Commit | Line | Data |
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d85296cf | 1 | /******************************************************************* |
dea3101e | 2 | * This file is part of the Emulex Linux Device Driver for * |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
92c13f29 | 4 | * Copyright (C) 2004-2013 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 | 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 | 29 | |
30 | #include <scsi/scsi.h> | |
31 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 32 | #include <scsi/scsi_eh.h> |
dea3101e | 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 | 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 | 46 | #include "lpfc_logmsg.h" |
47 | #include "lpfc_crtn.h" | |
92d7f7b0 | 48 | #include "lpfc_vport.h" |
dea3101e | 49 | |
50 | #define LPFC_RESET_WAIT 2 | |
51 | #define LPFC_ABORT_WAIT 2 | |
52 | ||
737d4248 | 53 | int _dump_buf_done = 1; |
e2a0a9d6 JS |
54 | |
55 | static 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 |
65 | struct 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 | ||
da0436e9 JS |
71 | static void |
72 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
1c6f4ef5 JS |
73 | static void |
74 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
9c6aa9d7 JS |
75 | static int |
76 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc); | |
e2a0a9d6 JS |
77 | |
78 | static void | |
6a9c52cf | 79 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
80 | { |
81 | void *src, *dst; | |
82 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
83 | ||
84 | if (!_dump_buf_data) { | |
6a9c52cf JS |
85 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
86 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
87 | __func__); |
88 | return; | |
89 | } | |
90 | ||
91 | ||
92 | if (!sgde) { | |
6a9c52cf JS |
93 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
94 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
95 | return; |
96 | } | |
97 | ||
98 | dst = (void *) _dump_buf_data; | |
99 | while (sgde) { | |
100 | src = sg_virt(sgde); | |
101 | memcpy(dst, src, sgde->length); | |
102 | dst += sgde->length; | |
103 | sgde = sg_next(sgde); | |
104 | } | |
105 | } | |
106 | ||
107 | static void | |
6a9c52cf | 108 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
109 | { |
110 | void *src, *dst; | |
111 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
112 | ||
113 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
114 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
115 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
116 | __func__); |
117 | return; | |
118 | } | |
119 | ||
120 | if (!sgde) { | |
6a9c52cf JS |
121 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
122 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
123 | return; |
124 | } | |
125 | ||
126 | dst = _dump_buf_dif; | |
127 | while (sgde) { | |
128 | src = sg_virt(sgde); | |
129 | memcpy(dst, src, sgde->length); | |
130 | dst += sgde->length; | |
131 | sgde = sg_next(sgde); | |
132 | } | |
133 | } | |
134 | ||
9c6aa9d7 JS |
135 | static inline unsigned |
136 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
137 | { | |
138 | return sc->device->sector_size; | |
139 | } | |
140 | ||
141 | #define LPFC_CHECK_PROTECT_GUARD 1 | |
142 | #define LPFC_CHECK_PROTECT_REF 2 | |
143 | static inline unsigned | |
144 | lpfc_cmd_protect(struct scsi_cmnd *sc, int flag) | |
145 | { | |
146 | return 1; | |
147 | } | |
148 | ||
149 | static inline unsigned | |
150 | lpfc_cmd_guard_csum(struct scsi_cmnd *sc) | |
151 | { | |
152 | if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF) | |
153 | return 0; | |
154 | if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP) | |
155 | return 1; | |
156 | return 0; | |
157 | } | |
158 | ||
f1126688 JS |
159 | /** |
160 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
161 | * @phba: Pointer to HBA object. | |
162 | * @lpfc_cmd: lpfc scsi command object pointer. | |
163 | * | |
164 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
165 | * set the last bit in the response sge entry. | |
166 | **/ | |
167 | static void | |
168 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
169 | struct lpfc_scsi_buf *lpfc_cmd) | |
170 | { | |
171 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
172 | if (sgl) { | |
173 | sgl += 1; | |
174 | sgl->word2 = le32_to_cpu(sgl->word2); | |
175 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
176 | sgl->word2 = cpu_to_le32(sgl->word2); | |
177 | } | |
178 | } | |
179 | ||
ea2151b4 | 180 | /** |
3621a710 | 181 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
182 | * @phba: Pointer to HBA object. |
183 | * @lpfc_cmd: lpfc scsi command object pointer. | |
184 | * | |
185 | * This function is called when there is a command completion and this | |
186 | * function updates the statistical data for the command completion. | |
187 | **/ | |
188 | static void | |
189 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
190 | { | |
191 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
192 | struct lpfc_nodelist *pnode = rdata->pnode; | |
193 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
194 | unsigned long flags; | |
195 | struct Scsi_Host *shost = cmd->device->host; | |
196 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
197 | unsigned long latency; | |
198 | int i; | |
199 | ||
200 | if (cmd->result) | |
201 | return; | |
202 | ||
9f1e1b50 JS |
203 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
204 | ||
ea2151b4 JS |
205 | spin_lock_irqsave(shost->host_lock, flags); |
206 | if (!vport->stat_data_enabled || | |
207 | vport->stat_data_blocked || | |
5989b8d4 | 208 | !pnode || |
ea2151b4 JS |
209 | !pnode->lat_data || |
210 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
211 | spin_unlock_irqrestore(shost->host_lock, flags); | |
212 | return; | |
213 | } | |
ea2151b4 JS |
214 | |
215 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
216 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
217 | phba->bucket_step; | |
9f1e1b50 JS |
218 | /* check array subscript bounds */ |
219 | if (i < 0) | |
220 | i = 0; | |
221 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
222 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
223 | } else { |
224 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
225 | if (latency <= (phba->bucket_base + | |
226 | ((1<<i)*phba->bucket_step))) | |
227 | break; | |
228 | } | |
229 | ||
230 | pnode->lat_data[i].cmd_count++; | |
231 | spin_unlock_irqrestore(shost->host_lock, flags); | |
232 | } | |
233 | ||
ea2151b4 | 234 | /** |
3621a710 | 235 | * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event |
ea2151b4 JS |
236 | * @phba: Pointer to HBA context object. |
237 | * @vport: Pointer to vport object. | |
238 | * @ndlp: Pointer to FC node associated with the target. | |
239 | * @lun: Lun number of the scsi device. | |
240 | * @old_val: Old value of the queue depth. | |
241 | * @new_val: New value of the queue depth. | |
242 | * | |
243 | * This function sends an event to the mgmt application indicating | |
244 | * there is a change in the scsi device queue depth. | |
245 | **/ | |
246 | static void | |
247 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
248 | struct lpfc_vport *vport, | |
249 | struct lpfc_nodelist *ndlp, | |
250 | uint32_t lun, | |
251 | uint32_t old_val, | |
252 | uint32_t new_val) | |
253 | { | |
254 | struct lpfc_fast_path_event *fast_path_evt; | |
255 | unsigned long flags; | |
256 | ||
257 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
258 | if (!fast_path_evt) | |
259 | return; | |
260 | ||
261 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
262 | FC_REG_SCSI_EVENT; | |
263 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
264 | LPFC_EVENT_VARQUEDEPTH; | |
265 | ||
266 | /* Report all luns with change in queue depth */ | |
267 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
268 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
269 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
270 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
271 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
272 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
273 | } | |
274 | ||
275 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
276 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
277 | fast_path_evt->vport = vport; | |
278 | ||
279 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
280 | spin_lock_irqsave(&phba->hbalock, flags); | |
281 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
282 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
283 | lpfc_worker_wake_up(phba); | |
284 | ||
285 | return; | |
286 | } | |
287 | ||
5ffc266e JS |
288 | /** |
289 | * lpfc_change_queue_depth - Alter scsi device queue depth | |
290 | * @sdev: Pointer the scsi device on which to change the queue depth. | |
291 | * @qdepth: New queue depth to set the sdev to. | |
292 | * @reason: The reason for the queue depth change. | |
293 | * | |
294 | * This function is called by the midlayer and the LLD to alter the queue | |
295 | * depth for a scsi device. This function sets the queue depth to the new | |
296 | * value and sends an event out to log the queue depth change. | |
297 | **/ | |
298 | int | |
299 | lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) | |
300 | { | |
301 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; | |
302 | struct lpfc_hba *phba = vport->phba; | |
303 | struct lpfc_rport_data *rdata; | |
304 | unsigned long new_queue_depth, old_queue_depth; | |
305 | ||
306 | old_queue_depth = sdev->queue_depth; | |
307 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
308 | new_queue_depth = sdev->queue_depth; | |
309 | rdata = sdev->hostdata; | |
310 | if (rdata) | |
311 | lpfc_send_sdev_queuedepth_change_event(phba, vport, | |
312 | rdata->pnode, sdev->lun, | |
313 | old_queue_depth, | |
314 | new_queue_depth); | |
315 | return sdev->queue_depth; | |
316 | } | |
317 | ||
fe8f7f9c JS |
318 | /** |
319 | * lpfc_change_queue_type() - Change a device's scsi tag queuing type | |
320 | * @sdev: Pointer the scsi device whose queue depth is to change | |
321 | * @tag_type: Identifier for queue tag type | |
322 | */ | |
323 | static int | |
324 | lpfc_change_queue_type(struct scsi_device *sdev, int tag_type) | |
325 | { | |
326 | if (sdev->tagged_supported) { | |
327 | scsi_set_tag_type(sdev, tag_type); | |
328 | if (tag_type) | |
329 | scsi_activate_tcq(sdev, sdev->queue_depth); | |
330 | else | |
331 | scsi_deactivate_tcq(sdev, sdev->queue_depth); | |
332 | } else | |
333 | tag_type = 0; | |
334 | ||
335 | return tag_type; | |
336 | } | |
337 | ||
9bad7671 | 338 | /** |
3621a710 | 339 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
340 | * @phba: The Hba for which this call is being executed. |
341 | * | |
342 | * This routine is called when there is resource error in driver or firmware. | |
343 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
344 | * posts at most 1 event each second. This routine wakes up worker thread of | |
345 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
346 | * | |
347 | * This routine should be called with no lock held. | |
348 | **/ | |
92d7f7b0 | 349 | void |
eaf15d5b | 350 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
351 | { |
352 | unsigned long flags; | |
5e9d9b82 | 353 | uint32_t evt_posted; |
92d7f7b0 JS |
354 | |
355 | spin_lock_irqsave(&phba->hbalock, flags); | |
356 | atomic_inc(&phba->num_rsrc_err); | |
357 | phba->last_rsrc_error_time = jiffies; | |
358 | ||
359 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
360 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
361 | return; | |
362 | } | |
363 | ||
364 | phba->last_ramp_down_time = jiffies; | |
365 | ||
366 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
367 | ||
368 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
369 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
370 | if (!evt_posted) | |
92d7f7b0 | 371 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
372 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
373 | ||
5e9d9b82 JS |
374 | if (!evt_posted) |
375 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
376 | return; |
377 | } | |
378 | ||
9bad7671 | 379 | /** |
3621a710 | 380 | * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread |
9bad7671 JS |
381 | * @phba: The Hba for which this call is being executed. |
382 | * | |
383 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
384 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
385 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
386 | * to process WORKER_RAM_DOWN_EVENT event. | |
387 | * | |
388 | * This routine should be called with no lock held. | |
389 | **/ | |
92d7f7b0 | 390 | static inline void |
3de2a653 | 391 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
a257bf90 | 392 | uint32_t queue_depth) |
92d7f7b0 JS |
393 | { |
394 | unsigned long flags; | |
3de2a653 | 395 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 396 | uint32_t evt_posted; |
92d7f7b0 JS |
397 | atomic_inc(&phba->num_cmd_success); |
398 | ||
a257bf90 | 399 | if (vport->cfg_lun_queue_depth <= queue_depth) |
92d7f7b0 | 400 | return; |
92d7f7b0 | 401 | spin_lock_irqsave(&phba->hbalock, flags); |
5ffc266e JS |
402 | if (time_before(jiffies, |
403 | phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) || | |
404 | time_before(jiffies, | |
405 | phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) { | |
92d7f7b0 JS |
406 | spin_unlock_irqrestore(&phba->hbalock, flags); |
407 | return; | |
408 | } | |
92d7f7b0 JS |
409 | phba->last_ramp_up_time = jiffies; |
410 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
411 | ||
412 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
413 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
414 | if (!evt_posted) | |
92d7f7b0 | 415 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
416 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
417 | ||
5e9d9b82 JS |
418 | if (!evt_posted) |
419 | lpfc_worker_wake_up(phba); | |
420 | return; | |
92d7f7b0 JS |
421 | } |
422 | ||
9bad7671 | 423 | /** |
3621a710 | 424 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
425 | * @phba: The Hba for which this call is being executed. |
426 | * | |
427 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
428 | * thread.This routine reduces queue depth for all scsi device on each vport | |
429 | * associated with @phba. | |
430 | **/ | |
92d7f7b0 JS |
431 | void |
432 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
433 | { | |
549e55cd JS |
434 | struct lpfc_vport **vports; |
435 | struct Scsi_Host *shost; | |
92d7f7b0 | 436 | struct scsi_device *sdev; |
5ffc266e | 437 | unsigned long new_queue_depth; |
92d7f7b0 | 438 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 439 | int i; |
92d7f7b0 JS |
440 | |
441 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
442 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
443 | ||
75ad83a4 JS |
444 | /* |
445 | * The error and success command counters are global per | |
446 | * driver instance. If another handler has already | |
447 | * operated on this error event, just exit. | |
448 | */ | |
449 | if (num_rsrc_err == 0) | |
450 | return; | |
451 | ||
549e55cd JS |
452 | vports = lpfc_create_vport_work_array(phba); |
453 | if (vports != NULL) | |
21e9a0a5 | 454 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
455 | shost = lpfc_shost_from_vport(vports[i]); |
456 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 457 | new_queue_depth = |
549e55cd JS |
458 | sdev->queue_depth * num_rsrc_err / |
459 | (num_rsrc_err + num_cmd_success); | |
460 | if (!new_queue_depth) | |
461 | new_queue_depth = sdev->queue_depth - 1; | |
462 | else | |
463 | new_queue_depth = sdev->queue_depth - | |
464 | new_queue_depth; | |
5ffc266e JS |
465 | lpfc_change_queue_depth(sdev, new_queue_depth, |
466 | SCSI_QDEPTH_DEFAULT); | |
549e55cd | 467 | } |
92d7f7b0 | 468 | } |
09372820 | 469 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
470 | atomic_set(&phba->num_rsrc_err, 0); |
471 | atomic_set(&phba->num_cmd_success, 0); | |
472 | } | |
473 | ||
9bad7671 | 474 | /** |
3621a710 | 475 | * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler |
9bad7671 JS |
476 | * @phba: The Hba for which this call is being executed. |
477 | * | |
478 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
479 | * thread.This routine increases queue depth for all scsi device on each vport | |
480 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
481 | * num_cmd_success to zero. | |
482 | **/ | |
92d7f7b0 JS |
483 | void |
484 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
485 | { | |
549e55cd JS |
486 | struct lpfc_vport **vports; |
487 | struct Scsi_Host *shost; | |
92d7f7b0 | 488 | struct scsi_device *sdev; |
549e55cd JS |
489 | int i; |
490 | ||
491 | vports = lpfc_create_vport_work_array(phba); | |
492 | if (vports != NULL) | |
21e9a0a5 | 493 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
494 | shost = lpfc_shost_from_vport(vports[i]); |
495 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
496 | if (vports[i]->cfg_lun_queue_depth <= |
497 | sdev->queue_depth) | |
498 | continue; | |
5ffc266e JS |
499 | lpfc_change_queue_depth(sdev, |
500 | sdev->queue_depth+1, | |
501 | SCSI_QDEPTH_RAMP_UP); | |
549e55cd | 502 | } |
92d7f7b0 | 503 | } |
09372820 | 504 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
505 | atomic_set(&phba->num_rsrc_err, 0); |
506 | atomic_set(&phba->num_cmd_success, 0); | |
507 | } | |
508 | ||
a8e497d5 | 509 | /** |
3621a710 | 510 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
511 | * @phba: Pointer to HBA context object. |
512 | * | |
513 | * This function walks vport list and set each SCSI host to block state | |
514 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
515 | * with EEH when device's PCI slot has been permanently disabled. | |
516 | **/ | |
517 | void | |
518 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
519 | { | |
520 | struct lpfc_vport **vports; | |
521 | struct Scsi_Host *shost; | |
522 | struct scsi_device *sdev; | |
523 | struct fc_rport *rport; | |
524 | int i; | |
525 | ||
526 | vports = lpfc_create_vport_work_array(phba); | |
527 | if (vports != NULL) | |
21e9a0a5 | 528 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
529 | shost = lpfc_shost_from_vport(vports[i]); |
530 | shost_for_each_device(sdev, shost) { | |
531 | rport = starget_to_rport(scsi_target(sdev)); | |
532 | fc_remote_port_delete(rport); | |
533 | } | |
534 | } | |
535 | lpfc_destroy_vport_work_array(phba, vports); | |
536 | } | |
537 | ||
9bad7671 | 538 | /** |
3772a991 | 539 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 540 | * @vport: The virtual port for which this call being executed. |
3772a991 | 541 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 542 | * |
3772a991 JS |
543 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
544 | * the scsi buffer contains all the necessary information needed to initiate | |
545 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
546 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
547 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
548 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
549 | * |
550 | * Return codes: | |
3772a991 JS |
551 | * int - number of scsi buffers that were allocated. |
552 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 553 | **/ |
3772a991 JS |
554 | static int |
555 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 556 | { |
2e0fef85 | 557 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 558 | struct lpfc_scsi_buf *psb; |
559 | struct ulp_bde64 *bpl; | |
560 | IOCB_t *iocb; | |
34b02dcd JS |
561 | dma_addr_t pdma_phys_fcp_cmd; |
562 | dma_addr_t pdma_phys_fcp_rsp; | |
563 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 564 | uint16_t iotag; |
96f7077f JS |
565 | int bcnt, bpl_size; |
566 | ||
567 | bpl_size = phba->cfg_sg_dma_buf_size - | |
568 | (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
569 | ||
570 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
571 | "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", | |
572 | num_to_alloc, phba->cfg_sg_dma_buf_size, | |
573 | (int)sizeof(struct fcp_cmnd), | |
574 | (int)sizeof(struct fcp_rsp), bpl_size); | |
dea3101e | 575 | |
3772a991 JS |
576 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
577 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
578 | if (!psb) | |
579 | break; | |
dea3101e | 580 | |
3772a991 JS |
581 | /* |
582 | * Get memory from the pci pool to map the virt space to pci | |
583 | * bus space for an I/O. The DMA buffer includes space for the | |
584 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
585 | * necessary to support the sg_tablesize. | |
586 | */ | |
587 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
588 | GFP_KERNEL, &psb->dma_handle); | |
589 | if (!psb->data) { | |
590 | kfree(psb); | |
591 | break; | |
592 | } | |
593 | ||
594 | /* Initialize virtual ptrs to dma_buf region. */ | |
595 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
596 | ||
597 | /* Allocate iotag for psb->cur_iocbq. */ | |
598 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
599 | if (iotag == 0) { | |
600 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
601 | psb->data, psb->dma_handle); | |
602 | kfree(psb); | |
603 | break; | |
604 | } | |
605 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
606 | ||
607 | psb->fcp_cmnd = psb->data; | |
608 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
609 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 610 | sizeof(struct fcp_rsp); |
dea3101e | 611 | |
3772a991 JS |
612 | /* Initialize local short-hand pointers. */ |
613 | bpl = psb->fcp_bpl; | |
614 | pdma_phys_fcp_cmd = psb->dma_handle; | |
615 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
616 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
617 | sizeof(struct fcp_rsp); | |
618 | ||
619 | /* | |
620 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
621 | * are sg list bdes. Initialize the first two and leave the | |
622 | * rest for queuecommand. | |
623 | */ | |
624 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
625 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
626 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
627 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
628 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
629 | ||
630 | /* Setup the physical region for the FCP RSP */ | |
631 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
632 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
633 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
634 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
635 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
636 | ||
637 | /* | |
638 | * Since the IOCB for the FCP I/O is built into this | |
639 | * lpfc_scsi_buf, initialize it with all known data now. | |
640 | */ | |
641 | iocb = &psb->cur_iocbq.iocb; | |
642 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
643 | if ((phba->sli_rev == 3) && | |
644 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
645 | /* fill in immediate fcp command BDE */ | |
646 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
647 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
648 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
649 | unsli3.fcp_ext.icd); | |
650 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
651 | iocb->ulpBdeCount = 0; | |
652 | iocb->ulpLe = 0; | |
25985edc | 653 | /* fill in response BDE */ |
3772a991 JS |
654 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = |
655 | BUFF_TYPE_BDE_64; | |
656 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
657 | sizeof(struct fcp_rsp); | |
658 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
659 | putPaddrLow(pdma_phys_fcp_rsp); | |
660 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
661 | putPaddrHigh(pdma_phys_fcp_rsp); | |
662 | } else { | |
663 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
664 | iocb->un.fcpi64.bdl.bdeSize = | |
665 | (2 * sizeof(struct ulp_bde64)); | |
666 | iocb->un.fcpi64.bdl.addrLow = | |
667 | putPaddrLow(pdma_phys_bpl); | |
668 | iocb->un.fcpi64.bdl.addrHigh = | |
669 | putPaddrHigh(pdma_phys_bpl); | |
670 | iocb->ulpBdeCount = 1; | |
671 | iocb->ulpLe = 1; | |
672 | } | |
673 | iocb->ulpClass = CLASS3; | |
674 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 | 675 | /* Put it back into the SCSI buffer list */ |
eee8877e | 676 | psb->cur_iocbq.context1 = psb; |
1c6f4ef5 | 677 | lpfc_release_scsi_buf_s3(phba, psb); |
dea3101e | 678 | |
34b02dcd | 679 | } |
dea3101e | 680 | |
3772a991 | 681 | return bcnt; |
dea3101e | 682 | } |
683 | ||
1151e3ec JS |
684 | /** |
685 | * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport | |
686 | * @vport: pointer to lpfc vport data structure. | |
687 | * | |
688 | * This routine is invoked by the vport cleanup for deletions and the cleanup | |
689 | * for an ndlp on removal. | |
690 | **/ | |
691 | void | |
692 | lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) | |
693 | { | |
694 | struct lpfc_hba *phba = vport->phba; | |
695 | struct lpfc_scsi_buf *psb, *next_psb; | |
696 | unsigned long iflag = 0; | |
697 | ||
698 | spin_lock_irqsave(&phba->hbalock, iflag); | |
699 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
700 | list_for_each_entry_safe(psb, next_psb, | |
701 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
702 | if (psb->rdata && psb->rdata->pnode | |
703 | && psb->rdata->pnode->vport == vport) | |
704 | psb->rdata = NULL; | |
705 | } | |
706 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
707 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
708 | } | |
709 | ||
da0436e9 JS |
710 | /** |
711 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
712 | * @phba: pointer to lpfc hba data structure. | |
713 | * @axri: pointer to the fcp xri abort wcqe structure. | |
714 | * | |
715 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
716 | * FCP aborted xri. | |
717 | **/ | |
718 | void | |
719 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
720 | struct sli4_wcqe_xri_aborted *axri) | |
721 | { | |
722 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
19ca7609 | 723 | uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); |
da0436e9 JS |
724 | struct lpfc_scsi_buf *psb, *next_psb; |
725 | unsigned long iflag = 0; | |
0f65ff68 JS |
726 | struct lpfc_iocbq *iocbq; |
727 | int i; | |
19ca7609 JS |
728 | struct lpfc_nodelist *ndlp; |
729 | int rrq_empty = 0; | |
589a52d6 | 730 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
da0436e9 | 731 | |
0f65ff68 JS |
732 | spin_lock_irqsave(&phba->hbalock, iflag); |
733 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
da0436e9 JS |
734 | list_for_each_entry_safe(psb, next_psb, |
735 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
736 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
737 | list_del(&psb->list); | |
341af102 | 738 | psb->exch_busy = 0; |
da0436e9 | 739 | psb->status = IOSTAT_SUCCESS; |
0f65ff68 JS |
740 | spin_unlock( |
741 | &phba->sli4_hba.abts_scsi_buf_list_lock); | |
1151e3ec JS |
742 | if (psb->rdata && psb->rdata->pnode) |
743 | ndlp = psb->rdata->pnode; | |
744 | else | |
745 | ndlp = NULL; | |
746 | ||
19ca7609 | 747 | rrq_empty = list_empty(&phba->active_rrq_list); |
0f65ff68 | 748 | spin_unlock_irqrestore(&phba->hbalock, iflag); |
cb69f7de | 749 | if (ndlp) { |
ee0f4fe1 JS |
750 | lpfc_set_rrq_active(phba, ndlp, |
751 | psb->cur_iocbq.sli4_lxritag, rxid, 1); | |
cb69f7de JS |
752 | lpfc_sli4_abts_err_handler(phba, ndlp, axri); |
753 | } | |
da0436e9 | 754 | lpfc_release_scsi_buf_s4(phba, psb); |
19ca7609 JS |
755 | if (rrq_empty) |
756 | lpfc_worker_wake_up(phba); | |
da0436e9 JS |
757 | return; |
758 | } | |
759 | } | |
0f65ff68 JS |
760 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); |
761 | for (i = 1; i <= phba->sli.last_iotag; i++) { | |
762 | iocbq = phba->sli.iocbq_lookup[i]; | |
763 | ||
764 | if (!(iocbq->iocb_flag & LPFC_IO_FCP) || | |
765 | (iocbq->iocb_flag & LPFC_IO_LIBDFC)) | |
766 | continue; | |
767 | if (iocbq->sli4_xritag != xri) | |
768 | continue; | |
769 | psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); | |
770 | psb->exch_busy = 0; | |
771 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
0e9bb8d7 | 772 | if (!list_empty(&pring->txq)) |
589a52d6 | 773 | lpfc_worker_wake_up(phba); |
0f65ff68 JS |
774 | return; |
775 | ||
776 | } | |
777 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
da0436e9 JS |
778 | } |
779 | ||
780 | /** | |
8a9d2e80 | 781 | * lpfc_sli4_post_scsi_sgl_list - Psot blocks of scsi buffer sgls from a list |
da0436e9 | 782 | * @phba: pointer to lpfc hba data structure. |
8a9d2e80 | 783 | * @post_sblist: pointer to the scsi buffer list. |
da0436e9 | 784 | * |
8a9d2e80 JS |
785 | * This routine walks a list of scsi buffers that was passed in. It attempts |
786 | * to construct blocks of scsi buffer sgls which contains contiguous xris and | |
787 | * uses the non-embedded SGL block post mailbox commands to post to the port. | |
788 | * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use | |
789 | * embedded SGL post mailbox command for posting. The @post_sblist passed in | |
790 | * must be local list, thus no lock is needed when manipulate the list. | |
da0436e9 | 791 | * |
8a9d2e80 | 792 | * Returns: 0 = failure, non-zero number of successfully posted buffers. |
da0436e9 JS |
793 | **/ |
794 | int | |
8a9d2e80 JS |
795 | lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba, |
796 | struct list_head *post_sblist, int sb_count) | |
da0436e9 | 797 | { |
8a9d2e80 | 798 | struct lpfc_scsi_buf *psb, *psb_next; |
96f7077f | 799 | int status, sgl_size; |
8a9d2e80 JS |
800 | int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; |
801 | dma_addr_t pdma_phys_bpl1; | |
802 | int last_xritag = NO_XRI; | |
803 | LIST_HEAD(prep_sblist); | |
804 | LIST_HEAD(blck_sblist); | |
805 | LIST_HEAD(scsi_sblist); | |
806 | ||
807 | /* sanity check */ | |
808 | if (sb_count <= 0) | |
809 | return -EINVAL; | |
810 | ||
96f7077f JS |
811 | sgl_size = phba->cfg_sg_dma_buf_size - |
812 | (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
813 | ||
8a9d2e80 JS |
814 | list_for_each_entry_safe(psb, psb_next, post_sblist, list) { |
815 | list_del_init(&psb->list); | |
816 | block_cnt++; | |
817 | if ((last_xritag != NO_XRI) && | |
818 | (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) { | |
819 | /* a hole in xri block, form a sgl posting block */ | |
820 | list_splice_init(&prep_sblist, &blck_sblist); | |
821 | post_cnt = block_cnt - 1; | |
822 | /* prepare list for next posting block */ | |
823 | list_add_tail(&psb->list, &prep_sblist); | |
824 | block_cnt = 1; | |
825 | } else { | |
826 | /* prepare list for next posting block */ | |
827 | list_add_tail(&psb->list, &prep_sblist); | |
828 | /* enough sgls for non-embed sgl mbox command */ | |
829 | if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
830 | list_splice_init(&prep_sblist, &blck_sblist); | |
831 | post_cnt = block_cnt; | |
832 | block_cnt = 0; | |
da0436e9 | 833 | } |
8a9d2e80 JS |
834 | } |
835 | num_posting++; | |
836 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
da0436e9 | 837 | |
8a9d2e80 JS |
838 | /* end of repost sgl list condition for SCSI buffers */ |
839 | if (num_posting == sb_count) { | |
840 | if (post_cnt == 0) { | |
841 | /* last sgl posting block */ | |
842 | list_splice_init(&prep_sblist, &blck_sblist); | |
843 | post_cnt = block_cnt; | |
844 | } else if (block_cnt == 1) { | |
845 | /* last single sgl with non-contiguous xri */ | |
96f7077f | 846 | if (sgl_size > SGL_PAGE_SIZE) |
8a9d2e80 JS |
847 | pdma_phys_bpl1 = psb->dma_phys_bpl + |
848 | SGL_PAGE_SIZE; | |
849 | else | |
850 | pdma_phys_bpl1 = 0; | |
851 | status = lpfc_sli4_post_sgl(phba, | |
852 | psb->dma_phys_bpl, | |
853 | pdma_phys_bpl1, | |
854 | psb->cur_iocbq.sli4_xritag); | |
855 | if (status) { | |
856 | /* failure, put on abort scsi list */ | |
857 | psb->exch_busy = 1; | |
858 | } else { | |
859 | /* success, put on SCSI buffer list */ | |
860 | psb->exch_busy = 0; | |
861 | psb->status = IOSTAT_SUCCESS; | |
862 | num_posted++; | |
863 | } | |
864 | /* success, put on SCSI buffer sgl list */ | |
865 | list_add_tail(&psb->list, &scsi_sblist); | |
866 | } | |
867 | } | |
da0436e9 | 868 | |
8a9d2e80 JS |
869 | /* continue until a nembed page worth of sgls */ |
870 | if (post_cnt == 0) | |
da0436e9 | 871 | continue; |
8a9d2e80 JS |
872 | |
873 | /* post block of SCSI buffer list sgls */ | |
874 | status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist, | |
875 | post_cnt); | |
876 | ||
877 | /* don't reset xirtag due to hole in xri block */ | |
878 | if (block_cnt == 0) | |
879 | last_xritag = NO_XRI; | |
880 | ||
881 | /* reset SCSI buffer post count for next round of posting */ | |
882 | post_cnt = 0; | |
883 | ||
884 | /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */ | |
885 | while (!list_empty(&blck_sblist)) { | |
886 | list_remove_head(&blck_sblist, psb, | |
887 | struct lpfc_scsi_buf, list); | |
da0436e9 | 888 | if (status) { |
8a9d2e80 | 889 | /* failure, put on abort scsi list */ |
341af102 | 890 | psb->exch_busy = 1; |
341af102 | 891 | } else { |
8a9d2e80 | 892 | /* success, put on SCSI buffer list */ |
341af102 | 893 | psb->exch_busy = 0; |
da0436e9 | 894 | psb->status = IOSTAT_SUCCESS; |
8a9d2e80 | 895 | num_posted++; |
341af102 | 896 | } |
8a9d2e80 | 897 | list_add_tail(&psb->list, &scsi_sblist); |
da0436e9 JS |
898 | } |
899 | } | |
8a9d2e80 JS |
900 | /* Push SCSI buffers with sgl posted to the availble list */ |
901 | while (!list_empty(&scsi_sblist)) { | |
902 | list_remove_head(&scsi_sblist, psb, | |
903 | struct lpfc_scsi_buf, list); | |
904 | lpfc_release_scsi_buf_s4(phba, psb); | |
905 | } | |
906 | return num_posted; | |
907 | } | |
908 | ||
909 | /** | |
910 | * lpfc_sli4_repost_scsi_sgl_list - Repsot all the allocated scsi buffer sgls | |
911 | * @phba: pointer to lpfc hba data structure. | |
912 | * | |
913 | * This routine walks the list of scsi buffers that have been allocated and | |
914 | * repost them to the port by using SGL block post. This is needed after a | |
915 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
916 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
917 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
918 | * | |
919 | * Returns: 0 = success, non-zero failure. | |
920 | **/ | |
921 | int | |
922 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
923 | { | |
924 | LIST_HEAD(post_sblist); | |
925 | int num_posted, rc = 0; | |
926 | ||
927 | /* get all SCSI buffers need to repost to a local list */ | |
a40fc5f0 | 928 | spin_lock_irq(&phba->scsi_buf_list_get_lock); |
164cecd1 | 929 | spin_lock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 JS |
930 | list_splice_init(&phba->lpfc_scsi_buf_list_get, &post_sblist); |
931 | list_splice(&phba->lpfc_scsi_buf_list_put, &post_sblist); | |
164cecd1 | 932 | spin_unlock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 | 933 | spin_unlock_irq(&phba->scsi_buf_list_get_lock); |
8a9d2e80 JS |
934 | |
935 | /* post the list of scsi buffer sgls to port if available */ | |
936 | if (!list_empty(&post_sblist)) { | |
937 | num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist, | |
938 | phba->sli4_hba.scsi_xri_cnt); | |
939 | /* failed to post any scsi buffer, return error */ | |
940 | if (num_posted == 0) | |
941 | rc = -EIO; | |
942 | } | |
da0436e9 JS |
943 | return rc; |
944 | } | |
945 | ||
946 | /** | |
947 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
948 | * @vport: The virtual port for which this call being executed. | |
949 | * @num_to_allocate: The requested number of buffers to allocate. | |
950 | * | |
8a9d2e80 | 951 | * This routine allocates scsi buffers for device with SLI-4 interface spec, |
da0436e9 | 952 | * the scsi buffer contains all the necessary information needed to initiate |
8a9d2e80 JS |
953 | * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put |
954 | * them on a list, it post them to the port by using SGL block post. | |
da0436e9 JS |
955 | * |
956 | * Return codes: | |
8a9d2e80 | 957 | * int - number of scsi buffers that were allocated and posted. |
da0436e9 JS |
958 | * 0 = failure, less than num_to_alloc is a partial failure. |
959 | **/ | |
960 | static int | |
961 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
962 | { | |
963 | struct lpfc_hba *phba = vport->phba; | |
964 | struct lpfc_scsi_buf *psb; | |
965 | struct sli4_sge *sgl; | |
966 | IOCB_t *iocb; | |
967 | dma_addr_t pdma_phys_fcp_cmd; | |
968 | dma_addr_t pdma_phys_fcp_rsp; | |
96f7077f | 969 | dma_addr_t pdma_phys_bpl; |
8a9d2e80 | 970 | uint16_t iotag, lxri = 0; |
96f7077f | 971 | int bcnt, num_posted, sgl_size; |
8a9d2e80 JS |
972 | LIST_HEAD(prep_sblist); |
973 | LIST_HEAD(post_sblist); | |
974 | LIST_HEAD(scsi_sblist); | |
da0436e9 | 975 | |
96f7077f JS |
976 | sgl_size = phba->cfg_sg_dma_buf_size - |
977 | (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
978 | ||
979 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
980 | "9068 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", | |
981 | num_to_alloc, phba->cfg_sg_dma_buf_size, sgl_size, | |
982 | (int)sizeof(struct fcp_cmnd), | |
983 | (int)sizeof(struct fcp_rsp)); | |
984 | ||
da0436e9 JS |
985 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
986 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
987 | if (!psb) | |
988 | break; | |
da0436e9 | 989 | /* |
8a9d2e80 JS |
990 | * Get memory from the pci pool to map the virt space to |
991 | * pci bus space for an I/O. The DMA buffer includes space | |
992 | * for the struct fcp_cmnd, struct fcp_rsp and the number | |
993 | * of bde's necessary to support the sg_tablesize. | |
da0436e9 JS |
994 | */ |
995 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
996 | GFP_KERNEL, &psb->dma_handle); | |
997 | if (!psb->data) { | |
998 | kfree(psb); | |
999 | break; | |
1000 | } | |
da0436e9 JS |
1001 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); |
1002 | ||
092cb034 JS |
1003 | /* |
1004 | * 4K Page alignment is CRITICAL to BlockGuard, double check | |
1005 | * to be sure. | |
1006 | */ | |
1007 | if (phba->cfg_enable_bg && (((unsigned long)(psb->data) & | |
1008 | (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) { | |
96f7077f JS |
1009 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
1010 | psb->data, psb->dma_handle); | |
1011 | kfree(psb); | |
1012 | break; | |
1013 | } | |
1014 | ||
f7bc6434 JS |
1015 | |
1016 | lxri = lpfc_sli4_next_xritag(phba); | |
1017 | if (lxri == NO_XRI) { | |
b92938b4 | 1018 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
f7bc6434 | 1019 | psb->data, psb->dma_handle); |
da0436e9 JS |
1020 | kfree(psb); |
1021 | break; | |
1022 | } | |
1023 | ||
f7bc6434 JS |
1024 | /* Allocate iotag for psb->cur_iocbq. */ |
1025 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
1026 | if (iotag == 0) { | |
da0436e9 | 1027 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
f7bc6434 | 1028 | psb->data, psb->dma_handle); |
da0436e9 | 1029 | kfree(psb); |
f7bc6434 JS |
1030 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
1031 | "3368 Failed to allocated IOTAG for" | |
1032 | " XRI:0x%x\n", lxri); | |
1033 | lpfc_sli4_free_xri(phba, lxri); | |
da0436e9 JS |
1034 | break; |
1035 | } | |
6d368e53 JS |
1036 | psb->cur_iocbq.sli4_lxritag = lxri; |
1037 | psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri]; | |
da0436e9 | 1038 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
da0436e9 | 1039 | psb->fcp_bpl = psb->data; |
96f7077f | 1040 | psb->fcp_cmnd = (psb->data + sgl_size); |
da0436e9 JS |
1041 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + |
1042 | sizeof(struct fcp_cmnd)); | |
1043 | ||
1044 | /* Initialize local short-hand pointers. */ | |
1045 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
1046 | pdma_phys_bpl = psb->dma_handle; | |
96f7077f | 1047 | pdma_phys_fcp_cmd = (psb->dma_handle + sgl_size); |
da0436e9 JS |
1048 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); |
1049 | ||
1050 | /* | |
8a9d2e80 JS |
1051 | * The first two bdes are the FCP_CMD and FCP_RSP. |
1052 | * The balance are sg list bdes. Initialize the | |
1053 | * first two and leave the rest for queuecommand. | |
da0436e9 JS |
1054 | */ |
1055 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
1056 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
0558056c | 1057 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
1058 | bf_set(lpfc_sli4_sge_last, sgl, 0); |
1059 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 1060 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); |
da0436e9 JS |
1061 | sgl++; |
1062 | ||
1063 | /* Setup the physical region for the FCP RSP */ | |
1064 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
1065 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
0558056c | 1066 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
1067 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
1068 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 1069 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); |
da0436e9 JS |
1070 | |
1071 | /* | |
1072 | * Since the IOCB for the FCP I/O is built into this | |
1073 | * lpfc_scsi_buf, initialize it with all known data now. | |
1074 | */ | |
1075 | iocb = &psb->cur_iocbq.iocb; | |
1076 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
1077 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
1078 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
1079 | * We are setting the bpl to point to out sgl. An sgl's | |
1080 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
1081 | */ | |
1082 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
1083 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
1084 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
1085 | iocb->ulpBdeCount = 1; | |
1086 | iocb->ulpLe = 1; | |
1087 | iocb->ulpClass = CLASS3; | |
8a9d2e80 | 1088 | psb->cur_iocbq.context1 = psb; |
da0436e9 | 1089 | psb->dma_phys_bpl = pdma_phys_bpl; |
da0436e9 | 1090 | |
8a9d2e80 JS |
1091 | /* add the scsi buffer to a post list */ |
1092 | list_add_tail(&psb->list, &post_sblist); | |
a40fc5f0 | 1093 | spin_lock_irq(&phba->scsi_buf_list_get_lock); |
8a9d2e80 | 1094 | phba->sli4_hba.scsi_xri_cnt++; |
a40fc5f0 | 1095 | spin_unlock_irq(&phba->scsi_buf_list_get_lock); |
8a9d2e80 JS |
1096 | } |
1097 | lpfc_printf_log(phba, KERN_INFO, LOG_BG, | |
1098 | "3021 Allocate %d out of %d requested new SCSI " | |
1099 | "buffers\n", bcnt, num_to_alloc); | |
1100 | ||
1101 | /* post the list of scsi buffer sgls to port if available */ | |
1102 | if (!list_empty(&post_sblist)) | |
1103 | num_posted = lpfc_sli4_post_scsi_sgl_list(phba, | |
1104 | &post_sblist, bcnt); | |
1105 | else | |
1106 | num_posted = 0; | |
1107 | ||
1108 | return num_posted; | |
da0436e9 JS |
1109 | } |
1110 | ||
9bad7671 | 1111 | /** |
3772a991 JS |
1112 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
1113 | * @vport: The virtual port for which this call being executed. | |
1114 | * @num_to_allocate: The requested number of buffers to allocate. | |
1115 | * | |
1116 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
1117 | * the lpfc_hba struct. | |
1118 | * | |
1119 | * Return codes: | |
1120 | * int - number of scsi buffers that were allocated. | |
1121 | * 0 = failure, less than num_to_alloc is a partial failure. | |
1122 | **/ | |
1123 | static inline int | |
1124 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
1125 | { | |
1126 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
1127 | } | |
1128 | ||
1129 | /** | |
19ca7609 | 1130 | * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA |
3772a991 | 1131 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
1132 | * |
1133 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1134 | * and returns to caller. | |
1135 | * | |
1136 | * Return codes: | |
1137 | * NULL - Error | |
1138 | * Pointer to lpfc_scsi_buf - Success | |
1139 | **/ | |
455c53ec | 1140 | static struct lpfc_scsi_buf* |
19ca7609 | 1141 | lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) |
dea3101e | 1142 | { |
0bd4ca25 | 1143 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
a40fc5f0 | 1144 | struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get; |
164cecd1 | 1145 | unsigned long iflag = 0; |
a40fc5f0 | 1146 | |
164cecd1 | 1147 | spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); |
a40fc5f0 JS |
1148 | list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_scsi_buf, |
1149 | list); | |
1150 | if (!lpfc_cmd) { | |
164cecd1 | 1151 | spin_lock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 JS |
1152 | list_splice(&phba->lpfc_scsi_buf_list_put, |
1153 | &phba->lpfc_scsi_buf_list_get); | |
1154 | INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); | |
1155 | list_remove_head(scsi_buf_list_get, lpfc_cmd, | |
1156 | struct lpfc_scsi_buf, list); | |
164cecd1 | 1157 | spin_unlock(&phba->scsi_buf_list_put_lock); |
1dcb58e5 | 1158 | } |
164cecd1 | 1159 | spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); |
0bd4ca25 JSEC |
1160 | return lpfc_cmd; |
1161 | } | |
19ca7609 JS |
1162 | /** |
1163 | * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1164 | * @phba: The HBA for which this call is being executed. | |
1165 | * | |
1166 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1167 | * and returns to caller. | |
1168 | * | |
1169 | * Return codes: | |
1170 | * NULL - Error | |
1171 | * Pointer to lpfc_scsi_buf - Success | |
1172 | **/ | |
1173 | static struct lpfc_scsi_buf* | |
1174 | lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1175 | { | |
3be30e0e | 1176 | struct lpfc_scsi_buf *lpfc_cmd, *lpfc_cmd_next; |
164cecd1 | 1177 | unsigned long iflag = 0; |
19ca7609 JS |
1178 | int found = 0; |
1179 | ||
164cecd1 | 1180 | spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); |
3be30e0e JS |
1181 | list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next, |
1182 | &phba->lpfc_scsi_buf_list_get, list) { | |
19ca7609 | 1183 | if (lpfc_test_rrq_active(phba, ndlp, |
ee0f4fe1 | 1184 | lpfc_cmd->cur_iocbq.sli4_lxritag)) |
1151e3ec JS |
1185 | continue; |
1186 | list_del(&lpfc_cmd->list); | |
19ca7609 | 1187 | found = 1; |
1151e3ec | 1188 | break; |
19ca7609 | 1189 | } |
a40fc5f0 | 1190 | if (!found) { |
164cecd1 | 1191 | spin_lock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 JS |
1192 | list_splice(&phba->lpfc_scsi_buf_list_put, |
1193 | &phba->lpfc_scsi_buf_list_get); | |
1194 | INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); | |
164cecd1 | 1195 | spin_unlock(&phba->scsi_buf_list_put_lock); |
3be30e0e JS |
1196 | list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next, |
1197 | &phba->lpfc_scsi_buf_list_get, list) { | |
a40fc5f0 JS |
1198 | if (lpfc_test_rrq_active( |
1199 | phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag)) | |
1200 | continue; | |
1201 | list_del(&lpfc_cmd->list); | |
1202 | found = 1; | |
1203 | break; | |
1204 | } | |
1205 | } | |
164cecd1 | 1206 | spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); |
1151e3ec JS |
1207 | if (!found) |
1208 | return NULL; | |
a40fc5f0 | 1209 | return lpfc_cmd; |
19ca7609 JS |
1210 | } |
1211 | /** | |
1212 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1213 | * @phba: The HBA for which this call is being executed. | |
1214 | * | |
1215 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1216 | * and returns to caller. | |
1217 | * | |
1218 | * Return codes: | |
1219 | * NULL - Error | |
1220 | * Pointer to lpfc_scsi_buf - Success | |
1221 | **/ | |
1222 | static struct lpfc_scsi_buf* | |
1223 | lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1224 | { | |
1225 | return phba->lpfc_get_scsi_buf(phba, ndlp); | |
1226 | } | |
dea3101e | 1227 | |
9bad7671 | 1228 | /** |
3772a991 | 1229 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
1230 | * @phba: The Hba for which this call is being executed. |
1231 | * @psb: The scsi buffer which is being released. | |
1232 | * | |
1233 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1234 | * lpfc_scsi_buf_list list. | |
1235 | **/ | |
0bd4ca25 | 1236 | static void |
3772a991 | 1237 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 1238 | { |
875fbdfe | 1239 | unsigned long iflag = 0; |
dea3101e | 1240 | |
a40fc5f0 JS |
1241 | psb->seg_cnt = 0; |
1242 | psb->nonsg_phys = 0; | |
1243 | psb->prot_seg_cnt = 0; | |
1244 | ||
1245 | spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); | |
0bd4ca25 | 1246 | psb->pCmd = NULL; |
6a485eb9 | 1247 | psb->cur_iocbq.iocb_flag = LPFC_IO_FCP; |
a40fc5f0 JS |
1248 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); |
1249 | spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); | |
dea3101e | 1250 | } |
1251 | ||
da0436e9 JS |
1252 | /** |
1253 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
1254 | * @phba: The Hba for which this call is being executed. | |
1255 | * @psb: The scsi buffer which is being released. | |
1256 | * | |
1257 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1258 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
1259 | * and cannot be reused for at least RA_TOV amount of time if it was | |
1260 | * aborted. | |
1261 | **/ | |
1262 | static void | |
1263 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1264 | { | |
1265 | unsigned long iflag = 0; | |
1266 | ||
a40fc5f0 JS |
1267 | psb->seg_cnt = 0; |
1268 | psb->nonsg_phys = 0; | |
1269 | psb->prot_seg_cnt = 0; | |
1270 | ||
341af102 | 1271 | if (psb->exch_busy) { |
da0436e9 JS |
1272 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, |
1273 | iflag); | |
1274 | psb->pCmd = NULL; | |
1275 | list_add_tail(&psb->list, | |
1276 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
1277 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
1278 | iflag); | |
1279 | } else { | |
da0436e9 | 1280 | psb->pCmd = NULL; |
6a485eb9 | 1281 | psb->cur_iocbq.iocb_flag = LPFC_IO_FCP; |
a40fc5f0 JS |
1282 | spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); |
1283 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); | |
1284 | spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); | |
da0436e9 JS |
1285 | } |
1286 | } | |
1287 | ||
9bad7671 | 1288 | /** |
3772a991 JS |
1289 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
1290 | * @phba: The Hba for which this call is being executed. | |
1291 | * @psb: The scsi buffer which is being released. | |
1292 | * | |
1293 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1294 | * lpfc_scsi_buf_list list. | |
1295 | **/ | |
1296 | static void | |
1297 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1298 | { | |
1299 | ||
1300 | phba->lpfc_release_scsi_buf(phba, psb); | |
1301 | } | |
1302 | ||
1303 | /** | |
1304 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
1305 | * @phba: The Hba for which this call is being executed. |
1306 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1307 | * | |
1308 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
1309 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
1310 | * through sg elements and format the bdea. This routine also initializes all | |
1311 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
1312 | * |
1313 | * Return codes: | |
1314 | * 1 - Error | |
1315 | * 0 - Success | |
1316 | **/ | |
dea3101e | 1317 | static int |
3772a991 | 1318 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 1319 | { |
1320 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1321 | struct scatterlist *sgel = NULL; | |
1322 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1323 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
0f65ff68 | 1324 | struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; |
dea3101e | 1325 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
34b02dcd | 1326 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1327 | dma_addr_t physaddr; |
34b02dcd | 1328 | uint32_t num_bde = 0; |
a0b4f78f | 1329 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 1330 | |
1331 | /* | |
1332 | * There are three possibilities here - use scatter-gather segment, use | |
1333 | * the single mapping, or neither. Start the lpfc command prep by | |
1334 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1335 | * data bde entry. | |
1336 | */ | |
1337 | bpl += 2; | |
c59fd9eb | 1338 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 1339 | /* |
1340 | * The driver stores the segment count returned from pci_map_sg | |
1341 | * because this a count of dma-mappings used to map the use_sg | |
1342 | * pages. They are not guaranteed to be the same for those | |
1343 | * architectures that implement an IOMMU. | |
1344 | */ | |
dea3101e | 1345 | |
c59fd9eb FT |
1346 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1347 | scsi_sg_count(scsi_cmnd), datadir); | |
1348 | if (unlikely(!nseg)) | |
1349 | return 1; | |
1350 | ||
a0b4f78f | 1351 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1352 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1353 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1354 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1355 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1356 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1357 | lpfc_cmd->seg_cnt); |
96f7077f | 1358 | lpfc_cmd->seg_cnt = 0; |
a0b4f78f | 1359 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 1360 | return 1; |
1361 | } | |
1362 | ||
1363 | /* | |
1364 | * The driver established a maximum scatter-gather segment count | |
1365 | * during probe that limits the number of sg elements in any | |
1366 | * single scsi command. Just run through the seg_cnt and format | |
1367 | * the bde's. | |
34b02dcd JS |
1368 | * When using SLI-3 the driver will try to fit all the BDEs into |
1369 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1370 | * does for SLI-2 mode. | |
dea3101e | 1371 | */ |
34b02dcd | 1372 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1373 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1374 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1375 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
0f65ff68 | 1376 | !(iocbq->iocb_flag & DSS_SECURITY_OP) && |
34b02dcd JS |
1377 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1378 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1379 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1380 | data_bde->addrLow = putPaddrLow(physaddr); | |
1381 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1382 | data_bde++; | |
1383 | } else { | |
1384 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1385 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1386 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1387 | bpl->addrLow = | |
1388 | le32_to_cpu(putPaddrLow(physaddr)); | |
1389 | bpl->addrHigh = | |
1390 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1391 | bpl++; | |
1392 | } | |
dea3101e | 1393 | } |
c59fd9eb | 1394 | } |
dea3101e | 1395 | |
1396 | /* | |
1397 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1398 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1399 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1400 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1401 | */ |
e2a0a9d6 | 1402 | if (phba->sli_rev == 3 && |
0f65ff68 JS |
1403 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
1404 | !(iocbq->iocb_flag & DSS_SECURITY_OP)) { | |
34b02dcd JS |
1405 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1406 | /* | |
1407 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1408 | * This I/O has more than 3 BDE so the 1st data bde will | |
1409 | * be a BPL that is filled in here. | |
1410 | */ | |
1411 | physaddr = lpfc_cmd->dma_handle; | |
1412 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1413 | data_bde->tus.f.bdeSize = (num_bde * | |
1414 | sizeof(struct ulp_bde64)); | |
1415 | physaddr += (sizeof(struct fcp_cmnd) + | |
1416 | sizeof(struct fcp_rsp) + | |
1417 | (2 * sizeof(struct ulp_bde64))); | |
1418 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1419 | data_bde->addrLow = putPaddrLow(physaddr); | |
25985edc | 1420 | /* ebde count includes the response bde and data bpl */ |
34b02dcd JS |
1421 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; |
1422 | } else { | |
25985edc | 1423 | /* ebde count includes the response bde and data bdes */ |
34b02dcd JS |
1424 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
1425 | } | |
1426 | } else { | |
1427 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1428 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
0f65ff68 | 1429 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
34b02dcd | 1430 | } |
09372820 | 1431 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1432 | |
1433 | /* | |
1434 | * Due to difference in data length between DIF/non-DIF paths, | |
1435 | * we need to set word 4 of IOCB here | |
1436 | */ | |
a257bf90 | 1437 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1438 | return 0; |
1439 | } | |
1440 | ||
f9bb2da1 | 1441 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 1442 | |
9a6b09c0 JS |
1443 | /* Return if if error injection is detected by Initiator */ |
1444 | #define BG_ERR_INIT 0x1 | |
1445 | /* Return if if error injection is detected by Target */ | |
1446 | #define BG_ERR_TGT 0x2 | |
1447 | /* Return if if swapping CSUM<-->CRC is required for error injection */ | |
1448 | #define BG_ERR_SWAP 0x10 | |
1449 | /* Return if disabling Guard/Ref/App checking is required for error injection */ | |
1450 | #define BG_ERR_CHECK 0x20 | |
acd6859b JS |
1451 | |
1452 | /** | |
1453 | * lpfc_bg_err_inject - Determine if we should inject an error | |
1454 | * @phba: The Hba for which this call is being executed. | |
f9bb2da1 JS |
1455 | * @sc: The SCSI command to examine |
1456 | * @reftag: (out) BlockGuard reference tag for transmitted data | |
1457 | * @apptag: (out) BlockGuard application tag for transmitted data | |
1458 | * @new_guard (in) Value to replace CRC with if needed | |
1459 | * | |
9a6b09c0 | 1460 | * Returns BG_ERR_* bit mask or 0 if request ignored |
acd6859b | 1461 | **/ |
f9bb2da1 JS |
1462 | static int |
1463 | lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1464 | uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) | |
1465 | { | |
1466 | struct scatterlist *sgpe; /* s/g prot entry */ | |
1467 | struct scatterlist *sgde; /* s/g data entry */ | |
9a6b09c0 | 1468 | struct lpfc_scsi_buf *lpfc_cmd = NULL; |
acd6859b | 1469 | struct scsi_dif_tuple *src = NULL; |
4ac9b226 JS |
1470 | struct lpfc_nodelist *ndlp; |
1471 | struct lpfc_rport_data *rdata; | |
f9bb2da1 JS |
1472 | uint32_t op = scsi_get_prot_op(sc); |
1473 | uint32_t blksize; | |
1474 | uint32_t numblks; | |
1475 | sector_t lba; | |
1476 | int rc = 0; | |
acd6859b | 1477 | int blockoff = 0; |
f9bb2da1 JS |
1478 | |
1479 | if (op == SCSI_PROT_NORMAL) | |
1480 | return 0; | |
1481 | ||
acd6859b JS |
1482 | sgpe = scsi_prot_sglist(sc); |
1483 | sgde = scsi_sglist(sc); | |
f9bb2da1 | 1484 | lba = scsi_get_lba(sc); |
4ac9b226 JS |
1485 | |
1486 | /* First check if we need to match the LBA */ | |
f9bb2da1 JS |
1487 | if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { |
1488 | blksize = lpfc_cmd_blksize(sc); | |
1489 | numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; | |
1490 | ||
1491 | /* Make sure we have the right LBA if one is specified */ | |
1492 | if ((phba->lpfc_injerr_lba < lba) || | |
1493 | (phba->lpfc_injerr_lba >= (lba + numblks))) | |
1494 | return 0; | |
acd6859b JS |
1495 | if (sgpe) { |
1496 | blockoff = phba->lpfc_injerr_lba - lba; | |
1497 | numblks = sg_dma_len(sgpe) / | |
1498 | sizeof(struct scsi_dif_tuple); | |
1499 | if (numblks < blockoff) | |
1500 | blockoff = numblks; | |
acd6859b | 1501 | } |
f9bb2da1 JS |
1502 | } |
1503 | ||
4ac9b226 JS |
1504 | /* Next check if we need to match the remote NPortID or WWPN */ |
1505 | rdata = sc->device->hostdata; | |
1506 | if (rdata && rdata->pnode) { | |
1507 | ndlp = rdata->pnode; | |
1508 | ||
1509 | /* Make sure we have the right NPortID if one is specified */ | |
1510 | if (phba->lpfc_injerr_nportid && | |
1511 | (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) | |
1512 | return 0; | |
1513 | ||
1514 | /* | |
1515 | * Make sure we have the right WWPN if one is specified. | |
1516 | * wwn[0] should be a non-zero NAA in a good WWPN. | |
1517 | */ | |
1518 | if (phba->lpfc_injerr_wwpn.u.wwn[0] && | |
1519 | (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, | |
1520 | sizeof(struct lpfc_name)) != 0)) | |
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | /* Setup a ptr to the protection data if the SCSI host provides it */ | |
1525 | if (sgpe) { | |
1526 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); | |
1527 | src += blockoff; | |
1528 | lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble; | |
1529 | } | |
1530 | ||
f9bb2da1 JS |
1531 | /* Should we change the Reference Tag */ |
1532 | if (reftag) { | |
acd6859b JS |
1533 | if (phba->lpfc_injerr_wref_cnt) { |
1534 | switch (op) { | |
1535 | case SCSI_PROT_WRITE_PASS: | |
9a6b09c0 JS |
1536 | if (src) { |
1537 | /* | |
1538 | * For WRITE_PASS, force the error | |
1539 | * to be sent on the wire. It should | |
1540 | * be detected by the Target. | |
1541 | * If blockoff != 0 error will be | |
1542 | * inserted in middle of the IO. | |
1543 | */ | |
acd6859b JS |
1544 | |
1545 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1546 | "9076 BLKGRD: Injecting reftag error: " | |
1547 | "write lba x%lx + x%x oldrefTag x%x\n", | |
1548 | (unsigned long)lba, blockoff, | |
9a6b09c0 | 1549 | be32_to_cpu(src->ref_tag)); |
f9bb2da1 | 1550 | |
acd6859b | 1551 | /* |
9a6b09c0 JS |
1552 | * Save the old ref_tag so we can |
1553 | * restore it on completion. | |
acd6859b | 1554 | */ |
9a6b09c0 JS |
1555 | if (lpfc_cmd) { |
1556 | lpfc_cmd->prot_data_type = | |
1557 | LPFC_INJERR_REFTAG; | |
1558 | lpfc_cmd->prot_data_segment = | |
1559 | src; | |
1560 | lpfc_cmd->prot_data = | |
1561 | src->ref_tag; | |
1562 | } | |
1563 | src->ref_tag = cpu_to_be32(0xDEADBEEF); | |
acd6859b | 1564 | phba->lpfc_injerr_wref_cnt--; |
4ac9b226 JS |
1565 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1566 | phba->lpfc_injerr_nportid = 0; | |
1567 | phba->lpfc_injerr_lba = | |
1568 | LPFC_INJERR_LBA_OFF; | |
1569 | memset(&phba->lpfc_injerr_wwpn, | |
1570 | 0, sizeof(struct lpfc_name)); | |
1571 | } | |
9a6b09c0 JS |
1572 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
1573 | ||
acd6859b JS |
1574 | break; |
1575 | } | |
1576 | /* Drop thru */ | |
9a6b09c0 | 1577 | case SCSI_PROT_WRITE_INSERT: |
acd6859b | 1578 | /* |
9a6b09c0 JS |
1579 | * For WRITE_INSERT, force the error |
1580 | * to be sent on the wire. It should be | |
1581 | * detected by the Target. | |
acd6859b | 1582 | */ |
9a6b09c0 | 1583 | /* DEADBEEF will be the reftag on the wire */ |
acd6859b JS |
1584 | *reftag = 0xDEADBEEF; |
1585 | phba->lpfc_injerr_wref_cnt--; | |
4ac9b226 JS |
1586 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1587 | phba->lpfc_injerr_nportid = 0; | |
1588 | phba->lpfc_injerr_lba = | |
1589 | LPFC_INJERR_LBA_OFF; | |
1590 | memset(&phba->lpfc_injerr_wwpn, | |
1591 | 0, sizeof(struct lpfc_name)); | |
1592 | } | |
9a6b09c0 | 1593 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
acd6859b JS |
1594 | |
1595 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1596 | "9078 BLKGRD: Injecting reftag error: " |
acd6859b JS |
1597 | "write lba x%lx\n", (unsigned long)lba); |
1598 | break; | |
9a6b09c0 | 1599 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1600 | /* |
9a6b09c0 JS |
1601 | * For WRITE_STRIP and WRITE_PASS, |
1602 | * force the error on data | |
1603 | * being copied from SLI-Host to SLI-Port. | |
acd6859b | 1604 | */ |
f9bb2da1 JS |
1605 | *reftag = 0xDEADBEEF; |
1606 | phba->lpfc_injerr_wref_cnt--; | |
4ac9b226 JS |
1607 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1608 | phba->lpfc_injerr_nportid = 0; | |
1609 | phba->lpfc_injerr_lba = | |
1610 | LPFC_INJERR_LBA_OFF; | |
1611 | memset(&phba->lpfc_injerr_wwpn, | |
1612 | 0, sizeof(struct lpfc_name)); | |
1613 | } | |
9a6b09c0 | 1614 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1615 | |
1616 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1617 | "9077 BLKGRD: Injecting reftag error: " |
f9bb2da1 | 1618 | "write lba x%lx\n", (unsigned long)lba); |
acd6859b | 1619 | break; |
f9bb2da1 | 1620 | } |
acd6859b JS |
1621 | } |
1622 | if (phba->lpfc_injerr_rref_cnt) { | |
1623 | switch (op) { | |
1624 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1625 | case SCSI_PROT_READ_STRIP: |
1626 | case SCSI_PROT_READ_PASS: | |
1627 | /* | |
1628 | * For READ_STRIP and READ_PASS, force the | |
1629 | * error on data being read off the wire. It | |
1630 | * should force an IO error to the driver. | |
1631 | */ | |
f9bb2da1 JS |
1632 | *reftag = 0xDEADBEEF; |
1633 | phba->lpfc_injerr_rref_cnt--; | |
4ac9b226 JS |
1634 | if (phba->lpfc_injerr_rref_cnt == 0) { |
1635 | phba->lpfc_injerr_nportid = 0; | |
1636 | phba->lpfc_injerr_lba = | |
1637 | LPFC_INJERR_LBA_OFF; | |
1638 | memset(&phba->lpfc_injerr_wwpn, | |
1639 | 0, sizeof(struct lpfc_name)); | |
1640 | } | |
acd6859b | 1641 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1642 | |
1643 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
acd6859b | 1644 | "9079 BLKGRD: Injecting reftag error: " |
f9bb2da1 | 1645 | "read lba x%lx\n", (unsigned long)lba); |
acd6859b | 1646 | break; |
f9bb2da1 JS |
1647 | } |
1648 | } | |
1649 | } | |
1650 | ||
1651 | /* Should we change the Application Tag */ | |
1652 | if (apptag) { | |
acd6859b JS |
1653 | if (phba->lpfc_injerr_wapp_cnt) { |
1654 | switch (op) { | |
1655 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1656 | if (src) { |
9a6b09c0 JS |
1657 | /* |
1658 | * For WRITE_PASS, force the error | |
1659 | * to be sent on the wire. It should | |
1660 | * be detected by the Target. | |
1661 | * If blockoff != 0 error will be | |
1662 | * inserted in middle of the IO. | |
1663 | */ | |
1664 | ||
acd6859b JS |
1665 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1666 | "9080 BLKGRD: Injecting apptag error: " | |
1667 | "write lba x%lx + x%x oldappTag x%x\n", | |
1668 | (unsigned long)lba, blockoff, | |
9a6b09c0 | 1669 | be16_to_cpu(src->app_tag)); |
acd6859b JS |
1670 | |
1671 | /* | |
9a6b09c0 JS |
1672 | * Save the old app_tag so we can |
1673 | * restore it on completion. | |
acd6859b | 1674 | */ |
9a6b09c0 JS |
1675 | if (lpfc_cmd) { |
1676 | lpfc_cmd->prot_data_type = | |
1677 | LPFC_INJERR_APPTAG; | |
1678 | lpfc_cmd->prot_data_segment = | |
1679 | src; | |
1680 | lpfc_cmd->prot_data = | |
1681 | src->app_tag; | |
1682 | } | |
1683 | src->app_tag = cpu_to_be16(0xDEAD); | |
acd6859b | 1684 | phba->lpfc_injerr_wapp_cnt--; |
4ac9b226 JS |
1685 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1686 | phba->lpfc_injerr_nportid = 0; | |
1687 | phba->lpfc_injerr_lba = | |
1688 | LPFC_INJERR_LBA_OFF; | |
1689 | memset(&phba->lpfc_injerr_wwpn, | |
1690 | 0, sizeof(struct lpfc_name)); | |
1691 | } | |
9a6b09c0 | 1692 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
acd6859b JS |
1693 | break; |
1694 | } | |
1695 | /* Drop thru */ | |
9a6b09c0 | 1696 | case SCSI_PROT_WRITE_INSERT: |
acd6859b | 1697 | /* |
9a6b09c0 JS |
1698 | * For WRITE_INSERT, force the |
1699 | * error to be sent on the wire. It should be | |
1700 | * detected by the Target. | |
acd6859b | 1701 | */ |
9a6b09c0 | 1702 | /* DEAD will be the apptag on the wire */ |
acd6859b JS |
1703 | *apptag = 0xDEAD; |
1704 | phba->lpfc_injerr_wapp_cnt--; | |
4ac9b226 JS |
1705 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1706 | phba->lpfc_injerr_nportid = 0; | |
1707 | phba->lpfc_injerr_lba = | |
1708 | LPFC_INJERR_LBA_OFF; | |
1709 | memset(&phba->lpfc_injerr_wwpn, | |
1710 | 0, sizeof(struct lpfc_name)); | |
1711 | } | |
9a6b09c0 | 1712 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
f9bb2da1 | 1713 | |
acd6859b | 1714 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
9a6b09c0 | 1715 | "0813 BLKGRD: Injecting apptag error: " |
acd6859b JS |
1716 | "write lba x%lx\n", (unsigned long)lba); |
1717 | break; | |
9a6b09c0 | 1718 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1719 | /* |
9a6b09c0 JS |
1720 | * For WRITE_STRIP and WRITE_PASS, |
1721 | * force the error on data | |
1722 | * being copied from SLI-Host to SLI-Port. | |
acd6859b | 1723 | */ |
f9bb2da1 JS |
1724 | *apptag = 0xDEAD; |
1725 | phba->lpfc_injerr_wapp_cnt--; | |
4ac9b226 JS |
1726 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1727 | phba->lpfc_injerr_nportid = 0; | |
1728 | phba->lpfc_injerr_lba = | |
1729 | LPFC_INJERR_LBA_OFF; | |
1730 | memset(&phba->lpfc_injerr_wwpn, | |
1731 | 0, sizeof(struct lpfc_name)); | |
1732 | } | |
9a6b09c0 | 1733 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1734 | |
1735 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1736 | "0812 BLKGRD: Injecting apptag error: " |
f9bb2da1 | 1737 | "write lba x%lx\n", (unsigned long)lba); |
acd6859b | 1738 | break; |
f9bb2da1 | 1739 | } |
acd6859b JS |
1740 | } |
1741 | if (phba->lpfc_injerr_rapp_cnt) { | |
1742 | switch (op) { | |
1743 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1744 | case SCSI_PROT_READ_STRIP: |
1745 | case SCSI_PROT_READ_PASS: | |
1746 | /* | |
1747 | * For READ_STRIP and READ_PASS, force the | |
1748 | * error on data being read off the wire. It | |
1749 | * should force an IO error to the driver. | |
1750 | */ | |
f9bb2da1 JS |
1751 | *apptag = 0xDEAD; |
1752 | phba->lpfc_injerr_rapp_cnt--; | |
4ac9b226 JS |
1753 | if (phba->lpfc_injerr_rapp_cnt == 0) { |
1754 | phba->lpfc_injerr_nportid = 0; | |
1755 | phba->lpfc_injerr_lba = | |
1756 | LPFC_INJERR_LBA_OFF; | |
1757 | memset(&phba->lpfc_injerr_wwpn, | |
1758 | 0, sizeof(struct lpfc_name)); | |
1759 | } | |
acd6859b | 1760 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1761 | |
1762 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
acd6859b | 1763 | "0814 BLKGRD: Injecting apptag error: " |
f9bb2da1 | 1764 | "read lba x%lx\n", (unsigned long)lba); |
acd6859b | 1765 | break; |
f9bb2da1 JS |
1766 | } |
1767 | } | |
1768 | } | |
1769 | ||
acd6859b | 1770 | |
f9bb2da1 | 1771 | /* Should we change the Guard Tag */ |
acd6859b JS |
1772 | if (new_guard) { |
1773 | if (phba->lpfc_injerr_wgrd_cnt) { | |
1774 | switch (op) { | |
1775 | case SCSI_PROT_WRITE_PASS: | |
9a6b09c0 | 1776 | rc = BG_ERR_CHECK; |
acd6859b | 1777 | /* Drop thru */ |
9a6b09c0 JS |
1778 | |
1779 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1780 | /* |
9a6b09c0 JS |
1781 | * For WRITE_INSERT, force the |
1782 | * error to be sent on the wire. It should be | |
1783 | * detected by the Target. | |
acd6859b JS |
1784 | */ |
1785 | phba->lpfc_injerr_wgrd_cnt--; | |
4ac9b226 JS |
1786 | if (phba->lpfc_injerr_wgrd_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 | } | |
f9bb2da1 | 1793 | |
9a6b09c0 | 1794 | rc |= BG_ERR_TGT | BG_ERR_SWAP; |
acd6859b | 1795 | /* Signals the caller to swap CRC->CSUM */ |
f9bb2da1 | 1796 | |
acd6859b | 1797 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
9a6b09c0 | 1798 | "0817 BLKGRD: Injecting guard error: " |
acd6859b JS |
1799 | "write lba x%lx\n", (unsigned long)lba); |
1800 | break; | |
9a6b09c0 | 1801 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1802 | /* |
9a6b09c0 JS |
1803 | * For WRITE_STRIP and WRITE_PASS, |
1804 | * force the error on data | |
1805 | * being copied from SLI-Host to SLI-Port. | |
acd6859b JS |
1806 | */ |
1807 | phba->lpfc_injerr_wgrd_cnt--; | |
4ac9b226 JS |
1808 | if (phba->lpfc_injerr_wgrd_cnt == 0) { |
1809 | phba->lpfc_injerr_nportid = 0; | |
1810 | phba->lpfc_injerr_lba = | |
1811 | LPFC_INJERR_LBA_OFF; | |
1812 | memset(&phba->lpfc_injerr_wwpn, | |
1813 | 0, sizeof(struct lpfc_name)); | |
1814 | } | |
f9bb2da1 | 1815 | |
9a6b09c0 | 1816 | rc = BG_ERR_INIT | BG_ERR_SWAP; |
acd6859b JS |
1817 | /* Signals the caller to swap CRC->CSUM */ |
1818 | ||
1819 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1820 | "0816 BLKGRD: Injecting guard error: " |
acd6859b JS |
1821 | "write lba x%lx\n", (unsigned long)lba); |
1822 | break; | |
1823 | } | |
1824 | } | |
1825 | if (phba->lpfc_injerr_rgrd_cnt) { | |
1826 | switch (op) { | |
1827 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1828 | case SCSI_PROT_READ_STRIP: |
1829 | case SCSI_PROT_READ_PASS: | |
1830 | /* | |
1831 | * For READ_STRIP and READ_PASS, force the | |
1832 | * error on data being read off the wire. It | |
1833 | * should force an IO error to the driver. | |
1834 | */ | |
acd6859b | 1835 | phba->lpfc_injerr_rgrd_cnt--; |
4ac9b226 JS |
1836 | if (phba->lpfc_injerr_rgrd_cnt == 0) { |
1837 | phba->lpfc_injerr_nportid = 0; | |
1838 | phba->lpfc_injerr_lba = | |
1839 | LPFC_INJERR_LBA_OFF; | |
1840 | memset(&phba->lpfc_injerr_wwpn, | |
1841 | 0, sizeof(struct lpfc_name)); | |
1842 | } | |
acd6859b | 1843 | |
9a6b09c0 | 1844 | rc = BG_ERR_INIT | BG_ERR_SWAP; |
acd6859b JS |
1845 | /* Signals the caller to swap CRC->CSUM */ |
1846 | ||
1847 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1848 | "0818 BLKGRD: Injecting guard error: " | |
1849 | "read lba x%lx\n", (unsigned long)lba); | |
1850 | } | |
f9bb2da1 JS |
1851 | } |
1852 | } | |
acd6859b | 1853 | |
f9bb2da1 JS |
1854 | return rc; |
1855 | } | |
1856 | #endif | |
1857 | ||
acd6859b JS |
1858 | /** |
1859 | * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with | |
1860 | * the specified SCSI command. | |
1861 | * @phba: The Hba for which this call is being executed. | |
6c8eea54 JS |
1862 | * @sc: The SCSI command to examine |
1863 | * @txopt: (out) BlockGuard operation for transmitted data | |
1864 | * @rxopt: (out) BlockGuard operation for received data | |
1865 | * | |
1866 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1867 | * | |
acd6859b | 1868 | **/ |
e2a0a9d6 | 1869 | static int |
6c8eea54 JS |
1870 | lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, |
1871 | uint8_t *txop, uint8_t *rxop) | |
e2a0a9d6 | 1872 | { |
6c8eea54 | 1873 | uint8_t ret = 0; |
e2a0a9d6 | 1874 | |
9c6aa9d7 | 1875 | if (lpfc_cmd_guard_csum(sc)) { |
e2a0a9d6 JS |
1876 | switch (scsi_get_prot_op(sc)) { |
1877 | case SCSI_PROT_READ_INSERT: | |
1878 | case SCSI_PROT_WRITE_STRIP: | |
6c8eea54 | 1879 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; |
4ac9b226 | 1880 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
e2a0a9d6 JS |
1881 | break; |
1882 | ||
1883 | case SCSI_PROT_READ_STRIP: | |
1884 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 | 1885 | *rxop = BG_OP_IN_CRC_OUT_NODIF; |
4ac9b226 | 1886 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
e2a0a9d6 JS |
1887 | break; |
1888 | ||
c6af4042 MP |
1889 | case SCSI_PROT_READ_PASS: |
1890 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 | 1891 | *rxop = BG_OP_IN_CRC_OUT_CSUM; |
4ac9b226 | 1892 | *txop = BG_OP_IN_CSUM_OUT_CRC; |
e2a0a9d6 JS |
1893 | break; |
1894 | ||
e2a0a9d6 JS |
1895 | case SCSI_PROT_NORMAL: |
1896 | default: | |
6a9c52cf | 1897 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1898 | "9063 BLKGRD: Bad op/guard:%d/IP combination\n", |
1899 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1900 | ret = 1; |
e2a0a9d6 JS |
1901 | break; |
1902 | ||
1903 | } | |
7c56b9fd | 1904 | } else { |
e2a0a9d6 JS |
1905 | switch (scsi_get_prot_op(sc)) { |
1906 | case SCSI_PROT_READ_STRIP: | |
1907 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 | 1908 | *rxop = BG_OP_IN_CRC_OUT_NODIF; |
4ac9b226 | 1909 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
e2a0a9d6 JS |
1910 | break; |
1911 | ||
1912 | case SCSI_PROT_READ_PASS: | |
1913 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 | 1914 | *rxop = BG_OP_IN_CRC_OUT_CRC; |
4ac9b226 | 1915 | *txop = BG_OP_IN_CRC_OUT_CRC; |
e2a0a9d6 JS |
1916 | break; |
1917 | ||
e2a0a9d6 JS |
1918 | case SCSI_PROT_READ_INSERT: |
1919 | case SCSI_PROT_WRITE_STRIP: | |
7c56b9fd | 1920 | *rxop = BG_OP_IN_NODIF_OUT_CRC; |
4ac9b226 | 1921 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
7c56b9fd JS |
1922 | break; |
1923 | ||
e2a0a9d6 JS |
1924 | case SCSI_PROT_NORMAL: |
1925 | default: | |
6a9c52cf | 1926 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1927 | "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", |
1928 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1929 | ret = 1; |
e2a0a9d6 JS |
1930 | break; |
1931 | } | |
e2a0a9d6 JS |
1932 | } |
1933 | ||
6c8eea54 | 1934 | return ret; |
e2a0a9d6 JS |
1935 | } |
1936 | ||
acd6859b JS |
1937 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1938 | /** | |
1939 | * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with | |
1940 | * the specified SCSI command in order to force a guard tag error. | |
1941 | * @phba: The Hba for which this call is being executed. | |
1942 | * @sc: The SCSI command to examine | |
1943 | * @txopt: (out) BlockGuard operation for transmitted data | |
1944 | * @rxopt: (out) BlockGuard operation for received data | |
1945 | * | |
1946 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1947 | * | |
1948 | **/ | |
1949 | static int | |
1950 | lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1951 | uint8_t *txop, uint8_t *rxop) | |
1952 | { | |
acd6859b JS |
1953 | uint8_t ret = 0; |
1954 | ||
9c6aa9d7 | 1955 | if (lpfc_cmd_guard_csum(sc)) { |
acd6859b JS |
1956 | switch (scsi_get_prot_op(sc)) { |
1957 | case SCSI_PROT_READ_INSERT: | |
1958 | case SCSI_PROT_WRITE_STRIP: | |
acd6859b | 1959 | *rxop = BG_OP_IN_NODIF_OUT_CRC; |
4ac9b226 | 1960 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
acd6859b JS |
1961 | break; |
1962 | ||
1963 | case SCSI_PROT_READ_STRIP: | |
1964 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1965 | *rxop = BG_OP_IN_CSUM_OUT_NODIF; |
4ac9b226 | 1966 | *txop = BG_OP_IN_NODIF_OUT_CSUM; |
acd6859b JS |
1967 | break; |
1968 | ||
1969 | case SCSI_PROT_READ_PASS: | |
1970 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1971 | *rxop = BG_OP_IN_CSUM_OUT_CRC; |
9a6b09c0 | 1972 | *txop = BG_OP_IN_CRC_OUT_CSUM; |
acd6859b JS |
1973 | break; |
1974 | ||
1975 | case SCSI_PROT_NORMAL: | |
1976 | default: | |
1977 | break; | |
1978 | ||
1979 | } | |
1980 | } else { | |
1981 | switch (scsi_get_prot_op(sc)) { | |
1982 | case SCSI_PROT_READ_STRIP: | |
1983 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1984 | *rxop = BG_OP_IN_CSUM_OUT_NODIF; |
4ac9b226 | 1985 | *txop = BG_OP_IN_NODIF_OUT_CSUM; |
acd6859b JS |
1986 | break; |
1987 | ||
1988 | case SCSI_PROT_READ_PASS: | |
1989 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1990 | *rxop = BG_OP_IN_CSUM_OUT_CSUM; |
9a6b09c0 | 1991 | *txop = BG_OP_IN_CSUM_OUT_CSUM; |
acd6859b JS |
1992 | break; |
1993 | ||
1994 | case SCSI_PROT_READ_INSERT: | |
1995 | case SCSI_PROT_WRITE_STRIP: | |
acd6859b | 1996 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; |
4ac9b226 | 1997 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
acd6859b JS |
1998 | break; |
1999 | ||
2000 | case SCSI_PROT_NORMAL: | |
2001 | default: | |
2002 | break; | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | return ret; | |
2007 | } | |
2008 | #endif | |
2009 | ||
2010 | /** | |
2011 | * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data | |
2012 | * @phba: The Hba for which this call is being executed. | |
2013 | * @sc: pointer to scsi command we're working on | |
2014 | * @bpl: pointer to buffer list for protection groups | |
2015 | * @datacnt: number of segments of data that have been dma mapped | |
2016 | * | |
2017 | * This function sets up BPL buffer list for protection groups of | |
e2a0a9d6 JS |
2018 | * type LPFC_PG_TYPE_NO_DIF |
2019 | * | |
2020 | * This is usually used when the HBA is instructed to generate | |
2021 | * DIFs and insert them into data stream (or strip DIF from | |
2022 | * incoming data stream) | |
2023 | * | |
2024 | * The buffer list consists of just one protection group described | |
2025 | * below: | |
2026 | * +-------------------------+ | |
6c8eea54 JS |
2027 | * start of prot group --> | PDE_5 | |
2028 | * +-------------------------+ | |
2029 | * | PDE_6 | | |
e2a0a9d6 JS |
2030 | * +-------------------------+ |
2031 | * | Data BDE | | |
2032 | * +-------------------------+ | |
2033 | * |more Data BDE's ... (opt)| | |
2034 | * +-------------------------+ | |
2035 | * | |
e2a0a9d6 JS |
2036 | * |
2037 | * Note: Data s/g buffers have been dma mapped | |
acd6859b JS |
2038 | * |
2039 | * Returns the number of BDEs added to the BPL. | |
2040 | **/ | |
e2a0a9d6 JS |
2041 | static int |
2042 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2043 | struct ulp_bde64 *bpl, int datasegcnt) | |
2044 | { | |
2045 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
6c8eea54 JS |
2046 | struct lpfc_pde5 *pde5 = NULL; |
2047 | struct lpfc_pde6 *pde6 = NULL; | |
e2a0a9d6 | 2048 | dma_addr_t physaddr; |
6c8eea54 | 2049 | int i = 0, num_bde = 0, status; |
e2a0a9d6 | 2050 | int datadir = sc->sc_data_direction; |
0829a19a | 2051 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2052 | uint32_t rc; |
0829a19a | 2053 | #endif |
acd6859b | 2054 | uint32_t checking = 1; |
e2a0a9d6 | 2055 | uint32_t reftag; |
7c56b9fd | 2056 | unsigned blksize; |
6c8eea54 | 2057 | uint8_t txop, rxop; |
e2a0a9d6 | 2058 | |
6c8eea54 JS |
2059 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
2060 | if (status) | |
e2a0a9d6 JS |
2061 | goto out; |
2062 | ||
6c8eea54 | 2063 | /* extract some info from the scsi command for pde*/ |
e2a0a9d6 | 2064 | blksize = lpfc_cmd_blksize(sc); |
acd6859b | 2065 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ |
e2a0a9d6 | 2066 | |
f9bb2da1 | 2067 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4ac9b226 | 2068 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2069 | if (rc) { |
9a6b09c0 | 2070 | if (rc & BG_ERR_SWAP) |
acd6859b | 2071 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2072 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2073 | checking = 0; |
2074 | } | |
f9bb2da1 JS |
2075 | #endif |
2076 | ||
6c8eea54 JS |
2077 | /* setup PDE5 with what we have */ |
2078 | pde5 = (struct lpfc_pde5 *) bpl; | |
2079 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
2080 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
6c8eea54 | 2081 | |
bc73905a | 2082 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 | 2083 | pde5->word0 = cpu_to_le32(pde5->word0); |
7c56b9fd | 2084 | pde5->reftag = cpu_to_le32(reftag); |
589a52d6 | 2085 | |
6c8eea54 JS |
2086 | /* advance bpl and increment bde count */ |
2087 | num_bde++; | |
2088 | bpl++; | |
2089 | pde6 = (struct lpfc_pde6 *) bpl; | |
2090 | ||
2091 | /* setup PDE6 with the rest of the info */ | |
2092 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
2093 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
2094 | bf_set(pde6_optx, pde6, txop); | |
2095 | bf_set(pde6_oprx, pde6, rxop); | |
a6887e28 JS |
2096 | |
2097 | /* | |
2098 | * We only need to check the data on READs, for WRITEs | |
2099 | * protection data is automatically generated, not checked. | |
2100 | */ | |
6c8eea54 | 2101 | if (datadir == DMA_FROM_DEVICE) { |
9c6aa9d7 | 2102 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) |
a6887e28 JS |
2103 | bf_set(pde6_ce, pde6, checking); |
2104 | else | |
2105 | bf_set(pde6_ce, pde6, 0); | |
2106 | ||
9c6aa9d7 | 2107 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2108 | bf_set(pde6_re, pde6, checking); |
2109 | else | |
2110 | bf_set(pde6_re, pde6, 0); | |
6c8eea54 JS |
2111 | } |
2112 | bf_set(pde6_ai, pde6, 1); | |
7c56b9fd JS |
2113 | bf_set(pde6_ae, pde6, 0); |
2114 | bf_set(pde6_apptagval, pde6, 0); | |
e2a0a9d6 | 2115 | |
bc73905a | 2116 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
2117 | pde6->word0 = cpu_to_le32(pde6->word0); |
2118 | pde6->word1 = cpu_to_le32(pde6->word1); | |
2119 | pde6->word2 = cpu_to_le32(pde6->word2); | |
2120 | ||
6c8eea54 | 2121 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
2122 | num_bde++; |
2123 | bpl++; | |
2124 | ||
2125 | /* assumption: caller has already run dma_map_sg on command data */ | |
2126 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
2127 | physaddr = sg_dma_address(sgde); | |
2128 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
2129 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
2130 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
2131 | if (datadir == DMA_TO_DEVICE) | |
2132 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
2133 | else | |
2134 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
2135 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
2136 | bpl++; | |
2137 | num_bde++; | |
2138 | } | |
2139 | ||
2140 | out: | |
2141 | return num_bde; | |
2142 | } | |
2143 | ||
acd6859b JS |
2144 | /** |
2145 | * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data | |
2146 | * @phba: The Hba for which this call is being executed. | |
2147 | * @sc: pointer to scsi command we're working on | |
2148 | * @bpl: pointer to buffer list for protection groups | |
2149 | * @datacnt: number of segments of data that have been dma mapped | |
2150 | * @protcnt: number of segment of protection data that have been dma mapped | |
2151 | * | |
2152 | * This function sets up BPL buffer list for protection groups of | |
2153 | * type LPFC_PG_TYPE_DIF | |
e2a0a9d6 JS |
2154 | * |
2155 | * This is usually used when DIFs are in their own buffers, | |
2156 | * separate from the data. The HBA can then by instructed | |
2157 | * to place the DIFs in the outgoing stream. For read operations, | |
2158 | * The HBA could extract the DIFs and place it in DIF buffers. | |
2159 | * | |
2160 | * The buffer list for this type consists of one or more of the | |
2161 | * protection groups described below: | |
2162 | * +-------------------------+ | |
6c8eea54 | 2163 | * start of first prot group --> | PDE_5 | |
e2a0a9d6 | 2164 | * +-------------------------+ |
6c8eea54 JS |
2165 | * | PDE_6 | |
2166 | * +-------------------------+ | |
2167 | * | PDE_7 (Prot BDE) | | |
e2a0a9d6 JS |
2168 | * +-------------------------+ |
2169 | * | Data BDE | | |
2170 | * +-------------------------+ | |
2171 | * |more Data BDE's ... (opt)| | |
2172 | * +-------------------------+ | |
6c8eea54 | 2173 | * start of new prot group --> | PDE_5 | |
e2a0a9d6 JS |
2174 | * +-------------------------+ |
2175 | * | ... | | |
2176 | * +-------------------------+ | |
2177 | * | |
e2a0a9d6 JS |
2178 | * Note: It is assumed that both data and protection s/g buffers have been |
2179 | * mapped for DMA | |
acd6859b JS |
2180 | * |
2181 | * Returns the number of BDEs added to the BPL. | |
2182 | **/ | |
e2a0a9d6 JS |
2183 | static int |
2184 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2185 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
2186 | { | |
2187 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2188 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
6c8eea54 JS |
2189 | struct lpfc_pde5 *pde5 = NULL; |
2190 | struct lpfc_pde6 *pde6 = NULL; | |
7f86059a | 2191 | struct lpfc_pde7 *pde7 = NULL; |
e2a0a9d6 JS |
2192 | dma_addr_t dataphysaddr, protphysaddr; |
2193 | unsigned short curr_data = 0, curr_prot = 0; | |
7f86059a JS |
2194 | unsigned int split_offset; |
2195 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
e2a0a9d6 JS |
2196 | unsigned int protgrp_blks, protgrp_bytes; |
2197 | unsigned int remainder, subtotal; | |
6c8eea54 | 2198 | int status; |
e2a0a9d6 JS |
2199 | int datadir = sc->sc_data_direction; |
2200 | unsigned char pgdone = 0, alldone = 0; | |
2201 | unsigned blksize; | |
0829a19a | 2202 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2203 | uint32_t rc; |
0829a19a | 2204 | #endif |
acd6859b | 2205 | uint32_t checking = 1; |
e2a0a9d6 | 2206 | uint32_t reftag; |
6c8eea54 | 2207 | uint8_t txop, rxop; |
e2a0a9d6 JS |
2208 | int num_bde = 0; |
2209 | ||
2210 | sgpe = scsi_prot_sglist(sc); | |
2211 | sgde = scsi_sglist(sc); | |
2212 | ||
2213 | if (!sgpe || !sgde) { | |
2214 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
acd6859b JS |
2215 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", |
2216 | sgpe, sgde); | |
2217 | return 0; | |
2218 | } | |
2219 | ||
2220 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); | |
2221 | if (status) | |
2222 | goto out; | |
2223 | ||
2224 | /* extract some info from the scsi command */ | |
2225 | blksize = lpfc_cmd_blksize(sc); | |
2226 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ | |
2227 | ||
2228 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
4ac9b226 | 2229 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2230 | if (rc) { |
9a6b09c0 | 2231 | if (rc & BG_ERR_SWAP) |
acd6859b | 2232 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2233 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2234 | checking = 0; |
2235 | } | |
2236 | #endif | |
2237 | ||
2238 | split_offset = 0; | |
2239 | do { | |
96f7077f JS |
2240 | /* Check to see if we ran out of space */ |
2241 | if (num_bde >= (phba->cfg_total_seg_cnt - 2)) | |
2242 | return num_bde + 3; | |
2243 | ||
acd6859b JS |
2244 | /* setup PDE5 with what we have */ |
2245 | pde5 = (struct lpfc_pde5 *) bpl; | |
2246 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
2247 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
2248 | ||
2249 | /* Endianness conversion if necessary for PDE5 */ | |
2250 | pde5->word0 = cpu_to_le32(pde5->word0); | |
2251 | pde5->reftag = cpu_to_le32(reftag); | |
2252 | ||
2253 | /* advance bpl and increment bde count */ | |
2254 | num_bde++; | |
2255 | bpl++; | |
2256 | pde6 = (struct lpfc_pde6 *) bpl; | |
2257 | ||
2258 | /* setup PDE6 with the rest of the info */ | |
2259 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
2260 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
2261 | bf_set(pde6_optx, pde6, txop); | |
2262 | bf_set(pde6_oprx, pde6, rxop); | |
a6887e28 | 2263 | |
9c6aa9d7 | 2264 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) |
a6887e28 JS |
2265 | bf_set(pde6_ce, pde6, checking); |
2266 | else | |
2267 | bf_set(pde6_ce, pde6, 0); | |
2268 | ||
9c6aa9d7 | 2269 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2270 | bf_set(pde6_re, pde6, checking); |
2271 | else | |
2272 | bf_set(pde6_re, pde6, 0); | |
2273 | ||
acd6859b JS |
2274 | bf_set(pde6_ai, pde6, 1); |
2275 | bf_set(pde6_ae, pde6, 0); | |
2276 | bf_set(pde6_apptagval, pde6, 0); | |
2277 | ||
2278 | /* Endianness conversion if necessary for PDE6 */ | |
2279 | pde6->word0 = cpu_to_le32(pde6->word0); | |
2280 | pde6->word1 = cpu_to_le32(pde6->word1); | |
2281 | pde6->word2 = cpu_to_le32(pde6->word2); | |
2282 | ||
2283 | /* advance bpl and increment bde count */ | |
2284 | num_bde++; | |
2285 | bpl++; | |
2286 | ||
2287 | /* setup the first BDE that points to protection buffer */ | |
2288 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; | |
2289 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
2290 | ||
2291 | /* must be integer multiple of the DIF block length */ | |
2292 | BUG_ON(protgroup_len % 8); | |
2293 | ||
2294 | pde7 = (struct lpfc_pde7 *) bpl; | |
2295 | memset(pde7, 0, sizeof(struct lpfc_pde7)); | |
2296 | bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); | |
2297 | ||
2298 | pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
2299 | pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
2300 | ||
2301 | protgrp_blks = protgroup_len / 8; | |
2302 | protgrp_bytes = protgrp_blks * blksize; | |
2303 | ||
2304 | /* check if this pde is crossing the 4K boundary; if so split */ | |
2305 | if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { | |
2306 | protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); | |
2307 | protgroup_offset += protgroup_remainder; | |
2308 | protgrp_blks = protgroup_remainder / 8; | |
2309 | protgrp_bytes = protgrp_blks * blksize; | |
2310 | } else { | |
2311 | protgroup_offset = 0; | |
2312 | curr_prot++; | |
2313 | } | |
2314 | ||
2315 | num_bde++; | |
2316 | ||
2317 | /* setup BDE's for data blocks associated with DIF data */ | |
2318 | pgdone = 0; | |
2319 | subtotal = 0; /* total bytes processed for current prot grp */ | |
2320 | while (!pgdone) { | |
96f7077f JS |
2321 | /* Check to see if we ran out of space */ |
2322 | if (num_bde >= phba->cfg_total_seg_cnt) | |
2323 | return num_bde + 1; | |
2324 | ||
acd6859b JS |
2325 | if (!sgde) { |
2326 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
2327 | "9065 BLKGRD:%s Invalid data segment\n", | |
2328 | __func__); | |
2329 | return 0; | |
2330 | } | |
2331 | bpl++; | |
2332 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
2333 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
2334 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
2335 | ||
2336 | remainder = sg_dma_len(sgde) - split_offset; | |
2337 | ||
2338 | if ((subtotal + remainder) <= protgrp_bytes) { | |
2339 | /* we can use this whole buffer */ | |
2340 | bpl->tus.f.bdeSize = remainder; | |
2341 | split_offset = 0; | |
2342 | ||
2343 | if ((subtotal + remainder) == protgrp_bytes) | |
2344 | pgdone = 1; | |
2345 | } else { | |
2346 | /* must split this buffer with next prot grp */ | |
2347 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
2348 | split_offset += bpl->tus.f.bdeSize; | |
2349 | } | |
2350 | ||
2351 | subtotal += bpl->tus.f.bdeSize; | |
2352 | ||
2353 | if (datadir == DMA_TO_DEVICE) | |
2354 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
2355 | else | |
2356 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
2357 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
2358 | ||
2359 | num_bde++; | |
2360 | curr_data++; | |
2361 | ||
2362 | if (split_offset) | |
2363 | break; | |
2364 | ||
2365 | /* Move to the next s/g segment if possible */ | |
2366 | sgde = sg_next(sgde); | |
2367 | ||
2368 | } | |
2369 | ||
2370 | if (protgroup_offset) { | |
2371 | /* update the reference tag */ | |
2372 | reftag += protgrp_blks; | |
2373 | bpl++; | |
2374 | continue; | |
2375 | } | |
2376 | ||
2377 | /* are we done ? */ | |
2378 | if (curr_prot == protcnt) { | |
2379 | alldone = 1; | |
2380 | } else if (curr_prot < protcnt) { | |
2381 | /* advance to next prot buffer */ | |
2382 | sgpe = sg_next(sgpe); | |
2383 | bpl++; | |
2384 | ||
2385 | /* update the reference tag */ | |
2386 | reftag += protgrp_blks; | |
2387 | } else { | |
2388 | /* if we're here, we have a bug */ | |
2389 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
2390 | "9054 BLKGRD: bug in %s\n", __func__); | |
2391 | } | |
2392 | ||
2393 | } while (!alldone); | |
2394 | out: | |
2395 | ||
2396 | return num_bde; | |
2397 | } | |
2398 | ||
2399 | /** | |
2400 | * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data | |
2401 | * @phba: The Hba for which this call is being executed. | |
2402 | * @sc: pointer to scsi command we're working on | |
2403 | * @sgl: pointer to buffer list for protection groups | |
2404 | * @datacnt: number of segments of data that have been dma mapped | |
2405 | * | |
2406 | * This function sets up SGL buffer list for protection groups of | |
2407 | * type LPFC_PG_TYPE_NO_DIF | |
2408 | * | |
2409 | * This is usually used when the HBA is instructed to generate | |
2410 | * DIFs and insert them into data stream (or strip DIF from | |
2411 | * incoming data stream) | |
2412 | * | |
2413 | * The buffer list consists of just one protection group described | |
2414 | * below: | |
2415 | * +-------------------------+ | |
2416 | * start of prot group --> | DI_SEED | | |
2417 | * +-------------------------+ | |
2418 | * | Data SGE | | |
2419 | * +-------------------------+ | |
2420 | * |more Data SGE's ... (opt)| | |
2421 | * +-------------------------+ | |
2422 | * | |
2423 | * | |
2424 | * Note: Data s/g buffers have been dma mapped | |
2425 | * | |
2426 | * Returns the number of SGEs added to the SGL. | |
2427 | **/ | |
2428 | static int | |
2429 | lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2430 | struct sli4_sge *sgl, int datasegcnt) | |
2431 | { | |
2432 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2433 | struct sli4_sge_diseed *diseed = NULL; | |
2434 | dma_addr_t physaddr; | |
2435 | int i = 0, num_sge = 0, status; | |
acd6859b JS |
2436 | uint32_t reftag; |
2437 | unsigned blksize; | |
2438 | uint8_t txop, rxop; | |
0829a19a | 2439 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2440 | uint32_t rc; |
0829a19a | 2441 | #endif |
acd6859b JS |
2442 | uint32_t checking = 1; |
2443 | uint32_t dma_len; | |
2444 | uint32_t dma_offset = 0; | |
2445 | ||
2446 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); | |
2447 | if (status) | |
2448 | goto out; | |
2449 | ||
2450 | /* extract some info from the scsi command for pde*/ | |
2451 | blksize = lpfc_cmd_blksize(sc); | |
2452 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ | |
2453 | ||
2454 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
4ac9b226 | 2455 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2456 | if (rc) { |
9a6b09c0 | 2457 | if (rc & BG_ERR_SWAP) |
acd6859b | 2458 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2459 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2460 | checking = 0; |
2461 | } | |
2462 | #endif | |
2463 | ||
2464 | /* setup DISEED with what we have */ | |
2465 | diseed = (struct sli4_sge_diseed *) sgl; | |
2466 | memset(diseed, 0, sizeof(struct sli4_sge_diseed)); | |
2467 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); | |
2468 | ||
2469 | /* Endianness conversion if necessary */ | |
2470 | diseed->ref_tag = cpu_to_le32(reftag); | |
2471 | diseed->ref_tag_tran = diseed->ref_tag; | |
2472 | ||
a6887e28 JS |
2473 | /* |
2474 | * We only need to check the data on READs, for WRITEs | |
2475 | * protection data is automatically generated, not checked. | |
2476 | */ | |
2477 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { | |
9c6aa9d7 | 2478 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) |
a6887e28 JS |
2479 | bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); |
2480 | else | |
2481 | bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); | |
2482 | ||
9c6aa9d7 | 2483 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2484 | bf_set(lpfc_sli4_sge_dif_re, diseed, checking); |
2485 | else | |
2486 | bf_set(lpfc_sli4_sge_dif_re, diseed, 0); | |
2487 | } | |
2488 | ||
acd6859b JS |
2489 | /* setup DISEED with the rest of the info */ |
2490 | bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); | |
2491 | bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); | |
a6887e28 | 2492 | |
acd6859b JS |
2493 | bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); |
2494 | bf_set(lpfc_sli4_sge_dif_me, diseed, 0); | |
2495 | ||
2496 | /* Endianness conversion if necessary for DISEED */ | |
2497 | diseed->word2 = cpu_to_le32(diseed->word2); | |
2498 | diseed->word3 = cpu_to_le32(diseed->word3); | |
2499 | ||
2500 | /* advance bpl and increment sge count */ | |
2501 | num_sge++; | |
2502 | sgl++; | |
2503 | ||
2504 | /* assumption: caller has already run dma_map_sg on command data */ | |
2505 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
2506 | physaddr = sg_dma_address(sgde); | |
2507 | dma_len = sg_dma_len(sgde); | |
2508 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); | |
2509 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
2510 | if ((i + 1) == datasegcnt) | |
2511 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
2512 | else | |
2513 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2514 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
2515 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
2516 | ||
2517 | sgl->sge_len = cpu_to_le32(dma_len); | |
2518 | dma_offset += dma_len; | |
2519 | ||
2520 | sgl++; | |
2521 | num_sge++; | |
2522 | } | |
2523 | ||
2524 | out: | |
2525 | return num_sge; | |
2526 | } | |
2527 | ||
2528 | /** | |
2529 | * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data | |
2530 | * @phba: The Hba for which this call is being executed. | |
2531 | * @sc: pointer to scsi command we're working on | |
2532 | * @sgl: pointer to buffer list for protection groups | |
2533 | * @datacnt: number of segments of data that have been dma mapped | |
2534 | * @protcnt: number of segment of protection data that have been dma mapped | |
2535 | * | |
2536 | * This function sets up SGL buffer list for protection groups of | |
2537 | * type LPFC_PG_TYPE_DIF | |
2538 | * | |
2539 | * This is usually used when DIFs are in their own buffers, | |
2540 | * separate from the data. The HBA can then by instructed | |
2541 | * to place the DIFs in the outgoing stream. For read operations, | |
2542 | * The HBA could extract the DIFs and place it in DIF buffers. | |
2543 | * | |
2544 | * The buffer list for this type consists of one or more of the | |
2545 | * protection groups described below: | |
2546 | * +-------------------------+ | |
2547 | * start of first prot group --> | DISEED | | |
2548 | * +-------------------------+ | |
2549 | * | DIF (Prot SGE) | | |
2550 | * +-------------------------+ | |
2551 | * | Data SGE | | |
2552 | * +-------------------------+ | |
2553 | * |more Data SGE's ... (opt)| | |
2554 | * +-------------------------+ | |
2555 | * start of new prot group --> | DISEED | | |
2556 | * +-------------------------+ | |
2557 | * | ... | | |
2558 | * +-------------------------+ | |
2559 | * | |
2560 | * Note: It is assumed that both data and protection s/g buffers have been | |
2561 | * mapped for DMA | |
2562 | * | |
2563 | * Returns the number of SGEs added to the SGL. | |
2564 | **/ | |
2565 | static int | |
2566 | lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2567 | struct sli4_sge *sgl, int datacnt, int protcnt) | |
2568 | { | |
2569 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2570 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
2571 | struct sli4_sge_diseed *diseed = NULL; | |
2572 | dma_addr_t dataphysaddr, protphysaddr; | |
2573 | unsigned short curr_data = 0, curr_prot = 0; | |
2574 | unsigned int split_offset; | |
2575 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
2576 | unsigned int protgrp_blks, protgrp_bytes; | |
2577 | unsigned int remainder, subtotal; | |
2578 | int status; | |
2579 | unsigned char pgdone = 0, alldone = 0; | |
2580 | unsigned blksize; | |
2581 | uint32_t reftag; | |
2582 | uint8_t txop, rxop; | |
2583 | uint32_t dma_len; | |
0829a19a | 2584 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2585 | uint32_t rc; |
0829a19a | 2586 | #endif |
acd6859b JS |
2587 | uint32_t checking = 1; |
2588 | uint32_t dma_offset = 0; | |
2589 | int num_sge = 0; | |
2590 | ||
2591 | sgpe = scsi_prot_sglist(sc); | |
2592 | sgde = scsi_sglist(sc); | |
2593 | ||
2594 | if (!sgpe || !sgde) { | |
2595 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2596 | "9082 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
e2a0a9d6 JS |
2597 | sgpe, sgde); |
2598 | return 0; | |
2599 | } | |
2600 | ||
6c8eea54 JS |
2601 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
2602 | if (status) | |
e2a0a9d6 JS |
2603 | goto out; |
2604 | ||
6c8eea54 | 2605 | /* extract some info from the scsi command */ |
e2a0a9d6 | 2606 | blksize = lpfc_cmd_blksize(sc); |
acd6859b | 2607 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ |
e2a0a9d6 | 2608 | |
f9bb2da1 | 2609 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4ac9b226 | 2610 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2611 | if (rc) { |
9a6b09c0 | 2612 | if (rc & BG_ERR_SWAP) |
acd6859b | 2613 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2614 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2615 | checking = 0; |
2616 | } | |
f9bb2da1 JS |
2617 | #endif |
2618 | ||
e2a0a9d6 JS |
2619 | split_offset = 0; |
2620 | do { | |
96f7077f JS |
2621 | /* Check to see if we ran out of space */ |
2622 | if (num_sge >= (phba->cfg_total_seg_cnt - 2)) | |
2623 | return num_sge + 3; | |
2624 | ||
acd6859b JS |
2625 | /* setup DISEED with what we have */ |
2626 | diseed = (struct sli4_sge_diseed *) sgl; | |
2627 | memset(diseed, 0, sizeof(struct sli4_sge_diseed)); | |
2628 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); | |
2629 | ||
2630 | /* Endianness conversion if necessary */ | |
2631 | diseed->ref_tag = cpu_to_le32(reftag); | |
2632 | diseed->ref_tag_tran = diseed->ref_tag; | |
2633 | ||
9c6aa9d7 | 2634 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) { |
a6887e28 JS |
2635 | bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); |
2636 | ||
2637 | } else { | |
2638 | bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); | |
2639 | /* | |
2640 | * When in this mode, the hardware will replace | |
2641 | * the guard tag from the host with a | |
2642 | * newly generated good CRC for the wire. | |
2643 | * Switch to raw mode here to avoid this | |
2644 | * behavior. What the host sends gets put on the wire. | |
2645 | */ | |
2646 | if (txop == BG_OP_IN_CRC_OUT_CRC) { | |
2647 | txop = BG_OP_RAW_MODE; | |
2648 | rxop = BG_OP_RAW_MODE; | |
2649 | } | |
2650 | } | |
2651 | ||
2652 | ||
9c6aa9d7 | 2653 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2654 | bf_set(lpfc_sli4_sge_dif_re, diseed, checking); |
2655 | else | |
2656 | bf_set(lpfc_sli4_sge_dif_re, diseed, 0); | |
2657 | ||
acd6859b JS |
2658 | /* setup DISEED with the rest of the info */ |
2659 | bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); | |
2660 | bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); | |
a6887e28 | 2661 | |
acd6859b JS |
2662 | bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); |
2663 | bf_set(lpfc_sli4_sge_dif_me, diseed, 0); | |
2664 | ||
2665 | /* Endianness conversion if necessary for DISEED */ | |
2666 | diseed->word2 = cpu_to_le32(diseed->word2); | |
2667 | diseed->word3 = cpu_to_le32(diseed->word3); | |
2668 | ||
2669 | /* advance sgl and increment bde count */ | |
2670 | num_sge++; | |
2671 | sgl++; | |
e2a0a9d6 JS |
2672 | |
2673 | /* setup the first BDE that points to protection buffer */ | |
7f86059a JS |
2674 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; |
2675 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
e2a0a9d6 | 2676 | |
e2a0a9d6 JS |
2677 | /* must be integer multiple of the DIF block length */ |
2678 | BUG_ON(protgroup_len % 8); | |
2679 | ||
acd6859b JS |
2680 | /* Now setup DIF SGE */ |
2681 | sgl->word2 = 0; | |
2682 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); | |
2683 | sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
2684 | sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); | |
2685 | sgl->word2 = cpu_to_le32(sgl->word2); | |
7f86059a | 2686 | |
e2a0a9d6 JS |
2687 | protgrp_blks = protgroup_len / 8; |
2688 | protgrp_bytes = protgrp_blks * blksize; | |
2689 | ||
acd6859b JS |
2690 | /* check if DIF SGE is crossing the 4K boundary; if so split */ |
2691 | if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { | |
2692 | protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); | |
7f86059a JS |
2693 | protgroup_offset += protgroup_remainder; |
2694 | protgrp_blks = protgroup_remainder / 8; | |
7c56b9fd | 2695 | protgrp_bytes = protgrp_blks * blksize; |
7f86059a JS |
2696 | } else { |
2697 | protgroup_offset = 0; | |
2698 | curr_prot++; | |
2699 | } | |
e2a0a9d6 | 2700 | |
acd6859b | 2701 | num_sge++; |
e2a0a9d6 | 2702 | |
acd6859b | 2703 | /* setup SGE's for data blocks associated with DIF data */ |
e2a0a9d6 JS |
2704 | pgdone = 0; |
2705 | subtotal = 0; /* total bytes processed for current prot grp */ | |
2706 | while (!pgdone) { | |
96f7077f JS |
2707 | /* Check to see if we ran out of space */ |
2708 | if (num_sge >= phba->cfg_total_seg_cnt) | |
2709 | return num_sge + 1; | |
2710 | ||
e2a0a9d6 | 2711 | if (!sgde) { |
6a9c52cf | 2712 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
acd6859b | 2713 | "9086 BLKGRD:%s Invalid data segment\n", |
e2a0a9d6 JS |
2714 | __func__); |
2715 | return 0; | |
2716 | } | |
acd6859b | 2717 | sgl++; |
e2a0a9d6 | 2718 | dataphysaddr = sg_dma_address(sgde) + split_offset; |
e2a0a9d6 JS |
2719 | |
2720 | remainder = sg_dma_len(sgde) - split_offset; | |
2721 | ||
2722 | if ((subtotal + remainder) <= protgrp_bytes) { | |
2723 | /* we can use this whole buffer */ | |
acd6859b | 2724 | dma_len = remainder; |
e2a0a9d6 JS |
2725 | split_offset = 0; |
2726 | ||
2727 | if ((subtotal + remainder) == protgrp_bytes) | |
2728 | pgdone = 1; | |
2729 | } else { | |
2730 | /* must split this buffer with next prot grp */ | |
acd6859b JS |
2731 | dma_len = protgrp_bytes - subtotal; |
2732 | split_offset += dma_len; | |
e2a0a9d6 JS |
2733 | } |
2734 | ||
acd6859b | 2735 | subtotal += dma_len; |
e2a0a9d6 | 2736 | |
acd6859b JS |
2737 | sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr)); |
2738 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr)); | |
2739 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2740 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
2741 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
e2a0a9d6 | 2742 | |
acd6859b JS |
2743 | sgl->sge_len = cpu_to_le32(dma_len); |
2744 | dma_offset += dma_len; | |
2745 | ||
2746 | num_sge++; | |
e2a0a9d6 JS |
2747 | curr_data++; |
2748 | ||
2749 | if (split_offset) | |
2750 | break; | |
2751 | ||
2752 | /* Move to the next s/g segment if possible */ | |
2753 | sgde = sg_next(sgde); | |
2754 | } | |
2755 | ||
7f86059a JS |
2756 | if (protgroup_offset) { |
2757 | /* update the reference tag */ | |
2758 | reftag += protgrp_blks; | |
acd6859b | 2759 | sgl++; |
7f86059a JS |
2760 | continue; |
2761 | } | |
2762 | ||
e2a0a9d6 JS |
2763 | /* are we done ? */ |
2764 | if (curr_prot == protcnt) { | |
acd6859b | 2765 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
e2a0a9d6 JS |
2766 | alldone = 1; |
2767 | } else if (curr_prot < protcnt) { | |
2768 | /* advance to next prot buffer */ | |
2769 | sgpe = sg_next(sgpe); | |
acd6859b | 2770 | sgl++; |
e2a0a9d6 JS |
2771 | |
2772 | /* update the reference tag */ | |
2773 | reftag += protgrp_blks; | |
2774 | } else { | |
2775 | /* if we're here, we have a bug */ | |
6a9c52cf | 2776 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
acd6859b | 2777 | "9085 BLKGRD: bug in %s\n", __func__); |
e2a0a9d6 JS |
2778 | } |
2779 | ||
2780 | } while (!alldone); | |
acd6859b | 2781 | |
e2a0a9d6 JS |
2782 | out: |
2783 | ||
acd6859b | 2784 | return num_sge; |
e2a0a9d6 | 2785 | } |
7f86059a | 2786 | |
acd6859b JS |
2787 | /** |
2788 | * lpfc_prot_group_type - Get prtotection group type of SCSI command | |
2789 | * @phba: The Hba for which this call is being executed. | |
2790 | * @sc: pointer to scsi command we're working on | |
2791 | * | |
e2a0a9d6 JS |
2792 | * Given a SCSI command that supports DIF, determine composition of protection |
2793 | * groups involved in setting up buffer lists | |
2794 | * | |
acd6859b JS |
2795 | * Returns: Protection group type (with or without DIF) |
2796 | * | |
2797 | **/ | |
e2a0a9d6 JS |
2798 | static int |
2799 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
2800 | { | |
2801 | int ret = LPFC_PG_TYPE_INVALID; | |
2802 | unsigned char op = scsi_get_prot_op(sc); | |
2803 | ||
2804 | switch (op) { | |
2805 | case SCSI_PROT_READ_STRIP: | |
2806 | case SCSI_PROT_WRITE_INSERT: | |
2807 | ret = LPFC_PG_TYPE_NO_DIF; | |
2808 | break; | |
2809 | case SCSI_PROT_READ_INSERT: | |
2810 | case SCSI_PROT_WRITE_STRIP: | |
2811 | case SCSI_PROT_READ_PASS: | |
2812 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
2813 | ret = LPFC_PG_TYPE_DIF_BUF; |
2814 | break; | |
2815 | default: | |
9c6aa9d7 JS |
2816 | if (phba) |
2817 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2818 | "9021 Unsupported protection op:%d\n", | |
2819 | op); | |
e2a0a9d6 JS |
2820 | break; |
2821 | } | |
e2a0a9d6 JS |
2822 | return ret; |
2823 | } | |
2824 | ||
a6887e28 JS |
2825 | /** |
2826 | * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard | |
2827 | * @phba: The Hba for which this call is being executed. | |
2828 | * @lpfc_cmd: The scsi buffer which is going to be adjusted. | |
2829 | * | |
2830 | * Adjust the data length to account for how much data | |
2831 | * is actually on the wire. | |
2832 | * | |
2833 | * returns the adjusted data length | |
2834 | **/ | |
2835 | static int | |
2836 | lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, | |
2837 | struct lpfc_scsi_buf *lpfc_cmd) | |
2838 | { | |
2839 | struct scsi_cmnd *sc = lpfc_cmd->pCmd; | |
2840 | int fcpdl; | |
2841 | ||
2842 | fcpdl = scsi_bufflen(sc); | |
2843 | ||
2844 | /* Check if there is protection data on the wire */ | |
2845 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { | |
9c6aa9d7 | 2846 | /* Read check for protection data */ |
a6887e28 JS |
2847 | if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) |
2848 | return fcpdl; | |
2849 | ||
2850 | } else { | |
9c6aa9d7 | 2851 | /* Write check for protection data */ |
a6887e28 JS |
2852 | if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) |
2853 | return fcpdl; | |
2854 | } | |
2855 | ||
2856 | /* | |
2857 | * If we are in DIF Type 1 mode every data block has a 8 byte | |
9c6aa9d7 JS |
2858 | * DIF (trailer) attached to it. Must ajust FCP data length |
2859 | * to account for the protection data. | |
a6887e28 | 2860 | */ |
9c6aa9d7 | 2861 | fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8; |
a6887e28 JS |
2862 | |
2863 | return fcpdl; | |
2864 | } | |
2865 | ||
acd6859b JS |
2866 | /** |
2867 | * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
2868 | * @phba: The Hba for which this call is being executed. | |
2869 | * @lpfc_cmd: The scsi buffer which is going to be prep'ed. | |
2870 | * | |
e2a0a9d6 JS |
2871 | * This is the protection/DIF aware version of |
2872 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
2873 | * two functions eventually, but for now, it's here | |
acd6859b | 2874 | **/ |
e2a0a9d6 | 2875 | static int |
acd6859b | 2876 | lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, |
e2a0a9d6 JS |
2877 | struct lpfc_scsi_buf *lpfc_cmd) |
2878 | { | |
2879 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
2880 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2881 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
2882 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2883 | uint32_t num_bde = 0; | |
2884 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
2885 | int prot_group_type = 0; | |
a6887e28 | 2886 | int fcpdl; |
e2a0a9d6 JS |
2887 | |
2888 | /* | |
2889 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
2890 | * fcp_rsp regions to the first data bde entry | |
2891 | */ | |
2892 | bpl += 2; | |
2893 | if (scsi_sg_count(scsi_cmnd)) { | |
2894 | /* | |
2895 | * The driver stores the segment count returned from pci_map_sg | |
2896 | * because this a count of dma-mappings used to map the use_sg | |
2897 | * pages. They are not guaranteed to be the same for those | |
2898 | * architectures that implement an IOMMU. | |
2899 | */ | |
2900 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
2901 | scsi_sglist(scsi_cmnd), | |
2902 | scsi_sg_count(scsi_cmnd), datadir); | |
2903 | if (unlikely(!datasegcnt)) | |
2904 | return 1; | |
2905 | ||
2906 | lpfc_cmd->seg_cnt = datasegcnt; | |
96f7077f JS |
2907 | |
2908 | /* First check if data segment count from SCSI Layer is good */ | |
2909 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) | |
2910 | goto err; | |
e2a0a9d6 JS |
2911 | |
2912 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
2913 | ||
2914 | switch (prot_group_type) { | |
2915 | case LPFC_PG_TYPE_NO_DIF: | |
96f7077f JS |
2916 | |
2917 | /* Here we need to add a PDE5 and PDE6 to the count */ | |
2918 | if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) | |
2919 | goto err; | |
2920 | ||
e2a0a9d6 JS |
2921 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, |
2922 | datasegcnt); | |
c9404c9c | 2923 | /* we should have 2 or more entries in buffer list */ |
e2a0a9d6 JS |
2924 | if (num_bde < 2) |
2925 | goto err; | |
2926 | break; | |
96f7077f JS |
2927 | |
2928 | case LPFC_PG_TYPE_DIF_BUF: | |
e2a0a9d6 JS |
2929 | /* |
2930 | * This type indicates that protection buffers are | |
2931 | * passed to the driver, so that needs to be prepared | |
2932 | * for DMA | |
2933 | */ | |
2934 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
2935 | scsi_prot_sglist(scsi_cmnd), | |
2936 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
2937 | if (unlikely(!protsegcnt)) { | |
2938 | scsi_dma_unmap(scsi_cmnd); | |
2939 | return 1; | |
2940 | } | |
2941 | ||
2942 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
96f7077f JS |
2943 | |
2944 | /* | |
2945 | * There is a minimun of 4 BPLs used for every | |
2946 | * protection data segment. | |
2947 | */ | |
2948 | if ((lpfc_cmd->prot_seg_cnt * 4) > | |
2949 | (phba->cfg_total_seg_cnt - 2)) | |
2950 | goto err; | |
e2a0a9d6 JS |
2951 | |
2952 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
2953 | datasegcnt, protsegcnt); | |
c9404c9c | 2954 | /* we should have 3 or more entries in buffer list */ |
96f7077f JS |
2955 | if ((num_bde < 3) || |
2956 | (num_bde > phba->cfg_total_seg_cnt)) | |
e2a0a9d6 JS |
2957 | goto err; |
2958 | break; | |
96f7077f | 2959 | |
e2a0a9d6 JS |
2960 | case LPFC_PG_TYPE_INVALID: |
2961 | default: | |
96f7077f JS |
2962 | scsi_dma_unmap(scsi_cmnd); |
2963 | lpfc_cmd->seg_cnt = 0; | |
2964 | ||
e2a0a9d6 JS |
2965 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
2966 | "9022 Unexpected protection group %i\n", | |
2967 | prot_group_type); | |
2968 | return 1; | |
2969 | } | |
2970 | } | |
2971 | ||
2972 | /* | |
2973 | * Finish initializing those IOCB fields that are dependent on the | |
2974 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
2975 | * reinitialized since all iocb memory resources are used many times | |
2976 | * for transmit, receive, and continuation bpl's. | |
2977 | */ | |
2978 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
2979 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
2980 | iocb_cmd->ulpBdeCount = 1; | |
2981 | iocb_cmd->ulpLe = 1; | |
2982 | ||
a6887e28 | 2983 | fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); |
e2a0a9d6 JS |
2984 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); |
2985 | ||
2986 | /* | |
2987 | * Due to difference in data length between DIF/non-DIF paths, | |
2988 | * we need to set word 4 of IOCB here | |
2989 | */ | |
2990 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
2991 | ||
dea3101e | 2992 | return 0; |
e2a0a9d6 | 2993 | err: |
96f7077f JS |
2994 | if (lpfc_cmd->seg_cnt) |
2995 | scsi_dma_unmap(scsi_cmnd); | |
2996 | if (lpfc_cmd->prot_seg_cnt) | |
2997 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), | |
2998 | scsi_prot_sg_count(scsi_cmnd), | |
2999 | scsi_cmnd->sc_data_direction); | |
3000 | ||
e2a0a9d6 | 3001 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
96f7077f JS |
3002 | "9023 Cannot setup S/G List for HBA" |
3003 | "IO segs %d/%d BPL %d SCSI %d: %d %d\n", | |
3004 | lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, | |
3005 | phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, | |
e2a0a9d6 | 3006 | prot_group_type, num_bde); |
96f7077f JS |
3007 | |
3008 | lpfc_cmd->seg_cnt = 0; | |
3009 | lpfc_cmd->prot_seg_cnt = 0; | |
e2a0a9d6 JS |
3010 | return 1; |
3011 | } | |
3012 | ||
737d4248 JS |
3013 | /* |
3014 | * This function calcuates the T10 DIF guard tag | |
3015 | * on the specified data using a CRC algorithmn | |
3016 | * using crc_t10dif. | |
3017 | */ | |
3018 | uint16_t | |
3019 | lpfc_bg_crc(uint8_t *data, int count) | |
3020 | { | |
3021 | uint16_t crc = 0; | |
3022 | uint16_t x; | |
3023 | ||
3024 | crc = crc_t10dif(data, count); | |
3025 | x = cpu_to_be16(crc); | |
3026 | return x; | |
3027 | } | |
3028 | ||
3029 | /* | |
3030 | * This function calcuates the T10 DIF guard tag | |
3031 | * on the specified data using a CSUM algorithmn | |
3032 | * using ip_compute_csum. | |
3033 | */ | |
3034 | uint16_t | |
3035 | lpfc_bg_csum(uint8_t *data, int count) | |
3036 | { | |
3037 | uint16_t ret; | |
3038 | ||
3039 | ret = ip_compute_csum(data, count); | |
3040 | return ret; | |
3041 | } | |
3042 | ||
3043 | /* | |
3044 | * This function examines the protection data to try to determine | |
3045 | * what type of T10-DIF error occurred. | |
3046 | */ | |
3047 | void | |
3048 | lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3049 | { | |
3050 | struct scatterlist *sgpe; /* s/g prot entry */ | |
3051 | struct scatterlist *sgde; /* s/g data entry */ | |
3052 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
3053 | struct scsi_dif_tuple *src = NULL; | |
3054 | uint8_t *data_src = NULL; | |
3055 | uint16_t guard_tag, guard_type; | |
3056 | uint16_t start_app_tag, app_tag; | |
3057 | uint32_t start_ref_tag, ref_tag; | |
3058 | int prot, protsegcnt; | |
3059 | int err_type, len, data_len; | |
3060 | int chk_ref, chk_app, chk_guard; | |
3061 | uint16_t sum; | |
3062 | unsigned blksize; | |
3063 | ||
3064 | err_type = BGS_GUARD_ERR_MASK; | |
3065 | sum = 0; | |
3066 | guard_tag = 0; | |
3067 | ||
3068 | /* First check to see if there is protection data to examine */ | |
3069 | prot = scsi_get_prot_op(cmd); | |
3070 | if ((prot == SCSI_PROT_READ_STRIP) || | |
3071 | (prot == SCSI_PROT_WRITE_INSERT) || | |
3072 | (prot == SCSI_PROT_NORMAL)) | |
3073 | goto out; | |
3074 | ||
3075 | /* Currently the driver just supports ref_tag and guard_tag checking */ | |
3076 | chk_ref = 1; | |
3077 | chk_app = 0; | |
3078 | chk_guard = 0; | |
3079 | ||
3080 | /* Setup a ptr to the protection data provided by the SCSI host */ | |
3081 | sgpe = scsi_prot_sglist(cmd); | |
3082 | protsegcnt = lpfc_cmd->prot_seg_cnt; | |
3083 | ||
3084 | if (sgpe && protsegcnt) { | |
3085 | ||
3086 | /* | |
3087 | * We will only try to verify guard tag if the segment | |
3088 | * data length is a multiple of the blksize. | |
3089 | */ | |
3090 | sgde = scsi_sglist(cmd); | |
3091 | blksize = lpfc_cmd_blksize(cmd); | |
3092 | data_src = (uint8_t *)sg_virt(sgde); | |
3093 | data_len = sgde->length; | |
3094 | if ((data_len & (blksize - 1)) == 0) | |
3095 | chk_guard = 1; | |
3096 | guard_type = scsi_host_get_guard(cmd->device->host); | |
3097 | ||
e85d8f9f | 3098 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); |
a6887e28 | 3099 | start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */ |
737d4248 | 3100 | start_app_tag = src->app_tag; |
737d4248 JS |
3101 | len = sgpe->length; |
3102 | while (src && protsegcnt) { | |
3103 | while (len) { | |
3104 | ||
3105 | /* | |
3106 | * First check to see if a protection data | |
3107 | * check is valid | |
3108 | */ | |
3109 | if ((src->ref_tag == 0xffffffff) || | |
3110 | (src->app_tag == 0xffff)) { | |
3111 | start_ref_tag++; | |
3112 | goto skipit; | |
3113 | } | |
3114 | ||
9c6aa9d7 | 3115 | /* First Guard Tag checking */ |
737d4248 JS |
3116 | if (chk_guard) { |
3117 | guard_tag = src->guard_tag; | |
9c6aa9d7 | 3118 | if (lpfc_cmd_guard_csum(cmd)) |
737d4248 JS |
3119 | sum = lpfc_bg_csum(data_src, |
3120 | blksize); | |
3121 | else | |
3122 | sum = lpfc_bg_crc(data_src, | |
3123 | blksize); | |
3124 | if ((guard_tag != sum)) { | |
3125 | err_type = BGS_GUARD_ERR_MASK; | |
3126 | goto out; | |
3127 | } | |
3128 | } | |
9c6aa9d7 JS |
3129 | |
3130 | /* Reference Tag checking */ | |
3131 | ref_tag = be32_to_cpu(src->ref_tag); | |
3132 | if (chk_ref && (ref_tag != start_ref_tag)) { | |
3133 | err_type = BGS_REFTAG_ERR_MASK; | |
3134 | goto out; | |
3135 | } | |
3136 | start_ref_tag++; | |
3137 | ||
3138 | /* App Tag checking */ | |
3139 | app_tag = src->app_tag; | |
3140 | if (chk_app && (app_tag != start_app_tag)) { | |
3141 | err_type = BGS_APPTAG_ERR_MASK; | |
3142 | goto out; | |
3143 | } | |
737d4248 JS |
3144 | skipit: |
3145 | len -= sizeof(struct scsi_dif_tuple); | |
3146 | if (len < 0) | |
3147 | len = 0; | |
3148 | src++; | |
3149 | ||
3150 | data_src += blksize; | |
3151 | data_len -= blksize; | |
3152 | ||
3153 | /* | |
3154 | * Are we at the end of the Data segment? | |
3155 | * The data segment is only used for Guard | |
3156 | * tag checking. | |
3157 | */ | |
3158 | if (chk_guard && (data_len == 0)) { | |
3159 | chk_guard = 0; | |
3160 | sgde = sg_next(sgde); | |
3161 | if (!sgde) | |
3162 | goto out; | |
3163 | ||
3164 | data_src = (uint8_t *)sg_virt(sgde); | |
3165 | data_len = sgde->length; | |
3166 | if ((data_len & (blksize - 1)) == 0) | |
3167 | chk_guard = 1; | |
3168 | } | |
3169 | } | |
3170 | ||
3171 | /* Goto the next Protection data segment */ | |
3172 | sgpe = sg_next(sgpe); | |
3173 | if (sgpe) { | |
3174 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); | |
3175 | len = sgpe->length; | |
3176 | } else { | |
3177 | src = NULL; | |
3178 | } | |
3179 | protsegcnt--; | |
3180 | } | |
3181 | } | |
3182 | out: | |
3183 | if (err_type == BGS_GUARD_ERR_MASK) { | |
3184 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3185 | 0x10, 0x1); | |
3186 | cmd->result = DRIVER_SENSE << 24 | |
3187 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); | |
3188 | phba->bg_guard_err_cnt++; | |
3189 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, | |
3190 | "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n", | |
3191 | (unsigned long)scsi_get_lba(cmd), | |
3192 | sum, guard_tag); | |
3193 | ||
3194 | } else if (err_type == BGS_REFTAG_ERR_MASK) { | |
3195 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3196 | 0x10, 0x3); | |
3197 | cmd->result = DRIVER_SENSE << 24 | |
3198 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); | |
3199 | ||
3200 | phba->bg_reftag_err_cnt++; | |
3201 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, | |
3202 | "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n", | |
3203 | (unsigned long)scsi_get_lba(cmd), | |
3204 | ref_tag, start_ref_tag); | |
3205 | ||
3206 | } else if (err_type == BGS_APPTAG_ERR_MASK) { | |
3207 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3208 | 0x10, 0x2); | |
3209 | cmd->result = DRIVER_SENSE << 24 | |
3210 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); | |
3211 | ||
3212 | phba->bg_apptag_err_cnt++; | |
3213 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, | |
3214 | "9041 BLKGRD: LBA %lx app_tag error %x != %x\n", | |
3215 | (unsigned long)scsi_get_lba(cmd), | |
3216 | app_tag, start_app_tag); | |
3217 | } | |
3218 | } | |
3219 | ||
3220 | ||
e2a0a9d6 JS |
3221 | /* |
3222 | * This function checks for BlockGuard errors detected by | |
3223 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
3224 | * sense buffer will be set accordingly, paired with | |
3225 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
3226 | * detected corruption. | |
3227 | * | |
3228 | * Returns: | |
3229 | * 0 - No error found | |
3230 | * 1 - BlockGuard error found | |
3231 | * -1 - Internal error (bad profile, ...etc) | |
3232 | */ | |
3233 | static int | |
3234 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
3235 | struct lpfc_iocbq *pIocbOut) | |
3236 | { | |
3237 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
3238 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
3239 | int ret = 0; | |
3240 | uint32_t bghm = bgf->bghm; | |
3241 | uint32_t bgstat = bgf->bgstat; | |
3242 | uint64_t failing_sector = 0; | |
3243 | ||
e2a0a9d6 JS |
3244 | spin_lock(&_dump_buf_lock); |
3245 | if (!_dump_buf_done) { | |
6a9c52cf JS |
3246 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
3247 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 3248 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 3249 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
3250 | |
3251 | /* If we have a prot sgl, save the DIF buffer */ | |
3252 | if (lpfc_prot_group_type(phba, cmd) == | |
3253 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
3254 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
3255 | "Saving DIF for %u blocks to debugfs\n", | |
3256 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
3257 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
3258 | } |
3259 | ||
3260 | _dump_buf_done = 1; | |
3261 | } | |
3262 | spin_unlock(&_dump_buf_lock); | |
3263 | ||
3264 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
3265 | cmd->result = ScsiResult(DID_ERROR, 0); | |
737d4248 JS |
3266 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3267 | "9072 BLKGRD: Invalid BG Profile in cmd" | |
3268 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3269 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3270 | (unsigned long long)scsi_get_lba(cmd), | |
3271 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3272 | ret = (-1); |
3273 | goto out; | |
3274 | } | |
3275 | ||
3276 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
3277 | cmd->result = ScsiResult(DID_ERROR, 0); | |
737d4248 JS |
3278 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3279 | "9073 BLKGRD: Invalid BG PDIF Block in cmd" | |
3280 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3281 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3282 | (unsigned long long)scsi_get_lba(cmd), | |
3283 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3284 | ret = (-1); |
3285 | goto out; | |
3286 | } | |
3287 | ||
3288 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
3289 | ret = 1; | |
3290 | ||
3291 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3292 | 0x10, 0x1); | |
1c9fbafc | 3293 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
3294 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
3295 | phba->bg_guard_err_cnt++; | |
737d4248 JS |
3296 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3297 | "9055 BLKGRD: Guard Tag error in cmd" | |
3298 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3299 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3300 | (unsigned long long)scsi_get_lba(cmd), | |
3301 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3302 | } |
3303 | ||
3304 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
3305 | ret = 1; | |
3306 | ||
3307 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3308 | 0x10, 0x3); | |
1c9fbafc | 3309 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
3310 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
3311 | ||
3312 | phba->bg_reftag_err_cnt++; | |
737d4248 JS |
3313 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3314 | "9056 BLKGRD: Ref Tag error in cmd" | |
3315 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3316 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3317 | (unsigned long long)scsi_get_lba(cmd), | |
3318 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3319 | } |
3320 | ||
3321 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
3322 | ret = 1; | |
3323 | ||
3324 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3325 | 0x10, 0x2); | |
1c9fbafc | 3326 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
3327 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
3328 | ||
3329 | phba->bg_apptag_err_cnt++; | |
737d4248 JS |
3330 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3331 | "9061 BLKGRD: App Tag error in cmd" | |
3332 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3333 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3334 | (unsigned long long)scsi_get_lba(cmd), | |
3335 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3336 | } |
3337 | ||
3338 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
3339 | /* | |
3340 | * setup sense data descriptor 0 per SPC-4 as an information | |
7c56b9fd JS |
3341 | * field, and put the failing LBA in it. |
3342 | * This code assumes there was also a guard/app/ref tag error | |
3343 | * indication. | |
e2a0a9d6 | 3344 | */ |
7c56b9fd JS |
3345 | cmd->sense_buffer[7] = 0xc; /* Additional sense length */ |
3346 | cmd->sense_buffer[8] = 0; /* Information descriptor type */ | |
3347 | cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ | |
3348 | cmd->sense_buffer[10] = 0x80; /* Validity bit */ | |
acd6859b JS |
3349 | |
3350 | /* bghm is a "on the wire" FC frame based count */ | |
3351 | switch (scsi_get_prot_op(cmd)) { | |
3352 | case SCSI_PROT_READ_INSERT: | |
3353 | case SCSI_PROT_WRITE_STRIP: | |
3354 | bghm /= cmd->device->sector_size; | |
3355 | break; | |
3356 | case SCSI_PROT_READ_STRIP: | |
3357 | case SCSI_PROT_WRITE_INSERT: | |
3358 | case SCSI_PROT_READ_PASS: | |
3359 | case SCSI_PROT_WRITE_PASS: | |
3360 | bghm /= (cmd->device->sector_size + | |
3361 | sizeof(struct scsi_dif_tuple)); | |
3362 | break; | |
3363 | } | |
e2a0a9d6 JS |
3364 | |
3365 | failing_sector = scsi_get_lba(cmd); | |
3366 | failing_sector += bghm; | |
3367 | ||
7c56b9fd JS |
3368 | /* Descriptor Information */ |
3369 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); | |
e2a0a9d6 JS |
3370 | } |
3371 | ||
3372 | if (!ret) { | |
3373 | /* No error was reported - problem in FW? */ | |
737d4248 JS |
3374 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3375 | "9057 BLKGRD: Unknown error in cmd" | |
3376 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3377 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3378 | (unsigned long long)scsi_get_lba(cmd), | |
3379 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
3380 | ||
3381 | /* Calcuate what type of error it was */ | |
3382 | lpfc_calc_bg_err(phba, lpfc_cmd); | |
e2a0a9d6 | 3383 | } |
e2a0a9d6 JS |
3384 | out: |
3385 | return ret; | |
dea3101e | 3386 | } |
3387 | ||
da0436e9 JS |
3388 | /** |
3389 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
3390 | * @phba: The Hba for which this call is being executed. | |
3391 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3392 | * | |
3393 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3394 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
3395 | * | |
3396 | * Return codes: | |
6c8eea54 JS |
3397 | * 1 - Error |
3398 | * 0 - Success | |
da0436e9 JS |
3399 | **/ |
3400 | static int | |
3401 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3402 | { | |
3403 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
3404 | struct scatterlist *sgel = NULL; | |
3405 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
3406 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
fedd3b7b | 3407 | struct sli4_sge *first_data_sgl; |
da0436e9 JS |
3408 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
3409 | dma_addr_t physaddr; | |
3410 | uint32_t num_bde = 0; | |
3411 | uint32_t dma_len; | |
3412 | uint32_t dma_offset = 0; | |
3413 | int nseg; | |
fedd3b7b | 3414 | struct ulp_bde64 *bde; |
da0436e9 JS |
3415 | |
3416 | /* | |
3417 | * There are three possibilities here - use scatter-gather segment, use | |
3418 | * the single mapping, or neither. Start the lpfc command prep by | |
3419 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
3420 | * data bde entry. | |
3421 | */ | |
3422 | if (scsi_sg_count(scsi_cmnd)) { | |
3423 | /* | |
3424 | * The driver stores the segment count returned from pci_map_sg | |
3425 | * because this a count of dma-mappings used to map the use_sg | |
3426 | * pages. They are not guaranteed to be the same for those | |
3427 | * architectures that implement an IOMMU. | |
3428 | */ | |
3429 | ||
3430 | nseg = scsi_dma_map(scsi_cmnd); | |
3431 | if (unlikely(!nseg)) | |
3432 | return 1; | |
3433 | sgl += 1; | |
3434 | /* clear the last flag in the fcp_rsp map entry */ | |
3435 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3436 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3437 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3438 | sgl += 1; | |
fedd3b7b | 3439 | first_data_sgl = sgl; |
da0436e9 JS |
3440 | lpfc_cmd->seg_cnt = nseg; |
3441 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
3442 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
3443 | " %s: Too many sg segments from " | |
3444 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
3445 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 | 3446 | lpfc_cmd->seg_cnt); |
96f7077f | 3447 | lpfc_cmd->seg_cnt = 0; |
da0436e9 JS |
3448 | scsi_dma_unmap(scsi_cmnd); |
3449 | return 1; | |
3450 | } | |
3451 | ||
3452 | /* | |
3453 | * The driver established a maximum scatter-gather segment count | |
3454 | * during probe that limits the number of sg elements in any | |
3455 | * single scsi command. Just run through the seg_cnt and format | |
3456 | * the sge's. | |
3457 | * When using SLI-3 the driver will try to fit all the BDEs into | |
3458 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
3459 | * does for SLI-2 mode. | |
3460 | */ | |
3461 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
3462 | physaddr = sg_dma_address(sgel); | |
3463 | dma_len = sg_dma_len(sgel); | |
da0436e9 JS |
3464 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); |
3465 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
0558056c | 3466 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
3467 | if ((num_bde + 1) == nseg) |
3468 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
3469 | else | |
3470 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3471 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
f9bb2da1 | 3472 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); |
da0436e9 | 3473 | sgl->word2 = cpu_to_le32(sgl->word2); |
28baac74 | 3474 | sgl->sge_len = cpu_to_le32(dma_len); |
da0436e9 JS |
3475 | dma_offset += dma_len; |
3476 | sgl++; | |
3477 | } | |
fedd3b7b JS |
3478 | /* setup the performance hint (first data BDE) if enabled */ |
3479 | if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) { | |
3480 | bde = (struct ulp_bde64 *) | |
3481 | &(iocb_cmd->unsli3.sli3Words[5]); | |
3482 | bde->addrLow = first_data_sgl->addr_lo; | |
3483 | bde->addrHigh = first_data_sgl->addr_hi; | |
3484 | bde->tus.f.bdeSize = | |
3485 | le32_to_cpu(first_data_sgl->sge_len); | |
3486 | bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
3487 | bde->tus.w = cpu_to_le32(bde->tus.w); | |
3488 | } | |
da0436e9 JS |
3489 | } else { |
3490 | sgl += 1; | |
3491 | /* clear the last flag in the fcp_rsp map entry */ | |
3492 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3493 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
3494 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3495 | } | |
3496 | ||
3497 | /* | |
3498 | * Finish initializing those IOCB fields that are dependent on the | |
3499 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
3500 | * explicitly reinitialized. | |
3501 | * all iocb memory resources are reused. | |
3502 | */ | |
3503 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
3504 | ||
3505 | /* | |
3506 | * Due to difference in data length between DIF/non-DIF paths, | |
3507 | * we need to set word 4 of IOCB here | |
3508 | */ | |
3509 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
3510 | return 0; | |
3511 | } | |
3512 | ||
acd6859b JS |
3513 | /** |
3514 | * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
3515 | * @phba: The Hba for which this call is being executed. | |
3516 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3517 | * | |
3518 | * This is the protection/DIF aware version of | |
3519 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
3520 | * two functions eventually, but for now, it's here | |
3521 | **/ | |
3522 | static int | |
3523 | lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, | |
3524 | struct lpfc_scsi_buf *lpfc_cmd) | |
3525 | { | |
3526 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
3527 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
3528 | struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl); | |
3529 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
96f7077f | 3530 | uint32_t num_sge = 0; |
acd6859b JS |
3531 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; |
3532 | int prot_group_type = 0; | |
3533 | int fcpdl; | |
3534 | ||
3535 | /* | |
3536 | * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd | |
96f7077f | 3537 | * fcp_rsp regions to the first data sge entry |
acd6859b JS |
3538 | */ |
3539 | if (scsi_sg_count(scsi_cmnd)) { | |
3540 | /* | |
3541 | * The driver stores the segment count returned from pci_map_sg | |
3542 | * because this a count of dma-mappings used to map the use_sg | |
3543 | * pages. They are not guaranteed to be the same for those | |
3544 | * architectures that implement an IOMMU. | |
3545 | */ | |
3546 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
3547 | scsi_sglist(scsi_cmnd), | |
3548 | scsi_sg_count(scsi_cmnd), datadir); | |
3549 | if (unlikely(!datasegcnt)) | |
3550 | return 1; | |
3551 | ||
3552 | sgl += 1; | |
3553 | /* clear the last flag in the fcp_rsp map entry */ | |
3554 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3555 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3556 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3557 | ||
3558 | sgl += 1; | |
3559 | lpfc_cmd->seg_cnt = datasegcnt; | |
96f7077f JS |
3560 | |
3561 | /* First check if data segment count from SCSI Layer is good */ | |
3562 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) | |
3563 | goto err; | |
acd6859b JS |
3564 | |
3565 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
3566 | ||
3567 | switch (prot_group_type) { | |
3568 | case LPFC_PG_TYPE_NO_DIF: | |
96f7077f JS |
3569 | /* Here we need to add a DISEED to the count */ |
3570 | if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt) | |
3571 | goto err; | |
3572 | ||
3573 | num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, | |
acd6859b | 3574 | datasegcnt); |
96f7077f | 3575 | |
acd6859b | 3576 | /* we should have 2 or more entries in buffer list */ |
96f7077f | 3577 | if (num_sge < 2) |
acd6859b JS |
3578 | goto err; |
3579 | break; | |
96f7077f JS |
3580 | |
3581 | case LPFC_PG_TYPE_DIF_BUF: | |
acd6859b JS |
3582 | /* |
3583 | * This type indicates that protection buffers are | |
3584 | * passed to the driver, so that needs to be prepared | |
3585 | * for DMA | |
3586 | */ | |
3587 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
3588 | scsi_prot_sglist(scsi_cmnd), | |
3589 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
3590 | if (unlikely(!protsegcnt)) { | |
3591 | scsi_dma_unmap(scsi_cmnd); | |
3592 | return 1; | |
3593 | } | |
3594 | ||
3595 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
96f7077f JS |
3596 | /* |
3597 | * There is a minimun of 3 SGEs used for every | |
3598 | * protection data segment. | |
3599 | */ | |
3600 | if ((lpfc_cmd->prot_seg_cnt * 3) > | |
3601 | (phba->cfg_total_seg_cnt - 2)) | |
3602 | goto err; | |
acd6859b | 3603 | |
96f7077f | 3604 | num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, |
acd6859b | 3605 | datasegcnt, protsegcnt); |
96f7077f | 3606 | |
acd6859b | 3607 | /* we should have 3 or more entries in buffer list */ |
96f7077f JS |
3608 | if ((num_sge < 3) || |
3609 | (num_sge > phba->cfg_total_seg_cnt)) | |
acd6859b JS |
3610 | goto err; |
3611 | break; | |
96f7077f | 3612 | |
acd6859b JS |
3613 | case LPFC_PG_TYPE_INVALID: |
3614 | default: | |
96f7077f JS |
3615 | scsi_dma_unmap(scsi_cmnd); |
3616 | lpfc_cmd->seg_cnt = 0; | |
3617 | ||
acd6859b JS |
3618 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
3619 | "9083 Unexpected protection group %i\n", | |
3620 | prot_group_type); | |
3621 | return 1; | |
3622 | } | |
3623 | } | |
3624 | ||
8012cc38 JS |
3625 | switch (scsi_get_prot_op(scsi_cmnd)) { |
3626 | case SCSI_PROT_WRITE_STRIP: | |
3627 | case SCSI_PROT_READ_STRIP: | |
3628 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP; | |
3629 | break; | |
3630 | case SCSI_PROT_WRITE_INSERT: | |
3631 | case SCSI_PROT_READ_INSERT: | |
3632 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT; | |
3633 | break; | |
3634 | case SCSI_PROT_WRITE_PASS: | |
3635 | case SCSI_PROT_READ_PASS: | |
3636 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS; | |
3637 | break; | |
3638 | } | |
3639 | ||
acd6859b | 3640 | fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); |
acd6859b JS |
3641 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); |
3642 | ||
3643 | /* | |
3644 | * Due to difference in data length between DIF/non-DIF paths, | |
3645 | * we need to set word 4 of IOCB here | |
3646 | */ | |
3647 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
acd6859b JS |
3648 | |
3649 | return 0; | |
3650 | err: | |
96f7077f JS |
3651 | if (lpfc_cmd->seg_cnt) |
3652 | scsi_dma_unmap(scsi_cmnd); | |
3653 | if (lpfc_cmd->prot_seg_cnt) | |
3654 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), | |
3655 | scsi_prot_sg_count(scsi_cmnd), | |
3656 | scsi_cmnd->sc_data_direction); | |
3657 | ||
acd6859b | 3658 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
96f7077f JS |
3659 | "9084 Cannot setup S/G List for HBA" |
3660 | "IO segs %d/%d SGL %d SCSI %d: %d %d\n", | |
3661 | lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, | |
3662 | phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, | |
3663 | prot_group_type, num_sge); | |
3664 | ||
3665 | lpfc_cmd->seg_cnt = 0; | |
3666 | lpfc_cmd->prot_seg_cnt = 0; | |
acd6859b JS |
3667 | return 1; |
3668 | } | |
3669 | ||
3772a991 JS |
3670 | /** |
3671 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
3672 | * @phba: The Hba for which this call is being executed. | |
3673 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3674 | * | |
3675 | * This routine wraps the actual DMA mapping function pointer from the | |
3676 | * lpfc_hba struct. | |
3677 | * | |
3678 | * Return codes: | |
6c8eea54 JS |
3679 | * 1 - Error |
3680 | * 0 - Success | |
3772a991 JS |
3681 | **/ |
3682 | static inline int | |
3683 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3684 | { | |
3685 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3686 | } | |
3687 | ||
acd6859b JS |
3688 | /** |
3689 | * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
3690 | * using BlockGuard. | |
3691 | * @phba: The Hba for which this call is being executed. | |
3692 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3693 | * | |
3694 | * This routine wraps the actual DMA mapping function pointer from the | |
3695 | * lpfc_hba struct. | |
3696 | * | |
3697 | * Return codes: | |
3698 | * 1 - Error | |
3699 | * 0 - Success | |
3700 | **/ | |
3701 | static inline int | |
3702 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3703 | { | |
3704 | return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3705 | } | |
3706 | ||
ea2151b4 | 3707 | /** |
3621a710 | 3708 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
3709 | * @phba: Pointer to hba context object. |
3710 | * @vport: Pointer to vport object. | |
3711 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
3712 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
3713 | * | |
3714 | * This function posts an event when there is a SCSI command reporting | |
3715 | * error from the scsi device. | |
3716 | **/ | |
3717 | static void | |
3718 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
3719 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
3720 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
3721 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
3722 | uint32_t resp_info = fcprsp->rspStatus2; | |
3723 | uint32_t scsi_status = fcprsp->rspStatus3; | |
3724 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
3725 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
3726 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
3727 | unsigned long flags; | |
3728 | ||
5989b8d4 JS |
3729 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
3730 | return; | |
3731 | ||
ea2151b4 JS |
3732 | /* If there is queuefull or busy condition send a scsi event */ |
3733 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
3734 | (cmnd->result == SAM_STAT_BUSY)) { | |
3735 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3736 | if (!fast_path_evt) | |
3737 | return; | |
3738 | fast_path_evt->un.scsi_evt.event_type = | |
3739 | FC_REG_SCSI_EVENT; | |
3740 | fast_path_evt->un.scsi_evt.subcategory = | |
3741 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
3742 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
3743 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
3744 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
3745 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3746 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
3747 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3748 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
3749 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
3750 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3751 | if (!fast_path_evt) | |
3752 | return; | |
3753 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
3754 | FC_REG_SCSI_EVENT; | |
3755 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
3756 | LPFC_EVENT_CHECK_COND; | |
3757 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
3758 | cmnd->device->lun; | |
3759 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
3760 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3761 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
3762 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3763 | fast_path_evt->un.check_cond_evt.sense_key = | |
3764 | cmnd->sense_buffer[2] & 0xf; | |
3765 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
3766 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
3767 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
3768 | fcpi_parm && | |
3769 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
3770 | ((scsi_status == SAM_STAT_GOOD) && | |
3771 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
3772 | /* | |
3773 | * If status is good or resid does not match with fcp_param and | |
3774 | * there is valid fcpi_parm, then there is a read_check error | |
3775 | */ | |
3776 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3777 | if (!fast_path_evt) | |
3778 | return; | |
3779 | fast_path_evt->un.read_check_error.header.event_type = | |
3780 | FC_REG_FABRIC_EVENT; | |
3781 | fast_path_evt->un.read_check_error.header.subcategory = | |
3782 | LPFC_EVENT_FCPRDCHKERR; | |
3783 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
3784 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3785 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
3786 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3787 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
3788 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
3789 | fast_path_evt->un.read_check_error.fcpiparam = | |
3790 | fcpi_parm; | |
3791 | } else | |
3792 | return; | |
3793 | ||
3794 | fast_path_evt->vport = vport; | |
3795 | spin_lock_irqsave(&phba->hbalock, flags); | |
3796 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
3797 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
3798 | lpfc_worker_wake_up(phba); | |
3799 | return; | |
3800 | } | |
9bad7671 JS |
3801 | |
3802 | /** | |
f1126688 | 3803 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 3804 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
3805 | * @psb: The scsi buffer which is going to be un-mapped. |
3806 | * | |
3807 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 3808 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 3809 | **/ |
bcf4dbfa | 3810 | static void |
f1126688 | 3811 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
3812 | { |
3813 | /* | |
3814 | * There are only two special cases to consider. (1) the scsi command | |
3815 | * requested scatter-gather usage or (2) the scsi command allocated | |
3816 | * a request buffer, but did not request use_sg. There is a third | |
3817 | * case, but it does not require resource deallocation. | |
3818 | */ | |
a0b4f78f FT |
3819 | if (psb->seg_cnt > 0) |
3820 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
3821 | if (psb->prot_seg_cnt > 0) |
3822 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
3823 | scsi_prot_sg_count(psb->pCmd), | |
3824 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
3825 | } |
3826 | ||
9bad7671 | 3827 | /** |
3621a710 | 3828 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
3829 | * @vport: The virtual port for which this call is being executed. |
3830 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
3831 | * @rsp_iocb: The response IOCB which contains FCP error. | |
3832 | * | |
3833 | * This routine is called to process response IOCB with status field | |
3834 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
3835 | * based upon SCSI and FCP error. | |
3836 | **/ | |
dea3101e | 3837 | static void |
2e0fef85 JS |
3838 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
3839 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 3840 | { |
3841 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
3842 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
3843 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 3844 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 3845 | uint32_t resp_info = fcprsp->rspStatus2; |
3846 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 3847 | uint32_t *lp; |
dea3101e | 3848 | uint32_t host_status = DID_OK; |
3849 | uint32_t rsplen = 0; | |
c7743956 | 3850 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 3851 | |
ea2151b4 | 3852 | |
dea3101e | 3853 | /* |
3854 | * If this is a task management command, there is no | |
3855 | * scsi packet associated with this lpfc_cmd. The driver | |
3856 | * consumes it. | |
3857 | */ | |
3858 | if (fcpcmd->fcpCntl2) { | |
3859 | scsi_status = 0; | |
3860 | goto out; | |
3861 | } | |
3862 | ||
6a9c52cf JS |
3863 | if (resp_info & RSP_LEN_VALID) { |
3864 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
e40a02c1 | 3865 | if (rsplen != 0 && rsplen != 4 && rsplen != 8) { |
6a9c52cf JS |
3866 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3867 | "2719 Invalid response length: " | |
3868 | "tgt x%x lun x%x cmnd x%x rsplen x%x\n", | |
3869 | cmnd->device->id, | |
3870 | cmnd->device->lun, cmnd->cmnd[0], | |
3871 | rsplen); | |
3872 | host_status = DID_ERROR; | |
3873 | goto out; | |
3874 | } | |
e40a02c1 JS |
3875 | if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { |
3876 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3877 | "2757 Protocol failure detected during " | |
3878 | "processing of FCP I/O op: " | |
3879 | "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n", | |
3880 | cmnd->device->id, | |
3881 | cmnd->device->lun, cmnd->cmnd[0], | |
3882 | fcprsp->rspInfo3); | |
3883 | host_status = DID_ERROR; | |
3884 | goto out; | |
3885 | } | |
6a9c52cf JS |
3886 | } |
3887 | ||
c7743956 JS |
3888 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
3889 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
3890 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
3891 | snslen = SCSI_SENSE_BUFFERSIZE; | |
3892 | ||
3893 | if (resp_info & RSP_LEN_VALID) | |
3894 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
3895 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
3896 | } | |
3897 | lp = (uint32_t *)cmnd->sense_buffer; | |
3898 | ||
aa1c7ee7 JS |
3899 | /* special handling for under run conditions */ |
3900 | if (!scsi_status && (resp_info & RESID_UNDER)) { | |
3901 | /* don't log under runs if fcp set... */ | |
3902 | if (vport->cfg_log_verbose & LOG_FCP) | |
3903 | logit = LOG_FCP_ERROR; | |
3904 | /* unless operator says so */ | |
3905 | if (vport->cfg_log_verbose & LOG_FCP_UNDER) | |
3906 | logit = LOG_FCP_UNDER; | |
3907 | } | |
c7743956 | 3908 | |
e8b62011 | 3909 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 3910 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
3911 | "Data: x%x x%x x%x x%x x%x\n", |
3912 | cmnd->cmnd[0], scsi_status, | |
3913 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
3914 | be32_to_cpu(fcprsp->rspResId), | |
3915 | be32_to_cpu(fcprsp->rspSnsLen), | |
3916 | be32_to_cpu(fcprsp->rspRspLen), | |
3917 | fcprsp->rspInfo3); | |
dea3101e | 3918 | |
a0b4f78f | 3919 | scsi_set_resid(cmnd, 0); |
dea3101e | 3920 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 3921 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 3922 | |
73d91e50 | 3923 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, |
e2a0a9d6 | 3924 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
3925 | "residual %d Data: x%x x%x x%x\n", |
3926 | be32_to_cpu(fcpcmd->fcpDl), | |
3927 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
3928 | cmnd->underflow); | |
dea3101e | 3929 | |
7054a606 JS |
3930 | /* |
3931 | * If there is an under run check if under run reported by | |
3932 | * storage array is same as the under run reported by HBA. | |
3933 | * If this is not same, there is a dropped frame. | |
3934 | */ | |
3935 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
3936 | fcpi_parm && | |
a0b4f78f | 3937 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
3938 | lpfc_printf_vlog(vport, KERN_WARNING, |
3939 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 3940 | "9026 FCP Read Check Error " |
e8b62011 JS |
3941 | "and Underrun Data: x%x x%x x%x x%x\n", |
3942 | be32_to_cpu(fcpcmd->fcpDl), | |
3943 | scsi_get_resid(cmnd), fcpi_parm, | |
3944 | cmnd->cmnd[0]); | |
a0b4f78f | 3945 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
3946 | host_status = DID_ERROR; |
3947 | } | |
dea3101e | 3948 | /* |
3949 | * The cmnd->underflow is the minimum number of bytes that must | |
25985edc | 3950 | * be transferred for this command. Provided a sense condition |
dea3101e | 3951 | * is not present, make sure the actual amount transferred is at |
3952 | * least the underflow value or fail. | |
3953 | */ | |
3954 | if (!(resp_info & SNS_LEN_VALID) && | |
3955 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
3956 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
3957 | < cmnd->underflow)) { | |
e8b62011 | 3958 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 3959 | "9027 FCP command x%x residual " |
e8b62011 JS |
3960 | "underrun converted to error " |
3961 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 3962 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 3963 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e | 3964 | host_status = DID_ERROR; |
3965 | } | |
3966 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 3967 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 3968 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 3969 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 3970 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e | 3971 | host_status = DID_ERROR; |
3972 | ||
3973 | /* | |
3974 | * Check SLI validation that all the transfer was actually done | |
26373d23 | 3975 | * (fcpi_parm should be zero). Apply check only to reads. |
dea3101e | 3976 | */ |
26373d23 | 3977 | } else if (fcpi_parm && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { |
e8b62011 | 3978 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
26373d23 | 3979 | "9029 FCP Read Check Error Data: " |
eee8877e | 3980 | "x%x x%x x%x x%x x%x\n", |
e8b62011 JS |
3981 | be32_to_cpu(fcpcmd->fcpDl), |
3982 | be32_to_cpu(fcprsp->rspResId), | |
eee8877e JS |
3983 | fcpi_parm, cmnd->cmnd[0], scsi_status); |
3984 | switch (scsi_status) { | |
3985 | case SAM_STAT_GOOD: | |
3986 | case SAM_STAT_CHECK_CONDITION: | |
3987 | /* Fabric dropped a data frame. Fail any successful | |
3988 | * command in which we detected dropped frames. | |
3989 | * A status of good or some check conditions could | |
3990 | * be considered a successful command. | |
3991 | */ | |
3992 | host_status = DID_ERROR; | |
3993 | break; | |
3994 | } | |
a0b4f78f | 3995 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 3996 | } |
3997 | ||
3998 | out: | |
3999 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 4000 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e | 4001 | } |
4002 | ||
9bad7671 | 4003 | /** |
3621a710 | 4004 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
4005 | * @phba: The Hba for which this call is being executed. |
4006 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 4007 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
4008 | * |
4009 | * This routine assigns scsi command result by looking into response IOCB | |
4010 | * status field appropriately. This routine handles QUEUE FULL condition as | |
4011 | * well by ramping down device queue depth. | |
4012 | **/ | |
dea3101e | 4013 | static void |
4014 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
4015 | struct lpfc_iocbq *pIocbOut) | |
4016 | { | |
4017 | struct lpfc_scsi_buf *lpfc_cmd = | |
4018 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 4019 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 4020 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
4021 | struct lpfc_nodelist *pnode = rdata->pnode; | |
75baf696 | 4022 | struct scsi_cmnd *cmd; |
445cf4f4 | 4023 | int result; |
a257bf90 | 4024 | struct scsi_device *tmp_sdev; |
5ffc266e | 4025 | int depth; |
fa61a54e | 4026 | unsigned long flags; |
ea2151b4 | 4027 | struct lpfc_fast_path_event *fast_path_evt; |
75baf696 | 4028 | struct Scsi_Host *shost; |
a257bf90 | 4029 | uint32_t queue_depth, scsi_id; |
73d91e50 | 4030 | uint32_t logit = LOG_FCP; |
dea3101e | 4031 | |
75baf696 JS |
4032 | /* Sanity check on return of outstanding command */ |
4033 | if (!(lpfc_cmd->pCmd)) | |
4034 | return; | |
4035 | cmd = lpfc_cmd->pCmd; | |
4036 | shost = cmd->device->host; | |
4037 | ||
e3d2b802 | 4038 | lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); |
dea3101e | 4039 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; |
341af102 JS |
4040 | /* pick up SLI4 exhange busy status from HBA */ |
4041 | lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; | |
4042 | ||
9a6b09c0 JS |
4043 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4044 | if (lpfc_cmd->prot_data_type) { | |
4045 | struct scsi_dif_tuple *src = NULL; | |
4046 | ||
4047 | src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; | |
4048 | /* | |
4049 | * Used to restore any changes to protection | |
4050 | * data for error injection. | |
4051 | */ | |
4052 | switch (lpfc_cmd->prot_data_type) { | |
4053 | case LPFC_INJERR_REFTAG: | |
4054 | src->ref_tag = | |
4055 | lpfc_cmd->prot_data; | |
4056 | break; | |
4057 | case LPFC_INJERR_APPTAG: | |
4058 | src->app_tag = | |
4059 | (uint16_t)lpfc_cmd->prot_data; | |
4060 | break; | |
4061 | case LPFC_INJERR_GUARD: | |
4062 | src->guard_tag = | |
4063 | (uint16_t)lpfc_cmd->prot_data; | |
4064 | break; | |
4065 | default: | |
4066 | break; | |
4067 | } | |
4068 | ||
4069 | lpfc_cmd->prot_data = 0; | |
4070 | lpfc_cmd->prot_data_type = 0; | |
4071 | lpfc_cmd->prot_data_segment = NULL; | |
4072 | } | |
4073 | #endif | |
109f6ed0 JS |
4074 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
4075 | atomic_dec(&pnode->cmd_pending); | |
dea3101e | 4076 | |
4077 | if (lpfc_cmd->status) { | |
4078 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
4079 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
4080 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
4081 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
4082 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
aa1c7ee7 JS |
4083 | if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && |
4084 | !lpfc_cmd->fcp_rsp->rspStatus3 && | |
4085 | (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && | |
4086 | !(vport->cfg_log_verbose & LOG_FCP_UNDER)) | |
73d91e50 JS |
4087 | logit = 0; |
4088 | else | |
4089 | logit = LOG_FCP | LOG_FCP_UNDER; | |
4090 | lpfc_printf_vlog(vport, KERN_WARNING, logit, | |
4091 | "9030 FCP cmd x%x failed <%d/%d> " | |
5a0d80fc JS |
4092 | "status: x%x result: x%x " |
4093 | "sid: x%x did: x%x oxid: x%x " | |
4094 | "Data: x%x x%x\n", | |
73d91e50 JS |
4095 | cmd->cmnd[0], |
4096 | cmd->device ? cmd->device->id : 0xffff, | |
4097 | cmd->device ? cmd->device->lun : 0xffff, | |
4098 | lpfc_cmd->status, lpfc_cmd->result, | |
3bf41ba9 JS |
4099 | vport->fc_myDID, |
4100 | (pnode) ? pnode->nlp_DID : 0, | |
5a0d80fc JS |
4101 | phba->sli_rev == LPFC_SLI_REV4 ? |
4102 | lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, | |
73d91e50 JS |
4103 | pIocbOut->iocb.ulpContext, |
4104 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 4105 | |
4106 | switch (lpfc_cmd->status) { | |
4107 | case IOSTAT_FCP_RSP_ERROR: | |
4108 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 4109 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 4110 | break; |
4111 | case IOSTAT_NPORT_BSY: | |
4112 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 4113 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
4114 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
4115 | if (!fast_path_evt) | |
4116 | break; | |
4117 | fast_path_evt->un.fabric_evt.event_type = | |
4118 | FC_REG_FABRIC_EVENT; | |
4119 | fast_path_evt->un.fabric_evt.subcategory = | |
4120 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
4121 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
4122 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
4123 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
4124 | &pnode->nlp_portname, | |
4125 | sizeof(struct lpfc_name)); | |
4126 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
4127 | &pnode->nlp_nodename, | |
4128 | sizeof(struct lpfc_name)); | |
4129 | } | |
4130 | fast_path_evt->vport = vport; | |
4131 | fast_path_evt->work_evt.evt = | |
4132 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
4133 | spin_lock_irqsave(&phba->hbalock, flags); | |
4134 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
4135 | &phba->work_list); | |
4136 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
4137 | lpfc_worker_wake_up(phba); | |
dea3101e | 4138 | break; |
92d7f7b0 | 4139 | case IOSTAT_LOCAL_REJECT: |
1151e3ec | 4140 | case IOSTAT_REMOTE_STOP: |
ab56dc2e JS |
4141 | if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || |
4142 | lpfc_cmd->result == | |
4143 | IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || | |
4144 | lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || | |
4145 | lpfc_cmd->result == | |
4146 | IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { | |
4147 | cmd->result = ScsiResult(DID_NO_CONNECT, 0); | |
4148 | break; | |
4149 | } | |
d7c255b2 | 4150 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 4151 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
b92938b4 JS |
4152 | lpfc_cmd->result == IOERR_ABORT_REQUESTED || |
4153 | lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { | |
92d7f7b0 | 4154 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 4155 | break; |
e2a0a9d6 | 4156 | } |
e2a0a9d6 JS |
4157 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || |
4158 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
4159 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
4160 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
4161 | /* | |
4162 | * This is a response for a BG enabled | |
4163 | * cmd. Parse BG error | |
4164 | */ | |
4165 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
4166 | pIocbOut); | |
4167 | break; | |
4168 | } else { | |
4169 | lpfc_printf_vlog(vport, KERN_WARNING, | |
4170 | LOG_BG, | |
4171 | "9031 non-zero BGSTAT " | |
6a9c52cf | 4172 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
4173 | } |
4174 | } | |
1151e3ec JS |
4175 | if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) |
4176 | && (phba->sli_rev == LPFC_SLI_REV4) | |
4177 | && (pnode && NLP_CHK_NODE_ACT(pnode))) { | |
4178 | /* This IO was aborted by the target, we don't | |
4179 | * know the rxid and because we did not send the | |
4180 | * ABTS we cannot generate and RRQ. | |
4181 | */ | |
4182 | lpfc_set_rrq_active(phba, pnode, | |
ee0f4fe1 JS |
4183 | lpfc_cmd->cur_iocbq.sli4_lxritag, |
4184 | 0, 0); | |
1151e3ec | 4185 | } |
e2a0a9d6 | 4186 | /* else: fall through */ |
dea3101e | 4187 | default: |
4188 | cmd->result = ScsiResult(DID_ERROR, 0); | |
4189 | break; | |
4190 | } | |
4191 | ||
58da1ffb | 4192 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 4193 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
4194 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
4195 | SAM_STAT_BUSY); | |
ab56dc2e | 4196 | } else |
dea3101e | 4197 | cmd->result = ScsiResult(DID_OK, 0); |
dea3101e | 4198 | |
4199 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
4200 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
4201 | ||
e8b62011 JS |
4202 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
4203 | "0710 Iodone <%d/%d> cmd %p, error " | |
4204 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
4205 | cmd->device->id, cmd->device->lun, cmd, | |
4206 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
4207 | scsi_get_resid(cmd)); | |
dea3101e | 4208 | } |
4209 | ||
ea2151b4 | 4210 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 4211 | result = cmd->result; |
977b5a0a JS |
4212 | if (vport->cfg_max_scsicmpl_time && |
4213 | time_after(jiffies, lpfc_cmd->start_time + | |
4214 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 4215 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
4216 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
4217 | if (pnode->cmd_qdepth > | |
4218 | atomic_read(&pnode->cmd_pending) && | |
4219 | (atomic_read(&pnode->cmd_pending) > | |
4220 | LPFC_MIN_TGT_QDEPTH) && | |
4221 | ((cmd->cmnd[0] == READ_10) || | |
4222 | (cmd->cmnd[0] == WRITE_10))) | |
4223 | pnode->cmd_qdepth = | |
4224 | atomic_read(&pnode->cmd_pending); | |
4225 | ||
4226 | pnode->last_change_time = jiffies; | |
4227 | } | |
a257bf90 | 4228 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 4229 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
7dc517df | 4230 | if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) && |
977b5a0a | 4231 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 4232 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 4233 | spin_lock_irqsave(shost->host_lock, flags); |
7dc517df JS |
4234 | depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT |
4235 | / 100; | |
4236 | depth = depth ? depth : 1; | |
4237 | pnode->cmd_qdepth += depth; | |
4238 | if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth) | |
4239 | pnode->cmd_qdepth = vport->cfg_tgt_queue_depth; | |
109f6ed0 | 4240 | pnode->last_change_time = jiffies; |
a257bf90 | 4241 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 4242 | } |
977b5a0a JS |
4243 | } |
4244 | ||
1dcb58e5 | 4245 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
4246 | |
4247 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
4248 | queue_depth = cmd->device->queue_depth; | |
4249 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
4250 | cmd->scsi_done(cmd); |
4251 | ||
b808608b | 4252 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
876dd7d0 | 4253 | spin_lock_irqsave(&phba->hbalock, flags); |
92e3af66 | 4254 | lpfc_cmd->pCmd = NULL; |
876dd7d0 | 4255 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92e3af66 | 4256 | |
fa61a54e JS |
4257 | /* |
4258 | * If there is a thread waiting for command completion | |
4259 | * wake up the thread. | |
4260 | */ | |
a257bf90 | 4261 | spin_lock_irqsave(shost->host_lock, flags); |
fa61a54e JS |
4262 | if (lpfc_cmd->waitq) |
4263 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 4264 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
4265 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
4266 | return; | |
4267 | } | |
4268 | ||
92d7f7b0 | 4269 | if (!result) |
a257bf90 | 4270 | lpfc_rampup_queue_depth(vport, queue_depth); |
92d7f7b0 | 4271 | |
445cf4f4 JSEC |
4272 | /* |
4273 | * Check for queue full. If the lun is reporting queue full, then | |
4274 | * back off the lun queue depth to prevent target overloads. | |
4275 | */ | |
58da1ffb JS |
4276 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
4277 | NLP_CHK_NODE_ACT(pnode)) { | |
a257bf90 JS |
4278 | shost_for_each_device(tmp_sdev, shost) { |
4279 | if (tmp_sdev->id != scsi_id) | |
445cf4f4 JSEC |
4280 | continue; |
4281 | depth = scsi_track_queue_full(tmp_sdev, | |
5ffc266e JS |
4282 | tmp_sdev->queue_depth-1); |
4283 | if (depth <= 0) | |
4284 | continue; | |
e8b62011 JS |
4285 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4286 | "0711 detected queue full - lun queue " | |
4287 | "depth adjusted to %d.\n", depth); | |
ea2151b4 | 4288 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
5ffc266e JS |
4289 | pnode, |
4290 | tmp_sdev->lun, | |
4291 | depth+1, depth); | |
445cf4f4 JSEC |
4292 | } |
4293 | } | |
4294 | ||
876dd7d0 | 4295 | spin_lock_irqsave(&phba->hbalock, flags); |
92e3af66 | 4296 | lpfc_cmd->pCmd = NULL; |
876dd7d0 | 4297 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92e3af66 | 4298 | |
fa61a54e JS |
4299 | /* |
4300 | * If there is a thread waiting for command completion | |
4301 | * wake up the thread. | |
4302 | */ | |
a257bf90 | 4303 | spin_lock_irqsave(shost->host_lock, flags); |
fa61a54e JS |
4304 | if (lpfc_cmd->waitq) |
4305 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 4306 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 4307 | |
0bd4ca25 | 4308 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 4309 | } |
4310 | ||
34b02dcd | 4311 | /** |
3621a710 | 4312 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
4313 | * @data: A pointer to the immediate command data portion of the IOCB. |
4314 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
4315 | * | |
4316 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
4317 | * byte swapping the data to big endian format for transmission on the wire. | |
4318 | **/ | |
4319 | static void | |
4320 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
4321 | { | |
4322 | int i, j; | |
4323 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
4324 | i += sizeof(uint32_t), j++) { | |
4325 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
4326 | } | |
4327 | } | |
4328 | ||
9bad7671 | 4329 | /** |
f1126688 | 4330 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
4331 | * @vport: The virtual port for which this call is being executed. |
4332 | * @lpfc_cmd: The scsi command which needs to send. | |
4333 | * @pnode: Pointer to lpfc_nodelist. | |
4334 | * | |
4335 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 4336 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 4337 | **/ |
dea3101e | 4338 | static void |
f1126688 | 4339 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 4340 | struct lpfc_nodelist *pnode) |
dea3101e | 4341 | { |
2e0fef85 | 4342 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 4343 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
4344 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
4345 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
4346 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
4347 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 4348 | char tag[2]; |
027140ea JS |
4349 | uint8_t *ptr; |
4350 | bool sli4; | |
98bbf5f7 | 4351 | uint32_t fcpdl; |
dea3101e | 4352 | |
58da1ffb JS |
4353 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
4354 | return; | |
4355 | ||
dea3101e | 4356 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
4357 | /* clear task management bits */ |
4358 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 4359 | |
91886523 JSEC |
4360 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
4361 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 4362 | |
027140ea JS |
4363 | ptr = &fcp_cmnd->fcpCdb[0]; |
4364 | memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
4365 | if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) { | |
4366 | ptr += scsi_cmnd->cmd_len; | |
4367 | memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len)); | |
4368 | } | |
4369 | ||
7e2b19fb JS |
4370 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
4371 | switch (tag[0]) { | |
dea3101e | 4372 | case HEAD_OF_QUEUE_TAG: |
4373 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
4374 | break; | |
4375 | case ORDERED_QUEUE_TAG: | |
4376 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
4377 | break; | |
4378 | default: | |
4379 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
4380 | break; | |
4381 | } | |
4382 | } else | |
fe8f7f9c | 4383 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; |
dea3101e | 4384 | |
027140ea JS |
4385 | sli4 = (phba->sli_rev == LPFC_SLI_REV4); |
4386 | ||
dea3101e | 4387 | /* |
4388 | * There are three possibilities here - use scatter-gather segment, use | |
4389 | * the single mapping, or neither. Start the lpfc command prep by | |
4390 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
4391 | * data bde entry. | |
4392 | */ | |
a0b4f78f | 4393 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 4394 | if (datadir == DMA_TO_DEVICE) { |
4395 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
182ba753 | 4396 | iocb_cmd->ulpPU = PARM_READ_CHECK; |
3cb01c57 JS |
4397 | if (vport->cfg_first_burst_size && |
4398 | (pnode->nlp_flag & NLP_FIRSTBURST)) { | |
98bbf5f7 JS |
4399 | fcpdl = scsi_bufflen(scsi_cmnd); |
4400 | if (fcpdl < vport->cfg_first_burst_size) | |
4401 | piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl; | |
4402 | else | |
4403 | piocbq->iocb.un.fcpi.fcpi_XRdy = | |
4404 | vport->cfg_first_burst_size; | |
3cb01c57 | 4405 | } |
dea3101e | 4406 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
4407 | phba->fc4OutputRequests++; | |
4408 | } else { | |
4409 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
4410 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 4411 | fcp_cmnd->fcpCntl3 = READ_DATA; |
4412 | phba->fc4InputRequests++; | |
4413 | } | |
4414 | } else { | |
4415 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
4416 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
4417 | iocb_cmd->ulpPU = 0; | |
4418 | fcp_cmnd->fcpCntl3 = 0; | |
4419 | phba->fc4ControlRequests++; | |
4420 | } | |
e2a0a9d6 JS |
4421 | if (phba->sli_rev == 3 && |
4422 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 4423 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 4424 | /* |
4425 | * Finish initializing those IOCB fields that are independent | |
4426 | * of the scsi_cmnd request_buffer | |
4427 | */ | |
4428 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
027140ea | 4429 | if (sli4) |
6d368e53 JS |
4430 | piocbq->iocb.ulpContext = |
4431 | phba->sli4_hba.rpi_ids[pnode->nlp_rpi]; | |
dea3101e | 4432 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) |
4433 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
4434 | else |
4435 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e | 4436 | |
4437 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
4438 | piocbq->context1 = lpfc_cmd; | |
4439 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
4440 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 4441 | piocbq->vport = vport; |
dea3101e | 4442 | } |
4443 | ||
da0436e9 | 4444 | /** |
6d368e53 | 4445 | * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
4446 | * @vport: The virtual port for which this call is being executed. |
4447 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
4448 | * @lun: Logical unit number. | |
4449 | * @task_mgmt_cmd: SCSI task management command. | |
4450 | * | |
3772a991 JS |
4451 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
4452 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
4453 | * |
4454 | * Return codes: | |
4455 | * 0 - Error | |
4456 | * 1 - Success | |
4457 | **/ | |
dea3101e | 4458 | static int |
f1126688 | 4459 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 4460 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 4461 | unsigned int lun, |
dea3101e | 4462 | uint8_t task_mgmt_cmd) |
4463 | { | |
dea3101e | 4464 | struct lpfc_iocbq *piocbq; |
4465 | IOCB_t *piocb; | |
4466 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 4467 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 4468 | struct lpfc_nodelist *ndlp = rdata->pnode; |
4469 | ||
58da1ffb JS |
4470 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
4471 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 4472 | return 0; |
dea3101e | 4473 | |
dea3101e | 4474 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
4475 | piocbq->vport = vport; |
4476 | ||
dea3101e | 4477 | piocb = &piocbq->iocb; |
4478 | ||
4479 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
4480 | /* Clear out any old data in the FCP command area */ |
4481 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
4482 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 4483 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
4484 | if (vport->phba->sli_rev == 3 && |
4485 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 4486 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 4487 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 4488 | piocb->ulpContext = ndlp->nlp_rpi; |
6d368e53 JS |
4489 | if (vport->phba->sli_rev == LPFC_SLI_REV4) { |
4490 | piocb->ulpContext = | |
4491 | vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; | |
4492 | } | |
53151bbb | 4493 | piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0; |
dea3101e | 4494 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); |
4495 | ||
4496 | /* ulpTimeout is only one byte */ | |
4497 | if (lpfc_cmd->timeout > 0xff) { | |
4498 | /* | |
4499 | * Do not timeout the command at the firmware level. | |
4500 | * The driver will provide the timeout mechanism. | |
4501 | */ | |
4502 | piocb->ulpTimeout = 0; | |
f1126688 | 4503 | } else |
dea3101e | 4504 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 4505 | |
f1126688 JS |
4506 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
4507 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 4508 | |
f1126688 | 4509 | return 1; |
3772a991 JS |
4510 | } |
4511 | ||
4512 | /** | |
25985edc | 4513 | * lpfc_scsi_api_table_setup - Set up scsi api function jump table |
3772a991 JS |
4514 | * @phba: The hba struct for which this call is being executed. |
4515 | * @dev_grp: The HBA PCI-Device group number. | |
4516 | * | |
4517 | * This routine sets up the SCSI interface API function jump table in @phba | |
4518 | * struct. | |
4519 | * Returns: 0 - success, -ENODEV - failure. | |
4520 | **/ | |
4521 | int | |
4522 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
4523 | { | |
4524 | ||
f1126688 JS |
4525 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
4526 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
f1126688 | 4527 | |
3772a991 JS |
4528 | switch (dev_grp) { |
4529 | case LPFC_PCI_DEV_LP: | |
4530 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
4531 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
acd6859b | 4532 | phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3; |
3772a991 | 4533 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
19ca7609 | 4534 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; |
3772a991 | 4535 | break; |
da0436e9 JS |
4536 | case LPFC_PCI_DEV_OC: |
4537 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
4538 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
acd6859b | 4539 | phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4; |
da0436e9 | 4540 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
19ca7609 | 4541 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; |
da0436e9 | 4542 | break; |
3772a991 JS |
4543 | default: |
4544 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
4545 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
4546 | dev_grp); | |
4547 | return -ENODEV; | |
4548 | break; | |
4549 | } | |
3772a991 | 4550 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; |
84d1b006 | 4551 | phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; |
3772a991 JS |
4552 | return 0; |
4553 | } | |
4554 | ||
9bad7671 | 4555 | /** |
3621a710 | 4556 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
4557 | * @phba: The Hba for which this call is being executed. |
4558 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
4559 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
4560 | * | |
4561 | * This routine is IOCB completion routine for device reset and target reset | |
4562 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
4563 | **/ | |
7054a606 JS |
4564 | static void |
4565 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
4566 | struct lpfc_iocbq *cmdiocbq, | |
4567 | struct lpfc_iocbq *rspiocbq) | |
4568 | { | |
4569 | struct lpfc_scsi_buf *lpfc_cmd = | |
4570 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
4571 | if (lpfc_cmd) | |
4572 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4573 | return; | |
4574 | } | |
4575 | ||
9bad7671 | 4576 | /** |
3621a710 | 4577 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
4578 | * @host: The scsi host for which this call is being executed. |
4579 | * | |
4580 | * This routine provides module information about hba. | |
4581 | * | |
4582 | * Reutrn code: | |
4583 | * Pointer to char - Success. | |
4584 | **/ | |
dea3101e | 4585 | const char * |
4586 | lpfc_info(struct Scsi_Host *host) | |
4587 | { | |
2e0fef85 JS |
4588 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
4589 | struct lpfc_hba *phba = vport->phba; | |
8b68cd52 | 4590 | int len, link_speed = 0; |
dea3101e | 4591 | static char lpfcinfobuf[384]; |
4592 | ||
4593 | memset(lpfcinfobuf,0,384); | |
4594 | if (phba && phba->pcidev){ | |
4595 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
4596 | len = strlen(lpfcinfobuf); | |
4597 | snprintf(lpfcinfobuf + len, | |
4598 | 384-len, | |
4599 | " on PCI bus %02x device %02x irq %d", | |
4600 | phba->pcidev->bus->number, | |
4601 | phba->pcidev->devfn, | |
4602 | phba->pcidev->irq); | |
4603 | len = strlen(lpfcinfobuf); | |
4604 | if (phba->Port[0]) { | |
4605 | snprintf(lpfcinfobuf + len, | |
4606 | 384-len, | |
4607 | " port %s", | |
4608 | phba->Port); | |
4609 | } | |
65467b6b | 4610 | len = strlen(lpfcinfobuf); |
8b68cd52 JS |
4611 | if (phba->sli_rev <= LPFC_SLI_REV3) { |
4612 | link_speed = lpfc_sli_port_speed_get(phba); | |
4613 | } else { | |
4614 | if (phba->sli4_hba.link_state.logical_speed) | |
4615 | link_speed = | |
4616 | phba->sli4_hba.link_state.logical_speed; | |
4617 | else | |
4618 | link_speed = phba->sli4_hba.link_state.speed; | |
65467b6b | 4619 | } |
8b68cd52 JS |
4620 | if (link_speed != 0) |
4621 | snprintf(lpfcinfobuf + len, 384-len, | |
4622 | " Logical Link Speed: %d Mbps", link_speed); | |
dea3101e | 4623 | } |
4624 | return lpfcinfobuf; | |
4625 | } | |
4626 | ||
9bad7671 | 4627 | /** |
3621a710 | 4628 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
4629 | * @phba: The Hba for which this call is being executed. |
4630 | * | |
4631 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
4632 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
4633 | **/ | |
875fbdfe JSEC |
4634 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
4635 | { | |
4636 | unsigned long poll_tmo_expires = | |
4637 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
4638 | ||
0e9bb8d7 | 4639 | if (!list_empty(&phba->sli.ring[LPFC_FCP_RING].txcmplq)) |
875fbdfe JSEC |
4640 | mod_timer(&phba->fcp_poll_timer, |
4641 | poll_tmo_expires); | |
4642 | } | |
4643 | ||
9bad7671 | 4644 | /** |
3621a710 | 4645 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
4646 | * @phba: The Hba for which this call is being executed. |
4647 | * | |
4648 | * This routine starts the fcp_poll_timer of @phba. | |
4649 | **/ | |
875fbdfe JSEC |
4650 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
4651 | { | |
4652 | lpfc_poll_rearm_timer(phba); | |
4653 | } | |
4654 | ||
9bad7671 | 4655 | /** |
3621a710 | 4656 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
4657 | * @ptr: Map to lpfc_hba data structure pointer. |
4658 | * | |
4659 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
4660 | * and FCP Ring interrupt is disable. | |
4661 | **/ | |
4662 | ||
875fbdfe JSEC |
4663 | void lpfc_poll_timeout(unsigned long ptr) |
4664 | { | |
2e0fef85 | 4665 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
4666 | |
4667 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
4668 | lpfc_sli_handle_fast_ring_event(phba, |
4669 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
4670 | ||
875fbdfe JSEC |
4671 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4672 | lpfc_poll_rearm_timer(phba); | |
4673 | } | |
875fbdfe JSEC |
4674 | } |
4675 | ||
9bad7671 | 4676 | /** |
3621a710 | 4677 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
4678 | * @cmnd: Pointer to scsi_cmnd data structure. |
4679 | * @done: Pointer to done routine. | |
4680 | * | |
4681 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
4682 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
4683 | * The @done callback is invoked after driver finished processing the command. | |
4684 | * | |
4685 | * Return value : | |
4686 | * 0 - Success | |
4687 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
4688 | **/ | |
dea3101e | 4689 | static int |
b9a7c631 | 4690 | lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) |
dea3101e | 4691 | { |
2e0fef85 JS |
4692 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; |
4693 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 4694 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1c6f4ef5 | 4695 | struct lpfc_nodelist *ndlp; |
0bd4ca25 | 4696 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 4697 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 4698 | int err; |
dea3101e | 4699 | |
19a7b4ae JSEC |
4700 | err = fc_remote_port_chkready(rport); |
4701 | if (err) { | |
4702 | cmnd->result = err; | |
dea3101e | 4703 | goto out_fail_command; |
4704 | } | |
1c6f4ef5 | 4705 | ndlp = rdata->pnode; |
dea3101e | 4706 | |
bf08611b | 4707 | if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && |
acd6859b | 4708 | (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { |
e2a0a9d6 | 4709 | |
6a9c52cf JS |
4710 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
4711 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
4712 | " op:%02x str=%s without registering for" | |
4713 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
4714 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
4715 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
4716 | goto out_fail_command; | |
4717 | } | |
4718 | ||
dea3101e | 4719 | /* |
19a7b4ae JSEC |
4720 | * Catch race where our node has transitioned, but the |
4721 | * transport is still transitioning. | |
dea3101e | 4722 | */ |
6b415f5d JS |
4723 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) |
4724 | goto out_tgt_busy; | |
7dc517df | 4725 | if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) |
3496343d | 4726 | goto out_tgt_busy; |
a93ce024 | 4727 | |
19ca7609 | 4728 | lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp); |
dea3101e | 4729 | if (lpfc_cmd == NULL) { |
eaf15d5b | 4730 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 4731 | |
e8b62011 JS |
4732 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
4733 | "0707 driver's buffer pool is empty, " | |
4734 | "IO busied\n"); | |
dea3101e | 4735 | goto out_host_busy; |
4736 | } | |
4737 | ||
4738 | /* | |
4739 | * Store the midlayer's command structure for the completion phase | |
4740 | * and complete the command initialization. | |
4741 | */ | |
4742 | lpfc_cmd->pCmd = cmnd; | |
4743 | lpfc_cmd->rdata = rdata; | |
4744 | lpfc_cmd->timeout = 0; | |
977b5a0a | 4745 | lpfc_cmd->start_time = jiffies; |
dea3101e | 4746 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
dea3101e | 4747 | |
e2a0a9d6 | 4748 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf | 4749 | if (vport->phba->cfg_enable_bg) { |
737d4248 JS |
4750 | lpfc_printf_vlog(vport, |
4751 | KERN_INFO, LOG_SCSI_CMD, | |
2613470a JS |
4752 | "9033 BLKGRD: rcvd %s cmd:x%x " |
4753 | "sector x%llx cnt %u pt %x\n", | |
4754 | dif_op_str[scsi_get_prot_op(cmnd)], | |
4755 | cmnd->cmnd[0], | |
4756 | (unsigned long long)scsi_get_lba(cmnd), | |
4757 | blk_rq_sectors(cmnd->request), | |
4758 | (cmnd->cmnd[1]>>5)); | |
6a9c52cf | 4759 | } |
e2a0a9d6 JS |
4760 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); |
4761 | } else { | |
6a9c52cf | 4762 | if (vport->phba->cfg_enable_bg) { |
737d4248 JS |
4763 | lpfc_printf_vlog(vport, |
4764 | KERN_INFO, LOG_SCSI_CMD, | |
2613470a JS |
4765 | "9038 BLKGRD: rcvd PROT_NORMAL cmd: " |
4766 | "x%x sector x%llx cnt %u pt %x\n", | |
4767 | cmnd->cmnd[0], | |
4768 | (unsigned long long)scsi_get_lba(cmnd), | |
9a6b09c0 | 4769 | blk_rq_sectors(cmnd->request), |
2613470a | 4770 | (cmnd->cmnd[1]>>5)); |
6a9c52cf | 4771 | } |
e2a0a9d6 JS |
4772 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
4773 | } | |
4774 | ||
dea3101e | 4775 | if (err) |
4776 | goto out_host_busy_free_buf; | |
4777 | ||
2e0fef85 | 4778 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 4779 | |
977b5a0a | 4780 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 4781 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 4782 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
4783 | if (err) { |
4784 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 4785 | goto out_host_busy_free_buf; |
eaf15d5b | 4786 | } |
875fbdfe | 4787 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
4788 | lpfc_sli_handle_fast_ring_event(phba, |
4789 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
4790 | ||
875fbdfe JSEC |
4791 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4792 | lpfc_poll_rearm_timer(phba); | |
4793 | } | |
4794 | ||
dea3101e | 4795 | return 0; |
4796 | ||
4797 | out_host_busy_free_buf: | |
bcf4dbfa | 4798 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 4799 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 4800 | out_host_busy: |
4801 | return SCSI_MLQUEUE_HOST_BUSY; | |
4802 | ||
3496343d MC |
4803 | out_tgt_busy: |
4804 | return SCSI_MLQUEUE_TARGET_BUSY; | |
4805 | ||
dea3101e | 4806 | out_fail_command: |
b9a7c631 | 4807 | cmnd->scsi_done(cmnd); |
dea3101e | 4808 | return 0; |
4809 | } | |
4810 | ||
f281233d | 4811 | |
9bad7671 | 4812 | /** |
3621a710 | 4813 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
4814 | * @cmnd: Pointer to scsi_cmnd data structure. |
4815 | * | |
4816 | * This routine aborts @cmnd pending in base driver. | |
4817 | * | |
4818 | * Return code : | |
4819 | * 0x2003 - Error | |
4820 | * 0x2002 - Success | |
4821 | **/ | |
dea3101e | 4822 | static int |
63c59c3b | 4823 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 4824 | { |
2e0fef85 JS |
4825 | struct Scsi_Host *shost = cmnd->device->host; |
4826 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4827 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
4828 | struct lpfc_iocbq *iocb; |
4829 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 4830 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 4831 | IOCB_t *cmd, *icmd; |
3a70730a | 4832 | int ret = SUCCESS, status = 0; |
876dd7d0 | 4833 | unsigned long flags; |
fa61a54e | 4834 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 4835 | |
3a70730a | 4836 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 4837 | if (status != 0 && status != SUCCESS) |
3a70730a | 4838 | return status; |
4f2e66c6 | 4839 | |
876dd7d0 | 4840 | spin_lock_irqsave(&phba->hbalock, flags); |
4f2e66c6 JS |
4841 | /* driver queued commands are in process of being flushed */ |
4842 | if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) { | |
876dd7d0 | 4843 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 JS |
4844 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4845 | "3168 SCSI Layer abort requested I/O has been " | |
4846 | "flushed by LLD.\n"); | |
4847 | return FAILED; | |
4848 | } | |
4849 | ||
0bd4ca25 | 4850 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
92e3af66 | 4851 | if (!lpfc_cmd || !lpfc_cmd->pCmd) { |
876dd7d0 | 4852 | spin_unlock_irqrestore(&phba->hbalock, flags); |
eee8877e JS |
4853 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4854 | "2873 SCSI Layer I/O Abort Request IO CMPL Status " | |
5cd049a5 | 4855 | "x%x ID %d LUN %d\n", |
3a70730a | 4856 | SUCCESS, cmnd->device->id, cmnd->device->lun); |
eee8877e JS |
4857 | return SUCCESS; |
4858 | } | |
dea3101e | 4859 | |
4f2e66c6 JS |
4860 | iocb = &lpfc_cmd->cur_iocbq; |
4861 | /* the command is in process of being cancelled */ | |
4862 | if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { | |
876dd7d0 | 4863 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 JS |
4864 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4865 | "3169 SCSI Layer abort requested I/O has been " | |
4866 | "cancelled by LLD.\n"); | |
4867 | return FAILED; | |
4868 | } | |
0bd4ca25 JSEC |
4869 | /* |
4870 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
4871 | * points to a different SCSI command, then the driver has | |
4872 | * already completed this command, but the midlayer did not | |
4f2e66c6 | 4873 | * see the completion before the eh fired. Just return SUCCESS. |
0bd4ca25 | 4874 | */ |
4f2e66c6 JS |
4875 | if (lpfc_cmd->pCmd != cmnd) { |
4876 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
4877 | "3170 SCSI Layer abort requested I/O has been " | |
4878 | "completed by LLD.\n"); | |
4879 | goto out_unlock; | |
4880 | } | |
dea3101e | 4881 | |
0bd4ca25 | 4882 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 4883 | |
4f2e66c6 | 4884 | abtsiocb = __lpfc_sli_get_iocbq(phba); |
0bd4ca25 JSEC |
4885 | if (abtsiocb == NULL) { |
4886 | ret = FAILED; | |
4f2e66c6 | 4887 | goto out_unlock; |
dea3101e | 4888 | } |
4889 | ||
afbd8d88 JS |
4890 | /* Indicate the IO is being aborted by the driver. */ |
4891 | iocb->iocb_flag |= LPFC_DRIVER_ABORTED; | |
4892 | ||
dea3101e | 4893 | /* |
0bd4ca25 JSEC |
4894 | * The scsi command can not be in txq and it is in flight because the |
4895 | * pCmd is still pointig at the SCSI command we have to abort. There | |
4896 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 4897 | */ |
dea3101e | 4898 | |
0bd4ca25 JSEC |
4899 | cmd = &iocb->iocb; |
4900 | icmd = &abtsiocb->iocb; | |
4901 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
4902 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
4903 | if (phba->sli_rev == LPFC_SLI_REV4) |
4904 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
4905 | else | |
4906 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 4907 | |
0bd4ca25 JSEC |
4908 | icmd->ulpLe = 1; |
4909 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
4910 | |
4911 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
4912 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
341af102 | 4913 | abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
5ffc266e | 4914 | |
2e0fef85 | 4915 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
4916 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
4917 | else | |
4918 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 4919 | |
0bd4ca25 | 4920 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 4921 | abtsiocb->vport = vport; |
4f2e66c6 | 4922 | /* no longer need the lock after this point */ |
876dd7d0 | 4923 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 | 4924 | |
3772a991 JS |
4925 | if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) == |
4926 | IOCB_ERROR) { | |
0bd4ca25 JSEC |
4927 | lpfc_sli_release_iocbq(phba, abtsiocb); |
4928 | ret = FAILED; | |
4929 | goto out; | |
4930 | } | |
dea3101e | 4931 | |
875fbdfe | 4932 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
4933 | lpfc_sli_handle_fast_ring_event(phba, |
4934 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 4935 | |
fa61a54e | 4936 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 4937 | /* Wait for abort to complete */ |
fa61a54e JS |
4938 | wait_event_timeout(waitq, |
4939 | (lpfc_cmd->pCmd != cmnd), | |
256ec0d0 | 4940 | msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000)); |
fa61a54e | 4941 | lpfc_cmd->waitq = NULL; |
dea3101e | 4942 | |
0bd4ca25 JSEC |
4943 | if (lpfc_cmd->pCmd == cmnd) { |
4944 | ret = FAILED; | |
e8b62011 JS |
4945 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
4946 | "0748 abort handler timed out waiting " | |
247ca945 JS |
4947 | "for abortng I/O (xri:x%x) to complete: " |
4948 | "ret %#x, ID %d, LUN %d\n", | |
4949 | iocb->sli4_xritag, ret, | |
4950 | cmnd->device->id, cmnd->device->lun); | |
dea3101e | 4951 | } |
4f2e66c6 | 4952 | goto out; |
dea3101e | 4953 | |
4f2e66c6 | 4954 | out_unlock: |
876dd7d0 | 4955 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 | 4956 | out: |
e8b62011 JS |
4957 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4958 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
5cd049a5 CH |
4959 | "LUN %d\n", ret, cmnd->device->id, |
4960 | cmnd->device->lun); | |
63c59c3b | 4961 | return ret; |
8fa728a2 JG |
4962 | } |
4963 | ||
bbb9d180 JS |
4964 | static char * |
4965 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
4966 | { | |
4967 | switch (task_mgmt_cmd) { | |
4968 | case FCP_ABORT_TASK_SET: | |
4969 | return "ABORT_TASK_SET"; | |
4970 | case FCP_CLEAR_TASK_SET: | |
4971 | return "FCP_CLEAR_TASK_SET"; | |
4972 | case FCP_BUS_RESET: | |
4973 | return "FCP_BUS_RESET"; | |
4974 | case FCP_LUN_RESET: | |
4975 | return "FCP_LUN_RESET"; | |
4976 | case FCP_TARGET_RESET: | |
4977 | return "FCP_TARGET_RESET"; | |
4978 | case FCP_CLEAR_ACA: | |
4979 | return "FCP_CLEAR_ACA"; | |
4980 | case FCP_TERMINATE_TASK: | |
4981 | return "FCP_TERMINATE_TASK"; | |
4982 | default: | |
4983 | return "unknown"; | |
4984 | } | |
4985 | } | |
4986 | ||
53151bbb JS |
4987 | |
4988 | /** | |
4989 | * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed | |
4990 | * @vport: The virtual port for which this call is being executed. | |
4991 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
4992 | * | |
4993 | * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded | |
4994 | * | |
4995 | * Return code : | |
4996 | * 0x2003 - Error | |
4997 | * 0x2002 - Success | |
4998 | **/ | |
4999 | static int | |
5000 | lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd) | |
5001 | { | |
5002 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
5003 | uint32_t rsp_info; | |
5004 | uint32_t rsp_len; | |
5005 | uint8_t rsp_info_code; | |
5006 | int ret = FAILED; | |
5007 | ||
5008 | ||
5009 | if (fcprsp == NULL) | |
5010 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5011 | "0703 fcp_rsp is missing\n"); | |
5012 | else { | |
5013 | rsp_info = fcprsp->rspStatus2; | |
5014 | rsp_len = be32_to_cpu(fcprsp->rspRspLen); | |
5015 | rsp_info_code = fcprsp->rspInfo3; | |
5016 | ||
5017 | ||
5018 | lpfc_printf_vlog(vport, KERN_INFO, | |
5019 | LOG_FCP, | |
5020 | "0706 fcp_rsp valid 0x%x," | |
5021 | " rsp len=%d code 0x%x\n", | |
5022 | rsp_info, | |
5023 | rsp_len, rsp_info_code); | |
5024 | ||
5025 | if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) { | |
5026 | switch (rsp_info_code) { | |
5027 | case RSP_NO_FAILURE: | |
5028 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5029 | "0715 Task Mgmt No Failure\n"); | |
5030 | ret = SUCCESS; | |
5031 | break; | |
5032 | case RSP_TM_NOT_SUPPORTED: /* TM rejected */ | |
5033 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5034 | "0716 Task Mgmt Target " | |
5035 | "reject\n"); | |
5036 | break; | |
5037 | case RSP_TM_NOT_COMPLETED: /* TM failed */ | |
5038 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5039 | "0717 Task Mgmt Target " | |
5040 | "failed TM\n"); | |
5041 | break; | |
5042 | case RSP_TM_INVALID_LU: /* TM to invalid LU! */ | |
5043 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5044 | "0718 Task Mgmt to invalid " | |
5045 | "LUN\n"); | |
5046 | break; | |
5047 | } | |
5048 | } | |
5049 | } | |
5050 | return ret; | |
5051 | } | |
5052 | ||
5053 | ||
9bad7671 | 5054 | /** |
bbb9d180 JS |
5055 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
5056 | * @vport: The virtual port for which this call is being executed. | |
5057 | * @rdata: Pointer to remote port local data | |
5058 | * @tgt_id: Target ID of remote device. | |
5059 | * @lun_id: Lun number for the TMF | |
5060 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 5061 | * |
bbb9d180 JS |
5062 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
5063 | * a remote port. | |
9bad7671 | 5064 | * |
bbb9d180 JS |
5065 | * Return Code: |
5066 | * 0x2003 - Error | |
5067 | * 0x2002 - Success. | |
9bad7671 | 5068 | **/ |
dea3101e | 5069 | static int |
bbb9d180 JS |
5070 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
5071 | unsigned tgt_id, unsigned int lun_id, | |
5072 | uint8_t task_mgmt_cmd) | |
dea3101e | 5073 | { |
2e0fef85 | 5074 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 5075 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
5076 | struct lpfc_iocbq *iocbq; |
5077 | struct lpfc_iocbq *iocbqrsp; | |
5989b8d4 | 5078 | struct lpfc_nodelist *pnode = rdata->pnode; |
bbb9d180 | 5079 | int ret; |
915caaaf | 5080 | int status; |
dea3101e | 5081 | |
5989b8d4 | 5082 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 5083 | return FAILED; |
bbb9d180 | 5084 | |
19ca7609 | 5085 | lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode); |
dea3101e | 5086 | if (lpfc_cmd == NULL) |
915caaaf | 5087 | return FAILED; |
0c411222 | 5088 | lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo; |
0b18ac42 | 5089 | lpfc_cmd->rdata = rdata; |
dea3101e | 5090 | |
bbb9d180 JS |
5091 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
5092 | task_mgmt_cmd); | |
915caaaf JS |
5093 | if (!status) { |
5094 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
5095 | return FAILED; | |
5096 | } | |
dea3101e | 5097 | |
bbb9d180 | 5098 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 5099 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
5100 | if (iocbqrsp == NULL) { |
5101 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
5102 | return FAILED; | |
5103 | } | |
5a0916b4 | 5104 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
bbb9d180 | 5105 | |
e8b62011 | 5106 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
bbb9d180 | 5107 | "0702 Issue %s to TGT %d LUN %d " |
6d368e53 | 5108 | "rpi x%x nlp_flag x%x Data: x%x x%x\n", |
bbb9d180 | 5109 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, |
6d368e53 JS |
5110 | pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, |
5111 | iocbq->iocb_flag); | |
bbb9d180 | 5112 | |
3772a991 | 5113 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 5114 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
53151bbb JS |
5115 | if ((status != IOCB_SUCCESS) || |
5116 | (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) { | |
bbb9d180 | 5117 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
6d368e53 JS |
5118 | "0727 TMF %s to TGT %d LUN %d failed (%d, %d) " |
5119 | "iocb_flag x%x\n", | |
bbb9d180 JS |
5120 | lpfc_taskmgmt_name(task_mgmt_cmd), |
5121 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
6d368e53 JS |
5122 | iocbqrsp->iocb.un.ulpWord[4], |
5123 | iocbq->iocb_flag); | |
53151bbb JS |
5124 | /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */ |
5125 | if (status == IOCB_SUCCESS) { | |
5126 | if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR) | |
5127 | /* Something in the FCP_RSP was invalid. | |
5128 | * Check conditions */ | |
5129 | ret = lpfc_check_fcp_rsp(vport, lpfc_cmd); | |
5130 | else | |
5131 | ret = FAILED; | |
5132 | } else if (status == IOCB_TIMEDOUT) { | |
5133 | ret = TIMEOUT_ERROR; | |
5134 | } else { | |
5135 | ret = FAILED; | |
5136 | } | |
5137 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
5138 | } else | |
bbb9d180 JS |
5139 | ret = SUCCESS; |
5140 | ||
6175c02a | 5141 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
5142 | |
5143 | if (ret != TIMEOUT_ERROR) | |
5144 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
5145 | ||
5146 | return ret; | |
5147 | } | |
5148 | ||
5149 | /** | |
5150 | * lpfc_chk_tgt_mapped - | |
5151 | * @vport: The virtual port to check on | |
5152 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5153 | * | |
5154 | * This routine delays until the scsi target (aka rport) for the | |
5155 | * command exists (is present and logged in) or we declare it non-existent. | |
5156 | * | |
5157 | * Return code : | |
5158 | * 0x2003 - Error | |
5159 | * 0x2002 - Success | |
5160 | **/ | |
5161 | static int | |
5162 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
5163 | { | |
5164 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 5165 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
5166 | unsigned long later; |
5167 | ||
1c6f4ef5 JS |
5168 | if (!rdata) { |
5169 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5170 | "0797 Tgt Map rport failure: rdata x%p\n", rdata); | |
5171 | return FAILED; | |
5172 | } | |
5173 | pnode = rdata->pnode; | |
bbb9d180 JS |
5174 | /* |
5175 | * If target is not in a MAPPED state, delay until | |
5176 | * target is rediscovered or devloss timeout expires. | |
5177 | */ | |
5178 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
5179 | while (time_after(later, jiffies)) { | |
5180 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
5181 | return FAILED; | |
5182 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
5183 | return SUCCESS; | |
5184 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
5185 | rdata = cmnd->device->hostdata; | |
5186 | if (!rdata) | |
5187 | return FAILED; | |
5188 | pnode = rdata->pnode; | |
5189 | } | |
5190 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
5191 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
5192 | return FAILED; | |
5193 | return SUCCESS; | |
5194 | } | |
5195 | ||
5196 | /** | |
5197 | * lpfc_reset_flush_io_context - | |
5198 | * @vport: The virtual port (scsi_host) for the flush context | |
5199 | * @tgt_id: If aborting by Target contect - specifies the target id | |
5200 | * @lun_id: If aborting by Lun context - specifies the lun id | |
5201 | * @context: specifies the context level to flush at. | |
5202 | * | |
5203 | * After a reset condition via TMF, we need to flush orphaned i/o | |
5204 | * contexts from the adapter. This routine aborts any contexts | |
5205 | * outstanding, then waits for their completions. The wait is | |
5206 | * bounded by devloss_tmo though. | |
5207 | * | |
5208 | * Return code : | |
5209 | * 0x2003 - Error | |
5210 | * 0x2002 - Success | |
5211 | **/ | |
5212 | static int | |
5213 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
5214 | uint64_t lun_id, lpfc_ctx_cmd context) | |
5215 | { | |
5216 | struct lpfc_hba *phba = vport->phba; | |
5217 | unsigned long later; | |
5218 | int cnt; | |
5219 | ||
5220 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 5221 | if (cnt) |
51ef4c26 | 5222 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
bbb9d180 | 5223 | tgt_id, lun_id, context); |
915caaaf JS |
5224 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
5225 | while (time_after(later, jiffies) && cnt) { | |
5226 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 5227 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 5228 | } |
dea3101e | 5229 | if (cnt) { |
e8b62011 | 5230 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
5231 | "0724 I/O flush failure for context %s : cnt x%x\n", |
5232 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
5233 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
5234 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
5235 | cnt); | |
5236 | return FAILED; | |
dea3101e | 5237 | } |
bbb9d180 JS |
5238 | return SUCCESS; |
5239 | } | |
5240 | ||
5241 | /** | |
5242 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
5243 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5244 | * | |
5245 | * This routine does a device reset by sending a LUN_RESET task management | |
5246 | * command. | |
5247 | * | |
5248 | * Return code : | |
5249 | * 0x2003 - Error | |
5250 | * 0x2002 - Success | |
5251 | **/ | |
5252 | static int | |
5253 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
5254 | { | |
5255 | struct Scsi_Host *shost = cmnd->device->host; | |
5256 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
5257 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 5258 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
5259 | unsigned tgt_id = cmnd->device->id; |
5260 | unsigned int lun_id = cmnd->device->lun; | |
5261 | struct lpfc_scsi_event_header scsi_event; | |
53151bbb | 5262 | int status; |
bbb9d180 | 5263 | |
1c6f4ef5 JS |
5264 | if (!rdata) { |
5265 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5266 | "0798 Device Reset rport failure: rdata x%p\n", rdata); | |
5267 | return FAILED; | |
5268 | } | |
5269 | pnode = rdata->pnode; | |
589a52d6 | 5270 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 5271 | if (status != 0 && status != SUCCESS) |
589a52d6 | 5272 | return status; |
bbb9d180 JS |
5273 | |
5274 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
5275 | if (status == FAILED) { | |
5276 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5277 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
5278 | return FAILED; | |
5279 | } | |
5280 | ||
5281 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
5282 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
5283 | scsi_event.lun = lun_id; | |
5284 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
5285 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
5286 | ||
5287 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
5288 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
5289 | ||
5290 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
5291 | FCP_LUN_RESET); | |
5292 | ||
5293 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5294 | "0713 SCSI layer issued Device Reset (%d, %d) " | |
5295 | "return x%x\n", tgt_id, lun_id, status); | |
5296 | ||
5297 | /* | |
5298 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
5299 | * or if the TMF failed, they may be in an indeterminate state. | |
5300 | * So, continue on. | |
5301 | * We will report success if all the i/o aborts successfully. | |
5302 | */ | |
53151bbb JS |
5303 | if (status == SUCCESS) |
5304 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
bbb9d180 | 5305 | LPFC_CTX_LUN); |
53151bbb JS |
5306 | |
5307 | return status; | |
bbb9d180 JS |
5308 | } |
5309 | ||
5310 | /** | |
5311 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
5312 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5313 | * | |
5314 | * This routine does a target reset by sending a TARGET_RESET task management | |
5315 | * command. | |
5316 | * | |
5317 | * Return code : | |
5318 | * 0x2003 - Error | |
5319 | * 0x2002 - Success | |
5320 | **/ | |
5321 | static int | |
5322 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
5323 | { | |
5324 | struct Scsi_Host *shost = cmnd->device->host; | |
5325 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
5326 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 5327 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
5328 | unsigned tgt_id = cmnd->device->id; |
5329 | unsigned int lun_id = cmnd->device->lun; | |
5330 | struct lpfc_scsi_event_header scsi_event; | |
53151bbb | 5331 | int status; |
bbb9d180 | 5332 | |
1c6f4ef5 JS |
5333 | if (!rdata) { |
5334 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5335 | "0799 Target Reset rport failure: rdata x%p\n", rdata); | |
5336 | return FAILED; | |
5337 | } | |
5338 | pnode = rdata->pnode; | |
589a52d6 | 5339 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 5340 | if (status != 0 && status != SUCCESS) |
589a52d6 | 5341 | return status; |
bbb9d180 JS |
5342 | |
5343 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
5344 | if (status == FAILED) { | |
5345 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5346 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
5347 | return FAILED; | |
5348 | } | |
5349 | ||
5350 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
5351 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
5352 | scsi_event.lun = 0; | |
5353 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
5354 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
5355 | ||
5356 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
5357 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
5358 | ||
5359 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
5360 | FCP_TARGET_RESET); | |
5361 | ||
5362 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5363 | "0723 SCSI layer issued Target Reset (%d, %d) " | |
5364 | "return x%x\n", tgt_id, lun_id, status); | |
5365 | ||
5366 | /* | |
5367 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
5368 | * or if the TMF failed, they may be in an indeterminate state. | |
5369 | * So, continue on. | |
5370 | * We will report success if all the i/o aborts successfully. | |
5371 | */ | |
53151bbb JS |
5372 | if (status == SUCCESS) |
5373 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3a70730a | 5374 | LPFC_CTX_TGT); |
53151bbb | 5375 | return status; |
dea3101e | 5376 | } |
5377 | ||
9bad7671 | 5378 | /** |
3621a710 | 5379 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
5380 | * @cmnd: Pointer to scsi_cmnd data structure. |
5381 | * | |
bbb9d180 JS |
5382 | * This routine does target reset to all targets on @cmnd->device->host. |
5383 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 5384 | * |
bbb9d180 JS |
5385 | * Return code : |
5386 | * 0x2003 - Error | |
5387 | * 0x2002 - Success | |
9bad7671 | 5388 | **/ |
94d0e7b8 | 5389 | static int |
7054a606 | 5390 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 5391 | { |
2e0fef85 JS |
5392 | struct Scsi_Host *shost = cmnd->device->host; |
5393 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 5394 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 5395 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
5396 | int match; |
5397 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
5398 | |
5399 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
5400 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
5401 | scsi_event.lun = 0; | |
5402 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
5403 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
5404 | ||
bbb9d180 JS |
5405 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
5406 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 5407 | |
bf08611b | 5408 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 5409 | if (status != 0 && status != SUCCESS) |
bf08611b | 5410 | return status; |
bbb9d180 | 5411 | |
dea3101e | 5412 | /* |
5413 | * Since the driver manages a single bus device, reset all | |
5414 | * targets known to the driver. Should any target reset | |
5415 | * fail, this routine returns failure to the midlayer. | |
5416 | */ | |
e17da18e | 5417 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 5418 | /* Search for mapped node by target ID */ |
dea3101e | 5419 | match = 0; |
2e0fef85 JS |
5420 | spin_lock_irq(shost->host_lock); |
5421 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
5422 | if (!NLP_CHK_NODE_ACT(ndlp)) |
5423 | continue; | |
a6571c6e JS |
5424 | if (vport->phba->cfg_fcp2_no_tgt_reset && |
5425 | (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE)) | |
5426 | continue; | |
685f0bf7 | 5427 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 5428 | ndlp->nlp_sid == i && |
685f0bf7 | 5429 | ndlp->rport) { |
dea3101e | 5430 | match = 1; |
5431 | break; | |
5432 | } | |
5433 | } | |
2e0fef85 | 5434 | spin_unlock_irq(shost->host_lock); |
dea3101e | 5435 | if (!match) |
5436 | continue; | |
bbb9d180 JS |
5437 | |
5438 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
5439 | i, 0, FCP_TARGET_RESET); | |
5440 | ||
5441 | if (status != SUCCESS) { | |
e8b62011 JS |
5442 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5443 | "0700 Bus Reset on target %d failed\n", | |
5444 | i); | |
915caaaf | 5445 | ret = FAILED; |
dea3101e | 5446 | } |
5447 | } | |
6175c02a | 5448 | /* |
bbb9d180 JS |
5449 | * We have to clean up i/o as : they may be orphaned by the TMFs |
5450 | * above; or if any of the TMFs failed, they may be in an | |
5451 | * indeterminate state. | |
5452 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 5453 | */ |
bbb9d180 JS |
5454 | |
5455 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
5456 | if (status != SUCCESS) | |
0bd4ca25 | 5457 | ret = FAILED; |
bbb9d180 | 5458 | |
e8b62011 JS |
5459 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5460 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 5461 | return ret; |
5462 | } | |
5463 | ||
27b01b82 JS |
5464 | /** |
5465 | * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt | |
5466 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5467 | * | |
5468 | * This routine does host reset to the adaptor port. It brings the HBA | |
5469 | * offline, performs a board restart, and then brings the board back online. | |
5470 | * The lpfc_offline calls lpfc_sli_hba_down which will abort and local | |
5471 | * reject all outstanding SCSI commands to the host and error returned | |
5472 | * back to SCSI mid-level. As this will be SCSI mid-level's last resort | |
5473 | * of error handling, it will only return error if resetting of the adapter | |
5474 | * is not successful; in all other cases, will return success. | |
5475 | * | |
5476 | * Return code : | |
5477 | * 0x2003 - Error | |
5478 | * 0x2002 - Success | |
5479 | **/ | |
5480 | static int | |
5481 | lpfc_host_reset_handler(struct scsi_cmnd *cmnd) | |
5482 | { | |
5483 | struct Scsi_Host *shost = cmnd->device->host; | |
5484 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
5485 | struct lpfc_hba *phba = vport->phba; | |
5486 | int rc, ret = SUCCESS; | |
5487 | ||
a88dbb6a JS |
5488 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5489 | "3172 SCSI layer issued Host Reset Data:\n"); | |
5490 | ||
618a5230 | 5491 | lpfc_offline_prep(phba, LPFC_MBX_WAIT); |
27b01b82 JS |
5492 | lpfc_offline(phba); |
5493 | rc = lpfc_sli_brdrestart(phba); | |
5494 | if (rc) | |
5495 | ret = FAILED; | |
a88dbb6a JS |
5496 | rc = lpfc_online(phba); |
5497 | if (rc) | |
5498 | ret = FAILED; | |
27b01b82 JS |
5499 | lpfc_unblock_mgmt_io(phba); |
5500 | ||
a88dbb6a JS |
5501 | if (ret == FAILED) { |
5502 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5503 | "3323 Failed host reset, bring it offline\n"); | |
5504 | lpfc_sli4_offline_eratt(phba); | |
5505 | } | |
27b01b82 JS |
5506 | return ret; |
5507 | } | |
5508 | ||
9bad7671 | 5509 | /** |
3621a710 | 5510 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
5511 | * @sdev: Pointer to scsi_device. |
5512 | * | |
5513 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
5514 | * globally available list of scsi buffers. This routine also makes sure scsi | |
5515 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
5516 | * of scsi buffer exists for the lifetime of the driver. | |
5517 | * | |
5518 | * Return codes: | |
5519 | * non-0 - Error | |
5520 | * 0 - Success | |
5521 | **/ | |
dea3101e | 5522 | static int |
5523 | lpfc_slave_alloc(struct scsi_device *sdev) | |
5524 | { | |
2e0fef85 JS |
5525 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5526 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 5527 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 5528 | uint32_t total = 0; |
dea3101e | 5529 | uint32_t num_to_alloc = 0; |
3772a991 | 5530 | int num_allocated = 0; |
d7c47992 | 5531 | uint32_t sdev_cnt; |
dea3101e | 5532 | |
19a7b4ae | 5533 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 5534 | return -ENXIO; |
5535 | ||
19a7b4ae | 5536 | sdev->hostdata = rport->dd_data; |
d7c47992 | 5537 | sdev_cnt = atomic_inc_return(&phba->sdev_cnt); |
dea3101e | 5538 | |
5539 | /* | |
5540 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
5541 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
5542 | * HBA limit conveyed to the midlayer via the host structure. The |
5543 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
5544 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 5545 | */ |
5546 | total = phba->total_scsi_bufs; | |
3de2a653 | 5547 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 | 5548 | |
d7c47992 JS |
5549 | /* If allocated buffers are enough do nothing */ |
5550 | if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) | |
5551 | return 0; | |
5552 | ||
92d7f7b0 JS |
5553 | /* Allow some exchanges to be available always to complete discovery */ |
5554 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
5555 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
5556 | "0704 At limitation of %d preallocated " | |
5557 | "command buffers\n", total); | |
dea3101e | 5558 | return 0; |
92d7f7b0 JS |
5559 | /* Allow some exchanges to be available always to complete discovery */ |
5560 | } else if (total + num_to_alloc > | |
5561 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
5562 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
5563 | "0705 Allocation request of %d " | |
5564 | "command buffers will exceed max of %d. " | |
5565 | "Reducing allocation request to %d.\n", | |
5566 | num_to_alloc, phba->cfg_hba_queue_depth, | |
5567 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 5568 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
5569 | } | |
3772a991 JS |
5570 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
5571 | if (num_to_alloc != num_allocated) { | |
96f7077f JS |
5572 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5573 | "0708 Allocation request of %d " | |
5574 | "command buffers did not succeed. " | |
5575 | "Allocated %d buffers.\n", | |
5576 | num_to_alloc, num_allocated); | |
dea3101e | 5577 | } |
1c6f4ef5 JS |
5578 | if (num_allocated > 0) |
5579 | phba->total_scsi_bufs += num_allocated; | |
dea3101e | 5580 | return 0; |
5581 | } | |
5582 | ||
9bad7671 | 5583 | /** |
3621a710 | 5584 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
5585 | * @sdev: Pointer to scsi_device. |
5586 | * | |
5587 | * This routine configures following items | |
5588 | * - Tag command queuing support for @sdev if supported. | |
9bad7671 JS |
5589 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. |
5590 | * | |
5591 | * Return codes: | |
5592 | * 0 - Success | |
5593 | **/ | |
dea3101e | 5594 | static int |
5595 | lpfc_slave_configure(struct scsi_device *sdev) | |
5596 | { | |
2e0fef85 JS |
5597 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5598 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 5599 | |
5600 | if (sdev->tagged_supported) | |
3de2a653 | 5601 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 5602 | else |
3de2a653 | 5603 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 5604 | |
875fbdfe | 5605 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
5606 | lpfc_sli_handle_fast_ring_event(phba, |
5607 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
5608 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
5609 | lpfc_poll_rearm_timer(phba); | |
5610 | } | |
5611 | ||
dea3101e | 5612 | return 0; |
5613 | } | |
5614 | ||
9bad7671 | 5615 | /** |
3621a710 | 5616 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
5617 | * @sdev: Pointer to scsi_device. |
5618 | * | |
5619 | * This routine sets @sdev hostatdata filed to null. | |
5620 | **/ | |
dea3101e | 5621 | static void |
5622 | lpfc_slave_destroy(struct scsi_device *sdev) | |
5623 | { | |
d7c47992 JS |
5624 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5625 | struct lpfc_hba *phba = vport->phba; | |
5626 | atomic_dec(&phba->sdev_cnt); | |
dea3101e | 5627 | sdev->hostdata = NULL; |
5628 | return; | |
5629 | } | |
5630 | ||
92d7f7b0 | 5631 | |
dea3101e | 5632 | struct scsi_host_template lpfc_template = { |
5633 | .module = THIS_MODULE, | |
5634 | .name = LPFC_DRIVER_NAME, | |
5635 | .info = lpfc_info, | |
5636 | .queuecommand = lpfc_queuecommand, | |
5637 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
5638 | .eh_device_reset_handler = lpfc_device_reset_handler, |
5639 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 5640 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
27b01b82 | 5641 | .eh_host_reset_handler = lpfc_host_reset_handler, |
dea3101e | 5642 | .slave_alloc = lpfc_slave_alloc, |
5643 | .slave_configure = lpfc_slave_configure, | |
5644 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 5645 | .scan_finished = lpfc_scan_finished, |
dea3101e | 5646 | .this_id = -1, |
83108bd3 | 5647 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e | 5648 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
5649 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 5650 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 5651 | .max_sectors = 0xFFFF, |
f1c3b0fc | 5652 | .vendor_id = LPFC_NL_VENDOR_ID, |
5ffc266e | 5653 | .change_queue_depth = lpfc_change_queue_depth, |
fe8f7f9c | 5654 | .change_queue_type = lpfc_change_queue_type, |
dea3101e | 5655 | }; |
3de2a653 JS |
5656 | |
5657 | struct scsi_host_template lpfc_vport_template = { | |
5658 | .module = THIS_MODULE, | |
5659 | .name = LPFC_DRIVER_NAME, | |
5660 | .info = lpfc_info, | |
5661 | .queuecommand = lpfc_queuecommand, | |
5662 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
5663 | .eh_device_reset_handler = lpfc_device_reset_handler, |
5664 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
5665 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
5666 | .slave_alloc = lpfc_slave_alloc, | |
5667 | .slave_configure = lpfc_slave_configure, | |
5668 | .slave_destroy = lpfc_slave_destroy, | |
5669 | .scan_finished = lpfc_scan_finished, | |
5670 | .this_id = -1, | |
83108bd3 | 5671 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
5672 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
5673 | .use_clustering = ENABLE_CLUSTERING, | |
5674 | .shost_attrs = lpfc_vport_attrs, | |
5675 | .max_sectors = 0xFFFF, | |
5ffc266e | 5676 | .change_queue_depth = lpfc_change_queue_depth, |
fe8f7f9c | 5677 | .change_queue_type = lpfc_change_queue_type, |
3de2a653 | 5678 | }; |