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Merge remote-tracking branch 'spi/fix/pxa' into spi-linus
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / lpfc / lpfc_scsi.c
CommitLineData
d85296cf 1/*******************************************************************
dea3101e 2 * This file is part of the Emulex Linux Device Driver for *
c44ce173 3 * Fibre Channel Host Bus Adapters. *
acd6859b 4 * Copyright (C) 2004-2012 Emulex. All rights reserved. *
c44ce173 5 * EMULEX and SLI are trademarks of Emulex. *
dea3101e 6 * www.emulex.com *
c44ce173 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
dea3101e
JB		 8 * *
9 * This program is free software; you can redistribute it and/or *
c44ce173
JSEC		 10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
dea3101e 20 *******************************************************************/
dea3101e 21#include <linux/pci.h>
5a0e3ad6 22#include <linux/slab.h>
dea3101e 23#include <linux/interrupt.h>
09703660 24#include <linux/export.h>
a90f5684 25#include <linux/delay.h>
e2a0a9d6 26#include <asm/unaligned.h>
737d4248
JS		 27#include <linux/crc-t10dif.h>
28#include <net/checksum.h>
dea3101e
JB		 29
30#include <scsi/scsi.h>
31#include <scsi/scsi_device.h>
e2a0a9d6 32#include <scsi/scsi_eh.h>
dea3101e
JB		 33#include <scsi/scsi_host.h>
34#include <scsi/scsi_tcq.h>
35#include <scsi/scsi_transport_fc.h>
36
37#include "lpfc_version.h"
da0436e9 38#include "lpfc_hw4.h"
dea3101e
JB		 39#include "lpfc_hw.h"
40#include "lpfc_sli.h"
da0436e9 41#include "lpfc_sli4.h"
ea2151b4 42#include "lpfc_nl.h"
dea3101e 43#include "lpfc_disc.h"
dea3101e 44#include "lpfc.h"
9a6b09c0 45#include "lpfc_scsi.h"
dea3101e
JB		 46#include "lpfc_logmsg.h"
47#include "lpfc_crtn.h"
92d7f7b0 48#include "lpfc_vport.h"
dea3101e
JB		 49
50#define LPFC_RESET_WAIT 2
51#define LPFC_ABORT_WAIT 2
52
737d4248 53int _dump_buf_done = 1;
e2a0a9d6
JS		 54
55static char *dif_op_str[] = {
9a6b09c0
JS		 56 "PROT_NORMAL",
57 "PROT_READ_INSERT",
58 "PROT_WRITE_STRIP",
59 "PROT_READ_STRIP",
60 "PROT_WRITE_INSERT",
61 "PROT_READ_PASS",
62 "PROT_WRITE_PASS",
63};
64
f9bb2da1
JS		 65struct scsi_dif_tuple {
66 __be16 guard_tag; /* Checksum */
67 __be16 app_tag; /* Opaque storage */
68 __be32 ref_tag; /* Target LBA or indirect LBA */
69};
70
a6887e28
JS		 71#if !defined(SCSI_PROT_GUARD_CHECK) || !defined(SCSI_PROT_REF_CHECK)
72#define scsi_prot_flagged(sc, flg) sc
73#endif
74
da0436e9
JS		 75static void
76lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
1c6f4ef5
JS		 77static void
78lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
e2a0a9d6
JS		 79
80static void
6a9c52cf 81lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
e2a0a9d6
JS		 82{
83 void *src, *dst;
84 struct scatterlist *sgde = scsi_sglist(cmnd);
85
86 if (!_dump_buf_data) {
6a9c52cf
JS		 87 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
88 "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
e2a0a9d6
JS		 89 __func__);
90 return;
91 }
92
93
94 if (!sgde) {
6a9c52cf
JS		 95 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
96 "9051 BLKGRD: ERROR: data scatterlist is null\n");
e2a0a9d6
JS		 97 return;
98 }
99
100 dst = (void *) _dump_buf_data;
101 while (sgde) {
102 src = sg_virt(sgde);
103 memcpy(dst, src, sgde->length);
104 dst += sgde->length;
105 sgde = sg_next(sgde);
106 }
107}
108
109static void
6a9c52cf 110lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
e2a0a9d6
JS		 111{
112 void *src, *dst;
113 struct scatterlist *sgde = scsi_prot_sglist(cmnd);
114
115 if (!_dump_buf_dif) {
6a9c52cf
JS		 116 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
117 "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
e2a0a9d6
JS		 118 __func__);
119 return;
120 }
121
122 if (!sgde) {
6a9c52cf
JS		 123 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
124 "9053 BLKGRD: ERROR: prot scatterlist is null\n");
e2a0a9d6
JS		 125 return;
126 }
127
128 dst = _dump_buf_dif;
129 while (sgde) {
130 src = sg_virt(sgde);
131 memcpy(dst, src, sgde->length);
132 dst += sgde->length;
133 sgde = sg_next(sgde);
134 }
135}
136
f1126688
JS		 137/**
138 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
139 * @phba: Pointer to HBA object.
140 * @lpfc_cmd: lpfc scsi command object pointer.
141 *
142 * This function is called from the lpfc_prep_task_mgmt_cmd function to
143 * set the last bit in the response sge entry.
144 **/
145static void
146lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
147 struct lpfc_scsi_buf *lpfc_cmd)
148{
149 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
150 if (sgl) {
151 sgl += 1;
152 sgl->word2 = le32_to_cpu(sgl->word2);
153 bf_set(lpfc_sli4_sge_last, sgl, 1);
154 sgl->word2 = cpu_to_le32(sgl->word2);
155 }
156}
157
ea2151b4 158/**
3621a710 159 * lpfc_update_stats - Update statistical data for the command completion
ea2151b4
JS		 160 * @phba: Pointer to HBA object.
161 * @lpfc_cmd: lpfc scsi command object pointer.
162 *
163 * This function is called when there is a command completion and this
164 * function updates the statistical data for the command completion.
165 **/
166static void
167lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
168{
169 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
170 struct lpfc_nodelist *pnode = rdata->pnode;
171 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
172 unsigned long flags;
173 struct Scsi_Host *shost = cmd->device->host;
174 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
175 unsigned long latency;
176 int i;
177
178 if (cmd->result)
179 return;
180
9f1e1b50
JS		 181 latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
182
ea2151b4
JS		 183 spin_lock_irqsave(shost->host_lock, flags);
184 if (!vport->stat_data_enabled ||
185 vport->stat_data_blocked ||
5989b8d4 186 !pnode ||
ea2151b4
JS		 187 !pnode->lat_data ||
188 (phba->bucket_type == LPFC_NO_BUCKET)) {
189 spin_unlock_irqrestore(shost->host_lock, flags);
190 return;
191 }
ea2151b4
JS		 192
193 if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
194 i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
195 phba->bucket_step;
9f1e1b50
JS		 196 /* check array subscript bounds */
197 if (i < 0)
198 i = 0;
199 else if (i >= LPFC_MAX_BUCKET_COUNT)
200 i = LPFC_MAX_BUCKET_COUNT - 1;
ea2151b4
JS		 201 } else {
202 for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
203 if (latency <= (phba->bucket_base +
204 ((1<<i)*phba->bucket_step)))
205 break;
206 }
207
208 pnode->lat_data[i].cmd_count++;
209 spin_unlock_irqrestore(shost->host_lock, flags);
210}
211
ea2151b4 212/**
3621a710 213 * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
ea2151b4
JS		 214 * @phba: Pointer to HBA context object.
215 * @vport: Pointer to vport object.
216 * @ndlp: Pointer to FC node associated with the target.
217 * @lun: Lun number of the scsi device.
218 * @old_val: Old value of the queue depth.
219 * @new_val: New value of the queue depth.
220 *
221 * This function sends an event to the mgmt application indicating
222 * there is a change in the scsi device queue depth.
223 **/
224static void
225lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba,
226 struct lpfc_vport *vport,
227 struct lpfc_nodelist *ndlp,
228 uint32_t lun,
229 uint32_t old_val,
230 uint32_t new_val)
231{
232 struct lpfc_fast_path_event *fast_path_evt;
233 unsigned long flags;
234
235 fast_path_evt = lpfc_alloc_fast_evt(phba);
236 if (!fast_path_evt)
237 return;
238
239 fast_path_evt->un.queue_depth_evt.scsi_event.event_type =
240 FC_REG_SCSI_EVENT;
241 fast_path_evt->un.queue_depth_evt.scsi_event.subcategory =
242 LPFC_EVENT_VARQUEDEPTH;
243
244 /* Report all luns with change in queue depth */
245 fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun;
246 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
247 memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn,
248 &ndlp->nlp_portname, sizeof(struct lpfc_name));
249 memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn,
250 &ndlp->nlp_nodename, sizeof(struct lpfc_name));
251 }
252
253 fast_path_evt->un.queue_depth_evt.oldval = old_val;
254 fast_path_evt->un.queue_depth_evt.newval = new_val;
255 fast_path_evt->vport = vport;
256
257 fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
258 spin_lock_irqsave(&phba->hbalock, flags);
259 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
260 spin_unlock_irqrestore(&phba->hbalock, flags);
261 lpfc_worker_wake_up(phba);
262
263 return;
264}
265
5ffc266e
JS		 266/**
267 * lpfc_change_queue_depth - Alter scsi device queue depth
268 * @sdev: Pointer the scsi device on which to change the queue depth.
269 * @qdepth: New queue depth to set the sdev to.
270 * @reason: The reason for the queue depth change.
271 *
272 * This function is called by the midlayer and the LLD to alter the queue
273 * depth for a scsi device. This function sets the queue depth to the new
274 * value and sends an event out to log the queue depth change.
275 **/
276int
277lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
278{
279 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
280 struct lpfc_hba *phba = vport->phba;
281 struct lpfc_rport_data *rdata;
282 unsigned long new_queue_depth, old_queue_depth;
283
284 old_queue_depth = sdev->queue_depth;
285 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
286 new_queue_depth = sdev->queue_depth;
287 rdata = sdev->hostdata;
288 if (rdata)
289 lpfc_send_sdev_queuedepth_change_event(phba, vport,
290 rdata->pnode, sdev->lun,
291 old_queue_depth,
292 new_queue_depth);
293 return sdev->queue_depth;
294}
295
fe8f7f9c
JS		 296/**
297 * lpfc_change_queue_type() - Change a device's scsi tag queuing type
298 * @sdev: Pointer the scsi device whose queue depth is to change
299 * @tag_type: Identifier for queue tag type
300 */
301static int
302lpfc_change_queue_type(struct scsi_device *sdev, int tag_type)
303{
304 if (sdev->tagged_supported) {
305 scsi_set_tag_type(sdev, tag_type);
306 if (tag_type)
307 scsi_activate_tcq(sdev, sdev->queue_depth);
308 else
309 scsi_deactivate_tcq(sdev, sdev->queue_depth);
310 } else
311 tag_type = 0;
312
313 return tag_type;
314}
315
9bad7671 316/**
3621a710 317 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
9bad7671
JS		 318 * @phba: The Hba for which this call is being executed.
319 *
320 * This routine is called when there is resource error in driver or firmware.
321 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
322 * posts at most 1 event each second. This routine wakes up worker thread of
323 * @phba to process WORKER_RAM_DOWN_EVENT event.
324 *
325 * This routine should be called with no lock held.
326 **/
92d7f7b0 327void
eaf15d5b 328lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
92d7f7b0
JS		 329{
330 unsigned long flags;
5e9d9b82 331 uint32_t evt_posted;
92d7f7b0
JS		 332
333 spin_lock_irqsave(&phba->hbalock, flags);
334 atomic_inc(&phba->num_rsrc_err);
335 phba->last_rsrc_error_time = jiffies;
336
337 if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) {
338 spin_unlock_irqrestore(&phba->hbalock, flags);
339 return;
340 }
341
342 phba->last_ramp_down_time = jiffies;
343
344 spin_unlock_irqrestore(&phba->hbalock, flags);
345
346 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
5e9d9b82
JS		 347 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
348 if (!evt_posted)
92d7f7b0 349 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
92d7f7b0
JS		 350 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
351
5e9d9b82
JS		 352 if (!evt_posted)
353 lpfc_worker_wake_up(phba);
92d7f7b0
JS		 354 return;
355}
356
9bad7671 357/**
3621a710 358 * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread
9bad7671
JS		 359 * @phba: The Hba for which this call is being executed.
360 *
361 * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine
362 * post at most 1 event every 5 minute after last_ramp_up_time or
363 * last_rsrc_error_time. This routine wakes up worker thread of @phba
364 * to process WORKER_RAM_DOWN_EVENT event.
365 *
366 * This routine should be called with no lock held.
367 **/
92d7f7b0 368static inline void
3de2a653 369lpfc_rampup_queue_depth(struct lpfc_vport *vport,
a257bf90 370 uint32_t queue_depth)
92d7f7b0
JS		 371{
372 unsigned long flags;
3de2a653 373 struct lpfc_hba *phba = vport->phba;
5e9d9b82 374 uint32_t evt_posted;
92d7f7b0
JS		 375 atomic_inc(&phba->num_cmd_success);
376
a257bf90 377 if (vport->cfg_lun_queue_depth <= queue_depth)
92d7f7b0 378 return;
92d7f7b0 379 spin_lock_irqsave(&phba->hbalock, flags);
5ffc266e
JS		 380 if (time_before(jiffies,
381 phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) ||
382 time_before(jiffies,
383 phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) {
92d7f7b0
JS		 384 spin_unlock_irqrestore(&phba->hbalock, flags);
385 return;
386 }
92d7f7b0
JS		 387 phba->last_ramp_up_time = jiffies;
388 spin_unlock_irqrestore(&phba->hbalock, flags);
389
390 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
5e9d9b82
JS		 391 evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE;
392 if (!evt_posted)
92d7f7b0 393 phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE;
92d7f7b0
JS		 394 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
395
5e9d9b82
JS		 396 if (!evt_posted)
397 lpfc_worker_wake_up(phba);
398 return;
92d7f7b0
JS		 399}
400
9bad7671 401/**
3621a710 402 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
9bad7671
JS		 403 * @phba: The Hba for which this call is being executed.
404 *
405 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
406 * thread.This routine reduces queue depth for all scsi device on each vport
407 * associated with @phba.
408 **/
92d7f7b0
JS		 409void
410lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
411{
549e55cd
JS		 412 struct lpfc_vport **vports;
413 struct Scsi_Host *shost;
92d7f7b0 414 struct scsi_device *sdev;
5ffc266e 415 unsigned long new_queue_depth;
92d7f7b0 416 unsigned long num_rsrc_err, num_cmd_success;
549e55cd 417 int i;
92d7f7b0
JS		 418
419 num_rsrc_err = atomic_read(&phba->num_rsrc_err);
420 num_cmd_success = atomic_read(&phba->num_cmd_success);
421
75ad83a4
JS		 422 /*
423 * The error and success command counters are global per
424 * driver instance. If another handler has already
425 * operated on this error event, just exit.
426 */
427 if (num_rsrc_err == 0)
428 return;
429
549e55cd
JS		 430 vports = lpfc_create_vport_work_array(phba);
431 if (vports != NULL)
21e9a0a5 432 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
549e55cd
JS		 433 shost = lpfc_shost_from_vport(vports[i]);
434 shost_for_each_device(sdev, shost) {
92d7f7b0 435 new_queue_depth =
549e55cd
JS		 436 sdev->queue_depth * num_rsrc_err /
437 (num_rsrc_err + num_cmd_success);
438 if (!new_queue_depth)
439 new_queue_depth = sdev->queue_depth - 1;
440 else
441 new_queue_depth = sdev->queue_depth -
442 new_queue_depth;
5ffc266e
JS		 443 lpfc_change_queue_depth(sdev, new_queue_depth,
444 SCSI_QDEPTH_DEFAULT);
549e55cd 445 }
92d7f7b0 446 }
09372820 447 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0
JS		 448 atomic_set(&phba->num_rsrc_err, 0);
449 atomic_set(&phba->num_cmd_success, 0);
450}
451
9bad7671 452/**
3621a710 453 * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler
9bad7671
JS		 454 * @phba: The Hba for which this call is being executed.
455 *
456 * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker
457 * thread.This routine increases queue depth for all scsi device on each vport
458 * associated with @phba by 1. This routine also sets @phba num_rsrc_err and
459 * num_cmd_success to zero.
460 **/
92d7f7b0
JS		 461void
462lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
463{
549e55cd
JS		 464 struct lpfc_vport **vports;
465 struct Scsi_Host *shost;
92d7f7b0 466 struct scsi_device *sdev;
549e55cd
JS		 467 int i;
468
469 vports = lpfc_create_vport_work_array(phba);
470 if (vports != NULL)
21e9a0a5 471 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
549e55cd
JS		 472 shost = lpfc_shost_from_vport(vports[i]);
473 shost_for_each_device(sdev, shost) {
97eab634
JS		 474 if (vports[i]->cfg_lun_queue_depth <=
475 sdev->queue_depth)
476 continue;
5ffc266e
JS		 477 lpfc_change_queue_depth(sdev,
478 sdev->queue_depth+1,
479 SCSI_QDEPTH_RAMP_UP);
549e55cd 480 }
92d7f7b0 481 }
09372820 482 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0
JS		 483 atomic_set(&phba->num_rsrc_err, 0);
484 atomic_set(&phba->num_cmd_success, 0);
485}
486
a8e497d5 487/**
3621a710 488 * lpfc_scsi_dev_block - set all scsi hosts to block state
a8e497d5
JS		 489 * @phba: Pointer to HBA context object.
490 *
491 * This function walks vport list and set each SCSI host to block state
492 * by invoking fc_remote_port_delete() routine. This function is invoked
493 * with EEH when device's PCI slot has been permanently disabled.
494 **/
495void
496lpfc_scsi_dev_block(struct lpfc_hba *phba)
497{
498 struct lpfc_vport **vports;
499 struct Scsi_Host *shost;
500 struct scsi_device *sdev;
501 struct fc_rport *rport;
502 int i;
503
504 vports = lpfc_create_vport_work_array(phba);
505 if (vports != NULL)
21e9a0a5 506 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
a8e497d5
JS		 507 shost = lpfc_shost_from_vport(vports[i]);
508 shost_for_each_device(sdev, shost) {
509 rport = starget_to_rport(scsi_target(sdev));
510 fc_remote_port_delete(rport);
511 }
512 }
513 lpfc_destroy_vport_work_array(phba, vports);
514}
515
9bad7671 516/**
3772a991 517 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
9bad7671 518 * @vport: The virtual port for which this call being executed.
3772a991 519 * @num_to_allocate: The requested number of buffers to allocate.
9bad7671 520 *
3772a991
JS		 521 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
522 * the scsi buffer contains all the necessary information needed to initiate
523 * a SCSI I/O. The non-DMAable buffer region contains information to build
524 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
525 * and the initial BPL. In addition to allocating memory, the FCP CMND and
526 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
9bad7671
JS		 527 *
528 * Return codes:
3772a991
JS		 529 * int - number of scsi buffers that were allocated.
530 * 0 = failure, less than num_to_alloc is a partial failure.
9bad7671 531 **/
3772a991
JS		 532static int
533lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
dea3101e 534{
2e0fef85 535 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 536 struct lpfc_scsi_buf *psb;
537 struct ulp_bde64 *bpl;
538 IOCB_t *iocb;
34b02dcd
JS		 539 dma_addr_t pdma_phys_fcp_cmd;
540 dma_addr_t pdma_phys_fcp_rsp;
541 dma_addr_t pdma_phys_bpl;
604a3e30 542 uint16_t iotag;
96f7077f
JS		 543 int bcnt, bpl_size;
544
545 bpl_size = phba->cfg_sg_dma_buf_size -
546 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
547
548 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
549 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
550 num_to_alloc, phba->cfg_sg_dma_buf_size,
551 (int)sizeof(struct fcp_cmnd),
552 (int)sizeof(struct fcp_rsp), bpl_size);
dea3101e 553
3772a991
JS		 554 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
555 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
556 if (!psb)
557 break;
dea3101e 558
3772a991
JS		 559 /*
560 * Get memory from the pci pool to map the virt space to pci
561 * bus space for an I/O. The DMA buffer includes space for the
562 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
563 * necessary to support the sg_tablesize.
564 */
565 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
566 GFP_KERNEL, &psb->dma_handle);
567 if (!psb->data) {
568 kfree(psb);
569 break;
570 }
571
572 /* Initialize virtual ptrs to dma_buf region. */
573 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
574
575 /* Allocate iotag for psb->cur_iocbq. */
576 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
577 if (iotag == 0) {
578 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
579 psb->data, psb->dma_handle);
580 kfree(psb);
581 break;
582 }
583 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
584
585 psb->fcp_cmnd = psb->data;
586 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
587 psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
34b02dcd 588 sizeof(struct fcp_rsp);
dea3101e 589
3772a991
JS		 590 /* Initialize local short-hand pointers. */
591 bpl = psb->fcp_bpl;
592 pdma_phys_fcp_cmd = psb->dma_handle;
593 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
594 pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
595 sizeof(struct fcp_rsp);
596
597 /*
598 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
599 * are sg list bdes. Initialize the first two and leave the
600 * rest for queuecommand.
601 */
602 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
603 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
604 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
605 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
606 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
607
608 /* Setup the physical region for the FCP RSP */
609 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
610 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
611 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
612 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
613 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
614
615 /*
616 * Since the IOCB for the FCP I/O is built into this
617 * lpfc_scsi_buf, initialize it with all known data now.
618 */
619 iocb = &psb->cur_iocbq.iocb;
620 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
621 if ((phba->sli_rev == 3) &&
622 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
623 /* fill in immediate fcp command BDE */
624 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
625 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
626 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
627 unsli3.fcp_ext.icd);
628 iocb->un.fcpi64.bdl.addrHigh = 0;
629 iocb->ulpBdeCount = 0;
630 iocb->ulpLe = 0;
25985edc 631 /* fill in response BDE */
3772a991
JS		 632 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
633 BUFF_TYPE_BDE_64;
634 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
635 sizeof(struct fcp_rsp);
636 iocb->unsli3.fcp_ext.rbde.addrLow =
637 putPaddrLow(pdma_phys_fcp_rsp);
638 iocb->unsli3.fcp_ext.rbde.addrHigh =
639 putPaddrHigh(pdma_phys_fcp_rsp);
640 } else {
641 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
642 iocb->un.fcpi64.bdl.bdeSize =
643 (2 * sizeof(struct ulp_bde64));
644 iocb->un.fcpi64.bdl.addrLow =
645 putPaddrLow(pdma_phys_bpl);
646 iocb->un.fcpi64.bdl.addrHigh =
647 putPaddrHigh(pdma_phys_bpl);
648 iocb->ulpBdeCount = 1;
649 iocb->ulpLe = 1;
650 }
651 iocb->ulpClass = CLASS3;
652 psb->status = IOSTAT_SUCCESS;
da0436e9 653 /* Put it back into the SCSI buffer list */
eee8877e 654 psb->cur_iocbq.context1 = psb;
1c6f4ef5 655 lpfc_release_scsi_buf_s3(phba, psb);
dea3101e 656
34b02dcd 657 }
dea3101e 658
3772a991 659 return bcnt;
dea3101e
JB		 660}
661
1151e3ec
JS		 662/**
663 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
664 * @vport: pointer to lpfc vport data structure.
665 *
666 * This routine is invoked by the vport cleanup for deletions and the cleanup
667 * for an ndlp on removal.
668 **/
669void
670lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
671{
672 struct lpfc_hba *phba = vport->phba;
673 struct lpfc_scsi_buf *psb, *next_psb;
674 unsigned long iflag = 0;
675
676 spin_lock_irqsave(&phba->hbalock, iflag);
677 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
678 list_for_each_entry_safe(psb, next_psb,
679 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
680 if (psb->rdata && psb->rdata->pnode
681 && psb->rdata->pnode->vport == vport)
682 psb->rdata = NULL;
683 }
684 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
685 spin_unlock_irqrestore(&phba->hbalock, iflag);
686}
687
da0436e9
JS		 688/**
689 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
690 * @phba: pointer to lpfc hba data structure.
691 * @axri: pointer to the fcp xri abort wcqe structure.
692 *
693 * This routine is invoked by the worker thread to process a SLI4 fast-path
694 * FCP aborted xri.
695 **/
696void
697lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
698 struct sli4_wcqe_xri_aborted *axri)
699{
700 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
19ca7609 701 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
da0436e9
JS		 702 struct lpfc_scsi_buf *psb, *next_psb;
703 unsigned long iflag = 0;
0f65ff68
JS		 704 struct lpfc_iocbq *iocbq;
705 int i;
19ca7609
JS		 706 struct lpfc_nodelist *ndlp;
707 int rrq_empty = 0;
589a52d6 708 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
da0436e9 709
0f65ff68
JS		 710 spin_lock_irqsave(&phba->hbalock, iflag);
711 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
da0436e9
JS		 712 list_for_each_entry_safe(psb, next_psb,
713 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
714 if (psb->cur_iocbq.sli4_xritag == xri) {
715 list_del(&psb->list);
341af102 716 psb->exch_busy = 0;
da0436e9 717 psb->status = IOSTAT_SUCCESS;
0f65ff68
JS		 718 spin_unlock(
719 &phba->sli4_hba.abts_scsi_buf_list_lock);
1151e3ec
JS		 720 if (psb->rdata && psb->rdata->pnode)
721 ndlp = psb->rdata->pnode;
722 else
723 ndlp = NULL;
724
19ca7609 725 rrq_empty = list_empty(&phba->active_rrq_list);
0f65ff68 726 spin_unlock_irqrestore(&phba->hbalock, iflag);
cb69f7de 727 if (ndlp) {
ee0f4fe1
JS		 728 lpfc_set_rrq_active(phba, ndlp,
729 psb->cur_iocbq.sli4_lxritag, rxid, 1);
cb69f7de
JS		 730 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
731 }
da0436e9 732 lpfc_release_scsi_buf_s4(phba, psb);
19ca7609
JS		 733 if (rrq_empty)
734 lpfc_worker_wake_up(phba);
da0436e9
JS		 735 return;
736 }
737 }
0f65ff68
JS		 738 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
739 for (i = 1; i <= phba->sli.last_iotag; i++) {
740 iocbq = phba->sli.iocbq_lookup[i];
741
742 if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
743 (iocbq->iocb_flag & LPFC_IO_LIBDFC))
744 continue;
745 if (iocbq->sli4_xritag != xri)
746 continue;
747 psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
748 psb->exch_busy = 0;
749 spin_unlock_irqrestore(&phba->hbalock, iflag);
0e9bb8d7 750 if (!list_empty(&pring->txq))
589a52d6 751 lpfc_worker_wake_up(phba);
0f65ff68
JS		 752 return;
753
754 }
755 spin_unlock_irqrestore(&phba->hbalock, iflag);
da0436e9
JS		 756}
757
758/**
8a9d2e80 759 * lpfc_sli4_post_scsi_sgl_list - Psot blocks of scsi buffer sgls from a list
da0436e9 760 * @phba: pointer to lpfc hba data structure.
8a9d2e80 761 * @post_sblist: pointer to the scsi buffer list.
da0436e9 762 *
8a9d2e80
JS		 763 * This routine walks a list of scsi buffers that was passed in. It attempts
764 * to construct blocks of scsi buffer sgls which contains contiguous xris and
765 * uses the non-embedded SGL block post mailbox commands to post to the port.
766 * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use
767 * embedded SGL post mailbox command for posting. The @post_sblist passed in
768 * must be local list, thus no lock is needed when manipulate the list.
da0436e9 769 *
8a9d2e80 770 * Returns: 0 = failure, non-zero number of successfully posted buffers.
da0436e9
JS		 771 **/
772int
8a9d2e80
JS		 773lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba,
774 struct list_head *post_sblist, int sb_count)
da0436e9 775{
8a9d2e80 776 struct lpfc_scsi_buf *psb, *psb_next;
96f7077f 777 int status, sgl_size;
8a9d2e80
JS		 778 int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
779 dma_addr_t pdma_phys_bpl1;
780 int last_xritag = NO_XRI;
781 LIST_HEAD(prep_sblist);
782 LIST_HEAD(blck_sblist);
783 LIST_HEAD(scsi_sblist);
784
785 /* sanity check */
786 if (sb_count <= 0)
787 return -EINVAL;
788
96f7077f
JS		 789 sgl_size = phba->cfg_sg_dma_buf_size -
790 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
791
8a9d2e80
JS		 792 list_for_each_entry_safe(psb, psb_next, post_sblist, list) {
793 list_del_init(&psb->list);
794 block_cnt++;
795 if ((last_xritag != NO_XRI) &&
796 (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) {
797 /* a hole in xri block, form a sgl posting block */
798 list_splice_init(&prep_sblist, &blck_sblist);
799 post_cnt = block_cnt - 1;
800 /* prepare list for next posting block */
801 list_add_tail(&psb->list, &prep_sblist);
802 block_cnt = 1;
803 } else {
804 /* prepare list for next posting block */
805 list_add_tail(&psb->list, &prep_sblist);
806 /* enough sgls for non-embed sgl mbox command */
807 if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
808 list_splice_init(&prep_sblist, &blck_sblist);
809 post_cnt = block_cnt;
810 block_cnt = 0;
da0436e9 811 }
8a9d2e80
JS		 812 }
813 num_posting++;
814 last_xritag = psb->cur_iocbq.sli4_xritag;
da0436e9 815
8a9d2e80
JS		 816 /* end of repost sgl list condition for SCSI buffers */
817 if (num_posting == sb_count) {
818 if (post_cnt == 0) {
819 /* last sgl posting block */
820 list_splice_init(&prep_sblist, &blck_sblist);
821 post_cnt = block_cnt;
822 } else if (block_cnt == 1) {
823 /* last single sgl with non-contiguous xri */
96f7077f 824 if (sgl_size > SGL_PAGE_SIZE)
8a9d2e80
JS		 825 pdma_phys_bpl1 = psb->dma_phys_bpl +
826 SGL_PAGE_SIZE;
827 else
828 pdma_phys_bpl1 = 0;
829 status = lpfc_sli4_post_sgl(phba,
830 psb->dma_phys_bpl,
831 pdma_phys_bpl1,
832 psb->cur_iocbq.sli4_xritag);
833 if (status) {
834 /* failure, put on abort scsi list */
835 psb->exch_busy = 1;
836 } else {
837 /* success, put on SCSI buffer list */
838 psb->exch_busy = 0;
839 psb->status = IOSTAT_SUCCESS;
840 num_posted++;
841 }
842 /* success, put on SCSI buffer sgl list */
843 list_add_tail(&psb->list, &scsi_sblist);
844 }
845 }
da0436e9 846
8a9d2e80
JS		 847 /* continue until a nembed page worth of sgls */
848 if (post_cnt == 0)
da0436e9 849 continue;
8a9d2e80
JS		 850
851 /* post block of SCSI buffer list sgls */
852 status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist,
853 post_cnt);
854
855 /* don't reset xirtag due to hole in xri block */
856 if (block_cnt == 0)
857 last_xritag = NO_XRI;
858
859 /* reset SCSI buffer post count for next round of posting */
860 post_cnt = 0;
861
862 /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */
863 while (!list_empty(&blck_sblist)) {
864 list_remove_head(&blck_sblist, psb,
865 struct lpfc_scsi_buf, list);
da0436e9 866 if (status) {
8a9d2e80 867 /* failure, put on abort scsi list */
341af102 868 psb->exch_busy = 1;
341af102 869 } else {
8a9d2e80 870 /* success, put on SCSI buffer list */
341af102 871 psb->exch_busy = 0;
da0436e9 872 psb->status = IOSTAT_SUCCESS;
8a9d2e80 873 num_posted++;
341af102 874 }
8a9d2e80 875 list_add_tail(&psb->list, &scsi_sblist);
da0436e9
JS		 876 }
877 }
8a9d2e80
JS		 878 /* Push SCSI buffers with sgl posted to the availble list */
879 while (!list_empty(&scsi_sblist)) {
880 list_remove_head(&scsi_sblist, psb,
881 struct lpfc_scsi_buf, list);
882 lpfc_release_scsi_buf_s4(phba, psb);
883 }
884 return num_posted;
885}
886
887/**
888 * lpfc_sli4_repost_scsi_sgl_list - Repsot all the allocated scsi buffer sgls
889 * @phba: pointer to lpfc hba data structure.
890 *
891 * This routine walks the list of scsi buffers that have been allocated and
892 * repost them to the port by using SGL block post. This is needed after a
893 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
894 * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
895 * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
896 *
897 * Returns: 0 = success, non-zero failure.
898 **/
899int
900lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
901{
902 LIST_HEAD(post_sblist);
903 int num_posted, rc = 0;
904
905 /* get all SCSI buffers need to repost to a local list */
a40fc5f0
JS		 906 spin_lock_irq(&phba->scsi_buf_list_get_lock);
907 spin_lock_irq(&phba->scsi_buf_list_put_lock);
908 list_splice_init(&phba->lpfc_scsi_buf_list_get, &post_sblist);
909 list_splice(&phba->lpfc_scsi_buf_list_put, &post_sblist);
910 spin_unlock_irq(&phba->scsi_buf_list_put_lock);
911 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
8a9d2e80
JS		 912
913 /* post the list of scsi buffer sgls to port if available */
914 if (!list_empty(&post_sblist)) {
915 num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist,
916 phba->sli4_hba.scsi_xri_cnt);
917 /* failed to post any scsi buffer, return error */
918 if (num_posted == 0)
919 rc = -EIO;
920 }
da0436e9
JS		 921 return rc;
922}
923
924/**
925 * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
926 * @vport: The virtual port for which this call being executed.
927 * @num_to_allocate: The requested number of buffers to allocate.
928 *
8a9d2e80 929 * This routine allocates scsi buffers for device with SLI-4 interface spec,
da0436e9 930 * the scsi buffer contains all the necessary information needed to initiate
8a9d2e80
JS		 931 * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put
932 * them on a list, it post them to the port by using SGL block post.
da0436e9
JS		 933 *
934 * Return codes:
8a9d2e80 935 * int - number of scsi buffers that were allocated and posted.
da0436e9
JS		 936 * 0 = failure, less than num_to_alloc is a partial failure.
937 **/
938static int
939lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
940{
941 struct lpfc_hba *phba = vport->phba;
942 struct lpfc_scsi_buf *psb;
943 struct sli4_sge *sgl;
944 IOCB_t *iocb;
945 dma_addr_t pdma_phys_fcp_cmd;
946 dma_addr_t pdma_phys_fcp_rsp;
96f7077f 947 dma_addr_t pdma_phys_bpl;
8a9d2e80 948 uint16_t iotag, lxri = 0;
96f7077f 949 int bcnt, num_posted, sgl_size;
8a9d2e80
JS		 950 LIST_HEAD(prep_sblist);
951 LIST_HEAD(post_sblist);
952 LIST_HEAD(scsi_sblist);
da0436e9 953
96f7077f
JS		 954 sgl_size = phba->cfg_sg_dma_buf_size -
955 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
956
957 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
958 "9068 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
959 num_to_alloc, phba->cfg_sg_dma_buf_size, sgl_size,
960 (int)sizeof(struct fcp_cmnd),
961 (int)sizeof(struct fcp_rsp));
962
da0436e9
JS		 963 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
964 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
965 if (!psb)
966 break;
da0436e9 967 /*
8a9d2e80
JS		 968 * Get memory from the pci pool to map the virt space to
969 * pci bus space for an I/O. The DMA buffer includes space
970 * for the struct fcp_cmnd, struct fcp_rsp and the number
971 * of bde's necessary to support the sg_tablesize.
da0436e9
JS		 972 */
973 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
974 GFP_KERNEL, &psb->dma_handle);
975 if (!psb->data) {
976 kfree(psb);
977 break;
978 }
da0436e9
JS		 979 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
980
96f7077f
JS		 981 /* Page alignment is CRITICAL, double check to be sure */
982 if (((unsigned long)(psb->data) &
983 (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0) {
984 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
985 psb->data, psb->dma_handle);
986 kfree(psb);
987 break;
988 }
989
da0436e9
JS		 990 /* Allocate iotag for psb->cur_iocbq. */
991 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
992 if (iotag == 0) {
b92938b4
JS		 993 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
994 psb->data, psb->dma_handle);
da0436e9
JS		 995 kfree(psb);
996 break;
997 }
998
6d368e53
JS		 999 lxri = lpfc_sli4_next_xritag(phba);
1000 if (lxri == NO_XRI) {
da0436e9
JS		 1001 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
1002 psb->data, psb->dma_handle);
1003 kfree(psb);
1004 break;
1005 }
6d368e53
JS		 1006 psb->cur_iocbq.sli4_lxritag = lxri;
1007 psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
da0436e9 1008 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
da0436e9 1009 psb->fcp_bpl = psb->data;
96f7077f 1010 psb->fcp_cmnd = (psb->data + sgl_size);
da0436e9
JS		 1011 psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd +
1012 sizeof(struct fcp_cmnd));
1013
1014 /* Initialize local short-hand pointers. */
1015 sgl = (struct sli4_sge *)psb->fcp_bpl;
1016 pdma_phys_bpl = psb->dma_handle;
96f7077f 1017 pdma_phys_fcp_cmd = (psb->dma_handle + sgl_size);
da0436e9
JS		 1018 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
1019
1020 /*
8a9d2e80
JS		 1021 * The first two bdes are the FCP_CMD and FCP_RSP.
1022 * The balance are sg list bdes. Initialize the
1023 * first two and leave the rest for queuecommand.
da0436e9
JS		 1024 */
1025 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
1026 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
0558056c 1027 sgl->word2 = le32_to_cpu(sgl->word2);
da0436e9
JS		 1028 bf_set(lpfc_sli4_sge_last, sgl, 0);
1029 sgl->word2 = cpu_to_le32(sgl->word2);
28baac74 1030 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
da0436e9
JS		 1031 sgl++;
1032
1033 /* Setup the physical region for the FCP RSP */
1034 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
1035 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
0558056c 1036 sgl->word2 = le32_to_cpu(sgl->word2);
da0436e9
JS		 1037 bf_set(lpfc_sli4_sge_last, sgl, 1);
1038 sgl->word2 = cpu_to_le32(sgl->word2);
28baac74 1039 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
da0436e9
JS		 1040
1041 /*
1042 * Since the IOCB for the FCP I/O is built into this
1043 * lpfc_scsi_buf, initialize it with all known data now.
1044 */
1045 iocb = &psb->cur_iocbq.iocb;
1046 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
1047 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
1048 /* setting the BLP size to 2 * sizeof BDE may not be correct.
1049 * We are setting the bpl to point to out sgl. An sgl's
1050 * entries are 16 bytes, a bpl entries are 12 bytes.
1051 */
1052 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
1053 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
1054 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
1055 iocb->ulpBdeCount = 1;
1056 iocb->ulpLe = 1;
1057 iocb->ulpClass = CLASS3;
8a9d2e80 1058 psb->cur_iocbq.context1 = psb;
da0436e9 1059 psb->dma_phys_bpl = pdma_phys_bpl;
da0436e9 1060
8a9d2e80
JS		 1061 /* add the scsi buffer to a post list */
1062 list_add_tail(&psb->list, &post_sblist);
a40fc5f0 1063 spin_lock_irq(&phba->scsi_buf_list_get_lock);
8a9d2e80 1064 phba->sli4_hba.scsi_xri_cnt++;
a40fc5f0 1065 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
8a9d2e80
JS		 1066 }
1067 lpfc_printf_log(phba, KERN_INFO, LOG_BG,
1068 "3021 Allocate %d out of %d requested new SCSI "
1069 "buffers\n", bcnt, num_to_alloc);
1070
1071 /* post the list of scsi buffer sgls to port if available */
1072 if (!list_empty(&post_sblist))
1073 num_posted = lpfc_sli4_post_scsi_sgl_list(phba,
1074 &post_sblist, bcnt);
1075 else
1076 num_posted = 0;
1077
1078 return num_posted;
da0436e9
JS		 1079}
1080
9bad7671 1081/**
3772a991
JS		 1082 * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
1083 * @vport: The virtual port for which this call being executed.
1084 * @num_to_allocate: The requested number of buffers to allocate.
1085 *
1086 * This routine wraps the actual SCSI buffer allocator function pointer from
1087 * the lpfc_hba struct.
1088 *
1089 * Return codes:
1090 * int - number of scsi buffers that were allocated.
1091 * 0 = failure, less than num_to_alloc is a partial failure.
1092 **/
1093static inline int
1094lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
1095{
1096 return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc);
1097}
1098
1099/**
19ca7609 1100 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
3772a991 1101 * @phba: The HBA for which this call is being executed.
9bad7671
JS		 1102 *
1103 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1104 * and returns to caller.
1105 *
1106 * Return codes:
1107 * NULL - Error
1108 * Pointer to lpfc_scsi_buf - Success
1109 **/
455c53ec 1110static struct lpfc_scsi_buf*
19ca7609 1111lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 1112{
0bd4ca25 1113 struct lpfc_scsi_buf * lpfc_cmd = NULL;
a40fc5f0
JS		 1114 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
1115 unsigned long gflag = 0;
1116 unsigned long pflag = 0;
1117
1118 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, gflag);
1119 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_scsi_buf,
1120 list);
1121 if (!lpfc_cmd) {
1122 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, pflag);
1123 list_splice(&phba->lpfc_scsi_buf_list_put,
1124 &phba->lpfc_scsi_buf_list_get);
1125 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
1126 list_remove_head(scsi_buf_list_get, lpfc_cmd,
1127 struct lpfc_scsi_buf, list);
1128 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, pflag);
1dcb58e5 1129 }
a40fc5f0 1130 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, gflag);
0bd4ca25
JSEC		 1131 return lpfc_cmd;
1132}
19ca7609
JS		 1133/**
1134 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1135 * @phba: The HBA for which this call is being executed.
1136 *
1137 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1138 * and returns to caller.
1139 *
1140 * Return codes:
1141 * NULL - Error
1142 * Pointer to lpfc_scsi_buf - Success
1143 **/
1144static struct lpfc_scsi_buf*
1145lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1146{
1151e3ec 1147 struct lpfc_scsi_buf *lpfc_cmd ;
a40fc5f0
JS		 1148 unsigned long gflag = 0;
1149 unsigned long pflag = 0;
19ca7609
JS		 1150 int found = 0;
1151
a40fc5f0
JS		 1152 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, gflag);
1153 list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list_get, list) {
19ca7609 1154 if (lpfc_test_rrq_active(phba, ndlp,
ee0f4fe1 1155 lpfc_cmd->cur_iocbq.sli4_lxritag))
1151e3ec
JS		 1156 continue;
1157 list_del(&lpfc_cmd->list);
19ca7609 1158 found = 1;
1151e3ec 1159 break;
19ca7609 1160 }
a40fc5f0
JS		 1161 if (!found) {
1162 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, pflag);
1163 list_splice(&phba->lpfc_scsi_buf_list_put,
1164 &phba->lpfc_scsi_buf_list_get);
1165 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
1166 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, pflag);
1167 list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list_get,
1168 list) {
1169 if (lpfc_test_rrq_active(
1170 phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag))
1171 continue;
1172 list_del(&lpfc_cmd->list);
1173 found = 1;
1174 break;
1175 }
1176 }
1177 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, gflag);
1151e3ec
JS		 1178 if (!found)
1179 return NULL;
a40fc5f0 1180 return lpfc_cmd;
19ca7609
JS		 1181}
1182/**
1183 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1184 * @phba: The HBA for which this call is being executed.
1185 *
1186 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1187 * and returns to caller.
1188 *
1189 * Return codes:
1190 * NULL - Error
1191 * Pointer to lpfc_scsi_buf - Success
1192 **/
1193static struct lpfc_scsi_buf*
1194lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1195{
1196 return phba->lpfc_get_scsi_buf(phba, ndlp);
1197}
dea3101e 1198
9bad7671 1199/**
3772a991 1200 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
9bad7671
JS		 1201 * @phba: The Hba for which this call is being executed.
1202 * @psb: The scsi buffer which is being released.
1203 *
1204 * This routine releases @psb scsi buffer by adding it to tail of @phba
1205 * lpfc_scsi_buf_list list.
1206 **/
0bd4ca25 1207static void
3772a991 1208lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
0bd4ca25 1209{
875fbdfe 1210 unsigned long iflag = 0;
dea3101e 1211
a40fc5f0
JS		 1212 psb->seg_cnt = 0;
1213 psb->nonsg_phys = 0;
1214 psb->prot_seg_cnt = 0;
1215
1216 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
0bd4ca25 1217 psb->pCmd = NULL;
6a485eb9 1218 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
a40fc5f0
JS		 1219 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1220 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
dea3101e
JB		 1221}
1222
da0436e9
JS		 1223/**
1224 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
1225 * @phba: The Hba for which this call is being executed.
1226 * @psb: The scsi buffer which is being released.
1227 *
1228 * This routine releases @psb scsi buffer by adding it to tail of @phba
1229 * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer
1230 * and cannot be reused for at least RA_TOV amount of time if it was
1231 * aborted.
1232 **/
1233static void
1234lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1235{
1236 unsigned long iflag = 0;
1237
a40fc5f0
JS		 1238 psb->seg_cnt = 0;
1239 psb->nonsg_phys = 0;
1240 psb->prot_seg_cnt = 0;
1241
341af102 1242 if (psb->exch_busy) {
da0436e9
JS		 1243 spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
1244 iflag);
1245 psb->pCmd = NULL;
1246 list_add_tail(&psb->list,
1247 &phba->sli4_hba.lpfc_abts_scsi_buf_list);
1248 spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
1249 iflag);
1250 } else {
da0436e9 1251 psb->pCmd = NULL;
6a485eb9 1252 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
a40fc5f0
JS		 1253 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1254 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1255 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
da0436e9
JS		 1256 }
1257}
1258
9bad7671 1259/**
3772a991
JS		 1260 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
1261 * @phba: The Hba for which this call is being executed.
1262 * @psb: The scsi buffer which is being released.
1263 *
1264 * This routine releases @psb scsi buffer by adding it to tail of @phba
1265 * lpfc_scsi_buf_list list.
1266 **/
1267static void
1268lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1269{
1270
1271 phba->lpfc_release_scsi_buf(phba, psb);
1272}
1273
1274/**
1275 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
9bad7671
JS		 1276 * @phba: The Hba for which this call is being executed.
1277 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1278 *
1279 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3772a991
JS		 1280 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
1281 * through sg elements and format the bdea. This routine also initializes all
1282 * IOCB fields which are dependent on scsi command request buffer.
9bad7671
JS		 1283 *
1284 * Return codes:
1285 * 1 - Error
1286 * 0 - Success
1287 **/
dea3101e 1288static int
3772a991 1289lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
dea3101e
JB		 1290{
1291 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
1292 struct scatterlist *sgel = NULL;
1293 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
1294 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
0f65ff68 1295 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
dea3101e 1296 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
34b02dcd 1297 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
dea3101e 1298 dma_addr_t physaddr;
34b02dcd 1299 uint32_t num_bde = 0;
a0b4f78f 1300 int nseg, datadir = scsi_cmnd->sc_data_direction;
dea3101e
JB		 1301
1302 /*
1303 * There are three possibilities here - use scatter-gather segment, use
1304 * the single mapping, or neither. Start the lpfc command prep by
1305 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1306 * data bde entry.
1307 */
1308 bpl += 2;
c59fd9eb 1309 if (scsi_sg_count(scsi_cmnd)) {
dea3101e
JB		 1310 /*
1311 * The driver stores the segment count returned from pci_map_sg
1312 * because this a count of dma-mappings used to map the use_sg
1313 * pages. They are not guaranteed to be the same for those
1314 * architectures that implement an IOMMU.
1315 */
dea3101e 1316
c59fd9eb
FT		 1317 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
1318 scsi_sg_count(scsi_cmnd), datadir);
1319 if (unlikely(!nseg))
1320 return 1;
1321
a0b4f78f 1322 lpfc_cmd->seg_cnt = nseg;
dea3101e 1323 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
6a9c52cf
JS		 1324 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1325 "9064 BLKGRD: %s: Too many sg segments from "
e2a0a9d6 1326 "dma_map_sg. Config %d, seg_cnt %d\n",
cadbd4a5 1327 __func__, phba->cfg_sg_seg_cnt,
dea3101e 1328 lpfc_cmd->seg_cnt);
96f7077f 1329 lpfc_cmd->seg_cnt = 0;
a0b4f78f 1330 scsi_dma_unmap(scsi_cmnd);
dea3101e
JB		 1331 return 1;
1332 }
1333
1334 /*
1335 * The driver established a maximum scatter-gather segment count
1336 * during probe that limits the number of sg elements in any
1337 * single scsi command. Just run through the seg_cnt and format
1338 * the bde's.
34b02dcd
JS		 1339 * When using SLI-3 the driver will try to fit all the BDEs into
1340 * the IOCB. If it can't then the BDEs get added to a BPL as it
1341 * does for SLI-2 mode.
dea3101e 1342 */
34b02dcd 1343 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
dea3101e 1344 physaddr = sg_dma_address(sgel);
34b02dcd 1345 if (phba->sli_rev == 3 &&
e2a0a9d6 1346 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
0f65ff68 1347 !(iocbq->iocb_flag & DSS_SECURITY_OP) &&
34b02dcd
JS		 1348 nseg <= LPFC_EXT_DATA_BDE_COUNT) {
1349 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1350 data_bde->tus.f.bdeSize = sg_dma_len(sgel);
1351 data_bde->addrLow = putPaddrLow(physaddr);
1352 data_bde->addrHigh = putPaddrHigh(physaddr);
1353 data_bde++;
1354 } else {
1355 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1356 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1357 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1358 bpl->addrLow =
1359 le32_to_cpu(putPaddrLow(physaddr));
1360 bpl->addrHigh =
1361 le32_to_cpu(putPaddrHigh(physaddr));
1362 bpl++;
1363 }
dea3101e 1364 }
c59fd9eb 1365 }
dea3101e
JB		 1366
1367 /*
1368 * Finish initializing those IOCB fields that are dependent on the
34b02dcd
JS		 1369 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1370 * explicitly reinitialized and for SLI-3 the extended bde count is
1371 * explicitly reinitialized since all iocb memory resources are reused.
dea3101e 1372 */
e2a0a9d6 1373 if (phba->sli_rev == 3 &&
0f65ff68
JS		 1374 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
1375 !(iocbq->iocb_flag & DSS_SECURITY_OP)) {
34b02dcd
JS		 1376 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
1377 /*
1378 * The extended IOCB format can only fit 3 BDE or a BPL.
1379 * This I/O has more than 3 BDE so the 1st data bde will
1380 * be a BPL that is filled in here.
1381 */
1382 physaddr = lpfc_cmd->dma_handle;
1383 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
1384 data_bde->tus.f.bdeSize = (num_bde *
1385 sizeof(struct ulp_bde64));
1386 physaddr += (sizeof(struct fcp_cmnd) +
1387 sizeof(struct fcp_rsp) +
1388 (2 * sizeof(struct ulp_bde64)));
1389 data_bde->addrHigh = putPaddrHigh(physaddr);
1390 data_bde->addrLow = putPaddrLow(physaddr);
25985edc 1391 /* ebde count includes the response bde and data bpl */
34b02dcd
JS		 1392 iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
1393 } else {
25985edc 1394 /* ebde count includes the response bde and data bdes */
34b02dcd
JS		 1395 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
1396 }
1397 } else {
1398 iocb_cmd->un.fcpi64.bdl.bdeSize =
1399 ((num_bde + 2) * sizeof(struct ulp_bde64));
0f65ff68 1400 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
34b02dcd 1401 }
09372820 1402 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
e2a0a9d6
JS		 1403
1404 /*
1405 * Due to difference in data length between DIF/non-DIF paths,
1406 * we need to set word 4 of IOCB here
1407 */
a257bf90 1408 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
e2a0a9d6
JS		 1409 return 0;
1410}
1411
f9bb2da1
JS		 1412static inline unsigned
1413lpfc_cmd_blksize(struct scsi_cmnd *sc)
1414{
1415 return sc->device->sector_size;
1416}
1417
1418#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 1419
9a6b09c0
JS		 1420/* Return if if error injection is detected by Initiator */
1421#define BG_ERR_INIT 0x1
1422/* Return if if error injection is detected by Target */
1423#define BG_ERR_TGT 0x2
1424/* Return if if swapping CSUM<-->CRC is required for error injection */
1425#define BG_ERR_SWAP 0x10
1426/* Return if disabling Guard/Ref/App checking is required for error injection */
1427#define BG_ERR_CHECK 0x20
acd6859b
JS		 1428
1429/**
1430 * lpfc_bg_err_inject - Determine if we should inject an error
1431 * @phba: The Hba for which this call is being executed.
f9bb2da1
JS		 1432 * @sc: The SCSI command to examine
1433 * @reftag: (out) BlockGuard reference tag for transmitted data
1434 * @apptag: (out) BlockGuard application tag for transmitted data
1435 * @new_guard (in) Value to replace CRC with if needed
1436 *
9a6b09c0 1437 * Returns BG_ERR_* bit mask or 0 if request ignored
acd6859b 1438 **/
f9bb2da1
JS		 1439static int
1440lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1441 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
1442{
1443 struct scatterlist *sgpe; /* s/g prot entry */
1444 struct scatterlist *sgde; /* s/g data entry */
9a6b09c0 1445 struct lpfc_scsi_buf *lpfc_cmd = NULL;
acd6859b 1446 struct scsi_dif_tuple *src = NULL;
4ac9b226
JS		 1447 struct lpfc_nodelist *ndlp;
1448 struct lpfc_rport_data *rdata;
f9bb2da1
JS		 1449 uint32_t op = scsi_get_prot_op(sc);
1450 uint32_t blksize;
1451 uint32_t numblks;
1452 sector_t lba;
1453 int rc = 0;
acd6859b 1454 int blockoff = 0;
f9bb2da1
JS		 1455
1456 if (op == SCSI_PROT_NORMAL)
1457 return 0;
1458
acd6859b
JS		 1459 sgpe = scsi_prot_sglist(sc);
1460 sgde = scsi_sglist(sc);
f9bb2da1 1461 lba = scsi_get_lba(sc);
4ac9b226
JS		 1462
1463 /* First check if we need to match the LBA */
f9bb2da1
JS		 1464 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
1465 blksize = lpfc_cmd_blksize(sc);
1466 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
1467
1468 /* Make sure we have the right LBA if one is specified */
1469 if ((phba->lpfc_injerr_lba < lba) ||
1470 (phba->lpfc_injerr_lba >= (lba + numblks)))
1471 return 0;
acd6859b
JS		 1472 if (sgpe) {
1473 blockoff = phba->lpfc_injerr_lba - lba;
1474 numblks = sg_dma_len(sgpe) /
1475 sizeof(struct scsi_dif_tuple);
1476 if (numblks < blockoff)
1477 blockoff = numblks;
acd6859b 1478 }
f9bb2da1
JS		 1479 }
1480
4ac9b226
JS		 1481 /* Next check if we need to match the remote NPortID or WWPN */
1482 rdata = sc->device->hostdata;
1483 if (rdata && rdata->pnode) {
1484 ndlp = rdata->pnode;
1485
1486 /* Make sure we have the right NPortID if one is specified */
1487 if (phba->lpfc_injerr_nportid &&
1488 (phba->lpfc_injerr_nportid != ndlp->nlp_DID))
1489 return 0;
1490
1491 /*
1492 * Make sure we have the right WWPN if one is specified.
1493 * wwn[0] should be a non-zero NAA in a good WWPN.
1494 */
1495 if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
1496 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
1497 sizeof(struct lpfc_name)) != 0))
1498 return 0;
1499 }
1500
1501 /* Setup a ptr to the protection data if the SCSI host provides it */
1502 if (sgpe) {
1503 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
1504 src += blockoff;
1505 lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble;
1506 }
1507
f9bb2da1
JS		 1508 /* Should we change the Reference Tag */
1509 if (reftag) {
acd6859b
JS		 1510 if (phba->lpfc_injerr_wref_cnt) {
1511 switch (op) {
1512 case SCSI_PROT_WRITE_PASS:
9a6b09c0
JS		 1513 if (src) {
1514 /*
1515 * For WRITE_PASS, force the error
1516 * to be sent on the wire. It should
1517 * be detected by the Target.
1518 * If blockoff != 0 error will be
1519 * inserted in middle of the IO.
1520 */
acd6859b
JS		 1521
1522 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1523 "9076 BLKGRD: Injecting reftag error: "
1524 "write lba x%lx + x%x oldrefTag x%x\n",
1525 (unsigned long)lba, blockoff,
9a6b09c0 1526 be32_to_cpu(src->ref_tag));
f9bb2da1 1527
acd6859b 1528 /*
9a6b09c0
JS		 1529 * Save the old ref_tag so we can
1530 * restore it on completion.
acd6859b 1531 */
9a6b09c0
JS		 1532 if (lpfc_cmd) {
1533 lpfc_cmd->prot_data_type =
1534 LPFC_INJERR_REFTAG;
1535 lpfc_cmd->prot_data_segment =
1536 src;
1537 lpfc_cmd->prot_data =
1538 src->ref_tag;
1539 }
1540 src->ref_tag = cpu_to_be32(0xDEADBEEF);
acd6859b 1541 phba->lpfc_injerr_wref_cnt--;
4ac9b226
JS		 1542 if (phba->lpfc_injerr_wref_cnt == 0) {
1543 phba->lpfc_injerr_nportid = 0;
1544 phba->lpfc_injerr_lba =
1545 LPFC_INJERR_LBA_OFF;
1546 memset(&phba->lpfc_injerr_wwpn,
1547 0, sizeof(struct lpfc_name));
1548 }
9a6b09c0
JS		 1549 rc = BG_ERR_TGT | BG_ERR_CHECK;
1550
acd6859b
JS		 1551 break;
1552 }
1553 /* Drop thru */
9a6b09c0 1554 case SCSI_PROT_WRITE_INSERT:
acd6859b 1555 /*
9a6b09c0
JS		 1556 * For WRITE_INSERT, force the error
1557 * to be sent on the wire. It should be
1558 * detected by the Target.
acd6859b 1559 */
9a6b09c0 1560 /* DEADBEEF will be the reftag on the wire */
acd6859b
JS		 1561 *reftag = 0xDEADBEEF;
1562 phba->lpfc_injerr_wref_cnt--;
4ac9b226
JS		 1563 if (phba->lpfc_injerr_wref_cnt == 0) {
1564 phba->lpfc_injerr_nportid = 0;
1565 phba->lpfc_injerr_lba =
1566 LPFC_INJERR_LBA_OFF;
1567 memset(&phba->lpfc_injerr_wwpn,
1568 0, sizeof(struct lpfc_name));
1569 }
9a6b09c0 1570 rc = BG_ERR_TGT | BG_ERR_CHECK;
acd6859b
JS		 1571
1572 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1573 "9078 BLKGRD: Injecting reftag error: "
acd6859b
JS		 1574 "write lba x%lx\n", (unsigned long)lba);
1575 break;
9a6b09c0 1576 case SCSI_PROT_WRITE_STRIP:
acd6859b 1577 /*
9a6b09c0
JS		 1578 * For WRITE_STRIP and WRITE_PASS,
1579 * force the error on data
1580 * being copied from SLI-Host to SLI-Port.
acd6859b 1581 */
f9bb2da1
JS		 1582 *reftag = 0xDEADBEEF;
1583 phba->lpfc_injerr_wref_cnt--;
4ac9b226
JS		 1584 if (phba->lpfc_injerr_wref_cnt == 0) {
1585 phba->lpfc_injerr_nportid = 0;
1586 phba->lpfc_injerr_lba =
1587 LPFC_INJERR_LBA_OFF;
1588 memset(&phba->lpfc_injerr_wwpn,
1589 0, sizeof(struct lpfc_name));
1590 }
9a6b09c0 1591 rc = BG_ERR_INIT;
f9bb2da1
JS		 1592
1593 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1594 "9077 BLKGRD: Injecting reftag error: "
f9bb2da1 1595 "write lba x%lx\n", (unsigned long)lba);
acd6859b 1596 break;
f9bb2da1 1597 }
acd6859b
JS		 1598 }
1599 if (phba->lpfc_injerr_rref_cnt) {
1600 switch (op) {
1601 case SCSI_PROT_READ_INSERT:
acd6859b
JS		 1602 case SCSI_PROT_READ_STRIP:
1603 case SCSI_PROT_READ_PASS:
1604 /*
1605 * For READ_STRIP and READ_PASS, force the
1606 * error on data being read off the wire. It
1607 * should force an IO error to the driver.
1608 */
f9bb2da1
JS		 1609 *reftag = 0xDEADBEEF;
1610 phba->lpfc_injerr_rref_cnt--;
4ac9b226
JS		 1611 if (phba->lpfc_injerr_rref_cnt == 0) {
1612 phba->lpfc_injerr_nportid = 0;
1613 phba->lpfc_injerr_lba =
1614 LPFC_INJERR_LBA_OFF;
1615 memset(&phba->lpfc_injerr_wwpn,
1616 0, sizeof(struct lpfc_name));
1617 }
acd6859b 1618 rc = BG_ERR_INIT;
f9bb2da1
JS		 1619
1620 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 1621 "9079 BLKGRD: Injecting reftag error: "
f9bb2da1 1622 "read lba x%lx\n", (unsigned long)lba);
acd6859b 1623 break;
f9bb2da1
JS		 1624 }
1625 }
1626 }
1627
1628 /* Should we change the Application Tag */
1629 if (apptag) {
acd6859b
JS		 1630 if (phba->lpfc_injerr_wapp_cnt) {
1631 switch (op) {
1632 case SCSI_PROT_WRITE_PASS:
4ac9b226 1633 if (src) {
9a6b09c0
JS		 1634 /*
1635 * For WRITE_PASS, force the error
1636 * to be sent on the wire. It should
1637 * be detected by the Target.
1638 * If blockoff != 0 error will be
1639 * inserted in middle of the IO.
1640 */
1641
acd6859b
JS		 1642 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1643 "9080 BLKGRD: Injecting apptag error: "
1644 "write lba x%lx + x%x oldappTag x%x\n",
1645 (unsigned long)lba, blockoff,
9a6b09c0 1646 be16_to_cpu(src->app_tag));
acd6859b
JS		 1647
1648 /*
9a6b09c0
JS		 1649 * Save the old app_tag so we can
1650 * restore it on completion.
acd6859b 1651 */
9a6b09c0
JS		 1652 if (lpfc_cmd) {
1653 lpfc_cmd->prot_data_type =
1654 LPFC_INJERR_APPTAG;
1655 lpfc_cmd->prot_data_segment =
1656 src;
1657 lpfc_cmd->prot_data =
1658 src->app_tag;
1659 }
1660 src->app_tag = cpu_to_be16(0xDEAD);
acd6859b 1661 phba->lpfc_injerr_wapp_cnt--;
4ac9b226
JS		 1662 if (phba->lpfc_injerr_wapp_cnt == 0) {
1663 phba->lpfc_injerr_nportid = 0;
1664 phba->lpfc_injerr_lba =
1665 LPFC_INJERR_LBA_OFF;
1666 memset(&phba->lpfc_injerr_wwpn,
1667 0, sizeof(struct lpfc_name));
1668 }
9a6b09c0 1669 rc = BG_ERR_TGT | BG_ERR_CHECK;
acd6859b
JS		 1670 break;
1671 }
1672 /* Drop thru */
9a6b09c0 1673 case SCSI_PROT_WRITE_INSERT:
acd6859b 1674 /*
9a6b09c0
JS		 1675 * For WRITE_INSERT, force the
1676 * error to be sent on the wire. It should be
1677 * detected by the Target.
acd6859b 1678 */
9a6b09c0 1679 /* DEAD will be the apptag on the wire */
acd6859b
JS		 1680 *apptag = 0xDEAD;
1681 phba->lpfc_injerr_wapp_cnt--;
4ac9b226
JS		 1682 if (phba->lpfc_injerr_wapp_cnt == 0) {
1683 phba->lpfc_injerr_nportid = 0;
1684 phba->lpfc_injerr_lba =
1685 LPFC_INJERR_LBA_OFF;
1686 memset(&phba->lpfc_injerr_wwpn,
1687 0, sizeof(struct lpfc_name));
1688 }
9a6b09c0 1689 rc = BG_ERR_TGT | BG_ERR_CHECK;
f9bb2da1 1690
acd6859b 1691 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1692 "0813 BLKGRD: Injecting apptag error: "
acd6859b
JS		 1693 "write lba x%lx\n", (unsigned long)lba);
1694 break;
9a6b09c0 1695 case SCSI_PROT_WRITE_STRIP:
acd6859b 1696 /*
9a6b09c0
JS		 1697 * For WRITE_STRIP and WRITE_PASS,
1698 * force the error on data
1699 * being copied from SLI-Host to SLI-Port.
acd6859b 1700 */
f9bb2da1
JS		 1701 *apptag = 0xDEAD;
1702 phba->lpfc_injerr_wapp_cnt--;
4ac9b226
JS		 1703 if (phba->lpfc_injerr_wapp_cnt == 0) {
1704 phba->lpfc_injerr_nportid = 0;
1705 phba->lpfc_injerr_lba =
1706 LPFC_INJERR_LBA_OFF;
1707 memset(&phba->lpfc_injerr_wwpn,
1708 0, sizeof(struct lpfc_name));
1709 }
9a6b09c0 1710 rc = BG_ERR_INIT;
f9bb2da1
JS		 1711
1712 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1713 "0812 BLKGRD: Injecting apptag error: "
f9bb2da1 1714 "write lba x%lx\n", (unsigned long)lba);
acd6859b 1715 break;
f9bb2da1 1716 }
acd6859b
JS		 1717 }
1718 if (phba->lpfc_injerr_rapp_cnt) {
1719 switch (op) {
1720 case SCSI_PROT_READ_INSERT:
acd6859b
JS		 1721 case SCSI_PROT_READ_STRIP:
1722 case SCSI_PROT_READ_PASS:
1723 /*
1724 * For READ_STRIP and READ_PASS, force the
1725 * error on data being read off the wire. It
1726 * should force an IO error to the driver.
1727 */
f9bb2da1
JS		 1728 *apptag = 0xDEAD;
1729 phba->lpfc_injerr_rapp_cnt--;
4ac9b226
JS		 1730 if (phba->lpfc_injerr_rapp_cnt == 0) {
1731 phba->lpfc_injerr_nportid = 0;
1732 phba->lpfc_injerr_lba =
1733 LPFC_INJERR_LBA_OFF;
1734 memset(&phba->lpfc_injerr_wwpn,
1735 0, sizeof(struct lpfc_name));
1736 }
acd6859b 1737 rc = BG_ERR_INIT;
f9bb2da1
JS		 1738
1739 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 1740 "0814 BLKGRD: Injecting apptag error: "
f9bb2da1 1741 "read lba x%lx\n", (unsigned long)lba);
acd6859b 1742 break;
f9bb2da1
JS		 1743 }
1744 }
1745 }
1746
acd6859b 1747
f9bb2da1 1748 /* Should we change the Guard Tag */
acd6859b
JS		 1749 if (new_guard) {
1750 if (phba->lpfc_injerr_wgrd_cnt) {
1751 switch (op) {
1752 case SCSI_PROT_WRITE_PASS:
9a6b09c0 1753 rc = BG_ERR_CHECK;
acd6859b 1754 /* Drop thru */
9a6b09c0
JS		 1755
1756 case SCSI_PROT_WRITE_INSERT:
acd6859b 1757 /*
9a6b09c0
JS		 1758 * For WRITE_INSERT, force the
1759 * error to be sent on the wire. It should be
1760 * detected by the Target.
acd6859b
JS		 1761 */
1762 phba->lpfc_injerr_wgrd_cnt--;
4ac9b226
JS		 1763 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1764 phba->lpfc_injerr_nportid = 0;
1765 phba->lpfc_injerr_lba =
1766 LPFC_INJERR_LBA_OFF;
1767 memset(&phba->lpfc_injerr_wwpn,
1768 0, sizeof(struct lpfc_name));
1769 }
f9bb2da1 1770
9a6b09c0 1771 rc |= BG_ERR_TGT | BG_ERR_SWAP;
acd6859b 1772 /* Signals the caller to swap CRC->CSUM */
f9bb2da1 1773
acd6859b 1774 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1775 "0817 BLKGRD: Injecting guard error: "
acd6859b
JS		 1776 "write lba x%lx\n", (unsigned long)lba);
1777 break;
9a6b09c0 1778 case SCSI_PROT_WRITE_STRIP:
acd6859b 1779 /*
9a6b09c0
JS		 1780 * For WRITE_STRIP and WRITE_PASS,
1781 * force the error on data
1782 * being copied from SLI-Host to SLI-Port.
acd6859b
JS		 1783 */
1784 phba->lpfc_injerr_wgrd_cnt--;
4ac9b226
JS		 1785 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1786 phba->lpfc_injerr_nportid = 0;
1787 phba->lpfc_injerr_lba =
1788 LPFC_INJERR_LBA_OFF;
1789 memset(&phba->lpfc_injerr_wwpn,
1790 0, sizeof(struct lpfc_name));
1791 }
f9bb2da1 1792
9a6b09c0 1793 rc = BG_ERR_INIT | BG_ERR_SWAP;
acd6859b
JS		 1794 /* Signals the caller to swap CRC->CSUM */
1795
1796 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1797 "0816 BLKGRD: Injecting guard error: "
acd6859b
JS		 1798 "write lba x%lx\n", (unsigned long)lba);
1799 break;
1800 }
1801 }
1802 if (phba->lpfc_injerr_rgrd_cnt) {
1803 switch (op) {
1804 case SCSI_PROT_READ_INSERT:
acd6859b
JS		 1805 case SCSI_PROT_READ_STRIP:
1806 case SCSI_PROT_READ_PASS:
1807 /*
1808 * For READ_STRIP and READ_PASS, force the
1809 * error on data being read off the wire. It
1810 * should force an IO error to the driver.
1811 */
acd6859b 1812 phba->lpfc_injerr_rgrd_cnt--;
4ac9b226
JS		 1813 if (phba->lpfc_injerr_rgrd_cnt == 0) {
1814 phba->lpfc_injerr_nportid = 0;
1815 phba->lpfc_injerr_lba =
1816 LPFC_INJERR_LBA_OFF;
1817 memset(&phba->lpfc_injerr_wwpn,
1818 0, sizeof(struct lpfc_name));
1819 }
acd6859b 1820
9a6b09c0 1821 rc = BG_ERR_INIT | BG_ERR_SWAP;
acd6859b
JS		 1822 /* Signals the caller to swap CRC->CSUM */
1823
1824 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1825 "0818 BLKGRD: Injecting guard error: "
1826 "read lba x%lx\n", (unsigned long)lba);
1827 }
f9bb2da1
JS		 1828 }
1829 }
acd6859b 1830
f9bb2da1
JS		 1831 return rc;
1832}
1833#endif
1834
acd6859b
JS		 1835/**
1836 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
1837 * the specified SCSI command.
1838 * @phba: The Hba for which this call is being executed.
6c8eea54
JS		 1839 * @sc: The SCSI command to examine
1840 * @txopt: (out) BlockGuard operation for transmitted data
1841 * @rxopt: (out) BlockGuard operation for received data
1842 *
1843 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1844 *
acd6859b 1845 **/
e2a0a9d6 1846static int
6c8eea54
JS		 1847lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1848 uint8_t *txop, uint8_t *rxop)
e2a0a9d6
JS		 1849{
1850 uint8_t guard_type = scsi_host_get_guard(sc->device->host);
6c8eea54 1851 uint8_t ret = 0;
e2a0a9d6
JS		 1852
1853 if (guard_type == SHOST_DIX_GUARD_IP) {
1854 switch (scsi_get_prot_op(sc)) {
1855 case SCSI_PROT_READ_INSERT:
1856 case SCSI_PROT_WRITE_STRIP:
6c8eea54 1857 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
4ac9b226 1858 *txop = BG_OP_IN_CSUM_OUT_NODIF;
e2a0a9d6
JS		 1859 break;
1860
1861 case SCSI_PROT_READ_STRIP:
1862 case SCSI_PROT_WRITE_INSERT:
6c8eea54 1863 *rxop = BG_OP_IN_CRC_OUT_NODIF;
4ac9b226 1864 *txop = BG_OP_IN_NODIF_OUT_CRC;
e2a0a9d6
JS		 1865 break;
1866
c6af4042
MP		 1867 case SCSI_PROT_READ_PASS:
1868 case SCSI_PROT_WRITE_PASS:
6c8eea54 1869 *rxop = BG_OP_IN_CRC_OUT_CSUM;
4ac9b226 1870 *txop = BG_OP_IN_CSUM_OUT_CRC;
e2a0a9d6
JS		 1871 break;
1872
e2a0a9d6
JS		 1873 case SCSI_PROT_NORMAL:
1874 default:
6a9c52cf 1875 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
7c56b9fd
JS		 1876 "9063 BLKGRD: Bad op/guard:%d/IP combination\n",
1877 scsi_get_prot_op(sc));
6c8eea54 1878 ret = 1;
e2a0a9d6
JS		 1879 break;
1880
1881 }
7c56b9fd 1882 } else {
e2a0a9d6
JS		 1883 switch (scsi_get_prot_op(sc)) {
1884 case SCSI_PROT_READ_STRIP:
1885 case SCSI_PROT_WRITE_INSERT:
6c8eea54 1886 *rxop = BG_OP_IN_CRC_OUT_NODIF;
4ac9b226 1887 *txop = BG_OP_IN_NODIF_OUT_CRC;
e2a0a9d6
JS		 1888 break;
1889
1890 case SCSI_PROT_READ_PASS:
1891 case SCSI_PROT_WRITE_PASS:
6c8eea54 1892 *rxop = BG_OP_IN_CRC_OUT_CRC;
4ac9b226 1893 *txop = BG_OP_IN_CRC_OUT_CRC;
e2a0a9d6
JS		 1894 break;
1895
e2a0a9d6
JS		 1896 case SCSI_PROT_READ_INSERT:
1897 case SCSI_PROT_WRITE_STRIP:
7c56b9fd 1898 *rxop = BG_OP_IN_NODIF_OUT_CRC;
4ac9b226 1899 *txop = BG_OP_IN_CRC_OUT_NODIF;
7c56b9fd
JS		 1900 break;
1901
e2a0a9d6
JS		 1902 case SCSI_PROT_NORMAL:
1903 default:
6a9c52cf 1904 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
7c56b9fd
JS		 1905 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
1906 scsi_get_prot_op(sc));
6c8eea54 1907 ret = 1;
e2a0a9d6
JS		 1908 break;
1909 }
e2a0a9d6
JS		 1910 }
1911
6c8eea54 1912 return ret;
e2a0a9d6
JS		 1913}
1914
acd6859b
JS		 1915#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1916/**
1917 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
1918 * the specified SCSI command in order to force a guard tag error.
1919 * @phba: The Hba for which this call is being executed.
1920 * @sc: The SCSI command to examine
1921 * @txopt: (out) BlockGuard operation for transmitted data
1922 * @rxopt: (out) BlockGuard operation for received data
1923 *
1924 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1925 *
1926 **/
1927static int
1928lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1929 uint8_t *txop, uint8_t *rxop)
1930{
1931 uint8_t guard_type = scsi_host_get_guard(sc->device->host);
1932 uint8_t ret = 0;
1933
1934 if (guard_type == SHOST_DIX_GUARD_IP) {
1935 switch (scsi_get_prot_op(sc)) {
1936 case SCSI_PROT_READ_INSERT:
1937 case SCSI_PROT_WRITE_STRIP:
acd6859b 1938 *rxop = BG_OP_IN_NODIF_OUT_CRC;
4ac9b226 1939 *txop = BG_OP_IN_CRC_OUT_NODIF;
acd6859b
JS		 1940 break;
1941
1942 case SCSI_PROT_READ_STRIP:
1943 case SCSI_PROT_WRITE_INSERT:
acd6859b 1944 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
4ac9b226 1945 *txop = BG_OP_IN_NODIF_OUT_CSUM;
acd6859b
JS		 1946 break;
1947
1948 case SCSI_PROT_READ_PASS:
1949 case SCSI_PROT_WRITE_PASS:
4ac9b226 1950 *rxop = BG_OP_IN_CSUM_OUT_CRC;
9a6b09c0 1951 *txop = BG_OP_IN_CRC_OUT_CSUM;
acd6859b
JS		 1952 break;
1953
1954 case SCSI_PROT_NORMAL:
1955 default:
1956 break;
1957
1958 }
1959 } else {
1960 switch (scsi_get_prot_op(sc)) {
1961 case SCSI_PROT_READ_STRIP:
1962 case SCSI_PROT_WRITE_INSERT:
acd6859b 1963 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
4ac9b226 1964 *txop = BG_OP_IN_NODIF_OUT_CSUM;
acd6859b
JS		 1965 break;
1966
1967 case SCSI_PROT_READ_PASS:
1968 case SCSI_PROT_WRITE_PASS:
4ac9b226 1969 *rxop = BG_OP_IN_CSUM_OUT_CSUM;
9a6b09c0 1970 *txop = BG_OP_IN_CSUM_OUT_CSUM;
acd6859b
JS		 1971 break;
1972
1973 case SCSI_PROT_READ_INSERT:
1974 case SCSI_PROT_WRITE_STRIP:
acd6859b 1975 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
4ac9b226 1976 *txop = BG_OP_IN_CSUM_OUT_NODIF;
acd6859b
JS		 1977 break;
1978
1979 case SCSI_PROT_NORMAL:
1980 default:
1981 break;
1982 }
1983 }
1984
1985 return ret;
1986}
1987#endif
1988
1989/**
1990 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
1991 * @phba: The Hba for which this call is being executed.
1992 * @sc: pointer to scsi command we're working on
1993 * @bpl: pointer to buffer list for protection groups
1994 * @datacnt: number of segments of data that have been dma mapped
1995 *
1996 * This function sets up BPL buffer list for protection groups of
e2a0a9d6
JS		 1997 * type LPFC_PG_TYPE_NO_DIF
1998 *
1999 * This is usually used when the HBA is instructed to generate
2000 * DIFs and insert them into data stream (or strip DIF from
2001 * incoming data stream)
2002 *
2003 * The buffer list consists of just one protection group described
2004 * below:
2005 * +-------------------------+
6c8eea54
JS		 2006 * start of prot group --> | PDE_5 |
2007 * +-------------------------+
2008 * | PDE_6 |
e2a0a9d6
JS		 2009 * +-------------------------+
2010 * | Data BDE |
2011 * +-------------------------+
2012 * |more Data BDE's ... (opt)|
2013 * +-------------------------+
2014 *
e2a0a9d6
JS		 2015 *
2016 * Note: Data s/g buffers have been dma mapped
acd6859b
JS		 2017 *
2018 * Returns the number of BDEs added to the BPL.
2019 **/
e2a0a9d6
JS		 2020static int
2021lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2022 struct ulp_bde64 *bpl, int datasegcnt)
2023{
2024 struct scatterlist *sgde = NULL; /* s/g data entry */
6c8eea54
JS		 2025 struct lpfc_pde5 *pde5 = NULL;
2026 struct lpfc_pde6 *pde6 = NULL;
e2a0a9d6 2027 dma_addr_t physaddr;
6c8eea54 2028 int i = 0, num_bde = 0, status;
e2a0a9d6 2029 int datadir = sc->sc_data_direction;
0829a19a 2030#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2031 uint32_t rc;
0829a19a 2032#endif
acd6859b 2033 uint32_t checking = 1;
e2a0a9d6 2034 uint32_t reftag;
7c56b9fd 2035 unsigned blksize;
6c8eea54 2036 uint8_t txop, rxop;
e2a0a9d6 2037
6c8eea54
JS		 2038 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2039 if (status)
e2a0a9d6
JS		 2040 goto out;
2041
6c8eea54 2042 /* extract some info from the scsi command for pde*/
e2a0a9d6 2043 blksize = lpfc_cmd_blksize(sc);
acd6859b 2044 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
e2a0a9d6 2045
f9bb2da1 2046#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2047 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2048 if (rc) {
9a6b09c0 2049 if (rc & BG_ERR_SWAP)
acd6859b 2050 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2051 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2052 checking = 0;
2053 }
f9bb2da1
JS		 2054#endif
2055
6c8eea54
JS		 2056 /* setup PDE5 with what we have */
2057 pde5 = (struct lpfc_pde5 *) bpl;
2058 memset(pde5, 0, sizeof(struct lpfc_pde5));
2059 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
6c8eea54 2060
bc73905a 2061 /* Endianness conversion if necessary for PDE5 */
589a52d6 2062 pde5->word0 = cpu_to_le32(pde5->word0);
7c56b9fd 2063 pde5->reftag = cpu_to_le32(reftag);
589a52d6 2064
6c8eea54
JS		 2065 /* advance bpl and increment bde count */
2066 num_bde++;
2067 bpl++;
2068 pde6 = (struct lpfc_pde6 *) bpl;
2069
2070 /* setup PDE6 with the rest of the info */
2071 memset(pde6, 0, sizeof(struct lpfc_pde6));
2072 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2073 bf_set(pde6_optx, pde6, txop);
2074 bf_set(pde6_oprx, pde6, rxop);
a6887e28
JS		 2075
2076 /*
2077 * We only need to check the data on READs, for WRITEs
2078 * protection data is automatically generated, not checked.
2079 */
6c8eea54 2080 if (datadir == DMA_FROM_DEVICE) {
a6887e28
JS		 2081 if (scsi_prot_flagged(sc, SCSI_PROT_GUARD_CHECK))
2082 bf_set(pde6_ce, pde6, checking);
2083 else
2084 bf_set(pde6_ce, pde6, 0);
2085
2086 if (scsi_prot_flagged(sc, SCSI_PROT_REF_CHECK))
2087 bf_set(pde6_re, pde6, checking);
2088 else
2089 bf_set(pde6_re, pde6, 0);
6c8eea54
JS		 2090 }
2091 bf_set(pde6_ai, pde6, 1);
7c56b9fd
JS		 2092 bf_set(pde6_ae, pde6, 0);
2093 bf_set(pde6_apptagval, pde6, 0);
e2a0a9d6 2094
bc73905a 2095 /* Endianness conversion if necessary for PDE6 */
589a52d6
JS		 2096 pde6->word0 = cpu_to_le32(pde6->word0);
2097 pde6->word1 = cpu_to_le32(pde6->word1);
2098 pde6->word2 = cpu_to_le32(pde6->word2);
2099
6c8eea54 2100 /* advance bpl and increment bde count */
e2a0a9d6
JS		 2101 num_bde++;
2102 bpl++;
2103
2104 /* assumption: caller has already run dma_map_sg on command data */
2105 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2106 physaddr = sg_dma_address(sgde);
2107 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
2108 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
2109 bpl->tus.f.bdeSize = sg_dma_len(sgde);
2110 if (datadir == DMA_TO_DEVICE)
2111 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2112 else
2113 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2114 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2115 bpl++;
2116 num_bde++;
2117 }
2118
2119out:
2120 return num_bde;
2121}
2122
acd6859b
JS		 2123/**
2124 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
2125 * @phba: The Hba for which this call is being executed.
2126 * @sc: pointer to scsi command we're working on
2127 * @bpl: pointer to buffer list for protection groups
2128 * @datacnt: number of segments of data that have been dma mapped
2129 * @protcnt: number of segment of protection data that have been dma mapped
2130 *
2131 * This function sets up BPL buffer list for protection groups of
2132 * type LPFC_PG_TYPE_DIF
e2a0a9d6
JS		 2133 *
2134 * This is usually used when DIFs are in their own buffers,
2135 * separate from the data. The HBA can then by instructed
2136 * to place the DIFs in the outgoing stream. For read operations,
2137 * The HBA could extract the DIFs and place it in DIF buffers.
2138 *
2139 * The buffer list for this type consists of one or more of the
2140 * protection groups described below:
2141 * +-------------------------+
6c8eea54 2142 * start of first prot group --> | PDE_5 |
e2a0a9d6 2143 * +-------------------------+
6c8eea54
JS		 2144 * | PDE_6 |
2145 * +-------------------------+
2146 * | PDE_7 (Prot BDE) |
e2a0a9d6
JS		 2147 * +-------------------------+
2148 * | Data BDE |
2149 * +-------------------------+
2150 * |more Data BDE's ... (opt)|
2151 * +-------------------------+
6c8eea54 2152 * start of new prot group --> | PDE_5 |
e2a0a9d6
JS		 2153 * +-------------------------+
2154 * | ... |
2155 * +-------------------------+
2156 *
e2a0a9d6
JS		 2157 * Note: It is assumed that both data and protection s/g buffers have been
2158 * mapped for DMA
acd6859b
JS		 2159 *
2160 * Returns the number of BDEs added to the BPL.
2161 **/
e2a0a9d6
JS		 2162static int
2163lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2164 struct ulp_bde64 *bpl, int datacnt, int protcnt)
2165{
2166 struct scatterlist *sgde = NULL; /* s/g data entry */
2167 struct scatterlist *sgpe = NULL; /* s/g prot entry */
6c8eea54
JS		 2168 struct lpfc_pde5 *pde5 = NULL;
2169 struct lpfc_pde6 *pde6 = NULL;
7f86059a 2170 struct lpfc_pde7 *pde7 = NULL;
e2a0a9d6
JS		 2171 dma_addr_t dataphysaddr, protphysaddr;
2172 unsigned short curr_data = 0, curr_prot = 0;
7f86059a
JS		 2173 unsigned int split_offset;
2174 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
e2a0a9d6
JS		 2175 unsigned int protgrp_blks, protgrp_bytes;
2176 unsigned int remainder, subtotal;
6c8eea54 2177 int status;
e2a0a9d6
JS		 2178 int datadir = sc->sc_data_direction;
2179 unsigned char pgdone = 0, alldone = 0;
2180 unsigned blksize;
0829a19a 2181#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2182 uint32_t rc;
0829a19a 2183#endif
acd6859b 2184 uint32_t checking = 1;
e2a0a9d6 2185 uint32_t reftag;
6c8eea54 2186 uint8_t txop, rxop;
e2a0a9d6
JS		 2187 int num_bde = 0;
2188
2189 sgpe = scsi_prot_sglist(sc);
2190 sgde = scsi_sglist(sc);
2191
2192 if (!sgpe || !sgde) {
2193 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
acd6859b
JS		 2194 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
2195 sgpe, sgde);
2196 return 0;
2197 }
2198
2199 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2200 if (status)
2201 goto out;
2202
2203 /* extract some info from the scsi command */
2204 blksize = lpfc_cmd_blksize(sc);
2205 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2206
2207#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2208 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2209 if (rc) {
9a6b09c0 2210 if (rc & BG_ERR_SWAP)
acd6859b 2211 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2212 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2213 checking = 0;
2214 }
2215#endif
2216
2217 split_offset = 0;
2218 do {
96f7077f
JS		 2219 /* Check to see if we ran out of space */
2220 if (num_bde >= (phba->cfg_total_seg_cnt - 2))
2221 return num_bde + 3;
2222
acd6859b
JS		 2223 /* setup PDE5 with what we have */
2224 pde5 = (struct lpfc_pde5 *) bpl;
2225 memset(pde5, 0, sizeof(struct lpfc_pde5));
2226 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
2227
2228 /* Endianness conversion if necessary for PDE5 */
2229 pde5->word0 = cpu_to_le32(pde5->word0);
2230 pde5->reftag = cpu_to_le32(reftag);
2231
2232 /* advance bpl and increment bde count */
2233 num_bde++;
2234 bpl++;
2235 pde6 = (struct lpfc_pde6 *) bpl;
2236
2237 /* setup PDE6 with the rest of the info */
2238 memset(pde6, 0, sizeof(struct lpfc_pde6));
2239 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2240 bf_set(pde6_optx, pde6, txop);
2241 bf_set(pde6_oprx, pde6, rxop);
a6887e28
JS		 2242
2243 if (scsi_prot_flagged(sc, SCSI_PROT_GUARD_CHECK))
2244 bf_set(pde6_ce, pde6, checking);
2245 else
2246 bf_set(pde6_ce, pde6, 0);
2247
2248 if (scsi_prot_flagged(sc, SCSI_PROT_REF_CHECK))
2249 bf_set(pde6_re, pde6, checking);
2250 else
2251 bf_set(pde6_re, pde6, 0);
2252
acd6859b
JS		 2253 bf_set(pde6_ai, pde6, 1);
2254 bf_set(pde6_ae, pde6, 0);
2255 bf_set(pde6_apptagval, pde6, 0);
2256
2257 /* Endianness conversion if necessary for PDE6 */
2258 pde6->word0 = cpu_to_le32(pde6->word0);
2259 pde6->word1 = cpu_to_le32(pde6->word1);
2260 pde6->word2 = cpu_to_le32(pde6->word2);
2261
2262 /* advance bpl and increment bde count */
2263 num_bde++;
2264 bpl++;
2265
2266 /* setup the first BDE that points to protection buffer */
2267 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2268 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2269
2270 /* must be integer multiple of the DIF block length */
2271 BUG_ON(protgroup_len % 8);
2272
2273 pde7 = (struct lpfc_pde7 *) bpl;
2274 memset(pde7, 0, sizeof(struct lpfc_pde7));
2275 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
2276
2277 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
2278 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
2279
2280 protgrp_blks = protgroup_len / 8;
2281 protgrp_bytes = protgrp_blks * blksize;
2282
2283 /* check if this pde is crossing the 4K boundary; if so split */
2284 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
2285 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
2286 protgroup_offset += protgroup_remainder;
2287 protgrp_blks = protgroup_remainder / 8;
2288 protgrp_bytes = protgrp_blks * blksize;
2289 } else {
2290 protgroup_offset = 0;
2291 curr_prot++;
2292 }
2293
2294 num_bde++;
2295
2296 /* setup BDE's for data blocks associated with DIF data */
2297 pgdone = 0;
2298 subtotal = 0; /* total bytes processed for current prot grp */
2299 while (!pgdone) {
96f7077f
JS		 2300 /* Check to see if we ran out of space */
2301 if (num_bde >= phba->cfg_total_seg_cnt)
2302 return num_bde + 1;
2303
acd6859b
JS		 2304 if (!sgde) {
2305 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2306 "9065 BLKGRD:%s Invalid data segment\n",
2307 __func__);
2308 return 0;
2309 }
2310 bpl++;
2311 dataphysaddr = sg_dma_address(sgde) + split_offset;
2312 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
2313 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
2314
2315 remainder = sg_dma_len(sgde) - split_offset;
2316
2317 if ((subtotal + remainder) <= protgrp_bytes) {
2318 /* we can use this whole buffer */
2319 bpl->tus.f.bdeSize = remainder;
2320 split_offset = 0;
2321
2322 if ((subtotal + remainder) == protgrp_bytes)
2323 pgdone = 1;
2324 } else {
2325 /* must split this buffer with next prot grp */
2326 bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
2327 split_offset += bpl->tus.f.bdeSize;
2328 }
2329
2330 subtotal += bpl->tus.f.bdeSize;
2331
2332 if (datadir == DMA_TO_DEVICE)
2333 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2334 else
2335 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2336 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2337
2338 num_bde++;
2339 curr_data++;
2340
2341 if (split_offset)
2342 break;
2343
2344 /* Move to the next s/g segment if possible */
2345 sgde = sg_next(sgde);
2346
2347 }
2348
2349 if (protgroup_offset) {
2350 /* update the reference tag */
2351 reftag += protgrp_blks;
2352 bpl++;
2353 continue;
2354 }
2355
2356 /* are we done ? */
2357 if (curr_prot == protcnt) {
2358 alldone = 1;
2359 } else if (curr_prot < protcnt) {
2360 /* advance to next prot buffer */
2361 sgpe = sg_next(sgpe);
2362 bpl++;
2363
2364 /* update the reference tag */
2365 reftag += protgrp_blks;
2366 } else {
2367 /* if we're here, we have a bug */
2368 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2369 "9054 BLKGRD: bug in %s\n", __func__);
2370 }
2371
2372 } while (!alldone);
2373out:
2374
2375 return num_bde;
2376}
2377
2378/**
2379 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
2380 * @phba: The Hba for which this call is being executed.
2381 * @sc: pointer to scsi command we're working on
2382 * @sgl: pointer to buffer list for protection groups
2383 * @datacnt: number of segments of data that have been dma mapped
2384 *
2385 * This function sets up SGL buffer list for protection groups of
2386 * type LPFC_PG_TYPE_NO_DIF
2387 *
2388 * This is usually used when the HBA is instructed to generate
2389 * DIFs and insert them into data stream (or strip DIF from
2390 * incoming data stream)
2391 *
2392 * The buffer list consists of just one protection group described
2393 * below:
2394 * +-------------------------+
2395 * start of prot group --> | DI_SEED |
2396 * +-------------------------+
2397 * | Data SGE |
2398 * +-------------------------+
2399 * |more Data SGE's ... (opt)|
2400 * +-------------------------+
2401 *
2402 *
2403 * Note: Data s/g buffers have been dma mapped
2404 *
2405 * Returns the number of SGEs added to the SGL.
2406 **/
2407static int
2408lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2409 struct sli4_sge *sgl, int datasegcnt)
2410{
2411 struct scatterlist *sgde = NULL; /* s/g data entry */
2412 struct sli4_sge_diseed *diseed = NULL;
2413 dma_addr_t physaddr;
2414 int i = 0, num_sge = 0, status;
acd6859b
JS		 2415 uint32_t reftag;
2416 unsigned blksize;
2417 uint8_t txop, rxop;
0829a19a 2418#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2419 uint32_t rc;
0829a19a 2420#endif
acd6859b
JS		 2421 uint32_t checking = 1;
2422 uint32_t dma_len;
2423 uint32_t dma_offset = 0;
2424
2425 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2426 if (status)
2427 goto out;
2428
2429 /* extract some info from the scsi command for pde*/
2430 blksize = lpfc_cmd_blksize(sc);
2431 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2432
2433#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2434 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2435 if (rc) {
9a6b09c0 2436 if (rc & BG_ERR_SWAP)
acd6859b 2437 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2438 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2439 checking = 0;
2440 }
2441#endif
2442
2443 /* setup DISEED with what we have */
2444 diseed = (struct sli4_sge_diseed *) sgl;
2445 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2446 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2447
2448 /* Endianness conversion if necessary */
2449 diseed->ref_tag = cpu_to_le32(reftag);
2450 diseed->ref_tag_tran = diseed->ref_tag;
2451
a6887e28
JS		 2452 /*
2453 * We only need to check the data on READs, for WRITEs
2454 * protection data is automatically generated, not checked.
2455 */
2456 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2457 if (scsi_prot_flagged(sc, SCSI_PROT_GUARD_CHECK))
2458 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2459 else
2460 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2461
2462 if (scsi_prot_flagged(sc, SCSI_PROT_REF_CHECK))
2463 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2464 else
2465 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2466 }
2467
acd6859b
JS		 2468 /* setup DISEED with the rest of the info */
2469 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2470 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
a6887e28 2471
acd6859b
JS		 2472 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2473 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2474
2475 /* Endianness conversion if necessary for DISEED */
2476 diseed->word2 = cpu_to_le32(diseed->word2);
2477 diseed->word3 = cpu_to_le32(diseed->word3);
2478
2479 /* advance bpl and increment sge count */
2480 num_sge++;
2481 sgl++;
2482
2483 /* assumption: caller has already run dma_map_sg on command data */
2484 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2485 physaddr = sg_dma_address(sgde);
2486 dma_len = sg_dma_len(sgde);
2487 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
2488 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
2489 if ((i + 1) == datasegcnt)
2490 bf_set(lpfc_sli4_sge_last, sgl, 1);
2491 else
2492 bf_set(lpfc_sli4_sge_last, sgl, 0);
2493 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2494 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2495
2496 sgl->sge_len = cpu_to_le32(dma_len);
2497 dma_offset += dma_len;
2498
2499 sgl++;
2500 num_sge++;
2501 }
2502
2503out:
2504 return num_sge;
2505}
2506
2507/**
2508 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
2509 * @phba: The Hba for which this call is being executed.
2510 * @sc: pointer to scsi command we're working on
2511 * @sgl: pointer to buffer list for protection groups
2512 * @datacnt: number of segments of data that have been dma mapped
2513 * @protcnt: number of segment of protection data that have been dma mapped
2514 *
2515 * This function sets up SGL buffer list for protection groups of
2516 * type LPFC_PG_TYPE_DIF
2517 *
2518 * This is usually used when DIFs are in their own buffers,
2519 * separate from the data. The HBA can then by instructed
2520 * to place the DIFs in the outgoing stream. For read operations,
2521 * The HBA could extract the DIFs and place it in DIF buffers.
2522 *
2523 * The buffer list for this type consists of one or more of the
2524 * protection groups described below:
2525 * +-------------------------+
2526 * start of first prot group --> | DISEED |
2527 * +-------------------------+
2528 * | DIF (Prot SGE) |
2529 * +-------------------------+
2530 * | Data SGE |
2531 * +-------------------------+
2532 * |more Data SGE's ... (opt)|
2533 * +-------------------------+
2534 * start of new prot group --> | DISEED |
2535 * +-------------------------+
2536 * | ... |
2537 * +-------------------------+
2538 *
2539 * Note: It is assumed that both data and protection s/g buffers have been
2540 * mapped for DMA
2541 *
2542 * Returns the number of SGEs added to the SGL.
2543 **/
2544static int
2545lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2546 struct sli4_sge *sgl, int datacnt, int protcnt)
2547{
2548 struct scatterlist *sgde = NULL; /* s/g data entry */
2549 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2550 struct sli4_sge_diseed *diseed = NULL;
2551 dma_addr_t dataphysaddr, protphysaddr;
2552 unsigned short curr_data = 0, curr_prot = 0;
2553 unsigned int split_offset;
2554 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2555 unsigned int protgrp_blks, protgrp_bytes;
2556 unsigned int remainder, subtotal;
2557 int status;
2558 unsigned char pgdone = 0, alldone = 0;
2559 unsigned blksize;
2560 uint32_t reftag;
2561 uint8_t txop, rxop;
2562 uint32_t dma_len;
0829a19a 2563#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2564 uint32_t rc;
0829a19a 2565#endif
acd6859b
JS		 2566 uint32_t checking = 1;
2567 uint32_t dma_offset = 0;
2568 int num_sge = 0;
2569
2570 sgpe = scsi_prot_sglist(sc);
2571 sgde = scsi_sglist(sc);
2572
2573 if (!sgpe || !sgde) {
2574 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2575 "9082 Invalid s/g entry: data=0x%p prot=0x%p\n",
e2a0a9d6
JS		 2576 sgpe, sgde);
2577 return 0;
2578 }
2579
6c8eea54
JS		 2580 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2581 if (status)
e2a0a9d6
JS		 2582 goto out;
2583
6c8eea54 2584 /* extract some info from the scsi command */
e2a0a9d6 2585 blksize = lpfc_cmd_blksize(sc);
acd6859b 2586 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
e2a0a9d6 2587
f9bb2da1 2588#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2589 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2590 if (rc) {
9a6b09c0 2591 if (rc & BG_ERR_SWAP)
acd6859b 2592 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2593 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2594 checking = 0;
2595 }
f9bb2da1
JS		 2596#endif
2597
e2a0a9d6
JS		 2598 split_offset = 0;
2599 do {
96f7077f
JS		 2600 /* Check to see if we ran out of space */
2601 if (num_sge >= (phba->cfg_total_seg_cnt - 2))
2602 return num_sge + 3;
2603
acd6859b
JS		 2604 /* setup DISEED with what we have */
2605 diseed = (struct sli4_sge_diseed *) sgl;
2606 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2607 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2608
2609 /* Endianness conversion if necessary */
2610 diseed->ref_tag = cpu_to_le32(reftag);
2611 diseed->ref_tag_tran = diseed->ref_tag;
2612
a6887e28
JS		 2613 if (scsi_prot_flagged(sc, SCSI_PROT_GUARD_CHECK)) {
2614 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2615
2616 } else {
2617 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2618 /*
2619 * When in this mode, the hardware will replace
2620 * the guard tag from the host with a
2621 * newly generated good CRC for the wire.
2622 * Switch to raw mode here to avoid this
2623 * behavior. What the host sends gets put on the wire.
2624 */
2625 if (txop == BG_OP_IN_CRC_OUT_CRC) {
2626 txop = BG_OP_RAW_MODE;
2627 rxop = BG_OP_RAW_MODE;
2628 }
2629 }
2630
2631
2632 if (scsi_prot_flagged(sc, SCSI_PROT_REF_CHECK))
2633 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2634 else
2635 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2636
acd6859b
JS		 2637 /* setup DISEED with the rest of the info */
2638 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2639 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
a6887e28 2640
acd6859b
JS		 2641 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2642 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2643
2644 /* Endianness conversion if necessary for DISEED */
2645 diseed->word2 = cpu_to_le32(diseed->word2);
2646 diseed->word3 = cpu_to_le32(diseed->word3);
2647
2648 /* advance sgl and increment bde count */
2649 num_sge++;
2650 sgl++;
e2a0a9d6
JS		 2651
2652 /* setup the first BDE that points to protection buffer */
7f86059a
JS		 2653 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2654 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
e2a0a9d6 2655
e2a0a9d6
JS		 2656 /* must be integer multiple of the DIF block length */
2657 BUG_ON(protgroup_len % 8);
2658
acd6859b
JS		 2659 /* Now setup DIF SGE */
2660 sgl->word2 = 0;
2661 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
2662 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
2663 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
2664 sgl->word2 = cpu_to_le32(sgl->word2);
7f86059a 2665
e2a0a9d6
JS		 2666 protgrp_blks = protgroup_len / 8;
2667 protgrp_bytes = protgrp_blks * blksize;
2668
acd6859b
JS		 2669 /* check if DIF SGE is crossing the 4K boundary; if so split */
2670 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
2671 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
7f86059a
JS		 2672 protgroup_offset += protgroup_remainder;
2673 protgrp_blks = protgroup_remainder / 8;
7c56b9fd 2674 protgrp_bytes = protgrp_blks * blksize;
7f86059a
JS		 2675 } else {
2676 protgroup_offset = 0;
2677 curr_prot++;
2678 }
e2a0a9d6 2679
acd6859b 2680 num_sge++;
e2a0a9d6 2681
acd6859b 2682 /* setup SGE's for data blocks associated with DIF data */
e2a0a9d6
JS		 2683 pgdone = 0;
2684 subtotal = 0; /* total bytes processed for current prot grp */
2685 while (!pgdone) {
96f7077f
JS		 2686 /* Check to see if we ran out of space */
2687 if (num_sge >= phba->cfg_total_seg_cnt)
2688 return num_sge + 1;
2689
e2a0a9d6 2690 if (!sgde) {
6a9c52cf 2691 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 2692 "9086 BLKGRD:%s Invalid data segment\n",
e2a0a9d6
JS		 2693 __func__);
2694 return 0;
2695 }
acd6859b 2696 sgl++;
e2a0a9d6 2697 dataphysaddr = sg_dma_address(sgde) + split_offset;
e2a0a9d6
JS		 2698
2699 remainder = sg_dma_len(sgde) - split_offset;
2700
2701 if ((subtotal + remainder) <= protgrp_bytes) {
2702 /* we can use this whole buffer */
acd6859b 2703 dma_len = remainder;
e2a0a9d6
JS		 2704 split_offset = 0;
2705
2706 if ((subtotal + remainder) == protgrp_bytes)
2707 pgdone = 1;
2708 } else {
2709 /* must split this buffer with next prot grp */
acd6859b
JS		 2710 dma_len = protgrp_bytes - subtotal;
2711 split_offset += dma_len;
e2a0a9d6
JS		 2712 }
2713
acd6859b 2714 subtotal += dma_len;
e2a0a9d6 2715
acd6859b
JS		 2716 sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr));
2717 sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr));
2718 bf_set(lpfc_sli4_sge_last, sgl, 0);
2719 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2720 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
e2a0a9d6 2721
acd6859b
JS		 2722 sgl->sge_len = cpu_to_le32(dma_len);
2723 dma_offset += dma_len;
2724
2725 num_sge++;
e2a0a9d6
JS		 2726 curr_data++;
2727
2728 if (split_offset)
2729 break;
2730
2731 /* Move to the next s/g segment if possible */
2732 sgde = sg_next(sgde);
2733 }
2734
7f86059a
JS		 2735 if (protgroup_offset) {
2736 /* update the reference tag */
2737 reftag += protgrp_blks;
acd6859b 2738 sgl++;
7f86059a
JS		 2739 continue;
2740 }
2741
e2a0a9d6
JS		 2742 /* are we done ? */
2743 if (curr_prot == protcnt) {
acd6859b 2744 bf_set(lpfc_sli4_sge_last, sgl, 1);
e2a0a9d6
JS		 2745 alldone = 1;
2746 } else if (curr_prot < protcnt) {
2747 /* advance to next prot buffer */
2748 sgpe = sg_next(sgpe);
acd6859b 2749 sgl++;
e2a0a9d6
JS		 2750
2751 /* update the reference tag */
2752 reftag += protgrp_blks;
2753 } else {
2754 /* if we're here, we have a bug */
6a9c52cf 2755 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 2756 "9085 BLKGRD: bug in %s\n", __func__);
e2a0a9d6
JS		 2757 }
2758
2759 } while (!alldone);
acd6859b 2760
e2a0a9d6
JS		 2761out:
2762
acd6859b 2763 return num_sge;
e2a0a9d6 2764}
7f86059a 2765
acd6859b
JS		 2766/**
2767 * lpfc_prot_group_type - Get prtotection group type of SCSI command
2768 * @phba: The Hba for which this call is being executed.
2769 * @sc: pointer to scsi command we're working on
2770 *
e2a0a9d6
JS		 2771 * Given a SCSI command that supports DIF, determine composition of protection
2772 * groups involved in setting up buffer lists
2773 *
acd6859b
JS		 2774 * Returns: Protection group type (with or without DIF)
2775 *
2776 **/
e2a0a9d6
JS		 2777static int
2778lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
2779{
2780 int ret = LPFC_PG_TYPE_INVALID;
2781 unsigned char op = scsi_get_prot_op(sc);
2782
2783 switch (op) {
2784 case SCSI_PROT_READ_STRIP:
2785 case SCSI_PROT_WRITE_INSERT:
2786 ret = LPFC_PG_TYPE_NO_DIF;
2787 break;
2788 case SCSI_PROT_READ_INSERT:
2789 case SCSI_PROT_WRITE_STRIP:
2790 case SCSI_PROT_READ_PASS:
2791 case SCSI_PROT_WRITE_PASS:
e2a0a9d6
JS		 2792 ret = LPFC_PG_TYPE_DIF_BUF;
2793 break;
2794 default:
2795 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2796 "9021 Unsupported protection op:%d\n", op);
2797 break;
2798 }
2799
2800 return ret;
2801}
2802
a6887e28
JS		 2803/**
2804 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
2805 * @phba: The Hba for which this call is being executed.
2806 * @lpfc_cmd: The scsi buffer which is going to be adjusted.
2807 *
2808 * Adjust the data length to account for how much data
2809 * is actually on the wire.
2810 *
2811 * returns the adjusted data length
2812 **/
2813static int
2814lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
2815 struct lpfc_scsi_buf *lpfc_cmd)
2816{
2817 struct scsi_cmnd *sc = lpfc_cmd->pCmd;
2818 int fcpdl;
2819
2820 fcpdl = scsi_bufflen(sc);
2821
2822 /* Check if there is protection data on the wire */
2823 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
2824 /* Read */
2825 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
2826 return fcpdl;
2827
2828 } else {
2829 /* Write */
2830 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
2831 return fcpdl;
2832 }
2833
2834 /*
2835 * If we are in DIF Type 1 mode every data block has a 8 byte
2836 * DIF (trailer) attached to it. Must ajust FCP data length.
2837 */
2838 if (scsi_prot_flagged(sc, SCSI_PROT_TRANSFER_PI))
2839 fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
2840
2841 return fcpdl;
2842}
2843
acd6859b
JS		 2844/**
2845 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
2846 * @phba: The Hba for which this call is being executed.
2847 * @lpfc_cmd: The scsi buffer which is going to be prep'ed.
2848 *
e2a0a9d6
JS		 2849 * This is the protection/DIF aware version of
2850 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
2851 * two functions eventually, but for now, it's here
acd6859b 2852 **/
e2a0a9d6 2853static int
acd6859b 2854lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
e2a0a9d6
JS		 2855 struct lpfc_scsi_buf *lpfc_cmd)
2856{
2857 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
2858 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
2859 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
2860 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
2861 uint32_t num_bde = 0;
2862 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
2863 int prot_group_type = 0;
a6887e28 2864 int fcpdl;
e2a0a9d6
JS		 2865
2866 /*
2867 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
2868 * fcp_rsp regions to the first data bde entry
2869 */
2870 bpl += 2;
2871 if (scsi_sg_count(scsi_cmnd)) {
2872 /*
2873 * The driver stores the segment count returned from pci_map_sg
2874 * because this a count of dma-mappings used to map the use_sg
2875 * pages. They are not guaranteed to be the same for those
2876 * architectures that implement an IOMMU.
2877 */
2878 datasegcnt = dma_map_sg(&phba->pcidev->dev,
2879 scsi_sglist(scsi_cmnd),
2880 scsi_sg_count(scsi_cmnd), datadir);
2881 if (unlikely(!datasegcnt))
2882 return 1;
2883
2884 lpfc_cmd->seg_cnt = datasegcnt;
96f7077f
JS		 2885
2886 /* First check if data segment count from SCSI Layer is good */
2887 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
2888 goto err;
e2a0a9d6
JS		 2889
2890 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
2891
2892 switch (prot_group_type) {
2893 case LPFC_PG_TYPE_NO_DIF:
96f7077f
JS		 2894
2895 /* Here we need to add a PDE5 and PDE6 to the count */
2896 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt)
2897 goto err;
2898
e2a0a9d6
JS		 2899 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
2900 datasegcnt);
c9404c9c 2901 /* we should have 2 or more entries in buffer list */
e2a0a9d6
JS		 2902 if (num_bde < 2)
2903 goto err;
2904 break;
96f7077f
JS		 2905
2906 case LPFC_PG_TYPE_DIF_BUF:
e2a0a9d6
JS		 2907 /*
2908 * This type indicates that protection buffers are
2909 * passed to the driver, so that needs to be prepared
2910 * for DMA
2911 */
2912 protsegcnt = dma_map_sg(&phba->pcidev->dev,
2913 scsi_prot_sglist(scsi_cmnd),
2914 scsi_prot_sg_count(scsi_cmnd), datadir);
2915 if (unlikely(!protsegcnt)) {
2916 scsi_dma_unmap(scsi_cmnd);
2917 return 1;
2918 }
2919
2920 lpfc_cmd->prot_seg_cnt = protsegcnt;
96f7077f
JS		 2921
2922 /*
2923 * There is a minimun of 4 BPLs used for every
2924 * protection data segment.
2925 */
2926 if ((lpfc_cmd->prot_seg_cnt * 4) >
2927 (phba->cfg_total_seg_cnt - 2))
2928 goto err;
e2a0a9d6
JS		 2929
2930 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
2931 datasegcnt, protsegcnt);
c9404c9c 2932 /* we should have 3 or more entries in buffer list */
96f7077f
JS		 2933 if ((num_bde < 3) ||
2934 (num_bde > phba->cfg_total_seg_cnt))
e2a0a9d6
JS		 2935 goto err;
2936 break;
96f7077f 2937
e2a0a9d6
JS		 2938 case LPFC_PG_TYPE_INVALID:
2939 default:
96f7077f
JS		 2940 scsi_dma_unmap(scsi_cmnd);
2941 lpfc_cmd->seg_cnt = 0;
2942
e2a0a9d6
JS		 2943 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2944 "9022 Unexpected protection group %i\n",
2945 prot_group_type);
2946 return 1;
2947 }
2948 }
2949
2950 /*
2951 * Finish initializing those IOCB fields that are dependent on the
2952 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
2953 * reinitialized since all iocb memory resources are used many times
2954 * for transmit, receive, and continuation bpl's.
2955 */
2956 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
2957 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
2958 iocb_cmd->ulpBdeCount = 1;
2959 iocb_cmd->ulpLe = 1;
2960
a6887e28 2961 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
e2a0a9d6
JS		 2962 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
2963
2964 /*
2965 * Due to difference in data length between DIF/non-DIF paths,
2966 * we need to set word 4 of IOCB here
2967 */
2968 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
2969
dea3101e 2970 return 0;
e2a0a9d6 2971err:
96f7077f
JS		 2972 if (lpfc_cmd->seg_cnt)
2973 scsi_dma_unmap(scsi_cmnd);
2974 if (lpfc_cmd->prot_seg_cnt)
2975 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
2976 scsi_prot_sg_count(scsi_cmnd),
2977 scsi_cmnd->sc_data_direction);
2978
e2a0a9d6 2979 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
96f7077f
JS		 2980 "9023 Cannot setup S/G List for HBA"
2981 "IO segs %d/%d BPL %d SCSI %d: %d %d\n",
2982 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
2983 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
e2a0a9d6 2984 prot_group_type, num_bde);
96f7077f
JS		 2985
2986 lpfc_cmd->seg_cnt = 0;
2987 lpfc_cmd->prot_seg_cnt = 0;
e2a0a9d6
JS		 2988 return 1;
2989}
2990
737d4248
JS		 2991/*
2992 * This function calcuates the T10 DIF guard tag
2993 * on the specified data using a CRC algorithmn
2994 * using crc_t10dif.
2995 */
2996uint16_t
2997lpfc_bg_crc(uint8_t *data, int count)
2998{
2999 uint16_t crc = 0;
3000 uint16_t x;
3001
3002 crc = crc_t10dif(data, count);
3003 x = cpu_to_be16(crc);
3004 return x;
3005}
3006
3007/*
3008 * This function calcuates the T10 DIF guard tag
3009 * on the specified data using a CSUM algorithmn
3010 * using ip_compute_csum.
3011 */
3012uint16_t
3013lpfc_bg_csum(uint8_t *data, int count)
3014{
3015 uint16_t ret;
3016
3017 ret = ip_compute_csum(data, count);
3018 return ret;
3019}
3020
3021/*
3022 * This function examines the protection data to try to determine
3023 * what type of T10-DIF error occurred.
3024 */
3025void
3026lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3027{
3028 struct scatterlist *sgpe; /* s/g prot entry */
3029 struct scatterlist *sgde; /* s/g data entry */
3030 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3031 struct scsi_dif_tuple *src = NULL;
3032 uint8_t *data_src = NULL;
3033 uint16_t guard_tag, guard_type;
3034 uint16_t start_app_tag, app_tag;
3035 uint32_t start_ref_tag, ref_tag;
3036 int prot, protsegcnt;
3037 int err_type, len, data_len;
3038 int chk_ref, chk_app, chk_guard;
3039 uint16_t sum;
3040 unsigned blksize;
3041
3042 err_type = BGS_GUARD_ERR_MASK;
3043 sum = 0;
3044 guard_tag = 0;
3045
3046 /* First check to see if there is protection data to examine */
3047 prot = scsi_get_prot_op(cmd);
3048 if ((prot == SCSI_PROT_READ_STRIP) ||
3049 (prot == SCSI_PROT_WRITE_INSERT) ||
3050 (prot == SCSI_PROT_NORMAL))
3051 goto out;
3052
3053 /* Currently the driver just supports ref_tag and guard_tag checking */
3054 chk_ref = 1;
3055 chk_app = 0;
3056 chk_guard = 0;
3057
3058 /* Setup a ptr to the protection data provided by the SCSI host */
3059 sgpe = scsi_prot_sglist(cmd);
3060 protsegcnt = lpfc_cmd->prot_seg_cnt;
3061
3062 if (sgpe && protsegcnt) {
3063
3064 /*
3065 * We will only try to verify guard tag if the segment
3066 * data length is a multiple of the blksize.
3067 */
3068 sgde = scsi_sglist(cmd);
3069 blksize = lpfc_cmd_blksize(cmd);
3070 data_src = (uint8_t *)sg_virt(sgde);
3071 data_len = sgde->length;
3072 if ((data_len & (blksize - 1)) == 0)
3073 chk_guard = 1;
3074 guard_type = scsi_host_get_guard(cmd->device->host);
3075
a6887e28 3076 start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */
737d4248
JS		 3077 start_app_tag = src->app_tag;
3078 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
3079 len = sgpe->length;
3080 while (src && protsegcnt) {
3081 while (len) {
3082
3083 /*
3084 * First check to see if a protection data
3085 * check is valid
3086 */
3087 if ((src->ref_tag == 0xffffffff) ||
3088 (src->app_tag == 0xffff)) {
3089 start_ref_tag++;
3090 goto skipit;
3091 }
3092
3093 /* App Tag checking */
3094 app_tag = src->app_tag;
3095 if (chk_app && (app_tag != start_app_tag)) {
3096 err_type = BGS_APPTAG_ERR_MASK;
3097 goto out;
3098 }
3099
3100 /* Reference Tag checking */
3101 ref_tag = be32_to_cpu(src->ref_tag);
3102 if (chk_ref && (ref_tag != start_ref_tag)) {
3103 err_type = BGS_REFTAG_ERR_MASK;
3104 goto out;
3105 }
3106 start_ref_tag++;
3107
3108 /* Guard Tag checking */
3109 if (chk_guard) {
3110 guard_tag = src->guard_tag;
3111 if (guard_type == SHOST_DIX_GUARD_IP)
3112 sum = lpfc_bg_csum(data_src,
3113 blksize);
3114 else
3115 sum = lpfc_bg_crc(data_src,
3116 blksize);
3117 if ((guard_tag != sum)) {
3118 err_type = BGS_GUARD_ERR_MASK;
3119 goto out;
3120 }
3121 }
3122skipit:
3123 len -= sizeof(struct scsi_dif_tuple);
3124 if (len < 0)
3125 len = 0;
3126 src++;
3127
3128 data_src += blksize;
3129 data_len -= blksize;
3130
3131 /*
3132 * Are we at the end of the Data segment?
3133 * The data segment is only used for Guard
3134 * tag checking.
3135 */
3136 if (chk_guard && (data_len == 0)) {
3137 chk_guard = 0;
3138 sgde = sg_next(sgde);
3139 if (!sgde)
3140 goto out;
3141
3142 data_src = (uint8_t *)sg_virt(sgde);
3143 data_len = sgde->length;
3144 if ((data_len & (blksize - 1)) == 0)
3145 chk_guard = 1;
3146 }
3147 }
3148
3149 /* Goto the next Protection data segment */
3150 sgpe = sg_next(sgpe);
3151 if (sgpe) {
3152 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
3153 len = sgpe->length;
3154 } else {
3155 src = NULL;
3156 }
3157 protsegcnt--;
3158 }
3159 }
3160out:
3161 if (err_type == BGS_GUARD_ERR_MASK) {
3162 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3163 0x10, 0x1);
3164 cmd->result = DRIVER_SENSE << 24
3165 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3166 phba->bg_guard_err_cnt++;
3167 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3168 "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n",
3169 (unsigned long)scsi_get_lba(cmd),
3170 sum, guard_tag);
3171
3172 } else if (err_type == BGS_REFTAG_ERR_MASK) {
3173 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3174 0x10, 0x3);
3175 cmd->result = DRIVER_SENSE << 24
3176 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3177
3178 phba->bg_reftag_err_cnt++;
3179 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3180 "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n",
3181 (unsigned long)scsi_get_lba(cmd),
3182 ref_tag, start_ref_tag);
3183
3184 } else if (err_type == BGS_APPTAG_ERR_MASK) {
3185 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3186 0x10, 0x2);
3187 cmd->result = DRIVER_SENSE << 24
3188 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3189
3190 phba->bg_apptag_err_cnt++;
3191 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3192 "9041 BLKGRD: LBA %lx app_tag error %x != %x\n",
3193 (unsigned long)scsi_get_lba(cmd),
3194 app_tag, start_app_tag);
3195 }
3196}
3197
3198
e2a0a9d6
JS		 3199/*
3200 * This function checks for BlockGuard errors detected by
3201 * the HBA. In case of errors, the ASC/ASCQ fields in the
3202 * sense buffer will be set accordingly, paired with
3203 * ILLEGAL_REQUEST to signal to the kernel that the HBA
3204 * detected corruption.
3205 *
3206 * Returns:
3207 * 0 - No error found
3208 * 1 - BlockGuard error found
3209 * -1 - Internal error (bad profile, ...etc)
3210 */
3211static int
3212lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
3213 struct lpfc_iocbq *pIocbOut)
3214{
3215 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3216 struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
3217 int ret = 0;
3218 uint32_t bghm = bgf->bghm;
3219 uint32_t bgstat = bgf->bgstat;
3220 uint64_t failing_sector = 0;
3221
e2a0a9d6
JS		 3222 spin_lock(&_dump_buf_lock);
3223 if (!_dump_buf_done) {
6a9c52cf
JS		 3224 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
3225 " Data for %u blocks to debugfs\n",
e2a0a9d6 3226 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
6a9c52cf 3227 lpfc_debug_save_data(phba, cmd);
e2a0a9d6
JS		 3228
3229 /* If we have a prot sgl, save the DIF buffer */
3230 if (lpfc_prot_group_type(phba, cmd) ==
3231 LPFC_PG_TYPE_DIF_BUF) {
6a9c52cf
JS		 3232 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
3233 "Saving DIF for %u blocks to debugfs\n",
3234 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
3235 lpfc_debug_save_dif(phba, cmd);
e2a0a9d6
JS		 3236 }
3237
3238 _dump_buf_done = 1;
3239 }
3240 spin_unlock(&_dump_buf_lock);
3241
3242 if (lpfc_bgs_get_invalid_prof(bgstat)) {
3243 cmd->result = ScsiResult(DID_ERROR, 0);
737d4248
JS		 3244 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3245 "9072 BLKGRD: Invalid BG Profile in cmd"
3246 " 0x%x lba 0x%llx blk cnt 0x%x "
3247 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3248 (unsigned long long)scsi_get_lba(cmd),
3249 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3250 ret = (-1);
3251 goto out;
3252 }
3253
3254 if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
3255 cmd->result = ScsiResult(DID_ERROR, 0);
737d4248
JS		 3256 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3257 "9073 BLKGRD: Invalid BG PDIF Block in cmd"
3258 " 0x%x lba 0x%llx blk cnt 0x%x "
3259 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3260 (unsigned long long)scsi_get_lba(cmd),
3261 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3262 ret = (-1);
3263 goto out;
3264 }
3265
3266 if (lpfc_bgs_get_guard_err(bgstat)) {
3267 ret = 1;
3268
3269 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3270 0x10, 0x1);
1c9fbafc 3271 cmd->result = DRIVER_SENSE << 24
e2a0a9d6
JS		 3272 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3273 phba->bg_guard_err_cnt++;
737d4248
JS		 3274 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3275 "9055 BLKGRD: Guard Tag error in cmd"
3276 " 0x%x lba 0x%llx blk cnt 0x%x "
3277 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3278 (unsigned long long)scsi_get_lba(cmd),
3279 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3280 }
3281
3282 if (lpfc_bgs_get_reftag_err(bgstat)) {
3283 ret = 1;
3284
3285 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3286 0x10, 0x3);
1c9fbafc 3287 cmd->result = DRIVER_SENSE << 24
e2a0a9d6
JS		 3288 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3289
3290 phba->bg_reftag_err_cnt++;
737d4248
JS		 3291 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3292 "9056 BLKGRD: Ref Tag error in cmd"
3293 " 0x%x lba 0x%llx blk cnt 0x%x "
3294 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3295 (unsigned long long)scsi_get_lba(cmd),
3296 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3297 }
3298
3299 if (lpfc_bgs_get_apptag_err(bgstat)) {
3300 ret = 1;
3301
3302 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3303 0x10, 0x2);
1c9fbafc 3304 cmd->result = DRIVER_SENSE << 24
e2a0a9d6
JS		 3305 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3306
3307 phba->bg_apptag_err_cnt++;
737d4248
JS		 3308 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3309 "9061 BLKGRD: App Tag error in cmd"
3310 " 0x%x lba 0x%llx blk cnt 0x%x "
3311 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3312 (unsigned long long)scsi_get_lba(cmd),
3313 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3314 }
3315
3316 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
3317 /*
3318 * setup sense data descriptor 0 per SPC-4 as an information
7c56b9fd
JS		 3319 * field, and put the failing LBA in it.
3320 * This code assumes there was also a guard/app/ref tag error
3321 * indication.
e2a0a9d6 3322 */
7c56b9fd
JS		 3323 cmd->sense_buffer[7] = 0xc; /* Additional sense length */
3324 cmd->sense_buffer[8] = 0; /* Information descriptor type */
3325 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
3326 cmd->sense_buffer[10] = 0x80; /* Validity bit */
acd6859b
JS		 3327
3328 /* bghm is a "on the wire" FC frame based count */
3329 switch (scsi_get_prot_op(cmd)) {
3330 case SCSI_PROT_READ_INSERT:
3331 case SCSI_PROT_WRITE_STRIP:
3332 bghm /= cmd->device->sector_size;
3333 break;
3334 case SCSI_PROT_READ_STRIP:
3335 case SCSI_PROT_WRITE_INSERT:
3336 case SCSI_PROT_READ_PASS:
3337 case SCSI_PROT_WRITE_PASS:
3338 bghm /= (cmd->device->sector_size +
3339 sizeof(struct scsi_dif_tuple));
3340 break;
3341 }
e2a0a9d6
JS		 3342
3343 failing_sector = scsi_get_lba(cmd);
3344 failing_sector += bghm;
3345
7c56b9fd
JS		 3346 /* Descriptor Information */
3347 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
e2a0a9d6
JS		 3348 }
3349
3350 if (!ret) {
3351 /* No error was reported - problem in FW? */
737d4248
JS		 3352 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3353 "9057 BLKGRD: Unknown error in cmd"
3354 " 0x%x lba 0x%llx blk cnt 0x%x "
3355 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3356 (unsigned long long)scsi_get_lba(cmd),
3357 blk_rq_sectors(cmd->request), bgstat, bghm);
3358
3359 /* Calcuate what type of error it was */
3360 lpfc_calc_bg_err(phba, lpfc_cmd);
e2a0a9d6 3361 }
e2a0a9d6
JS		 3362out:
3363 return ret;
dea3101e
JB		 3364}
3365
da0436e9
JS		 3366/**
3367 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3368 * @phba: The Hba for which this call is being executed.
3369 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3370 *
3371 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3372 * field of @lpfc_cmd for device with SLI-4 interface spec.
3373 *
3374 * Return codes:
6c8eea54
JS		 3375 * 1 - Error
3376 * 0 - Success
da0436e9
JS		 3377 **/
3378static int
3379lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3380{
3381 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3382 struct scatterlist *sgel = NULL;
3383 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3384 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
fedd3b7b 3385 struct sli4_sge *first_data_sgl;
da0436e9
JS		 3386 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3387 dma_addr_t physaddr;
3388 uint32_t num_bde = 0;
3389 uint32_t dma_len;
3390 uint32_t dma_offset = 0;
3391 int nseg;
fedd3b7b 3392 struct ulp_bde64 *bde;
da0436e9
JS		 3393
3394 /*
3395 * There are three possibilities here - use scatter-gather segment, use
3396 * the single mapping, or neither. Start the lpfc command prep by
3397 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
3398 * data bde entry.
3399 */
3400 if (scsi_sg_count(scsi_cmnd)) {
3401 /*
3402 * The driver stores the segment count returned from pci_map_sg
3403 * because this a count of dma-mappings used to map the use_sg
3404 * pages. They are not guaranteed to be the same for those
3405 * architectures that implement an IOMMU.
3406 */
3407
3408 nseg = scsi_dma_map(scsi_cmnd);
3409 if (unlikely(!nseg))
3410 return 1;
3411 sgl += 1;
3412 /* clear the last flag in the fcp_rsp map entry */
3413 sgl->word2 = le32_to_cpu(sgl->word2);
3414 bf_set(lpfc_sli4_sge_last, sgl, 0);
3415 sgl->word2 = cpu_to_le32(sgl->word2);
3416 sgl += 1;
fedd3b7b 3417 first_data_sgl = sgl;
da0436e9
JS		 3418 lpfc_cmd->seg_cnt = nseg;
3419 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
6a9c52cf
JS		 3420 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
3421 " %s: Too many sg segments from "
3422 "dma_map_sg. Config %d, seg_cnt %d\n",
3423 __func__, phba->cfg_sg_seg_cnt,
da0436e9 3424 lpfc_cmd->seg_cnt);
96f7077f 3425 lpfc_cmd->seg_cnt = 0;
da0436e9
JS		 3426 scsi_dma_unmap(scsi_cmnd);
3427 return 1;
3428 }
3429
3430 /*
3431 * The driver established a maximum scatter-gather segment count
3432 * during probe that limits the number of sg elements in any
3433 * single scsi command. Just run through the seg_cnt and format
3434 * the sge's.
3435 * When using SLI-3 the driver will try to fit all the BDEs into
3436 * the IOCB. If it can't then the BDEs get added to a BPL as it
3437 * does for SLI-2 mode.
3438 */
3439 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
3440 physaddr = sg_dma_address(sgel);
3441 dma_len = sg_dma_len(sgel);
da0436e9
JS		 3442 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
3443 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
0558056c 3444 sgl->word2 = le32_to_cpu(sgl->word2);
da0436e9
JS		 3445 if ((num_bde + 1) == nseg)
3446 bf_set(lpfc_sli4_sge_last, sgl, 1);
3447 else
3448 bf_set(lpfc_sli4_sge_last, sgl, 0);
3449 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
f9bb2da1 3450 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
da0436e9 3451 sgl->word2 = cpu_to_le32(sgl->word2);
28baac74 3452 sgl->sge_len = cpu_to_le32(dma_len);
da0436e9
JS		 3453 dma_offset += dma_len;
3454 sgl++;
3455 }
fedd3b7b
JS		 3456 /* setup the performance hint (first data BDE) if enabled */
3457 if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) {
3458 bde = (struct ulp_bde64 *)
3459 &(iocb_cmd->unsli3.sli3Words[5]);
3460 bde->addrLow = first_data_sgl->addr_lo;
3461 bde->addrHigh = first_data_sgl->addr_hi;
3462 bde->tus.f.bdeSize =
3463 le32_to_cpu(first_data_sgl->sge_len);
3464 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3465 bde->tus.w = cpu_to_le32(bde->tus.w);
3466 }
da0436e9
JS		 3467 } else {
3468 sgl += 1;
3469 /* clear the last flag in the fcp_rsp map entry */
3470 sgl->word2 = le32_to_cpu(sgl->word2);
3471 bf_set(lpfc_sli4_sge_last, sgl, 1);
3472 sgl->word2 = cpu_to_le32(sgl->word2);
3473 }
3474
3475 /*
3476 * Finish initializing those IOCB fields that are dependent on the
3477 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
3478 * explicitly reinitialized.
3479 * all iocb memory resources are reused.
3480 */
3481 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
3482
3483 /*
3484 * Due to difference in data length between DIF/non-DIF paths,
3485 * we need to set word 4 of IOCB here
3486 */
3487 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
3488 return 0;
3489}
3490
acd6859b
JS		 3491/**
3492 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3493 * @phba: The Hba for which this call is being executed.
3494 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3495 *
3496 * This is the protection/DIF aware version of
3497 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
3498 * two functions eventually, but for now, it's here
3499 **/
3500static int
3501lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
3502 struct lpfc_scsi_buf *lpfc_cmd)
3503{
3504 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3505 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3506 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl);
3507 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
96f7077f 3508 uint32_t num_sge = 0;
acd6859b
JS		 3509 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
3510 int prot_group_type = 0;
3511 int fcpdl;
3512
3513 /*
3514 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
96f7077f 3515 * fcp_rsp regions to the first data sge entry
acd6859b
JS		 3516 */
3517 if (scsi_sg_count(scsi_cmnd)) {
3518 /*
3519 * The driver stores the segment count returned from pci_map_sg
3520 * because this a count of dma-mappings used to map the use_sg
3521 * pages. They are not guaranteed to be the same for those
3522 * architectures that implement an IOMMU.
3523 */
3524 datasegcnt = dma_map_sg(&phba->pcidev->dev,
3525 scsi_sglist(scsi_cmnd),
3526 scsi_sg_count(scsi_cmnd), datadir);
3527 if (unlikely(!datasegcnt))
3528 return 1;
3529
3530 sgl += 1;
3531 /* clear the last flag in the fcp_rsp map entry */
3532 sgl->word2 = le32_to_cpu(sgl->word2);
3533 bf_set(lpfc_sli4_sge_last, sgl, 0);
3534 sgl->word2 = cpu_to_le32(sgl->word2);
3535
3536 sgl += 1;
3537 lpfc_cmd->seg_cnt = datasegcnt;
96f7077f
JS		 3538
3539 /* First check if data segment count from SCSI Layer is good */
3540 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
3541 goto err;
acd6859b
JS		 3542
3543 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
3544
3545 switch (prot_group_type) {
3546 case LPFC_PG_TYPE_NO_DIF:
96f7077f
JS		 3547 /* Here we need to add a DISEED to the count */
3548 if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt)
3549 goto err;
3550
3551 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
acd6859b 3552 datasegcnt);
96f7077f 3553
acd6859b 3554 /* we should have 2 or more entries in buffer list */
96f7077f 3555 if (num_sge < 2)
acd6859b
JS		 3556 goto err;
3557 break;
96f7077f
JS		 3558
3559 case LPFC_PG_TYPE_DIF_BUF:
acd6859b
JS		 3560 /*
3561 * This type indicates that protection buffers are
3562 * passed to the driver, so that needs to be prepared
3563 * for DMA
3564 */
3565 protsegcnt = dma_map_sg(&phba->pcidev->dev,
3566 scsi_prot_sglist(scsi_cmnd),
3567 scsi_prot_sg_count(scsi_cmnd), datadir);
3568 if (unlikely(!protsegcnt)) {
3569 scsi_dma_unmap(scsi_cmnd);
3570 return 1;
3571 }
3572
3573 lpfc_cmd->prot_seg_cnt = protsegcnt;
96f7077f
JS		 3574 /*
3575 * There is a minimun of 3 SGEs used for every
3576 * protection data segment.
3577 */
3578 if ((lpfc_cmd->prot_seg_cnt * 3) >
3579 (phba->cfg_total_seg_cnt - 2))
3580 goto err;
acd6859b 3581
96f7077f 3582 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
acd6859b 3583 datasegcnt, protsegcnt);
96f7077f 3584
acd6859b 3585 /* we should have 3 or more entries in buffer list */
96f7077f
JS		 3586 if ((num_sge < 3) ||
3587 (num_sge > phba->cfg_total_seg_cnt))
acd6859b
JS		 3588 goto err;
3589 break;
96f7077f 3590
acd6859b
JS		 3591 case LPFC_PG_TYPE_INVALID:
3592 default:
96f7077f
JS		 3593 scsi_dma_unmap(scsi_cmnd);
3594 lpfc_cmd->seg_cnt = 0;
3595
acd6859b
JS		 3596 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3597 "9083 Unexpected protection group %i\n",
3598 prot_group_type);
3599 return 1;
3600 }
3601 }
3602
8012cc38
JS		 3603 switch (scsi_get_prot_op(scsi_cmnd)) {
3604 case SCSI_PROT_WRITE_STRIP:
3605 case SCSI_PROT_READ_STRIP:
3606 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
3607 break;
3608 case SCSI_PROT_WRITE_INSERT:
3609 case SCSI_PROT_READ_INSERT:
3610 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
3611 break;
3612 case SCSI_PROT_WRITE_PASS:
3613 case SCSI_PROT_READ_PASS:
3614 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
3615 break;
3616 }
3617
acd6859b 3618 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
acd6859b
JS		 3619 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
3620
3621 /*
3622 * Due to difference in data length between DIF/non-DIF paths,
3623 * we need to set word 4 of IOCB here
3624 */
3625 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
acd6859b
JS		 3626
3627 return 0;
3628err:
96f7077f
JS		 3629 if (lpfc_cmd->seg_cnt)
3630 scsi_dma_unmap(scsi_cmnd);
3631 if (lpfc_cmd->prot_seg_cnt)
3632 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
3633 scsi_prot_sg_count(scsi_cmnd),
3634 scsi_cmnd->sc_data_direction);
3635
acd6859b 3636 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
96f7077f
JS		 3637 "9084 Cannot setup S/G List for HBA"
3638 "IO segs %d/%d SGL %d SCSI %d: %d %d\n",
3639 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
3640 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
3641 prot_group_type, num_sge);
3642
3643 lpfc_cmd->seg_cnt = 0;
3644 lpfc_cmd->prot_seg_cnt = 0;
acd6859b
JS		 3645 return 1;
3646}
3647
3772a991
JS		 3648/**
3649 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3650 * @phba: The Hba for which this call is being executed.
3651 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3652 *
3653 * This routine wraps the actual DMA mapping function pointer from the
3654 * lpfc_hba struct.
3655 *
3656 * Return codes:
6c8eea54
JS		 3657 * 1 - Error
3658 * 0 - Success
3772a991
JS		 3659 **/
3660static inline int
3661lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3662{
3663 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
3664}
3665
acd6859b
JS		 3666/**
3667 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3668 * using BlockGuard.
3669 * @phba: The Hba for which this call is being executed.
3670 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3671 *
3672 * This routine wraps the actual DMA mapping function pointer from the
3673 * lpfc_hba struct.
3674 *
3675 * Return codes:
3676 * 1 - Error
3677 * 0 - Success
3678 **/
3679static inline int
3680lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3681{
3682 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
3683}
3684
ea2151b4 3685/**
3621a710 3686 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
ea2151b4
JS		 3687 * @phba: Pointer to hba context object.
3688 * @vport: Pointer to vport object.
3689 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
3690 * @rsp_iocb: Pointer to response iocb object which reported error.
3691 *
3692 * This function posts an event when there is a SCSI command reporting
3693 * error from the scsi device.
3694 **/
3695static void
3696lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
3697 struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
3698 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3699 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3700 uint32_t resp_info = fcprsp->rspStatus2;
3701 uint32_t scsi_status = fcprsp->rspStatus3;
3702 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3703 struct lpfc_fast_path_event *fast_path_evt = NULL;
3704 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
3705 unsigned long flags;
3706
5989b8d4
JS		 3707 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
3708 return;
3709
ea2151b4
JS		 3710 /* If there is queuefull or busy condition send a scsi event */
3711 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
3712 (cmnd->result == SAM_STAT_BUSY)) {
3713 fast_path_evt = lpfc_alloc_fast_evt(phba);
3714 if (!fast_path_evt)
3715 return;
3716 fast_path_evt->un.scsi_evt.event_type =
3717 FC_REG_SCSI_EVENT;
3718 fast_path_evt->un.scsi_evt.subcategory =
3719 (cmnd->result == SAM_STAT_TASK_SET_FULL) ?
3720 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
3721 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
3722 memcpy(&fast_path_evt->un.scsi_evt.wwpn,
3723 &pnode->nlp_portname, sizeof(struct lpfc_name));
3724 memcpy(&fast_path_evt->un.scsi_evt.wwnn,
3725 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3726 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
3727 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
3728 fast_path_evt = lpfc_alloc_fast_evt(phba);
3729 if (!fast_path_evt)
3730 return;
3731 fast_path_evt->un.check_cond_evt.scsi_event.event_type =
3732 FC_REG_SCSI_EVENT;
3733 fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
3734 LPFC_EVENT_CHECK_COND;
3735 fast_path_evt->un.check_cond_evt.scsi_event.lun =
3736 cmnd->device->lun;
3737 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
3738 &pnode->nlp_portname, sizeof(struct lpfc_name));
3739 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
3740 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3741 fast_path_evt->un.check_cond_evt.sense_key =
3742 cmnd->sense_buffer[2] & 0xf;
3743 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
3744 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
3745 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3746 fcpi_parm &&
3747 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
3748 ((scsi_status == SAM_STAT_GOOD) &&
3749 !(resp_info & (RESID_UNDER | RESID_OVER))))) {
3750 /*
3751 * If status is good or resid does not match with fcp_param and
3752 * there is valid fcpi_parm, then there is a read_check error
3753 */
3754 fast_path_evt = lpfc_alloc_fast_evt(phba);
3755 if (!fast_path_evt)
3756 return;
3757 fast_path_evt->un.read_check_error.header.event_type =
3758 FC_REG_FABRIC_EVENT;
3759 fast_path_evt->un.read_check_error.header.subcategory =
3760 LPFC_EVENT_FCPRDCHKERR;
3761 memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
3762 &pnode->nlp_portname, sizeof(struct lpfc_name));
3763 memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
3764 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3765 fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
3766 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
3767 fast_path_evt->un.read_check_error.fcpiparam =
3768 fcpi_parm;
3769 } else
3770 return;
3771
3772 fast_path_evt->vport = vport;
3773 spin_lock_irqsave(&phba->hbalock, flags);
3774 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
3775 spin_unlock_irqrestore(&phba->hbalock, flags);
3776 lpfc_worker_wake_up(phba);
3777 return;
3778}
9bad7671
JS		 3779
3780/**
f1126688 3781 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
3772a991 3782 * @phba: The HBA for which this call is being executed.
9bad7671
JS		 3783 * @psb: The scsi buffer which is going to be un-mapped.
3784 *
3785 * This routine does DMA un-mapping of scatter gather list of scsi command
3772a991 3786 * field of @lpfc_cmd for device with SLI-3 interface spec.
9bad7671 3787 **/
bcf4dbfa 3788static void
f1126688 3789lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
bcf4dbfa
JS		 3790{
3791 /*
3792 * There are only two special cases to consider. (1) the scsi command
3793 * requested scatter-gather usage or (2) the scsi command allocated
3794 * a request buffer, but did not request use_sg. There is a third
3795 * case, but it does not require resource deallocation.
3796 */
a0b4f78f
FT		 3797 if (psb->seg_cnt > 0)
3798 scsi_dma_unmap(psb->pCmd);
e2a0a9d6
JS		 3799 if (psb->prot_seg_cnt > 0)
3800 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
3801 scsi_prot_sg_count(psb->pCmd),
3802 psb->pCmd->sc_data_direction);
bcf4dbfa
JS		 3803}
3804
9bad7671 3805/**
3621a710 3806 * lpfc_handler_fcp_err - FCP response handler
9bad7671
JS		 3807 * @vport: The virtual port for which this call is being executed.
3808 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
3809 * @rsp_iocb: The response IOCB which contains FCP error.
3810 *
3811 * This routine is called to process response IOCB with status field
3812 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
3813 * based upon SCSI and FCP error.
3814 **/
dea3101e 3815static void
2e0fef85
JS		 3816lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
3817 struct lpfc_iocbq *rsp_iocb)
dea3101e
JB		 3818{
3819 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3820 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
3821 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
7054a606 3822 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
dea3101e
JB		 3823 uint32_t resp_info = fcprsp->rspStatus2;
3824 uint32_t scsi_status = fcprsp->rspStatus3;
c7743956 3825 uint32_t *lp;
dea3101e
JB		 3826 uint32_t host_status = DID_OK;
3827 uint32_t rsplen = 0;
c7743956 3828 uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
dea3101e 3829
ea2151b4 3830
dea3101e
JB		 3831 /*
3832 * If this is a task management command, there is no
3833 * scsi packet associated with this lpfc_cmd. The driver
3834 * consumes it.
3835 */
3836 if (fcpcmd->fcpCntl2) {
3837 scsi_status = 0;
3838 goto out;
3839 }
3840
6a9c52cf
JS		 3841 if (resp_info & RSP_LEN_VALID) {
3842 rsplen = be32_to_cpu(fcprsp->rspRspLen);
e40a02c1 3843 if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
6a9c52cf
JS		 3844 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3845 "2719 Invalid response length: "
3846 "tgt x%x lun x%x cmnd x%x rsplen x%x\n",
3847 cmnd->device->id,
3848 cmnd->device->lun, cmnd->cmnd[0],
3849 rsplen);
3850 host_status = DID_ERROR;
3851 goto out;
3852 }
e40a02c1
JS		 3853 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
3854 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3855 "2757 Protocol failure detected during "
3856 "processing of FCP I/O op: "
3857 "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n",
3858 cmnd->device->id,
3859 cmnd->device->lun, cmnd->cmnd[0],
3860 fcprsp->rspInfo3);
3861 host_status = DID_ERROR;
3862 goto out;
3863 }
6a9c52cf
JS		 3864 }
3865
c7743956
JS		 3866 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
3867 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
3868 if (snslen > SCSI_SENSE_BUFFERSIZE)
3869 snslen = SCSI_SENSE_BUFFERSIZE;
3870
3871 if (resp_info & RSP_LEN_VALID)
3872 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3873 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
3874 }
3875 lp = (uint32_t *)cmnd->sense_buffer;
3876
aa1c7ee7
JS		 3877 /* special handling for under run conditions */
3878 if (!scsi_status && (resp_info & RESID_UNDER)) {
3879 /* don't log under runs if fcp set... */
3880 if (vport->cfg_log_verbose & LOG_FCP)
3881 logit = LOG_FCP_ERROR;
3882 /* unless operator says so */
3883 if (vport->cfg_log_verbose & LOG_FCP_UNDER)
3884 logit = LOG_FCP_UNDER;
3885 }
c7743956 3886
e8b62011 3887 lpfc_printf_vlog(vport, KERN_WARNING, logit,
e2a0a9d6 3888 "9024 FCP command x%x failed: x%x SNS x%x x%x "
e8b62011
JS		 3889 "Data: x%x x%x x%x x%x x%x\n",
3890 cmnd->cmnd[0], scsi_status,
3891 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
3892 be32_to_cpu(fcprsp->rspResId),
3893 be32_to_cpu(fcprsp->rspSnsLen),
3894 be32_to_cpu(fcprsp->rspRspLen),
3895 fcprsp->rspInfo3);
dea3101e 3896
a0b4f78f 3897 scsi_set_resid(cmnd, 0);
dea3101e 3898 if (resp_info & RESID_UNDER) {
a0b4f78f 3899 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
dea3101e 3900
73d91e50 3901 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
e2a0a9d6 3902 "9025 FCP Read Underrun, expected %d, "
e8b62011
JS		 3903 "residual %d Data: x%x x%x x%x\n",
3904 be32_to_cpu(fcpcmd->fcpDl),
3905 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
3906 cmnd->underflow);
dea3101e 3907
7054a606
JS		 3908 /*
3909 * If there is an under run check if under run reported by
3910 * storage array is same as the under run reported by HBA.
3911 * If this is not same, there is a dropped frame.
3912 */
3913 if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3914 fcpi_parm &&
a0b4f78f 3915 (scsi_get_resid(cmnd) != fcpi_parm)) {
e8b62011
JS		 3916 lpfc_printf_vlog(vport, KERN_WARNING,
3917 LOG_FCP | LOG_FCP_ERROR,
e2a0a9d6 3918 "9026 FCP Read Check Error "
e8b62011
JS		 3919 "and Underrun Data: x%x x%x x%x x%x\n",
3920 be32_to_cpu(fcpcmd->fcpDl),
3921 scsi_get_resid(cmnd), fcpi_parm,
3922 cmnd->cmnd[0]);
a0b4f78f 3923 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
7054a606
JS		 3924 host_status = DID_ERROR;
3925 }
dea3101e
JB		 3926 /*
3927 * The cmnd->underflow is the minimum number of bytes that must
25985edc 3928 * be transferred for this command. Provided a sense condition
dea3101e
JB		 3929 * is not present, make sure the actual amount transferred is at
3930 * least the underflow value or fail.
3931 */
3932 if (!(resp_info & SNS_LEN_VALID) &&
3933 (scsi_status == SAM_STAT_GOOD) &&
a0b4f78f
FT		 3934 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
3935 < cmnd->underflow)) {
e8b62011 3936 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
e2a0a9d6 3937 "9027 FCP command x%x residual "
e8b62011
JS		 3938 "underrun converted to error "
3939 "Data: x%x x%x x%x\n",
66dbfbe6 3940 cmnd->cmnd[0], scsi_bufflen(cmnd),
e8b62011 3941 scsi_get_resid(cmnd), cmnd->underflow);
dea3101e
JB		 3942 host_status = DID_ERROR;
3943 }
3944 } else if (resp_info & RESID_OVER) {
e8b62011 3945 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
e2a0a9d6 3946 "9028 FCP command x%x residual overrun error. "
e4e74273 3947 "Data: x%x x%x\n", cmnd->cmnd[0],
e8b62011 3948 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
dea3101e
JB		 3949 host_status = DID_ERROR;
3950
3951 /*
3952 * Check SLI validation that all the transfer was actually done
582dd796 3953 * (fcpi_parm should be zero).
dea3101e 3954 */
582dd796 3955 } else if (fcpi_parm) {
e8b62011 3956 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
582dd796 3957 "9029 FCP Data Transfer Check Error: "
eee8877e 3958 "x%x x%x x%x x%x x%x\n",
e8b62011
JS		 3959 be32_to_cpu(fcpcmd->fcpDl),
3960 be32_to_cpu(fcprsp->rspResId),
eee8877e
JS		 3961 fcpi_parm, cmnd->cmnd[0], scsi_status);
3962 switch (scsi_status) {
3963 case SAM_STAT_GOOD:
3964 case SAM_STAT_CHECK_CONDITION:
3965 /* Fabric dropped a data frame. Fail any successful
3966 * command in which we detected dropped frames.
3967 * A status of good or some check conditions could
3968 * be considered a successful command.
3969 */
3970 host_status = DID_ERROR;
3971 break;
3972 }
a0b4f78f 3973 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
dea3101e
JB		 3974 }
3975
3976 out:
3977 cmnd->result = ScsiResult(host_status, scsi_status);
ea2151b4 3978 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
dea3101e
JB		 3979}
3980
9bad7671 3981/**
3621a710 3982 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
9bad7671
JS		 3983 * @phba: The Hba for which this call is being executed.
3984 * @pIocbIn: The command IOCBQ for the scsi cmnd.
3772a991 3985 * @pIocbOut: The response IOCBQ for the scsi cmnd.
9bad7671
JS		 3986 *
3987 * This routine assigns scsi command result by looking into response IOCB
3988 * status field appropriately. This routine handles QUEUE FULL condition as
3989 * well by ramping down device queue depth.
3990 **/
dea3101e
JB		 3991static void
3992lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
3993 struct lpfc_iocbq *pIocbOut)
3994{
3995 struct lpfc_scsi_buf *lpfc_cmd =
3996 (struct lpfc_scsi_buf *) pIocbIn->context1;
2e0fef85 3997 struct lpfc_vport *vport = pIocbIn->vport;
dea3101e
JB		 3998 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
3999 struct lpfc_nodelist *pnode = rdata->pnode;
75baf696 4000 struct scsi_cmnd *cmd;
445cf4f4 4001 int result;
a257bf90 4002 struct scsi_device *tmp_sdev;
5ffc266e 4003 int depth;
fa61a54e 4004 unsigned long flags;
ea2151b4 4005 struct lpfc_fast_path_event *fast_path_evt;
75baf696 4006 struct Scsi_Host *shost;
a257bf90 4007 uint32_t queue_depth, scsi_id;
73d91e50 4008 uint32_t logit = LOG_FCP;
dea3101e 4009
75baf696
JS		 4010 /* Sanity check on return of outstanding command */
4011 if (!(lpfc_cmd->pCmd))
4012 return;
4013 cmd = lpfc_cmd->pCmd;
4014 shost = cmd->device->host;
4015
e3d2b802 4016 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
dea3101e 4017 lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
341af102
JS		 4018 /* pick up SLI4 exhange busy status from HBA */
4019 lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
4020
9a6b09c0
JS		 4021#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4022 if (lpfc_cmd->prot_data_type) {
4023 struct scsi_dif_tuple *src = NULL;
4024
4025 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
4026 /*
4027 * Used to restore any changes to protection
4028 * data for error injection.
4029 */
4030 switch (lpfc_cmd->prot_data_type) {
4031 case LPFC_INJERR_REFTAG:
4032 src->ref_tag =
4033 lpfc_cmd->prot_data;
4034 break;
4035 case LPFC_INJERR_APPTAG:
4036 src->app_tag =
4037 (uint16_t)lpfc_cmd->prot_data;
4038 break;
4039 case LPFC_INJERR_GUARD:
4040 src->guard_tag =
4041 (uint16_t)lpfc_cmd->prot_data;
4042 break;
4043 default:
4044 break;
4045 }
4046
4047 lpfc_cmd->prot_data = 0;
4048 lpfc_cmd->prot_data_type = 0;
4049 lpfc_cmd->prot_data_segment = NULL;
4050 }
4051#endif
109f6ed0
JS		 4052 if (pnode && NLP_CHK_NODE_ACT(pnode))
4053 atomic_dec(&pnode->cmd_pending);
dea3101e
JB		 4054
4055 if (lpfc_cmd->status) {
4056 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
4057 (lpfc_cmd->result & IOERR_DRVR_MASK))
4058 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
4059 else if (lpfc_cmd->status >= IOSTAT_CNT)
4060 lpfc_cmd->status = IOSTAT_DEFAULT;
aa1c7ee7
JS		 4061 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
4062 !lpfc_cmd->fcp_rsp->rspStatus3 &&
4063 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
4064 !(vport->cfg_log_verbose & LOG_FCP_UNDER))
73d91e50
JS		 4065 logit = 0;
4066 else
4067 logit = LOG_FCP | LOG_FCP_UNDER;
4068 lpfc_printf_vlog(vport, KERN_WARNING, logit,
4069 "9030 FCP cmd x%x failed <%d/%d> "
5a0d80fc
JS		 4070 "status: x%x result: x%x "
4071 "sid: x%x did: x%x oxid: x%x "
4072 "Data: x%x x%x\n",
73d91e50
JS		 4073 cmd->cmnd[0],
4074 cmd->device ? cmd->device->id : 0xffff,
4075 cmd->device ? cmd->device->lun : 0xffff,
4076 lpfc_cmd->status, lpfc_cmd->result,
5a0d80fc
JS		 4077 vport->fc_myDID, pnode->nlp_DID,
4078 phba->sli_rev == LPFC_SLI_REV4 ?
4079 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
73d91e50
JS		 4080 pIocbOut->iocb.ulpContext,
4081 lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
dea3101e
JB		 4082
4083 switch (lpfc_cmd->status) {
4084 case IOSTAT_FCP_RSP_ERROR:
4085 /* Call FCP RSP handler to determine result */
2e0fef85 4086 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
dea3101e
JB		 4087 break;
4088 case IOSTAT_NPORT_BSY:
4089 case IOSTAT_FABRIC_BSY:
0f1f53a7 4090 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0);
ea2151b4
JS		 4091 fast_path_evt = lpfc_alloc_fast_evt(phba);
4092 if (!fast_path_evt)
4093 break;
4094 fast_path_evt->un.fabric_evt.event_type =
4095 FC_REG_FABRIC_EVENT;
4096 fast_path_evt->un.fabric_evt.subcategory =
4097 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
4098 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
4099 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4100 memcpy(&fast_path_evt->un.fabric_evt.wwpn,
4101 &pnode->nlp_portname,
4102 sizeof(struct lpfc_name));
4103 memcpy(&fast_path_evt->un.fabric_evt.wwnn,
4104 &pnode->nlp_nodename,
4105 sizeof(struct lpfc_name));
4106 }
4107 fast_path_evt->vport = vport;
4108 fast_path_evt->work_evt.evt =
4109 LPFC_EVT_FASTPATH_MGMT_EVT;
4110 spin_lock_irqsave(&phba->hbalock, flags);
4111 list_add_tail(&fast_path_evt->work_evt.evt_listp,
4112 &phba->work_list);
4113 spin_unlock_irqrestore(&phba->hbalock, flags);
4114 lpfc_worker_wake_up(phba);
dea3101e 4115 break;
92d7f7b0 4116 case IOSTAT_LOCAL_REJECT:
1151e3ec 4117 case IOSTAT_REMOTE_STOP:
ab56dc2e
JS		 4118 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
4119 lpfc_cmd->result ==
4120 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
4121 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
4122 lpfc_cmd->result ==
4123 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
4124 cmd->result = ScsiResult(DID_NO_CONNECT, 0);
4125 break;
4126 }
d7c255b2 4127 if (lpfc_cmd->result == IOERR_INVALID_RPI ||
92d7f7b0 4128 lpfc_cmd->result == IOERR_NO_RESOURCES ||
b92938b4
JS		 4129 lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
4130 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
92d7f7b0 4131 cmd->result = ScsiResult(DID_REQUEUE, 0);
58da1ffb 4132 break;
e2a0a9d6 4133 }
e2a0a9d6
JS		 4134 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
4135 lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
4136 pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
4137 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
4138 /*
4139 * This is a response for a BG enabled
4140 * cmd. Parse BG error
4141 */
4142 lpfc_parse_bg_err(phba, lpfc_cmd,
4143 pIocbOut);
4144 break;
4145 } else {
4146 lpfc_printf_vlog(vport, KERN_WARNING,
4147 LOG_BG,
4148 "9031 non-zero BGSTAT "
6a9c52cf 4149 "on unprotected cmd\n");
e2a0a9d6
JS		 4150 }
4151 }
1151e3ec
JS		 4152 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
4153 && (phba->sli_rev == LPFC_SLI_REV4)
4154 && (pnode && NLP_CHK_NODE_ACT(pnode))) {
4155 /* This IO was aborted by the target, we don't
4156 * know the rxid and because we did not send the
4157 * ABTS we cannot generate and RRQ.
4158 */
4159 lpfc_set_rrq_active(phba, pnode,
ee0f4fe1
JS		 4160 lpfc_cmd->cur_iocbq.sli4_lxritag,
4161 0, 0);
1151e3ec 4162 }
e2a0a9d6 4163 /* else: fall through */
dea3101e
JB		 4164 default:
4165 cmd->result = ScsiResult(DID_ERROR, 0);
4166 break;
4167 }
4168
58da1ffb 4169 if (!pnode || !NLP_CHK_NODE_ACT(pnode)
19a7b4ae 4170 || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
0f1f53a7
JS		 4171 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED,
4172 SAM_STAT_BUSY);
ab56dc2e 4173 } else
dea3101e 4174 cmd->result = ScsiResult(DID_OK, 0);
dea3101e
JB		 4175
4176 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
4177 uint32_t *lp = (uint32_t *)cmd->sense_buffer;
4178
e8b62011
JS		 4179 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4180 "0710 Iodone <%d/%d> cmd %p, error "
4181 "x%x SNS x%x x%x Data: x%x x%x\n",
4182 cmd->device->id, cmd->device->lun, cmd,
4183 cmd->result, *lp, *(lp + 3), cmd->retries,
4184 scsi_get_resid(cmd));
dea3101e
JB		 4185 }
4186
ea2151b4 4187 lpfc_update_stats(phba, lpfc_cmd);
445cf4f4 4188 result = cmd->result;
977b5a0a
JS		 4189 if (vport->cfg_max_scsicmpl_time &&
4190 time_after(jiffies, lpfc_cmd->start_time +
4191 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
a257bf90 4192 spin_lock_irqsave(shost->host_lock, flags);
109f6ed0
JS		 4193 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4194 if (pnode->cmd_qdepth >
4195 atomic_read(&pnode->cmd_pending) &&
4196 (atomic_read(&pnode->cmd_pending) >
4197 LPFC_MIN_TGT_QDEPTH) &&
4198 ((cmd->cmnd[0] == READ_10) ||
4199 (cmd->cmnd[0] == WRITE_10)))
4200 pnode->cmd_qdepth =
4201 atomic_read(&pnode->cmd_pending);
4202
4203 pnode->last_change_time = jiffies;
4204 }
a257bf90 4205 spin_unlock_irqrestore(shost->host_lock, flags);
109f6ed0 4206 } else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
7dc517df 4207 if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) &&
977b5a0a 4208 time_after(jiffies, pnode->last_change_time +
109f6ed0 4209 msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
a257bf90 4210 spin_lock_irqsave(shost->host_lock, flags);
7dc517df
JS		 4211 depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT
4212 / 100;
4213 depth = depth ? depth : 1;
4214 pnode->cmd_qdepth += depth;
4215 if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth)
4216 pnode->cmd_qdepth = vport->cfg_tgt_queue_depth;
109f6ed0 4217 pnode->last_change_time = jiffies;
a257bf90 4218 spin_unlock_irqrestore(shost->host_lock, flags);
109f6ed0 4219 }
977b5a0a
JS		 4220 }
4221
1dcb58e5 4222 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
a257bf90
JS		 4223
4224 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
4225 queue_depth = cmd->device->queue_depth;
4226 scsi_id = cmd->device->id;
0bd4ca25
JSEC		 4227 cmd->scsi_done(cmd);
4228
b808608b 4229 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
876dd7d0 4230 spin_lock_irqsave(&phba->hbalock, flags);
92e3af66 4231 lpfc_cmd->pCmd = NULL;
876dd7d0 4232 spin_unlock_irqrestore(&phba->hbalock, flags);
92e3af66 4233
fa61a54e
JS		 4234 /*
4235 * If there is a thread waiting for command completion
4236 * wake up the thread.
4237 */
a257bf90 4238 spin_lock_irqsave(shost->host_lock, flags);
fa61a54e
JS		 4239 if (lpfc_cmd->waitq)
4240 wake_up(lpfc_cmd->waitq);
a257bf90 4241 spin_unlock_irqrestore(shost->host_lock, flags);
b808608b
JW		 4242 lpfc_release_scsi_buf(phba, lpfc_cmd);
4243 return;
4244 }
4245
92d7f7b0 4246 if (!result)
a257bf90 4247 lpfc_rampup_queue_depth(vport, queue_depth);
92d7f7b0 4248
445cf4f4
JSEC		 4249 /*
4250 * Check for queue full. If the lun is reporting queue full, then
4251 * back off the lun queue depth to prevent target overloads.
4252 */
58da1ffb
JS		 4253 if (result == SAM_STAT_TASK_SET_FULL && pnode &&
4254 NLP_CHK_NODE_ACT(pnode)) {
a257bf90
JS		 4255 shost_for_each_device(tmp_sdev, shost) {
4256 if (tmp_sdev->id != scsi_id)
445cf4f4
JSEC		 4257 continue;
4258 depth = scsi_track_queue_full(tmp_sdev,
5ffc266e
JS		 4259 tmp_sdev->queue_depth-1);
4260 if (depth <= 0)
4261 continue;
e8b62011
JS		 4262 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4263 "0711 detected queue full - lun queue "
4264 "depth adjusted to %d.\n", depth);
ea2151b4 4265 lpfc_send_sdev_queuedepth_change_event(phba, vport,
5ffc266e
JS		 4266 pnode,
4267 tmp_sdev->lun,
4268 depth+1, depth);
445cf4f4
JSEC		 4269 }
4270 }
4271
876dd7d0 4272 spin_lock_irqsave(&phba->hbalock, flags);
92e3af66 4273 lpfc_cmd->pCmd = NULL;
876dd7d0 4274 spin_unlock_irqrestore(&phba->hbalock, flags);
92e3af66 4275
fa61a54e
JS		 4276 /*
4277 * If there is a thread waiting for command completion
4278 * wake up the thread.
4279 */
a257bf90 4280 spin_lock_irqsave(shost->host_lock, flags);
fa61a54e
JS		 4281 if (lpfc_cmd->waitq)
4282 wake_up(lpfc_cmd->waitq);
a257bf90 4283 spin_unlock_irqrestore(shost->host_lock, flags);
fa61a54e 4284
0bd4ca25 4285 lpfc_release_scsi_buf(phba, lpfc_cmd);
dea3101e
JB		 4286}
4287
34b02dcd 4288/**
3621a710 4289 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
34b02dcd
JS		 4290 * @data: A pointer to the immediate command data portion of the IOCB.
4291 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
4292 *
4293 * The routine copies the entire FCP command from @fcp_cmnd to @data while
4294 * byte swapping the data to big endian format for transmission on the wire.
4295 **/
4296static void
4297lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
4298{
4299 int i, j;
4300 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
4301 i += sizeof(uint32_t), j++) {
4302 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
4303 }
4304}
4305
9bad7671 4306/**
f1126688 4307 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
9bad7671
JS		 4308 * @vport: The virtual port for which this call is being executed.
4309 * @lpfc_cmd: The scsi command which needs to send.
4310 * @pnode: Pointer to lpfc_nodelist.
4311 *
4312 * This routine initializes fcp_cmnd and iocb data structure from scsi command
3772a991 4313 * to transfer for device with SLI3 interface spec.
9bad7671 4314 **/
dea3101e 4315static void
f1126688 4316lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
2e0fef85 4317 struct lpfc_nodelist *pnode)
dea3101e 4318{
2e0fef85 4319 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 4320 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
4321 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
4322 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
4323 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
4324 int datadir = scsi_cmnd->sc_data_direction;
7e2b19fb 4325 char tag[2];
027140ea
JS		 4326 uint8_t *ptr;
4327 bool sli4;
dea3101e 4328
58da1ffb
JS		 4329 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
4330 return;
4331
dea3101e 4332 lpfc_cmd->fcp_rsp->rspSnsLen = 0;
69859dc4
JSEC		 4333 /* clear task management bits */
4334 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
dea3101e 4335
91886523
JSEC		 4336 int_to_scsilun(lpfc_cmd->pCmd->device->lun,
4337 &lpfc_cmd->fcp_cmnd->fcp_lun);
dea3101e 4338
027140ea
JS		 4339 ptr = &fcp_cmnd->fcpCdb[0];
4340 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
4341 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
4342 ptr += scsi_cmnd->cmd_len;
4343 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
4344 }
4345
7e2b19fb
JS		 4346 if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
4347 switch (tag[0]) {
dea3101e
JB		 4348 case HEAD_OF_QUEUE_TAG:
4349 fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
4350 break;
4351 case ORDERED_QUEUE_TAG:
4352 fcp_cmnd->fcpCntl1 = ORDERED_Q;
4353 break;
4354 default:
4355 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
4356 break;
4357 }
4358 } else
fe8f7f9c 4359 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
dea3101e 4360
027140ea
JS		 4361 sli4 = (phba->sli_rev == LPFC_SLI_REV4);
4362
dea3101e
JB		 4363 /*
4364 * There are three possibilities here - use scatter-gather segment, use
4365 * the single mapping, or neither. Start the lpfc command prep by
4366 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
4367 * data bde entry.
4368 */
a0b4f78f 4369 if (scsi_sg_count(scsi_cmnd)) {
dea3101e
JB		 4370 if (datadir == DMA_TO_DEVICE) {
4371 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
027140ea
JS		 4372 if (sli4)
4373 iocb_cmd->ulpPU = PARM_READ_CHECK;
4374 else {
3772a991
JS		 4375 iocb_cmd->un.fcpi.fcpi_parm = 0;
4376 iocb_cmd->ulpPU = 0;
027140ea 4377 }
dea3101e
JB		 4378 fcp_cmnd->fcpCntl3 = WRITE_DATA;
4379 phba->fc4OutputRequests++;
4380 } else {
4381 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
4382 iocb_cmd->ulpPU = PARM_READ_CHECK;
dea3101e
JB		 4383 fcp_cmnd->fcpCntl3 = READ_DATA;
4384 phba->fc4InputRequests++;
4385 }
4386 } else {
4387 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
4388 iocb_cmd->un.fcpi.fcpi_parm = 0;
4389 iocb_cmd->ulpPU = 0;
4390 fcp_cmnd->fcpCntl3 = 0;
4391 phba->fc4ControlRequests++;
4392 }
e2a0a9d6
JS		 4393 if (phba->sli_rev == 3 &&
4394 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
34b02dcd 4395 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
dea3101e
JB		 4396 /*
4397 * Finish initializing those IOCB fields that are independent
4398 * of the scsi_cmnd request_buffer
4399 */
4400 piocbq->iocb.ulpContext = pnode->nlp_rpi;
027140ea 4401 if (sli4)
6d368e53
JS		 4402 piocbq->iocb.ulpContext =
4403 phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
dea3101e
JB		 4404 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
4405 piocbq->iocb.ulpFCP2Rcvy = 1;
09372820
JS		 4406 else
4407 piocbq->iocb.ulpFCP2Rcvy = 0;
dea3101e
JB		 4408
4409 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
4410 piocbq->context1 = lpfc_cmd;
4411 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4412 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
2e0fef85 4413 piocbq->vport = vport;
dea3101e
JB		 4414}
4415
da0436e9 4416/**
6d368e53 4417 * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit
9bad7671
JS		 4418 * @vport: The virtual port for which this call is being executed.
4419 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4420 * @lun: Logical unit number.
4421 * @task_mgmt_cmd: SCSI task management command.
4422 *
3772a991
JS		 4423 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
4424 * for device with SLI-3 interface spec.
9bad7671
JS		 4425 *
4426 * Return codes:
4427 * 0 - Error
4428 * 1 - Success
4429 **/
dea3101e 4430static int
f1126688 4431lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
dea3101e 4432 struct lpfc_scsi_buf *lpfc_cmd,
420b630d 4433 unsigned int lun,
dea3101e
JB		 4434 uint8_t task_mgmt_cmd)
4435{
dea3101e
JB		 4436 struct lpfc_iocbq *piocbq;
4437 IOCB_t *piocb;
4438 struct fcp_cmnd *fcp_cmnd;
0b18ac42 4439 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
dea3101e
JB		 4440 struct lpfc_nodelist *ndlp = rdata->pnode;
4441
58da1ffb
JS		 4442 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
4443 ndlp->nlp_state != NLP_STE_MAPPED_NODE)
dea3101e 4444 return 0;
dea3101e 4445
dea3101e 4446 piocbq = &(lpfc_cmd->cur_iocbq);
2e0fef85
JS		 4447 piocbq->vport = vport;
4448
dea3101e
JB		 4449 piocb = &piocbq->iocb;
4450
4451 fcp_cmnd = lpfc_cmd->fcp_cmnd;
34b02dcd
JS		 4452 /* Clear out any old data in the FCP command area */
4453 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
4454 int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
dea3101e 4455 fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
e2a0a9d6
JS		 4456 if (vport->phba->sli_rev == 3 &&
4457 !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
34b02dcd 4458 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
dea3101e 4459 piocb->ulpCommand = CMD_FCP_ICMND64_CR;
dea3101e 4460 piocb->ulpContext = ndlp->nlp_rpi;
6d368e53
JS		 4461 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4462 piocb->ulpContext =
4463 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4464 }
dea3101e
JB		 4465 if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
4466 piocb->ulpFCP2Rcvy = 1;
4467 }
4468 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
4469
4470 /* ulpTimeout is only one byte */
4471 if (lpfc_cmd->timeout > 0xff) {
4472 /*
4473 * Do not timeout the command at the firmware level.
4474 * The driver will provide the timeout mechanism.
4475 */
4476 piocb->ulpTimeout = 0;
f1126688 4477 } else
dea3101e 4478 piocb->ulpTimeout = lpfc_cmd->timeout;
da0436e9 4479
f1126688
JS		 4480 if (vport->phba->sli_rev == LPFC_SLI_REV4)
4481 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
3772a991 4482
f1126688 4483 return 1;
3772a991
JS		 4484}
4485
4486/**
25985edc 4487 * lpfc_scsi_api_table_setup - Set up scsi api function jump table
3772a991
JS		 4488 * @phba: The hba struct for which this call is being executed.
4489 * @dev_grp: The HBA PCI-Device group number.
4490 *
4491 * This routine sets up the SCSI interface API function jump table in @phba
4492 * struct.
4493 * Returns: 0 - success, -ENODEV - failure.
4494 **/
4495int
4496lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4497{
4498
f1126688
JS		 4499 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
4500 phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
f1126688 4501
3772a991
JS		 4502 switch (dev_grp) {
4503 case LPFC_PCI_DEV_LP:
4504 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
4505 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
acd6859b 4506 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
3772a991 4507 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
19ca7609 4508 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
3772a991 4509 break;
da0436e9
JS		 4510 case LPFC_PCI_DEV_OC:
4511 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
4512 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
acd6859b 4513 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
da0436e9 4514 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
19ca7609 4515 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
da0436e9 4516 break;
3772a991
JS		 4517 default:
4518 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4519 "1418 Invalid HBA PCI-device group: 0x%x\n",
4520 dev_grp);
4521 return -ENODEV;
4522 break;
4523 }
3772a991 4524 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
84d1b006 4525 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
3772a991
JS		 4526 return 0;
4527}
4528
9bad7671 4529/**
3621a710 4530 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
9bad7671
JS		 4531 * @phba: The Hba for which this call is being executed.
4532 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
4533 * @rspiocbq: Pointer to lpfc_iocbq data structure.
4534 *
4535 * This routine is IOCB completion routine for device reset and target reset
4536 * routine. This routine release scsi buffer associated with lpfc_cmd.
4537 **/
7054a606
JS		 4538static void
4539lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
4540 struct lpfc_iocbq *cmdiocbq,
4541 struct lpfc_iocbq *rspiocbq)
4542{
4543 struct lpfc_scsi_buf *lpfc_cmd =
4544 (struct lpfc_scsi_buf *) cmdiocbq->context1;
4545 if (lpfc_cmd)
4546 lpfc_release_scsi_buf(phba, lpfc_cmd);
4547 return;
4548}
4549
9bad7671 4550/**
3621a710 4551 * lpfc_info - Info entry point of scsi_host_template data structure
9bad7671
JS		 4552 * @host: The scsi host for which this call is being executed.
4553 *
4554 * This routine provides module information about hba.
4555 *
4556 * Reutrn code:
4557 * Pointer to char - Success.
4558 **/
dea3101e
JB		 4559const char *
4560lpfc_info(struct Scsi_Host *host)
4561{
2e0fef85
JS		 4562 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
4563 struct lpfc_hba *phba = vport->phba;
8b68cd52 4564 int len, link_speed = 0;
dea3101e
JB		 4565 static char lpfcinfobuf[384];
4566
4567 memset(lpfcinfobuf,0,384);
4568 if (phba && phba->pcidev){
4569 strncpy(lpfcinfobuf, phba->ModelDesc, 256);
4570 len = strlen(lpfcinfobuf);
4571 snprintf(lpfcinfobuf + len,
4572 384-len,
4573 " on PCI bus %02x device %02x irq %d",
4574 phba->pcidev->bus->number,
4575 phba->pcidev->devfn,
4576 phba->pcidev->irq);
4577 len = strlen(lpfcinfobuf);
4578 if (phba->Port[0]) {
4579 snprintf(lpfcinfobuf + len,
4580 384-len,
4581 " port %s",
4582 phba->Port);
4583 }
65467b6b 4584 len = strlen(lpfcinfobuf);
8b68cd52
JS		 4585 if (phba->sli_rev <= LPFC_SLI_REV3) {
4586 link_speed = lpfc_sli_port_speed_get(phba);
4587 } else {
4588 if (phba->sli4_hba.link_state.logical_speed)
4589 link_speed =
4590 phba->sli4_hba.link_state.logical_speed;
4591 else
4592 link_speed = phba->sli4_hba.link_state.speed;
65467b6b 4593 }
8b68cd52
JS		 4594 if (link_speed != 0)
4595 snprintf(lpfcinfobuf + len, 384-len,
4596 " Logical Link Speed: %d Mbps", link_speed);
dea3101e
JB		 4597 }
4598 return lpfcinfobuf;
4599}
4600
9bad7671 4601/**
3621a710 4602 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
9bad7671
JS		 4603 * @phba: The Hba for which this call is being executed.
4604 *
4605 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
4606 * The default value of cfg_poll_tmo is 10 milliseconds.
4607 **/
875fbdfe
JSEC		 4608static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
4609{
4610 unsigned long poll_tmo_expires =
4611 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
4612
0e9bb8d7 4613 if (!list_empty(&phba->sli.ring[LPFC_FCP_RING].txcmplq))
875fbdfe
JSEC		 4614 mod_timer(&phba->fcp_poll_timer,
4615 poll_tmo_expires);
4616}
4617
9bad7671 4618/**
3621a710 4619 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
9bad7671
JS		 4620 * @phba: The Hba for which this call is being executed.
4621 *
4622 * This routine starts the fcp_poll_timer of @phba.
4623 **/
875fbdfe
JSEC		 4624void lpfc_poll_start_timer(struct lpfc_hba * phba)
4625{
4626 lpfc_poll_rearm_timer(phba);
4627}
4628
9bad7671 4629/**
3621a710 4630 * lpfc_poll_timeout - Restart polling timer
9bad7671
JS		 4631 * @ptr: Map to lpfc_hba data structure pointer.
4632 *
4633 * This routine restarts fcp_poll timer, when FCP ring polling is enable
4634 * and FCP Ring interrupt is disable.
4635 **/
4636
875fbdfe
JSEC		 4637void lpfc_poll_timeout(unsigned long ptr)
4638{
2e0fef85 4639 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
875fbdfe
JSEC		 4640
4641 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
45ed1190
JS		 4642 lpfc_sli_handle_fast_ring_event(phba,
4643 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4644
875fbdfe
JSEC		 4645 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4646 lpfc_poll_rearm_timer(phba);
4647 }
875fbdfe
JSEC		 4648}
4649
9bad7671 4650/**
3621a710 4651 * lpfc_queuecommand - scsi_host_template queuecommand entry point
9bad7671
JS		 4652 * @cmnd: Pointer to scsi_cmnd data structure.
4653 * @done: Pointer to done routine.
4654 *
4655 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
4656 * This routine prepares an IOCB from scsi command and provides to firmware.
4657 * The @done callback is invoked after driver finished processing the command.
4658 *
4659 * Return value :
4660 * 0 - Success
4661 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
4662 **/
dea3101e 4663static int
b9a7c631 4664lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
dea3101e 4665{
2e0fef85
JS		 4666 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4667 struct lpfc_hba *phba = vport->phba;
dea3101e 4668 struct lpfc_rport_data *rdata = cmnd->device->hostdata;
1c6f4ef5 4669 struct lpfc_nodelist *ndlp;
0bd4ca25 4670 struct lpfc_scsi_buf *lpfc_cmd;
19a7b4ae 4671 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
19a7b4ae 4672 int err;
dea3101e 4673
19a7b4ae
JSEC		 4674 err = fc_remote_port_chkready(rport);
4675 if (err) {
4676 cmnd->result = err;
dea3101e
JB		 4677 goto out_fail_command;
4678 }
1c6f4ef5 4679 ndlp = rdata->pnode;
dea3101e 4680
bf08611b 4681 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
acd6859b 4682 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
e2a0a9d6 4683
6a9c52cf
JS		 4684 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
4685 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
4686 " op:%02x str=%s without registering for"
4687 " BlockGuard - Rejecting command\n",
e2a0a9d6
JS		 4688 cmnd->cmnd[0], scsi_get_prot_op(cmnd),
4689 dif_op_str[scsi_get_prot_op(cmnd)]);
4690 goto out_fail_command;
4691 }
4692
dea3101e 4693 /*
19a7b4ae
JSEC		 4694 * Catch race where our node has transitioned, but the
4695 * transport is still transitioning.
dea3101e 4696 */
6b415f5d
JS		 4697 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
4698 goto out_tgt_busy;
7dc517df 4699 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
3496343d 4700 goto out_tgt_busy;
a93ce024 4701
19ca7609 4702 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
dea3101e 4703 if (lpfc_cmd == NULL) {
eaf15d5b 4704 lpfc_rampdown_queue_depth(phba);
92d7f7b0 4705
e8b62011
JS		 4706 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4707 "0707 driver's buffer pool is empty, "
4708 "IO busied\n");
dea3101e
JB		 4709 goto out_host_busy;
4710 }
4711
4712 /*
4713 * Store the midlayer's command structure for the completion phase
4714 * and complete the command initialization.
4715 */
4716 lpfc_cmd->pCmd = cmnd;
4717 lpfc_cmd->rdata = rdata;
4718 lpfc_cmd->timeout = 0;
977b5a0a 4719 lpfc_cmd->start_time = jiffies;
dea3101e 4720 cmnd->host_scribble = (unsigned char *)lpfc_cmd;
dea3101e 4721
e2a0a9d6 4722 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
6a9c52cf 4723 if (vport->phba->cfg_enable_bg) {
737d4248
JS		 4724 lpfc_printf_vlog(vport,
4725 KERN_INFO, LOG_SCSI_CMD,
2613470a
JS		 4726 "9033 BLKGRD: rcvd %s cmd:x%x "
4727 "sector x%llx cnt %u pt %x\n",
4728 dif_op_str[scsi_get_prot_op(cmnd)],
4729 cmnd->cmnd[0],
4730 (unsigned long long)scsi_get_lba(cmnd),
4731 blk_rq_sectors(cmnd->request),
4732 (cmnd->cmnd[1]>>5));
6a9c52cf 4733 }
e2a0a9d6
JS		 4734 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
4735 } else {
6a9c52cf 4736 if (vport->phba->cfg_enable_bg) {
737d4248
JS		 4737 lpfc_printf_vlog(vport,
4738 KERN_INFO, LOG_SCSI_CMD,
2613470a
JS		 4739 "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
4740 "x%x sector x%llx cnt %u pt %x\n",
4741 cmnd->cmnd[0],
4742 (unsigned long long)scsi_get_lba(cmnd),
9a6b09c0 4743 blk_rq_sectors(cmnd->request),
2613470a 4744 (cmnd->cmnd[1]>>5));
6a9c52cf 4745 }
e2a0a9d6
JS		 4746 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
4747 }
4748
dea3101e
JB		 4749 if (err)
4750 goto out_host_busy_free_buf;
4751
2e0fef85 4752 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
dea3101e 4753
977b5a0a 4754 atomic_inc(&ndlp->cmd_pending);
3772a991 4755 err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
92d7f7b0 4756 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
eaf15d5b
JS		 4757 if (err) {
4758 atomic_dec(&ndlp->cmd_pending);
dea3101e 4759 goto out_host_busy_free_buf;
eaf15d5b 4760 }
875fbdfe 4761 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
45ed1190
JS		 4762 lpfc_sli_handle_fast_ring_event(phba,
4763 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4764
875fbdfe
JSEC		 4765 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4766 lpfc_poll_rearm_timer(phba);
4767 }
4768
dea3101e
JB		 4769 return 0;
4770
4771 out_host_busy_free_buf:
bcf4dbfa 4772 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
0bd4ca25 4773 lpfc_release_scsi_buf(phba, lpfc_cmd);
dea3101e
JB		 4774 out_host_busy:
4775 return SCSI_MLQUEUE_HOST_BUSY;
4776
3496343d
MC		 4777 out_tgt_busy:
4778 return SCSI_MLQUEUE_TARGET_BUSY;
4779
dea3101e 4780 out_fail_command:
b9a7c631 4781 cmnd->scsi_done(cmnd);
dea3101e
JB		 4782 return 0;
4783}
4784
f281233d 4785
9bad7671 4786/**
3621a710 4787 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
9bad7671
JS		 4788 * @cmnd: Pointer to scsi_cmnd data structure.
4789 *
4790 * This routine aborts @cmnd pending in base driver.
4791 *
4792 * Return code :
4793 * 0x2003 - Error
4794 * 0x2002 - Success
4795 **/
dea3101e 4796static int
63c59c3b 4797lpfc_abort_handler(struct scsi_cmnd *cmnd)
dea3101e 4798{
2e0fef85
JS		 4799 struct Scsi_Host *shost = cmnd->device->host;
4800 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4801 struct lpfc_hba *phba = vport->phba;
0bd4ca25
JSEC		 4802 struct lpfc_iocbq *iocb;
4803 struct lpfc_iocbq *abtsiocb;
dea3101e 4804 struct lpfc_scsi_buf *lpfc_cmd;
dea3101e 4805 IOCB_t *cmd, *icmd;
3a70730a 4806 int ret = SUCCESS, status = 0;
876dd7d0 4807 unsigned long flags;
fa61a54e 4808 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
dea3101e 4809
3a70730a 4810 status = fc_block_scsi_eh(cmnd);
908e18e4 4811 if (status != 0 && status != SUCCESS)
3a70730a 4812 return status;
4f2e66c6 4813
876dd7d0 4814 spin_lock_irqsave(&phba->hbalock, flags);
4f2e66c6
JS		 4815 /* driver queued commands are in process of being flushed */
4816 if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) {
876dd7d0 4817 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6
JS		 4818 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4819 "3168 SCSI Layer abort requested I/O has been "
4820 "flushed by LLD.\n");
4821 return FAILED;
4822 }
4823
0bd4ca25 4824 lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
92e3af66 4825 if (!lpfc_cmd || !lpfc_cmd->pCmd) {
876dd7d0 4826 spin_unlock_irqrestore(&phba->hbalock, flags);
eee8877e
JS		 4827 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4828 "2873 SCSI Layer I/O Abort Request IO CMPL Status "
5cd049a5 4829 "x%x ID %d LUN %d\n",
3a70730a 4830 SUCCESS, cmnd->device->id, cmnd->device->lun);
eee8877e
JS		 4831 return SUCCESS;
4832 }
dea3101e 4833
4f2e66c6
JS		 4834 iocb = &lpfc_cmd->cur_iocbq;
4835 /* the command is in process of being cancelled */
4836 if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
876dd7d0 4837 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6
JS		 4838 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4839 "3169 SCSI Layer abort requested I/O has been "
4840 "cancelled by LLD.\n");
4841 return FAILED;
4842 }
0bd4ca25
JSEC		 4843 /*
4844 * If pCmd field of the corresponding lpfc_scsi_buf structure
4845 * points to a different SCSI command, then the driver has
4846 * already completed this command, but the midlayer did not
4f2e66c6 4847 * see the completion before the eh fired. Just return SUCCESS.
0bd4ca25 4848 */
4f2e66c6
JS		 4849 if (lpfc_cmd->pCmd != cmnd) {
4850 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4851 "3170 SCSI Layer abort requested I/O has been "
4852 "completed by LLD.\n");
4853 goto out_unlock;
4854 }
dea3101e 4855
0bd4ca25 4856 BUG_ON(iocb->context1 != lpfc_cmd);
dea3101e 4857
4f2e66c6 4858 abtsiocb = __lpfc_sli_get_iocbq(phba);
0bd4ca25
JSEC		 4859 if (abtsiocb == NULL) {
4860 ret = FAILED;
4f2e66c6 4861 goto out_unlock;
dea3101e
JB		 4862 }
4863
dea3101e 4864 /*
0bd4ca25
JSEC		 4865 * The scsi command can not be in txq and it is in flight because the
4866 * pCmd is still pointig at the SCSI command we have to abort. There
4867 * is no need to search the txcmplq. Just send an abort to the FW.
dea3101e 4868 */
dea3101e 4869
0bd4ca25
JSEC		 4870 cmd = &iocb->iocb;
4871 icmd = &abtsiocb->iocb;
4872 icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
4873 icmd->un.acxri.abortContextTag = cmd->ulpContext;
3772a991
JS		 4874 if (phba->sli_rev == LPFC_SLI_REV4)
4875 icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
4876 else
4877 icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
dea3101e 4878
0bd4ca25
JSEC		 4879 icmd->ulpLe = 1;
4880 icmd->ulpClass = cmd->ulpClass;
5ffc266e
JS		 4881
4882 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
4883 abtsiocb->fcp_wqidx = iocb->fcp_wqidx;
341af102 4884 abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
5ffc266e 4885
2e0fef85 4886 if (lpfc_is_link_up(phba))
0bd4ca25
JSEC		 4887 icmd->ulpCommand = CMD_ABORT_XRI_CN;
4888 else
4889 icmd->ulpCommand = CMD_CLOSE_XRI_CN;
dea3101e 4890
0bd4ca25 4891 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2e0fef85 4892 abtsiocb->vport = vport;
4f2e66c6 4893 /* no longer need the lock after this point */
876dd7d0 4894 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6 4895
3772a991
JS		 4896 if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) ==
4897 IOCB_ERROR) {
0bd4ca25
JSEC		 4898 lpfc_sli_release_iocbq(phba, abtsiocb);
4899 ret = FAILED;
4900 goto out;
4901 }
dea3101e 4902
875fbdfe 4903 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
45ed1190
JS		 4904 lpfc_sli_handle_fast_ring_event(phba,
4905 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
875fbdfe 4906
fa61a54e 4907 lpfc_cmd->waitq = &waitq;
0bd4ca25 4908 /* Wait for abort to complete */
fa61a54e
JS		 4909 wait_event_timeout(waitq,
4910 (lpfc_cmd->pCmd != cmnd),
256ec0d0 4911 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
fa61a54e 4912 lpfc_cmd->waitq = NULL;
dea3101e 4913
0bd4ca25
JSEC		 4914 if (lpfc_cmd->pCmd == cmnd) {
4915 ret = FAILED;
e8b62011
JS		 4916 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
4917 "0748 abort handler timed out waiting "
247ca945
JS		 4918 "for abortng I/O (xri:x%x) to complete: "
4919 "ret %#x, ID %d, LUN %d\n",
4920 iocb->sli4_xritag, ret,
4921 cmnd->device->id, cmnd->device->lun);
dea3101e 4922 }
4f2e66c6 4923 goto out;
dea3101e 4924
4f2e66c6 4925out_unlock:
876dd7d0 4926 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6 4927out:
e8b62011
JS		 4928 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4929 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
5cd049a5
CH		 4930 "LUN %d\n", ret, cmnd->device->id,
4931 cmnd->device->lun);
63c59c3b 4932 return ret;
8fa728a2
JG		 4933}
4934
bbb9d180
JS		 4935static char *
4936lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
4937{
4938 switch (task_mgmt_cmd) {
4939 case FCP_ABORT_TASK_SET:
4940 return "ABORT_TASK_SET";
4941 case FCP_CLEAR_TASK_SET:
4942 return "FCP_CLEAR_TASK_SET";
4943 case FCP_BUS_RESET:
4944 return "FCP_BUS_RESET";
4945 case FCP_LUN_RESET:
4946 return "FCP_LUN_RESET";
4947 case FCP_TARGET_RESET:
4948 return "FCP_TARGET_RESET";
4949 case FCP_CLEAR_ACA:
4950 return "FCP_CLEAR_ACA";
4951 case FCP_TERMINATE_TASK:
4952 return "FCP_TERMINATE_TASK";
4953 default:
4954 return "unknown";
4955 }
4956}
4957
9bad7671 4958/**
bbb9d180
JS		 4959 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
4960 * @vport: The virtual port for which this call is being executed.
4961 * @rdata: Pointer to remote port local data
4962 * @tgt_id: Target ID of remote device.
4963 * @lun_id: Lun number for the TMF
4964 * @task_mgmt_cmd: type of TMF to send
9bad7671 4965 *
bbb9d180
JS		 4966 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
4967 * a remote port.
9bad7671 4968 *
bbb9d180
JS		 4969 * Return Code:
4970 * 0x2003 - Error
4971 * 0x2002 - Success.
9bad7671 4972 **/
dea3101e 4973static int
bbb9d180
JS		 4974lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
4975 unsigned tgt_id, unsigned int lun_id,
4976 uint8_t task_mgmt_cmd)
dea3101e 4977{
2e0fef85 4978 struct lpfc_hba *phba = vport->phba;
0bd4ca25 4979 struct lpfc_scsi_buf *lpfc_cmd;
bbb9d180
JS		 4980 struct lpfc_iocbq *iocbq;
4981 struct lpfc_iocbq *iocbqrsp;
5989b8d4 4982 struct lpfc_nodelist *pnode = rdata->pnode;
bbb9d180 4983 int ret;
915caaaf 4984 int status;
dea3101e 4985
5989b8d4 4986 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
915caaaf 4987 return FAILED;
bbb9d180 4988
19ca7609 4989 lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode);
dea3101e 4990 if (lpfc_cmd == NULL)
915caaaf 4991 return FAILED;
dea3101e 4992 lpfc_cmd->timeout = 60;
0b18ac42 4993 lpfc_cmd->rdata = rdata;
dea3101e 4994
bbb9d180
JS		 4995 status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
4996 task_mgmt_cmd);
915caaaf
JS		 4997 if (!status) {
4998 lpfc_release_scsi_buf(phba, lpfc_cmd);
4999 return FAILED;
5000 }
dea3101e 5001
bbb9d180 5002 iocbq = &lpfc_cmd->cur_iocbq;
0bd4ca25 5003 iocbqrsp = lpfc_sli_get_iocbq(phba);
915caaaf
JS		 5004 if (iocbqrsp == NULL) {
5005 lpfc_release_scsi_buf(phba, lpfc_cmd);
5006 return FAILED;
5007 }
bbb9d180 5008
e8b62011 5009 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
bbb9d180 5010 "0702 Issue %s to TGT %d LUN %d "
6d368e53 5011 "rpi x%x nlp_flag x%x Data: x%x x%x\n",
bbb9d180 5012 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
6d368e53
JS		 5013 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
5014 iocbq->iocb_flag);
bbb9d180 5015
3772a991 5016 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
915caaaf 5017 iocbq, iocbqrsp, lpfc_cmd->timeout);
bbb9d180
JS		 5018 if (status != IOCB_SUCCESS) {
5019 if (status == IOCB_TIMEDOUT) {
5020 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
5021 ret = TIMEOUT_ERROR;
5022 } else
915caaaf 5023 ret = FAILED;
bbb9d180
JS		 5024 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
5025 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
6d368e53
JS		 5026 "0727 TMF %s to TGT %d LUN %d failed (%d, %d) "
5027 "iocb_flag x%x\n",
bbb9d180
JS		 5028 lpfc_taskmgmt_name(task_mgmt_cmd),
5029 tgt_id, lun_id, iocbqrsp->iocb.ulpStatus,
6d368e53
JS		 5030 iocbqrsp->iocb.un.ulpWord[4],
5031 iocbq->iocb_flag);
2a9bf3d0
JS		 5032 } else if (status == IOCB_BUSY)
5033 ret = FAILED;
5034 else
bbb9d180
JS		 5035 ret = SUCCESS;
5036
6175c02a 5037 lpfc_sli_release_iocbq(phba, iocbqrsp);
bbb9d180
JS		 5038
5039 if (ret != TIMEOUT_ERROR)
5040 lpfc_release_scsi_buf(phba, lpfc_cmd);
5041
5042 return ret;
5043}
5044
5045/**
5046 * lpfc_chk_tgt_mapped -
5047 * @vport: The virtual port to check on
5048 * @cmnd: Pointer to scsi_cmnd data structure.
5049 *
5050 * This routine delays until the scsi target (aka rport) for the
5051 * command exists (is present and logged in) or we declare it non-existent.
5052 *
5053 * Return code :
5054 * 0x2003 - Error
5055 * 0x2002 - Success
5056 **/
5057static int
5058lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
5059{
5060 struct lpfc_rport_data *rdata = cmnd->device->hostdata;
1c6f4ef5 5061 struct lpfc_nodelist *pnode;
bbb9d180
JS		 5062 unsigned long later;
5063
1c6f4ef5
JS		 5064 if (!rdata) {
5065 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5066 "0797 Tgt Map rport failure: rdata x%p\n", rdata);
5067 return FAILED;
5068 }
5069 pnode = rdata->pnode;
bbb9d180
JS		 5070 /*
5071 * If target is not in a MAPPED state, delay until
5072 * target is rediscovered or devloss timeout expires.
5073 */
5074 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5075 while (time_after(later, jiffies)) {
5076 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
5077 return FAILED;
5078 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
5079 return SUCCESS;
5080 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
5081 rdata = cmnd->device->hostdata;
5082 if (!rdata)
5083 return FAILED;
5084 pnode = rdata->pnode;
5085 }
5086 if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
5087 (pnode->nlp_state != NLP_STE_MAPPED_NODE))
5088 return FAILED;
5089 return SUCCESS;
5090}
5091
5092/**
5093 * lpfc_reset_flush_io_context -
5094 * @vport: The virtual port (scsi_host) for the flush context
5095 * @tgt_id: If aborting by Target contect - specifies the target id
5096 * @lun_id: If aborting by Lun context - specifies the lun id
5097 * @context: specifies the context level to flush at.
5098 *
5099 * After a reset condition via TMF, we need to flush orphaned i/o
5100 * contexts from the adapter. This routine aborts any contexts
5101 * outstanding, then waits for their completions. The wait is
5102 * bounded by devloss_tmo though.
5103 *
5104 * Return code :
5105 * 0x2003 - Error
5106 * 0x2002 - Success
5107 **/
5108static int
5109lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
5110 uint64_t lun_id, lpfc_ctx_cmd context)
5111{
5112 struct lpfc_hba *phba = vport->phba;
5113 unsigned long later;
5114 int cnt;
5115
5116 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
6175c02a 5117 if (cnt)
51ef4c26 5118 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
bbb9d180 5119 tgt_id, lun_id, context);
915caaaf
JS		 5120 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5121 while (time_after(later, jiffies) && cnt) {
5122 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
bbb9d180 5123 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
dea3101e 5124 }
dea3101e 5125 if (cnt) {
e8b62011 5126 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
bbb9d180
JS		 5127 "0724 I/O flush failure for context %s : cnt x%x\n",
5128 ((context == LPFC_CTX_LUN) ? "LUN" :
5129 ((context == LPFC_CTX_TGT) ? "TGT" :
5130 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
5131 cnt);
5132 return FAILED;
dea3101e 5133 }
bbb9d180
JS		 5134 return SUCCESS;
5135}
5136
5137/**
5138 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
5139 * @cmnd: Pointer to scsi_cmnd data structure.
5140 *
5141 * This routine does a device reset by sending a LUN_RESET task management
5142 * command.
5143 *
5144 * Return code :
5145 * 0x2003 - Error
5146 * 0x2002 - Success
5147 **/
5148static int
5149lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
5150{
5151 struct Scsi_Host *shost = cmnd->device->host;
5152 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5153 struct lpfc_rport_data *rdata = cmnd->device->hostdata;
1c6f4ef5 5154 struct lpfc_nodelist *pnode;
bbb9d180
JS		 5155 unsigned tgt_id = cmnd->device->id;
5156 unsigned int lun_id = cmnd->device->lun;
5157 struct lpfc_scsi_event_header scsi_event;
3a70730a 5158 int status, ret = SUCCESS;
bbb9d180 5159
1c6f4ef5
JS		 5160 if (!rdata) {
5161 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5162 "0798 Device Reset rport failure: rdata x%p\n", rdata);
5163 return FAILED;
5164 }
5165 pnode = rdata->pnode;
589a52d6 5166 status = fc_block_scsi_eh(cmnd);
908e18e4 5167 if (status != 0 && status != SUCCESS)
589a52d6 5168 return status;
bbb9d180
JS		 5169
5170 status = lpfc_chk_tgt_mapped(vport, cmnd);
5171 if (status == FAILED) {
5172 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5173 "0721 Device Reset rport failure: rdata x%p\n", rdata);
5174 return FAILED;
5175 }
5176
5177 scsi_event.event_type = FC_REG_SCSI_EVENT;
5178 scsi_event.subcategory = LPFC_EVENT_LUNRESET;
5179 scsi_event.lun = lun_id;
5180 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5181 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5182
5183 fc_host_post_vendor_event(shost, fc_get_event_number(),
5184 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5185
5186 status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
5187 FCP_LUN_RESET);
5188
5189 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5190 "0713 SCSI layer issued Device Reset (%d, %d) "
5191 "return x%x\n", tgt_id, lun_id, status);
5192
5193 /*
5194 * We have to clean up i/o as : they may be orphaned by the TMF;
5195 * or if the TMF failed, they may be in an indeterminate state.
5196 * So, continue on.
5197 * We will report success if all the i/o aborts successfully.
5198 */
3a70730a 5199 ret = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
bbb9d180 5200 LPFC_CTX_LUN);
3a70730a 5201 return ret;
bbb9d180
JS		 5202}
5203
5204/**
5205 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
5206 * @cmnd: Pointer to scsi_cmnd data structure.
5207 *
5208 * This routine does a target reset by sending a TARGET_RESET task management
5209 * command.
5210 *
5211 * Return code :
5212 * 0x2003 - Error
5213 * 0x2002 - Success
5214 **/
5215static int
5216lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
5217{
5218 struct Scsi_Host *shost = cmnd->device->host;
5219 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5220 struct lpfc_rport_data *rdata = cmnd->device->hostdata;
1c6f4ef5 5221 struct lpfc_nodelist *pnode;
bbb9d180
JS		 5222 unsigned tgt_id = cmnd->device->id;
5223 unsigned int lun_id = cmnd->device->lun;
5224 struct lpfc_scsi_event_header scsi_event;
3a70730a 5225 int status, ret = SUCCESS;
bbb9d180 5226
1c6f4ef5
JS		 5227 if (!rdata) {
5228 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5229 "0799 Target Reset rport failure: rdata x%p\n", rdata);
5230 return FAILED;
5231 }
5232 pnode = rdata->pnode;
589a52d6 5233 status = fc_block_scsi_eh(cmnd);
908e18e4 5234 if (status != 0 && status != SUCCESS)
589a52d6 5235 return status;
bbb9d180
JS		 5236
5237 status = lpfc_chk_tgt_mapped(vport, cmnd);
5238 if (status == FAILED) {
5239 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5240 "0722 Target Reset rport failure: rdata x%p\n", rdata);
5241 return FAILED;
5242 }
5243
5244 scsi_event.event_type = FC_REG_SCSI_EVENT;
5245 scsi_event.subcategory = LPFC_EVENT_TGTRESET;
5246 scsi_event.lun = 0;
5247 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5248 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5249
5250 fc_host_post_vendor_event(shost, fc_get_event_number(),
5251 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5252
5253 status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
5254 FCP_TARGET_RESET);
5255
5256 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5257 "0723 SCSI layer issued Target Reset (%d, %d) "
5258 "return x%x\n", tgt_id, lun_id, status);
5259
5260 /*
5261 * We have to clean up i/o as : they may be orphaned by the TMF;
5262 * or if the TMF failed, they may be in an indeterminate state.
5263 * So, continue on.
5264 * We will report success if all the i/o aborts successfully.
5265 */
3a70730a
JS		 5266 ret = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
5267 LPFC_CTX_TGT);
5268 return ret;
dea3101e
JB		 5269}
5270
9bad7671 5271/**
3621a710 5272 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
9bad7671
JS		 5273 * @cmnd: Pointer to scsi_cmnd data structure.
5274 *
bbb9d180
JS		 5275 * This routine does target reset to all targets on @cmnd->device->host.
5276 * This emulates Parallel SCSI Bus Reset Semantics.
9bad7671 5277 *
bbb9d180
JS		 5278 * Return code :
5279 * 0x2003 - Error
5280 * 0x2002 - Success
9bad7671 5281 **/
94d0e7b8 5282static int
7054a606 5283lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
dea3101e 5284{
2e0fef85
JS		 5285 struct Scsi_Host *shost = cmnd->device->host;
5286 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
dea3101e 5287 struct lpfc_nodelist *ndlp = NULL;
ea2151b4 5288 struct lpfc_scsi_event_header scsi_event;
bbb9d180
JS		 5289 int match;
5290 int ret = SUCCESS, status, i;
ea2151b4
JS		 5291
5292 scsi_event.event_type = FC_REG_SCSI_EVENT;
5293 scsi_event.subcategory = LPFC_EVENT_BUSRESET;
5294 scsi_event.lun = 0;
5295 memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
5296 memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
5297
bbb9d180
JS		 5298 fc_host_post_vendor_event(shost, fc_get_event_number(),
5299 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
dea3101e 5300
bf08611b 5301 status = fc_block_scsi_eh(cmnd);
908e18e4 5302 if (status != 0 && status != SUCCESS)
bf08611b 5303 return status;
bbb9d180 5304
dea3101e
JB		 5305 /*
5306 * Since the driver manages a single bus device, reset all
5307 * targets known to the driver. Should any target reset
5308 * fail, this routine returns failure to the midlayer.
5309 */
e17da18e 5310 for (i = 0; i < LPFC_MAX_TARGET; i++) {
685f0bf7 5311 /* Search for mapped node by target ID */
dea3101e 5312 match = 0;
2e0fef85
JS		 5313 spin_lock_irq(shost->host_lock);
5314 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
e47c9093
JS		 5315 if (!NLP_CHK_NODE_ACT(ndlp))
5316 continue;
a6571c6e
JS		 5317 if (vport->phba->cfg_fcp2_no_tgt_reset &&
5318 (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
5319 continue;
685f0bf7 5320 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
915caaaf 5321 ndlp->nlp_sid == i &&
685f0bf7 5322 ndlp->rport) {
dea3101e
JB		 5323 match = 1;
5324 break;
5325 }
5326 }
2e0fef85 5327 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 5328 if (!match)
5329 continue;
bbb9d180
JS		 5330
5331 status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data,
5332 i, 0, FCP_TARGET_RESET);
5333
5334 if (status != SUCCESS) {
e8b62011
JS		 5335 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5336 "0700 Bus Reset on target %d failed\n",
5337 i);
915caaaf 5338 ret = FAILED;
dea3101e
JB		 5339 }
5340 }
6175c02a 5341 /*
bbb9d180
JS		 5342 * We have to clean up i/o as : they may be orphaned by the TMFs
5343 * above; or if any of the TMFs failed, they may be in an
5344 * indeterminate state.
5345 * We will report success if all the i/o aborts successfully.
6175c02a 5346 */
bbb9d180
JS		 5347
5348 status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
5349 if (status != SUCCESS)
0bd4ca25 5350 ret = FAILED;
bbb9d180 5351
e8b62011
JS		 5352 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5353 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
dea3101e
JB		 5354 return ret;
5355}
5356
27b01b82
JS		 5357/**
5358 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
5359 * @cmnd: Pointer to scsi_cmnd data structure.
5360 *
5361 * This routine does host reset to the adaptor port. It brings the HBA
5362 * offline, performs a board restart, and then brings the board back online.
5363 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local
5364 * reject all outstanding SCSI commands to the host and error returned
5365 * back to SCSI mid-level. As this will be SCSI mid-level's last resort
5366 * of error handling, it will only return error if resetting of the adapter
5367 * is not successful; in all other cases, will return success.
5368 *
5369 * Return code :
5370 * 0x2003 - Error
5371 * 0x2002 - Success
5372 **/
5373static int
5374lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
5375{
5376 struct Scsi_Host *shost = cmnd->device->host;
5377 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5378 struct lpfc_hba *phba = vport->phba;
5379 int rc, ret = SUCCESS;
5380
a88dbb6a
JS		 5381 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5382 "3172 SCSI layer issued Host Reset Data:\n");
5383
618a5230 5384 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
27b01b82
JS		 5385 lpfc_offline(phba);
5386 rc = lpfc_sli_brdrestart(phba);
5387 if (rc)
5388 ret = FAILED;
a88dbb6a
JS		 5389 rc = lpfc_online(phba);
5390 if (rc)
5391 ret = FAILED;
27b01b82
JS		 5392 lpfc_unblock_mgmt_io(phba);
5393
a88dbb6a
JS		 5394 if (ret == FAILED) {
5395 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5396 "3323 Failed host reset, bring it offline\n");
5397 lpfc_sli4_offline_eratt(phba);
5398 }
27b01b82
JS		 5399 return ret;
5400}
5401
9bad7671 5402/**
3621a710 5403 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
9bad7671
JS		 5404 * @sdev: Pointer to scsi_device.
5405 *
5406 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
5407 * globally available list of scsi buffers. This routine also makes sure scsi
5408 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
5409 * of scsi buffer exists for the lifetime of the driver.
5410 *
5411 * Return codes:
5412 * non-0 - Error
5413 * 0 - Success
5414 **/
dea3101e
JB		 5415static int
5416lpfc_slave_alloc(struct scsi_device *sdev)
5417{
2e0fef85
JS		 5418 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5419 struct lpfc_hba *phba = vport->phba;
19a7b4ae 5420 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
3772a991 5421 uint32_t total = 0;
dea3101e 5422 uint32_t num_to_alloc = 0;
3772a991 5423 int num_allocated = 0;
d7c47992 5424 uint32_t sdev_cnt;
dea3101e 5425
19a7b4ae 5426 if (!rport || fc_remote_port_chkready(rport))
dea3101e
JB		 5427 return -ENXIO;
5428
19a7b4ae 5429 sdev->hostdata = rport->dd_data;
d7c47992 5430 sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
dea3101e
JB		 5431
5432 /*
5433 * Populate the cmds_per_lun count scsi_bufs into this host's globally
5434 * available list of scsi buffers. Don't allocate more than the
a784efbf
JSEC		 5435 * HBA limit conveyed to the midlayer via the host structure. The
5436 * formula accounts for the lun_queue_depth + error handlers + 1
5437 * extra. This list of scsi bufs exists for the lifetime of the driver.
dea3101e
JB		 5438 */
5439 total = phba->total_scsi_bufs;
3de2a653 5440 num_to_alloc = vport->cfg_lun_queue_depth + 2;
92d7f7b0 5441
d7c47992
JS		 5442 /* If allocated buffers are enough do nothing */
5443 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
5444 return 0;
5445
92d7f7b0
JS		 5446 /* Allow some exchanges to be available always to complete discovery */
5447 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
e8b62011
JS		 5448 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5449 "0704 At limitation of %d preallocated "
5450 "command buffers\n", total);
dea3101e 5451 return 0;
92d7f7b0
JS		 5452 /* Allow some exchanges to be available always to complete discovery */
5453 } else if (total + num_to_alloc >
5454 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
e8b62011
JS		 5455 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5456 "0705 Allocation request of %d "
5457 "command buffers will exceed max of %d. "
5458 "Reducing allocation request to %d.\n",
5459 num_to_alloc, phba->cfg_hba_queue_depth,
5460 (phba->cfg_hba_queue_depth - total));
dea3101e
JB		 5461 num_to_alloc = phba->cfg_hba_queue_depth - total;
5462 }
3772a991
JS		 5463 num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc);
5464 if (num_to_alloc != num_allocated) {
96f7077f
JS		 5465 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5466 "0708 Allocation request of %d "
5467 "command buffers did not succeed. "
5468 "Allocated %d buffers.\n",
5469 num_to_alloc, num_allocated);
dea3101e 5470 }
1c6f4ef5
JS		 5471 if (num_allocated > 0)
5472 phba->total_scsi_bufs += num_allocated;
dea3101e
JB		 5473 return 0;
5474}
5475
9bad7671 5476/**
3621a710 5477 * lpfc_slave_configure - scsi_host_template slave_configure entry point
9bad7671
JS		 5478 * @sdev: Pointer to scsi_device.
5479 *
5480 * This routine configures following items
5481 * - Tag command queuing support for @sdev if supported.
9bad7671
JS		 5482 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
5483 *
5484 * Return codes:
5485 * 0 - Success
5486 **/
dea3101e
JB		 5487static int
5488lpfc_slave_configure(struct scsi_device *sdev)
5489{
2e0fef85
JS		 5490 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5491 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 5492
5493 if (sdev->tagged_supported)
3de2a653 5494 scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth);
dea3101e 5495 else
3de2a653 5496 scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth);
dea3101e 5497
875fbdfe 5498 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
45ed1190
JS		 5499 lpfc_sli_handle_fast_ring_event(phba,
5500 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
875fbdfe
JSEC		 5501 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
5502 lpfc_poll_rearm_timer(phba);
5503 }
5504
dea3101e
JB		 5505 return 0;
5506}
5507
9bad7671 5508/**
3621a710 5509 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
9bad7671
JS		 5510 * @sdev: Pointer to scsi_device.
5511 *
5512 * This routine sets @sdev hostatdata filed to null.
5513 **/
dea3101e
JB		 5514static void
5515lpfc_slave_destroy(struct scsi_device *sdev)
5516{
d7c47992
JS		 5517 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5518 struct lpfc_hba *phba = vport->phba;
5519 atomic_dec(&phba->sdev_cnt);
dea3101e
JB		 5520 sdev->hostdata = NULL;
5521 return;
5522}
5523
92d7f7b0 5524
dea3101e
JB		 5525struct scsi_host_template lpfc_template = {
5526 .module = THIS_MODULE,
5527 .name = LPFC_DRIVER_NAME,
5528 .info = lpfc_info,
5529 .queuecommand = lpfc_queuecommand,
5530 .eh_abort_handler = lpfc_abort_handler,
bbb9d180
JS		 5531 .eh_device_reset_handler = lpfc_device_reset_handler,
5532 .eh_target_reset_handler = lpfc_target_reset_handler,
7054a606 5533 .eh_bus_reset_handler = lpfc_bus_reset_handler,
27b01b82 5534 .eh_host_reset_handler = lpfc_host_reset_handler,
dea3101e
JB		 5535 .slave_alloc = lpfc_slave_alloc,
5536 .slave_configure = lpfc_slave_configure,
5537 .slave_destroy = lpfc_slave_destroy,
47a8617c 5538 .scan_finished = lpfc_scan_finished,
dea3101e 5539 .this_id = -1,
83108bd3 5540 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
dea3101e
JB		 5541 .cmd_per_lun = LPFC_CMD_PER_LUN,
5542 .use_clustering = ENABLE_CLUSTERING,
2e0fef85 5543 .shost_attrs = lpfc_hba_attrs,
564b2960 5544 .max_sectors = 0xFFFF,
f1c3b0fc 5545 .vendor_id = LPFC_NL_VENDOR_ID,
5ffc266e 5546 .change_queue_depth = lpfc_change_queue_depth,
fe8f7f9c 5547 .change_queue_type = lpfc_change_queue_type,
dea3101e 5548};
3de2a653
JS		 5549
5550struct scsi_host_template lpfc_vport_template = {
5551 .module = THIS_MODULE,
5552 .name = LPFC_DRIVER_NAME,
5553 .info = lpfc_info,
5554 .queuecommand = lpfc_queuecommand,
5555 .eh_abort_handler = lpfc_abort_handler,
bbb9d180
JS		 5556 .eh_device_reset_handler = lpfc_device_reset_handler,
5557 .eh_target_reset_handler = lpfc_target_reset_handler,
3de2a653
JS		 5558 .eh_bus_reset_handler = lpfc_bus_reset_handler,
5559 .slave_alloc = lpfc_slave_alloc,
5560 .slave_configure = lpfc_slave_configure,
5561 .slave_destroy = lpfc_slave_destroy,
5562 .scan_finished = lpfc_scan_finished,
5563 .this_id = -1,
83108bd3 5564 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
3de2a653
JS		 5565 .cmd_per_lun = LPFC_CMD_PER_LUN,
5566 .use_clustering = ENABLE_CLUSTERING,
5567 .shost_attrs = lpfc_vport_attrs,
5568 .max_sectors = 0xFFFF,
5ffc266e 5569 .change_queue_depth = lpfc_change_queue_depth,
fe8f7f9c 5570 .change_queue_type = lpfc_change_queue_type,
3de2a653 5571};
kernel source for telekom puls (alcatel/mediatek)