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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 JB |
21 | #include <linux/pci.h> |
22 | #include <linux/interrupt.h> | |
a90f5684 | 23 | #include <linux/delay.h> |
e2a0a9d6 | 24 | #include <asm/unaligned.h> |
dea3101e JB |
25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 28 | #include <scsi/scsi_eh.h> |
dea3101e JB |
29 | #include <scsi/scsi_host.h> |
30 | #include <scsi/scsi_tcq.h> | |
31 | #include <scsi/scsi_transport_fc.h> | |
32 | ||
33 | #include "lpfc_version.h" | |
da0436e9 | 34 | #include "lpfc_hw4.h" |
dea3101e JB |
35 | #include "lpfc_hw.h" |
36 | #include "lpfc_sli.h" | |
da0436e9 | 37 | #include "lpfc_sli4.h" |
ea2151b4 | 38 | #include "lpfc_nl.h" |
dea3101e JB |
39 | #include "lpfc_disc.h" |
40 | #include "lpfc_scsi.h" | |
41 | #include "lpfc.h" | |
42 | #include "lpfc_logmsg.h" | |
43 | #include "lpfc_crtn.h" | |
92d7f7b0 | 44 | #include "lpfc_vport.h" |
dea3101e JB |
45 | |
46 | #define LPFC_RESET_WAIT 2 | |
47 | #define LPFC_ABORT_WAIT 2 | |
48 | ||
e2a0a9d6 JS |
49 | int _dump_buf_done; |
50 | ||
51 | static char *dif_op_str[] = { | |
52 | "SCSI_PROT_NORMAL", | |
53 | "SCSI_PROT_READ_INSERT", | |
54 | "SCSI_PROT_WRITE_STRIP", | |
55 | "SCSI_PROT_READ_STRIP", | |
56 | "SCSI_PROT_WRITE_INSERT", | |
57 | "SCSI_PROT_READ_PASS", | |
58 | "SCSI_PROT_WRITE_PASS", | |
e2a0a9d6 | 59 | }; |
da0436e9 JS |
60 | static void |
61 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
1c6f4ef5 JS |
62 | static void |
63 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
e2a0a9d6 JS |
64 | |
65 | static void | |
6a9c52cf | 66 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
67 | { |
68 | void *src, *dst; | |
69 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
70 | ||
71 | if (!_dump_buf_data) { | |
6a9c52cf JS |
72 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
73 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
74 | __func__); |
75 | return; | |
76 | } | |
77 | ||
78 | ||
79 | if (!sgde) { | |
6a9c52cf JS |
80 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
81 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
82 | return; |
83 | } | |
84 | ||
85 | dst = (void *) _dump_buf_data; | |
86 | while (sgde) { | |
87 | src = sg_virt(sgde); | |
88 | memcpy(dst, src, sgde->length); | |
89 | dst += sgde->length; | |
90 | sgde = sg_next(sgde); | |
91 | } | |
92 | } | |
93 | ||
94 | static void | |
6a9c52cf | 95 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
96 | { |
97 | void *src, *dst; | |
98 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
99 | ||
100 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
101 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
102 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
103 | __func__); |
104 | return; | |
105 | } | |
106 | ||
107 | if (!sgde) { | |
6a9c52cf JS |
108 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
109 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
110 | return; |
111 | } | |
112 | ||
113 | dst = _dump_buf_dif; | |
114 | while (sgde) { | |
115 | src = sg_virt(sgde); | |
116 | memcpy(dst, src, sgde->length); | |
117 | dst += sgde->length; | |
118 | sgde = sg_next(sgde); | |
119 | } | |
120 | } | |
121 | ||
f1126688 JS |
122 | /** |
123 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
124 | * @phba: Pointer to HBA object. | |
125 | * @lpfc_cmd: lpfc scsi command object pointer. | |
126 | * | |
127 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
128 | * set the last bit in the response sge entry. | |
129 | **/ | |
130 | static void | |
131 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
132 | struct lpfc_scsi_buf *lpfc_cmd) | |
133 | { | |
134 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
135 | if (sgl) { | |
136 | sgl += 1; | |
137 | sgl->word2 = le32_to_cpu(sgl->word2); | |
138 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
139 | sgl->word2 = cpu_to_le32(sgl->word2); | |
140 | } | |
141 | } | |
142 | ||
ea2151b4 | 143 | /** |
3621a710 | 144 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
145 | * @phba: Pointer to HBA object. |
146 | * @lpfc_cmd: lpfc scsi command object pointer. | |
147 | * | |
148 | * This function is called when there is a command completion and this | |
149 | * function updates the statistical data for the command completion. | |
150 | **/ | |
151 | static void | |
152 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
153 | { | |
154 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
155 | struct lpfc_nodelist *pnode = rdata->pnode; | |
156 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
157 | unsigned long flags; | |
158 | struct Scsi_Host *shost = cmd->device->host; | |
159 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
160 | unsigned long latency; | |
161 | int i; | |
162 | ||
163 | if (cmd->result) | |
164 | return; | |
165 | ||
9f1e1b50 JS |
166 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
167 | ||
ea2151b4 JS |
168 | spin_lock_irqsave(shost->host_lock, flags); |
169 | if (!vport->stat_data_enabled || | |
170 | vport->stat_data_blocked || | |
171 | !pnode->lat_data || | |
172 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
173 | spin_unlock_irqrestore(shost->host_lock, flags); | |
174 | return; | |
175 | } | |
ea2151b4 JS |
176 | |
177 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
178 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
179 | phba->bucket_step; | |
9f1e1b50 JS |
180 | /* check array subscript bounds */ |
181 | if (i < 0) | |
182 | i = 0; | |
183 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
184 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
185 | } else { |
186 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
187 | if (latency <= (phba->bucket_base + | |
188 | ((1<<i)*phba->bucket_step))) | |
189 | break; | |
190 | } | |
191 | ||
192 | pnode->lat_data[i].cmd_count++; | |
193 | spin_unlock_irqrestore(shost->host_lock, flags); | |
194 | } | |
195 | ||
ea2151b4 | 196 | /** |
3621a710 | 197 | * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event |
ea2151b4 JS |
198 | * @phba: Pointer to HBA context object. |
199 | * @vport: Pointer to vport object. | |
200 | * @ndlp: Pointer to FC node associated with the target. | |
201 | * @lun: Lun number of the scsi device. | |
202 | * @old_val: Old value of the queue depth. | |
203 | * @new_val: New value of the queue depth. | |
204 | * | |
205 | * This function sends an event to the mgmt application indicating | |
206 | * there is a change in the scsi device queue depth. | |
207 | **/ | |
208 | static void | |
209 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
210 | struct lpfc_vport *vport, | |
211 | struct lpfc_nodelist *ndlp, | |
212 | uint32_t lun, | |
213 | uint32_t old_val, | |
214 | uint32_t new_val) | |
215 | { | |
216 | struct lpfc_fast_path_event *fast_path_evt; | |
217 | unsigned long flags; | |
218 | ||
219 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
220 | if (!fast_path_evt) | |
221 | return; | |
222 | ||
223 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
224 | FC_REG_SCSI_EVENT; | |
225 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
226 | LPFC_EVENT_VARQUEDEPTH; | |
227 | ||
228 | /* Report all luns with change in queue depth */ | |
229 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
230 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
231 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
232 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
233 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
234 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
235 | } | |
236 | ||
237 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
238 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
239 | fast_path_evt->vport = vport; | |
240 | ||
241 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
242 | spin_lock_irqsave(&phba->hbalock, flags); | |
243 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
244 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
245 | lpfc_worker_wake_up(phba); | |
246 | ||
247 | return; | |
248 | } | |
249 | ||
5ffc266e JS |
250 | /** |
251 | * lpfc_change_queue_depth - Alter scsi device queue depth | |
252 | * @sdev: Pointer the scsi device on which to change the queue depth. | |
253 | * @qdepth: New queue depth to set the sdev to. | |
254 | * @reason: The reason for the queue depth change. | |
255 | * | |
256 | * This function is called by the midlayer and the LLD to alter the queue | |
257 | * depth for a scsi device. This function sets the queue depth to the new | |
258 | * value and sends an event out to log the queue depth change. | |
259 | **/ | |
260 | int | |
261 | lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) | |
262 | { | |
263 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; | |
264 | struct lpfc_hba *phba = vport->phba; | |
265 | struct lpfc_rport_data *rdata; | |
266 | unsigned long new_queue_depth, old_queue_depth; | |
267 | ||
268 | old_queue_depth = sdev->queue_depth; | |
269 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
270 | new_queue_depth = sdev->queue_depth; | |
271 | rdata = sdev->hostdata; | |
272 | if (rdata) | |
273 | lpfc_send_sdev_queuedepth_change_event(phba, vport, | |
274 | rdata->pnode, sdev->lun, | |
275 | old_queue_depth, | |
276 | new_queue_depth); | |
277 | return sdev->queue_depth; | |
278 | } | |
279 | ||
9bad7671 | 280 | /** |
3621a710 | 281 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
282 | * @phba: The Hba for which this call is being executed. |
283 | * | |
284 | * This routine is called when there is resource error in driver or firmware. | |
285 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
286 | * posts at most 1 event each second. This routine wakes up worker thread of | |
287 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
288 | * | |
289 | * This routine should be called with no lock held. | |
290 | **/ | |
92d7f7b0 | 291 | void |
eaf15d5b | 292 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
293 | { |
294 | unsigned long flags; | |
5e9d9b82 | 295 | uint32_t evt_posted; |
92d7f7b0 JS |
296 | |
297 | spin_lock_irqsave(&phba->hbalock, flags); | |
298 | atomic_inc(&phba->num_rsrc_err); | |
299 | phba->last_rsrc_error_time = jiffies; | |
300 | ||
301 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
302 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
303 | return; | |
304 | } | |
305 | ||
306 | phba->last_ramp_down_time = jiffies; | |
307 | ||
308 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
309 | ||
310 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
311 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
312 | if (!evt_posted) | |
92d7f7b0 | 313 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
314 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
315 | ||
5e9d9b82 JS |
316 | if (!evt_posted) |
317 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
318 | return; |
319 | } | |
320 | ||
9bad7671 | 321 | /** |
3621a710 | 322 | * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread |
9bad7671 JS |
323 | * @phba: The Hba for which this call is being executed. |
324 | * | |
325 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
326 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
327 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
328 | * to process WORKER_RAM_DOWN_EVENT event. | |
329 | * | |
330 | * This routine should be called with no lock held. | |
331 | **/ | |
92d7f7b0 | 332 | static inline void |
3de2a653 | 333 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
a257bf90 | 334 | uint32_t queue_depth) |
92d7f7b0 JS |
335 | { |
336 | unsigned long flags; | |
3de2a653 | 337 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 338 | uint32_t evt_posted; |
92d7f7b0 JS |
339 | atomic_inc(&phba->num_cmd_success); |
340 | ||
a257bf90 | 341 | if (vport->cfg_lun_queue_depth <= queue_depth) |
92d7f7b0 | 342 | return; |
92d7f7b0 | 343 | spin_lock_irqsave(&phba->hbalock, flags); |
5ffc266e JS |
344 | if (time_before(jiffies, |
345 | phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) || | |
346 | time_before(jiffies, | |
347 | phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) { | |
92d7f7b0 JS |
348 | spin_unlock_irqrestore(&phba->hbalock, flags); |
349 | return; | |
350 | } | |
92d7f7b0 JS |
351 | phba->last_ramp_up_time = jiffies; |
352 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
353 | ||
354 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
355 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
356 | if (!evt_posted) | |
92d7f7b0 | 357 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
358 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
359 | ||
5e9d9b82 JS |
360 | if (!evt_posted) |
361 | lpfc_worker_wake_up(phba); | |
362 | return; | |
92d7f7b0 JS |
363 | } |
364 | ||
9bad7671 | 365 | /** |
3621a710 | 366 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
367 | * @phba: The Hba for which this call is being executed. |
368 | * | |
369 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
370 | * thread.This routine reduces queue depth for all scsi device on each vport | |
371 | * associated with @phba. | |
372 | **/ | |
92d7f7b0 JS |
373 | void |
374 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
375 | { | |
549e55cd JS |
376 | struct lpfc_vport **vports; |
377 | struct Scsi_Host *shost; | |
92d7f7b0 | 378 | struct scsi_device *sdev; |
5ffc266e | 379 | unsigned long new_queue_depth; |
92d7f7b0 | 380 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 381 | int i; |
92d7f7b0 JS |
382 | |
383 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
384 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
385 | ||
549e55cd JS |
386 | vports = lpfc_create_vport_work_array(phba); |
387 | if (vports != NULL) | |
21e9a0a5 | 388 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
389 | shost = lpfc_shost_from_vport(vports[i]); |
390 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 391 | new_queue_depth = |
549e55cd JS |
392 | sdev->queue_depth * num_rsrc_err / |
393 | (num_rsrc_err + num_cmd_success); | |
394 | if (!new_queue_depth) | |
395 | new_queue_depth = sdev->queue_depth - 1; | |
396 | else | |
397 | new_queue_depth = sdev->queue_depth - | |
398 | new_queue_depth; | |
5ffc266e JS |
399 | lpfc_change_queue_depth(sdev, new_queue_depth, |
400 | SCSI_QDEPTH_DEFAULT); | |
549e55cd | 401 | } |
92d7f7b0 | 402 | } |
09372820 | 403 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
404 | atomic_set(&phba->num_rsrc_err, 0); |
405 | atomic_set(&phba->num_cmd_success, 0); | |
406 | } | |
407 | ||
9bad7671 | 408 | /** |
3621a710 | 409 | * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler |
9bad7671 JS |
410 | * @phba: The Hba for which this call is being executed. |
411 | * | |
412 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
413 | * thread.This routine increases queue depth for all scsi device on each vport | |
414 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
415 | * num_cmd_success to zero. | |
416 | **/ | |
92d7f7b0 JS |
417 | void |
418 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
419 | { | |
549e55cd JS |
420 | struct lpfc_vport **vports; |
421 | struct Scsi_Host *shost; | |
92d7f7b0 | 422 | struct scsi_device *sdev; |
549e55cd JS |
423 | int i; |
424 | ||
425 | vports = lpfc_create_vport_work_array(phba); | |
426 | if (vports != NULL) | |
21e9a0a5 | 427 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
428 | shost = lpfc_shost_from_vport(vports[i]); |
429 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
430 | if (vports[i]->cfg_lun_queue_depth <= |
431 | sdev->queue_depth) | |
432 | continue; | |
5ffc266e JS |
433 | lpfc_change_queue_depth(sdev, |
434 | sdev->queue_depth+1, | |
435 | SCSI_QDEPTH_RAMP_UP); | |
549e55cd | 436 | } |
92d7f7b0 | 437 | } |
09372820 | 438 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
439 | atomic_set(&phba->num_rsrc_err, 0); |
440 | atomic_set(&phba->num_cmd_success, 0); | |
441 | } | |
442 | ||
a8e497d5 | 443 | /** |
3621a710 | 444 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
445 | * @phba: Pointer to HBA context object. |
446 | * | |
447 | * This function walks vport list and set each SCSI host to block state | |
448 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
449 | * with EEH when device's PCI slot has been permanently disabled. | |
450 | **/ | |
451 | void | |
452 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
453 | { | |
454 | struct lpfc_vport **vports; | |
455 | struct Scsi_Host *shost; | |
456 | struct scsi_device *sdev; | |
457 | struct fc_rport *rport; | |
458 | int i; | |
459 | ||
460 | vports = lpfc_create_vport_work_array(phba); | |
461 | if (vports != NULL) | |
21e9a0a5 | 462 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
463 | shost = lpfc_shost_from_vport(vports[i]); |
464 | shost_for_each_device(sdev, shost) { | |
465 | rport = starget_to_rport(scsi_target(sdev)); | |
466 | fc_remote_port_delete(rport); | |
467 | } | |
468 | } | |
469 | lpfc_destroy_vport_work_array(phba, vports); | |
470 | } | |
471 | ||
9bad7671 | 472 | /** |
3772a991 | 473 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 474 | * @vport: The virtual port for which this call being executed. |
3772a991 | 475 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 476 | * |
3772a991 JS |
477 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
478 | * the scsi buffer contains all the necessary information needed to initiate | |
479 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
480 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
481 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
482 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
483 | * |
484 | * Return codes: | |
3772a991 JS |
485 | * int - number of scsi buffers that were allocated. |
486 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 487 | **/ |
3772a991 JS |
488 | static int |
489 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 490 | { |
2e0fef85 | 491 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
492 | struct lpfc_scsi_buf *psb; |
493 | struct ulp_bde64 *bpl; | |
494 | IOCB_t *iocb; | |
34b02dcd JS |
495 | dma_addr_t pdma_phys_fcp_cmd; |
496 | dma_addr_t pdma_phys_fcp_rsp; | |
497 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 498 | uint16_t iotag; |
3772a991 | 499 | int bcnt; |
dea3101e | 500 | |
3772a991 JS |
501 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
502 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
503 | if (!psb) | |
504 | break; | |
dea3101e | 505 | |
3772a991 JS |
506 | /* |
507 | * Get memory from the pci pool to map the virt space to pci | |
508 | * bus space for an I/O. The DMA buffer includes space for the | |
509 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
510 | * necessary to support the sg_tablesize. | |
511 | */ | |
512 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
513 | GFP_KERNEL, &psb->dma_handle); | |
514 | if (!psb->data) { | |
515 | kfree(psb); | |
516 | break; | |
517 | } | |
518 | ||
519 | /* Initialize virtual ptrs to dma_buf region. */ | |
520 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
521 | ||
522 | /* Allocate iotag for psb->cur_iocbq. */ | |
523 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
524 | if (iotag == 0) { | |
525 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
526 | psb->data, psb->dma_handle); | |
527 | kfree(psb); | |
528 | break; | |
529 | } | |
530 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
531 | ||
532 | psb->fcp_cmnd = psb->data; | |
533 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
534 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 535 | sizeof(struct fcp_rsp); |
dea3101e | 536 | |
3772a991 JS |
537 | /* Initialize local short-hand pointers. */ |
538 | bpl = psb->fcp_bpl; | |
539 | pdma_phys_fcp_cmd = psb->dma_handle; | |
540 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
541 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
542 | sizeof(struct fcp_rsp); | |
543 | ||
544 | /* | |
545 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
546 | * are sg list bdes. Initialize the first two and leave the | |
547 | * rest for queuecommand. | |
548 | */ | |
549 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
550 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
551 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
552 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
553 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
554 | ||
555 | /* Setup the physical region for the FCP RSP */ | |
556 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
557 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
558 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
559 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
560 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
561 | ||
562 | /* | |
563 | * Since the IOCB for the FCP I/O is built into this | |
564 | * lpfc_scsi_buf, initialize it with all known data now. | |
565 | */ | |
566 | iocb = &psb->cur_iocbq.iocb; | |
567 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
568 | if ((phba->sli_rev == 3) && | |
569 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
570 | /* fill in immediate fcp command BDE */ | |
571 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
572 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
573 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
574 | unsli3.fcp_ext.icd); | |
575 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
576 | iocb->ulpBdeCount = 0; | |
577 | iocb->ulpLe = 0; | |
578 | /* fill in responce BDE */ | |
579 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = | |
580 | BUFF_TYPE_BDE_64; | |
581 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
582 | sizeof(struct fcp_rsp); | |
583 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
584 | putPaddrLow(pdma_phys_fcp_rsp); | |
585 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
586 | putPaddrHigh(pdma_phys_fcp_rsp); | |
587 | } else { | |
588 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
589 | iocb->un.fcpi64.bdl.bdeSize = | |
590 | (2 * sizeof(struct ulp_bde64)); | |
591 | iocb->un.fcpi64.bdl.addrLow = | |
592 | putPaddrLow(pdma_phys_bpl); | |
593 | iocb->un.fcpi64.bdl.addrHigh = | |
594 | putPaddrHigh(pdma_phys_bpl); | |
595 | iocb->ulpBdeCount = 1; | |
596 | iocb->ulpLe = 1; | |
597 | } | |
598 | iocb->ulpClass = CLASS3; | |
599 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 | 600 | /* Put it back into the SCSI buffer list */ |
1c6f4ef5 | 601 | lpfc_release_scsi_buf_s3(phba, psb); |
dea3101e | 602 | |
34b02dcd | 603 | } |
dea3101e | 604 | |
3772a991 | 605 | return bcnt; |
dea3101e JB |
606 | } |
607 | ||
da0436e9 JS |
608 | /** |
609 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
610 | * @phba: pointer to lpfc hba data structure. | |
611 | * @axri: pointer to the fcp xri abort wcqe structure. | |
612 | * | |
613 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
614 | * FCP aborted xri. | |
615 | **/ | |
616 | void | |
617 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
618 | struct sli4_wcqe_xri_aborted *axri) | |
619 | { | |
620 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
621 | struct lpfc_scsi_buf *psb, *next_psb; | |
622 | unsigned long iflag = 0; | |
623 | ||
624 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, iflag); | |
625 | list_for_each_entry_safe(psb, next_psb, | |
626 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
627 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
628 | list_del(&psb->list); | |
341af102 | 629 | psb->exch_busy = 0; |
da0436e9 JS |
630 | psb->status = IOSTAT_SUCCESS; |
631 | spin_unlock_irqrestore( | |
632 | &phba->sli4_hba.abts_scsi_buf_list_lock, | |
633 | iflag); | |
634 | lpfc_release_scsi_buf_s4(phba, psb); | |
635 | return; | |
636 | } | |
637 | } | |
638 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
639 | iflag); | |
640 | } | |
641 | ||
642 | /** | |
643 | * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block | |
644 | * @phba: pointer to lpfc hba data structure. | |
645 | * | |
646 | * This routine walks the list of scsi buffers that have been allocated and | |
647 | * repost them to the HBA by using SGL block post. This is needed after a | |
648 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
649 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
650 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
651 | * | |
652 | * Returns: 0 = success, non-zero failure. | |
653 | **/ | |
654 | int | |
655 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
656 | { | |
657 | struct lpfc_scsi_buf *psb; | |
658 | int index, status, bcnt = 0, rcnt = 0, rc = 0; | |
659 | LIST_HEAD(sblist); | |
660 | ||
661 | for (index = 0; index < phba->sli4_hba.scsi_xri_cnt; index++) { | |
662 | psb = phba->sli4_hba.lpfc_scsi_psb_array[index]; | |
663 | if (psb) { | |
664 | /* Remove from SCSI buffer list */ | |
665 | list_del(&psb->list); | |
666 | /* Add it to a local SCSI buffer list */ | |
667 | list_add_tail(&psb->list, &sblist); | |
668 | if (++rcnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
669 | bcnt = rcnt; | |
670 | rcnt = 0; | |
671 | } | |
672 | } else | |
673 | /* A hole present in the XRI array, need to skip */ | |
674 | bcnt = rcnt; | |
675 | ||
676 | if (index == phba->sli4_hba.scsi_xri_cnt - 1) | |
677 | /* End of XRI array for SCSI buffer, complete */ | |
678 | bcnt = rcnt; | |
679 | ||
680 | /* Continue until collect up to a nembed page worth of sgls */ | |
681 | if (bcnt == 0) | |
682 | continue; | |
683 | /* Now, post the SCSI buffer list sgls as a block */ | |
684 | status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt); | |
685 | /* Reset SCSI buffer count for next round of posting */ | |
686 | bcnt = 0; | |
687 | while (!list_empty(&sblist)) { | |
688 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
689 | list); | |
690 | if (status) { | |
691 | /* Put this back on the abort scsi list */ | |
341af102 | 692 | psb->exch_busy = 1; |
da0436e9 | 693 | rc++; |
341af102 JS |
694 | } else { |
695 | psb->exch_busy = 0; | |
da0436e9 | 696 | psb->status = IOSTAT_SUCCESS; |
341af102 | 697 | } |
da0436e9 JS |
698 | /* Put it back into the SCSI buffer list */ |
699 | lpfc_release_scsi_buf_s4(phba, psb); | |
700 | } | |
701 | } | |
702 | return rc; | |
703 | } | |
704 | ||
705 | /** | |
706 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
707 | * @vport: The virtual port for which this call being executed. | |
708 | * @num_to_allocate: The requested number of buffers to allocate. | |
709 | * | |
710 | * This routine allocates a scsi buffer for device with SLI-4 interface spec, | |
711 | * the scsi buffer contains all the necessary information needed to initiate | |
712 | * a SCSI I/O. | |
713 | * | |
714 | * Return codes: | |
715 | * int - number of scsi buffers that were allocated. | |
716 | * 0 = failure, less than num_to_alloc is a partial failure. | |
717 | **/ | |
718 | static int | |
719 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
720 | { | |
721 | struct lpfc_hba *phba = vport->phba; | |
722 | struct lpfc_scsi_buf *psb; | |
723 | struct sli4_sge *sgl; | |
724 | IOCB_t *iocb; | |
725 | dma_addr_t pdma_phys_fcp_cmd; | |
726 | dma_addr_t pdma_phys_fcp_rsp; | |
727 | dma_addr_t pdma_phys_bpl, pdma_phys_bpl1; | |
728 | uint16_t iotag, last_xritag = NO_XRI; | |
729 | int status = 0, index; | |
730 | int bcnt; | |
731 | int non_sequential_xri = 0; | |
732 | int rc = 0; | |
733 | LIST_HEAD(sblist); | |
734 | ||
735 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { | |
736 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
737 | if (!psb) | |
738 | break; | |
739 | ||
740 | /* | |
741 | * Get memory from the pci pool to map the virt space to pci bus | |
742 | * space for an I/O. The DMA buffer includes space for the | |
743 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
744 | * necessary to support the sg_tablesize. | |
745 | */ | |
746 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
747 | GFP_KERNEL, &psb->dma_handle); | |
748 | if (!psb->data) { | |
749 | kfree(psb); | |
750 | break; | |
751 | } | |
752 | ||
753 | /* Initialize virtual ptrs to dma_buf region. */ | |
754 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
755 | ||
756 | /* Allocate iotag for psb->cur_iocbq. */ | |
757 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
758 | if (iotag == 0) { | |
759 | kfree(psb); | |
760 | break; | |
761 | } | |
762 | ||
763 | psb->cur_iocbq.sli4_xritag = lpfc_sli4_next_xritag(phba); | |
764 | if (psb->cur_iocbq.sli4_xritag == NO_XRI) { | |
765 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
766 | psb->data, psb->dma_handle); | |
767 | kfree(psb); | |
768 | break; | |
769 | } | |
770 | if (last_xritag != NO_XRI | |
771 | && psb->cur_iocbq.sli4_xritag != (last_xritag+1)) { | |
772 | non_sequential_xri = 1; | |
773 | } else | |
774 | list_add_tail(&psb->list, &sblist); | |
775 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
776 | ||
777 | index = phba->sli4_hba.scsi_xri_cnt++; | |
778 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
779 | ||
780 | psb->fcp_bpl = psb->data; | |
781 | psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size) | |
782 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
783 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + | |
784 | sizeof(struct fcp_cmnd)); | |
785 | ||
786 | /* Initialize local short-hand pointers. */ | |
787 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
788 | pdma_phys_bpl = psb->dma_handle; | |
789 | pdma_phys_fcp_cmd = | |
790 | (psb->dma_handle + phba->cfg_sg_dma_buf_size) | |
791 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
792 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); | |
793 | ||
794 | /* | |
795 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
796 | * are sg list bdes. Initialize the first two and leave the | |
797 | * rest for queuecommand. | |
798 | */ | |
799 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
800 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
801 | bf_set(lpfc_sli4_sge_len, sgl, sizeof(struct fcp_cmnd)); | |
802 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
803 | sgl->word2 = cpu_to_le32(sgl->word2); | |
804 | sgl->word3 = cpu_to_le32(sgl->word3); | |
805 | sgl++; | |
806 | ||
807 | /* Setup the physical region for the FCP RSP */ | |
808 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
809 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
810 | bf_set(lpfc_sli4_sge_len, sgl, sizeof(struct fcp_rsp)); | |
811 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
812 | sgl->word2 = cpu_to_le32(sgl->word2); | |
813 | sgl->word3 = cpu_to_le32(sgl->word3); | |
814 | ||
815 | /* | |
816 | * Since the IOCB for the FCP I/O is built into this | |
817 | * lpfc_scsi_buf, initialize it with all known data now. | |
818 | */ | |
819 | iocb = &psb->cur_iocbq.iocb; | |
820 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
821 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
822 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
823 | * We are setting the bpl to point to out sgl. An sgl's | |
824 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
825 | */ | |
826 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
827 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
828 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
829 | iocb->ulpBdeCount = 1; | |
830 | iocb->ulpLe = 1; | |
831 | iocb->ulpClass = CLASS3; | |
832 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) | |
833 | pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE; | |
834 | else | |
835 | pdma_phys_bpl1 = 0; | |
836 | psb->dma_phys_bpl = pdma_phys_bpl; | |
837 | phba->sli4_hba.lpfc_scsi_psb_array[index] = psb; | |
838 | if (non_sequential_xri) { | |
839 | status = lpfc_sli4_post_sgl(phba, pdma_phys_bpl, | |
840 | pdma_phys_bpl1, | |
841 | psb->cur_iocbq.sli4_xritag); | |
842 | if (status) { | |
843 | /* Put this back on the abort scsi list */ | |
341af102 | 844 | psb->exch_busy = 1; |
da0436e9 | 845 | rc++; |
341af102 JS |
846 | } else { |
847 | psb->exch_busy = 0; | |
da0436e9 | 848 | psb->status = IOSTAT_SUCCESS; |
341af102 | 849 | } |
da0436e9 JS |
850 | /* Put it back into the SCSI buffer list */ |
851 | lpfc_release_scsi_buf_s4(phba, psb); | |
852 | break; | |
853 | } | |
854 | } | |
855 | if (bcnt) { | |
856 | status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt); | |
857 | /* Reset SCSI buffer count for next round of posting */ | |
858 | while (!list_empty(&sblist)) { | |
859 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
860 | list); | |
861 | if (status) { | |
862 | /* Put this back on the abort scsi list */ | |
341af102 | 863 | psb->exch_busy = 1; |
da0436e9 | 864 | rc++; |
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 | } | |
872 | } | |
873 | ||
874 | return bcnt + non_sequential_xri - rc; | |
875 | } | |
876 | ||
9bad7671 | 877 | /** |
3772a991 JS |
878 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
879 | * @vport: The virtual port for which this call being executed. | |
880 | * @num_to_allocate: The requested number of buffers to allocate. | |
881 | * | |
882 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
883 | * the lpfc_hba struct. | |
884 | * | |
885 | * Return codes: | |
886 | * int - number of scsi buffers that were allocated. | |
887 | * 0 = failure, less than num_to_alloc is a partial failure. | |
888 | **/ | |
889 | static inline int | |
890 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
891 | { | |
892 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
893 | } | |
894 | ||
895 | /** | |
896 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
897 | * @phba: The HBA for which this call is being executed. | |
9bad7671 JS |
898 | * |
899 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
900 | * and returns to caller. | |
901 | * | |
902 | * Return codes: | |
903 | * NULL - Error | |
904 | * Pointer to lpfc_scsi_buf - Success | |
905 | **/ | |
455c53ec | 906 | static struct lpfc_scsi_buf* |
875fbdfe | 907 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 908 | { |
0bd4ca25 JSEC |
909 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
910 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 911 | unsigned long iflag = 0; |
0bd4ca25 | 912 | |
875fbdfe | 913 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 914 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
915 | if (lpfc_cmd) { |
916 | lpfc_cmd->seg_cnt = 0; | |
917 | lpfc_cmd->nonsg_phys = 0; | |
e2a0a9d6 | 918 | lpfc_cmd->prot_seg_cnt = 0; |
1dcb58e5 | 919 | } |
875fbdfe | 920 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
921 | return lpfc_cmd; |
922 | } | |
dea3101e | 923 | |
9bad7671 | 924 | /** |
3772a991 | 925 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
926 | * @phba: The Hba for which this call is being executed. |
927 | * @psb: The scsi buffer which is being released. | |
928 | * | |
929 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
930 | * lpfc_scsi_buf_list list. | |
931 | **/ | |
0bd4ca25 | 932 | static void |
3772a991 | 933 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 934 | { |
875fbdfe | 935 | unsigned long iflag = 0; |
dea3101e | 936 | |
875fbdfe | 937 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 938 | psb->pCmd = NULL; |
dea3101e | 939 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 940 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e JB |
941 | } |
942 | ||
da0436e9 JS |
943 | /** |
944 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
945 | * @phba: The Hba for which this call is being executed. | |
946 | * @psb: The scsi buffer which is being released. | |
947 | * | |
948 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
949 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
950 | * and cannot be reused for at least RA_TOV amount of time if it was | |
951 | * aborted. | |
952 | **/ | |
953 | static void | |
954 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
955 | { | |
956 | unsigned long iflag = 0; | |
957 | ||
341af102 | 958 | if (psb->exch_busy) { |
da0436e9 JS |
959 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, |
960 | iflag); | |
961 | psb->pCmd = NULL; | |
962 | list_add_tail(&psb->list, | |
963 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
964 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
965 | iflag); | |
966 | } else { | |
967 | ||
968 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
969 | psb->pCmd = NULL; | |
970 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); | |
971 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); | |
972 | } | |
973 | } | |
974 | ||
9bad7671 | 975 | /** |
3772a991 JS |
976 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
977 | * @phba: The Hba for which this call is being executed. | |
978 | * @psb: The scsi buffer which is being released. | |
979 | * | |
980 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
981 | * lpfc_scsi_buf_list list. | |
982 | **/ | |
983 | static void | |
984 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
985 | { | |
986 | ||
987 | phba->lpfc_release_scsi_buf(phba, psb); | |
988 | } | |
989 | ||
990 | /** | |
991 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
992 | * @phba: The Hba for which this call is being executed. |
993 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
994 | * | |
995 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
996 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
997 | * through sg elements and format the bdea. This routine also initializes all | |
998 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
999 | * |
1000 | * Return codes: | |
1001 | * 1 - Error | |
1002 | * 0 - Success | |
1003 | **/ | |
dea3101e | 1004 | static int |
3772a991 | 1005 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e JB |
1006 | { |
1007 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1008 | struct scatterlist *sgel = NULL; | |
1009 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1010 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1011 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
34b02dcd | 1012 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1013 | dma_addr_t physaddr; |
34b02dcd | 1014 | uint32_t num_bde = 0; |
a0b4f78f | 1015 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e JB |
1016 | |
1017 | /* | |
1018 | * There are three possibilities here - use scatter-gather segment, use | |
1019 | * the single mapping, or neither. Start the lpfc command prep by | |
1020 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1021 | * data bde entry. | |
1022 | */ | |
1023 | bpl += 2; | |
c59fd9eb | 1024 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
1025 | /* |
1026 | * The driver stores the segment count returned from pci_map_sg | |
1027 | * because this a count of dma-mappings used to map the use_sg | |
1028 | * pages. They are not guaranteed to be the same for those | |
1029 | * architectures that implement an IOMMU. | |
1030 | */ | |
dea3101e | 1031 | |
c59fd9eb FT |
1032 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1033 | scsi_sg_count(scsi_cmnd), datadir); | |
1034 | if (unlikely(!nseg)) | |
1035 | return 1; | |
1036 | ||
a0b4f78f | 1037 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1038 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1039 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1040 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1041 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1042 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1043 | lpfc_cmd->seg_cnt); |
a0b4f78f | 1044 | scsi_dma_unmap(scsi_cmnd); |
dea3101e JB |
1045 | return 1; |
1046 | } | |
1047 | ||
1048 | /* | |
1049 | * The driver established a maximum scatter-gather segment count | |
1050 | * during probe that limits the number of sg elements in any | |
1051 | * single scsi command. Just run through the seg_cnt and format | |
1052 | * the bde's. | |
34b02dcd JS |
1053 | * When using SLI-3 the driver will try to fit all the BDEs into |
1054 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1055 | * does for SLI-2 mode. | |
dea3101e | 1056 | */ |
34b02dcd | 1057 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1058 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1059 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1060 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
34b02dcd JS |
1061 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1062 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1063 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1064 | data_bde->addrLow = putPaddrLow(physaddr); | |
1065 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1066 | data_bde++; | |
1067 | } else { | |
1068 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1069 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1070 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1071 | bpl->addrLow = | |
1072 | le32_to_cpu(putPaddrLow(physaddr)); | |
1073 | bpl->addrHigh = | |
1074 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1075 | bpl++; | |
1076 | } | |
dea3101e | 1077 | } |
c59fd9eb | 1078 | } |
dea3101e JB |
1079 | |
1080 | /* | |
1081 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1082 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1083 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1084 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1085 | */ |
e2a0a9d6 JS |
1086 | if (phba->sli_rev == 3 && |
1087 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
34b02dcd JS |
1088 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1089 | /* | |
1090 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1091 | * This I/O has more than 3 BDE so the 1st data bde will | |
1092 | * be a BPL that is filled in here. | |
1093 | */ | |
1094 | physaddr = lpfc_cmd->dma_handle; | |
1095 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1096 | data_bde->tus.f.bdeSize = (num_bde * | |
1097 | sizeof(struct ulp_bde64)); | |
1098 | physaddr += (sizeof(struct fcp_cmnd) + | |
1099 | sizeof(struct fcp_rsp) + | |
1100 | (2 * sizeof(struct ulp_bde64))); | |
1101 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1102 | data_bde->addrLow = putPaddrLow(physaddr); | |
1103 | /* ebde count includes the responce bde and data bpl */ | |
1104 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; | |
1105 | } else { | |
1106 | /* ebde count includes the responce bde and data bdes */ | |
1107 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); | |
1108 | } | |
1109 | } else { | |
1110 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1111 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
1112 | } | |
09372820 | 1113 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1114 | |
1115 | /* | |
1116 | * Due to difference in data length between DIF/non-DIF paths, | |
1117 | * we need to set word 4 of IOCB here | |
1118 | */ | |
a257bf90 | 1119 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1120 | return 0; |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | * Given a scsi cmnd, determine the BlockGuard profile to be used | |
1125 | * with the cmd | |
1126 | */ | |
1127 | static int | |
6a9c52cf | 1128 | lpfc_sc_to_sli_prof(struct lpfc_hba *phba, struct scsi_cmnd *sc) |
e2a0a9d6 JS |
1129 | { |
1130 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
1131 | uint8_t ret_prof = LPFC_PROF_INVALID; | |
1132 | ||
1133 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
1134 | switch (scsi_get_prot_op(sc)) { | |
1135 | case SCSI_PROT_READ_INSERT: | |
1136 | case SCSI_PROT_WRITE_STRIP: | |
1137 | ret_prof = LPFC_PROF_AST2; | |
1138 | break; | |
1139 | ||
1140 | case SCSI_PROT_READ_STRIP: | |
1141 | case SCSI_PROT_WRITE_INSERT: | |
1142 | ret_prof = LPFC_PROF_A1; | |
1143 | break; | |
1144 | ||
c6af4042 MP |
1145 | case SCSI_PROT_READ_PASS: |
1146 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
1147 | ret_prof = LPFC_PROF_AST1; |
1148 | break; | |
1149 | ||
e2a0a9d6 JS |
1150 | case SCSI_PROT_NORMAL: |
1151 | default: | |
6a9c52cf JS |
1152 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1153 | "9063 BLKGRD:Bad op/guard:%d/%d combination\n", | |
e2a0a9d6 JS |
1154 | scsi_get_prot_op(sc), guard_type); |
1155 | break; | |
1156 | ||
1157 | } | |
1158 | } else if (guard_type == SHOST_DIX_GUARD_CRC) { | |
1159 | switch (scsi_get_prot_op(sc)) { | |
1160 | case SCSI_PROT_READ_STRIP: | |
1161 | case SCSI_PROT_WRITE_INSERT: | |
1162 | ret_prof = LPFC_PROF_A1; | |
1163 | break; | |
1164 | ||
1165 | case SCSI_PROT_READ_PASS: | |
1166 | case SCSI_PROT_WRITE_PASS: | |
1167 | ret_prof = LPFC_PROF_C1; | |
1168 | break; | |
1169 | ||
e2a0a9d6 JS |
1170 | case SCSI_PROT_READ_INSERT: |
1171 | case SCSI_PROT_WRITE_STRIP: | |
1172 | case SCSI_PROT_NORMAL: | |
1173 | default: | |
6a9c52cf JS |
1174 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1175 | "9075 BLKGRD: Bad op/guard:%d/%d combination\n", | |
e2a0a9d6 JS |
1176 | scsi_get_prot_op(sc), guard_type); |
1177 | break; | |
1178 | } | |
1179 | } else { | |
1180 | /* unsupported format */ | |
1181 | BUG(); | |
1182 | } | |
1183 | ||
1184 | return ret_prof; | |
1185 | } | |
1186 | ||
1187 | struct scsi_dif_tuple { | |
1188 | __be16 guard_tag; /* Checksum */ | |
1189 | __be16 app_tag; /* Opaque storage */ | |
1190 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
1191 | }; | |
1192 | ||
1193 | static inline unsigned | |
1194 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
1195 | { | |
1196 | return sc->device->sector_size; | |
1197 | } | |
1198 | ||
1199 | /** | |
1200 | * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command | |
1201 | * @sc: in: SCSI command | |
3621a710 JS |
1202 | * @apptagmask: out: app tag mask |
1203 | * @apptagval: out: app tag value | |
1204 | * @reftag: out: ref tag (reference tag) | |
e2a0a9d6 JS |
1205 | * |
1206 | * Description: | |
98a1708d MO |
1207 | * Extract DIF parameters from the command if possible. Otherwise, |
1208 | * use default parameters. | |
e2a0a9d6 JS |
1209 | * |
1210 | **/ | |
1211 | static inline void | |
1212 | lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask, | |
1213 | uint16_t *apptagval, uint32_t *reftag) | |
1214 | { | |
1215 | struct scsi_dif_tuple *spt; | |
1216 | unsigned char op = scsi_get_prot_op(sc); | |
1217 | unsigned int protcnt = scsi_prot_sg_count(sc); | |
1218 | static int cnt; | |
1219 | ||
1220 | if (protcnt && (op == SCSI_PROT_WRITE_STRIP || | |
c6af4042 | 1221 | op == SCSI_PROT_WRITE_PASS)) { |
e2a0a9d6 JS |
1222 | |
1223 | cnt++; | |
1224 | spt = page_address(sg_page(scsi_prot_sglist(sc))) + | |
1225 | scsi_prot_sglist(sc)[0].offset; | |
1226 | *apptagmask = 0; | |
1227 | *apptagval = 0; | |
1228 | *reftag = cpu_to_be32(spt->ref_tag); | |
1229 | ||
1230 | } else { | |
1231 | /* SBC defines ref tag to be lower 32bits of LBA */ | |
1232 | *reftag = (uint32_t) (0xffffffff & scsi_get_lba(sc)); | |
1233 | *apptagmask = 0; | |
1234 | *apptagval = 0; | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | /* | |
1239 | * This function sets up buffer list for protection groups of | |
1240 | * type LPFC_PG_TYPE_NO_DIF | |
1241 | * | |
1242 | * This is usually used when the HBA is instructed to generate | |
1243 | * DIFs and insert them into data stream (or strip DIF from | |
1244 | * incoming data stream) | |
1245 | * | |
1246 | * The buffer list consists of just one protection group described | |
1247 | * below: | |
1248 | * +-------------------------+ | |
1249 | * start of prot group --> | PDE_1 | | |
1250 | * +-------------------------+ | |
1251 | * | Data BDE | | |
1252 | * +-------------------------+ | |
1253 | * |more Data BDE's ... (opt)| | |
1254 | * +-------------------------+ | |
1255 | * | |
1256 | * @sc: pointer to scsi command we're working on | |
1257 | * @bpl: pointer to buffer list for protection groups | |
1258 | * @datacnt: number of segments of data that have been dma mapped | |
1259 | * | |
1260 | * Note: Data s/g buffers have been dma mapped | |
1261 | */ | |
1262 | static int | |
1263 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1264 | struct ulp_bde64 *bpl, int datasegcnt) | |
1265 | { | |
1266 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
1267 | struct lpfc_pde *pde1 = NULL; | |
1268 | dma_addr_t physaddr; | |
1269 | int i = 0, num_bde = 0; | |
1270 | int datadir = sc->sc_data_direction; | |
1271 | int prof = LPFC_PROF_INVALID; | |
1272 | unsigned blksize; | |
1273 | uint32_t reftag; | |
1274 | uint16_t apptagmask, apptagval; | |
1275 | ||
1276 | pde1 = (struct lpfc_pde *) bpl; | |
6a9c52cf | 1277 | prof = lpfc_sc_to_sli_prof(phba, sc); |
e2a0a9d6 JS |
1278 | |
1279 | if (prof == LPFC_PROF_INVALID) | |
1280 | goto out; | |
1281 | ||
1282 | /* extract some info from the scsi command for PDE1*/ | |
1283 | blksize = lpfc_cmd_blksize(sc); | |
1284 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1285 | ||
1286 | /* setup PDE1 with what we have */ | |
1287 | lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize, | |
1288 | BG_EC_STOP_ERR); | |
1289 | lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag); | |
1290 | ||
1291 | num_bde++; | |
1292 | bpl++; | |
1293 | ||
1294 | /* assumption: caller has already run dma_map_sg on command data */ | |
1295 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
1296 | physaddr = sg_dma_address(sgde); | |
1297 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
1298 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
1299 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
1300 | if (datadir == DMA_TO_DEVICE) | |
1301 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1302 | else | |
1303 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1304 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1305 | bpl++; | |
1306 | num_bde++; | |
1307 | } | |
1308 | ||
1309 | out: | |
1310 | return num_bde; | |
1311 | } | |
1312 | ||
1313 | /* | |
1314 | * This function sets up buffer list for protection groups of | |
1315 | * type LPFC_PG_TYPE_DIF_BUF | |
1316 | * | |
1317 | * This is usually used when DIFs are in their own buffers, | |
1318 | * separate from the data. The HBA can then by instructed | |
1319 | * to place the DIFs in the outgoing stream. For read operations, | |
1320 | * The HBA could extract the DIFs and place it in DIF buffers. | |
1321 | * | |
1322 | * The buffer list for this type consists of one or more of the | |
1323 | * protection groups described below: | |
1324 | * +-------------------------+ | |
1325 | * start of first prot group --> | PDE_1 | | |
1326 | * +-------------------------+ | |
1327 | * | PDE_3 (Prot BDE) | | |
1328 | * +-------------------------+ | |
1329 | * | Data BDE | | |
1330 | * +-------------------------+ | |
1331 | * |more Data BDE's ... (opt)| | |
1332 | * +-------------------------+ | |
1333 | * start of new prot group --> | PDE_1 | | |
1334 | * +-------------------------+ | |
1335 | * | ... | | |
1336 | * +-------------------------+ | |
1337 | * | |
1338 | * @sc: pointer to scsi command we're working on | |
1339 | * @bpl: pointer to buffer list for protection groups | |
1340 | * @datacnt: number of segments of data that have been dma mapped | |
1341 | * @protcnt: number of segment of protection data that have been dma mapped | |
1342 | * | |
1343 | * Note: It is assumed that both data and protection s/g buffers have been | |
1344 | * mapped for DMA | |
1345 | */ | |
1346 | static int | |
1347 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1348 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
1349 | { | |
1350 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
1351 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
1352 | struct lpfc_pde *pde1 = NULL; | |
1353 | struct ulp_bde64 *prot_bde = NULL; | |
1354 | dma_addr_t dataphysaddr, protphysaddr; | |
1355 | unsigned short curr_data = 0, curr_prot = 0; | |
1356 | unsigned int split_offset, protgroup_len; | |
1357 | unsigned int protgrp_blks, protgrp_bytes; | |
1358 | unsigned int remainder, subtotal; | |
1359 | int prof = LPFC_PROF_INVALID; | |
1360 | int datadir = sc->sc_data_direction; | |
1361 | unsigned char pgdone = 0, alldone = 0; | |
1362 | unsigned blksize; | |
1363 | uint32_t reftag; | |
1364 | uint16_t apptagmask, apptagval; | |
1365 | int num_bde = 0; | |
1366 | ||
1367 | sgpe = scsi_prot_sglist(sc); | |
1368 | sgde = scsi_sglist(sc); | |
1369 | ||
1370 | if (!sgpe || !sgde) { | |
1371 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1372 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
1373 | sgpe, sgde); | |
1374 | return 0; | |
1375 | } | |
1376 | ||
6a9c52cf | 1377 | prof = lpfc_sc_to_sli_prof(phba, sc); |
e2a0a9d6 JS |
1378 | if (prof == LPFC_PROF_INVALID) |
1379 | goto out; | |
1380 | ||
1381 | /* extract some info from the scsi command for PDE1*/ | |
1382 | blksize = lpfc_cmd_blksize(sc); | |
1383 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1384 | ||
1385 | split_offset = 0; | |
1386 | do { | |
1387 | /* setup the first PDE_1 */ | |
1388 | pde1 = (struct lpfc_pde *) bpl; | |
1389 | ||
1390 | lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize, | |
1391 | BG_EC_STOP_ERR); | |
1392 | lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag); | |
1393 | ||
1394 | num_bde++; | |
1395 | bpl++; | |
1396 | ||
1397 | /* setup the first BDE that points to protection buffer */ | |
1398 | prot_bde = (struct ulp_bde64 *) bpl; | |
1399 | protphysaddr = sg_dma_address(sgpe); | |
1400 | prot_bde->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
1401 | prot_bde->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
1402 | protgroup_len = sg_dma_len(sgpe); | |
1403 | ||
1404 | ||
1405 | /* must be integer multiple of the DIF block length */ | |
1406 | BUG_ON(protgroup_len % 8); | |
1407 | ||
1408 | protgrp_blks = protgroup_len / 8; | |
1409 | protgrp_bytes = protgrp_blks * blksize; | |
1410 | ||
1411 | prot_bde->tus.f.bdeSize = protgroup_len; | |
1412 | if (datadir == DMA_TO_DEVICE) | |
1413 | prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1414 | else | |
1415 | prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1416 | prot_bde->tus.w = le32_to_cpu(bpl->tus.w); | |
1417 | ||
1418 | curr_prot++; | |
1419 | num_bde++; | |
1420 | ||
1421 | /* setup BDE's for data blocks associated with DIF data */ | |
1422 | pgdone = 0; | |
1423 | subtotal = 0; /* total bytes processed for current prot grp */ | |
1424 | while (!pgdone) { | |
1425 | if (!sgde) { | |
6a9c52cf JS |
1426 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1427 | "9065 BLKGRD:%s Invalid data segment\n", | |
e2a0a9d6 JS |
1428 | __func__); |
1429 | return 0; | |
1430 | } | |
1431 | bpl++; | |
1432 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
1433 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
1434 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
1435 | ||
1436 | remainder = sg_dma_len(sgde) - split_offset; | |
1437 | ||
1438 | if ((subtotal + remainder) <= protgrp_bytes) { | |
1439 | /* we can use this whole buffer */ | |
1440 | bpl->tus.f.bdeSize = remainder; | |
1441 | split_offset = 0; | |
1442 | ||
1443 | if ((subtotal + remainder) == protgrp_bytes) | |
1444 | pgdone = 1; | |
1445 | } else { | |
1446 | /* must split this buffer with next prot grp */ | |
1447 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
1448 | split_offset += bpl->tus.f.bdeSize; | |
1449 | } | |
1450 | ||
1451 | subtotal += bpl->tus.f.bdeSize; | |
1452 | ||
1453 | if (datadir == DMA_TO_DEVICE) | |
1454 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1455 | else | |
1456 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1457 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1458 | ||
1459 | num_bde++; | |
1460 | curr_data++; | |
1461 | ||
1462 | if (split_offset) | |
1463 | break; | |
1464 | ||
1465 | /* Move to the next s/g segment if possible */ | |
1466 | sgde = sg_next(sgde); | |
1467 | } | |
1468 | ||
1469 | /* are we done ? */ | |
1470 | if (curr_prot == protcnt) { | |
1471 | alldone = 1; | |
1472 | } else if (curr_prot < protcnt) { | |
1473 | /* advance to next prot buffer */ | |
1474 | sgpe = sg_next(sgpe); | |
1475 | bpl++; | |
1476 | ||
1477 | /* update the reference tag */ | |
1478 | reftag += protgrp_blks; | |
1479 | } else { | |
1480 | /* if we're here, we have a bug */ | |
6a9c52cf JS |
1481 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1482 | "9054 BLKGRD: bug in %s\n", __func__); | |
e2a0a9d6 JS |
1483 | } |
1484 | ||
1485 | } while (!alldone); | |
1486 | ||
1487 | out: | |
1488 | ||
1489 | ||
1490 | return num_bde; | |
1491 | } | |
1492 | /* | |
1493 | * Given a SCSI command that supports DIF, determine composition of protection | |
1494 | * groups involved in setting up buffer lists | |
1495 | * | |
1496 | * Returns: | |
1497 | * for DIF (for both read and write) | |
1498 | * */ | |
1499 | static int | |
1500 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
1501 | { | |
1502 | int ret = LPFC_PG_TYPE_INVALID; | |
1503 | unsigned char op = scsi_get_prot_op(sc); | |
1504 | ||
1505 | switch (op) { | |
1506 | case SCSI_PROT_READ_STRIP: | |
1507 | case SCSI_PROT_WRITE_INSERT: | |
1508 | ret = LPFC_PG_TYPE_NO_DIF; | |
1509 | break; | |
1510 | case SCSI_PROT_READ_INSERT: | |
1511 | case SCSI_PROT_WRITE_STRIP: | |
1512 | case SCSI_PROT_READ_PASS: | |
1513 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
1514 | ret = LPFC_PG_TYPE_DIF_BUF; |
1515 | break; | |
1516 | default: | |
1517 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1518 | "9021 Unsupported protection op:%d\n", op); | |
1519 | break; | |
1520 | } | |
1521 | ||
1522 | return ret; | |
1523 | } | |
1524 | ||
1525 | /* | |
1526 | * This is the protection/DIF aware version of | |
1527 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
1528 | * two functions eventually, but for now, it's here | |
1529 | */ | |
1530 | static int | |
1531 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, | |
1532 | struct lpfc_scsi_buf *lpfc_cmd) | |
1533 | { | |
1534 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1535 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1536 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1537 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1538 | uint32_t num_bde = 0; | |
1539 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
1540 | int prot_group_type = 0; | |
1541 | int diflen, fcpdl; | |
1542 | unsigned blksize; | |
1543 | ||
1544 | /* | |
1545 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
1546 | * fcp_rsp regions to the first data bde entry | |
1547 | */ | |
1548 | bpl += 2; | |
1549 | if (scsi_sg_count(scsi_cmnd)) { | |
1550 | /* | |
1551 | * The driver stores the segment count returned from pci_map_sg | |
1552 | * because this a count of dma-mappings used to map the use_sg | |
1553 | * pages. They are not guaranteed to be the same for those | |
1554 | * architectures that implement an IOMMU. | |
1555 | */ | |
1556 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
1557 | scsi_sglist(scsi_cmnd), | |
1558 | scsi_sg_count(scsi_cmnd), datadir); | |
1559 | if (unlikely(!datasegcnt)) | |
1560 | return 1; | |
1561 | ||
1562 | lpfc_cmd->seg_cnt = datasegcnt; | |
1563 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1564 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1565 | "9067 BLKGRD: %s: Too many sg segments" | |
1566 | " from dma_map_sg. Config %d, seg_cnt" | |
1567 | " %d\n", | |
e2a0a9d6 JS |
1568 | __func__, phba->cfg_sg_seg_cnt, |
1569 | lpfc_cmd->seg_cnt); | |
1570 | scsi_dma_unmap(scsi_cmnd); | |
1571 | return 1; | |
1572 | } | |
1573 | ||
1574 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
1575 | ||
1576 | switch (prot_group_type) { | |
1577 | case LPFC_PG_TYPE_NO_DIF: | |
1578 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, | |
1579 | datasegcnt); | |
1580 | /* we shoud have 2 or more entries in buffer list */ | |
1581 | if (num_bde < 2) | |
1582 | goto err; | |
1583 | break; | |
1584 | case LPFC_PG_TYPE_DIF_BUF:{ | |
1585 | /* | |
1586 | * This type indicates that protection buffers are | |
1587 | * passed to the driver, so that needs to be prepared | |
1588 | * for DMA | |
1589 | */ | |
1590 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
1591 | scsi_prot_sglist(scsi_cmnd), | |
1592 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
1593 | if (unlikely(!protsegcnt)) { | |
1594 | scsi_dma_unmap(scsi_cmnd); | |
1595 | return 1; | |
1596 | } | |
1597 | ||
1598 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
1599 | if (lpfc_cmd->prot_seg_cnt | |
1600 | > phba->cfg_prot_sg_seg_cnt) { | |
6a9c52cf JS |
1601 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1602 | "9068 BLKGRD: %s: Too many prot sg " | |
1603 | "segments from dma_map_sg. Config %d," | |
e2a0a9d6 JS |
1604 | "prot_seg_cnt %d\n", __func__, |
1605 | phba->cfg_prot_sg_seg_cnt, | |
1606 | lpfc_cmd->prot_seg_cnt); | |
1607 | dma_unmap_sg(&phba->pcidev->dev, | |
1608 | scsi_prot_sglist(scsi_cmnd), | |
1609 | scsi_prot_sg_count(scsi_cmnd), | |
1610 | datadir); | |
1611 | scsi_dma_unmap(scsi_cmnd); | |
1612 | return 1; | |
1613 | } | |
1614 | ||
1615 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
1616 | datasegcnt, protsegcnt); | |
1617 | /* we shoud have 3 or more entries in buffer list */ | |
1618 | if (num_bde < 3) | |
1619 | goto err; | |
1620 | break; | |
1621 | } | |
1622 | case LPFC_PG_TYPE_INVALID: | |
1623 | default: | |
1624 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1625 | "9022 Unexpected protection group %i\n", | |
1626 | prot_group_type); | |
1627 | return 1; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | /* | |
1632 | * Finish initializing those IOCB fields that are dependent on the | |
1633 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
1634 | * reinitialized since all iocb memory resources are used many times | |
1635 | * for transmit, receive, and continuation bpl's. | |
1636 | */ | |
1637 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
1638 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
1639 | iocb_cmd->ulpBdeCount = 1; | |
1640 | iocb_cmd->ulpLe = 1; | |
1641 | ||
1642 | fcpdl = scsi_bufflen(scsi_cmnd); | |
1643 | ||
1644 | if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) { | |
1645 | /* | |
1646 | * We are in DIF Type 1 mode | |
1647 | * Every data block has a 8 byte DIF (trailer) | |
1648 | * attached to it. Must ajust FCP data length | |
1649 | */ | |
1650 | blksize = lpfc_cmd_blksize(scsi_cmnd); | |
1651 | diflen = (fcpdl / blksize) * 8; | |
1652 | fcpdl += diflen; | |
1653 | } | |
1654 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
1655 | ||
1656 | /* | |
1657 | * Due to difference in data length between DIF/non-DIF paths, | |
1658 | * we need to set word 4 of IOCB here | |
1659 | */ | |
1660 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
1661 | ||
dea3101e | 1662 | return 0; |
e2a0a9d6 JS |
1663 | err: |
1664 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1665 | "9023 Could not setup all needed BDE's" | |
1666 | "prot_group_type=%d, num_bde=%d\n", | |
1667 | prot_group_type, num_bde); | |
1668 | return 1; | |
1669 | } | |
1670 | ||
1671 | /* | |
1672 | * This function checks for BlockGuard errors detected by | |
1673 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
1674 | * sense buffer will be set accordingly, paired with | |
1675 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
1676 | * detected corruption. | |
1677 | * | |
1678 | * Returns: | |
1679 | * 0 - No error found | |
1680 | * 1 - BlockGuard error found | |
1681 | * -1 - Internal error (bad profile, ...etc) | |
1682 | */ | |
1683 | static int | |
1684 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
1685 | struct lpfc_iocbq *pIocbOut) | |
1686 | { | |
1687 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
1688 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
1689 | int ret = 0; | |
1690 | uint32_t bghm = bgf->bghm; | |
1691 | uint32_t bgstat = bgf->bgstat; | |
1692 | uint64_t failing_sector = 0; | |
1693 | ||
6a9c52cf JS |
1694 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd" |
1695 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
e2a0a9d6 | 1696 | "bgstat=0x%x bghm=0x%x\n", |
87b5c328 | 1697 | cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd), |
83096ebf | 1698 | blk_rq_sectors(cmd->request), bgstat, bghm); |
e2a0a9d6 JS |
1699 | |
1700 | spin_lock(&_dump_buf_lock); | |
1701 | if (!_dump_buf_done) { | |
6a9c52cf JS |
1702 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
1703 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 1704 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 1705 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
1706 | |
1707 | /* If we have a prot sgl, save the DIF buffer */ | |
1708 | if (lpfc_prot_group_type(phba, cmd) == | |
1709 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
1710 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
1711 | "Saving DIF for %u blocks to debugfs\n", | |
1712 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
1713 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
1714 | } |
1715 | ||
1716 | _dump_buf_done = 1; | |
1717 | } | |
1718 | spin_unlock(&_dump_buf_lock); | |
1719 | ||
1720 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
1721 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1722 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid" |
1723 | " BlockGuard profile. bgstat:0x%x\n", | |
1724 | bgstat); | |
e2a0a9d6 JS |
1725 | ret = (-1); |
1726 | goto out; | |
1727 | } | |
1728 | ||
1729 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
1730 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1731 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: " |
1732 | "Invalid BlockGuard DIF Block. bgstat:0x%x\n", | |
e2a0a9d6 JS |
1733 | bgstat); |
1734 | ret = (-1); | |
1735 | goto out; | |
1736 | } | |
1737 | ||
1738 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
1739 | ret = 1; | |
1740 | ||
1741 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1742 | 0x10, 0x1); | |
1c9fbafc | 1743 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1744 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1745 | phba->bg_guard_err_cnt++; | |
6a9c52cf JS |
1746 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1747 | "9055 BLKGRD: guard_tag error\n"); | |
e2a0a9d6 JS |
1748 | } |
1749 | ||
1750 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
1751 | ret = 1; | |
1752 | ||
1753 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1754 | 0x10, 0x3); | |
1c9fbafc | 1755 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1756 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1757 | ||
1758 | phba->bg_reftag_err_cnt++; | |
6a9c52cf JS |
1759 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1760 | "9056 BLKGRD: ref_tag error\n"); | |
e2a0a9d6 JS |
1761 | } |
1762 | ||
1763 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
1764 | ret = 1; | |
1765 | ||
1766 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1767 | 0x10, 0x2); | |
1c9fbafc | 1768 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1769 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1770 | ||
1771 | phba->bg_apptag_err_cnt++; | |
6a9c52cf JS |
1772 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1773 | "9061 BLKGRD: app_tag error\n"); | |
e2a0a9d6 JS |
1774 | } |
1775 | ||
1776 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
1777 | /* | |
1778 | * setup sense data descriptor 0 per SPC-4 as an information | |
1779 | * field, and put the failing LBA in it | |
1780 | */ | |
1781 | cmd->sense_buffer[8] = 0; /* Information */ | |
1782 | cmd->sense_buffer[9] = 0xa; /* Add. length */ | |
2344b5b6 | 1783 | bghm /= cmd->device->sector_size; |
e2a0a9d6 JS |
1784 | |
1785 | failing_sector = scsi_get_lba(cmd); | |
1786 | failing_sector += bghm; | |
1787 | ||
1788 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[10]); | |
1789 | } | |
1790 | ||
1791 | if (!ret) { | |
1792 | /* No error was reported - problem in FW? */ | |
1793 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1794 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1795 | "9057 BLKGRD: no errors reported!\n"); | |
e2a0a9d6 JS |
1796 | } |
1797 | ||
1798 | out: | |
1799 | return ret; | |
dea3101e JB |
1800 | } |
1801 | ||
da0436e9 JS |
1802 | /** |
1803 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
1804 | * @phba: The Hba for which this call is being executed. | |
1805 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1806 | * | |
1807 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
1808 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
1809 | * | |
1810 | * Return codes: | |
1811 | * 1 - Error | |
1812 | * 0 - Success | |
1813 | **/ | |
1814 | static int | |
1815 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
1816 | { | |
1817 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1818 | struct scatterlist *sgel = NULL; | |
1819 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1820 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
1821 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1822 | dma_addr_t physaddr; | |
1823 | uint32_t num_bde = 0; | |
1824 | uint32_t dma_len; | |
1825 | uint32_t dma_offset = 0; | |
1826 | int nseg; | |
1827 | ||
1828 | /* | |
1829 | * There are three possibilities here - use scatter-gather segment, use | |
1830 | * the single mapping, or neither. Start the lpfc command prep by | |
1831 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1832 | * data bde entry. | |
1833 | */ | |
1834 | if (scsi_sg_count(scsi_cmnd)) { | |
1835 | /* | |
1836 | * The driver stores the segment count returned from pci_map_sg | |
1837 | * because this a count of dma-mappings used to map the use_sg | |
1838 | * pages. They are not guaranteed to be the same for those | |
1839 | * architectures that implement an IOMMU. | |
1840 | */ | |
1841 | ||
1842 | nseg = scsi_dma_map(scsi_cmnd); | |
1843 | if (unlikely(!nseg)) | |
1844 | return 1; | |
1845 | sgl += 1; | |
1846 | /* clear the last flag in the fcp_rsp map entry */ | |
1847 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1848 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1849 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1850 | sgl += 1; | |
1851 | ||
1852 | lpfc_cmd->seg_cnt = nseg; | |
1853 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1854 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
1855 | " %s: Too many sg segments from " | |
1856 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
1857 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 JS |
1858 | lpfc_cmd->seg_cnt); |
1859 | scsi_dma_unmap(scsi_cmnd); | |
1860 | return 1; | |
1861 | } | |
1862 | ||
1863 | /* | |
1864 | * The driver established a maximum scatter-gather segment count | |
1865 | * during probe that limits the number of sg elements in any | |
1866 | * single scsi command. Just run through the seg_cnt and format | |
1867 | * the sge's. | |
1868 | * When using SLI-3 the driver will try to fit all the BDEs into | |
1869 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1870 | * does for SLI-2 mode. | |
1871 | */ | |
1872 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
1873 | physaddr = sg_dma_address(sgel); | |
1874 | dma_len = sg_dma_len(sgel); | |
1875 | bf_set(lpfc_sli4_sge_len, sgl, sg_dma_len(sgel)); | |
1876 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); | |
1877 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
1878 | if ((num_bde + 1) == nseg) | |
1879 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1880 | else | |
1881 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1882 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
1883 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1884 | sgl->word3 = cpu_to_le32(sgl->word3); | |
1885 | dma_offset += dma_len; | |
1886 | sgl++; | |
1887 | } | |
1888 | } else { | |
1889 | sgl += 1; | |
1890 | /* clear the last flag in the fcp_rsp map entry */ | |
1891 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1892 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1893 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1894 | } | |
1895 | ||
1896 | /* | |
1897 | * Finish initializing those IOCB fields that are dependent on the | |
1898 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
1899 | * explicitly reinitialized. | |
1900 | * all iocb memory resources are reused. | |
1901 | */ | |
1902 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
1903 | ||
1904 | /* | |
1905 | * Due to difference in data length between DIF/non-DIF paths, | |
1906 | * we need to set word 4 of IOCB here | |
1907 | */ | |
1908 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
1909 | return 0; | |
1910 | } | |
1911 | ||
3772a991 JS |
1912 | /** |
1913 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
1914 | * @phba: The Hba for which this call is being executed. | |
1915 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1916 | * | |
1917 | * This routine wraps the actual DMA mapping function pointer from the | |
1918 | * lpfc_hba struct. | |
1919 | * | |
1920 | * Return codes: | |
1921 | * 1 - Error | |
1922 | * 0 - Success | |
1923 | **/ | |
1924 | static inline int | |
1925 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
1926 | { | |
1927 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
1928 | } | |
1929 | ||
ea2151b4 | 1930 | /** |
3621a710 | 1931 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
1932 | * @phba: Pointer to hba context object. |
1933 | * @vport: Pointer to vport object. | |
1934 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
1935 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
1936 | * | |
1937 | * This function posts an event when there is a SCSI command reporting | |
1938 | * error from the scsi device. | |
1939 | **/ | |
1940 | static void | |
1941 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
1942 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
1943 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
1944 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
1945 | uint32_t resp_info = fcprsp->rspStatus2; | |
1946 | uint32_t scsi_status = fcprsp->rspStatus3; | |
1947 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
1948 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
1949 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
1950 | unsigned long flags; | |
1951 | ||
1952 | /* If there is queuefull or busy condition send a scsi event */ | |
1953 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
1954 | (cmnd->result == SAM_STAT_BUSY)) { | |
1955 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1956 | if (!fast_path_evt) | |
1957 | return; | |
1958 | fast_path_evt->un.scsi_evt.event_type = | |
1959 | FC_REG_SCSI_EVENT; | |
1960 | fast_path_evt->un.scsi_evt.subcategory = | |
1961 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
1962 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
1963 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
1964 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
1965 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1966 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
1967 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1968 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
1969 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
1970 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1971 | if (!fast_path_evt) | |
1972 | return; | |
1973 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
1974 | FC_REG_SCSI_EVENT; | |
1975 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
1976 | LPFC_EVENT_CHECK_COND; | |
1977 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
1978 | cmnd->device->lun; | |
1979 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
1980 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1981 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
1982 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1983 | fast_path_evt->un.check_cond_evt.sense_key = | |
1984 | cmnd->sense_buffer[2] & 0xf; | |
1985 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
1986 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
1987 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
1988 | fcpi_parm && | |
1989 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
1990 | ((scsi_status == SAM_STAT_GOOD) && | |
1991 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
1992 | /* | |
1993 | * If status is good or resid does not match with fcp_param and | |
1994 | * there is valid fcpi_parm, then there is a read_check error | |
1995 | */ | |
1996 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1997 | if (!fast_path_evt) | |
1998 | return; | |
1999 | fast_path_evt->un.read_check_error.header.event_type = | |
2000 | FC_REG_FABRIC_EVENT; | |
2001 | fast_path_evt->un.read_check_error.header.subcategory = | |
2002 | LPFC_EVENT_FCPRDCHKERR; | |
2003 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
2004 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2005 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
2006 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2007 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
2008 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
2009 | fast_path_evt->un.read_check_error.fcpiparam = | |
2010 | fcpi_parm; | |
2011 | } else | |
2012 | return; | |
2013 | ||
2014 | fast_path_evt->vport = vport; | |
2015 | spin_lock_irqsave(&phba->hbalock, flags); | |
2016 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
2017 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2018 | lpfc_worker_wake_up(phba); | |
2019 | return; | |
2020 | } | |
9bad7671 JS |
2021 | |
2022 | /** | |
f1126688 | 2023 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 2024 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
2025 | * @psb: The scsi buffer which is going to be un-mapped. |
2026 | * | |
2027 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 2028 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 2029 | **/ |
bcf4dbfa | 2030 | static void |
f1126688 | 2031 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
2032 | { |
2033 | /* | |
2034 | * There are only two special cases to consider. (1) the scsi command | |
2035 | * requested scatter-gather usage or (2) the scsi command allocated | |
2036 | * a request buffer, but did not request use_sg. There is a third | |
2037 | * case, but it does not require resource deallocation. | |
2038 | */ | |
a0b4f78f FT |
2039 | if (psb->seg_cnt > 0) |
2040 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
2041 | if (psb->prot_seg_cnt > 0) |
2042 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
2043 | scsi_prot_sg_count(psb->pCmd), | |
2044 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
2045 | } |
2046 | ||
9bad7671 | 2047 | /** |
3621a710 | 2048 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
2049 | * @vport: The virtual port for which this call is being executed. |
2050 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2051 | * @rsp_iocb: The response IOCB which contains FCP error. | |
2052 | * | |
2053 | * This routine is called to process response IOCB with status field | |
2054 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
2055 | * based upon SCSI and FCP error. | |
2056 | **/ | |
dea3101e | 2057 | static void |
2e0fef85 JS |
2058 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2059 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e JB |
2060 | { |
2061 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
2062 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
2063 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 2064 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e JB |
2065 | uint32_t resp_info = fcprsp->rspStatus2; |
2066 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 2067 | uint32_t *lp; |
dea3101e JB |
2068 | uint32_t host_status = DID_OK; |
2069 | uint32_t rsplen = 0; | |
c7743956 | 2070 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 2071 | |
ea2151b4 | 2072 | |
dea3101e JB |
2073 | /* |
2074 | * If this is a task management command, there is no | |
2075 | * scsi packet associated with this lpfc_cmd. The driver | |
2076 | * consumes it. | |
2077 | */ | |
2078 | if (fcpcmd->fcpCntl2) { | |
2079 | scsi_status = 0; | |
2080 | goto out; | |
2081 | } | |
2082 | ||
6a9c52cf JS |
2083 | if (resp_info & RSP_LEN_VALID) { |
2084 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
2085 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
2086 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
2087 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
2088 | "2719 Invalid response length: " | |
2089 | "tgt x%x lun x%x cmnd x%x rsplen x%x\n", | |
2090 | cmnd->device->id, | |
2091 | cmnd->device->lun, cmnd->cmnd[0], | |
2092 | rsplen); | |
2093 | host_status = DID_ERROR; | |
2094 | goto out; | |
2095 | } | |
2096 | } | |
2097 | ||
c7743956 JS |
2098 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
2099 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
2100 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
2101 | snslen = SCSI_SENSE_BUFFERSIZE; | |
2102 | ||
2103 | if (resp_info & RSP_LEN_VALID) | |
2104 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
2105 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
2106 | } | |
2107 | lp = (uint32_t *)cmnd->sense_buffer; | |
2108 | ||
2109 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
2110 | logit = LOG_FCP; | |
2111 | ||
e8b62011 | 2112 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 2113 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
2114 | "Data: x%x x%x x%x x%x x%x\n", |
2115 | cmnd->cmnd[0], scsi_status, | |
2116 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
2117 | be32_to_cpu(fcprsp->rspResId), | |
2118 | be32_to_cpu(fcprsp->rspSnsLen), | |
2119 | be32_to_cpu(fcprsp->rspRspLen), | |
2120 | fcprsp->rspInfo3); | |
dea3101e | 2121 | |
a0b4f78f | 2122 | scsi_set_resid(cmnd, 0); |
dea3101e | 2123 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 2124 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 2125 | |
e8b62011 | 2126 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2127 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
2128 | "residual %d Data: x%x x%x x%x\n", |
2129 | be32_to_cpu(fcpcmd->fcpDl), | |
2130 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
2131 | cmnd->underflow); | |
dea3101e | 2132 | |
7054a606 JS |
2133 | /* |
2134 | * If there is an under run check if under run reported by | |
2135 | * storage array is same as the under run reported by HBA. | |
2136 | * If this is not same, there is a dropped frame. | |
2137 | */ | |
2138 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
2139 | fcpi_parm && | |
a0b4f78f | 2140 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
2141 | lpfc_printf_vlog(vport, KERN_WARNING, |
2142 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 2143 | "9026 FCP Read Check Error " |
e8b62011 JS |
2144 | "and Underrun Data: x%x x%x x%x x%x\n", |
2145 | be32_to_cpu(fcpcmd->fcpDl), | |
2146 | scsi_get_resid(cmnd), fcpi_parm, | |
2147 | cmnd->cmnd[0]); | |
a0b4f78f | 2148 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
2149 | host_status = DID_ERROR; |
2150 | } | |
dea3101e JB |
2151 | /* |
2152 | * The cmnd->underflow is the minimum number of bytes that must | |
2153 | * be transfered for this command. Provided a sense condition | |
2154 | * is not present, make sure the actual amount transferred is at | |
2155 | * least the underflow value or fail. | |
2156 | */ | |
2157 | if (!(resp_info & SNS_LEN_VALID) && | |
2158 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
2159 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
2160 | < cmnd->underflow)) { | |
e8b62011 | 2161 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2162 | "9027 FCP command x%x residual " |
e8b62011 JS |
2163 | "underrun converted to error " |
2164 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 2165 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 2166 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e JB |
2167 | host_status = DID_ERROR; |
2168 | } | |
2169 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 2170 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2171 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 2172 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 2173 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e JB |
2174 | host_status = DID_ERROR; |
2175 | ||
2176 | /* | |
2177 | * Check SLI validation that all the transfer was actually done | |
2178 | * (fcpi_parm should be zero). Apply check only to reads. | |
2179 | */ | |
2180 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
2181 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 | 2182 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
e2a0a9d6 | 2183 | "9029 FCP Read Check Error Data: " |
e8b62011 JS |
2184 | "x%x x%x x%x x%x\n", |
2185 | be32_to_cpu(fcpcmd->fcpDl), | |
2186 | be32_to_cpu(fcprsp->rspResId), | |
2187 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 2188 | host_status = DID_ERROR; |
a0b4f78f | 2189 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e JB |
2190 | } |
2191 | ||
2192 | out: | |
2193 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 2194 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e JB |
2195 | } |
2196 | ||
9bad7671 | 2197 | /** |
3621a710 | 2198 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
2199 | * @phba: The Hba for which this call is being executed. |
2200 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 2201 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
2202 | * |
2203 | * This routine assigns scsi command result by looking into response IOCB | |
2204 | * status field appropriately. This routine handles QUEUE FULL condition as | |
2205 | * well by ramping down device queue depth. | |
2206 | **/ | |
dea3101e JB |
2207 | static void |
2208 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
2209 | struct lpfc_iocbq *pIocbOut) | |
2210 | { | |
2211 | struct lpfc_scsi_buf *lpfc_cmd = | |
2212 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 2213 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e JB |
2214 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
2215 | struct lpfc_nodelist *pnode = rdata->pnode; | |
2216 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 | 2217 | int result; |
a257bf90 | 2218 | struct scsi_device *tmp_sdev; |
5ffc266e | 2219 | int depth; |
fa61a54e | 2220 | unsigned long flags; |
ea2151b4 | 2221 | struct lpfc_fast_path_event *fast_path_evt; |
a257bf90 JS |
2222 | struct Scsi_Host *shost = cmd->device->host; |
2223 | uint32_t queue_depth, scsi_id; | |
dea3101e JB |
2224 | |
2225 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
2226 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
341af102 JS |
2227 | /* pick up SLI4 exhange busy status from HBA */ |
2228 | lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; | |
2229 | ||
109f6ed0 JS |
2230 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
2231 | atomic_dec(&pnode->cmd_pending); | |
dea3101e JB |
2232 | |
2233 | if (lpfc_cmd->status) { | |
2234 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
2235 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
2236 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
2237 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
2238 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
2239 | ||
e8b62011 | 2240 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2241 | "9030 FCP cmd x%x failed <%d/%d> " |
e8b62011 JS |
2242 | "status: x%x result: x%x Data: x%x x%x\n", |
2243 | cmd->cmnd[0], | |
2244 | cmd->device ? cmd->device->id : 0xffff, | |
2245 | cmd->device ? cmd->device->lun : 0xffff, | |
2246 | lpfc_cmd->status, lpfc_cmd->result, | |
2247 | pIocbOut->iocb.ulpContext, | |
2248 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e JB |
2249 | |
2250 | switch (lpfc_cmd->status) { | |
2251 | case IOSTAT_FCP_RSP_ERROR: | |
2252 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 2253 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e JB |
2254 | break; |
2255 | case IOSTAT_NPORT_BSY: | |
2256 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 2257 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
2258 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
2259 | if (!fast_path_evt) | |
2260 | break; | |
2261 | fast_path_evt->un.fabric_evt.event_type = | |
2262 | FC_REG_FABRIC_EVENT; | |
2263 | fast_path_evt->un.fabric_evt.subcategory = | |
2264 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
2265 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
2266 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
2267 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
2268 | &pnode->nlp_portname, | |
2269 | sizeof(struct lpfc_name)); | |
2270 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
2271 | &pnode->nlp_nodename, | |
2272 | sizeof(struct lpfc_name)); | |
2273 | } | |
2274 | fast_path_evt->vport = vport; | |
2275 | fast_path_evt->work_evt.evt = | |
2276 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
2277 | spin_lock_irqsave(&phba->hbalock, flags); | |
2278 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
2279 | &phba->work_list); | |
2280 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2281 | lpfc_worker_wake_up(phba); | |
dea3101e | 2282 | break; |
92d7f7b0 | 2283 | case IOSTAT_LOCAL_REJECT: |
d7c255b2 | 2284 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 2285 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
d7c255b2 | 2286 | lpfc_cmd->result == IOERR_ABORT_REQUESTED) { |
92d7f7b0 | 2287 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 2288 | break; |
e2a0a9d6 JS |
2289 | } |
2290 | ||
2291 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || | |
2292 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
2293 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
2294 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
2295 | /* | |
2296 | * This is a response for a BG enabled | |
2297 | * cmd. Parse BG error | |
2298 | */ | |
2299 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
2300 | pIocbOut); | |
2301 | break; | |
2302 | } else { | |
2303 | lpfc_printf_vlog(vport, KERN_WARNING, | |
2304 | LOG_BG, | |
2305 | "9031 non-zero BGSTAT " | |
6a9c52cf | 2306 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
2307 | } |
2308 | } | |
2309 | ||
2310 | /* else: fall through */ | |
dea3101e JB |
2311 | default: |
2312 | cmd->result = ScsiResult(DID_ERROR, 0); | |
2313 | break; | |
2314 | } | |
2315 | ||
58da1ffb | 2316 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 2317 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
2318 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
2319 | SAM_STAT_BUSY); | |
dea3101e JB |
2320 | } else { |
2321 | cmd->result = ScsiResult(DID_OK, 0); | |
2322 | } | |
2323 | ||
2324 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
2325 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
2326 | ||
e8b62011 JS |
2327 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2328 | "0710 Iodone <%d/%d> cmd %p, error " | |
2329 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
2330 | cmd->device->id, cmd->device->lun, cmd, | |
2331 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
2332 | scsi_get_resid(cmd)); | |
dea3101e JB |
2333 | } |
2334 | ||
ea2151b4 | 2335 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 2336 | result = cmd->result; |
977b5a0a JS |
2337 | if (vport->cfg_max_scsicmpl_time && |
2338 | time_after(jiffies, lpfc_cmd->start_time + | |
2339 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 2340 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
2341 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
2342 | if (pnode->cmd_qdepth > | |
2343 | atomic_read(&pnode->cmd_pending) && | |
2344 | (atomic_read(&pnode->cmd_pending) > | |
2345 | LPFC_MIN_TGT_QDEPTH) && | |
2346 | ((cmd->cmnd[0] == READ_10) || | |
2347 | (cmd->cmnd[0] == WRITE_10))) | |
2348 | pnode->cmd_qdepth = | |
2349 | atomic_read(&pnode->cmd_pending); | |
2350 | ||
2351 | pnode->last_change_time = jiffies; | |
2352 | } | |
a257bf90 | 2353 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 JS |
2354 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
2355 | if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) && | |
977b5a0a | 2356 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 2357 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 2358 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
2359 | pnode->cmd_qdepth += pnode->cmd_qdepth * |
2360 | LPFC_TGTQ_RAMPUP_PCENT / 100; | |
2361 | if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH) | |
2362 | pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH; | |
2363 | pnode->last_change_time = jiffies; | |
a257bf90 | 2364 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 2365 | } |
977b5a0a JS |
2366 | } |
2367 | ||
1dcb58e5 | 2368 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
2369 | |
2370 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
2371 | queue_depth = cmd->device->queue_depth; | |
2372 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
2373 | cmd->scsi_done(cmd); |
2374 | ||
b808608b | 2375 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
2376 | /* |
2377 | * If there is a thread waiting for command completion | |
2378 | * wake up the thread. | |
2379 | */ | |
a257bf90 | 2380 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2381 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2382 | if (lpfc_cmd->waitq) |
2383 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2384 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
2385 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
2386 | return; | |
2387 | } | |
2388 | ||
92d7f7b0 | 2389 | if (!result) |
a257bf90 | 2390 | lpfc_rampup_queue_depth(vport, queue_depth); |
92d7f7b0 | 2391 | |
445cf4f4 JSEC |
2392 | /* |
2393 | * Check for queue full. If the lun is reporting queue full, then | |
2394 | * back off the lun queue depth to prevent target overloads. | |
2395 | */ | |
58da1ffb JS |
2396 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
2397 | NLP_CHK_NODE_ACT(pnode)) { | |
a257bf90 JS |
2398 | shost_for_each_device(tmp_sdev, shost) { |
2399 | if (tmp_sdev->id != scsi_id) | |
445cf4f4 JSEC |
2400 | continue; |
2401 | depth = scsi_track_queue_full(tmp_sdev, | |
5ffc266e JS |
2402 | tmp_sdev->queue_depth-1); |
2403 | if (depth <= 0) | |
2404 | continue; | |
e8b62011 JS |
2405 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2406 | "0711 detected queue full - lun queue " | |
2407 | "depth adjusted to %d.\n", depth); | |
ea2151b4 | 2408 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
5ffc266e JS |
2409 | pnode, |
2410 | tmp_sdev->lun, | |
2411 | depth+1, depth); | |
445cf4f4 JSEC |
2412 | } |
2413 | } | |
2414 | ||
fa61a54e JS |
2415 | /* |
2416 | * If there is a thread waiting for command completion | |
2417 | * wake up the thread. | |
2418 | */ | |
a257bf90 | 2419 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2420 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2421 | if (lpfc_cmd->waitq) |
2422 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2423 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 2424 | |
0bd4ca25 | 2425 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
2426 | } |
2427 | ||
34b02dcd | 2428 | /** |
3621a710 | 2429 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
2430 | * @data: A pointer to the immediate command data portion of the IOCB. |
2431 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
2432 | * | |
2433 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
2434 | * byte swapping the data to big endian format for transmission on the wire. | |
2435 | **/ | |
2436 | static void | |
2437 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
2438 | { | |
2439 | int i, j; | |
2440 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
2441 | i += sizeof(uint32_t), j++) { | |
2442 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
2443 | } | |
2444 | } | |
2445 | ||
9bad7671 | 2446 | /** |
f1126688 | 2447 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
2448 | * @vport: The virtual port for which this call is being executed. |
2449 | * @lpfc_cmd: The scsi command which needs to send. | |
2450 | * @pnode: Pointer to lpfc_nodelist. | |
2451 | * | |
2452 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 2453 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 2454 | **/ |
dea3101e | 2455 | static void |
f1126688 | 2456 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 2457 | struct lpfc_nodelist *pnode) |
dea3101e | 2458 | { |
2e0fef85 | 2459 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
2460 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
2461 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2462 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2463 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
2464 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 2465 | char tag[2]; |
dea3101e | 2466 | |
58da1ffb JS |
2467 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
2468 | return; | |
2469 | ||
dea3101e | 2470 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
2471 | /* clear task management bits */ |
2472 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 2473 | |
91886523 JSEC |
2474 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
2475 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e JB |
2476 | |
2477 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
2478 | ||
7e2b19fb JS |
2479 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
2480 | switch (tag[0]) { | |
dea3101e JB |
2481 | case HEAD_OF_QUEUE_TAG: |
2482 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
2483 | break; | |
2484 | case ORDERED_QUEUE_TAG: | |
2485 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
2486 | break; | |
2487 | default: | |
2488 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
2489 | break; | |
2490 | } | |
2491 | } else | |
2492 | fcp_cmnd->fcpCntl1 = 0; | |
2493 | ||
2494 | /* | |
2495 | * There are three possibilities here - use scatter-gather segment, use | |
2496 | * the single mapping, or neither. Start the lpfc command prep by | |
2497 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2498 | * data bde entry. | |
2499 | */ | |
a0b4f78f | 2500 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
2501 | if (datadir == DMA_TO_DEVICE) { |
2502 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
3772a991 JS |
2503 | if (phba->sli_rev < LPFC_SLI_REV4) { |
2504 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2505 | iocb_cmd->ulpPU = 0; | |
2506 | } else | |
2507 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e JB |
2508 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
2509 | phba->fc4OutputRequests++; | |
2510 | } else { | |
2511 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
2512 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e JB |
2513 | fcp_cmnd->fcpCntl3 = READ_DATA; |
2514 | phba->fc4InputRequests++; | |
2515 | } | |
2516 | } else { | |
2517 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
2518 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2519 | iocb_cmd->ulpPU = 0; | |
2520 | fcp_cmnd->fcpCntl3 = 0; | |
2521 | phba->fc4ControlRequests++; | |
2522 | } | |
e2a0a9d6 JS |
2523 | if (phba->sli_rev == 3 && |
2524 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2525 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e JB |
2526 | /* |
2527 | * Finish initializing those IOCB fields that are independent | |
2528 | * of the scsi_cmnd request_buffer | |
2529 | */ | |
2530 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
2531 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
2532 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
2533 | else |
2534 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e JB |
2535 | |
2536 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
2537 | piocbq->context1 = lpfc_cmd; | |
2538 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
2539 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 2540 | piocbq->vport = vport; |
dea3101e JB |
2541 | } |
2542 | ||
da0436e9 | 2543 | /** |
f1126688 | 2544 | * lpfc_scsi_prep_task_mgmt_cmnd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
2545 | * @vport: The virtual port for which this call is being executed. |
2546 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2547 | * @lun: Logical unit number. | |
2548 | * @task_mgmt_cmd: SCSI task management command. | |
2549 | * | |
3772a991 JS |
2550 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
2551 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
2552 | * |
2553 | * Return codes: | |
2554 | * 0 - Error | |
2555 | * 1 - Success | |
2556 | **/ | |
dea3101e | 2557 | static int |
f1126688 | 2558 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 2559 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 2560 | unsigned int lun, |
dea3101e JB |
2561 | uint8_t task_mgmt_cmd) |
2562 | { | |
dea3101e JB |
2563 | struct lpfc_iocbq *piocbq; |
2564 | IOCB_t *piocb; | |
2565 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 2566 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e JB |
2567 | struct lpfc_nodelist *ndlp = rdata->pnode; |
2568 | ||
58da1ffb JS |
2569 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
2570 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 2571 | return 0; |
dea3101e | 2572 | |
dea3101e | 2573 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
2574 | piocbq->vport = vport; |
2575 | ||
dea3101e JB |
2576 | piocb = &piocbq->iocb; |
2577 | ||
2578 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
2579 | /* Clear out any old data in the FCP command area */ |
2580 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
2581 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 2582 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
2583 | if (vport->phba->sli_rev == 3 && |
2584 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2585 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 2586 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e JB |
2587 | piocb->ulpContext = ndlp->nlp_rpi; |
2588 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
2589 | piocb->ulpFCP2Rcvy = 1; | |
2590 | } | |
2591 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
2592 | ||
2593 | /* ulpTimeout is only one byte */ | |
2594 | if (lpfc_cmd->timeout > 0xff) { | |
2595 | /* | |
2596 | * Do not timeout the command at the firmware level. | |
2597 | * The driver will provide the timeout mechanism. | |
2598 | */ | |
2599 | piocb->ulpTimeout = 0; | |
f1126688 | 2600 | } else |
dea3101e | 2601 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 2602 | |
f1126688 JS |
2603 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
2604 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 2605 | |
f1126688 | 2606 | return 1; |
3772a991 JS |
2607 | } |
2608 | ||
2609 | /** | |
2610 | * lpfc_scsi_api_table_setup - Set up scsi api fucntion jump table | |
2611 | * @phba: The hba struct for which this call is being executed. | |
2612 | * @dev_grp: The HBA PCI-Device group number. | |
2613 | * | |
2614 | * This routine sets up the SCSI interface API function jump table in @phba | |
2615 | * struct. | |
2616 | * Returns: 0 - success, -ENODEV - failure. | |
2617 | **/ | |
2618 | int | |
2619 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
2620 | { | |
2621 | ||
f1126688 JS |
2622 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
2623 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
2624 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; | |
2625 | ||
3772a991 JS |
2626 | switch (dev_grp) { |
2627 | case LPFC_PCI_DEV_LP: | |
2628 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
2629 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
3772a991 JS |
2630 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
2631 | break; | |
da0436e9 JS |
2632 | case LPFC_PCI_DEV_OC: |
2633 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
2634 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
da0436e9 JS |
2635 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
2636 | break; | |
3772a991 JS |
2637 | default: |
2638 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
2639 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
2640 | dev_grp); | |
2641 | return -ENODEV; | |
2642 | break; | |
2643 | } | |
2644 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; | |
2645 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; | |
2646 | return 0; | |
2647 | } | |
2648 | ||
9bad7671 | 2649 | /** |
3621a710 | 2650 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
2651 | * @phba: The Hba for which this call is being executed. |
2652 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
2653 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
2654 | * | |
2655 | * This routine is IOCB completion routine for device reset and target reset | |
2656 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
2657 | **/ | |
7054a606 JS |
2658 | static void |
2659 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
2660 | struct lpfc_iocbq *cmdiocbq, | |
2661 | struct lpfc_iocbq *rspiocbq) | |
2662 | { | |
2663 | struct lpfc_scsi_buf *lpfc_cmd = | |
2664 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
2665 | if (lpfc_cmd) | |
2666 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2667 | return; | |
2668 | } | |
2669 | ||
9bad7671 | 2670 | /** |
3621a710 | 2671 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
2672 | * @host: The scsi host for which this call is being executed. |
2673 | * | |
2674 | * This routine provides module information about hba. | |
2675 | * | |
2676 | * Reutrn code: | |
2677 | * Pointer to char - Success. | |
2678 | **/ | |
dea3101e JB |
2679 | const char * |
2680 | lpfc_info(struct Scsi_Host *host) | |
2681 | { | |
2e0fef85 JS |
2682 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
2683 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
2684 | int len; |
2685 | static char lpfcinfobuf[384]; | |
2686 | ||
2687 | memset(lpfcinfobuf,0,384); | |
2688 | if (phba && phba->pcidev){ | |
2689 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
2690 | len = strlen(lpfcinfobuf); | |
2691 | snprintf(lpfcinfobuf + len, | |
2692 | 384-len, | |
2693 | " on PCI bus %02x device %02x irq %d", | |
2694 | phba->pcidev->bus->number, | |
2695 | phba->pcidev->devfn, | |
2696 | phba->pcidev->irq); | |
2697 | len = strlen(lpfcinfobuf); | |
2698 | if (phba->Port[0]) { | |
2699 | snprintf(lpfcinfobuf + len, | |
2700 | 384-len, | |
2701 | " port %s", | |
2702 | phba->Port); | |
2703 | } | |
65467b6b JS |
2704 | len = strlen(lpfcinfobuf); |
2705 | if (phba->sli4_hba.link_state.logical_speed) { | |
2706 | snprintf(lpfcinfobuf + len, | |
2707 | 384-len, | |
2708 | " Logical Link Speed: %d Mbps", | |
2709 | phba->sli4_hba.link_state.logical_speed * 10); | |
2710 | } | |
dea3101e JB |
2711 | } |
2712 | return lpfcinfobuf; | |
2713 | } | |
2714 | ||
9bad7671 | 2715 | /** |
3621a710 | 2716 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
2717 | * @phba: The Hba for which this call is being executed. |
2718 | * | |
2719 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
2720 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
2721 | **/ | |
875fbdfe JSEC |
2722 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
2723 | { | |
2724 | unsigned long poll_tmo_expires = | |
2725 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
2726 | ||
2727 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
2728 | mod_timer(&phba->fcp_poll_timer, | |
2729 | poll_tmo_expires); | |
2730 | } | |
2731 | ||
9bad7671 | 2732 | /** |
3621a710 | 2733 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
2734 | * @phba: The Hba for which this call is being executed. |
2735 | * | |
2736 | * This routine starts the fcp_poll_timer of @phba. | |
2737 | **/ | |
875fbdfe JSEC |
2738 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
2739 | { | |
2740 | lpfc_poll_rearm_timer(phba); | |
2741 | } | |
2742 | ||
9bad7671 | 2743 | /** |
3621a710 | 2744 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
2745 | * @ptr: Map to lpfc_hba data structure pointer. |
2746 | * | |
2747 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
2748 | * and FCP Ring interrupt is disable. | |
2749 | **/ | |
2750 | ||
875fbdfe JSEC |
2751 | void lpfc_poll_timeout(unsigned long ptr) |
2752 | { | |
2e0fef85 | 2753 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
2754 | |
2755 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
2756 | lpfc_sli_handle_fast_ring_event(phba, |
2757 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
2758 | ||
875fbdfe JSEC |
2759 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
2760 | lpfc_poll_rearm_timer(phba); | |
2761 | } | |
875fbdfe JSEC |
2762 | } |
2763 | ||
9bad7671 | 2764 | /** |
3621a710 | 2765 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
2766 | * @cmnd: Pointer to scsi_cmnd data structure. |
2767 | * @done: Pointer to done routine. | |
2768 | * | |
2769 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
2770 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
2771 | * The @done callback is invoked after driver finished processing the command. | |
2772 | * | |
2773 | * Return value : | |
2774 | * 0 - Success | |
2775 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
2776 | **/ | |
dea3101e JB |
2777 | static int |
2778 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
2779 | { | |
2e0fef85 JS |
2780 | struct Scsi_Host *shost = cmnd->device->host; |
2781 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2782 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2783 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1c6f4ef5 | 2784 | struct lpfc_nodelist *ndlp; |
0bd4ca25 | 2785 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 2786 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 2787 | int err; |
dea3101e | 2788 | |
19a7b4ae JSEC |
2789 | err = fc_remote_port_chkready(rport); |
2790 | if (err) { | |
2791 | cmnd->result = err; | |
dea3101e JB |
2792 | goto out_fail_command; |
2793 | } | |
1c6f4ef5 | 2794 | ndlp = rdata->pnode; |
dea3101e | 2795 | |
e2a0a9d6 JS |
2796 | if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
2797 | scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { | |
2798 | ||
6a9c52cf JS |
2799 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2800 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
2801 | " op:%02x str=%s without registering for" | |
2802 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
2803 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
2804 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2805 | goto out_fail_command; | |
2806 | } | |
2807 | ||
dea3101e | 2808 | /* |
19a7b4ae JSEC |
2809 | * Catch race where our node has transitioned, but the |
2810 | * transport is still transitioning. | |
dea3101e | 2811 | */ |
b522d7d4 JS |
2812 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
2813 | cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); | |
2814 | goto out_fail_command; | |
2815 | } | |
109f6ed0 JS |
2816 | if (vport->cfg_max_scsicmpl_time && |
2817 | (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)) | |
977b5a0a | 2818 | goto out_host_busy; |
a93ce024 | 2819 | |
ed957684 | 2820 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 2821 | if (lpfc_cmd == NULL) { |
eaf15d5b | 2822 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 2823 | |
e8b62011 JS |
2824 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2825 | "0707 driver's buffer pool is empty, " | |
2826 | "IO busied\n"); | |
dea3101e JB |
2827 | goto out_host_busy; |
2828 | } | |
2829 | ||
2830 | /* | |
2831 | * Store the midlayer's command structure for the completion phase | |
2832 | * and complete the command initialization. | |
2833 | */ | |
2834 | lpfc_cmd->pCmd = cmnd; | |
2835 | lpfc_cmd->rdata = rdata; | |
2836 | lpfc_cmd->timeout = 0; | |
977b5a0a | 2837 | lpfc_cmd->start_time = jiffies; |
dea3101e JB |
2838 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
2839 | cmnd->scsi_done = done; | |
2840 | ||
e2a0a9d6 | 2841 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf JS |
2842 | if (vport->phba->cfg_enable_bg) { |
2843 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 JS |
2844 | "9033 BLKGRD: rcvd protected cmd:%02x op:%02x " |
2845 | "str=%s\n", | |
2846 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2847 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
6a9c52cf | 2848 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
e2a0a9d6 | 2849 | "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x " |
e4e74273 | 2850 | "%02x %02x %02x %02x %02x\n", |
e2a0a9d6 JS |
2851 | cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], |
2852 | cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], | |
2853 | cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], | |
2854 | cmnd->cmnd[9]); | |
6a9c52cf JS |
2855 | if (cmnd->cmnd[0] == READ_10) |
2856 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2857 | "9035 BLKGRD: READ @ sector %llu, " |
83096ebf TH |
2858 | "count %u\n", |
2859 | (unsigned long long)scsi_get_lba(cmnd), | |
2860 | blk_rq_sectors(cmnd->request)); | |
6a9c52cf JS |
2861 | else if (cmnd->cmnd[0] == WRITE_10) |
2862 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2863 | "9036 BLKGRD: WRITE @ sector %llu, " |
83096ebf | 2864 | "count %u cmd=%p\n", |
87b5c328 | 2865 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 2866 | blk_rq_sectors(cmnd->request), |
e2a0a9d6 | 2867 | cmnd); |
6a9c52cf | 2868 | } |
e2a0a9d6 JS |
2869 | |
2870 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2871 | } else { | |
6a9c52cf | 2872 | if (vport->phba->cfg_enable_bg) { |
e2a0a9d6 | 2873 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
6a9c52cf JS |
2874 | "9038 BLKGRD: rcvd unprotected cmd:" |
2875 | "%02x op:%02x str=%s\n", | |
2876 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2877 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2878 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2879 | "9039 BLKGRD: CDB: %02x %02x %02x " | |
2880 | "%02x %02x %02x %02x %02x %02x %02x\n", | |
2881 | cmnd->cmnd[0], cmnd->cmnd[1], | |
2882 | cmnd->cmnd[2], cmnd->cmnd[3], | |
2883 | cmnd->cmnd[4], cmnd->cmnd[5], | |
2884 | cmnd->cmnd[6], cmnd->cmnd[7], | |
2885 | cmnd->cmnd[8], cmnd->cmnd[9]); | |
2886 | if (cmnd->cmnd[0] == READ_10) | |
2887 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2888 | "9040 dbg: READ @ sector %llu, " | |
2889 | "count %u\n", | |
2890 | (unsigned long long)scsi_get_lba(cmnd), | |
83096ebf | 2891 | blk_rq_sectors(cmnd->request)); |
6a9c52cf JS |
2892 | else if (cmnd->cmnd[0] == WRITE_10) |
2893 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2894 | "9041 dbg: WRITE @ sector %llu, " |
83096ebf | 2895 | "count %u cmd=%p\n", |
87b5c328 | 2896 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 2897 | blk_rq_sectors(cmnd->request), cmnd); |
6a9c52cf JS |
2898 | else |
2899 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2900 | "9042 dbg: parser not implemented\n"); |
6a9c52cf | 2901 | } |
e2a0a9d6 JS |
2902 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
2903 | } | |
2904 | ||
dea3101e JB |
2905 | if (err) |
2906 | goto out_host_busy_free_buf; | |
2907 | ||
2e0fef85 | 2908 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 2909 | |
977b5a0a | 2910 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 2911 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 2912 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
2913 | if (err) { |
2914 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 2915 | goto out_host_busy_free_buf; |
eaf15d5b | 2916 | } |
875fbdfe | 2917 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
2918 | spin_unlock(shost->host_lock); |
2919 | lpfc_sli_handle_fast_ring_event(phba, | |
2920 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
2921 | ||
2922 | spin_lock(shost->host_lock); | |
875fbdfe JSEC |
2923 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
2924 | lpfc_poll_rearm_timer(phba); | |
2925 | } | |
2926 | ||
dea3101e JB |
2927 | return 0; |
2928 | ||
2929 | out_host_busy_free_buf: | |
bcf4dbfa | 2930 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 2931 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
2932 | out_host_busy: |
2933 | return SCSI_MLQUEUE_HOST_BUSY; | |
2934 | ||
2935 | out_fail_command: | |
2936 | done(cmnd); | |
2937 | return 0; | |
2938 | } | |
2939 | ||
9bad7671 | 2940 | /** |
3621a710 | 2941 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
2942 | * @cmnd: Pointer to scsi_cmnd data structure. |
2943 | * | |
2944 | * This routine aborts @cmnd pending in base driver. | |
2945 | * | |
2946 | * Return code : | |
2947 | * 0x2003 - Error | |
2948 | * 0x2002 - Success | |
2949 | **/ | |
dea3101e | 2950 | static int |
63c59c3b | 2951 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 2952 | { |
2e0fef85 JS |
2953 | struct Scsi_Host *shost = cmnd->device->host; |
2954 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2955 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
2956 | struct lpfc_iocbq *iocb; |
2957 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 2958 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 2959 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 2960 | int ret = SUCCESS; |
fa61a54e | 2961 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 2962 | |
65d430fa | 2963 | fc_block_scsi_eh(cmnd); |
0bd4ca25 JSEC |
2964 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
2965 | BUG_ON(!lpfc_cmd); | |
dea3101e | 2966 | |
0bd4ca25 JSEC |
2967 | /* |
2968 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
2969 | * points to a different SCSI command, then the driver has | |
2970 | * already completed this command, but the midlayer did not | |
2971 | * see the completion before the eh fired. Just return | |
2972 | * SUCCESS. | |
2973 | */ | |
2974 | iocb = &lpfc_cmd->cur_iocbq; | |
2975 | if (lpfc_cmd->pCmd != cmnd) | |
2976 | goto out; | |
dea3101e | 2977 | |
0bd4ca25 | 2978 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 2979 | |
0bd4ca25 JSEC |
2980 | abtsiocb = lpfc_sli_get_iocbq(phba); |
2981 | if (abtsiocb == NULL) { | |
2982 | ret = FAILED; | |
dea3101e JB |
2983 | goto out; |
2984 | } | |
2985 | ||
dea3101e | 2986 | /* |
0bd4ca25 JSEC |
2987 | * The scsi command can not be in txq and it is in flight because the |
2988 | * pCmd is still pointig at the SCSI command we have to abort. There | |
2989 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 2990 | */ |
dea3101e | 2991 | |
0bd4ca25 JSEC |
2992 | cmd = &iocb->iocb; |
2993 | icmd = &abtsiocb->iocb; | |
2994 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
2995 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
2996 | if (phba->sli_rev == LPFC_SLI_REV4) |
2997 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
2998 | else | |
2999 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 3000 | |
0bd4ca25 JSEC |
3001 | icmd->ulpLe = 1; |
3002 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
3003 | |
3004 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
3005 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
341af102 | 3006 | abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
5ffc266e | 3007 | |
2e0fef85 | 3008 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
3009 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
3010 | else | |
3011 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 3012 | |
0bd4ca25 | 3013 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 3014 | abtsiocb->vport = vport; |
3772a991 JS |
3015 | if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) == |
3016 | IOCB_ERROR) { | |
0bd4ca25 JSEC |
3017 | lpfc_sli_release_iocbq(phba, abtsiocb); |
3018 | ret = FAILED; | |
3019 | goto out; | |
3020 | } | |
dea3101e | 3021 | |
875fbdfe | 3022 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
3023 | lpfc_sli_handle_fast_ring_event(phba, |
3024 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 3025 | |
fa61a54e | 3026 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 3027 | /* Wait for abort to complete */ |
fa61a54e JS |
3028 | wait_event_timeout(waitq, |
3029 | (lpfc_cmd->pCmd != cmnd), | |
3030 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 3031 | |
fa61a54e JS |
3032 | spin_lock_irq(shost->host_lock); |
3033 | lpfc_cmd->waitq = NULL; | |
3034 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 3035 | |
0bd4ca25 JSEC |
3036 | if (lpfc_cmd->pCmd == cmnd) { |
3037 | ret = FAILED; | |
e8b62011 JS |
3038 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3039 | "0748 abort handler timed out waiting " | |
3040 | "for abort to complete: ret %#x, ID %d, " | |
3041 | "LUN %d, snum %#lx\n", | |
3042 | ret, cmnd->device->id, cmnd->device->lun, | |
3043 | cmnd->serial_number); | |
dea3101e JB |
3044 | } |
3045 | ||
3046 | out: | |
e8b62011 JS |
3047 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3048 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
3049 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
3050 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 3051 | return ret; |
8fa728a2 JG |
3052 | } |
3053 | ||
bbb9d180 JS |
3054 | static char * |
3055 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
3056 | { | |
3057 | switch (task_mgmt_cmd) { | |
3058 | case FCP_ABORT_TASK_SET: | |
3059 | return "ABORT_TASK_SET"; | |
3060 | case FCP_CLEAR_TASK_SET: | |
3061 | return "FCP_CLEAR_TASK_SET"; | |
3062 | case FCP_BUS_RESET: | |
3063 | return "FCP_BUS_RESET"; | |
3064 | case FCP_LUN_RESET: | |
3065 | return "FCP_LUN_RESET"; | |
3066 | case FCP_TARGET_RESET: | |
3067 | return "FCP_TARGET_RESET"; | |
3068 | case FCP_CLEAR_ACA: | |
3069 | return "FCP_CLEAR_ACA"; | |
3070 | case FCP_TERMINATE_TASK: | |
3071 | return "FCP_TERMINATE_TASK"; | |
3072 | default: | |
3073 | return "unknown"; | |
3074 | } | |
3075 | } | |
3076 | ||
9bad7671 | 3077 | /** |
bbb9d180 JS |
3078 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
3079 | * @vport: The virtual port for which this call is being executed. | |
3080 | * @rdata: Pointer to remote port local data | |
3081 | * @tgt_id: Target ID of remote device. | |
3082 | * @lun_id: Lun number for the TMF | |
3083 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 3084 | * |
bbb9d180 JS |
3085 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
3086 | * a remote port. | |
9bad7671 | 3087 | * |
bbb9d180 JS |
3088 | * Return Code: |
3089 | * 0x2003 - Error | |
3090 | * 0x2002 - Success. | |
9bad7671 | 3091 | **/ |
dea3101e | 3092 | static int |
bbb9d180 JS |
3093 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
3094 | unsigned tgt_id, unsigned int lun_id, | |
3095 | uint8_t task_mgmt_cmd) | |
dea3101e | 3096 | { |
2e0fef85 | 3097 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 3098 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
3099 | struct lpfc_iocbq *iocbq; |
3100 | struct lpfc_iocbq *iocbqrsp; | |
3101 | int ret; | |
915caaaf | 3102 | int status; |
dea3101e | 3103 | |
bbb9d180 | 3104 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
915caaaf | 3105 | return FAILED; |
bbb9d180 | 3106 | |
2e0fef85 | 3107 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 3108 | if (lpfc_cmd == NULL) |
915caaaf | 3109 | return FAILED; |
dea3101e | 3110 | lpfc_cmd->timeout = 60; |
0b18ac42 | 3111 | lpfc_cmd->rdata = rdata; |
dea3101e | 3112 | |
bbb9d180 JS |
3113 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
3114 | task_mgmt_cmd); | |
915caaaf JS |
3115 | if (!status) { |
3116 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3117 | return FAILED; | |
3118 | } | |
dea3101e | 3119 | |
bbb9d180 | 3120 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 3121 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
3122 | if (iocbqrsp == NULL) { |
3123 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3124 | return FAILED; | |
3125 | } | |
bbb9d180 | 3126 | |
e8b62011 | 3127 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
bbb9d180 JS |
3128 | "0702 Issue %s to TGT %d LUN %d " |
3129 | "rpi x%x nlp_flag x%x\n", | |
3130 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, | |
3131 | rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
3132 | ||
3772a991 | 3133 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 3134 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
bbb9d180 JS |
3135 | if (status != IOCB_SUCCESS) { |
3136 | if (status == IOCB_TIMEDOUT) { | |
3137 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
3138 | ret = TIMEOUT_ERROR; | |
3139 | } else | |
915caaaf | 3140 | ret = FAILED; |
bbb9d180 JS |
3141 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
3142 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3143 | "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n", | |
3144 | lpfc_taskmgmt_name(task_mgmt_cmd), | |
3145 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
915caaaf | 3146 | iocbqrsp->iocb.un.ulpWord[4]); |
bbb9d180 JS |
3147 | } else |
3148 | ret = SUCCESS; | |
3149 | ||
6175c02a | 3150 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
3151 | |
3152 | if (ret != TIMEOUT_ERROR) | |
3153 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3154 | ||
3155 | return ret; | |
3156 | } | |
3157 | ||
3158 | /** | |
3159 | * lpfc_chk_tgt_mapped - | |
3160 | * @vport: The virtual port to check on | |
3161 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3162 | * | |
3163 | * This routine delays until the scsi target (aka rport) for the | |
3164 | * command exists (is present and logged in) or we declare it non-existent. | |
3165 | * | |
3166 | * Return code : | |
3167 | * 0x2003 - Error | |
3168 | * 0x2002 - Success | |
3169 | **/ | |
3170 | static int | |
3171 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
3172 | { | |
3173 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3174 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3175 | unsigned long later; |
3176 | ||
1c6f4ef5 JS |
3177 | if (!rdata) { |
3178 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
3179 | "0797 Tgt Map rport failure: rdata x%p\n", rdata); | |
3180 | return FAILED; | |
3181 | } | |
3182 | pnode = rdata->pnode; | |
bbb9d180 JS |
3183 | /* |
3184 | * If target is not in a MAPPED state, delay until | |
3185 | * target is rediscovered or devloss timeout expires. | |
3186 | */ | |
3187 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
3188 | while (time_after(later, jiffies)) { | |
3189 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
3190 | return FAILED; | |
3191 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
3192 | return SUCCESS; | |
3193 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
3194 | rdata = cmnd->device->hostdata; | |
3195 | if (!rdata) | |
3196 | return FAILED; | |
3197 | pnode = rdata->pnode; | |
3198 | } | |
3199 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
3200 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
3201 | return FAILED; | |
3202 | return SUCCESS; | |
3203 | } | |
3204 | ||
3205 | /** | |
3206 | * lpfc_reset_flush_io_context - | |
3207 | * @vport: The virtual port (scsi_host) for the flush context | |
3208 | * @tgt_id: If aborting by Target contect - specifies the target id | |
3209 | * @lun_id: If aborting by Lun context - specifies the lun id | |
3210 | * @context: specifies the context level to flush at. | |
3211 | * | |
3212 | * After a reset condition via TMF, we need to flush orphaned i/o | |
3213 | * contexts from the adapter. This routine aborts any contexts | |
3214 | * outstanding, then waits for their completions. The wait is | |
3215 | * bounded by devloss_tmo though. | |
3216 | * | |
3217 | * Return code : | |
3218 | * 0x2003 - Error | |
3219 | * 0x2002 - Success | |
3220 | **/ | |
3221 | static int | |
3222 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
3223 | uint64_t lun_id, lpfc_ctx_cmd context) | |
3224 | { | |
3225 | struct lpfc_hba *phba = vport->phba; | |
3226 | unsigned long later; | |
3227 | int cnt; | |
3228 | ||
3229 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 3230 | if (cnt) |
51ef4c26 | 3231 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
bbb9d180 | 3232 | tgt_id, lun_id, context); |
915caaaf JS |
3233 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
3234 | while (time_after(later, jiffies) && cnt) { | |
3235 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 3236 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 3237 | } |
dea3101e | 3238 | if (cnt) { |
e8b62011 | 3239 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
3240 | "0724 I/O flush failure for context %s : cnt x%x\n", |
3241 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
3242 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
3243 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
3244 | cnt); | |
3245 | return FAILED; | |
dea3101e | 3246 | } |
bbb9d180 JS |
3247 | return SUCCESS; |
3248 | } | |
3249 | ||
3250 | /** | |
3251 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
3252 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3253 | * | |
3254 | * This routine does a device reset by sending a LUN_RESET task management | |
3255 | * command. | |
3256 | * | |
3257 | * Return code : | |
3258 | * 0x2003 - Error | |
3259 | * 0x2002 - Success | |
3260 | **/ | |
3261 | static int | |
3262 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
3263 | { | |
3264 | struct Scsi_Host *shost = cmnd->device->host; | |
3265 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3266 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3267 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3268 | unsigned tgt_id = cmnd->device->id; |
3269 | unsigned int lun_id = cmnd->device->lun; | |
3270 | struct lpfc_scsi_event_header scsi_event; | |
3271 | int status; | |
3272 | ||
1c6f4ef5 JS |
3273 | if (!rdata) { |
3274 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3275 | "0798 Device Reset rport failure: rdata x%p\n", rdata); | |
3276 | return FAILED; | |
3277 | } | |
3278 | pnode = rdata->pnode; | |
65d430fa | 3279 | fc_block_scsi_eh(cmnd); |
bbb9d180 JS |
3280 | |
3281 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3282 | if (status == FAILED) { | |
3283 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3284 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
3285 | return FAILED; | |
3286 | } | |
3287 | ||
3288 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3289 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
3290 | scsi_event.lun = lun_id; | |
3291 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3292 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3293 | ||
3294 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3295 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3296 | ||
3297 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3298 | FCP_LUN_RESET); | |
3299 | ||
3300 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3301 | "0713 SCSI layer issued Device Reset (%d, %d) " | |
3302 | "return x%x\n", tgt_id, lun_id, status); | |
3303 | ||
3304 | /* | |
3305 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3306 | * or if the TMF failed, they may be in an indeterminate state. | |
3307 | * So, continue on. | |
3308 | * We will report success if all the i/o aborts successfully. | |
3309 | */ | |
3310 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3311 | LPFC_CTX_LUN); | |
3312 | return status; | |
3313 | } | |
3314 | ||
3315 | /** | |
3316 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
3317 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3318 | * | |
3319 | * This routine does a target reset by sending a TARGET_RESET task management | |
3320 | * command. | |
3321 | * | |
3322 | * Return code : | |
3323 | * 0x2003 - Error | |
3324 | * 0x2002 - Success | |
3325 | **/ | |
3326 | static int | |
3327 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
3328 | { | |
3329 | struct Scsi_Host *shost = cmnd->device->host; | |
3330 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3331 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3332 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3333 | unsigned tgt_id = cmnd->device->id; |
3334 | unsigned int lun_id = cmnd->device->lun; | |
3335 | struct lpfc_scsi_event_header scsi_event; | |
3336 | int status; | |
3337 | ||
1c6f4ef5 JS |
3338 | if (!rdata) { |
3339 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3340 | "0799 Target Reset rport failure: rdata x%p\n", rdata); | |
3341 | return FAILED; | |
3342 | } | |
3343 | pnode = rdata->pnode; | |
65d430fa | 3344 | fc_block_scsi_eh(cmnd); |
bbb9d180 JS |
3345 | |
3346 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3347 | if (status == FAILED) { | |
3348 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3349 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
3350 | return FAILED; | |
3351 | } | |
3352 | ||
3353 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3354 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
3355 | scsi_event.lun = 0; | |
3356 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3357 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3358 | ||
3359 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3360 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3361 | ||
3362 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3363 | FCP_TARGET_RESET); | |
3364 | ||
3365 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3366 | "0723 SCSI layer issued Target Reset (%d, %d) " | |
3367 | "return x%x\n", tgt_id, lun_id, status); | |
3368 | ||
3369 | /* | |
3370 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3371 | * or if the TMF failed, they may be in an indeterminate state. | |
3372 | * So, continue on. | |
3373 | * We will report success if all the i/o aborts successfully. | |
3374 | */ | |
3375 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3376 | LPFC_CTX_TGT); | |
3377 | return status; | |
dea3101e JB |
3378 | } |
3379 | ||
9bad7671 | 3380 | /** |
3621a710 | 3381 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
3382 | * @cmnd: Pointer to scsi_cmnd data structure. |
3383 | * | |
bbb9d180 JS |
3384 | * This routine does target reset to all targets on @cmnd->device->host. |
3385 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 3386 | * |
bbb9d180 JS |
3387 | * Return code : |
3388 | * 0x2003 - Error | |
3389 | * 0x2002 - Success | |
9bad7671 | 3390 | **/ |
94d0e7b8 | 3391 | static int |
7054a606 | 3392 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 3393 | { |
2e0fef85 JS |
3394 | struct Scsi_Host *shost = cmnd->device->host; |
3395 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 3396 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 3397 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
3398 | int match; |
3399 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
3400 | |
3401 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3402 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
3403 | scsi_event.lun = 0; | |
3404 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
3405 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
3406 | ||
bbb9d180 JS |
3407 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
3408 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 3409 | |
65d430fa | 3410 | fc_block_scsi_eh(cmnd); |
bbb9d180 | 3411 | |
dea3101e JB |
3412 | /* |
3413 | * Since the driver manages a single bus device, reset all | |
3414 | * targets known to the driver. Should any target reset | |
3415 | * fail, this routine returns failure to the midlayer. | |
3416 | */ | |
e17da18e | 3417 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 3418 | /* Search for mapped node by target ID */ |
dea3101e | 3419 | match = 0; |
2e0fef85 JS |
3420 | spin_lock_irq(shost->host_lock); |
3421 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
3422 | if (!NLP_CHK_NODE_ACT(ndlp)) |
3423 | continue; | |
685f0bf7 | 3424 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 3425 | ndlp->nlp_sid == i && |
685f0bf7 | 3426 | ndlp->rport) { |
dea3101e JB |
3427 | match = 1; |
3428 | break; | |
3429 | } | |
3430 | } | |
2e0fef85 | 3431 | spin_unlock_irq(shost->host_lock); |
dea3101e JB |
3432 | if (!match) |
3433 | continue; | |
bbb9d180 JS |
3434 | |
3435 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
3436 | i, 0, FCP_TARGET_RESET); | |
3437 | ||
3438 | if (status != SUCCESS) { | |
e8b62011 JS |
3439 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3440 | "0700 Bus Reset on target %d failed\n", | |
3441 | i); | |
915caaaf | 3442 | ret = FAILED; |
dea3101e JB |
3443 | } |
3444 | } | |
6175c02a | 3445 | /* |
bbb9d180 JS |
3446 | * We have to clean up i/o as : they may be orphaned by the TMFs |
3447 | * above; or if any of the TMFs failed, they may be in an | |
3448 | * indeterminate state. | |
3449 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 3450 | */ |
bbb9d180 JS |
3451 | |
3452 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
3453 | if (status != SUCCESS) | |
0bd4ca25 | 3454 | ret = FAILED; |
bbb9d180 | 3455 | |
e8b62011 JS |
3456 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3457 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e JB |
3458 | return ret; |
3459 | } | |
3460 | ||
9bad7671 | 3461 | /** |
3621a710 | 3462 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
3463 | * @sdev: Pointer to scsi_device. |
3464 | * | |
3465 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
3466 | * globally available list of scsi buffers. This routine also makes sure scsi | |
3467 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
3468 | * of scsi buffer exists for the lifetime of the driver. | |
3469 | * | |
3470 | * Return codes: | |
3471 | * non-0 - Error | |
3472 | * 0 - Success | |
3473 | **/ | |
dea3101e JB |
3474 | static int |
3475 | lpfc_slave_alloc(struct scsi_device *sdev) | |
3476 | { | |
2e0fef85 JS |
3477 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3478 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 3479 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 3480 | uint32_t total = 0; |
dea3101e | 3481 | uint32_t num_to_alloc = 0; |
3772a991 | 3482 | int num_allocated = 0; |
dea3101e | 3483 | |
19a7b4ae | 3484 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e JB |
3485 | return -ENXIO; |
3486 | ||
19a7b4ae | 3487 | sdev->hostdata = rport->dd_data; |
dea3101e JB |
3488 | |
3489 | /* | |
3490 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
3491 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
3492 | * HBA limit conveyed to the midlayer via the host structure. The |
3493 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
3494 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e JB |
3495 | */ |
3496 | total = phba->total_scsi_bufs; | |
3de2a653 | 3497 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
3498 | |
3499 | /* Allow some exchanges to be available always to complete discovery */ | |
3500 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3501 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3502 | "0704 At limitation of %d preallocated " | |
3503 | "command buffers\n", total); | |
dea3101e | 3504 | return 0; |
92d7f7b0 JS |
3505 | /* Allow some exchanges to be available always to complete discovery */ |
3506 | } else if (total + num_to_alloc > | |
3507 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3508 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3509 | "0705 Allocation request of %d " | |
3510 | "command buffers will exceed max of %d. " | |
3511 | "Reducing allocation request to %d.\n", | |
3512 | num_to_alloc, phba->cfg_hba_queue_depth, | |
3513 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e JB |
3514 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
3515 | } | |
3772a991 JS |
3516 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
3517 | if (num_to_alloc != num_allocated) { | |
3518 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
3519 | "0708 Allocation request of %d " | |
3520 | "command buffers did not succeed. " | |
3521 | "Allocated %d buffers.\n", | |
3522 | num_to_alloc, num_allocated); | |
dea3101e | 3523 | } |
1c6f4ef5 JS |
3524 | if (num_allocated > 0) |
3525 | phba->total_scsi_bufs += num_allocated; | |
dea3101e JB |
3526 | return 0; |
3527 | } | |
3528 | ||
9bad7671 | 3529 | /** |
3621a710 | 3530 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
3531 | * @sdev: Pointer to scsi_device. |
3532 | * | |
3533 | * This routine configures following items | |
3534 | * - Tag command queuing support for @sdev if supported. | |
3535 | * - Dev loss time out value of fc_rport. | |
3536 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. | |
3537 | * | |
3538 | * Return codes: | |
3539 | * 0 - Success | |
3540 | **/ | |
dea3101e JB |
3541 | static int |
3542 | lpfc_slave_configure(struct scsi_device *sdev) | |
3543 | { | |
2e0fef85 JS |
3544 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3545 | struct lpfc_hba *phba = vport->phba; | |
3546 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e JB |
3547 | |
3548 | if (sdev->tagged_supported) | |
3de2a653 | 3549 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 3550 | else |
3de2a653 | 3551 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e JB |
3552 | |
3553 | /* | |
3554 | * Initialize the fc transport attributes for the target | |
3555 | * containing this scsi device. Also note that the driver's | |
3556 | * target pointer is stored in the starget_data for the | |
3557 | * driver's sysfs entry point functions. | |
3558 | */ | |
3de2a653 | 3559 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 3560 | |
875fbdfe | 3561 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
3562 | lpfc_sli_handle_fast_ring_event(phba, |
3563 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
3564 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
3565 | lpfc_poll_rearm_timer(phba); | |
3566 | } | |
3567 | ||
dea3101e JB |
3568 | return 0; |
3569 | } | |
3570 | ||
9bad7671 | 3571 | /** |
3621a710 | 3572 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
3573 | * @sdev: Pointer to scsi_device. |
3574 | * | |
3575 | * This routine sets @sdev hostatdata filed to null. | |
3576 | **/ | |
dea3101e JB |
3577 | static void |
3578 | lpfc_slave_destroy(struct scsi_device *sdev) | |
3579 | { | |
3580 | sdev->hostdata = NULL; | |
3581 | return; | |
3582 | } | |
3583 | ||
92d7f7b0 | 3584 | |
dea3101e JB |
3585 | struct scsi_host_template lpfc_template = { |
3586 | .module = THIS_MODULE, | |
3587 | .name = LPFC_DRIVER_NAME, | |
3588 | .info = lpfc_info, | |
3589 | .queuecommand = lpfc_queuecommand, | |
3590 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
3591 | .eh_device_reset_handler = lpfc_device_reset_handler, |
3592 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 3593 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
dea3101e JB |
3594 | .slave_alloc = lpfc_slave_alloc, |
3595 | .slave_configure = lpfc_slave_configure, | |
3596 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 3597 | .scan_finished = lpfc_scan_finished, |
dea3101e | 3598 | .this_id = -1, |
83108bd3 | 3599 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e JB |
3600 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
3601 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 3602 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 3603 | .max_sectors = 0xFFFF, |
f1c3b0fc | 3604 | .vendor_id = LPFC_NL_VENDOR_ID, |
5ffc266e | 3605 | .change_queue_depth = lpfc_change_queue_depth, |
dea3101e | 3606 | }; |
3de2a653 JS |
3607 | |
3608 | struct scsi_host_template lpfc_vport_template = { | |
3609 | .module = THIS_MODULE, | |
3610 | .name = LPFC_DRIVER_NAME, | |
3611 | .info = lpfc_info, | |
3612 | .queuecommand = lpfc_queuecommand, | |
3613 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
3614 | .eh_device_reset_handler = lpfc_device_reset_handler, |
3615 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
3616 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
3617 | .slave_alloc = lpfc_slave_alloc, | |
3618 | .slave_configure = lpfc_slave_configure, | |
3619 | .slave_destroy = lpfc_slave_destroy, | |
3620 | .scan_finished = lpfc_scan_finished, | |
3621 | .this_id = -1, | |
83108bd3 | 3622 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
3623 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
3624 | .use_clustering = ENABLE_CLUSTERING, | |
3625 | .shost_attrs = lpfc_vport_attrs, | |
3626 | .max_sectors = 0xFFFF, | |
5ffc266e | 3627 | .change_queue_depth = lpfc_change_queue_depth, |
3de2a653 | 3628 | }; |