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dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
e47c9093 | 4 | * Copyright (C) 2004-2008 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> |
22 | #include <linux/interrupt.h> | |
a90f5684 | 23 | #include <linux/delay.h> |
e2a0a9d6 | 24 | #include <asm/unaligned.h> |
dea3101e | 25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 28 | #include <scsi/scsi_eh.h> |
dea3101e | 29 | #include <scsi/scsi_host.h> |
30 | #include <scsi/scsi_tcq.h> | |
31 | #include <scsi/scsi_transport_fc.h> | |
32 | ||
33 | #include "lpfc_version.h" | |
34 | #include "lpfc_hw.h" | |
35 | #include "lpfc_sli.h" | |
ea2151b4 | 36 | #include "lpfc_nl.h" |
dea3101e | 37 | #include "lpfc_disc.h" |
38 | #include "lpfc_scsi.h" | |
39 | #include "lpfc.h" | |
40 | #include "lpfc_logmsg.h" | |
41 | #include "lpfc_crtn.h" | |
92d7f7b0 | 42 | #include "lpfc_vport.h" |
dea3101e | 43 | |
44 | #define LPFC_RESET_WAIT 2 | |
45 | #define LPFC_ABORT_WAIT 2 | |
46 | ||
e2a0a9d6 JS |
47 | int _dump_buf_done; |
48 | ||
49 | static char *dif_op_str[] = { | |
50 | "SCSI_PROT_NORMAL", | |
51 | "SCSI_PROT_READ_INSERT", | |
52 | "SCSI_PROT_WRITE_STRIP", | |
53 | "SCSI_PROT_READ_STRIP", | |
54 | "SCSI_PROT_WRITE_INSERT", | |
55 | "SCSI_PROT_READ_PASS", | |
56 | "SCSI_PROT_WRITE_PASS", | |
57 | "SCSI_PROT_READ_CONVERT", | |
58 | "SCSI_PROT_WRITE_CONVERT" | |
59 | }; | |
60 | ||
61 | static void | |
62 | lpfc_debug_save_data(struct scsi_cmnd *cmnd) | |
63 | { | |
64 | void *src, *dst; | |
65 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
66 | ||
67 | if (!_dump_buf_data) { | |
68 | printk(KERN_ERR "BLKGRD ERROR %s _dump_buf_data is NULL\n", | |
69 | __func__); | |
70 | return; | |
71 | } | |
72 | ||
73 | ||
74 | if (!sgde) { | |
75 | printk(KERN_ERR "BLKGRD ERROR: data scatterlist is null\n"); | |
76 | return; | |
77 | } | |
78 | ||
79 | dst = (void *) _dump_buf_data; | |
80 | while (sgde) { | |
81 | src = sg_virt(sgde); | |
82 | memcpy(dst, src, sgde->length); | |
83 | dst += sgde->length; | |
84 | sgde = sg_next(sgde); | |
85 | } | |
86 | } | |
87 | ||
88 | static void | |
89 | lpfc_debug_save_dif(struct scsi_cmnd *cmnd) | |
90 | { | |
91 | void *src, *dst; | |
92 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
93 | ||
94 | if (!_dump_buf_dif) { | |
95 | printk(KERN_ERR "BLKGRD ERROR %s _dump_buf_data is NULL\n", | |
96 | __func__); | |
97 | return; | |
98 | } | |
99 | ||
100 | if (!sgde) { | |
101 | printk(KERN_ERR "BLKGRD ERROR: prot scatterlist is null\n"); | |
102 | return; | |
103 | } | |
104 | ||
105 | dst = _dump_buf_dif; | |
106 | while (sgde) { | |
107 | src = sg_virt(sgde); | |
108 | memcpy(dst, src, sgde->length); | |
109 | dst += sgde->length; | |
110 | sgde = sg_next(sgde); | |
111 | } | |
112 | } | |
113 | ||
ea2151b4 JS |
114 | /** |
115 | * lpfc_update_stats: Update statistical data for the command completion. | |
116 | * @phba: Pointer to HBA object. | |
117 | * @lpfc_cmd: lpfc scsi command object pointer. | |
118 | * | |
119 | * This function is called when there is a command completion and this | |
120 | * function updates the statistical data for the command completion. | |
121 | **/ | |
122 | static void | |
123 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
124 | { | |
125 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
126 | struct lpfc_nodelist *pnode = rdata->pnode; | |
127 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
128 | unsigned long flags; | |
129 | struct Scsi_Host *shost = cmd->device->host; | |
130 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
131 | unsigned long latency; | |
132 | int i; | |
133 | ||
134 | if (cmd->result) | |
135 | return; | |
136 | ||
9f1e1b50 JS |
137 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
138 | ||
ea2151b4 JS |
139 | spin_lock_irqsave(shost->host_lock, flags); |
140 | if (!vport->stat_data_enabled || | |
141 | vport->stat_data_blocked || | |
142 | !pnode->lat_data || | |
143 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
144 | spin_unlock_irqrestore(shost->host_lock, flags); | |
145 | return; | |
146 | } | |
ea2151b4 JS |
147 | |
148 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
149 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
150 | phba->bucket_step; | |
9f1e1b50 JS |
151 | /* check array subscript bounds */ |
152 | if (i < 0) | |
153 | i = 0; | |
154 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
155 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
156 | } else { |
157 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
158 | if (latency <= (phba->bucket_base + | |
159 | ((1<<i)*phba->bucket_step))) | |
160 | break; | |
161 | } | |
162 | ||
163 | pnode->lat_data[i].cmd_count++; | |
164 | spin_unlock_irqrestore(shost->host_lock, flags); | |
165 | } | |
166 | ||
ea2151b4 JS |
167 | /** |
168 | * lpfc_send_sdev_queuedepth_change_event: Posts a queuedepth change | |
169 | * event. | |
170 | * @phba: Pointer to HBA context object. | |
171 | * @vport: Pointer to vport object. | |
172 | * @ndlp: Pointer to FC node associated with the target. | |
173 | * @lun: Lun number of the scsi device. | |
174 | * @old_val: Old value of the queue depth. | |
175 | * @new_val: New value of the queue depth. | |
176 | * | |
177 | * This function sends an event to the mgmt application indicating | |
178 | * there is a change in the scsi device queue depth. | |
179 | **/ | |
180 | static void | |
181 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
182 | struct lpfc_vport *vport, | |
183 | struct lpfc_nodelist *ndlp, | |
184 | uint32_t lun, | |
185 | uint32_t old_val, | |
186 | uint32_t new_val) | |
187 | { | |
188 | struct lpfc_fast_path_event *fast_path_evt; | |
189 | unsigned long flags; | |
190 | ||
191 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
192 | if (!fast_path_evt) | |
193 | return; | |
194 | ||
195 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
196 | FC_REG_SCSI_EVENT; | |
197 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
198 | LPFC_EVENT_VARQUEDEPTH; | |
199 | ||
200 | /* Report all luns with change in queue depth */ | |
201 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
202 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
203 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
204 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
205 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
206 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
207 | } | |
208 | ||
209 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
210 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
211 | fast_path_evt->vport = vport; | |
212 | ||
213 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
214 | spin_lock_irqsave(&phba->hbalock, flags); | |
215 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
216 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
217 | lpfc_worker_wake_up(phba); | |
218 | ||
219 | return; | |
220 | } | |
221 | ||
9bad7671 | 222 | /** |
eaf15d5b | 223 | * lpfc_rampdown_queue_depth: Post RAMP_DOWN_QUEUE event to worker thread. |
9bad7671 JS |
224 | * @phba: The Hba for which this call is being executed. |
225 | * | |
226 | * This routine is called when there is resource error in driver or firmware. | |
227 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
228 | * posts at most 1 event each second. This routine wakes up worker thread of | |
229 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
230 | * | |
231 | * This routine should be called with no lock held. | |
232 | **/ | |
92d7f7b0 | 233 | void |
eaf15d5b | 234 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
235 | { |
236 | unsigned long flags; | |
5e9d9b82 | 237 | uint32_t evt_posted; |
92d7f7b0 JS |
238 | |
239 | spin_lock_irqsave(&phba->hbalock, flags); | |
240 | atomic_inc(&phba->num_rsrc_err); | |
241 | phba->last_rsrc_error_time = jiffies; | |
242 | ||
243 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
244 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
245 | return; | |
246 | } | |
247 | ||
248 | phba->last_ramp_down_time = jiffies; | |
249 | ||
250 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
251 | ||
252 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
253 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
254 | if (!evt_posted) | |
92d7f7b0 | 255 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
256 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
257 | ||
5e9d9b82 JS |
258 | if (!evt_posted) |
259 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
260 | return; |
261 | } | |
262 | ||
9bad7671 JS |
263 | /** |
264 | * lpfc_rampup_queue_depth: Post RAMP_UP_QUEUE event for worker thread. | |
265 | * @phba: The Hba for which this call is being executed. | |
266 | * | |
267 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
268 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
269 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
270 | * to process WORKER_RAM_DOWN_EVENT event. | |
271 | * | |
272 | * This routine should be called with no lock held. | |
273 | **/ | |
92d7f7b0 | 274 | static inline void |
3de2a653 | 275 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
92d7f7b0 JS |
276 | struct scsi_device *sdev) |
277 | { | |
278 | unsigned long flags; | |
3de2a653 | 279 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 280 | uint32_t evt_posted; |
92d7f7b0 JS |
281 | atomic_inc(&phba->num_cmd_success); |
282 | ||
3de2a653 | 283 | if (vport->cfg_lun_queue_depth <= sdev->queue_depth) |
92d7f7b0 | 284 | return; |
92d7f7b0 JS |
285 | spin_lock_irqsave(&phba->hbalock, flags); |
286 | if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) || | |
287 | ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) { | |
288 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
289 | return; | |
290 | } | |
92d7f7b0 JS |
291 | phba->last_ramp_up_time = jiffies; |
292 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
293 | ||
294 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
295 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
296 | if (!evt_posted) | |
92d7f7b0 | 297 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
298 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
299 | ||
5e9d9b82 JS |
300 | if (!evt_posted) |
301 | lpfc_worker_wake_up(phba); | |
302 | return; | |
92d7f7b0 JS |
303 | } |
304 | ||
9bad7671 JS |
305 | /** |
306 | * lpfc_ramp_down_queue_handler: WORKER_RAMP_DOWN_QUEUE event handler. | |
307 | * @phba: The Hba for which this call is being executed. | |
308 | * | |
309 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
310 | * thread.This routine reduces queue depth for all scsi device on each vport | |
311 | * associated with @phba. | |
312 | **/ | |
92d7f7b0 JS |
313 | void |
314 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
315 | { | |
549e55cd JS |
316 | struct lpfc_vport **vports; |
317 | struct Scsi_Host *shost; | |
92d7f7b0 | 318 | struct scsi_device *sdev; |
ea2151b4 | 319 | unsigned long new_queue_depth, old_queue_depth; |
92d7f7b0 | 320 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 321 | int i; |
ea2151b4 | 322 | struct lpfc_rport_data *rdata; |
92d7f7b0 JS |
323 | |
324 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
325 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
326 | ||
549e55cd JS |
327 | vports = lpfc_create_vport_work_array(phba); |
328 | if (vports != NULL) | |
09372820 | 329 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
330 | shost = lpfc_shost_from_vport(vports[i]); |
331 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 332 | new_queue_depth = |
549e55cd JS |
333 | sdev->queue_depth * num_rsrc_err / |
334 | (num_rsrc_err + num_cmd_success); | |
335 | if (!new_queue_depth) | |
336 | new_queue_depth = sdev->queue_depth - 1; | |
337 | else | |
338 | new_queue_depth = sdev->queue_depth - | |
339 | new_queue_depth; | |
ea2151b4 | 340 | old_queue_depth = sdev->queue_depth; |
549e55cd JS |
341 | if (sdev->ordered_tags) |
342 | scsi_adjust_queue_depth(sdev, | |
343 | MSG_ORDERED_TAG, | |
344 | new_queue_depth); | |
345 | else | |
346 | scsi_adjust_queue_depth(sdev, | |
347 | MSG_SIMPLE_TAG, | |
348 | new_queue_depth); | |
ea2151b4 JS |
349 | rdata = sdev->hostdata; |
350 | if (rdata) | |
351 | lpfc_send_sdev_queuedepth_change_event( | |
352 | phba, vports[i], | |
353 | rdata->pnode, | |
354 | sdev->lun, old_queue_depth, | |
355 | new_queue_depth); | |
549e55cd | 356 | } |
92d7f7b0 | 357 | } |
09372820 | 358 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
359 | atomic_set(&phba->num_rsrc_err, 0); |
360 | atomic_set(&phba->num_cmd_success, 0); | |
361 | } | |
362 | ||
9bad7671 JS |
363 | /** |
364 | * lpfc_ramp_up_queue_handler: WORKER_RAMP_UP_QUEUE event handler. | |
365 | * @phba: The Hba for which this call is being executed. | |
366 | * | |
367 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
368 | * thread.This routine increases queue depth for all scsi device on each vport | |
369 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
370 | * num_cmd_success to zero. | |
371 | **/ | |
92d7f7b0 JS |
372 | void |
373 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
374 | { | |
549e55cd JS |
375 | struct lpfc_vport **vports; |
376 | struct Scsi_Host *shost; | |
92d7f7b0 | 377 | struct scsi_device *sdev; |
549e55cd | 378 | int i; |
ea2151b4 | 379 | struct lpfc_rport_data *rdata; |
549e55cd JS |
380 | |
381 | vports = lpfc_create_vport_work_array(phba); | |
382 | if (vports != NULL) | |
09372820 | 383 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
384 | shost = lpfc_shost_from_vport(vports[i]); |
385 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
386 | if (vports[i]->cfg_lun_queue_depth <= |
387 | sdev->queue_depth) | |
388 | continue; | |
549e55cd JS |
389 | if (sdev->ordered_tags) |
390 | scsi_adjust_queue_depth(sdev, | |
391 | MSG_ORDERED_TAG, | |
392 | sdev->queue_depth+1); | |
393 | else | |
394 | scsi_adjust_queue_depth(sdev, | |
395 | MSG_SIMPLE_TAG, | |
396 | sdev->queue_depth+1); | |
ea2151b4 JS |
397 | rdata = sdev->hostdata; |
398 | if (rdata) | |
399 | lpfc_send_sdev_queuedepth_change_event( | |
400 | phba, vports[i], | |
401 | rdata->pnode, | |
402 | sdev->lun, | |
403 | sdev->queue_depth - 1, | |
404 | sdev->queue_depth); | |
549e55cd | 405 | } |
92d7f7b0 | 406 | } |
09372820 | 407 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
408 | atomic_set(&phba->num_rsrc_err, 0); |
409 | atomic_set(&phba->num_cmd_success, 0); | |
410 | } | |
411 | ||
a8e497d5 JS |
412 | /** |
413 | * lpfc_scsi_dev_block: set all scsi hosts to block state. | |
414 | * @phba: Pointer to HBA context object. | |
415 | * | |
416 | * This function walks vport list and set each SCSI host to block state | |
417 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
418 | * with EEH when device's PCI slot has been permanently disabled. | |
419 | **/ | |
420 | void | |
421 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
422 | { | |
423 | struct lpfc_vport **vports; | |
424 | struct Scsi_Host *shost; | |
425 | struct scsi_device *sdev; | |
426 | struct fc_rport *rport; | |
427 | int i; | |
428 | ||
429 | vports = lpfc_create_vport_work_array(phba); | |
430 | if (vports != NULL) | |
431 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { | |
432 | shost = lpfc_shost_from_vport(vports[i]); | |
433 | shost_for_each_device(sdev, shost) { | |
434 | rport = starget_to_rport(scsi_target(sdev)); | |
435 | fc_remote_port_delete(rport); | |
436 | } | |
437 | } | |
438 | lpfc_destroy_vport_work_array(phba, vports); | |
439 | } | |
440 | ||
9bad7671 JS |
441 | /** |
442 | * lpfc_new_scsi_buf: Scsi buffer allocator. | |
443 | * @vport: The virtual port for which this call being executed. | |
444 | * | |
dea3101e | 445 | * This routine allocates a scsi buffer, which contains all the necessary |
446 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
447 | * contains information to build the IOCB. The DMAable region contains | |
9bad7671 JS |
448 | * memory for the FCP CMND, FCP RSP, and the initial BPL. In addition to |
449 | * allocating memory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
dea3101e | 450 | * and the BPL BDE is setup in the IOCB. |
9bad7671 JS |
451 | * |
452 | * Return codes: | |
453 | * NULL - Error | |
454 | * Pointer to lpfc_scsi_buf data structure - Success | |
455 | **/ | |
dea3101e | 456 | static struct lpfc_scsi_buf * |
2e0fef85 | 457 | lpfc_new_scsi_buf(struct lpfc_vport *vport) |
dea3101e | 458 | { |
2e0fef85 | 459 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 460 | struct lpfc_scsi_buf *psb; |
461 | struct ulp_bde64 *bpl; | |
462 | IOCB_t *iocb; | |
34b02dcd JS |
463 | dma_addr_t pdma_phys_fcp_cmd; |
464 | dma_addr_t pdma_phys_fcp_rsp; | |
465 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 466 | uint16_t iotag; |
dea3101e | 467 | |
bbfbbbc1 | 468 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); |
dea3101e | 469 | if (!psb) |
470 | return NULL; | |
dea3101e | 471 | |
472 | /* | |
473 | * Get memory from the pci pool to map the virt space to pci bus space | |
474 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
475 | * struct fcp_rsp and the number of bde's necessary to support the | |
476 | * sg_tablesize. | |
477 | */ | |
478 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
479 | &psb->dma_handle); | |
480 | if (!psb->data) { | |
481 | kfree(psb); | |
482 | return NULL; | |
483 | } | |
484 | ||
485 | /* Initialize virtual ptrs to dma_buf region. */ | |
486 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
487 | ||
604a3e30 JB |
488 | /* Allocate iotag for psb->cur_iocbq. */ |
489 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
490 | if (iotag == 0) { | |
491 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
492 | psb->data, psb->dma_handle); | |
493 | kfree (psb); | |
494 | return NULL; | |
495 | } | |
0bd4ca25 | 496 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 497 | |
dea3101e | 498 | psb->fcp_cmnd = psb->data; |
499 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
500 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
501 | sizeof(struct fcp_rsp); | |
502 | ||
503 | /* Initialize local short-hand pointers. */ | |
504 | bpl = psb->fcp_bpl; | |
34b02dcd JS |
505 | pdma_phys_fcp_cmd = psb->dma_handle; |
506 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
507 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
508 | sizeof(struct fcp_rsp); | |
dea3101e | 509 | |
510 | /* | |
511 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
512 | * list bdes. Initialize the first two and leave the rest for | |
513 | * queuecommand. | |
514 | */ | |
34b02dcd JS |
515 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); |
516 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
517 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
518 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
9f1e1b50 | 519 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); |
dea3101e | 520 | |
521 | /* Setup the physical region for the FCP RSP */ | |
34b02dcd JS |
522 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); |
523 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
524 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
525 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
9f1e1b50 | 526 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); |
dea3101e | 527 | |
528 | /* | |
529 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
530 | * initialize it with all known data now. | |
531 | */ | |
dea3101e | 532 | iocb = &psb->cur_iocbq.iocb; |
533 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
e2a0a9d6 JS |
534 | if ((phba->sli_rev == 3) && |
535 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
34b02dcd JS |
536 | /* fill in immediate fcp command BDE */ |
537 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
538 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
539 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
540 | unsli3.fcp_ext.icd); | |
541 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
542 | iocb->ulpBdeCount = 0; | |
543 | iocb->ulpLe = 0; | |
544 | /* fill in responce BDE */ | |
545 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
546 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
547 | sizeof(struct fcp_rsp); | |
548 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
549 | putPaddrLow(pdma_phys_fcp_rsp); | |
550 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
551 | putPaddrHigh(pdma_phys_fcp_rsp); | |
552 | } else { | |
553 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
554 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
555 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_bpl); | |
556 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_bpl); | |
557 | iocb->ulpBdeCount = 1; | |
558 | iocb->ulpLe = 1; | |
559 | } | |
dea3101e | 560 | iocb->ulpClass = CLASS3; |
561 | ||
562 | return psb; | |
563 | } | |
564 | ||
9bad7671 JS |
565 | /** |
566 | * lpfc_get_scsi_buf: Get a scsi buffer from lpfc_scsi_buf_list list of Hba. | |
567 | * @phba: The Hba for which this call is being executed. | |
568 | * | |
569 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
570 | * and returns to caller. | |
571 | * | |
572 | * Return codes: | |
573 | * NULL - Error | |
574 | * Pointer to lpfc_scsi_buf - Success | |
575 | **/ | |
455c53ec | 576 | static struct lpfc_scsi_buf* |
875fbdfe | 577 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 578 | { |
0bd4ca25 JSEC |
579 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
580 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 581 | unsigned long iflag = 0; |
0bd4ca25 | 582 | |
875fbdfe | 583 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 584 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
585 | if (lpfc_cmd) { |
586 | lpfc_cmd->seg_cnt = 0; | |
587 | lpfc_cmd->nonsg_phys = 0; | |
e2a0a9d6 | 588 | lpfc_cmd->prot_seg_cnt = 0; |
1dcb58e5 | 589 | } |
875fbdfe | 590 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
591 | return lpfc_cmd; |
592 | } | |
dea3101e | 593 | |
9bad7671 JS |
594 | /** |
595 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba lpfc_scsi_buf_list list. | |
596 | * @phba: The Hba for which this call is being executed. | |
597 | * @psb: The scsi buffer which is being released. | |
598 | * | |
599 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
600 | * lpfc_scsi_buf_list list. | |
601 | **/ | |
0bd4ca25 | 602 | static void |
92d7f7b0 | 603 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 604 | { |
875fbdfe | 605 | unsigned long iflag = 0; |
dea3101e | 606 | |
875fbdfe | 607 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 608 | psb->pCmd = NULL; |
dea3101e | 609 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 610 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e | 611 | } |
612 | ||
9bad7671 JS |
613 | /** |
614 | * lpfc_scsi_prep_dma_buf: Routine to do DMA mapping for scsi buffer. | |
615 | * @phba: The Hba for which this call is being executed. | |
616 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
617 | * | |
618 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
619 | * field of @lpfc_cmd. This routine scans through sg elements and format the | |
620 | * bdea. This routine also initializes all IOCB fields which are dependent on | |
621 | * scsi command request buffer. | |
622 | * | |
623 | * Return codes: | |
624 | * 1 - Error | |
625 | * 0 - Success | |
626 | **/ | |
dea3101e | 627 | static int |
92d7f7b0 | 628 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 629 | { |
630 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
631 | struct scatterlist *sgel = NULL; | |
632 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
633 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
634 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
34b02dcd | 635 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 636 | dma_addr_t physaddr; |
34b02dcd | 637 | uint32_t num_bde = 0; |
a0b4f78f | 638 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 639 | |
640 | /* | |
641 | * There are three possibilities here - use scatter-gather segment, use | |
642 | * the single mapping, or neither. Start the lpfc command prep by | |
643 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
644 | * data bde entry. | |
645 | */ | |
646 | bpl += 2; | |
c59fd9eb | 647 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 648 | /* |
649 | * The driver stores the segment count returned from pci_map_sg | |
650 | * because this a count of dma-mappings used to map the use_sg | |
651 | * pages. They are not guaranteed to be the same for those | |
652 | * architectures that implement an IOMMU. | |
653 | */ | |
dea3101e | 654 | |
c59fd9eb FT |
655 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
656 | scsi_sg_count(scsi_cmnd), datadir); | |
657 | if (unlikely(!nseg)) | |
658 | return 1; | |
659 | ||
a0b4f78f | 660 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 661 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
662 | printk(KERN_ERR "%s: Too many sg segments from " | |
e2a0a9d6 | 663 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 664 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 665 | lpfc_cmd->seg_cnt); |
a0b4f78f | 666 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 667 | return 1; |
668 | } | |
669 | ||
670 | /* | |
671 | * The driver established a maximum scatter-gather segment count | |
672 | * during probe that limits the number of sg elements in any | |
673 | * single scsi command. Just run through the seg_cnt and format | |
674 | * the bde's. | |
34b02dcd JS |
675 | * When using SLI-3 the driver will try to fit all the BDEs into |
676 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
677 | * does for SLI-2 mode. | |
dea3101e | 678 | */ |
34b02dcd | 679 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 680 | physaddr = sg_dma_address(sgel); |
34b02dcd | 681 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 682 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
34b02dcd JS |
683 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
684 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
685 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
686 | data_bde->addrLow = putPaddrLow(physaddr); | |
687 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
688 | data_bde++; | |
689 | } else { | |
690 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
691 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
692 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
693 | bpl->addrLow = | |
694 | le32_to_cpu(putPaddrLow(physaddr)); | |
695 | bpl->addrHigh = | |
696 | le32_to_cpu(putPaddrHigh(physaddr)); | |
697 | bpl++; | |
698 | } | |
dea3101e | 699 | } |
c59fd9eb | 700 | } |
dea3101e | 701 | |
702 | /* | |
703 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
704 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
705 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
706 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 707 | */ |
e2a0a9d6 JS |
708 | if (phba->sli_rev == 3 && |
709 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
34b02dcd JS |
710 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
711 | /* | |
712 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
713 | * This I/O has more than 3 BDE so the 1st data bde will | |
714 | * be a BPL that is filled in here. | |
715 | */ | |
716 | physaddr = lpfc_cmd->dma_handle; | |
717 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
718 | data_bde->tus.f.bdeSize = (num_bde * | |
719 | sizeof(struct ulp_bde64)); | |
720 | physaddr += (sizeof(struct fcp_cmnd) + | |
721 | sizeof(struct fcp_rsp) + | |
722 | (2 * sizeof(struct ulp_bde64))); | |
723 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
724 | data_bde->addrLow = putPaddrLow(physaddr); | |
725 | /* ebde count includes the responce bde and data bpl */ | |
726 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; | |
727 | } else { | |
728 | /* ebde count includes the responce bde and data bdes */ | |
729 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); | |
730 | } | |
731 | } else { | |
732 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
733 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
734 | } | |
09372820 | 735 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
736 | |
737 | /* | |
738 | * Due to difference in data length between DIF/non-DIF paths, | |
739 | * we need to set word 4 of IOCB here | |
740 | */ | |
741 | iocb_cmd->un.fcpi.fcpi_parm = le32_to_cpu(scsi_bufflen(scsi_cmnd)); | |
742 | return 0; | |
743 | } | |
744 | ||
745 | /* | |
746 | * Given a scsi cmnd, determine the BlockGuard profile to be used | |
747 | * with the cmd | |
748 | */ | |
749 | static int | |
750 | lpfc_sc_to_sli_prof(struct scsi_cmnd *sc) | |
751 | { | |
752 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
753 | uint8_t ret_prof = LPFC_PROF_INVALID; | |
754 | ||
755 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
756 | switch (scsi_get_prot_op(sc)) { | |
757 | case SCSI_PROT_READ_INSERT: | |
758 | case SCSI_PROT_WRITE_STRIP: | |
759 | ret_prof = LPFC_PROF_AST2; | |
760 | break; | |
761 | ||
762 | case SCSI_PROT_READ_STRIP: | |
763 | case SCSI_PROT_WRITE_INSERT: | |
764 | ret_prof = LPFC_PROF_A1; | |
765 | break; | |
766 | ||
767 | case SCSI_PROT_READ_CONVERT: | |
768 | case SCSI_PROT_WRITE_CONVERT: | |
769 | ret_prof = LPFC_PROF_AST1; | |
770 | break; | |
771 | ||
772 | case SCSI_PROT_READ_PASS: | |
773 | case SCSI_PROT_WRITE_PASS: | |
774 | case SCSI_PROT_NORMAL: | |
775 | default: | |
776 | printk(KERN_ERR "Bad op/guard:%d/%d combination\n", | |
777 | scsi_get_prot_op(sc), guard_type); | |
778 | break; | |
779 | ||
780 | } | |
781 | } else if (guard_type == SHOST_DIX_GUARD_CRC) { | |
782 | switch (scsi_get_prot_op(sc)) { | |
783 | case SCSI_PROT_READ_STRIP: | |
784 | case SCSI_PROT_WRITE_INSERT: | |
785 | ret_prof = LPFC_PROF_A1; | |
786 | break; | |
787 | ||
788 | case SCSI_PROT_READ_PASS: | |
789 | case SCSI_PROT_WRITE_PASS: | |
790 | ret_prof = LPFC_PROF_C1; | |
791 | break; | |
792 | ||
793 | case SCSI_PROT_READ_CONVERT: | |
794 | case SCSI_PROT_WRITE_CONVERT: | |
795 | case SCSI_PROT_READ_INSERT: | |
796 | case SCSI_PROT_WRITE_STRIP: | |
797 | case SCSI_PROT_NORMAL: | |
798 | default: | |
799 | printk(KERN_ERR "Bad op/guard:%d/%d combination\n", | |
800 | scsi_get_prot_op(sc), guard_type); | |
801 | break; | |
802 | } | |
803 | } else { | |
804 | /* unsupported format */ | |
805 | BUG(); | |
806 | } | |
807 | ||
808 | return ret_prof; | |
809 | } | |
810 | ||
811 | struct scsi_dif_tuple { | |
812 | __be16 guard_tag; /* Checksum */ | |
813 | __be16 app_tag; /* Opaque storage */ | |
814 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
815 | }; | |
816 | ||
817 | static inline unsigned | |
818 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
819 | { | |
820 | return sc->device->sector_size; | |
821 | } | |
822 | ||
823 | /** | |
824 | * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command | |
825 | * @sc: in: SCSI command | |
826 | * @apptagmask out: app tag mask | |
827 | * @apptagval out: app tag value | |
828 | * @reftag out: ref tag (reference tag) | |
829 | * | |
830 | * Description: | |
831 | * Extract DIF paramters from the command if possible. Otherwise, | |
832 | * use default paratmers. | |
833 | * | |
834 | **/ | |
835 | static inline void | |
836 | lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask, | |
837 | uint16_t *apptagval, uint32_t *reftag) | |
838 | { | |
839 | struct scsi_dif_tuple *spt; | |
840 | unsigned char op = scsi_get_prot_op(sc); | |
841 | unsigned int protcnt = scsi_prot_sg_count(sc); | |
842 | static int cnt; | |
843 | ||
844 | if (protcnt && (op == SCSI_PROT_WRITE_STRIP || | |
845 | op == SCSI_PROT_WRITE_PASS || | |
846 | op == SCSI_PROT_WRITE_CONVERT)) { | |
847 | ||
848 | cnt++; | |
849 | spt = page_address(sg_page(scsi_prot_sglist(sc))) + | |
850 | scsi_prot_sglist(sc)[0].offset; | |
851 | *apptagmask = 0; | |
852 | *apptagval = 0; | |
853 | *reftag = cpu_to_be32(spt->ref_tag); | |
854 | ||
855 | } else { | |
856 | /* SBC defines ref tag to be lower 32bits of LBA */ | |
857 | *reftag = (uint32_t) (0xffffffff & scsi_get_lba(sc)); | |
858 | *apptagmask = 0; | |
859 | *apptagval = 0; | |
860 | } | |
861 | } | |
862 | ||
863 | /* | |
864 | * This function sets up buffer list for protection groups of | |
865 | * type LPFC_PG_TYPE_NO_DIF | |
866 | * | |
867 | * This is usually used when the HBA is instructed to generate | |
868 | * DIFs and insert them into data stream (or strip DIF from | |
869 | * incoming data stream) | |
870 | * | |
871 | * The buffer list consists of just one protection group described | |
872 | * below: | |
873 | * +-------------------------+ | |
874 | * start of prot group --> | PDE_1 | | |
875 | * +-------------------------+ | |
876 | * | Data BDE | | |
877 | * +-------------------------+ | |
878 | * |more Data BDE's ... (opt)| | |
879 | * +-------------------------+ | |
880 | * | |
881 | * @sc: pointer to scsi command we're working on | |
882 | * @bpl: pointer to buffer list for protection groups | |
883 | * @datacnt: number of segments of data that have been dma mapped | |
884 | * | |
885 | * Note: Data s/g buffers have been dma mapped | |
886 | */ | |
887 | static int | |
888 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
889 | struct ulp_bde64 *bpl, int datasegcnt) | |
890 | { | |
891 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
892 | struct lpfc_pde *pde1 = NULL; | |
893 | dma_addr_t physaddr; | |
894 | int i = 0, num_bde = 0; | |
895 | int datadir = sc->sc_data_direction; | |
896 | int prof = LPFC_PROF_INVALID; | |
897 | unsigned blksize; | |
898 | uint32_t reftag; | |
899 | uint16_t apptagmask, apptagval; | |
900 | ||
901 | pde1 = (struct lpfc_pde *) bpl; | |
902 | prof = lpfc_sc_to_sli_prof(sc); | |
903 | ||
904 | if (prof == LPFC_PROF_INVALID) | |
905 | goto out; | |
906 | ||
907 | /* extract some info from the scsi command for PDE1*/ | |
908 | blksize = lpfc_cmd_blksize(sc); | |
909 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
910 | ||
911 | /* setup PDE1 with what we have */ | |
912 | lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize, | |
913 | BG_EC_STOP_ERR); | |
914 | lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag); | |
915 | ||
916 | num_bde++; | |
917 | bpl++; | |
918 | ||
919 | /* assumption: caller has already run dma_map_sg on command data */ | |
920 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
921 | physaddr = sg_dma_address(sgde); | |
922 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
923 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
924 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
925 | if (datadir == DMA_TO_DEVICE) | |
926 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
927 | else | |
928 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
929 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
930 | bpl++; | |
931 | num_bde++; | |
932 | } | |
933 | ||
934 | out: | |
935 | return num_bde; | |
936 | } | |
937 | ||
938 | /* | |
939 | * This function sets up buffer list for protection groups of | |
940 | * type LPFC_PG_TYPE_DIF_BUF | |
941 | * | |
942 | * This is usually used when DIFs are in their own buffers, | |
943 | * separate from the data. The HBA can then by instructed | |
944 | * to place the DIFs in the outgoing stream. For read operations, | |
945 | * The HBA could extract the DIFs and place it in DIF buffers. | |
946 | * | |
947 | * The buffer list for this type consists of one or more of the | |
948 | * protection groups described below: | |
949 | * +-------------------------+ | |
950 | * start of first prot group --> | PDE_1 | | |
951 | * +-------------------------+ | |
952 | * | PDE_3 (Prot BDE) | | |
953 | * +-------------------------+ | |
954 | * | Data BDE | | |
955 | * +-------------------------+ | |
956 | * |more Data BDE's ... (opt)| | |
957 | * +-------------------------+ | |
958 | * start of new prot group --> | PDE_1 | | |
959 | * +-------------------------+ | |
960 | * | ... | | |
961 | * +-------------------------+ | |
962 | * | |
963 | * @sc: pointer to scsi command we're working on | |
964 | * @bpl: pointer to buffer list for protection groups | |
965 | * @datacnt: number of segments of data that have been dma mapped | |
966 | * @protcnt: number of segment of protection data that have been dma mapped | |
967 | * | |
968 | * Note: It is assumed that both data and protection s/g buffers have been | |
969 | * mapped for DMA | |
970 | */ | |
971 | static int | |
972 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
973 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
974 | { | |
975 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
976 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
977 | struct lpfc_pde *pde1 = NULL; | |
978 | struct ulp_bde64 *prot_bde = NULL; | |
979 | dma_addr_t dataphysaddr, protphysaddr; | |
980 | unsigned short curr_data = 0, curr_prot = 0; | |
981 | unsigned int split_offset, protgroup_len; | |
982 | unsigned int protgrp_blks, protgrp_bytes; | |
983 | unsigned int remainder, subtotal; | |
984 | int prof = LPFC_PROF_INVALID; | |
985 | int datadir = sc->sc_data_direction; | |
986 | unsigned char pgdone = 0, alldone = 0; | |
987 | unsigned blksize; | |
988 | uint32_t reftag; | |
989 | uint16_t apptagmask, apptagval; | |
990 | int num_bde = 0; | |
991 | ||
992 | sgpe = scsi_prot_sglist(sc); | |
993 | sgde = scsi_sglist(sc); | |
994 | ||
995 | if (!sgpe || !sgde) { | |
996 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
997 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
998 | sgpe, sgde); | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | prof = lpfc_sc_to_sli_prof(sc); | |
1003 | if (prof == LPFC_PROF_INVALID) | |
1004 | goto out; | |
1005 | ||
1006 | /* extract some info from the scsi command for PDE1*/ | |
1007 | blksize = lpfc_cmd_blksize(sc); | |
1008 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1009 | ||
1010 | split_offset = 0; | |
1011 | do { | |
1012 | /* setup the first PDE_1 */ | |
1013 | pde1 = (struct lpfc_pde *) bpl; | |
1014 | ||
1015 | lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize, | |
1016 | BG_EC_STOP_ERR); | |
1017 | lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag); | |
1018 | ||
1019 | num_bde++; | |
1020 | bpl++; | |
1021 | ||
1022 | /* setup the first BDE that points to protection buffer */ | |
1023 | prot_bde = (struct ulp_bde64 *) bpl; | |
1024 | protphysaddr = sg_dma_address(sgpe); | |
1025 | prot_bde->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
1026 | prot_bde->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
1027 | protgroup_len = sg_dma_len(sgpe); | |
1028 | ||
1029 | ||
1030 | /* must be integer multiple of the DIF block length */ | |
1031 | BUG_ON(protgroup_len % 8); | |
1032 | ||
1033 | protgrp_blks = protgroup_len / 8; | |
1034 | protgrp_bytes = protgrp_blks * blksize; | |
1035 | ||
1036 | prot_bde->tus.f.bdeSize = protgroup_len; | |
1037 | if (datadir == DMA_TO_DEVICE) | |
1038 | prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1039 | else | |
1040 | prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1041 | prot_bde->tus.w = le32_to_cpu(bpl->tus.w); | |
1042 | ||
1043 | curr_prot++; | |
1044 | num_bde++; | |
1045 | ||
1046 | /* setup BDE's for data blocks associated with DIF data */ | |
1047 | pgdone = 0; | |
1048 | subtotal = 0; /* total bytes processed for current prot grp */ | |
1049 | while (!pgdone) { | |
1050 | if (!sgde) { | |
1051 | printk(KERN_ERR "%s Invalid data segment\n", | |
1052 | __func__); | |
1053 | return 0; | |
1054 | } | |
1055 | bpl++; | |
1056 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
1057 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
1058 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
1059 | ||
1060 | remainder = sg_dma_len(sgde) - split_offset; | |
1061 | ||
1062 | if ((subtotal + remainder) <= protgrp_bytes) { | |
1063 | /* we can use this whole buffer */ | |
1064 | bpl->tus.f.bdeSize = remainder; | |
1065 | split_offset = 0; | |
1066 | ||
1067 | if ((subtotal + remainder) == protgrp_bytes) | |
1068 | pgdone = 1; | |
1069 | } else { | |
1070 | /* must split this buffer with next prot grp */ | |
1071 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
1072 | split_offset += bpl->tus.f.bdeSize; | |
1073 | } | |
1074 | ||
1075 | subtotal += bpl->tus.f.bdeSize; | |
1076 | ||
1077 | if (datadir == DMA_TO_DEVICE) | |
1078 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1079 | else | |
1080 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1081 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1082 | ||
1083 | num_bde++; | |
1084 | curr_data++; | |
1085 | ||
1086 | if (split_offset) | |
1087 | break; | |
1088 | ||
1089 | /* Move to the next s/g segment if possible */ | |
1090 | sgde = sg_next(sgde); | |
1091 | } | |
1092 | ||
1093 | /* are we done ? */ | |
1094 | if (curr_prot == protcnt) { | |
1095 | alldone = 1; | |
1096 | } else if (curr_prot < protcnt) { | |
1097 | /* advance to next prot buffer */ | |
1098 | sgpe = sg_next(sgpe); | |
1099 | bpl++; | |
1100 | ||
1101 | /* update the reference tag */ | |
1102 | reftag += protgrp_blks; | |
1103 | } else { | |
1104 | /* if we're here, we have a bug */ | |
1105 | printk(KERN_ERR "BLKGRD: bug in %s\n", __func__); | |
1106 | } | |
1107 | ||
1108 | } while (!alldone); | |
1109 | ||
1110 | out: | |
1111 | ||
1112 | ||
1113 | return num_bde; | |
1114 | } | |
1115 | /* | |
1116 | * Given a SCSI command that supports DIF, determine composition of protection | |
1117 | * groups involved in setting up buffer lists | |
1118 | * | |
1119 | * Returns: | |
1120 | * for DIF (for both read and write) | |
1121 | * */ | |
1122 | static int | |
1123 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
1124 | { | |
1125 | int ret = LPFC_PG_TYPE_INVALID; | |
1126 | unsigned char op = scsi_get_prot_op(sc); | |
1127 | ||
1128 | switch (op) { | |
1129 | case SCSI_PROT_READ_STRIP: | |
1130 | case SCSI_PROT_WRITE_INSERT: | |
1131 | ret = LPFC_PG_TYPE_NO_DIF; | |
1132 | break; | |
1133 | case SCSI_PROT_READ_INSERT: | |
1134 | case SCSI_PROT_WRITE_STRIP: | |
1135 | case SCSI_PROT_READ_PASS: | |
1136 | case SCSI_PROT_WRITE_PASS: | |
1137 | case SCSI_PROT_WRITE_CONVERT: | |
1138 | case SCSI_PROT_READ_CONVERT: | |
1139 | ret = LPFC_PG_TYPE_DIF_BUF; | |
1140 | break; | |
1141 | default: | |
1142 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1143 | "9021 Unsupported protection op:%d\n", op); | |
1144 | break; | |
1145 | } | |
1146 | ||
1147 | return ret; | |
1148 | } | |
1149 | ||
1150 | /* | |
1151 | * This is the protection/DIF aware version of | |
1152 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
1153 | * two functions eventually, but for now, it's here | |
1154 | */ | |
1155 | static int | |
1156 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, | |
1157 | struct lpfc_scsi_buf *lpfc_cmd) | |
1158 | { | |
1159 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1160 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1161 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1162 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1163 | uint32_t num_bde = 0; | |
1164 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
1165 | int prot_group_type = 0; | |
1166 | int diflen, fcpdl; | |
1167 | unsigned blksize; | |
1168 | ||
1169 | /* | |
1170 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
1171 | * fcp_rsp regions to the first data bde entry | |
1172 | */ | |
1173 | bpl += 2; | |
1174 | if (scsi_sg_count(scsi_cmnd)) { | |
1175 | /* | |
1176 | * The driver stores the segment count returned from pci_map_sg | |
1177 | * because this a count of dma-mappings used to map the use_sg | |
1178 | * pages. They are not guaranteed to be the same for those | |
1179 | * architectures that implement an IOMMU. | |
1180 | */ | |
1181 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
1182 | scsi_sglist(scsi_cmnd), | |
1183 | scsi_sg_count(scsi_cmnd), datadir); | |
1184 | if (unlikely(!datasegcnt)) | |
1185 | return 1; | |
1186 | ||
1187 | lpfc_cmd->seg_cnt = datasegcnt; | |
1188 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
1189 | printk(KERN_ERR "%s: Too many sg segments from " | |
1190 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
1191 | __func__, phba->cfg_sg_seg_cnt, | |
1192 | lpfc_cmd->seg_cnt); | |
1193 | scsi_dma_unmap(scsi_cmnd); | |
1194 | return 1; | |
1195 | } | |
1196 | ||
1197 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
1198 | ||
1199 | switch (prot_group_type) { | |
1200 | case LPFC_PG_TYPE_NO_DIF: | |
1201 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, | |
1202 | datasegcnt); | |
1203 | /* we shoud have 2 or more entries in buffer list */ | |
1204 | if (num_bde < 2) | |
1205 | goto err; | |
1206 | break; | |
1207 | case LPFC_PG_TYPE_DIF_BUF:{ | |
1208 | /* | |
1209 | * This type indicates that protection buffers are | |
1210 | * passed to the driver, so that needs to be prepared | |
1211 | * for DMA | |
1212 | */ | |
1213 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
1214 | scsi_prot_sglist(scsi_cmnd), | |
1215 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
1216 | if (unlikely(!protsegcnt)) { | |
1217 | scsi_dma_unmap(scsi_cmnd); | |
1218 | return 1; | |
1219 | } | |
1220 | ||
1221 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
1222 | if (lpfc_cmd->prot_seg_cnt | |
1223 | > phba->cfg_prot_sg_seg_cnt) { | |
1224 | printk(KERN_ERR "%s: Too many prot sg segments " | |
1225 | "from dma_map_sg. Config %d," | |
1226 | "prot_seg_cnt %d\n", __func__, | |
1227 | phba->cfg_prot_sg_seg_cnt, | |
1228 | lpfc_cmd->prot_seg_cnt); | |
1229 | dma_unmap_sg(&phba->pcidev->dev, | |
1230 | scsi_prot_sglist(scsi_cmnd), | |
1231 | scsi_prot_sg_count(scsi_cmnd), | |
1232 | datadir); | |
1233 | scsi_dma_unmap(scsi_cmnd); | |
1234 | return 1; | |
1235 | } | |
1236 | ||
1237 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
1238 | datasegcnt, protsegcnt); | |
1239 | /* we shoud have 3 or more entries in buffer list */ | |
1240 | if (num_bde < 3) | |
1241 | goto err; | |
1242 | break; | |
1243 | } | |
1244 | case LPFC_PG_TYPE_INVALID: | |
1245 | default: | |
1246 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1247 | "9022 Unexpected protection group %i\n", | |
1248 | prot_group_type); | |
1249 | return 1; | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | /* | |
1254 | * Finish initializing those IOCB fields that are dependent on the | |
1255 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
1256 | * reinitialized since all iocb memory resources are used many times | |
1257 | * for transmit, receive, and continuation bpl's. | |
1258 | */ | |
1259 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
1260 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
1261 | iocb_cmd->ulpBdeCount = 1; | |
1262 | iocb_cmd->ulpLe = 1; | |
1263 | ||
1264 | fcpdl = scsi_bufflen(scsi_cmnd); | |
1265 | ||
1266 | if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) { | |
1267 | /* | |
1268 | * We are in DIF Type 1 mode | |
1269 | * Every data block has a 8 byte DIF (trailer) | |
1270 | * attached to it. Must ajust FCP data length | |
1271 | */ | |
1272 | blksize = lpfc_cmd_blksize(scsi_cmnd); | |
1273 | diflen = (fcpdl / blksize) * 8; | |
1274 | fcpdl += diflen; | |
1275 | } | |
1276 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
1277 | ||
1278 | /* | |
1279 | * Due to difference in data length between DIF/non-DIF paths, | |
1280 | * we need to set word 4 of IOCB here | |
1281 | */ | |
1282 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
1283 | ||
dea3101e | 1284 | return 0; |
e2a0a9d6 JS |
1285 | err: |
1286 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1287 | "9023 Could not setup all needed BDE's" | |
1288 | "prot_group_type=%d, num_bde=%d\n", | |
1289 | prot_group_type, num_bde); | |
1290 | return 1; | |
1291 | } | |
1292 | ||
1293 | /* | |
1294 | * This function checks for BlockGuard errors detected by | |
1295 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
1296 | * sense buffer will be set accordingly, paired with | |
1297 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
1298 | * detected corruption. | |
1299 | * | |
1300 | * Returns: | |
1301 | * 0 - No error found | |
1302 | * 1 - BlockGuard error found | |
1303 | * -1 - Internal error (bad profile, ...etc) | |
1304 | */ | |
1305 | static int | |
1306 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
1307 | struct lpfc_iocbq *pIocbOut) | |
1308 | { | |
1309 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
1310 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
1311 | int ret = 0; | |
1312 | uint32_t bghm = bgf->bghm; | |
1313 | uint32_t bgstat = bgf->bgstat; | |
1314 | uint64_t failing_sector = 0; | |
1315 | ||
1316 | printk(KERN_ERR "BG ERROR in cmd 0x%x lba 0x%llx blk cnt 0x%lx " | |
1317 | "bgstat=0x%x bghm=0x%x\n", | |
87b5c328 | 1318 | cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd), |
e2a0a9d6 JS |
1319 | cmd->request->nr_sectors, bgstat, bghm); |
1320 | ||
1321 | spin_lock(&_dump_buf_lock); | |
1322 | if (!_dump_buf_done) { | |
1323 | printk(KERN_ERR "Saving Data for %u blocks to debugfs\n", | |
1324 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
1325 | lpfc_debug_save_data(cmd); | |
1326 | ||
1327 | /* If we have a prot sgl, save the DIF buffer */ | |
1328 | if (lpfc_prot_group_type(phba, cmd) == | |
1329 | LPFC_PG_TYPE_DIF_BUF) { | |
1330 | printk(KERN_ERR "Saving DIF for %u blocks to debugfs\n", | |
1331 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
1332 | lpfc_debug_save_dif(cmd); | |
1333 | } | |
1334 | ||
1335 | _dump_buf_done = 1; | |
1336 | } | |
1337 | spin_unlock(&_dump_buf_lock); | |
1338 | ||
1339 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
1340 | cmd->result = ScsiResult(DID_ERROR, 0); | |
1341 | printk(KERN_ERR "Invalid BlockGuard profile. bgstat:0x%x\n", | |
1342 | bgstat); | |
1343 | ret = (-1); | |
1344 | goto out; | |
1345 | } | |
1346 | ||
1347 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
1348 | cmd->result = ScsiResult(DID_ERROR, 0); | |
1349 | printk(KERN_ERR "Invalid BlockGuard DIF Block. bgstat:0x%x\n", | |
1350 | bgstat); | |
1351 | ret = (-1); | |
1352 | goto out; | |
1353 | } | |
1354 | ||
1355 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
1356 | ret = 1; | |
1357 | ||
1358 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1359 | 0x10, 0x1); | |
1c9fbafc | 1360 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1361 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1362 | phba->bg_guard_err_cnt++; | |
1363 | printk(KERN_ERR "BLKGRD: guard_tag error\n"); | |
1364 | } | |
1365 | ||
1366 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
1367 | ret = 1; | |
1368 | ||
1369 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1370 | 0x10, 0x3); | |
1c9fbafc | 1371 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1372 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1373 | ||
1374 | phba->bg_reftag_err_cnt++; | |
1375 | printk(KERN_ERR "BLKGRD: ref_tag error\n"); | |
1376 | } | |
1377 | ||
1378 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
1379 | ret = 1; | |
1380 | ||
1381 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1382 | 0x10, 0x2); | |
1c9fbafc | 1383 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1384 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1385 | ||
1386 | phba->bg_apptag_err_cnt++; | |
1387 | printk(KERN_ERR "BLKGRD: app_tag error\n"); | |
1388 | } | |
1389 | ||
1390 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
1391 | /* | |
1392 | * setup sense data descriptor 0 per SPC-4 as an information | |
1393 | * field, and put the failing LBA in it | |
1394 | */ | |
1395 | cmd->sense_buffer[8] = 0; /* Information */ | |
1396 | cmd->sense_buffer[9] = 0xa; /* Add. length */ | |
2344b5b6 | 1397 | bghm /= cmd->device->sector_size; |
e2a0a9d6 JS |
1398 | |
1399 | failing_sector = scsi_get_lba(cmd); | |
1400 | failing_sector += bghm; | |
1401 | ||
1402 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[10]); | |
1403 | } | |
1404 | ||
1405 | if (!ret) { | |
1406 | /* No error was reported - problem in FW? */ | |
1407 | cmd->result = ScsiResult(DID_ERROR, 0); | |
1408 | printk(KERN_ERR "BLKGRD: no errors reported!\n"); | |
1409 | } | |
1410 | ||
1411 | out: | |
1412 | return ret; | |
dea3101e | 1413 | } |
1414 | ||
ea2151b4 JS |
1415 | /** |
1416 | * lpfc_send_scsi_error_event: Posts an event when there is SCSI error. | |
1417 | * @phba: Pointer to hba context object. | |
1418 | * @vport: Pointer to vport object. | |
1419 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
1420 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
1421 | * | |
1422 | * This function posts an event when there is a SCSI command reporting | |
1423 | * error from the scsi device. | |
1424 | **/ | |
1425 | static void | |
1426 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
1427 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
1428 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
1429 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
1430 | uint32_t resp_info = fcprsp->rspStatus2; | |
1431 | uint32_t scsi_status = fcprsp->rspStatus3; | |
1432 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
1433 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
1434 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
1435 | unsigned long flags; | |
1436 | ||
1437 | /* If there is queuefull or busy condition send a scsi event */ | |
1438 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
1439 | (cmnd->result == SAM_STAT_BUSY)) { | |
1440 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1441 | if (!fast_path_evt) | |
1442 | return; | |
1443 | fast_path_evt->un.scsi_evt.event_type = | |
1444 | FC_REG_SCSI_EVENT; | |
1445 | fast_path_evt->un.scsi_evt.subcategory = | |
1446 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
1447 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
1448 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
1449 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
1450 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1451 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
1452 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1453 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
1454 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
1455 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1456 | if (!fast_path_evt) | |
1457 | return; | |
1458 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
1459 | FC_REG_SCSI_EVENT; | |
1460 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
1461 | LPFC_EVENT_CHECK_COND; | |
1462 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
1463 | cmnd->device->lun; | |
1464 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
1465 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1466 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
1467 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1468 | fast_path_evt->un.check_cond_evt.sense_key = | |
1469 | cmnd->sense_buffer[2] & 0xf; | |
1470 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
1471 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
1472 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
1473 | fcpi_parm && | |
1474 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
1475 | ((scsi_status == SAM_STAT_GOOD) && | |
1476 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
1477 | /* | |
1478 | * If status is good or resid does not match with fcp_param and | |
1479 | * there is valid fcpi_parm, then there is a read_check error | |
1480 | */ | |
1481 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1482 | if (!fast_path_evt) | |
1483 | return; | |
1484 | fast_path_evt->un.read_check_error.header.event_type = | |
1485 | FC_REG_FABRIC_EVENT; | |
1486 | fast_path_evt->un.read_check_error.header.subcategory = | |
1487 | LPFC_EVENT_FCPRDCHKERR; | |
1488 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
1489 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1490 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
1491 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1492 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
1493 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
1494 | fast_path_evt->un.read_check_error.fcpiparam = | |
1495 | fcpi_parm; | |
1496 | } else | |
1497 | return; | |
1498 | ||
1499 | fast_path_evt->vport = vport; | |
1500 | spin_lock_irqsave(&phba->hbalock, flags); | |
1501 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
1502 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
1503 | lpfc_worker_wake_up(phba); | |
1504 | return; | |
1505 | } | |
9bad7671 JS |
1506 | |
1507 | /** | |
1508 | * lpfc_scsi_unprep_dma_buf: Routine to un-map DMA mapping of scatter gather. | |
1509 | * @phba: The Hba for which this call is being executed. | |
1510 | * @psb: The scsi buffer which is going to be un-mapped. | |
1511 | * | |
1512 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
1513 | * field of @lpfc_cmd. | |
1514 | **/ | |
bcf4dbfa JS |
1515 | static void |
1516 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
1517 | { | |
1518 | /* | |
1519 | * There are only two special cases to consider. (1) the scsi command | |
1520 | * requested scatter-gather usage or (2) the scsi command allocated | |
1521 | * a request buffer, but did not request use_sg. There is a third | |
1522 | * case, but it does not require resource deallocation. | |
1523 | */ | |
a0b4f78f FT |
1524 | if (psb->seg_cnt > 0) |
1525 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
1526 | if (psb->prot_seg_cnt > 0) |
1527 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
1528 | scsi_prot_sg_count(psb->pCmd), | |
1529 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
1530 | } |
1531 | ||
9bad7671 JS |
1532 | /** |
1533 | * lpfc_handler_fcp_err: FCP response handler. | |
1534 | * @vport: The virtual port for which this call is being executed. | |
1535 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
1536 | * @rsp_iocb: The response IOCB which contains FCP error. | |
1537 | * | |
1538 | * This routine is called to process response IOCB with status field | |
1539 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
1540 | * based upon SCSI and FCP error. | |
1541 | **/ | |
dea3101e | 1542 | static void |
2e0fef85 JS |
1543 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
1544 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 1545 | { |
1546 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
1547 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
1548 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 1549 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 1550 | uint32_t resp_info = fcprsp->rspStatus2; |
1551 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 1552 | uint32_t *lp; |
dea3101e | 1553 | uint32_t host_status = DID_OK; |
1554 | uint32_t rsplen = 0; | |
c7743956 | 1555 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 1556 | |
ea2151b4 | 1557 | |
dea3101e | 1558 | /* |
1559 | * If this is a task management command, there is no | |
1560 | * scsi packet associated with this lpfc_cmd. The driver | |
1561 | * consumes it. | |
1562 | */ | |
1563 | if (fcpcmd->fcpCntl2) { | |
1564 | scsi_status = 0; | |
1565 | goto out; | |
1566 | } | |
1567 | ||
c7743956 JS |
1568 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
1569 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
1570 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
1571 | snslen = SCSI_SENSE_BUFFERSIZE; | |
1572 | ||
1573 | if (resp_info & RSP_LEN_VALID) | |
1574 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
1575 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
1576 | } | |
1577 | lp = (uint32_t *)cmnd->sense_buffer; | |
1578 | ||
1579 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
1580 | logit = LOG_FCP; | |
1581 | ||
e8b62011 | 1582 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 1583 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
1584 | "Data: x%x x%x x%x x%x x%x\n", |
1585 | cmnd->cmnd[0], scsi_status, | |
1586 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
1587 | be32_to_cpu(fcprsp->rspResId), | |
1588 | be32_to_cpu(fcprsp->rspSnsLen), | |
1589 | be32_to_cpu(fcprsp->rspRspLen), | |
1590 | fcprsp->rspInfo3); | |
dea3101e | 1591 | |
1592 | if (resp_info & RSP_LEN_VALID) { | |
1593 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
1594 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
1595 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
1596 | host_status = DID_ERROR; | |
1597 | goto out; | |
1598 | } | |
1599 | } | |
1600 | ||
a0b4f78f | 1601 | scsi_set_resid(cmnd, 0); |
dea3101e | 1602 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 1603 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 1604 | |
e8b62011 | 1605 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 1606 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
1607 | "residual %d Data: x%x x%x x%x\n", |
1608 | be32_to_cpu(fcpcmd->fcpDl), | |
1609 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
1610 | cmnd->underflow); | |
dea3101e | 1611 | |
7054a606 JS |
1612 | /* |
1613 | * If there is an under run check if under run reported by | |
1614 | * storage array is same as the under run reported by HBA. | |
1615 | * If this is not same, there is a dropped frame. | |
1616 | */ | |
1617 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
1618 | fcpi_parm && | |
a0b4f78f | 1619 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
1620 | lpfc_printf_vlog(vport, KERN_WARNING, |
1621 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 1622 | "9026 FCP Read Check Error " |
e8b62011 JS |
1623 | "and Underrun Data: x%x x%x x%x x%x\n", |
1624 | be32_to_cpu(fcpcmd->fcpDl), | |
1625 | scsi_get_resid(cmnd), fcpi_parm, | |
1626 | cmnd->cmnd[0]); | |
a0b4f78f | 1627 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
1628 | host_status = DID_ERROR; |
1629 | } | |
dea3101e | 1630 | /* |
1631 | * The cmnd->underflow is the minimum number of bytes that must | |
1632 | * be transfered for this command. Provided a sense condition | |
1633 | * is not present, make sure the actual amount transferred is at | |
1634 | * least the underflow value or fail. | |
1635 | */ | |
1636 | if (!(resp_info & SNS_LEN_VALID) && | |
1637 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
1638 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
1639 | < cmnd->underflow)) { | |
e8b62011 | 1640 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 1641 | "9027 FCP command x%x residual " |
e8b62011 JS |
1642 | "underrun converted to error " |
1643 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 1644 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 1645 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e | 1646 | host_status = DID_ERROR; |
1647 | } | |
1648 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 1649 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 1650 | "9028 FCP command x%x residual overrun error. " |
e8b62011 JS |
1651 | "Data: x%x x%x \n", cmnd->cmnd[0], |
1652 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); | |
dea3101e | 1653 | host_status = DID_ERROR; |
1654 | ||
1655 | /* | |
1656 | * Check SLI validation that all the transfer was actually done | |
1657 | * (fcpi_parm should be zero). Apply check only to reads. | |
1658 | */ | |
1659 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
1660 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 | 1661 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
e2a0a9d6 | 1662 | "9029 FCP Read Check Error Data: " |
e8b62011 JS |
1663 | "x%x x%x x%x x%x\n", |
1664 | be32_to_cpu(fcpcmd->fcpDl), | |
1665 | be32_to_cpu(fcprsp->rspResId), | |
1666 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 1667 | host_status = DID_ERROR; |
a0b4f78f | 1668 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 1669 | } |
1670 | ||
1671 | out: | |
1672 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 1673 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e | 1674 | } |
1675 | ||
9bad7671 JS |
1676 | /** |
1677 | * lpfc_scsi_cmd_iocb_cmpl: Scsi cmnd IOCB completion routine. | |
1678 | * @phba: The Hba for which this call is being executed. | |
1679 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
1680 | * @pIocbOut: The response IOCBQ for the scsi cmnd . | |
1681 | * | |
1682 | * This routine assigns scsi command result by looking into response IOCB | |
1683 | * status field appropriately. This routine handles QUEUE FULL condition as | |
1684 | * well by ramping down device queue depth. | |
1685 | **/ | |
dea3101e | 1686 | static void |
1687 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
1688 | struct lpfc_iocbq *pIocbOut) | |
1689 | { | |
1690 | struct lpfc_scsi_buf *lpfc_cmd = | |
1691 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 1692 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 1693 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
1694 | struct lpfc_nodelist *pnode = rdata->pnode; | |
1695 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 JSEC |
1696 | int result; |
1697 | struct scsi_device *sdev, *tmp_sdev; | |
1698 | int depth = 0; | |
fa61a54e | 1699 | unsigned long flags; |
ea2151b4 | 1700 | struct lpfc_fast_path_event *fast_path_evt; |
dea3101e | 1701 | |
1702 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
1703 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
109f6ed0 JS |
1704 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
1705 | atomic_dec(&pnode->cmd_pending); | |
dea3101e | 1706 | |
1707 | if (lpfc_cmd->status) { | |
1708 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
1709 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
1710 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
1711 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
1712 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
1713 | ||
e8b62011 | 1714 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 1715 | "9030 FCP cmd x%x failed <%d/%d> " |
e8b62011 JS |
1716 | "status: x%x result: x%x Data: x%x x%x\n", |
1717 | cmd->cmnd[0], | |
1718 | cmd->device ? cmd->device->id : 0xffff, | |
1719 | cmd->device ? cmd->device->lun : 0xffff, | |
1720 | lpfc_cmd->status, lpfc_cmd->result, | |
1721 | pIocbOut->iocb.ulpContext, | |
1722 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 1723 | |
1724 | switch (lpfc_cmd->status) { | |
1725 | case IOSTAT_FCP_RSP_ERROR: | |
1726 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 1727 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 1728 | break; |
1729 | case IOSTAT_NPORT_BSY: | |
1730 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 1731 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
1732 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
1733 | if (!fast_path_evt) | |
1734 | break; | |
1735 | fast_path_evt->un.fabric_evt.event_type = | |
1736 | FC_REG_FABRIC_EVENT; | |
1737 | fast_path_evt->un.fabric_evt.subcategory = | |
1738 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
1739 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
1740 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
1741 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
1742 | &pnode->nlp_portname, | |
1743 | sizeof(struct lpfc_name)); | |
1744 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
1745 | &pnode->nlp_nodename, | |
1746 | sizeof(struct lpfc_name)); | |
1747 | } | |
1748 | fast_path_evt->vport = vport; | |
1749 | fast_path_evt->work_evt.evt = | |
1750 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
1751 | spin_lock_irqsave(&phba->hbalock, flags); | |
1752 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
1753 | &phba->work_list); | |
1754 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
1755 | lpfc_worker_wake_up(phba); | |
dea3101e | 1756 | break; |
92d7f7b0 | 1757 | case IOSTAT_LOCAL_REJECT: |
d7c255b2 | 1758 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 1759 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
d7c255b2 | 1760 | lpfc_cmd->result == IOERR_ABORT_REQUESTED) { |
92d7f7b0 | 1761 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 1762 | break; |
e2a0a9d6 JS |
1763 | } |
1764 | ||
1765 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || | |
1766 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
1767 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
1768 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
1769 | /* | |
1770 | * This is a response for a BG enabled | |
1771 | * cmd. Parse BG error | |
1772 | */ | |
1773 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
1774 | pIocbOut); | |
1775 | break; | |
1776 | } else { | |
1777 | lpfc_printf_vlog(vport, KERN_WARNING, | |
1778 | LOG_BG, | |
1779 | "9031 non-zero BGSTAT " | |
1780 | "on unprotected cmd"); | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | /* else: fall through */ | |
dea3101e | 1785 | default: |
1786 | cmd->result = ScsiResult(DID_ERROR, 0); | |
1787 | break; | |
1788 | } | |
1789 | ||
58da1ffb | 1790 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 1791 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
1792 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
1793 | SAM_STAT_BUSY); | |
dea3101e | 1794 | } else { |
1795 | cmd->result = ScsiResult(DID_OK, 0); | |
1796 | } | |
1797 | ||
1798 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
1799 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
1800 | ||
e8b62011 JS |
1801 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1802 | "0710 Iodone <%d/%d> cmd %p, error " | |
1803 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
1804 | cmd->device->id, cmd->device->lun, cmd, | |
1805 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
1806 | scsi_get_resid(cmd)); | |
dea3101e | 1807 | } |
1808 | ||
ea2151b4 | 1809 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 JSEC |
1810 | result = cmd->result; |
1811 | sdev = cmd->device; | |
977b5a0a JS |
1812 | if (vport->cfg_max_scsicmpl_time && |
1813 | time_after(jiffies, lpfc_cmd->start_time + | |
1814 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
1815 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
109f6ed0 JS |
1816 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
1817 | if (pnode->cmd_qdepth > | |
1818 | atomic_read(&pnode->cmd_pending) && | |
1819 | (atomic_read(&pnode->cmd_pending) > | |
1820 | LPFC_MIN_TGT_QDEPTH) && | |
1821 | ((cmd->cmnd[0] == READ_10) || | |
1822 | (cmd->cmnd[0] == WRITE_10))) | |
1823 | pnode->cmd_qdepth = | |
1824 | atomic_read(&pnode->cmd_pending); | |
1825 | ||
1826 | pnode->last_change_time = jiffies; | |
1827 | } | |
977b5a0a | 1828 | spin_unlock_irqrestore(sdev->host->host_lock, flags); |
109f6ed0 JS |
1829 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
1830 | if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) && | |
977b5a0a | 1831 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 JS |
1832 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
1833 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
1834 | pnode->cmd_qdepth += pnode->cmd_qdepth * | |
1835 | LPFC_TGTQ_RAMPUP_PCENT / 100; | |
1836 | if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH) | |
1837 | pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH; | |
1838 | pnode->last_change_time = jiffies; | |
1839 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
1840 | } | |
977b5a0a JS |
1841 | } |
1842 | ||
1dcb58e5 | 1843 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
1844 | cmd->scsi_done(cmd); |
1845 | ||
b808608b | 1846 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
1847 | /* |
1848 | * If there is a thread waiting for command completion | |
1849 | * wake up the thread. | |
1850 | */ | |
1851 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 1852 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
1853 | if (lpfc_cmd->waitq) |
1854 | wake_up(lpfc_cmd->waitq); | |
1855 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
b808608b JW |
1856 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
1857 | return; | |
1858 | } | |
1859 | ||
92d7f7b0 JS |
1860 | |
1861 | if (!result) | |
3de2a653 | 1862 | lpfc_rampup_queue_depth(vport, sdev); |
92d7f7b0 | 1863 | |
58da1ffb | 1864 | if (!result && pnode && NLP_CHK_NODE_ACT(pnode) && |
445cf4f4 JSEC |
1865 | ((jiffies - pnode->last_ramp_up_time) > |
1866 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
1867 | ((jiffies - pnode->last_q_full_time) > | |
1868 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
3de2a653 | 1869 | (vport->cfg_lun_queue_depth > sdev->queue_depth)) { |
445cf4f4 | 1870 | shost_for_each_device(tmp_sdev, sdev->host) { |
3de2a653 | 1871 | if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){ |
445cf4f4 JSEC |
1872 | if (tmp_sdev->id != sdev->id) |
1873 | continue; | |
1874 | if (tmp_sdev->ordered_tags) | |
1875 | scsi_adjust_queue_depth(tmp_sdev, | |
1876 | MSG_ORDERED_TAG, | |
1877 | tmp_sdev->queue_depth+1); | |
1878 | else | |
1879 | scsi_adjust_queue_depth(tmp_sdev, | |
1880 | MSG_SIMPLE_TAG, | |
1881 | tmp_sdev->queue_depth+1); | |
1882 | ||
1883 | pnode->last_ramp_up_time = jiffies; | |
1884 | } | |
1885 | } | |
ea2151b4 JS |
1886 | lpfc_send_sdev_queuedepth_change_event(phba, vport, pnode, |
1887 | 0xFFFFFFFF, | |
1888 | sdev->queue_depth - 1, sdev->queue_depth); | |
445cf4f4 JSEC |
1889 | } |
1890 | ||
1891 | /* | |
1892 | * Check for queue full. If the lun is reporting queue full, then | |
1893 | * back off the lun queue depth to prevent target overloads. | |
1894 | */ | |
58da1ffb JS |
1895 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
1896 | NLP_CHK_NODE_ACT(pnode)) { | |
445cf4f4 JSEC |
1897 | pnode->last_q_full_time = jiffies; |
1898 | ||
1899 | shost_for_each_device(tmp_sdev, sdev->host) { | |
1900 | if (tmp_sdev->id != sdev->id) | |
1901 | continue; | |
1902 | depth = scsi_track_queue_full(tmp_sdev, | |
1903 | tmp_sdev->queue_depth - 1); | |
1904 | } | |
1905 | /* | |
2e0fef85 | 1906 | * The queue depth cannot be lowered any more. |
445cf4f4 JSEC |
1907 | * Modify the returned error code to store |
1908 | * the final depth value set by | |
1909 | * scsi_track_queue_full. | |
1910 | */ | |
1911 | if (depth == -1) | |
1912 | depth = sdev->host->cmd_per_lun; | |
1913 | ||
1914 | if (depth) { | |
e8b62011 JS |
1915 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1916 | "0711 detected queue full - lun queue " | |
1917 | "depth adjusted to %d.\n", depth); | |
ea2151b4 JS |
1918 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
1919 | pnode, 0xFFFFFFFF, | |
1920 | depth+1, depth); | |
445cf4f4 JSEC |
1921 | } |
1922 | } | |
1923 | ||
fa61a54e JS |
1924 | /* |
1925 | * If there is a thread waiting for command completion | |
1926 | * wake up the thread. | |
1927 | */ | |
1928 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 1929 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
1930 | if (lpfc_cmd->waitq) |
1931 | wake_up(lpfc_cmd->waitq); | |
1932 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
1933 | ||
0bd4ca25 | 1934 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 1935 | } |
1936 | ||
34b02dcd JS |
1937 | /** |
1938 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB. | |
1939 | * @data: A pointer to the immediate command data portion of the IOCB. | |
1940 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
1941 | * | |
1942 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
1943 | * byte swapping the data to big endian format for transmission on the wire. | |
1944 | **/ | |
1945 | static void | |
1946 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
1947 | { | |
1948 | int i, j; | |
1949 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
1950 | i += sizeof(uint32_t), j++) { | |
1951 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
1952 | } | |
1953 | } | |
1954 | ||
9bad7671 JS |
1955 | /** |
1956 | * lpfc_scsi_prep_cmnd: Routine to convert scsi cmnd to FCP information unit. | |
1957 | * @vport: The virtual port for which this call is being executed. | |
1958 | * @lpfc_cmd: The scsi command which needs to send. | |
1959 | * @pnode: Pointer to lpfc_nodelist. | |
1960 | * | |
1961 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
1962 | * to transfer. | |
1963 | **/ | |
dea3101e | 1964 | static void |
2e0fef85 JS |
1965 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
1966 | struct lpfc_nodelist *pnode) | |
dea3101e | 1967 | { |
2e0fef85 | 1968 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 1969 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
1970 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1971 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1972 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
1973 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 1974 | char tag[2]; |
dea3101e | 1975 | |
58da1ffb JS |
1976 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
1977 | return; | |
1978 | ||
dea3101e | 1979 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
1980 | /* clear task management bits */ |
1981 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 1982 | |
91886523 JSEC |
1983 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
1984 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 1985 | |
1986 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
1987 | ||
7e2b19fb JS |
1988 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
1989 | switch (tag[0]) { | |
dea3101e | 1990 | case HEAD_OF_QUEUE_TAG: |
1991 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
1992 | break; | |
1993 | case ORDERED_QUEUE_TAG: | |
1994 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
1995 | break; | |
1996 | default: | |
1997 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
1998 | break; | |
1999 | } | |
2000 | } else | |
2001 | fcp_cmnd->fcpCntl1 = 0; | |
2002 | ||
2003 | /* | |
2004 | * There are three possibilities here - use scatter-gather segment, use | |
2005 | * the single mapping, or neither. Start the lpfc command prep by | |
2006 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2007 | * data bde entry. | |
2008 | */ | |
a0b4f78f | 2009 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 2010 | if (datadir == DMA_TO_DEVICE) { |
2011 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
2012 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2013 | iocb_cmd->ulpPU = 0; | |
2014 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
2015 | phba->fc4OutputRequests++; | |
2016 | } else { | |
2017 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
2018 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 2019 | fcp_cmnd->fcpCntl3 = READ_DATA; |
2020 | phba->fc4InputRequests++; | |
2021 | } | |
2022 | } else { | |
2023 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
2024 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2025 | iocb_cmd->ulpPU = 0; | |
2026 | fcp_cmnd->fcpCntl3 = 0; | |
2027 | phba->fc4ControlRequests++; | |
2028 | } | |
e2a0a9d6 JS |
2029 | if (phba->sli_rev == 3 && |
2030 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2031 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 2032 | /* |
2033 | * Finish initializing those IOCB fields that are independent | |
2034 | * of the scsi_cmnd request_buffer | |
2035 | */ | |
2036 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
2037 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
2038 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
2039 | else |
2040 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e | 2041 | |
2042 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
2043 | piocbq->context1 = lpfc_cmd; | |
2044 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
2045 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 2046 | piocbq->vport = vport; |
dea3101e | 2047 | } |
2048 | ||
9bad7671 JS |
2049 | /** |
2050 | * lpfc_scsi_prep_task_mgmt_cmnd: Convert scsi TM cmnd to FCP information unit. | |
2051 | * @vport: The virtual port for which this call is being executed. | |
2052 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2053 | * @lun: Logical unit number. | |
2054 | * @task_mgmt_cmd: SCSI task management command. | |
2055 | * | |
2056 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd. | |
2057 | * | |
2058 | * Return codes: | |
2059 | * 0 - Error | |
2060 | * 1 - Success | |
2061 | **/ | |
dea3101e | 2062 | static int |
2e0fef85 | 2063 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 2064 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 2065 | unsigned int lun, |
dea3101e | 2066 | uint8_t task_mgmt_cmd) |
2067 | { | |
dea3101e | 2068 | struct lpfc_iocbq *piocbq; |
2069 | IOCB_t *piocb; | |
2070 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 2071 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 2072 | struct lpfc_nodelist *ndlp = rdata->pnode; |
2073 | ||
58da1ffb JS |
2074 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
2075 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 2076 | return 0; |
dea3101e | 2077 | |
dea3101e | 2078 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
2079 | piocbq->vport = vport; |
2080 | ||
dea3101e | 2081 | piocb = &piocbq->iocb; |
2082 | ||
2083 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
2084 | /* Clear out any old data in the FCP command area */ |
2085 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
2086 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 2087 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
2088 | if (vport->phba->sli_rev == 3 && |
2089 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2090 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 2091 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 2092 | piocb->ulpContext = ndlp->nlp_rpi; |
2093 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
2094 | piocb->ulpFCP2Rcvy = 1; | |
2095 | } | |
2096 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
2097 | ||
2098 | /* ulpTimeout is only one byte */ | |
2099 | if (lpfc_cmd->timeout > 0xff) { | |
2100 | /* | |
2101 | * Do not timeout the command at the firmware level. | |
2102 | * The driver will provide the timeout mechanism. | |
2103 | */ | |
2104 | piocb->ulpTimeout = 0; | |
2105 | } else { | |
2106 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
2107 | } | |
2108 | ||
2e0fef85 | 2109 | return 1; |
dea3101e | 2110 | } |
2111 | ||
9bad7671 JS |
2112 | /** |
2113 | * lpc_taskmgmt_def_cmpl: IOCB completion routine for task management command. | |
2114 | * @phba: The Hba for which this call is being executed. | |
2115 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
2116 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
2117 | * | |
2118 | * This routine is IOCB completion routine for device reset and target reset | |
2119 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
2120 | **/ | |
7054a606 JS |
2121 | static void |
2122 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
2123 | struct lpfc_iocbq *cmdiocbq, | |
2124 | struct lpfc_iocbq *rspiocbq) | |
2125 | { | |
2126 | struct lpfc_scsi_buf *lpfc_cmd = | |
2127 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
2128 | if (lpfc_cmd) | |
2129 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2130 | return; | |
2131 | } | |
2132 | ||
9bad7671 JS |
2133 | /** |
2134 | * lpfc_scsi_tgt_reset: Target reset handler. | |
2135 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure | |
2136 | * @vport: The virtual port for which this call is being executed. | |
2137 | * @tgt_id: Target ID. | |
2138 | * @lun: Lun number. | |
2139 | * @rdata: Pointer to lpfc_rport_data. | |
2140 | * | |
2141 | * This routine issues a TARGET RESET iocb to reset a target with @tgt_id ID. | |
2142 | * | |
2143 | * Return Code: | |
2144 | * 0x2003 - Error | |
2145 | * 0x2002 - Success. | |
2146 | **/ | |
dea3101e | 2147 | static int |
2e0fef85 | 2148 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, |
420b630d JS |
2149 | unsigned tgt_id, unsigned int lun, |
2150 | struct lpfc_rport_data *rdata) | |
dea3101e | 2151 | { |
2e0fef85 | 2152 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 2153 | struct lpfc_iocbq *iocbq; |
0bd4ca25 | 2154 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 2155 | int ret; |
915caaaf | 2156 | int status; |
dea3101e | 2157 | |
58da1ffb | 2158 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
f5603511 JS |
2159 | return FAILED; |
2160 | ||
0b18ac42 | 2161 | lpfc_cmd->rdata = rdata; |
915caaaf | 2162 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, |
420b630d | 2163 | FCP_TARGET_RESET); |
915caaaf | 2164 | if (!status) |
dea3101e | 2165 | return FAILED; |
2166 | ||
dea3101e | 2167 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 JSEC |
2168 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
2169 | ||
dea3101e | 2170 | if (!iocbqrsp) |
2171 | return FAILED; | |
dea3101e | 2172 | |
0b18ac42 | 2173 | /* Issue Target Reset to TGT <num> */ |
e8b62011 JS |
2174 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2175 | "0702 Issue Target Reset to TGT %d Data: x%x x%x\n", | |
2176 | tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
915caaaf | 2177 | status = lpfc_sli_issue_iocb_wait(phba, |
68876920 JSEC |
2178 | &phba->sli.ring[phba->sli.fcp_ring], |
2179 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
915caaaf JS |
2180 | if (status != IOCB_SUCCESS) { |
2181 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 2182 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
2183 | ret = TIMEOUT_ERROR; |
2184 | } else | |
2185 | ret = FAILED; | |
dea3101e | 2186 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
dea3101e | 2187 | } else { |
2188 | ret = SUCCESS; | |
2189 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
2190 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
2191 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
2192 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
2193 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
2194 | } | |
2195 | ||
604a3e30 | 2196 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e | 2197 | return ret; |
2198 | } | |
2199 | ||
9bad7671 JS |
2200 | /** |
2201 | * lpfc_info: Info entry point of scsi_host_template data structure. | |
2202 | * @host: The scsi host for which this call is being executed. | |
2203 | * | |
2204 | * This routine provides module information about hba. | |
2205 | * | |
2206 | * Reutrn code: | |
2207 | * Pointer to char - Success. | |
2208 | **/ | |
dea3101e | 2209 | const char * |
2210 | lpfc_info(struct Scsi_Host *host) | |
2211 | { | |
2e0fef85 JS |
2212 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
2213 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2214 | int len; |
2215 | static char lpfcinfobuf[384]; | |
2216 | ||
2217 | memset(lpfcinfobuf,0,384); | |
2218 | if (phba && phba->pcidev){ | |
2219 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
2220 | len = strlen(lpfcinfobuf); | |
2221 | snprintf(lpfcinfobuf + len, | |
2222 | 384-len, | |
2223 | " on PCI bus %02x device %02x irq %d", | |
2224 | phba->pcidev->bus->number, | |
2225 | phba->pcidev->devfn, | |
2226 | phba->pcidev->irq); | |
2227 | len = strlen(lpfcinfobuf); | |
2228 | if (phba->Port[0]) { | |
2229 | snprintf(lpfcinfobuf + len, | |
2230 | 384-len, | |
2231 | " port %s", | |
2232 | phba->Port); | |
2233 | } | |
2234 | } | |
2235 | return lpfcinfobuf; | |
2236 | } | |
2237 | ||
9bad7671 JS |
2238 | /** |
2239 | * lpfc_poll_rearm_time: Routine to modify fcp_poll timer of hba. | |
2240 | * @phba: The Hba for which this call is being executed. | |
2241 | * | |
2242 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
2243 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
2244 | **/ | |
875fbdfe JSEC |
2245 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
2246 | { | |
2247 | unsigned long poll_tmo_expires = | |
2248 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
2249 | ||
2250 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
2251 | mod_timer(&phba->fcp_poll_timer, | |
2252 | poll_tmo_expires); | |
2253 | } | |
2254 | ||
9bad7671 JS |
2255 | /** |
2256 | * lpfc_poll_start_timer: Routine to start fcp_poll_timer of HBA. | |
2257 | * @phba: The Hba for which this call is being executed. | |
2258 | * | |
2259 | * This routine starts the fcp_poll_timer of @phba. | |
2260 | **/ | |
875fbdfe JSEC |
2261 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
2262 | { | |
2263 | lpfc_poll_rearm_timer(phba); | |
2264 | } | |
2265 | ||
9bad7671 JS |
2266 | /** |
2267 | * lpfc_poll_timeout: Restart polling timer. | |
2268 | * @ptr: Map to lpfc_hba data structure pointer. | |
2269 | * | |
2270 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
2271 | * and FCP Ring interrupt is disable. | |
2272 | **/ | |
2273 | ||
875fbdfe JSEC |
2274 | void lpfc_poll_timeout(unsigned long ptr) |
2275 | { | |
2e0fef85 | 2276 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
2277 | |
2278 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
2279 | lpfc_sli_poll_fcp_ring (phba); | |
2280 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
2281 | lpfc_poll_rearm_timer(phba); | |
2282 | } | |
875fbdfe JSEC |
2283 | } |
2284 | ||
9bad7671 JS |
2285 | /** |
2286 | * lpfc_queuecommand: Queuecommand entry point of Scsi Host Templater data | |
2287 | * structure. | |
2288 | * @cmnd: Pointer to scsi_cmnd data structure. | |
2289 | * @done: Pointer to done routine. | |
2290 | * | |
2291 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
2292 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
2293 | * The @done callback is invoked after driver finished processing the command. | |
2294 | * | |
2295 | * Return value : | |
2296 | * 0 - Success | |
2297 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
2298 | **/ | |
dea3101e | 2299 | static int |
2300 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
2301 | { | |
2e0fef85 JS |
2302 | struct Scsi_Host *shost = cmnd->device->host; |
2303 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2304 | struct lpfc_hba *phba = vport->phba; | |
2305 | struct lpfc_sli *psli = &phba->sli; | |
dea3101e | 2306 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
2307 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 2308 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 2309 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 2310 | int err; |
dea3101e | 2311 | |
19a7b4ae JSEC |
2312 | err = fc_remote_port_chkready(rport); |
2313 | if (err) { | |
2314 | cmnd->result = err; | |
dea3101e | 2315 | goto out_fail_command; |
2316 | } | |
2317 | ||
e2a0a9d6 JS |
2318 | if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
2319 | scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { | |
2320 | ||
2321 | printk(KERN_ERR "BLKGRD ERROR: rcvd protected cmd:%02x op:%02x " | |
2322 | "str=%s without registering for BlockGuard - " | |
2323 | "Rejecting command\n", | |
2324 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2325 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2326 | goto out_fail_command; | |
2327 | } | |
2328 | ||
dea3101e | 2329 | /* |
19a7b4ae JSEC |
2330 | * Catch race where our node has transitioned, but the |
2331 | * transport is still transitioning. | |
dea3101e | 2332 | */ |
b522d7d4 JS |
2333 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
2334 | cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); | |
2335 | goto out_fail_command; | |
2336 | } | |
109f6ed0 JS |
2337 | if (vport->cfg_max_scsicmpl_time && |
2338 | (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)) | |
977b5a0a | 2339 | goto out_host_busy; |
a93ce024 | 2340 | |
ed957684 | 2341 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 2342 | if (lpfc_cmd == NULL) { |
eaf15d5b | 2343 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 2344 | |
e8b62011 JS |
2345 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2346 | "0707 driver's buffer pool is empty, " | |
2347 | "IO busied\n"); | |
dea3101e | 2348 | goto out_host_busy; |
2349 | } | |
2350 | ||
2351 | /* | |
2352 | * Store the midlayer's command structure for the completion phase | |
2353 | * and complete the command initialization. | |
2354 | */ | |
2355 | lpfc_cmd->pCmd = cmnd; | |
2356 | lpfc_cmd->rdata = rdata; | |
2357 | lpfc_cmd->timeout = 0; | |
977b5a0a | 2358 | lpfc_cmd->start_time = jiffies; |
dea3101e | 2359 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
2360 | cmnd->scsi_done = done; | |
2361 | ||
e2a0a9d6 JS |
2362 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
2363 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2364 | "9033 BLKGRD: rcvd protected cmd:%02x op:%02x " | |
2365 | "str=%s\n", | |
2366 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2367 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2368 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2369 | "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x " | |
2370 | "%02x %02x %02x %02x %02x \n", | |
2371 | cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], | |
2372 | cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], | |
2373 | cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], | |
2374 | cmnd->cmnd[9]); | |
2375 | if (cmnd->cmnd[0] == READ_10) | |
2376 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2377 | "9035 BLKGRD: READ @ sector %llu, " | |
2378 | "count %lu\n", | |
87b5c328 | 2379 | (unsigned long long)scsi_get_lba(cmnd), |
e2a0a9d6 JS |
2380 | cmnd->request->nr_sectors); |
2381 | else if (cmnd->cmnd[0] == WRITE_10) | |
2382 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2383 | "9036 BLKGRD: WRITE @ sector %llu, " | |
2384 | "count %lu cmd=%p\n", | |
87b5c328 | 2385 | (unsigned long long)scsi_get_lba(cmnd), |
e2a0a9d6 JS |
2386 | cmnd->request->nr_sectors, |
2387 | cmnd); | |
2388 | ||
2389 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2390 | } else { | |
2391 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2392 | "9038 BLKGRD: rcvd unprotected cmd:%02x op:%02x" | |
2393 | " str=%s\n", | |
2394 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2395 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2396 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2397 | "9039 BLKGRD: CDB: %02x %02x %02x %02x %02x " | |
2398 | "%02x %02x %02x %02x %02x \n", | |
2399 | cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], | |
2400 | cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], | |
2401 | cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], | |
2402 | cmnd->cmnd[9]); | |
2403 | if (cmnd->cmnd[0] == READ_10) | |
2404 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2405 | "9040 dbg: READ @ sector %llu, " | |
87b5c328 JS |
2406 | "count %lu\n", |
2407 | (unsigned long long)scsi_get_lba(cmnd), | |
e2a0a9d6 JS |
2408 | cmnd->request->nr_sectors); |
2409 | else if (cmnd->cmnd[0] == WRITE_10) | |
2410 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2411 | "9041 dbg: WRITE @ sector %llu, " | |
2412 | "count %lu cmd=%p\n", | |
87b5c328 | 2413 | (unsigned long long)scsi_get_lba(cmnd), |
e2a0a9d6 JS |
2414 | cmnd->request->nr_sectors, cmnd); |
2415 | else | |
2416 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2417 | "9042 dbg: parser not implemented\n"); | |
2418 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2419 | } | |
2420 | ||
dea3101e | 2421 | if (err) |
2422 | goto out_host_busy_free_buf; | |
2423 | ||
2e0fef85 | 2424 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 2425 | |
977b5a0a | 2426 | atomic_inc(&ndlp->cmd_pending); |
dea3101e | 2427 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], |
92d7f7b0 | 2428 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
2429 | if (err) { |
2430 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 2431 | goto out_host_busy_free_buf; |
eaf15d5b | 2432 | } |
875fbdfe JSEC |
2433 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
2434 | lpfc_sli_poll_fcp_ring(phba); | |
2435 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
2436 | lpfc_poll_rearm_timer(phba); | |
2437 | } | |
2438 | ||
dea3101e | 2439 | return 0; |
2440 | ||
2441 | out_host_busy_free_buf: | |
bcf4dbfa | 2442 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 2443 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 2444 | out_host_busy: |
2445 | return SCSI_MLQUEUE_HOST_BUSY; | |
2446 | ||
2447 | out_fail_command: | |
2448 | done(cmnd); | |
2449 | return 0; | |
2450 | } | |
2451 | ||
9bad7671 JS |
2452 | /** |
2453 | * lpfc_block_error_handler: Routine to block error handler. | |
2454 | * @cmnd: Pointer to scsi_cmnd data structure. | |
2455 | * | |
2456 | * This routine blocks execution till fc_rport state is not FC_PORSTAT_BLCOEKD. | |
2457 | **/ | |
a90f5684 JS |
2458 | static void |
2459 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
2460 | { | |
2461 | struct Scsi_Host *shost = cmnd->device->host; | |
2462 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
2463 | ||
2464 | spin_lock_irq(shost->host_lock); | |
2465 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
2466 | spin_unlock_irq(shost->host_lock); | |
2467 | msleep(1000); | |
2468 | spin_lock_irq(shost->host_lock); | |
2469 | } | |
2470 | spin_unlock_irq(shost->host_lock); | |
2471 | return; | |
2472 | } | |
63c59c3b | 2473 | |
9bad7671 JS |
2474 | /** |
2475 | * lpfc_abort_handler: Eh_abort_handler entry point of Scsi Host Template data | |
2476 | *structure. | |
2477 | * @cmnd: Pointer to scsi_cmnd data structure. | |
2478 | * | |
2479 | * This routine aborts @cmnd pending in base driver. | |
2480 | * | |
2481 | * Return code : | |
2482 | * 0x2003 - Error | |
2483 | * 0x2002 - Success | |
2484 | **/ | |
dea3101e | 2485 | static int |
63c59c3b | 2486 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 2487 | { |
2e0fef85 JS |
2488 | struct Scsi_Host *shost = cmnd->device->host; |
2489 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2490 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2491 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
2492 | struct lpfc_iocbq *iocb; |
2493 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 2494 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 2495 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 2496 | int ret = SUCCESS; |
fa61a54e | 2497 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 2498 | |
a90f5684 | 2499 | lpfc_block_error_handler(cmnd); |
0bd4ca25 JSEC |
2500 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
2501 | BUG_ON(!lpfc_cmd); | |
dea3101e | 2502 | |
0bd4ca25 JSEC |
2503 | /* |
2504 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
2505 | * points to a different SCSI command, then the driver has | |
2506 | * already completed this command, but the midlayer did not | |
2507 | * see the completion before the eh fired. Just return | |
2508 | * SUCCESS. | |
2509 | */ | |
2510 | iocb = &lpfc_cmd->cur_iocbq; | |
2511 | if (lpfc_cmd->pCmd != cmnd) | |
2512 | goto out; | |
dea3101e | 2513 | |
0bd4ca25 | 2514 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 2515 | |
0bd4ca25 JSEC |
2516 | abtsiocb = lpfc_sli_get_iocbq(phba); |
2517 | if (abtsiocb == NULL) { | |
2518 | ret = FAILED; | |
dea3101e | 2519 | goto out; |
2520 | } | |
2521 | ||
dea3101e | 2522 | /* |
0bd4ca25 JSEC |
2523 | * The scsi command can not be in txq and it is in flight because the |
2524 | * pCmd is still pointig at the SCSI command we have to abort. There | |
2525 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 2526 | */ |
dea3101e | 2527 | |
0bd4ca25 JSEC |
2528 | cmd = &iocb->iocb; |
2529 | icmd = &abtsiocb->iocb; | |
2530 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
2531 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
2532 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 2533 | |
0bd4ca25 JSEC |
2534 | icmd->ulpLe = 1; |
2535 | icmd->ulpClass = cmd->ulpClass; | |
2e0fef85 | 2536 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
2537 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
2538 | else | |
2539 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 2540 | |
0bd4ca25 | 2541 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 2542 | abtsiocb->vport = vport; |
0bd4ca25 JSEC |
2543 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
2544 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
2545 | ret = FAILED; | |
2546 | goto out; | |
2547 | } | |
dea3101e | 2548 | |
875fbdfe JSEC |
2549 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
2550 | lpfc_sli_poll_fcp_ring (phba); | |
2551 | ||
fa61a54e | 2552 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 2553 | /* Wait for abort to complete */ |
fa61a54e JS |
2554 | wait_event_timeout(waitq, |
2555 | (lpfc_cmd->pCmd != cmnd), | |
2556 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 2557 | |
fa61a54e JS |
2558 | spin_lock_irq(shost->host_lock); |
2559 | lpfc_cmd->waitq = NULL; | |
2560 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 2561 | |
0bd4ca25 JSEC |
2562 | if (lpfc_cmd->pCmd == cmnd) { |
2563 | ret = FAILED; | |
e8b62011 JS |
2564 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2565 | "0748 abort handler timed out waiting " | |
2566 | "for abort to complete: ret %#x, ID %d, " | |
2567 | "LUN %d, snum %#lx\n", | |
2568 | ret, cmnd->device->id, cmnd->device->lun, | |
2569 | cmnd->serial_number); | |
dea3101e | 2570 | } |
2571 | ||
2572 | out: | |
e8b62011 JS |
2573 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2574 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
2575 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
2576 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 2577 | return ret; |
8fa728a2 JG |
2578 | } |
2579 | ||
9bad7671 JS |
2580 | /** |
2581 | * lpfc_device_reset_handler: eh_device_reset entry point of Scsi Host Template | |
2582 | *data structure. | |
2583 | * @cmnd: Pointer to scsi_cmnd data structure. | |
2584 | * | |
2585 | * This routine does a device reset by sending a TARGET_RESET task management | |
2586 | * command. | |
2587 | * | |
2588 | * Return code : | |
2589 | * 0x2003 - Error | |
2590 | * 0ex2002 - Success | |
2591 | **/ | |
dea3101e | 2592 | static int |
7054a606 | 2593 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 2594 | { |
2e0fef85 JS |
2595 | struct Scsi_Host *shost = cmnd->device->host; |
2596 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2597 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
2598 | struct lpfc_scsi_buf *lpfc_cmd; |
2599 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e | 2600 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
2601 | struct lpfc_nodelist *pnode = rdata->pnode; | |
915caaaf JS |
2602 | unsigned long later; |
2603 | int ret = SUCCESS; | |
2604 | int status; | |
2605 | int cnt; | |
ea2151b4 | 2606 | struct lpfc_scsi_event_header scsi_event; |
dea3101e | 2607 | |
a90f5684 | 2608 | lpfc_block_error_handler(cmnd); |
dea3101e | 2609 | /* |
2610 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 2611 | * target is rediscovered or devloss timeout expires. |
dea3101e | 2612 | */ |
915caaaf JS |
2613 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
2614 | while (time_after(later, jiffies)) { | |
58da1ffb | 2615 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 2616 | return FAILED; |
f5603511 | 2617 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e | 2618 | break; |
915caaaf JS |
2619 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
2620 | rdata = cmnd->device->hostdata; | |
2621 | if (!rdata) | |
2622 | break; | |
2623 | pnode = rdata->pnode; | |
2624 | } | |
ea2151b4 JS |
2625 | |
2626 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
2627 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
2628 | scsi_event.lun = 0; | |
2629 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2630 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2631 | ||
2632 | fc_host_post_vendor_event(shost, | |
2633 | fc_get_event_number(), | |
2634 | sizeof(scsi_event), | |
2635 | (char *)&scsi_event, | |
ddcc50f0 | 2636 | LPFC_NL_VENDOR_ID); |
ea2151b4 | 2637 | |
915caaaf JS |
2638 | if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) { |
2639 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
2640 | "0721 LUN Reset rport " | |
2641 | "failure: msec x%x rdata x%p\n", | |
2642 | jiffies_to_msecs(jiffies - later), rdata); | |
2643 | return FAILED; | |
dea3101e | 2644 | } |
2e0fef85 | 2645 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 2646 | if (lpfc_cmd == NULL) |
915caaaf | 2647 | return FAILED; |
dea3101e | 2648 | lpfc_cmd->timeout = 60; |
0b18ac42 | 2649 | lpfc_cmd->rdata = rdata; |
dea3101e | 2650 | |
915caaaf JS |
2651 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, |
2652 | cmnd->device->lun, | |
2653 | FCP_TARGET_RESET); | |
2654 | if (!status) { | |
2655 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2656 | return FAILED; | |
2657 | } | |
dea3101e | 2658 | iocbq = &lpfc_cmd->cur_iocbq; |
2659 | ||
2660 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 2661 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
2662 | if (iocbqrsp == NULL) { |
2663 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2664 | return FAILED; | |
2665 | } | |
e8b62011 JS |
2666 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2667 | "0703 Issue target reset to TGT %d LUN %d " | |
2668 | "rpi x%x nlp_flag x%x\n", cmnd->device->id, | |
2669 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); | |
915caaaf JS |
2670 | status = lpfc_sli_issue_iocb_wait(phba, |
2671 | &phba->sli.ring[phba->sli.fcp_ring], | |
2672 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
2673 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 2674 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
2675 | ret = TIMEOUT_ERROR; |
2676 | } else { | |
2677 | if (status != IOCB_SUCCESS) | |
2678 | ret = FAILED; | |
2679 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2680 | } | |
2681 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
2682 | "0713 SCSI layer issued device reset (%d, %d) " | |
2683 | "return x%x status x%x result x%x\n", | |
2684 | cmnd->device->id, cmnd->device->lun, ret, | |
2685 | iocbqrsp->iocb.ulpStatus, | |
2686 | iocbqrsp->iocb.un.ulpWord[4]); | |
6175c02a | 2687 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
51ef4c26 | 2688 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun, |
915caaaf | 2689 | LPFC_CTX_TGT); |
6175c02a | 2690 | if (cnt) |
51ef4c26 | 2691 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
6175c02a | 2692 | cmnd->device->id, cmnd->device->lun, |
915caaaf JS |
2693 | LPFC_CTX_TGT); |
2694 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
2695 | while (time_after(later, jiffies) && cnt) { | |
2696 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 2697 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, |
915caaaf | 2698 | cmnd->device->lun, LPFC_CTX_TGT); |
dea3101e | 2699 | } |
dea3101e | 2700 | if (cnt) { |
e8b62011 JS |
2701 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2702 | "0719 device reset I/O flush failure: " | |
2703 | "cnt x%x\n", cnt); | |
0bd4ca25 | 2704 | ret = FAILED; |
dea3101e | 2705 | } |
dea3101e | 2706 | return ret; |
2707 | } | |
2708 | ||
9bad7671 JS |
2709 | /** |
2710 | * lpfc_bus_reset_handler: eh_bus_reset_handler entry point of Scsi Host | |
2711 | * Template data structure. | |
2712 | * @cmnd: Pointer to scsi_cmnd data structure. | |
2713 | * | |
2714 | * This routine does target reset to all target on @cmnd->device->host. | |
2715 | * | |
2716 | * Return Code: | |
2717 | * 0x2003 - Error | |
2718 | * 0x2002 - Success | |
2719 | **/ | |
94d0e7b8 | 2720 | static int |
7054a606 | 2721 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 2722 | { |
2e0fef85 JS |
2723 | struct Scsi_Host *shost = cmnd->device->host; |
2724 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2725 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2726 | struct lpfc_nodelist *ndlp = NULL; |
2727 | int match; | |
d7c255b2 | 2728 | int ret = SUCCESS, status = SUCCESS, i; |
915caaaf | 2729 | int cnt; |
0bd4ca25 | 2730 | struct lpfc_scsi_buf * lpfc_cmd; |
915caaaf | 2731 | unsigned long later; |
ea2151b4 JS |
2732 | struct lpfc_scsi_event_header scsi_event; |
2733 | ||
2734 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
2735 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
2736 | scsi_event.lun = 0; | |
2737 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
2738 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
2739 | ||
2740 | fc_host_post_vendor_event(shost, | |
2741 | fc_get_event_number(), | |
2742 | sizeof(scsi_event), | |
2743 | (char *)&scsi_event, | |
ddcc50f0 | 2744 | LPFC_NL_VENDOR_ID); |
dea3101e | 2745 | |
a90f5684 | 2746 | lpfc_block_error_handler(cmnd); |
dea3101e | 2747 | /* |
2748 | * Since the driver manages a single bus device, reset all | |
2749 | * targets known to the driver. Should any target reset | |
2750 | * fail, this routine returns failure to the midlayer. | |
2751 | */ | |
e17da18e | 2752 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 2753 | /* Search for mapped node by target ID */ |
dea3101e | 2754 | match = 0; |
2e0fef85 JS |
2755 | spin_lock_irq(shost->host_lock); |
2756 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
2757 | if (!NLP_CHK_NODE_ACT(ndlp)) |
2758 | continue; | |
685f0bf7 | 2759 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 2760 | ndlp->nlp_sid == i && |
685f0bf7 | 2761 | ndlp->rport) { |
dea3101e | 2762 | match = 1; |
2763 | break; | |
2764 | } | |
2765 | } | |
2e0fef85 | 2766 | spin_unlock_irq(shost->host_lock); |
dea3101e | 2767 | if (!match) |
2768 | continue; | |
915caaaf JS |
2769 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
2770 | if (lpfc_cmd) { | |
2771 | lpfc_cmd->timeout = 60; | |
2772 | status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, | |
2773 | cmnd->device->lun, | |
2774 | ndlp->rport->dd_data); | |
2775 | if (status != TIMEOUT_ERROR) | |
2776 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2777 | } | |
2778 | if (!lpfc_cmd || status != SUCCESS) { | |
e8b62011 JS |
2779 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2780 | "0700 Bus Reset on target %d failed\n", | |
2781 | i); | |
915caaaf | 2782 | ret = FAILED; |
dea3101e | 2783 | } |
2784 | } | |
6175c02a JSEC |
2785 | /* |
2786 | * All outstanding txcmplq I/Os should have been aborted by | |
2787 | * the targets. Unfortunately, some targets do not abide by | |
2788 | * this forcing the driver to double check. | |
2789 | */ | |
51ef4c26 | 2790 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
6175c02a | 2791 | if (cnt) |
51ef4c26 JS |
2792 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
2793 | 0, 0, LPFC_CTX_HOST); | |
915caaaf JS |
2794 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
2795 | while (time_after(later, jiffies) && cnt) { | |
2796 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 2797 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
dea3101e | 2798 | } |
dea3101e | 2799 | if (cnt) { |
e8b62011 JS |
2800 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2801 | "0715 Bus Reset I/O flush failure: " | |
2802 | "cnt x%x left x%x\n", cnt, i); | |
0bd4ca25 | 2803 | ret = FAILED; |
6175c02a | 2804 | } |
e8b62011 JS |
2805 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2806 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 2807 | return ret; |
2808 | } | |
2809 | ||
9bad7671 JS |
2810 | /** |
2811 | * lpfc_slave_alloc: slave_alloc entry point of Scsi Host Template data | |
2812 | * structure. | |
2813 | * @sdev: Pointer to scsi_device. | |
2814 | * | |
2815 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
2816 | * globally available list of scsi buffers. This routine also makes sure scsi | |
2817 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
2818 | * of scsi buffer exists for the lifetime of the driver. | |
2819 | * | |
2820 | * Return codes: | |
2821 | * non-0 - Error | |
2822 | * 0 - Success | |
2823 | **/ | |
dea3101e | 2824 | static int |
2825 | lpfc_slave_alloc(struct scsi_device *sdev) | |
2826 | { | |
2e0fef85 JS |
2827 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
2828 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2829 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 2830 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e | 2831 | uint32_t total = 0, i; |
2832 | uint32_t num_to_alloc = 0; | |
2833 | unsigned long flags; | |
dea3101e | 2834 | |
19a7b4ae | 2835 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 2836 | return -ENXIO; |
2837 | ||
19a7b4ae | 2838 | sdev->hostdata = rport->dd_data; |
dea3101e | 2839 | |
2840 | /* | |
2841 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
2842 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
2843 | * HBA limit conveyed to the midlayer via the host structure. The |
2844 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
2845 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 2846 | */ |
2847 | total = phba->total_scsi_bufs; | |
3de2a653 | 2848 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
2849 | |
2850 | /* Allow some exchanges to be available always to complete discovery */ | |
2851 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
2852 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2853 | "0704 At limitation of %d preallocated " | |
2854 | "command buffers\n", total); | |
dea3101e | 2855 | return 0; |
92d7f7b0 JS |
2856 | /* Allow some exchanges to be available always to complete discovery */ |
2857 | } else if (total + num_to_alloc > | |
2858 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
2859 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2860 | "0705 Allocation request of %d " | |
2861 | "command buffers will exceed max of %d. " | |
2862 | "Reducing allocation request to %d.\n", | |
2863 | num_to_alloc, phba->cfg_hba_queue_depth, | |
2864 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 2865 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
2866 | } | |
2867 | ||
2868 | for (i = 0; i < num_to_alloc; i++) { | |
2e0fef85 | 2869 | scsi_buf = lpfc_new_scsi_buf(vport); |
dea3101e | 2870 | if (!scsi_buf) { |
e8b62011 JS |
2871 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2872 | "0706 Failed to allocate " | |
2873 | "command buffer\n"); | |
dea3101e | 2874 | break; |
2875 | } | |
2876 | ||
875fbdfe | 2877 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e | 2878 | phba->total_scsi_bufs++; |
2879 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 2880 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e | 2881 | } |
2882 | return 0; | |
2883 | } | |
2884 | ||
9bad7671 JS |
2885 | /** |
2886 | * lpfc_slave_configure: slave_configure entry point of Scsi Host Templater data | |
2887 | * structure. | |
2888 | * @sdev: Pointer to scsi_device. | |
2889 | * | |
2890 | * This routine configures following items | |
2891 | * - Tag command queuing support for @sdev if supported. | |
2892 | * - Dev loss time out value of fc_rport. | |
2893 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. | |
2894 | * | |
2895 | * Return codes: | |
2896 | * 0 - Success | |
2897 | **/ | |
dea3101e | 2898 | static int |
2899 | lpfc_slave_configure(struct scsi_device *sdev) | |
2900 | { | |
2e0fef85 JS |
2901 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
2902 | struct lpfc_hba *phba = vport->phba; | |
2903 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e | 2904 | |
2905 | if (sdev->tagged_supported) | |
3de2a653 | 2906 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 2907 | else |
3de2a653 | 2908 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 2909 | |
2910 | /* | |
2911 | * Initialize the fc transport attributes for the target | |
2912 | * containing this scsi device. Also note that the driver's | |
2913 | * target pointer is stored in the starget_data for the | |
2914 | * driver's sysfs entry point functions. | |
2915 | */ | |
3de2a653 | 2916 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 2917 | |
875fbdfe JSEC |
2918 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
2919 | lpfc_sli_poll_fcp_ring(phba); | |
2920 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
2921 | lpfc_poll_rearm_timer(phba); | |
2922 | } | |
2923 | ||
dea3101e | 2924 | return 0; |
2925 | } | |
2926 | ||
9bad7671 JS |
2927 | /** |
2928 | * lpfc_slave_destroy: slave_destroy entry point of SHT data structure. | |
2929 | * @sdev: Pointer to scsi_device. | |
2930 | * | |
2931 | * This routine sets @sdev hostatdata filed to null. | |
2932 | **/ | |
dea3101e | 2933 | static void |
2934 | lpfc_slave_destroy(struct scsi_device *sdev) | |
2935 | { | |
2936 | sdev->hostdata = NULL; | |
2937 | return; | |
2938 | } | |
2939 | ||
92d7f7b0 | 2940 | |
dea3101e | 2941 | struct scsi_host_template lpfc_template = { |
2942 | .module = THIS_MODULE, | |
2943 | .name = LPFC_DRIVER_NAME, | |
2944 | .info = lpfc_info, | |
2945 | .queuecommand = lpfc_queuecommand, | |
2946 | .eh_abort_handler = lpfc_abort_handler, | |
7054a606 JS |
2947 | .eh_device_reset_handler= lpfc_device_reset_handler, |
2948 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
dea3101e | 2949 | .slave_alloc = lpfc_slave_alloc, |
2950 | .slave_configure = lpfc_slave_configure, | |
2951 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 2952 | .scan_finished = lpfc_scan_finished, |
dea3101e | 2953 | .this_id = -1, |
83108bd3 | 2954 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e | 2955 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
2956 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 2957 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 2958 | .max_sectors = 0xFFFF, |
dea3101e | 2959 | }; |
3de2a653 JS |
2960 | |
2961 | struct scsi_host_template lpfc_vport_template = { | |
2962 | .module = THIS_MODULE, | |
2963 | .name = LPFC_DRIVER_NAME, | |
2964 | .info = lpfc_info, | |
2965 | .queuecommand = lpfc_queuecommand, | |
2966 | .eh_abort_handler = lpfc_abort_handler, | |
2967 | .eh_device_reset_handler= lpfc_device_reset_handler, | |
2968 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
2969 | .slave_alloc = lpfc_slave_alloc, | |
2970 | .slave_configure = lpfc_slave_configure, | |
2971 | .slave_destroy = lpfc_slave_destroy, | |
2972 | .scan_finished = lpfc_scan_finished, | |
2973 | .this_id = -1, | |
83108bd3 | 2974 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
2975 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
2976 | .use_clustering = ENABLE_CLUSTERING, | |
2977 | .shost_attrs = lpfc_vport_attrs, | |
2978 | .max_sectors = 0xFFFF, | |
2979 | }; |