Commit | Line | Data |
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d85296cf | 1 | /******************************************************************* |
dea3101e | 2 | * This file is part of the Emulex Linux Device Driver for * |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
acd6859b | 4 | * Copyright (C) 2004-2012 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e | 8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
dea3101e | 21 | #include <linux/pci.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
dea3101e | 23 | #include <linux/interrupt.h> |
09703660 | 24 | #include <linux/export.h> |
a90f5684 | 25 | #include <linux/delay.h> |
e2a0a9d6 | 26 | #include <asm/unaligned.h> |
dea3101e | 27 | |
28 | #include <scsi/scsi.h> | |
29 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 30 | #include <scsi/scsi_eh.h> |
dea3101e | 31 | #include <scsi/scsi_host.h> |
32 | #include <scsi/scsi_tcq.h> | |
33 | #include <scsi/scsi_transport_fc.h> | |
34 | ||
35 | #include "lpfc_version.h" | |
da0436e9 | 36 | #include "lpfc_hw4.h" |
dea3101e | 37 | #include "lpfc_hw.h" |
38 | #include "lpfc_sli.h" | |
da0436e9 | 39 | #include "lpfc_sli4.h" |
ea2151b4 | 40 | #include "lpfc_nl.h" |
dea3101e | 41 | #include "lpfc_disc.h" |
dea3101e | 42 | #include "lpfc.h" |
9a6b09c0 | 43 | #include "lpfc_scsi.h" |
dea3101e | 44 | #include "lpfc_logmsg.h" |
45 | #include "lpfc_crtn.h" | |
92d7f7b0 | 46 | #include "lpfc_vport.h" |
dea3101e | 47 | |
48 | #define LPFC_RESET_WAIT 2 | |
49 | #define LPFC_ABORT_WAIT 2 | |
50 | ||
e2a0a9d6 JS |
51 | int _dump_buf_done; |
52 | ||
53 | static char *dif_op_str[] = { | |
9a6b09c0 JS |
54 | "PROT_NORMAL", |
55 | "PROT_READ_INSERT", | |
56 | "PROT_WRITE_STRIP", | |
57 | "PROT_READ_STRIP", | |
58 | "PROT_WRITE_INSERT", | |
59 | "PROT_READ_PASS", | |
60 | "PROT_WRITE_PASS", | |
61 | }; | |
62 | ||
63 | static char *dif_grd_str[] = { | |
64 | "NO_GUARD", | |
65 | "DIF_CRC", | |
66 | "DIX_IP", | |
e2a0a9d6 | 67 | }; |
f9bb2da1 JS |
68 | |
69 | struct scsi_dif_tuple { | |
70 | __be16 guard_tag; /* Checksum */ | |
71 | __be16 app_tag; /* Opaque storage */ | |
72 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
73 | }; | |
74 | ||
da0436e9 JS |
75 | static void |
76 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
1c6f4ef5 JS |
77 | static void |
78 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
e2a0a9d6 JS |
79 | |
80 | static void | |
6a9c52cf | 81 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
82 | { |
83 | void *src, *dst; | |
84 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
85 | ||
86 | if (!_dump_buf_data) { | |
6a9c52cf JS |
87 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
88 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
89 | __func__); |
90 | return; | |
91 | } | |
92 | ||
93 | ||
94 | if (!sgde) { | |
6a9c52cf JS |
95 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
96 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
97 | return; |
98 | } | |
99 | ||
100 | dst = (void *) _dump_buf_data; | |
101 | while (sgde) { | |
102 | src = sg_virt(sgde); | |
103 | memcpy(dst, src, sgde->length); | |
104 | dst += sgde->length; | |
105 | sgde = sg_next(sgde); | |
106 | } | |
107 | } | |
108 | ||
109 | static void | |
6a9c52cf | 110 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
111 | { |
112 | void *src, *dst; | |
113 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
114 | ||
115 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
116 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
117 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
118 | __func__); |
119 | return; | |
120 | } | |
121 | ||
122 | if (!sgde) { | |
6a9c52cf JS |
123 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
124 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
125 | return; |
126 | } | |
127 | ||
128 | dst = _dump_buf_dif; | |
129 | while (sgde) { | |
130 | src = sg_virt(sgde); | |
131 | memcpy(dst, src, sgde->length); | |
132 | dst += sgde->length; | |
133 | sgde = sg_next(sgde); | |
134 | } | |
135 | } | |
136 | ||
f1126688 JS |
137 | /** |
138 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
139 | * @phba: Pointer to HBA object. | |
140 | * @lpfc_cmd: lpfc scsi command object pointer. | |
141 | * | |
142 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
143 | * set the last bit in the response sge entry. | |
144 | **/ | |
145 | static void | |
146 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
147 | struct lpfc_scsi_buf *lpfc_cmd) | |
148 | { | |
149 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
150 | if (sgl) { | |
151 | sgl += 1; | |
152 | sgl->word2 = le32_to_cpu(sgl->word2); | |
153 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
154 | sgl->word2 = cpu_to_le32(sgl->word2); | |
155 | } | |
156 | } | |
157 | ||
ea2151b4 | 158 | /** |
3621a710 | 159 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
160 | * @phba: Pointer to HBA object. |
161 | * @lpfc_cmd: lpfc scsi command object pointer. | |
162 | * | |
163 | * This function is called when there is a command completion and this | |
164 | * function updates the statistical data for the command completion. | |
165 | **/ | |
166 | static void | |
167 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
168 | { | |
169 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
170 | struct lpfc_nodelist *pnode = rdata->pnode; | |
171 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
172 | unsigned long flags; | |
173 | struct Scsi_Host *shost = cmd->device->host; | |
174 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
175 | unsigned long latency; | |
176 | int i; | |
177 | ||
178 | if (cmd->result) | |
179 | return; | |
180 | ||
9f1e1b50 JS |
181 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
182 | ||
ea2151b4 JS |
183 | spin_lock_irqsave(shost->host_lock, flags); |
184 | if (!vport->stat_data_enabled || | |
185 | vport->stat_data_blocked || | |
5989b8d4 | 186 | !pnode || |
ea2151b4 JS |
187 | !pnode->lat_data || |
188 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
189 | spin_unlock_irqrestore(shost->host_lock, flags); | |
190 | return; | |
191 | } | |
ea2151b4 JS |
192 | |
193 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
194 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
195 | phba->bucket_step; | |
9f1e1b50 JS |
196 | /* check array subscript bounds */ |
197 | if (i < 0) | |
198 | i = 0; | |
199 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
200 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
201 | } else { |
202 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
203 | if (latency <= (phba->bucket_base + | |
204 | ((1<<i)*phba->bucket_step))) | |
205 | break; | |
206 | } | |
207 | ||
208 | pnode->lat_data[i].cmd_count++; | |
209 | spin_unlock_irqrestore(shost->host_lock, flags); | |
210 | } | |
211 | ||
ea2151b4 | 212 | /** |
3621a710 | 213 | * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event |
ea2151b4 JS |
214 | * @phba: Pointer to HBA context object. |
215 | * @vport: Pointer to vport object. | |
216 | * @ndlp: Pointer to FC node associated with the target. | |
217 | * @lun: Lun number of the scsi device. | |
218 | * @old_val: Old value of the queue depth. | |
219 | * @new_val: New value of the queue depth. | |
220 | * | |
221 | * This function sends an event to the mgmt application indicating | |
222 | * there is a change in the scsi device queue depth. | |
223 | **/ | |
224 | static void | |
225 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
226 | struct lpfc_vport *vport, | |
227 | struct lpfc_nodelist *ndlp, | |
228 | uint32_t lun, | |
229 | uint32_t old_val, | |
230 | uint32_t new_val) | |
231 | { | |
232 | struct lpfc_fast_path_event *fast_path_evt; | |
233 | unsigned long flags; | |
234 | ||
235 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
236 | if (!fast_path_evt) | |
237 | return; | |
238 | ||
239 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
240 | FC_REG_SCSI_EVENT; | |
241 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
242 | LPFC_EVENT_VARQUEDEPTH; | |
243 | ||
244 | /* Report all luns with change in queue depth */ | |
245 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
246 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
247 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
248 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
249 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
250 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
251 | } | |
252 | ||
253 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
254 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
255 | fast_path_evt->vport = vport; | |
256 | ||
257 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
258 | spin_lock_irqsave(&phba->hbalock, flags); | |
259 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
260 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
261 | lpfc_worker_wake_up(phba); | |
262 | ||
263 | return; | |
264 | } | |
265 | ||
5ffc266e JS |
266 | /** |
267 | * lpfc_change_queue_depth - Alter scsi device queue depth | |
268 | * @sdev: Pointer the scsi device on which to change the queue depth. | |
269 | * @qdepth: New queue depth to set the sdev to. | |
270 | * @reason: The reason for the queue depth change. | |
271 | * | |
272 | * This function is called by the midlayer and the LLD to alter the queue | |
273 | * depth for a scsi device. This function sets the queue depth to the new | |
274 | * value and sends an event out to log the queue depth change. | |
275 | **/ | |
276 | int | |
277 | lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) | |
278 | { | |
279 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; | |
280 | struct lpfc_hba *phba = vport->phba; | |
281 | struct lpfc_rport_data *rdata; | |
282 | unsigned long new_queue_depth, old_queue_depth; | |
283 | ||
284 | old_queue_depth = sdev->queue_depth; | |
285 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
286 | new_queue_depth = sdev->queue_depth; | |
287 | rdata = sdev->hostdata; | |
288 | if (rdata) | |
289 | lpfc_send_sdev_queuedepth_change_event(phba, vport, | |
290 | rdata->pnode, sdev->lun, | |
291 | old_queue_depth, | |
292 | new_queue_depth); | |
293 | return sdev->queue_depth; | |
294 | } | |
295 | ||
9bad7671 | 296 | /** |
3621a710 | 297 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
298 | * @phba: The Hba for which this call is being executed. |
299 | * | |
300 | * This routine is called when there is resource error in driver or firmware. | |
301 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
302 | * posts at most 1 event each second. This routine wakes up worker thread of | |
303 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
304 | * | |
305 | * This routine should be called with no lock held. | |
306 | **/ | |
92d7f7b0 | 307 | void |
eaf15d5b | 308 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
309 | { |
310 | unsigned long flags; | |
5e9d9b82 | 311 | uint32_t evt_posted; |
92d7f7b0 JS |
312 | |
313 | spin_lock_irqsave(&phba->hbalock, flags); | |
314 | atomic_inc(&phba->num_rsrc_err); | |
315 | phba->last_rsrc_error_time = jiffies; | |
316 | ||
317 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
318 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
319 | return; | |
320 | } | |
321 | ||
322 | phba->last_ramp_down_time = jiffies; | |
323 | ||
324 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
325 | ||
326 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
327 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
328 | if (!evt_posted) | |
92d7f7b0 | 329 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
330 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
331 | ||
5e9d9b82 JS |
332 | if (!evt_posted) |
333 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
334 | return; |
335 | } | |
336 | ||
9bad7671 | 337 | /** |
3621a710 | 338 | * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread |
9bad7671 JS |
339 | * @phba: The Hba for which this call is being executed. |
340 | * | |
341 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
342 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
343 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
344 | * to process WORKER_RAM_DOWN_EVENT event. | |
345 | * | |
346 | * This routine should be called with no lock held. | |
347 | **/ | |
92d7f7b0 | 348 | static inline void |
3de2a653 | 349 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
a257bf90 | 350 | uint32_t queue_depth) |
92d7f7b0 JS |
351 | { |
352 | unsigned long flags; | |
3de2a653 | 353 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 354 | uint32_t evt_posted; |
92d7f7b0 JS |
355 | atomic_inc(&phba->num_cmd_success); |
356 | ||
a257bf90 | 357 | if (vport->cfg_lun_queue_depth <= queue_depth) |
92d7f7b0 | 358 | return; |
92d7f7b0 | 359 | spin_lock_irqsave(&phba->hbalock, flags); |
5ffc266e JS |
360 | if (time_before(jiffies, |
361 | phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) || | |
362 | time_before(jiffies, | |
363 | phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) { | |
92d7f7b0 JS |
364 | spin_unlock_irqrestore(&phba->hbalock, flags); |
365 | return; | |
366 | } | |
92d7f7b0 JS |
367 | phba->last_ramp_up_time = jiffies; |
368 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
369 | ||
370 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
371 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
372 | if (!evt_posted) | |
92d7f7b0 | 373 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
374 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
375 | ||
5e9d9b82 JS |
376 | if (!evt_posted) |
377 | lpfc_worker_wake_up(phba); | |
378 | return; | |
92d7f7b0 JS |
379 | } |
380 | ||
9bad7671 | 381 | /** |
3621a710 | 382 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
383 | * @phba: The Hba for which this call is being executed. |
384 | * | |
385 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
386 | * thread.This routine reduces queue depth for all scsi device on each vport | |
387 | * associated with @phba. | |
388 | **/ | |
92d7f7b0 JS |
389 | void |
390 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
391 | { | |
549e55cd JS |
392 | struct lpfc_vport **vports; |
393 | struct Scsi_Host *shost; | |
92d7f7b0 | 394 | struct scsi_device *sdev; |
5ffc266e | 395 | unsigned long new_queue_depth; |
92d7f7b0 | 396 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 397 | int i; |
92d7f7b0 JS |
398 | |
399 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
400 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
401 | ||
75ad83a4 JS |
402 | /* |
403 | * The error and success command counters are global per | |
404 | * driver instance. If another handler has already | |
405 | * operated on this error event, just exit. | |
406 | */ | |
407 | if (num_rsrc_err == 0) | |
408 | return; | |
409 | ||
549e55cd JS |
410 | vports = lpfc_create_vport_work_array(phba); |
411 | if (vports != NULL) | |
21e9a0a5 | 412 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
413 | shost = lpfc_shost_from_vport(vports[i]); |
414 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 415 | new_queue_depth = |
549e55cd JS |
416 | sdev->queue_depth * num_rsrc_err / |
417 | (num_rsrc_err + num_cmd_success); | |
418 | if (!new_queue_depth) | |
419 | new_queue_depth = sdev->queue_depth - 1; | |
420 | else | |
421 | new_queue_depth = sdev->queue_depth - | |
422 | new_queue_depth; | |
5ffc266e JS |
423 | lpfc_change_queue_depth(sdev, new_queue_depth, |
424 | SCSI_QDEPTH_DEFAULT); | |
549e55cd | 425 | } |
92d7f7b0 | 426 | } |
09372820 | 427 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
428 | atomic_set(&phba->num_rsrc_err, 0); |
429 | atomic_set(&phba->num_cmd_success, 0); | |
430 | } | |
431 | ||
9bad7671 | 432 | /** |
3621a710 | 433 | * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler |
9bad7671 JS |
434 | * @phba: The Hba for which this call is being executed. |
435 | * | |
436 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
437 | * thread.This routine increases queue depth for all scsi device on each vport | |
438 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
439 | * num_cmd_success to zero. | |
440 | **/ | |
92d7f7b0 JS |
441 | void |
442 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
443 | { | |
549e55cd JS |
444 | struct lpfc_vport **vports; |
445 | struct Scsi_Host *shost; | |
92d7f7b0 | 446 | struct scsi_device *sdev; |
549e55cd JS |
447 | int i; |
448 | ||
449 | vports = lpfc_create_vport_work_array(phba); | |
450 | if (vports != NULL) | |
21e9a0a5 | 451 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
452 | shost = lpfc_shost_from_vport(vports[i]); |
453 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
454 | if (vports[i]->cfg_lun_queue_depth <= |
455 | sdev->queue_depth) | |
456 | continue; | |
5ffc266e JS |
457 | lpfc_change_queue_depth(sdev, |
458 | sdev->queue_depth+1, | |
459 | SCSI_QDEPTH_RAMP_UP); | |
549e55cd | 460 | } |
92d7f7b0 | 461 | } |
09372820 | 462 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
463 | atomic_set(&phba->num_rsrc_err, 0); |
464 | atomic_set(&phba->num_cmd_success, 0); | |
465 | } | |
466 | ||
a8e497d5 | 467 | /** |
3621a710 | 468 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
469 | * @phba: Pointer to HBA context object. |
470 | * | |
471 | * This function walks vport list and set each SCSI host to block state | |
472 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
473 | * with EEH when device's PCI slot has been permanently disabled. | |
474 | **/ | |
475 | void | |
476 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
477 | { | |
478 | struct lpfc_vport **vports; | |
479 | struct Scsi_Host *shost; | |
480 | struct scsi_device *sdev; | |
481 | struct fc_rport *rport; | |
482 | int i; | |
483 | ||
484 | vports = lpfc_create_vport_work_array(phba); | |
485 | if (vports != NULL) | |
21e9a0a5 | 486 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
487 | shost = lpfc_shost_from_vport(vports[i]); |
488 | shost_for_each_device(sdev, shost) { | |
489 | rport = starget_to_rport(scsi_target(sdev)); | |
490 | fc_remote_port_delete(rport); | |
491 | } | |
492 | } | |
493 | lpfc_destroy_vport_work_array(phba, vports); | |
494 | } | |
495 | ||
9bad7671 | 496 | /** |
3772a991 | 497 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 498 | * @vport: The virtual port for which this call being executed. |
3772a991 | 499 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 500 | * |
3772a991 JS |
501 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
502 | * the scsi buffer contains all the necessary information needed to initiate | |
503 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
504 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
505 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
506 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
507 | * |
508 | * Return codes: | |
3772a991 JS |
509 | * int - number of scsi buffers that were allocated. |
510 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 511 | **/ |
3772a991 JS |
512 | static int |
513 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 514 | { |
2e0fef85 | 515 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 516 | struct lpfc_scsi_buf *psb; |
517 | struct ulp_bde64 *bpl; | |
518 | IOCB_t *iocb; | |
34b02dcd JS |
519 | dma_addr_t pdma_phys_fcp_cmd; |
520 | dma_addr_t pdma_phys_fcp_rsp; | |
521 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 522 | uint16_t iotag; |
3772a991 | 523 | int bcnt; |
dea3101e | 524 | |
3772a991 JS |
525 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
526 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
527 | if (!psb) | |
528 | break; | |
dea3101e | 529 | |
3772a991 JS |
530 | /* |
531 | * Get memory from the pci pool to map the virt space to pci | |
532 | * bus space for an I/O. The DMA buffer includes space for the | |
533 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
534 | * necessary to support the sg_tablesize. | |
535 | */ | |
536 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
537 | GFP_KERNEL, &psb->dma_handle); | |
538 | if (!psb->data) { | |
539 | kfree(psb); | |
540 | break; | |
541 | } | |
542 | ||
543 | /* Initialize virtual ptrs to dma_buf region. */ | |
544 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
545 | ||
546 | /* Allocate iotag for psb->cur_iocbq. */ | |
547 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
548 | if (iotag == 0) { | |
549 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
550 | psb->data, psb->dma_handle); | |
551 | kfree(psb); | |
552 | break; | |
553 | } | |
554 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
555 | ||
556 | psb->fcp_cmnd = psb->data; | |
557 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
558 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 559 | sizeof(struct fcp_rsp); |
dea3101e | 560 | |
3772a991 JS |
561 | /* Initialize local short-hand pointers. */ |
562 | bpl = psb->fcp_bpl; | |
563 | pdma_phys_fcp_cmd = psb->dma_handle; | |
564 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
565 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
566 | sizeof(struct fcp_rsp); | |
567 | ||
568 | /* | |
569 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
570 | * are sg list bdes. Initialize the first two and leave the | |
571 | * rest for queuecommand. | |
572 | */ | |
573 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
574 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
575 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
576 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
577 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
578 | ||
579 | /* Setup the physical region for the FCP RSP */ | |
580 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
581 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
582 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
583 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
584 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
585 | ||
586 | /* | |
587 | * Since the IOCB for the FCP I/O is built into this | |
588 | * lpfc_scsi_buf, initialize it with all known data now. | |
589 | */ | |
590 | iocb = &psb->cur_iocbq.iocb; | |
591 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
592 | if ((phba->sli_rev == 3) && | |
593 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
594 | /* fill in immediate fcp command BDE */ | |
595 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
596 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
597 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
598 | unsli3.fcp_ext.icd); | |
599 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
600 | iocb->ulpBdeCount = 0; | |
601 | iocb->ulpLe = 0; | |
25985edc | 602 | /* fill in response BDE */ |
3772a991 JS |
603 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = |
604 | BUFF_TYPE_BDE_64; | |
605 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
606 | sizeof(struct fcp_rsp); | |
607 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
608 | putPaddrLow(pdma_phys_fcp_rsp); | |
609 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
610 | putPaddrHigh(pdma_phys_fcp_rsp); | |
611 | } else { | |
612 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
613 | iocb->un.fcpi64.bdl.bdeSize = | |
614 | (2 * sizeof(struct ulp_bde64)); | |
615 | iocb->un.fcpi64.bdl.addrLow = | |
616 | putPaddrLow(pdma_phys_bpl); | |
617 | iocb->un.fcpi64.bdl.addrHigh = | |
618 | putPaddrHigh(pdma_phys_bpl); | |
619 | iocb->ulpBdeCount = 1; | |
620 | iocb->ulpLe = 1; | |
621 | } | |
622 | iocb->ulpClass = CLASS3; | |
623 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 | 624 | /* Put it back into the SCSI buffer list */ |
eee8877e | 625 | psb->cur_iocbq.context1 = psb; |
1c6f4ef5 | 626 | lpfc_release_scsi_buf_s3(phba, psb); |
dea3101e | 627 | |
34b02dcd | 628 | } |
dea3101e | 629 | |
3772a991 | 630 | return bcnt; |
dea3101e | 631 | } |
632 | ||
1151e3ec JS |
633 | /** |
634 | * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport | |
635 | * @vport: pointer to lpfc vport data structure. | |
636 | * | |
637 | * This routine is invoked by the vport cleanup for deletions and the cleanup | |
638 | * for an ndlp on removal. | |
639 | **/ | |
640 | void | |
641 | lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) | |
642 | { | |
643 | struct lpfc_hba *phba = vport->phba; | |
644 | struct lpfc_scsi_buf *psb, *next_psb; | |
645 | unsigned long iflag = 0; | |
646 | ||
647 | spin_lock_irqsave(&phba->hbalock, iflag); | |
648 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
649 | list_for_each_entry_safe(psb, next_psb, | |
650 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
651 | if (psb->rdata && psb->rdata->pnode | |
652 | && psb->rdata->pnode->vport == vport) | |
653 | psb->rdata = NULL; | |
654 | } | |
655 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
656 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
657 | } | |
658 | ||
da0436e9 JS |
659 | /** |
660 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
661 | * @phba: pointer to lpfc hba data structure. | |
662 | * @axri: pointer to the fcp xri abort wcqe structure. | |
663 | * | |
664 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
665 | * FCP aborted xri. | |
666 | **/ | |
667 | void | |
668 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
669 | struct sli4_wcqe_xri_aborted *axri) | |
670 | { | |
671 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
19ca7609 | 672 | uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); |
da0436e9 JS |
673 | struct lpfc_scsi_buf *psb, *next_psb; |
674 | unsigned long iflag = 0; | |
0f65ff68 JS |
675 | struct lpfc_iocbq *iocbq; |
676 | int i; | |
19ca7609 JS |
677 | struct lpfc_nodelist *ndlp; |
678 | int rrq_empty = 0; | |
589a52d6 | 679 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
da0436e9 | 680 | |
0f65ff68 JS |
681 | spin_lock_irqsave(&phba->hbalock, iflag); |
682 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
da0436e9 JS |
683 | list_for_each_entry_safe(psb, next_psb, |
684 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
685 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
686 | list_del(&psb->list); | |
341af102 | 687 | psb->exch_busy = 0; |
da0436e9 | 688 | psb->status = IOSTAT_SUCCESS; |
0f65ff68 JS |
689 | spin_unlock( |
690 | &phba->sli4_hba.abts_scsi_buf_list_lock); | |
1151e3ec JS |
691 | if (psb->rdata && psb->rdata->pnode) |
692 | ndlp = psb->rdata->pnode; | |
693 | else | |
694 | ndlp = NULL; | |
695 | ||
19ca7609 | 696 | rrq_empty = list_empty(&phba->active_rrq_list); |
0f65ff68 | 697 | spin_unlock_irqrestore(&phba->hbalock, iflag); |
cb69f7de | 698 | if (ndlp) { |
ee0f4fe1 JS |
699 | lpfc_set_rrq_active(phba, ndlp, |
700 | psb->cur_iocbq.sli4_lxritag, rxid, 1); | |
cb69f7de JS |
701 | lpfc_sli4_abts_err_handler(phba, ndlp, axri); |
702 | } | |
da0436e9 | 703 | lpfc_release_scsi_buf_s4(phba, psb); |
19ca7609 JS |
704 | if (rrq_empty) |
705 | lpfc_worker_wake_up(phba); | |
da0436e9 JS |
706 | return; |
707 | } | |
708 | } | |
0f65ff68 JS |
709 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); |
710 | for (i = 1; i <= phba->sli.last_iotag; i++) { | |
711 | iocbq = phba->sli.iocbq_lookup[i]; | |
712 | ||
713 | if (!(iocbq->iocb_flag & LPFC_IO_FCP) || | |
714 | (iocbq->iocb_flag & LPFC_IO_LIBDFC)) | |
715 | continue; | |
716 | if (iocbq->sli4_xritag != xri) | |
717 | continue; | |
718 | psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); | |
719 | psb->exch_busy = 0; | |
720 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
589a52d6 JS |
721 | if (pring->txq_cnt) |
722 | lpfc_worker_wake_up(phba); | |
0f65ff68 JS |
723 | return; |
724 | ||
725 | } | |
726 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
da0436e9 JS |
727 | } |
728 | ||
729 | /** | |
8a9d2e80 | 730 | * lpfc_sli4_post_scsi_sgl_list - Psot blocks of scsi buffer sgls from a list |
da0436e9 | 731 | * @phba: pointer to lpfc hba data structure. |
8a9d2e80 | 732 | * @post_sblist: pointer to the scsi buffer list. |
da0436e9 | 733 | * |
8a9d2e80 JS |
734 | * This routine walks a list of scsi buffers that was passed in. It attempts |
735 | * to construct blocks of scsi buffer sgls which contains contiguous xris and | |
736 | * uses the non-embedded SGL block post mailbox commands to post to the port. | |
737 | * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use | |
738 | * embedded SGL post mailbox command for posting. The @post_sblist passed in | |
739 | * must be local list, thus no lock is needed when manipulate the list. | |
da0436e9 | 740 | * |
8a9d2e80 | 741 | * Returns: 0 = failure, non-zero number of successfully posted buffers. |
da0436e9 JS |
742 | **/ |
743 | int | |
8a9d2e80 JS |
744 | lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba, |
745 | struct list_head *post_sblist, int sb_count) | |
da0436e9 | 746 | { |
8a9d2e80 JS |
747 | struct lpfc_scsi_buf *psb, *psb_next; |
748 | int status; | |
749 | int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; | |
750 | dma_addr_t pdma_phys_bpl1; | |
751 | int last_xritag = NO_XRI; | |
752 | LIST_HEAD(prep_sblist); | |
753 | LIST_HEAD(blck_sblist); | |
754 | LIST_HEAD(scsi_sblist); | |
755 | ||
756 | /* sanity check */ | |
757 | if (sb_count <= 0) | |
758 | return -EINVAL; | |
759 | ||
760 | list_for_each_entry_safe(psb, psb_next, post_sblist, list) { | |
761 | list_del_init(&psb->list); | |
762 | block_cnt++; | |
763 | if ((last_xritag != NO_XRI) && | |
764 | (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) { | |
765 | /* a hole in xri block, form a sgl posting block */ | |
766 | list_splice_init(&prep_sblist, &blck_sblist); | |
767 | post_cnt = block_cnt - 1; | |
768 | /* prepare list for next posting block */ | |
769 | list_add_tail(&psb->list, &prep_sblist); | |
770 | block_cnt = 1; | |
771 | } else { | |
772 | /* prepare list for next posting block */ | |
773 | list_add_tail(&psb->list, &prep_sblist); | |
774 | /* enough sgls for non-embed sgl mbox command */ | |
775 | if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
776 | list_splice_init(&prep_sblist, &blck_sblist); | |
777 | post_cnt = block_cnt; | |
778 | block_cnt = 0; | |
da0436e9 | 779 | } |
8a9d2e80 JS |
780 | } |
781 | num_posting++; | |
782 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
da0436e9 | 783 | |
8a9d2e80 JS |
784 | /* end of repost sgl list condition for SCSI buffers */ |
785 | if (num_posting == sb_count) { | |
786 | if (post_cnt == 0) { | |
787 | /* last sgl posting block */ | |
788 | list_splice_init(&prep_sblist, &blck_sblist); | |
789 | post_cnt = block_cnt; | |
790 | } else if (block_cnt == 1) { | |
791 | /* last single sgl with non-contiguous xri */ | |
792 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) | |
793 | pdma_phys_bpl1 = psb->dma_phys_bpl + | |
794 | SGL_PAGE_SIZE; | |
795 | else | |
796 | pdma_phys_bpl1 = 0; | |
797 | status = lpfc_sli4_post_sgl(phba, | |
798 | psb->dma_phys_bpl, | |
799 | pdma_phys_bpl1, | |
800 | psb->cur_iocbq.sli4_xritag); | |
801 | if (status) { | |
802 | /* failure, put on abort scsi list */ | |
803 | psb->exch_busy = 1; | |
804 | } else { | |
805 | /* success, put on SCSI buffer list */ | |
806 | psb->exch_busy = 0; | |
807 | psb->status = IOSTAT_SUCCESS; | |
808 | num_posted++; | |
809 | } | |
810 | /* success, put on SCSI buffer sgl list */ | |
811 | list_add_tail(&psb->list, &scsi_sblist); | |
812 | } | |
813 | } | |
da0436e9 | 814 | |
8a9d2e80 JS |
815 | /* continue until a nembed page worth of sgls */ |
816 | if (post_cnt == 0) | |
da0436e9 | 817 | continue; |
8a9d2e80 JS |
818 | |
819 | /* post block of SCSI buffer list sgls */ | |
820 | status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist, | |
821 | post_cnt); | |
822 | ||
823 | /* don't reset xirtag due to hole in xri block */ | |
824 | if (block_cnt == 0) | |
825 | last_xritag = NO_XRI; | |
826 | ||
827 | /* reset SCSI buffer post count for next round of posting */ | |
828 | post_cnt = 0; | |
829 | ||
830 | /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */ | |
831 | while (!list_empty(&blck_sblist)) { | |
832 | list_remove_head(&blck_sblist, psb, | |
833 | struct lpfc_scsi_buf, list); | |
da0436e9 | 834 | if (status) { |
8a9d2e80 | 835 | /* failure, put on abort scsi list */ |
341af102 | 836 | psb->exch_busy = 1; |
341af102 | 837 | } else { |
8a9d2e80 | 838 | /* success, put on SCSI buffer list */ |
341af102 | 839 | psb->exch_busy = 0; |
da0436e9 | 840 | psb->status = IOSTAT_SUCCESS; |
8a9d2e80 | 841 | num_posted++; |
341af102 | 842 | } |
8a9d2e80 | 843 | list_add_tail(&psb->list, &scsi_sblist); |
da0436e9 JS |
844 | } |
845 | } | |
8a9d2e80 JS |
846 | /* Push SCSI buffers with sgl posted to the availble list */ |
847 | while (!list_empty(&scsi_sblist)) { | |
848 | list_remove_head(&scsi_sblist, psb, | |
849 | struct lpfc_scsi_buf, list); | |
850 | lpfc_release_scsi_buf_s4(phba, psb); | |
851 | } | |
852 | return num_posted; | |
853 | } | |
854 | ||
855 | /** | |
856 | * lpfc_sli4_repost_scsi_sgl_list - Repsot all the allocated scsi buffer sgls | |
857 | * @phba: pointer to lpfc hba data structure. | |
858 | * | |
859 | * This routine walks the list of scsi buffers that have been allocated and | |
860 | * repost them to the port by using SGL block post. This is needed after a | |
861 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
862 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
863 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
864 | * | |
865 | * Returns: 0 = success, non-zero failure. | |
866 | **/ | |
867 | int | |
868 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
869 | { | |
870 | LIST_HEAD(post_sblist); | |
871 | int num_posted, rc = 0; | |
872 | ||
873 | /* get all SCSI buffers need to repost to a local list */ | |
874 | spin_lock(&phba->scsi_buf_list_lock); | |
875 | list_splice_init(&phba->lpfc_scsi_buf_list, &post_sblist); | |
876 | spin_unlock(&phba->scsi_buf_list_lock); | |
877 | ||
878 | /* post the list of scsi buffer sgls to port if available */ | |
879 | if (!list_empty(&post_sblist)) { | |
880 | num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist, | |
881 | phba->sli4_hba.scsi_xri_cnt); | |
882 | /* failed to post any scsi buffer, return error */ | |
883 | if (num_posted == 0) | |
884 | rc = -EIO; | |
885 | } | |
da0436e9 JS |
886 | return rc; |
887 | } | |
888 | ||
889 | /** | |
890 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
891 | * @vport: The virtual port for which this call being executed. | |
892 | * @num_to_allocate: The requested number of buffers to allocate. | |
893 | * | |
8a9d2e80 | 894 | * This routine allocates scsi buffers for device with SLI-4 interface spec, |
da0436e9 | 895 | * the scsi buffer contains all the necessary information needed to initiate |
8a9d2e80 JS |
896 | * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put |
897 | * them on a list, it post them to the port by using SGL block post. | |
da0436e9 JS |
898 | * |
899 | * Return codes: | |
8a9d2e80 | 900 | * int - number of scsi buffers that were allocated and posted. |
da0436e9 JS |
901 | * 0 = failure, less than num_to_alloc is a partial failure. |
902 | **/ | |
903 | static int | |
904 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
905 | { | |
906 | struct lpfc_hba *phba = vport->phba; | |
907 | struct lpfc_scsi_buf *psb; | |
908 | struct sli4_sge *sgl; | |
909 | IOCB_t *iocb; | |
910 | dma_addr_t pdma_phys_fcp_cmd; | |
911 | dma_addr_t pdma_phys_fcp_rsp; | |
912 | dma_addr_t pdma_phys_bpl, pdma_phys_bpl1; | |
8a9d2e80 JS |
913 | uint16_t iotag, lxri = 0; |
914 | int bcnt, num_posted; | |
915 | LIST_HEAD(prep_sblist); | |
916 | LIST_HEAD(post_sblist); | |
917 | LIST_HEAD(scsi_sblist); | |
da0436e9 JS |
918 | |
919 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { | |
920 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
921 | if (!psb) | |
922 | break; | |
da0436e9 | 923 | /* |
8a9d2e80 JS |
924 | * Get memory from the pci pool to map the virt space to |
925 | * pci bus space for an I/O. The DMA buffer includes space | |
926 | * for the struct fcp_cmnd, struct fcp_rsp and the number | |
927 | * of bde's necessary to support the sg_tablesize. | |
da0436e9 JS |
928 | */ |
929 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
930 | GFP_KERNEL, &psb->dma_handle); | |
931 | if (!psb->data) { | |
932 | kfree(psb); | |
933 | break; | |
934 | } | |
da0436e9 JS |
935 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); |
936 | ||
937 | /* Allocate iotag for psb->cur_iocbq. */ | |
938 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
939 | if (iotag == 0) { | |
b92938b4 JS |
940 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
941 | psb->data, psb->dma_handle); | |
da0436e9 JS |
942 | kfree(psb); |
943 | break; | |
944 | } | |
945 | ||
6d368e53 JS |
946 | lxri = lpfc_sli4_next_xritag(phba); |
947 | if (lxri == NO_XRI) { | |
da0436e9 JS |
948 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
949 | psb->data, psb->dma_handle); | |
950 | kfree(psb); | |
951 | break; | |
952 | } | |
6d368e53 JS |
953 | psb->cur_iocbq.sli4_lxritag = lxri; |
954 | psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri]; | |
da0436e9 | 955 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
da0436e9 JS |
956 | psb->fcp_bpl = psb->data; |
957 | psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size) | |
958 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
959 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + | |
960 | sizeof(struct fcp_cmnd)); | |
961 | ||
962 | /* Initialize local short-hand pointers. */ | |
963 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
964 | pdma_phys_bpl = psb->dma_handle; | |
965 | pdma_phys_fcp_cmd = | |
966 | (psb->dma_handle + phba->cfg_sg_dma_buf_size) | |
967 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
968 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); | |
969 | ||
970 | /* | |
8a9d2e80 JS |
971 | * The first two bdes are the FCP_CMD and FCP_RSP. |
972 | * The balance are sg list bdes. Initialize the | |
973 | * first two and leave the rest for queuecommand. | |
da0436e9 JS |
974 | */ |
975 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
976 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
0558056c | 977 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
978 | bf_set(lpfc_sli4_sge_last, sgl, 0); |
979 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 980 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); |
da0436e9 JS |
981 | sgl++; |
982 | ||
983 | /* Setup the physical region for the FCP RSP */ | |
984 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
985 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
0558056c | 986 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
987 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
988 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 989 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); |
da0436e9 JS |
990 | |
991 | /* | |
992 | * Since the IOCB for the FCP I/O is built into this | |
993 | * lpfc_scsi_buf, initialize it with all known data now. | |
994 | */ | |
995 | iocb = &psb->cur_iocbq.iocb; | |
996 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
997 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
998 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
999 | * We are setting the bpl to point to out sgl. An sgl's | |
1000 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
1001 | */ | |
1002 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
1003 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
1004 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
1005 | iocb->ulpBdeCount = 1; | |
1006 | iocb->ulpLe = 1; | |
1007 | iocb->ulpClass = CLASS3; | |
8a9d2e80 | 1008 | psb->cur_iocbq.context1 = psb; |
da0436e9 JS |
1009 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) |
1010 | pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE; | |
1011 | else | |
1012 | pdma_phys_bpl1 = 0; | |
1013 | psb->dma_phys_bpl = pdma_phys_bpl; | |
da0436e9 | 1014 | |
8a9d2e80 JS |
1015 | /* add the scsi buffer to a post list */ |
1016 | list_add_tail(&psb->list, &post_sblist); | |
1017 | spin_lock_irq(&phba->scsi_buf_list_lock); | |
1018 | phba->sli4_hba.scsi_xri_cnt++; | |
1019 | spin_unlock_irq(&phba->scsi_buf_list_lock); | |
1020 | } | |
1021 | lpfc_printf_log(phba, KERN_INFO, LOG_BG, | |
1022 | "3021 Allocate %d out of %d requested new SCSI " | |
1023 | "buffers\n", bcnt, num_to_alloc); | |
1024 | ||
1025 | /* post the list of scsi buffer sgls to port if available */ | |
1026 | if (!list_empty(&post_sblist)) | |
1027 | num_posted = lpfc_sli4_post_scsi_sgl_list(phba, | |
1028 | &post_sblist, bcnt); | |
1029 | else | |
1030 | num_posted = 0; | |
1031 | ||
1032 | return num_posted; | |
da0436e9 JS |
1033 | } |
1034 | ||
9bad7671 | 1035 | /** |
3772a991 JS |
1036 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
1037 | * @vport: The virtual port for which this call being executed. | |
1038 | * @num_to_allocate: The requested number of buffers to allocate. | |
1039 | * | |
1040 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
1041 | * the lpfc_hba struct. | |
1042 | * | |
1043 | * Return codes: | |
1044 | * int - number of scsi buffers that were allocated. | |
1045 | * 0 = failure, less than num_to_alloc is a partial failure. | |
1046 | **/ | |
1047 | static inline int | |
1048 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
1049 | { | |
1050 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
1051 | } | |
1052 | ||
1053 | /** | |
19ca7609 | 1054 | * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA |
3772a991 | 1055 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
1056 | * |
1057 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1058 | * and returns to caller. | |
1059 | * | |
1060 | * Return codes: | |
1061 | * NULL - Error | |
1062 | * Pointer to lpfc_scsi_buf - Success | |
1063 | **/ | |
455c53ec | 1064 | static struct lpfc_scsi_buf* |
19ca7609 | 1065 | lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) |
dea3101e | 1066 | { |
0bd4ca25 JSEC |
1067 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
1068 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 1069 | unsigned long iflag = 0; |
0bd4ca25 | 1070 | |
875fbdfe | 1071 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 1072 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
1073 | if (lpfc_cmd) { |
1074 | lpfc_cmd->seg_cnt = 0; | |
1075 | lpfc_cmd->nonsg_phys = 0; | |
e2a0a9d6 | 1076 | lpfc_cmd->prot_seg_cnt = 0; |
1dcb58e5 | 1077 | } |
875fbdfe | 1078 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
1079 | return lpfc_cmd; |
1080 | } | |
19ca7609 JS |
1081 | /** |
1082 | * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1083 | * @phba: The HBA for which this call is being executed. | |
1084 | * | |
1085 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1086 | * and returns to caller. | |
1087 | * | |
1088 | * Return codes: | |
1089 | * NULL - Error | |
1090 | * Pointer to lpfc_scsi_buf - Success | |
1091 | **/ | |
1092 | static struct lpfc_scsi_buf* | |
1093 | lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1094 | { | |
1151e3ec | 1095 | struct lpfc_scsi_buf *lpfc_cmd ; |
19ca7609 JS |
1096 | unsigned long iflag = 0; |
1097 | int found = 0; | |
1098 | ||
1099 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
1151e3ec JS |
1100 | list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list, |
1101 | list) { | |
19ca7609 | 1102 | if (lpfc_test_rrq_active(phba, ndlp, |
ee0f4fe1 | 1103 | lpfc_cmd->cur_iocbq.sli4_lxritag)) |
1151e3ec JS |
1104 | continue; |
1105 | list_del(&lpfc_cmd->list); | |
19ca7609 JS |
1106 | found = 1; |
1107 | lpfc_cmd->seg_cnt = 0; | |
1108 | lpfc_cmd->nonsg_phys = 0; | |
1109 | lpfc_cmd->prot_seg_cnt = 0; | |
1151e3ec | 1110 | break; |
19ca7609 | 1111 | } |
1151e3ec JS |
1112 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, |
1113 | iflag); | |
1114 | if (!found) | |
1115 | return NULL; | |
1116 | else | |
1117 | return lpfc_cmd; | |
19ca7609 JS |
1118 | } |
1119 | /** | |
1120 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1121 | * @phba: The HBA for which this call is being executed. | |
1122 | * | |
1123 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1124 | * and returns to caller. | |
1125 | * | |
1126 | * Return codes: | |
1127 | * NULL - Error | |
1128 | * Pointer to lpfc_scsi_buf - Success | |
1129 | **/ | |
1130 | static struct lpfc_scsi_buf* | |
1131 | lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1132 | { | |
1133 | return phba->lpfc_get_scsi_buf(phba, ndlp); | |
1134 | } | |
dea3101e | 1135 | |
9bad7671 | 1136 | /** |
3772a991 | 1137 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
1138 | * @phba: The Hba for which this call is being executed. |
1139 | * @psb: The scsi buffer which is being released. | |
1140 | * | |
1141 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1142 | * lpfc_scsi_buf_list list. | |
1143 | **/ | |
0bd4ca25 | 1144 | static void |
3772a991 | 1145 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 1146 | { |
875fbdfe | 1147 | unsigned long iflag = 0; |
dea3101e | 1148 | |
875fbdfe | 1149 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 1150 | psb->pCmd = NULL; |
dea3101e | 1151 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 1152 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e | 1153 | } |
1154 | ||
da0436e9 JS |
1155 | /** |
1156 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
1157 | * @phba: The Hba for which this call is being executed. | |
1158 | * @psb: The scsi buffer which is being released. | |
1159 | * | |
1160 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1161 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
1162 | * and cannot be reused for at least RA_TOV amount of time if it was | |
1163 | * aborted. | |
1164 | **/ | |
1165 | static void | |
1166 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1167 | { | |
1168 | unsigned long iflag = 0; | |
1169 | ||
341af102 | 1170 | if (psb->exch_busy) { |
da0436e9 JS |
1171 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, |
1172 | iflag); | |
1173 | psb->pCmd = NULL; | |
1174 | list_add_tail(&psb->list, | |
1175 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
1176 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
1177 | iflag); | |
1178 | } else { | |
1179 | ||
1180 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
1181 | psb->pCmd = NULL; | |
1182 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); | |
1183 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); | |
1184 | } | |
1185 | } | |
1186 | ||
9bad7671 | 1187 | /** |
3772a991 JS |
1188 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
1189 | * @phba: The Hba for which this call is being executed. | |
1190 | * @psb: The scsi buffer which is being released. | |
1191 | * | |
1192 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1193 | * lpfc_scsi_buf_list list. | |
1194 | **/ | |
1195 | static void | |
1196 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1197 | { | |
1198 | ||
1199 | phba->lpfc_release_scsi_buf(phba, psb); | |
1200 | } | |
1201 | ||
1202 | /** | |
1203 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
1204 | * @phba: The Hba for which this call is being executed. |
1205 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1206 | * | |
1207 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
1208 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
1209 | * through sg elements and format the bdea. This routine also initializes all | |
1210 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
1211 | * |
1212 | * Return codes: | |
1213 | * 1 - Error | |
1214 | * 0 - Success | |
1215 | **/ | |
dea3101e | 1216 | static int |
3772a991 | 1217 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 1218 | { |
1219 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1220 | struct scatterlist *sgel = NULL; | |
1221 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1222 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
0f65ff68 | 1223 | struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; |
dea3101e | 1224 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
34b02dcd | 1225 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1226 | dma_addr_t physaddr; |
34b02dcd | 1227 | uint32_t num_bde = 0; |
a0b4f78f | 1228 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 1229 | |
1230 | /* | |
1231 | * There are three possibilities here - use scatter-gather segment, use | |
1232 | * the single mapping, or neither. Start the lpfc command prep by | |
1233 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1234 | * data bde entry. | |
1235 | */ | |
1236 | bpl += 2; | |
c59fd9eb | 1237 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 1238 | /* |
1239 | * The driver stores the segment count returned from pci_map_sg | |
1240 | * because this a count of dma-mappings used to map the use_sg | |
1241 | * pages. They are not guaranteed to be the same for those | |
1242 | * architectures that implement an IOMMU. | |
1243 | */ | |
dea3101e | 1244 | |
c59fd9eb FT |
1245 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1246 | scsi_sg_count(scsi_cmnd), datadir); | |
1247 | if (unlikely(!nseg)) | |
1248 | return 1; | |
1249 | ||
a0b4f78f | 1250 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1251 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1252 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1253 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1254 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1255 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1256 | lpfc_cmd->seg_cnt); |
a0b4f78f | 1257 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 1258 | return 1; |
1259 | } | |
1260 | ||
1261 | /* | |
1262 | * The driver established a maximum scatter-gather segment count | |
1263 | * during probe that limits the number of sg elements in any | |
1264 | * single scsi command. Just run through the seg_cnt and format | |
1265 | * the bde's. | |
34b02dcd JS |
1266 | * When using SLI-3 the driver will try to fit all the BDEs into |
1267 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1268 | * does for SLI-2 mode. | |
dea3101e | 1269 | */ |
34b02dcd | 1270 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1271 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1272 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1273 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
0f65ff68 | 1274 | !(iocbq->iocb_flag & DSS_SECURITY_OP) && |
34b02dcd JS |
1275 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1276 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1277 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1278 | data_bde->addrLow = putPaddrLow(physaddr); | |
1279 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1280 | data_bde++; | |
1281 | } else { | |
1282 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1283 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1284 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1285 | bpl->addrLow = | |
1286 | le32_to_cpu(putPaddrLow(physaddr)); | |
1287 | bpl->addrHigh = | |
1288 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1289 | bpl++; | |
1290 | } | |
dea3101e | 1291 | } |
c59fd9eb | 1292 | } |
dea3101e | 1293 | |
1294 | /* | |
1295 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1296 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1297 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1298 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1299 | */ |
e2a0a9d6 | 1300 | if (phba->sli_rev == 3 && |
0f65ff68 JS |
1301 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
1302 | !(iocbq->iocb_flag & DSS_SECURITY_OP)) { | |
34b02dcd JS |
1303 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1304 | /* | |
1305 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1306 | * This I/O has more than 3 BDE so the 1st data bde will | |
1307 | * be a BPL that is filled in here. | |
1308 | */ | |
1309 | physaddr = lpfc_cmd->dma_handle; | |
1310 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1311 | data_bde->tus.f.bdeSize = (num_bde * | |
1312 | sizeof(struct ulp_bde64)); | |
1313 | physaddr += (sizeof(struct fcp_cmnd) + | |
1314 | sizeof(struct fcp_rsp) + | |
1315 | (2 * sizeof(struct ulp_bde64))); | |
1316 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1317 | data_bde->addrLow = putPaddrLow(physaddr); | |
25985edc | 1318 | /* ebde count includes the response bde and data bpl */ |
34b02dcd JS |
1319 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; |
1320 | } else { | |
25985edc | 1321 | /* ebde count includes the response bde and data bdes */ |
34b02dcd JS |
1322 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
1323 | } | |
1324 | } else { | |
1325 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1326 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
0f65ff68 | 1327 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
34b02dcd | 1328 | } |
09372820 | 1329 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1330 | |
1331 | /* | |
1332 | * Due to difference in data length between DIF/non-DIF paths, | |
1333 | * we need to set word 4 of IOCB here | |
1334 | */ | |
a257bf90 | 1335 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1336 | return 0; |
1337 | } | |
1338 | ||
f9bb2da1 JS |
1339 | static inline unsigned |
1340 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
1341 | { | |
1342 | return sc->device->sector_size; | |
1343 | } | |
1344 | ||
1345 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
acd6859b | 1346 | |
9a6b09c0 JS |
1347 | /* Return if if error injection is detected by Initiator */ |
1348 | #define BG_ERR_INIT 0x1 | |
1349 | /* Return if if error injection is detected by Target */ | |
1350 | #define BG_ERR_TGT 0x2 | |
1351 | /* Return if if swapping CSUM<-->CRC is required for error injection */ | |
1352 | #define BG_ERR_SWAP 0x10 | |
1353 | /* Return if disabling Guard/Ref/App checking is required for error injection */ | |
1354 | #define BG_ERR_CHECK 0x20 | |
acd6859b JS |
1355 | |
1356 | /** | |
1357 | * lpfc_bg_err_inject - Determine if we should inject an error | |
1358 | * @phba: The Hba for which this call is being executed. | |
f9bb2da1 JS |
1359 | * @sc: The SCSI command to examine |
1360 | * @reftag: (out) BlockGuard reference tag for transmitted data | |
1361 | * @apptag: (out) BlockGuard application tag for transmitted data | |
1362 | * @new_guard (in) Value to replace CRC with if needed | |
1363 | * | |
9a6b09c0 | 1364 | * Returns BG_ERR_* bit mask or 0 if request ignored |
acd6859b | 1365 | **/ |
f9bb2da1 JS |
1366 | static int |
1367 | lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1368 | uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) | |
1369 | { | |
1370 | struct scatterlist *sgpe; /* s/g prot entry */ | |
1371 | struct scatterlist *sgde; /* s/g data entry */ | |
9a6b09c0 | 1372 | struct lpfc_scsi_buf *lpfc_cmd = NULL; |
acd6859b | 1373 | struct scsi_dif_tuple *src = NULL; |
4ac9b226 JS |
1374 | struct lpfc_nodelist *ndlp; |
1375 | struct lpfc_rport_data *rdata; | |
f9bb2da1 JS |
1376 | uint32_t op = scsi_get_prot_op(sc); |
1377 | uint32_t blksize; | |
1378 | uint32_t numblks; | |
1379 | sector_t lba; | |
1380 | int rc = 0; | |
acd6859b | 1381 | int blockoff = 0; |
f9bb2da1 JS |
1382 | |
1383 | if (op == SCSI_PROT_NORMAL) | |
1384 | return 0; | |
1385 | ||
acd6859b JS |
1386 | sgpe = scsi_prot_sglist(sc); |
1387 | sgde = scsi_sglist(sc); | |
f9bb2da1 | 1388 | lba = scsi_get_lba(sc); |
4ac9b226 JS |
1389 | |
1390 | /* First check if we need to match the LBA */ | |
f9bb2da1 JS |
1391 | if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { |
1392 | blksize = lpfc_cmd_blksize(sc); | |
1393 | numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; | |
1394 | ||
1395 | /* Make sure we have the right LBA if one is specified */ | |
1396 | if ((phba->lpfc_injerr_lba < lba) || | |
1397 | (phba->lpfc_injerr_lba >= (lba + numblks))) | |
1398 | return 0; | |
acd6859b JS |
1399 | if (sgpe) { |
1400 | blockoff = phba->lpfc_injerr_lba - lba; | |
1401 | numblks = sg_dma_len(sgpe) / | |
1402 | sizeof(struct scsi_dif_tuple); | |
1403 | if (numblks < blockoff) | |
1404 | blockoff = numblks; | |
acd6859b | 1405 | } |
f9bb2da1 JS |
1406 | } |
1407 | ||
4ac9b226 JS |
1408 | /* Next check if we need to match the remote NPortID or WWPN */ |
1409 | rdata = sc->device->hostdata; | |
1410 | if (rdata && rdata->pnode) { | |
1411 | ndlp = rdata->pnode; | |
1412 | ||
1413 | /* Make sure we have the right NPortID if one is specified */ | |
1414 | if (phba->lpfc_injerr_nportid && | |
1415 | (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) | |
1416 | return 0; | |
1417 | ||
1418 | /* | |
1419 | * Make sure we have the right WWPN if one is specified. | |
1420 | * wwn[0] should be a non-zero NAA in a good WWPN. | |
1421 | */ | |
1422 | if (phba->lpfc_injerr_wwpn.u.wwn[0] && | |
1423 | (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, | |
1424 | sizeof(struct lpfc_name)) != 0)) | |
1425 | return 0; | |
1426 | } | |
1427 | ||
1428 | /* Setup a ptr to the protection data if the SCSI host provides it */ | |
1429 | if (sgpe) { | |
1430 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); | |
1431 | src += blockoff; | |
1432 | lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble; | |
1433 | } | |
1434 | ||
f9bb2da1 JS |
1435 | /* Should we change the Reference Tag */ |
1436 | if (reftag) { | |
acd6859b JS |
1437 | if (phba->lpfc_injerr_wref_cnt) { |
1438 | switch (op) { | |
1439 | case SCSI_PROT_WRITE_PASS: | |
9a6b09c0 JS |
1440 | if (src) { |
1441 | /* | |
1442 | * For WRITE_PASS, force the error | |
1443 | * to be sent on the wire. It should | |
1444 | * be detected by the Target. | |
1445 | * If blockoff != 0 error will be | |
1446 | * inserted in middle of the IO. | |
1447 | */ | |
acd6859b JS |
1448 | |
1449 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1450 | "9076 BLKGRD: Injecting reftag error: " | |
1451 | "write lba x%lx + x%x oldrefTag x%x\n", | |
1452 | (unsigned long)lba, blockoff, | |
9a6b09c0 | 1453 | be32_to_cpu(src->ref_tag)); |
f9bb2da1 | 1454 | |
acd6859b | 1455 | /* |
9a6b09c0 JS |
1456 | * Save the old ref_tag so we can |
1457 | * restore it on completion. | |
acd6859b | 1458 | */ |
9a6b09c0 JS |
1459 | if (lpfc_cmd) { |
1460 | lpfc_cmd->prot_data_type = | |
1461 | LPFC_INJERR_REFTAG; | |
1462 | lpfc_cmd->prot_data_segment = | |
1463 | src; | |
1464 | lpfc_cmd->prot_data = | |
1465 | src->ref_tag; | |
1466 | } | |
1467 | src->ref_tag = cpu_to_be32(0xDEADBEEF); | |
acd6859b | 1468 | phba->lpfc_injerr_wref_cnt--; |
4ac9b226 JS |
1469 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1470 | phba->lpfc_injerr_nportid = 0; | |
1471 | phba->lpfc_injerr_lba = | |
1472 | LPFC_INJERR_LBA_OFF; | |
1473 | memset(&phba->lpfc_injerr_wwpn, | |
1474 | 0, sizeof(struct lpfc_name)); | |
1475 | } | |
9a6b09c0 JS |
1476 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
1477 | ||
acd6859b JS |
1478 | break; |
1479 | } | |
1480 | /* Drop thru */ | |
9a6b09c0 | 1481 | case SCSI_PROT_WRITE_INSERT: |
acd6859b | 1482 | /* |
9a6b09c0 JS |
1483 | * For WRITE_INSERT, force the error |
1484 | * to be sent on the wire. It should be | |
1485 | * detected by the Target. | |
acd6859b | 1486 | */ |
9a6b09c0 | 1487 | /* DEADBEEF will be the reftag on the wire */ |
acd6859b JS |
1488 | *reftag = 0xDEADBEEF; |
1489 | phba->lpfc_injerr_wref_cnt--; | |
4ac9b226 JS |
1490 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1491 | phba->lpfc_injerr_nportid = 0; | |
1492 | phba->lpfc_injerr_lba = | |
1493 | LPFC_INJERR_LBA_OFF; | |
1494 | memset(&phba->lpfc_injerr_wwpn, | |
1495 | 0, sizeof(struct lpfc_name)); | |
1496 | } | |
9a6b09c0 | 1497 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
acd6859b JS |
1498 | |
1499 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1500 | "9078 BLKGRD: Injecting reftag error: " |
acd6859b JS |
1501 | "write lba x%lx\n", (unsigned long)lba); |
1502 | break; | |
9a6b09c0 | 1503 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1504 | /* |
9a6b09c0 JS |
1505 | * For WRITE_STRIP and WRITE_PASS, |
1506 | * force the error on data | |
1507 | * being copied from SLI-Host to SLI-Port. | |
acd6859b | 1508 | */ |
f9bb2da1 JS |
1509 | *reftag = 0xDEADBEEF; |
1510 | phba->lpfc_injerr_wref_cnt--; | |
4ac9b226 JS |
1511 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1512 | phba->lpfc_injerr_nportid = 0; | |
1513 | phba->lpfc_injerr_lba = | |
1514 | LPFC_INJERR_LBA_OFF; | |
1515 | memset(&phba->lpfc_injerr_wwpn, | |
1516 | 0, sizeof(struct lpfc_name)); | |
1517 | } | |
9a6b09c0 | 1518 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1519 | |
1520 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1521 | "9077 BLKGRD: Injecting reftag error: " |
f9bb2da1 | 1522 | "write lba x%lx\n", (unsigned long)lba); |
acd6859b | 1523 | break; |
f9bb2da1 | 1524 | } |
acd6859b JS |
1525 | } |
1526 | if (phba->lpfc_injerr_rref_cnt) { | |
1527 | switch (op) { | |
1528 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1529 | case SCSI_PROT_READ_STRIP: |
1530 | case SCSI_PROT_READ_PASS: | |
1531 | /* | |
1532 | * For READ_STRIP and READ_PASS, force the | |
1533 | * error on data being read off the wire. It | |
1534 | * should force an IO error to the driver. | |
1535 | */ | |
f9bb2da1 JS |
1536 | *reftag = 0xDEADBEEF; |
1537 | phba->lpfc_injerr_rref_cnt--; | |
4ac9b226 JS |
1538 | if (phba->lpfc_injerr_rref_cnt == 0) { |
1539 | phba->lpfc_injerr_nportid = 0; | |
1540 | phba->lpfc_injerr_lba = | |
1541 | LPFC_INJERR_LBA_OFF; | |
1542 | memset(&phba->lpfc_injerr_wwpn, | |
1543 | 0, sizeof(struct lpfc_name)); | |
1544 | } | |
acd6859b | 1545 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1546 | |
1547 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
acd6859b | 1548 | "9079 BLKGRD: Injecting reftag error: " |
f9bb2da1 | 1549 | "read lba x%lx\n", (unsigned long)lba); |
acd6859b | 1550 | break; |
f9bb2da1 JS |
1551 | } |
1552 | } | |
1553 | } | |
1554 | ||
1555 | /* Should we change the Application Tag */ | |
1556 | if (apptag) { | |
acd6859b JS |
1557 | if (phba->lpfc_injerr_wapp_cnt) { |
1558 | switch (op) { | |
1559 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1560 | if (src) { |
9a6b09c0 JS |
1561 | /* |
1562 | * For WRITE_PASS, force the error | |
1563 | * to be sent on the wire. It should | |
1564 | * be detected by the Target. | |
1565 | * If blockoff != 0 error will be | |
1566 | * inserted in middle of the IO. | |
1567 | */ | |
1568 | ||
acd6859b JS |
1569 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1570 | "9080 BLKGRD: Injecting apptag error: " | |
1571 | "write lba x%lx + x%x oldappTag x%x\n", | |
1572 | (unsigned long)lba, blockoff, | |
9a6b09c0 | 1573 | be16_to_cpu(src->app_tag)); |
acd6859b JS |
1574 | |
1575 | /* | |
9a6b09c0 JS |
1576 | * Save the old app_tag so we can |
1577 | * restore it on completion. | |
acd6859b | 1578 | */ |
9a6b09c0 JS |
1579 | if (lpfc_cmd) { |
1580 | lpfc_cmd->prot_data_type = | |
1581 | LPFC_INJERR_APPTAG; | |
1582 | lpfc_cmd->prot_data_segment = | |
1583 | src; | |
1584 | lpfc_cmd->prot_data = | |
1585 | src->app_tag; | |
1586 | } | |
1587 | src->app_tag = cpu_to_be16(0xDEAD); | |
acd6859b | 1588 | phba->lpfc_injerr_wapp_cnt--; |
4ac9b226 JS |
1589 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1590 | phba->lpfc_injerr_nportid = 0; | |
1591 | phba->lpfc_injerr_lba = | |
1592 | LPFC_INJERR_LBA_OFF; | |
1593 | memset(&phba->lpfc_injerr_wwpn, | |
1594 | 0, sizeof(struct lpfc_name)); | |
1595 | } | |
9a6b09c0 | 1596 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
acd6859b JS |
1597 | break; |
1598 | } | |
1599 | /* Drop thru */ | |
9a6b09c0 | 1600 | case SCSI_PROT_WRITE_INSERT: |
acd6859b | 1601 | /* |
9a6b09c0 JS |
1602 | * For WRITE_INSERT, force the |
1603 | * error to be sent on the wire. It should be | |
1604 | * detected by the Target. | |
acd6859b | 1605 | */ |
9a6b09c0 | 1606 | /* DEAD will be the apptag on the wire */ |
acd6859b JS |
1607 | *apptag = 0xDEAD; |
1608 | phba->lpfc_injerr_wapp_cnt--; | |
4ac9b226 JS |
1609 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1610 | phba->lpfc_injerr_nportid = 0; | |
1611 | phba->lpfc_injerr_lba = | |
1612 | LPFC_INJERR_LBA_OFF; | |
1613 | memset(&phba->lpfc_injerr_wwpn, | |
1614 | 0, sizeof(struct lpfc_name)); | |
1615 | } | |
9a6b09c0 | 1616 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
f9bb2da1 | 1617 | |
acd6859b | 1618 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
9a6b09c0 | 1619 | "0813 BLKGRD: Injecting apptag error: " |
acd6859b JS |
1620 | "write lba x%lx\n", (unsigned long)lba); |
1621 | break; | |
9a6b09c0 | 1622 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1623 | /* |
9a6b09c0 JS |
1624 | * For WRITE_STRIP and WRITE_PASS, |
1625 | * force the error on data | |
1626 | * being copied from SLI-Host to SLI-Port. | |
acd6859b | 1627 | */ |
f9bb2da1 JS |
1628 | *apptag = 0xDEAD; |
1629 | phba->lpfc_injerr_wapp_cnt--; | |
4ac9b226 JS |
1630 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1631 | phba->lpfc_injerr_nportid = 0; | |
1632 | phba->lpfc_injerr_lba = | |
1633 | LPFC_INJERR_LBA_OFF; | |
1634 | memset(&phba->lpfc_injerr_wwpn, | |
1635 | 0, sizeof(struct lpfc_name)); | |
1636 | } | |
9a6b09c0 | 1637 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1638 | |
1639 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1640 | "0812 BLKGRD: Injecting apptag error: " |
f9bb2da1 | 1641 | "write lba x%lx\n", (unsigned long)lba); |
acd6859b | 1642 | break; |
f9bb2da1 | 1643 | } |
acd6859b JS |
1644 | } |
1645 | if (phba->lpfc_injerr_rapp_cnt) { | |
1646 | switch (op) { | |
1647 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1648 | case SCSI_PROT_READ_STRIP: |
1649 | case SCSI_PROT_READ_PASS: | |
1650 | /* | |
1651 | * For READ_STRIP and READ_PASS, force the | |
1652 | * error on data being read off the wire. It | |
1653 | * should force an IO error to the driver. | |
1654 | */ | |
f9bb2da1 JS |
1655 | *apptag = 0xDEAD; |
1656 | phba->lpfc_injerr_rapp_cnt--; | |
4ac9b226 JS |
1657 | if (phba->lpfc_injerr_rapp_cnt == 0) { |
1658 | phba->lpfc_injerr_nportid = 0; | |
1659 | phba->lpfc_injerr_lba = | |
1660 | LPFC_INJERR_LBA_OFF; | |
1661 | memset(&phba->lpfc_injerr_wwpn, | |
1662 | 0, sizeof(struct lpfc_name)); | |
1663 | } | |
acd6859b | 1664 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1665 | |
1666 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
acd6859b | 1667 | "0814 BLKGRD: Injecting apptag error: " |
f9bb2da1 | 1668 | "read lba x%lx\n", (unsigned long)lba); |
acd6859b | 1669 | break; |
f9bb2da1 JS |
1670 | } |
1671 | } | |
1672 | } | |
1673 | ||
acd6859b | 1674 | |
f9bb2da1 | 1675 | /* Should we change the Guard Tag */ |
acd6859b JS |
1676 | if (new_guard) { |
1677 | if (phba->lpfc_injerr_wgrd_cnt) { | |
1678 | switch (op) { | |
1679 | case SCSI_PROT_WRITE_PASS: | |
9a6b09c0 | 1680 | rc = BG_ERR_CHECK; |
acd6859b | 1681 | /* Drop thru */ |
9a6b09c0 JS |
1682 | |
1683 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1684 | /* |
9a6b09c0 JS |
1685 | * For WRITE_INSERT, force the |
1686 | * error to be sent on the wire. It should be | |
1687 | * detected by the Target. | |
acd6859b JS |
1688 | */ |
1689 | phba->lpfc_injerr_wgrd_cnt--; | |
4ac9b226 JS |
1690 | if (phba->lpfc_injerr_wgrd_cnt == 0) { |
1691 | phba->lpfc_injerr_nportid = 0; | |
1692 | phba->lpfc_injerr_lba = | |
1693 | LPFC_INJERR_LBA_OFF; | |
1694 | memset(&phba->lpfc_injerr_wwpn, | |
1695 | 0, sizeof(struct lpfc_name)); | |
1696 | } | |
f9bb2da1 | 1697 | |
9a6b09c0 | 1698 | rc |= BG_ERR_TGT | BG_ERR_SWAP; |
acd6859b | 1699 | /* Signals the caller to swap CRC->CSUM */ |
f9bb2da1 | 1700 | |
acd6859b | 1701 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
9a6b09c0 | 1702 | "0817 BLKGRD: Injecting guard error: " |
acd6859b JS |
1703 | "write lba x%lx\n", (unsigned long)lba); |
1704 | break; | |
9a6b09c0 | 1705 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1706 | /* |
9a6b09c0 JS |
1707 | * For WRITE_STRIP and WRITE_PASS, |
1708 | * force the error on data | |
1709 | * being copied from SLI-Host to SLI-Port. | |
acd6859b JS |
1710 | */ |
1711 | phba->lpfc_injerr_wgrd_cnt--; | |
4ac9b226 JS |
1712 | if (phba->lpfc_injerr_wgrd_cnt == 0) { |
1713 | phba->lpfc_injerr_nportid = 0; | |
1714 | phba->lpfc_injerr_lba = | |
1715 | LPFC_INJERR_LBA_OFF; | |
1716 | memset(&phba->lpfc_injerr_wwpn, | |
1717 | 0, sizeof(struct lpfc_name)); | |
1718 | } | |
f9bb2da1 | 1719 | |
9a6b09c0 | 1720 | rc = BG_ERR_INIT | BG_ERR_SWAP; |
acd6859b JS |
1721 | /* Signals the caller to swap CRC->CSUM */ |
1722 | ||
1723 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1724 | "0816 BLKGRD: Injecting guard error: " |
acd6859b JS |
1725 | "write lba x%lx\n", (unsigned long)lba); |
1726 | break; | |
1727 | } | |
1728 | } | |
1729 | if (phba->lpfc_injerr_rgrd_cnt) { | |
1730 | switch (op) { | |
1731 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1732 | case SCSI_PROT_READ_STRIP: |
1733 | case SCSI_PROT_READ_PASS: | |
1734 | /* | |
1735 | * For READ_STRIP and READ_PASS, force the | |
1736 | * error on data being read off the wire. It | |
1737 | * should force an IO error to the driver. | |
1738 | */ | |
acd6859b | 1739 | phba->lpfc_injerr_rgrd_cnt--; |
4ac9b226 JS |
1740 | if (phba->lpfc_injerr_rgrd_cnt == 0) { |
1741 | phba->lpfc_injerr_nportid = 0; | |
1742 | phba->lpfc_injerr_lba = | |
1743 | LPFC_INJERR_LBA_OFF; | |
1744 | memset(&phba->lpfc_injerr_wwpn, | |
1745 | 0, sizeof(struct lpfc_name)); | |
1746 | } | |
acd6859b | 1747 | |
9a6b09c0 | 1748 | rc = BG_ERR_INIT | BG_ERR_SWAP; |
acd6859b JS |
1749 | /* Signals the caller to swap CRC->CSUM */ |
1750 | ||
1751 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1752 | "0818 BLKGRD: Injecting guard error: " | |
1753 | "read lba x%lx\n", (unsigned long)lba); | |
1754 | } | |
f9bb2da1 JS |
1755 | } |
1756 | } | |
acd6859b | 1757 | |
f9bb2da1 JS |
1758 | return rc; |
1759 | } | |
1760 | #endif | |
1761 | ||
acd6859b JS |
1762 | /** |
1763 | * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with | |
1764 | * the specified SCSI command. | |
1765 | * @phba: The Hba for which this call is being executed. | |
6c8eea54 JS |
1766 | * @sc: The SCSI command to examine |
1767 | * @txopt: (out) BlockGuard operation for transmitted data | |
1768 | * @rxopt: (out) BlockGuard operation for received data | |
1769 | * | |
1770 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1771 | * | |
acd6859b | 1772 | **/ |
e2a0a9d6 | 1773 | static int |
6c8eea54 JS |
1774 | lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, |
1775 | uint8_t *txop, uint8_t *rxop) | |
e2a0a9d6 JS |
1776 | { |
1777 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
6c8eea54 | 1778 | uint8_t ret = 0; |
e2a0a9d6 JS |
1779 | |
1780 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
1781 | switch (scsi_get_prot_op(sc)) { | |
1782 | case SCSI_PROT_READ_INSERT: | |
1783 | case SCSI_PROT_WRITE_STRIP: | |
6c8eea54 | 1784 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; |
4ac9b226 | 1785 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
e2a0a9d6 JS |
1786 | break; |
1787 | ||
1788 | case SCSI_PROT_READ_STRIP: | |
1789 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 | 1790 | *rxop = BG_OP_IN_CRC_OUT_NODIF; |
4ac9b226 | 1791 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
e2a0a9d6 JS |
1792 | break; |
1793 | ||
c6af4042 MP |
1794 | case SCSI_PROT_READ_PASS: |
1795 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 | 1796 | *rxop = BG_OP_IN_CRC_OUT_CSUM; |
4ac9b226 | 1797 | *txop = BG_OP_IN_CSUM_OUT_CRC; |
e2a0a9d6 JS |
1798 | break; |
1799 | ||
e2a0a9d6 JS |
1800 | case SCSI_PROT_NORMAL: |
1801 | default: | |
6a9c52cf | 1802 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1803 | "9063 BLKGRD: Bad op/guard:%d/IP combination\n", |
1804 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1805 | ret = 1; |
e2a0a9d6 JS |
1806 | break; |
1807 | ||
1808 | } | |
7c56b9fd | 1809 | } else { |
e2a0a9d6 JS |
1810 | switch (scsi_get_prot_op(sc)) { |
1811 | case SCSI_PROT_READ_STRIP: | |
1812 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 | 1813 | *rxop = BG_OP_IN_CRC_OUT_NODIF; |
4ac9b226 | 1814 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
e2a0a9d6 JS |
1815 | break; |
1816 | ||
1817 | case SCSI_PROT_READ_PASS: | |
1818 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 | 1819 | *rxop = BG_OP_IN_CRC_OUT_CRC; |
4ac9b226 | 1820 | *txop = BG_OP_IN_CRC_OUT_CRC; |
e2a0a9d6 JS |
1821 | break; |
1822 | ||
e2a0a9d6 JS |
1823 | case SCSI_PROT_READ_INSERT: |
1824 | case SCSI_PROT_WRITE_STRIP: | |
7c56b9fd | 1825 | *rxop = BG_OP_IN_NODIF_OUT_CRC; |
4ac9b226 | 1826 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
7c56b9fd JS |
1827 | break; |
1828 | ||
e2a0a9d6 JS |
1829 | case SCSI_PROT_NORMAL: |
1830 | default: | |
6a9c52cf | 1831 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1832 | "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", |
1833 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1834 | ret = 1; |
e2a0a9d6 JS |
1835 | break; |
1836 | } | |
e2a0a9d6 JS |
1837 | } |
1838 | ||
6c8eea54 | 1839 | return ret; |
e2a0a9d6 JS |
1840 | } |
1841 | ||
acd6859b JS |
1842 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1843 | /** | |
1844 | * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with | |
1845 | * the specified SCSI command in order to force a guard tag error. | |
1846 | * @phba: The Hba for which this call is being executed. | |
1847 | * @sc: The SCSI command to examine | |
1848 | * @txopt: (out) BlockGuard operation for transmitted data | |
1849 | * @rxopt: (out) BlockGuard operation for received data | |
1850 | * | |
1851 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1852 | * | |
1853 | **/ | |
1854 | static int | |
1855 | lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1856 | uint8_t *txop, uint8_t *rxop) | |
1857 | { | |
1858 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
1859 | uint8_t ret = 0; | |
1860 | ||
1861 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
1862 | switch (scsi_get_prot_op(sc)) { | |
1863 | case SCSI_PROT_READ_INSERT: | |
1864 | case SCSI_PROT_WRITE_STRIP: | |
acd6859b | 1865 | *rxop = BG_OP_IN_NODIF_OUT_CRC; |
4ac9b226 | 1866 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
acd6859b JS |
1867 | break; |
1868 | ||
1869 | case SCSI_PROT_READ_STRIP: | |
1870 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1871 | *rxop = BG_OP_IN_CSUM_OUT_NODIF; |
4ac9b226 | 1872 | *txop = BG_OP_IN_NODIF_OUT_CSUM; |
acd6859b JS |
1873 | break; |
1874 | ||
1875 | case SCSI_PROT_READ_PASS: | |
1876 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1877 | *rxop = BG_OP_IN_CSUM_OUT_CRC; |
9a6b09c0 | 1878 | *txop = BG_OP_IN_CRC_OUT_CSUM; |
acd6859b JS |
1879 | break; |
1880 | ||
1881 | case SCSI_PROT_NORMAL: | |
1882 | default: | |
1883 | break; | |
1884 | ||
1885 | } | |
1886 | } else { | |
1887 | switch (scsi_get_prot_op(sc)) { | |
1888 | case SCSI_PROT_READ_STRIP: | |
1889 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1890 | *rxop = BG_OP_IN_CSUM_OUT_NODIF; |
4ac9b226 | 1891 | *txop = BG_OP_IN_NODIF_OUT_CSUM; |
acd6859b JS |
1892 | break; |
1893 | ||
1894 | case SCSI_PROT_READ_PASS: | |
1895 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1896 | *rxop = BG_OP_IN_CSUM_OUT_CSUM; |
9a6b09c0 | 1897 | *txop = BG_OP_IN_CSUM_OUT_CSUM; |
acd6859b JS |
1898 | break; |
1899 | ||
1900 | case SCSI_PROT_READ_INSERT: | |
1901 | case SCSI_PROT_WRITE_STRIP: | |
acd6859b | 1902 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; |
4ac9b226 | 1903 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
acd6859b JS |
1904 | break; |
1905 | ||
1906 | case SCSI_PROT_NORMAL: | |
1907 | default: | |
1908 | break; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | return ret; | |
1913 | } | |
1914 | #endif | |
1915 | ||
1916 | /** | |
1917 | * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data | |
1918 | * @phba: The Hba for which this call is being executed. | |
1919 | * @sc: pointer to scsi command we're working on | |
1920 | * @bpl: pointer to buffer list for protection groups | |
1921 | * @datacnt: number of segments of data that have been dma mapped | |
1922 | * | |
1923 | * This function sets up BPL buffer list for protection groups of | |
e2a0a9d6 JS |
1924 | * type LPFC_PG_TYPE_NO_DIF |
1925 | * | |
1926 | * This is usually used when the HBA is instructed to generate | |
1927 | * DIFs and insert them into data stream (or strip DIF from | |
1928 | * incoming data stream) | |
1929 | * | |
1930 | * The buffer list consists of just one protection group described | |
1931 | * below: | |
1932 | * +-------------------------+ | |
6c8eea54 JS |
1933 | * start of prot group --> | PDE_5 | |
1934 | * +-------------------------+ | |
1935 | * | PDE_6 | | |
e2a0a9d6 JS |
1936 | * +-------------------------+ |
1937 | * | Data BDE | | |
1938 | * +-------------------------+ | |
1939 | * |more Data BDE's ... (opt)| | |
1940 | * +-------------------------+ | |
1941 | * | |
e2a0a9d6 JS |
1942 | * |
1943 | * Note: Data s/g buffers have been dma mapped | |
acd6859b JS |
1944 | * |
1945 | * Returns the number of BDEs added to the BPL. | |
1946 | **/ | |
e2a0a9d6 JS |
1947 | static int |
1948 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1949 | struct ulp_bde64 *bpl, int datasegcnt) | |
1950 | { | |
1951 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
6c8eea54 JS |
1952 | struct lpfc_pde5 *pde5 = NULL; |
1953 | struct lpfc_pde6 *pde6 = NULL; | |
e2a0a9d6 | 1954 | dma_addr_t physaddr; |
6c8eea54 | 1955 | int i = 0, num_bde = 0, status; |
e2a0a9d6 | 1956 | int datadir = sc->sc_data_direction; |
0829a19a | 1957 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 1958 | uint32_t rc; |
0829a19a | 1959 | #endif |
acd6859b | 1960 | uint32_t checking = 1; |
e2a0a9d6 | 1961 | uint32_t reftag; |
7c56b9fd | 1962 | unsigned blksize; |
6c8eea54 | 1963 | uint8_t txop, rxop; |
e2a0a9d6 | 1964 | |
6c8eea54 JS |
1965 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
1966 | if (status) | |
e2a0a9d6 JS |
1967 | goto out; |
1968 | ||
6c8eea54 | 1969 | /* extract some info from the scsi command for pde*/ |
e2a0a9d6 | 1970 | blksize = lpfc_cmd_blksize(sc); |
acd6859b | 1971 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ |
e2a0a9d6 | 1972 | |
f9bb2da1 | 1973 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4ac9b226 | 1974 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 1975 | if (rc) { |
9a6b09c0 | 1976 | if (rc & BG_ERR_SWAP) |
acd6859b | 1977 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 1978 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
1979 | checking = 0; |
1980 | } | |
f9bb2da1 JS |
1981 | #endif |
1982 | ||
6c8eea54 JS |
1983 | /* setup PDE5 with what we have */ |
1984 | pde5 = (struct lpfc_pde5 *) bpl; | |
1985 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
1986 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
6c8eea54 | 1987 | |
bc73905a | 1988 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 | 1989 | pde5->word0 = cpu_to_le32(pde5->word0); |
7c56b9fd | 1990 | pde5->reftag = cpu_to_le32(reftag); |
589a52d6 | 1991 | |
6c8eea54 JS |
1992 | /* advance bpl and increment bde count */ |
1993 | num_bde++; | |
1994 | bpl++; | |
1995 | pde6 = (struct lpfc_pde6 *) bpl; | |
1996 | ||
1997 | /* setup PDE6 with the rest of the info */ | |
1998 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
1999 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
2000 | bf_set(pde6_optx, pde6, txop); | |
2001 | bf_set(pde6_oprx, pde6, rxop); | |
2002 | if (datadir == DMA_FROM_DEVICE) { | |
acd6859b JS |
2003 | bf_set(pde6_ce, pde6, checking); |
2004 | bf_set(pde6_re, pde6, checking); | |
6c8eea54 JS |
2005 | } |
2006 | bf_set(pde6_ai, pde6, 1); | |
7c56b9fd JS |
2007 | bf_set(pde6_ae, pde6, 0); |
2008 | bf_set(pde6_apptagval, pde6, 0); | |
e2a0a9d6 | 2009 | |
bc73905a | 2010 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
2011 | pde6->word0 = cpu_to_le32(pde6->word0); |
2012 | pde6->word1 = cpu_to_le32(pde6->word1); | |
2013 | pde6->word2 = cpu_to_le32(pde6->word2); | |
2014 | ||
6c8eea54 | 2015 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
2016 | num_bde++; |
2017 | bpl++; | |
2018 | ||
2019 | /* assumption: caller has already run dma_map_sg on command data */ | |
2020 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
2021 | physaddr = sg_dma_address(sgde); | |
2022 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
2023 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
2024 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
2025 | if (datadir == DMA_TO_DEVICE) | |
2026 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
2027 | else | |
2028 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
2029 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
2030 | bpl++; | |
2031 | num_bde++; | |
2032 | } | |
2033 | ||
2034 | out: | |
2035 | return num_bde; | |
2036 | } | |
2037 | ||
acd6859b JS |
2038 | /** |
2039 | * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data | |
2040 | * @phba: The Hba for which this call is being executed. | |
2041 | * @sc: pointer to scsi command we're working on | |
2042 | * @bpl: pointer to buffer list for protection groups | |
2043 | * @datacnt: number of segments of data that have been dma mapped | |
2044 | * @protcnt: number of segment of protection data that have been dma mapped | |
2045 | * | |
2046 | * This function sets up BPL buffer list for protection groups of | |
2047 | * type LPFC_PG_TYPE_DIF | |
e2a0a9d6 JS |
2048 | * |
2049 | * This is usually used when DIFs are in their own buffers, | |
2050 | * separate from the data. The HBA can then by instructed | |
2051 | * to place the DIFs in the outgoing stream. For read operations, | |
2052 | * The HBA could extract the DIFs and place it in DIF buffers. | |
2053 | * | |
2054 | * The buffer list for this type consists of one or more of the | |
2055 | * protection groups described below: | |
2056 | * +-------------------------+ | |
6c8eea54 | 2057 | * start of first prot group --> | PDE_5 | |
e2a0a9d6 | 2058 | * +-------------------------+ |
6c8eea54 JS |
2059 | * | PDE_6 | |
2060 | * +-------------------------+ | |
2061 | * | PDE_7 (Prot BDE) | | |
e2a0a9d6 JS |
2062 | * +-------------------------+ |
2063 | * | Data BDE | | |
2064 | * +-------------------------+ | |
2065 | * |more Data BDE's ... (opt)| | |
2066 | * +-------------------------+ | |
6c8eea54 | 2067 | * start of new prot group --> | PDE_5 | |
e2a0a9d6 JS |
2068 | * +-------------------------+ |
2069 | * | ... | | |
2070 | * +-------------------------+ | |
2071 | * | |
e2a0a9d6 JS |
2072 | * Note: It is assumed that both data and protection s/g buffers have been |
2073 | * mapped for DMA | |
acd6859b JS |
2074 | * |
2075 | * Returns the number of BDEs added to the BPL. | |
2076 | **/ | |
e2a0a9d6 JS |
2077 | static int |
2078 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2079 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
2080 | { | |
2081 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2082 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
6c8eea54 JS |
2083 | struct lpfc_pde5 *pde5 = NULL; |
2084 | struct lpfc_pde6 *pde6 = NULL; | |
7f86059a | 2085 | struct lpfc_pde7 *pde7 = NULL; |
e2a0a9d6 JS |
2086 | dma_addr_t dataphysaddr, protphysaddr; |
2087 | unsigned short curr_data = 0, curr_prot = 0; | |
7f86059a JS |
2088 | unsigned int split_offset; |
2089 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
e2a0a9d6 JS |
2090 | unsigned int protgrp_blks, protgrp_bytes; |
2091 | unsigned int remainder, subtotal; | |
6c8eea54 | 2092 | int status; |
e2a0a9d6 JS |
2093 | int datadir = sc->sc_data_direction; |
2094 | unsigned char pgdone = 0, alldone = 0; | |
2095 | unsigned blksize; | |
0829a19a | 2096 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2097 | uint32_t rc; |
0829a19a | 2098 | #endif |
acd6859b | 2099 | uint32_t checking = 1; |
e2a0a9d6 | 2100 | uint32_t reftag; |
6c8eea54 | 2101 | uint8_t txop, rxop; |
e2a0a9d6 JS |
2102 | int num_bde = 0; |
2103 | ||
2104 | sgpe = scsi_prot_sglist(sc); | |
2105 | sgde = scsi_sglist(sc); | |
2106 | ||
2107 | if (!sgpe || !sgde) { | |
2108 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
acd6859b JS |
2109 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", |
2110 | sgpe, sgde); | |
2111 | return 0; | |
2112 | } | |
2113 | ||
2114 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); | |
2115 | if (status) | |
2116 | goto out; | |
2117 | ||
2118 | /* extract some info from the scsi command */ | |
2119 | blksize = lpfc_cmd_blksize(sc); | |
2120 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ | |
2121 | ||
2122 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
4ac9b226 | 2123 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2124 | if (rc) { |
9a6b09c0 | 2125 | if (rc & BG_ERR_SWAP) |
acd6859b | 2126 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2127 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2128 | checking = 0; |
2129 | } | |
2130 | #endif | |
2131 | ||
2132 | split_offset = 0; | |
2133 | do { | |
2134 | /* setup PDE5 with what we have */ | |
2135 | pde5 = (struct lpfc_pde5 *) bpl; | |
2136 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
2137 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
2138 | ||
2139 | /* Endianness conversion if necessary for PDE5 */ | |
2140 | pde5->word0 = cpu_to_le32(pde5->word0); | |
2141 | pde5->reftag = cpu_to_le32(reftag); | |
2142 | ||
2143 | /* advance bpl and increment bde count */ | |
2144 | num_bde++; | |
2145 | bpl++; | |
2146 | pde6 = (struct lpfc_pde6 *) bpl; | |
2147 | ||
2148 | /* setup PDE6 with the rest of the info */ | |
2149 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
2150 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
2151 | bf_set(pde6_optx, pde6, txop); | |
2152 | bf_set(pde6_oprx, pde6, rxop); | |
2153 | bf_set(pde6_ce, pde6, checking); | |
2154 | bf_set(pde6_re, pde6, checking); | |
2155 | bf_set(pde6_ai, pde6, 1); | |
2156 | bf_set(pde6_ae, pde6, 0); | |
2157 | bf_set(pde6_apptagval, pde6, 0); | |
2158 | ||
2159 | /* Endianness conversion if necessary for PDE6 */ | |
2160 | pde6->word0 = cpu_to_le32(pde6->word0); | |
2161 | pde6->word1 = cpu_to_le32(pde6->word1); | |
2162 | pde6->word2 = cpu_to_le32(pde6->word2); | |
2163 | ||
2164 | /* advance bpl and increment bde count */ | |
2165 | num_bde++; | |
2166 | bpl++; | |
2167 | ||
2168 | /* setup the first BDE that points to protection buffer */ | |
2169 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; | |
2170 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
2171 | ||
2172 | /* must be integer multiple of the DIF block length */ | |
2173 | BUG_ON(protgroup_len % 8); | |
2174 | ||
2175 | pde7 = (struct lpfc_pde7 *) bpl; | |
2176 | memset(pde7, 0, sizeof(struct lpfc_pde7)); | |
2177 | bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); | |
2178 | ||
2179 | pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
2180 | pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
2181 | ||
2182 | protgrp_blks = protgroup_len / 8; | |
2183 | protgrp_bytes = protgrp_blks * blksize; | |
2184 | ||
2185 | /* check if this pde is crossing the 4K boundary; if so split */ | |
2186 | if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { | |
2187 | protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); | |
2188 | protgroup_offset += protgroup_remainder; | |
2189 | protgrp_blks = protgroup_remainder / 8; | |
2190 | protgrp_bytes = protgrp_blks * blksize; | |
2191 | } else { | |
2192 | protgroup_offset = 0; | |
2193 | curr_prot++; | |
2194 | } | |
2195 | ||
2196 | num_bde++; | |
2197 | ||
2198 | /* setup BDE's for data blocks associated with DIF data */ | |
2199 | pgdone = 0; | |
2200 | subtotal = 0; /* total bytes processed for current prot grp */ | |
2201 | while (!pgdone) { | |
2202 | if (!sgde) { | |
2203 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
2204 | "9065 BLKGRD:%s Invalid data segment\n", | |
2205 | __func__); | |
2206 | return 0; | |
2207 | } | |
2208 | bpl++; | |
2209 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
2210 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
2211 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
2212 | ||
2213 | remainder = sg_dma_len(sgde) - split_offset; | |
2214 | ||
2215 | if ((subtotal + remainder) <= protgrp_bytes) { | |
2216 | /* we can use this whole buffer */ | |
2217 | bpl->tus.f.bdeSize = remainder; | |
2218 | split_offset = 0; | |
2219 | ||
2220 | if ((subtotal + remainder) == protgrp_bytes) | |
2221 | pgdone = 1; | |
2222 | } else { | |
2223 | /* must split this buffer with next prot grp */ | |
2224 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
2225 | split_offset += bpl->tus.f.bdeSize; | |
2226 | } | |
2227 | ||
2228 | subtotal += bpl->tus.f.bdeSize; | |
2229 | ||
2230 | if (datadir == DMA_TO_DEVICE) | |
2231 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
2232 | else | |
2233 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
2234 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
2235 | ||
2236 | num_bde++; | |
2237 | curr_data++; | |
2238 | ||
2239 | if (split_offset) | |
2240 | break; | |
2241 | ||
2242 | /* Move to the next s/g segment if possible */ | |
2243 | sgde = sg_next(sgde); | |
2244 | ||
2245 | } | |
2246 | ||
2247 | if (protgroup_offset) { | |
2248 | /* update the reference tag */ | |
2249 | reftag += protgrp_blks; | |
2250 | bpl++; | |
2251 | continue; | |
2252 | } | |
2253 | ||
2254 | /* are we done ? */ | |
2255 | if (curr_prot == protcnt) { | |
2256 | alldone = 1; | |
2257 | } else if (curr_prot < protcnt) { | |
2258 | /* advance to next prot buffer */ | |
2259 | sgpe = sg_next(sgpe); | |
2260 | bpl++; | |
2261 | ||
2262 | /* update the reference tag */ | |
2263 | reftag += protgrp_blks; | |
2264 | } else { | |
2265 | /* if we're here, we have a bug */ | |
2266 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
2267 | "9054 BLKGRD: bug in %s\n", __func__); | |
2268 | } | |
2269 | ||
2270 | } while (!alldone); | |
2271 | out: | |
2272 | ||
2273 | return num_bde; | |
2274 | } | |
2275 | ||
2276 | /** | |
2277 | * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data | |
2278 | * @phba: The Hba for which this call is being executed. | |
2279 | * @sc: pointer to scsi command we're working on | |
2280 | * @sgl: pointer to buffer list for protection groups | |
2281 | * @datacnt: number of segments of data that have been dma mapped | |
2282 | * | |
2283 | * This function sets up SGL buffer list for protection groups of | |
2284 | * type LPFC_PG_TYPE_NO_DIF | |
2285 | * | |
2286 | * This is usually used when the HBA is instructed to generate | |
2287 | * DIFs and insert them into data stream (or strip DIF from | |
2288 | * incoming data stream) | |
2289 | * | |
2290 | * The buffer list consists of just one protection group described | |
2291 | * below: | |
2292 | * +-------------------------+ | |
2293 | * start of prot group --> | DI_SEED | | |
2294 | * +-------------------------+ | |
2295 | * | Data SGE | | |
2296 | * +-------------------------+ | |
2297 | * |more Data SGE's ... (opt)| | |
2298 | * +-------------------------+ | |
2299 | * | |
2300 | * | |
2301 | * Note: Data s/g buffers have been dma mapped | |
2302 | * | |
2303 | * Returns the number of SGEs added to the SGL. | |
2304 | **/ | |
2305 | static int | |
2306 | lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2307 | struct sli4_sge *sgl, int datasegcnt) | |
2308 | { | |
2309 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2310 | struct sli4_sge_diseed *diseed = NULL; | |
2311 | dma_addr_t physaddr; | |
2312 | int i = 0, num_sge = 0, status; | |
2313 | int datadir = sc->sc_data_direction; | |
2314 | uint32_t reftag; | |
2315 | unsigned blksize; | |
2316 | uint8_t txop, rxop; | |
0829a19a | 2317 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2318 | uint32_t rc; |
0829a19a | 2319 | #endif |
acd6859b JS |
2320 | uint32_t checking = 1; |
2321 | uint32_t dma_len; | |
2322 | uint32_t dma_offset = 0; | |
2323 | ||
2324 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); | |
2325 | if (status) | |
2326 | goto out; | |
2327 | ||
2328 | /* extract some info from the scsi command for pde*/ | |
2329 | blksize = lpfc_cmd_blksize(sc); | |
2330 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ | |
2331 | ||
2332 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
4ac9b226 | 2333 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2334 | if (rc) { |
9a6b09c0 | 2335 | if (rc & BG_ERR_SWAP) |
acd6859b | 2336 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2337 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2338 | checking = 0; |
2339 | } | |
2340 | #endif | |
2341 | ||
2342 | /* setup DISEED with what we have */ | |
2343 | diseed = (struct sli4_sge_diseed *) sgl; | |
2344 | memset(diseed, 0, sizeof(struct sli4_sge_diseed)); | |
2345 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); | |
2346 | ||
2347 | /* Endianness conversion if necessary */ | |
2348 | diseed->ref_tag = cpu_to_le32(reftag); | |
2349 | diseed->ref_tag_tran = diseed->ref_tag; | |
2350 | ||
2351 | /* setup DISEED with the rest of the info */ | |
2352 | bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); | |
2353 | bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); | |
2354 | if (datadir == DMA_FROM_DEVICE) { | |
2355 | bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); | |
2356 | bf_set(lpfc_sli4_sge_dif_re, diseed, checking); | |
2357 | } | |
2358 | bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); | |
2359 | bf_set(lpfc_sli4_sge_dif_me, diseed, 0); | |
2360 | ||
2361 | /* Endianness conversion if necessary for DISEED */ | |
2362 | diseed->word2 = cpu_to_le32(diseed->word2); | |
2363 | diseed->word3 = cpu_to_le32(diseed->word3); | |
2364 | ||
2365 | /* advance bpl and increment sge count */ | |
2366 | num_sge++; | |
2367 | sgl++; | |
2368 | ||
2369 | /* assumption: caller has already run dma_map_sg on command data */ | |
2370 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
2371 | physaddr = sg_dma_address(sgde); | |
2372 | dma_len = sg_dma_len(sgde); | |
2373 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); | |
2374 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
2375 | if ((i + 1) == datasegcnt) | |
2376 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
2377 | else | |
2378 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2379 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
2380 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
2381 | ||
2382 | sgl->sge_len = cpu_to_le32(dma_len); | |
2383 | dma_offset += dma_len; | |
2384 | ||
2385 | sgl++; | |
2386 | num_sge++; | |
2387 | } | |
2388 | ||
2389 | out: | |
2390 | return num_sge; | |
2391 | } | |
2392 | ||
2393 | /** | |
2394 | * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data | |
2395 | * @phba: The Hba for which this call is being executed. | |
2396 | * @sc: pointer to scsi command we're working on | |
2397 | * @sgl: pointer to buffer list for protection groups | |
2398 | * @datacnt: number of segments of data that have been dma mapped | |
2399 | * @protcnt: number of segment of protection data that have been dma mapped | |
2400 | * | |
2401 | * This function sets up SGL buffer list for protection groups of | |
2402 | * type LPFC_PG_TYPE_DIF | |
2403 | * | |
2404 | * This is usually used when DIFs are in their own buffers, | |
2405 | * separate from the data. The HBA can then by instructed | |
2406 | * to place the DIFs in the outgoing stream. For read operations, | |
2407 | * The HBA could extract the DIFs and place it in DIF buffers. | |
2408 | * | |
2409 | * The buffer list for this type consists of one or more of the | |
2410 | * protection groups described below: | |
2411 | * +-------------------------+ | |
2412 | * start of first prot group --> | DISEED | | |
2413 | * +-------------------------+ | |
2414 | * | DIF (Prot SGE) | | |
2415 | * +-------------------------+ | |
2416 | * | Data SGE | | |
2417 | * +-------------------------+ | |
2418 | * |more Data SGE's ... (opt)| | |
2419 | * +-------------------------+ | |
2420 | * start of new prot group --> | DISEED | | |
2421 | * +-------------------------+ | |
2422 | * | ... | | |
2423 | * +-------------------------+ | |
2424 | * | |
2425 | * Note: It is assumed that both data and protection s/g buffers have been | |
2426 | * mapped for DMA | |
2427 | * | |
2428 | * Returns the number of SGEs added to the SGL. | |
2429 | **/ | |
2430 | static int | |
2431 | lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2432 | struct sli4_sge *sgl, int datacnt, int protcnt) | |
2433 | { | |
2434 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2435 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
2436 | struct sli4_sge_diseed *diseed = NULL; | |
2437 | dma_addr_t dataphysaddr, protphysaddr; | |
2438 | unsigned short curr_data = 0, curr_prot = 0; | |
2439 | unsigned int split_offset; | |
2440 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
2441 | unsigned int protgrp_blks, protgrp_bytes; | |
2442 | unsigned int remainder, subtotal; | |
2443 | int status; | |
2444 | unsigned char pgdone = 0, alldone = 0; | |
2445 | unsigned blksize; | |
2446 | uint32_t reftag; | |
2447 | uint8_t txop, rxop; | |
2448 | uint32_t dma_len; | |
0829a19a | 2449 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2450 | uint32_t rc; |
0829a19a | 2451 | #endif |
acd6859b JS |
2452 | uint32_t checking = 1; |
2453 | uint32_t dma_offset = 0; | |
2454 | int num_sge = 0; | |
2455 | ||
2456 | sgpe = scsi_prot_sglist(sc); | |
2457 | sgde = scsi_sglist(sc); | |
2458 | ||
2459 | if (!sgpe || !sgde) { | |
2460 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2461 | "9082 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
e2a0a9d6 JS |
2462 | sgpe, sgde); |
2463 | return 0; | |
2464 | } | |
2465 | ||
6c8eea54 JS |
2466 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
2467 | if (status) | |
e2a0a9d6 JS |
2468 | goto out; |
2469 | ||
6c8eea54 | 2470 | /* extract some info from the scsi command */ |
e2a0a9d6 | 2471 | blksize = lpfc_cmd_blksize(sc); |
acd6859b | 2472 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ |
e2a0a9d6 | 2473 | |
f9bb2da1 | 2474 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4ac9b226 | 2475 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2476 | if (rc) { |
9a6b09c0 | 2477 | if (rc & BG_ERR_SWAP) |
acd6859b | 2478 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2479 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2480 | checking = 0; |
2481 | } | |
f9bb2da1 JS |
2482 | #endif |
2483 | ||
e2a0a9d6 JS |
2484 | split_offset = 0; |
2485 | do { | |
acd6859b JS |
2486 | /* setup DISEED with what we have */ |
2487 | diseed = (struct sli4_sge_diseed *) sgl; | |
2488 | memset(diseed, 0, sizeof(struct sli4_sge_diseed)); | |
2489 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); | |
2490 | ||
2491 | /* Endianness conversion if necessary */ | |
2492 | diseed->ref_tag = cpu_to_le32(reftag); | |
2493 | diseed->ref_tag_tran = diseed->ref_tag; | |
2494 | ||
2495 | /* setup DISEED with the rest of the info */ | |
2496 | bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); | |
2497 | bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); | |
2498 | bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); | |
2499 | bf_set(lpfc_sli4_sge_dif_re, diseed, checking); | |
2500 | bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); | |
2501 | bf_set(lpfc_sli4_sge_dif_me, diseed, 0); | |
2502 | ||
2503 | /* Endianness conversion if necessary for DISEED */ | |
2504 | diseed->word2 = cpu_to_le32(diseed->word2); | |
2505 | diseed->word3 = cpu_to_le32(diseed->word3); | |
2506 | ||
2507 | /* advance sgl and increment bde count */ | |
2508 | num_sge++; | |
2509 | sgl++; | |
e2a0a9d6 JS |
2510 | |
2511 | /* setup the first BDE that points to protection buffer */ | |
7f86059a JS |
2512 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; |
2513 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
e2a0a9d6 | 2514 | |
e2a0a9d6 JS |
2515 | /* must be integer multiple of the DIF block length */ |
2516 | BUG_ON(protgroup_len % 8); | |
2517 | ||
acd6859b JS |
2518 | /* Now setup DIF SGE */ |
2519 | sgl->word2 = 0; | |
2520 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); | |
2521 | sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
2522 | sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); | |
2523 | sgl->word2 = cpu_to_le32(sgl->word2); | |
7f86059a | 2524 | |
e2a0a9d6 JS |
2525 | protgrp_blks = protgroup_len / 8; |
2526 | protgrp_bytes = protgrp_blks * blksize; | |
2527 | ||
acd6859b JS |
2528 | /* check if DIF SGE is crossing the 4K boundary; if so split */ |
2529 | if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { | |
2530 | protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); | |
7f86059a JS |
2531 | protgroup_offset += protgroup_remainder; |
2532 | protgrp_blks = protgroup_remainder / 8; | |
7c56b9fd | 2533 | protgrp_bytes = protgrp_blks * blksize; |
7f86059a JS |
2534 | } else { |
2535 | protgroup_offset = 0; | |
2536 | curr_prot++; | |
2537 | } | |
e2a0a9d6 | 2538 | |
acd6859b | 2539 | num_sge++; |
e2a0a9d6 | 2540 | |
acd6859b | 2541 | /* setup SGE's for data blocks associated with DIF data */ |
e2a0a9d6 JS |
2542 | pgdone = 0; |
2543 | subtotal = 0; /* total bytes processed for current prot grp */ | |
2544 | while (!pgdone) { | |
2545 | if (!sgde) { | |
6a9c52cf | 2546 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
acd6859b | 2547 | "9086 BLKGRD:%s Invalid data segment\n", |
e2a0a9d6 JS |
2548 | __func__); |
2549 | return 0; | |
2550 | } | |
acd6859b | 2551 | sgl++; |
e2a0a9d6 | 2552 | dataphysaddr = sg_dma_address(sgde) + split_offset; |
e2a0a9d6 JS |
2553 | |
2554 | remainder = sg_dma_len(sgde) - split_offset; | |
2555 | ||
2556 | if ((subtotal + remainder) <= protgrp_bytes) { | |
2557 | /* we can use this whole buffer */ | |
acd6859b | 2558 | dma_len = remainder; |
e2a0a9d6 JS |
2559 | split_offset = 0; |
2560 | ||
2561 | if ((subtotal + remainder) == protgrp_bytes) | |
2562 | pgdone = 1; | |
2563 | } else { | |
2564 | /* must split this buffer with next prot grp */ | |
acd6859b JS |
2565 | dma_len = protgrp_bytes - subtotal; |
2566 | split_offset += dma_len; | |
e2a0a9d6 JS |
2567 | } |
2568 | ||
acd6859b | 2569 | subtotal += dma_len; |
e2a0a9d6 | 2570 | |
acd6859b JS |
2571 | sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr)); |
2572 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr)); | |
2573 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2574 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
2575 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
e2a0a9d6 | 2576 | |
acd6859b JS |
2577 | sgl->sge_len = cpu_to_le32(dma_len); |
2578 | dma_offset += dma_len; | |
2579 | ||
2580 | num_sge++; | |
e2a0a9d6 JS |
2581 | curr_data++; |
2582 | ||
2583 | if (split_offset) | |
2584 | break; | |
2585 | ||
2586 | /* Move to the next s/g segment if possible */ | |
2587 | sgde = sg_next(sgde); | |
2588 | } | |
2589 | ||
7f86059a JS |
2590 | if (protgroup_offset) { |
2591 | /* update the reference tag */ | |
2592 | reftag += protgrp_blks; | |
acd6859b | 2593 | sgl++; |
7f86059a JS |
2594 | continue; |
2595 | } | |
2596 | ||
e2a0a9d6 JS |
2597 | /* are we done ? */ |
2598 | if (curr_prot == protcnt) { | |
acd6859b | 2599 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
e2a0a9d6 JS |
2600 | alldone = 1; |
2601 | } else if (curr_prot < protcnt) { | |
2602 | /* advance to next prot buffer */ | |
2603 | sgpe = sg_next(sgpe); | |
acd6859b | 2604 | sgl++; |
e2a0a9d6 JS |
2605 | |
2606 | /* update the reference tag */ | |
2607 | reftag += protgrp_blks; | |
2608 | } else { | |
2609 | /* if we're here, we have a bug */ | |
6a9c52cf | 2610 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
acd6859b | 2611 | "9085 BLKGRD: bug in %s\n", __func__); |
e2a0a9d6 JS |
2612 | } |
2613 | ||
2614 | } while (!alldone); | |
acd6859b | 2615 | |
e2a0a9d6 JS |
2616 | out: |
2617 | ||
acd6859b | 2618 | return num_sge; |
e2a0a9d6 | 2619 | } |
7f86059a | 2620 | |
acd6859b JS |
2621 | /** |
2622 | * lpfc_prot_group_type - Get prtotection group type of SCSI command | |
2623 | * @phba: The Hba for which this call is being executed. | |
2624 | * @sc: pointer to scsi command we're working on | |
2625 | * | |
e2a0a9d6 JS |
2626 | * Given a SCSI command that supports DIF, determine composition of protection |
2627 | * groups involved in setting up buffer lists | |
2628 | * | |
acd6859b JS |
2629 | * Returns: Protection group type (with or without DIF) |
2630 | * | |
2631 | **/ | |
e2a0a9d6 JS |
2632 | static int |
2633 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
2634 | { | |
2635 | int ret = LPFC_PG_TYPE_INVALID; | |
2636 | unsigned char op = scsi_get_prot_op(sc); | |
2637 | ||
2638 | switch (op) { | |
2639 | case SCSI_PROT_READ_STRIP: | |
2640 | case SCSI_PROT_WRITE_INSERT: | |
2641 | ret = LPFC_PG_TYPE_NO_DIF; | |
2642 | break; | |
2643 | case SCSI_PROT_READ_INSERT: | |
2644 | case SCSI_PROT_WRITE_STRIP: | |
2645 | case SCSI_PROT_READ_PASS: | |
2646 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
2647 | ret = LPFC_PG_TYPE_DIF_BUF; |
2648 | break; | |
2649 | default: | |
2650 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2651 | "9021 Unsupported protection op:%d\n", op); | |
2652 | break; | |
2653 | } | |
2654 | ||
2655 | return ret; | |
2656 | } | |
2657 | ||
acd6859b JS |
2658 | /** |
2659 | * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
2660 | * @phba: The Hba for which this call is being executed. | |
2661 | * @lpfc_cmd: The scsi buffer which is going to be prep'ed. | |
2662 | * | |
e2a0a9d6 JS |
2663 | * This is the protection/DIF aware version of |
2664 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
2665 | * two functions eventually, but for now, it's here | |
acd6859b | 2666 | **/ |
e2a0a9d6 | 2667 | static int |
acd6859b | 2668 | lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, |
e2a0a9d6 JS |
2669 | struct lpfc_scsi_buf *lpfc_cmd) |
2670 | { | |
2671 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
2672 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2673 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
2674 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2675 | uint32_t num_bde = 0; | |
2676 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
2677 | int prot_group_type = 0; | |
2678 | int diflen, fcpdl; | |
2679 | unsigned blksize; | |
2680 | ||
2681 | /* | |
2682 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
2683 | * fcp_rsp regions to the first data bde entry | |
2684 | */ | |
2685 | bpl += 2; | |
2686 | if (scsi_sg_count(scsi_cmnd)) { | |
2687 | /* | |
2688 | * The driver stores the segment count returned from pci_map_sg | |
2689 | * because this a count of dma-mappings used to map the use_sg | |
2690 | * pages. They are not guaranteed to be the same for those | |
2691 | * architectures that implement an IOMMU. | |
2692 | */ | |
2693 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
2694 | scsi_sglist(scsi_cmnd), | |
2695 | scsi_sg_count(scsi_cmnd), datadir); | |
2696 | if (unlikely(!datasegcnt)) | |
2697 | return 1; | |
2698 | ||
2699 | lpfc_cmd->seg_cnt = datasegcnt; | |
2700 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
2701 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2702 | "9067 BLKGRD: %s: Too many sg segments" | |
2703 | " from dma_map_sg. Config %d, seg_cnt" | |
2704 | " %d\n", | |
e2a0a9d6 JS |
2705 | __func__, phba->cfg_sg_seg_cnt, |
2706 | lpfc_cmd->seg_cnt); | |
2707 | scsi_dma_unmap(scsi_cmnd); | |
2708 | return 1; | |
2709 | } | |
2710 | ||
2711 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
2712 | ||
2713 | switch (prot_group_type) { | |
2714 | case LPFC_PG_TYPE_NO_DIF: | |
2715 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, | |
2716 | datasegcnt); | |
c9404c9c | 2717 | /* we should have 2 or more entries in buffer list */ |
e2a0a9d6 JS |
2718 | if (num_bde < 2) |
2719 | goto err; | |
2720 | break; | |
2721 | case LPFC_PG_TYPE_DIF_BUF:{ | |
2722 | /* | |
2723 | * This type indicates that protection buffers are | |
2724 | * passed to the driver, so that needs to be prepared | |
2725 | * for DMA | |
2726 | */ | |
2727 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
2728 | scsi_prot_sglist(scsi_cmnd), | |
2729 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
2730 | if (unlikely(!protsegcnt)) { | |
2731 | scsi_dma_unmap(scsi_cmnd); | |
2732 | return 1; | |
2733 | } | |
2734 | ||
2735 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
2736 | if (lpfc_cmd->prot_seg_cnt | |
2737 | > phba->cfg_prot_sg_seg_cnt) { | |
6a9c52cf JS |
2738 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2739 | "9068 BLKGRD: %s: Too many prot sg " | |
2740 | "segments from dma_map_sg. Config %d," | |
e2a0a9d6 JS |
2741 | "prot_seg_cnt %d\n", __func__, |
2742 | phba->cfg_prot_sg_seg_cnt, | |
2743 | lpfc_cmd->prot_seg_cnt); | |
2744 | dma_unmap_sg(&phba->pcidev->dev, | |
2745 | scsi_prot_sglist(scsi_cmnd), | |
2746 | scsi_prot_sg_count(scsi_cmnd), | |
2747 | datadir); | |
2748 | scsi_dma_unmap(scsi_cmnd); | |
2749 | return 1; | |
2750 | } | |
2751 | ||
2752 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
2753 | datasegcnt, protsegcnt); | |
c9404c9c | 2754 | /* we should have 3 or more entries in buffer list */ |
e2a0a9d6 JS |
2755 | if (num_bde < 3) |
2756 | goto err; | |
2757 | break; | |
2758 | } | |
2759 | case LPFC_PG_TYPE_INVALID: | |
2760 | default: | |
2761 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2762 | "9022 Unexpected protection group %i\n", | |
2763 | prot_group_type); | |
2764 | return 1; | |
2765 | } | |
2766 | } | |
2767 | ||
2768 | /* | |
2769 | * Finish initializing those IOCB fields that are dependent on the | |
2770 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
2771 | * reinitialized since all iocb memory resources are used many times | |
2772 | * for transmit, receive, and continuation bpl's. | |
2773 | */ | |
2774 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
2775 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
2776 | iocb_cmd->ulpBdeCount = 1; | |
2777 | iocb_cmd->ulpLe = 1; | |
2778 | ||
2779 | fcpdl = scsi_bufflen(scsi_cmnd); | |
2780 | ||
2781 | if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) { | |
2782 | /* | |
2783 | * We are in DIF Type 1 mode | |
2784 | * Every data block has a 8 byte DIF (trailer) | |
2785 | * attached to it. Must ajust FCP data length | |
2786 | */ | |
2787 | blksize = lpfc_cmd_blksize(scsi_cmnd); | |
2788 | diflen = (fcpdl / blksize) * 8; | |
2789 | fcpdl += diflen; | |
2790 | } | |
2791 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
2792 | ||
2793 | /* | |
2794 | * Due to difference in data length between DIF/non-DIF paths, | |
2795 | * we need to set word 4 of IOCB here | |
2796 | */ | |
2797 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
2798 | ||
dea3101e | 2799 | return 0; |
e2a0a9d6 JS |
2800 | err: |
2801 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2802 | "9023 Could not setup all needed BDE's" | |
2803 | "prot_group_type=%d, num_bde=%d\n", | |
2804 | prot_group_type, num_bde); | |
2805 | return 1; | |
2806 | } | |
2807 | ||
2808 | /* | |
2809 | * This function checks for BlockGuard errors detected by | |
2810 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
2811 | * sense buffer will be set accordingly, paired with | |
2812 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
2813 | * detected corruption. | |
2814 | * | |
2815 | * Returns: | |
2816 | * 0 - No error found | |
2817 | * 1 - BlockGuard error found | |
2818 | * -1 - Internal error (bad profile, ...etc) | |
2819 | */ | |
2820 | static int | |
2821 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
2822 | struct lpfc_iocbq *pIocbOut) | |
2823 | { | |
2824 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
2825 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
2826 | int ret = 0; | |
2827 | uint32_t bghm = bgf->bghm; | |
2828 | uint32_t bgstat = bgf->bgstat; | |
2829 | uint64_t failing_sector = 0; | |
2830 | ||
6a9c52cf JS |
2831 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd" |
2832 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
e2a0a9d6 | 2833 | "bgstat=0x%x bghm=0x%x\n", |
87b5c328 | 2834 | cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd), |
83096ebf | 2835 | blk_rq_sectors(cmd->request), bgstat, bghm); |
e2a0a9d6 JS |
2836 | |
2837 | spin_lock(&_dump_buf_lock); | |
2838 | if (!_dump_buf_done) { | |
6a9c52cf JS |
2839 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
2840 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 2841 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 2842 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
2843 | |
2844 | /* If we have a prot sgl, save the DIF buffer */ | |
2845 | if (lpfc_prot_group_type(phba, cmd) == | |
2846 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
2847 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
2848 | "Saving DIF for %u blocks to debugfs\n", | |
2849 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
2850 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
2851 | } |
2852 | ||
2853 | _dump_buf_done = 1; | |
2854 | } | |
2855 | spin_unlock(&_dump_buf_lock); | |
2856 | ||
2857 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
2858 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
2859 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid" |
2860 | " BlockGuard profile. bgstat:0x%x\n", | |
2861 | bgstat); | |
e2a0a9d6 JS |
2862 | ret = (-1); |
2863 | goto out; | |
2864 | } | |
2865 | ||
2866 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
2867 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
2868 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: " |
2869 | "Invalid BlockGuard DIF Block. bgstat:0x%x\n", | |
e2a0a9d6 JS |
2870 | bgstat); |
2871 | ret = (-1); | |
2872 | goto out; | |
2873 | } | |
2874 | ||
2875 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
2876 | ret = 1; | |
2877 | ||
2878 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
2879 | 0x10, 0x1); | |
1c9fbafc | 2880 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
2881 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
2882 | phba->bg_guard_err_cnt++; | |
6a9c52cf JS |
2883 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2884 | "9055 BLKGRD: guard_tag error\n"); | |
e2a0a9d6 JS |
2885 | } |
2886 | ||
2887 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
2888 | ret = 1; | |
2889 | ||
2890 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
2891 | 0x10, 0x3); | |
1c9fbafc | 2892 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
2893 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
2894 | ||
2895 | phba->bg_reftag_err_cnt++; | |
6a9c52cf JS |
2896 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2897 | "9056 BLKGRD: ref_tag error\n"); | |
e2a0a9d6 JS |
2898 | } |
2899 | ||
2900 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
2901 | ret = 1; | |
2902 | ||
2903 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
2904 | 0x10, 0x2); | |
1c9fbafc | 2905 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
2906 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
2907 | ||
2908 | phba->bg_apptag_err_cnt++; | |
6a9c52cf JS |
2909 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2910 | "9061 BLKGRD: app_tag error\n"); | |
e2a0a9d6 JS |
2911 | } |
2912 | ||
2913 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
2914 | /* | |
2915 | * setup sense data descriptor 0 per SPC-4 as an information | |
7c56b9fd JS |
2916 | * field, and put the failing LBA in it. |
2917 | * This code assumes there was also a guard/app/ref tag error | |
2918 | * indication. | |
e2a0a9d6 | 2919 | */ |
7c56b9fd JS |
2920 | cmd->sense_buffer[7] = 0xc; /* Additional sense length */ |
2921 | cmd->sense_buffer[8] = 0; /* Information descriptor type */ | |
2922 | cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ | |
2923 | cmd->sense_buffer[10] = 0x80; /* Validity bit */ | |
acd6859b JS |
2924 | |
2925 | /* bghm is a "on the wire" FC frame based count */ | |
2926 | switch (scsi_get_prot_op(cmd)) { | |
2927 | case SCSI_PROT_READ_INSERT: | |
2928 | case SCSI_PROT_WRITE_STRIP: | |
2929 | bghm /= cmd->device->sector_size; | |
2930 | break; | |
2931 | case SCSI_PROT_READ_STRIP: | |
2932 | case SCSI_PROT_WRITE_INSERT: | |
2933 | case SCSI_PROT_READ_PASS: | |
2934 | case SCSI_PROT_WRITE_PASS: | |
2935 | bghm /= (cmd->device->sector_size + | |
2936 | sizeof(struct scsi_dif_tuple)); | |
2937 | break; | |
2938 | } | |
e2a0a9d6 JS |
2939 | |
2940 | failing_sector = scsi_get_lba(cmd); | |
2941 | failing_sector += bghm; | |
2942 | ||
7c56b9fd JS |
2943 | /* Descriptor Information */ |
2944 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); | |
e2a0a9d6 JS |
2945 | } |
2946 | ||
2947 | if (!ret) { | |
2948 | /* No error was reported - problem in FW? */ | |
2949 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf | 2950 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
4ac9b226 | 2951 | "9057 BLKGRD: Unknown error reported!\n"); |
e2a0a9d6 JS |
2952 | } |
2953 | ||
2954 | out: | |
2955 | return ret; | |
dea3101e | 2956 | } |
2957 | ||
da0436e9 JS |
2958 | /** |
2959 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
2960 | * @phba: The Hba for which this call is being executed. | |
2961 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
2962 | * | |
2963 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
2964 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
2965 | * | |
2966 | * Return codes: | |
6c8eea54 JS |
2967 | * 1 - Error |
2968 | * 0 - Success | |
da0436e9 JS |
2969 | **/ |
2970 | static int | |
2971 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
2972 | { | |
2973 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
2974 | struct scatterlist *sgel = NULL; | |
2975 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2976 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
fedd3b7b | 2977 | struct sli4_sge *first_data_sgl; |
da0436e9 JS |
2978 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
2979 | dma_addr_t physaddr; | |
2980 | uint32_t num_bde = 0; | |
2981 | uint32_t dma_len; | |
2982 | uint32_t dma_offset = 0; | |
2983 | int nseg; | |
fedd3b7b | 2984 | struct ulp_bde64 *bde; |
da0436e9 JS |
2985 | |
2986 | /* | |
2987 | * There are three possibilities here - use scatter-gather segment, use | |
2988 | * the single mapping, or neither. Start the lpfc command prep by | |
2989 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2990 | * data bde entry. | |
2991 | */ | |
2992 | if (scsi_sg_count(scsi_cmnd)) { | |
2993 | /* | |
2994 | * The driver stores the segment count returned from pci_map_sg | |
2995 | * because this a count of dma-mappings used to map the use_sg | |
2996 | * pages. They are not guaranteed to be the same for those | |
2997 | * architectures that implement an IOMMU. | |
2998 | */ | |
2999 | ||
3000 | nseg = scsi_dma_map(scsi_cmnd); | |
3001 | if (unlikely(!nseg)) | |
3002 | return 1; | |
3003 | sgl += 1; | |
3004 | /* clear the last flag in the fcp_rsp map entry */ | |
3005 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3006 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3007 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3008 | sgl += 1; | |
fedd3b7b | 3009 | first_data_sgl = sgl; |
da0436e9 JS |
3010 | lpfc_cmd->seg_cnt = nseg; |
3011 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
3012 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
3013 | " %s: Too many sg segments from " | |
3014 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
3015 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 JS |
3016 | lpfc_cmd->seg_cnt); |
3017 | scsi_dma_unmap(scsi_cmnd); | |
3018 | return 1; | |
3019 | } | |
3020 | ||
3021 | /* | |
3022 | * The driver established a maximum scatter-gather segment count | |
3023 | * during probe that limits the number of sg elements in any | |
3024 | * single scsi command. Just run through the seg_cnt and format | |
3025 | * the sge's. | |
3026 | * When using SLI-3 the driver will try to fit all the BDEs into | |
3027 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
3028 | * does for SLI-2 mode. | |
3029 | */ | |
3030 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
3031 | physaddr = sg_dma_address(sgel); | |
3032 | dma_len = sg_dma_len(sgel); | |
da0436e9 JS |
3033 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); |
3034 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
0558056c | 3035 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
3036 | if ((num_bde + 1) == nseg) |
3037 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
3038 | else | |
3039 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3040 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
f9bb2da1 | 3041 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); |
da0436e9 | 3042 | sgl->word2 = cpu_to_le32(sgl->word2); |
28baac74 | 3043 | sgl->sge_len = cpu_to_le32(dma_len); |
da0436e9 JS |
3044 | dma_offset += dma_len; |
3045 | sgl++; | |
3046 | } | |
fedd3b7b JS |
3047 | /* setup the performance hint (first data BDE) if enabled */ |
3048 | if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) { | |
3049 | bde = (struct ulp_bde64 *) | |
3050 | &(iocb_cmd->unsli3.sli3Words[5]); | |
3051 | bde->addrLow = first_data_sgl->addr_lo; | |
3052 | bde->addrHigh = first_data_sgl->addr_hi; | |
3053 | bde->tus.f.bdeSize = | |
3054 | le32_to_cpu(first_data_sgl->sge_len); | |
3055 | bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
3056 | bde->tus.w = cpu_to_le32(bde->tus.w); | |
3057 | } | |
da0436e9 JS |
3058 | } else { |
3059 | sgl += 1; | |
3060 | /* clear the last flag in the fcp_rsp map entry */ | |
3061 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3062 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
3063 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3064 | } | |
3065 | ||
3066 | /* | |
3067 | * Finish initializing those IOCB fields that are dependent on the | |
3068 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
3069 | * explicitly reinitialized. | |
3070 | * all iocb memory resources are reused. | |
3071 | */ | |
3072 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
3073 | ||
3074 | /* | |
3075 | * Due to difference in data length between DIF/non-DIF paths, | |
3076 | * we need to set word 4 of IOCB here | |
3077 | */ | |
3078 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
3079 | return 0; | |
3080 | } | |
3081 | ||
acd6859b JS |
3082 | /** |
3083 | * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard | |
3084 | * @phba: The Hba for which this call is being executed. | |
3085 | * @lpfc_cmd: The scsi buffer which is going to be adjusted. | |
3086 | * | |
3087 | * Adjust the data length to account for how much data | |
3088 | * is actually on the wire. | |
3089 | * | |
3090 | * returns the adjusted data length | |
3091 | **/ | |
3092 | static int | |
3093 | lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, | |
3094 | struct lpfc_scsi_buf *lpfc_cmd) | |
3095 | { | |
3096 | struct scsi_cmnd *sc = lpfc_cmd->pCmd; | |
3097 | int diflen, fcpdl; | |
3098 | unsigned blksize; | |
3099 | ||
3100 | fcpdl = scsi_bufflen(sc); | |
3101 | ||
3102 | /* Check if there is protection data on the wire */ | |
3103 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { | |
3104 | /* Read */ | |
3105 | if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) | |
3106 | return fcpdl; | |
3107 | ||
3108 | } else { | |
3109 | /* Write */ | |
3110 | if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) | |
3111 | return fcpdl; | |
3112 | } | |
3113 | ||
3114 | /* If protection data on the wire, adjust the count accordingly */ | |
3115 | blksize = lpfc_cmd_blksize(sc); | |
3116 | diflen = (fcpdl / blksize) * 8; | |
3117 | fcpdl += diflen; | |
3118 | return fcpdl; | |
3119 | } | |
3120 | ||
3121 | /** | |
3122 | * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
3123 | * @phba: The Hba for which this call is being executed. | |
3124 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3125 | * | |
3126 | * This is the protection/DIF aware version of | |
3127 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
3128 | * two functions eventually, but for now, it's here | |
3129 | **/ | |
3130 | static int | |
3131 | lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, | |
3132 | struct lpfc_scsi_buf *lpfc_cmd) | |
3133 | { | |
3134 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
3135 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
3136 | struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl); | |
3137 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
3138 | uint32_t num_bde = 0; | |
3139 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
3140 | int prot_group_type = 0; | |
3141 | int fcpdl; | |
3142 | ||
3143 | /* | |
3144 | * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd | |
3145 | * fcp_rsp regions to the first data bde entry | |
3146 | */ | |
3147 | if (scsi_sg_count(scsi_cmnd)) { | |
3148 | /* | |
3149 | * The driver stores the segment count returned from pci_map_sg | |
3150 | * because this a count of dma-mappings used to map the use_sg | |
3151 | * pages. They are not guaranteed to be the same for those | |
3152 | * architectures that implement an IOMMU. | |
3153 | */ | |
3154 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
3155 | scsi_sglist(scsi_cmnd), | |
3156 | scsi_sg_count(scsi_cmnd), datadir); | |
3157 | if (unlikely(!datasegcnt)) | |
3158 | return 1; | |
3159 | ||
3160 | sgl += 1; | |
3161 | /* clear the last flag in the fcp_rsp map entry */ | |
3162 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3163 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3164 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3165 | ||
3166 | sgl += 1; | |
3167 | lpfc_cmd->seg_cnt = datasegcnt; | |
3168 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
3169 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
3170 | "9087 BLKGRD: %s: Too many sg segments" | |
3171 | " from dma_map_sg. Config %d, seg_cnt" | |
3172 | " %d\n", | |
3173 | __func__, phba->cfg_sg_seg_cnt, | |
3174 | lpfc_cmd->seg_cnt); | |
3175 | scsi_dma_unmap(scsi_cmnd); | |
3176 | return 1; | |
3177 | } | |
3178 | ||
3179 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
3180 | ||
3181 | switch (prot_group_type) { | |
3182 | case LPFC_PG_TYPE_NO_DIF: | |
3183 | num_bde = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, | |
3184 | datasegcnt); | |
3185 | /* we should have 2 or more entries in buffer list */ | |
3186 | if (num_bde < 2) | |
3187 | goto err; | |
3188 | break; | |
3189 | case LPFC_PG_TYPE_DIF_BUF:{ | |
3190 | /* | |
3191 | * This type indicates that protection buffers are | |
3192 | * passed to the driver, so that needs to be prepared | |
3193 | * for DMA | |
3194 | */ | |
3195 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
3196 | scsi_prot_sglist(scsi_cmnd), | |
3197 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
3198 | if (unlikely(!protsegcnt)) { | |
3199 | scsi_dma_unmap(scsi_cmnd); | |
3200 | return 1; | |
3201 | } | |
3202 | ||
3203 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
3204 | if (lpfc_cmd->prot_seg_cnt | |
3205 | > phba->cfg_prot_sg_seg_cnt) { | |
3206 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
3207 | "9088 BLKGRD: %s: Too many prot sg " | |
3208 | "segments from dma_map_sg. Config %d," | |
3209 | "prot_seg_cnt %d\n", __func__, | |
3210 | phba->cfg_prot_sg_seg_cnt, | |
3211 | lpfc_cmd->prot_seg_cnt); | |
3212 | dma_unmap_sg(&phba->pcidev->dev, | |
3213 | scsi_prot_sglist(scsi_cmnd), | |
3214 | scsi_prot_sg_count(scsi_cmnd), | |
3215 | datadir); | |
3216 | scsi_dma_unmap(scsi_cmnd); | |
3217 | return 1; | |
3218 | } | |
3219 | ||
3220 | num_bde = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, | |
3221 | datasegcnt, protsegcnt); | |
3222 | /* we should have 3 or more entries in buffer list */ | |
3223 | if (num_bde < 3) | |
3224 | goto err; | |
3225 | break; | |
3226 | } | |
3227 | case LPFC_PG_TYPE_INVALID: | |
3228 | default: | |
3229 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
3230 | "9083 Unexpected protection group %i\n", | |
3231 | prot_group_type); | |
3232 | return 1; | |
3233 | } | |
3234 | } | |
3235 | ||
3236 | fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); | |
3237 | ||
3238 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
3239 | ||
3240 | /* | |
3241 | * Due to difference in data length between DIF/non-DIF paths, | |
3242 | * we need to set word 4 of IOCB here | |
3243 | */ | |
3244 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
3245 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF; | |
3246 | ||
3247 | return 0; | |
3248 | err: | |
3249 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
3250 | "9084 Could not setup all needed BDE's" | |
3251 | "prot_group_type=%d, num_bde=%d\n", | |
3252 | prot_group_type, num_bde); | |
3253 | return 1; | |
3254 | } | |
3255 | ||
3772a991 JS |
3256 | /** |
3257 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
3258 | * @phba: The Hba for which this call is being executed. | |
3259 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3260 | * | |
3261 | * This routine wraps the actual DMA mapping function pointer from the | |
3262 | * lpfc_hba struct. | |
3263 | * | |
3264 | * Return codes: | |
6c8eea54 JS |
3265 | * 1 - Error |
3266 | * 0 - Success | |
3772a991 JS |
3267 | **/ |
3268 | static inline int | |
3269 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3270 | { | |
3271 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3272 | } | |
3273 | ||
acd6859b JS |
3274 | /** |
3275 | * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
3276 | * using BlockGuard. | |
3277 | * @phba: The Hba for which this call is being executed. | |
3278 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3279 | * | |
3280 | * This routine wraps the actual DMA mapping function pointer from the | |
3281 | * lpfc_hba struct. | |
3282 | * | |
3283 | * Return codes: | |
3284 | * 1 - Error | |
3285 | * 0 - Success | |
3286 | **/ | |
3287 | static inline int | |
3288 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3289 | { | |
3290 | return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3291 | } | |
3292 | ||
ea2151b4 | 3293 | /** |
3621a710 | 3294 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
3295 | * @phba: Pointer to hba context object. |
3296 | * @vport: Pointer to vport object. | |
3297 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
3298 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
3299 | * | |
3300 | * This function posts an event when there is a SCSI command reporting | |
3301 | * error from the scsi device. | |
3302 | **/ | |
3303 | static void | |
3304 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
3305 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
3306 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
3307 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
3308 | uint32_t resp_info = fcprsp->rspStatus2; | |
3309 | uint32_t scsi_status = fcprsp->rspStatus3; | |
3310 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
3311 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
3312 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
3313 | unsigned long flags; | |
3314 | ||
5989b8d4 JS |
3315 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
3316 | return; | |
3317 | ||
ea2151b4 JS |
3318 | /* If there is queuefull or busy condition send a scsi event */ |
3319 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
3320 | (cmnd->result == SAM_STAT_BUSY)) { | |
3321 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3322 | if (!fast_path_evt) | |
3323 | return; | |
3324 | fast_path_evt->un.scsi_evt.event_type = | |
3325 | FC_REG_SCSI_EVENT; | |
3326 | fast_path_evt->un.scsi_evt.subcategory = | |
3327 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
3328 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
3329 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
3330 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
3331 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3332 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
3333 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3334 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
3335 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
3336 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3337 | if (!fast_path_evt) | |
3338 | return; | |
3339 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
3340 | FC_REG_SCSI_EVENT; | |
3341 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
3342 | LPFC_EVENT_CHECK_COND; | |
3343 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
3344 | cmnd->device->lun; | |
3345 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
3346 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3347 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
3348 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3349 | fast_path_evt->un.check_cond_evt.sense_key = | |
3350 | cmnd->sense_buffer[2] & 0xf; | |
3351 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
3352 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
3353 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
3354 | fcpi_parm && | |
3355 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
3356 | ((scsi_status == SAM_STAT_GOOD) && | |
3357 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
3358 | /* | |
3359 | * If status is good or resid does not match with fcp_param and | |
3360 | * there is valid fcpi_parm, then there is a read_check error | |
3361 | */ | |
3362 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3363 | if (!fast_path_evt) | |
3364 | return; | |
3365 | fast_path_evt->un.read_check_error.header.event_type = | |
3366 | FC_REG_FABRIC_EVENT; | |
3367 | fast_path_evt->un.read_check_error.header.subcategory = | |
3368 | LPFC_EVENT_FCPRDCHKERR; | |
3369 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
3370 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3371 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
3372 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3373 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
3374 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
3375 | fast_path_evt->un.read_check_error.fcpiparam = | |
3376 | fcpi_parm; | |
3377 | } else | |
3378 | return; | |
3379 | ||
3380 | fast_path_evt->vport = vport; | |
3381 | spin_lock_irqsave(&phba->hbalock, flags); | |
3382 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
3383 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
3384 | lpfc_worker_wake_up(phba); | |
3385 | return; | |
3386 | } | |
9bad7671 JS |
3387 | |
3388 | /** | |
f1126688 | 3389 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 3390 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
3391 | * @psb: The scsi buffer which is going to be un-mapped. |
3392 | * | |
3393 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 3394 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 3395 | **/ |
bcf4dbfa | 3396 | static void |
f1126688 | 3397 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
3398 | { |
3399 | /* | |
3400 | * There are only two special cases to consider. (1) the scsi command | |
3401 | * requested scatter-gather usage or (2) the scsi command allocated | |
3402 | * a request buffer, but did not request use_sg. There is a third | |
3403 | * case, but it does not require resource deallocation. | |
3404 | */ | |
a0b4f78f FT |
3405 | if (psb->seg_cnt > 0) |
3406 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
3407 | if (psb->prot_seg_cnt > 0) |
3408 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
3409 | scsi_prot_sg_count(psb->pCmd), | |
3410 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
3411 | } |
3412 | ||
9bad7671 | 3413 | /** |
3621a710 | 3414 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
3415 | * @vport: The virtual port for which this call is being executed. |
3416 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
3417 | * @rsp_iocb: The response IOCB which contains FCP error. | |
3418 | * | |
3419 | * This routine is called to process response IOCB with status field | |
3420 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
3421 | * based upon SCSI and FCP error. | |
3422 | **/ | |
dea3101e | 3423 | static void |
2e0fef85 JS |
3424 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
3425 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 3426 | { |
3427 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
3428 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
3429 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 3430 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 3431 | uint32_t resp_info = fcprsp->rspStatus2; |
3432 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 3433 | uint32_t *lp; |
dea3101e | 3434 | uint32_t host_status = DID_OK; |
3435 | uint32_t rsplen = 0; | |
c7743956 | 3436 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 3437 | |
ea2151b4 | 3438 | |
dea3101e | 3439 | /* |
3440 | * If this is a task management command, there is no | |
3441 | * scsi packet associated with this lpfc_cmd. The driver | |
3442 | * consumes it. | |
3443 | */ | |
3444 | if (fcpcmd->fcpCntl2) { | |
3445 | scsi_status = 0; | |
3446 | goto out; | |
3447 | } | |
3448 | ||
6a9c52cf JS |
3449 | if (resp_info & RSP_LEN_VALID) { |
3450 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
e40a02c1 | 3451 | if (rsplen != 0 && rsplen != 4 && rsplen != 8) { |
6a9c52cf JS |
3452 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3453 | "2719 Invalid response length: " | |
3454 | "tgt x%x lun x%x cmnd x%x rsplen x%x\n", | |
3455 | cmnd->device->id, | |
3456 | cmnd->device->lun, cmnd->cmnd[0], | |
3457 | rsplen); | |
3458 | host_status = DID_ERROR; | |
3459 | goto out; | |
3460 | } | |
e40a02c1 JS |
3461 | if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { |
3462 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3463 | "2757 Protocol failure detected during " | |
3464 | "processing of FCP I/O op: " | |
3465 | "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n", | |
3466 | cmnd->device->id, | |
3467 | cmnd->device->lun, cmnd->cmnd[0], | |
3468 | fcprsp->rspInfo3); | |
3469 | host_status = DID_ERROR; | |
3470 | goto out; | |
3471 | } | |
6a9c52cf JS |
3472 | } |
3473 | ||
c7743956 JS |
3474 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
3475 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
3476 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
3477 | snslen = SCSI_SENSE_BUFFERSIZE; | |
3478 | ||
3479 | if (resp_info & RSP_LEN_VALID) | |
3480 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
3481 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
3482 | } | |
3483 | lp = (uint32_t *)cmnd->sense_buffer; | |
3484 | ||
73d91e50 JS |
3485 | if (!scsi_status && (resp_info & RESID_UNDER) && |
3486 | vport->cfg_log_verbose & LOG_FCP_UNDER) | |
3487 | logit = LOG_FCP_UNDER; | |
c7743956 | 3488 | |
e8b62011 | 3489 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 3490 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
3491 | "Data: x%x x%x x%x x%x x%x\n", |
3492 | cmnd->cmnd[0], scsi_status, | |
3493 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
3494 | be32_to_cpu(fcprsp->rspResId), | |
3495 | be32_to_cpu(fcprsp->rspSnsLen), | |
3496 | be32_to_cpu(fcprsp->rspRspLen), | |
3497 | fcprsp->rspInfo3); | |
dea3101e | 3498 | |
a0b4f78f | 3499 | scsi_set_resid(cmnd, 0); |
dea3101e | 3500 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 3501 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 3502 | |
73d91e50 | 3503 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, |
e2a0a9d6 | 3504 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
3505 | "residual %d Data: x%x x%x x%x\n", |
3506 | be32_to_cpu(fcpcmd->fcpDl), | |
3507 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
3508 | cmnd->underflow); | |
dea3101e | 3509 | |
7054a606 JS |
3510 | /* |
3511 | * If there is an under run check if under run reported by | |
3512 | * storage array is same as the under run reported by HBA. | |
3513 | * If this is not same, there is a dropped frame. | |
3514 | */ | |
3515 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
3516 | fcpi_parm && | |
a0b4f78f | 3517 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
3518 | lpfc_printf_vlog(vport, KERN_WARNING, |
3519 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 3520 | "9026 FCP Read Check Error " |
e8b62011 JS |
3521 | "and Underrun Data: x%x x%x x%x x%x\n", |
3522 | be32_to_cpu(fcpcmd->fcpDl), | |
3523 | scsi_get_resid(cmnd), fcpi_parm, | |
3524 | cmnd->cmnd[0]); | |
a0b4f78f | 3525 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
3526 | host_status = DID_ERROR; |
3527 | } | |
dea3101e | 3528 | /* |
3529 | * The cmnd->underflow is the minimum number of bytes that must | |
25985edc | 3530 | * be transferred for this command. Provided a sense condition |
dea3101e | 3531 | * is not present, make sure the actual amount transferred is at |
3532 | * least the underflow value or fail. | |
3533 | */ | |
3534 | if (!(resp_info & SNS_LEN_VALID) && | |
3535 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
3536 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
3537 | < cmnd->underflow)) { | |
e8b62011 | 3538 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 3539 | "9027 FCP command x%x residual " |
e8b62011 JS |
3540 | "underrun converted to error " |
3541 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 3542 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 3543 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e | 3544 | host_status = DID_ERROR; |
3545 | } | |
3546 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 3547 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 3548 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 3549 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 3550 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e | 3551 | host_status = DID_ERROR; |
3552 | ||
3553 | /* | |
3554 | * Check SLI validation that all the transfer was actually done | |
3555 | * (fcpi_parm should be zero). Apply check only to reads. | |
3556 | */ | |
eee8877e | 3557 | } else if (fcpi_parm && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { |
e8b62011 | 3558 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
e2a0a9d6 | 3559 | "9029 FCP Read Check Error Data: " |
eee8877e | 3560 | "x%x x%x x%x x%x x%x\n", |
e8b62011 JS |
3561 | be32_to_cpu(fcpcmd->fcpDl), |
3562 | be32_to_cpu(fcprsp->rspResId), | |
eee8877e JS |
3563 | fcpi_parm, cmnd->cmnd[0], scsi_status); |
3564 | switch (scsi_status) { | |
3565 | case SAM_STAT_GOOD: | |
3566 | case SAM_STAT_CHECK_CONDITION: | |
3567 | /* Fabric dropped a data frame. Fail any successful | |
3568 | * command in which we detected dropped frames. | |
3569 | * A status of good or some check conditions could | |
3570 | * be considered a successful command. | |
3571 | */ | |
3572 | host_status = DID_ERROR; | |
3573 | break; | |
3574 | } | |
a0b4f78f | 3575 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 3576 | } |
3577 | ||
3578 | out: | |
3579 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 3580 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e | 3581 | } |
3582 | ||
9bad7671 | 3583 | /** |
3621a710 | 3584 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
3585 | * @phba: The Hba for which this call is being executed. |
3586 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 3587 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
3588 | * |
3589 | * This routine assigns scsi command result by looking into response IOCB | |
3590 | * status field appropriately. This routine handles QUEUE FULL condition as | |
3591 | * well by ramping down device queue depth. | |
3592 | **/ | |
dea3101e | 3593 | static void |
3594 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
3595 | struct lpfc_iocbq *pIocbOut) | |
3596 | { | |
3597 | struct lpfc_scsi_buf *lpfc_cmd = | |
3598 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 3599 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 3600 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
3601 | struct lpfc_nodelist *pnode = rdata->pnode; | |
75baf696 | 3602 | struct scsi_cmnd *cmd; |
445cf4f4 | 3603 | int result; |
a257bf90 | 3604 | struct scsi_device *tmp_sdev; |
5ffc266e | 3605 | int depth; |
fa61a54e | 3606 | unsigned long flags; |
ea2151b4 | 3607 | struct lpfc_fast_path_event *fast_path_evt; |
75baf696 | 3608 | struct Scsi_Host *shost; |
a257bf90 | 3609 | uint32_t queue_depth, scsi_id; |
73d91e50 | 3610 | uint32_t logit = LOG_FCP; |
dea3101e | 3611 | |
75baf696 JS |
3612 | /* Sanity check on return of outstanding command */ |
3613 | if (!(lpfc_cmd->pCmd)) | |
3614 | return; | |
3615 | cmd = lpfc_cmd->pCmd; | |
3616 | shost = cmd->device->host; | |
3617 | ||
dea3101e | 3618 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; |
3619 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
341af102 JS |
3620 | /* pick up SLI4 exhange busy status from HBA */ |
3621 | lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; | |
3622 | ||
9a6b09c0 JS |
3623 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
3624 | if (lpfc_cmd->prot_data_type) { | |
3625 | struct scsi_dif_tuple *src = NULL; | |
3626 | ||
3627 | src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; | |
3628 | /* | |
3629 | * Used to restore any changes to protection | |
3630 | * data for error injection. | |
3631 | */ | |
3632 | switch (lpfc_cmd->prot_data_type) { | |
3633 | case LPFC_INJERR_REFTAG: | |
3634 | src->ref_tag = | |
3635 | lpfc_cmd->prot_data; | |
3636 | break; | |
3637 | case LPFC_INJERR_APPTAG: | |
3638 | src->app_tag = | |
3639 | (uint16_t)lpfc_cmd->prot_data; | |
3640 | break; | |
3641 | case LPFC_INJERR_GUARD: | |
3642 | src->guard_tag = | |
3643 | (uint16_t)lpfc_cmd->prot_data; | |
3644 | break; | |
3645 | default: | |
3646 | break; | |
3647 | } | |
3648 | ||
3649 | lpfc_cmd->prot_data = 0; | |
3650 | lpfc_cmd->prot_data_type = 0; | |
3651 | lpfc_cmd->prot_data_segment = NULL; | |
3652 | } | |
3653 | #endif | |
109f6ed0 JS |
3654 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
3655 | atomic_dec(&pnode->cmd_pending); | |
dea3101e | 3656 | |
3657 | if (lpfc_cmd->status) { | |
3658 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
3659 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
3660 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
3661 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
3662 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
73d91e50 JS |
3663 | if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR |
3664 | && !lpfc_cmd->fcp_rsp->rspStatus3 | |
3665 | && (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) | |
3666 | && !(phba->cfg_log_verbose & LOG_FCP_UNDER)) | |
3667 | logit = 0; | |
3668 | else | |
3669 | logit = LOG_FCP | LOG_FCP_UNDER; | |
3670 | lpfc_printf_vlog(vport, KERN_WARNING, logit, | |
3671 | "9030 FCP cmd x%x failed <%d/%d> " | |
5a0d80fc JS |
3672 | "status: x%x result: x%x " |
3673 | "sid: x%x did: x%x oxid: x%x " | |
3674 | "Data: x%x x%x\n", | |
73d91e50 JS |
3675 | cmd->cmnd[0], |
3676 | cmd->device ? cmd->device->id : 0xffff, | |
3677 | cmd->device ? cmd->device->lun : 0xffff, | |
3678 | lpfc_cmd->status, lpfc_cmd->result, | |
5a0d80fc JS |
3679 | vport->fc_myDID, pnode->nlp_DID, |
3680 | phba->sli_rev == LPFC_SLI_REV4 ? | |
3681 | lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, | |
73d91e50 JS |
3682 | pIocbOut->iocb.ulpContext, |
3683 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 3684 | |
3685 | switch (lpfc_cmd->status) { | |
3686 | case IOSTAT_FCP_RSP_ERROR: | |
3687 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 3688 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 3689 | break; |
3690 | case IOSTAT_NPORT_BSY: | |
3691 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 3692 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
3693 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
3694 | if (!fast_path_evt) | |
3695 | break; | |
3696 | fast_path_evt->un.fabric_evt.event_type = | |
3697 | FC_REG_FABRIC_EVENT; | |
3698 | fast_path_evt->un.fabric_evt.subcategory = | |
3699 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
3700 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
3701 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
3702 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
3703 | &pnode->nlp_portname, | |
3704 | sizeof(struct lpfc_name)); | |
3705 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
3706 | &pnode->nlp_nodename, | |
3707 | sizeof(struct lpfc_name)); | |
3708 | } | |
3709 | fast_path_evt->vport = vport; | |
3710 | fast_path_evt->work_evt.evt = | |
3711 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
3712 | spin_lock_irqsave(&phba->hbalock, flags); | |
3713 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
3714 | &phba->work_list); | |
3715 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
3716 | lpfc_worker_wake_up(phba); | |
dea3101e | 3717 | break; |
92d7f7b0 | 3718 | case IOSTAT_LOCAL_REJECT: |
1151e3ec | 3719 | case IOSTAT_REMOTE_STOP: |
ab56dc2e JS |
3720 | if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || |
3721 | lpfc_cmd->result == | |
3722 | IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || | |
3723 | lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || | |
3724 | lpfc_cmd->result == | |
3725 | IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { | |
3726 | cmd->result = ScsiResult(DID_NO_CONNECT, 0); | |
3727 | break; | |
3728 | } | |
d7c255b2 | 3729 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 3730 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
b92938b4 JS |
3731 | lpfc_cmd->result == IOERR_ABORT_REQUESTED || |
3732 | lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { | |
92d7f7b0 | 3733 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 3734 | break; |
e2a0a9d6 | 3735 | } |
e2a0a9d6 JS |
3736 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || |
3737 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
3738 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
3739 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
3740 | /* | |
3741 | * This is a response for a BG enabled | |
3742 | * cmd. Parse BG error | |
3743 | */ | |
3744 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
3745 | pIocbOut); | |
3746 | break; | |
3747 | } else { | |
3748 | lpfc_printf_vlog(vport, KERN_WARNING, | |
3749 | LOG_BG, | |
3750 | "9031 non-zero BGSTAT " | |
6a9c52cf | 3751 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
3752 | } |
3753 | } | |
1151e3ec JS |
3754 | if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) |
3755 | && (phba->sli_rev == LPFC_SLI_REV4) | |
3756 | && (pnode && NLP_CHK_NODE_ACT(pnode))) { | |
3757 | /* This IO was aborted by the target, we don't | |
3758 | * know the rxid and because we did not send the | |
3759 | * ABTS we cannot generate and RRQ. | |
3760 | */ | |
3761 | lpfc_set_rrq_active(phba, pnode, | |
ee0f4fe1 JS |
3762 | lpfc_cmd->cur_iocbq.sli4_lxritag, |
3763 | 0, 0); | |
1151e3ec | 3764 | } |
e2a0a9d6 | 3765 | /* else: fall through */ |
dea3101e | 3766 | default: |
3767 | cmd->result = ScsiResult(DID_ERROR, 0); | |
3768 | break; | |
3769 | } | |
3770 | ||
58da1ffb | 3771 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 3772 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
3773 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
3774 | SAM_STAT_BUSY); | |
ab56dc2e | 3775 | } else |
dea3101e | 3776 | cmd->result = ScsiResult(DID_OK, 0); |
dea3101e | 3777 | |
3778 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
3779 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
3780 | ||
e8b62011 JS |
3781 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
3782 | "0710 Iodone <%d/%d> cmd %p, error " | |
3783 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
3784 | cmd->device->id, cmd->device->lun, cmd, | |
3785 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
3786 | scsi_get_resid(cmd)); | |
dea3101e | 3787 | } |
3788 | ||
ea2151b4 | 3789 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 3790 | result = cmd->result; |
977b5a0a JS |
3791 | if (vport->cfg_max_scsicmpl_time && |
3792 | time_after(jiffies, lpfc_cmd->start_time + | |
3793 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 3794 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
3795 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
3796 | if (pnode->cmd_qdepth > | |
3797 | atomic_read(&pnode->cmd_pending) && | |
3798 | (atomic_read(&pnode->cmd_pending) > | |
3799 | LPFC_MIN_TGT_QDEPTH) && | |
3800 | ((cmd->cmnd[0] == READ_10) || | |
3801 | (cmd->cmnd[0] == WRITE_10))) | |
3802 | pnode->cmd_qdepth = | |
3803 | atomic_read(&pnode->cmd_pending); | |
3804 | ||
3805 | pnode->last_change_time = jiffies; | |
3806 | } | |
a257bf90 | 3807 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 3808 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
7dc517df | 3809 | if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) && |
977b5a0a | 3810 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 3811 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 3812 | spin_lock_irqsave(shost->host_lock, flags); |
7dc517df JS |
3813 | depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT |
3814 | / 100; | |
3815 | depth = depth ? depth : 1; | |
3816 | pnode->cmd_qdepth += depth; | |
3817 | if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth) | |
3818 | pnode->cmd_qdepth = vport->cfg_tgt_queue_depth; | |
109f6ed0 | 3819 | pnode->last_change_time = jiffies; |
a257bf90 | 3820 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 3821 | } |
977b5a0a JS |
3822 | } |
3823 | ||
1dcb58e5 | 3824 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
3825 | |
3826 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
3827 | queue_depth = cmd->device->queue_depth; | |
3828 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
3829 | cmd->scsi_done(cmd); |
3830 | ||
b808608b | 3831 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
3832 | /* |
3833 | * If there is a thread waiting for command completion | |
3834 | * wake up the thread. | |
3835 | */ | |
a257bf90 | 3836 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 3837 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
3838 | if (lpfc_cmd->waitq) |
3839 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 3840 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
3841 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
3842 | return; | |
3843 | } | |
3844 | ||
92d7f7b0 | 3845 | if (!result) |
a257bf90 | 3846 | lpfc_rampup_queue_depth(vport, queue_depth); |
92d7f7b0 | 3847 | |
445cf4f4 JSEC |
3848 | /* |
3849 | * Check for queue full. If the lun is reporting queue full, then | |
3850 | * back off the lun queue depth to prevent target overloads. | |
3851 | */ | |
58da1ffb JS |
3852 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
3853 | NLP_CHK_NODE_ACT(pnode)) { | |
a257bf90 JS |
3854 | shost_for_each_device(tmp_sdev, shost) { |
3855 | if (tmp_sdev->id != scsi_id) | |
445cf4f4 JSEC |
3856 | continue; |
3857 | depth = scsi_track_queue_full(tmp_sdev, | |
5ffc266e JS |
3858 | tmp_sdev->queue_depth-1); |
3859 | if (depth <= 0) | |
3860 | continue; | |
e8b62011 JS |
3861 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3862 | "0711 detected queue full - lun queue " | |
3863 | "depth adjusted to %d.\n", depth); | |
ea2151b4 | 3864 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
5ffc266e JS |
3865 | pnode, |
3866 | tmp_sdev->lun, | |
3867 | depth+1, depth); | |
445cf4f4 JSEC |
3868 | } |
3869 | } | |
3870 | ||
fa61a54e JS |
3871 | /* |
3872 | * If there is a thread waiting for command completion | |
3873 | * wake up the thread. | |
3874 | */ | |
a257bf90 | 3875 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 3876 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
3877 | if (lpfc_cmd->waitq) |
3878 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 3879 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 3880 | |
0bd4ca25 | 3881 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 3882 | } |
3883 | ||
34b02dcd | 3884 | /** |
3621a710 | 3885 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
3886 | * @data: A pointer to the immediate command data portion of the IOCB. |
3887 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
3888 | * | |
3889 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
3890 | * byte swapping the data to big endian format for transmission on the wire. | |
3891 | **/ | |
3892 | static void | |
3893 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
3894 | { | |
3895 | int i, j; | |
3896 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
3897 | i += sizeof(uint32_t), j++) { | |
3898 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
3899 | } | |
3900 | } | |
3901 | ||
9bad7671 | 3902 | /** |
f1126688 | 3903 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
3904 | * @vport: The virtual port for which this call is being executed. |
3905 | * @lpfc_cmd: The scsi command which needs to send. | |
3906 | * @pnode: Pointer to lpfc_nodelist. | |
3907 | * | |
3908 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 3909 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 3910 | **/ |
dea3101e | 3911 | static void |
f1126688 | 3912 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 3913 | struct lpfc_nodelist *pnode) |
dea3101e | 3914 | { |
2e0fef85 | 3915 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 3916 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
3917 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
3918 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
3919 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
3920 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 3921 | char tag[2]; |
dea3101e | 3922 | |
58da1ffb JS |
3923 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
3924 | return; | |
3925 | ||
dea3101e | 3926 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
3927 | /* clear task management bits */ |
3928 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 3929 | |
91886523 JSEC |
3930 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
3931 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 3932 | |
df9e1b59 JS |
3933 | memset(&fcp_cmnd->fcpCdb[0], 0, LPFC_FCP_CDB_LEN); |
3934 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
7e2b19fb JS |
3935 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
3936 | switch (tag[0]) { | |
dea3101e | 3937 | case HEAD_OF_QUEUE_TAG: |
3938 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
3939 | break; | |
3940 | case ORDERED_QUEUE_TAG: | |
3941 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
3942 | break; | |
3943 | default: | |
3944 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
3945 | break; | |
3946 | } | |
3947 | } else | |
3948 | fcp_cmnd->fcpCntl1 = 0; | |
3949 | ||
3950 | /* | |
3951 | * There are three possibilities here - use scatter-gather segment, use | |
3952 | * the single mapping, or neither. Start the lpfc command prep by | |
3953 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
3954 | * data bde entry. | |
3955 | */ | |
a0b4f78f | 3956 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 3957 | if (datadir == DMA_TO_DEVICE) { |
3958 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
3772a991 JS |
3959 | if (phba->sli_rev < LPFC_SLI_REV4) { |
3960 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
3961 | iocb_cmd->ulpPU = 0; | |
3962 | } else | |
3963 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 3964 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
3965 | phba->fc4OutputRequests++; | |
3966 | } else { | |
3967 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
3968 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 3969 | fcp_cmnd->fcpCntl3 = READ_DATA; |
3970 | phba->fc4InputRequests++; | |
3971 | } | |
3972 | } else { | |
3973 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
3974 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
3975 | iocb_cmd->ulpPU = 0; | |
3976 | fcp_cmnd->fcpCntl3 = 0; | |
3977 | phba->fc4ControlRequests++; | |
3978 | } | |
e2a0a9d6 JS |
3979 | if (phba->sli_rev == 3 && |
3980 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 3981 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 3982 | /* |
3983 | * Finish initializing those IOCB fields that are independent | |
3984 | * of the scsi_cmnd request_buffer | |
3985 | */ | |
3986 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
6d368e53 JS |
3987 | if (phba->sli_rev == LPFC_SLI_REV4) |
3988 | piocbq->iocb.ulpContext = | |
3989 | phba->sli4_hba.rpi_ids[pnode->nlp_rpi]; | |
dea3101e | 3990 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) |
3991 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
3992 | else |
3993 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e | 3994 | |
3995 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
3996 | piocbq->context1 = lpfc_cmd; | |
3997 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
3998 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 3999 | piocbq->vport = vport; |
dea3101e | 4000 | } |
4001 | ||
da0436e9 | 4002 | /** |
6d368e53 | 4003 | * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
4004 | * @vport: The virtual port for which this call is being executed. |
4005 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
4006 | * @lun: Logical unit number. | |
4007 | * @task_mgmt_cmd: SCSI task management command. | |
4008 | * | |
3772a991 JS |
4009 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
4010 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
4011 | * |
4012 | * Return codes: | |
4013 | * 0 - Error | |
4014 | * 1 - Success | |
4015 | **/ | |
dea3101e | 4016 | static int |
f1126688 | 4017 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 4018 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 4019 | unsigned int lun, |
dea3101e | 4020 | uint8_t task_mgmt_cmd) |
4021 | { | |
dea3101e | 4022 | struct lpfc_iocbq *piocbq; |
4023 | IOCB_t *piocb; | |
4024 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 4025 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 4026 | struct lpfc_nodelist *ndlp = rdata->pnode; |
4027 | ||
58da1ffb JS |
4028 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
4029 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 4030 | return 0; |
dea3101e | 4031 | |
dea3101e | 4032 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
4033 | piocbq->vport = vport; |
4034 | ||
dea3101e | 4035 | piocb = &piocbq->iocb; |
4036 | ||
4037 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
4038 | /* Clear out any old data in the FCP command area */ |
4039 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
4040 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 4041 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
4042 | if (vport->phba->sli_rev == 3 && |
4043 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 4044 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 4045 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 4046 | piocb->ulpContext = ndlp->nlp_rpi; |
6d368e53 JS |
4047 | if (vport->phba->sli_rev == LPFC_SLI_REV4) { |
4048 | piocb->ulpContext = | |
4049 | vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; | |
4050 | } | |
dea3101e | 4051 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { |
4052 | piocb->ulpFCP2Rcvy = 1; | |
4053 | } | |
4054 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
4055 | ||
4056 | /* ulpTimeout is only one byte */ | |
4057 | if (lpfc_cmd->timeout > 0xff) { | |
4058 | /* | |
4059 | * Do not timeout the command at the firmware level. | |
4060 | * The driver will provide the timeout mechanism. | |
4061 | */ | |
4062 | piocb->ulpTimeout = 0; | |
f1126688 | 4063 | } else |
dea3101e | 4064 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 4065 | |
f1126688 JS |
4066 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
4067 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 4068 | |
f1126688 | 4069 | return 1; |
3772a991 JS |
4070 | } |
4071 | ||
4072 | /** | |
25985edc | 4073 | * lpfc_scsi_api_table_setup - Set up scsi api function jump table |
3772a991 JS |
4074 | * @phba: The hba struct for which this call is being executed. |
4075 | * @dev_grp: The HBA PCI-Device group number. | |
4076 | * | |
4077 | * This routine sets up the SCSI interface API function jump table in @phba | |
4078 | * struct. | |
4079 | * Returns: 0 - success, -ENODEV - failure. | |
4080 | **/ | |
4081 | int | |
4082 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
4083 | { | |
4084 | ||
f1126688 JS |
4085 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
4086 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
f1126688 | 4087 | |
3772a991 JS |
4088 | switch (dev_grp) { |
4089 | case LPFC_PCI_DEV_LP: | |
4090 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
4091 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
acd6859b | 4092 | phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3; |
3772a991 | 4093 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
19ca7609 | 4094 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; |
3772a991 | 4095 | break; |
da0436e9 JS |
4096 | case LPFC_PCI_DEV_OC: |
4097 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
4098 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
acd6859b | 4099 | phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4; |
da0436e9 | 4100 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
19ca7609 | 4101 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; |
da0436e9 | 4102 | break; |
3772a991 JS |
4103 | default: |
4104 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
4105 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
4106 | dev_grp); | |
4107 | return -ENODEV; | |
4108 | break; | |
4109 | } | |
3772a991 | 4110 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; |
84d1b006 | 4111 | phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; |
3772a991 JS |
4112 | return 0; |
4113 | } | |
4114 | ||
9bad7671 | 4115 | /** |
3621a710 | 4116 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
4117 | * @phba: The Hba for which this call is being executed. |
4118 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
4119 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
4120 | * | |
4121 | * This routine is IOCB completion routine for device reset and target reset | |
4122 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
4123 | **/ | |
7054a606 JS |
4124 | static void |
4125 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
4126 | struct lpfc_iocbq *cmdiocbq, | |
4127 | struct lpfc_iocbq *rspiocbq) | |
4128 | { | |
4129 | struct lpfc_scsi_buf *lpfc_cmd = | |
4130 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
4131 | if (lpfc_cmd) | |
4132 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4133 | return; | |
4134 | } | |
4135 | ||
9bad7671 | 4136 | /** |
3621a710 | 4137 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
4138 | * @host: The scsi host for which this call is being executed. |
4139 | * | |
4140 | * This routine provides module information about hba. | |
4141 | * | |
4142 | * Reutrn code: | |
4143 | * Pointer to char - Success. | |
4144 | **/ | |
dea3101e | 4145 | const char * |
4146 | lpfc_info(struct Scsi_Host *host) | |
4147 | { | |
2e0fef85 JS |
4148 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
4149 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 4150 | int len; |
4151 | static char lpfcinfobuf[384]; | |
4152 | ||
4153 | memset(lpfcinfobuf,0,384); | |
4154 | if (phba && phba->pcidev){ | |
4155 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
4156 | len = strlen(lpfcinfobuf); | |
4157 | snprintf(lpfcinfobuf + len, | |
4158 | 384-len, | |
4159 | " on PCI bus %02x device %02x irq %d", | |
4160 | phba->pcidev->bus->number, | |
4161 | phba->pcidev->devfn, | |
4162 | phba->pcidev->irq); | |
4163 | len = strlen(lpfcinfobuf); | |
4164 | if (phba->Port[0]) { | |
4165 | snprintf(lpfcinfobuf + len, | |
4166 | 384-len, | |
4167 | " port %s", | |
4168 | phba->Port); | |
4169 | } | |
65467b6b JS |
4170 | len = strlen(lpfcinfobuf); |
4171 | if (phba->sli4_hba.link_state.logical_speed) { | |
4172 | snprintf(lpfcinfobuf + len, | |
4173 | 384-len, | |
4174 | " Logical Link Speed: %d Mbps", | |
4175 | phba->sli4_hba.link_state.logical_speed * 10); | |
4176 | } | |
dea3101e | 4177 | } |
4178 | return lpfcinfobuf; | |
4179 | } | |
4180 | ||
9bad7671 | 4181 | /** |
3621a710 | 4182 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
4183 | * @phba: The Hba for which this call is being executed. |
4184 | * | |
4185 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
4186 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
4187 | **/ | |
875fbdfe JSEC |
4188 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
4189 | { | |
4190 | unsigned long poll_tmo_expires = | |
4191 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
4192 | ||
4193 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
4194 | mod_timer(&phba->fcp_poll_timer, | |
4195 | poll_tmo_expires); | |
4196 | } | |
4197 | ||
9bad7671 | 4198 | /** |
3621a710 | 4199 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
4200 | * @phba: The Hba for which this call is being executed. |
4201 | * | |
4202 | * This routine starts the fcp_poll_timer of @phba. | |
4203 | **/ | |
875fbdfe JSEC |
4204 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
4205 | { | |
4206 | lpfc_poll_rearm_timer(phba); | |
4207 | } | |
4208 | ||
9bad7671 | 4209 | /** |
3621a710 | 4210 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
4211 | * @ptr: Map to lpfc_hba data structure pointer. |
4212 | * | |
4213 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
4214 | * and FCP Ring interrupt is disable. | |
4215 | **/ | |
4216 | ||
875fbdfe JSEC |
4217 | void lpfc_poll_timeout(unsigned long ptr) |
4218 | { | |
2e0fef85 | 4219 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
4220 | |
4221 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
4222 | lpfc_sli_handle_fast_ring_event(phba, |
4223 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
4224 | ||
875fbdfe JSEC |
4225 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4226 | lpfc_poll_rearm_timer(phba); | |
4227 | } | |
875fbdfe JSEC |
4228 | } |
4229 | ||
9bad7671 | 4230 | /** |
3621a710 | 4231 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
4232 | * @cmnd: Pointer to scsi_cmnd data structure. |
4233 | * @done: Pointer to done routine. | |
4234 | * | |
4235 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
4236 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
4237 | * The @done callback is invoked after driver finished processing the command. | |
4238 | * | |
4239 | * Return value : | |
4240 | * 0 - Success | |
4241 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
4242 | **/ | |
dea3101e | 4243 | static int |
f281233d | 4244 | lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) |
dea3101e | 4245 | { |
2e0fef85 JS |
4246 | struct Scsi_Host *shost = cmnd->device->host; |
4247 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4248 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 4249 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1c6f4ef5 | 4250 | struct lpfc_nodelist *ndlp; |
0bd4ca25 | 4251 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 4252 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 4253 | int err; |
dea3101e | 4254 | |
19a7b4ae JSEC |
4255 | err = fc_remote_port_chkready(rport); |
4256 | if (err) { | |
4257 | cmnd->result = err; | |
dea3101e | 4258 | goto out_fail_command; |
4259 | } | |
1c6f4ef5 | 4260 | ndlp = rdata->pnode; |
dea3101e | 4261 | |
bf08611b | 4262 | if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && |
acd6859b | 4263 | (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { |
e2a0a9d6 | 4264 | |
6a9c52cf JS |
4265 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
4266 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
4267 | " op:%02x str=%s without registering for" | |
4268 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
4269 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
4270 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
4271 | goto out_fail_command; | |
4272 | } | |
4273 | ||
dea3101e | 4274 | /* |
19a7b4ae JSEC |
4275 | * Catch race where our node has transitioned, but the |
4276 | * transport is still transitioning. | |
dea3101e | 4277 | */ |
b522d7d4 | 4278 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
f55ca84d | 4279 | cmnd->result = ScsiResult(DID_IMM_RETRY, 0); |
b522d7d4 JS |
4280 | goto out_fail_command; |
4281 | } | |
7dc517df | 4282 | if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) |
3496343d | 4283 | goto out_tgt_busy; |
a93ce024 | 4284 | |
19ca7609 | 4285 | lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp); |
dea3101e | 4286 | if (lpfc_cmd == NULL) { |
eaf15d5b | 4287 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 4288 | |
e8b62011 JS |
4289 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
4290 | "0707 driver's buffer pool is empty, " | |
4291 | "IO busied\n"); | |
dea3101e | 4292 | goto out_host_busy; |
4293 | } | |
4294 | ||
4295 | /* | |
4296 | * Store the midlayer's command structure for the completion phase | |
4297 | * and complete the command initialization. | |
4298 | */ | |
4299 | lpfc_cmd->pCmd = cmnd; | |
4300 | lpfc_cmd->rdata = rdata; | |
4301 | lpfc_cmd->timeout = 0; | |
977b5a0a | 4302 | lpfc_cmd->start_time = jiffies; |
dea3101e | 4303 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
4304 | cmnd->scsi_done = done; | |
4305 | ||
e2a0a9d6 | 4306 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf JS |
4307 | if (vport->phba->cfg_enable_bg) { |
4308 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
9a6b09c0 JS |
4309 | "9033 BLKGRD: rcvd protected cmd:%02x op=%s " |
4310 | "guard=%s\n", cmnd->cmnd[0], | |
4311 | dif_op_str[scsi_get_prot_op(cmnd)], | |
4312 | dif_grd_str[scsi_host_get_guard(shost)]); | |
6a9c52cf JS |
4313 | if (cmnd->cmnd[0] == READ_10) |
4314 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 4315 | "9035 BLKGRD: READ @ sector %llu, " |
9a6b09c0 | 4316 | "cnt %u, rpt %d\n", |
83096ebf | 4317 | (unsigned long long)scsi_get_lba(cmnd), |
9a6b09c0 JS |
4318 | blk_rq_sectors(cmnd->request), |
4319 | (cmnd->cmnd[1]>>5)); | |
6a9c52cf JS |
4320 | else if (cmnd->cmnd[0] == WRITE_10) |
4321 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 4322 | "9036 BLKGRD: WRITE @ sector %llu, " |
9a6b09c0 | 4323 | "cnt %u, wpt %d\n", |
87b5c328 | 4324 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 4325 | blk_rq_sectors(cmnd->request), |
9a6b09c0 | 4326 | (cmnd->cmnd[1]>>5)); |
6a9c52cf | 4327 | } |
e2a0a9d6 JS |
4328 | |
4329 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
4330 | } else { | |
6a9c52cf | 4331 | if (vport->phba->cfg_enable_bg) { |
e2a0a9d6 | 4332 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
9a6b09c0 JS |
4333 | "9038 BLKGRD: rcvd unprotected cmd:" |
4334 | "%02x op=%s guard=%s\n", cmnd->cmnd[0], | |
4335 | dif_op_str[scsi_get_prot_op(cmnd)], | |
4336 | dif_grd_str[scsi_host_get_guard(shost)]); | |
6a9c52cf JS |
4337 | if (cmnd->cmnd[0] == READ_10) |
4338 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
4339 | "9040 dbg: READ @ sector %llu, " | |
9a6b09c0 | 4340 | "cnt %u, rpt %d\n", |
6a9c52cf | 4341 | (unsigned long long)scsi_get_lba(cmnd), |
9a6b09c0 JS |
4342 | blk_rq_sectors(cmnd->request), |
4343 | (cmnd->cmnd[1]>>5)); | |
6a9c52cf JS |
4344 | else if (cmnd->cmnd[0] == WRITE_10) |
4345 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
9a6b09c0 JS |
4346 | "9041 dbg: WRITE @ sector %llu, " |
4347 | "cnt %u, wpt %d\n", | |
4348 | (unsigned long long)scsi_get_lba(cmnd), | |
4349 | blk_rq_sectors(cmnd->request), | |
4350 | (cmnd->cmnd[1]>>5)); | |
6a9c52cf | 4351 | } |
e2a0a9d6 JS |
4352 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
4353 | } | |
4354 | ||
dea3101e | 4355 | if (err) |
4356 | goto out_host_busy_free_buf; | |
4357 | ||
2e0fef85 | 4358 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 4359 | |
977b5a0a | 4360 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 4361 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 4362 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
4363 | if (err) { |
4364 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 4365 | goto out_host_busy_free_buf; |
eaf15d5b | 4366 | } |
875fbdfe | 4367 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
4368 | spin_unlock(shost->host_lock); |
4369 | lpfc_sli_handle_fast_ring_event(phba, | |
4370 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
4371 | ||
4372 | spin_lock(shost->host_lock); | |
875fbdfe JSEC |
4373 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4374 | lpfc_poll_rearm_timer(phba); | |
4375 | } | |
4376 | ||
dea3101e | 4377 | return 0; |
4378 | ||
4379 | out_host_busy_free_buf: | |
bcf4dbfa | 4380 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 4381 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 4382 | out_host_busy: |
4383 | return SCSI_MLQUEUE_HOST_BUSY; | |
4384 | ||
3496343d MC |
4385 | out_tgt_busy: |
4386 | return SCSI_MLQUEUE_TARGET_BUSY; | |
4387 | ||
dea3101e | 4388 | out_fail_command: |
4389 | done(cmnd); | |
4390 | return 0; | |
4391 | } | |
4392 | ||
f281233d JG |
4393 | static DEF_SCSI_QCMD(lpfc_queuecommand) |
4394 | ||
9bad7671 | 4395 | /** |
3621a710 | 4396 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
4397 | * @cmnd: Pointer to scsi_cmnd data structure. |
4398 | * | |
4399 | * This routine aborts @cmnd pending in base driver. | |
4400 | * | |
4401 | * Return code : | |
4402 | * 0x2003 - Error | |
4403 | * 0x2002 - Success | |
4404 | **/ | |
dea3101e | 4405 | static int |
63c59c3b | 4406 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 4407 | { |
2e0fef85 JS |
4408 | struct Scsi_Host *shost = cmnd->device->host; |
4409 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4410 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
4411 | struct lpfc_iocbq *iocb; |
4412 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 4413 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 4414 | IOCB_t *cmd, *icmd; |
3a70730a | 4415 | int ret = SUCCESS, status = 0; |
fa61a54e | 4416 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 4417 | |
3a70730a JS |
4418 | status = fc_block_scsi_eh(cmnd); |
4419 | if (status) | |
4420 | return status; | |
4f2e66c6 JS |
4421 | |
4422 | spin_lock_irq(&phba->hbalock); | |
4423 | /* driver queued commands are in process of being flushed */ | |
4424 | if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) { | |
4425 | spin_unlock_irq(&phba->hbalock); | |
4426 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
4427 | "3168 SCSI Layer abort requested I/O has been " | |
4428 | "flushed by LLD.\n"); | |
4429 | return FAILED; | |
4430 | } | |
4431 | ||
0bd4ca25 | 4432 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
eee8877e | 4433 | if (!lpfc_cmd) { |
4f2e66c6 | 4434 | spin_unlock_irq(&phba->hbalock); |
eee8877e JS |
4435 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4436 | "2873 SCSI Layer I/O Abort Request IO CMPL Status " | |
5cd049a5 | 4437 | "x%x ID %d LUN %d\n", |
3a70730a | 4438 | SUCCESS, cmnd->device->id, cmnd->device->lun); |
eee8877e JS |
4439 | return SUCCESS; |
4440 | } | |
dea3101e | 4441 | |
4f2e66c6 JS |
4442 | iocb = &lpfc_cmd->cur_iocbq; |
4443 | /* the command is in process of being cancelled */ | |
4444 | if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { | |
4445 | spin_unlock_irq(&phba->hbalock); | |
4446 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
4447 | "3169 SCSI Layer abort requested I/O has been " | |
4448 | "cancelled by LLD.\n"); | |
4449 | return FAILED; | |
4450 | } | |
0bd4ca25 JSEC |
4451 | /* |
4452 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
4453 | * points to a different SCSI command, then the driver has | |
4454 | * already completed this command, but the midlayer did not | |
4f2e66c6 | 4455 | * see the completion before the eh fired. Just return SUCCESS. |
0bd4ca25 | 4456 | */ |
4f2e66c6 JS |
4457 | if (lpfc_cmd->pCmd != cmnd) { |
4458 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
4459 | "3170 SCSI Layer abort requested I/O has been " | |
4460 | "completed by LLD.\n"); | |
4461 | goto out_unlock; | |
4462 | } | |
dea3101e | 4463 | |
0bd4ca25 | 4464 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 4465 | |
4f2e66c6 | 4466 | abtsiocb = __lpfc_sli_get_iocbq(phba); |
0bd4ca25 JSEC |
4467 | if (abtsiocb == NULL) { |
4468 | ret = FAILED; | |
4f2e66c6 | 4469 | goto out_unlock; |
dea3101e | 4470 | } |
4471 | ||
dea3101e | 4472 | /* |
0bd4ca25 JSEC |
4473 | * The scsi command can not be in txq and it is in flight because the |
4474 | * pCmd is still pointig at the SCSI command we have to abort. There | |
4475 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 4476 | */ |
dea3101e | 4477 | |
0bd4ca25 JSEC |
4478 | cmd = &iocb->iocb; |
4479 | icmd = &abtsiocb->iocb; | |
4480 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
4481 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
4482 | if (phba->sli_rev == LPFC_SLI_REV4) |
4483 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
4484 | else | |
4485 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 4486 | |
0bd4ca25 JSEC |
4487 | icmd->ulpLe = 1; |
4488 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
4489 | |
4490 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
4491 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
341af102 | 4492 | abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
5ffc266e | 4493 | |
2e0fef85 | 4494 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
4495 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
4496 | else | |
4497 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 4498 | |
0bd4ca25 | 4499 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 4500 | abtsiocb->vport = vport; |
4f2e66c6 JS |
4501 | /* no longer need the lock after this point */ |
4502 | spin_unlock_irq(&phba->hbalock); | |
4503 | ||
3772a991 JS |
4504 | if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) == |
4505 | IOCB_ERROR) { | |
0bd4ca25 JSEC |
4506 | lpfc_sli_release_iocbq(phba, abtsiocb); |
4507 | ret = FAILED; | |
4508 | goto out; | |
4509 | } | |
dea3101e | 4510 | |
875fbdfe | 4511 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
4512 | lpfc_sli_handle_fast_ring_event(phba, |
4513 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 4514 | |
fa61a54e | 4515 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 4516 | /* Wait for abort to complete */ |
fa61a54e JS |
4517 | wait_event_timeout(waitq, |
4518 | (lpfc_cmd->pCmd != cmnd), | |
4519 | (2*vport->cfg_devloss_tmo*HZ)); | |
fa61a54e | 4520 | lpfc_cmd->waitq = NULL; |
dea3101e | 4521 | |
0bd4ca25 JSEC |
4522 | if (lpfc_cmd->pCmd == cmnd) { |
4523 | ret = FAILED; | |
e8b62011 JS |
4524 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
4525 | "0748 abort handler timed out waiting " | |
4526 | "for abort to complete: ret %#x, ID %d, " | |
5cd049a5 CH |
4527 | "LUN %d\n", |
4528 | ret, cmnd->device->id, cmnd->device->lun); | |
dea3101e | 4529 | } |
4f2e66c6 | 4530 | goto out; |
dea3101e | 4531 | |
4f2e66c6 JS |
4532 | out_unlock: |
4533 | spin_unlock_irq(&phba->hbalock); | |
4534 | out: | |
e8b62011 JS |
4535 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4536 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
5cd049a5 CH |
4537 | "LUN %d\n", ret, cmnd->device->id, |
4538 | cmnd->device->lun); | |
63c59c3b | 4539 | return ret; |
8fa728a2 JG |
4540 | } |
4541 | ||
bbb9d180 JS |
4542 | static char * |
4543 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
4544 | { | |
4545 | switch (task_mgmt_cmd) { | |
4546 | case FCP_ABORT_TASK_SET: | |
4547 | return "ABORT_TASK_SET"; | |
4548 | case FCP_CLEAR_TASK_SET: | |
4549 | return "FCP_CLEAR_TASK_SET"; | |
4550 | case FCP_BUS_RESET: | |
4551 | return "FCP_BUS_RESET"; | |
4552 | case FCP_LUN_RESET: | |
4553 | return "FCP_LUN_RESET"; | |
4554 | case FCP_TARGET_RESET: | |
4555 | return "FCP_TARGET_RESET"; | |
4556 | case FCP_CLEAR_ACA: | |
4557 | return "FCP_CLEAR_ACA"; | |
4558 | case FCP_TERMINATE_TASK: | |
4559 | return "FCP_TERMINATE_TASK"; | |
4560 | default: | |
4561 | return "unknown"; | |
4562 | } | |
4563 | } | |
4564 | ||
9bad7671 | 4565 | /** |
bbb9d180 JS |
4566 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
4567 | * @vport: The virtual port for which this call is being executed. | |
4568 | * @rdata: Pointer to remote port local data | |
4569 | * @tgt_id: Target ID of remote device. | |
4570 | * @lun_id: Lun number for the TMF | |
4571 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 4572 | * |
bbb9d180 JS |
4573 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
4574 | * a remote port. | |
9bad7671 | 4575 | * |
bbb9d180 JS |
4576 | * Return Code: |
4577 | * 0x2003 - Error | |
4578 | * 0x2002 - Success. | |
9bad7671 | 4579 | **/ |
dea3101e | 4580 | static int |
bbb9d180 JS |
4581 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
4582 | unsigned tgt_id, unsigned int lun_id, | |
4583 | uint8_t task_mgmt_cmd) | |
dea3101e | 4584 | { |
2e0fef85 | 4585 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 4586 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
4587 | struct lpfc_iocbq *iocbq; |
4588 | struct lpfc_iocbq *iocbqrsp; | |
5989b8d4 | 4589 | struct lpfc_nodelist *pnode = rdata->pnode; |
bbb9d180 | 4590 | int ret; |
915caaaf | 4591 | int status; |
dea3101e | 4592 | |
5989b8d4 | 4593 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 4594 | return FAILED; |
bbb9d180 | 4595 | |
19ca7609 | 4596 | lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode); |
dea3101e | 4597 | if (lpfc_cmd == NULL) |
915caaaf | 4598 | return FAILED; |
dea3101e | 4599 | lpfc_cmd->timeout = 60; |
0b18ac42 | 4600 | lpfc_cmd->rdata = rdata; |
dea3101e | 4601 | |
bbb9d180 JS |
4602 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
4603 | task_mgmt_cmd); | |
915caaaf JS |
4604 | if (!status) { |
4605 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4606 | return FAILED; | |
4607 | } | |
dea3101e | 4608 | |
bbb9d180 | 4609 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 4610 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
4611 | if (iocbqrsp == NULL) { |
4612 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4613 | return FAILED; | |
4614 | } | |
bbb9d180 | 4615 | |
e8b62011 | 4616 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
bbb9d180 | 4617 | "0702 Issue %s to TGT %d LUN %d " |
6d368e53 | 4618 | "rpi x%x nlp_flag x%x Data: x%x x%x\n", |
bbb9d180 | 4619 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, |
6d368e53 JS |
4620 | pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, |
4621 | iocbq->iocb_flag); | |
bbb9d180 | 4622 | |
3772a991 | 4623 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 4624 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
bbb9d180 JS |
4625 | if (status != IOCB_SUCCESS) { |
4626 | if (status == IOCB_TIMEDOUT) { | |
4627 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
4628 | ret = TIMEOUT_ERROR; | |
4629 | } else | |
915caaaf | 4630 | ret = FAILED; |
bbb9d180 JS |
4631 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
4632 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
6d368e53 JS |
4633 | "0727 TMF %s to TGT %d LUN %d failed (%d, %d) " |
4634 | "iocb_flag x%x\n", | |
bbb9d180 JS |
4635 | lpfc_taskmgmt_name(task_mgmt_cmd), |
4636 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
6d368e53 JS |
4637 | iocbqrsp->iocb.un.ulpWord[4], |
4638 | iocbq->iocb_flag); | |
2a9bf3d0 JS |
4639 | } else if (status == IOCB_BUSY) |
4640 | ret = FAILED; | |
4641 | else | |
bbb9d180 JS |
4642 | ret = SUCCESS; |
4643 | ||
6175c02a | 4644 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
4645 | |
4646 | if (ret != TIMEOUT_ERROR) | |
4647 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4648 | ||
4649 | return ret; | |
4650 | } | |
4651 | ||
4652 | /** | |
4653 | * lpfc_chk_tgt_mapped - | |
4654 | * @vport: The virtual port to check on | |
4655 | * @cmnd: Pointer to scsi_cmnd data structure. | |
4656 | * | |
4657 | * This routine delays until the scsi target (aka rport) for the | |
4658 | * command exists (is present and logged in) or we declare it non-existent. | |
4659 | * | |
4660 | * Return code : | |
4661 | * 0x2003 - Error | |
4662 | * 0x2002 - Success | |
4663 | **/ | |
4664 | static int | |
4665 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
4666 | { | |
4667 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 4668 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
4669 | unsigned long later; |
4670 | ||
1c6f4ef5 JS |
4671 | if (!rdata) { |
4672 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
4673 | "0797 Tgt Map rport failure: rdata x%p\n", rdata); | |
4674 | return FAILED; | |
4675 | } | |
4676 | pnode = rdata->pnode; | |
bbb9d180 JS |
4677 | /* |
4678 | * If target is not in a MAPPED state, delay until | |
4679 | * target is rediscovered or devloss timeout expires. | |
4680 | */ | |
4681 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
4682 | while (time_after(later, jiffies)) { | |
4683 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
4684 | return FAILED; | |
4685 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
4686 | return SUCCESS; | |
4687 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
4688 | rdata = cmnd->device->hostdata; | |
4689 | if (!rdata) | |
4690 | return FAILED; | |
4691 | pnode = rdata->pnode; | |
4692 | } | |
4693 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
4694 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
4695 | return FAILED; | |
4696 | return SUCCESS; | |
4697 | } | |
4698 | ||
4699 | /** | |
4700 | * lpfc_reset_flush_io_context - | |
4701 | * @vport: The virtual port (scsi_host) for the flush context | |
4702 | * @tgt_id: If aborting by Target contect - specifies the target id | |
4703 | * @lun_id: If aborting by Lun context - specifies the lun id | |
4704 | * @context: specifies the context level to flush at. | |
4705 | * | |
4706 | * After a reset condition via TMF, we need to flush orphaned i/o | |
4707 | * contexts from the adapter. This routine aborts any contexts | |
4708 | * outstanding, then waits for their completions. The wait is | |
4709 | * bounded by devloss_tmo though. | |
4710 | * | |
4711 | * Return code : | |
4712 | * 0x2003 - Error | |
4713 | * 0x2002 - Success | |
4714 | **/ | |
4715 | static int | |
4716 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
4717 | uint64_t lun_id, lpfc_ctx_cmd context) | |
4718 | { | |
4719 | struct lpfc_hba *phba = vport->phba; | |
4720 | unsigned long later; | |
4721 | int cnt; | |
4722 | ||
4723 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 4724 | if (cnt) |
51ef4c26 | 4725 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
bbb9d180 | 4726 | tgt_id, lun_id, context); |
915caaaf JS |
4727 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
4728 | while (time_after(later, jiffies) && cnt) { | |
4729 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 4730 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 4731 | } |
dea3101e | 4732 | if (cnt) { |
e8b62011 | 4733 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
4734 | "0724 I/O flush failure for context %s : cnt x%x\n", |
4735 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
4736 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
4737 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
4738 | cnt); | |
4739 | return FAILED; | |
dea3101e | 4740 | } |
bbb9d180 JS |
4741 | return SUCCESS; |
4742 | } | |
4743 | ||
4744 | /** | |
4745 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
4746 | * @cmnd: Pointer to scsi_cmnd data structure. | |
4747 | * | |
4748 | * This routine does a device reset by sending a LUN_RESET task management | |
4749 | * command. | |
4750 | * | |
4751 | * Return code : | |
4752 | * 0x2003 - Error | |
4753 | * 0x2002 - Success | |
4754 | **/ | |
4755 | static int | |
4756 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
4757 | { | |
4758 | struct Scsi_Host *shost = cmnd->device->host; | |
4759 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4760 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 4761 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
4762 | unsigned tgt_id = cmnd->device->id; |
4763 | unsigned int lun_id = cmnd->device->lun; | |
4764 | struct lpfc_scsi_event_header scsi_event; | |
3a70730a | 4765 | int status, ret = SUCCESS; |
bbb9d180 | 4766 | |
1c6f4ef5 JS |
4767 | if (!rdata) { |
4768 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
4769 | "0798 Device Reset rport failure: rdata x%p\n", rdata); | |
4770 | return FAILED; | |
4771 | } | |
4772 | pnode = rdata->pnode; | |
589a52d6 JS |
4773 | status = fc_block_scsi_eh(cmnd); |
4774 | if (status) | |
4775 | return status; | |
bbb9d180 JS |
4776 | |
4777 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
4778 | if (status == FAILED) { | |
4779 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
4780 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
4781 | return FAILED; | |
4782 | } | |
4783 | ||
4784 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
4785 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
4786 | scsi_event.lun = lun_id; | |
4787 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
4788 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
4789 | ||
4790 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
4791 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
4792 | ||
4793 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
4794 | FCP_LUN_RESET); | |
4795 | ||
4796 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
4797 | "0713 SCSI layer issued Device Reset (%d, %d) " | |
4798 | "return x%x\n", tgt_id, lun_id, status); | |
4799 | ||
4800 | /* | |
4801 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
4802 | * or if the TMF failed, they may be in an indeterminate state. | |
4803 | * So, continue on. | |
4804 | * We will report success if all the i/o aborts successfully. | |
4805 | */ | |
3a70730a | 4806 | ret = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, |
bbb9d180 | 4807 | LPFC_CTX_LUN); |
3a70730a | 4808 | return ret; |
bbb9d180 JS |
4809 | } |
4810 | ||
4811 | /** | |
4812 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
4813 | * @cmnd: Pointer to scsi_cmnd data structure. | |
4814 | * | |
4815 | * This routine does a target reset by sending a TARGET_RESET task management | |
4816 | * command. | |
4817 | * | |
4818 | * Return code : | |
4819 | * 0x2003 - Error | |
4820 | * 0x2002 - Success | |
4821 | **/ | |
4822 | static int | |
4823 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
4824 | { | |
4825 | struct Scsi_Host *shost = cmnd->device->host; | |
4826 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4827 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 4828 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
4829 | unsigned tgt_id = cmnd->device->id; |
4830 | unsigned int lun_id = cmnd->device->lun; | |
4831 | struct lpfc_scsi_event_header scsi_event; | |
3a70730a | 4832 | int status, ret = SUCCESS; |
bbb9d180 | 4833 | |
1c6f4ef5 JS |
4834 | if (!rdata) { |
4835 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
4836 | "0799 Target Reset rport failure: rdata x%p\n", rdata); | |
4837 | return FAILED; | |
4838 | } | |
4839 | pnode = rdata->pnode; | |
589a52d6 JS |
4840 | status = fc_block_scsi_eh(cmnd); |
4841 | if (status) | |
4842 | return status; | |
bbb9d180 JS |
4843 | |
4844 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
4845 | if (status == FAILED) { | |
4846 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
4847 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
4848 | return FAILED; | |
4849 | } | |
4850 | ||
4851 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
4852 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
4853 | scsi_event.lun = 0; | |
4854 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
4855 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
4856 | ||
4857 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
4858 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
4859 | ||
4860 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
4861 | FCP_TARGET_RESET); | |
4862 | ||
4863 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
4864 | "0723 SCSI layer issued Target Reset (%d, %d) " | |
4865 | "return x%x\n", tgt_id, lun_id, status); | |
4866 | ||
4867 | /* | |
4868 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
4869 | * or if the TMF failed, they may be in an indeterminate state. | |
4870 | * So, continue on. | |
4871 | * We will report success if all the i/o aborts successfully. | |
4872 | */ | |
3a70730a JS |
4873 | ret = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, |
4874 | LPFC_CTX_TGT); | |
4875 | return ret; | |
dea3101e | 4876 | } |
4877 | ||
9bad7671 | 4878 | /** |
3621a710 | 4879 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
4880 | * @cmnd: Pointer to scsi_cmnd data structure. |
4881 | * | |
bbb9d180 JS |
4882 | * This routine does target reset to all targets on @cmnd->device->host. |
4883 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 4884 | * |
bbb9d180 JS |
4885 | * Return code : |
4886 | * 0x2003 - Error | |
4887 | * 0x2002 - Success | |
9bad7671 | 4888 | **/ |
94d0e7b8 | 4889 | static int |
7054a606 | 4890 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 4891 | { |
2e0fef85 JS |
4892 | struct Scsi_Host *shost = cmnd->device->host; |
4893 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 4894 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 4895 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
4896 | int match; |
4897 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
4898 | |
4899 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
4900 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
4901 | scsi_event.lun = 0; | |
4902 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
4903 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
4904 | ||
bbb9d180 JS |
4905 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
4906 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 4907 | |
bf08611b JS |
4908 | status = fc_block_scsi_eh(cmnd); |
4909 | if (status) | |
4910 | return status; | |
bbb9d180 | 4911 | |
dea3101e | 4912 | /* |
4913 | * Since the driver manages a single bus device, reset all | |
4914 | * targets known to the driver. Should any target reset | |
4915 | * fail, this routine returns failure to the midlayer. | |
4916 | */ | |
e17da18e | 4917 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 4918 | /* Search for mapped node by target ID */ |
dea3101e | 4919 | match = 0; |
2e0fef85 JS |
4920 | spin_lock_irq(shost->host_lock); |
4921 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
4922 | if (!NLP_CHK_NODE_ACT(ndlp)) |
4923 | continue; | |
685f0bf7 | 4924 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 4925 | ndlp->nlp_sid == i && |
685f0bf7 | 4926 | ndlp->rport) { |
dea3101e | 4927 | match = 1; |
4928 | break; | |
4929 | } | |
4930 | } | |
2e0fef85 | 4931 | spin_unlock_irq(shost->host_lock); |
dea3101e | 4932 | if (!match) |
4933 | continue; | |
bbb9d180 JS |
4934 | |
4935 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
4936 | i, 0, FCP_TARGET_RESET); | |
4937 | ||
4938 | if (status != SUCCESS) { | |
e8b62011 JS |
4939 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
4940 | "0700 Bus Reset on target %d failed\n", | |
4941 | i); | |
915caaaf | 4942 | ret = FAILED; |
dea3101e | 4943 | } |
4944 | } | |
6175c02a | 4945 | /* |
bbb9d180 JS |
4946 | * We have to clean up i/o as : they may be orphaned by the TMFs |
4947 | * above; or if any of the TMFs failed, they may be in an | |
4948 | * indeterminate state. | |
4949 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 4950 | */ |
bbb9d180 JS |
4951 | |
4952 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
4953 | if (status != SUCCESS) | |
0bd4ca25 | 4954 | ret = FAILED; |
bbb9d180 | 4955 | |
e8b62011 JS |
4956 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
4957 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 4958 | return ret; |
4959 | } | |
4960 | ||
27b01b82 JS |
4961 | /** |
4962 | * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt | |
4963 | * @cmnd: Pointer to scsi_cmnd data structure. | |
4964 | * | |
4965 | * This routine does host reset to the adaptor port. It brings the HBA | |
4966 | * offline, performs a board restart, and then brings the board back online. | |
4967 | * The lpfc_offline calls lpfc_sli_hba_down which will abort and local | |
4968 | * reject all outstanding SCSI commands to the host and error returned | |
4969 | * back to SCSI mid-level. As this will be SCSI mid-level's last resort | |
4970 | * of error handling, it will only return error if resetting of the adapter | |
4971 | * is not successful; in all other cases, will return success. | |
4972 | * | |
4973 | * Return code : | |
4974 | * 0x2003 - Error | |
4975 | * 0x2002 - Success | |
4976 | **/ | |
4977 | static int | |
4978 | lpfc_host_reset_handler(struct scsi_cmnd *cmnd) | |
4979 | { | |
4980 | struct Scsi_Host *shost = cmnd->device->host; | |
4981 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4982 | struct lpfc_hba *phba = vport->phba; | |
4983 | int rc, ret = SUCCESS; | |
4984 | ||
618a5230 | 4985 | lpfc_offline_prep(phba, LPFC_MBX_WAIT); |
27b01b82 JS |
4986 | lpfc_offline(phba); |
4987 | rc = lpfc_sli_brdrestart(phba); | |
4988 | if (rc) | |
4989 | ret = FAILED; | |
4990 | lpfc_online(phba); | |
4991 | lpfc_unblock_mgmt_io(phba); | |
4992 | ||
4993 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
4994 | "3172 SCSI layer issued Host Reset Data: x%x\n", ret); | |
4995 | return ret; | |
4996 | } | |
4997 | ||
9bad7671 | 4998 | /** |
3621a710 | 4999 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
5000 | * @sdev: Pointer to scsi_device. |
5001 | * | |
5002 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
5003 | * globally available list of scsi buffers. This routine also makes sure scsi | |
5004 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
5005 | * of scsi buffer exists for the lifetime of the driver. | |
5006 | * | |
5007 | * Return codes: | |
5008 | * non-0 - Error | |
5009 | * 0 - Success | |
5010 | **/ | |
dea3101e | 5011 | static int |
5012 | lpfc_slave_alloc(struct scsi_device *sdev) | |
5013 | { | |
2e0fef85 JS |
5014 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5015 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 5016 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 5017 | uint32_t total = 0; |
dea3101e | 5018 | uint32_t num_to_alloc = 0; |
3772a991 | 5019 | int num_allocated = 0; |
d7c47992 | 5020 | uint32_t sdev_cnt; |
dea3101e | 5021 | |
19a7b4ae | 5022 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 5023 | return -ENXIO; |
5024 | ||
19a7b4ae | 5025 | sdev->hostdata = rport->dd_data; |
d7c47992 | 5026 | sdev_cnt = atomic_inc_return(&phba->sdev_cnt); |
dea3101e | 5027 | |
5028 | /* | |
5029 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
5030 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
5031 | * HBA limit conveyed to the midlayer via the host structure. The |
5032 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
5033 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 5034 | */ |
5035 | total = phba->total_scsi_bufs; | |
3de2a653 | 5036 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 | 5037 | |
d7c47992 JS |
5038 | /* If allocated buffers are enough do nothing */ |
5039 | if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) | |
5040 | return 0; | |
5041 | ||
92d7f7b0 JS |
5042 | /* Allow some exchanges to be available always to complete discovery */ |
5043 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
5044 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
5045 | "0704 At limitation of %d preallocated " | |
5046 | "command buffers\n", total); | |
dea3101e | 5047 | return 0; |
92d7f7b0 JS |
5048 | /* Allow some exchanges to be available always to complete discovery */ |
5049 | } else if (total + num_to_alloc > | |
5050 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
5051 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
5052 | "0705 Allocation request of %d " | |
5053 | "command buffers will exceed max of %d. " | |
5054 | "Reducing allocation request to %d.\n", | |
5055 | num_to_alloc, phba->cfg_hba_queue_depth, | |
5056 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 5057 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
5058 | } | |
3772a991 JS |
5059 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
5060 | if (num_to_alloc != num_allocated) { | |
5061 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
5062 | "0708 Allocation request of %d " | |
5063 | "command buffers did not succeed. " | |
5064 | "Allocated %d buffers.\n", | |
5065 | num_to_alloc, num_allocated); | |
dea3101e | 5066 | } |
1c6f4ef5 JS |
5067 | if (num_allocated > 0) |
5068 | phba->total_scsi_bufs += num_allocated; | |
dea3101e | 5069 | return 0; |
5070 | } | |
5071 | ||
9bad7671 | 5072 | /** |
3621a710 | 5073 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
5074 | * @sdev: Pointer to scsi_device. |
5075 | * | |
5076 | * This routine configures following items | |
5077 | * - Tag command queuing support for @sdev if supported. | |
9bad7671 JS |
5078 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. |
5079 | * | |
5080 | * Return codes: | |
5081 | * 0 - Success | |
5082 | **/ | |
dea3101e | 5083 | static int |
5084 | lpfc_slave_configure(struct scsi_device *sdev) | |
5085 | { | |
2e0fef85 JS |
5086 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5087 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 5088 | |
5089 | if (sdev->tagged_supported) | |
3de2a653 | 5090 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 5091 | else |
3de2a653 | 5092 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 5093 | |
875fbdfe | 5094 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
5095 | lpfc_sli_handle_fast_ring_event(phba, |
5096 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
5097 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
5098 | lpfc_poll_rearm_timer(phba); | |
5099 | } | |
5100 | ||
dea3101e | 5101 | return 0; |
5102 | } | |
5103 | ||
9bad7671 | 5104 | /** |
3621a710 | 5105 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
5106 | * @sdev: Pointer to scsi_device. |
5107 | * | |
5108 | * This routine sets @sdev hostatdata filed to null. | |
5109 | **/ | |
dea3101e | 5110 | static void |
5111 | lpfc_slave_destroy(struct scsi_device *sdev) | |
5112 | { | |
d7c47992 JS |
5113 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5114 | struct lpfc_hba *phba = vport->phba; | |
5115 | atomic_dec(&phba->sdev_cnt); | |
dea3101e | 5116 | sdev->hostdata = NULL; |
5117 | return; | |
5118 | } | |
5119 | ||
92d7f7b0 | 5120 | |
dea3101e | 5121 | struct scsi_host_template lpfc_template = { |
5122 | .module = THIS_MODULE, | |
5123 | .name = LPFC_DRIVER_NAME, | |
5124 | .info = lpfc_info, | |
5125 | .queuecommand = lpfc_queuecommand, | |
5126 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
5127 | .eh_device_reset_handler = lpfc_device_reset_handler, |
5128 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 5129 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
27b01b82 | 5130 | .eh_host_reset_handler = lpfc_host_reset_handler, |
dea3101e | 5131 | .slave_alloc = lpfc_slave_alloc, |
5132 | .slave_configure = lpfc_slave_configure, | |
5133 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 5134 | .scan_finished = lpfc_scan_finished, |
dea3101e | 5135 | .this_id = -1, |
83108bd3 | 5136 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e | 5137 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
5138 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 5139 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 5140 | .max_sectors = 0xFFFF, |
f1c3b0fc | 5141 | .vendor_id = LPFC_NL_VENDOR_ID, |
5ffc266e | 5142 | .change_queue_depth = lpfc_change_queue_depth, |
dea3101e | 5143 | }; |
3de2a653 JS |
5144 | |
5145 | struct scsi_host_template lpfc_vport_template = { | |
5146 | .module = THIS_MODULE, | |
5147 | .name = LPFC_DRIVER_NAME, | |
5148 | .info = lpfc_info, | |
5149 | .queuecommand = lpfc_queuecommand, | |
5150 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
5151 | .eh_device_reset_handler = lpfc_device_reset_handler, |
5152 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
5153 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
5154 | .slave_alloc = lpfc_slave_alloc, | |
5155 | .slave_configure = lpfc_slave_configure, | |
5156 | .slave_destroy = lpfc_slave_destroy, | |
5157 | .scan_finished = lpfc_scan_finished, | |
5158 | .this_id = -1, | |
83108bd3 | 5159 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
5160 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
5161 | .use_clustering = ENABLE_CLUSTERING, | |
5162 | .shost_attrs = lpfc_vport_attrs, | |
5163 | .max_sectors = 0xFFFF, | |
5ffc266e | 5164 | .change_queue_depth = lpfc_change_queue_depth, |
3de2a653 | 5165 | }; |