb, sizeof(*iocb)); | |
2955 | } | |
2956 | ||
2957 | return __qlt_abort_task(vha, iocb, sess); | |
2958 | } | |
2959 | ||
2960 | /* | |
2961 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
2962 | */ | |
2963 | static int qlt_24xx_handle_els(struct scsi_qla_host *vha, | |
2964 | struct imm_ntfy_from_isp *iocb) | |
2965 | { | |
2966 | struct qla_hw_data *ha = vha->hw; | |
2967 | int res = 0; | |
2968 | ||
2969 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026, | |
2970 | "qla_target(%d): Port ID: 0x%02x:%02x:%02x" | |
2971 | " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0], | |
2972 | iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2], | |
2973 | iocb->u.isp24.status_subcode); | |
2974 | ||
2975 | switch (iocb->u.isp24.status_subcode) { | |
2976 | case ELS_PLOGI: | |
2977 | case ELS_FLOGI: | |
2978 | case ELS_PRLI: | |
2979 | case ELS_LOGO: | |
2980 | case ELS_PRLO: | |
2981 | res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); | |
2982 | break; | |
2983 | case ELS_PDISC: | |
2984 | case ELS_ADISC: | |
2985 | { | |
2986 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
2987 | if (tgt->link_reinit_iocb_pending) { | |
2988 | qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, | |
2989 | 0, 0, 0, 0, 0, 0); | |
2990 | tgt->link_reinit_iocb_pending = 0; | |
2991 | } | |
2992 | res = 1; /* send notify ack */ | |
2993 | break; | |
2994 | } | |
2995 | ||
2996 | default: | |
2997 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf061, | |
2998 | "qla_target(%d): Unsupported ELS command %x " | |
2999 | "received\n", vha->vp_idx, iocb->u.isp24.status_subcode); | |
3000 | res = qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS); | |
3001 | break; | |
3002 | } | |
3003 | ||
3004 | return res; | |
3005 | } | |
3006 | ||
3007 | static int qlt_set_data_offset(struct qla_tgt_cmd *cmd, uint32_t offset) | |
3008 | { | |
3009 | struct scatterlist *sg, *sgp, *sg_srr, *sg_srr_start = NULL; | |
3010 | size_t first_offset = 0, rem_offset = offset, tmp = 0; | |
3011 | int i, sg_srr_cnt, bufflen = 0; | |
3012 | ||
3013 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe023, | |
3014 | "Entering qla_tgt_set_data_offset: cmd: %p, cmd->sg: %p, " | |
3015 | "cmd->sg_cnt: %u, direction: %d\n", | |
3016 | cmd, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); | |
3017 | ||
3018 | /* | |
3019 | * FIXME: Reject non zero SRR relative offset until we can test | |
3020 | * this code properly. | |
3021 | */ | |
3022 | pr_debug("Rejecting non zero SRR rel_offs: %u\n", offset); | |
3023 | return -1; | |
3024 | ||
3025 | if (!cmd->sg || !cmd->sg_cnt) { | |
3026 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe055, | |
3027 | "Missing cmd->sg or zero cmd->sg_cnt in" | |
3028 | " qla_tgt_set_data_offset\n"); | |
3029 | return -EINVAL; | |
3030 | } | |
3031 | /* | |
3032 | * Walk the current cmd->sg list until we locate the new sg_srr_start | |
3033 | */ | |
3034 | for_each_sg(cmd->sg, sg, cmd->sg_cnt, i) { | |
3035 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe024, | |
3036 | "sg[%d]: %p page: %p, length: %d, offset: %d\n", | |
3037 | i, sg, sg_page(sg), sg->length, sg->offset); | |
3038 | ||
3039 | if ((sg->length + tmp) > offset) { | |
3040 | first_offset = rem_offset; | |
3041 | sg_srr_start = sg; | |
3042 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe025, | |
3043 | "Found matching sg[%d], using %p as sg_srr_start, " | |
3044 | "and using first_offset: %zu\n", i, sg, | |
3045 | first_offset); | |
3046 | break; | |
3047 | } | |
3048 | tmp += sg->length; | |
3049 | rem_offset -= sg->length; | |
3050 | } | |
3051 | ||
3052 | if (!sg_srr_start) { | |
3053 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe056, | |
3054 | "Unable to locate sg_srr_start for offset: %u\n", offset); | |
3055 | return -EINVAL; | |
3056 | } | |
3057 | sg_srr_cnt = (cmd->sg_cnt - i); | |
3058 | ||
3059 | sg_srr = kzalloc(sizeof(struct scatterlist) * sg_srr_cnt, GFP_KERNEL); | |
3060 | if (!sg_srr) { | |
3061 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe057, | |
3062 | "Unable to allocate sgp\n"); | |
3063 | return -ENOMEM; | |
3064 | } | |
3065 | sg_init_table(sg_srr, sg_srr_cnt); | |
3066 | sgp = &sg_srr[0]; | |
3067 | /* | |
3068 | * Walk the remaining list for sg_srr_start, mapping to the newly | |
3069 | * allocated sg_srr taking first_offset into account. | |
3070 | */ | |
3071 | for_each_sg(sg_srr_start, sg, sg_srr_cnt, i) { | |
3072 | if (first_offset) { | |
3073 | sg_set_page(sgp, sg_page(sg), | |
3074 | (sg->length - first_offset), first_offset); | |
3075 | first_offset = 0; | |
3076 | } else { | |
3077 | sg_set_page(sgp, sg_page(sg), sg->length, 0); | |
3078 | } | |
3079 | bufflen += sgp->length; | |
3080 | ||
3081 | sgp = sg_next(sgp); | |
3082 | if (!sgp) | |
3083 | break; | |
3084 | } | |
3085 | ||
3086 | cmd->sg = sg_srr; | |
3087 | cmd->sg_cnt = sg_srr_cnt; | |
3088 | cmd->bufflen = bufflen; | |
3089 | cmd->offset += offset; | |
3090 | cmd->free_sg = 1; | |
3091 | ||
3092 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe026, "New cmd->sg: %p\n", cmd->sg); | |
3093 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe027, "New cmd->sg_cnt: %u\n", | |
3094 | cmd->sg_cnt); | |
3095 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe028, "New cmd->bufflen: %u\n", | |
3096 | cmd->bufflen); | |
3097 | ql_dbg(ql_dbg_tgt, cmd->vha, 0xe029, "New cmd->offset: %u\n", | |
3098 | cmd->offset); | |
3099 | ||
3100 | if (cmd->sg_cnt < 0) | |
3101 | BUG(); | |
3102 | ||
3103 | if (cmd->bufflen < 0) | |
3104 | BUG(); | |
3105 | ||
3106 | return 0; | |
3107 | } | |
3108 | ||
3109 | static inline int qlt_srr_adjust_data(struct qla_tgt_cmd *cmd, | |
3110 | uint32_t srr_rel_offs, int *xmit_type) | |
3111 | { | |
3112 | int res = 0, rel_offs; | |
3113 | ||
3114 | rel_offs = srr_rel_offs - cmd->offset; | |
3115 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf027, "srr_rel_offs=%d, rel_offs=%d", | |
3116 | srr_rel_offs, rel_offs); | |
3117 | ||
3118 | *xmit_type = QLA_TGT_XMIT_ALL; | |
3119 | ||
3120 | if (rel_offs < 0) { | |
3121 | ql_dbg(ql_dbg_tgt_mgt, cmd->vha, 0xf062, | |
3122 | "qla_target(%d): SRR rel_offs (%d) < 0", | |
3123 | cmd->vha->vp_idx, rel_offs); | |
3124 | res = -1; | |
3125 | } else if (rel_offs == cmd->bufflen) | |
3126 | *xmit_type = QLA_TGT_XMIT_STATUS; | |
3127 | else if (rel_offs > 0) | |
3128 | res = qlt_set_data_offset(cmd, rel_offs); | |
3129 | ||
3130 | return res; | |
3131 | } | |
3132 | ||
3133 | /* No locks, thread context */ | |
3134 | static void qlt_handle_srr(struct scsi_qla_host *vha, | |
3135 | struct qla_tgt_srr_ctio *sctio, struct qla_tgt_srr_imm *imm) | |
3136 | { | |
3137 | struct imm_ntfy_from_isp *ntfy = | |
3138 | (struct imm_ntfy_from_isp *)&imm->imm_ntfy; | |
3139 | struct qla_hw_data *ha = vha->hw; | |
3140 | struct qla_tgt_cmd *cmd = sctio->cmd; | |
3141 | struct se_cmd *se_cmd = &cmd->se_cmd; | |
3142 | unsigned long flags; | |
3143 | int xmit_type = 0, resp = 0; | |
3144 | uint32_t offset; | |
3145 | uint16_t srr_ui; | |
3146 | ||
3147 | offset = le32_to_cpu(ntfy->u.isp24.srr_rel_offs); | |
3148 | srr_ui = ntfy->u.isp24.srr_ui; | |
3149 | ||
3150 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf028, "SRR cmd %p, srr_ui %x\n", | |
3151 | cmd, srr_ui); | |
3152 | ||
3153 | switch (srr_ui) { | |
3154 | case SRR_IU_STATUS: | |
3155 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
3156 | qlt_send_notify_ack(vha, ntfy, | |
3157 | 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); | |
3158 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
3159 | xmit_type = QLA_TGT_XMIT_STATUS; | |
3160 | resp = 1; | |
3161 | break; | |
3162 | case SRR_IU_DATA_IN: | |
3163 | if (!cmd->sg || !cmd->sg_cnt) { | |
3164 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf063, | |
3165 | "Unable to process SRR_IU_DATA_IN due to" | |
3166 | " missing cmd->sg, state: %d\n", cmd->state); | |
3167 | dump_stack(); | |
3168 | goto out_reject; | |
3169 | } | |
3170 | if (se_cmd->scsi_status != 0) { | |
3171 | ql_dbg(ql_dbg_tgt, vha, 0xe02a, | |
3172 | "Rejecting SRR_IU_DATA_IN with non GOOD " | |
3173 | "scsi_status\n"); | |
3174 | goto out_reject; | |
3175 | } | |
3176 | cmd->bufflen = se_cmd->data_length; | |
3177 | ||
3178 | if (qlt_has_data(cmd)) { | |
3179 | if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) | |
3180 | goto out_reject; | |
3181 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
3182 | qlt_send_notify_ack(vha, ntfy, | |
3183 | 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); | |
3184 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
3185 | resp = 1; | |
3186 | } else { | |
3187 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf064, | |
3188 | "qla_target(%d): SRR for in data for cmd " | |
3189 | "without them (tag %d, SCSI status %d), " | |
3190 | "reject", vha->vp_idx, cmd->tag, | |
3191 | cmd->se_cmd.scsi_status); | |
3192 | goto out_reject; | |
3193 | } | |
3194 | break; | |
3195 | case SRR_IU_DATA_OUT: | |
3196 | if (!cmd->sg || !cmd->sg_cnt) { | |
3197 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf065, | |
3198 | "Unable to process SRR_IU_DATA_OUT due to" | |
3199 | " missing cmd->sg\n"); | |
3200 | dump_stack(); | |
3201 | goto out_reject; | |
3202 | } | |
3203 | if (se_cmd->scsi_status != 0) { | |
3204 | ql_dbg(ql_dbg_tgt, vha, 0xe02b, | |
3205 | "Rejecting SRR_IU_DATA_OUT" | |
3206 | " with non GOOD scsi_status\n"); | |
3207 | goto out_reject; | |
3208 | } | |
3209 | cmd->bufflen = se_cmd->data_length; | |
3210 | ||
3211 | if (qlt_has_data(cmd)) { | |
3212 | if (qlt_srr_adjust_data(cmd, offset, &xmit_type) != 0) | |
3213 | goto out_reject; | |
3214 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
3215 | qlt_send_notify_ack(vha, ntfy, | |
3216 | 0, 0, 0, NOTIFY_ACK_SRR_FLAGS_ACCEPT, 0, 0); | |
3217 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
3218 | if (xmit_type & QLA_TGT_XMIT_DATA) | |
3219 | qlt_rdy_to_xfer(cmd); | |
3220 | } else { | |
3221 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf066, | |
3222 | "qla_target(%d): SRR for out data for cmd " | |
3223 | "without them (tag %d, SCSI status %d), " | |
3224 | "reject", vha->vp_idx, cmd->tag, | |
3225 | cmd->se_cmd.scsi_status); | |
3226 | goto out_reject; | |
3227 | } | |
3228 | break; | |
3229 | default: | |
3230 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf067, | |
3231 | "qla_target(%d): Unknown srr_ui value %x", | |
3232 | vha->vp_idx, srr_ui); | |
3233 | goto out_reject; | |
3234 | } | |
3235 | ||
3236 | /* Transmit response in case of status and data-in cases */ | |
3237 | if (resp) | |
3238 | qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); | |
3239 | ||
3240 | return; | |
3241 | ||
3242 | out_reject: | |
3243 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
3244 | qlt_send_notify_ack(vha, ntfy, 0, 0, 0, | |
3245 | NOTIFY_ACK_SRR_FLAGS_REJECT, | |
3246 | NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, | |
3247 | NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); | |
3248 | if (cmd->state == QLA_TGT_STATE_NEED_DATA) { | |
3249 | cmd->state = QLA_TGT_STATE_DATA_IN; | |
3250 | dump_stack(); | |
3251 | } else | |
3252 | qlt_send_term_exchange(vha, cmd, &cmd->atio, 1); | |
3253 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
3254 | } | |
3255 | ||
3256 | static void qlt_reject_free_srr_imm(struct scsi_qla_host *vha, | |
3257 | struct qla_tgt_srr_imm *imm, int ha_locked) | |
3258 | { | |
3259 | struct qla_hw_data *ha = vha->hw; | |
3260 | unsigned long flags = 0; | |
3261 | ||
3262 | if (!ha_locked) | |
3263 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
3264 | ||
3265 | qlt_send_notify_ack(vha, (void *)&imm->imm_ntfy, 0, 0, 0, | |
3266 | NOTIFY_ACK_SRR_FLAGS_REJECT, | |
3267 | NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, | |
3268 | NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); | |
3269 | ||
3270 | if (!ha_locked) | |
3271 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
3272 | ||
3273 | kfree(imm); | |
3274 | } | |
3275 | ||
3276 | static void qlt_handle_srr_work(struct work_struct *work) | |
3277 | { | |
3278 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, srr_work); | |
3279 | struct scsi_qla_host *vha = tgt->vha; | |
3280 | struct qla_tgt_srr_ctio *sctio; | |
3281 | unsigned long flags; | |
3282 | ||
3283 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf029, "Entering SRR work (tgt %p)\n", | |
3284 | tgt); | |
3285 | ||
3286 | restart: | |
3287 | spin_lock_irqsave(&tgt->srr_lock, flags); | |
3288 | list_for_each_entry(sctio, &tgt->srr_ctio_list, srr_list_entry) { | |
3289 | struct qla_tgt_srr_imm *imm, *i, *ti; | |
3290 | struct qla_tgt_cmd *cmd; | |
3291 | struct se_cmd *se_cmd; | |
3292 | ||
3293 | imm = NULL; | |
3294 | list_for_each_entry_safe(i, ti, &tgt->srr_imm_list, | |
3295 | srr_list_entry) { | |
3296 | if (i->srr_id == sctio->srr_id) { | |
3297 | list_del(&i->srr_list_entry); | |
3298 | if (imm) { | |
3299 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf068, | |
3300 | "qla_target(%d): There must be " | |
3301 | "only one IMM SRR per CTIO SRR " | |
3302 | "(IMM SRR %p, id %d, CTIO %p\n", | |
3303 | vha->vp_idx, i, i->srr_id, sctio); | |
3304 | qlt_reject_free_srr_imm(tgt->vha, i, 0); | |
3305 | } else | |
3306 | imm = i; | |
3307 | } | |
3308 | } | |
3309 | ||
3310 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02a, | |
3311 | "IMM SRR %p, CTIO SRR %p (id %d)\n", imm, sctio, | |
3312 | sctio->srr_id); | |
3313 | ||
3314 | if (imm == NULL) { | |
3315 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02b, | |
3316 | "Not found matching IMM for SRR CTIO (id %d)\n", | |
3317 | sctio->srr_id); | |
3318 | continue; | |
3319 | } else | |
3320 | list_del(&sctio->srr_list_entry); | |
3321 | ||
3322 | spin_unlock_irqrestore(&tgt->srr_lock, flags); | |
3323 | ||
3324 | cmd = sctio->cmd; | |
3325 | /* | |
3326 | * Reset qla_tgt_cmd SRR values and SGL pointer+count to follow | |
3327 | * tcm_qla2xxx_write_pending() and tcm_qla2xxx_queue_data_in() | |
3328 | * logic.. | |
3329 | */ | |
3330 | cmd->offset = 0; | |
3331 | if (cmd->free_sg) { | |
3332 | kfree(cmd->sg); | |
3333 | cmd->sg = NULL; | |
3334 | cmd->free_sg = 0; | |
3335 | } | |
3336 | se_cmd = &cmd->se_cmd; | |
3337 | ||
3338 | cmd->sg_cnt = se_cmd->t_data_nents; | |
3339 | cmd->sg = se_cmd->t_data_sg; | |
3340 | ||
3341 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02c, | |
3342 | "SRR cmd %p (se_cmd %p, tag %d, op %x), " | |
3343 | "sg_cnt=%d, offset=%d", cmd, &cmd->se_cmd, cmd->tag, | |
3344 | se_cmd->t_task_cdb[0], cmd->sg_cnt, cmd->offset); | |
3345 | ||
3346 | qlt_handle_srr(vha, sctio, imm); | |
3347 | ||
3348 | kfree(imm); | |
3349 | kfree(sctio); | |
3350 | goto restart; | |
3351 | } | |
3352 | spin_unlock_irqrestore(&tgt->srr_lock, flags); | |
3353 | } | |
3354 | ||
3355 | /* ha->hardware_lock supposed to be held on entry */ | |
3356 | static void qlt_prepare_srr_imm(struct scsi_qla_host *vha, | |
3357 | struct imm_ntfy_from_isp *iocb) | |
3358 | { | |
3359 | struct qla_tgt_srr_imm *imm; | |
3360 | struct qla_hw_data *ha = vha->hw; | |
3361 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
3362 | struct qla_tgt_srr_ctio *sctio; | |
3363 | ||
3364 | tgt->imm_srr_id++; | |
3365 | ||
3366 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02d, "qla_target(%d): SRR received\n", | |
3367 | vha->vp_idx); | |
3368 | ||
3369 | imm = kzalloc(sizeof(*imm), GFP_ATOMIC); | |
3370 | if (imm != NULL) { | |
3371 | memcpy(&imm->imm_ntfy, iocb, sizeof(imm->imm_ntfy)); | |
3372 | ||
3373 | /* IRQ is already OFF */ | |
3374 | spin_lock(&tgt->srr_lock); | |
3375 | imm->srr_id = tgt->imm_srr_id; | |
3376 | list_add_tail(&imm->srr_list_entry, | |
3377 | &tgt->srr_imm_list); | |
3378 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02e, | |
3379 | "IMM NTFY SRR %p added (id %d, ui %x)\n", | |
3380 | imm, imm->srr_id, iocb->u.isp24.srr_ui); | |
3381 | if (tgt->imm_srr_id == tgt->ctio_srr_id) { | |
3382 | int found = 0; | |
3383 | list_for_each_entry(sctio, &tgt->srr_ctio_list, | |
3384 | srr_list_entry) { | |
3385 | if (sctio->srr_id == imm->srr_id) { | |
3386 | found = 1; | |
3387 | break; | |
3388 | } | |
3389 | } | |
3390 | if (found) { | |
3391 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf02f, "%s", | |
3392 | "Scheduling srr work\n"); | |
3393 | schedule_work(&tgt->srr_work); | |
3394 | } else { | |
3395 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf030, | |
3396 | "qla_target(%d): imm_srr_id " | |
3397 | "== ctio_srr_id (%d), but there is no " | |
3398 | "corresponding SRR CTIO, deleting IMM " | |
3399 | "SRR %p\n", vha->vp_idx, tgt->ctio_srr_id, | |
3400 | imm); | |
3401 | list_del(&imm->srr_list_entry); | |
3402 | ||
3403 | kfree(imm); | |
3404 | ||
3405 | spin_unlock(&tgt->srr_lock); | |
3406 | goto out_reject; | |
3407 | } | |
3408 | } | |
3409 | spin_unlock(&tgt->srr_lock); | |
3410 | } else { | |
3411 | struct qla_tgt_srr_ctio *ts; | |
3412 | ||
3413 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf069, | |
3414 | "qla_target(%d): Unable to allocate SRR IMM " | |
3415 | "entry, SRR request will be rejected\n", vha->vp_idx); | |
3416 | ||
3417 | /* IRQ is already OFF */ | |
3418 | spin_lock(&tgt->srr_lock); | |
3419 | list_for_each_entry_safe(sctio, ts, &tgt->srr_ctio_list, | |
3420 | srr_list_entry) { | |
3421 | if (sctio->srr_id == tgt->imm_srr_id) { | |
3422 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf031, | |
3423 | "CTIO SRR %p deleted (id %d)\n", | |
3424 | sctio, sctio->srr_id); | |
3425 | list_del(&sctio->srr_list_entry); | |
3426 | qlt_send_term_exchange(vha, sctio->cmd, | |
3427 | &sctio->cmd->atio, 1); | |
3428 | kfree(sctio); | |
3429 | } | |
3430 | } | |
3431 | spin_unlock(&tgt->srr_lock); | |
3432 | goto out_reject; | |
3433 | } | |
3434 | ||
3435 | return; | |
3436 | ||
3437 | out_reject: | |
3438 | qlt_send_notify_ack(vha, iocb, 0, 0, 0, | |
3439 | NOTIFY_ACK_SRR_FLAGS_REJECT, | |
3440 | NOTIFY_ACK_SRR_REJECT_REASON_UNABLE_TO_PERFORM, | |
3441 | NOTIFY_ACK_SRR_FLAGS_REJECT_EXPL_NO_EXPL); | |
3442 | } | |
3443 | ||
3444 | /* | |
3445 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
3446 | */ | |
3447 | static void qlt_handle_imm_notify(struct scsi_qla_host *vha, | |
3448 | struct imm_ntfy_from_isp *iocb) | |
3449 | { | |
3450 | struct qla_hw_data *ha = vha->hw; | |
3451 | uint32_t add_flags = 0; | |
3452 | int send_notify_ack = 1; | |
3453 | uint16_t status; | |
3454 | ||
3455 | status = le16_to_cpu(iocb->u.isp2x.status); | |
3456 | switch (status) { | |
3457 | case IMM_NTFY_LIP_RESET: | |
3458 | { | |
3459 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf032, | |
3460 | "qla_target(%d): LIP reset (loop %#x), subcode %x\n", | |
3461 | vha->vp_idx, le16_to_cpu(iocb->u.isp24.nport_handle), | |
3462 | iocb->u.isp24.status_subcode); | |
3463 | ||
3464 | if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) | |
3465 | send_notify_ack = 0; | |
3466 | break; | |
3467 | } | |
3468 | ||
3469 | case IMM_NTFY_LIP_LINK_REINIT: | |
3470 | { | |
3471 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
3472 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf033, | |
3473 | "qla_target(%d): LINK REINIT (loop %#x, " | |
3474 | "subcode %x)\n", vha->vp_idx, | |
3475 | le16_to_cpu(iocb->u.isp24.nport_handle), | |
3476 | iocb->u.isp24.status_subcode); | |
3477 | if (tgt->link_reinit_iocb_pending) { | |
3478 | qlt_send_notify_ack(vha, &tgt->link_reinit_iocb, | |
3479 | 0, 0, 0, 0, 0, 0); | |
3480 | } | |
3481 | memcpy(&tgt->link_reinit_iocb, iocb, sizeof(*iocb)); | |
3482 | tgt->link_reinit_iocb_pending = 1; | |
3483 | /* | |
3484 | * QLogic requires to wait after LINK REINIT for possible | |
3485 | * PDISC or ADISC ELS commands | |
3486 | */ | |
3487 | send_notify_ack = 0; | |
3488 | break; | |
3489 | } | |
3490 | ||
3491 | case IMM_NTFY_PORT_LOGOUT: | |
3492 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf034, | |
3493 | "qla_target(%d): Port logout (loop " | |
3494 | "%#x, subcode %x)\n", vha->vp_idx, | |
3495 | le16_to_cpu(iocb->u.isp24.nport_handle), | |
3496 | iocb->u.isp24.status_subcode); | |
3497 | ||
3498 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS_SESS) == 0) | |
3499 | send_notify_ack = 0; | |
3500 | /* The sessions will be cleared in the callback, if needed */ | |
3501 | break; | |
3502 | ||
3503 | case IMM_NTFY_GLBL_TPRLO: | |
3504 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf035, | |
3505 | "qla_target(%d): Global TPRLO (%x)\n", vha->vp_idx, status); | |
3506 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) | |
3507 | send_notify_ack = 0; | |
3508 | /* The sessions will be cleared in the callback, if needed */ | |
3509 | break; | |
3510 | ||
3511 | case IMM_NTFY_PORT_CONFIG: | |
3512 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf036, | |
3513 | "qla_target(%d): Port config changed (%x)\n", vha->vp_idx, | |
3514 | status); | |
3515 | if (qlt_reset(vha, iocb, QLA_TGT_ABORT_ALL) == 0) | |
3516 | send_notify_ack = 0; | |
3517 | /* The sessions will be cleared in the callback, if needed */ | |
3518 | break; | |
3519 | ||
3520 | case IMM_NTFY_GLBL_LOGO: | |
3521 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06a, | |
3522 | "qla_target(%d): Link failure detected\n", | |
3523 | vha->vp_idx); | |
3524 | /* I_T nexus loss */ | |
3525 | if (qlt_reset(vha, iocb, QLA_TGT_NEXUS_LOSS) == 0) | |
3526 | send_notify_ack = 0; | |
3527 | break; | |
3528 | ||
3529 | case IMM_NTFY_IOCB_OVERFLOW: | |
3530 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06b, | |
3531 | "qla_target(%d): Cannot provide requested " | |
3532 | "capability (IOCB overflowed the immediate notify " | |
3533 | "resource count)\n", vha->vp_idx); | |
3534 | break; | |
3535 | ||
3536 | case IMM_NTFY_ABORT_TASK: | |
3537 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf037, | |
3538 | "qla_target(%d): Abort Task (S %08x I %#x -> " | |
3539 | "L %#x)\n", vha->vp_idx, | |
3540 | le16_to_cpu(iocb->u.isp2x.seq_id), | |
3541 | GET_TARGET_ID(ha, (struct atio_from_isp *)iocb), | |
3542 | le16_to_cpu(iocb->u.isp2x.lun)); | |
3543 | if (qlt_abort_task(vha, iocb) == 0) | |
3544 | send_notify_ack = 0; | |
3545 | break; | |
3546 | ||
3547 | case IMM_NTFY_RESOURCE: | |
3548 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06c, | |
3549 | "qla_target(%d): Out of resources, host %ld\n", | |
3550 | vha->vp_idx, vha->host_no); | |
3551 | break; | |
3552 | ||
3553 | case IMM_NTFY_MSG_RX: | |
3554 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf038, | |
3555 | "qla_target(%d): Immediate notify task %x\n", | |
3556 | vha->vp_idx, iocb->u.isp2x.task_flags); | |
3557 | if (qlt_handle_task_mgmt(vha, iocb) == 0) | |
3558 | send_notify_ack = 0; | |
3559 | break; | |
3560 | ||
3561 | case IMM_NTFY_ELS: | |
3562 | if (qlt_24xx_handle_els(vha, iocb) == 0) | |
3563 | send_notify_ack = 0; | |
3564 | break; | |
3565 | ||
3566 | case IMM_NTFY_SRR: | |
3567 | qlt_prepare_srr_imm(vha, iocb); | |
3568 | send_notify_ack = 0; | |
3569 | break; | |
3570 | ||
3571 | default: | |
3572 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06d, | |
3573 | "qla_target(%d): Received unknown immediate " | |
3574 | "notify status %x\n", vha->vp_idx, status); | |
3575 | break; | |
3576 | } | |
3577 | ||
3578 | if (send_notify_ack) | |
3579 | qlt_send_notify_ack(vha, iocb, add_flags, 0, 0, 0, 0, 0); | |
3580 | } | |
3581 | ||
3582 | /* | |
3583 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
3584 | * This function sends busy to ISP 2xxx or 24xx. | |
3585 | */ | |
3586 | static void qlt_send_busy(struct scsi_qla_host *vha, | |
3587 | struct atio_from_isp *atio, uint16_t status) | |
3588 | { | |
3589 | struct ctio7_to_24xx *ctio24; | |
3590 | struct qla_hw_data *ha = vha->hw; | |
3591 | request_t *pkt; | |
3592 | struct qla_tgt_sess *sess = NULL; | |
3593 | ||
3594 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
3595 | atio->u.isp24.fcp_hdr.s_id); | |
3596 | if (!sess) { | |
3597 | qlt_send_term_exchange(vha, NULL, atio, 1); | |
3598 | return; | |
3599 | } | |
3600 | /* Sending marker isn't necessary, since we called from ISR */ | |
3601 | ||
3602 | pkt = (request_t *)qla2x00_alloc_iocbs(vha, NULL); | |
3603 | if (!pkt) { | |
3604 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06e, | |
3605 | "qla_target(%d): %s failed: unable to allocate " | |
3606 | "request packet", vha->vp_idx, __func__); | |
3607 | return; | |
3608 | } | |
3609 | ||
3610 | pkt->entry_count = 1; | |
3611 | pkt->handle = QLA_TGT_SKIP_HANDLE | CTIO_COMPLETION_HANDLE_MARK; | |
3612 | ||
3613 | ctio24 = (struct ctio7_to_24xx *)pkt; | |
3614 | ctio24->entry_type = CTIO_TYPE7; | |
3615 | ctio24->nport_handle = sess->loop_id; | |
3616 | ctio24->timeout = __constant_cpu_to_le16(QLA_TGT_TIMEOUT); | |
3617 | ctio24->vp_index = vha->vp_idx; | |
3618 | ctio24->initiator_id[0] = atio->u.isp24.fcp_hdr.s_id[2]; | |
3619 | ctio24->initiator_id[1] = atio->u.isp24.fcp_hdr.s_id[1]; | |
3620 | ctio24->initiator_id[2] = atio->u.isp24.fcp_hdr.s_id[0]; | |
3621 | ctio24->exchange_addr = atio->u.isp24.exchange_addr; | |
3622 | ctio24->u.status1.flags = (atio->u.isp24.attr << 9) | | |
3623 | __constant_cpu_to_le16( | |
3624 | CTIO7_FLAGS_STATUS_MODE_1 | CTIO7_FLAGS_SEND_STATUS | | |
3625 | CTIO7_FLAGS_DONT_RET_CTIO); | |
3626 | /* | |
3627 | * CTIO from fw w/o se_cmd doesn't provide enough info to retry it, | |
3628 | * if the explicit conformation is used. | |
3629 | */ | |
3630 | ctio24->u.status1.ox_id = swab16(atio->u.isp24.fcp_hdr.ox_id); | |
3631 | ctio24->u.status1.scsi_status = cpu_to_le16(status); | |
3632 | ctio24->u.status1.residual = get_unaligned((uint32_t *) | |
3633 | &atio->u.isp24.fcp_cmnd.add_cdb[ | |
3634 | atio->u.isp24.fcp_cmnd.add_cdb_len]); | |
3635 | if (ctio24->u.status1.residual != 0) | |
3636 | ctio24->u.status1.scsi_status |= SS_RESIDUAL_UNDER; | |
3637 | ||
3638 | qla2x00_start_iocbs(vha, vha->req); | |
3639 | } | |
3640 | ||
3641 | /* ha->hardware_lock supposed to be held on entry */ | |
3642 | /* called via callback from qla2xxx */ | |
3643 | static void qlt_24xx_atio_pkt(struct scsi_qla_host *vha, | |
3644 | struct atio_from_isp *atio) | |
3645 | { | |
3646 | struct qla_hw_data *ha = vha->hw; | |
3647 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
3648 | int rc; | |
3649 | ||
3650 | if (unlikely(tgt == NULL)) { | |
3651 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf039, | |
3652 | "ATIO pkt, but no tgt (ha %p)", ha); | |
3653 | return; | |
3654 | } | |
3655 | ql_dbg(ql_dbg_tgt, vha, 0xe02c, | |
3656 | "qla_target(%d): ATIO pkt %p: type %02x count %02x", | |
3657 | vha->vp_idx, atio, atio->u.raw.entry_type, | |
3658 | atio->u.raw.entry_count); | |
3659 | /* | |
3660 | * In tgt_stop mode we also should allow all requests to pass. | |
3661 | * Otherwise, some commands can stuck. | |
3662 | */ | |
3663 | ||
3664 | tgt->irq_cmd_count++; | |
3665 | ||
3666 | switch (atio->u.raw.entry_type) { | |
3667 | case ATIO_TYPE7: | |
3668 | ql_dbg(ql_dbg_tgt, vha, 0xe02d, | |
3669 | "ATIO_TYPE7 instance %d, lun %Lx, read/write %d/%d, " | |
3670 | "add_cdb_len %d, data_length %04x, s_id %x:%x:%x\n", | |
3671 | vha->vp_idx, atio->u.isp24.fcp_cmnd.lun, | |
3672 | atio->u.isp24.fcp_cmnd.rddata, | |
3673 | atio->u.isp24.fcp_cmnd.wrdata, | |
3674 | atio->u.isp24.fcp_cmnd.add_cdb_len, | |
3675 | be32_to_cpu(get_unaligned((uint32_t *) | |
3676 | &atio->u.isp24.fcp_cmnd.add_cdb[ | |
3677 | atio->u.isp24.fcp_cmnd.add_cdb_len])), | |
3678 | atio->u.isp24.fcp_hdr.s_id[0], | |
3679 | atio->u.isp24.fcp_hdr.s_id[1], | |
3680 | atio->u.isp24.fcp_hdr.s_id[2]); | |
3681 | ||
3682 | if (unlikely(atio->u.isp24.exchange_addr == | |
3683 | ATIO_EXCHANGE_ADDRESS_UNKNOWN)) { | |
3684 | ql_dbg(ql_dbg_tgt, vha, 0xe058, | |
3685 | "qla_target(%d): ATIO_TYPE7 " | |
3686 | "received with UNKNOWN exchange address, " | |
3687 | "sending QUEUE_FULL\n", vha->vp_idx); | |
3688 | qlt_send_busy(vha, atio, SAM_STAT_TASK_SET_FULL); | |
3689 | break; | |
3690 | } | |
3691 | if (likely(atio->u.isp24.fcp_cmnd.task_mgmt_flags == 0)) | |
3692 | rc = qlt_handle_cmd_for_atio(vha, atio); | |
3693 | else | |
3694 | rc = qlt_handle_task_mgmt(vha, atio); | |
3695 | if (unlikely(rc != 0)) { | |
3696 | if (rc == -ESRCH) { | |
3697 | #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ | |
3698 | qlt_send_busy(vha, atio, SAM_STAT_BUSY); | |
3699 | #else | |
3700 | qlt_send_term_exchange(vha, NULL, atio, 1); | |
3701 | #endif | |
3702 | } else { | |
3703 | if (tgt->tgt_stop) { | |
3704 | ql_dbg(ql_dbg_tgt, vha, 0xe059, | |
3705 | "qla_target: Unable to send " | |
3706 | "command to target for req, " | |
3707 | "ignoring.\n"); | |
3708 | } else { | |
3709 | ql_dbg(ql_dbg_tgt, vha, 0xe05a, | |
3710 | "qla_target(%d): Unable to send " | |
3711 | "command to target, sending BUSY " | |
3712 | "status.\n", vha->vp_idx); | |
3713 | qlt_send_busy(vha, atio, SAM_STAT_BUSY); | |
3714 | } | |
3715 | } | |
3716 | } | |
3717 | break; | |
3718 | ||
3719 | case IMMED_NOTIFY_TYPE: | |
3720 | { | |
3721 | if (unlikely(atio->u.isp2x.entry_status != 0)) { | |
3722 | ql_dbg(ql_dbg_tgt, vha, 0xe05b, | |
3723 | "qla_target(%d): Received ATIO packet %x " | |
3724 | "with error status %x\n", vha->vp_idx, | |
3725 | atio->u.raw.entry_type, | |
3726 | atio->u.isp2x.entry_status); | |
3727 | break; | |
3728 | } | |
3729 | ql_dbg(ql_dbg_tgt, vha, 0xe02e, "%s", "IMMED_NOTIFY ATIO"); | |
3730 | qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)atio); | |
3731 | break; | |
3732 | } | |
3733 | ||
3734 | default: | |
3735 | ql_dbg(ql_dbg_tgt, vha, 0xe05c, | |
3736 | "qla_target(%d): Received unknown ATIO atio " | |
3737 | "type %x\n", vha->vp_idx, atio->u.raw.entry_type); | |
3738 | break; | |
3739 | } | |
3740 | ||
3741 | tgt->irq_cmd_count--; | |
3742 | } | |
3743 | ||
3744 | /* ha->hardware_lock supposed to be held on entry */ | |
3745 | /* called via callback from qla2xxx */ | |
3746 | static void qlt_response_pkt(struct scsi_qla_host *vha, response_t *pkt) | |
3747 | { | |
3748 | struct qla_hw_data *ha = vha->hw; | |
3749 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
3750 | ||
3751 | if (unlikely(tgt == NULL)) { | |
3752 | ql_dbg(ql_dbg_tgt, vha, 0xe05d, | |
3753 | "qla_target(%d): Response pkt %x received, but no " | |
3754 | "tgt (ha %p)\n", vha->vp_idx, pkt->entry_type, ha); | |
3755 | return; | |
3756 | } | |
3757 | ||
3758 | ql_dbg(ql_dbg_tgt, vha, 0xe02f, | |
3759 | "qla_target(%d): response pkt %p: T %02x C %02x S %02x " | |
3760 | "handle %#x\n", vha->vp_idx, pkt, pkt->entry_type, | |
3761 | pkt->entry_count, pkt->entry_status, pkt->handle); | |
3762 | ||
3763 | /* | |
3764 | * In tgt_stop mode we also should allow all requests to pass. | |
3765 | * Otherwise, some commands can stuck. | |
3766 | */ | |
3767 | ||
3768 | tgt->irq_cmd_count++; | |
3769 | ||
3770 | switch (pkt->entry_type) { | |
3771 | case CTIO_TYPE7: | |
3772 | { | |
3773 | struct ctio7_from_24xx *entry = (struct ctio7_from_24xx *)pkt; | |
3774 | ql_dbg(ql_dbg_tgt, vha, 0xe030, "CTIO_TYPE7: instance %d\n", | |
3775 | vha->vp_idx); | |
3776 | qlt_do_ctio_completion(vha, entry->handle, | |
3777 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), | |
3778 | entry); | |
3779 | break; | |
3780 | } | |
3781 | ||
3782 | case ACCEPT_TGT_IO_TYPE: | |
3783 | { | |
3784 | struct atio_from_isp *atio = (struct atio_from_isp *)pkt; | |
3785 | int rc; | |
3786 | ql_dbg(ql_dbg_tgt, vha, 0xe031, | |
3787 | "ACCEPT_TGT_IO instance %d status %04x " | |
3788 | "lun %04x read/write %d data_length %04x " | |
3789 | "target_id %02x rx_id %04x\n ", vha->vp_idx, | |
3790 | le16_to_cpu(atio->u.isp2x.status), | |
3791 | le16_to_cpu(atio->u.isp2x.lun), | |
3792 | atio->u.isp2x.execution_codes, | |
3793 | le32_to_cpu(atio->u.isp2x.data_length), GET_TARGET_ID(ha, | |
3794 | atio), atio->u.isp2x.rx_id); | |
3795 | if (atio->u.isp2x.status != | |
3796 | __constant_cpu_to_le16(ATIO_CDB_VALID)) { | |
3797 | ql_dbg(ql_dbg_tgt, vha, 0xe05e, | |
3798 | "qla_target(%d): ATIO with error " | |
3799 | "status %x received\n", vha->vp_idx, | |
3800 | le16_to_cpu(atio->u.isp2x.status)); | |
3801 | break; | |
3802 | } | |
3803 | ql_dbg(ql_dbg_tgt, vha, 0xe032, | |
3804 | "FCP CDB: 0x%02x, sizeof(cdb): %lu", | |
3805 | atio->u.isp2x.cdb[0], (unsigned long | |
3806 | int)sizeof(atio->u.isp2x.cdb)); | |
3807 | ||
3808 | rc = qlt_handle_cmd_for_atio(vha, atio); | |
3809 | if (unlikely(rc != 0)) { | |
3810 | if (rc == -ESRCH) { | |
3811 | #if 1 /* With TERM EXCHANGE some FC cards refuse to boot */ | |
3812 | qlt_send_busy(vha, atio, 0); | |
3813 | #else | |
3814 | qlt_send_term_exchange(vha, NULL, atio, 1); | |
3815 | #endif | |
3816 | } else { | |
3817 | if (tgt->tgt_stop) { | |
3818 | ql_dbg(ql_dbg_tgt, vha, 0xe05f, | |
3819 | "qla_target: Unable to send " | |
3820 | "command to target, sending TERM " | |
3821 | "EXCHANGE for rsp\n"); | |
3822 | qlt_send_term_exchange(vha, NULL, | |
3823 | atio, 1); | |
3824 | } else { | |
3825 | ql_dbg(ql_dbg_tgt, vha, 0xe060, | |
3826 | "qla_target(%d): Unable to send " | |
3827 | "command to target, sending BUSY " | |
3828 | "status\n", vha->vp_idx); | |
3829 | qlt_send_busy(vha, atio, 0); | |
3830 | } | |
3831 | } | |
3832 | } | |
3833 | } | |
3834 | break; | |
3835 | ||
3836 | case CONTINUE_TGT_IO_TYPE: | |
3837 | { | |
3838 | struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; | |
3839 | ql_dbg(ql_dbg_tgt, vha, 0xe033, | |
3840 | "CONTINUE_TGT_IO: instance %d\n", vha->vp_idx); | |
3841 | qlt_do_ctio_completion(vha, entry->handle, | |
3842 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), | |
3843 | entry); | |
3844 | break; | |
3845 | } | |
3846 | ||
3847 | case CTIO_A64_TYPE: | |
3848 | { | |
3849 | struct ctio_to_2xxx *entry = (struct ctio_to_2xxx *)pkt; | |
3850 | ql_dbg(ql_dbg_tgt, vha, 0xe034, "CTIO_A64: instance %d\n", | |
3851 | vha->vp_idx); | |
3852 | qlt_do_ctio_completion(vha, entry->handle, | |
3853 | le16_to_cpu(entry->status)|(pkt->entry_status << 16), | |
3854 | entry); | |
3855 | break; | |
3856 | } | |
3857 | ||
3858 | case IMMED_NOTIFY_TYPE: | |
3859 | ql_dbg(ql_dbg_tgt, vha, 0xe035, "%s", "IMMED_NOTIFY\n"); | |
3860 | qlt_handle_imm_notify(vha, (struct imm_ntfy_from_isp *)pkt); | |
3861 | break; | |
3862 | ||
3863 | case NOTIFY_ACK_TYPE: | |
3864 | if (tgt->notify_ack_expected > 0) { | |
3865 | struct nack_to_isp *entry = (struct nack_to_isp *)pkt; | |
3866 | ql_dbg(ql_dbg_tgt, vha, 0xe036, | |
3867 | "NOTIFY_ACK seq %08x status %x\n", | |
3868 | le16_to_cpu(entry->u.isp2x.seq_id), | |
3869 | le16_to_cpu(entry->u.isp2x.status)); | |
3870 | tgt->notify_ack_expected--; | |
3871 | if (entry->u.isp2x.status != | |
3872 | __constant_cpu_to_le16(NOTIFY_ACK_SUCCESS)) { | |
3873 | ql_dbg(ql_dbg_tgt, vha, 0xe061, | |
3874 | "qla_target(%d): NOTIFY_ACK " | |
3875 | "failed %x\n", vha->vp_idx, | |
3876 | le16_to_cpu(entry->u.isp2x.status)); | |
3877 | } | |
3878 | } else { | |
3879 | ql_dbg(ql_dbg_tgt, vha, 0xe062, | |
3880 | "qla_target(%d): Unexpected NOTIFY_ACK received\n", | |
3881 | vha->vp_idx); | |
3882 | } | |
3883 | break; | |
3884 | ||
3885 | case ABTS_RECV_24XX: | |
3886 | ql_dbg(ql_dbg_tgt, vha, 0xe037, | |
3887 | "ABTS_RECV_24XX: instance %d\n", vha->vp_idx); | |
3888 | qlt_24xx_handle_abts(vha, (struct abts_recv_from_24xx *)pkt); | |
3889 | break; | |
3890 | ||
3891 | case ABTS_RESP_24XX: | |
3892 | if (tgt->abts_resp_expected > 0) { | |
3893 | struct abts_resp_from_24xx_fw *entry = | |
3894 | (struct abts_resp_from_24xx_fw *)pkt; | |
3895 | ql_dbg(ql_dbg_tgt, vha, 0xe038, | |
3896 | "ABTS_RESP_24XX: compl_status %x\n", | |
3897 | entry->compl_status); | |
3898 | tgt->abts_resp_expected--; | |
3899 | if (le16_to_cpu(entry->compl_status) != | |
3900 | ABTS_RESP_COMPL_SUCCESS) { | |
3901 | if ((entry->error_subcode1 == 0x1E) && | |
3902 | (entry->error_subcode2 == 0)) { | |
3903 | /* | |
3904 | * We've got a race here: aborted | |
3905 | * exchange not terminated, i.e. | |
3906 | * response for the aborted command was | |
3907 | * sent between the abort request was | |
3908 | * received and processed. | |
3909 | * Unfortunately, the firmware has a | |
3910 | * silly requirement that all aborted | |
3911 | * exchanges must be explicitely | |
3912 | * terminated, otherwise it refuses to | |
3913 | * send responses for the abort | |
3914 | * requests. So, we have to | |
3915 | * (re)terminate the exchange and retry | |
3916 | * the abort response. | |
3917 | */ | |
3918 | qlt_24xx_retry_term_exchange(vha, | |
3919 | entry); | |
3920 | } else | |
3921 | ql_dbg(ql_dbg_tgt, vha, 0xe063, | |
3922 | "qla_target(%d): ABTS_RESP_24XX " | |
3923 | "failed %x (subcode %x:%x)", | |
3924 | vha->vp_idx, entry->compl_status, | |
3925 | entry->error_subcode1, | |
3926 | entry->error_subcode2); | |
3927 | } | |
3928 | } else { | |
3929 | ql_dbg(ql_dbg_tgt, vha, 0xe064, | |
3930 | "qla_target(%d): Unexpected ABTS_RESP_24XX " | |
3931 | "received\n", vha->vp_idx); | |
3932 | } | |
3933 | break; | |
3934 | ||
3935 | default: | |
3936 | ql_dbg(ql_dbg_tgt, vha, 0xe065, | |
3937 | "qla_target(%d): Received unknown response pkt " | |
3938 | "type %x\n", vha->vp_idx, pkt->entry_type); | |
3939 | break; | |
3940 | } | |
3941 | ||
3942 | tgt->irq_cmd_count--; | |
3943 | } | |
3944 | ||
3945 | /* | |
3946 | * ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire | |
3947 | */ | |
3948 | void qlt_async_event(uint16_t code, struct scsi_qla_host *vha, | |
3949 | uint16_t *mailbox) | |
3950 | { | |
3951 | struct qla_hw_data *ha = vha->hw; | |
3952 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
4f1d0f19 | 3953 | int login_code; |
2d70c103 NB |
3954 | |
3955 | ql_dbg(ql_dbg_tgt, vha, 0xe039, | |
3956 | "scsi(%ld): ha state %d init_done %d oper_mode %d topo %d\n", | |
3957 | vha->host_no, atomic_read(&vha->loop_state), vha->flags.init_done, | |
3958 | ha->operating_mode, ha->current_topology); | |
3959 | ||
3960 | if (!ha->tgt.tgt_ops) | |
3961 | return; | |
3962 | ||
3963 | if (unlikely(tgt == NULL)) { | |
3964 | ql_dbg(ql_dbg_tgt, vha, 0xe03a, | |
3965 | "ASYNC EVENT %#x, but no tgt (ha %p)\n", code, ha); | |
3966 | return; | |
3967 | } | |
3968 | ||
3969 | if (((code == MBA_POINT_TO_POINT) || (code == MBA_CHG_IN_CONNECTION)) && | |
3970 | IS_QLA2100(ha)) | |
3971 | return; | |
3972 | /* | |
3973 | * In tgt_stop mode we also should allow all requests to pass. | |
3974 | * Otherwise, some commands can stuck. | |
3975 | */ | |
3976 | ||
3977 | tgt->irq_cmd_count++; | |
3978 | ||
3979 | switch (code) { | |
3980 | case MBA_RESET: /* Reset */ | |
3981 | case MBA_SYSTEM_ERR: /* System Error */ | |
3982 | case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */ | |
3983 | case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */ | |
3984 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03a, | |
3985 | "qla_target(%d): System error async event %#x " | |
3986 | "occured", vha->vp_idx, code); | |
3987 | break; | |
3988 | case MBA_WAKEUP_THRES: /* Request Queue Wake-up. */ | |
3989 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); | |
3990 | break; | |
3991 | ||
3992 | case MBA_LOOP_UP: | |
3993 | { | |
3994 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03b, | |
3995 | "qla_target(%d): Async LOOP_UP occured " | |
4f1d0f19 AC |
3996 | "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, |
3997 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
3998 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
2d70c103 NB |
3999 | if (tgt->link_reinit_iocb_pending) { |
4000 | qlt_send_notify_ack(vha, (void *)&tgt->link_reinit_iocb, | |
4001 | 0, 0, 0, 0, 0, 0); | |
4002 | tgt->link_reinit_iocb_pending = 0; | |
4003 | } | |
4004 | break; | |
4005 | } | |
4006 | ||
4007 | case MBA_LIP_OCCURRED: | |
4008 | case MBA_LOOP_DOWN: | |
4009 | case MBA_LIP_RESET: | |
4010 | case MBA_RSCN_UPDATE: | |
4011 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03c, | |
4012 | "qla_target(%d): Async event %#x occured " | |
4f1d0f19 AC |
4013 | "(m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, code, |
4014 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
4015 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
2d70c103 NB |
4016 | break; |
4017 | ||
4018 | case MBA_PORT_UPDATE: | |
4019 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03d, | |
4020 | "qla_target(%d): Port update async event %#x " | |
4f1d0f19 AC |
4021 | "occured: updating the ports database (m[0]=%x, m[1]=%x, " |
4022 | "m[2]=%x, m[3]=%x)", vha->vp_idx, code, | |
4023 | le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
4024 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
4025 | ||
4026 | login_code = le16_to_cpu(mailbox[2]); | |
4027 | if (login_code == 0x4) | |
2d70c103 NB |
4028 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03e, |
4029 | "Async MB 2: Got PLOGI Complete\n"); | |
4f1d0f19 | 4030 | else if (login_code == 0x7) |
2d70c103 NB |
4031 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf03f, |
4032 | "Async MB 2: Port Logged Out\n"); | |
4033 | break; | |
4034 | ||
4035 | default: | |
4036 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf040, | |
4037 | "qla_target(%d): Async event %#x occured: " | |
4f1d0f19 AC |
4038 | "ignore (m[0]=%x, m[1]=%x, m[2]=%x, m[3]=%x)", vha->vp_idx, |
4039 | code, le16_to_cpu(mailbox[0]), le16_to_cpu(mailbox[1]), | |
4040 | le16_to_cpu(mailbox[2]), le16_to_cpu(mailbox[3])); | |
2d70c103 NB |
4041 | break; |
4042 | } | |
4043 | ||
4044 | tgt->irq_cmd_count--; | |
4045 | } | |
4046 | ||
4047 | static fc_port_t *qlt_get_port_database(struct scsi_qla_host *vha, | |
4048 | uint16_t loop_id) | |
4049 | { | |
4050 | fc_port_t *fcport; | |
4051 | int rc; | |
4052 | ||
4053 | fcport = kzalloc(sizeof(*fcport), GFP_KERNEL); | |
4054 | if (!fcport) { | |
4055 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf06f, | |
4056 | "qla_target(%d): Allocation of tmp FC port failed", | |
4057 | vha->vp_idx); | |
4058 | return NULL; | |
4059 | } | |
4060 | ||
4061 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf041, "loop_id %d", loop_id); | |
4062 | ||
4063 | fcport->loop_id = loop_id; | |
4064 | ||
4065 | rc = qla2x00_get_port_database(vha, fcport, 0); | |
4066 | if (rc != QLA_SUCCESS) { | |
4067 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf070, | |
4068 | "qla_target(%d): Failed to retrieve fcport " | |
4069 | "information -- get_port_database() returned %x " | |
4070 | "(loop_id=0x%04x)", vha->vp_idx, rc, loop_id); | |
4071 | kfree(fcport); | |
4072 | return NULL; | |
4073 | } | |
4074 | ||
4075 | return fcport; | |
4076 | } | |
4077 | ||
4078 | /* Must be called under tgt_mutex */ | |
4079 | static struct qla_tgt_sess *qlt_make_local_sess(struct scsi_qla_host *vha, | |
4080 | uint8_t *s_id) | |
4081 | { | |
4082 | struct qla_hw_data *ha = vha->hw; | |
4083 | struct qla_tgt_sess *sess = NULL; | |
4084 | fc_port_t *fcport = NULL; | |
4085 | int rc, global_resets; | |
4086 | uint16_t loop_id = 0; | |
4087 | ||
4088 | retry: | |
4089 | global_resets = atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count); | |
4090 | ||
4091 | rc = qla24xx_get_loop_id(vha, s_id, &loop_id); | |
4092 | if (rc != 0) { | |
4093 | if ((s_id[0] == 0xFF) && | |
4094 | (s_id[1] == 0xFC)) { | |
4095 | /* | |
4096 | * This is Domain Controller, so it should be | |
4097 | * OK to drop SCSI commands from it. | |
4098 | */ | |
4099 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf042, | |
4100 | "Unable to find initiator with S_ID %x:%x:%x", | |
4101 | s_id[0], s_id[1], s_id[2]); | |
4102 | } else | |
4103 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf071, | |
4104 | "qla_target(%d): Unable to find " | |
4105 | "initiator with S_ID %x:%x:%x", | |
4106 | vha->vp_idx, s_id[0], s_id[1], | |
4107 | s_id[2]); | |
4108 | return NULL; | |
4109 | } | |
4110 | ||
4111 | fcport = qlt_get_port_database(vha, loop_id); | |
4112 | if (!fcport) | |
4113 | return NULL; | |
4114 | ||
4115 | if (global_resets != | |
4116 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)) { | |
4117 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf043, | |
4118 | "qla_target(%d): global reset during session discovery " | |
4119 | "(counter was %d, new %d), retrying", vha->vp_idx, | |
4120 | global_resets, | |
4121 | atomic_read(&ha->tgt.qla_tgt->tgt_global_resets_count)); | |
4122 | goto retry; | |
4123 | } | |
4124 | ||
4125 | sess = qlt_create_sess(vha, fcport, true); | |
4126 | ||
4127 | kfree(fcport); | |
4128 | return sess; | |
4129 | } | |
4130 | ||
4131 | static void qlt_abort_work(struct qla_tgt *tgt, | |
4132 | struct qla_tgt_sess_work_param *prm) | |
4133 | { | |
4134 | struct scsi_qla_host *vha = tgt->vha; | |
4135 | struct qla_hw_data *ha = vha->hw; | |
4136 | struct qla_tgt_sess *sess = NULL; | |
4137 | unsigned long flags; | |
4138 | uint32_t be_s_id; | |
4139 | uint8_t s_id[3]; | |
4140 | int rc; | |
4141 | ||
4142 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4143 | ||
4144 | if (tgt->tgt_stop) | |
4145 | goto out_term; | |
4146 | ||
4147 | s_id[0] = prm->abts.fcp_hdr_le.s_id[2]; | |
4148 | s_id[1] = prm->abts.fcp_hdr_le.s_id[1]; | |
4149 | s_id[2] = prm->abts.fcp_hdr_le.s_id[0]; | |
4150 | ||
4151 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, | |
4152 | (unsigned char *)&be_s_id); | |
4153 | if (!sess) { | |
4154 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4155 | ||
4156 | mutex_lock(&ha->tgt.tgt_mutex); | |
4157 | sess = qlt_make_local_sess(vha, s_id); | |
4158 | /* sess has got an extra creation ref */ | |
4159 | mutex_unlock(&ha->tgt.tgt_mutex); | |
4160 | ||
4161 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4162 | if (!sess) | |
4163 | goto out_term; | |
4164 | } else { | |
4165 | kref_get(&sess->se_sess->sess_kref); | |
4166 | } | |
4167 | ||
4168 | if (tgt->tgt_stop) | |
4169 | goto out_term; | |
4170 | ||
4171 | rc = __qlt_24xx_handle_abts(vha, &prm->abts, sess); | |
4172 | if (rc != 0) | |
4173 | goto out_term; | |
4174 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4175 | ||
4176 | ha->tgt.tgt_ops->put_sess(sess); | |
4177 | return; | |
4178 | ||
4179 | out_term: | |
4180 | qlt_24xx_send_abts_resp(vha, &prm->abts, FCP_TMF_REJECTED, false); | |
4181 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4182 | if (sess) | |
4183 | ha->tgt.tgt_ops->put_sess(sess); | |
4184 | } | |
4185 | ||
4186 | static void qlt_tmr_work(struct qla_tgt *tgt, | |
4187 | struct qla_tgt_sess_work_param *prm) | |
4188 | { | |
4189 | struct atio_from_isp *a = &prm->tm_iocb2; | |
4190 | struct scsi_qla_host *vha = tgt->vha; | |
4191 | struct qla_hw_data *ha = vha->hw; | |
4192 | struct qla_tgt_sess *sess = NULL; | |
4193 | unsigned long flags; | |
4194 | uint8_t *s_id = NULL; /* to hide compiler warnings */ | |
4195 | int rc; | |
4196 | uint32_t lun, unpacked_lun; | |
4197 | int lun_size, fn; | |
4198 | void *iocb; | |
4199 | ||
4200 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4201 | ||
4202 | if (tgt->tgt_stop) | |
4203 | goto out_term; | |
4204 | ||
4205 | s_id = prm->tm_iocb2.u.isp24.fcp_hdr.s_id; | |
4206 | sess = ha->tgt.tgt_ops->find_sess_by_s_id(vha, s_id); | |
4207 | if (!sess) { | |
4208 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4209 | ||
4210 | mutex_lock(&ha->tgt.tgt_mutex); | |
4211 | sess = qlt_make_local_sess(vha, s_id); | |
4212 | /* sess has got an extra creation ref */ | |
4213 | mutex_unlock(&ha->tgt.tgt_mutex); | |
4214 | ||
4215 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4216 | if (!sess) | |
4217 | goto out_term; | |
4218 | } else { | |
4219 | kref_get(&sess->se_sess->sess_kref); | |
4220 | } | |
4221 | ||
4222 | iocb = a; | |
4223 | lun = a->u.isp24.fcp_cmnd.lun; | |
4224 | lun_size = sizeof(lun); | |
4225 | fn = a->u.isp24.fcp_cmnd.task_mgmt_flags; | |
4226 | unpacked_lun = scsilun_to_int((struct scsi_lun *)&lun); | |
4227 | ||
4228 | rc = qlt_issue_task_mgmt(sess, unpacked_lun, fn, iocb, 0); | |
4229 | if (rc != 0) | |
4230 | goto out_term; | |
4231 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4232 | ||
4233 | ha->tgt.tgt_ops->put_sess(sess); | |
4234 | return; | |
4235 | ||
4236 | out_term: | |
4237 | qlt_send_term_exchange(vha, NULL, &prm->tm_iocb2, 1); | |
4238 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4239 | if (sess) | |
4240 | ha->tgt.tgt_ops->put_sess(sess); | |
4241 | } | |
4242 | ||
4243 | static void qlt_sess_work_fn(struct work_struct *work) | |
4244 | { | |
4245 | struct qla_tgt *tgt = container_of(work, struct qla_tgt, sess_work); | |
4246 | struct scsi_qla_host *vha = tgt->vha; | |
4247 | unsigned long flags; | |
4248 | ||
4249 | ql_dbg(ql_dbg_tgt_mgt, vha, 0xf000, "Sess work (tgt %p)", tgt); | |
4250 | ||
4251 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
4252 | while (!list_empty(&tgt->sess_works_list)) { | |
4253 | struct qla_tgt_sess_work_param *prm = list_entry( | |
4254 | tgt->sess_works_list.next, typeof(*prm), | |
4255 | sess_works_list_entry); | |
4256 | ||
4257 | /* | |
4258 | * This work can be scheduled on several CPUs at time, so we | |
4259 | * must delete the entry to eliminate double processing | |
4260 | */ | |
4261 | list_del(&prm->sess_works_list_entry); | |
4262 | ||
4263 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
4264 | ||
4265 | switch (prm->type) { | |
4266 | case QLA_TGT_SESS_WORK_ABORT: | |
4267 | qlt_abort_work(tgt, prm); | |
4268 | break; | |
4269 | case QLA_TGT_SESS_WORK_TM: | |
4270 | qlt_tmr_work(tgt, prm); | |
4271 | break; | |
4272 | default: | |
4273 | BUG_ON(1); | |
4274 | break; | |
4275 | } | |
4276 | ||
4277 | spin_lock_irqsave(&tgt->sess_work_lock, flags); | |
4278 | ||
4279 | kfree(prm); | |
4280 | } | |
4281 | spin_unlock_irqrestore(&tgt->sess_work_lock, flags); | |
4282 | } | |
4283 | ||
4284 | /* Must be called under tgt_host_action_mutex */ | |
4285 | int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) | |
4286 | { | |
4287 | struct qla_tgt *tgt; | |
4288 | ||
4289 | if (!QLA_TGT_MODE_ENABLED()) | |
4290 | return 0; | |
4291 | ||
4292 | ql_dbg(ql_dbg_tgt, base_vha, 0xe03b, | |
4293 | "Registering target for host %ld(%p)", base_vha->host_no, ha); | |
4294 | ||
4295 | BUG_ON((ha->tgt.qla_tgt != NULL) || (ha->tgt.tgt_ops != NULL)); | |
4296 | ||
4297 | tgt = kzalloc(sizeof(struct qla_tgt), GFP_KERNEL); | |
4298 | if (!tgt) { | |
4299 | ql_dbg(ql_dbg_tgt, base_vha, 0xe066, | |
4300 | "Unable to allocate struct qla_tgt\n"); | |
4301 | return -ENOMEM; | |
4302 | } | |
4303 | ||
4304 | if (!(base_vha->host->hostt->supported_mode & MODE_TARGET)) | |
4305 | base_vha->host->hostt->supported_mode |= MODE_TARGET; | |
4306 | ||
4307 | tgt->ha = ha; | |
4308 | tgt->vha = base_vha; | |
4309 | init_waitqueue_head(&tgt->waitQ); | |
4310 | INIT_LIST_HEAD(&tgt->sess_list); | |
4311 | INIT_LIST_HEAD(&tgt->del_sess_list); | |
4312 | INIT_DELAYED_WORK(&tgt->sess_del_work, | |
4313 | (void (*)(struct work_struct *))qlt_del_sess_work_fn); | |
4314 | spin_lock_init(&tgt->sess_work_lock); | |
4315 | INIT_WORK(&tgt->sess_work, qlt_sess_work_fn); | |
4316 | INIT_LIST_HEAD(&tgt->sess_works_list); | |
4317 | spin_lock_init(&tgt->srr_lock); | |
4318 | INIT_LIST_HEAD(&tgt->srr_ctio_list); | |
4319 | INIT_LIST_HEAD(&tgt->srr_imm_list); | |
4320 | INIT_WORK(&tgt->srr_work, qlt_handle_srr_work); | |
4321 | atomic_set(&tgt->tgt_global_resets_count, 0); | |
4322 | ||
4323 | ha->tgt.qla_tgt = tgt; | |
4324 | ||
4325 | ql_dbg(ql_dbg_tgt, base_vha, 0xe067, | |
4326 | "qla_target(%d): using 64 Bit PCI addressing", | |
4327 | base_vha->vp_idx); | |
4328 | tgt->tgt_enable_64bit_addr = 1; | |
4329 | /* 3 is reserved */ | |
4330 | tgt->sg_tablesize = QLA_TGT_MAX_SG_24XX(base_vha->req->length - 3); | |
4331 | tgt->datasegs_per_cmd = QLA_TGT_DATASEGS_PER_CMD_24XX; | |
4332 | tgt->datasegs_per_cont = QLA_TGT_DATASEGS_PER_CONT_24XX; | |
4333 | ||
4334 | mutex_lock(&qla_tgt_mutex); | |
4335 | list_add_tail(&tgt->tgt_list_entry, &qla_tgt_glist); | |
4336 | mutex_unlock(&qla_tgt_mutex); | |
4337 | ||
4338 | return 0; | |
4339 | } | |
4340 | ||
4341 | /* Must be called under tgt_host_action_mutex */ | |
4342 | int qlt_remove_target(struct qla_hw_data *ha, struct scsi_qla_host *vha) | |
4343 | { | |
4344 | if (!ha->tgt.qla_tgt) | |
4345 | return 0; | |
4346 | ||
4347 | mutex_lock(&qla_tgt_mutex); | |
4348 | list_del(&ha->tgt.qla_tgt->tgt_list_entry); | |
4349 | mutex_unlock(&qla_tgt_mutex); | |
4350 | ||
4351 | ql_dbg(ql_dbg_tgt, vha, 0xe03c, "Unregistering target for host %ld(%p)", | |
4352 | vha->host_no, ha); | |
4353 | qlt_release(ha->tgt.qla_tgt); | |
4354 | ||
4355 | return 0; | |
4356 | } | |
4357 | ||
4358 | static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn, | |
4359 | unsigned char *b) | |
4360 | { | |
4361 | int i; | |
4362 | ||
4363 | pr_debug("qla2xxx HW vha->node_name: "); | |
4364 | for (i = 0; i < WWN_SIZE; i++) | |
4365 | pr_debug("%02x ", vha->node_name[i]); | |
4366 | pr_debug("\n"); | |
4367 | pr_debug("qla2xxx HW vha->port_name: "); | |
4368 | for (i = 0; i < WWN_SIZE; i++) | |
4369 | pr_debug("%02x ", vha->port_name[i]); | |
4370 | pr_debug("\n"); | |
4371 | ||
4372 | pr_debug("qla2xxx passed configfs WWPN: "); | |
4373 | put_unaligned_be64(wwpn, b); | |
4374 | for (i = 0; i < WWN_SIZE; i++) | |
4375 | pr_debug("%02x ", b[i]); | |
4376 | pr_debug("\n"); | |
4377 | } | |
4378 | ||
4379 | /** | |
4380 | * qla_tgt_lport_register - register lport with external module | |
4381 | * | |
4382 | * @qla_tgt_ops: Pointer for tcm_qla2xxx qla_tgt_ops | |
4383 | * @wwpn: Passwd FC target WWPN | |
4384 | * @callback: lport initialization callback for tcm_qla2xxx code | |
4385 | * @target_lport_ptr: pointer for tcm_qla2xxx specific lport data | |
4386 | */ | |
4387 | int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn, | |
4388 | int (*callback)(struct scsi_qla_host *), void *target_lport_ptr) | |
4389 | { | |
4390 | struct qla_tgt *tgt; | |
4391 | struct scsi_qla_host *vha; | |
4392 | struct qla_hw_data *ha; | |
4393 | struct Scsi_Host *host; | |
4394 | unsigned long flags; | |
4395 | int rc; | |
4396 | u8 b[WWN_SIZE]; | |
4397 | ||
4398 | mutex_lock(&qla_tgt_mutex); | |
4399 | list_for_each_entry(tgt, &qla_tgt_glist, tgt_list_entry) { | |
4400 | vha = tgt->vha; | |
4401 | ha = vha->hw; | |
4402 | ||
4403 | host = vha->host; | |
4404 | if (!host) | |
4405 | continue; | |
4406 | ||
4407 | if (ha->tgt.tgt_ops != NULL) | |
4408 | continue; | |
4409 | ||
4410 | if (!(host->hostt->supported_mode & MODE_TARGET)) | |
4411 | continue; | |
4412 | ||
4413 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4414 | if (host->active_mode & MODE_TARGET) { | |
4415 | pr_debug("MODE_TARGET already active on qla2xxx(%d)\n", | |
4416 | host->host_no); | |
4417 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4418 | continue; | |
4419 | } | |
4420 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4421 | ||
4422 | if (!scsi_host_get(host)) { | |
4423 | ql_dbg(ql_dbg_tgt, vha, 0xe068, | |
4424 | "Unable to scsi_host_get() for" | |
4425 | " qla2xxx scsi_host\n"); | |
4426 | continue; | |
4427 | } | |
4428 | qlt_lport_dump(vha, wwpn, b); | |
4429 | ||
4430 | if (memcmp(vha->port_name, b, WWN_SIZE)) { | |
4431 | scsi_host_put(host); | |
4432 | continue; | |
4433 | } | |
4434 | /* | |
4435 | * Setup passed parameters ahead of invoking callback | |
4436 | */ | |
4437 | ha->tgt.tgt_ops = qla_tgt_ops; | |
4438 | ha->tgt.target_lport_ptr = target_lport_ptr; | |
4439 | rc = (*callback)(vha); | |
4440 | if (rc != 0) { | |
4441 | ha->tgt.tgt_ops = NULL; | |
4442 | ha->tgt.target_lport_ptr = NULL; | |
4443 | } | |
4444 | mutex_unlock(&qla_tgt_mutex); | |
4445 | return rc; | |
4446 | } | |
4447 | mutex_unlock(&qla_tgt_mutex); | |
4448 | ||
4449 | return -ENODEV; | |
4450 | } | |
4451 | EXPORT_SYMBOL(qlt_lport_register); | |
4452 | ||
4453 | /** | |
4454 | * qla_tgt_lport_deregister - Degister lport | |
4455 | * | |
4456 | * @vha: Registered scsi_qla_host pointer | |
4457 | */ | |
4458 | void qlt_lport_deregister(struct scsi_qla_host *vha) | |
4459 | { | |
4460 | struct qla_hw_data *ha = vha->hw; | |
4461 | struct Scsi_Host *sh = vha->host; | |
4462 | /* | |
4463 | * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data | |
4464 | */ | |
4465 | ha->tgt.target_lport_ptr = NULL; | |
4466 | ha->tgt.tgt_ops = NULL; | |
4467 | /* | |
4468 | * Release the Scsi_Host reference for the underlying qla2xxx host | |
4469 | */ | |
4470 | scsi_host_put(sh); | |
4471 | } | |
4472 | EXPORT_SYMBOL(qlt_lport_deregister); | |
4473 | ||
4474 | /* Must be called under HW lock */ | |
4475 | void qlt_set_mode(struct scsi_qla_host *vha) | |
4476 | { | |
4477 | struct qla_hw_data *ha = vha->hw; | |
4478 | ||
4479 | switch (ql2x_ini_mode) { | |
4480 | case QLA2XXX_INI_MODE_DISABLED: | |
4481 | case QLA2XXX_INI_MODE_EXCLUSIVE: | |
4482 | vha->host->active_mode = MODE_TARGET; | |
4483 | break; | |
4484 | case QLA2XXX_INI_MODE_ENABLED: | |
4485 | vha->host->active_mode |= MODE_TARGET; | |
4486 | break; | |
4487 | default: | |
4488 | break; | |
4489 | } | |
4490 | ||
4491 | if (ha->tgt.ini_mode_force_reverse) | |
4492 | qla_reverse_ini_mode(vha); | |
4493 | } | |
4494 | ||
4495 | /* Must be called under HW lock */ | |
4496 | void qlt_clear_mode(struct scsi_qla_host *vha) | |
4497 | { | |
4498 | struct qla_hw_data *ha = vha->hw; | |
4499 | ||
4500 | switch (ql2x_ini_mode) { | |
4501 | case QLA2XXX_INI_MODE_DISABLED: | |
4502 | vha->host->active_mode = MODE_UNKNOWN; | |
4503 | break; | |
4504 | case QLA2XXX_INI_MODE_EXCLUSIVE: | |
4505 | vha->host->active_mode = MODE_INITIATOR; | |
4506 | break; | |
4507 | case QLA2XXX_INI_MODE_ENABLED: | |
4508 | vha->host->active_mode &= ~MODE_TARGET; | |
4509 | break; | |
4510 | default: | |
4511 | break; | |
4512 | } | |
4513 | ||
4514 | if (ha->tgt.ini_mode_force_reverse) | |
4515 | qla_reverse_ini_mode(vha); | |
4516 | } | |
4517 | ||
4518 | /* | |
4519 | * qla_tgt_enable_vha - NO LOCK HELD | |
4520 | * | |
4521 | * host_reset, bring up w/ Target Mode Enabled | |
4522 | */ | |
4523 | void | |
4524 | qlt_enable_vha(struct scsi_qla_host *vha) | |
4525 | { | |
4526 | struct qla_hw_data *ha = vha->hw; | |
4527 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
4528 | unsigned long flags; | |
4529 | ||
4530 | if (!tgt) { | |
4531 | ql_dbg(ql_dbg_tgt, vha, 0xe069, | |
4532 | "Unable to locate qla_tgt pointer from" | |
4533 | " struct qla_hw_data\n"); | |
4534 | dump_stack(); | |
4535 | return; | |
4536 | } | |
4537 | ||
4538 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4539 | tgt->tgt_stopped = 0; | |
4540 | qlt_set_mode(vha); | |
4541 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4542 | ||
4543 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); | |
4544 | qla2xxx_wake_dpc(vha); | |
4545 | qla2x00_wait_for_hba_online(vha); | |
4546 | } | |
4547 | EXPORT_SYMBOL(qlt_enable_vha); | |
4548 | ||
4549 | /* | |
4550 | * qla_tgt_disable_vha - NO LOCK HELD | |
4551 | * | |
4552 | * Disable Target Mode and reset the adapter | |
4553 | */ | |
4554 | void | |
4555 | qlt_disable_vha(struct scsi_qla_host *vha) | |
4556 | { | |
4557 | struct qla_hw_data *ha = vha->hw; | |
4558 | struct qla_tgt *tgt = ha->tgt.qla_tgt; | |
4559 | unsigned long flags; | |
4560 | ||
4561 | if (!tgt) { | |
4562 | ql_dbg(ql_dbg_tgt, vha, 0xe06a, | |
4563 | "Unable to locate qla_tgt pointer from" | |
4564 | " struct qla_hw_data\n"); | |
4565 | dump_stack(); | |
4566 | return; | |
4567 | } | |
4568 | ||
4569 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
4570 | qlt_clear_mode(vha); | |
4571 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
4572 | ||
4573 | set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags); | |
4574 | qla2xxx_wake_dpc(vha); | |
4575 | qla2x00_wait_for_hba_online(vha); | |
4576 | } | |
4577 | ||
4578 | /* | |
4579 | * Called from qla_init.c:qla24xx_vport_create() contex to setup | |
4580 | * the target mode specific struct scsi_qla_host and struct qla_hw_data | |
4581 | * members. | |
4582 | */ | |
4583 | void | |
4584 | qlt_vport_create(struct scsi_qla_host *vha, struct qla_hw_data *ha) | |
4585 | { | |
4586 | if (!qla_tgt_mode_enabled(vha)) | |
4587 | return; | |
4588 | ||
4589 | mutex_init(&ha->tgt.tgt_mutex); | |
4590 | mutex_init(&ha->tgt.tgt_host_action_mutex); | |
4591 | ||
4592 | qlt_clear_mode(vha); | |
4593 | ||
4594 | /* | |
4595 | * NOTE: Currently the value is kept the same for <24xx and | |
4596 | * >=24xx ISPs. If it is necessary to change it, | |
4597 | * the check should be added for specific ISPs, | |
4598 | * assigning the value appropriately. | |
4599 | */ | |
4600 | ha->tgt.atio_q_length = ATIO_ENTRY_CNT_24XX; | |
4601 | } | |
4602 | ||
4603 | void | |
4604 | qlt_rff_id(struct scsi_qla_host *vha, struct ct_sns_req *ct_req) | |
4605 | { | |
4606 | /* | |
4607 | * FC-4 Feature bit 0 indicates target functionality to the name server. | |
4608 | */ | |
4609 | if (qla_tgt_mode_enabled(vha)) { | |
4610 | if (qla_ini_mode_enabled(vha)) | |
4611 | ct_req->req.rff_id.fc4_feature = BIT_0 | BIT_1; | |
4612 | else | |
4613 | ct_req->req.rff_id.fc4_feature = BIT_0; | |
4614 | } else if (qla_ini_mode_enabled(vha)) { | |
4615 | ct_req->req.rff_id.fc4_feature = BIT_1; | |
4616 | } | |
4617 | } | |
4618 | ||
4619 | /* | |
4620 | * qlt_init_atio_q_entries() - Initializes ATIO queue entries. | |
4621 | * @ha: HA context | |
4622 | * | |
4623 | * Beginning of ATIO ring has initialization control block already built | |
4624 | * by nvram config routine. | |
4625 | * | |
4626 | * Returns 0 on success. | |
4627 | */ | |
4628 | void | |
4629 | qlt_init_atio_q_entries(struct scsi_qla_host *vha) | |
4630 | { | |
4631 | struct qla_hw_data *ha = vha->hw; | |
4632 | uint16_t cnt; | |
4633 | struct atio_from_isp *pkt = (struct atio_from_isp *)ha->tgt.atio_ring; | |
4634 | ||
4635 | if (!qla_tgt_mode_enabled(vha)) | |
4636 | return; | |
4637 | ||
4638 | for (cnt = 0; cnt < ha->tgt.atio_q_length; cnt++) { | |
4639 | pkt->u.raw.signature = ATIO_PROCESSED; | |
4640 | pkt++; | |
4641 | } | |
4642 | ||
4643 | } | |
4644 | ||
4645 | /* | |
4646 | * qlt_24xx_process_atio_queue() - Process ATIO queue entries. | |
4647 | * @ha: SCSI driver HA context | |
4648 | */ | |
4649 | void | |
4650 | qlt_24xx_process_atio_queue(struct scsi_qla_host *vha) | |
4651 | { | |
4652 | struct qla_hw_data *ha = vha->hw; | |
4653 | struct device_reg_24xx __iomem *reg = &ha->iobase->isp24; | |
4654 | struct atio_from_isp *pkt; | |
4655 | int cnt, i; | |
4656 | ||
4657 | if (!vha->flags.online) | |
4658 | return; | |
4659 | ||
4660 | while (ha->tgt.atio_ring_ptr->signature != ATIO_PROCESSED) { | |
4661 | pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; | |
4662 | cnt = pkt->u.raw.entry_count; | |
4663 | ||
4664 | qlt_24xx_atio_pkt_all_vps(vha, (struct atio_from_isp *)pkt); | |
4665 | ||
4666 | for (i = 0; i < cnt; i++) { | |
4667 | ha->tgt.atio_ring_index++; | |
4668 | if (ha->tgt.atio_ring_index == ha->tgt.atio_q_length) { | |
4669 | ha->tgt.atio_ring_index = 0; | |
4670 | ha->tgt.atio_ring_ptr = ha->tgt.atio_ring; | |
4671 | } else | |
4672 | ha->tgt.atio_ring_ptr++; | |
4673 | ||
4674 | pkt->u.raw.signature = ATIO_PROCESSED; | |
4675 | pkt = (struct atio_from_isp *)ha->tgt.atio_ring_ptr; | |
4676 | } | |
4677 | wmb(); | |
4678 | } | |
4679 | ||
4680 | /* Adjust ring index */ | |
4681 | WRT_REG_DWORD(®->atio_q_out, ha->tgt.atio_ring_index); | |
4682 | } | |
4683 | ||
4684 | void | |
4685 | qlt_24xx_config_rings(struct scsi_qla_host *vha, device_reg_t __iomem *reg) | |
4686 | { | |
4687 | struct qla_hw_data *ha = vha->hw; | |
4688 | ||
4689 | /* FIXME: atio_q in/out for ha->mqenable=1..? */ | |
4690 | if (ha->mqenable) { | |
4691 | #if 0 | |
4692 | WRT_REG_DWORD(®->isp25mq.atio_q_in, 0); | |
4693 | WRT_REG_DWORD(®->isp25mq.atio_q_out, 0); | |
4694 | RD_REG_DWORD(®->isp25mq.atio_q_out); | |
4695 | #endif | |
4696 | } else { | |
4697 | /* Setup APTIO registers for target mode */ | |
4698 | WRT_REG_DWORD(®->isp24.atio_q_in, 0); | |
4699 | WRT_REG_DWORD(®->isp24.atio_q_out, 0); | |
4700 | RD_REG_DWORD(®->isp24.atio_q_out); | |
4701 | } | |
4702 | } | |
4703 | ||
4704 | void | |
4705 | qlt_24xx_config_nvram_stage1(struct scsi_qla_host *vha, struct nvram_24xx *nv) | |
4706 | { | |
4707 | struct qla_hw_data *ha = vha->hw; | |
4708 | ||
4709 | if (qla_tgt_mode_enabled(vha)) { | |
4710 | if (!ha->tgt.saved_set) { | |
4711 | /* We save only once */ | |
4712 | ha->tgt.saved_exchange_count = nv->exchange_count; | |
4713 | ha->tgt.saved_firmware_options_1 = | |
4714 | nv->firmware_options_1; | |
4715 | ha->tgt.saved_firmware_options_2 = | |
4716 | nv->firmware_options_2; | |
4717 | ha->tgt.saved_firmware_options_3 = | |
4718 | nv->firmware_options_3; | |
4719 | ha->tgt.saved_set = 1; | |
4720 | } | |
4721 | ||
4722 | nv->exchange_count = __constant_cpu_to_le16(0xFFFF); | |
4723 | ||
4724 | /* Enable target mode */ | |
4725 | nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_4); | |
4726 | ||
4727 | /* Disable ini mode, if requested */ | |
4728 | if (!qla_ini_mode_enabled(vha)) | |
4729 | nv->firmware_options_1 |= __constant_cpu_to_le32(BIT_5); | |
4730 | ||
4731 | /* Disable Full Login after LIP */ | |
4732 | nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_13); | |
4733 | /* Enable initial LIP */ | |
4734 | nv->firmware_options_1 &= __constant_cpu_to_le32(~BIT_9); | |
4735 | /* Enable FC tapes support */ | |
4736 | nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_12); | |
4737 | /* Disable Full Login after LIP */ | |
4738 | nv->host_p &= __constant_cpu_to_le32(~BIT_10); | |
4739 | /* Enable target PRLI control */ | |
4740 | nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_14); | |
4741 | } else { | |
4742 | if (ha->tgt.saved_set) { | |
4743 | nv->exchange_count = ha->tgt.saved_exchange_count; | |
4744 | nv->firmware_options_1 = | |
4745 | ha->tgt.saved_firmware_options_1; | |
4746 | nv->firmware_options_2 = | |
4747 | ha->tgt.saved_firmware_options_2; | |
4748 | nv->firmware_options_3 = | |
4749 | ha->tgt.saved_firmware_options_3; | |
4750 | } | |
4751 | return; | |
4752 | } | |
4753 | ||
4754 | /* out-of-order frames reassembly */ | |
4755 | nv->firmware_options_3 |= BIT_6|BIT_9; | |
4756 | ||
4757 | if (ha->tgt.enable_class_2) { | |
4758 | if (vha->flags.init_done) | |
4759 | fc_host_supported_classes(vha->host) = | |
4760 | FC_COS_CLASS2 | FC_COS_CLASS3; | |
4761 | ||
4762 | nv->firmware_options_2 |= __constant_cpu_to_le32(BIT_8); | |
4763 | } else { | |
4764 | if (vha->flags.init_done) | |
4765 | fc_host_supported_classes(vha->host) = FC_COS_CLASS3; | |
4766 | ||
4767 | nv->firmware_options_2 &= ~__constant_cpu_to_le32(BIT_8); | |
4768 | } | |
4769 | } | |
4770 | ||
4771 | void | |
4772 | qlt_24xx_config_nvram_stage2(struct scsi_qla_host *vha, | |
4773 | struct init_cb_24xx *icb) | |
4774 | { | |
4775 | struct qla_hw_data *ha = vha->hw; | |
4776 | ||
4777 | if (ha->tgt.node_name_set) { | |
4778 | memcpy(icb->node_name, ha->tgt.tgt_node_name, WWN_SIZE); | |
4779 | icb->firmware_options_1 |= __constant_cpu_to_le32(BIT_14); | |
4780 | } | |
4781 | } | |
4782 | ||
4783 | int | |
4784 | qlt_24xx_process_response_error(struct scsi_qla_host *vha, | |
4785 | struct sts_entry_24xx *pkt) | |
4786 | { | |
4787 | switch (pkt->entry_type) { | |
4788 | case ABTS_RECV_24XX: | |
4789 | case ABTS_RESP_24XX: | |
4790 | case CTIO_TYPE7: | |
4791 | case NOTIFY_ACK_TYPE: | |
4792 | return 1; | |
4793 | default: | |
4794 | return 0; | |
4795 | } | |
4796 | } | |
4797 | ||
4798 | void | |
4799 | qlt_modify_vp_config(struct scsi_qla_host *vha, | |
4800 | struct vp_config_entry_24xx *vpmod) | |
4801 | { | |
4802 | if (qla_tgt_mode_enabled(vha)) | |
4803 | vpmod->options_idx1 &= ~BIT_5; | |
4804 | /* Disable ini mode, if requested */ | |
4805 | if (!qla_ini_mode_enabled(vha)) | |
4806 | vpmod->options_idx1 &= ~BIT_4; | |
4807 | } | |
4808 | ||
4809 | void | |
4810 | qlt_probe_one_stage1(struct scsi_qla_host *base_vha, struct qla_hw_data *ha) | |
4811 | { | |
4812 | if (!QLA_TGT_MODE_ENABLED()) | |
4813 | return; | |
4814 | ||
4815 | mutex_init(&ha->tgt.tgt_mutex); | |
4816 | mutex_init(&ha->tgt.tgt_host_action_mutex); | |
4817 | qlt_clear_mode(base_vha); | |
4818 | } | |
4819 | ||
4820 | int | |
4821 | qlt_mem_alloc(struct qla_hw_data *ha) | |
4822 | { | |
4823 | if (!QLA_TGT_MODE_ENABLED()) | |
4824 | return 0; | |
4825 | ||
4826 | ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * | |
4827 | MAX_MULTI_ID_FABRIC, GFP_KERNEL); | |
4828 | if (!ha->tgt.tgt_vp_map) | |
4829 | return -ENOMEM; | |
4830 | ||
4831 | ha->tgt.atio_ring = dma_alloc_coherent(&ha->pdev->dev, | |
4832 | (ha->tgt.atio_q_length + 1) * sizeof(struct atio_from_isp), | |
4833 | &ha->tgt.atio_dma, GFP_KERNEL); | |
4834 | if (!ha->tgt.atio_ring) { | |
4835 | kfree(ha->tgt.tgt_vp_map); | |
4836 | return -ENOMEM; | |
4837 | } | |
4838 | return 0; | |
4839 | } | |
4840 | ||
4841 | void | |
4842 | qlt_mem_free(struct qla_hw_data *ha) | |
4843 | { | |
4844 | if (!QLA_TGT_MODE_ENABLED()) | |
4845 | return; | |
4846 | ||
4847 | if (ha->tgt.atio_ring) { | |
4848 | dma_free_coherent(&ha->pdev->dev, (ha->tgt.atio_q_length + 1) * | |
4849 | sizeof(struct atio_from_isp), ha->tgt.atio_ring, | |
4850 | ha->tgt.atio_dma); | |
4851 | } | |
4852 | kfree(ha->tgt.tgt_vp_map); | |
4853 | } | |
4854 | ||
4855 | /* vport_slock to be held by the caller */ | |
4856 | void | |
4857 | qlt_update_vp_map(struct scsi_qla_host *vha, int cmd) | |
4858 | { | |
4859 | if (!QLA_TGT_MODE_ENABLED()) | |
4860 | return; | |
4861 | ||
4862 | switch (cmd) { | |
4863 | case SET_VP_IDX: | |
4864 | vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = vha; | |
4865 | break; | |
4866 | case SET_AL_PA: | |
4867 | vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = vha->vp_idx; | |
4868 | break; | |
4869 | case RESET_VP_IDX: | |
4870 | vha->hw->tgt.tgt_vp_map[vha->vp_idx].vha = NULL; | |
4871 | break; | |
4872 | case RESET_AL_PA: | |
4873 | vha->hw->tgt.tgt_vp_map[vha->d_id.b.al_pa].idx = 0; | |
4874 | break; | |
4875 | } | |
4876 | } | |
4877 | ||
4878 | static int __init qlt_parse_ini_mode(void) | |
4879 | { | |
4880 | if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_EXCLUSIVE) == 0) | |
4881 | ql2x_ini_mode = QLA2XXX_INI_MODE_EXCLUSIVE; | |
4882 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_DISABLED) == 0) | |
4883 | ql2x_ini_mode = QLA2XXX_INI_MODE_DISABLED; | |
4884 | else if (strcasecmp(qlini_mode, QLA2XXX_INI_MODE_STR_ENABLED) == 0) | |
4885 | ql2x_ini_mode = QLA2XXX_INI_MODE_ENABLED; | |
4886 | else | |
4887 | return false; | |
4888 | ||
4889 | return true; | |
4890 | } | |
4891 | ||
4892 | int __init qlt_init(void) | |
4893 | { | |
4894 | int ret; | |
4895 | ||
4896 | if (!qlt_parse_ini_mode()) { | |
4897 | ql_log(ql_log_fatal, NULL, 0xe06b, | |
4898 | "qlt_parse_ini_mode() failed\n"); | |
4899 | return -EINVAL; | |
4900 | } | |
4901 | ||
4902 | if (!QLA_TGT_MODE_ENABLED()) | |
4903 | return 0; | |
4904 | ||
4905 | qla_tgt_cmd_cachep = kmem_cache_create("qla_tgt_cmd_cachep", | |
4906 | sizeof(struct qla_tgt_cmd), __alignof__(struct qla_tgt_cmd), 0, | |
4907 | NULL); | |
4908 | if (!qla_tgt_cmd_cachep) { | |
4909 | ql_log(ql_log_fatal, NULL, 0xe06c, | |
4910 | "kmem_cache_create for qla_tgt_cmd_cachep failed\n"); | |
4911 | return -ENOMEM; | |
4912 | } | |
4913 | ||
4914 | qla_tgt_mgmt_cmd_cachep = kmem_cache_create("qla_tgt_mgmt_cmd_cachep", | |
4915 | sizeof(struct qla_tgt_mgmt_cmd), __alignof__(struct | |
4916 | qla_tgt_mgmt_cmd), 0, NULL); | |
4917 | if (!qla_tgt_mgmt_cmd_cachep) { | |
4918 | ql_log(ql_log_fatal, NULL, 0xe06d, | |
4919 | "kmem_cache_create for qla_tgt_mgmt_cmd_cachep failed\n"); | |
4920 | ret = -ENOMEM; | |
4921 | goto out; | |
4922 | } | |
4923 | ||
4924 | qla_tgt_mgmt_cmd_mempool = mempool_create(25, mempool_alloc_slab, | |
4925 | mempool_free_slab, qla_tgt_mgmt_cmd_cachep); | |
4926 | if (!qla_tgt_mgmt_cmd_mempool) { | |
4927 | ql_log(ql_log_fatal, NULL, 0xe06e, | |
4928 | "mempool_create for qla_tgt_mgmt_cmd_mempool failed\n"); | |
4929 | ret = -ENOMEM; | |
4930 | goto out_mgmt_cmd_cachep; | |
4931 | } | |
4932 | ||
4933 | qla_tgt_wq = alloc_workqueue("qla_tgt_wq", 0, 0); | |
4934 | if (!qla_tgt_wq) { | |
4935 | ql_log(ql_log_fatal, NULL, 0xe06f, | |
4936 | "alloc_workqueue for qla_tgt_wq failed\n"); | |
4937 | ret = -ENOMEM; | |
4938 | goto out_cmd_mempool; | |
4939 | } | |
4940 | /* | |
4941 | * Return 1 to signal that initiator-mode is being disabled | |
4942 | */ | |
4943 | return (ql2x_ini_mode == QLA2XXX_INI_MODE_DISABLED) ? 1 : 0; | |
4944 | ||
4945 | out_cmd_mempool: | |
4946 | mempool_destroy(qla_tgt_mgmt_cmd_mempool); | |
4947 | out_mgmt_cmd_cachep: | |
4948 | kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); | |
4949 | out: | |
4950 | kmem_cache_destroy(qla_tgt_cmd_cachep); | |
4951 | return ret; | |
4952 | } | |
4953 | ||
4954 | void qlt_exit(void) | |
4955 | { | |
4956 | if (!QLA_TGT_MODE_ENABLED()) | |
4957 | return; | |
4958 | ||
4959 | destroy_workqueue(qla_tgt_wq); | |
4960 | mempool_destroy(qla_tgt_mgmt_cmd_mempool); | |
4961 | kmem_cache_destroy(qla_tgt_mgmt_cmd_cachep); | |
4962 | kmem_cache_destroy(qla_tgt_cmd_cachep); | |
4963 | } |