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qla2xxx: Restrict max_lun to 16-bit for older HBAs
[thirdparty/kernel/stable.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. *
16a59fb3 4 * Copyright (C) 2004-2014 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
1ba981fd
JS		 71static struct lpfc_rport_data *
72lpfc_rport_data_from_scsi_device(struct scsi_device *sdev)
73{
74 struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata;
75
f38fa0bb 76 if (vport->phba->cfg_fof)
1ba981fd
JS		 77 return ((struct lpfc_device_data *)sdev->hostdata)->rport_data;
78 else
79 return (struct lpfc_rport_data *)sdev->hostdata;
80}
81
da0436e9
JS		 82static void
83lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
1c6f4ef5
JS		 84static void
85lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb);
9c6aa9d7
JS		 86static int
87lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc);
e2a0a9d6
JS		 88
89static void
6a9c52cf 90lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
e2a0a9d6
JS		 91{
92 void *src, *dst;
93 struct scatterlist *sgde = scsi_sglist(cmnd);
94
95 if (!_dump_buf_data) {
6a9c52cf
JS		 96 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
97 "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
e2a0a9d6
JS		 98 __func__);
99 return;
100 }
101
102
103 if (!sgde) {
6a9c52cf
JS		 104 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
105 "9051 BLKGRD: ERROR: data scatterlist is null\n");
e2a0a9d6
JS		 106 return;
107 }
108
109 dst = (void *) _dump_buf_data;
110 while (sgde) {
111 src = sg_virt(sgde);
112 memcpy(dst, src, sgde->length);
113 dst += sgde->length;
114 sgde = sg_next(sgde);
115 }
116}
117
118static void
6a9c52cf 119lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd)
e2a0a9d6
JS		 120{
121 void *src, *dst;
122 struct scatterlist *sgde = scsi_prot_sglist(cmnd);
123
124 if (!_dump_buf_dif) {
6a9c52cf
JS		 125 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
126 "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n",
e2a0a9d6
JS		 127 __func__);
128 return;
129 }
130
131 if (!sgde) {
6a9c52cf
JS		 132 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
133 "9053 BLKGRD: ERROR: prot scatterlist is null\n");
e2a0a9d6
JS		 134 return;
135 }
136
137 dst = _dump_buf_dif;
138 while (sgde) {
139 src = sg_virt(sgde);
140 memcpy(dst, src, sgde->length);
141 dst += sgde->length;
142 sgde = sg_next(sgde);
143 }
144}
145
9c6aa9d7
JS		 146static inline unsigned
147lpfc_cmd_blksize(struct scsi_cmnd *sc)
148{
149 return sc->device->sector_size;
150}
151
152#define LPFC_CHECK_PROTECT_GUARD 1
153#define LPFC_CHECK_PROTECT_REF 2
154static inline unsigned
155lpfc_cmd_protect(struct scsi_cmnd *sc, int flag)
156{
157 return 1;
158}
159
160static inline unsigned
161lpfc_cmd_guard_csum(struct scsi_cmnd *sc)
162{
163 if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF)
164 return 0;
165 if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP)
166 return 1;
167 return 0;
168}
169
f1126688
JS		 170/**
171 * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge.
172 * @phba: Pointer to HBA object.
173 * @lpfc_cmd: lpfc scsi command object pointer.
174 *
175 * This function is called from the lpfc_prep_task_mgmt_cmd function to
176 * set the last bit in the response sge entry.
177 **/
178static void
179lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba,
180 struct lpfc_scsi_buf *lpfc_cmd)
181{
182 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
183 if (sgl) {
184 sgl += 1;
185 sgl->word2 = le32_to_cpu(sgl->word2);
186 bf_set(lpfc_sli4_sge_last, sgl, 1);
187 sgl->word2 = cpu_to_le32(sgl->word2);
188 }
189}
190
ea2151b4 191/**
3621a710 192 * lpfc_update_stats - Update statistical data for the command completion
ea2151b4
JS		 193 * @phba: Pointer to HBA object.
194 * @lpfc_cmd: lpfc scsi command object pointer.
195 *
196 * This function is called when there is a command completion and this
197 * function updates the statistical data for the command completion.
198 **/
199static void
200lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
201{
202 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
203 struct lpfc_nodelist *pnode = rdata->pnode;
204 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
205 unsigned long flags;
206 struct Scsi_Host *shost = cmd->device->host;
207 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
208 unsigned long latency;
209 int i;
210
211 if (cmd->result)
212 return;
213
9f1e1b50
JS		 214 latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time);
215
ea2151b4
JS		 216 spin_lock_irqsave(shost->host_lock, flags);
217 if (!vport->stat_data_enabled ||
218 vport->stat_data_blocked ||
5989b8d4 219 !pnode ||
ea2151b4
JS		 220 !pnode->lat_data ||
221 (phba->bucket_type == LPFC_NO_BUCKET)) {
222 spin_unlock_irqrestore(shost->host_lock, flags);
223 return;
224 }
ea2151b4
JS		 225
226 if (phba->bucket_type == LPFC_LINEAR_BUCKET) {
227 i = (latency + phba->bucket_step - 1 - phba->bucket_base)/
228 phba->bucket_step;
9f1e1b50
JS		 229 /* check array subscript bounds */
230 if (i < 0)
231 i = 0;
232 else if (i >= LPFC_MAX_BUCKET_COUNT)
233 i = LPFC_MAX_BUCKET_COUNT - 1;
ea2151b4
JS		 234 } else {
235 for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++)
236 if (latency <= (phba->bucket_base +
237 ((1<<i)*phba->bucket_step)))
238 break;
239 }
240
241 pnode->lat_data[i].cmd_count++;
242 spin_unlock_irqrestore(shost->host_lock, flags);
243}
244
ea2151b4 245/**
3621a710 246 * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
ea2151b4
JS		 247 * @phba: Pointer to HBA context object.
248 * @vport: Pointer to vport object.
249 * @ndlp: Pointer to FC node associated with the target.
250 * @lun: Lun number of the scsi device.
251 * @old_val: Old value of the queue depth.
252 * @new_val: New value of the queue depth.
253 *
254 * This function sends an event to the mgmt application indicating
255 * there is a change in the scsi device queue depth.
256 **/
257static void
258lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba,
259 struct lpfc_vport *vport,
260 struct lpfc_nodelist *ndlp,
261 uint32_t lun,
262 uint32_t old_val,
263 uint32_t new_val)
264{
265 struct lpfc_fast_path_event *fast_path_evt;
266 unsigned long flags;
267
268 fast_path_evt = lpfc_alloc_fast_evt(phba);
269 if (!fast_path_evt)
270 return;
271
272 fast_path_evt->un.queue_depth_evt.scsi_event.event_type =
273 FC_REG_SCSI_EVENT;
274 fast_path_evt->un.queue_depth_evt.scsi_event.subcategory =
275 LPFC_EVENT_VARQUEDEPTH;
276
277 /* Report all luns with change in queue depth */
278 fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun;
279 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
280 memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn,
281 &ndlp->nlp_portname, sizeof(struct lpfc_name));
282 memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn,
283 &ndlp->nlp_nodename, sizeof(struct lpfc_name));
284 }
285
286 fast_path_evt->un.queue_depth_evt.oldval = old_val;
287 fast_path_evt->un.queue_depth_evt.newval = new_val;
288 fast_path_evt->vport = vport;
289
290 fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT;
291 spin_lock_irqsave(&phba->hbalock, flags);
292 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
293 spin_unlock_irqrestore(&phba->hbalock, flags);
294 lpfc_worker_wake_up(phba);
295
296 return;
297}
298
5ffc266e
JS		 299/**
300 * lpfc_change_queue_depth - Alter scsi device queue depth
301 * @sdev: Pointer the scsi device on which to change the queue depth.
302 * @qdepth: New queue depth to set the sdev to.
303 * @reason: The reason for the queue depth change.
304 *
305 * This function is called by the midlayer and the LLD to alter the queue
306 * depth for a scsi device. This function sets the queue depth to the new
307 * value and sends an event out to log the queue depth change.
308 **/
309int
310lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
311{
312 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
313 struct lpfc_hba *phba = vport->phba;
314 struct lpfc_rport_data *rdata;
315 unsigned long new_queue_depth, old_queue_depth;
316
317 old_queue_depth = sdev->queue_depth;
6ff8556d
JS		 318
319 switch (reason) {
320 case SCSI_QDEPTH_DEFAULT:
321 /* change request from sysfs, fall through */
322 case SCSI_QDEPTH_RAMP_UP:
323 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
324 break;
325 case SCSI_QDEPTH_QFULL:
326 if (scsi_track_queue_full(sdev, qdepth) == 0)
327 return sdev->queue_depth;
328
329 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
330 "0711 detected queue full - lun queue "
331 "depth adjusted to %d.\n", sdev->queue_depth);
332 break;
333 default:
334 return -EOPNOTSUPP;
335 }
336
5ffc266e 337 new_queue_depth = sdev->queue_depth;
1ba981fd 338 rdata = lpfc_rport_data_from_scsi_device(sdev);
5ffc266e
JS		 339 if (rdata)
340 lpfc_send_sdev_queuedepth_change_event(phba, vport,
341 rdata->pnode, sdev->lun,
342 old_queue_depth,
343 new_queue_depth);
344 return sdev->queue_depth;
345}
346
fe8f7f9c
JS		 347/**
348 * lpfc_change_queue_type() - Change a device's scsi tag queuing type
349 * @sdev: Pointer the scsi device whose queue depth is to change
350 * @tag_type: Identifier for queue tag type
351 */
352static int
353lpfc_change_queue_type(struct scsi_device *sdev, int tag_type)
354{
355 if (sdev->tagged_supported) {
356 scsi_set_tag_type(sdev, tag_type);
357 if (tag_type)
358 scsi_activate_tcq(sdev, sdev->queue_depth);
359 else
360 scsi_deactivate_tcq(sdev, sdev->queue_depth);
361 } else
362 tag_type = 0;
363
364 return tag_type;
365}
366
9bad7671 367/**
3621a710 368 * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
9bad7671
JS		 369 * @phba: The Hba for which this call is being executed.
370 *
371 * This routine is called when there is resource error in driver or firmware.
372 * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine
373 * posts at most 1 event each second. This routine wakes up worker thread of
374 * @phba to process WORKER_RAM_DOWN_EVENT event.
375 *
376 * This routine should be called with no lock held.
377 **/
92d7f7b0 378void
eaf15d5b 379lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
92d7f7b0
JS		 380{
381 unsigned long flags;
5e9d9b82 382 uint32_t evt_posted;
92d7f7b0
JS		 383
384 spin_lock_irqsave(&phba->hbalock, flags);
385 atomic_inc(&phba->num_rsrc_err);
386 phba->last_rsrc_error_time = jiffies;
387
388 if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) {
389 spin_unlock_irqrestore(&phba->hbalock, flags);
390 return;
391 }
392
393 phba->last_ramp_down_time = jiffies;
394
395 spin_unlock_irqrestore(&phba->hbalock, flags);
396
397 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
5e9d9b82
JS		 398 evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE;
399 if (!evt_posted)
92d7f7b0 400 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
92d7f7b0
JS		 401 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
402
5e9d9b82
JS		 403 if (!evt_posted)
404 lpfc_worker_wake_up(phba);
92d7f7b0
JS		 405 return;
406}
407
9bad7671 408/**
3621a710 409 * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
9bad7671
JS		 410 * @phba: The Hba for which this call is being executed.
411 *
412 * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
413 * thread.This routine reduces queue depth for all scsi device on each vport
414 * associated with @phba.
415 **/
92d7f7b0
JS		 416void
417lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
418{
549e55cd
JS		 419 struct lpfc_vport **vports;
420 struct Scsi_Host *shost;
92d7f7b0 421 struct scsi_device *sdev;
5ffc266e 422 unsigned long new_queue_depth;
92d7f7b0 423 unsigned long num_rsrc_err, num_cmd_success;
549e55cd 424 int i;
92d7f7b0
JS		 425
426 num_rsrc_err = atomic_read(&phba->num_rsrc_err);
427 num_cmd_success = atomic_read(&phba->num_cmd_success);
428
75ad83a4
JS		 429 /*
430 * The error and success command counters are global per
431 * driver instance. If another handler has already
432 * operated on this error event, just exit.
433 */
434 if (num_rsrc_err == 0)
435 return;
436
549e55cd
JS		 437 vports = lpfc_create_vport_work_array(phba);
438 if (vports != NULL)
21e9a0a5 439 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
549e55cd
JS		 440 shost = lpfc_shost_from_vport(vports[i]);
441 shost_for_each_device(sdev, shost) {
92d7f7b0 442 new_queue_depth =
549e55cd
JS		 443 sdev->queue_depth * num_rsrc_err /
444 (num_rsrc_err + num_cmd_success);
445 if (!new_queue_depth)
446 new_queue_depth = sdev->queue_depth - 1;
447 else
448 new_queue_depth = sdev->queue_depth -
449 new_queue_depth;
5ffc266e
JS		 450 lpfc_change_queue_depth(sdev, new_queue_depth,
451 SCSI_QDEPTH_DEFAULT);
549e55cd 452 }
92d7f7b0 453 }
09372820 454 lpfc_destroy_vport_work_array(phba, vports);
92d7f7b0
JS		 455 atomic_set(&phba->num_rsrc_err, 0);
456 atomic_set(&phba->num_cmd_success, 0);
457}
458
a8e497d5 459/**
3621a710 460 * lpfc_scsi_dev_block - set all scsi hosts to block state
a8e497d5
JS		 461 * @phba: Pointer to HBA context object.
462 *
463 * This function walks vport list and set each SCSI host to block state
464 * by invoking fc_remote_port_delete() routine. This function is invoked
465 * with EEH when device's PCI slot has been permanently disabled.
466 **/
467void
468lpfc_scsi_dev_block(struct lpfc_hba *phba)
469{
470 struct lpfc_vport **vports;
471 struct Scsi_Host *shost;
472 struct scsi_device *sdev;
473 struct fc_rport *rport;
474 int i;
475
476 vports = lpfc_create_vport_work_array(phba);
477 if (vports != NULL)
21e9a0a5 478 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
a8e497d5
JS		 479 shost = lpfc_shost_from_vport(vports[i]);
480 shost_for_each_device(sdev, shost) {
481 rport = starget_to_rport(scsi_target(sdev));
482 fc_remote_port_delete(rport);
483 }
484 }
485 lpfc_destroy_vport_work_array(phba, vports);
486}
487
9bad7671 488/**
3772a991 489 * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec
9bad7671 490 * @vport: The virtual port for which this call being executed.
3772a991 491 * @num_to_allocate: The requested number of buffers to allocate.
9bad7671 492 *
3772a991
JS		 493 * This routine allocates a scsi buffer for device with SLI-3 interface spec,
494 * the scsi buffer contains all the necessary information needed to initiate
495 * a SCSI I/O. The non-DMAable buffer region contains information to build
496 * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP,
497 * and the initial BPL. In addition to allocating memory, the FCP CMND and
498 * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB.
9bad7671
JS		 499 *
500 * Return codes:
3772a991
JS		 501 * int - number of scsi buffers that were allocated.
502 * 0 = failure, less than num_to_alloc is a partial failure.
9bad7671 503 **/
3772a991
JS		 504static int
505lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc)
dea3101e 506{
2e0fef85 507 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 508 struct lpfc_scsi_buf *psb;
509 struct ulp_bde64 *bpl;
510 IOCB_t *iocb;
34b02dcd
JS		 511 dma_addr_t pdma_phys_fcp_cmd;
512 dma_addr_t pdma_phys_fcp_rsp;
513 dma_addr_t pdma_phys_bpl;
604a3e30 514 uint16_t iotag;
96f7077f
JS		 515 int bcnt, bpl_size;
516
517 bpl_size = phba->cfg_sg_dma_buf_size -
518 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
519
520 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
521 "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
522 num_to_alloc, phba->cfg_sg_dma_buf_size,
523 (int)sizeof(struct fcp_cmnd),
524 (int)sizeof(struct fcp_rsp), bpl_size);
dea3101e 525
3772a991
JS		 526 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
527 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
528 if (!psb)
529 break;
dea3101e 530
3772a991
JS		 531 /*
532 * Get memory from the pci pool to map the virt space to pci
533 * bus space for an I/O. The DMA buffer includes space for the
534 * struct fcp_cmnd, struct fcp_rsp and the number of bde's
535 * necessary to support the sg_tablesize.
536 */
537 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
538 GFP_KERNEL, &psb->dma_handle);
539 if (!psb->data) {
540 kfree(psb);
541 break;
542 }
543
544 /* Initialize virtual ptrs to dma_buf region. */
545 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
546
547 /* Allocate iotag for psb->cur_iocbq. */
548 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
549 if (iotag == 0) {
550 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
551 psb->data, psb->dma_handle);
552 kfree(psb);
553 break;
554 }
555 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
556
557 psb->fcp_cmnd = psb->data;
558 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
559 psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
34b02dcd 560 sizeof(struct fcp_rsp);
dea3101e 561
3772a991
JS		 562 /* Initialize local short-hand pointers. */
563 bpl = psb->fcp_bpl;
564 pdma_phys_fcp_cmd = psb->dma_handle;
565 pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd);
566 pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) +
567 sizeof(struct fcp_rsp);
568
569 /*
570 * The first two bdes are the FCP_CMD and FCP_RSP. The balance
571 * are sg list bdes. Initialize the first two and leave the
572 * rest for queuecommand.
573 */
574 bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd));
575 bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd));
576 bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd);
577 bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
578 bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w);
579
580 /* Setup the physical region for the FCP RSP */
581 bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp));
582 bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp));
583 bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp);
584 bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64;
585 bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w);
586
587 /*
588 * Since the IOCB for the FCP I/O is built into this
589 * lpfc_scsi_buf, initialize it with all known data now.
590 */
591 iocb = &psb->cur_iocbq.iocb;
592 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
593 if ((phba->sli_rev == 3) &&
594 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) {
595 /* fill in immediate fcp command BDE */
596 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED;
597 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
598 iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t,
599 unsli3.fcp_ext.icd);
600 iocb->un.fcpi64.bdl.addrHigh = 0;
601 iocb->ulpBdeCount = 0;
602 iocb->ulpLe = 0;
25985edc 603 /* fill in response BDE */
3772a991
JS		 604 iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags =
605 BUFF_TYPE_BDE_64;
606 iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize =
607 sizeof(struct fcp_rsp);
608 iocb->unsli3.fcp_ext.rbde.addrLow =
609 putPaddrLow(pdma_phys_fcp_rsp);
610 iocb->unsli3.fcp_ext.rbde.addrHigh =
611 putPaddrHigh(pdma_phys_fcp_rsp);
612 } else {
613 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
614 iocb->un.fcpi64.bdl.bdeSize =
615 (2 * sizeof(struct ulp_bde64));
616 iocb->un.fcpi64.bdl.addrLow =
617 putPaddrLow(pdma_phys_bpl);
618 iocb->un.fcpi64.bdl.addrHigh =
619 putPaddrHigh(pdma_phys_bpl);
620 iocb->ulpBdeCount = 1;
621 iocb->ulpLe = 1;
622 }
623 iocb->ulpClass = CLASS3;
624 psb->status = IOSTAT_SUCCESS;
da0436e9 625 /* Put it back into the SCSI buffer list */
eee8877e 626 psb->cur_iocbq.context1 = psb;
1c6f4ef5 627 lpfc_release_scsi_buf_s3(phba, psb);
dea3101e 628
34b02dcd 629 }
dea3101e 630
3772a991 631 return bcnt;
dea3101e
JB		 632}
633
1151e3ec
JS		 634/**
635 * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport
636 * @vport: pointer to lpfc vport data structure.
637 *
638 * This routine is invoked by the vport cleanup for deletions and the cleanup
639 * for an ndlp on removal.
640 **/
641void
642lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport)
643{
644 struct lpfc_hba *phba = vport->phba;
645 struct lpfc_scsi_buf *psb, *next_psb;
646 unsigned long iflag = 0;
647
648 spin_lock_irqsave(&phba->hbalock, iflag);
649 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
650 list_for_each_entry_safe(psb, next_psb,
651 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
652 if (psb->rdata && psb->rdata->pnode
653 && psb->rdata->pnode->vport == vport)
654 psb->rdata = NULL;
655 }
656 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
657 spin_unlock_irqrestore(&phba->hbalock, iflag);
658}
659
da0436e9
JS		 660/**
661 * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort
662 * @phba: pointer to lpfc hba data structure.
663 * @axri: pointer to the fcp xri abort wcqe structure.
664 *
665 * This routine is invoked by the worker thread to process a SLI4 fast-path
666 * FCP aborted xri.
667 **/
668void
669lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba,
670 struct sli4_wcqe_xri_aborted *axri)
671{
672 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
19ca7609 673 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
da0436e9
JS		 674 struct lpfc_scsi_buf *psb, *next_psb;
675 unsigned long iflag = 0;
0f65ff68
JS		 676 struct lpfc_iocbq *iocbq;
677 int i;
19ca7609
JS		 678 struct lpfc_nodelist *ndlp;
679 int rrq_empty = 0;
589a52d6 680 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
da0436e9 681
0f65ff68
JS		 682 spin_lock_irqsave(&phba->hbalock, iflag);
683 spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
da0436e9
JS		 684 list_for_each_entry_safe(psb, next_psb,
685 &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) {
686 if (psb->cur_iocbq.sli4_xritag == xri) {
687 list_del(&psb->list);
341af102 688 psb->exch_busy = 0;
da0436e9 689 psb->status = IOSTAT_SUCCESS;
0f65ff68
JS		 690 spin_unlock(
691 &phba->sli4_hba.abts_scsi_buf_list_lock);
1151e3ec
JS		 692 if (psb->rdata && psb->rdata->pnode)
693 ndlp = psb->rdata->pnode;
694 else
695 ndlp = NULL;
696
19ca7609 697 rrq_empty = list_empty(&phba->active_rrq_list);
0f65ff68 698 spin_unlock_irqrestore(&phba->hbalock, iflag);
cb69f7de 699 if (ndlp) {
ee0f4fe1
JS		 700 lpfc_set_rrq_active(phba, ndlp,
701 psb->cur_iocbq.sli4_lxritag, rxid, 1);
cb69f7de
JS		 702 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
703 }
da0436e9 704 lpfc_release_scsi_buf_s4(phba, psb);
19ca7609
JS		 705 if (rrq_empty)
706 lpfc_worker_wake_up(phba);
da0436e9
JS		 707 return;
708 }
709 }
0f65ff68
JS		 710 spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
711 for (i = 1; i <= phba->sli.last_iotag; i++) {
712 iocbq = phba->sli.iocbq_lookup[i];
713
714 if (!(iocbq->iocb_flag & LPFC_IO_FCP) ||
715 (iocbq->iocb_flag & LPFC_IO_LIBDFC))
716 continue;
717 if (iocbq->sli4_xritag != xri)
718 continue;
719 psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
720 psb->exch_busy = 0;
721 spin_unlock_irqrestore(&phba->hbalock, iflag);
0e9bb8d7 722 if (!list_empty(&pring->txq))
589a52d6 723 lpfc_worker_wake_up(phba);
0f65ff68
JS		 724 return;
725
726 }
727 spin_unlock_irqrestore(&phba->hbalock, iflag);
da0436e9
JS		 728}
729
730/**
8a9d2e80 731 * lpfc_sli4_post_scsi_sgl_list - Psot blocks of scsi buffer sgls from a list
da0436e9 732 * @phba: pointer to lpfc hba data structure.
8a9d2e80 733 * @post_sblist: pointer to the scsi buffer list.
da0436e9 734 *
8a9d2e80
JS		 735 * This routine walks a list of scsi buffers that was passed in. It attempts
736 * to construct blocks of scsi buffer sgls which contains contiguous xris and
737 * uses the non-embedded SGL block post mailbox commands to post to the port.
738 * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use
739 * embedded SGL post mailbox command for posting. The @post_sblist passed in
740 * must be local list, thus no lock is needed when manipulate the list.
da0436e9 741 *
8a9d2e80 742 * Returns: 0 = failure, non-zero number of successfully posted buffers.
da0436e9
JS		 743 **/
744int
8a9d2e80
JS		 745lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba,
746 struct list_head *post_sblist, int sb_count)
da0436e9 747{
8a9d2e80 748 struct lpfc_scsi_buf *psb, *psb_next;
96f7077f 749 int status, sgl_size;
8a9d2e80
JS		 750 int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0;
751 dma_addr_t pdma_phys_bpl1;
752 int last_xritag = NO_XRI;
753 LIST_HEAD(prep_sblist);
754 LIST_HEAD(blck_sblist);
755 LIST_HEAD(scsi_sblist);
756
757 /* sanity check */
758 if (sb_count <= 0)
759 return -EINVAL;
760
96f7077f
JS		 761 sgl_size = phba->cfg_sg_dma_buf_size -
762 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
763
8a9d2e80
JS		 764 list_for_each_entry_safe(psb, psb_next, post_sblist, list) {
765 list_del_init(&psb->list);
766 block_cnt++;
767 if ((last_xritag != NO_XRI) &&
768 (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) {
769 /* a hole in xri block, form a sgl posting block */
770 list_splice_init(&prep_sblist, &blck_sblist);
771 post_cnt = block_cnt - 1;
772 /* prepare list for next posting block */
773 list_add_tail(&psb->list, &prep_sblist);
774 block_cnt = 1;
775 } else {
776 /* prepare list for next posting block */
777 list_add_tail(&psb->list, &prep_sblist);
778 /* enough sgls for non-embed sgl mbox command */
779 if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) {
780 list_splice_init(&prep_sblist, &blck_sblist);
781 post_cnt = block_cnt;
782 block_cnt = 0;
da0436e9 783 }
8a9d2e80
JS		 784 }
785 num_posting++;
786 last_xritag = psb->cur_iocbq.sli4_xritag;
da0436e9 787
8a9d2e80
JS		 788 /* end of repost sgl list condition for SCSI buffers */
789 if (num_posting == sb_count) {
790 if (post_cnt == 0) {
791 /* last sgl posting block */
792 list_splice_init(&prep_sblist, &blck_sblist);
793 post_cnt = block_cnt;
794 } else if (block_cnt == 1) {
795 /* last single sgl with non-contiguous xri */
96f7077f 796 if (sgl_size > SGL_PAGE_SIZE)
8a9d2e80
JS		 797 pdma_phys_bpl1 = psb->dma_phys_bpl +
798 SGL_PAGE_SIZE;
799 else
800 pdma_phys_bpl1 = 0;
801 status = lpfc_sli4_post_sgl(phba,
802 psb->dma_phys_bpl,
803 pdma_phys_bpl1,
804 psb->cur_iocbq.sli4_xritag);
805 if (status) {
806 /* failure, put on abort scsi list */
807 psb->exch_busy = 1;
808 } else {
809 /* success, put on SCSI buffer list */
810 psb->exch_busy = 0;
811 psb->status = IOSTAT_SUCCESS;
812 num_posted++;
813 }
814 /* success, put on SCSI buffer sgl list */
815 list_add_tail(&psb->list, &scsi_sblist);
816 }
817 }
da0436e9 818
8a9d2e80
JS		 819 /* continue until a nembed page worth of sgls */
820 if (post_cnt == 0)
da0436e9 821 continue;
8a9d2e80
JS		 822
823 /* post block of SCSI buffer list sgls */
824 status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist,
825 post_cnt);
826
827 /* don't reset xirtag due to hole in xri block */
828 if (block_cnt == 0)
829 last_xritag = NO_XRI;
830
831 /* reset SCSI buffer post count for next round of posting */
832 post_cnt = 0;
833
834 /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */
835 while (!list_empty(&blck_sblist)) {
836 list_remove_head(&blck_sblist, psb,
837 struct lpfc_scsi_buf, list);
da0436e9 838 if (status) {
8a9d2e80 839 /* failure, put on abort scsi list */
341af102 840 psb->exch_busy = 1;
341af102 841 } else {
8a9d2e80 842 /* success, put on SCSI buffer list */
341af102 843 psb->exch_busy = 0;
da0436e9 844 psb->status = IOSTAT_SUCCESS;
8a9d2e80 845 num_posted++;
341af102 846 }
8a9d2e80 847 list_add_tail(&psb->list, &scsi_sblist);
da0436e9
JS		 848 }
849 }
8a9d2e80
JS		 850 /* Push SCSI buffers with sgl posted to the availble list */
851 while (!list_empty(&scsi_sblist)) {
852 list_remove_head(&scsi_sblist, psb,
853 struct lpfc_scsi_buf, list);
854 lpfc_release_scsi_buf_s4(phba, psb);
855 }
856 return num_posted;
857}
858
859/**
860 * lpfc_sli4_repost_scsi_sgl_list - Repsot all the allocated scsi buffer sgls
861 * @phba: pointer to lpfc hba data structure.
862 *
863 * This routine walks the list of scsi buffers that have been allocated and
864 * repost them to the port by using SGL block post. This is needed after a
865 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine
866 * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list
867 * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers.
868 *
869 * Returns: 0 = success, non-zero failure.
870 **/
871int
872lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba)
873{
874 LIST_HEAD(post_sblist);
875 int num_posted, rc = 0;
876
877 /* get all SCSI buffers need to repost to a local list */
a40fc5f0 878 spin_lock_irq(&phba->scsi_buf_list_get_lock);
164cecd1 879 spin_lock(&phba->scsi_buf_list_put_lock);
a40fc5f0
JS		 880 list_splice_init(&phba->lpfc_scsi_buf_list_get, &post_sblist);
881 list_splice(&phba->lpfc_scsi_buf_list_put, &post_sblist);
164cecd1 882 spin_unlock(&phba->scsi_buf_list_put_lock);
a40fc5f0 883 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
8a9d2e80
JS		 884
885 /* post the list of scsi buffer sgls to port if available */
886 if (!list_empty(&post_sblist)) {
887 num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist,
888 phba->sli4_hba.scsi_xri_cnt);
889 /* failed to post any scsi buffer, return error */
890 if (num_posted == 0)
891 rc = -EIO;
892 }
da0436e9
JS		 893 return rc;
894}
895
896/**
897 * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec
898 * @vport: The virtual port for which this call being executed.
899 * @num_to_allocate: The requested number of buffers to allocate.
900 *
8a9d2e80 901 * This routine allocates scsi buffers for device with SLI-4 interface spec,
da0436e9 902 * the scsi buffer contains all the necessary information needed to initiate
8a9d2e80
JS		 903 * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put
904 * them on a list, it post them to the port by using SGL block post.
da0436e9
JS		 905 *
906 * Return codes:
8a9d2e80 907 * int - number of scsi buffers that were allocated and posted.
da0436e9
JS		 908 * 0 = failure, less than num_to_alloc is a partial failure.
909 **/
910static int
911lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc)
912{
913 struct lpfc_hba *phba = vport->phba;
914 struct lpfc_scsi_buf *psb;
915 struct sli4_sge *sgl;
916 IOCB_t *iocb;
917 dma_addr_t pdma_phys_fcp_cmd;
918 dma_addr_t pdma_phys_fcp_rsp;
96f7077f 919 dma_addr_t pdma_phys_bpl;
8a9d2e80 920 uint16_t iotag, lxri = 0;
96f7077f 921 int bcnt, num_posted, sgl_size;
8a9d2e80
JS		 922 LIST_HEAD(prep_sblist);
923 LIST_HEAD(post_sblist);
924 LIST_HEAD(scsi_sblist);
da0436e9 925
96f7077f
JS		 926 sgl_size = phba->cfg_sg_dma_buf_size -
927 (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp));
928
929 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
930 "9068 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n",
931 num_to_alloc, phba->cfg_sg_dma_buf_size, sgl_size,
932 (int)sizeof(struct fcp_cmnd),
933 (int)sizeof(struct fcp_rsp));
934
da0436e9
JS		 935 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
936 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
937 if (!psb)
938 break;
da0436e9 939 /*
8a9d2e80
JS		 940 * Get memory from the pci pool to map the virt space to
941 * pci bus space for an I/O. The DMA buffer includes space
942 * for the struct fcp_cmnd, struct fcp_rsp and the number
943 * of bde's necessary to support the sg_tablesize.
da0436e9
JS		 944 */
945 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool,
946 GFP_KERNEL, &psb->dma_handle);
947 if (!psb->data) {
948 kfree(psb);
949 break;
950 }
da0436e9
JS		 951 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
952
092cb034
JS		 953 /*
954 * 4K Page alignment is CRITICAL to BlockGuard, double check
955 * to be sure.
956 */
957 if (phba->cfg_enable_bg && (((unsigned long)(psb->data) &
958 (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
96f7077f
JS		 959 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
960 psb->data, psb->dma_handle);
961 kfree(psb);
962 break;
963 }
964
f7bc6434
JS		 965
966 lxri = lpfc_sli4_next_xritag(phba);
967 if (lxri == NO_XRI) {
b92938b4 968 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
f7bc6434 969 psb->data, psb->dma_handle);
da0436e9
JS		 970 kfree(psb);
971 break;
972 }
973
f7bc6434
JS		 974 /* Allocate iotag for psb->cur_iocbq. */
975 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
976 if (iotag == 0) {
da0436e9 977 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
f7bc6434 978 psb->data, psb->dma_handle);
da0436e9 979 kfree(psb);
f7bc6434
JS		 980 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
981 "3368 Failed to allocated IOTAG for"
982 " XRI:0x%x\n", lxri);
983 lpfc_sli4_free_xri(phba, lxri);
da0436e9
JS		 984 break;
985 }
6d368e53
JS		 986 psb->cur_iocbq.sli4_lxritag = lxri;
987 psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
da0436e9 988 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
da0436e9 989 psb->fcp_bpl = psb->data;
96f7077f 990 psb->fcp_cmnd = (psb->data + sgl_size);
da0436e9
JS		 991 psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd +
992 sizeof(struct fcp_cmnd));
993
994 /* Initialize local short-hand pointers. */
995 sgl = (struct sli4_sge *)psb->fcp_bpl;
996 pdma_phys_bpl = psb->dma_handle;
96f7077f 997 pdma_phys_fcp_cmd = (psb->dma_handle + sgl_size);
da0436e9
JS		 998 pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd);
999
1000 /*
8a9d2e80
JS		 1001 * The first two bdes are the FCP_CMD and FCP_RSP.
1002 * The balance are sg list bdes. Initialize the
1003 * first two and leave the rest for queuecommand.
da0436e9
JS		 1004 */
1005 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd));
1006 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd));
0558056c 1007 sgl->word2 = le32_to_cpu(sgl->word2);
da0436e9
JS		 1008 bf_set(lpfc_sli4_sge_last, sgl, 0);
1009 sgl->word2 = cpu_to_le32(sgl->word2);
28baac74 1010 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd));
da0436e9
JS		 1011 sgl++;
1012
1013 /* Setup the physical region for the FCP RSP */
1014 sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp));
1015 sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp));
0558056c 1016 sgl->word2 = le32_to_cpu(sgl->word2);
da0436e9
JS		 1017 bf_set(lpfc_sli4_sge_last, sgl, 1);
1018 sgl->word2 = cpu_to_le32(sgl->word2);
28baac74 1019 sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp));
da0436e9
JS		 1020
1021 /*
1022 * Since the IOCB for the FCP I/O is built into this
1023 * lpfc_scsi_buf, initialize it with all known data now.
1024 */
1025 iocb = &psb->cur_iocbq.iocb;
1026 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
1027 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64;
1028 /* setting the BLP size to 2 * sizeof BDE may not be correct.
1029 * We are setting the bpl to point to out sgl. An sgl's
1030 * entries are 16 bytes, a bpl entries are 12 bytes.
1031 */
1032 iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd);
1033 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd);
1034 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd);
1035 iocb->ulpBdeCount = 1;
1036 iocb->ulpLe = 1;
1037 iocb->ulpClass = CLASS3;
8a9d2e80 1038 psb->cur_iocbq.context1 = psb;
da0436e9 1039 psb->dma_phys_bpl = pdma_phys_bpl;
da0436e9 1040
8a9d2e80
JS		 1041 /* add the scsi buffer to a post list */
1042 list_add_tail(&psb->list, &post_sblist);
a40fc5f0 1043 spin_lock_irq(&phba->scsi_buf_list_get_lock);
8a9d2e80 1044 phba->sli4_hba.scsi_xri_cnt++;
a40fc5f0 1045 spin_unlock_irq(&phba->scsi_buf_list_get_lock);
8a9d2e80
JS		 1046 }
1047 lpfc_printf_log(phba, KERN_INFO, LOG_BG,
1048 "3021 Allocate %d out of %d requested new SCSI "
1049 "buffers\n", bcnt, num_to_alloc);
1050
1051 /* post the list of scsi buffer sgls to port if available */
1052 if (!list_empty(&post_sblist))
1053 num_posted = lpfc_sli4_post_scsi_sgl_list(phba,
1054 &post_sblist, bcnt);
1055 else
1056 num_posted = 0;
1057
1058 return num_posted;
da0436e9
JS		 1059}
1060
9bad7671 1061/**
3772a991
JS		 1062 * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator
1063 * @vport: The virtual port for which this call being executed.
1064 * @num_to_allocate: The requested number of buffers to allocate.
1065 *
1066 * This routine wraps the actual SCSI buffer allocator function pointer from
1067 * the lpfc_hba struct.
1068 *
1069 * Return codes:
1070 * int - number of scsi buffers that were allocated.
1071 * 0 = failure, less than num_to_alloc is a partial failure.
1072 **/
1073static inline int
1074lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc)
1075{
1076 return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc);
1077}
1078
1079/**
19ca7609 1080 * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
3772a991 1081 * @phba: The HBA for which this call is being executed.
9bad7671
JS		 1082 *
1083 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1084 * and returns to caller.
1085 *
1086 * Return codes:
1087 * NULL - Error
1088 * Pointer to lpfc_scsi_buf - Success
1089 **/
455c53ec 1090static struct lpfc_scsi_buf*
19ca7609 1091lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
dea3101e 1092{
0bd4ca25 1093 struct lpfc_scsi_buf * lpfc_cmd = NULL;
a40fc5f0 1094 struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get;
164cecd1 1095 unsigned long iflag = 0;
a40fc5f0 1096
164cecd1 1097 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
a40fc5f0
JS		 1098 list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_scsi_buf,
1099 list);
1100 if (!lpfc_cmd) {
164cecd1 1101 spin_lock(&phba->scsi_buf_list_put_lock);
a40fc5f0
JS		 1102 list_splice(&phba->lpfc_scsi_buf_list_put,
1103 &phba->lpfc_scsi_buf_list_get);
1104 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
1105 list_remove_head(scsi_buf_list_get, lpfc_cmd,
1106 struct lpfc_scsi_buf, list);
164cecd1 1107 spin_unlock(&phba->scsi_buf_list_put_lock);
1dcb58e5 1108 }
164cecd1 1109 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
0bd4ca25
JSEC		 1110 return lpfc_cmd;
1111}
19ca7609
JS		 1112/**
1113 * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1114 * @phba: The HBA for which this call is being executed.
1115 *
1116 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1117 * and returns to caller.
1118 *
1119 * Return codes:
1120 * NULL - Error
1121 * Pointer to lpfc_scsi_buf - Success
1122 **/
1123static struct lpfc_scsi_buf*
1124lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1125{
3be30e0e 1126 struct lpfc_scsi_buf *lpfc_cmd, *lpfc_cmd_next;
164cecd1 1127 unsigned long iflag = 0;
19ca7609
JS		 1128 int found = 0;
1129
164cecd1 1130 spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag);
3be30e0e
JS		 1131 list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
1132 &phba->lpfc_scsi_buf_list_get, list) {
19ca7609 1133 if (lpfc_test_rrq_active(phba, ndlp,
ee0f4fe1 1134 lpfc_cmd->cur_iocbq.sli4_lxritag))
1151e3ec
JS		 1135 continue;
1136 list_del(&lpfc_cmd->list);
19ca7609 1137 found = 1;
1151e3ec 1138 break;
19ca7609 1139 }
a40fc5f0 1140 if (!found) {
164cecd1 1141 spin_lock(&phba->scsi_buf_list_put_lock);
a40fc5f0
JS		 1142 list_splice(&phba->lpfc_scsi_buf_list_put,
1143 &phba->lpfc_scsi_buf_list_get);
1144 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
164cecd1 1145 spin_unlock(&phba->scsi_buf_list_put_lock);
3be30e0e
JS		 1146 list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next,
1147 &phba->lpfc_scsi_buf_list_get, list) {
a40fc5f0
JS		 1148 if (lpfc_test_rrq_active(
1149 phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag))
1150 continue;
1151 list_del(&lpfc_cmd->list);
1152 found = 1;
1153 break;
1154 }
1155 }
164cecd1 1156 spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag);
1151e3ec
JS		 1157 if (!found)
1158 return NULL;
a40fc5f0 1159 return lpfc_cmd;
19ca7609
JS		 1160}
1161/**
1162 * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA
1163 * @phba: The HBA for which this call is being executed.
1164 *
1165 * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
1166 * and returns to caller.
1167 *
1168 * Return codes:
1169 * NULL - Error
1170 * Pointer to lpfc_scsi_buf - Success
1171 **/
1172static struct lpfc_scsi_buf*
1173lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
1174{
1175 return phba->lpfc_get_scsi_buf(phba, ndlp);
1176}
dea3101e 1177
9bad7671 1178/**
3772a991 1179 * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list
9bad7671
JS		 1180 * @phba: The Hba for which this call is being executed.
1181 * @psb: The scsi buffer which is being released.
1182 *
1183 * This routine releases @psb scsi buffer by adding it to tail of @phba
1184 * lpfc_scsi_buf_list list.
1185 **/
0bd4ca25 1186static void
3772a991 1187lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
0bd4ca25 1188{
875fbdfe 1189 unsigned long iflag = 0;
dea3101e 1190
a40fc5f0
JS		 1191 psb->seg_cnt = 0;
1192 psb->nonsg_phys = 0;
1193 psb->prot_seg_cnt = 0;
1194
1195 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
0bd4ca25 1196 psb->pCmd = NULL;
6a485eb9 1197 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
a40fc5f0
JS		 1198 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1199 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
dea3101e
JB		 1200}
1201
da0436e9
JS		 1202/**
1203 * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list.
1204 * @phba: The Hba for which this call is being executed.
1205 * @psb: The scsi buffer which is being released.
1206 *
1207 * This routine releases @psb scsi buffer by adding it to tail of @phba
1208 * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer
1209 * and cannot be reused for at least RA_TOV amount of time if it was
1210 * aborted.
1211 **/
1212static void
1213lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1214{
1215 unsigned long iflag = 0;
1216
a40fc5f0
JS		 1217 psb->seg_cnt = 0;
1218 psb->nonsg_phys = 0;
1219 psb->prot_seg_cnt = 0;
1220
341af102 1221 if (psb->exch_busy) {
da0436e9
JS		 1222 spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock,
1223 iflag);
1224 psb->pCmd = NULL;
1225 list_add_tail(&psb->list,
1226 &phba->sli4_hba.lpfc_abts_scsi_buf_list);
1227 spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock,
1228 iflag);
1229 } else {
da0436e9 1230 psb->pCmd = NULL;
6a485eb9 1231 psb->cur_iocbq.iocb_flag = LPFC_IO_FCP;
a40fc5f0
JS		 1232 spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag);
1233 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put);
1234 spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag);
da0436e9
JS		 1235 }
1236}
1237
9bad7671 1238/**
3772a991
JS		 1239 * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list.
1240 * @phba: The Hba for which this call is being executed.
1241 * @psb: The scsi buffer which is being released.
1242 *
1243 * This routine releases @psb scsi buffer by adding it to tail of @phba
1244 * lpfc_scsi_buf_list list.
1245 **/
1246static void
1247lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
1248{
1249
1250 phba->lpfc_release_scsi_buf(phba, psb);
1251}
1252
1253/**
1254 * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
9bad7671
JS		 1255 * @phba: The Hba for which this call is being executed.
1256 * @lpfc_cmd: The scsi buffer which is going to be mapped.
1257 *
1258 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3772a991
JS		 1259 * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans
1260 * through sg elements and format the bdea. This routine also initializes all
1261 * IOCB fields which are dependent on scsi command request buffer.
9bad7671
JS		 1262 *
1263 * Return codes:
1264 * 1 - Error
1265 * 0 - Success
1266 **/
dea3101e 1267static int
3772a991 1268lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
dea3101e
JB		 1269{
1270 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
1271 struct scatterlist *sgel = NULL;
1272 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
1273 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
0f65ff68 1274 struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq;
dea3101e 1275 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
34b02dcd 1276 struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde;
dea3101e 1277 dma_addr_t physaddr;
34b02dcd 1278 uint32_t num_bde = 0;
a0b4f78f 1279 int nseg, datadir = scsi_cmnd->sc_data_direction;
dea3101e
JB		 1280
1281 /*
1282 * There are three possibilities here - use scatter-gather segment, use
1283 * the single mapping, or neither. Start the lpfc command prep by
1284 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
1285 * data bde entry.
1286 */
1287 bpl += 2;
c59fd9eb 1288 if (scsi_sg_count(scsi_cmnd)) {
dea3101e
JB		 1289 /*
1290 * The driver stores the segment count returned from pci_map_sg
1291 * because this a count of dma-mappings used to map the use_sg
1292 * pages. They are not guaranteed to be the same for those
1293 * architectures that implement an IOMMU.
1294 */
dea3101e 1295
c59fd9eb
FT		 1296 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
1297 scsi_sg_count(scsi_cmnd), datadir);
1298 if (unlikely(!nseg))
1299 return 1;
1300
a0b4f78f 1301 lpfc_cmd->seg_cnt = nseg;
dea3101e 1302 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
6a9c52cf
JS		 1303 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1304 "9064 BLKGRD: %s: Too many sg segments from "
e2a0a9d6 1305 "dma_map_sg. Config %d, seg_cnt %d\n",
cadbd4a5 1306 __func__, phba->cfg_sg_seg_cnt,
dea3101e 1307 lpfc_cmd->seg_cnt);
96f7077f 1308 lpfc_cmd->seg_cnt = 0;
a0b4f78f 1309 scsi_dma_unmap(scsi_cmnd);
dea3101e
JB		 1310 return 1;
1311 }
1312
1313 /*
1314 * The driver established a maximum scatter-gather segment count
1315 * during probe that limits the number of sg elements in any
1316 * single scsi command. Just run through the seg_cnt and format
1317 * the bde's.
34b02dcd
JS		 1318 * When using SLI-3 the driver will try to fit all the BDEs into
1319 * the IOCB. If it can't then the BDEs get added to a BPL as it
1320 * does for SLI-2 mode.
dea3101e 1321 */
34b02dcd 1322 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
dea3101e 1323 physaddr = sg_dma_address(sgel);
34b02dcd 1324 if (phba->sli_rev == 3 &&
e2a0a9d6 1325 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
0f65ff68 1326 !(iocbq->iocb_flag & DSS_SECURITY_OP) &&
34b02dcd
JS		 1327 nseg <= LPFC_EXT_DATA_BDE_COUNT) {
1328 data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1329 data_bde->tus.f.bdeSize = sg_dma_len(sgel);
1330 data_bde->addrLow = putPaddrLow(physaddr);
1331 data_bde->addrHigh = putPaddrHigh(physaddr);
1332 data_bde++;
1333 } else {
1334 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1335 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1336 bpl->tus.w = le32_to_cpu(bpl->tus.w);
1337 bpl->addrLow =
1338 le32_to_cpu(putPaddrLow(physaddr));
1339 bpl->addrHigh =
1340 le32_to_cpu(putPaddrHigh(physaddr));
1341 bpl++;
1342 }
dea3101e 1343 }
c59fd9eb 1344 }
dea3101e
JB		 1345
1346 /*
1347 * Finish initializing those IOCB fields that are dependent on the
34b02dcd
JS		 1348 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
1349 * explicitly reinitialized and for SLI-3 the extended bde count is
1350 * explicitly reinitialized since all iocb memory resources are reused.
dea3101e 1351 */
e2a0a9d6 1352 if (phba->sli_rev == 3 &&
0f65ff68
JS		 1353 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
1354 !(iocbq->iocb_flag & DSS_SECURITY_OP)) {
34b02dcd
JS		 1355 if (num_bde > LPFC_EXT_DATA_BDE_COUNT) {
1356 /*
1357 * The extended IOCB format can only fit 3 BDE or a BPL.
1358 * This I/O has more than 3 BDE so the 1st data bde will
1359 * be a BPL that is filled in here.
1360 */
1361 physaddr = lpfc_cmd->dma_handle;
1362 data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64;
1363 data_bde->tus.f.bdeSize = (num_bde *
1364 sizeof(struct ulp_bde64));
1365 physaddr += (sizeof(struct fcp_cmnd) +
1366 sizeof(struct fcp_rsp) +
1367 (2 * sizeof(struct ulp_bde64)));
1368 data_bde->addrHigh = putPaddrHigh(physaddr);
1369 data_bde->addrLow = putPaddrLow(physaddr);
25985edc 1370 /* ebde count includes the response bde and data bpl */
34b02dcd
JS		 1371 iocb_cmd->unsli3.fcp_ext.ebde_count = 2;
1372 } else {
25985edc 1373 /* ebde count includes the response bde and data bdes */
34b02dcd
JS		 1374 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
1375 }
1376 } else {
1377 iocb_cmd->un.fcpi64.bdl.bdeSize =
1378 ((num_bde + 2) * sizeof(struct ulp_bde64));
0f65ff68 1379 iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1);
34b02dcd 1380 }
09372820 1381 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
e2a0a9d6
JS		 1382
1383 /*
1384 * Due to difference in data length between DIF/non-DIF paths,
1385 * we need to set word 4 of IOCB here
1386 */
a257bf90 1387 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
e2a0a9d6
JS		 1388 return 0;
1389}
1390
f9bb2da1 1391#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 1392
9a6b09c0
JS		 1393/* Return if if error injection is detected by Initiator */
1394#define BG_ERR_INIT 0x1
1395/* Return if if error injection is detected by Target */
1396#define BG_ERR_TGT 0x2
1397/* Return if if swapping CSUM<-->CRC is required for error injection */
1398#define BG_ERR_SWAP 0x10
1399/* Return if disabling Guard/Ref/App checking is required for error injection */
1400#define BG_ERR_CHECK 0x20
acd6859b
JS		 1401
1402/**
1403 * lpfc_bg_err_inject - Determine if we should inject an error
1404 * @phba: The Hba for which this call is being executed.
f9bb2da1
JS		 1405 * @sc: The SCSI command to examine
1406 * @reftag: (out) BlockGuard reference tag for transmitted data
1407 * @apptag: (out) BlockGuard application tag for transmitted data
1408 * @new_guard (in) Value to replace CRC with if needed
1409 *
9a6b09c0 1410 * Returns BG_ERR_* bit mask or 0 if request ignored
acd6859b 1411 **/
f9bb2da1
JS		 1412static int
1413lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1414 uint32_t *reftag, uint16_t *apptag, uint32_t new_guard)
1415{
1416 struct scatterlist *sgpe; /* s/g prot entry */
1417 struct scatterlist *sgde; /* s/g data entry */
9a6b09c0 1418 struct lpfc_scsi_buf *lpfc_cmd = NULL;
acd6859b 1419 struct scsi_dif_tuple *src = NULL;
4ac9b226
JS		 1420 struct lpfc_nodelist *ndlp;
1421 struct lpfc_rport_data *rdata;
f9bb2da1
JS		 1422 uint32_t op = scsi_get_prot_op(sc);
1423 uint32_t blksize;
1424 uint32_t numblks;
1425 sector_t lba;
1426 int rc = 0;
acd6859b 1427 int blockoff = 0;
f9bb2da1
JS		 1428
1429 if (op == SCSI_PROT_NORMAL)
1430 return 0;
1431
acd6859b
JS		 1432 sgpe = scsi_prot_sglist(sc);
1433 sgde = scsi_sglist(sc);
f9bb2da1 1434 lba = scsi_get_lba(sc);
4ac9b226
JS		 1435
1436 /* First check if we need to match the LBA */
f9bb2da1
JS		 1437 if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) {
1438 blksize = lpfc_cmd_blksize(sc);
1439 numblks = (scsi_bufflen(sc) + blksize - 1) / blksize;
1440
1441 /* Make sure we have the right LBA if one is specified */
1442 if ((phba->lpfc_injerr_lba < lba) ||
1443 (phba->lpfc_injerr_lba >= (lba + numblks)))
1444 return 0;
acd6859b
JS		 1445 if (sgpe) {
1446 blockoff = phba->lpfc_injerr_lba - lba;
1447 numblks = sg_dma_len(sgpe) /
1448 sizeof(struct scsi_dif_tuple);
1449 if (numblks < blockoff)
1450 blockoff = numblks;
acd6859b 1451 }
f9bb2da1
JS		 1452 }
1453
4ac9b226 1454 /* Next check if we need to match the remote NPortID or WWPN */
1ba981fd 1455 rdata = lpfc_rport_data_from_scsi_device(sc->device);
4ac9b226
JS		 1456 if (rdata && rdata->pnode) {
1457 ndlp = rdata->pnode;
1458
1459 /* Make sure we have the right NPortID if one is specified */
1460 if (phba->lpfc_injerr_nportid &&
1461 (phba->lpfc_injerr_nportid != ndlp->nlp_DID))
1462 return 0;
1463
1464 /*
1465 * Make sure we have the right WWPN if one is specified.
1466 * wwn[0] should be a non-zero NAA in a good WWPN.
1467 */
1468 if (phba->lpfc_injerr_wwpn.u.wwn[0] &&
1469 (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn,
1470 sizeof(struct lpfc_name)) != 0))
1471 return 0;
1472 }
1473
1474 /* Setup a ptr to the protection data if the SCSI host provides it */
1475 if (sgpe) {
1476 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
1477 src += blockoff;
1478 lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble;
1479 }
1480
f9bb2da1
JS		 1481 /* Should we change the Reference Tag */
1482 if (reftag) {
acd6859b
JS		 1483 if (phba->lpfc_injerr_wref_cnt) {
1484 switch (op) {
1485 case SCSI_PROT_WRITE_PASS:
9a6b09c0
JS		 1486 if (src) {
1487 /*
1488 * For WRITE_PASS, force the error
1489 * to be sent on the wire. It should
1490 * be detected by the Target.
1491 * If blockoff != 0 error will be
1492 * inserted in middle of the IO.
1493 */
acd6859b
JS		 1494
1495 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1496 "9076 BLKGRD: Injecting reftag error: "
1497 "write lba x%lx + x%x oldrefTag x%x\n",
1498 (unsigned long)lba, blockoff,
9a6b09c0 1499 be32_to_cpu(src->ref_tag));
f9bb2da1 1500
acd6859b 1501 /*
9a6b09c0
JS		 1502 * Save the old ref_tag so we can
1503 * restore it on completion.
acd6859b 1504 */
9a6b09c0
JS		 1505 if (lpfc_cmd) {
1506 lpfc_cmd->prot_data_type =
1507 LPFC_INJERR_REFTAG;
1508 lpfc_cmd->prot_data_segment =
1509 src;
1510 lpfc_cmd->prot_data =
1511 src->ref_tag;
1512 }
1513 src->ref_tag = cpu_to_be32(0xDEADBEEF);
acd6859b 1514 phba->lpfc_injerr_wref_cnt--;
4ac9b226
JS		 1515 if (phba->lpfc_injerr_wref_cnt == 0) {
1516 phba->lpfc_injerr_nportid = 0;
1517 phba->lpfc_injerr_lba =
1518 LPFC_INJERR_LBA_OFF;
1519 memset(&phba->lpfc_injerr_wwpn,
1520 0, sizeof(struct lpfc_name));
1521 }
9a6b09c0
JS		 1522 rc = BG_ERR_TGT | BG_ERR_CHECK;
1523
acd6859b
JS		 1524 break;
1525 }
1526 /* Drop thru */
9a6b09c0 1527 case SCSI_PROT_WRITE_INSERT:
acd6859b 1528 /*
9a6b09c0
JS		 1529 * For WRITE_INSERT, force the error
1530 * to be sent on the wire. It should be
1531 * detected by the Target.
acd6859b 1532 */
9a6b09c0 1533 /* DEADBEEF will be the reftag on the wire */
acd6859b
JS		 1534 *reftag = 0xDEADBEEF;
1535 phba->lpfc_injerr_wref_cnt--;
4ac9b226
JS		 1536 if (phba->lpfc_injerr_wref_cnt == 0) {
1537 phba->lpfc_injerr_nportid = 0;
1538 phba->lpfc_injerr_lba =
1539 LPFC_INJERR_LBA_OFF;
1540 memset(&phba->lpfc_injerr_wwpn,
1541 0, sizeof(struct lpfc_name));
1542 }
9a6b09c0 1543 rc = BG_ERR_TGT | BG_ERR_CHECK;
acd6859b
JS		 1544
1545 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1546 "9078 BLKGRD: Injecting reftag error: "
acd6859b
JS		 1547 "write lba x%lx\n", (unsigned long)lba);
1548 break;
9a6b09c0 1549 case SCSI_PROT_WRITE_STRIP:
acd6859b 1550 /*
9a6b09c0
JS		 1551 * For WRITE_STRIP and WRITE_PASS,
1552 * force the error on data
1553 * being copied from SLI-Host to SLI-Port.
acd6859b 1554 */
f9bb2da1
JS		 1555 *reftag = 0xDEADBEEF;
1556 phba->lpfc_injerr_wref_cnt--;
4ac9b226
JS		 1557 if (phba->lpfc_injerr_wref_cnt == 0) {
1558 phba->lpfc_injerr_nportid = 0;
1559 phba->lpfc_injerr_lba =
1560 LPFC_INJERR_LBA_OFF;
1561 memset(&phba->lpfc_injerr_wwpn,
1562 0, sizeof(struct lpfc_name));
1563 }
9a6b09c0 1564 rc = BG_ERR_INIT;
f9bb2da1
JS		 1565
1566 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1567 "9077 BLKGRD: Injecting reftag error: "
f9bb2da1 1568 "write lba x%lx\n", (unsigned long)lba);
acd6859b 1569 break;
f9bb2da1 1570 }
acd6859b
JS		 1571 }
1572 if (phba->lpfc_injerr_rref_cnt) {
1573 switch (op) {
1574 case SCSI_PROT_READ_INSERT:
acd6859b
JS		 1575 case SCSI_PROT_READ_STRIP:
1576 case SCSI_PROT_READ_PASS:
1577 /*
1578 * For READ_STRIP and READ_PASS, force the
1579 * error on data being read off the wire. It
1580 * should force an IO error to the driver.
1581 */
f9bb2da1
JS		 1582 *reftag = 0xDEADBEEF;
1583 phba->lpfc_injerr_rref_cnt--;
4ac9b226
JS		 1584 if (phba->lpfc_injerr_rref_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 }
acd6859b 1591 rc = BG_ERR_INIT;
f9bb2da1
JS		 1592
1593 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 1594 "9079 BLKGRD: Injecting reftag error: "
f9bb2da1 1595 "read lba x%lx\n", (unsigned long)lba);
acd6859b 1596 break;
f9bb2da1
JS		 1597 }
1598 }
1599 }
1600
1601 /* Should we change the Application Tag */
1602 if (apptag) {
acd6859b
JS		 1603 if (phba->lpfc_injerr_wapp_cnt) {
1604 switch (op) {
1605 case SCSI_PROT_WRITE_PASS:
4ac9b226 1606 if (src) {
9a6b09c0
JS		 1607 /*
1608 * For WRITE_PASS, force the error
1609 * to be sent on the wire. It should
1610 * be detected by the Target.
1611 * If blockoff != 0 error will be
1612 * inserted in middle of the IO.
1613 */
1614
acd6859b
JS		 1615 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1616 "9080 BLKGRD: Injecting apptag error: "
1617 "write lba x%lx + x%x oldappTag x%x\n",
1618 (unsigned long)lba, blockoff,
9a6b09c0 1619 be16_to_cpu(src->app_tag));
acd6859b
JS		 1620
1621 /*
9a6b09c0
JS		 1622 * Save the old app_tag so we can
1623 * restore it on completion.
acd6859b 1624 */
9a6b09c0
JS		 1625 if (lpfc_cmd) {
1626 lpfc_cmd->prot_data_type =
1627 LPFC_INJERR_APPTAG;
1628 lpfc_cmd->prot_data_segment =
1629 src;
1630 lpfc_cmd->prot_data =
1631 src->app_tag;
1632 }
1633 src->app_tag = cpu_to_be16(0xDEAD);
acd6859b 1634 phba->lpfc_injerr_wapp_cnt--;
4ac9b226
JS		 1635 if (phba->lpfc_injerr_wapp_cnt == 0) {
1636 phba->lpfc_injerr_nportid = 0;
1637 phba->lpfc_injerr_lba =
1638 LPFC_INJERR_LBA_OFF;
1639 memset(&phba->lpfc_injerr_wwpn,
1640 0, sizeof(struct lpfc_name));
1641 }
9a6b09c0 1642 rc = BG_ERR_TGT | BG_ERR_CHECK;
acd6859b
JS		 1643 break;
1644 }
1645 /* Drop thru */
9a6b09c0 1646 case SCSI_PROT_WRITE_INSERT:
acd6859b 1647 /*
9a6b09c0
JS		 1648 * For WRITE_INSERT, force the
1649 * error to be sent on the wire. It should be
1650 * detected by the Target.
acd6859b 1651 */
9a6b09c0 1652 /* DEAD will be the apptag on the wire */
acd6859b
JS		 1653 *apptag = 0xDEAD;
1654 phba->lpfc_injerr_wapp_cnt--;
4ac9b226
JS		 1655 if (phba->lpfc_injerr_wapp_cnt == 0) {
1656 phba->lpfc_injerr_nportid = 0;
1657 phba->lpfc_injerr_lba =
1658 LPFC_INJERR_LBA_OFF;
1659 memset(&phba->lpfc_injerr_wwpn,
1660 0, sizeof(struct lpfc_name));
1661 }
9a6b09c0 1662 rc = BG_ERR_TGT | BG_ERR_CHECK;
f9bb2da1 1663
acd6859b 1664 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1665 "0813 BLKGRD: Injecting apptag error: "
acd6859b
JS		 1666 "write lba x%lx\n", (unsigned long)lba);
1667 break;
9a6b09c0 1668 case SCSI_PROT_WRITE_STRIP:
acd6859b 1669 /*
9a6b09c0
JS		 1670 * For WRITE_STRIP and WRITE_PASS,
1671 * force the error on data
1672 * being copied from SLI-Host to SLI-Port.
acd6859b 1673 */
f9bb2da1
JS		 1674 *apptag = 0xDEAD;
1675 phba->lpfc_injerr_wapp_cnt--;
4ac9b226
JS		 1676 if (phba->lpfc_injerr_wapp_cnt == 0) {
1677 phba->lpfc_injerr_nportid = 0;
1678 phba->lpfc_injerr_lba =
1679 LPFC_INJERR_LBA_OFF;
1680 memset(&phba->lpfc_injerr_wwpn,
1681 0, sizeof(struct lpfc_name));
1682 }
9a6b09c0 1683 rc = BG_ERR_INIT;
f9bb2da1
JS		 1684
1685 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1686 "0812 BLKGRD: Injecting apptag error: "
f9bb2da1 1687 "write lba x%lx\n", (unsigned long)lba);
acd6859b 1688 break;
f9bb2da1 1689 }
acd6859b
JS		 1690 }
1691 if (phba->lpfc_injerr_rapp_cnt) {
1692 switch (op) {
1693 case SCSI_PROT_READ_INSERT:
acd6859b
JS		 1694 case SCSI_PROT_READ_STRIP:
1695 case SCSI_PROT_READ_PASS:
1696 /*
1697 * For READ_STRIP and READ_PASS, force the
1698 * error on data being read off the wire. It
1699 * should force an IO error to the driver.
1700 */
f9bb2da1
JS		 1701 *apptag = 0xDEAD;
1702 phba->lpfc_injerr_rapp_cnt--;
4ac9b226
JS		 1703 if (phba->lpfc_injerr_rapp_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 }
acd6859b 1710 rc = BG_ERR_INIT;
f9bb2da1
JS		 1711
1712 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 1713 "0814 BLKGRD: Injecting apptag error: "
f9bb2da1 1714 "read lba x%lx\n", (unsigned long)lba);
acd6859b 1715 break;
f9bb2da1
JS		 1716 }
1717 }
1718 }
1719
acd6859b 1720
f9bb2da1 1721 /* Should we change the Guard Tag */
acd6859b
JS		 1722 if (new_guard) {
1723 if (phba->lpfc_injerr_wgrd_cnt) {
1724 switch (op) {
1725 case SCSI_PROT_WRITE_PASS:
9a6b09c0 1726 rc = BG_ERR_CHECK;
acd6859b 1727 /* Drop thru */
9a6b09c0
JS		 1728
1729 case SCSI_PROT_WRITE_INSERT:
acd6859b 1730 /*
9a6b09c0
JS		 1731 * For WRITE_INSERT, force the
1732 * error to be sent on the wire. It should be
1733 * detected by the Target.
acd6859b
JS		 1734 */
1735 phba->lpfc_injerr_wgrd_cnt--;
4ac9b226
JS		 1736 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1737 phba->lpfc_injerr_nportid = 0;
1738 phba->lpfc_injerr_lba =
1739 LPFC_INJERR_LBA_OFF;
1740 memset(&phba->lpfc_injerr_wwpn,
1741 0, sizeof(struct lpfc_name));
1742 }
f9bb2da1 1743
9a6b09c0 1744 rc |= BG_ERR_TGT | BG_ERR_SWAP;
acd6859b 1745 /* Signals the caller to swap CRC->CSUM */
f9bb2da1 1746
acd6859b 1747 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1748 "0817 BLKGRD: Injecting guard error: "
acd6859b
JS		 1749 "write lba x%lx\n", (unsigned long)lba);
1750 break;
9a6b09c0 1751 case SCSI_PROT_WRITE_STRIP:
acd6859b 1752 /*
9a6b09c0
JS		 1753 * For WRITE_STRIP and WRITE_PASS,
1754 * force the error on data
1755 * being copied from SLI-Host to SLI-Port.
acd6859b
JS		 1756 */
1757 phba->lpfc_injerr_wgrd_cnt--;
4ac9b226
JS		 1758 if (phba->lpfc_injerr_wgrd_cnt == 0) {
1759 phba->lpfc_injerr_nportid = 0;
1760 phba->lpfc_injerr_lba =
1761 LPFC_INJERR_LBA_OFF;
1762 memset(&phba->lpfc_injerr_wwpn,
1763 0, sizeof(struct lpfc_name));
1764 }
f9bb2da1 1765
9a6b09c0 1766 rc = BG_ERR_INIT | BG_ERR_SWAP;
acd6859b
JS		 1767 /* Signals the caller to swap CRC->CSUM */
1768
1769 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
9a6b09c0 1770 "0816 BLKGRD: Injecting guard error: "
acd6859b
JS		 1771 "write lba x%lx\n", (unsigned long)lba);
1772 break;
1773 }
1774 }
1775 if (phba->lpfc_injerr_rgrd_cnt) {
1776 switch (op) {
1777 case SCSI_PROT_READ_INSERT:
acd6859b
JS		 1778 case SCSI_PROT_READ_STRIP:
1779 case SCSI_PROT_READ_PASS:
1780 /*
1781 * For READ_STRIP and READ_PASS, force the
1782 * error on data being read off the wire. It
1783 * should force an IO error to the driver.
1784 */
acd6859b 1785 phba->lpfc_injerr_rgrd_cnt--;
4ac9b226
JS		 1786 if (phba->lpfc_injerr_rgrd_cnt == 0) {
1787 phba->lpfc_injerr_nportid = 0;
1788 phba->lpfc_injerr_lba =
1789 LPFC_INJERR_LBA_OFF;
1790 memset(&phba->lpfc_injerr_wwpn,
1791 0, sizeof(struct lpfc_name));
1792 }
acd6859b 1793
9a6b09c0 1794 rc = BG_ERR_INIT | BG_ERR_SWAP;
acd6859b
JS		 1795 /* Signals the caller to swap CRC->CSUM */
1796
1797 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
1798 "0818 BLKGRD: Injecting guard error: "
1799 "read lba x%lx\n", (unsigned long)lba);
1800 }
f9bb2da1
JS		 1801 }
1802 }
acd6859b 1803
f9bb2da1
JS		 1804 return rc;
1805}
1806#endif
1807
acd6859b
JS		 1808/**
1809 * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with
1810 * the specified SCSI command.
1811 * @phba: The Hba for which this call is being executed.
6c8eea54
JS		 1812 * @sc: The SCSI command to examine
1813 * @txopt: (out) BlockGuard operation for transmitted data
1814 * @rxopt: (out) BlockGuard operation for received data
1815 *
1816 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1817 *
acd6859b 1818 **/
e2a0a9d6 1819static int
6c8eea54
JS		 1820lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1821 uint8_t *txop, uint8_t *rxop)
e2a0a9d6 1822{
6c8eea54 1823 uint8_t ret = 0;
e2a0a9d6 1824
9c6aa9d7 1825 if (lpfc_cmd_guard_csum(sc)) {
e2a0a9d6
JS		 1826 switch (scsi_get_prot_op(sc)) {
1827 case SCSI_PROT_READ_INSERT:
1828 case SCSI_PROT_WRITE_STRIP:
6c8eea54 1829 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
4ac9b226 1830 *txop = BG_OP_IN_CSUM_OUT_NODIF;
e2a0a9d6
JS		 1831 break;
1832
1833 case SCSI_PROT_READ_STRIP:
1834 case SCSI_PROT_WRITE_INSERT:
6c8eea54 1835 *rxop = BG_OP_IN_CRC_OUT_NODIF;
4ac9b226 1836 *txop = BG_OP_IN_NODIF_OUT_CRC;
e2a0a9d6
JS		 1837 break;
1838
c6af4042
MP		 1839 case SCSI_PROT_READ_PASS:
1840 case SCSI_PROT_WRITE_PASS:
6c8eea54 1841 *rxop = BG_OP_IN_CRC_OUT_CSUM;
4ac9b226 1842 *txop = BG_OP_IN_CSUM_OUT_CRC;
e2a0a9d6
JS		 1843 break;
1844
e2a0a9d6
JS		 1845 case SCSI_PROT_NORMAL:
1846 default:
6a9c52cf 1847 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
7c56b9fd
JS		 1848 "9063 BLKGRD: Bad op/guard:%d/IP combination\n",
1849 scsi_get_prot_op(sc));
6c8eea54 1850 ret = 1;
e2a0a9d6
JS		 1851 break;
1852
1853 }
7c56b9fd 1854 } else {
e2a0a9d6
JS		 1855 switch (scsi_get_prot_op(sc)) {
1856 case SCSI_PROT_READ_STRIP:
1857 case SCSI_PROT_WRITE_INSERT:
6c8eea54 1858 *rxop = BG_OP_IN_CRC_OUT_NODIF;
4ac9b226 1859 *txop = BG_OP_IN_NODIF_OUT_CRC;
e2a0a9d6
JS		 1860 break;
1861
1862 case SCSI_PROT_READ_PASS:
1863 case SCSI_PROT_WRITE_PASS:
6c8eea54 1864 *rxop = BG_OP_IN_CRC_OUT_CRC;
4ac9b226 1865 *txop = BG_OP_IN_CRC_OUT_CRC;
e2a0a9d6
JS		 1866 break;
1867
e2a0a9d6
JS		 1868 case SCSI_PROT_READ_INSERT:
1869 case SCSI_PROT_WRITE_STRIP:
7c56b9fd 1870 *rxop = BG_OP_IN_NODIF_OUT_CRC;
4ac9b226 1871 *txop = BG_OP_IN_CRC_OUT_NODIF;
7c56b9fd
JS		 1872 break;
1873
e2a0a9d6
JS		 1874 case SCSI_PROT_NORMAL:
1875 default:
6a9c52cf 1876 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
7c56b9fd
JS		 1877 "9075 BLKGRD: Bad op/guard:%d/CRC combination\n",
1878 scsi_get_prot_op(sc));
6c8eea54 1879 ret = 1;
e2a0a9d6
JS		 1880 break;
1881 }
e2a0a9d6
JS		 1882 }
1883
6c8eea54 1884 return ret;
e2a0a9d6
JS		 1885}
1886
acd6859b
JS		 1887#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1888/**
1889 * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with
1890 * the specified SCSI command in order to force a guard tag error.
1891 * @phba: The Hba for which this call is being executed.
1892 * @sc: The SCSI command to examine
1893 * @txopt: (out) BlockGuard operation for transmitted data
1894 * @rxopt: (out) BlockGuard operation for received data
1895 *
1896 * Returns: zero on success; non-zero if tx and/or rx op cannot be determined
1897 *
1898 **/
1899static int
1900lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1901 uint8_t *txop, uint8_t *rxop)
1902{
acd6859b
JS		 1903 uint8_t ret = 0;
1904
9c6aa9d7 1905 if (lpfc_cmd_guard_csum(sc)) {
acd6859b
JS		 1906 switch (scsi_get_prot_op(sc)) {
1907 case SCSI_PROT_READ_INSERT:
1908 case SCSI_PROT_WRITE_STRIP:
acd6859b 1909 *rxop = BG_OP_IN_NODIF_OUT_CRC;
4ac9b226 1910 *txop = BG_OP_IN_CRC_OUT_NODIF;
acd6859b
JS		 1911 break;
1912
1913 case SCSI_PROT_READ_STRIP:
1914 case SCSI_PROT_WRITE_INSERT:
acd6859b 1915 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
4ac9b226 1916 *txop = BG_OP_IN_NODIF_OUT_CSUM;
acd6859b
JS		 1917 break;
1918
1919 case SCSI_PROT_READ_PASS:
1920 case SCSI_PROT_WRITE_PASS:
4ac9b226 1921 *rxop = BG_OP_IN_CSUM_OUT_CRC;
9a6b09c0 1922 *txop = BG_OP_IN_CRC_OUT_CSUM;
acd6859b
JS		 1923 break;
1924
1925 case SCSI_PROT_NORMAL:
1926 default:
1927 break;
1928
1929 }
1930 } else {
1931 switch (scsi_get_prot_op(sc)) {
1932 case SCSI_PROT_READ_STRIP:
1933 case SCSI_PROT_WRITE_INSERT:
acd6859b 1934 *rxop = BG_OP_IN_CSUM_OUT_NODIF;
4ac9b226 1935 *txop = BG_OP_IN_NODIF_OUT_CSUM;
acd6859b
JS		 1936 break;
1937
1938 case SCSI_PROT_READ_PASS:
1939 case SCSI_PROT_WRITE_PASS:
4ac9b226 1940 *rxop = BG_OP_IN_CSUM_OUT_CSUM;
9a6b09c0 1941 *txop = BG_OP_IN_CSUM_OUT_CSUM;
acd6859b
JS		 1942 break;
1943
1944 case SCSI_PROT_READ_INSERT:
1945 case SCSI_PROT_WRITE_STRIP:
acd6859b 1946 *rxop = BG_OP_IN_NODIF_OUT_CSUM;
4ac9b226 1947 *txop = BG_OP_IN_CSUM_OUT_NODIF;
acd6859b
JS		 1948 break;
1949
1950 case SCSI_PROT_NORMAL:
1951 default:
1952 break;
1953 }
1954 }
1955
1956 return ret;
1957}
1958#endif
1959
1960/**
1961 * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data
1962 * @phba: The Hba for which this call is being executed.
1963 * @sc: pointer to scsi command we're working on
1964 * @bpl: pointer to buffer list for protection groups
1965 * @datacnt: number of segments of data that have been dma mapped
1966 *
1967 * This function sets up BPL buffer list for protection groups of
e2a0a9d6
JS		 1968 * type LPFC_PG_TYPE_NO_DIF
1969 *
1970 * This is usually used when the HBA is instructed to generate
1971 * DIFs and insert them into data stream (or strip DIF from
1972 * incoming data stream)
1973 *
1974 * The buffer list consists of just one protection group described
1975 * below:
1976 * +-------------------------+
6c8eea54
JS		 1977 * start of prot group --> | PDE_5 |
1978 * +-------------------------+
1979 * | PDE_6 |
e2a0a9d6
JS		 1980 * +-------------------------+
1981 * | Data BDE |
1982 * +-------------------------+
1983 * |more Data BDE's ... (opt)|
1984 * +-------------------------+
1985 *
e2a0a9d6
JS		 1986 *
1987 * Note: Data s/g buffers have been dma mapped
acd6859b
JS		 1988 *
1989 * Returns the number of BDEs added to the BPL.
1990 **/
e2a0a9d6
JS		 1991static int
1992lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
1993 struct ulp_bde64 *bpl, int datasegcnt)
1994{
1995 struct scatterlist *sgde = NULL; /* s/g data entry */
6c8eea54
JS		 1996 struct lpfc_pde5 *pde5 = NULL;
1997 struct lpfc_pde6 *pde6 = NULL;
e2a0a9d6 1998 dma_addr_t physaddr;
6c8eea54 1999 int i = 0, num_bde = 0, status;
e2a0a9d6 2000 int datadir = sc->sc_data_direction;
0829a19a 2001#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2002 uint32_t rc;
0829a19a 2003#endif
acd6859b 2004 uint32_t checking = 1;
e2a0a9d6 2005 uint32_t reftag;
7c56b9fd 2006 unsigned blksize;
6c8eea54 2007 uint8_t txop, rxop;
e2a0a9d6 2008
6c8eea54
JS		 2009 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2010 if (status)
e2a0a9d6
JS		 2011 goto out;
2012
6c8eea54 2013 /* extract some info from the scsi command for pde*/
e2a0a9d6 2014 blksize = lpfc_cmd_blksize(sc);
acd6859b 2015 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
e2a0a9d6 2016
f9bb2da1 2017#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2018 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2019 if (rc) {
9a6b09c0 2020 if (rc & BG_ERR_SWAP)
acd6859b 2021 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2022 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2023 checking = 0;
2024 }
f9bb2da1
JS		 2025#endif
2026
6c8eea54
JS		 2027 /* setup PDE5 with what we have */
2028 pde5 = (struct lpfc_pde5 *) bpl;
2029 memset(pde5, 0, sizeof(struct lpfc_pde5));
2030 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
6c8eea54 2031
bc73905a 2032 /* Endianness conversion if necessary for PDE5 */
589a52d6 2033 pde5->word0 = cpu_to_le32(pde5->word0);
7c56b9fd 2034 pde5->reftag = cpu_to_le32(reftag);
589a52d6 2035
6c8eea54
JS		 2036 /* advance bpl and increment bde count */
2037 num_bde++;
2038 bpl++;
2039 pde6 = (struct lpfc_pde6 *) bpl;
2040
2041 /* setup PDE6 with the rest of the info */
2042 memset(pde6, 0, sizeof(struct lpfc_pde6));
2043 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2044 bf_set(pde6_optx, pde6, txop);
2045 bf_set(pde6_oprx, pde6, rxop);
a6887e28
JS		 2046
2047 /*
2048 * We only need to check the data on READs, for WRITEs
2049 * protection data is automatically generated, not checked.
2050 */
6c8eea54 2051 if (datadir == DMA_FROM_DEVICE) {
9c6aa9d7 2052 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
a6887e28
JS		 2053 bf_set(pde6_ce, pde6, checking);
2054 else
2055 bf_set(pde6_ce, pde6, 0);
2056
9c6aa9d7 2057 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
a6887e28
JS		 2058 bf_set(pde6_re, pde6, checking);
2059 else
2060 bf_set(pde6_re, pde6, 0);
6c8eea54
JS		 2061 }
2062 bf_set(pde6_ai, pde6, 1);
7c56b9fd
JS		 2063 bf_set(pde6_ae, pde6, 0);
2064 bf_set(pde6_apptagval, pde6, 0);
e2a0a9d6 2065
bc73905a 2066 /* Endianness conversion if necessary for PDE6 */
589a52d6
JS		 2067 pde6->word0 = cpu_to_le32(pde6->word0);
2068 pde6->word1 = cpu_to_le32(pde6->word1);
2069 pde6->word2 = cpu_to_le32(pde6->word2);
2070
6c8eea54 2071 /* advance bpl and increment bde count */
e2a0a9d6
JS		 2072 num_bde++;
2073 bpl++;
2074
2075 /* assumption: caller has already run dma_map_sg on command data */
2076 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2077 physaddr = sg_dma_address(sgde);
2078 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
2079 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
2080 bpl->tus.f.bdeSize = sg_dma_len(sgde);
2081 if (datadir == DMA_TO_DEVICE)
2082 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2083 else
2084 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2085 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2086 bpl++;
2087 num_bde++;
2088 }
2089
2090out:
2091 return num_bde;
2092}
2093
acd6859b
JS		 2094/**
2095 * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data
2096 * @phba: The Hba for which this call is being executed.
2097 * @sc: pointer to scsi command we're working on
2098 * @bpl: pointer to buffer list for protection groups
2099 * @datacnt: number of segments of data that have been dma mapped
2100 * @protcnt: number of segment of protection data that have been dma mapped
2101 *
2102 * This function sets up BPL buffer list for protection groups of
2103 * type LPFC_PG_TYPE_DIF
e2a0a9d6
JS		 2104 *
2105 * This is usually used when DIFs are in their own buffers,
2106 * separate from the data. The HBA can then by instructed
2107 * to place the DIFs in the outgoing stream. For read operations,
2108 * The HBA could extract the DIFs and place it in DIF buffers.
2109 *
2110 * The buffer list for this type consists of one or more of the
2111 * protection groups described below:
2112 * +-------------------------+
6c8eea54 2113 * start of first prot group --> | PDE_5 |
e2a0a9d6 2114 * +-------------------------+
6c8eea54
JS		 2115 * | PDE_6 |
2116 * +-------------------------+
2117 * | PDE_7 (Prot BDE) |
e2a0a9d6
JS		 2118 * +-------------------------+
2119 * | Data BDE |
2120 * +-------------------------+
2121 * |more Data BDE's ... (opt)|
2122 * +-------------------------+
6c8eea54 2123 * start of new prot group --> | PDE_5 |
e2a0a9d6
JS		 2124 * +-------------------------+
2125 * | ... |
2126 * +-------------------------+
2127 *
e2a0a9d6
JS		 2128 * Note: It is assumed that both data and protection s/g buffers have been
2129 * mapped for DMA
acd6859b
JS		 2130 *
2131 * Returns the number of BDEs added to the BPL.
2132 **/
e2a0a9d6
JS		 2133static int
2134lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2135 struct ulp_bde64 *bpl, int datacnt, int protcnt)
2136{
2137 struct scatterlist *sgde = NULL; /* s/g data entry */
2138 struct scatterlist *sgpe = NULL; /* s/g prot entry */
6c8eea54
JS		 2139 struct lpfc_pde5 *pde5 = NULL;
2140 struct lpfc_pde6 *pde6 = NULL;
7f86059a 2141 struct lpfc_pde7 *pde7 = NULL;
e2a0a9d6
JS		 2142 dma_addr_t dataphysaddr, protphysaddr;
2143 unsigned short curr_data = 0, curr_prot = 0;
7f86059a
JS		 2144 unsigned int split_offset;
2145 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
e2a0a9d6
JS		 2146 unsigned int protgrp_blks, protgrp_bytes;
2147 unsigned int remainder, subtotal;
6c8eea54 2148 int status;
e2a0a9d6
JS		 2149 int datadir = sc->sc_data_direction;
2150 unsigned char pgdone = 0, alldone = 0;
2151 unsigned blksize;
0829a19a 2152#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2153 uint32_t rc;
0829a19a 2154#endif
acd6859b 2155 uint32_t checking = 1;
e2a0a9d6 2156 uint32_t reftag;
6c8eea54 2157 uint8_t txop, rxop;
e2a0a9d6
JS		 2158 int num_bde = 0;
2159
2160 sgpe = scsi_prot_sglist(sc);
2161 sgde = scsi_sglist(sc);
2162
2163 if (!sgpe || !sgde) {
2164 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
acd6859b
JS		 2165 "9020 Invalid s/g entry: data=0x%p prot=0x%p\n",
2166 sgpe, sgde);
2167 return 0;
2168 }
2169
2170 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2171 if (status)
2172 goto out;
2173
2174 /* extract some info from the scsi command */
2175 blksize = lpfc_cmd_blksize(sc);
2176 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2177
2178#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2179 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2180 if (rc) {
9a6b09c0 2181 if (rc & BG_ERR_SWAP)
acd6859b 2182 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2183 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2184 checking = 0;
2185 }
2186#endif
2187
2188 split_offset = 0;
2189 do {
96f7077f
JS		 2190 /* Check to see if we ran out of space */
2191 if (num_bde >= (phba->cfg_total_seg_cnt - 2))
2192 return num_bde + 3;
2193
acd6859b
JS		 2194 /* setup PDE5 with what we have */
2195 pde5 = (struct lpfc_pde5 *) bpl;
2196 memset(pde5, 0, sizeof(struct lpfc_pde5));
2197 bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR);
2198
2199 /* Endianness conversion if necessary for PDE5 */
2200 pde5->word0 = cpu_to_le32(pde5->word0);
2201 pde5->reftag = cpu_to_le32(reftag);
2202
2203 /* advance bpl and increment bde count */
2204 num_bde++;
2205 bpl++;
2206 pde6 = (struct lpfc_pde6 *) bpl;
2207
2208 /* setup PDE6 with the rest of the info */
2209 memset(pde6, 0, sizeof(struct lpfc_pde6));
2210 bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR);
2211 bf_set(pde6_optx, pde6, txop);
2212 bf_set(pde6_oprx, pde6, rxop);
a6887e28 2213
9c6aa9d7 2214 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
a6887e28
JS		 2215 bf_set(pde6_ce, pde6, checking);
2216 else
2217 bf_set(pde6_ce, pde6, 0);
2218
9c6aa9d7 2219 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
a6887e28
JS		 2220 bf_set(pde6_re, pde6, checking);
2221 else
2222 bf_set(pde6_re, pde6, 0);
2223
acd6859b
JS		 2224 bf_set(pde6_ai, pde6, 1);
2225 bf_set(pde6_ae, pde6, 0);
2226 bf_set(pde6_apptagval, pde6, 0);
2227
2228 /* Endianness conversion if necessary for PDE6 */
2229 pde6->word0 = cpu_to_le32(pde6->word0);
2230 pde6->word1 = cpu_to_le32(pde6->word1);
2231 pde6->word2 = cpu_to_le32(pde6->word2);
2232
2233 /* advance bpl and increment bde count */
2234 num_bde++;
2235 bpl++;
2236
2237 /* setup the first BDE that points to protection buffer */
2238 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2239 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
2240
2241 /* must be integer multiple of the DIF block length */
2242 BUG_ON(protgroup_len % 8);
2243
2244 pde7 = (struct lpfc_pde7 *) bpl;
2245 memset(pde7, 0, sizeof(struct lpfc_pde7));
2246 bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR);
2247
2248 pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr));
2249 pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr));
2250
2251 protgrp_blks = protgroup_len / 8;
2252 protgrp_bytes = protgrp_blks * blksize;
2253
2254 /* check if this pde is crossing the 4K boundary; if so split */
2255 if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) {
2256 protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff);
2257 protgroup_offset += protgroup_remainder;
2258 protgrp_blks = protgroup_remainder / 8;
2259 protgrp_bytes = protgrp_blks * blksize;
2260 } else {
2261 protgroup_offset = 0;
2262 curr_prot++;
2263 }
2264
2265 num_bde++;
2266
2267 /* setup BDE's for data blocks associated with DIF data */
2268 pgdone = 0;
2269 subtotal = 0; /* total bytes processed for current prot grp */
2270 while (!pgdone) {
96f7077f
JS		 2271 /* Check to see if we ran out of space */
2272 if (num_bde >= phba->cfg_total_seg_cnt)
2273 return num_bde + 1;
2274
acd6859b
JS		 2275 if (!sgde) {
2276 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2277 "9065 BLKGRD:%s Invalid data segment\n",
2278 __func__);
2279 return 0;
2280 }
2281 bpl++;
2282 dataphysaddr = sg_dma_address(sgde) + split_offset;
2283 bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr));
2284 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr));
2285
2286 remainder = sg_dma_len(sgde) - split_offset;
2287
2288 if ((subtotal + remainder) <= protgrp_bytes) {
2289 /* we can use this whole buffer */
2290 bpl->tus.f.bdeSize = remainder;
2291 split_offset = 0;
2292
2293 if ((subtotal + remainder) == protgrp_bytes)
2294 pgdone = 1;
2295 } else {
2296 /* must split this buffer with next prot grp */
2297 bpl->tus.f.bdeSize = protgrp_bytes - subtotal;
2298 split_offset += bpl->tus.f.bdeSize;
2299 }
2300
2301 subtotal += bpl->tus.f.bdeSize;
2302
2303 if (datadir == DMA_TO_DEVICE)
2304 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2305 else
2306 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2307 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2308
2309 num_bde++;
2310 curr_data++;
2311
2312 if (split_offset)
2313 break;
2314
2315 /* Move to the next s/g segment if possible */
2316 sgde = sg_next(sgde);
2317
2318 }
2319
2320 if (protgroup_offset) {
2321 /* update the reference tag */
2322 reftag += protgrp_blks;
2323 bpl++;
2324 continue;
2325 }
2326
2327 /* are we done ? */
2328 if (curr_prot == protcnt) {
2329 alldone = 1;
2330 } else if (curr_prot < protcnt) {
2331 /* advance to next prot buffer */
2332 sgpe = sg_next(sgpe);
2333 bpl++;
2334
2335 /* update the reference tag */
2336 reftag += protgrp_blks;
2337 } else {
2338 /* if we're here, we have a bug */
2339 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
2340 "9054 BLKGRD: bug in %s\n", __func__);
2341 }
2342
2343 } while (!alldone);
2344out:
2345
2346 return num_bde;
2347}
2348
2349/**
2350 * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data
2351 * @phba: The Hba for which this call is being executed.
2352 * @sc: pointer to scsi command we're working on
2353 * @sgl: pointer to buffer list for protection groups
2354 * @datacnt: number of segments of data that have been dma mapped
2355 *
2356 * This function sets up SGL buffer list for protection groups of
2357 * type LPFC_PG_TYPE_NO_DIF
2358 *
2359 * This is usually used when the HBA is instructed to generate
2360 * DIFs and insert them into data stream (or strip DIF from
2361 * incoming data stream)
2362 *
2363 * The buffer list consists of just one protection group described
2364 * below:
2365 * +-------------------------+
2366 * start of prot group --> | DI_SEED |
2367 * +-------------------------+
2368 * | Data SGE |
2369 * +-------------------------+
2370 * |more Data SGE's ... (opt)|
2371 * +-------------------------+
2372 *
2373 *
2374 * Note: Data s/g buffers have been dma mapped
2375 *
2376 * Returns the number of SGEs added to the SGL.
2377 **/
2378static int
2379lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2380 struct sli4_sge *sgl, int datasegcnt)
2381{
2382 struct scatterlist *sgde = NULL; /* s/g data entry */
2383 struct sli4_sge_diseed *diseed = NULL;
2384 dma_addr_t physaddr;
2385 int i = 0, num_sge = 0, status;
acd6859b
JS		 2386 uint32_t reftag;
2387 unsigned blksize;
2388 uint8_t txop, rxop;
0829a19a 2389#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2390 uint32_t rc;
0829a19a 2391#endif
acd6859b
JS		 2392 uint32_t checking = 1;
2393 uint32_t dma_len;
2394 uint32_t dma_offset = 0;
2395
2396 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2397 if (status)
2398 goto out;
2399
2400 /* extract some info from the scsi command for pde*/
2401 blksize = lpfc_cmd_blksize(sc);
2402 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
2403
2404#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2405 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2406 if (rc) {
9a6b09c0 2407 if (rc & BG_ERR_SWAP)
acd6859b 2408 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2409 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2410 checking = 0;
2411 }
2412#endif
2413
2414 /* setup DISEED with what we have */
2415 diseed = (struct sli4_sge_diseed *) sgl;
2416 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2417 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2418
2419 /* Endianness conversion if necessary */
2420 diseed->ref_tag = cpu_to_le32(reftag);
2421 diseed->ref_tag_tran = diseed->ref_tag;
2422
a6887e28
JS		 2423 /*
2424 * We only need to check the data on READs, for WRITEs
2425 * protection data is automatically generated, not checked.
2426 */
2427 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
9c6aa9d7 2428 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD))
a6887e28
JS		 2429 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2430 else
2431 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2432
9c6aa9d7 2433 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
a6887e28
JS		 2434 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2435 else
2436 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2437 }
2438
acd6859b
JS		 2439 /* setup DISEED with the rest of the info */
2440 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2441 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
a6887e28 2442
acd6859b
JS		 2443 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2444 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2445
2446 /* Endianness conversion if necessary for DISEED */
2447 diseed->word2 = cpu_to_le32(diseed->word2);
2448 diseed->word3 = cpu_to_le32(diseed->word3);
2449
2450 /* advance bpl and increment sge count */
2451 num_sge++;
2452 sgl++;
2453
2454 /* assumption: caller has already run dma_map_sg on command data */
2455 scsi_for_each_sg(sc, sgde, datasegcnt, i) {
2456 physaddr = sg_dma_address(sgde);
2457 dma_len = sg_dma_len(sgde);
2458 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
2459 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
2460 if ((i + 1) == datasegcnt)
2461 bf_set(lpfc_sli4_sge_last, sgl, 1);
2462 else
2463 bf_set(lpfc_sli4_sge_last, sgl, 0);
2464 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2465 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
2466
2467 sgl->sge_len = cpu_to_le32(dma_len);
2468 dma_offset += dma_len;
2469
2470 sgl++;
2471 num_sge++;
2472 }
2473
2474out:
2475 return num_sge;
2476}
2477
2478/**
2479 * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data
2480 * @phba: The Hba for which this call is being executed.
2481 * @sc: pointer to scsi command we're working on
2482 * @sgl: pointer to buffer list for protection groups
2483 * @datacnt: number of segments of data that have been dma mapped
2484 * @protcnt: number of segment of protection data that have been dma mapped
2485 *
2486 * This function sets up SGL buffer list for protection groups of
2487 * type LPFC_PG_TYPE_DIF
2488 *
2489 * This is usually used when DIFs are in their own buffers,
2490 * separate from the data. The HBA can then by instructed
2491 * to place the DIFs in the outgoing stream. For read operations,
2492 * The HBA could extract the DIFs and place it in DIF buffers.
2493 *
2494 * The buffer list for this type consists of one or more of the
2495 * protection groups described below:
2496 * +-------------------------+
2497 * start of first prot group --> | DISEED |
2498 * +-------------------------+
2499 * | DIF (Prot SGE) |
2500 * +-------------------------+
2501 * | Data SGE |
2502 * +-------------------------+
2503 * |more Data SGE's ... (opt)|
2504 * +-------------------------+
2505 * start of new prot group --> | DISEED |
2506 * +-------------------------+
2507 * | ... |
2508 * +-------------------------+
2509 *
2510 * Note: It is assumed that both data and protection s/g buffers have been
2511 * mapped for DMA
2512 *
2513 * Returns the number of SGEs added to the SGL.
2514 **/
2515static int
2516lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc,
2517 struct sli4_sge *sgl, int datacnt, int protcnt)
2518{
2519 struct scatterlist *sgde = NULL; /* s/g data entry */
2520 struct scatterlist *sgpe = NULL; /* s/g prot entry */
2521 struct sli4_sge_diseed *diseed = NULL;
2522 dma_addr_t dataphysaddr, protphysaddr;
2523 unsigned short curr_data = 0, curr_prot = 0;
2524 unsigned int split_offset;
2525 unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder;
2526 unsigned int protgrp_blks, protgrp_bytes;
2527 unsigned int remainder, subtotal;
2528 int status;
2529 unsigned char pgdone = 0, alldone = 0;
2530 unsigned blksize;
2531 uint32_t reftag;
2532 uint8_t txop, rxop;
2533 uint32_t dma_len;
0829a19a 2534#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
acd6859b 2535 uint32_t rc;
0829a19a 2536#endif
acd6859b
JS		 2537 uint32_t checking = 1;
2538 uint32_t dma_offset = 0;
2539 int num_sge = 0;
2540
2541 sgpe = scsi_prot_sglist(sc);
2542 sgde = scsi_sglist(sc);
2543
2544 if (!sgpe || !sgde) {
2545 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2546 "9082 Invalid s/g entry: data=0x%p prot=0x%p\n",
e2a0a9d6
JS		 2547 sgpe, sgde);
2548 return 0;
2549 }
2550
6c8eea54
JS		 2551 status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop);
2552 if (status)
e2a0a9d6
JS		 2553 goto out;
2554
6c8eea54 2555 /* extract some info from the scsi command */
e2a0a9d6 2556 blksize = lpfc_cmd_blksize(sc);
acd6859b 2557 reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */
e2a0a9d6 2558
f9bb2da1 2559#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4ac9b226 2560 rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1);
acd6859b 2561 if (rc) {
9a6b09c0 2562 if (rc & BG_ERR_SWAP)
acd6859b 2563 lpfc_bg_err_opcodes(phba, sc, &txop, &rxop);
9a6b09c0 2564 if (rc & BG_ERR_CHECK)
acd6859b
JS		 2565 checking = 0;
2566 }
f9bb2da1
JS		 2567#endif
2568
e2a0a9d6
JS		 2569 split_offset = 0;
2570 do {
96f7077f
JS		 2571 /* Check to see if we ran out of space */
2572 if (num_sge >= (phba->cfg_total_seg_cnt - 2))
2573 return num_sge + 3;
2574
acd6859b
JS		 2575 /* setup DISEED with what we have */
2576 diseed = (struct sli4_sge_diseed *) sgl;
2577 memset(diseed, 0, sizeof(struct sli4_sge_diseed));
2578 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED);
2579
2580 /* Endianness conversion if necessary */
2581 diseed->ref_tag = cpu_to_le32(reftag);
2582 diseed->ref_tag_tran = diseed->ref_tag;
2583
9c6aa9d7 2584 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) {
a6887e28
JS		 2585 bf_set(lpfc_sli4_sge_dif_ce, diseed, checking);
2586
2587 } else {
2588 bf_set(lpfc_sli4_sge_dif_ce, diseed, 0);
2589 /*
2590 * When in this mode, the hardware will replace
2591 * the guard tag from the host with a
2592 * newly generated good CRC for the wire.
2593 * Switch to raw mode here to avoid this
2594 * behavior. What the host sends gets put on the wire.
2595 */
2596 if (txop == BG_OP_IN_CRC_OUT_CRC) {
2597 txop = BG_OP_RAW_MODE;
2598 rxop = BG_OP_RAW_MODE;
2599 }
2600 }
2601
2602
9c6aa9d7 2603 if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF))
a6887e28
JS		 2604 bf_set(lpfc_sli4_sge_dif_re, diseed, checking);
2605 else
2606 bf_set(lpfc_sli4_sge_dif_re, diseed, 0);
2607
acd6859b
JS		 2608 /* setup DISEED with the rest of the info */
2609 bf_set(lpfc_sli4_sge_dif_optx, diseed, txop);
2610 bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop);
a6887e28 2611
acd6859b
JS		 2612 bf_set(lpfc_sli4_sge_dif_ai, diseed, 1);
2613 bf_set(lpfc_sli4_sge_dif_me, diseed, 0);
2614
2615 /* Endianness conversion if necessary for DISEED */
2616 diseed->word2 = cpu_to_le32(diseed->word2);
2617 diseed->word3 = cpu_to_le32(diseed->word3);
2618
2619 /* advance sgl and increment bde count */
2620 num_sge++;
2621 sgl++;
e2a0a9d6
JS		 2622
2623 /* setup the first BDE that points to protection buffer */
7f86059a
JS		 2624 protphysaddr = sg_dma_address(sgpe) + protgroup_offset;
2625 protgroup_len = sg_dma_len(sgpe) - protgroup_offset;
e2a0a9d6 2626
e2a0a9d6
JS		 2627 /* must be integer multiple of the DIF block length */
2628 BUG_ON(protgroup_len % 8);
2629
acd6859b
JS		 2630 /* Now setup DIF SGE */
2631 sgl->word2 = 0;
2632 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF);
2633 sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr));
2634 sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr));
2635 sgl->word2 = cpu_to_le32(sgl->word2);
7f86059a 2636
e2a0a9d6
JS		 2637 protgrp_blks = protgroup_len / 8;
2638 protgrp_bytes = protgrp_blks * blksize;
2639
acd6859b
JS		 2640 /* check if DIF SGE is crossing the 4K boundary; if so split */
2641 if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) {
2642 protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff);
7f86059a
JS		 2643 protgroup_offset += protgroup_remainder;
2644 protgrp_blks = protgroup_remainder / 8;
7c56b9fd 2645 protgrp_bytes = protgrp_blks * blksize;
7f86059a
JS		 2646 } else {
2647 protgroup_offset = 0;
2648 curr_prot++;
2649 }
e2a0a9d6 2650
acd6859b 2651 num_sge++;
e2a0a9d6 2652
acd6859b 2653 /* setup SGE's for data blocks associated with DIF data */
e2a0a9d6
JS		 2654 pgdone = 0;
2655 subtotal = 0; /* total bytes processed for current prot grp */
2656 while (!pgdone) {
96f7077f
JS		 2657 /* Check to see if we ran out of space */
2658 if (num_sge >= phba->cfg_total_seg_cnt)
2659 return num_sge + 1;
2660
e2a0a9d6 2661 if (!sgde) {
6a9c52cf 2662 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 2663 "9086 BLKGRD:%s Invalid data segment\n",
e2a0a9d6
JS		 2664 __func__);
2665 return 0;
2666 }
acd6859b 2667 sgl++;
e2a0a9d6 2668 dataphysaddr = sg_dma_address(sgde) + split_offset;
e2a0a9d6
JS		 2669
2670 remainder = sg_dma_len(sgde) - split_offset;
2671
2672 if ((subtotal + remainder) <= protgrp_bytes) {
2673 /* we can use this whole buffer */
acd6859b 2674 dma_len = remainder;
e2a0a9d6
JS		 2675 split_offset = 0;
2676
2677 if ((subtotal + remainder) == protgrp_bytes)
2678 pgdone = 1;
2679 } else {
2680 /* must split this buffer with next prot grp */
acd6859b
JS		 2681 dma_len = protgrp_bytes - subtotal;
2682 split_offset += dma_len;
e2a0a9d6
JS		 2683 }
2684
acd6859b 2685 subtotal += dma_len;
e2a0a9d6 2686
acd6859b
JS		 2687 sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr));
2688 sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr));
2689 bf_set(lpfc_sli4_sge_last, sgl, 0);
2690 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
2691 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
e2a0a9d6 2692
acd6859b
JS		 2693 sgl->sge_len = cpu_to_le32(dma_len);
2694 dma_offset += dma_len;
2695
2696 num_sge++;
e2a0a9d6
JS		 2697 curr_data++;
2698
2699 if (split_offset)
2700 break;
2701
2702 /* Move to the next s/g segment if possible */
2703 sgde = sg_next(sgde);
2704 }
2705
7f86059a
JS		 2706 if (protgroup_offset) {
2707 /* update the reference tag */
2708 reftag += protgrp_blks;
acd6859b 2709 sgl++;
7f86059a
JS		 2710 continue;
2711 }
2712
e2a0a9d6
JS		 2713 /* are we done ? */
2714 if (curr_prot == protcnt) {
acd6859b 2715 bf_set(lpfc_sli4_sge_last, sgl, 1);
e2a0a9d6
JS		 2716 alldone = 1;
2717 } else if (curr_prot < protcnt) {
2718 /* advance to next prot buffer */
2719 sgpe = sg_next(sgpe);
acd6859b 2720 sgl++;
e2a0a9d6
JS		 2721
2722 /* update the reference tag */
2723 reftag += protgrp_blks;
2724 } else {
2725 /* if we're here, we have a bug */
6a9c52cf 2726 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
acd6859b 2727 "9085 BLKGRD: bug in %s\n", __func__);
e2a0a9d6
JS		 2728 }
2729
2730 } while (!alldone);
acd6859b 2731
e2a0a9d6
JS		 2732out:
2733
acd6859b 2734 return num_sge;
e2a0a9d6 2735}
7f86059a 2736
acd6859b
JS		 2737/**
2738 * lpfc_prot_group_type - Get prtotection group type of SCSI command
2739 * @phba: The Hba for which this call is being executed.
2740 * @sc: pointer to scsi command we're working on
2741 *
e2a0a9d6
JS		 2742 * Given a SCSI command that supports DIF, determine composition of protection
2743 * groups involved in setting up buffer lists
2744 *
acd6859b
JS		 2745 * Returns: Protection group type (with or without DIF)
2746 *
2747 **/
e2a0a9d6
JS		 2748static int
2749lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc)
2750{
2751 int ret = LPFC_PG_TYPE_INVALID;
2752 unsigned char op = scsi_get_prot_op(sc);
2753
2754 switch (op) {
2755 case SCSI_PROT_READ_STRIP:
2756 case SCSI_PROT_WRITE_INSERT:
2757 ret = LPFC_PG_TYPE_NO_DIF;
2758 break;
2759 case SCSI_PROT_READ_INSERT:
2760 case SCSI_PROT_WRITE_STRIP:
2761 case SCSI_PROT_READ_PASS:
2762 case SCSI_PROT_WRITE_PASS:
e2a0a9d6
JS		 2763 ret = LPFC_PG_TYPE_DIF_BUF;
2764 break;
2765 default:
9c6aa9d7
JS		 2766 if (phba)
2767 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2768 "9021 Unsupported protection op:%d\n",
2769 op);
e2a0a9d6
JS		 2770 break;
2771 }
e2a0a9d6
JS		 2772 return ret;
2773}
2774
a6887e28
JS		 2775/**
2776 * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard
2777 * @phba: The Hba for which this call is being executed.
2778 * @lpfc_cmd: The scsi buffer which is going to be adjusted.
2779 *
2780 * Adjust the data length to account for how much data
2781 * is actually on the wire.
2782 *
2783 * returns the adjusted data length
2784 **/
2785static int
2786lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba,
2787 struct lpfc_scsi_buf *lpfc_cmd)
2788{
2789 struct scsi_cmnd *sc = lpfc_cmd->pCmd;
2790 int fcpdl;
2791
2792 fcpdl = scsi_bufflen(sc);
2793
2794 /* Check if there is protection data on the wire */
2795 if (sc->sc_data_direction == DMA_FROM_DEVICE) {
9c6aa9d7 2796 /* Read check for protection data */
a6887e28
JS		 2797 if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT)
2798 return fcpdl;
2799
2800 } else {
9c6aa9d7 2801 /* Write check for protection data */
a6887e28
JS		 2802 if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP)
2803 return fcpdl;
2804 }
2805
2806 /*
2807 * If we are in DIF Type 1 mode every data block has a 8 byte
9c6aa9d7
JS		 2808 * DIF (trailer) attached to it. Must ajust FCP data length
2809 * to account for the protection data.
a6887e28 2810 */
9c6aa9d7 2811 fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8;
a6887e28
JS		 2812
2813 return fcpdl;
2814}
2815
acd6859b
JS		 2816/**
2817 * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec
2818 * @phba: The Hba for which this call is being executed.
2819 * @lpfc_cmd: The scsi buffer which is going to be prep'ed.
2820 *
e2a0a9d6
JS		 2821 * This is the protection/DIF aware version of
2822 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
2823 * two functions eventually, but for now, it's here
acd6859b 2824 **/
e2a0a9d6 2825static int
acd6859b 2826lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba,
e2a0a9d6
JS		 2827 struct lpfc_scsi_buf *lpfc_cmd)
2828{
2829 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
2830 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
2831 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
2832 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
2833 uint32_t num_bde = 0;
2834 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
2835 int prot_group_type = 0;
a6887e28 2836 int fcpdl;
e2a0a9d6
JS		 2837
2838 /*
2839 * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd
2840 * fcp_rsp regions to the first data bde entry
2841 */
2842 bpl += 2;
2843 if (scsi_sg_count(scsi_cmnd)) {
2844 /*
2845 * The driver stores the segment count returned from pci_map_sg
2846 * because this a count of dma-mappings used to map the use_sg
2847 * pages. They are not guaranteed to be the same for those
2848 * architectures that implement an IOMMU.
2849 */
2850 datasegcnt = dma_map_sg(&phba->pcidev->dev,
2851 scsi_sglist(scsi_cmnd),
2852 scsi_sg_count(scsi_cmnd), datadir);
2853 if (unlikely(!datasegcnt))
2854 return 1;
2855
2856 lpfc_cmd->seg_cnt = datasegcnt;
96f7077f
JS		 2857
2858 /* First check if data segment count from SCSI Layer is good */
2859 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
2860 goto err;
e2a0a9d6
JS		 2861
2862 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
2863
2864 switch (prot_group_type) {
2865 case LPFC_PG_TYPE_NO_DIF:
96f7077f
JS		 2866
2867 /* Here we need to add a PDE5 and PDE6 to the count */
2868 if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt)
2869 goto err;
2870
e2a0a9d6
JS		 2871 num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl,
2872 datasegcnt);
c9404c9c 2873 /* we should have 2 or more entries in buffer list */
e2a0a9d6
JS		 2874 if (num_bde < 2)
2875 goto err;
2876 break;
96f7077f
JS		 2877
2878 case LPFC_PG_TYPE_DIF_BUF:
e2a0a9d6
JS		 2879 /*
2880 * This type indicates that protection buffers are
2881 * passed to the driver, so that needs to be prepared
2882 * for DMA
2883 */
2884 protsegcnt = dma_map_sg(&phba->pcidev->dev,
2885 scsi_prot_sglist(scsi_cmnd),
2886 scsi_prot_sg_count(scsi_cmnd), datadir);
2887 if (unlikely(!protsegcnt)) {
2888 scsi_dma_unmap(scsi_cmnd);
2889 return 1;
2890 }
2891
2892 lpfc_cmd->prot_seg_cnt = protsegcnt;
96f7077f
JS		 2893
2894 /*
2895 * There is a minimun of 4 BPLs used for every
2896 * protection data segment.
2897 */
2898 if ((lpfc_cmd->prot_seg_cnt * 4) >
2899 (phba->cfg_total_seg_cnt - 2))
2900 goto err;
e2a0a9d6
JS		 2901
2902 num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl,
2903 datasegcnt, protsegcnt);
c9404c9c 2904 /* we should have 3 or more entries in buffer list */
96f7077f
JS		 2905 if ((num_bde < 3) ||
2906 (num_bde > phba->cfg_total_seg_cnt))
e2a0a9d6
JS		 2907 goto err;
2908 break;
96f7077f 2909
e2a0a9d6
JS		 2910 case LPFC_PG_TYPE_INVALID:
2911 default:
96f7077f
JS		 2912 scsi_dma_unmap(scsi_cmnd);
2913 lpfc_cmd->seg_cnt = 0;
2914
e2a0a9d6
JS		 2915 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
2916 "9022 Unexpected protection group %i\n",
2917 prot_group_type);
2918 return 1;
2919 }
2920 }
2921
2922 /*
2923 * Finish initializing those IOCB fields that are dependent on the
2924 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
2925 * reinitialized since all iocb memory resources are used many times
2926 * for transmit, receive, and continuation bpl's.
2927 */
2928 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64));
2929 iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64));
2930 iocb_cmd->ulpBdeCount = 1;
2931 iocb_cmd->ulpLe = 1;
2932
a6887e28 2933 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
e2a0a9d6
JS		 2934 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
2935
2936 /*
2937 * Due to difference in data length between DIF/non-DIF paths,
2938 * we need to set word 4 of IOCB here
2939 */
2940 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
2941
dea3101e 2942 return 0;
e2a0a9d6 2943err:
96f7077f
JS		 2944 if (lpfc_cmd->seg_cnt)
2945 scsi_dma_unmap(scsi_cmnd);
2946 if (lpfc_cmd->prot_seg_cnt)
2947 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
2948 scsi_prot_sg_count(scsi_cmnd),
2949 scsi_cmnd->sc_data_direction);
2950
e2a0a9d6 2951 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
96f7077f
JS		 2952 "9023 Cannot setup S/G List for HBA"
2953 "IO segs %d/%d BPL %d SCSI %d: %d %d\n",
2954 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
2955 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
e2a0a9d6 2956 prot_group_type, num_bde);
96f7077f
JS		 2957
2958 lpfc_cmd->seg_cnt = 0;
2959 lpfc_cmd->prot_seg_cnt = 0;
e2a0a9d6
JS		 2960 return 1;
2961}
2962
737d4248
JS		 2963/*
2964 * This function calcuates the T10 DIF guard tag
2965 * on the specified data using a CRC algorithmn
2966 * using crc_t10dif.
2967 */
2968uint16_t
2969lpfc_bg_crc(uint8_t *data, int count)
2970{
2971 uint16_t crc = 0;
2972 uint16_t x;
2973
2974 crc = crc_t10dif(data, count);
2975 x = cpu_to_be16(crc);
2976 return x;
2977}
2978
2979/*
2980 * This function calcuates the T10 DIF guard tag
2981 * on the specified data using a CSUM algorithmn
2982 * using ip_compute_csum.
2983 */
2984uint16_t
2985lpfc_bg_csum(uint8_t *data, int count)
2986{
2987 uint16_t ret;
2988
2989 ret = ip_compute_csum(data, count);
2990 return ret;
2991}
2992
2993/*
2994 * This function examines the protection data to try to determine
2995 * what type of T10-DIF error occurred.
2996 */
2997void
2998lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
2999{
3000 struct scatterlist *sgpe; /* s/g prot entry */
3001 struct scatterlist *sgde; /* s/g data entry */
3002 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3003 struct scsi_dif_tuple *src = NULL;
3004 uint8_t *data_src = NULL;
3005 uint16_t guard_tag, guard_type;
3006 uint16_t start_app_tag, app_tag;
3007 uint32_t start_ref_tag, ref_tag;
3008 int prot, protsegcnt;
3009 int err_type, len, data_len;
3010 int chk_ref, chk_app, chk_guard;
3011 uint16_t sum;
3012 unsigned blksize;
3013
3014 err_type = BGS_GUARD_ERR_MASK;
3015 sum = 0;
3016 guard_tag = 0;
3017
3018 /* First check to see if there is protection data to examine */
3019 prot = scsi_get_prot_op(cmd);
3020 if ((prot == SCSI_PROT_READ_STRIP) ||
3021 (prot == SCSI_PROT_WRITE_INSERT) ||
3022 (prot == SCSI_PROT_NORMAL))
3023 goto out;
3024
3025 /* Currently the driver just supports ref_tag and guard_tag checking */
3026 chk_ref = 1;
3027 chk_app = 0;
3028 chk_guard = 0;
3029
3030 /* Setup a ptr to the protection data provided by the SCSI host */
3031 sgpe = scsi_prot_sglist(cmd);
3032 protsegcnt = lpfc_cmd->prot_seg_cnt;
3033
3034 if (sgpe && protsegcnt) {
3035
3036 /*
3037 * We will only try to verify guard tag if the segment
3038 * data length is a multiple of the blksize.
3039 */
3040 sgde = scsi_sglist(cmd);
3041 blksize = lpfc_cmd_blksize(cmd);
3042 data_src = (uint8_t *)sg_virt(sgde);
3043 data_len = sgde->length;
3044 if ((data_len & (blksize - 1)) == 0)
3045 chk_guard = 1;
3046 guard_type = scsi_host_get_guard(cmd->device->host);
3047
e85d8f9f 3048 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
a6887e28 3049 start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */
737d4248 3050 start_app_tag = src->app_tag;
737d4248
JS		 3051 len = sgpe->length;
3052 while (src && protsegcnt) {
3053 while (len) {
3054
3055 /*
3056 * First check to see if a protection data
3057 * check is valid
3058 */
3059 if ((src->ref_tag == 0xffffffff) ||
3060 (src->app_tag == 0xffff)) {
3061 start_ref_tag++;
3062 goto skipit;
3063 }
3064
9c6aa9d7 3065 /* First Guard Tag checking */
737d4248
JS		 3066 if (chk_guard) {
3067 guard_tag = src->guard_tag;
9c6aa9d7 3068 if (lpfc_cmd_guard_csum(cmd))
737d4248
JS		 3069 sum = lpfc_bg_csum(data_src,
3070 blksize);
3071 else
3072 sum = lpfc_bg_crc(data_src,
3073 blksize);
3074 if ((guard_tag != sum)) {
3075 err_type = BGS_GUARD_ERR_MASK;
3076 goto out;
3077 }
3078 }
9c6aa9d7
JS		 3079
3080 /* Reference Tag checking */
3081 ref_tag = be32_to_cpu(src->ref_tag);
3082 if (chk_ref && (ref_tag != start_ref_tag)) {
3083 err_type = BGS_REFTAG_ERR_MASK;
3084 goto out;
3085 }
3086 start_ref_tag++;
3087
3088 /* App Tag checking */
3089 app_tag = src->app_tag;
3090 if (chk_app && (app_tag != start_app_tag)) {
3091 err_type = BGS_APPTAG_ERR_MASK;
3092 goto out;
3093 }
737d4248
JS		 3094skipit:
3095 len -= sizeof(struct scsi_dif_tuple);
3096 if (len < 0)
3097 len = 0;
3098 src++;
3099
3100 data_src += blksize;
3101 data_len -= blksize;
3102
3103 /*
3104 * Are we at the end of the Data segment?
3105 * The data segment is only used for Guard
3106 * tag checking.
3107 */
3108 if (chk_guard && (data_len == 0)) {
3109 chk_guard = 0;
3110 sgde = sg_next(sgde);
3111 if (!sgde)
3112 goto out;
3113
3114 data_src = (uint8_t *)sg_virt(sgde);
3115 data_len = sgde->length;
3116 if ((data_len & (blksize - 1)) == 0)
3117 chk_guard = 1;
3118 }
3119 }
3120
3121 /* Goto the next Protection data segment */
3122 sgpe = sg_next(sgpe);
3123 if (sgpe) {
3124 src = (struct scsi_dif_tuple *)sg_virt(sgpe);
3125 len = sgpe->length;
3126 } else {
3127 src = NULL;
3128 }
3129 protsegcnt--;
3130 }
3131 }
3132out:
3133 if (err_type == BGS_GUARD_ERR_MASK) {
3134 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3135 0x10, 0x1);
3136 cmd->result = DRIVER_SENSE << 24
3137 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3138 phba->bg_guard_err_cnt++;
3139 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3140 "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n",
3141 (unsigned long)scsi_get_lba(cmd),
3142 sum, guard_tag);
3143
3144 } else if (err_type == BGS_REFTAG_ERR_MASK) {
3145 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3146 0x10, 0x3);
3147 cmd->result = DRIVER_SENSE << 24
3148 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3149
3150 phba->bg_reftag_err_cnt++;
3151 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3152 "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n",
3153 (unsigned long)scsi_get_lba(cmd),
3154 ref_tag, start_ref_tag);
3155
3156 } else if (err_type == BGS_APPTAG_ERR_MASK) {
3157 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3158 0x10, 0x2);
3159 cmd->result = DRIVER_SENSE << 24
3160 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3161
3162 phba->bg_apptag_err_cnt++;
3163 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3164 "9041 BLKGRD: LBA %lx app_tag error %x != %x\n",
3165 (unsigned long)scsi_get_lba(cmd),
3166 app_tag, start_app_tag);
3167 }
3168}
3169
3170
e2a0a9d6
JS		 3171/*
3172 * This function checks for BlockGuard errors detected by
3173 * the HBA. In case of errors, the ASC/ASCQ fields in the
3174 * sense buffer will be set accordingly, paired with
3175 * ILLEGAL_REQUEST to signal to the kernel that the HBA
3176 * detected corruption.
3177 *
3178 * Returns:
3179 * 0 - No error found
3180 * 1 - BlockGuard error found
3181 * -1 - Internal error (bad profile, ...etc)
3182 */
3183static int
3184lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd,
3185 struct lpfc_iocbq *pIocbOut)
3186{
3187 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
3188 struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg;
3189 int ret = 0;
3190 uint32_t bghm = bgf->bghm;
3191 uint32_t bgstat = bgf->bgstat;
3192 uint64_t failing_sector = 0;
3193
e2a0a9d6
JS		 3194 spin_lock(&_dump_buf_lock);
3195 if (!_dump_buf_done) {
6a9c52cf
JS		 3196 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving"
3197 " Data for %u blocks to debugfs\n",
e2a0a9d6 3198 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
6a9c52cf 3199 lpfc_debug_save_data(phba, cmd);
e2a0a9d6
JS		 3200
3201 /* If we have a prot sgl, save the DIF buffer */
3202 if (lpfc_prot_group_type(phba, cmd) ==
3203 LPFC_PG_TYPE_DIF_BUF) {
6a9c52cf
JS		 3204 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: "
3205 "Saving DIF for %u blocks to debugfs\n",
3206 (cmd->cmnd[7] << 8 | cmd->cmnd[8]));
3207 lpfc_debug_save_dif(phba, cmd);
e2a0a9d6
JS		 3208 }
3209
3210 _dump_buf_done = 1;
3211 }
3212 spin_unlock(&_dump_buf_lock);
3213
3214 if (lpfc_bgs_get_invalid_prof(bgstat)) {
3215 cmd->result = ScsiResult(DID_ERROR, 0);
737d4248
JS		 3216 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3217 "9072 BLKGRD: Invalid BG Profile in cmd"
3218 " 0x%x lba 0x%llx blk cnt 0x%x "
3219 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3220 (unsigned long long)scsi_get_lba(cmd),
3221 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3222 ret = (-1);
3223 goto out;
3224 }
3225
3226 if (lpfc_bgs_get_uninit_dif_block(bgstat)) {
3227 cmd->result = ScsiResult(DID_ERROR, 0);
737d4248
JS		 3228 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3229 "9073 BLKGRD: Invalid BG PDIF Block in cmd"
3230 " 0x%x lba 0x%llx blk cnt 0x%x "
3231 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3232 (unsigned long long)scsi_get_lba(cmd),
3233 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3234 ret = (-1);
3235 goto out;
3236 }
3237
3238 if (lpfc_bgs_get_guard_err(bgstat)) {
3239 ret = 1;
3240
3241 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3242 0x10, 0x1);
1c9fbafc 3243 cmd->result = DRIVER_SENSE << 24
e2a0a9d6
JS		 3244 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3245 phba->bg_guard_err_cnt++;
737d4248
JS		 3246 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3247 "9055 BLKGRD: Guard Tag error in cmd"
3248 " 0x%x lba 0x%llx blk cnt 0x%x "
3249 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3250 (unsigned long long)scsi_get_lba(cmd),
3251 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3252 }
3253
3254 if (lpfc_bgs_get_reftag_err(bgstat)) {
3255 ret = 1;
3256
3257 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3258 0x10, 0x3);
1c9fbafc 3259 cmd->result = DRIVER_SENSE << 24
e2a0a9d6
JS		 3260 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3261
3262 phba->bg_reftag_err_cnt++;
737d4248
JS		 3263 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3264 "9056 BLKGRD: Ref Tag error in cmd"
3265 " 0x%x lba 0x%llx blk cnt 0x%x "
3266 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3267 (unsigned long long)scsi_get_lba(cmd),
3268 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3269 }
3270
3271 if (lpfc_bgs_get_apptag_err(bgstat)) {
3272 ret = 1;
3273
3274 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
3275 0x10, 0x2);
1c9fbafc 3276 cmd->result = DRIVER_SENSE << 24
e2a0a9d6
JS		 3277 | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION);
3278
3279 phba->bg_apptag_err_cnt++;
737d4248
JS		 3280 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3281 "9061 BLKGRD: App Tag error in cmd"
3282 " 0x%x lba 0x%llx blk cnt 0x%x "
3283 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3284 (unsigned long long)scsi_get_lba(cmd),
3285 blk_rq_sectors(cmd->request), bgstat, bghm);
e2a0a9d6
JS		 3286 }
3287
3288 if (lpfc_bgs_get_hi_water_mark_present(bgstat)) {
3289 /*
3290 * setup sense data descriptor 0 per SPC-4 as an information
7c56b9fd
JS		 3291 * field, and put the failing LBA in it.
3292 * This code assumes there was also a guard/app/ref tag error
3293 * indication.
e2a0a9d6 3294 */
7c56b9fd
JS		 3295 cmd->sense_buffer[7] = 0xc; /* Additional sense length */
3296 cmd->sense_buffer[8] = 0; /* Information descriptor type */
3297 cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */
3298 cmd->sense_buffer[10] = 0x80; /* Validity bit */
acd6859b
JS		 3299
3300 /* bghm is a "on the wire" FC frame based count */
3301 switch (scsi_get_prot_op(cmd)) {
3302 case SCSI_PROT_READ_INSERT:
3303 case SCSI_PROT_WRITE_STRIP:
3304 bghm /= cmd->device->sector_size;
3305 break;
3306 case SCSI_PROT_READ_STRIP:
3307 case SCSI_PROT_WRITE_INSERT:
3308 case SCSI_PROT_READ_PASS:
3309 case SCSI_PROT_WRITE_PASS:
3310 bghm /= (cmd->device->sector_size +
3311 sizeof(struct scsi_dif_tuple));
3312 break;
3313 }
e2a0a9d6
JS		 3314
3315 failing_sector = scsi_get_lba(cmd);
3316 failing_sector += bghm;
3317
7c56b9fd
JS		 3318 /* Descriptor Information */
3319 put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]);
e2a0a9d6
JS		 3320 }
3321
3322 if (!ret) {
3323 /* No error was reported - problem in FW? */
737d4248
JS		 3324 lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG,
3325 "9057 BLKGRD: Unknown error in cmd"
3326 " 0x%x lba 0x%llx blk cnt 0x%x "
3327 "bgstat=x%x bghm=x%x\n", cmd->cmnd[0],
3328 (unsigned long long)scsi_get_lba(cmd),
3329 blk_rq_sectors(cmd->request), bgstat, bghm);
3330
3331 /* Calcuate what type of error it was */
3332 lpfc_calc_bg_err(phba, lpfc_cmd);
e2a0a9d6 3333 }
e2a0a9d6
JS		 3334out:
3335 return ret;
dea3101e
JB		 3336}
3337
da0436e9
JS		 3338/**
3339 * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3340 * @phba: The Hba for which this call is being executed.
3341 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3342 *
3343 * This routine does the pci dma mapping for scatter-gather list of scsi cmnd
3344 * field of @lpfc_cmd for device with SLI-4 interface spec.
3345 *
3346 * Return codes:
6c8eea54
JS		 3347 * 1 - Error
3348 * 0 - Success
da0436e9
JS		 3349 **/
3350static int
3351lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3352{
3353 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3354 struct scatterlist *sgel = NULL;
3355 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3356 struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
fedd3b7b 3357 struct sli4_sge *first_data_sgl;
da0436e9
JS		 3358 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
3359 dma_addr_t physaddr;
3360 uint32_t num_bde = 0;
3361 uint32_t dma_len;
3362 uint32_t dma_offset = 0;
3363 int nseg;
fedd3b7b 3364 struct ulp_bde64 *bde;
da0436e9
JS		 3365
3366 /*
3367 * There are three possibilities here - use scatter-gather segment, use
3368 * the single mapping, or neither. Start the lpfc command prep by
3369 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
3370 * data bde entry.
3371 */
3372 if (scsi_sg_count(scsi_cmnd)) {
3373 /*
3374 * The driver stores the segment count returned from pci_map_sg
3375 * because this a count of dma-mappings used to map the use_sg
3376 * pages. They are not guaranteed to be the same for those
3377 * architectures that implement an IOMMU.
3378 */
3379
3380 nseg = scsi_dma_map(scsi_cmnd);
3381 if (unlikely(!nseg))
3382 return 1;
3383 sgl += 1;
3384 /* clear the last flag in the fcp_rsp map entry */
3385 sgl->word2 = le32_to_cpu(sgl->word2);
3386 bf_set(lpfc_sli4_sge_last, sgl, 0);
3387 sgl->word2 = cpu_to_le32(sgl->word2);
3388 sgl += 1;
fedd3b7b 3389 first_data_sgl = sgl;
da0436e9
JS		 3390 lpfc_cmd->seg_cnt = nseg;
3391 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
6a9c52cf
JS		 3392 lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:"
3393 " %s: Too many sg segments from "
3394 "dma_map_sg. Config %d, seg_cnt %d\n",
3395 __func__, phba->cfg_sg_seg_cnt,
da0436e9 3396 lpfc_cmd->seg_cnt);
96f7077f 3397 lpfc_cmd->seg_cnt = 0;
da0436e9
JS		 3398 scsi_dma_unmap(scsi_cmnd);
3399 return 1;
3400 }
3401
3402 /*
3403 * The driver established a maximum scatter-gather segment count
3404 * during probe that limits the number of sg elements in any
3405 * single scsi command. Just run through the seg_cnt and format
3406 * the sge's.
3407 * When using SLI-3 the driver will try to fit all the BDEs into
3408 * the IOCB. If it can't then the BDEs get added to a BPL as it
3409 * does for SLI-2 mode.
3410 */
3411 scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) {
3412 physaddr = sg_dma_address(sgel);
3413 dma_len = sg_dma_len(sgel);
da0436e9
JS		 3414 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr));
3415 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr));
0558056c 3416 sgl->word2 = le32_to_cpu(sgl->word2);
da0436e9
JS		 3417 if ((num_bde + 1) == nseg)
3418 bf_set(lpfc_sli4_sge_last, sgl, 1);
3419 else
3420 bf_set(lpfc_sli4_sge_last, sgl, 0);
3421 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset);
f9bb2da1 3422 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
da0436e9 3423 sgl->word2 = cpu_to_le32(sgl->word2);
28baac74 3424 sgl->sge_len = cpu_to_le32(dma_len);
da0436e9
JS		 3425 dma_offset += dma_len;
3426 sgl++;
3427 }
fedd3b7b
JS		 3428 /* setup the performance hint (first data BDE) if enabled */
3429 if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) {
3430 bde = (struct ulp_bde64 *)
3431 &(iocb_cmd->unsli3.sli3Words[5]);
3432 bde->addrLow = first_data_sgl->addr_lo;
3433 bde->addrHigh = first_data_sgl->addr_hi;
3434 bde->tus.f.bdeSize =
3435 le32_to_cpu(first_data_sgl->sge_len);
3436 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3437 bde->tus.w = cpu_to_le32(bde->tus.w);
3438 }
da0436e9
JS		 3439 } else {
3440 sgl += 1;
3441 /* clear the last flag in the fcp_rsp map entry */
3442 sgl->word2 = le32_to_cpu(sgl->word2);
3443 bf_set(lpfc_sli4_sge_last, sgl, 1);
3444 sgl->word2 = cpu_to_le32(sgl->word2);
3445 }
3446
3447 /*
3448 * Finish initializing those IOCB fields that are dependent on the
3449 * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is
3450 * explicitly reinitialized.
3451 * all iocb memory resources are reused.
3452 */
3453 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
3454
3455 /*
3456 * Due to difference in data length between DIF/non-DIF paths,
3457 * we need to set word 4 of IOCB here
3458 */
3459 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
1ba981fd
JS		 3460
3461 /*
3462 * If the OAS driver feature is enabled and the lun is enabled for
3463 * OAS, set the oas iocb related flags.
3464 */
f38fa0bb 3465 if ((phba->cfg_fof) && ((struct lpfc_device_data *)
1ba981fd
JS		 3466 scsi_cmnd->device->hostdata)->oas_enabled)
3467 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_OAS;
da0436e9
JS		 3468 return 0;
3469}
3470
acd6859b
JS		 3471/**
3472 * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec
3473 * @phba: The Hba for which this call is being executed.
3474 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3475 *
3476 * This is the protection/DIF aware version of
3477 * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the
3478 * two functions eventually, but for now, it's here
3479 **/
3480static int
3481lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
3482 struct lpfc_scsi_buf *lpfc_cmd)
3483{
3484 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
3485 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
3486 struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl);
3487 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
96f7077f 3488 uint32_t num_sge = 0;
acd6859b
JS		 3489 int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction;
3490 int prot_group_type = 0;
3491 int fcpdl;
3492
3493 /*
3494 * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd
96f7077f 3495 * fcp_rsp regions to the first data sge entry
acd6859b
JS		 3496 */
3497 if (scsi_sg_count(scsi_cmnd)) {
3498 /*
3499 * The driver stores the segment count returned from pci_map_sg
3500 * because this a count of dma-mappings used to map the use_sg
3501 * pages. They are not guaranteed to be the same for those
3502 * architectures that implement an IOMMU.
3503 */
3504 datasegcnt = dma_map_sg(&phba->pcidev->dev,
3505 scsi_sglist(scsi_cmnd),
3506 scsi_sg_count(scsi_cmnd), datadir);
3507 if (unlikely(!datasegcnt))
3508 return 1;
3509
3510 sgl += 1;
3511 /* clear the last flag in the fcp_rsp map entry */
3512 sgl->word2 = le32_to_cpu(sgl->word2);
3513 bf_set(lpfc_sli4_sge_last, sgl, 0);
3514 sgl->word2 = cpu_to_le32(sgl->word2);
3515
3516 sgl += 1;
3517 lpfc_cmd->seg_cnt = datasegcnt;
96f7077f
JS		 3518
3519 /* First check if data segment count from SCSI Layer is good */
3520 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt)
3521 goto err;
acd6859b
JS		 3522
3523 prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd);
3524
3525 switch (prot_group_type) {
3526 case LPFC_PG_TYPE_NO_DIF:
96f7077f
JS		 3527 /* Here we need to add a DISEED to the count */
3528 if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt)
3529 goto err;
3530
3531 num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl,
acd6859b 3532 datasegcnt);
96f7077f 3533
acd6859b 3534 /* we should have 2 or more entries in buffer list */
96f7077f 3535 if (num_sge < 2)
acd6859b
JS		 3536 goto err;
3537 break;
96f7077f
JS		 3538
3539 case LPFC_PG_TYPE_DIF_BUF:
acd6859b
JS		 3540 /*
3541 * This type indicates that protection buffers are
3542 * passed to the driver, so that needs to be prepared
3543 * for DMA
3544 */
3545 protsegcnt = dma_map_sg(&phba->pcidev->dev,
3546 scsi_prot_sglist(scsi_cmnd),
3547 scsi_prot_sg_count(scsi_cmnd), datadir);
3548 if (unlikely(!protsegcnt)) {
3549 scsi_dma_unmap(scsi_cmnd);
3550 return 1;
3551 }
3552
3553 lpfc_cmd->prot_seg_cnt = protsegcnt;
96f7077f
JS		 3554 /*
3555 * There is a minimun of 3 SGEs used for every
3556 * protection data segment.
3557 */
3558 if ((lpfc_cmd->prot_seg_cnt * 3) >
3559 (phba->cfg_total_seg_cnt - 2))
3560 goto err;
acd6859b 3561
96f7077f 3562 num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl,
acd6859b 3563 datasegcnt, protsegcnt);
96f7077f 3564
acd6859b 3565 /* we should have 3 or more entries in buffer list */
96f7077f
JS		 3566 if ((num_sge < 3) ||
3567 (num_sge > phba->cfg_total_seg_cnt))
acd6859b
JS		 3568 goto err;
3569 break;
96f7077f 3570
acd6859b
JS		 3571 case LPFC_PG_TYPE_INVALID:
3572 default:
96f7077f
JS		 3573 scsi_dma_unmap(scsi_cmnd);
3574 lpfc_cmd->seg_cnt = 0;
3575
acd6859b
JS		 3576 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
3577 "9083 Unexpected protection group %i\n",
3578 prot_group_type);
3579 return 1;
3580 }
3581 }
3582
8012cc38
JS		 3583 switch (scsi_get_prot_op(scsi_cmnd)) {
3584 case SCSI_PROT_WRITE_STRIP:
3585 case SCSI_PROT_READ_STRIP:
3586 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
3587 break;
3588 case SCSI_PROT_WRITE_INSERT:
3589 case SCSI_PROT_READ_INSERT:
3590 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
3591 break;
3592 case SCSI_PROT_WRITE_PASS:
3593 case SCSI_PROT_READ_PASS:
3594 lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
3595 break;
3596 }
3597
acd6859b 3598 fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
acd6859b
JS		 3599 fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
3600
3601 /*
3602 * Due to difference in data length between DIF/non-DIF paths,
3603 * we need to set word 4 of IOCB here
3604 */
3605 iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
acd6859b
JS		 3606
3607 return 0;
3608err:
96f7077f
JS		 3609 if (lpfc_cmd->seg_cnt)
3610 scsi_dma_unmap(scsi_cmnd);
3611 if (lpfc_cmd->prot_seg_cnt)
3612 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd),
3613 scsi_prot_sg_count(scsi_cmnd),
3614 scsi_cmnd->sc_data_direction);
3615
acd6859b 3616 lpfc_printf_log(phba, KERN_ERR, LOG_FCP,
96f7077f
JS		 3617 "9084 Cannot setup S/G List for HBA"
3618 "IO segs %d/%d SGL %d SCSI %d: %d %d\n",
3619 lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt,
3620 phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt,
3621 prot_group_type, num_sge);
3622
3623 lpfc_cmd->seg_cnt = 0;
3624 lpfc_cmd->prot_seg_cnt = 0;
acd6859b
JS		 3625 return 1;
3626}
3627
3772a991
JS		 3628/**
3629 * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3630 * @phba: The Hba for which this call is being executed.
3631 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3632 *
3633 * This routine wraps the actual DMA mapping function pointer from the
3634 * lpfc_hba struct.
3635 *
3636 * Return codes:
6c8eea54
JS		 3637 * 1 - Error
3638 * 0 - Success
3772a991
JS		 3639 **/
3640static inline int
3641lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3642{
3643 return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
3644}
3645
acd6859b
JS		 3646/**
3647 * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer
3648 * using BlockGuard.
3649 * @phba: The Hba for which this call is being executed.
3650 * @lpfc_cmd: The scsi buffer which is going to be mapped.
3651 *
3652 * This routine wraps the actual DMA mapping function pointer from the
3653 * lpfc_hba struct.
3654 *
3655 * Return codes:
3656 * 1 - Error
3657 * 0 - Success
3658 **/
3659static inline int
3660lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
3661{
3662 return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
3663}
3664
ea2151b4 3665/**
3621a710 3666 * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
ea2151b4
JS		 3667 * @phba: Pointer to hba context object.
3668 * @vport: Pointer to vport object.
3669 * @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
3670 * @rsp_iocb: Pointer to response iocb object which reported error.
3671 *
3672 * This function posts an event when there is a SCSI command reporting
3673 * error from the scsi device.
3674 **/
3675static void
3676lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport,
3677 struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) {
3678 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3679 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
3680 uint32_t resp_info = fcprsp->rspStatus2;
3681 uint32_t scsi_status = fcprsp->rspStatus3;
3682 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
3683 struct lpfc_fast_path_event *fast_path_evt = NULL;
3684 struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode;
3685 unsigned long flags;
3686
5989b8d4
JS		 3687 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
3688 return;
3689
ea2151b4
JS		 3690 /* If there is queuefull or busy condition send a scsi event */
3691 if ((cmnd->result == SAM_STAT_TASK_SET_FULL) ||
3692 (cmnd->result == SAM_STAT_BUSY)) {
3693 fast_path_evt = lpfc_alloc_fast_evt(phba);
3694 if (!fast_path_evt)
3695 return;
3696 fast_path_evt->un.scsi_evt.event_type =
3697 FC_REG_SCSI_EVENT;
3698 fast_path_evt->un.scsi_evt.subcategory =
3699 (cmnd->result == SAM_STAT_TASK_SET_FULL) ?
3700 LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY;
3701 fast_path_evt->un.scsi_evt.lun = cmnd->device->lun;
3702 memcpy(&fast_path_evt->un.scsi_evt.wwpn,
3703 &pnode->nlp_portname, sizeof(struct lpfc_name));
3704 memcpy(&fast_path_evt->un.scsi_evt.wwnn,
3705 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3706 } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen &&
3707 ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) {
3708 fast_path_evt = lpfc_alloc_fast_evt(phba);
3709 if (!fast_path_evt)
3710 return;
3711 fast_path_evt->un.check_cond_evt.scsi_event.event_type =
3712 FC_REG_SCSI_EVENT;
3713 fast_path_evt->un.check_cond_evt.scsi_event.subcategory =
3714 LPFC_EVENT_CHECK_COND;
3715 fast_path_evt->un.check_cond_evt.scsi_event.lun =
3716 cmnd->device->lun;
3717 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn,
3718 &pnode->nlp_portname, sizeof(struct lpfc_name));
3719 memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn,
3720 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3721 fast_path_evt->un.check_cond_evt.sense_key =
3722 cmnd->sense_buffer[2] & 0xf;
3723 fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12];
3724 fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13];
3725 } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3726 fcpi_parm &&
3727 ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) ||
3728 ((scsi_status == SAM_STAT_GOOD) &&
3729 !(resp_info & (RESID_UNDER | RESID_OVER))))) {
3730 /*
3731 * If status is good or resid does not match with fcp_param and
3732 * there is valid fcpi_parm, then there is a read_check error
3733 */
3734 fast_path_evt = lpfc_alloc_fast_evt(phba);
3735 if (!fast_path_evt)
3736 return;
3737 fast_path_evt->un.read_check_error.header.event_type =
3738 FC_REG_FABRIC_EVENT;
3739 fast_path_evt->un.read_check_error.header.subcategory =
3740 LPFC_EVENT_FCPRDCHKERR;
3741 memcpy(&fast_path_evt->un.read_check_error.header.wwpn,
3742 &pnode->nlp_portname, sizeof(struct lpfc_name));
3743 memcpy(&fast_path_evt->un.read_check_error.header.wwnn,
3744 &pnode->nlp_nodename, sizeof(struct lpfc_name));
3745 fast_path_evt->un.read_check_error.lun = cmnd->device->lun;
3746 fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0];
3747 fast_path_evt->un.read_check_error.fcpiparam =
3748 fcpi_parm;
3749 } else
3750 return;
3751
3752 fast_path_evt->vport = vport;
3753 spin_lock_irqsave(&phba->hbalock, flags);
3754 list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list);
3755 spin_unlock_irqrestore(&phba->hbalock, flags);
3756 lpfc_worker_wake_up(phba);
3757 return;
3758}
9bad7671
JS		 3759
3760/**
f1126688 3761 * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev
3772a991 3762 * @phba: The HBA for which this call is being executed.
9bad7671
JS		 3763 * @psb: The scsi buffer which is going to be un-mapped.
3764 *
3765 * This routine does DMA un-mapping of scatter gather list of scsi command
3772a991 3766 * field of @lpfc_cmd for device with SLI-3 interface spec.
9bad7671 3767 **/
bcf4dbfa 3768static void
f1126688 3769lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
bcf4dbfa
JS		 3770{
3771 /*
3772 * There are only two special cases to consider. (1) the scsi command
3773 * requested scatter-gather usage or (2) the scsi command allocated
3774 * a request buffer, but did not request use_sg. There is a third
3775 * case, but it does not require resource deallocation.
3776 */
a0b4f78f
FT		 3777 if (psb->seg_cnt > 0)
3778 scsi_dma_unmap(psb->pCmd);
e2a0a9d6
JS		 3779 if (psb->prot_seg_cnt > 0)
3780 dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd),
3781 scsi_prot_sg_count(psb->pCmd),
3782 psb->pCmd->sc_data_direction);
bcf4dbfa
JS		 3783}
3784
9bad7671 3785/**
3621a710 3786 * lpfc_handler_fcp_err - FCP response handler
9bad7671
JS		 3787 * @vport: The virtual port for which this call is being executed.
3788 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
3789 * @rsp_iocb: The response IOCB which contains FCP error.
3790 *
3791 * This routine is called to process response IOCB with status field
3792 * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command
3793 * based upon SCSI and FCP error.
3794 **/
dea3101e 3795static void
2e0fef85
JS		 3796lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
3797 struct lpfc_iocbq *rsp_iocb)
dea3101e
JB		 3798{
3799 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
3800 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
3801 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
7054a606 3802 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
dea3101e
JB		 3803 uint32_t resp_info = fcprsp->rspStatus2;
3804 uint32_t scsi_status = fcprsp->rspStatus3;
c7743956 3805 uint32_t *lp;
dea3101e
JB		 3806 uint32_t host_status = DID_OK;
3807 uint32_t rsplen = 0;
c7743956 3808 uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
dea3101e 3809
ea2151b4 3810
dea3101e
JB		 3811 /*
3812 * If this is a task management command, there is no
3813 * scsi packet associated with this lpfc_cmd. The driver
3814 * consumes it.
3815 */
3816 if (fcpcmd->fcpCntl2) {
3817 scsi_status = 0;
3818 goto out;
3819 }
3820
6a9c52cf
JS		 3821 if (resp_info & RSP_LEN_VALID) {
3822 rsplen = be32_to_cpu(fcprsp->rspRspLen);
e40a02c1 3823 if (rsplen != 0 && rsplen != 4 && rsplen != 8) {
6a9c52cf
JS		 3824 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3825 "2719 Invalid response length: "
3826 "tgt x%x lun x%x cmnd x%x rsplen x%x\n",
3827 cmnd->device->id,
3828 cmnd->device->lun, cmnd->cmnd[0],
3829 rsplen);
3830 host_status = DID_ERROR;
3831 goto out;
3832 }
e40a02c1
JS		 3833 if (fcprsp->rspInfo3 != RSP_NO_FAILURE) {
3834 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
3835 "2757 Protocol failure detected during "
3836 "processing of FCP I/O op: "
3837 "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n",
3838 cmnd->device->id,
3839 cmnd->device->lun, cmnd->cmnd[0],
3840 fcprsp->rspInfo3);
3841 host_status = DID_ERROR;
3842 goto out;
3843 }
6a9c52cf
JS		 3844 }
3845
c7743956
JS		 3846 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
3847 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
3848 if (snslen > SCSI_SENSE_BUFFERSIZE)
3849 snslen = SCSI_SENSE_BUFFERSIZE;
3850
3851 if (resp_info & RSP_LEN_VALID)
3852 rsplen = be32_to_cpu(fcprsp->rspRspLen);
3853 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
3854 }
3855 lp = (uint32_t *)cmnd->sense_buffer;
3856
aa1c7ee7
JS		 3857 /* special handling for under run conditions */
3858 if (!scsi_status && (resp_info & RESID_UNDER)) {
3859 /* don't log under runs if fcp set... */
3860 if (vport->cfg_log_verbose & LOG_FCP)
3861 logit = LOG_FCP_ERROR;
3862 /* unless operator says so */
3863 if (vport->cfg_log_verbose & LOG_FCP_UNDER)
3864 logit = LOG_FCP_UNDER;
3865 }
c7743956 3866
e8b62011 3867 lpfc_printf_vlog(vport, KERN_WARNING, logit,
e2a0a9d6 3868 "9024 FCP command x%x failed: x%x SNS x%x x%x "
e8b62011
JS		 3869 "Data: x%x x%x x%x x%x x%x\n",
3870 cmnd->cmnd[0], scsi_status,
3871 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
3872 be32_to_cpu(fcprsp->rspResId),
3873 be32_to_cpu(fcprsp->rspSnsLen),
3874 be32_to_cpu(fcprsp->rspRspLen),
3875 fcprsp->rspInfo3);
dea3101e 3876
a0b4f78f 3877 scsi_set_resid(cmnd, 0);
dea3101e 3878 if (resp_info & RESID_UNDER) {
a0b4f78f 3879 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
dea3101e 3880
73d91e50 3881 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER,
e2a0a9d6 3882 "9025 FCP Read Underrun, expected %d, "
e8b62011
JS		 3883 "residual %d Data: x%x x%x x%x\n",
3884 be32_to_cpu(fcpcmd->fcpDl),
3885 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
3886 cmnd->underflow);
dea3101e 3887
7054a606
JS		 3888 /*
3889 * If there is an under run check if under run reported by
3890 * storage array is same as the under run reported by HBA.
3891 * If this is not same, there is a dropped frame.
3892 */
3893 if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
3894 fcpi_parm &&
a0b4f78f 3895 (scsi_get_resid(cmnd) != fcpi_parm)) {
e8b62011
JS		 3896 lpfc_printf_vlog(vport, KERN_WARNING,
3897 LOG_FCP | LOG_FCP_ERROR,
e2a0a9d6 3898 "9026 FCP Read Check Error "
e8b62011
JS		 3899 "and Underrun Data: x%x x%x x%x x%x\n",
3900 be32_to_cpu(fcpcmd->fcpDl),
3901 scsi_get_resid(cmnd), fcpi_parm,
3902 cmnd->cmnd[0]);
a0b4f78f 3903 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
7054a606
JS		 3904 host_status = DID_ERROR;
3905 }
dea3101e
JB		 3906 /*
3907 * The cmnd->underflow is the minimum number of bytes that must
25985edc 3908 * be transferred for this command. Provided a sense condition
dea3101e
JB		 3909 * is not present, make sure the actual amount transferred is at
3910 * least the underflow value or fail.
3911 */
3912 if (!(resp_info & SNS_LEN_VALID) &&
3913 (scsi_status == SAM_STAT_GOOD) &&
a0b4f78f
FT		 3914 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
3915 < cmnd->underflow)) {
e8b62011 3916 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
e2a0a9d6 3917 "9027 FCP command x%x residual "
e8b62011
JS		 3918 "underrun converted to error "
3919 "Data: x%x x%x x%x\n",
66dbfbe6 3920 cmnd->cmnd[0], scsi_bufflen(cmnd),
e8b62011 3921 scsi_get_resid(cmnd), cmnd->underflow);
dea3101e
JB		 3922 host_status = DID_ERROR;
3923 }
3924 } else if (resp_info & RESID_OVER) {
e8b62011 3925 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
e2a0a9d6 3926 "9028 FCP command x%x residual overrun error. "
e4e74273 3927 "Data: x%x x%x\n", cmnd->cmnd[0],
e8b62011 3928 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
dea3101e
JB		 3929 host_status = DID_ERROR;
3930
3931 /*
3932 * Check SLI validation that all the transfer was actually done
26373d23 3933 * (fcpi_parm should be zero). Apply check only to reads.
dea3101e 3934 */
26373d23 3935 } else if (fcpi_parm && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
e8b62011 3936 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
26373d23 3937 "9029 FCP Read Check Error Data: "
eee8877e 3938 "x%x x%x x%x x%x x%x\n",
e8b62011
JS		 3939 be32_to_cpu(fcpcmd->fcpDl),
3940 be32_to_cpu(fcprsp->rspResId),
eee8877e
JS		 3941 fcpi_parm, cmnd->cmnd[0], scsi_status);
3942 switch (scsi_status) {
3943 case SAM_STAT_GOOD:
3944 case SAM_STAT_CHECK_CONDITION:
3945 /* Fabric dropped a data frame. Fail any successful
3946 * command in which we detected dropped frames.
3947 * A status of good or some check conditions could
3948 * be considered a successful command.
3949 */
3950 host_status = DID_ERROR;
3951 break;
3952 }
a0b4f78f 3953 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
dea3101e
JB		 3954 }
3955
3956 out:
3957 cmnd->result = ScsiResult(host_status, scsi_status);
ea2151b4 3958 lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb);
dea3101e
JB		 3959}
3960
9bad7671 3961/**
3621a710 3962 * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
9bad7671
JS		 3963 * @phba: The Hba for which this call is being executed.
3964 * @pIocbIn: The command IOCBQ for the scsi cmnd.
3772a991 3965 * @pIocbOut: The response IOCBQ for the scsi cmnd.
9bad7671
JS		 3966 *
3967 * This routine assigns scsi command result by looking into response IOCB
3968 * status field appropriately. This routine handles QUEUE FULL condition as
3969 * well by ramping down device queue depth.
3970 **/
dea3101e
JB		 3971static void
3972lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
3973 struct lpfc_iocbq *pIocbOut)
3974{
3975 struct lpfc_scsi_buf *lpfc_cmd =
3976 (struct lpfc_scsi_buf *) pIocbIn->context1;
2e0fef85 3977 struct lpfc_vport *vport = pIocbIn->vport;
dea3101e
JB		 3978 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
3979 struct lpfc_nodelist *pnode = rdata->pnode;
75baf696 3980 struct scsi_cmnd *cmd;
445cf4f4 3981 int result;
5ffc266e 3982 int depth;
fa61a54e 3983 unsigned long flags;
ea2151b4 3984 struct lpfc_fast_path_event *fast_path_evt;
75baf696 3985 struct Scsi_Host *shost;
a257bf90 3986 uint32_t queue_depth, scsi_id;
73d91e50 3987 uint32_t logit = LOG_FCP;
dea3101e 3988
75baf696
JS		 3989 /* Sanity check on return of outstanding command */
3990 if (!(lpfc_cmd->pCmd))
3991 return;
3992 cmd = lpfc_cmd->pCmd;
3993 shost = cmd->device->host;
3994
e3d2b802 3995 lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK);
dea3101e 3996 lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
341af102
JS		 3997 /* pick up SLI4 exhange busy status from HBA */
3998 lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY;
3999
9a6b09c0
JS		 4000#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
4001 if (lpfc_cmd->prot_data_type) {
4002 struct scsi_dif_tuple *src = NULL;
4003
4004 src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment;
4005 /*
4006 * Used to restore any changes to protection
4007 * data for error injection.
4008 */
4009 switch (lpfc_cmd->prot_data_type) {
4010 case LPFC_INJERR_REFTAG:
4011 src->ref_tag =
4012 lpfc_cmd->prot_data;
4013 break;
4014 case LPFC_INJERR_APPTAG:
4015 src->app_tag =
4016 (uint16_t)lpfc_cmd->prot_data;
4017 break;
4018 case LPFC_INJERR_GUARD:
4019 src->guard_tag =
4020 (uint16_t)lpfc_cmd->prot_data;
4021 break;
4022 default:
4023 break;
4024 }
4025
4026 lpfc_cmd->prot_data = 0;
4027 lpfc_cmd->prot_data_type = 0;
4028 lpfc_cmd->prot_data_segment = NULL;
4029 }
4030#endif
109f6ed0
JS		 4031 if (pnode && NLP_CHK_NODE_ACT(pnode))
4032 atomic_dec(&pnode->cmd_pending);
dea3101e
JB		 4033
4034 if (lpfc_cmd->status) {
4035 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
4036 (lpfc_cmd->result & IOERR_DRVR_MASK))
4037 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
4038 else if (lpfc_cmd->status >= IOSTAT_CNT)
4039 lpfc_cmd->status = IOSTAT_DEFAULT;
aa1c7ee7
JS		 4040 if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
4041 !lpfc_cmd->fcp_rsp->rspStatus3 &&
4042 (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
4043 !(vport->cfg_log_verbose & LOG_FCP_UNDER))
73d91e50
JS		 4044 logit = 0;
4045 else
4046 logit = LOG_FCP | LOG_FCP_UNDER;
4047 lpfc_printf_vlog(vport, KERN_WARNING, logit,
4048 "9030 FCP cmd x%x failed <%d/%d> "
5a0d80fc
JS		 4049 "status: x%x result: x%x "
4050 "sid: x%x did: x%x oxid: x%x "
4051 "Data: x%x x%x\n",
73d91e50
JS		 4052 cmd->cmnd[0],
4053 cmd->device ? cmd->device->id : 0xffff,
4054 cmd->device ? cmd->device->lun : 0xffff,
4055 lpfc_cmd->status, lpfc_cmd->result,
3bf41ba9
JS		 4056 vport->fc_myDID,
4057 (pnode) ? pnode->nlp_DID : 0,
5a0d80fc
JS		 4058 phba->sli_rev == LPFC_SLI_REV4 ?
4059 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
73d91e50
JS		 4060 pIocbOut->iocb.ulpContext,
4061 lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
dea3101e
JB		 4062
4063 switch (lpfc_cmd->status) {
4064 case IOSTAT_FCP_RSP_ERROR:
4065 /* Call FCP RSP handler to determine result */
2e0fef85 4066 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
dea3101e
JB		 4067 break;
4068 case IOSTAT_NPORT_BSY:
4069 case IOSTAT_FABRIC_BSY:
0f1f53a7 4070 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0);
ea2151b4
JS		 4071 fast_path_evt = lpfc_alloc_fast_evt(phba);
4072 if (!fast_path_evt)
4073 break;
4074 fast_path_evt->un.fabric_evt.event_type =
4075 FC_REG_FABRIC_EVENT;
4076 fast_path_evt->un.fabric_evt.subcategory =
4077 (lpfc_cmd->status == IOSTAT_NPORT_BSY) ?
4078 LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY;
4079 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4080 memcpy(&fast_path_evt->un.fabric_evt.wwpn,
4081 &pnode->nlp_portname,
4082 sizeof(struct lpfc_name));
4083 memcpy(&fast_path_evt->un.fabric_evt.wwnn,
4084 &pnode->nlp_nodename,
4085 sizeof(struct lpfc_name));
4086 }
4087 fast_path_evt->vport = vport;
4088 fast_path_evt->work_evt.evt =
4089 LPFC_EVT_FASTPATH_MGMT_EVT;
4090 spin_lock_irqsave(&phba->hbalock, flags);
4091 list_add_tail(&fast_path_evt->work_evt.evt_listp,
4092 &phba->work_list);
4093 spin_unlock_irqrestore(&phba->hbalock, flags);
4094 lpfc_worker_wake_up(phba);
dea3101e 4095 break;
92d7f7b0 4096 case IOSTAT_LOCAL_REJECT:
1151e3ec 4097 case IOSTAT_REMOTE_STOP:
ab56dc2e
JS		 4098 if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
4099 lpfc_cmd->result ==
4100 IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR ||
4101 lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR ||
4102 lpfc_cmd->result ==
4103 IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) {
4104 cmd->result = ScsiResult(DID_NO_CONNECT, 0);
4105 break;
4106 }
d7c255b2 4107 if (lpfc_cmd->result == IOERR_INVALID_RPI ||
92d7f7b0 4108 lpfc_cmd->result == IOERR_NO_RESOURCES ||
b92938b4
JS		 4109 lpfc_cmd->result == IOERR_ABORT_REQUESTED ||
4110 lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) {
92d7f7b0 4111 cmd->result = ScsiResult(DID_REQUEUE, 0);
58da1ffb 4112 break;
e2a0a9d6 4113 }
e2a0a9d6
JS		 4114 if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
4115 lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
4116 pIocbOut->iocb.unsli3.sli3_bg.bgstat) {
4117 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
4118 /*
4119 * This is a response for a BG enabled
4120 * cmd. Parse BG error
4121 */
4122 lpfc_parse_bg_err(phba, lpfc_cmd,
4123 pIocbOut);
4124 break;
4125 } else {
4126 lpfc_printf_vlog(vport, KERN_WARNING,
4127 LOG_BG,
4128 "9031 non-zero BGSTAT "
6a9c52cf 4129 "on unprotected cmd\n");
e2a0a9d6
JS		 4130 }
4131 }
1151e3ec
JS		 4132 if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP)
4133 && (phba->sli_rev == LPFC_SLI_REV4)
4134 && (pnode && NLP_CHK_NODE_ACT(pnode))) {
4135 /* This IO was aborted by the target, we don't
4136 * know the rxid and because we did not send the
4137 * ABTS we cannot generate and RRQ.
4138 */
4139 lpfc_set_rrq_active(phba, pnode,
ee0f4fe1
JS		 4140 lpfc_cmd->cur_iocbq.sli4_lxritag,
4141 0, 0);
1151e3ec 4142 }
e2a0a9d6 4143 /* else: fall through */
dea3101e
JB		 4144 default:
4145 cmd->result = ScsiResult(DID_ERROR, 0);
4146 break;
4147 }
4148
58da1ffb 4149 if (!pnode || !NLP_CHK_NODE_ACT(pnode)
19a7b4ae 4150 || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
0f1f53a7
JS		 4151 cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED,
4152 SAM_STAT_BUSY);
ab56dc2e 4153 } else
dea3101e 4154 cmd->result = ScsiResult(DID_OK, 0);
dea3101e
JB		 4155
4156 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
4157 uint32_t *lp = (uint32_t *)cmd->sense_buffer;
4158
e8b62011
JS		 4159 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4160 "0710 Iodone <%d/%d> cmd %p, error "
4161 "x%x SNS x%x x%x Data: x%x x%x\n",
4162 cmd->device->id, cmd->device->lun, cmd,
4163 cmd->result, *lp, *(lp + 3), cmd->retries,
4164 scsi_get_resid(cmd));
dea3101e
JB		 4165 }
4166
ea2151b4 4167 lpfc_update_stats(phba, lpfc_cmd);
445cf4f4 4168 result = cmd->result;
977b5a0a
JS		 4169 if (vport->cfg_max_scsicmpl_time &&
4170 time_after(jiffies, lpfc_cmd->start_time +
4171 msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
a257bf90 4172 spin_lock_irqsave(shost->host_lock, flags);
109f6ed0
JS		 4173 if (pnode && NLP_CHK_NODE_ACT(pnode)) {
4174 if (pnode->cmd_qdepth >
4175 atomic_read(&pnode->cmd_pending) &&
4176 (atomic_read(&pnode->cmd_pending) >
4177 LPFC_MIN_TGT_QDEPTH) &&
4178 ((cmd->cmnd[0] == READ_10) ||
4179 (cmd->cmnd[0] == WRITE_10)))
4180 pnode->cmd_qdepth =
4181 atomic_read(&pnode->cmd_pending);
4182
4183 pnode->last_change_time = jiffies;
4184 }
a257bf90 4185 spin_unlock_irqrestore(shost->host_lock, flags);
109f6ed0 4186 } else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
7dc517df 4187 if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) &&
977b5a0a 4188 time_after(jiffies, pnode->last_change_time +
109f6ed0 4189 msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
a257bf90 4190 spin_lock_irqsave(shost->host_lock, flags);
7dc517df
JS		 4191 depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT
4192 / 100;
4193 depth = depth ? depth : 1;
4194 pnode->cmd_qdepth += depth;
4195 if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth)
4196 pnode->cmd_qdepth = vport->cfg_tgt_queue_depth;
109f6ed0 4197 pnode->last_change_time = jiffies;
a257bf90 4198 spin_unlock_irqrestore(shost->host_lock, flags);
109f6ed0 4199 }
977b5a0a
JS		 4200 }
4201
1dcb58e5 4202 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
a257bf90
JS		 4203
4204 /* The sdev is not guaranteed to be valid post scsi_done upcall. */
4205 queue_depth = cmd->device->queue_depth;
4206 scsi_id = cmd->device->id;
0bd4ca25
JSEC		 4207 cmd->scsi_done(cmd);
4208
b808608b 4209 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
876dd7d0 4210 spin_lock_irqsave(&phba->hbalock, flags);
92e3af66 4211 lpfc_cmd->pCmd = NULL;
876dd7d0 4212 spin_unlock_irqrestore(&phba->hbalock, flags);
92e3af66 4213
fa61a54e
JS		 4214 /*
4215 * If there is a thread waiting for command completion
4216 * wake up the thread.
4217 */
a257bf90 4218 spin_lock_irqsave(shost->host_lock, flags);
fa61a54e
JS		 4219 if (lpfc_cmd->waitq)
4220 wake_up(lpfc_cmd->waitq);
a257bf90 4221 spin_unlock_irqrestore(shost->host_lock, flags);
b808608b
JW		 4222 lpfc_release_scsi_buf(phba, lpfc_cmd);
4223 return;
4224 }
4225
876dd7d0 4226 spin_lock_irqsave(&phba->hbalock, flags);
92e3af66 4227 lpfc_cmd->pCmd = NULL;
876dd7d0 4228 spin_unlock_irqrestore(&phba->hbalock, flags);
92e3af66 4229
fa61a54e
JS		 4230 /*
4231 * If there is a thread waiting for command completion
4232 * wake up the thread.
4233 */
a257bf90 4234 spin_lock_irqsave(shost->host_lock, flags);
fa61a54e
JS		 4235 if (lpfc_cmd->waitq)
4236 wake_up(lpfc_cmd->waitq);
a257bf90 4237 spin_unlock_irqrestore(shost->host_lock, flags);
fa61a54e 4238
0bd4ca25 4239 lpfc_release_scsi_buf(phba, lpfc_cmd);
dea3101e
JB		 4240}
4241
34b02dcd 4242/**
3621a710 4243 * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
34b02dcd
JS		 4244 * @data: A pointer to the immediate command data portion of the IOCB.
4245 * @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
4246 *
4247 * The routine copies the entire FCP command from @fcp_cmnd to @data while
4248 * byte swapping the data to big endian format for transmission on the wire.
4249 **/
4250static void
4251lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd)
4252{
4253 int i, j;
4254 for (i = 0, j = 0; i < sizeof(struct fcp_cmnd);
4255 i += sizeof(uint32_t), j++) {
4256 ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]);
4257 }
4258}
4259
9bad7671 4260/**
f1126688 4261 * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit
9bad7671
JS		 4262 * @vport: The virtual port for which this call is being executed.
4263 * @lpfc_cmd: The scsi command which needs to send.
4264 * @pnode: Pointer to lpfc_nodelist.
4265 *
4266 * This routine initializes fcp_cmnd and iocb data structure from scsi command
3772a991 4267 * to transfer for device with SLI3 interface spec.
9bad7671 4268 **/
dea3101e 4269static void
f1126688 4270lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
2e0fef85 4271 struct lpfc_nodelist *pnode)
dea3101e 4272{
2e0fef85 4273 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 4274 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
4275 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
4276 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
4277 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
4278 int datadir = scsi_cmnd->sc_data_direction;
7e2b19fb 4279 char tag[2];
027140ea
JS		 4280 uint8_t *ptr;
4281 bool sli4;
98bbf5f7 4282 uint32_t fcpdl;
dea3101e 4283
58da1ffb
JS		 4284 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
4285 return;
4286
dea3101e 4287 lpfc_cmd->fcp_rsp->rspSnsLen = 0;
69859dc4
JSEC		 4288 /* clear task management bits */
4289 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
dea3101e 4290
91886523
JSEC		 4291 int_to_scsilun(lpfc_cmd->pCmd->device->lun,
4292 &lpfc_cmd->fcp_cmnd->fcp_lun);
dea3101e 4293
027140ea
JS		 4294 ptr = &fcp_cmnd->fcpCdb[0];
4295 memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len);
4296 if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) {
4297 ptr += scsi_cmnd->cmd_len;
4298 memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len));
4299 }
4300
7e2b19fb
JS		 4301 if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
4302 switch (tag[0]) {
dea3101e
JB		 4303 case HEAD_OF_QUEUE_TAG:
4304 fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
4305 break;
4306 case ORDERED_QUEUE_TAG:
4307 fcp_cmnd->fcpCntl1 = ORDERED_Q;
4308 break;
4309 default:
4310 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
4311 break;
4312 }
4313 } else
fe8f7f9c 4314 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
dea3101e 4315
027140ea 4316 sli4 = (phba->sli_rev == LPFC_SLI_REV4);
6acb3481 4317 piocbq->iocb.un.fcpi.fcpi_XRdy = 0;
027140ea 4318
dea3101e
JB		 4319 /*
4320 * There are three possibilities here - use scatter-gather segment, use
4321 * the single mapping, or neither. Start the lpfc command prep by
4322 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
4323 * data bde entry.
4324 */
a0b4f78f 4325 if (scsi_sg_count(scsi_cmnd)) {
dea3101e
JB		 4326 if (datadir == DMA_TO_DEVICE) {
4327 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
182ba753 4328 iocb_cmd->ulpPU = PARM_READ_CHECK;
3cb01c57
JS		 4329 if (vport->cfg_first_burst_size &&
4330 (pnode->nlp_flag & NLP_FIRSTBURST)) {
98bbf5f7
JS		 4331 fcpdl = scsi_bufflen(scsi_cmnd);
4332 if (fcpdl < vport->cfg_first_burst_size)
4333 piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl;
4334 else
4335 piocbq->iocb.un.fcpi.fcpi_XRdy =
4336 vport->cfg_first_burst_size;
3cb01c57 4337 }
dea3101e
JB		 4338 fcp_cmnd->fcpCntl3 = WRITE_DATA;
4339 phba->fc4OutputRequests++;
4340 } else {
4341 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
4342 iocb_cmd->ulpPU = PARM_READ_CHECK;
dea3101e
JB		 4343 fcp_cmnd->fcpCntl3 = READ_DATA;
4344 phba->fc4InputRequests++;
4345 }
4346 } else {
4347 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
4348 iocb_cmd->un.fcpi.fcpi_parm = 0;
4349 iocb_cmd->ulpPU = 0;
4350 fcp_cmnd->fcpCntl3 = 0;
4351 phba->fc4ControlRequests++;
4352 }
e2a0a9d6
JS		 4353 if (phba->sli_rev == 3 &&
4354 !(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
34b02dcd 4355 lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd);
dea3101e
JB		 4356 /*
4357 * Finish initializing those IOCB fields that are independent
4358 * of the scsi_cmnd request_buffer
4359 */
4360 piocbq->iocb.ulpContext = pnode->nlp_rpi;
027140ea 4361 if (sli4)
6d368e53
JS		 4362 piocbq->iocb.ulpContext =
4363 phba->sli4_hba.rpi_ids[pnode->nlp_rpi];
dea3101e
JB		 4364 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
4365 piocbq->iocb.ulpFCP2Rcvy = 1;
09372820
JS		 4366 else
4367 piocbq->iocb.ulpFCP2Rcvy = 0;
dea3101e
JB		 4368
4369 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
4370 piocbq->context1 = lpfc_cmd;
4371 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
4372 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
2e0fef85 4373 piocbq->vport = vport;
dea3101e
JB		 4374}
4375
da0436e9 4376/**
6d368e53 4377 * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit
9bad7671
JS		 4378 * @vport: The virtual port for which this call is being executed.
4379 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4380 * @lun: Logical unit number.
4381 * @task_mgmt_cmd: SCSI task management command.
4382 *
3772a991
JS		 4383 * This routine creates FCP information unit corresponding to @task_mgmt_cmd
4384 * for device with SLI-3 interface spec.
9bad7671
JS		 4385 *
4386 * Return codes:
4387 * 0 - Error
4388 * 1 - Success
4389 **/
dea3101e 4390static int
f1126688 4391lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
dea3101e 4392 struct lpfc_scsi_buf *lpfc_cmd,
420b630d 4393 unsigned int lun,
dea3101e
JB		 4394 uint8_t task_mgmt_cmd)
4395{
dea3101e
JB		 4396 struct lpfc_iocbq *piocbq;
4397 IOCB_t *piocb;
4398 struct fcp_cmnd *fcp_cmnd;
0b18ac42 4399 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
dea3101e
JB		 4400 struct lpfc_nodelist *ndlp = rdata->pnode;
4401
58da1ffb
JS		 4402 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
4403 ndlp->nlp_state != NLP_STE_MAPPED_NODE)
dea3101e 4404 return 0;
dea3101e 4405
dea3101e 4406 piocbq = &(lpfc_cmd->cur_iocbq);
2e0fef85
JS		 4407 piocbq->vport = vport;
4408
dea3101e
JB		 4409 piocb = &piocbq->iocb;
4410
4411 fcp_cmnd = lpfc_cmd->fcp_cmnd;
34b02dcd
JS		 4412 /* Clear out any old data in the FCP command area */
4413 memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd));
4414 int_to_scsilun(lun, &fcp_cmnd->fcp_lun);
dea3101e 4415 fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
e2a0a9d6
JS		 4416 if (vport->phba->sli_rev == 3 &&
4417 !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED))
34b02dcd 4418 lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd);
dea3101e 4419 piocb->ulpCommand = CMD_FCP_ICMND64_CR;
dea3101e 4420 piocb->ulpContext = ndlp->nlp_rpi;
6d368e53
JS		 4421 if (vport->phba->sli_rev == LPFC_SLI_REV4) {
4422 piocb->ulpContext =
4423 vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
4424 }
53151bbb 4425 piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0;
dea3101e 4426 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
f9226c20
JS		 4427 piocb->ulpPU = 0;
4428 piocb->un.fcpi.fcpi_parm = 0;
dea3101e
JB		 4429
4430 /* ulpTimeout is only one byte */
4431 if (lpfc_cmd->timeout > 0xff) {
4432 /*
4433 * Do not timeout the command at the firmware level.
4434 * The driver will provide the timeout mechanism.
4435 */
4436 piocb->ulpTimeout = 0;
f1126688 4437 } else
dea3101e 4438 piocb->ulpTimeout = lpfc_cmd->timeout;
da0436e9 4439
f1126688
JS		 4440 if (vport->phba->sli_rev == LPFC_SLI_REV4)
4441 lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd);
3772a991 4442
f1126688 4443 return 1;
3772a991
JS		 4444}
4445
4446/**
25985edc 4447 * lpfc_scsi_api_table_setup - Set up scsi api function jump table
3772a991
JS		 4448 * @phba: The hba struct for which this call is being executed.
4449 * @dev_grp: The HBA PCI-Device group number.
4450 *
4451 * This routine sets up the SCSI interface API function jump table in @phba
4452 * struct.
4453 * Returns: 0 - success, -ENODEV - failure.
4454 **/
4455int
4456lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4457{
4458
f1126688
JS		 4459 phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf;
4460 phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd;
f1126688 4461
3772a991
JS		 4462 switch (dev_grp) {
4463 case LPFC_PCI_DEV_LP:
4464 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3;
4465 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3;
acd6859b 4466 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3;
3772a991 4467 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3;
19ca7609 4468 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3;
3772a991 4469 break;
da0436e9
JS		 4470 case LPFC_PCI_DEV_OC:
4471 phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4;
4472 phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4;
acd6859b 4473 phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4;
da0436e9 4474 phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4;
19ca7609 4475 phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4;
da0436e9 4476 break;
3772a991
JS		 4477 default:
4478 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4479 "1418 Invalid HBA PCI-device group: 0x%x\n",
4480 dev_grp);
4481 return -ENODEV;
4482 break;
4483 }
3772a991 4484 phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
84d1b006 4485 phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
3772a991
JS		 4486 return 0;
4487}
4488
9bad7671 4489/**
3621a710 4490 * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
9bad7671
JS		 4491 * @phba: The Hba for which this call is being executed.
4492 * @cmdiocbq: Pointer to lpfc_iocbq data structure.
4493 * @rspiocbq: Pointer to lpfc_iocbq data structure.
4494 *
4495 * This routine is IOCB completion routine for device reset and target reset
4496 * routine. This routine release scsi buffer associated with lpfc_cmd.
4497 **/
7054a606
JS		 4498static void
4499lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
4500 struct lpfc_iocbq *cmdiocbq,
4501 struct lpfc_iocbq *rspiocbq)
4502{
4503 struct lpfc_scsi_buf *lpfc_cmd =
4504 (struct lpfc_scsi_buf *) cmdiocbq->context1;
4505 if (lpfc_cmd)
4506 lpfc_release_scsi_buf(phba, lpfc_cmd);
4507 return;
4508}
4509
9bad7671 4510/**
3621a710 4511 * lpfc_info - Info entry point of scsi_host_template data structure
9bad7671
JS		 4512 * @host: The scsi host for which this call is being executed.
4513 *
4514 * This routine provides module information about hba.
4515 *
4516 * Reutrn code:
4517 * Pointer to char - Success.
4518 **/
dea3101e
JB		 4519const char *
4520lpfc_info(struct Scsi_Host *host)
4521{
2e0fef85
JS		 4522 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
4523 struct lpfc_hba *phba = vport->phba;
8b68cd52 4524 int len, link_speed = 0;
dea3101e
JB		 4525 static char lpfcinfobuf[384];
4526
4527 memset(lpfcinfobuf,0,384);
4528 if (phba && phba->pcidev){
4529 strncpy(lpfcinfobuf, phba->ModelDesc, 256);
4530 len = strlen(lpfcinfobuf);
4531 snprintf(lpfcinfobuf + len,
4532 384-len,
4533 " on PCI bus %02x device %02x irq %d",
4534 phba->pcidev->bus->number,
4535 phba->pcidev->devfn,
4536 phba->pcidev->irq);
4537 len = strlen(lpfcinfobuf);
4538 if (phba->Port[0]) {
4539 snprintf(lpfcinfobuf + len,
4540 384-len,
4541 " port %s",
4542 phba->Port);
4543 }
65467b6b 4544 len = strlen(lpfcinfobuf);
8b68cd52
JS		 4545 if (phba->sli_rev <= LPFC_SLI_REV3) {
4546 link_speed = lpfc_sli_port_speed_get(phba);
4547 } else {
4548 if (phba->sli4_hba.link_state.logical_speed)
4549 link_speed =
4550 phba->sli4_hba.link_state.logical_speed;
4551 else
4552 link_speed = phba->sli4_hba.link_state.speed;
65467b6b 4553 }
8b68cd52
JS		 4554 if (link_speed != 0)
4555 snprintf(lpfcinfobuf + len, 384-len,
4556 " Logical Link Speed: %d Mbps", link_speed);
dea3101e
JB		 4557 }
4558 return lpfcinfobuf;
4559}
4560
9bad7671 4561/**
3621a710 4562 * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
9bad7671
JS		 4563 * @phba: The Hba for which this call is being executed.
4564 *
4565 * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
4566 * The default value of cfg_poll_tmo is 10 milliseconds.
4567 **/
875fbdfe
JSEC		 4568static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
4569{
4570 unsigned long poll_tmo_expires =
4571 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
4572
0e9bb8d7 4573 if (!list_empty(&phba->sli.ring[LPFC_FCP_RING].txcmplq))
875fbdfe
JSEC		 4574 mod_timer(&phba->fcp_poll_timer,
4575 poll_tmo_expires);
4576}
4577
9bad7671 4578/**
3621a710 4579 * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
9bad7671
JS		 4580 * @phba: The Hba for which this call is being executed.
4581 *
4582 * This routine starts the fcp_poll_timer of @phba.
4583 **/
875fbdfe
JSEC		 4584void lpfc_poll_start_timer(struct lpfc_hba * phba)
4585{
4586 lpfc_poll_rearm_timer(phba);
4587}
4588
9bad7671 4589/**
3621a710 4590 * lpfc_poll_timeout - Restart polling timer
9bad7671
JS		 4591 * @ptr: Map to lpfc_hba data structure pointer.
4592 *
4593 * This routine restarts fcp_poll timer, when FCP ring polling is enable
4594 * and FCP Ring interrupt is disable.
4595 **/
4596
875fbdfe
JSEC		 4597void lpfc_poll_timeout(unsigned long ptr)
4598{
2e0fef85 4599 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
875fbdfe
JSEC		 4600
4601 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
45ed1190
JS		 4602 lpfc_sli_handle_fast_ring_event(phba,
4603 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4604
875fbdfe
JSEC		 4605 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4606 lpfc_poll_rearm_timer(phba);
4607 }
875fbdfe
JSEC		 4608}
4609
9bad7671 4610/**
3621a710 4611 * lpfc_queuecommand - scsi_host_template queuecommand entry point
9bad7671
JS		 4612 * @cmnd: Pointer to scsi_cmnd data structure.
4613 * @done: Pointer to done routine.
4614 *
4615 * Driver registers this routine to scsi midlayer to submit a @cmd to process.
4616 * This routine prepares an IOCB from scsi command and provides to firmware.
4617 * The @done callback is invoked after driver finished processing the command.
4618 *
4619 * Return value :
4620 * 0 - Success
4621 * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily.
4622 **/
dea3101e 4623static int
b9a7c631 4624lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
dea3101e 4625{
2e0fef85
JS		 4626 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4627 struct lpfc_hba *phba = vport->phba;
1ba981fd 4628 struct lpfc_rport_data *rdata;
1c6f4ef5 4629 struct lpfc_nodelist *ndlp;
0bd4ca25 4630 struct lpfc_scsi_buf *lpfc_cmd;
19a7b4ae 4631 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
19a7b4ae 4632 int err;
dea3101e 4633
1ba981fd 4634 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
19a7b4ae
JSEC		 4635 err = fc_remote_port_chkready(rport);
4636 if (err) {
4637 cmnd->result = err;
dea3101e
JB		 4638 goto out_fail_command;
4639 }
1c6f4ef5 4640 ndlp = rdata->pnode;
dea3101e 4641
bf08611b 4642 if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) &&
acd6859b 4643 (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) {
e2a0a9d6 4644
6a9c52cf
JS		 4645 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
4646 "9058 BLKGRD: ERROR: rcvd protected cmd:%02x"
4647 " op:%02x str=%s without registering for"
4648 " BlockGuard - Rejecting command\n",
e2a0a9d6
JS		 4649 cmnd->cmnd[0], scsi_get_prot_op(cmnd),
4650 dif_op_str[scsi_get_prot_op(cmnd)]);
4651 goto out_fail_command;
4652 }
4653
dea3101e 4654 /*
19a7b4ae
JSEC		 4655 * Catch race where our node has transitioned, but the
4656 * transport is still transitioning.
dea3101e 4657 */
6b415f5d
JS		 4658 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp))
4659 goto out_tgt_busy;
7dc517df 4660 if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)
3496343d 4661 goto out_tgt_busy;
a93ce024 4662
19ca7609 4663 lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);
dea3101e 4664 if (lpfc_cmd == NULL) {
eaf15d5b 4665 lpfc_rampdown_queue_depth(phba);
92d7f7b0 4666
e8b62011
JS		 4667 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4668 "0707 driver's buffer pool is empty, "
4669 "IO busied\n");
dea3101e
JB		 4670 goto out_host_busy;
4671 }
4672
4673 /*
4674 * Store the midlayer's command structure for the completion phase
4675 * and complete the command initialization.
4676 */
4677 lpfc_cmd->pCmd = cmnd;
4678 lpfc_cmd->rdata = rdata;
4679 lpfc_cmd->timeout = 0;
977b5a0a 4680 lpfc_cmd->start_time = jiffies;
dea3101e 4681 cmnd->host_scribble = (unsigned char *)lpfc_cmd;
dea3101e 4682
e2a0a9d6 4683 if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) {
6a9c52cf 4684 if (vport->phba->cfg_enable_bg) {
737d4248
JS		 4685 lpfc_printf_vlog(vport,
4686 KERN_INFO, LOG_SCSI_CMD,
2613470a
JS		 4687 "9033 BLKGRD: rcvd %s cmd:x%x "
4688 "sector x%llx cnt %u pt %x\n",
4689 dif_op_str[scsi_get_prot_op(cmnd)],
4690 cmnd->cmnd[0],
4691 (unsigned long long)scsi_get_lba(cmnd),
4692 blk_rq_sectors(cmnd->request),
4693 (cmnd->cmnd[1]>>5));
6a9c52cf 4694 }
e2a0a9d6
JS		 4695 err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd);
4696 } else {
6a9c52cf 4697 if (vport->phba->cfg_enable_bg) {
737d4248
JS		 4698 lpfc_printf_vlog(vport,
4699 KERN_INFO, LOG_SCSI_CMD,
2613470a
JS		 4700 "9038 BLKGRD: rcvd PROT_NORMAL cmd: "
4701 "x%x sector x%llx cnt %u pt %x\n",
4702 cmnd->cmnd[0],
4703 (unsigned long long)scsi_get_lba(cmnd),
9a6b09c0 4704 blk_rq_sectors(cmnd->request),
2613470a 4705 (cmnd->cmnd[1]>>5));
6a9c52cf 4706 }
e2a0a9d6
JS		 4707 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
4708 }
4709
dea3101e
JB		 4710 if (err)
4711 goto out_host_busy_free_buf;
4712
2e0fef85 4713 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
dea3101e 4714
977b5a0a 4715 atomic_inc(&ndlp->cmd_pending);
3772a991 4716 err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
92d7f7b0 4717 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
eaf15d5b
JS		 4718 if (err) {
4719 atomic_dec(&ndlp->cmd_pending);
76f96b6d
JS		 4720 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4721 "3376 FCP could not issue IOCB err %x"
4722 "FCP cmd x%x <%d/%d> "
4723 "sid: x%x did: x%x oxid: x%x "
4724 "Data: x%x x%x x%x x%x\n",
4725 err, cmnd->cmnd[0],
4726 cmnd->device ? cmnd->device->id : 0xffff,
4727 cmnd->device ? cmnd->device->lun : 0xffff,
4728 vport->fc_myDID, ndlp->nlp_DID,
4729 phba->sli_rev == LPFC_SLI_REV4 ?
4730 lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff,
4731 lpfc_cmd->cur_iocbq.iocb.ulpContext,
4732 lpfc_cmd->cur_iocbq.iocb.ulpIoTag,
4733 lpfc_cmd->cur_iocbq.iocb.ulpTimeout,
4734 (uint32_t)
4735 (cmnd->request->timeout / 1000));
4736
4737
dea3101e 4738 goto out_host_busy_free_buf;
eaf15d5b 4739 }
875fbdfe 4740 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
45ed1190
JS		 4741 lpfc_sli_handle_fast_ring_event(phba,
4742 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
4743
875fbdfe
JSEC		 4744 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
4745 lpfc_poll_rearm_timer(phba);
4746 }
4747
dea3101e
JB		 4748 return 0;
4749
4750 out_host_busy_free_buf:
bcf4dbfa 4751 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
0bd4ca25 4752 lpfc_release_scsi_buf(phba, lpfc_cmd);
dea3101e
JB		 4753 out_host_busy:
4754 return SCSI_MLQUEUE_HOST_BUSY;
4755
3496343d
MC		 4756 out_tgt_busy:
4757 return SCSI_MLQUEUE_TARGET_BUSY;
4758
dea3101e 4759 out_fail_command:
b9a7c631 4760 cmnd->scsi_done(cmnd);
dea3101e
JB		 4761 return 0;
4762}
4763
f281233d 4764
9bad7671 4765/**
3621a710 4766 * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
9bad7671
JS		 4767 * @cmnd: Pointer to scsi_cmnd data structure.
4768 *
4769 * This routine aborts @cmnd pending in base driver.
4770 *
4771 * Return code :
4772 * 0x2003 - Error
4773 * 0x2002 - Success
4774 **/
dea3101e 4775static int
63c59c3b 4776lpfc_abort_handler(struct scsi_cmnd *cmnd)
dea3101e 4777{
2e0fef85
JS		 4778 struct Scsi_Host *shost = cmnd->device->host;
4779 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4780 struct lpfc_hba *phba = vport->phba;
0bd4ca25
JSEC		 4781 struct lpfc_iocbq *iocb;
4782 struct lpfc_iocbq *abtsiocb;
dea3101e 4783 struct lpfc_scsi_buf *lpfc_cmd;
dea3101e 4784 IOCB_t *cmd, *icmd;
3a70730a 4785 int ret = SUCCESS, status = 0;
98912dda
JS		 4786 struct lpfc_sli_ring *pring_s4;
4787 int ring_number, ret_val;
4788 unsigned long flags, iflags;
fa61a54e 4789 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
dea3101e 4790
3a70730a 4791 status = fc_block_scsi_eh(cmnd);
908e18e4 4792 if (status != 0 && status != SUCCESS)
3a70730a 4793 return status;
4f2e66c6 4794
876dd7d0 4795 spin_lock_irqsave(&phba->hbalock, flags);
4f2e66c6
JS		 4796 /* driver queued commands are in process of being flushed */
4797 if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) {
876dd7d0 4798 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6
JS		 4799 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4800 "3168 SCSI Layer abort requested I/O has been "
4801 "flushed by LLD.\n");
4802 return FAILED;
4803 }
4804
0bd4ca25 4805 lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
92e3af66 4806 if (!lpfc_cmd || !lpfc_cmd->pCmd) {
876dd7d0 4807 spin_unlock_irqrestore(&phba->hbalock, flags);
eee8877e
JS		 4808 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4809 "2873 SCSI Layer I/O Abort Request IO CMPL Status "
5cd049a5 4810 "x%x ID %d LUN %d\n",
3a70730a 4811 SUCCESS, cmnd->device->id, cmnd->device->lun);
eee8877e
JS		 4812 return SUCCESS;
4813 }
dea3101e 4814
4f2e66c6
JS		 4815 iocb = &lpfc_cmd->cur_iocbq;
4816 /* the command is in process of being cancelled */
4817 if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) {
876dd7d0 4818 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6
JS		 4819 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4820 "3169 SCSI Layer abort requested I/O has been "
4821 "cancelled by LLD.\n");
4822 return FAILED;
4823 }
0bd4ca25
JSEC		 4824 /*
4825 * If pCmd field of the corresponding lpfc_scsi_buf structure
4826 * points to a different SCSI command, then the driver has
4827 * already completed this command, but the midlayer did not
4f2e66c6 4828 * see the completion before the eh fired. Just return SUCCESS.
0bd4ca25 4829 */
4f2e66c6
JS		 4830 if (lpfc_cmd->pCmd != cmnd) {
4831 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4832 "3170 SCSI Layer abort requested I/O has been "
4833 "completed by LLD.\n");
4834 goto out_unlock;
4835 }
dea3101e 4836
0bd4ca25 4837 BUG_ON(iocb->context1 != lpfc_cmd);
dea3101e 4838
ee62021a
JS		 4839 /* abort issued in recovery is still in progress */
4840 if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) {
4841 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4842 "3389 SCSI Layer I/O Abort Request is pending\n");
4843 spin_unlock_irqrestore(&phba->hbalock, flags);
4844 goto wait_for_cmpl;
4845 }
4846
4f2e66c6 4847 abtsiocb = __lpfc_sli_get_iocbq(phba);
0bd4ca25
JSEC		 4848 if (abtsiocb == NULL) {
4849 ret = FAILED;
4f2e66c6 4850 goto out_unlock;
dea3101e
JB		 4851 }
4852
afbd8d88
JS		 4853 /* Indicate the IO is being aborted by the driver. */
4854 iocb->iocb_flag |= LPFC_DRIVER_ABORTED;
4855
dea3101e 4856 /*
0bd4ca25
JSEC		 4857 * The scsi command can not be in txq and it is in flight because the
4858 * pCmd is still pointig at the SCSI command we have to abort. There
4859 * is no need to search the txcmplq. Just send an abort to the FW.
dea3101e 4860 */
dea3101e 4861
0bd4ca25
JSEC		 4862 cmd = &iocb->iocb;
4863 icmd = &abtsiocb->iocb;
4864 icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
4865 icmd->un.acxri.abortContextTag = cmd->ulpContext;
3772a991
JS		 4866 if (phba->sli_rev == LPFC_SLI_REV4)
4867 icmd->un.acxri.abortIoTag = iocb->sli4_xritag;
4868 else
4869 icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
dea3101e 4870
0bd4ca25
JSEC		 4871 icmd->ulpLe = 1;
4872 icmd->ulpClass = cmd->ulpClass;
5ffc266e
JS		 4873
4874 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
4875 abtsiocb->fcp_wqidx = iocb->fcp_wqidx;
341af102 4876 abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX;
5ffc266e 4877
2e0fef85 4878 if (lpfc_is_link_up(phba))
0bd4ca25
JSEC		 4879 icmd->ulpCommand = CMD_ABORT_XRI_CN;
4880 else
4881 icmd->ulpCommand = CMD_CLOSE_XRI_CN;
dea3101e 4882
0bd4ca25 4883 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2e0fef85 4884 abtsiocb->vport = vport;
98912dda
JS		 4885 if (phba->sli_rev == LPFC_SLI_REV4) {
4886 ring_number = MAX_SLI3_CONFIGURED_RINGS + iocb->fcp_wqidx;
4887 pring_s4 = &phba->sli.ring[ring_number];
4888 /* Note: both hbalock and ring_lock must be set here */
4889 spin_lock_irqsave(&pring_s4->ring_lock, iflags);
4890 ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno,
4891 abtsiocb, 0);
4892 spin_unlock_irqrestore(&pring_s4->ring_lock, iflags);
4893 } else {
4894 ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING,
4895 abtsiocb, 0);
4896 }
4f2e66c6 4897 /* no longer need the lock after this point */
876dd7d0 4898 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6 4899
98912dda
JS		 4900
4901 if (ret_val == IOCB_ERROR) {
0bd4ca25
JSEC		 4902 lpfc_sli_release_iocbq(phba, abtsiocb);
4903 ret = FAILED;
4904 goto out;
4905 }
dea3101e 4906
875fbdfe 4907 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
45ed1190
JS		 4908 lpfc_sli_handle_fast_ring_event(phba,
4909 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
875fbdfe 4910
ee62021a 4911wait_for_cmpl:
fa61a54e 4912 lpfc_cmd->waitq = &waitq;
0bd4ca25 4913 /* Wait for abort to complete */
fa61a54e
JS		 4914 wait_event_timeout(waitq,
4915 (lpfc_cmd->pCmd != cmnd),
256ec0d0 4916 msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000));
ee62021a
JS		 4917
4918 spin_lock_irqsave(shost->host_lock, flags);
fa61a54e 4919 lpfc_cmd->waitq = NULL;
ee62021a 4920 spin_unlock_irqrestore(shost->host_lock, flags);
dea3101e 4921
0bd4ca25
JSEC		 4922 if (lpfc_cmd->pCmd == cmnd) {
4923 ret = FAILED;
e8b62011
JS		 4924 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
4925 "0748 abort handler timed out waiting "
247ca945
JS		 4926 "for abortng I/O (xri:x%x) to complete: "
4927 "ret %#x, ID %d, LUN %d\n",
4928 iocb->sli4_xritag, ret,
4929 cmnd->device->id, cmnd->device->lun);
dea3101e 4930 }
4f2e66c6 4931 goto out;
dea3101e 4932
4f2e66c6 4933out_unlock:
876dd7d0 4934 spin_unlock_irqrestore(&phba->hbalock, flags);
4f2e66c6 4935out:
e8b62011
JS		 4936 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
4937 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
5cd049a5
CH		 4938 "LUN %d\n", ret, cmnd->device->id,
4939 cmnd->device->lun);
63c59c3b 4940 return ret;
8fa728a2
JG		 4941}
4942
bbb9d180
JS		 4943static char *
4944lpfc_taskmgmt_name(uint8_t task_mgmt_cmd)
4945{
4946 switch (task_mgmt_cmd) {
4947 case FCP_ABORT_TASK_SET:
4948 return "ABORT_TASK_SET";
4949 case FCP_CLEAR_TASK_SET:
4950 return "FCP_CLEAR_TASK_SET";
4951 case FCP_BUS_RESET:
4952 return "FCP_BUS_RESET";
4953 case FCP_LUN_RESET:
4954 return "FCP_LUN_RESET";
4955 case FCP_TARGET_RESET:
4956 return "FCP_TARGET_RESET";
4957 case FCP_CLEAR_ACA:
4958 return "FCP_CLEAR_ACA";
4959 case FCP_TERMINATE_TASK:
4960 return "FCP_TERMINATE_TASK";
4961 default:
4962 return "unknown";
4963 }
4964}
4965
53151bbb
JS		 4966
4967/**
4968 * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed
4969 * @vport: The virtual port for which this call is being executed.
4970 * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
4971 *
4972 * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded
4973 *
4974 * Return code :
4975 * 0x2003 - Error
4976 * 0x2002 - Success
4977 **/
4978static int
4979lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd)
4980{
4981 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
4982 uint32_t rsp_info;
4983 uint32_t rsp_len;
4984 uint8_t rsp_info_code;
4985 int ret = FAILED;
4986
4987
4988 if (fcprsp == NULL)
4989 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
4990 "0703 fcp_rsp is missing\n");
4991 else {
4992 rsp_info = fcprsp->rspStatus2;
4993 rsp_len = be32_to_cpu(fcprsp->rspRspLen);
4994 rsp_info_code = fcprsp->rspInfo3;
4995
4996
4997 lpfc_printf_vlog(vport, KERN_INFO,
4998 LOG_FCP,
4999 "0706 fcp_rsp valid 0x%x,"
5000 " rsp len=%d code 0x%x\n",
5001 rsp_info,
5002 rsp_len, rsp_info_code);
5003
5004 if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) {
5005 switch (rsp_info_code) {
5006 case RSP_NO_FAILURE:
5007 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5008 "0715 Task Mgmt No Failure\n");
5009 ret = SUCCESS;
5010 break;
5011 case RSP_TM_NOT_SUPPORTED: /* TM rejected */
5012 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5013 "0716 Task Mgmt Target "
5014 "reject\n");
5015 break;
5016 case RSP_TM_NOT_COMPLETED: /* TM failed */
5017 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5018 "0717 Task Mgmt Target "
5019 "failed TM\n");
5020 break;
5021 case RSP_TM_INVALID_LU: /* TM to invalid LU! */
5022 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5023 "0718 Task Mgmt to invalid "
5024 "LUN\n");
5025 break;
5026 }
5027 }
5028 }
5029 return ret;
5030}
5031
5032
9bad7671 5033/**
bbb9d180
JS		 5034 * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler
5035 * @vport: The virtual port for which this call is being executed.
5036 * @rdata: Pointer to remote port local data
5037 * @tgt_id: Target ID of remote device.
5038 * @lun_id: Lun number for the TMF
5039 * @task_mgmt_cmd: type of TMF to send
9bad7671 5040 *
bbb9d180
JS		 5041 * This routine builds and sends a TMF (SCSI Task Mgmt Function) to
5042 * a remote port.
9bad7671 5043 *
bbb9d180
JS		 5044 * Return Code:
5045 * 0x2003 - Error
5046 * 0x2002 - Success.
9bad7671 5047 **/
dea3101e 5048static int
bbb9d180
JS		 5049lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata,
5050 unsigned tgt_id, unsigned int lun_id,
5051 uint8_t task_mgmt_cmd)
dea3101e 5052{
2e0fef85 5053 struct lpfc_hba *phba = vport->phba;
0bd4ca25 5054 struct lpfc_scsi_buf *lpfc_cmd;
bbb9d180
JS		 5055 struct lpfc_iocbq *iocbq;
5056 struct lpfc_iocbq *iocbqrsp;
5989b8d4 5057 struct lpfc_nodelist *pnode = rdata->pnode;
bbb9d180 5058 int ret;
915caaaf 5059 int status;
dea3101e 5060
5989b8d4 5061 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
915caaaf 5062 return FAILED;
bbb9d180 5063
19ca7609 5064 lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode);
dea3101e 5065 if (lpfc_cmd == NULL)
915caaaf 5066 return FAILED;
0c411222 5067 lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo;
0b18ac42 5068 lpfc_cmd->rdata = rdata;
dea3101e 5069
bbb9d180
JS		 5070 status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id,
5071 task_mgmt_cmd);
915caaaf
JS		 5072 if (!status) {
5073 lpfc_release_scsi_buf(phba, lpfc_cmd);
5074 return FAILED;
5075 }
dea3101e 5076
bbb9d180 5077 iocbq = &lpfc_cmd->cur_iocbq;
0bd4ca25 5078 iocbqrsp = lpfc_sli_get_iocbq(phba);
915caaaf
JS		 5079 if (iocbqrsp == NULL) {
5080 lpfc_release_scsi_buf(phba, lpfc_cmd);
5081 return FAILED;
5082 }
5a0916b4 5083 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
bbb9d180 5084
e8b62011 5085 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
bbb9d180 5086 "0702 Issue %s to TGT %d LUN %d "
6d368e53 5087 "rpi x%x nlp_flag x%x Data: x%x x%x\n",
bbb9d180 5088 lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id,
6d368e53
JS		 5089 pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag,
5090 iocbq->iocb_flag);
bbb9d180 5091
3772a991 5092 status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING,
915caaaf 5093 iocbq, iocbqrsp, lpfc_cmd->timeout);
53151bbb
JS		 5094 if ((status != IOCB_SUCCESS) ||
5095 (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) {
bbb9d180 5096 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
6d368e53
JS		 5097 "0727 TMF %s to TGT %d LUN %d failed (%d, %d) "
5098 "iocb_flag x%x\n",
bbb9d180
JS		 5099 lpfc_taskmgmt_name(task_mgmt_cmd),
5100 tgt_id, lun_id, iocbqrsp->iocb.ulpStatus,
6d368e53
JS		 5101 iocbqrsp->iocb.un.ulpWord[4],
5102 iocbq->iocb_flag);
53151bbb
JS		 5103 /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */
5104 if (status == IOCB_SUCCESS) {
5105 if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
5106 /* Something in the FCP_RSP was invalid.
5107 * Check conditions */
5108 ret = lpfc_check_fcp_rsp(vport, lpfc_cmd);
5109 else
5110 ret = FAILED;
5111 } else if (status == IOCB_TIMEDOUT) {
5112 ret = TIMEOUT_ERROR;
5113 } else {
5114 ret = FAILED;
5115 }
5116 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
5117 } else
bbb9d180
JS		 5118 ret = SUCCESS;
5119
6175c02a 5120 lpfc_sli_release_iocbq(phba, iocbqrsp);
bbb9d180
JS		 5121
5122 if (ret != TIMEOUT_ERROR)
5123 lpfc_release_scsi_buf(phba, lpfc_cmd);
5124
5125 return ret;
5126}
5127
5128/**
5129 * lpfc_chk_tgt_mapped -
5130 * @vport: The virtual port to check on
5131 * @cmnd: Pointer to scsi_cmnd data structure.
5132 *
5133 * This routine delays until the scsi target (aka rport) for the
5134 * command exists (is present and logged in) or we declare it non-existent.
5135 *
5136 * Return code :
5137 * 0x2003 - Error
5138 * 0x2002 - Success
5139 **/
5140static int
5141lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd)
5142{
1ba981fd 5143 struct lpfc_rport_data *rdata;
1c6f4ef5 5144 struct lpfc_nodelist *pnode;
bbb9d180
JS		 5145 unsigned long later;
5146
1ba981fd 5147 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
1c6f4ef5
JS		 5148 if (!rdata) {
5149 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
5150 "0797 Tgt Map rport failure: rdata x%p\n", rdata);
5151 return FAILED;
5152 }
5153 pnode = rdata->pnode;
bbb9d180
JS		 5154 /*
5155 * If target is not in a MAPPED state, delay until
5156 * target is rediscovered or devloss timeout expires.
5157 */
5158 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5159 while (time_after(later, jiffies)) {
5160 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
5161 return FAILED;
5162 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
5163 return SUCCESS;
5164 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
1ba981fd 5165 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
bbb9d180
JS		 5166 if (!rdata)
5167 return FAILED;
5168 pnode = rdata->pnode;
5169 }
5170 if (!pnode || !NLP_CHK_NODE_ACT(pnode) ||
5171 (pnode->nlp_state != NLP_STE_MAPPED_NODE))
5172 return FAILED;
5173 return SUCCESS;
5174}
5175
5176/**
5177 * lpfc_reset_flush_io_context -
5178 * @vport: The virtual port (scsi_host) for the flush context
5179 * @tgt_id: If aborting by Target contect - specifies the target id
5180 * @lun_id: If aborting by Lun context - specifies the lun id
5181 * @context: specifies the context level to flush at.
5182 *
5183 * After a reset condition via TMF, we need to flush orphaned i/o
5184 * contexts from the adapter. This routine aborts any contexts
5185 * outstanding, then waits for their completions. The wait is
5186 * bounded by devloss_tmo though.
5187 *
5188 * Return code :
5189 * 0x2003 - Error
5190 * 0x2002 - Success
5191 **/
5192static int
5193lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id,
5194 uint64_t lun_id, lpfc_ctx_cmd context)
5195{
5196 struct lpfc_hba *phba = vport->phba;
5197 unsigned long later;
5198 int cnt;
5199
5200 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
6175c02a 5201 if (cnt)
98912dda
JS		 5202 lpfc_sli_abort_taskmgmt(vport,
5203 &phba->sli.ring[phba->sli.fcp_ring],
5204 tgt_id, lun_id, context);
915caaaf
JS		 5205 later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies;
5206 while (time_after(later, jiffies) && cnt) {
5207 schedule_timeout_uninterruptible(msecs_to_jiffies(20));
bbb9d180 5208 cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context);
dea3101e 5209 }
dea3101e 5210 if (cnt) {
e8b62011 5211 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
bbb9d180
JS		 5212 "0724 I/O flush failure for context %s : cnt x%x\n",
5213 ((context == LPFC_CTX_LUN) ? "LUN" :
5214 ((context == LPFC_CTX_TGT) ? "TGT" :
5215 ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))),
5216 cnt);
5217 return FAILED;
dea3101e 5218 }
bbb9d180
JS		 5219 return SUCCESS;
5220}
5221
5222/**
5223 * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
5224 * @cmnd: Pointer to scsi_cmnd data structure.
5225 *
5226 * This routine does a device reset by sending a LUN_RESET task management
5227 * command.
5228 *
5229 * Return code :
5230 * 0x2003 - Error
5231 * 0x2002 - Success
5232 **/
5233static int
5234lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
5235{
5236 struct Scsi_Host *shost = cmnd->device->host;
5237 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1ba981fd 5238 struct lpfc_rport_data *rdata;
1c6f4ef5 5239 struct lpfc_nodelist *pnode;
bbb9d180
JS		 5240 unsigned tgt_id = cmnd->device->id;
5241 unsigned int lun_id = cmnd->device->lun;
5242 struct lpfc_scsi_event_header scsi_event;
53151bbb 5243 int status;
bbb9d180 5244
1ba981fd 5245 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
1c6f4ef5
JS		 5246 if (!rdata) {
5247 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5248 "0798 Device Reset rport failure: rdata x%p\n", rdata);
5249 return FAILED;
5250 }
5251 pnode = rdata->pnode;
589a52d6 5252 status = fc_block_scsi_eh(cmnd);
908e18e4 5253 if (status != 0 && status != SUCCESS)
589a52d6 5254 return status;
bbb9d180
JS		 5255
5256 status = lpfc_chk_tgt_mapped(vport, cmnd);
5257 if (status == FAILED) {
5258 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5259 "0721 Device Reset rport failure: rdata x%p\n", rdata);
5260 return FAILED;
5261 }
5262
5263 scsi_event.event_type = FC_REG_SCSI_EVENT;
5264 scsi_event.subcategory = LPFC_EVENT_LUNRESET;
5265 scsi_event.lun = lun_id;
5266 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5267 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5268
5269 fc_host_post_vendor_event(shost, fc_get_event_number(),
5270 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5271
5272 status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
5273 FCP_LUN_RESET);
5274
5275 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5276 "0713 SCSI layer issued Device Reset (%d, %d) "
5277 "return x%x\n", tgt_id, lun_id, status);
5278
5279 /*
5280 * We have to clean up i/o as : they may be orphaned by the TMF;
5281 * or if the TMF failed, they may be in an indeterminate state.
5282 * So, continue on.
5283 * We will report success if all the i/o aborts successfully.
5284 */
53151bbb
JS		 5285 if (status == SUCCESS)
5286 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
bbb9d180 5287 LPFC_CTX_LUN);
53151bbb
JS		 5288
5289 return status;
bbb9d180
JS		 5290}
5291
5292/**
5293 * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point
5294 * @cmnd: Pointer to scsi_cmnd data structure.
5295 *
5296 * This routine does a target reset by sending a TARGET_RESET task management
5297 * command.
5298 *
5299 * Return code :
5300 * 0x2003 - Error
5301 * 0x2002 - Success
5302 **/
5303static int
5304lpfc_target_reset_handler(struct scsi_cmnd *cmnd)
5305{
5306 struct Scsi_Host *shost = cmnd->device->host;
5307 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1ba981fd 5308 struct lpfc_rport_data *rdata;
1c6f4ef5 5309 struct lpfc_nodelist *pnode;
bbb9d180
JS		 5310 unsigned tgt_id = cmnd->device->id;
5311 unsigned int lun_id = cmnd->device->lun;
5312 struct lpfc_scsi_event_header scsi_event;
53151bbb 5313 int status;
bbb9d180 5314
1ba981fd 5315 rdata = lpfc_rport_data_from_scsi_device(cmnd->device);
1c6f4ef5
JS		 5316 if (!rdata) {
5317 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5318 "0799 Target Reset rport failure: rdata x%p\n", rdata);
5319 return FAILED;
5320 }
5321 pnode = rdata->pnode;
589a52d6 5322 status = fc_block_scsi_eh(cmnd);
908e18e4 5323 if (status != 0 && status != SUCCESS)
589a52d6 5324 return status;
bbb9d180
JS		 5325
5326 status = lpfc_chk_tgt_mapped(vport, cmnd);
5327 if (status == FAILED) {
5328 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5329 "0722 Target Reset rport failure: rdata x%p\n", rdata);
5330 return FAILED;
5331 }
5332
5333 scsi_event.event_type = FC_REG_SCSI_EVENT;
5334 scsi_event.subcategory = LPFC_EVENT_TGTRESET;
5335 scsi_event.lun = 0;
5336 memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name));
5337 memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name));
5338
5339 fc_host_post_vendor_event(shost, fc_get_event_number(),
5340 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
5341
5342 status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id,
5343 FCP_TARGET_RESET);
5344
5345 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5346 "0723 SCSI layer issued Target Reset (%d, %d) "
5347 "return x%x\n", tgt_id, lun_id, status);
5348
5349 /*
5350 * We have to clean up i/o as : they may be orphaned by the TMF;
5351 * or if the TMF failed, they may be in an indeterminate state.
5352 * So, continue on.
5353 * We will report success if all the i/o aborts successfully.
5354 */
53151bbb
JS		 5355 if (status == SUCCESS)
5356 status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id,
3a70730a 5357 LPFC_CTX_TGT);
53151bbb 5358 return status;
dea3101e
JB		 5359}
5360
9bad7671 5361/**
3621a710 5362 * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
9bad7671
JS		 5363 * @cmnd: Pointer to scsi_cmnd data structure.
5364 *
bbb9d180
JS		 5365 * This routine does target reset to all targets on @cmnd->device->host.
5366 * This emulates Parallel SCSI Bus Reset Semantics.
9bad7671 5367 *
bbb9d180
JS		 5368 * Return code :
5369 * 0x2003 - Error
5370 * 0x2002 - Success
9bad7671 5371 **/
94d0e7b8 5372static int
7054a606 5373lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
dea3101e 5374{
2e0fef85
JS		 5375 struct Scsi_Host *shost = cmnd->device->host;
5376 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
dea3101e 5377 struct lpfc_nodelist *ndlp = NULL;
ea2151b4 5378 struct lpfc_scsi_event_header scsi_event;
bbb9d180
JS		 5379 int match;
5380 int ret = SUCCESS, status, i;
ea2151b4
JS		 5381
5382 scsi_event.event_type = FC_REG_SCSI_EVENT;
5383 scsi_event.subcategory = LPFC_EVENT_BUSRESET;
5384 scsi_event.lun = 0;
5385 memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
5386 memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
5387
bbb9d180
JS		 5388 fc_host_post_vendor_event(shost, fc_get_event_number(),
5389 sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
dea3101e 5390
bf08611b 5391 status = fc_block_scsi_eh(cmnd);
908e18e4 5392 if (status != 0 && status != SUCCESS)
bf08611b 5393 return status;
bbb9d180 5394
dea3101e
JB		 5395 /*
5396 * Since the driver manages a single bus device, reset all
5397 * targets known to the driver. Should any target reset
5398 * fail, this routine returns failure to the midlayer.
5399 */
e17da18e 5400 for (i = 0; i < LPFC_MAX_TARGET; i++) {
685f0bf7 5401 /* Search for mapped node by target ID */
dea3101e 5402 match = 0;
2e0fef85
JS		 5403 spin_lock_irq(shost->host_lock);
5404 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
e47c9093
JS		 5405 if (!NLP_CHK_NODE_ACT(ndlp))
5406 continue;
a6571c6e
JS		 5407 if (vport->phba->cfg_fcp2_no_tgt_reset &&
5408 (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
5409 continue;
685f0bf7 5410 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
915caaaf 5411 ndlp->nlp_sid == i &&
685f0bf7 5412 ndlp->rport) {
dea3101e
JB		 5413 match = 1;
5414 break;
5415 }
5416 }
2e0fef85 5417 spin_unlock_irq(shost->host_lock);
dea3101e
JB		 5418 if (!match)
5419 continue;
bbb9d180
JS		 5420
5421 status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data,
5422 i, 0, FCP_TARGET_RESET);
5423
5424 if (status != SUCCESS) {
e8b62011
JS		 5425 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5426 "0700 Bus Reset on target %d failed\n",
5427 i);
915caaaf 5428 ret = FAILED;
dea3101e
JB		 5429 }
5430 }
6175c02a 5431 /*
bbb9d180
JS		 5432 * We have to clean up i/o as : they may be orphaned by the TMFs
5433 * above; or if any of the TMFs failed, they may be in an
5434 * indeterminate state.
5435 * We will report success if all the i/o aborts successfully.
6175c02a 5436 */
bbb9d180
JS		 5437
5438 status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
5439 if (status != SUCCESS)
0bd4ca25 5440 ret = FAILED;
bbb9d180 5441
e8b62011
JS		 5442 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5443 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
dea3101e
JB		 5444 return ret;
5445}
5446
27b01b82
JS		 5447/**
5448 * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
5449 * @cmnd: Pointer to scsi_cmnd data structure.
5450 *
5451 * This routine does host reset to the adaptor port. It brings the HBA
5452 * offline, performs a board restart, and then brings the board back online.
5453 * The lpfc_offline calls lpfc_sli_hba_down which will abort and local
5454 * reject all outstanding SCSI commands to the host and error returned
5455 * back to SCSI mid-level. As this will be SCSI mid-level's last resort
5456 * of error handling, it will only return error if resetting of the adapter
5457 * is not successful; in all other cases, will return success.
5458 *
5459 * Return code :
5460 * 0x2003 - Error
5461 * 0x2002 - Success
5462 **/
5463static int
5464lpfc_host_reset_handler(struct scsi_cmnd *cmnd)
5465{
5466 struct Scsi_Host *shost = cmnd->device->host;
5467 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5468 struct lpfc_hba *phba = vport->phba;
5469 int rc, ret = SUCCESS;
5470
a88dbb6a
JS		 5471 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5472 "3172 SCSI layer issued Host Reset Data:\n");
5473
618a5230 5474 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
27b01b82
JS		 5475 lpfc_offline(phba);
5476 rc = lpfc_sli_brdrestart(phba);
5477 if (rc)
5478 ret = FAILED;
a88dbb6a
JS		 5479 rc = lpfc_online(phba);
5480 if (rc)
5481 ret = FAILED;
27b01b82
JS		 5482 lpfc_unblock_mgmt_io(phba);
5483
a88dbb6a
JS		 5484 if (ret == FAILED) {
5485 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5486 "3323 Failed host reset, bring it offline\n");
5487 lpfc_sli4_offline_eratt(phba);
5488 }
27b01b82
JS		 5489 return ret;
5490}
5491
9bad7671 5492/**
3621a710 5493 * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
9bad7671
JS		 5494 * @sdev: Pointer to scsi_device.
5495 *
5496 * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
5497 * globally available list of scsi buffers. This routine also makes sure scsi
5498 * buffer is not allocated more than HBA limit conveyed to midlayer. This list
5499 * of scsi buffer exists for the lifetime of the driver.
5500 *
5501 * Return codes:
5502 * non-0 - Error
5503 * 0 - Success
5504 **/
dea3101e
JB		 5505static int
5506lpfc_slave_alloc(struct scsi_device *sdev)
5507{
2e0fef85
JS		 5508 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5509 struct lpfc_hba *phba = vport->phba;
19a7b4ae 5510 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
3772a991 5511 uint32_t total = 0;
dea3101e 5512 uint32_t num_to_alloc = 0;
3772a991 5513 int num_allocated = 0;
d7c47992 5514 uint32_t sdev_cnt;
1ba981fd
JS		 5515 struct lpfc_device_data *device_data;
5516 unsigned long flags;
5517 struct lpfc_name target_wwpn;
dea3101e 5518
19a7b4ae 5519 if (!rport || fc_remote_port_chkready(rport))
dea3101e
JB		 5520 return -ENXIO;
5521
f38fa0bb 5522 if (phba->cfg_fof) {
1ba981fd
JS		 5523
5524 /*
5525 * Check to see if the device data structure for the lun
5526 * exists. If not, create one.
5527 */
5528
5529 u64_to_wwn(rport->port_name, target_wwpn.u.wwn);
5530 spin_lock_irqsave(&phba->devicelock, flags);
5531 device_data = __lpfc_get_device_data(phba,
5532 &phba->luns,
5533 &vport->fc_portname,
5534 &target_wwpn,
5535 sdev->lun);
5536 if (!device_data) {
5537 spin_unlock_irqrestore(&phba->devicelock, flags);
5538 device_data = lpfc_create_device_data(phba,
5539 &vport->fc_portname,
5540 &target_wwpn,
5541 sdev->lun, true);
5542 if (!device_data)
5543 return -ENOMEM;
5544 spin_lock_irqsave(&phba->devicelock, flags);
5545 list_add_tail(&device_data->listentry, &phba->luns);
5546 }
5547 device_data->rport_data = rport->dd_data;
5548 device_data->available = true;
5549 spin_unlock_irqrestore(&phba->devicelock, flags);
5550 sdev->hostdata = device_data;
5551 } else {
5552 sdev->hostdata = rport->dd_data;
5553 }
d7c47992 5554 sdev_cnt = atomic_inc_return(&phba->sdev_cnt);
dea3101e
JB		 5555
5556 /*
5557 * Populate the cmds_per_lun count scsi_bufs into this host's globally
5558 * available list of scsi buffers. Don't allocate more than the
a784efbf
JSEC		 5559 * HBA limit conveyed to the midlayer via the host structure. The
5560 * formula accounts for the lun_queue_depth + error handlers + 1
5561 * extra. This list of scsi bufs exists for the lifetime of the driver.
dea3101e
JB		 5562 */
5563 total = phba->total_scsi_bufs;
3de2a653 5564 num_to_alloc = vport->cfg_lun_queue_depth + 2;
92d7f7b0 5565
d7c47992
JS		 5566 /* If allocated buffers are enough do nothing */
5567 if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total)
5568 return 0;
5569
92d7f7b0
JS		 5570 /* Allow some exchanges to be available always to complete discovery */
5571 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
e8b62011
JS		 5572 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5573 "0704 At limitation of %d preallocated "
5574 "command buffers\n", total);
dea3101e 5575 return 0;
92d7f7b0
JS		 5576 /* Allow some exchanges to be available always to complete discovery */
5577 } else if (total + num_to_alloc >
5578 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
e8b62011
JS		 5579 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
5580 "0705 Allocation request of %d "
5581 "command buffers will exceed max of %d. "
5582 "Reducing allocation request to %d.\n",
5583 num_to_alloc, phba->cfg_hba_queue_depth,
5584 (phba->cfg_hba_queue_depth - total));
dea3101e
JB		 5585 num_to_alloc = phba->cfg_hba_queue_depth - total;
5586 }
3772a991
JS		 5587 num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc);
5588 if (num_to_alloc != num_allocated) {
96f7077f
JS		 5589 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
5590 "0708 Allocation request of %d "
5591 "command buffers did not succeed. "
5592 "Allocated %d buffers.\n",
5593 num_to_alloc, num_allocated);
dea3101e 5594 }
1c6f4ef5
JS		 5595 if (num_allocated > 0)
5596 phba->total_scsi_bufs += num_allocated;
dea3101e
JB		 5597 return 0;
5598}
5599
9bad7671 5600/**
3621a710 5601 * lpfc_slave_configure - scsi_host_template slave_configure entry point
9bad7671
JS		 5602 * @sdev: Pointer to scsi_device.
5603 *
5604 * This routine configures following items
5605 * - Tag command queuing support for @sdev if supported.
9bad7671
JS		 5606 * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set.
5607 *
5608 * Return codes:
5609 * 0 - Success
5610 **/
dea3101e
JB		 5611static int
5612lpfc_slave_configure(struct scsi_device *sdev)
5613{
2e0fef85
JS		 5614 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5615 struct lpfc_hba *phba = vport->phba;
dea3101e
JB		 5616
5617 if (sdev->tagged_supported)
3de2a653 5618 scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth);
dea3101e 5619 else
3de2a653 5620 scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth);
dea3101e 5621
875fbdfe 5622 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
45ed1190
JS		 5623 lpfc_sli_handle_fast_ring_event(phba,
5624 &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ);
875fbdfe
JSEC		 5625 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
5626 lpfc_poll_rearm_timer(phba);
5627 }
5628
dea3101e
JB		 5629 return 0;
5630}
5631
9bad7671 5632/**
3621a710 5633 * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
9bad7671
JS		 5634 * @sdev: Pointer to scsi_device.
5635 *
5636 * This routine sets @sdev hostatdata filed to null.
5637 **/
dea3101e
JB		 5638static void
5639lpfc_slave_destroy(struct scsi_device *sdev)
5640{
d7c47992
JS		 5641 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
5642 struct lpfc_hba *phba = vport->phba;
1ba981fd
JS		 5643 unsigned long flags;
5644 struct lpfc_device_data *device_data = sdev->hostdata;
5645
d7c47992 5646 atomic_dec(&phba->sdev_cnt);
f38fa0bb 5647 if ((phba->cfg_fof) && (device_data)) {
1ba981fd
JS		 5648 spin_lock_irqsave(&phba->devicelock, flags);
5649 device_data->available = false;
5650 if (!device_data->oas_enabled)
5651 lpfc_delete_device_data(phba, device_data);
5652 spin_unlock_irqrestore(&phba->devicelock, flags);
5653 }
dea3101e
JB		 5654 sdev->hostdata = NULL;
5655 return;
5656}
5657
1ba981fd
JS		 5658/**
5659 * lpfc_create_device_data - creates and initializes device data structure for OAS
5660 * @pha: Pointer to host bus adapter structure.
5661 * @vport_wwpn: Pointer to vport's wwpn information
5662 * @target_wwpn: Pointer to target's wwpn information
5663 * @lun: Lun on target
5664 * @atomic_create: Flag to indicate if memory should be allocated using the
5665 * GFP_ATOMIC flag or not.
5666 *
5667 * This routine creates a device data structure which will contain identifying
5668 * information for the device (host wwpn, target wwpn, lun), state of OAS,
5669 * whether or not the corresponding lun is available by the system,
5670 * and pointer to the rport data.
5671 *
5672 * Return codes:
5673 * NULL - Error
5674 * Pointer to lpfc_device_data - Success
5675 **/
5676struct lpfc_device_data*
5677lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5678 struct lpfc_name *target_wwpn, uint64_t lun,
5679 bool atomic_create)
5680{
5681
5682 struct lpfc_device_data *lun_info;
5683 int memory_flags;
5684
5685 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
f38fa0bb 5686 !(phba->cfg_fof))
1ba981fd
JS		 5687 return NULL;
5688
5689 /* Attempt to create the device data to contain lun info */
5690
5691 if (atomic_create)
5692 memory_flags = GFP_ATOMIC;
5693 else
5694 memory_flags = GFP_KERNEL;
5695 lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags);
5696 if (!lun_info)
5697 return NULL;
5698 INIT_LIST_HEAD(&lun_info->listentry);
5699 lun_info->rport_data = NULL;
5700 memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn,
5701 sizeof(struct lpfc_name));
5702 memcpy(&lun_info->device_id.target_wwpn, target_wwpn,
5703 sizeof(struct lpfc_name));
5704 lun_info->device_id.lun = lun;
5705 lun_info->oas_enabled = false;
5706 lun_info->available = false;
5707 return lun_info;
5708}
5709
5710/**
5711 * lpfc_delete_device_data - frees a device data structure for OAS
5712 * @pha: Pointer to host bus adapter structure.
5713 * @lun_info: Pointer to device data structure to free.
5714 *
5715 * This routine frees the previously allocated device data structure passed.
5716 *
5717 **/
5718void
5719lpfc_delete_device_data(struct lpfc_hba *phba,
5720 struct lpfc_device_data *lun_info)
5721{
5722
5723 if (unlikely(!phba) || !lun_info ||
f38fa0bb 5724 !(phba->cfg_fof))
1ba981fd
JS		 5725 return;
5726
5727 if (!list_empty(&lun_info->listentry))
5728 list_del(&lun_info->listentry);
5729 mempool_free(lun_info, phba->device_data_mem_pool);
5730 return;
5731}
5732
5733/**
5734 * __lpfc_get_device_data - returns the device data for the specified lun
5735 * @pha: Pointer to host bus adapter structure.
5736 * @list: Point to list to search.
5737 * @vport_wwpn: Pointer to vport's wwpn information
5738 * @target_wwpn: Pointer to target's wwpn information
5739 * @lun: Lun on target
5740 *
5741 * This routine searches the list passed for the specified lun's device data.
5742 * This function does not hold locks, it is the responsibility of the caller
5743 * to ensure the proper lock is held before calling the function.
5744 *
5745 * Return codes:
5746 * NULL - Error
5747 * Pointer to lpfc_device_data - Success
5748 **/
5749struct lpfc_device_data*
5750__lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list,
5751 struct lpfc_name *vport_wwpn,
5752 struct lpfc_name *target_wwpn, uint64_t lun)
5753{
5754
5755 struct lpfc_device_data *lun_info;
5756
5757 if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn ||
f38fa0bb 5758 !phba->cfg_fof)
1ba981fd
JS		 5759 return NULL;
5760
5761 /* Check to see if the lun is already enabled for OAS. */
5762
5763 list_for_each_entry(lun_info, list, listentry) {
5764 if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5765 sizeof(struct lpfc_name)) == 0) &&
5766 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5767 sizeof(struct lpfc_name)) == 0) &&
5768 (lun_info->device_id.lun == lun))
5769 return lun_info;
5770 }
5771
5772 return NULL;
5773}
5774
5775/**
5776 * lpfc_find_next_oas_lun - searches for the next oas lun
5777 * @pha: Pointer to host bus adapter structure.
5778 * @vport_wwpn: Pointer to vport's wwpn information
5779 * @target_wwpn: Pointer to target's wwpn information
5780 * @starting_lun: Pointer to the lun to start searching for
5781 * @found_vport_wwpn: Pointer to the found lun's vport wwpn information
5782 * @found_target_wwpn: Pointer to the found lun's target wwpn information
5783 * @found_lun: Pointer to the found lun.
5784 * @found_lun_status: Pointer to status of the found lun.
5785 *
5786 * This routine searches the luns list for the specified lun
5787 * or the first lun for the vport/target. If the vport wwpn contains
5788 * a zero value then a specific vport is not specified. In this case
5789 * any vport which contains the lun will be considered a match. If the
5790 * target wwpn contains a zero value then a specific target is not specified.
5791 * In this case any target which contains the lun will be considered a
5792 * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status
5793 * are returned. The function will also return the next lun if available.
5794 * If the next lun is not found, starting_lun parameter will be set to
5795 * NO_MORE_OAS_LUN.
5796 *
5797 * Return codes:
5798 * non-0 - Error
5799 * 0 - Success
5800 **/
5801bool
5802lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5803 struct lpfc_name *target_wwpn, uint64_t *starting_lun,
5804 struct lpfc_name *found_vport_wwpn,
5805 struct lpfc_name *found_target_wwpn,
5806 uint64_t *found_lun,
5807 uint32_t *found_lun_status)
5808{
5809
5810 unsigned long flags;
5811 struct lpfc_device_data *lun_info;
5812 struct lpfc_device_id *device_id;
5813 uint64_t lun;
5814 bool found = false;
5815
5816 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
5817 !starting_lun || !found_vport_wwpn ||
5818 !found_target_wwpn || !found_lun || !found_lun_status ||
5819 (*starting_lun == NO_MORE_OAS_LUN) ||
f38fa0bb 5820 !phba->cfg_fof)
1ba981fd
JS		 5821 return false;
5822
5823 lun = *starting_lun;
5824 *found_lun = NO_MORE_OAS_LUN;
5825 *starting_lun = NO_MORE_OAS_LUN;
5826
5827 /* Search for lun or the lun closet in value */
5828
5829 spin_lock_irqsave(&phba->devicelock, flags);
5830 list_for_each_entry(lun_info, &phba->luns, listentry) {
5831 if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) ||
5832 (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn,
5833 sizeof(struct lpfc_name)) == 0)) &&
5834 ((wwn_to_u64(target_wwpn->u.wwn) == 0) ||
5835 (memcmp(&lun_info->device_id.target_wwpn, target_wwpn,
5836 sizeof(struct lpfc_name)) == 0)) &&
5837 (lun_info->oas_enabled)) {
5838 device_id = &lun_info->device_id;
5839 if ((!found) &&
5840 ((lun == FIND_FIRST_OAS_LUN) ||
5841 (device_id->lun == lun))) {
5842 *found_lun = device_id->lun;
5843 memcpy(found_vport_wwpn,
5844 &device_id->vport_wwpn,
5845 sizeof(struct lpfc_name));
5846 memcpy(found_target_wwpn,
5847 &device_id->target_wwpn,
5848 sizeof(struct lpfc_name));
5849 if (lun_info->available)
5850 *found_lun_status =
5851 OAS_LUN_STATUS_EXISTS;
5852 else
5853 *found_lun_status = 0;
5854 if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT)
5855 memset(vport_wwpn, 0x0,
5856 sizeof(struct lpfc_name));
5857 if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET)
5858 memset(target_wwpn, 0x0,
5859 sizeof(struct lpfc_name));
5860 found = true;
5861 } else if (found) {
5862 *starting_lun = device_id->lun;
5863 memcpy(vport_wwpn, &device_id->vport_wwpn,
5864 sizeof(struct lpfc_name));
5865 memcpy(target_wwpn, &device_id->target_wwpn,
5866 sizeof(struct lpfc_name));
5867 break;
5868 }
5869 }
5870 }
5871 spin_unlock_irqrestore(&phba->devicelock, flags);
5872 return found;
5873}
5874
5875/**
5876 * lpfc_enable_oas_lun - enables a lun for OAS operations
5877 * @pha: Pointer to host bus adapter structure.
5878 * @vport_wwpn: Pointer to vport's wwpn information
5879 * @target_wwpn: Pointer to target's wwpn information
5880 * @lun: Lun
5881 *
5882 * This routine enables a lun for oas operations. The routines does so by
5883 * doing the following :
5884 *
5885 * 1) Checks to see if the device data for the lun has been created.
5886 * 2) If found, sets the OAS enabled flag if not set and returns.
5887 * 3) Otherwise, creates a device data structure.
5888 * 4) If successfully created, indicates the device data is for an OAS lun,
5889 * indicates the lun is not available and add to the list of luns.
5890 *
5891 * Return codes:
5892 * false - Error
5893 * true - Success
5894 **/
5895bool
5896lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5897 struct lpfc_name *target_wwpn, uint64_t lun)
5898{
5899
5900 struct lpfc_device_data *lun_info;
5901 unsigned long flags;
5902
5903 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
f38fa0bb 5904 !phba->cfg_fof)
1ba981fd
JS		 5905 return false;
5906
5907 spin_lock_irqsave(&phba->devicelock, flags);
5908
5909 /* Check to see if the device data for the lun has been created */
5910 lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn,
5911 target_wwpn, lun);
5912 if (lun_info) {
5913 if (!lun_info->oas_enabled)
5914 lun_info->oas_enabled = true;
5915 spin_unlock_irqrestore(&phba->devicelock, flags);
5916 return true;
5917 }
5918
5919 /* Create an lun info structure and add to list of luns */
5920 lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun,
5921 false);
5922 if (lun_info) {
5923 lun_info->oas_enabled = true;
5924 lun_info->available = false;
5925 list_add_tail(&lun_info->listentry, &phba->luns);
5926 spin_unlock_irqrestore(&phba->devicelock, flags);
5927 return true;
5928 }
5929 spin_unlock_irqrestore(&phba->devicelock, flags);
5930 return false;
5931}
5932
5933/**
5934 * lpfc_disable_oas_lun - disables a lun for OAS operations
5935 * @pha: Pointer to host bus adapter structure.
5936 * @vport_wwpn: Pointer to vport's wwpn information
5937 * @target_wwpn: Pointer to target's wwpn information
5938 * @lun: Lun
5939 *
5940 * This routine disables a lun for oas operations. The routines does so by
5941 * doing the following :
5942 *
5943 * 1) Checks to see if the device data for the lun is created.
5944 * 2) If present, clears the flag indicating this lun is for OAS.
5945 * 3) If the lun is not available by the system, the device data is
5946 * freed.
5947 *
5948 * Return codes:
5949 * false - Error
5950 * true - Success
5951 **/
5952bool
5953lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn,
5954 struct lpfc_name *target_wwpn, uint64_t lun)
5955{
5956
5957 struct lpfc_device_data *lun_info;
5958 unsigned long flags;
5959
5960 if (unlikely(!phba) || !vport_wwpn || !target_wwpn ||
f38fa0bb 5961 !phba->cfg_fof)
1ba981fd
JS		 5962 return false;
5963
5964 spin_lock_irqsave(&phba->devicelock, flags);
5965
5966 /* Check to see if the lun is available. */
5967 lun_info = __lpfc_get_device_data(phba,
5968 &phba->luns, vport_wwpn,
5969 target_wwpn, lun);
5970 if (lun_info) {
5971 lun_info->oas_enabled = false;
5972 if (!lun_info->available)
5973 lpfc_delete_device_data(phba, lun_info);
5974 spin_unlock_irqrestore(&phba->devicelock, flags);
5975 return true;
5976 }
5977
5978 spin_unlock_irqrestore(&phba->devicelock, flags);
5979 return false;
5980}
92d7f7b0 5981
dea3101e
JB		 5982struct scsi_host_template lpfc_template = {
5983 .module = THIS_MODULE,
5984 .name = LPFC_DRIVER_NAME,
5985 .info = lpfc_info,
5986 .queuecommand = lpfc_queuecommand,
5987 .eh_abort_handler = lpfc_abort_handler,
bbb9d180
JS		 5988 .eh_device_reset_handler = lpfc_device_reset_handler,
5989 .eh_target_reset_handler = lpfc_target_reset_handler,
7054a606 5990 .eh_bus_reset_handler = lpfc_bus_reset_handler,
27b01b82 5991 .eh_host_reset_handler = lpfc_host_reset_handler,
dea3101e
JB		 5992 .slave_alloc = lpfc_slave_alloc,
5993 .slave_configure = lpfc_slave_configure,
5994 .slave_destroy = lpfc_slave_destroy,
47a8617c 5995 .scan_finished = lpfc_scan_finished,
dea3101e 5996 .this_id = -1,
83108bd3 5997 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
dea3101e
JB		 5998 .cmd_per_lun = LPFC_CMD_PER_LUN,
5999 .use_clustering = ENABLE_CLUSTERING,
2e0fef85 6000 .shost_attrs = lpfc_hba_attrs,
564b2960 6001 .max_sectors = 0xFFFF,
f1c3b0fc 6002 .vendor_id = LPFC_NL_VENDOR_ID,
5ffc266e 6003 .change_queue_depth = lpfc_change_queue_depth,
fe8f7f9c 6004 .change_queue_type = lpfc_change_queue_type,
dea3101e 6005};
3de2a653
JS		 6006
6007struct scsi_host_template lpfc_vport_template = {
6008 .module = THIS_MODULE,
6009 .name = LPFC_DRIVER_NAME,
6010 .info = lpfc_info,
6011 .queuecommand = lpfc_queuecommand,
6012 .eh_abort_handler = lpfc_abort_handler,
bbb9d180
JS		 6013 .eh_device_reset_handler = lpfc_device_reset_handler,
6014 .eh_target_reset_handler = lpfc_target_reset_handler,
3de2a653
JS		 6015 .eh_bus_reset_handler = lpfc_bus_reset_handler,
6016 .slave_alloc = lpfc_slave_alloc,
6017 .slave_configure = lpfc_slave_configure,
6018 .slave_destroy = lpfc_slave_destroy,
6019 .scan_finished = lpfc_scan_finished,
6020 .this_id = -1,
83108bd3 6021 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
3de2a653
JS		 6022 .cmd_per_lun = LPFC_CMD_PER_LUN,
6023 .use_clustering = ENABLE_CLUSTERING,
6024 .shost_attrs = lpfc_vport_attrs,
6025 .max_sectors = 0xFFFF,
5ffc266e 6026 .change_queue_depth = lpfc_change_queue_depth,
fe8f7f9c 6027 .change_queue_type = lpfc_change_queue_type,
3de2a653 6028};
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git