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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
d8e93df1 | 4 | * Copyright (C) 2004-2009 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e JB |
8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
dea3101e | 21 | #include <linux/pci.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
dea3101e | 23 | #include <linux/interrupt.h> |
a90f5684 | 24 | #include <linux/delay.h> |
e2a0a9d6 | 25 | #include <asm/unaligned.h> |
dea3101e JB |
26 | |
27 | #include <scsi/scsi.h> | |
28 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 29 | #include <scsi/scsi_eh.h> |
dea3101e JB |
30 | #include <scsi/scsi_host.h> |
31 | #include <scsi/scsi_tcq.h> | |
32 | #include <scsi/scsi_transport_fc.h> | |
33 | ||
34 | #include "lpfc_version.h" | |
da0436e9 | 35 | #include "lpfc_hw4.h" |
dea3101e JB |
36 | #include "lpfc_hw.h" |
37 | #include "lpfc_sli.h" | |
da0436e9 | 38 | #include "lpfc_sli4.h" |
ea2151b4 | 39 | #include "lpfc_nl.h" |
dea3101e JB |
40 | #include "lpfc_disc.h" |
41 | #include "lpfc_scsi.h" | |
42 | #include "lpfc.h" | |
43 | #include "lpfc_logmsg.h" | |
44 | #include "lpfc_crtn.h" | |
92d7f7b0 | 45 | #include "lpfc_vport.h" |
dea3101e JB |
46 | |
47 | #define LPFC_RESET_WAIT 2 | |
48 | #define LPFC_ABORT_WAIT 2 | |
49 | ||
e2a0a9d6 JS |
50 | int _dump_buf_done; |
51 | ||
52 | static char *dif_op_str[] = { | |
53 | "SCSI_PROT_NORMAL", | |
54 | "SCSI_PROT_READ_INSERT", | |
55 | "SCSI_PROT_WRITE_STRIP", | |
56 | "SCSI_PROT_READ_STRIP", | |
57 | "SCSI_PROT_WRITE_INSERT", | |
58 | "SCSI_PROT_READ_PASS", | |
59 | "SCSI_PROT_WRITE_PASS", | |
e2a0a9d6 | 60 | }; |
da0436e9 JS |
61 | static void |
62 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
1c6f4ef5 JS |
63 | static void |
64 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
e2a0a9d6 JS |
65 | |
66 | static void | |
6a9c52cf | 67 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
68 | { |
69 | void *src, *dst; | |
70 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
71 | ||
72 | if (!_dump_buf_data) { | |
6a9c52cf JS |
73 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
74 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
75 | __func__); |
76 | return; | |
77 | } | |
78 | ||
79 | ||
80 | if (!sgde) { | |
6a9c52cf JS |
81 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
82 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
83 | return; |
84 | } | |
85 | ||
86 | dst = (void *) _dump_buf_data; | |
87 | while (sgde) { | |
88 | src = sg_virt(sgde); | |
89 | memcpy(dst, src, sgde->length); | |
90 | dst += sgde->length; | |
91 | sgde = sg_next(sgde); | |
92 | } | |
93 | } | |
94 | ||
95 | static void | |
6a9c52cf | 96 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
97 | { |
98 | void *src, *dst; | |
99 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
100 | ||
101 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
102 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
103 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
104 | __func__); |
105 | return; | |
106 | } | |
107 | ||
108 | if (!sgde) { | |
6a9c52cf JS |
109 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
110 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
111 | return; |
112 | } | |
113 | ||
114 | dst = _dump_buf_dif; | |
115 | while (sgde) { | |
116 | src = sg_virt(sgde); | |
117 | memcpy(dst, src, sgde->length); | |
118 | dst += sgde->length; | |
119 | sgde = sg_next(sgde); | |
120 | } | |
121 | } | |
122 | ||
f1126688 JS |
123 | /** |
124 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
125 | * @phba: Pointer to HBA object. | |
126 | * @lpfc_cmd: lpfc scsi command object pointer. | |
127 | * | |
128 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
129 | * set the last bit in the response sge entry. | |
130 | **/ | |
131 | static void | |
132 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
133 | struct lpfc_scsi_buf *lpfc_cmd) | |
134 | { | |
135 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
136 | if (sgl) { | |
137 | sgl += 1; | |
138 | sgl->word2 = le32_to_cpu(sgl->word2); | |
139 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
140 | sgl->word2 = cpu_to_le32(sgl->word2); | |
141 | } | |
142 | } | |
143 | ||
ea2151b4 | 144 | /** |
3621a710 | 145 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
146 | * @phba: Pointer to HBA object. |
147 | * @lpfc_cmd: lpfc scsi command object pointer. | |
148 | * | |
149 | * This function is called when there is a command completion and this | |
150 | * function updates the statistical data for the command completion. | |
151 | **/ | |
152 | static void | |
153 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
154 | { | |
155 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
156 | struct lpfc_nodelist *pnode = rdata->pnode; | |
157 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
158 | unsigned long flags; | |
159 | struct Scsi_Host *shost = cmd->device->host; | |
160 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
161 | unsigned long latency; | |
162 | int i; | |
163 | ||
164 | if (cmd->result) | |
165 | return; | |
166 | ||
9f1e1b50 JS |
167 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
168 | ||
ea2151b4 JS |
169 | spin_lock_irqsave(shost->host_lock, flags); |
170 | if (!vport->stat_data_enabled || | |
171 | vport->stat_data_blocked || | |
172 | !pnode->lat_data || | |
173 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
174 | spin_unlock_irqrestore(shost->host_lock, flags); | |
175 | return; | |
176 | } | |
ea2151b4 JS |
177 | |
178 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
179 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
180 | phba->bucket_step; | |
9f1e1b50 JS |
181 | /* check array subscript bounds */ |
182 | if (i < 0) | |
183 | i = 0; | |
184 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
185 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
186 | } else { |
187 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
188 | if (latency <= (phba->bucket_base + | |
189 | ((1<<i)*phba->bucket_step))) | |
190 | break; | |
191 | } | |
192 | ||
193 | pnode->lat_data[i].cmd_count++; | |
194 | spin_unlock_irqrestore(shost->host_lock, flags); | |
195 | } | |
196 | ||
ea2151b4 | 197 | /** |
3621a710 | 198 | * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event |
ea2151b4 JS |
199 | * @phba: Pointer to HBA context object. |
200 | * @vport: Pointer to vport object. | |
201 | * @ndlp: Pointer to FC node associated with the target. | |
202 | * @lun: Lun number of the scsi device. | |
203 | * @old_val: Old value of the queue depth. | |
204 | * @new_val: New value of the queue depth. | |
205 | * | |
206 | * This function sends an event to the mgmt application indicating | |
207 | * there is a change in the scsi device queue depth. | |
208 | **/ | |
209 | static void | |
210 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
211 | struct lpfc_vport *vport, | |
212 | struct lpfc_nodelist *ndlp, | |
213 | uint32_t lun, | |
214 | uint32_t old_val, | |
215 | uint32_t new_val) | |
216 | { | |
217 | struct lpfc_fast_path_event *fast_path_evt; | |
218 | unsigned long flags; | |
219 | ||
220 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
221 | if (!fast_path_evt) | |
222 | return; | |
223 | ||
224 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
225 | FC_REG_SCSI_EVENT; | |
226 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
227 | LPFC_EVENT_VARQUEDEPTH; | |
228 | ||
229 | /* Report all luns with change in queue depth */ | |
230 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
231 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
232 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
233 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
234 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
235 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
236 | } | |
237 | ||
238 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
239 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
240 | fast_path_evt->vport = vport; | |
241 | ||
242 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
243 | spin_lock_irqsave(&phba->hbalock, flags); | |
244 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
245 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
246 | lpfc_worker_wake_up(phba); | |
247 | ||
248 | return; | |
249 | } | |
250 | ||
5ffc266e JS |
251 | /** |
252 | * lpfc_change_queue_depth - Alter scsi device queue depth | |
253 | * @sdev: Pointer the scsi device on which to change the queue depth. | |
254 | * @qdepth: New queue depth to set the sdev to. | |
255 | * @reason: The reason for the queue depth change. | |
256 | * | |
257 | * This function is called by the midlayer and the LLD to alter the queue | |
258 | * depth for a scsi device. This function sets the queue depth to the new | |
259 | * value and sends an event out to log the queue depth change. | |
260 | **/ | |
261 | int | |
262 | lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) | |
263 | { | |
264 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; | |
265 | struct lpfc_hba *phba = vport->phba; | |
266 | struct lpfc_rport_data *rdata; | |
267 | unsigned long new_queue_depth, old_queue_depth; | |
268 | ||
269 | old_queue_depth = sdev->queue_depth; | |
270 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
271 | new_queue_depth = sdev->queue_depth; | |
272 | rdata = sdev->hostdata; | |
273 | if (rdata) | |
274 | lpfc_send_sdev_queuedepth_change_event(phba, vport, | |
275 | rdata->pnode, sdev->lun, | |
276 | old_queue_depth, | |
277 | new_queue_depth); | |
278 | return sdev->queue_depth; | |
279 | } | |
280 | ||
9bad7671 | 281 | /** |
3621a710 | 282 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
283 | * @phba: The Hba for which this call is being executed. |
284 | * | |
285 | * This routine is called when there is resource error in driver or firmware. | |
286 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
287 | * posts at most 1 event each second. This routine wakes up worker thread of | |
288 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
289 | * | |
290 | * This routine should be called with no lock held. | |
291 | **/ | |
92d7f7b0 | 292 | void |
eaf15d5b | 293 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
294 | { |
295 | unsigned long flags; | |
5e9d9b82 | 296 | uint32_t evt_posted; |
92d7f7b0 JS |
297 | |
298 | spin_lock_irqsave(&phba->hbalock, flags); | |
299 | atomic_inc(&phba->num_rsrc_err); | |
300 | phba->last_rsrc_error_time = jiffies; | |
301 | ||
302 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
303 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
304 | return; | |
305 | } | |
306 | ||
307 | phba->last_ramp_down_time = jiffies; | |
308 | ||
309 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
310 | ||
311 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
312 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
313 | if (!evt_posted) | |
92d7f7b0 | 314 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
315 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
316 | ||
5e9d9b82 JS |
317 | if (!evt_posted) |
318 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
319 | return; |
320 | } | |
321 | ||
9bad7671 | 322 | /** |
3621a710 | 323 | * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread |
9bad7671 JS |
324 | * @phba: The Hba for which this call is being executed. |
325 | * | |
326 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
327 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
328 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
329 | * to process WORKER_RAM_DOWN_EVENT event. | |
330 | * | |
331 | * This routine should be called with no lock held. | |
332 | **/ | |
92d7f7b0 | 333 | static inline void |
3de2a653 | 334 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
a257bf90 | 335 | uint32_t queue_depth) |
92d7f7b0 JS |
336 | { |
337 | unsigned long flags; | |
3de2a653 | 338 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 339 | uint32_t evt_posted; |
92d7f7b0 JS |
340 | atomic_inc(&phba->num_cmd_success); |
341 | ||
a257bf90 | 342 | if (vport->cfg_lun_queue_depth <= queue_depth) |
92d7f7b0 | 343 | return; |
92d7f7b0 | 344 | spin_lock_irqsave(&phba->hbalock, flags); |
5ffc266e JS |
345 | if (time_before(jiffies, |
346 | phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) || | |
347 | time_before(jiffies, | |
348 | phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) { | |
92d7f7b0 JS |
349 | spin_unlock_irqrestore(&phba->hbalock, flags); |
350 | return; | |
351 | } | |
92d7f7b0 JS |
352 | phba->last_ramp_up_time = jiffies; |
353 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
354 | ||
355 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
356 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
357 | if (!evt_posted) | |
92d7f7b0 | 358 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
359 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
360 | ||
5e9d9b82 JS |
361 | if (!evt_posted) |
362 | lpfc_worker_wake_up(phba); | |
363 | return; | |
92d7f7b0 JS |
364 | } |
365 | ||
9bad7671 | 366 | /** |
3621a710 | 367 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
368 | * @phba: The Hba for which this call is being executed. |
369 | * | |
370 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
371 | * thread.This routine reduces queue depth for all scsi device on each vport | |
372 | * associated with @phba. | |
373 | **/ | |
92d7f7b0 JS |
374 | void |
375 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
376 | { | |
549e55cd JS |
377 | struct lpfc_vport **vports; |
378 | struct Scsi_Host *shost; | |
92d7f7b0 | 379 | struct scsi_device *sdev; |
5ffc266e | 380 | unsigned long new_queue_depth; |
92d7f7b0 | 381 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 382 | int i; |
92d7f7b0 JS |
383 | |
384 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
385 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
386 | ||
549e55cd JS |
387 | vports = lpfc_create_vport_work_array(phba); |
388 | if (vports != NULL) | |
21e9a0a5 | 389 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
390 | shost = lpfc_shost_from_vport(vports[i]); |
391 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 392 | new_queue_depth = |
549e55cd JS |
393 | sdev->queue_depth * num_rsrc_err / |
394 | (num_rsrc_err + num_cmd_success); | |
395 | if (!new_queue_depth) | |
396 | new_queue_depth = sdev->queue_depth - 1; | |
397 | else | |
398 | new_queue_depth = sdev->queue_depth - | |
399 | new_queue_depth; | |
5ffc266e JS |
400 | lpfc_change_queue_depth(sdev, new_queue_depth, |
401 | SCSI_QDEPTH_DEFAULT); | |
549e55cd | 402 | } |
92d7f7b0 | 403 | } |
09372820 | 404 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
405 | atomic_set(&phba->num_rsrc_err, 0); |
406 | atomic_set(&phba->num_cmd_success, 0); | |
407 | } | |
408 | ||
9bad7671 | 409 | /** |
3621a710 | 410 | * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler |
9bad7671 JS |
411 | * @phba: The Hba for which this call is being executed. |
412 | * | |
413 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
414 | * thread.This routine increases queue depth for all scsi device on each vport | |
415 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
416 | * num_cmd_success to zero. | |
417 | **/ | |
92d7f7b0 JS |
418 | void |
419 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
420 | { | |
549e55cd JS |
421 | struct lpfc_vport **vports; |
422 | struct Scsi_Host *shost; | |
92d7f7b0 | 423 | struct scsi_device *sdev; |
549e55cd JS |
424 | int i; |
425 | ||
426 | vports = lpfc_create_vport_work_array(phba); | |
427 | if (vports != NULL) | |
21e9a0a5 | 428 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
429 | shost = lpfc_shost_from_vport(vports[i]); |
430 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
431 | if (vports[i]->cfg_lun_queue_depth <= |
432 | sdev->queue_depth) | |
433 | continue; | |
5ffc266e JS |
434 | lpfc_change_queue_depth(sdev, |
435 | sdev->queue_depth+1, | |
436 | SCSI_QDEPTH_RAMP_UP); | |
549e55cd | 437 | } |
92d7f7b0 | 438 | } |
09372820 | 439 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
440 | atomic_set(&phba->num_rsrc_err, 0); |
441 | atomic_set(&phba->num_cmd_success, 0); | |
442 | } | |
443 | ||
a8e497d5 | 444 | /** |
3621a710 | 445 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
446 | * @phba: Pointer to HBA context object. |
447 | * | |
448 | * This function walks vport list and set each SCSI host to block state | |
449 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
450 | * with EEH when device's PCI slot has been permanently disabled. | |
451 | **/ | |
452 | void | |
453 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
454 | { | |
455 | struct lpfc_vport **vports; | |
456 | struct Scsi_Host *shost; | |
457 | struct scsi_device *sdev; | |
458 | struct fc_rport *rport; | |
459 | int i; | |
460 | ||
461 | vports = lpfc_create_vport_work_array(phba); | |
462 | if (vports != NULL) | |
21e9a0a5 | 463 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
464 | shost = lpfc_shost_from_vport(vports[i]); |
465 | shost_for_each_device(sdev, shost) { | |
466 | rport = starget_to_rport(scsi_target(sdev)); | |
467 | fc_remote_port_delete(rport); | |
468 | } | |
469 | } | |
470 | lpfc_destroy_vport_work_array(phba, vports); | |
471 | } | |
472 | ||
9bad7671 | 473 | /** |
3772a991 | 474 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 475 | * @vport: The virtual port for which this call being executed. |
3772a991 | 476 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 477 | * |
3772a991 JS |
478 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
479 | * the scsi buffer contains all the necessary information needed to initiate | |
480 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
481 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
482 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
483 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
484 | * |
485 | * Return codes: | |
3772a991 JS |
486 | * int - number of scsi buffers that were allocated. |
487 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 488 | **/ |
3772a991 JS |
489 | static int |
490 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 491 | { |
2e0fef85 | 492 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
493 | struct lpfc_scsi_buf *psb; |
494 | struct ulp_bde64 *bpl; | |
495 | IOCB_t *iocb; | |
34b02dcd JS |
496 | dma_addr_t pdma_phys_fcp_cmd; |
497 | dma_addr_t pdma_phys_fcp_rsp; | |
498 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 499 | uint16_t iotag; |
3772a991 | 500 | int bcnt; |
dea3101e | 501 | |
3772a991 JS |
502 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
503 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
504 | if (!psb) | |
505 | break; | |
dea3101e | 506 | |
3772a991 JS |
507 | /* |
508 | * Get memory from the pci pool to map the virt space to pci | |
509 | * bus space for an I/O. The DMA buffer includes space for the | |
510 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
511 | * necessary to support the sg_tablesize. | |
512 | */ | |
513 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
514 | GFP_KERNEL, &psb->dma_handle); | |
515 | if (!psb->data) { | |
516 | kfree(psb); | |
517 | break; | |
518 | } | |
519 | ||
520 | /* Initialize virtual ptrs to dma_buf region. */ | |
521 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
522 | ||
523 | /* Allocate iotag for psb->cur_iocbq. */ | |
524 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
525 | if (iotag == 0) { | |
526 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
527 | psb->data, psb->dma_handle); | |
528 | kfree(psb); | |
529 | break; | |
530 | } | |
531 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
532 | ||
533 | psb->fcp_cmnd = psb->data; | |
534 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
535 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 536 | sizeof(struct fcp_rsp); |
dea3101e | 537 | |
3772a991 JS |
538 | /* Initialize local short-hand pointers. */ |
539 | bpl = psb->fcp_bpl; | |
540 | pdma_phys_fcp_cmd = psb->dma_handle; | |
541 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
542 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
543 | sizeof(struct fcp_rsp); | |
544 | ||
545 | /* | |
546 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
547 | * are sg list bdes. Initialize the first two and leave the | |
548 | * rest for queuecommand. | |
549 | */ | |
550 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
551 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
552 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
553 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
554 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
555 | ||
556 | /* Setup the physical region for the FCP RSP */ | |
557 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
558 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
559 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
560 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
561 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
562 | ||
563 | /* | |
564 | * Since the IOCB for the FCP I/O is built into this | |
565 | * lpfc_scsi_buf, initialize it with all known data now. | |
566 | */ | |
567 | iocb = &psb->cur_iocbq.iocb; | |
568 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
569 | if ((phba->sli_rev == 3) && | |
570 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
571 | /* fill in immediate fcp command BDE */ | |
572 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
573 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
574 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
575 | unsli3.fcp_ext.icd); | |
576 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
577 | iocb->ulpBdeCount = 0; | |
578 | iocb->ulpLe = 0; | |
579 | /* fill in responce BDE */ | |
580 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = | |
581 | BUFF_TYPE_BDE_64; | |
582 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
583 | sizeof(struct fcp_rsp); | |
584 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
585 | putPaddrLow(pdma_phys_fcp_rsp); | |
586 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
587 | putPaddrHigh(pdma_phys_fcp_rsp); | |
588 | } else { | |
589 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
590 | iocb->un.fcpi64.bdl.bdeSize = | |
591 | (2 * sizeof(struct ulp_bde64)); | |
592 | iocb->un.fcpi64.bdl.addrLow = | |
593 | putPaddrLow(pdma_phys_bpl); | |
594 | iocb->un.fcpi64.bdl.addrHigh = | |
595 | putPaddrHigh(pdma_phys_bpl); | |
596 | iocb->ulpBdeCount = 1; | |
597 | iocb->ulpLe = 1; | |
598 | } | |
599 | iocb->ulpClass = CLASS3; | |
600 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 | 601 | /* Put it back into the SCSI buffer list */ |
1c6f4ef5 | 602 | lpfc_release_scsi_buf_s3(phba, psb); |
dea3101e | 603 | |
34b02dcd | 604 | } |
dea3101e | 605 | |
3772a991 | 606 | return bcnt; |
dea3101e JB |
607 | } |
608 | ||
da0436e9 JS |
609 | /** |
610 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
611 | * @phba: pointer to lpfc hba data structure. | |
612 | * @axri: pointer to the fcp xri abort wcqe structure. | |
613 | * | |
614 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
615 | * FCP aborted xri. | |
616 | **/ | |
617 | void | |
618 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
619 | struct sli4_wcqe_xri_aborted *axri) | |
620 | { | |
621 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
622 | struct lpfc_scsi_buf *psb, *next_psb; | |
623 | unsigned long iflag = 0; | |
0f65ff68 JS |
624 | struct lpfc_iocbq *iocbq; |
625 | int i; | |
589a52d6 | 626 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
da0436e9 | 627 | |
0f65ff68 JS |
628 | spin_lock_irqsave(&phba->hbalock, iflag); |
629 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
da0436e9 JS |
630 | list_for_each_entry_safe(psb, next_psb, |
631 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
632 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
633 | list_del(&psb->list); | |
341af102 | 634 | psb->exch_busy = 0; |
da0436e9 | 635 | psb->status = IOSTAT_SUCCESS; |
0f65ff68 JS |
636 | spin_unlock( |
637 | &phba->sli4_hba.abts_scsi_buf_list_lock); | |
638 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
da0436e9 JS |
639 | lpfc_release_scsi_buf_s4(phba, psb); |
640 | return; | |
641 | } | |
642 | } | |
0f65ff68 JS |
643 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); |
644 | for (i = 1; i <= phba->sli.last_iotag; i++) { | |
645 | iocbq = phba->sli.iocbq_lookup[i]; | |
646 | ||
647 | if (!(iocbq->iocb_flag & LPFC_IO_FCP) || | |
648 | (iocbq->iocb_flag & LPFC_IO_LIBDFC)) | |
649 | continue; | |
650 | if (iocbq->sli4_xritag != xri) | |
651 | continue; | |
652 | psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); | |
653 | psb->exch_busy = 0; | |
654 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
589a52d6 JS |
655 | if (pring->txq_cnt) |
656 | lpfc_worker_wake_up(phba); | |
0f65ff68 JS |
657 | return; |
658 | ||
659 | } | |
660 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
da0436e9 JS |
661 | } |
662 | ||
663 | /** | |
664 | * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block | |
665 | * @phba: pointer to lpfc hba data structure. | |
666 | * | |
667 | * This routine walks the list of scsi buffers that have been allocated and | |
668 | * repost them to the HBA by using SGL block post. This is needed after a | |
669 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
670 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
671 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
672 | * | |
673 | * Returns: 0 = success, non-zero failure. | |
674 | **/ | |
675 | int | |
676 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
677 | { | |
678 | struct lpfc_scsi_buf *psb; | |
679 | int index, status, bcnt = 0, rcnt = 0, rc = 0; | |
680 | LIST_HEAD(sblist); | |
681 | ||
682 | for (index = 0; index < phba->sli4_hba.scsi_xri_cnt; index++) { | |
683 | psb = phba->sli4_hba.lpfc_scsi_psb_array[index]; | |
684 | if (psb) { | |
685 | /* Remove from SCSI buffer list */ | |
686 | list_del(&psb->list); | |
687 | /* Add it to a local SCSI buffer list */ | |
688 | list_add_tail(&psb->list, &sblist); | |
689 | if (++rcnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
690 | bcnt = rcnt; | |
691 | rcnt = 0; | |
692 | } | |
693 | } else | |
694 | /* A hole present in the XRI array, need to skip */ | |
695 | bcnt = rcnt; | |
696 | ||
697 | if (index == phba->sli4_hba.scsi_xri_cnt - 1) | |
698 | /* End of XRI array for SCSI buffer, complete */ | |
699 | bcnt = rcnt; | |
700 | ||
701 | /* Continue until collect up to a nembed page worth of sgls */ | |
702 | if (bcnt == 0) | |
703 | continue; | |
704 | /* Now, post the SCSI buffer list sgls as a block */ | |
705 | status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt); | |
706 | /* Reset SCSI buffer count for next round of posting */ | |
707 | bcnt = 0; | |
708 | while (!list_empty(&sblist)) { | |
709 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
710 | list); | |
711 | if (status) { | |
712 | /* Put this back on the abort scsi list */ | |
341af102 | 713 | psb->exch_busy = 1; |
da0436e9 | 714 | rc++; |
341af102 JS |
715 | } else { |
716 | psb->exch_busy = 0; | |
da0436e9 | 717 | psb->status = IOSTAT_SUCCESS; |
341af102 | 718 | } |
da0436e9 JS |
719 | /* Put it back into the SCSI buffer list */ |
720 | lpfc_release_scsi_buf_s4(phba, psb); | |
721 | } | |
722 | } | |
723 | return rc; | |
724 | } | |
725 | ||
726 | /** | |
727 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
728 | * @vport: The virtual port for which this call being executed. | |
729 | * @num_to_allocate: The requested number of buffers to allocate. | |
730 | * | |
731 | * This routine allocates a scsi buffer for device with SLI-4 interface spec, | |
732 | * the scsi buffer contains all the necessary information needed to initiate | |
733 | * a SCSI I/O. | |
734 | * | |
735 | * Return codes: | |
736 | * int - number of scsi buffers that were allocated. | |
737 | * 0 = failure, less than num_to_alloc is a partial failure. | |
738 | **/ | |
739 | static int | |
740 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
741 | { | |
742 | struct lpfc_hba *phba = vport->phba; | |
743 | struct lpfc_scsi_buf *psb; | |
744 | struct sli4_sge *sgl; | |
745 | IOCB_t *iocb; | |
746 | dma_addr_t pdma_phys_fcp_cmd; | |
747 | dma_addr_t pdma_phys_fcp_rsp; | |
748 | dma_addr_t pdma_phys_bpl, pdma_phys_bpl1; | |
749 | uint16_t iotag, last_xritag = NO_XRI; | |
750 | int status = 0, index; | |
751 | int bcnt; | |
752 | int non_sequential_xri = 0; | |
da0436e9 JS |
753 | LIST_HEAD(sblist); |
754 | ||
755 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { | |
756 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
757 | if (!psb) | |
758 | break; | |
759 | ||
760 | /* | |
761 | * Get memory from the pci pool to map the virt space to pci bus | |
762 | * space for an I/O. The DMA buffer includes space for the | |
763 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
764 | * necessary to support the sg_tablesize. | |
765 | */ | |
766 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
767 | GFP_KERNEL, &psb->dma_handle); | |
768 | if (!psb->data) { | |
769 | kfree(psb); | |
770 | break; | |
771 | } | |
772 | ||
773 | /* Initialize virtual ptrs to dma_buf region. */ | |
774 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
775 | ||
776 | /* Allocate iotag for psb->cur_iocbq. */ | |
777 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
778 | if (iotag == 0) { | |
b92938b4 JS |
779 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
780 | psb->data, psb->dma_handle); | |
da0436e9 JS |
781 | kfree(psb); |
782 | break; | |
783 | } | |
784 | ||
785 | psb->cur_iocbq.sli4_xritag = lpfc_sli4_next_xritag(phba); | |
786 | if (psb->cur_iocbq.sli4_xritag == NO_XRI) { | |
787 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
788 | psb->data, psb->dma_handle); | |
789 | kfree(psb); | |
790 | break; | |
791 | } | |
792 | if (last_xritag != NO_XRI | |
793 | && psb->cur_iocbq.sli4_xritag != (last_xritag+1)) { | |
794 | non_sequential_xri = 1; | |
795 | } else | |
796 | list_add_tail(&psb->list, &sblist); | |
797 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
798 | ||
799 | index = phba->sli4_hba.scsi_xri_cnt++; | |
800 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
801 | ||
802 | psb->fcp_bpl = psb->data; | |
803 | psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size) | |
804 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
805 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + | |
806 | sizeof(struct fcp_cmnd)); | |
807 | ||
808 | /* Initialize local short-hand pointers. */ | |
809 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
810 | pdma_phys_bpl = psb->dma_handle; | |
811 | pdma_phys_fcp_cmd = | |
812 | (psb->dma_handle + phba->cfg_sg_dma_buf_size) | |
813 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
814 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); | |
815 | ||
816 | /* | |
817 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
818 | * are sg list bdes. Initialize the first two and leave the | |
819 | * rest for queuecommand. | |
820 | */ | |
821 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
822 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
da0436e9 JS |
823 | bf_set(lpfc_sli4_sge_last, sgl, 0); |
824 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 825 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); |
da0436e9 JS |
826 | sgl++; |
827 | ||
828 | /* Setup the physical region for the FCP RSP */ | |
829 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
830 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
da0436e9 JS |
831 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
832 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 833 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); |
da0436e9 JS |
834 | |
835 | /* | |
836 | * Since the IOCB for the FCP I/O is built into this | |
837 | * lpfc_scsi_buf, initialize it with all known data now. | |
838 | */ | |
839 | iocb = &psb->cur_iocbq.iocb; | |
840 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
841 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
842 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
843 | * We are setting the bpl to point to out sgl. An sgl's | |
844 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
845 | */ | |
846 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
847 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
848 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
849 | iocb->ulpBdeCount = 1; | |
850 | iocb->ulpLe = 1; | |
851 | iocb->ulpClass = CLASS3; | |
852 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) | |
853 | pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE; | |
854 | else | |
855 | pdma_phys_bpl1 = 0; | |
856 | psb->dma_phys_bpl = pdma_phys_bpl; | |
857 | phba->sli4_hba.lpfc_scsi_psb_array[index] = psb; | |
858 | if (non_sequential_xri) { | |
859 | status = lpfc_sli4_post_sgl(phba, pdma_phys_bpl, | |
860 | pdma_phys_bpl1, | |
861 | psb->cur_iocbq.sli4_xritag); | |
862 | if (status) { | |
863 | /* Put this back on the abort scsi list */ | |
341af102 | 864 | psb->exch_busy = 1; |
341af102 JS |
865 | } else { |
866 | psb->exch_busy = 0; | |
da0436e9 | 867 | psb->status = IOSTAT_SUCCESS; |
341af102 | 868 | } |
da0436e9 JS |
869 | /* Put it back into the SCSI buffer list */ |
870 | lpfc_release_scsi_buf_s4(phba, psb); | |
871 | break; | |
872 | } | |
873 | } | |
874 | if (bcnt) { | |
875 | status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt); | |
876 | /* Reset SCSI buffer count for next round of posting */ | |
877 | while (!list_empty(&sblist)) { | |
878 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
879 | list); | |
880 | if (status) { | |
881 | /* Put this back on the abort scsi list */ | |
341af102 | 882 | psb->exch_busy = 1; |
341af102 JS |
883 | } else { |
884 | psb->exch_busy = 0; | |
da0436e9 | 885 | psb->status = IOSTAT_SUCCESS; |
341af102 | 886 | } |
da0436e9 JS |
887 | /* Put it back into the SCSI buffer list */ |
888 | lpfc_release_scsi_buf_s4(phba, psb); | |
889 | } | |
890 | } | |
891 | ||
d7c47992 | 892 | return bcnt + non_sequential_xri; |
da0436e9 JS |
893 | } |
894 | ||
9bad7671 | 895 | /** |
3772a991 JS |
896 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
897 | * @vport: The virtual port for which this call being executed. | |
898 | * @num_to_allocate: The requested number of buffers to allocate. | |
899 | * | |
900 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
901 | * the lpfc_hba struct. | |
902 | * | |
903 | * Return codes: | |
904 | * int - number of scsi buffers that were allocated. | |
905 | * 0 = failure, less than num_to_alloc is a partial failure. | |
906 | **/ | |
907 | static inline int | |
908 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
909 | { | |
910 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
911 | } | |
912 | ||
913 | /** | |
914 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
915 | * @phba: The HBA for which this call is being executed. | |
9bad7671 JS |
916 | * |
917 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
918 | * and returns to caller. | |
919 | * | |
920 | * Return codes: | |
921 | * NULL - Error | |
922 | * Pointer to lpfc_scsi_buf - Success | |
923 | **/ | |
455c53ec | 924 | static struct lpfc_scsi_buf* |
875fbdfe | 925 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 926 | { |
0bd4ca25 JSEC |
927 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
928 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 929 | unsigned long iflag = 0; |
0bd4ca25 | 930 | |
875fbdfe | 931 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 932 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
933 | if (lpfc_cmd) { |
934 | lpfc_cmd->seg_cnt = 0; | |
935 | lpfc_cmd->nonsg_phys = 0; | |
e2a0a9d6 | 936 | lpfc_cmd->prot_seg_cnt = 0; |
1dcb58e5 | 937 | } |
875fbdfe | 938 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
939 | return lpfc_cmd; |
940 | } | |
dea3101e | 941 | |
9bad7671 | 942 | /** |
3772a991 | 943 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
944 | * @phba: The Hba for which this call is being executed. |
945 | * @psb: The scsi buffer which is being released. | |
946 | * | |
947 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
948 | * lpfc_scsi_buf_list list. | |
949 | **/ | |
0bd4ca25 | 950 | static void |
3772a991 | 951 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 952 | { |
875fbdfe | 953 | unsigned long iflag = 0; |
dea3101e | 954 | |
875fbdfe | 955 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 956 | psb->pCmd = NULL; |
dea3101e | 957 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 958 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e JB |
959 | } |
960 | ||
da0436e9 JS |
961 | /** |
962 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
963 | * @phba: The Hba for which this call is being executed. | |
964 | * @psb: The scsi buffer which is being released. | |
965 | * | |
966 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
967 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
968 | * and cannot be reused for at least RA_TOV amount of time if it was | |
969 | * aborted. | |
970 | **/ | |
971 | static void | |
972 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
973 | { | |
974 | unsigned long iflag = 0; | |
975 | ||
341af102 | 976 | if (psb->exch_busy) { |
da0436e9 JS |
977 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, |
978 | iflag); | |
979 | psb->pCmd = NULL; | |
980 | list_add_tail(&psb->list, | |
981 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
982 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
983 | iflag); | |
984 | } else { | |
985 | ||
986 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
987 | psb->pCmd = NULL; | |
988 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); | |
989 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); | |
990 | } | |
991 | } | |
992 | ||
9bad7671 | 993 | /** |
3772a991 JS |
994 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
995 | * @phba: The Hba for which this call is being executed. | |
996 | * @psb: The scsi buffer which is being released. | |
997 | * | |
998 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
999 | * lpfc_scsi_buf_list list. | |
1000 | **/ | |
1001 | static void | |
1002 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1003 | { | |
1004 | ||
1005 | phba->lpfc_release_scsi_buf(phba, psb); | |
1006 | } | |
1007 | ||
1008 | /** | |
1009 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
1010 | * @phba: The Hba for which this call is being executed. |
1011 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1012 | * | |
1013 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
1014 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
1015 | * through sg elements and format the bdea. This routine also initializes all | |
1016 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
1017 | * |
1018 | * Return codes: | |
1019 | * 1 - Error | |
1020 | * 0 - Success | |
1021 | **/ | |
dea3101e | 1022 | static int |
3772a991 | 1023 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e JB |
1024 | { |
1025 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1026 | struct scatterlist *sgel = NULL; | |
1027 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1028 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
0f65ff68 | 1029 | struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; |
dea3101e | 1030 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
34b02dcd | 1031 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1032 | dma_addr_t physaddr; |
34b02dcd | 1033 | uint32_t num_bde = 0; |
a0b4f78f | 1034 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e JB |
1035 | |
1036 | /* | |
1037 | * There are three possibilities here - use scatter-gather segment, use | |
1038 | * the single mapping, or neither. Start the lpfc command prep by | |
1039 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1040 | * data bde entry. | |
1041 | */ | |
1042 | bpl += 2; | |
c59fd9eb | 1043 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
1044 | /* |
1045 | * The driver stores the segment count returned from pci_map_sg | |
1046 | * because this a count of dma-mappings used to map the use_sg | |
1047 | * pages. They are not guaranteed to be the same for those | |
1048 | * architectures that implement an IOMMU. | |
1049 | */ | |
dea3101e | 1050 | |
c59fd9eb FT |
1051 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1052 | scsi_sg_count(scsi_cmnd), datadir); | |
1053 | if (unlikely(!nseg)) | |
1054 | return 1; | |
1055 | ||
a0b4f78f | 1056 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1057 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1058 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1059 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1060 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1061 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1062 | lpfc_cmd->seg_cnt); |
a0b4f78f | 1063 | scsi_dma_unmap(scsi_cmnd); |
dea3101e JB |
1064 | return 1; |
1065 | } | |
1066 | ||
1067 | /* | |
1068 | * The driver established a maximum scatter-gather segment count | |
1069 | * during probe that limits the number of sg elements in any | |
1070 | * single scsi command. Just run through the seg_cnt and format | |
1071 | * the bde's. | |
34b02dcd JS |
1072 | * When using SLI-3 the driver will try to fit all the BDEs into |
1073 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1074 | * does for SLI-2 mode. | |
dea3101e | 1075 | */ |
34b02dcd | 1076 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1077 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1078 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1079 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
0f65ff68 | 1080 | !(iocbq->iocb_flag & DSS_SECURITY_OP) && |
34b02dcd JS |
1081 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1082 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1083 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1084 | data_bde->addrLow = putPaddrLow(physaddr); | |
1085 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1086 | data_bde++; | |
1087 | } else { | |
1088 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1089 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1090 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1091 | bpl->addrLow = | |
1092 | le32_to_cpu(putPaddrLow(physaddr)); | |
1093 | bpl->addrHigh = | |
1094 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1095 | bpl++; | |
1096 | } | |
dea3101e | 1097 | } |
c59fd9eb | 1098 | } |
dea3101e JB |
1099 | |
1100 | /* | |
1101 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1102 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1103 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1104 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1105 | */ |
e2a0a9d6 | 1106 | if (phba->sli_rev == 3 && |
0f65ff68 JS |
1107 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
1108 | !(iocbq->iocb_flag & DSS_SECURITY_OP)) { | |
34b02dcd JS |
1109 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1110 | /* | |
1111 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1112 | * This I/O has more than 3 BDE so the 1st data bde will | |
1113 | * be a BPL that is filled in here. | |
1114 | */ | |
1115 | physaddr = lpfc_cmd->dma_handle; | |
1116 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1117 | data_bde->tus.f.bdeSize = (num_bde * | |
1118 | sizeof(struct ulp_bde64)); | |
1119 | physaddr += (sizeof(struct fcp_cmnd) + | |
1120 | sizeof(struct fcp_rsp) + | |
1121 | (2 * sizeof(struct ulp_bde64))); | |
1122 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1123 | data_bde->addrLow = putPaddrLow(physaddr); | |
1124 | /* ebde count includes the responce bde and data bpl */ | |
1125 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; | |
1126 | } else { | |
1127 | /* ebde count includes the responce bde and data bdes */ | |
1128 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); | |
1129 | } | |
1130 | } else { | |
1131 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1132 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
0f65ff68 | 1133 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
34b02dcd | 1134 | } |
09372820 | 1135 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1136 | |
1137 | /* | |
1138 | * Due to difference in data length between DIF/non-DIF paths, | |
1139 | * we need to set word 4 of IOCB here | |
1140 | */ | |
a257bf90 | 1141 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1142 | return 0; |
1143 | } | |
1144 | ||
1145 | /* | |
6c8eea54 JS |
1146 | * Given a scsi cmnd, determine the BlockGuard opcodes to be used with it |
1147 | * @sc: The SCSI command to examine | |
1148 | * @txopt: (out) BlockGuard operation for transmitted data | |
1149 | * @rxopt: (out) BlockGuard operation for received data | |
1150 | * | |
1151 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1152 | * | |
e2a0a9d6 JS |
1153 | */ |
1154 | static int | |
6c8eea54 JS |
1155 | lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, |
1156 | uint8_t *txop, uint8_t *rxop) | |
e2a0a9d6 JS |
1157 | { |
1158 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
6c8eea54 | 1159 | uint8_t ret = 0; |
e2a0a9d6 JS |
1160 | |
1161 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
1162 | switch (scsi_get_prot_op(sc)) { | |
1163 | case SCSI_PROT_READ_INSERT: | |
1164 | case SCSI_PROT_WRITE_STRIP: | |
6c8eea54 JS |
1165 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
1166 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; | |
e2a0a9d6 JS |
1167 | break; |
1168 | ||
1169 | case SCSI_PROT_READ_STRIP: | |
1170 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 JS |
1171 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
1172 | *rxop = BG_OP_IN_CRC_OUT_NODIF; | |
e2a0a9d6 JS |
1173 | break; |
1174 | ||
c6af4042 MP |
1175 | case SCSI_PROT_READ_PASS: |
1176 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 JS |
1177 | *txop = BG_OP_IN_CSUM_OUT_CRC; |
1178 | *rxop = BG_OP_IN_CRC_OUT_CSUM; | |
e2a0a9d6 JS |
1179 | break; |
1180 | ||
e2a0a9d6 JS |
1181 | case SCSI_PROT_NORMAL: |
1182 | default: | |
6a9c52cf | 1183 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
6c8eea54 | 1184 | "9063 BLKGRD: Bad op/guard:%d/%d combination\n", |
e2a0a9d6 | 1185 | scsi_get_prot_op(sc), guard_type); |
6c8eea54 | 1186 | ret = 1; |
e2a0a9d6 JS |
1187 | break; |
1188 | ||
1189 | } | |
1190 | } else if (guard_type == SHOST_DIX_GUARD_CRC) { | |
1191 | switch (scsi_get_prot_op(sc)) { | |
1192 | case SCSI_PROT_READ_STRIP: | |
1193 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 JS |
1194 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
1195 | *rxop = BG_OP_IN_CRC_OUT_NODIF; | |
e2a0a9d6 JS |
1196 | break; |
1197 | ||
1198 | case SCSI_PROT_READ_PASS: | |
1199 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 JS |
1200 | *txop = BG_OP_IN_CRC_OUT_CRC; |
1201 | *rxop = BG_OP_IN_CRC_OUT_CRC; | |
e2a0a9d6 JS |
1202 | break; |
1203 | ||
e2a0a9d6 JS |
1204 | case SCSI_PROT_READ_INSERT: |
1205 | case SCSI_PROT_WRITE_STRIP: | |
1206 | case SCSI_PROT_NORMAL: | |
1207 | default: | |
6a9c52cf JS |
1208 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1209 | "9075 BLKGRD: Bad op/guard:%d/%d combination\n", | |
e2a0a9d6 | 1210 | scsi_get_prot_op(sc), guard_type); |
6c8eea54 | 1211 | ret = 1; |
e2a0a9d6 JS |
1212 | break; |
1213 | } | |
1214 | } else { | |
1215 | /* unsupported format */ | |
1216 | BUG(); | |
1217 | } | |
1218 | ||
6c8eea54 | 1219 | return ret; |
e2a0a9d6 JS |
1220 | } |
1221 | ||
1222 | struct scsi_dif_tuple { | |
1223 | __be16 guard_tag; /* Checksum */ | |
1224 | __be16 app_tag; /* Opaque storage */ | |
1225 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
1226 | }; | |
1227 | ||
1228 | static inline unsigned | |
1229 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
1230 | { | |
1231 | return sc->device->sector_size; | |
1232 | } | |
1233 | ||
1234 | /** | |
1235 | * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command | |
1236 | * @sc: in: SCSI command | |
3621a710 JS |
1237 | * @apptagmask: out: app tag mask |
1238 | * @apptagval: out: app tag value | |
1239 | * @reftag: out: ref tag (reference tag) | |
e2a0a9d6 JS |
1240 | * |
1241 | * Description: | |
98a1708d MO |
1242 | * Extract DIF parameters from the command if possible. Otherwise, |
1243 | * use default parameters. | |
e2a0a9d6 JS |
1244 | * |
1245 | **/ | |
1246 | static inline void | |
1247 | lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask, | |
1248 | uint16_t *apptagval, uint32_t *reftag) | |
1249 | { | |
1250 | struct scsi_dif_tuple *spt; | |
1251 | unsigned char op = scsi_get_prot_op(sc); | |
1252 | unsigned int protcnt = scsi_prot_sg_count(sc); | |
1253 | static int cnt; | |
1254 | ||
1255 | if (protcnt && (op == SCSI_PROT_WRITE_STRIP || | |
c6af4042 | 1256 | op == SCSI_PROT_WRITE_PASS)) { |
e2a0a9d6 JS |
1257 | |
1258 | cnt++; | |
1259 | spt = page_address(sg_page(scsi_prot_sglist(sc))) + | |
1260 | scsi_prot_sglist(sc)[0].offset; | |
1261 | *apptagmask = 0; | |
1262 | *apptagval = 0; | |
1263 | *reftag = cpu_to_be32(spt->ref_tag); | |
1264 | ||
1265 | } else { | |
1266 | /* SBC defines ref tag to be lower 32bits of LBA */ | |
1267 | *reftag = (uint32_t) (0xffffffff & scsi_get_lba(sc)); | |
1268 | *apptagmask = 0; | |
1269 | *apptagval = 0; | |
1270 | } | |
1271 | } | |
1272 | ||
1273 | /* | |
1274 | * This function sets up buffer list for protection groups of | |
1275 | * type LPFC_PG_TYPE_NO_DIF | |
1276 | * | |
1277 | * This is usually used when the HBA is instructed to generate | |
1278 | * DIFs and insert them into data stream (or strip DIF from | |
1279 | * incoming data stream) | |
1280 | * | |
1281 | * The buffer list consists of just one protection group described | |
1282 | * below: | |
1283 | * +-------------------------+ | |
6c8eea54 JS |
1284 | * start of prot group --> | PDE_5 | |
1285 | * +-------------------------+ | |
1286 | * | PDE_6 | | |
e2a0a9d6 JS |
1287 | * +-------------------------+ |
1288 | * | Data BDE | | |
1289 | * +-------------------------+ | |
1290 | * |more Data BDE's ... (opt)| | |
1291 | * +-------------------------+ | |
1292 | * | |
1293 | * @sc: pointer to scsi command we're working on | |
1294 | * @bpl: pointer to buffer list for protection groups | |
1295 | * @datacnt: number of segments of data that have been dma mapped | |
1296 | * | |
1297 | * Note: Data s/g buffers have been dma mapped | |
1298 | */ | |
1299 | static int | |
1300 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1301 | struct ulp_bde64 *bpl, int datasegcnt) | |
1302 | { | |
1303 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
6c8eea54 JS |
1304 | struct lpfc_pde5 *pde5 = NULL; |
1305 | struct lpfc_pde6 *pde6 = NULL; | |
e2a0a9d6 | 1306 | dma_addr_t physaddr; |
6c8eea54 | 1307 | int i = 0, num_bde = 0, status; |
e2a0a9d6 | 1308 | int datadir = sc->sc_data_direction; |
e2a0a9d6 JS |
1309 | unsigned blksize; |
1310 | uint32_t reftag; | |
1311 | uint16_t apptagmask, apptagval; | |
6c8eea54 | 1312 | uint8_t txop, rxop; |
e2a0a9d6 | 1313 | |
6c8eea54 JS |
1314 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
1315 | if (status) | |
e2a0a9d6 JS |
1316 | goto out; |
1317 | ||
6c8eea54 | 1318 | /* extract some info from the scsi command for pde*/ |
e2a0a9d6 JS |
1319 | blksize = lpfc_cmd_blksize(sc); |
1320 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1321 | ||
6c8eea54 JS |
1322 | /* setup PDE5 with what we have */ |
1323 | pde5 = (struct lpfc_pde5 *) bpl; | |
1324 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
1325 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
1326 | pde5->reftag = reftag; | |
1327 | ||
bc73905a | 1328 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 JS |
1329 | pde5->word0 = cpu_to_le32(pde5->word0); |
1330 | pde5->reftag = cpu_to_le32(pde5->reftag); | |
1331 | ||
6c8eea54 JS |
1332 | /* advance bpl and increment bde count */ |
1333 | num_bde++; | |
1334 | bpl++; | |
1335 | pde6 = (struct lpfc_pde6 *) bpl; | |
1336 | ||
1337 | /* setup PDE6 with the rest of the info */ | |
1338 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
1339 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
1340 | bf_set(pde6_optx, pde6, txop); | |
1341 | bf_set(pde6_oprx, pde6, rxop); | |
1342 | if (datadir == DMA_FROM_DEVICE) { | |
1343 | bf_set(pde6_ce, pde6, 1); | |
1344 | bf_set(pde6_re, pde6, 1); | |
1345 | bf_set(pde6_ae, pde6, 1); | |
1346 | } | |
1347 | bf_set(pde6_ai, pde6, 1); | |
1348 | bf_set(pde6_apptagval, pde6, apptagval); | |
e2a0a9d6 | 1349 | |
bc73905a | 1350 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
1351 | pde6->word0 = cpu_to_le32(pde6->word0); |
1352 | pde6->word1 = cpu_to_le32(pde6->word1); | |
1353 | pde6->word2 = cpu_to_le32(pde6->word2); | |
1354 | ||
6c8eea54 | 1355 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
1356 | num_bde++; |
1357 | bpl++; | |
1358 | ||
1359 | /* assumption: caller has already run dma_map_sg on command data */ | |
1360 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
1361 | physaddr = sg_dma_address(sgde); | |
1362 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
1363 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
1364 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
1365 | if (datadir == DMA_TO_DEVICE) | |
1366 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1367 | else | |
1368 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1369 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1370 | bpl++; | |
1371 | num_bde++; | |
1372 | } | |
1373 | ||
1374 | out: | |
1375 | return num_bde; | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * This function sets up buffer list for protection groups of | |
1380 | * type LPFC_PG_TYPE_DIF_BUF | |
1381 | * | |
1382 | * This is usually used when DIFs are in their own buffers, | |
1383 | * separate from the data. The HBA can then by instructed | |
1384 | * to place the DIFs in the outgoing stream. For read operations, | |
1385 | * The HBA could extract the DIFs and place it in DIF buffers. | |
1386 | * | |
1387 | * The buffer list for this type consists of one or more of the | |
1388 | * protection groups described below: | |
1389 | * +-------------------------+ | |
6c8eea54 | 1390 | * start of first prot group --> | PDE_5 | |
e2a0a9d6 | 1391 | * +-------------------------+ |
6c8eea54 JS |
1392 | * | PDE_6 | |
1393 | * +-------------------------+ | |
1394 | * | PDE_7 (Prot BDE) | | |
e2a0a9d6 JS |
1395 | * +-------------------------+ |
1396 | * | Data BDE | | |
1397 | * +-------------------------+ | |
1398 | * |more Data BDE's ... (opt)| | |
1399 | * +-------------------------+ | |
6c8eea54 | 1400 | * start of new prot group --> | PDE_5 | |
e2a0a9d6 JS |
1401 | * +-------------------------+ |
1402 | * | ... | | |
1403 | * +-------------------------+ | |
1404 | * | |
1405 | * @sc: pointer to scsi command we're working on | |
1406 | * @bpl: pointer to buffer list for protection groups | |
1407 | * @datacnt: number of segments of data that have been dma mapped | |
1408 | * @protcnt: number of segment of protection data that have been dma mapped | |
1409 | * | |
1410 | * Note: It is assumed that both data and protection s/g buffers have been | |
1411 | * mapped for DMA | |
1412 | */ | |
1413 | static int | |
1414 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1415 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
1416 | { | |
1417 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
1418 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
6c8eea54 JS |
1419 | struct lpfc_pde5 *pde5 = NULL; |
1420 | struct lpfc_pde6 *pde6 = NULL; | |
e2a0a9d6 JS |
1421 | struct ulp_bde64 *prot_bde = NULL; |
1422 | dma_addr_t dataphysaddr, protphysaddr; | |
1423 | unsigned short curr_data = 0, curr_prot = 0; | |
1424 | unsigned int split_offset, protgroup_len; | |
1425 | unsigned int protgrp_blks, protgrp_bytes; | |
1426 | unsigned int remainder, subtotal; | |
6c8eea54 | 1427 | int status; |
e2a0a9d6 JS |
1428 | int datadir = sc->sc_data_direction; |
1429 | unsigned char pgdone = 0, alldone = 0; | |
1430 | unsigned blksize; | |
1431 | uint32_t reftag; | |
1432 | uint16_t apptagmask, apptagval; | |
6c8eea54 | 1433 | uint8_t txop, rxop; |
e2a0a9d6 JS |
1434 | int num_bde = 0; |
1435 | ||
1436 | sgpe = scsi_prot_sglist(sc); | |
1437 | sgde = scsi_sglist(sc); | |
1438 | ||
1439 | if (!sgpe || !sgde) { | |
1440 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1441 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
1442 | sgpe, sgde); | |
1443 | return 0; | |
1444 | } | |
1445 | ||
6c8eea54 JS |
1446 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
1447 | if (status) | |
e2a0a9d6 JS |
1448 | goto out; |
1449 | ||
6c8eea54 | 1450 | /* extract some info from the scsi command */ |
e2a0a9d6 JS |
1451 | blksize = lpfc_cmd_blksize(sc); |
1452 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1453 | ||
1454 | split_offset = 0; | |
1455 | do { | |
6c8eea54 JS |
1456 | /* setup PDE5 with what we have */ |
1457 | pde5 = (struct lpfc_pde5 *) bpl; | |
1458 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
1459 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
1460 | pde5->reftag = reftag; | |
e2a0a9d6 | 1461 | |
bc73905a | 1462 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 JS |
1463 | pde5->word0 = cpu_to_le32(pde5->word0); |
1464 | pde5->reftag = cpu_to_le32(pde5->reftag); | |
1465 | ||
6c8eea54 JS |
1466 | /* advance bpl and increment bde count */ |
1467 | num_bde++; | |
1468 | bpl++; | |
1469 | pde6 = (struct lpfc_pde6 *) bpl; | |
1470 | ||
1471 | /* setup PDE6 with the rest of the info */ | |
1472 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
1473 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
1474 | bf_set(pde6_optx, pde6, txop); | |
1475 | bf_set(pde6_oprx, pde6, rxop); | |
1476 | bf_set(pde6_ce, pde6, 1); | |
1477 | bf_set(pde6_re, pde6, 1); | |
1478 | bf_set(pde6_ae, pde6, 1); | |
1479 | bf_set(pde6_ai, pde6, 1); | |
1480 | bf_set(pde6_apptagval, pde6, apptagval); | |
1481 | ||
bc73905a | 1482 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
1483 | pde6->word0 = cpu_to_le32(pde6->word0); |
1484 | pde6->word1 = cpu_to_le32(pde6->word1); | |
1485 | pde6->word2 = cpu_to_le32(pde6->word2); | |
1486 | ||
6c8eea54 | 1487 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
1488 | num_bde++; |
1489 | bpl++; | |
1490 | ||
1491 | /* setup the first BDE that points to protection buffer */ | |
1492 | prot_bde = (struct ulp_bde64 *) bpl; | |
1493 | protphysaddr = sg_dma_address(sgpe); | |
6c8eea54 JS |
1494 | prot_bde->addrHigh = le32_to_cpu(putPaddrLow(protphysaddr)); |
1495 | prot_bde->addrLow = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
e2a0a9d6 JS |
1496 | protgroup_len = sg_dma_len(sgpe); |
1497 | ||
e2a0a9d6 JS |
1498 | /* must be integer multiple of the DIF block length */ |
1499 | BUG_ON(protgroup_len % 8); | |
1500 | ||
1501 | protgrp_blks = protgroup_len / 8; | |
1502 | protgrp_bytes = protgrp_blks * blksize; | |
1503 | ||
1504 | prot_bde->tus.f.bdeSize = protgroup_len; | |
6c8eea54 | 1505 | prot_bde->tus.f.bdeFlags = LPFC_PDE7_DESCRIPTOR; |
e2a0a9d6 JS |
1506 | prot_bde->tus.w = le32_to_cpu(bpl->tus.w); |
1507 | ||
1508 | curr_prot++; | |
1509 | num_bde++; | |
1510 | ||
1511 | /* setup BDE's for data blocks associated with DIF data */ | |
1512 | pgdone = 0; | |
1513 | subtotal = 0; /* total bytes processed for current prot grp */ | |
1514 | while (!pgdone) { | |
1515 | if (!sgde) { | |
6a9c52cf JS |
1516 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1517 | "9065 BLKGRD:%s Invalid data segment\n", | |
e2a0a9d6 JS |
1518 | __func__); |
1519 | return 0; | |
1520 | } | |
1521 | bpl++; | |
1522 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
1523 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
1524 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
1525 | ||
1526 | remainder = sg_dma_len(sgde) - split_offset; | |
1527 | ||
1528 | if ((subtotal + remainder) <= protgrp_bytes) { | |
1529 | /* we can use this whole buffer */ | |
1530 | bpl->tus.f.bdeSize = remainder; | |
1531 | split_offset = 0; | |
1532 | ||
1533 | if ((subtotal + remainder) == protgrp_bytes) | |
1534 | pgdone = 1; | |
1535 | } else { | |
1536 | /* must split this buffer with next prot grp */ | |
1537 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
1538 | split_offset += bpl->tus.f.bdeSize; | |
1539 | } | |
1540 | ||
1541 | subtotal += bpl->tus.f.bdeSize; | |
1542 | ||
1543 | if (datadir == DMA_TO_DEVICE) | |
1544 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1545 | else | |
1546 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1547 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1548 | ||
1549 | num_bde++; | |
1550 | curr_data++; | |
1551 | ||
1552 | if (split_offset) | |
1553 | break; | |
1554 | ||
1555 | /* Move to the next s/g segment if possible */ | |
1556 | sgde = sg_next(sgde); | |
6c8eea54 | 1557 | |
e2a0a9d6 JS |
1558 | } |
1559 | ||
1560 | /* are we done ? */ | |
1561 | if (curr_prot == protcnt) { | |
1562 | alldone = 1; | |
1563 | } else if (curr_prot < protcnt) { | |
1564 | /* advance to next prot buffer */ | |
1565 | sgpe = sg_next(sgpe); | |
1566 | bpl++; | |
1567 | ||
1568 | /* update the reference tag */ | |
1569 | reftag += protgrp_blks; | |
1570 | } else { | |
1571 | /* if we're here, we have a bug */ | |
6a9c52cf JS |
1572 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1573 | "9054 BLKGRD: bug in %s\n", __func__); | |
e2a0a9d6 JS |
1574 | } |
1575 | ||
1576 | } while (!alldone); | |
1577 | ||
1578 | out: | |
1579 | ||
e2a0a9d6 JS |
1580 | return num_bde; |
1581 | } | |
1582 | /* | |
1583 | * Given a SCSI command that supports DIF, determine composition of protection | |
1584 | * groups involved in setting up buffer lists | |
1585 | * | |
1586 | * Returns: | |
1587 | * for DIF (for both read and write) | |
1588 | * */ | |
1589 | static int | |
1590 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
1591 | { | |
1592 | int ret = LPFC_PG_TYPE_INVALID; | |
1593 | unsigned char op = scsi_get_prot_op(sc); | |
1594 | ||
1595 | switch (op) { | |
1596 | case SCSI_PROT_READ_STRIP: | |
1597 | case SCSI_PROT_WRITE_INSERT: | |
1598 | ret = LPFC_PG_TYPE_NO_DIF; | |
1599 | break; | |
1600 | case SCSI_PROT_READ_INSERT: | |
1601 | case SCSI_PROT_WRITE_STRIP: | |
1602 | case SCSI_PROT_READ_PASS: | |
1603 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
1604 | ret = LPFC_PG_TYPE_DIF_BUF; |
1605 | break; | |
1606 | default: | |
1607 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1608 | "9021 Unsupported protection op:%d\n", op); | |
1609 | break; | |
1610 | } | |
1611 | ||
1612 | return ret; | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * This is the protection/DIF aware version of | |
1617 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
1618 | * two functions eventually, but for now, it's here | |
1619 | */ | |
1620 | static int | |
1621 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, | |
1622 | struct lpfc_scsi_buf *lpfc_cmd) | |
1623 | { | |
1624 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1625 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1626 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1627 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1628 | uint32_t num_bde = 0; | |
1629 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
1630 | int prot_group_type = 0; | |
1631 | int diflen, fcpdl; | |
1632 | unsigned blksize; | |
1633 | ||
1634 | /* | |
1635 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
1636 | * fcp_rsp regions to the first data bde entry | |
1637 | */ | |
1638 | bpl += 2; | |
1639 | if (scsi_sg_count(scsi_cmnd)) { | |
1640 | /* | |
1641 | * The driver stores the segment count returned from pci_map_sg | |
1642 | * because this a count of dma-mappings used to map the use_sg | |
1643 | * pages. They are not guaranteed to be the same for those | |
1644 | * architectures that implement an IOMMU. | |
1645 | */ | |
1646 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
1647 | scsi_sglist(scsi_cmnd), | |
1648 | scsi_sg_count(scsi_cmnd), datadir); | |
1649 | if (unlikely(!datasegcnt)) | |
1650 | return 1; | |
1651 | ||
1652 | lpfc_cmd->seg_cnt = datasegcnt; | |
1653 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1654 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1655 | "9067 BLKGRD: %s: Too many sg segments" | |
1656 | " from dma_map_sg. Config %d, seg_cnt" | |
1657 | " %d\n", | |
e2a0a9d6 JS |
1658 | __func__, phba->cfg_sg_seg_cnt, |
1659 | lpfc_cmd->seg_cnt); | |
1660 | scsi_dma_unmap(scsi_cmnd); | |
1661 | return 1; | |
1662 | } | |
1663 | ||
1664 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
1665 | ||
1666 | switch (prot_group_type) { | |
1667 | case LPFC_PG_TYPE_NO_DIF: | |
1668 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, | |
1669 | datasegcnt); | |
c9404c9c | 1670 | /* we should have 2 or more entries in buffer list */ |
e2a0a9d6 JS |
1671 | if (num_bde < 2) |
1672 | goto err; | |
1673 | break; | |
1674 | case LPFC_PG_TYPE_DIF_BUF:{ | |
1675 | /* | |
1676 | * This type indicates that protection buffers are | |
1677 | * passed to the driver, so that needs to be prepared | |
1678 | * for DMA | |
1679 | */ | |
1680 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
1681 | scsi_prot_sglist(scsi_cmnd), | |
1682 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
1683 | if (unlikely(!protsegcnt)) { | |
1684 | scsi_dma_unmap(scsi_cmnd); | |
1685 | return 1; | |
1686 | } | |
1687 | ||
1688 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
1689 | if (lpfc_cmd->prot_seg_cnt | |
1690 | > phba->cfg_prot_sg_seg_cnt) { | |
6a9c52cf JS |
1691 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1692 | "9068 BLKGRD: %s: Too many prot sg " | |
1693 | "segments from dma_map_sg. Config %d," | |
e2a0a9d6 JS |
1694 | "prot_seg_cnt %d\n", __func__, |
1695 | phba->cfg_prot_sg_seg_cnt, | |
1696 | lpfc_cmd->prot_seg_cnt); | |
1697 | dma_unmap_sg(&phba->pcidev->dev, | |
1698 | scsi_prot_sglist(scsi_cmnd), | |
1699 | scsi_prot_sg_count(scsi_cmnd), | |
1700 | datadir); | |
1701 | scsi_dma_unmap(scsi_cmnd); | |
1702 | return 1; | |
1703 | } | |
1704 | ||
1705 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
1706 | datasegcnt, protsegcnt); | |
c9404c9c | 1707 | /* we should have 3 or more entries in buffer list */ |
e2a0a9d6 JS |
1708 | if (num_bde < 3) |
1709 | goto err; | |
1710 | break; | |
1711 | } | |
1712 | case LPFC_PG_TYPE_INVALID: | |
1713 | default: | |
1714 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1715 | "9022 Unexpected protection group %i\n", | |
1716 | prot_group_type); | |
1717 | return 1; | |
1718 | } | |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * Finish initializing those IOCB fields that are dependent on the | |
1723 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
1724 | * reinitialized since all iocb memory resources are used many times | |
1725 | * for transmit, receive, and continuation bpl's. | |
1726 | */ | |
1727 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
1728 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
1729 | iocb_cmd->ulpBdeCount = 1; | |
1730 | iocb_cmd->ulpLe = 1; | |
1731 | ||
1732 | fcpdl = scsi_bufflen(scsi_cmnd); | |
1733 | ||
1734 | if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) { | |
1735 | /* | |
1736 | * We are in DIF Type 1 mode | |
1737 | * Every data block has a 8 byte DIF (trailer) | |
1738 | * attached to it. Must ajust FCP data length | |
1739 | */ | |
1740 | blksize = lpfc_cmd_blksize(scsi_cmnd); | |
1741 | diflen = (fcpdl / blksize) * 8; | |
1742 | fcpdl += diflen; | |
1743 | } | |
1744 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
1745 | ||
1746 | /* | |
1747 | * Due to difference in data length between DIF/non-DIF paths, | |
1748 | * we need to set word 4 of IOCB here | |
1749 | */ | |
1750 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
1751 | ||
dea3101e | 1752 | return 0; |
e2a0a9d6 JS |
1753 | err: |
1754 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1755 | "9023 Could not setup all needed BDE's" | |
1756 | "prot_group_type=%d, num_bde=%d\n", | |
1757 | prot_group_type, num_bde); | |
1758 | return 1; | |
1759 | } | |
1760 | ||
1761 | /* | |
1762 | * This function checks for BlockGuard errors detected by | |
1763 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
1764 | * sense buffer will be set accordingly, paired with | |
1765 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
1766 | * detected corruption. | |
1767 | * | |
1768 | * Returns: | |
1769 | * 0 - No error found | |
1770 | * 1 - BlockGuard error found | |
1771 | * -1 - Internal error (bad profile, ...etc) | |
1772 | */ | |
1773 | static int | |
1774 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
1775 | struct lpfc_iocbq *pIocbOut) | |
1776 | { | |
1777 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
1778 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
1779 | int ret = 0; | |
1780 | uint32_t bghm = bgf->bghm; | |
1781 | uint32_t bgstat = bgf->bgstat; | |
1782 | uint64_t failing_sector = 0; | |
1783 | ||
6a9c52cf JS |
1784 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd" |
1785 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
e2a0a9d6 | 1786 | "bgstat=0x%x bghm=0x%x\n", |
87b5c328 | 1787 | cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd), |
83096ebf | 1788 | blk_rq_sectors(cmd->request), bgstat, bghm); |
e2a0a9d6 JS |
1789 | |
1790 | spin_lock(&_dump_buf_lock); | |
1791 | if (!_dump_buf_done) { | |
6a9c52cf JS |
1792 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
1793 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 1794 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 1795 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
1796 | |
1797 | /* If we have a prot sgl, save the DIF buffer */ | |
1798 | if (lpfc_prot_group_type(phba, cmd) == | |
1799 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
1800 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
1801 | "Saving DIF for %u blocks to debugfs\n", | |
1802 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
1803 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
1804 | } |
1805 | ||
1806 | _dump_buf_done = 1; | |
1807 | } | |
1808 | spin_unlock(&_dump_buf_lock); | |
1809 | ||
1810 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
1811 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1812 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid" |
1813 | " BlockGuard profile. bgstat:0x%x\n", | |
1814 | bgstat); | |
e2a0a9d6 JS |
1815 | ret = (-1); |
1816 | goto out; | |
1817 | } | |
1818 | ||
1819 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
1820 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1821 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: " |
1822 | "Invalid BlockGuard DIF Block. bgstat:0x%x\n", | |
e2a0a9d6 JS |
1823 | bgstat); |
1824 | ret = (-1); | |
1825 | goto out; | |
1826 | } | |
1827 | ||
1828 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
1829 | ret = 1; | |
1830 | ||
1831 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1832 | 0x10, 0x1); | |
1c9fbafc | 1833 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1834 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1835 | phba->bg_guard_err_cnt++; | |
6a9c52cf JS |
1836 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1837 | "9055 BLKGRD: guard_tag error\n"); | |
e2a0a9d6 JS |
1838 | } |
1839 | ||
1840 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
1841 | ret = 1; | |
1842 | ||
1843 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1844 | 0x10, 0x3); | |
1c9fbafc | 1845 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1846 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1847 | ||
1848 | phba->bg_reftag_err_cnt++; | |
6a9c52cf JS |
1849 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1850 | "9056 BLKGRD: ref_tag error\n"); | |
e2a0a9d6 JS |
1851 | } |
1852 | ||
1853 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
1854 | ret = 1; | |
1855 | ||
1856 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1857 | 0x10, 0x2); | |
1c9fbafc | 1858 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1859 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1860 | ||
1861 | phba->bg_apptag_err_cnt++; | |
6a9c52cf JS |
1862 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1863 | "9061 BLKGRD: app_tag error\n"); | |
e2a0a9d6 JS |
1864 | } |
1865 | ||
1866 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
1867 | /* | |
1868 | * setup sense data descriptor 0 per SPC-4 as an information | |
1869 | * field, and put the failing LBA in it | |
1870 | */ | |
1871 | cmd->sense_buffer[8] = 0; /* Information */ | |
1872 | cmd->sense_buffer[9] = 0xa; /* Add. length */ | |
2344b5b6 | 1873 | bghm /= cmd->device->sector_size; |
e2a0a9d6 JS |
1874 | |
1875 | failing_sector = scsi_get_lba(cmd); | |
1876 | failing_sector += bghm; | |
1877 | ||
1878 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[10]); | |
1879 | } | |
1880 | ||
1881 | if (!ret) { | |
1882 | /* No error was reported - problem in FW? */ | |
1883 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1884 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1885 | "9057 BLKGRD: no errors reported!\n"); | |
e2a0a9d6 JS |
1886 | } |
1887 | ||
1888 | out: | |
1889 | return ret; | |
dea3101e JB |
1890 | } |
1891 | ||
da0436e9 JS |
1892 | /** |
1893 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
1894 | * @phba: The Hba for which this call is being executed. | |
1895 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1896 | * | |
1897 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
1898 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
1899 | * | |
1900 | * Return codes: | |
6c8eea54 JS |
1901 | * 1 - Error |
1902 | * 0 - Success | |
da0436e9 JS |
1903 | **/ |
1904 | static int | |
1905 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
1906 | { | |
1907 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1908 | struct scatterlist *sgel = NULL; | |
1909 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1910 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
1911 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1912 | dma_addr_t physaddr; | |
1913 | uint32_t num_bde = 0; | |
1914 | uint32_t dma_len; | |
1915 | uint32_t dma_offset = 0; | |
1916 | int nseg; | |
1917 | ||
1918 | /* | |
1919 | * There are three possibilities here - use scatter-gather segment, use | |
1920 | * the single mapping, or neither. Start the lpfc command prep by | |
1921 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1922 | * data bde entry. | |
1923 | */ | |
1924 | if (scsi_sg_count(scsi_cmnd)) { | |
1925 | /* | |
1926 | * The driver stores the segment count returned from pci_map_sg | |
1927 | * because this a count of dma-mappings used to map the use_sg | |
1928 | * pages. They are not guaranteed to be the same for those | |
1929 | * architectures that implement an IOMMU. | |
1930 | */ | |
1931 | ||
1932 | nseg = scsi_dma_map(scsi_cmnd); | |
1933 | if (unlikely(!nseg)) | |
1934 | return 1; | |
1935 | sgl += 1; | |
1936 | /* clear the last flag in the fcp_rsp map entry */ | |
1937 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1938 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1939 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1940 | sgl += 1; | |
1941 | ||
1942 | lpfc_cmd->seg_cnt = nseg; | |
1943 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1944 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
1945 | " %s: Too many sg segments from " | |
1946 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
1947 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 JS |
1948 | lpfc_cmd->seg_cnt); |
1949 | scsi_dma_unmap(scsi_cmnd); | |
1950 | return 1; | |
1951 | } | |
1952 | ||
1953 | /* | |
1954 | * The driver established a maximum scatter-gather segment count | |
1955 | * during probe that limits the number of sg elements in any | |
1956 | * single scsi command. Just run through the seg_cnt and format | |
1957 | * the sge's. | |
1958 | * When using SLI-3 the driver will try to fit all the BDEs into | |
1959 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1960 | * does for SLI-2 mode. | |
1961 | */ | |
1962 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
1963 | physaddr = sg_dma_address(sgel); | |
1964 | dma_len = sg_dma_len(sgel); | |
da0436e9 JS |
1965 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); |
1966 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
1967 | if ((num_bde + 1) == nseg) | |
1968 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1969 | else | |
1970 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1971 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
1972 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 1973 | sgl->sge_len = cpu_to_le32(dma_len); |
da0436e9 JS |
1974 | dma_offset += dma_len; |
1975 | sgl++; | |
1976 | } | |
1977 | } else { | |
1978 | sgl += 1; | |
1979 | /* clear the last flag in the fcp_rsp map entry */ | |
1980 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1981 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1982 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1983 | } | |
1984 | ||
1985 | /* | |
1986 | * Finish initializing those IOCB fields that are dependent on the | |
1987 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
1988 | * explicitly reinitialized. | |
1989 | * all iocb memory resources are reused. | |
1990 | */ | |
1991 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
1992 | ||
1993 | /* | |
1994 | * Due to difference in data length between DIF/non-DIF paths, | |
1995 | * we need to set word 4 of IOCB here | |
1996 | */ | |
1997 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
1998 | return 0; | |
1999 | } | |
2000 | ||
3772a991 JS |
2001 | /** |
2002 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
2003 | * @phba: The Hba for which this call is being executed. | |
2004 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
2005 | * | |
2006 | * This routine wraps the actual DMA mapping function pointer from the | |
2007 | * lpfc_hba struct. | |
2008 | * | |
2009 | * Return codes: | |
6c8eea54 JS |
2010 | * 1 - Error |
2011 | * 0 - Success | |
3772a991 JS |
2012 | **/ |
2013 | static inline int | |
2014 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
2015 | { | |
2016 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2017 | } | |
2018 | ||
ea2151b4 | 2019 | /** |
3621a710 | 2020 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
2021 | * @phba: Pointer to hba context object. |
2022 | * @vport: Pointer to vport object. | |
2023 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
2024 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
2025 | * | |
2026 | * This function posts an event when there is a SCSI command reporting | |
2027 | * error from the scsi device. | |
2028 | **/ | |
2029 | static void | |
2030 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
2031 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
2032 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
2033 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
2034 | uint32_t resp_info = fcprsp->rspStatus2; | |
2035 | uint32_t scsi_status = fcprsp->rspStatus3; | |
2036 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
2037 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
2038 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
2039 | unsigned long flags; | |
2040 | ||
2041 | /* If there is queuefull or busy condition send a scsi event */ | |
2042 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
2043 | (cmnd->result == SAM_STAT_BUSY)) { | |
2044 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
2045 | if (!fast_path_evt) | |
2046 | return; | |
2047 | fast_path_evt->un.scsi_evt.event_type = | |
2048 | FC_REG_SCSI_EVENT; | |
2049 | fast_path_evt->un.scsi_evt.subcategory = | |
2050 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
2051 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
2052 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
2053 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
2054 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2055 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
2056 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2057 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
2058 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
2059 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
2060 | if (!fast_path_evt) | |
2061 | return; | |
2062 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
2063 | FC_REG_SCSI_EVENT; | |
2064 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
2065 | LPFC_EVENT_CHECK_COND; | |
2066 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
2067 | cmnd->device->lun; | |
2068 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
2069 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2070 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
2071 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2072 | fast_path_evt->un.check_cond_evt.sense_key = | |
2073 | cmnd->sense_buffer[2] & 0xf; | |
2074 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
2075 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
2076 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
2077 | fcpi_parm && | |
2078 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
2079 | ((scsi_status == SAM_STAT_GOOD) && | |
2080 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
2081 | /* | |
2082 | * If status is good or resid does not match with fcp_param and | |
2083 | * there is valid fcpi_parm, then there is a read_check error | |
2084 | */ | |
2085 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
2086 | if (!fast_path_evt) | |
2087 | return; | |
2088 | fast_path_evt->un.read_check_error.header.event_type = | |
2089 | FC_REG_FABRIC_EVENT; | |
2090 | fast_path_evt->un.read_check_error.header.subcategory = | |
2091 | LPFC_EVENT_FCPRDCHKERR; | |
2092 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
2093 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2094 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
2095 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2096 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
2097 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
2098 | fast_path_evt->un.read_check_error.fcpiparam = | |
2099 | fcpi_parm; | |
2100 | } else | |
2101 | return; | |
2102 | ||
2103 | fast_path_evt->vport = vport; | |
2104 | spin_lock_irqsave(&phba->hbalock, flags); | |
2105 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
2106 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2107 | lpfc_worker_wake_up(phba); | |
2108 | return; | |
2109 | } | |
9bad7671 JS |
2110 | |
2111 | /** | |
f1126688 | 2112 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 2113 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
2114 | * @psb: The scsi buffer which is going to be un-mapped. |
2115 | * | |
2116 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 2117 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 2118 | **/ |
bcf4dbfa | 2119 | static void |
f1126688 | 2120 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
2121 | { |
2122 | /* | |
2123 | * There are only two special cases to consider. (1) the scsi command | |
2124 | * requested scatter-gather usage or (2) the scsi command allocated | |
2125 | * a request buffer, but did not request use_sg. There is a third | |
2126 | * case, but it does not require resource deallocation. | |
2127 | */ | |
a0b4f78f FT |
2128 | if (psb->seg_cnt > 0) |
2129 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
2130 | if (psb->prot_seg_cnt > 0) |
2131 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
2132 | scsi_prot_sg_count(psb->pCmd), | |
2133 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
2134 | } |
2135 | ||
9bad7671 | 2136 | /** |
3621a710 | 2137 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
2138 | * @vport: The virtual port for which this call is being executed. |
2139 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2140 | * @rsp_iocb: The response IOCB which contains FCP error. | |
2141 | * | |
2142 | * This routine is called to process response IOCB with status field | |
2143 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
2144 | * based upon SCSI and FCP error. | |
2145 | **/ | |
dea3101e | 2146 | static void |
2e0fef85 JS |
2147 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2148 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e JB |
2149 | { |
2150 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
2151 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
2152 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 2153 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e JB |
2154 | uint32_t resp_info = fcprsp->rspStatus2; |
2155 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 2156 | uint32_t *lp; |
dea3101e JB |
2157 | uint32_t host_status = DID_OK; |
2158 | uint32_t rsplen = 0; | |
c7743956 | 2159 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 2160 | |
ea2151b4 | 2161 | |
dea3101e JB |
2162 | /* |
2163 | * If this is a task management command, there is no | |
2164 | * scsi packet associated with this lpfc_cmd. The driver | |
2165 | * consumes it. | |
2166 | */ | |
2167 | if (fcpcmd->fcpCntl2) { | |
2168 | scsi_status = 0; | |
2169 | goto out; | |
2170 | } | |
2171 | ||
6a9c52cf JS |
2172 | if (resp_info & RSP_LEN_VALID) { |
2173 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
e40a02c1 | 2174 | if (rsplen != 0 && rsplen != 4 && rsplen != 8) { |
6a9c52cf JS |
2175 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2176 | "2719 Invalid response length: " | |
2177 | "tgt x%x lun x%x cmnd x%x rsplen x%x\n", | |
2178 | cmnd->device->id, | |
2179 | cmnd->device->lun, cmnd->cmnd[0], | |
2180 | rsplen); | |
2181 | host_status = DID_ERROR; | |
2182 | goto out; | |
2183 | } | |
e40a02c1 JS |
2184 | if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { |
2185 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
2186 | "2757 Protocol failure detected during " | |
2187 | "processing of FCP I/O op: " | |
2188 | "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n", | |
2189 | cmnd->device->id, | |
2190 | cmnd->device->lun, cmnd->cmnd[0], | |
2191 | fcprsp->rspInfo3); | |
2192 | host_status = DID_ERROR; | |
2193 | goto out; | |
2194 | } | |
6a9c52cf JS |
2195 | } |
2196 | ||
c7743956 JS |
2197 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
2198 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
2199 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
2200 | snslen = SCSI_SENSE_BUFFERSIZE; | |
2201 | ||
2202 | if (resp_info & RSP_LEN_VALID) | |
2203 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
2204 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
2205 | } | |
2206 | lp = (uint32_t *)cmnd->sense_buffer; | |
2207 | ||
2208 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
2209 | logit = LOG_FCP; | |
2210 | ||
e8b62011 | 2211 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 2212 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
2213 | "Data: x%x x%x x%x x%x x%x\n", |
2214 | cmnd->cmnd[0], scsi_status, | |
2215 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
2216 | be32_to_cpu(fcprsp->rspResId), | |
2217 | be32_to_cpu(fcprsp->rspSnsLen), | |
2218 | be32_to_cpu(fcprsp->rspRspLen), | |
2219 | fcprsp->rspInfo3); | |
dea3101e | 2220 | |
a0b4f78f | 2221 | scsi_set_resid(cmnd, 0); |
dea3101e | 2222 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 2223 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 2224 | |
e8b62011 | 2225 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2226 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
2227 | "residual %d Data: x%x x%x x%x\n", |
2228 | be32_to_cpu(fcpcmd->fcpDl), | |
2229 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
2230 | cmnd->underflow); | |
dea3101e | 2231 | |
7054a606 JS |
2232 | /* |
2233 | * If there is an under run check if under run reported by | |
2234 | * storage array is same as the under run reported by HBA. | |
2235 | * If this is not same, there is a dropped frame. | |
2236 | */ | |
2237 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
2238 | fcpi_parm && | |
a0b4f78f | 2239 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
2240 | lpfc_printf_vlog(vport, KERN_WARNING, |
2241 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 2242 | "9026 FCP Read Check Error " |
e8b62011 JS |
2243 | "and Underrun Data: x%x x%x x%x x%x\n", |
2244 | be32_to_cpu(fcpcmd->fcpDl), | |
2245 | scsi_get_resid(cmnd), fcpi_parm, | |
2246 | cmnd->cmnd[0]); | |
a0b4f78f | 2247 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
2248 | host_status = DID_ERROR; |
2249 | } | |
dea3101e JB |
2250 | /* |
2251 | * The cmnd->underflow is the minimum number of bytes that must | |
2252 | * be transfered for this command. Provided a sense condition | |
2253 | * is not present, make sure the actual amount transferred is at | |
2254 | * least the underflow value or fail. | |
2255 | */ | |
2256 | if (!(resp_info & SNS_LEN_VALID) && | |
2257 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
2258 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
2259 | < cmnd->underflow)) { | |
e8b62011 | 2260 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2261 | "9027 FCP command x%x residual " |
e8b62011 JS |
2262 | "underrun converted to error " |
2263 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 2264 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 2265 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e JB |
2266 | host_status = DID_ERROR; |
2267 | } | |
2268 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 2269 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2270 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 2271 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 2272 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e JB |
2273 | host_status = DID_ERROR; |
2274 | ||
2275 | /* | |
2276 | * Check SLI validation that all the transfer was actually done | |
2277 | * (fcpi_parm should be zero). Apply check only to reads. | |
2278 | */ | |
2279 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
2280 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 | 2281 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
e2a0a9d6 | 2282 | "9029 FCP Read Check Error Data: " |
e8b62011 JS |
2283 | "x%x x%x x%x x%x\n", |
2284 | be32_to_cpu(fcpcmd->fcpDl), | |
2285 | be32_to_cpu(fcprsp->rspResId), | |
2286 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 2287 | host_status = DID_ERROR; |
a0b4f78f | 2288 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e JB |
2289 | } |
2290 | ||
2291 | out: | |
2292 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 2293 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e JB |
2294 | } |
2295 | ||
9bad7671 | 2296 | /** |
3621a710 | 2297 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
2298 | * @phba: The Hba for which this call is being executed. |
2299 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 2300 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
2301 | * |
2302 | * This routine assigns scsi command result by looking into response IOCB | |
2303 | * status field appropriately. This routine handles QUEUE FULL condition as | |
2304 | * well by ramping down device queue depth. | |
2305 | **/ | |
dea3101e JB |
2306 | static void |
2307 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
2308 | struct lpfc_iocbq *pIocbOut) | |
2309 | { | |
2310 | struct lpfc_scsi_buf *lpfc_cmd = | |
2311 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 2312 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e JB |
2313 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
2314 | struct lpfc_nodelist *pnode = rdata->pnode; | |
75baf696 | 2315 | struct scsi_cmnd *cmd; |
445cf4f4 | 2316 | int result; |
a257bf90 | 2317 | struct scsi_device *tmp_sdev; |
5ffc266e | 2318 | int depth; |
fa61a54e | 2319 | unsigned long flags; |
ea2151b4 | 2320 | struct lpfc_fast_path_event *fast_path_evt; |
75baf696 | 2321 | struct Scsi_Host *shost; |
a257bf90 | 2322 | uint32_t queue_depth, scsi_id; |
dea3101e | 2323 | |
75baf696 JS |
2324 | /* Sanity check on return of outstanding command */ |
2325 | if (!(lpfc_cmd->pCmd)) | |
2326 | return; | |
2327 | cmd = lpfc_cmd->pCmd; | |
2328 | shost = cmd->device->host; | |
2329 | ||
dea3101e JB |
2330 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; |
2331 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
341af102 JS |
2332 | /* pick up SLI4 exhange busy status from HBA */ |
2333 | lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; | |
2334 | ||
109f6ed0 JS |
2335 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
2336 | atomic_dec(&pnode->cmd_pending); | |
dea3101e JB |
2337 | |
2338 | if (lpfc_cmd->status) { | |
2339 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
2340 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
2341 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
2342 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
2343 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
2344 | ||
e8b62011 | 2345 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2346 | "9030 FCP cmd x%x failed <%d/%d> " |
e8b62011 JS |
2347 | "status: x%x result: x%x Data: x%x x%x\n", |
2348 | cmd->cmnd[0], | |
2349 | cmd->device ? cmd->device->id : 0xffff, | |
2350 | cmd->device ? cmd->device->lun : 0xffff, | |
2351 | lpfc_cmd->status, lpfc_cmd->result, | |
2352 | pIocbOut->iocb.ulpContext, | |
2353 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e JB |
2354 | |
2355 | switch (lpfc_cmd->status) { | |
2356 | case IOSTAT_FCP_RSP_ERROR: | |
2357 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 2358 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e JB |
2359 | break; |
2360 | case IOSTAT_NPORT_BSY: | |
2361 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 2362 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
2363 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
2364 | if (!fast_path_evt) | |
2365 | break; | |
2366 | fast_path_evt->un.fabric_evt.event_type = | |
2367 | FC_REG_FABRIC_EVENT; | |
2368 | fast_path_evt->un.fabric_evt.subcategory = | |
2369 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
2370 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
2371 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
2372 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
2373 | &pnode->nlp_portname, | |
2374 | sizeof(struct lpfc_name)); | |
2375 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
2376 | &pnode->nlp_nodename, | |
2377 | sizeof(struct lpfc_name)); | |
2378 | } | |
2379 | fast_path_evt->vport = vport; | |
2380 | fast_path_evt->work_evt.evt = | |
2381 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
2382 | spin_lock_irqsave(&phba->hbalock, flags); | |
2383 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
2384 | &phba->work_list); | |
2385 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2386 | lpfc_worker_wake_up(phba); | |
dea3101e | 2387 | break; |
92d7f7b0 | 2388 | case IOSTAT_LOCAL_REJECT: |
d7c255b2 | 2389 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 2390 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
b92938b4 JS |
2391 | lpfc_cmd->result == IOERR_ABORT_REQUESTED || |
2392 | lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { | |
92d7f7b0 | 2393 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 2394 | break; |
e2a0a9d6 JS |
2395 | } |
2396 | ||
2397 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || | |
2398 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
2399 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
2400 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
2401 | /* | |
2402 | * This is a response for a BG enabled | |
2403 | * cmd. Parse BG error | |
2404 | */ | |
2405 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
2406 | pIocbOut); | |
2407 | break; | |
2408 | } else { | |
2409 | lpfc_printf_vlog(vport, KERN_WARNING, | |
2410 | LOG_BG, | |
2411 | "9031 non-zero BGSTAT " | |
6a9c52cf | 2412 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
2413 | } |
2414 | } | |
2415 | ||
2416 | /* else: fall through */ | |
dea3101e JB |
2417 | default: |
2418 | cmd->result = ScsiResult(DID_ERROR, 0); | |
2419 | break; | |
2420 | } | |
2421 | ||
58da1ffb | 2422 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 2423 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
2424 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
2425 | SAM_STAT_BUSY); | |
dea3101e JB |
2426 | } else { |
2427 | cmd->result = ScsiResult(DID_OK, 0); | |
2428 | } | |
2429 | ||
2430 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
2431 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
2432 | ||
e8b62011 JS |
2433 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2434 | "0710 Iodone <%d/%d> cmd %p, error " | |
2435 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
2436 | cmd->device->id, cmd->device->lun, cmd, | |
2437 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
2438 | scsi_get_resid(cmd)); | |
dea3101e JB |
2439 | } |
2440 | ||
ea2151b4 | 2441 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 2442 | result = cmd->result; |
977b5a0a JS |
2443 | if (vport->cfg_max_scsicmpl_time && |
2444 | time_after(jiffies, lpfc_cmd->start_time + | |
2445 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 2446 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
2447 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
2448 | if (pnode->cmd_qdepth > | |
2449 | atomic_read(&pnode->cmd_pending) && | |
2450 | (atomic_read(&pnode->cmd_pending) > | |
2451 | LPFC_MIN_TGT_QDEPTH) && | |
2452 | ((cmd->cmnd[0] == READ_10) || | |
2453 | (cmd->cmnd[0] == WRITE_10))) | |
2454 | pnode->cmd_qdepth = | |
2455 | atomic_read(&pnode->cmd_pending); | |
2456 | ||
2457 | pnode->last_change_time = jiffies; | |
2458 | } | |
a257bf90 | 2459 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 2460 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
7dc517df | 2461 | if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) && |
977b5a0a | 2462 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 2463 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 2464 | spin_lock_irqsave(shost->host_lock, flags); |
7dc517df JS |
2465 | depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT |
2466 | / 100; | |
2467 | depth = depth ? depth : 1; | |
2468 | pnode->cmd_qdepth += depth; | |
2469 | if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth) | |
2470 | pnode->cmd_qdepth = vport->cfg_tgt_queue_depth; | |
109f6ed0 | 2471 | pnode->last_change_time = jiffies; |
a257bf90 | 2472 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 2473 | } |
977b5a0a JS |
2474 | } |
2475 | ||
1dcb58e5 | 2476 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
2477 | |
2478 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
2479 | queue_depth = cmd->device->queue_depth; | |
2480 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
2481 | cmd->scsi_done(cmd); |
2482 | ||
b808608b | 2483 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
2484 | /* |
2485 | * If there is a thread waiting for command completion | |
2486 | * wake up the thread. | |
2487 | */ | |
a257bf90 | 2488 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2489 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2490 | if (lpfc_cmd->waitq) |
2491 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2492 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
2493 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
2494 | return; | |
2495 | } | |
2496 | ||
92d7f7b0 | 2497 | if (!result) |
a257bf90 | 2498 | lpfc_rampup_queue_depth(vport, queue_depth); |
92d7f7b0 | 2499 | |
445cf4f4 JSEC |
2500 | /* |
2501 | * Check for queue full. If the lun is reporting queue full, then | |
2502 | * back off the lun queue depth to prevent target overloads. | |
2503 | */ | |
58da1ffb JS |
2504 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
2505 | NLP_CHK_NODE_ACT(pnode)) { | |
a257bf90 JS |
2506 | shost_for_each_device(tmp_sdev, shost) { |
2507 | if (tmp_sdev->id != scsi_id) | |
445cf4f4 JSEC |
2508 | continue; |
2509 | depth = scsi_track_queue_full(tmp_sdev, | |
5ffc266e JS |
2510 | tmp_sdev->queue_depth-1); |
2511 | if (depth <= 0) | |
2512 | continue; | |
e8b62011 JS |
2513 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2514 | "0711 detected queue full - lun queue " | |
2515 | "depth adjusted to %d.\n", depth); | |
ea2151b4 | 2516 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
5ffc266e JS |
2517 | pnode, |
2518 | tmp_sdev->lun, | |
2519 | depth+1, depth); | |
445cf4f4 JSEC |
2520 | } |
2521 | } | |
2522 | ||
fa61a54e JS |
2523 | /* |
2524 | * If there is a thread waiting for command completion | |
2525 | * wake up the thread. | |
2526 | */ | |
a257bf90 | 2527 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2528 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2529 | if (lpfc_cmd->waitq) |
2530 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2531 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 2532 | |
0bd4ca25 | 2533 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
2534 | } |
2535 | ||
34b02dcd | 2536 | /** |
3621a710 | 2537 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
2538 | * @data: A pointer to the immediate command data portion of the IOCB. |
2539 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
2540 | * | |
2541 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
2542 | * byte swapping the data to big endian format for transmission on the wire. | |
2543 | **/ | |
2544 | static void | |
2545 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
2546 | { | |
2547 | int i, j; | |
2548 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
2549 | i += sizeof(uint32_t), j++) { | |
2550 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
2551 | } | |
2552 | } | |
2553 | ||
9bad7671 | 2554 | /** |
f1126688 | 2555 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
2556 | * @vport: The virtual port for which this call is being executed. |
2557 | * @lpfc_cmd: The scsi command which needs to send. | |
2558 | * @pnode: Pointer to lpfc_nodelist. | |
2559 | * | |
2560 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 2561 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 2562 | **/ |
dea3101e | 2563 | static void |
f1126688 | 2564 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 2565 | struct lpfc_nodelist *pnode) |
dea3101e | 2566 | { |
2e0fef85 | 2567 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
2568 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
2569 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2570 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2571 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
2572 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 2573 | char tag[2]; |
dea3101e | 2574 | |
58da1ffb JS |
2575 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
2576 | return; | |
2577 | ||
dea3101e | 2578 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
2579 | /* clear task management bits */ |
2580 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 2581 | |
91886523 JSEC |
2582 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
2583 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e JB |
2584 | |
2585 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
2586 | ||
7e2b19fb JS |
2587 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
2588 | switch (tag[0]) { | |
dea3101e JB |
2589 | case HEAD_OF_QUEUE_TAG: |
2590 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
2591 | break; | |
2592 | case ORDERED_QUEUE_TAG: | |
2593 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
2594 | break; | |
2595 | default: | |
2596 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
2597 | break; | |
2598 | } | |
2599 | } else | |
2600 | fcp_cmnd->fcpCntl1 = 0; | |
2601 | ||
2602 | /* | |
2603 | * There are three possibilities here - use scatter-gather segment, use | |
2604 | * the single mapping, or neither. Start the lpfc command prep by | |
2605 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2606 | * data bde entry. | |
2607 | */ | |
a0b4f78f | 2608 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
2609 | if (datadir == DMA_TO_DEVICE) { |
2610 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
3772a991 JS |
2611 | if (phba->sli_rev < LPFC_SLI_REV4) { |
2612 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2613 | iocb_cmd->ulpPU = 0; | |
2614 | } else | |
2615 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e JB |
2616 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
2617 | phba->fc4OutputRequests++; | |
2618 | } else { | |
2619 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
2620 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e JB |
2621 | fcp_cmnd->fcpCntl3 = READ_DATA; |
2622 | phba->fc4InputRequests++; | |
2623 | } | |
2624 | } else { | |
2625 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
2626 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2627 | iocb_cmd->ulpPU = 0; | |
2628 | fcp_cmnd->fcpCntl3 = 0; | |
2629 | phba->fc4ControlRequests++; | |
2630 | } | |
e2a0a9d6 JS |
2631 | if (phba->sli_rev == 3 && |
2632 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2633 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e JB |
2634 | /* |
2635 | * Finish initializing those IOCB fields that are independent | |
2636 | * of the scsi_cmnd request_buffer | |
2637 | */ | |
2638 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
2639 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
2640 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
2641 | else |
2642 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e JB |
2643 | |
2644 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
2645 | piocbq->context1 = lpfc_cmd; | |
2646 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
2647 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 2648 | piocbq->vport = vport; |
dea3101e JB |
2649 | } |
2650 | ||
da0436e9 | 2651 | /** |
f1126688 | 2652 | * lpfc_scsi_prep_task_mgmt_cmnd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
2653 | * @vport: The virtual port for which this call is being executed. |
2654 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2655 | * @lun: Logical unit number. | |
2656 | * @task_mgmt_cmd: SCSI task management command. | |
2657 | * | |
3772a991 JS |
2658 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
2659 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
2660 | * |
2661 | * Return codes: | |
2662 | * 0 - Error | |
2663 | * 1 - Success | |
2664 | **/ | |
dea3101e | 2665 | static int |
f1126688 | 2666 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 2667 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 2668 | unsigned int lun, |
dea3101e JB |
2669 | uint8_t task_mgmt_cmd) |
2670 | { | |
dea3101e JB |
2671 | struct lpfc_iocbq *piocbq; |
2672 | IOCB_t *piocb; | |
2673 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 2674 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e JB |
2675 | struct lpfc_nodelist *ndlp = rdata->pnode; |
2676 | ||
58da1ffb JS |
2677 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
2678 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 2679 | return 0; |
dea3101e | 2680 | |
dea3101e | 2681 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
2682 | piocbq->vport = vport; |
2683 | ||
dea3101e JB |
2684 | piocb = &piocbq->iocb; |
2685 | ||
2686 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
2687 | /* Clear out any old data in the FCP command area */ |
2688 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
2689 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 2690 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
2691 | if (vport->phba->sli_rev == 3 && |
2692 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2693 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 2694 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e JB |
2695 | piocb->ulpContext = ndlp->nlp_rpi; |
2696 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
2697 | piocb->ulpFCP2Rcvy = 1; | |
2698 | } | |
2699 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
2700 | ||
2701 | /* ulpTimeout is only one byte */ | |
2702 | if (lpfc_cmd->timeout > 0xff) { | |
2703 | /* | |
2704 | * Do not timeout the command at the firmware level. | |
2705 | * The driver will provide the timeout mechanism. | |
2706 | */ | |
2707 | piocb->ulpTimeout = 0; | |
f1126688 | 2708 | } else |
dea3101e | 2709 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 2710 | |
f1126688 JS |
2711 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
2712 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 2713 | |
f1126688 | 2714 | return 1; |
3772a991 JS |
2715 | } |
2716 | ||
2717 | /** | |
2718 | * lpfc_scsi_api_table_setup - Set up scsi api fucntion jump table | |
2719 | * @phba: The hba struct for which this call is being executed. | |
2720 | * @dev_grp: The HBA PCI-Device group number. | |
2721 | * | |
2722 | * This routine sets up the SCSI interface API function jump table in @phba | |
2723 | * struct. | |
2724 | * Returns: 0 - success, -ENODEV - failure. | |
2725 | **/ | |
2726 | int | |
2727 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
2728 | { | |
2729 | ||
f1126688 JS |
2730 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
2731 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
2732 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; | |
2733 | ||
3772a991 JS |
2734 | switch (dev_grp) { |
2735 | case LPFC_PCI_DEV_LP: | |
2736 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
2737 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
3772a991 JS |
2738 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
2739 | break; | |
da0436e9 JS |
2740 | case LPFC_PCI_DEV_OC: |
2741 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
2742 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
da0436e9 JS |
2743 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
2744 | break; | |
3772a991 JS |
2745 | default: |
2746 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
2747 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
2748 | dev_grp); | |
2749 | return -ENODEV; | |
2750 | break; | |
2751 | } | |
2752 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; | |
2753 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; | |
84d1b006 | 2754 | phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; |
3772a991 JS |
2755 | return 0; |
2756 | } | |
2757 | ||
9bad7671 | 2758 | /** |
3621a710 | 2759 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
2760 | * @phba: The Hba for which this call is being executed. |
2761 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
2762 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
2763 | * | |
2764 | * This routine is IOCB completion routine for device reset and target reset | |
2765 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
2766 | **/ | |
7054a606 JS |
2767 | static void |
2768 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
2769 | struct lpfc_iocbq *cmdiocbq, | |
2770 | struct lpfc_iocbq *rspiocbq) | |
2771 | { | |
2772 | struct lpfc_scsi_buf *lpfc_cmd = | |
2773 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
2774 | if (lpfc_cmd) | |
2775 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2776 | return; | |
2777 | } | |
2778 | ||
9bad7671 | 2779 | /** |
3621a710 | 2780 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
2781 | * @host: The scsi host for which this call is being executed. |
2782 | * | |
2783 | * This routine provides module information about hba. | |
2784 | * | |
2785 | * Reutrn code: | |
2786 | * Pointer to char - Success. | |
2787 | **/ | |
dea3101e JB |
2788 | const char * |
2789 | lpfc_info(struct Scsi_Host *host) | |
2790 | { | |
2e0fef85 JS |
2791 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
2792 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
2793 | int len; |
2794 | static char lpfcinfobuf[384]; | |
2795 | ||
2796 | memset(lpfcinfobuf,0,384); | |
2797 | if (phba && phba->pcidev){ | |
2798 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
2799 | len = strlen(lpfcinfobuf); | |
2800 | snprintf(lpfcinfobuf + len, | |
2801 | 384-len, | |
2802 | " on PCI bus %02x device %02x irq %d", | |
2803 | phba->pcidev->bus->number, | |
2804 | phba->pcidev->devfn, | |
2805 | phba->pcidev->irq); | |
2806 | len = strlen(lpfcinfobuf); | |
2807 | if (phba->Port[0]) { | |
2808 | snprintf(lpfcinfobuf + len, | |
2809 | 384-len, | |
2810 | " port %s", | |
2811 | phba->Port); | |
2812 | } | |
65467b6b JS |
2813 | len = strlen(lpfcinfobuf); |
2814 | if (phba->sli4_hba.link_state.logical_speed) { | |
2815 | snprintf(lpfcinfobuf + len, | |
2816 | 384-len, | |
2817 | " Logical Link Speed: %d Mbps", | |
2818 | phba->sli4_hba.link_state.logical_speed * 10); | |
2819 | } | |
dea3101e JB |
2820 | } |
2821 | return lpfcinfobuf; | |
2822 | } | |
2823 | ||
9bad7671 | 2824 | /** |
3621a710 | 2825 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
2826 | * @phba: The Hba for which this call is being executed. |
2827 | * | |
2828 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
2829 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
2830 | **/ | |
875fbdfe JSEC |
2831 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
2832 | { | |
2833 | unsigned long poll_tmo_expires = | |
2834 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
2835 | ||
2836 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
2837 | mod_timer(&phba->fcp_poll_timer, | |
2838 | poll_tmo_expires); | |
2839 | } | |
2840 | ||
9bad7671 | 2841 | /** |
3621a710 | 2842 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
2843 | * @phba: The Hba for which this call is being executed. |
2844 | * | |
2845 | * This routine starts the fcp_poll_timer of @phba. | |
2846 | **/ | |
875fbdfe JSEC |
2847 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
2848 | { | |
2849 | lpfc_poll_rearm_timer(phba); | |
2850 | } | |
2851 | ||
9bad7671 | 2852 | /** |
3621a710 | 2853 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
2854 | * @ptr: Map to lpfc_hba data structure pointer. |
2855 | * | |
2856 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
2857 | * and FCP Ring interrupt is disable. | |
2858 | **/ | |
2859 | ||
875fbdfe JSEC |
2860 | void lpfc_poll_timeout(unsigned long ptr) |
2861 | { | |
2e0fef85 | 2862 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
2863 | |
2864 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
2865 | lpfc_sli_handle_fast_ring_event(phba, |
2866 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
2867 | ||
875fbdfe JSEC |
2868 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
2869 | lpfc_poll_rearm_timer(phba); | |
2870 | } | |
875fbdfe JSEC |
2871 | } |
2872 | ||
9bad7671 | 2873 | /** |
3621a710 | 2874 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
2875 | * @cmnd: Pointer to scsi_cmnd data structure. |
2876 | * @done: Pointer to done routine. | |
2877 | * | |
2878 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
2879 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
2880 | * The @done callback is invoked after driver finished processing the command. | |
2881 | * | |
2882 | * Return value : | |
2883 | * 0 - Success | |
2884 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
2885 | **/ | |
dea3101e JB |
2886 | static int |
2887 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
2888 | { | |
2e0fef85 JS |
2889 | struct Scsi_Host *shost = cmnd->device->host; |
2890 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2891 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2892 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1c6f4ef5 | 2893 | struct lpfc_nodelist *ndlp; |
0bd4ca25 | 2894 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 2895 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 2896 | int err; |
dea3101e | 2897 | |
19a7b4ae JSEC |
2898 | err = fc_remote_port_chkready(rport); |
2899 | if (err) { | |
2900 | cmnd->result = err; | |
dea3101e JB |
2901 | goto out_fail_command; |
2902 | } | |
1c6f4ef5 | 2903 | ndlp = rdata->pnode; |
dea3101e | 2904 | |
e2a0a9d6 JS |
2905 | if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
2906 | scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { | |
2907 | ||
6a9c52cf JS |
2908 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2909 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
2910 | " op:%02x str=%s without registering for" | |
2911 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
2912 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
2913 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2914 | goto out_fail_command; | |
2915 | } | |
2916 | ||
dea3101e | 2917 | /* |
19a7b4ae JSEC |
2918 | * Catch race where our node has transitioned, but the |
2919 | * transport is still transitioning. | |
dea3101e | 2920 | */ |
b522d7d4 JS |
2921 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
2922 | cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); | |
2923 | goto out_fail_command; | |
2924 | } | |
7dc517df | 2925 | if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) |
977b5a0a | 2926 | goto out_host_busy; |
a93ce024 | 2927 | |
ed957684 | 2928 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 2929 | if (lpfc_cmd == NULL) { |
eaf15d5b | 2930 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 2931 | |
e8b62011 JS |
2932 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2933 | "0707 driver's buffer pool is empty, " | |
2934 | "IO busied\n"); | |
dea3101e JB |
2935 | goto out_host_busy; |
2936 | } | |
2937 | ||
2938 | /* | |
2939 | * Store the midlayer's command structure for the completion phase | |
2940 | * and complete the command initialization. | |
2941 | */ | |
2942 | lpfc_cmd->pCmd = cmnd; | |
2943 | lpfc_cmd->rdata = rdata; | |
2944 | lpfc_cmd->timeout = 0; | |
977b5a0a | 2945 | lpfc_cmd->start_time = jiffies; |
dea3101e JB |
2946 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
2947 | cmnd->scsi_done = done; | |
2948 | ||
e2a0a9d6 | 2949 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf JS |
2950 | if (vport->phba->cfg_enable_bg) { |
2951 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 JS |
2952 | "9033 BLKGRD: rcvd protected cmd:%02x op:%02x " |
2953 | "str=%s\n", | |
2954 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2955 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
6a9c52cf | 2956 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
e2a0a9d6 | 2957 | "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x " |
e4e74273 | 2958 | "%02x %02x %02x %02x %02x\n", |
e2a0a9d6 JS |
2959 | cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], |
2960 | cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], | |
2961 | cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], | |
2962 | cmnd->cmnd[9]); | |
6a9c52cf JS |
2963 | if (cmnd->cmnd[0] == READ_10) |
2964 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2965 | "9035 BLKGRD: READ @ sector %llu, " |
83096ebf TH |
2966 | "count %u\n", |
2967 | (unsigned long long)scsi_get_lba(cmnd), | |
2968 | blk_rq_sectors(cmnd->request)); | |
6a9c52cf JS |
2969 | else if (cmnd->cmnd[0] == WRITE_10) |
2970 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2971 | "9036 BLKGRD: WRITE @ sector %llu, " |
83096ebf | 2972 | "count %u cmd=%p\n", |
87b5c328 | 2973 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 2974 | blk_rq_sectors(cmnd->request), |
e2a0a9d6 | 2975 | cmnd); |
6a9c52cf | 2976 | } |
e2a0a9d6 JS |
2977 | |
2978 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2979 | } else { | |
6a9c52cf | 2980 | if (vport->phba->cfg_enable_bg) { |
e2a0a9d6 | 2981 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
6a9c52cf JS |
2982 | "9038 BLKGRD: rcvd unprotected cmd:" |
2983 | "%02x op:%02x str=%s\n", | |
2984 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2985 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2986 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2987 | "9039 BLKGRD: CDB: %02x %02x %02x " | |
2988 | "%02x %02x %02x %02x %02x %02x %02x\n", | |
2989 | cmnd->cmnd[0], cmnd->cmnd[1], | |
2990 | cmnd->cmnd[2], cmnd->cmnd[3], | |
2991 | cmnd->cmnd[4], cmnd->cmnd[5], | |
2992 | cmnd->cmnd[6], cmnd->cmnd[7], | |
2993 | cmnd->cmnd[8], cmnd->cmnd[9]); | |
2994 | if (cmnd->cmnd[0] == READ_10) | |
2995 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2996 | "9040 dbg: READ @ sector %llu, " | |
2997 | "count %u\n", | |
2998 | (unsigned long long)scsi_get_lba(cmnd), | |
83096ebf | 2999 | blk_rq_sectors(cmnd->request)); |
6a9c52cf JS |
3000 | else if (cmnd->cmnd[0] == WRITE_10) |
3001 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 3002 | "9041 dbg: WRITE @ sector %llu, " |
83096ebf | 3003 | "count %u cmd=%p\n", |
87b5c328 | 3004 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 3005 | blk_rq_sectors(cmnd->request), cmnd); |
6a9c52cf JS |
3006 | else |
3007 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 3008 | "9042 dbg: parser not implemented\n"); |
6a9c52cf | 3009 | } |
e2a0a9d6 JS |
3010 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
3011 | } | |
3012 | ||
dea3101e JB |
3013 | if (err) |
3014 | goto out_host_busy_free_buf; | |
3015 | ||
2e0fef85 | 3016 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 3017 | |
977b5a0a | 3018 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 3019 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 3020 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
3021 | if (err) { |
3022 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 3023 | goto out_host_busy_free_buf; |
eaf15d5b | 3024 | } |
875fbdfe | 3025 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
3026 | spin_unlock(shost->host_lock); |
3027 | lpfc_sli_handle_fast_ring_event(phba, | |
3028 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
3029 | ||
3030 | spin_lock(shost->host_lock); | |
875fbdfe JSEC |
3031 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
3032 | lpfc_poll_rearm_timer(phba); | |
3033 | } | |
3034 | ||
dea3101e JB |
3035 | return 0; |
3036 | ||
3037 | out_host_busy_free_buf: | |
bcf4dbfa | 3038 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 3039 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
3040 | out_host_busy: |
3041 | return SCSI_MLQUEUE_HOST_BUSY; | |
3042 | ||
3043 | out_fail_command: | |
3044 | done(cmnd); | |
3045 | return 0; | |
3046 | } | |
3047 | ||
9bad7671 | 3048 | /** |
3621a710 | 3049 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
3050 | * @cmnd: Pointer to scsi_cmnd data structure. |
3051 | * | |
3052 | * This routine aborts @cmnd pending in base driver. | |
3053 | * | |
3054 | * Return code : | |
3055 | * 0x2003 - Error | |
3056 | * 0x2002 - Success | |
3057 | **/ | |
dea3101e | 3058 | static int |
63c59c3b | 3059 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 3060 | { |
2e0fef85 JS |
3061 | struct Scsi_Host *shost = cmnd->device->host; |
3062 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3063 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
3064 | struct lpfc_iocbq *iocb; |
3065 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 3066 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 3067 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 3068 | int ret = SUCCESS; |
fa61a54e | 3069 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 3070 | |
589a52d6 JS |
3071 | ret = fc_block_scsi_eh(cmnd); |
3072 | if (ret) | |
3073 | return ret; | |
0bd4ca25 JSEC |
3074 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
3075 | BUG_ON(!lpfc_cmd); | |
dea3101e | 3076 | |
0bd4ca25 JSEC |
3077 | /* |
3078 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
3079 | * points to a different SCSI command, then the driver has | |
3080 | * already completed this command, but the midlayer did not | |
3081 | * see the completion before the eh fired. Just return | |
3082 | * SUCCESS. | |
3083 | */ | |
3084 | iocb = &lpfc_cmd->cur_iocbq; | |
3085 | if (lpfc_cmd->pCmd != cmnd) | |
3086 | goto out; | |
dea3101e | 3087 | |
0bd4ca25 | 3088 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 3089 | |
0bd4ca25 JSEC |
3090 | abtsiocb = lpfc_sli_get_iocbq(phba); |
3091 | if (abtsiocb == NULL) { | |
3092 | ret = FAILED; | |
dea3101e JB |
3093 | goto out; |
3094 | } | |
3095 | ||
dea3101e | 3096 | /* |
0bd4ca25 JSEC |
3097 | * The scsi command can not be in txq and it is in flight because the |
3098 | * pCmd is still pointig at the SCSI command we have to abort. There | |
3099 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 3100 | */ |
dea3101e | 3101 | |
0bd4ca25 JSEC |
3102 | cmd = &iocb->iocb; |
3103 | icmd = &abtsiocb->iocb; | |
3104 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
3105 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
3106 | if (phba->sli_rev == LPFC_SLI_REV4) |
3107 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
3108 | else | |
3109 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 3110 | |
0bd4ca25 JSEC |
3111 | icmd->ulpLe = 1; |
3112 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
3113 | |
3114 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
3115 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
341af102 | 3116 | abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
5ffc266e | 3117 | |
2e0fef85 | 3118 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
3119 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
3120 | else | |
3121 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 3122 | |
0bd4ca25 | 3123 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 3124 | abtsiocb->vport = vport; |
3772a991 JS |
3125 | if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) == |
3126 | IOCB_ERROR) { | |
0bd4ca25 JSEC |
3127 | lpfc_sli_release_iocbq(phba, abtsiocb); |
3128 | ret = FAILED; | |
3129 | goto out; | |
3130 | } | |
dea3101e | 3131 | |
875fbdfe | 3132 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
3133 | lpfc_sli_handle_fast_ring_event(phba, |
3134 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 3135 | |
fa61a54e | 3136 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 3137 | /* Wait for abort to complete */ |
fa61a54e JS |
3138 | wait_event_timeout(waitq, |
3139 | (lpfc_cmd->pCmd != cmnd), | |
3140 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 3141 | |
fa61a54e JS |
3142 | spin_lock_irq(shost->host_lock); |
3143 | lpfc_cmd->waitq = NULL; | |
3144 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 3145 | |
0bd4ca25 JSEC |
3146 | if (lpfc_cmd->pCmd == cmnd) { |
3147 | ret = FAILED; | |
e8b62011 JS |
3148 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3149 | "0748 abort handler timed out waiting " | |
3150 | "for abort to complete: ret %#x, ID %d, " | |
3151 | "LUN %d, snum %#lx\n", | |
3152 | ret, cmnd->device->id, cmnd->device->lun, | |
3153 | cmnd->serial_number); | |
dea3101e JB |
3154 | } |
3155 | ||
3156 | out: | |
e8b62011 JS |
3157 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3158 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
3159 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
3160 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 3161 | return ret; |
8fa728a2 JG |
3162 | } |
3163 | ||
bbb9d180 JS |
3164 | static char * |
3165 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
3166 | { | |
3167 | switch (task_mgmt_cmd) { | |
3168 | case FCP_ABORT_TASK_SET: | |
3169 | return "ABORT_TASK_SET"; | |
3170 | case FCP_CLEAR_TASK_SET: | |
3171 | return "FCP_CLEAR_TASK_SET"; | |
3172 | case FCP_BUS_RESET: | |
3173 | return "FCP_BUS_RESET"; | |
3174 | case FCP_LUN_RESET: | |
3175 | return "FCP_LUN_RESET"; | |
3176 | case FCP_TARGET_RESET: | |
3177 | return "FCP_TARGET_RESET"; | |
3178 | case FCP_CLEAR_ACA: | |
3179 | return "FCP_CLEAR_ACA"; | |
3180 | case FCP_TERMINATE_TASK: | |
3181 | return "FCP_TERMINATE_TASK"; | |
3182 | default: | |
3183 | return "unknown"; | |
3184 | } | |
3185 | } | |
3186 | ||
9bad7671 | 3187 | /** |
bbb9d180 JS |
3188 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
3189 | * @vport: The virtual port for which this call is being executed. | |
3190 | * @rdata: Pointer to remote port local data | |
3191 | * @tgt_id: Target ID of remote device. | |
3192 | * @lun_id: Lun number for the TMF | |
3193 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 3194 | * |
bbb9d180 JS |
3195 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
3196 | * a remote port. | |
9bad7671 | 3197 | * |
bbb9d180 JS |
3198 | * Return Code: |
3199 | * 0x2003 - Error | |
3200 | * 0x2002 - Success. | |
9bad7671 | 3201 | **/ |
dea3101e | 3202 | static int |
bbb9d180 JS |
3203 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
3204 | unsigned tgt_id, unsigned int lun_id, | |
3205 | uint8_t task_mgmt_cmd) | |
dea3101e | 3206 | { |
2e0fef85 | 3207 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 3208 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
3209 | struct lpfc_iocbq *iocbq; |
3210 | struct lpfc_iocbq *iocbqrsp; | |
3211 | int ret; | |
915caaaf | 3212 | int status; |
dea3101e | 3213 | |
bbb9d180 | 3214 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
915caaaf | 3215 | return FAILED; |
bbb9d180 | 3216 | |
2e0fef85 | 3217 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 3218 | if (lpfc_cmd == NULL) |
915caaaf | 3219 | return FAILED; |
dea3101e | 3220 | lpfc_cmd->timeout = 60; |
0b18ac42 | 3221 | lpfc_cmd->rdata = rdata; |
dea3101e | 3222 | |
bbb9d180 JS |
3223 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
3224 | task_mgmt_cmd); | |
915caaaf JS |
3225 | if (!status) { |
3226 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3227 | return FAILED; | |
3228 | } | |
dea3101e | 3229 | |
bbb9d180 | 3230 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 3231 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
3232 | if (iocbqrsp == NULL) { |
3233 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3234 | return FAILED; | |
3235 | } | |
bbb9d180 | 3236 | |
e8b62011 | 3237 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
bbb9d180 JS |
3238 | "0702 Issue %s to TGT %d LUN %d " |
3239 | "rpi x%x nlp_flag x%x\n", | |
3240 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, | |
3241 | rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
3242 | ||
3772a991 | 3243 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 3244 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
bbb9d180 JS |
3245 | if (status != IOCB_SUCCESS) { |
3246 | if (status == IOCB_TIMEDOUT) { | |
3247 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
3248 | ret = TIMEOUT_ERROR; | |
3249 | } else | |
915caaaf | 3250 | ret = FAILED; |
bbb9d180 JS |
3251 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
3252 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3253 | "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n", | |
3254 | lpfc_taskmgmt_name(task_mgmt_cmd), | |
3255 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
915caaaf | 3256 | iocbqrsp->iocb.un.ulpWord[4]); |
2a9bf3d0 JS |
3257 | } else if (status == IOCB_BUSY) |
3258 | ret = FAILED; | |
3259 | else | |
bbb9d180 JS |
3260 | ret = SUCCESS; |
3261 | ||
6175c02a | 3262 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
3263 | |
3264 | if (ret != TIMEOUT_ERROR) | |
3265 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3266 | ||
3267 | return ret; | |
3268 | } | |
3269 | ||
3270 | /** | |
3271 | * lpfc_chk_tgt_mapped - | |
3272 | * @vport: The virtual port to check on | |
3273 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3274 | * | |
3275 | * This routine delays until the scsi target (aka rport) for the | |
3276 | * command exists (is present and logged in) or we declare it non-existent. | |
3277 | * | |
3278 | * Return code : | |
3279 | * 0x2003 - Error | |
3280 | * 0x2002 - Success | |
3281 | **/ | |
3282 | static int | |
3283 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
3284 | { | |
3285 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3286 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3287 | unsigned long later; |
3288 | ||
1c6f4ef5 JS |
3289 | if (!rdata) { |
3290 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
3291 | "0797 Tgt Map rport failure: rdata x%p\n", rdata); | |
3292 | return FAILED; | |
3293 | } | |
3294 | pnode = rdata->pnode; | |
bbb9d180 JS |
3295 | /* |
3296 | * If target is not in a MAPPED state, delay until | |
3297 | * target is rediscovered or devloss timeout expires. | |
3298 | */ | |
3299 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
3300 | while (time_after(later, jiffies)) { | |
3301 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
3302 | return FAILED; | |
3303 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
3304 | return SUCCESS; | |
3305 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
3306 | rdata = cmnd->device->hostdata; | |
3307 | if (!rdata) | |
3308 | return FAILED; | |
3309 | pnode = rdata->pnode; | |
3310 | } | |
3311 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
3312 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
3313 | return FAILED; | |
3314 | return SUCCESS; | |
3315 | } | |
3316 | ||
3317 | /** | |
3318 | * lpfc_reset_flush_io_context - | |
3319 | * @vport: The virtual port (scsi_host) for the flush context | |
3320 | * @tgt_id: If aborting by Target contect - specifies the target id | |
3321 | * @lun_id: If aborting by Lun context - specifies the lun id | |
3322 | * @context: specifies the context level to flush at. | |
3323 | * | |
3324 | * After a reset condition via TMF, we need to flush orphaned i/o | |
3325 | * contexts from the adapter. This routine aborts any contexts | |
3326 | * outstanding, then waits for their completions. The wait is | |
3327 | * bounded by devloss_tmo though. | |
3328 | * | |
3329 | * Return code : | |
3330 | * 0x2003 - Error | |
3331 | * 0x2002 - Success | |
3332 | **/ | |
3333 | static int | |
3334 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
3335 | uint64_t lun_id, lpfc_ctx_cmd context) | |
3336 | { | |
3337 | struct lpfc_hba *phba = vport->phba; | |
3338 | unsigned long later; | |
3339 | int cnt; | |
3340 | ||
3341 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 3342 | if (cnt) |
51ef4c26 | 3343 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
bbb9d180 | 3344 | tgt_id, lun_id, context); |
915caaaf JS |
3345 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
3346 | while (time_after(later, jiffies) && cnt) { | |
3347 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 3348 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 3349 | } |
dea3101e | 3350 | if (cnt) { |
e8b62011 | 3351 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
3352 | "0724 I/O flush failure for context %s : cnt x%x\n", |
3353 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
3354 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
3355 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
3356 | cnt); | |
3357 | return FAILED; | |
dea3101e | 3358 | } |
bbb9d180 JS |
3359 | return SUCCESS; |
3360 | } | |
3361 | ||
3362 | /** | |
3363 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
3364 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3365 | * | |
3366 | * This routine does a device reset by sending a LUN_RESET task management | |
3367 | * command. | |
3368 | * | |
3369 | * Return code : | |
3370 | * 0x2003 - Error | |
3371 | * 0x2002 - Success | |
3372 | **/ | |
3373 | static int | |
3374 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
3375 | { | |
3376 | struct Scsi_Host *shost = cmnd->device->host; | |
3377 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3378 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3379 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3380 | unsigned tgt_id = cmnd->device->id; |
3381 | unsigned int lun_id = cmnd->device->lun; | |
3382 | struct lpfc_scsi_event_header scsi_event; | |
3383 | int status; | |
3384 | ||
1c6f4ef5 JS |
3385 | if (!rdata) { |
3386 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3387 | "0798 Device Reset rport failure: rdata x%p\n", rdata); | |
3388 | return FAILED; | |
3389 | } | |
3390 | pnode = rdata->pnode; | |
589a52d6 JS |
3391 | status = fc_block_scsi_eh(cmnd); |
3392 | if (status) | |
3393 | return status; | |
bbb9d180 JS |
3394 | |
3395 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3396 | if (status == FAILED) { | |
3397 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3398 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
3399 | return FAILED; | |
3400 | } | |
3401 | ||
3402 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3403 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
3404 | scsi_event.lun = lun_id; | |
3405 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3406 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3407 | ||
3408 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3409 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3410 | ||
3411 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3412 | FCP_LUN_RESET); | |
3413 | ||
3414 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3415 | "0713 SCSI layer issued Device Reset (%d, %d) " | |
3416 | "return x%x\n", tgt_id, lun_id, status); | |
3417 | ||
3418 | /* | |
3419 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3420 | * or if the TMF failed, they may be in an indeterminate state. | |
3421 | * So, continue on. | |
3422 | * We will report success if all the i/o aborts successfully. | |
3423 | */ | |
3424 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3425 | LPFC_CTX_LUN); | |
3426 | return status; | |
3427 | } | |
3428 | ||
3429 | /** | |
3430 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
3431 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3432 | * | |
3433 | * This routine does a target reset by sending a TARGET_RESET task management | |
3434 | * command. | |
3435 | * | |
3436 | * Return code : | |
3437 | * 0x2003 - Error | |
3438 | * 0x2002 - Success | |
3439 | **/ | |
3440 | static int | |
3441 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
3442 | { | |
3443 | struct Scsi_Host *shost = cmnd->device->host; | |
3444 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3445 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3446 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3447 | unsigned tgt_id = cmnd->device->id; |
3448 | unsigned int lun_id = cmnd->device->lun; | |
3449 | struct lpfc_scsi_event_header scsi_event; | |
3450 | int status; | |
3451 | ||
1c6f4ef5 JS |
3452 | if (!rdata) { |
3453 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3454 | "0799 Target Reset rport failure: rdata x%p\n", rdata); | |
3455 | return FAILED; | |
3456 | } | |
3457 | pnode = rdata->pnode; | |
589a52d6 JS |
3458 | status = fc_block_scsi_eh(cmnd); |
3459 | if (status) | |
3460 | return status; | |
bbb9d180 JS |
3461 | |
3462 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3463 | if (status == FAILED) { | |
3464 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3465 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
3466 | return FAILED; | |
3467 | } | |
3468 | ||
3469 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3470 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
3471 | scsi_event.lun = 0; | |
3472 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3473 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3474 | ||
3475 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3476 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3477 | ||
3478 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3479 | FCP_TARGET_RESET); | |
3480 | ||
3481 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3482 | "0723 SCSI layer issued Target Reset (%d, %d) " | |
3483 | "return x%x\n", tgt_id, lun_id, status); | |
3484 | ||
3485 | /* | |
3486 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3487 | * or if the TMF failed, they may be in an indeterminate state. | |
3488 | * So, continue on. | |
3489 | * We will report success if all the i/o aborts successfully. | |
3490 | */ | |
3491 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3492 | LPFC_CTX_TGT); | |
3493 | return status; | |
dea3101e JB |
3494 | } |
3495 | ||
9bad7671 | 3496 | /** |
3621a710 | 3497 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
3498 | * @cmnd: Pointer to scsi_cmnd data structure. |
3499 | * | |
bbb9d180 JS |
3500 | * This routine does target reset to all targets on @cmnd->device->host. |
3501 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 3502 | * |
bbb9d180 JS |
3503 | * Return code : |
3504 | * 0x2003 - Error | |
3505 | * 0x2002 - Success | |
9bad7671 | 3506 | **/ |
94d0e7b8 | 3507 | static int |
7054a606 | 3508 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 3509 | { |
2e0fef85 JS |
3510 | struct Scsi_Host *shost = cmnd->device->host; |
3511 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 3512 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 3513 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
3514 | int match; |
3515 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
3516 | |
3517 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3518 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
3519 | scsi_event.lun = 0; | |
3520 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
3521 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
3522 | ||
bbb9d180 JS |
3523 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
3524 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 3525 | |
589a52d6 JS |
3526 | ret = fc_block_scsi_eh(cmnd); |
3527 | if (ret) | |
3528 | return ret; | |
bbb9d180 | 3529 | |
dea3101e JB |
3530 | /* |
3531 | * Since the driver manages a single bus device, reset all | |
3532 | * targets known to the driver. Should any target reset | |
3533 | * fail, this routine returns failure to the midlayer. | |
3534 | */ | |
e17da18e | 3535 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 3536 | /* Search for mapped node by target ID */ |
dea3101e | 3537 | match = 0; |
2e0fef85 JS |
3538 | spin_lock_irq(shost->host_lock); |
3539 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
3540 | if (!NLP_CHK_NODE_ACT(ndlp)) |
3541 | continue; | |
685f0bf7 | 3542 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 3543 | ndlp->nlp_sid == i && |
685f0bf7 | 3544 | ndlp->rport) { |
dea3101e JB |
3545 | match = 1; |
3546 | break; | |
3547 | } | |
3548 | } | |
2e0fef85 | 3549 | spin_unlock_irq(shost->host_lock); |
dea3101e JB |
3550 | if (!match) |
3551 | continue; | |
bbb9d180 JS |
3552 | |
3553 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
3554 | i, 0, FCP_TARGET_RESET); | |
3555 | ||
3556 | if (status != SUCCESS) { | |
e8b62011 JS |
3557 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3558 | "0700 Bus Reset on target %d failed\n", | |
3559 | i); | |
915caaaf | 3560 | ret = FAILED; |
dea3101e JB |
3561 | } |
3562 | } | |
6175c02a | 3563 | /* |
bbb9d180 JS |
3564 | * We have to clean up i/o as : they may be orphaned by the TMFs |
3565 | * above; or if any of the TMFs failed, they may be in an | |
3566 | * indeterminate state. | |
3567 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 3568 | */ |
bbb9d180 JS |
3569 | |
3570 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
3571 | if (status != SUCCESS) | |
0bd4ca25 | 3572 | ret = FAILED; |
bbb9d180 | 3573 | |
e8b62011 JS |
3574 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3575 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e JB |
3576 | return ret; |
3577 | } | |
3578 | ||
9bad7671 | 3579 | /** |
3621a710 | 3580 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
3581 | * @sdev: Pointer to scsi_device. |
3582 | * | |
3583 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
3584 | * globally available list of scsi buffers. This routine also makes sure scsi | |
3585 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
3586 | * of scsi buffer exists for the lifetime of the driver. | |
3587 | * | |
3588 | * Return codes: | |
3589 | * non-0 - Error | |
3590 | * 0 - Success | |
3591 | **/ | |
dea3101e JB |
3592 | static int |
3593 | lpfc_slave_alloc(struct scsi_device *sdev) | |
3594 | { | |
2e0fef85 JS |
3595 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3596 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 3597 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 3598 | uint32_t total = 0; |
dea3101e | 3599 | uint32_t num_to_alloc = 0; |
3772a991 | 3600 | int num_allocated = 0; |
d7c47992 | 3601 | uint32_t sdev_cnt; |
dea3101e | 3602 | |
19a7b4ae | 3603 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e JB |
3604 | return -ENXIO; |
3605 | ||
19a7b4ae | 3606 | sdev->hostdata = rport->dd_data; |
d7c47992 | 3607 | sdev_cnt = atomic_inc_return(&phba->sdev_cnt); |
dea3101e JB |
3608 | |
3609 | /* | |
3610 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
3611 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
3612 | * HBA limit conveyed to the midlayer via the host structure. The |
3613 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
3614 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e JB |
3615 | */ |
3616 | total = phba->total_scsi_bufs; | |
3de2a653 | 3617 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 | 3618 | |
d7c47992 JS |
3619 | /* If allocated buffers are enough do nothing */ |
3620 | if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) | |
3621 | return 0; | |
3622 | ||
92d7f7b0 JS |
3623 | /* Allow some exchanges to be available always to complete discovery */ |
3624 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3625 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3626 | "0704 At limitation of %d preallocated " | |
3627 | "command buffers\n", total); | |
dea3101e | 3628 | return 0; |
92d7f7b0 JS |
3629 | /* Allow some exchanges to be available always to complete discovery */ |
3630 | } else if (total + num_to_alloc > | |
3631 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3632 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3633 | "0705 Allocation request of %d " | |
3634 | "command buffers will exceed max of %d. " | |
3635 | "Reducing allocation request to %d.\n", | |
3636 | num_to_alloc, phba->cfg_hba_queue_depth, | |
3637 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e JB |
3638 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
3639 | } | |
3772a991 JS |
3640 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
3641 | if (num_to_alloc != num_allocated) { | |
3642 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
3643 | "0708 Allocation request of %d " | |
3644 | "command buffers did not succeed. " | |
3645 | "Allocated %d buffers.\n", | |
3646 | num_to_alloc, num_allocated); | |
dea3101e | 3647 | } |
1c6f4ef5 JS |
3648 | if (num_allocated > 0) |
3649 | phba->total_scsi_bufs += num_allocated; | |
dea3101e JB |
3650 | return 0; |
3651 | } | |
3652 | ||
9bad7671 | 3653 | /** |
3621a710 | 3654 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
3655 | * @sdev: Pointer to scsi_device. |
3656 | * | |
3657 | * This routine configures following items | |
3658 | * - Tag command queuing support for @sdev if supported. | |
9bad7671 JS |
3659 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. |
3660 | * | |
3661 | * Return codes: | |
3662 | * 0 - Success | |
3663 | **/ | |
dea3101e JB |
3664 | static int |
3665 | lpfc_slave_configure(struct scsi_device *sdev) | |
3666 | { | |
2e0fef85 JS |
3667 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3668 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
3669 | |
3670 | if (sdev->tagged_supported) | |
3de2a653 | 3671 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 3672 | else |
3de2a653 | 3673 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 3674 | |
875fbdfe | 3675 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
3676 | lpfc_sli_handle_fast_ring_event(phba, |
3677 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
3678 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
3679 | lpfc_poll_rearm_timer(phba); | |
3680 | } | |
3681 | ||
dea3101e JB |
3682 | return 0; |
3683 | } | |
3684 | ||
9bad7671 | 3685 | /** |
3621a710 | 3686 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
3687 | * @sdev: Pointer to scsi_device. |
3688 | * | |
3689 | * This routine sets @sdev hostatdata filed to null. | |
3690 | **/ | |
dea3101e JB |
3691 | static void |
3692 | lpfc_slave_destroy(struct scsi_device *sdev) | |
3693 | { | |
d7c47992 JS |
3694 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3695 | struct lpfc_hba *phba = vport->phba; | |
3696 | atomic_dec(&phba->sdev_cnt); | |
dea3101e JB |
3697 | sdev->hostdata = NULL; |
3698 | return; | |
3699 | } | |
3700 | ||
92d7f7b0 | 3701 | |
dea3101e JB |
3702 | struct scsi_host_template lpfc_template = { |
3703 | .module = THIS_MODULE, | |
3704 | .name = LPFC_DRIVER_NAME, | |
3705 | .info = lpfc_info, | |
3706 | .queuecommand = lpfc_queuecommand, | |
3707 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
3708 | .eh_device_reset_handler = lpfc_device_reset_handler, |
3709 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 3710 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
dea3101e JB |
3711 | .slave_alloc = lpfc_slave_alloc, |
3712 | .slave_configure = lpfc_slave_configure, | |
3713 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 3714 | .scan_finished = lpfc_scan_finished, |
dea3101e | 3715 | .this_id = -1, |
83108bd3 | 3716 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e JB |
3717 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
3718 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 3719 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 3720 | .max_sectors = 0xFFFF, |
f1c3b0fc | 3721 | .vendor_id = LPFC_NL_VENDOR_ID, |
5ffc266e | 3722 | .change_queue_depth = lpfc_change_queue_depth, |
dea3101e | 3723 | }; |
3de2a653 JS |
3724 | |
3725 | struct scsi_host_template lpfc_vport_template = { | |
3726 | .module = THIS_MODULE, | |
3727 | .name = LPFC_DRIVER_NAME, | |
3728 | .info = lpfc_info, | |
3729 | .queuecommand = lpfc_queuecommand, | |
3730 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
3731 | .eh_device_reset_handler = lpfc_device_reset_handler, |
3732 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
3733 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
3734 | .slave_alloc = lpfc_slave_alloc, | |
3735 | .slave_configure = lpfc_slave_configure, | |
3736 | .slave_destroy = lpfc_slave_destroy, | |
3737 | .scan_finished = lpfc_scan_finished, | |
3738 | .this_id = -1, | |
83108bd3 | 3739 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
3740 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
3741 | .use_clustering = ENABLE_CLUSTERING, | |
3742 | .shost_attrs = lpfc_vport_attrs, | |
3743 | .max_sectors = 0xFFFF, | |
5ffc266e | 3744 | .change_queue_depth = lpfc_change_queue_depth, |
3de2a653 | 3745 | }; |