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dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
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 | 8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
dea3101e | 21 | #include <linux/pci.h> |
22 | #include <linux/interrupt.h> | |
a90f5684 | 23 | #include <linux/delay.h> |
e2a0a9d6 | 24 | #include <asm/unaligned.h> |
dea3101e | 25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 28 | #include <scsi/scsi_eh.h> |
dea3101e | 29 | #include <scsi/scsi_host.h> |
30 | #include <scsi/scsi_tcq.h> | |
31 | #include <scsi/scsi_transport_fc.h> | |
32 | ||
33 | #include "lpfc_version.h" | |
da0436e9 | 34 | #include "lpfc_hw4.h" |
dea3101e | 35 | #include "lpfc_hw.h" |
36 | #include "lpfc_sli.h" | |
da0436e9 | 37 | #include "lpfc_sli4.h" |
ea2151b4 | 38 | #include "lpfc_nl.h" |
dea3101e | 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 | 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); | |
e2a0a9d6 JS |
62 | |
63 | static void | |
6a9c52cf | 64 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
65 | { |
66 | void *src, *dst; | |
67 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
68 | ||
69 | if (!_dump_buf_data) { | |
6a9c52cf JS |
70 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
71 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
72 | __func__); |
73 | return; | |
74 | } | |
75 | ||
76 | ||
77 | if (!sgde) { | |
6a9c52cf JS |
78 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
79 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
80 | return; |
81 | } | |
82 | ||
83 | dst = (void *) _dump_buf_data; | |
84 | while (sgde) { | |
85 | src = sg_virt(sgde); | |
86 | memcpy(dst, src, sgde->length); | |
87 | dst += sgde->length; | |
88 | sgde = sg_next(sgde); | |
89 | } | |
90 | } | |
91 | ||
92 | static void | |
6a9c52cf | 93 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
94 | { |
95 | void *src, *dst; | |
96 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
97 | ||
98 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
99 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
100 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
101 | __func__); |
102 | return; | |
103 | } | |
104 | ||
105 | if (!sgde) { | |
6a9c52cf JS |
106 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
107 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
108 | return; |
109 | } | |
110 | ||
111 | dst = _dump_buf_dif; | |
112 | while (sgde) { | |
113 | src = sg_virt(sgde); | |
114 | memcpy(dst, src, sgde->length); | |
115 | dst += sgde->length; | |
116 | sgde = sg_next(sgde); | |
117 | } | |
118 | } | |
119 | ||
f1126688 JS |
120 | /** |
121 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
122 | * @phba: Pointer to HBA object. | |
123 | * @lpfc_cmd: lpfc scsi command object pointer. | |
124 | * | |
125 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
126 | * set the last bit in the response sge entry. | |
127 | **/ | |
128 | static void | |
129 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
130 | struct lpfc_scsi_buf *lpfc_cmd) | |
131 | { | |
132 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
133 | if (sgl) { | |
134 | sgl += 1; | |
135 | sgl->word2 = le32_to_cpu(sgl->word2); | |
136 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
137 | sgl->word2 = cpu_to_le32(sgl->word2); | |
138 | } | |
139 | } | |
140 | ||
ea2151b4 | 141 | /** |
3621a710 | 142 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
143 | * @phba: Pointer to HBA object. |
144 | * @lpfc_cmd: lpfc scsi command object pointer. | |
145 | * | |
146 | * This function is called when there is a command completion and this | |
147 | * function updates the statistical data for the command completion. | |
148 | **/ | |
149 | static void | |
150 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
151 | { | |
152 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
153 | struct lpfc_nodelist *pnode = rdata->pnode; | |
154 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
155 | unsigned long flags; | |
156 | struct Scsi_Host *shost = cmd->device->host; | |
157 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
158 | unsigned long latency; | |
159 | int i; | |
160 | ||
161 | if (cmd->result) | |
162 | return; | |
163 | ||
9f1e1b50 JS |
164 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
165 | ||
ea2151b4 JS |
166 | spin_lock_irqsave(shost->host_lock, flags); |
167 | if (!vport->stat_data_enabled || | |
168 | vport->stat_data_blocked || | |
169 | !pnode->lat_data || | |
170 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
171 | spin_unlock_irqrestore(shost->host_lock, flags); | |
172 | return; | |
173 | } | |
ea2151b4 JS |
174 | |
175 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
176 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
177 | phba->bucket_step; | |
9f1e1b50 JS |
178 | /* check array subscript bounds */ |
179 | if (i < 0) | |
180 | i = 0; | |
181 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
182 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
183 | } else { |
184 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
185 | if (latency <= (phba->bucket_base + | |
186 | ((1<<i)*phba->bucket_step))) | |
187 | break; | |
188 | } | |
189 | ||
190 | pnode->lat_data[i].cmd_count++; | |
191 | spin_unlock_irqrestore(shost->host_lock, flags); | |
192 | } | |
193 | ||
ea2151b4 | 194 | /** |
3621a710 | 195 | * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event |
ea2151b4 JS |
196 | * @phba: Pointer to HBA context object. |
197 | * @vport: Pointer to vport object. | |
198 | * @ndlp: Pointer to FC node associated with the target. | |
199 | * @lun: Lun number of the scsi device. | |
200 | * @old_val: Old value of the queue depth. | |
201 | * @new_val: New value of the queue depth. | |
202 | * | |
203 | * This function sends an event to the mgmt application indicating | |
204 | * there is a change in the scsi device queue depth. | |
205 | **/ | |
206 | static void | |
207 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
208 | struct lpfc_vport *vport, | |
209 | struct lpfc_nodelist *ndlp, | |
210 | uint32_t lun, | |
211 | uint32_t old_val, | |
212 | uint32_t new_val) | |
213 | { | |
214 | struct lpfc_fast_path_event *fast_path_evt; | |
215 | unsigned long flags; | |
216 | ||
217 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
218 | if (!fast_path_evt) | |
219 | return; | |
220 | ||
221 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
222 | FC_REG_SCSI_EVENT; | |
223 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
224 | LPFC_EVENT_VARQUEDEPTH; | |
225 | ||
226 | /* Report all luns with change in queue depth */ | |
227 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
228 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
229 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
230 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
231 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
232 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
233 | } | |
234 | ||
235 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
236 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
237 | fast_path_evt->vport = vport; | |
238 | ||
239 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
240 | spin_lock_irqsave(&phba->hbalock, flags); | |
241 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
242 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
243 | lpfc_worker_wake_up(phba); | |
244 | ||
245 | return; | |
246 | } | |
247 | ||
5ffc266e JS |
248 | /** |
249 | * lpfc_change_queue_depth - Alter scsi device queue depth | |
250 | * @sdev: Pointer the scsi device on which to change the queue depth. | |
251 | * @qdepth: New queue depth to set the sdev to. | |
252 | * @reason: The reason for the queue depth change. | |
253 | * | |
254 | * This function is called by the midlayer and the LLD to alter the queue | |
255 | * depth for a scsi device. This function sets the queue depth to the new | |
256 | * value and sends an event out to log the queue depth change. | |
257 | **/ | |
258 | int | |
259 | lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) | |
260 | { | |
261 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; | |
262 | struct lpfc_hba *phba = vport->phba; | |
263 | struct lpfc_rport_data *rdata; | |
264 | unsigned long new_queue_depth, old_queue_depth; | |
265 | ||
266 | old_queue_depth = sdev->queue_depth; | |
267 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
268 | new_queue_depth = sdev->queue_depth; | |
269 | rdata = sdev->hostdata; | |
270 | if (rdata) | |
271 | lpfc_send_sdev_queuedepth_change_event(phba, vport, | |
272 | rdata->pnode, sdev->lun, | |
273 | old_queue_depth, | |
274 | new_queue_depth); | |
275 | return sdev->queue_depth; | |
276 | } | |
277 | ||
9bad7671 | 278 | /** |
3621a710 | 279 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
280 | * @phba: The Hba for which this call is being executed. |
281 | * | |
282 | * This routine is called when there is resource error in driver or firmware. | |
283 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
284 | * posts at most 1 event each second. This routine wakes up worker thread of | |
285 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
286 | * | |
287 | * This routine should be called with no lock held. | |
288 | **/ | |
92d7f7b0 | 289 | void |
eaf15d5b | 290 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
291 | { |
292 | unsigned long flags; | |
5e9d9b82 | 293 | uint32_t evt_posted; |
92d7f7b0 JS |
294 | |
295 | spin_lock_irqsave(&phba->hbalock, flags); | |
296 | atomic_inc(&phba->num_rsrc_err); | |
297 | phba->last_rsrc_error_time = jiffies; | |
298 | ||
299 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
300 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
301 | return; | |
302 | } | |
303 | ||
304 | phba->last_ramp_down_time = jiffies; | |
305 | ||
306 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
307 | ||
308 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
309 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
310 | if (!evt_posted) | |
92d7f7b0 | 311 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
312 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
313 | ||
5e9d9b82 JS |
314 | if (!evt_posted) |
315 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
316 | return; |
317 | } | |
318 | ||
9bad7671 | 319 | /** |
3621a710 | 320 | * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread |
9bad7671 JS |
321 | * @phba: The Hba for which this call is being executed. |
322 | * | |
323 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
324 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
325 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
326 | * to process WORKER_RAM_DOWN_EVENT event. | |
327 | * | |
328 | * This routine should be called with no lock held. | |
329 | **/ | |
92d7f7b0 | 330 | static inline void |
3de2a653 | 331 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
a257bf90 | 332 | uint32_t queue_depth) |
92d7f7b0 JS |
333 | { |
334 | unsigned long flags; | |
3de2a653 | 335 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 336 | uint32_t evt_posted; |
92d7f7b0 JS |
337 | atomic_inc(&phba->num_cmd_success); |
338 | ||
a257bf90 | 339 | if (vport->cfg_lun_queue_depth <= queue_depth) |
92d7f7b0 | 340 | return; |
92d7f7b0 | 341 | spin_lock_irqsave(&phba->hbalock, flags); |
5ffc266e JS |
342 | if (time_before(jiffies, |
343 | phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) || | |
344 | time_before(jiffies, | |
345 | phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) { | |
92d7f7b0 JS |
346 | spin_unlock_irqrestore(&phba->hbalock, flags); |
347 | return; | |
348 | } | |
92d7f7b0 JS |
349 | phba->last_ramp_up_time = jiffies; |
350 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
351 | ||
352 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
353 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
354 | if (!evt_posted) | |
92d7f7b0 | 355 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
356 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
357 | ||
5e9d9b82 JS |
358 | if (!evt_posted) |
359 | lpfc_worker_wake_up(phba); | |
360 | return; | |
92d7f7b0 JS |
361 | } |
362 | ||
9bad7671 | 363 | /** |
3621a710 | 364 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
365 | * @phba: The Hba for which this call is being executed. |
366 | * | |
367 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
368 | * thread.This routine reduces queue depth for all scsi device on each vport | |
369 | * associated with @phba. | |
370 | **/ | |
92d7f7b0 JS |
371 | void |
372 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
373 | { | |
549e55cd JS |
374 | struct lpfc_vport **vports; |
375 | struct Scsi_Host *shost; | |
92d7f7b0 | 376 | struct scsi_device *sdev; |
5ffc266e | 377 | unsigned long new_queue_depth; |
92d7f7b0 | 378 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 379 | int i; |
92d7f7b0 JS |
380 | |
381 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
382 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
383 | ||
549e55cd JS |
384 | vports = lpfc_create_vport_work_array(phba); |
385 | if (vports != NULL) | |
21e9a0a5 | 386 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
387 | shost = lpfc_shost_from_vport(vports[i]); |
388 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 389 | new_queue_depth = |
549e55cd JS |
390 | sdev->queue_depth * num_rsrc_err / |
391 | (num_rsrc_err + num_cmd_success); | |
392 | if (!new_queue_depth) | |
393 | new_queue_depth = sdev->queue_depth - 1; | |
394 | else | |
395 | new_queue_depth = sdev->queue_depth - | |
396 | new_queue_depth; | |
5ffc266e JS |
397 | lpfc_change_queue_depth(sdev, new_queue_depth, |
398 | SCSI_QDEPTH_DEFAULT); | |
549e55cd | 399 | } |
92d7f7b0 | 400 | } |
09372820 | 401 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
402 | atomic_set(&phba->num_rsrc_err, 0); |
403 | atomic_set(&phba->num_cmd_success, 0); | |
404 | } | |
405 | ||
9bad7671 | 406 | /** |
3621a710 | 407 | * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler |
9bad7671 JS |
408 | * @phba: The Hba for which this call is being executed. |
409 | * | |
410 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
411 | * thread.This routine increases queue depth for all scsi device on each vport | |
412 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
413 | * num_cmd_success to zero. | |
414 | **/ | |
92d7f7b0 JS |
415 | void |
416 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
417 | { | |
549e55cd JS |
418 | struct lpfc_vport **vports; |
419 | struct Scsi_Host *shost; | |
92d7f7b0 | 420 | struct scsi_device *sdev; |
549e55cd JS |
421 | int i; |
422 | ||
423 | vports = lpfc_create_vport_work_array(phba); | |
424 | if (vports != NULL) | |
21e9a0a5 | 425 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
426 | shost = lpfc_shost_from_vport(vports[i]); |
427 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
428 | if (vports[i]->cfg_lun_queue_depth <= |
429 | sdev->queue_depth) | |
430 | continue; | |
5ffc266e JS |
431 | lpfc_change_queue_depth(sdev, |
432 | sdev->queue_depth+1, | |
433 | SCSI_QDEPTH_RAMP_UP); | |
549e55cd | 434 | } |
92d7f7b0 | 435 | } |
09372820 | 436 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
437 | atomic_set(&phba->num_rsrc_err, 0); |
438 | atomic_set(&phba->num_cmd_success, 0); | |
439 | } | |
440 | ||
a8e497d5 | 441 | /** |
3621a710 | 442 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
443 | * @phba: Pointer to HBA context object. |
444 | * | |
445 | * This function walks vport list and set each SCSI host to block state | |
446 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
447 | * with EEH when device's PCI slot has been permanently disabled. | |
448 | **/ | |
449 | void | |
450 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
451 | { | |
452 | struct lpfc_vport **vports; | |
453 | struct Scsi_Host *shost; | |
454 | struct scsi_device *sdev; | |
455 | struct fc_rport *rport; | |
456 | int i; | |
457 | ||
458 | vports = lpfc_create_vport_work_array(phba); | |
459 | if (vports != NULL) | |
21e9a0a5 | 460 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
461 | shost = lpfc_shost_from_vport(vports[i]); |
462 | shost_for_each_device(sdev, shost) { | |
463 | rport = starget_to_rport(scsi_target(sdev)); | |
464 | fc_remote_port_delete(rport); | |
465 | } | |
466 | } | |
467 | lpfc_destroy_vport_work_array(phba, vports); | |
468 | } | |
469 | ||
9bad7671 | 470 | /** |
3772a991 | 471 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 472 | * @vport: The virtual port for which this call being executed. |
3772a991 | 473 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 474 | * |
3772a991 JS |
475 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
476 | * the scsi buffer contains all the necessary information needed to initiate | |
477 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
478 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
479 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
480 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
481 | * |
482 | * Return codes: | |
3772a991 JS |
483 | * int - number of scsi buffers that were allocated. |
484 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 485 | **/ |
3772a991 JS |
486 | static int |
487 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 488 | { |
2e0fef85 | 489 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 490 | struct lpfc_scsi_buf *psb; |
491 | struct ulp_bde64 *bpl; | |
492 | IOCB_t *iocb; | |
34b02dcd JS |
493 | dma_addr_t pdma_phys_fcp_cmd; |
494 | dma_addr_t pdma_phys_fcp_rsp; | |
495 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 496 | uint16_t iotag; |
3772a991 | 497 | int bcnt; |
dea3101e | 498 | |
3772a991 JS |
499 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
500 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
501 | if (!psb) | |
502 | break; | |
dea3101e | 503 | |
3772a991 JS |
504 | /* |
505 | * Get memory from the pci pool to map the virt space to pci | |
506 | * bus space for an I/O. The DMA buffer includes space for the | |
507 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
508 | * necessary to support the sg_tablesize. | |
509 | */ | |
510 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
511 | GFP_KERNEL, &psb->dma_handle); | |
512 | if (!psb->data) { | |
513 | kfree(psb); | |
514 | break; | |
515 | } | |
516 | ||
517 | /* Initialize virtual ptrs to dma_buf region. */ | |
518 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
519 | ||
520 | /* Allocate iotag for psb->cur_iocbq. */ | |
521 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
522 | if (iotag == 0) { | |
523 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
524 | psb->data, psb->dma_handle); | |
525 | kfree(psb); | |
526 | break; | |
527 | } | |
528 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
529 | ||
530 | psb->fcp_cmnd = psb->data; | |
531 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
532 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 533 | sizeof(struct fcp_rsp); |
dea3101e | 534 | |
3772a991 JS |
535 | /* Initialize local short-hand pointers. */ |
536 | bpl = psb->fcp_bpl; | |
537 | pdma_phys_fcp_cmd = psb->dma_handle; | |
538 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
539 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
540 | sizeof(struct fcp_rsp); | |
541 | ||
542 | /* | |
543 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
544 | * are sg list bdes. Initialize the first two and leave the | |
545 | * rest for queuecommand. | |
546 | */ | |
547 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
548 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
549 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
550 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
551 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
552 | ||
553 | /* Setup the physical region for the FCP RSP */ | |
554 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
555 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
556 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
557 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
558 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
559 | ||
560 | /* | |
561 | * Since the IOCB for the FCP I/O is built into this | |
562 | * lpfc_scsi_buf, initialize it with all known data now. | |
563 | */ | |
564 | iocb = &psb->cur_iocbq.iocb; | |
565 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
566 | if ((phba->sli_rev == 3) && | |
567 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
568 | /* fill in immediate fcp command BDE */ | |
569 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
570 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
571 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
572 | unsli3.fcp_ext.icd); | |
573 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
574 | iocb->ulpBdeCount = 0; | |
575 | iocb->ulpLe = 0; | |
576 | /* fill in responce BDE */ | |
577 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = | |
578 | BUFF_TYPE_BDE_64; | |
579 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
580 | sizeof(struct fcp_rsp); | |
581 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
582 | putPaddrLow(pdma_phys_fcp_rsp); | |
583 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
584 | putPaddrHigh(pdma_phys_fcp_rsp); | |
585 | } else { | |
586 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
587 | iocb->un.fcpi64.bdl.bdeSize = | |
588 | (2 * sizeof(struct ulp_bde64)); | |
589 | iocb->un.fcpi64.bdl.addrLow = | |
590 | putPaddrLow(pdma_phys_bpl); | |
591 | iocb->un.fcpi64.bdl.addrHigh = | |
592 | putPaddrHigh(pdma_phys_bpl); | |
593 | iocb->ulpBdeCount = 1; | |
594 | iocb->ulpLe = 1; | |
595 | } | |
596 | iocb->ulpClass = CLASS3; | |
597 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 JS |
598 | /* Put it back into the SCSI buffer list */ |
599 | lpfc_release_scsi_buf_s4(phba, psb); | |
dea3101e | 600 | |
34b02dcd | 601 | } |
dea3101e | 602 | |
3772a991 | 603 | return bcnt; |
dea3101e | 604 | } |
605 | ||
da0436e9 JS |
606 | /** |
607 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
608 | * @phba: pointer to lpfc hba data structure. | |
609 | * @axri: pointer to the fcp xri abort wcqe structure. | |
610 | * | |
611 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
612 | * FCP aborted xri. | |
613 | **/ | |
614 | void | |
615 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
616 | struct sli4_wcqe_xri_aborted *axri) | |
617 | { | |
618 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
619 | struct lpfc_scsi_buf *psb, *next_psb; | |
620 | unsigned long iflag = 0; | |
621 | ||
622 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, iflag); | |
623 | list_for_each_entry_safe(psb, next_psb, | |
624 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
625 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
626 | list_del(&psb->list); | |
627 | psb->status = IOSTAT_SUCCESS; | |
628 | spin_unlock_irqrestore( | |
629 | &phba->sli4_hba.abts_scsi_buf_list_lock, | |
630 | iflag); | |
631 | lpfc_release_scsi_buf_s4(phba, psb); | |
632 | return; | |
633 | } | |
634 | } | |
635 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
636 | iflag); | |
637 | } | |
638 | ||
639 | /** | |
640 | * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block | |
641 | * @phba: pointer to lpfc hba data structure. | |
642 | * | |
643 | * This routine walks the list of scsi buffers that have been allocated and | |
644 | * repost them to the HBA by using SGL block post. This is needed after a | |
645 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
646 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
647 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
648 | * | |
649 | * Returns: 0 = success, non-zero failure. | |
650 | **/ | |
651 | int | |
652 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
653 | { | |
654 | struct lpfc_scsi_buf *psb; | |
655 | int index, status, bcnt = 0, rcnt = 0, rc = 0; | |
656 | LIST_HEAD(sblist); | |
657 | ||
658 | for (index = 0; index < phba->sli4_hba.scsi_xri_cnt; index++) { | |
659 | psb = phba->sli4_hba.lpfc_scsi_psb_array[index]; | |
660 | if (psb) { | |
661 | /* Remove from SCSI buffer list */ | |
662 | list_del(&psb->list); | |
663 | /* Add it to a local SCSI buffer list */ | |
664 | list_add_tail(&psb->list, &sblist); | |
665 | if (++rcnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
666 | bcnt = rcnt; | |
667 | rcnt = 0; | |
668 | } | |
669 | } else | |
670 | /* A hole present in the XRI array, need to skip */ | |
671 | bcnt = rcnt; | |
672 | ||
673 | if (index == phba->sli4_hba.scsi_xri_cnt - 1) | |
674 | /* End of XRI array for SCSI buffer, complete */ | |
675 | bcnt = rcnt; | |
676 | ||
677 | /* Continue until collect up to a nembed page worth of sgls */ | |
678 | if (bcnt == 0) | |
679 | continue; | |
680 | /* Now, post the SCSI buffer list sgls as a block */ | |
681 | status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt); | |
682 | /* Reset SCSI buffer count for next round of posting */ | |
683 | bcnt = 0; | |
684 | while (!list_empty(&sblist)) { | |
685 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
686 | list); | |
687 | if (status) { | |
688 | /* Put this back on the abort scsi list */ | |
689 | psb->status = IOSTAT_LOCAL_REJECT; | |
690 | psb->result = IOERR_ABORT_REQUESTED; | |
691 | rc++; | |
692 | } else | |
693 | psb->status = IOSTAT_SUCCESS; | |
694 | /* Put it back into the SCSI buffer list */ | |
695 | lpfc_release_scsi_buf_s4(phba, psb); | |
696 | } | |
697 | } | |
698 | return rc; | |
699 | } | |
700 | ||
701 | /** | |
702 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
703 | * @vport: The virtual port for which this call being executed. | |
704 | * @num_to_allocate: The requested number of buffers to allocate. | |
705 | * | |
706 | * This routine allocates a scsi buffer for device with SLI-4 interface spec, | |
707 | * the scsi buffer contains all the necessary information needed to initiate | |
708 | * a SCSI I/O. | |
709 | * | |
710 | * Return codes: | |
711 | * int - number of scsi buffers that were allocated. | |
712 | * 0 = failure, less than num_to_alloc is a partial failure. | |
713 | **/ | |
714 | static int | |
715 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
716 | { | |
717 | struct lpfc_hba *phba = vport->phba; | |
718 | struct lpfc_scsi_buf *psb; | |
719 | struct sli4_sge *sgl; | |
720 | IOCB_t *iocb; | |
721 | dma_addr_t pdma_phys_fcp_cmd; | |
722 | dma_addr_t pdma_phys_fcp_rsp; | |
723 | dma_addr_t pdma_phys_bpl, pdma_phys_bpl1; | |
724 | uint16_t iotag, last_xritag = NO_XRI; | |
725 | int status = 0, index; | |
726 | int bcnt; | |
727 | int non_sequential_xri = 0; | |
728 | int rc = 0; | |
729 | LIST_HEAD(sblist); | |
730 | ||
731 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { | |
732 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
733 | if (!psb) | |
734 | break; | |
735 | ||
736 | /* | |
737 | * Get memory from the pci pool to map the virt space to pci bus | |
738 | * space for an I/O. The DMA buffer includes space for the | |
739 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
740 | * necessary to support the sg_tablesize. | |
741 | */ | |
742 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
743 | GFP_KERNEL, &psb->dma_handle); | |
744 | if (!psb->data) { | |
745 | kfree(psb); | |
746 | break; | |
747 | } | |
748 | ||
749 | /* Initialize virtual ptrs to dma_buf region. */ | |
750 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
751 | ||
752 | /* Allocate iotag for psb->cur_iocbq. */ | |
753 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
754 | if (iotag == 0) { | |
755 | kfree(psb); | |
756 | break; | |
757 | } | |
758 | ||
759 | psb->cur_iocbq.sli4_xritag = lpfc_sli4_next_xritag(phba); | |
760 | if (psb->cur_iocbq.sli4_xritag == NO_XRI) { | |
761 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
762 | psb->data, psb->dma_handle); | |
763 | kfree(psb); | |
764 | break; | |
765 | } | |
766 | if (last_xritag != NO_XRI | |
767 | && psb->cur_iocbq.sli4_xritag != (last_xritag+1)) { | |
768 | non_sequential_xri = 1; | |
769 | } else | |
770 | list_add_tail(&psb->list, &sblist); | |
771 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
772 | ||
773 | index = phba->sli4_hba.scsi_xri_cnt++; | |
774 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
775 | ||
776 | psb->fcp_bpl = psb->data; | |
777 | psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size) | |
778 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
779 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + | |
780 | sizeof(struct fcp_cmnd)); | |
781 | ||
782 | /* Initialize local short-hand pointers. */ | |
783 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
784 | pdma_phys_bpl = psb->dma_handle; | |
785 | pdma_phys_fcp_cmd = | |
786 | (psb->dma_handle + phba->cfg_sg_dma_buf_size) | |
787 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
788 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); | |
789 | ||
790 | /* | |
791 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
792 | * are sg list bdes. Initialize the first two and leave the | |
793 | * rest for queuecommand. | |
794 | */ | |
795 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
796 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
797 | bf_set(lpfc_sli4_sge_len, sgl, sizeof(struct fcp_cmnd)); | |
798 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
799 | sgl->word2 = cpu_to_le32(sgl->word2); | |
800 | sgl->word3 = cpu_to_le32(sgl->word3); | |
801 | sgl++; | |
802 | ||
803 | /* Setup the physical region for the FCP RSP */ | |
804 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
805 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
806 | bf_set(lpfc_sli4_sge_len, sgl, sizeof(struct fcp_rsp)); | |
807 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
808 | sgl->word2 = cpu_to_le32(sgl->word2); | |
809 | sgl->word3 = cpu_to_le32(sgl->word3); | |
810 | ||
811 | /* | |
812 | * Since the IOCB for the FCP I/O is built into this | |
813 | * lpfc_scsi_buf, initialize it with all known data now. | |
814 | */ | |
815 | iocb = &psb->cur_iocbq.iocb; | |
816 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
817 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
818 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
819 | * We are setting the bpl to point to out sgl. An sgl's | |
820 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
821 | */ | |
822 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
823 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
824 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
825 | iocb->ulpBdeCount = 1; | |
826 | iocb->ulpLe = 1; | |
827 | iocb->ulpClass = CLASS3; | |
828 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) | |
829 | pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE; | |
830 | else | |
831 | pdma_phys_bpl1 = 0; | |
832 | psb->dma_phys_bpl = pdma_phys_bpl; | |
833 | phba->sli4_hba.lpfc_scsi_psb_array[index] = psb; | |
834 | if (non_sequential_xri) { | |
835 | status = lpfc_sli4_post_sgl(phba, pdma_phys_bpl, | |
836 | pdma_phys_bpl1, | |
837 | psb->cur_iocbq.sli4_xritag); | |
838 | if (status) { | |
839 | /* Put this back on the abort scsi list */ | |
840 | psb->status = IOSTAT_LOCAL_REJECT; | |
841 | psb->result = IOERR_ABORT_REQUESTED; | |
842 | rc++; | |
843 | } else | |
844 | psb->status = IOSTAT_SUCCESS; | |
845 | /* Put it back into the SCSI buffer list */ | |
846 | lpfc_release_scsi_buf_s4(phba, psb); | |
847 | break; | |
848 | } | |
849 | } | |
850 | if (bcnt) { | |
851 | status = lpfc_sli4_post_scsi_sgl_block(phba, &sblist, bcnt); | |
852 | /* Reset SCSI buffer count for next round of posting */ | |
853 | while (!list_empty(&sblist)) { | |
854 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
855 | list); | |
856 | if (status) { | |
857 | /* Put this back on the abort scsi list */ | |
858 | psb->status = IOSTAT_LOCAL_REJECT; | |
859 | psb->result = IOERR_ABORT_REQUESTED; | |
860 | rc++; | |
861 | } else | |
862 | psb->status = IOSTAT_SUCCESS; | |
863 | /* Put it back into the SCSI buffer list */ | |
864 | lpfc_release_scsi_buf_s4(phba, psb); | |
865 | } | |
866 | } | |
867 | ||
868 | return bcnt + non_sequential_xri - rc; | |
869 | } | |
870 | ||
9bad7671 | 871 | /** |
3772a991 JS |
872 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
873 | * @vport: The virtual port for which this call being executed. | |
874 | * @num_to_allocate: The requested number of buffers to allocate. | |
875 | * | |
876 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
877 | * the lpfc_hba struct. | |
878 | * | |
879 | * Return codes: | |
880 | * int - number of scsi buffers that were allocated. | |
881 | * 0 = failure, less than num_to_alloc is a partial failure. | |
882 | **/ | |
883 | static inline int | |
884 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
885 | { | |
886 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
887 | } | |
888 | ||
889 | /** | |
890 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
891 | * @phba: The HBA for which this call is being executed. | |
9bad7671 JS |
892 | * |
893 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
894 | * and returns to caller. | |
895 | * | |
896 | * Return codes: | |
897 | * NULL - Error | |
898 | * Pointer to lpfc_scsi_buf - Success | |
899 | **/ | |
455c53ec | 900 | static struct lpfc_scsi_buf* |
875fbdfe | 901 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 902 | { |
0bd4ca25 JSEC |
903 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
904 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 905 | unsigned long iflag = 0; |
0bd4ca25 | 906 | |
875fbdfe | 907 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 908 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
909 | if (lpfc_cmd) { |
910 | lpfc_cmd->seg_cnt = 0; | |
911 | lpfc_cmd->nonsg_phys = 0; | |
e2a0a9d6 | 912 | lpfc_cmd->prot_seg_cnt = 0; |
1dcb58e5 | 913 | } |
875fbdfe | 914 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
915 | return lpfc_cmd; |
916 | } | |
dea3101e | 917 | |
9bad7671 | 918 | /** |
3772a991 | 919 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
920 | * @phba: The Hba for which this call is being executed. |
921 | * @psb: The scsi buffer which is being released. | |
922 | * | |
923 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
924 | * lpfc_scsi_buf_list list. | |
925 | **/ | |
0bd4ca25 | 926 | static void |
3772a991 | 927 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 928 | { |
875fbdfe | 929 | unsigned long iflag = 0; |
dea3101e | 930 | |
875fbdfe | 931 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 932 | psb->pCmd = NULL; |
dea3101e | 933 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 934 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e | 935 | } |
936 | ||
da0436e9 JS |
937 | /** |
938 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
939 | * @phba: The Hba for which this call is being executed. | |
940 | * @psb: The scsi buffer which is being released. | |
941 | * | |
942 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
943 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
944 | * and cannot be reused for at least RA_TOV amount of time if it was | |
945 | * aborted. | |
946 | **/ | |
947 | static void | |
948 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
949 | { | |
950 | unsigned long iflag = 0; | |
951 | ||
952 | if (psb->status == IOSTAT_LOCAL_REJECT | |
953 | && psb->result == IOERR_ABORT_REQUESTED) { | |
954 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
955 | iflag); | |
956 | psb->pCmd = NULL; | |
957 | list_add_tail(&psb->list, | |
958 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
959 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
960 | iflag); | |
961 | } else { | |
962 | ||
963 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
964 | psb->pCmd = NULL; | |
965 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); | |
966 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); | |
967 | } | |
968 | } | |
969 | ||
9bad7671 | 970 | /** |
3772a991 JS |
971 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
972 | * @phba: The Hba for which this call is being executed. | |
973 | * @psb: The scsi buffer which is being released. | |
974 | * | |
975 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
976 | * lpfc_scsi_buf_list list. | |
977 | **/ | |
978 | static void | |
979 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
980 | { | |
981 | ||
982 | phba->lpfc_release_scsi_buf(phba, psb); | |
983 | } | |
984 | ||
985 | /** | |
986 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
987 | * @phba: The Hba for which this call is being executed. |
988 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
989 | * | |
990 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
991 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
992 | * through sg elements and format the bdea. This routine also initializes all | |
993 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
994 | * |
995 | * Return codes: | |
996 | * 1 - Error | |
997 | * 0 - Success | |
998 | **/ | |
dea3101e | 999 | static int |
3772a991 | 1000 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 1001 | { |
1002 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1003 | struct scatterlist *sgel = NULL; | |
1004 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1005 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1006 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
34b02dcd | 1007 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1008 | dma_addr_t physaddr; |
34b02dcd | 1009 | uint32_t num_bde = 0; |
a0b4f78f | 1010 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 1011 | |
1012 | /* | |
1013 | * There are three possibilities here - use scatter-gather segment, use | |
1014 | * the single mapping, or neither. Start the lpfc command prep by | |
1015 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1016 | * data bde entry. | |
1017 | */ | |
1018 | bpl += 2; | |
c59fd9eb | 1019 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 1020 | /* |
1021 | * The driver stores the segment count returned from pci_map_sg | |
1022 | * because this a count of dma-mappings used to map the use_sg | |
1023 | * pages. They are not guaranteed to be the same for those | |
1024 | * architectures that implement an IOMMU. | |
1025 | */ | |
dea3101e | 1026 | |
c59fd9eb FT |
1027 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1028 | scsi_sg_count(scsi_cmnd), datadir); | |
1029 | if (unlikely(!nseg)) | |
1030 | return 1; | |
1031 | ||
a0b4f78f | 1032 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1033 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1034 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1035 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1036 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1037 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1038 | lpfc_cmd->seg_cnt); |
a0b4f78f | 1039 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 1040 | return 1; |
1041 | } | |
1042 | ||
1043 | /* | |
1044 | * The driver established a maximum scatter-gather segment count | |
1045 | * during probe that limits the number of sg elements in any | |
1046 | * single scsi command. Just run through the seg_cnt and format | |
1047 | * the bde's. | |
34b02dcd JS |
1048 | * When using SLI-3 the driver will try to fit all the BDEs into |
1049 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1050 | * does for SLI-2 mode. | |
dea3101e | 1051 | */ |
34b02dcd | 1052 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1053 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1054 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1055 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
34b02dcd JS |
1056 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1057 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1058 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1059 | data_bde->addrLow = putPaddrLow(physaddr); | |
1060 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1061 | data_bde++; | |
1062 | } else { | |
1063 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1064 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1065 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1066 | bpl->addrLow = | |
1067 | le32_to_cpu(putPaddrLow(physaddr)); | |
1068 | bpl->addrHigh = | |
1069 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1070 | bpl++; | |
1071 | } | |
dea3101e | 1072 | } |
c59fd9eb | 1073 | } |
dea3101e | 1074 | |
1075 | /* | |
1076 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1077 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1078 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1079 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1080 | */ |
e2a0a9d6 JS |
1081 | if (phba->sli_rev == 3 && |
1082 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
34b02dcd JS |
1083 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1084 | /* | |
1085 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1086 | * This I/O has more than 3 BDE so the 1st data bde will | |
1087 | * be a BPL that is filled in here. | |
1088 | */ | |
1089 | physaddr = lpfc_cmd->dma_handle; | |
1090 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1091 | data_bde->tus.f.bdeSize = (num_bde * | |
1092 | sizeof(struct ulp_bde64)); | |
1093 | physaddr += (sizeof(struct fcp_cmnd) + | |
1094 | sizeof(struct fcp_rsp) + | |
1095 | (2 * sizeof(struct ulp_bde64))); | |
1096 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1097 | data_bde->addrLow = putPaddrLow(physaddr); | |
1098 | /* ebde count includes the responce bde and data bpl */ | |
1099 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; | |
1100 | } else { | |
1101 | /* ebde count includes the responce bde and data bdes */ | |
1102 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); | |
1103 | } | |
1104 | } else { | |
1105 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1106 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
1107 | } | |
09372820 | 1108 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1109 | |
1110 | /* | |
1111 | * Due to difference in data length between DIF/non-DIF paths, | |
1112 | * we need to set word 4 of IOCB here | |
1113 | */ | |
a257bf90 | 1114 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1115 | return 0; |
1116 | } | |
1117 | ||
1118 | /* | |
1119 | * Given a scsi cmnd, determine the BlockGuard profile to be used | |
1120 | * with the cmd | |
1121 | */ | |
1122 | static int | |
6a9c52cf | 1123 | lpfc_sc_to_sli_prof(struct lpfc_hba *phba, struct scsi_cmnd *sc) |
e2a0a9d6 JS |
1124 | { |
1125 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
1126 | uint8_t ret_prof = LPFC_PROF_INVALID; | |
1127 | ||
1128 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
1129 | switch (scsi_get_prot_op(sc)) { | |
1130 | case SCSI_PROT_READ_INSERT: | |
1131 | case SCSI_PROT_WRITE_STRIP: | |
1132 | ret_prof = LPFC_PROF_AST2; | |
1133 | break; | |
1134 | ||
1135 | case SCSI_PROT_READ_STRIP: | |
1136 | case SCSI_PROT_WRITE_INSERT: | |
1137 | ret_prof = LPFC_PROF_A1; | |
1138 | break; | |
1139 | ||
c6af4042 MP |
1140 | case SCSI_PROT_READ_PASS: |
1141 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
1142 | ret_prof = LPFC_PROF_AST1; |
1143 | break; | |
1144 | ||
e2a0a9d6 JS |
1145 | case SCSI_PROT_NORMAL: |
1146 | default: | |
6a9c52cf JS |
1147 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1148 | "9063 BLKGRD:Bad op/guard:%d/%d combination\n", | |
e2a0a9d6 JS |
1149 | scsi_get_prot_op(sc), guard_type); |
1150 | break; | |
1151 | ||
1152 | } | |
1153 | } else if (guard_type == SHOST_DIX_GUARD_CRC) { | |
1154 | switch (scsi_get_prot_op(sc)) { | |
1155 | case SCSI_PROT_READ_STRIP: | |
1156 | case SCSI_PROT_WRITE_INSERT: | |
1157 | ret_prof = LPFC_PROF_A1; | |
1158 | break; | |
1159 | ||
1160 | case SCSI_PROT_READ_PASS: | |
1161 | case SCSI_PROT_WRITE_PASS: | |
1162 | ret_prof = LPFC_PROF_C1; | |
1163 | break; | |
1164 | ||
e2a0a9d6 JS |
1165 | case SCSI_PROT_READ_INSERT: |
1166 | case SCSI_PROT_WRITE_STRIP: | |
1167 | case SCSI_PROT_NORMAL: | |
1168 | default: | |
6a9c52cf JS |
1169 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1170 | "9075 BLKGRD: Bad op/guard:%d/%d combination\n", | |
e2a0a9d6 JS |
1171 | scsi_get_prot_op(sc), guard_type); |
1172 | break; | |
1173 | } | |
1174 | } else { | |
1175 | /* unsupported format */ | |
1176 | BUG(); | |
1177 | } | |
1178 | ||
1179 | return ret_prof; | |
1180 | } | |
1181 | ||
1182 | struct scsi_dif_tuple { | |
1183 | __be16 guard_tag; /* Checksum */ | |
1184 | __be16 app_tag; /* Opaque storage */ | |
1185 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
1186 | }; | |
1187 | ||
1188 | static inline unsigned | |
1189 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
1190 | { | |
1191 | return sc->device->sector_size; | |
1192 | } | |
1193 | ||
1194 | /** | |
1195 | * lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command | |
1196 | * @sc: in: SCSI command | |
3621a710 JS |
1197 | * @apptagmask: out: app tag mask |
1198 | * @apptagval: out: app tag value | |
1199 | * @reftag: out: ref tag (reference tag) | |
e2a0a9d6 JS |
1200 | * |
1201 | * Description: | |
98a1708d MO |
1202 | * Extract DIF parameters from the command if possible. Otherwise, |
1203 | * use default parameters. | |
e2a0a9d6 JS |
1204 | * |
1205 | **/ | |
1206 | static inline void | |
1207 | lpfc_get_cmd_dif_parms(struct scsi_cmnd *sc, uint16_t *apptagmask, | |
1208 | uint16_t *apptagval, uint32_t *reftag) | |
1209 | { | |
1210 | struct scsi_dif_tuple *spt; | |
1211 | unsigned char op = scsi_get_prot_op(sc); | |
1212 | unsigned int protcnt = scsi_prot_sg_count(sc); | |
1213 | static int cnt; | |
1214 | ||
1215 | if (protcnt && (op == SCSI_PROT_WRITE_STRIP || | |
c6af4042 | 1216 | op == SCSI_PROT_WRITE_PASS)) { |
e2a0a9d6 JS |
1217 | |
1218 | cnt++; | |
1219 | spt = page_address(sg_page(scsi_prot_sglist(sc))) + | |
1220 | scsi_prot_sglist(sc)[0].offset; | |
1221 | *apptagmask = 0; | |
1222 | *apptagval = 0; | |
1223 | *reftag = cpu_to_be32(spt->ref_tag); | |
1224 | ||
1225 | } else { | |
1226 | /* SBC defines ref tag to be lower 32bits of LBA */ | |
1227 | *reftag = (uint32_t) (0xffffffff & scsi_get_lba(sc)); | |
1228 | *apptagmask = 0; | |
1229 | *apptagval = 0; | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | /* | |
1234 | * This function sets up buffer list for protection groups of | |
1235 | * type LPFC_PG_TYPE_NO_DIF | |
1236 | * | |
1237 | * This is usually used when the HBA is instructed to generate | |
1238 | * DIFs and insert them into data stream (or strip DIF from | |
1239 | * incoming data stream) | |
1240 | * | |
1241 | * The buffer list consists of just one protection group described | |
1242 | * below: | |
1243 | * +-------------------------+ | |
1244 | * start of prot group --> | PDE_1 | | |
1245 | * +-------------------------+ | |
1246 | * | Data BDE | | |
1247 | * +-------------------------+ | |
1248 | * |more Data BDE's ... (opt)| | |
1249 | * +-------------------------+ | |
1250 | * | |
1251 | * @sc: pointer to scsi command we're working on | |
1252 | * @bpl: pointer to buffer list for protection groups | |
1253 | * @datacnt: number of segments of data that have been dma mapped | |
1254 | * | |
1255 | * Note: Data s/g buffers have been dma mapped | |
1256 | */ | |
1257 | static int | |
1258 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1259 | struct ulp_bde64 *bpl, int datasegcnt) | |
1260 | { | |
1261 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
1262 | struct lpfc_pde *pde1 = NULL; | |
1263 | dma_addr_t physaddr; | |
1264 | int i = 0, num_bde = 0; | |
1265 | int datadir = sc->sc_data_direction; | |
1266 | int prof = LPFC_PROF_INVALID; | |
1267 | unsigned blksize; | |
1268 | uint32_t reftag; | |
1269 | uint16_t apptagmask, apptagval; | |
1270 | ||
1271 | pde1 = (struct lpfc_pde *) bpl; | |
6a9c52cf | 1272 | prof = lpfc_sc_to_sli_prof(phba, sc); |
e2a0a9d6 JS |
1273 | |
1274 | if (prof == LPFC_PROF_INVALID) | |
1275 | goto out; | |
1276 | ||
1277 | /* extract some info from the scsi command for PDE1*/ | |
1278 | blksize = lpfc_cmd_blksize(sc); | |
1279 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1280 | ||
1281 | /* setup PDE1 with what we have */ | |
1282 | lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize, | |
1283 | BG_EC_STOP_ERR); | |
1284 | lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag); | |
1285 | ||
1286 | num_bde++; | |
1287 | bpl++; | |
1288 | ||
1289 | /* assumption: caller has already run dma_map_sg on command data */ | |
1290 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
1291 | physaddr = sg_dma_address(sgde); | |
1292 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
1293 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
1294 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
1295 | if (datadir == DMA_TO_DEVICE) | |
1296 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1297 | else | |
1298 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1299 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1300 | bpl++; | |
1301 | num_bde++; | |
1302 | } | |
1303 | ||
1304 | out: | |
1305 | return num_bde; | |
1306 | } | |
1307 | ||
1308 | /* | |
1309 | * This function sets up buffer list for protection groups of | |
1310 | * type LPFC_PG_TYPE_DIF_BUF | |
1311 | * | |
1312 | * This is usually used when DIFs are in their own buffers, | |
1313 | * separate from the data. The HBA can then by instructed | |
1314 | * to place the DIFs in the outgoing stream. For read operations, | |
1315 | * The HBA could extract the DIFs and place it in DIF buffers. | |
1316 | * | |
1317 | * The buffer list for this type consists of one or more of the | |
1318 | * protection groups described below: | |
1319 | * +-------------------------+ | |
1320 | * start of first prot group --> | PDE_1 | | |
1321 | * +-------------------------+ | |
1322 | * | PDE_3 (Prot BDE) | | |
1323 | * +-------------------------+ | |
1324 | * | Data BDE | | |
1325 | * +-------------------------+ | |
1326 | * |more Data BDE's ... (opt)| | |
1327 | * +-------------------------+ | |
1328 | * start of new prot group --> | PDE_1 | | |
1329 | * +-------------------------+ | |
1330 | * | ... | | |
1331 | * +-------------------------+ | |
1332 | * | |
1333 | * @sc: pointer to scsi command we're working on | |
1334 | * @bpl: pointer to buffer list for protection groups | |
1335 | * @datacnt: number of segments of data that have been dma mapped | |
1336 | * @protcnt: number of segment of protection data that have been dma mapped | |
1337 | * | |
1338 | * Note: It is assumed that both data and protection s/g buffers have been | |
1339 | * mapped for DMA | |
1340 | */ | |
1341 | static int | |
1342 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1343 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
1344 | { | |
1345 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
1346 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
1347 | struct lpfc_pde *pde1 = NULL; | |
1348 | struct ulp_bde64 *prot_bde = NULL; | |
1349 | dma_addr_t dataphysaddr, protphysaddr; | |
1350 | unsigned short curr_data = 0, curr_prot = 0; | |
1351 | unsigned int split_offset, protgroup_len; | |
1352 | unsigned int protgrp_blks, protgrp_bytes; | |
1353 | unsigned int remainder, subtotal; | |
1354 | int prof = LPFC_PROF_INVALID; | |
1355 | int datadir = sc->sc_data_direction; | |
1356 | unsigned char pgdone = 0, alldone = 0; | |
1357 | unsigned blksize; | |
1358 | uint32_t reftag; | |
1359 | uint16_t apptagmask, apptagval; | |
1360 | int num_bde = 0; | |
1361 | ||
1362 | sgpe = scsi_prot_sglist(sc); | |
1363 | sgde = scsi_sglist(sc); | |
1364 | ||
1365 | if (!sgpe || !sgde) { | |
1366 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1367 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
1368 | sgpe, sgde); | |
1369 | return 0; | |
1370 | } | |
1371 | ||
6a9c52cf | 1372 | prof = lpfc_sc_to_sli_prof(phba, sc); |
e2a0a9d6 JS |
1373 | if (prof == LPFC_PROF_INVALID) |
1374 | goto out; | |
1375 | ||
1376 | /* extract some info from the scsi command for PDE1*/ | |
1377 | blksize = lpfc_cmd_blksize(sc); | |
1378 | lpfc_get_cmd_dif_parms(sc, &apptagmask, &apptagval, &reftag); | |
1379 | ||
1380 | split_offset = 0; | |
1381 | do { | |
1382 | /* setup the first PDE_1 */ | |
1383 | pde1 = (struct lpfc_pde *) bpl; | |
1384 | ||
1385 | lpfc_pde_set_bg_parms(pde1, LPFC_PDE1_DESCRIPTOR, prof, blksize, | |
1386 | BG_EC_STOP_ERR); | |
1387 | lpfc_pde_set_dif_parms(pde1, apptagmask, apptagval, reftag); | |
1388 | ||
1389 | num_bde++; | |
1390 | bpl++; | |
1391 | ||
1392 | /* setup the first BDE that points to protection buffer */ | |
1393 | prot_bde = (struct ulp_bde64 *) bpl; | |
1394 | protphysaddr = sg_dma_address(sgpe); | |
1395 | prot_bde->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
1396 | prot_bde->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
1397 | protgroup_len = sg_dma_len(sgpe); | |
1398 | ||
1399 | ||
1400 | /* must be integer multiple of the DIF block length */ | |
1401 | BUG_ON(protgroup_len % 8); | |
1402 | ||
1403 | protgrp_blks = protgroup_len / 8; | |
1404 | protgrp_bytes = protgrp_blks * blksize; | |
1405 | ||
1406 | prot_bde->tus.f.bdeSize = protgroup_len; | |
1407 | if (datadir == DMA_TO_DEVICE) | |
1408 | prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1409 | else | |
1410 | prot_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1411 | prot_bde->tus.w = le32_to_cpu(bpl->tus.w); | |
1412 | ||
1413 | curr_prot++; | |
1414 | num_bde++; | |
1415 | ||
1416 | /* setup BDE's for data blocks associated with DIF data */ | |
1417 | pgdone = 0; | |
1418 | subtotal = 0; /* total bytes processed for current prot grp */ | |
1419 | while (!pgdone) { | |
1420 | if (!sgde) { | |
6a9c52cf JS |
1421 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1422 | "9065 BLKGRD:%s Invalid data segment\n", | |
e2a0a9d6 JS |
1423 | __func__); |
1424 | return 0; | |
1425 | } | |
1426 | bpl++; | |
1427 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
1428 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
1429 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
1430 | ||
1431 | remainder = sg_dma_len(sgde) - split_offset; | |
1432 | ||
1433 | if ((subtotal + remainder) <= protgrp_bytes) { | |
1434 | /* we can use this whole buffer */ | |
1435 | bpl->tus.f.bdeSize = remainder; | |
1436 | split_offset = 0; | |
1437 | ||
1438 | if ((subtotal + remainder) == protgrp_bytes) | |
1439 | pgdone = 1; | |
1440 | } else { | |
1441 | /* must split this buffer with next prot grp */ | |
1442 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
1443 | split_offset += bpl->tus.f.bdeSize; | |
1444 | } | |
1445 | ||
1446 | subtotal += bpl->tus.f.bdeSize; | |
1447 | ||
1448 | if (datadir == DMA_TO_DEVICE) | |
1449 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1450 | else | |
1451 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1452 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1453 | ||
1454 | num_bde++; | |
1455 | curr_data++; | |
1456 | ||
1457 | if (split_offset) | |
1458 | break; | |
1459 | ||
1460 | /* Move to the next s/g segment if possible */ | |
1461 | sgde = sg_next(sgde); | |
1462 | } | |
1463 | ||
1464 | /* are we done ? */ | |
1465 | if (curr_prot == protcnt) { | |
1466 | alldone = 1; | |
1467 | } else if (curr_prot < protcnt) { | |
1468 | /* advance to next prot buffer */ | |
1469 | sgpe = sg_next(sgpe); | |
1470 | bpl++; | |
1471 | ||
1472 | /* update the reference tag */ | |
1473 | reftag += protgrp_blks; | |
1474 | } else { | |
1475 | /* if we're here, we have a bug */ | |
6a9c52cf JS |
1476 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1477 | "9054 BLKGRD: bug in %s\n", __func__); | |
e2a0a9d6 JS |
1478 | } |
1479 | ||
1480 | } while (!alldone); | |
1481 | ||
1482 | out: | |
1483 | ||
1484 | ||
1485 | return num_bde; | |
1486 | } | |
1487 | /* | |
1488 | * Given a SCSI command that supports DIF, determine composition of protection | |
1489 | * groups involved in setting up buffer lists | |
1490 | * | |
1491 | * Returns: | |
1492 | * for DIF (for both read and write) | |
1493 | * */ | |
1494 | static int | |
1495 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
1496 | { | |
1497 | int ret = LPFC_PG_TYPE_INVALID; | |
1498 | unsigned char op = scsi_get_prot_op(sc); | |
1499 | ||
1500 | switch (op) { | |
1501 | case SCSI_PROT_READ_STRIP: | |
1502 | case SCSI_PROT_WRITE_INSERT: | |
1503 | ret = LPFC_PG_TYPE_NO_DIF; | |
1504 | break; | |
1505 | case SCSI_PROT_READ_INSERT: | |
1506 | case SCSI_PROT_WRITE_STRIP: | |
1507 | case SCSI_PROT_READ_PASS: | |
1508 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
1509 | ret = LPFC_PG_TYPE_DIF_BUF; |
1510 | break; | |
1511 | default: | |
1512 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1513 | "9021 Unsupported protection op:%d\n", op); | |
1514 | break; | |
1515 | } | |
1516 | ||
1517 | return ret; | |
1518 | } | |
1519 | ||
1520 | /* | |
1521 | * This is the protection/DIF aware version of | |
1522 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
1523 | * two functions eventually, but for now, it's here | |
1524 | */ | |
1525 | static int | |
1526 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, | |
1527 | struct lpfc_scsi_buf *lpfc_cmd) | |
1528 | { | |
1529 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1530 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1531 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1532 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1533 | uint32_t num_bde = 0; | |
1534 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
1535 | int prot_group_type = 0; | |
1536 | int diflen, fcpdl; | |
1537 | unsigned blksize; | |
1538 | ||
1539 | /* | |
1540 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
1541 | * fcp_rsp regions to the first data bde entry | |
1542 | */ | |
1543 | bpl += 2; | |
1544 | if (scsi_sg_count(scsi_cmnd)) { | |
1545 | /* | |
1546 | * The driver stores the segment count returned from pci_map_sg | |
1547 | * because this a count of dma-mappings used to map the use_sg | |
1548 | * pages. They are not guaranteed to be the same for those | |
1549 | * architectures that implement an IOMMU. | |
1550 | */ | |
1551 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
1552 | scsi_sglist(scsi_cmnd), | |
1553 | scsi_sg_count(scsi_cmnd), datadir); | |
1554 | if (unlikely(!datasegcnt)) | |
1555 | return 1; | |
1556 | ||
1557 | lpfc_cmd->seg_cnt = datasegcnt; | |
1558 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1559 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1560 | "9067 BLKGRD: %s: Too many sg segments" | |
1561 | " from dma_map_sg. Config %d, seg_cnt" | |
1562 | " %d\n", | |
e2a0a9d6 JS |
1563 | __func__, phba->cfg_sg_seg_cnt, |
1564 | lpfc_cmd->seg_cnt); | |
1565 | scsi_dma_unmap(scsi_cmnd); | |
1566 | return 1; | |
1567 | } | |
1568 | ||
1569 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
1570 | ||
1571 | switch (prot_group_type) { | |
1572 | case LPFC_PG_TYPE_NO_DIF: | |
1573 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, | |
1574 | datasegcnt); | |
1575 | /* we shoud have 2 or more entries in buffer list */ | |
1576 | if (num_bde < 2) | |
1577 | goto err; | |
1578 | break; | |
1579 | case LPFC_PG_TYPE_DIF_BUF:{ | |
1580 | /* | |
1581 | * This type indicates that protection buffers are | |
1582 | * passed to the driver, so that needs to be prepared | |
1583 | * for DMA | |
1584 | */ | |
1585 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
1586 | scsi_prot_sglist(scsi_cmnd), | |
1587 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
1588 | if (unlikely(!protsegcnt)) { | |
1589 | scsi_dma_unmap(scsi_cmnd); | |
1590 | return 1; | |
1591 | } | |
1592 | ||
1593 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
1594 | if (lpfc_cmd->prot_seg_cnt | |
1595 | > phba->cfg_prot_sg_seg_cnt) { | |
6a9c52cf JS |
1596 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1597 | "9068 BLKGRD: %s: Too many prot sg " | |
1598 | "segments from dma_map_sg. Config %d," | |
e2a0a9d6 JS |
1599 | "prot_seg_cnt %d\n", __func__, |
1600 | phba->cfg_prot_sg_seg_cnt, | |
1601 | lpfc_cmd->prot_seg_cnt); | |
1602 | dma_unmap_sg(&phba->pcidev->dev, | |
1603 | scsi_prot_sglist(scsi_cmnd), | |
1604 | scsi_prot_sg_count(scsi_cmnd), | |
1605 | datadir); | |
1606 | scsi_dma_unmap(scsi_cmnd); | |
1607 | return 1; | |
1608 | } | |
1609 | ||
1610 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
1611 | datasegcnt, protsegcnt); | |
1612 | /* we shoud have 3 or more entries in buffer list */ | |
1613 | if (num_bde < 3) | |
1614 | goto err; | |
1615 | break; | |
1616 | } | |
1617 | case LPFC_PG_TYPE_INVALID: | |
1618 | default: | |
1619 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1620 | "9022 Unexpected protection group %i\n", | |
1621 | prot_group_type); | |
1622 | return 1; | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | /* | |
1627 | * Finish initializing those IOCB fields that are dependent on the | |
1628 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
1629 | * reinitialized since all iocb memory resources are used many times | |
1630 | * for transmit, receive, and continuation bpl's. | |
1631 | */ | |
1632 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
1633 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
1634 | iocb_cmd->ulpBdeCount = 1; | |
1635 | iocb_cmd->ulpLe = 1; | |
1636 | ||
1637 | fcpdl = scsi_bufflen(scsi_cmnd); | |
1638 | ||
1639 | if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) { | |
1640 | /* | |
1641 | * We are in DIF Type 1 mode | |
1642 | * Every data block has a 8 byte DIF (trailer) | |
1643 | * attached to it. Must ajust FCP data length | |
1644 | */ | |
1645 | blksize = lpfc_cmd_blksize(scsi_cmnd); | |
1646 | diflen = (fcpdl / blksize) * 8; | |
1647 | fcpdl += diflen; | |
1648 | } | |
1649 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
1650 | ||
1651 | /* | |
1652 | * Due to difference in data length between DIF/non-DIF paths, | |
1653 | * we need to set word 4 of IOCB here | |
1654 | */ | |
1655 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
1656 | ||
dea3101e | 1657 | return 0; |
e2a0a9d6 JS |
1658 | err: |
1659 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1660 | "9023 Could not setup all needed BDE's" | |
1661 | "prot_group_type=%d, num_bde=%d\n", | |
1662 | prot_group_type, num_bde); | |
1663 | return 1; | |
1664 | } | |
1665 | ||
1666 | /* | |
1667 | * This function checks for BlockGuard errors detected by | |
1668 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
1669 | * sense buffer will be set accordingly, paired with | |
1670 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
1671 | * detected corruption. | |
1672 | * | |
1673 | * Returns: | |
1674 | * 0 - No error found | |
1675 | * 1 - BlockGuard error found | |
1676 | * -1 - Internal error (bad profile, ...etc) | |
1677 | */ | |
1678 | static int | |
1679 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
1680 | struct lpfc_iocbq *pIocbOut) | |
1681 | { | |
1682 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
1683 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
1684 | int ret = 0; | |
1685 | uint32_t bghm = bgf->bghm; | |
1686 | uint32_t bgstat = bgf->bgstat; | |
1687 | uint64_t failing_sector = 0; | |
1688 | ||
6a9c52cf JS |
1689 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd" |
1690 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
e2a0a9d6 | 1691 | "bgstat=0x%x bghm=0x%x\n", |
87b5c328 | 1692 | cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd), |
83096ebf | 1693 | blk_rq_sectors(cmd->request), bgstat, bghm); |
e2a0a9d6 JS |
1694 | |
1695 | spin_lock(&_dump_buf_lock); | |
1696 | if (!_dump_buf_done) { | |
6a9c52cf JS |
1697 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
1698 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 1699 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 1700 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
1701 | |
1702 | /* If we have a prot sgl, save the DIF buffer */ | |
1703 | if (lpfc_prot_group_type(phba, cmd) == | |
1704 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
1705 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
1706 | "Saving DIF for %u blocks to debugfs\n", | |
1707 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
1708 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
1709 | } |
1710 | ||
1711 | _dump_buf_done = 1; | |
1712 | } | |
1713 | spin_unlock(&_dump_buf_lock); | |
1714 | ||
1715 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
1716 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1717 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid" |
1718 | " BlockGuard profile. bgstat:0x%x\n", | |
1719 | bgstat); | |
e2a0a9d6 JS |
1720 | ret = (-1); |
1721 | goto out; | |
1722 | } | |
1723 | ||
1724 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
1725 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1726 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: " |
1727 | "Invalid BlockGuard DIF Block. bgstat:0x%x\n", | |
e2a0a9d6 JS |
1728 | bgstat); |
1729 | ret = (-1); | |
1730 | goto out; | |
1731 | } | |
1732 | ||
1733 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
1734 | ret = 1; | |
1735 | ||
1736 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1737 | 0x10, 0x1); | |
1c9fbafc | 1738 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1739 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1740 | phba->bg_guard_err_cnt++; | |
6a9c52cf JS |
1741 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1742 | "9055 BLKGRD: guard_tag error\n"); | |
e2a0a9d6 JS |
1743 | } |
1744 | ||
1745 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
1746 | ret = 1; | |
1747 | ||
1748 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1749 | 0x10, 0x3); | |
1c9fbafc | 1750 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1751 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1752 | ||
1753 | phba->bg_reftag_err_cnt++; | |
6a9c52cf JS |
1754 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1755 | "9056 BLKGRD: ref_tag error\n"); | |
e2a0a9d6 JS |
1756 | } |
1757 | ||
1758 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
1759 | ret = 1; | |
1760 | ||
1761 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
1762 | 0x10, 0x2); | |
1c9fbafc | 1763 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
1764 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
1765 | ||
1766 | phba->bg_apptag_err_cnt++; | |
6a9c52cf JS |
1767 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1768 | "9061 BLKGRD: app_tag error\n"); | |
e2a0a9d6 JS |
1769 | } |
1770 | ||
1771 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
1772 | /* | |
1773 | * setup sense data descriptor 0 per SPC-4 as an information | |
1774 | * field, and put the failing LBA in it | |
1775 | */ | |
1776 | cmd->sense_buffer[8] = 0; /* Information */ | |
1777 | cmd->sense_buffer[9] = 0xa; /* Add. length */ | |
2344b5b6 | 1778 | bghm /= cmd->device->sector_size; |
e2a0a9d6 JS |
1779 | |
1780 | failing_sector = scsi_get_lba(cmd); | |
1781 | failing_sector += bghm; | |
1782 | ||
1783 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[10]); | |
1784 | } | |
1785 | ||
1786 | if (!ret) { | |
1787 | /* No error was reported - problem in FW? */ | |
1788 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
1789 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1790 | "9057 BLKGRD: no errors reported!\n"); | |
e2a0a9d6 JS |
1791 | } |
1792 | ||
1793 | out: | |
1794 | return ret; | |
dea3101e | 1795 | } |
1796 | ||
da0436e9 JS |
1797 | /** |
1798 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
1799 | * @phba: The Hba for which this call is being executed. | |
1800 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1801 | * | |
1802 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
1803 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
1804 | * | |
1805 | * Return codes: | |
1806 | * 1 - Error | |
1807 | * 0 - Success | |
1808 | **/ | |
1809 | static int | |
1810 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
1811 | { | |
1812 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1813 | struct scatterlist *sgel = NULL; | |
1814 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1815 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
1816 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1817 | dma_addr_t physaddr; | |
1818 | uint32_t num_bde = 0; | |
1819 | uint32_t dma_len; | |
1820 | uint32_t dma_offset = 0; | |
1821 | int nseg; | |
1822 | ||
1823 | /* | |
1824 | * There are three possibilities here - use scatter-gather segment, use | |
1825 | * the single mapping, or neither. Start the lpfc command prep by | |
1826 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1827 | * data bde entry. | |
1828 | */ | |
1829 | if (scsi_sg_count(scsi_cmnd)) { | |
1830 | /* | |
1831 | * The driver stores the segment count returned from pci_map_sg | |
1832 | * because this a count of dma-mappings used to map the use_sg | |
1833 | * pages. They are not guaranteed to be the same for those | |
1834 | * architectures that implement an IOMMU. | |
1835 | */ | |
1836 | ||
1837 | nseg = scsi_dma_map(scsi_cmnd); | |
1838 | if (unlikely(!nseg)) | |
1839 | return 1; | |
1840 | sgl += 1; | |
1841 | /* clear the last flag in the fcp_rsp map entry */ | |
1842 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1843 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1844 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1845 | sgl += 1; | |
1846 | ||
1847 | lpfc_cmd->seg_cnt = nseg; | |
1848 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1849 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
1850 | " %s: Too many sg segments from " | |
1851 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
1852 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 JS |
1853 | lpfc_cmd->seg_cnt); |
1854 | scsi_dma_unmap(scsi_cmnd); | |
1855 | return 1; | |
1856 | } | |
1857 | ||
1858 | /* | |
1859 | * The driver established a maximum scatter-gather segment count | |
1860 | * during probe that limits the number of sg elements in any | |
1861 | * single scsi command. Just run through the seg_cnt and format | |
1862 | * the sge's. | |
1863 | * When using SLI-3 the driver will try to fit all the BDEs into | |
1864 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1865 | * does for SLI-2 mode. | |
1866 | */ | |
1867 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
1868 | physaddr = sg_dma_address(sgel); | |
1869 | dma_len = sg_dma_len(sgel); | |
1870 | bf_set(lpfc_sli4_sge_len, sgl, sg_dma_len(sgel)); | |
1871 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); | |
1872 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
1873 | if ((num_bde + 1) == nseg) | |
1874 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1875 | else | |
1876 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
1877 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
1878 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1879 | sgl->word3 = cpu_to_le32(sgl->word3); | |
1880 | dma_offset += dma_len; | |
1881 | sgl++; | |
1882 | } | |
1883 | } else { | |
1884 | sgl += 1; | |
1885 | /* clear the last flag in the fcp_rsp map entry */ | |
1886 | sgl->word2 = le32_to_cpu(sgl->word2); | |
1887 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
1888 | sgl->word2 = cpu_to_le32(sgl->word2); | |
1889 | } | |
1890 | ||
1891 | /* | |
1892 | * Finish initializing those IOCB fields that are dependent on the | |
1893 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
1894 | * explicitly reinitialized. | |
1895 | * all iocb memory resources are reused. | |
1896 | */ | |
1897 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
1898 | ||
1899 | /* | |
1900 | * Due to difference in data length between DIF/non-DIF paths, | |
1901 | * we need to set word 4 of IOCB here | |
1902 | */ | |
1903 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
1904 | return 0; | |
1905 | } | |
1906 | ||
3772a991 JS |
1907 | /** |
1908 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
1909 | * @phba: The Hba for which this call is being executed. | |
1910 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1911 | * | |
1912 | * This routine wraps the actual DMA mapping function pointer from the | |
1913 | * lpfc_hba struct. | |
1914 | * | |
1915 | * Return codes: | |
1916 | * 1 - Error | |
1917 | * 0 - Success | |
1918 | **/ | |
1919 | static inline int | |
1920 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
1921 | { | |
1922 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
1923 | } | |
1924 | ||
ea2151b4 | 1925 | /** |
3621a710 | 1926 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
1927 | * @phba: Pointer to hba context object. |
1928 | * @vport: Pointer to vport object. | |
1929 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
1930 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
1931 | * | |
1932 | * This function posts an event when there is a SCSI command reporting | |
1933 | * error from the scsi device. | |
1934 | **/ | |
1935 | static void | |
1936 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
1937 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
1938 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
1939 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
1940 | uint32_t resp_info = fcprsp->rspStatus2; | |
1941 | uint32_t scsi_status = fcprsp->rspStatus3; | |
1942 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
1943 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
1944 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
1945 | unsigned long flags; | |
1946 | ||
1947 | /* If there is queuefull or busy condition send a scsi event */ | |
1948 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
1949 | (cmnd->result == SAM_STAT_BUSY)) { | |
1950 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1951 | if (!fast_path_evt) | |
1952 | return; | |
1953 | fast_path_evt->un.scsi_evt.event_type = | |
1954 | FC_REG_SCSI_EVENT; | |
1955 | fast_path_evt->un.scsi_evt.subcategory = | |
1956 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
1957 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
1958 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
1959 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
1960 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1961 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
1962 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1963 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
1964 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
1965 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1966 | if (!fast_path_evt) | |
1967 | return; | |
1968 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
1969 | FC_REG_SCSI_EVENT; | |
1970 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
1971 | LPFC_EVENT_CHECK_COND; | |
1972 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
1973 | cmnd->device->lun; | |
1974 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
1975 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1976 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
1977 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1978 | fast_path_evt->un.check_cond_evt.sense_key = | |
1979 | cmnd->sense_buffer[2] & 0xf; | |
1980 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
1981 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
1982 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
1983 | fcpi_parm && | |
1984 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
1985 | ((scsi_status == SAM_STAT_GOOD) && | |
1986 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
1987 | /* | |
1988 | * If status is good or resid does not match with fcp_param and | |
1989 | * there is valid fcpi_parm, then there is a read_check error | |
1990 | */ | |
1991 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
1992 | if (!fast_path_evt) | |
1993 | return; | |
1994 | fast_path_evt->un.read_check_error.header.event_type = | |
1995 | FC_REG_FABRIC_EVENT; | |
1996 | fast_path_evt->un.read_check_error.header.subcategory = | |
1997 | LPFC_EVENT_FCPRDCHKERR; | |
1998 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
1999 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2000 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
2001 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2002 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
2003 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
2004 | fast_path_evt->un.read_check_error.fcpiparam = | |
2005 | fcpi_parm; | |
2006 | } else | |
2007 | return; | |
2008 | ||
2009 | fast_path_evt->vport = vport; | |
2010 | spin_lock_irqsave(&phba->hbalock, flags); | |
2011 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
2012 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2013 | lpfc_worker_wake_up(phba); | |
2014 | return; | |
2015 | } | |
9bad7671 JS |
2016 | |
2017 | /** | |
f1126688 | 2018 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 2019 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
2020 | * @psb: The scsi buffer which is going to be un-mapped. |
2021 | * | |
2022 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 2023 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 2024 | **/ |
bcf4dbfa | 2025 | static void |
f1126688 | 2026 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
2027 | { |
2028 | /* | |
2029 | * There are only two special cases to consider. (1) the scsi command | |
2030 | * requested scatter-gather usage or (2) the scsi command allocated | |
2031 | * a request buffer, but did not request use_sg. There is a third | |
2032 | * case, but it does not require resource deallocation. | |
2033 | */ | |
a0b4f78f FT |
2034 | if (psb->seg_cnt > 0) |
2035 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
2036 | if (psb->prot_seg_cnt > 0) |
2037 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
2038 | scsi_prot_sg_count(psb->pCmd), | |
2039 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
2040 | } |
2041 | ||
9bad7671 | 2042 | /** |
3621a710 | 2043 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
2044 | * @vport: The virtual port for which this call is being executed. |
2045 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2046 | * @rsp_iocb: The response IOCB which contains FCP error. | |
2047 | * | |
2048 | * This routine is called to process response IOCB with status field | |
2049 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
2050 | * based upon SCSI and FCP error. | |
2051 | **/ | |
dea3101e | 2052 | static void |
2e0fef85 JS |
2053 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2054 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 2055 | { |
2056 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
2057 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
2058 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 2059 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 2060 | uint32_t resp_info = fcprsp->rspStatus2; |
2061 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 2062 | uint32_t *lp; |
dea3101e | 2063 | uint32_t host_status = DID_OK; |
2064 | uint32_t rsplen = 0; | |
c7743956 | 2065 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 2066 | |
ea2151b4 | 2067 | |
dea3101e | 2068 | /* |
2069 | * If this is a task management command, there is no | |
2070 | * scsi packet associated with this lpfc_cmd. The driver | |
2071 | * consumes it. | |
2072 | */ | |
2073 | if (fcpcmd->fcpCntl2) { | |
2074 | scsi_status = 0; | |
2075 | goto out; | |
2076 | } | |
2077 | ||
6a9c52cf JS |
2078 | if (resp_info & RSP_LEN_VALID) { |
2079 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
2080 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
2081 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
2082 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
2083 | "2719 Invalid response length: " | |
2084 | "tgt x%x lun x%x cmnd x%x rsplen x%x\n", | |
2085 | cmnd->device->id, | |
2086 | cmnd->device->lun, cmnd->cmnd[0], | |
2087 | rsplen); | |
2088 | host_status = DID_ERROR; | |
2089 | goto out; | |
2090 | } | |
2091 | } | |
2092 | ||
c7743956 JS |
2093 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
2094 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
2095 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
2096 | snslen = SCSI_SENSE_BUFFERSIZE; | |
2097 | ||
2098 | if (resp_info & RSP_LEN_VALID) | |
2099 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
2100 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
2101 | } | |
2102 | lp = (uint32_t *)cmnd->sense_buffer; | |
2103 | ||
2104 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
2105 | logit = LOG_FCP; | |
2106 | ||
e8b62011 | 2107 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 2108 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
2109 | "Data: x%x x%x x%x x%x x%x\n", |
2110 | cmnd->cmnd[0], scsi_status, | |
2111 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
2112 | be32_to_cpu(fcprsp->rspResId), | |
2113 | be32_to_cpu(fcprsp->rspSnsLen), | |
2114 | be32_to_cpu(fcprsp->rspRspLen), | |
2115 | fcprsp->rspInfo3); | |
dea3101e | 2116 | |
a0b4f78f | 2117 | scsi_set_resid(cmnd, 0); |
dea3101e | 2118 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 2119 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 2120 | |
e8b62011 | 2121 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2122 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
2123 | "residual %d Data: x%x x%x x%x\n", |
2124 | be32_to_cpu(fcpcmd->fcpDl), | |
2125 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
2126 | cmnd->underflow); | |
dea3101e | 2127 | |
7054a606 JS |
2128 | /* |
2129 | * If there is an under run check if under run reported by | |
2130 | * storage array is same as the under run reported by HBA. | |
2131 | * If this is not same, there is a dropped frame. | |
2132 | */ | |
2133 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
2134 | fcpi_parm && | |
a0b4f78f | 2135 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
2136 | lpfc_printf_vlog(vport, KERN_WARNING, |
2137 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 2138 | "9026 FCP Read Check Error " |
e8b62011 JS |
2139 | "and Underrun Data: x%x x%x x%x x%x\n", |
2140 | be32_to_cpu(fcpcmd->fcpDl), | |
2141 | scsi_get_resid(cmnd), fcpi_parm, | |
2142 | cmnd->cmnd[0]); | |
a0b4f78f | 2143 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
2144 | host_status = DID_ERROR; |
2145 | } | |
dea3101e | 2146 | /* |
2147 | * The cmnd->underflow is the minimum number of bytes that must | |
2148 | * be transfered for this command. Provided a sense condition | |
2149 | * is not present, make sure the actual amount transferred is at | |
2150 | * least the underflow value or fail. | |
2151 | */ | |
2152 | if (!(resp_info & SNS_LEN_VALID) && | |
2153 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
2154 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
2155 | < cmnd->underflow)) { | |
e8b62011 | 2156 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2157 | "9027 FCP command x%x residual " |
e8b62011 JS |
2158 | "underrun converted to error " |
2159 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 2160 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 2161 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e | 2162 | host_status = DID_ERROR; |
2163 | } | |
2164 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 2165 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2166 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 2167 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 2168 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e | 2169 | host_status = DID_ERROR; |
2170 | ||
2171 | /* | |
2172 | * Check SLI validation that all the transfer was actually done | |
2173 | * (fcpi_parm should be zero). Apply check only to reads. | |
2174 | */ | |
2175 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
2176 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 | 2177 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
e2a0a9d6 | 2178 | "9029 FCP Read Check Error Data: " |
e8b62011 JS |
2179 | "x%x x%x x%x x%x\n", |
2180 | be32_to_cpu(fcpcmd->fcpDl), | |
2181 | be32_to_cpu(fcprsp->rspResId), | |
2182 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 2183 | host_status = DID_ERROR; |
a0b4f78f | 2184 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 2185 | } |
2186 | ||
2187 | out: | |
2188 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 2189 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e | 2190 | } |
2191 | ||
9bad7671 | 2192 | /** |
3621a710 | 2193 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
2194 | * @phba: The Hba for which this call is being executed. |
2195 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 2196 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
2197 | * |
2198 | * This routine assigns scsi command result by looking into response IOCB | |
2199 | * status field appropriately. This routine handles QUEUE FULL condition as | |
2200 | * well by ramping down device queue depth. | |
2201 | **/ | |
dea3101e | 2202 | static void |
2203 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
2204 | struct lpfc_iocbq *pIocbOut) | |
2205 | { | |
2206 | struct lpfc_scsi_buf *lpfc_cmd = | |
2207 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 2208 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 2209 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
2210 | struct lpfc_nodelist *pnode = rdata->pnode; | |
2211 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 | 2212 | int result; |
a257bf90 | 2213 | struct scsi_device *tmp_sdev; |
5ffc266e | 2214 | int depth; |
fa61a54e | 2215 | unsigned long flags; |
ea2151b4 | 2216 | struct lpfc_fast_path_event *fast_path_evt; |
a257bf90 JS |
2217 | struct Scsi_Host *shost = cmd->device->host; |
2218 | uint32_t queue_depth, scsi_id; | |
dea3101e | 2219 | |
2220 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
2221 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
109f6ed0 JS |
2222 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
2223 | atomic_dec(&pnode->cmd_pending); | |
dea3101e | 2224 | |
2225 | if (lpfc_cmd->status) { | |
2226 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
2227 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
2228 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
2229 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
2230 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
2231 | ||
e8b62011 | 2232 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2233 | "9030 FCP cmd x%x failed <%d/%d> " |
e8b62011 JS |
2234 | "status: x%x result: x%x Data: x%x x%x\n", |
2235 | cmd->cmnd[0], | |
2236 | cmd->device ? cmd->device->id : 0xffff, | |
2237 | cmd->device ? cmd->device->lun : 0xffff, | |
2238 | lpfc_cmd->status, lpfc_cmd->result, | |
2239 | pIocbOut->iocb.ulpContext, | |
2240 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 2241 | |
2242 | switch (lpfc_cmd->status) { | |
2243 | case IOSTAT_FCP_RSP_ERROR: | |
2244 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 2245 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 2246 | break; |
2247 | case IOSTAT_NPORT_BSY: | |
2248 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 2249 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
2250 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
2251 | if (!fast_path_evt) | |
2252 | break; | |
2253 | fast_path_evt->un.fabric_evt.event_type = | |
2254 | FC_REG_FABRIC_EVENT; | |
2255 | fast_path_evt->un.fabric_evt.subcategory = | |
2256 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
2257 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
2258 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
2259 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
2260 | &pnode->nlp_portname, | |
2261 | sizeof(struct lpfc_name)); | |
2262 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
2263 | &pnode->nlp_nodename, | |
2264 | sizeof(struct lpfc_name)); | |
2265 | } | |
2266 | fast_path_evt->vport = vport; | |
2267 | fast_path_evt->work_evt.evt = | |
2268 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
2269 | spin_lock_irqsave(&phba->hbalock, flags); | |
2270 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
2271 | &phba->work_list); | |
2272 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2273 | lpfc_worker_wake_up(phba); | |
dea3101e | 2274 | break; |
92d7f7b0 | 2275 | case IOSTAT_LOCAL_REJECT: |
d7c255b2 | 2276 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 2277 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
d7c255b2 | 2278 | lpfc_cmd->result == IOERR_ABORT_REQUESTED) { |
92d7f7b0 | 2279 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 2280 | break; |
e2a0a9d6 JS |
2281 | } |
2282 | ||
2283 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || | |
2284 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
2285 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
2286 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
2287 | /* | |
2288 | * This is a response for a BG enabled | |
2289 | * cmd. Parse BG error | |
2290 | */ | |
2291 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
2292 | pIocbOut); | |
2293 | break; | |
2294 | } else { | |
2295 | lpfc_printf_vlog(vport, KERN_WARNING, | |
2296 | LOG_BG, | |
2297 | "9031 non-zero BGSTAT " | |
6a9c52cf | 2298 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
2299 | } |
2300 | } | |
2301 | ||
2302 | /* else: fall through */ | |
dea3101e | 2303 | default: |
2304 | cmd->result = ScsiResult(DID_ERROR, 0); | |
2305 | break; | |
2306 | } | |
2307 | ||
58da1ffb | 2308 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 2309 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
2310 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
2311 | SAM_STAT_BUSY); | |
dea3101e | 2312 | } else { |
2313 | cmd->result = ScsiResult(DID_OK, 0); | |
2314 | } | |
2315 | ||
2316 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
2317 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
2318 | ||
e8b62011 JS |
2319 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2320 | "0710 Iodone <%d/%d> cmd %p, error " | |
2321 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
2322 | cmd->device->id, cmd->device->lun, cmd, | |
2323 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
2324 | scsi_get_resid(cmd)); | |
dea3101e | 2325 | } |
2326 | ||
ea2151b4 | 2327 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 2328 | result = cmd->result; |
977b5a0a JS |
2329 | if (vport->cfg_max_scsicmpl_time && |
2330 | time_after(jiffies, lpfc_cmd->start_time + | |
2331 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 2332 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
2333 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
2334 | if (pnode->cmd_qdepth > | |
2335 | atomic_read(&pnode->cmd_pending) && | |
2336 | (atomic_read(&pnode->cmd_pending) > | |
2337 | LPFC_MIN_TGT_QDEPTH) && | |
2338 | ((cmd->cmnd[0] == READ_10) || | |
2339 | (cmd->cmnd[0] == WRITE_10))) | |
2340 | pnode->cmd_qdepth = | |
2341 | atomic_read(&pnode->cmd_pending); | |
2342 | ||
2343 | pnode->last_change_time = jiffies; | |
2344 | } | |
a257bf90 | 2345 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 JS |
2346 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
2347 | if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) && | |
977b5a0a | 2348 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 2349 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 2350 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
2351 | pnode->cmd_qdepth += pnode->cmd_qdepth * |
2352 | LPFC_TGTQ_RAMPUP_PCENT / 100; | |
2353 | if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH) | |
2354 | pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH; | |
2355 | pnode->last_change_time = jiffies; | |
a257bf90 | 2356 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 2357 | } |
977b5a0a JS |
2358 | } |
2359 | ||
1dcb58e5 | 2360 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
2361 | |
2362 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
2363 | queue_depth = cmd->device->queue_depth; | |
2364 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
2365 | cmd->scsi_done(cmd); |
2366 | ||
b808608b | 2367 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
2368 | /* |
2369 | * If there is a thread waiting for command completion | |
2370 | * wake up the thread. | |
2371 | */ | |
a257bf90 | 2372 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2373 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2374 | if (lpfc_cmd->waitq) |
2375 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2376 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
2377 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
2378 | return; | |
2379 | } | |
2380 | ||
92d7f7b0 | 2381 | if (!result) |
a257bf90 | 2382 | lpfc_rampup_queue_depth(vport, queue_depth); |
92d7f7b0 | 2383 | |
445cf4f4 JSEC |
2384 | /* |
2385 | * Check for queue full. If the lun is reporting queue full, then | |
2386 | * back off the lun queue depth to prevent target overloads. | |
2387 | */ | |
58da1ffb JS |
2388 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
2389 | NLP_CHK_NODE_ACT(pnode)) { | |
a257bf90 JS |
2390 | shost_for_each_device(tmp_sdev, shost) { |
2391 | if (tmp_sdev->id != scsi_id) | |
445cf4f4 JSEC |
2392 | continue; |
2393 | depth = scsi_track_queue_full(tmp_sdev, | |
5ffc266e JS |
2394 | tmp_sdev->queue_depth-1); |
2395 | if (depth <= 0) | |
2396 | continue; | |
e8b62011 JS |
2397 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2398 | "0711 detected queue full - lun queue " | |
2399 | "depth adjusted to %d.\n", depth); | |
ea2151b4 | 2400 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
5ffc266e JS |
2401 | pnode, |
2402 | tmp_sdev->lun, | |
2403 | depth+1, depth); | |
445cf4f4 JSEC |
2404 | } |
2405 | } | |
2406 | ||
fa61a54e JS |
2407 | /* |
2408 | * If there is a thread waiting for command completion | |
2409 | * wake up the thread. | |
2410 | */ | |
a257bf90 | 2411 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2412 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2413 | if (lpfc_cmd->waitq) |
2414 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2415 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 2416 | |
0bd4ca25 | 2417 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 2418 | } |
2419 | ||
34b02dcd | 2420 | /** |
3621a710 | 2421 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
2422 | * @data: A pointer to the immediate command data portion of the IOCB. |
2423 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
2424 | * | |
2425 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
2426 | * byte swapping the data to big endian format for transmission on the wire. | |
2427 | **/ | |
2428 | static void | |
2429 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
2430 | { | |
2431 | int i, j; | |
2432 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
2433 | i += sizeof(uint32_t), j++) { | |
2434 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
2435 | } | |
2436 | } | |
2437 | ||
9bad7671 | 2438 | /** |
f1126688 | 2439 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
2440 | * @vport: The virtual port for which this call is being executed. |
2441 | * @lpfc_cmd: The scsi command which needs to send. | |
2442 | * @pnode: Pointer to lpfc_nodelist. | |
2443 | * | |
2444 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 2445 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 2446 | **/ |
dea3101e | 2447 | static void |
f1126688 | 2448 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 2449 | struct lpfc_nodelist *pnode) |
dea3101e | 2450 | { |
2e0fef85 | 2451 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 2452 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
2453 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2454 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2455 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
2456 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 2457 | char tag[2]; |
dea3101e | 2458 | |
58da1ffb JS |
2459 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
2460 | return; | |
2461 | ||
dea3101e | 2462 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
2463 | /* clear task management bits */ |
2464 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 2465 | |
91886523 JSEC |
2466 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
2467 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 2468 | |
2469 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
2470 | ||
7e2b19fb JS |
2471 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
2472 | switch (tag[0]) { | |
dea3101e | 2473 | case HEAD_OF_QUEUE_TAG: |
2474 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
2475 | break; | |
2476 | case ORDERED_QUEUE_TAG: | |
2477 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
2478 | break; | |
2479 | default: | |
2480 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
2481 | break; | |
2482 | } | |
2483 | } else | |
2484 | fcp_cmnd->fcpCntl1 = 0; | |
2485 | ||
2486 | /* | |
2487 | * There are three possibilities here - use scatter-gather segment, use | |
2488 | * the single mapping, or neither. Start the lpfc command prep by | |
2489 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2490 | * data bde entry. | |
2491 | */ | |
a0b4f78f | 2492 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 2493 | if (datadir == DMA_TO_DEVICE) { |
2494 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
3772a991 JS |
2495 | if (phba->sli_rev < LPFC_SLI_REV4) { |
2496 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2497 | iocb_cmd->ulpPU = 0; | |
2498 | } else | |
2499 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 2500 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
2501 | phba->fc4OutputRequests++; | |
2502 | } else { | |
2503 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
2504 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 2505 | fcp_cmnd->fcpCntl3 = READ_DATA; |
2506 | phba->fc4InputRequests++; | |
2507 | } | |
2508 | } else { | |
2509 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
2510 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2511 | iocb_cmd->ulpPU = 0; | |
2512 | fcp_cmnd->fcpCntl3 = 0; | |
2513 | phba->fc4ControlRequests++; | |
2514 | } | |
e2a0a9d6 JS |
2515 | if (phba->sli_rev == 3 && |
2516 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2517 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 2518 | /* |
2519 | * Finish initializing those IOCB fields that are independent | |
2520 | * of the scsi_cmnd request_buffer | |
2521 | */ | |
2522 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
2523 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
2524 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
2525 | else |
2526 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e | 2527 | |
2528 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
2529 | piocbq->context1 = lpfc_cmd; | |
2530 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
2531 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 2532 | piocbq->vport = vport; |
dea3101e | 2533 | } |
2534 | ||
da0436e9 | 2535 | /** |
f1126688 | 2536 | * lpfc_scsi_prep_task_mgmt_cmnd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
2537 | * @vport: The virtual port for which this call is being executed. |
2538 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2539 | * @lun: Logical unit number. | |
2540 | * @task_mgmt_cmd: SCSI task management command. | |
2541 | * | |
3772a991 JS |
2542 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
2543 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
2544 | * |
2545 | * Return codes: | |
2546 | * 0 - Error | |
2547 | * 1 - Success | |
2548 | **/ | |
dea3101e | 2549 | static int |
f1126688 | 2550 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 2551 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 2552 | unsigned int lun, |
dea3101e | 2553 | uint8_t task_mgmt_cmd) |
2554 | { | |
dea3101e | 2555 | struct lpfc_iocbq *piocbq; |
2556 | IOCB_t *piocb; | |
2557 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 2558 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 2559 | struct lpfc_nodelist *ndlp = rdata->pnode; |
2560 | ||
58da1ffb JS |
2561 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
2562 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 2563 | return 0; |
dea3101e | 2564 | |
dea3101e | 2565 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
2566 | piocbq->vport = vport; |
2567 | ||
dea3101e | 2568 | piocb = &piocbq->iocb; |
2569 | ||
2570 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
2571 | /* Clear out any old data in the FCP command area */ |
2572 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
2573 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 2574 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
2575 | if (vport->phba->sli_rev == 3 && |
2576 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2577 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 2578 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 2579 | piocb->ulpContext = ndlp->nlp_rpi; |
2580 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
2581 | piocb->ulpFCP2Rcvy = 1; | |
2582 | } | |
2583 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
2584 | ||
2585 | /* ulpTimeout is only one byte */ | |
2586 | if (lpfc_cmd->timeout > 0xff) { | |
2587 | /* | |
2588 | * Do not timeout the command at the firmware level. | |
2589 | * The driver will provide the timeout mechanism. | |
2590 | */ | |
2591 | piocb->ulpTimeout = 0; | |
f1126688 | 2592 | } else |
dea3101e | 2593 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 2594 | |
f1126688 JS |
2595 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
2596 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 2597 | |
f1126688 | 2598 | return 1; |
3772a991 JS |
2599 | } |
2600 | ||
2601 | /** | |
2602 | * lpfc_scsi_api_table_setup - Set up scsi api fucntion jump table | |
2603 | * @phba: The hba struct for which this call is being executed. | |
2604 | * @dev_grp: The HBA PCI-Device group number. | |
2605 | * | |
2606 | * This routine sets up the SCSI interface API function jump table in @phba | |
2607 | * struct. | |
2608 | * Returns: 0 - success, -ENODEV - failure. | |
2609 | **/ | |
2610 | int | |
2611 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
2612 | { | |
2613 | ||
f1126688 JS |
2614 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
2615 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
2616 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; | |
2617 | ||
3772a991 JS |
2618 | switch (dev_grp) { |
2619 | case LPFC_PCI_DEV_LP: | |
2620 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
2621 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
3772a991 JS |
2622 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
2623 | break; | |
da0436e9 JS |
2624 | case LPFC_PCI_DEV_OC: |
2625 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
2626 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
da0436e9 JS |
2627 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
2628 | break; | |
3772a991 JS |
2629 | default: |
2630 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
2631 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
2632 | dev_grp); | |
2633 | return -ENODEV; | |
2634 | break; | |
2635 | } | |
2636 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf; | |
2637 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; | |
2638 | return 0; | |
2639 | } | |
2640 | ||
9bad7671 | 2641 | /** |
3621a710 | 2642 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
2643 | * @phba: The Hba for which this call is being executed. |
2644 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
2645 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
2646 | * | |
2647 | * This routine is IOCB completion routine for device reset and target reset | |
2648 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
2649 | **/ | |
7054a606 JS |
2650 | static void |
2651 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
2652 | struct lpfc_iocbq *cmdiocbq, | |
2653 | struct lpfc_iocbq *rspiocbq) | |
2654 | { | |
2655 | struct lpfc_scsi_buf *lpfc_cmd = | |
2656 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
2657 | if (lpfc_cmd) | |
2658 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
2659 | return; | |
2660 | } | |
2661 | ||
9bad7671 | 2662 | /** |
3621a710 | 2663 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
2664 | * @host: The scsi host for which this call is being executed. |
2665 | * | |
2666 | * This routine provides module information about hba. | |
2667 | * | |
2668 | * Reutrn code: | |
2669 | * Pointer to char - Success. | |
2670 | **/ | |
dea3101e | 2671 | const char * |
2672 | lpfc_info(struct Scsi_Host *host) | |
2673 | { | |
2e0fef85 JS |
2674 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
2675 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2676 | int len; |
2677 | static char lpfcinfobuf[384]; | |
2678 | ||
2679 | memset(lpfcinfobuf,0,384); | |
2680 | if (phba && phba->pcidev){ | |
2681 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
2682 | len = strlen(lpfcinfobuf); | |
2683 | snprintf(lpfcinfobuf + len, | |
2684 | 384-len, | |
2685 | " on PCI bus %02x device %02x irq %d", | |
2686 | phba->pcidev->bus->number, | |
2687 | phba->pcidev->devfn, | |
2688 | phba->pcidev->irq); | |
2689 | len = strlen(lpfcinfobuf); | |
2690 | if (phba->Port[0]) { | |
2691 | snprintf(lpfcinfobuf + len, | |
2692 | 384-len, | |
2693 | " port %s", | |
2694 | phba->Port); | |
2695 | } | |
2696 | } | |
2697 | return lpfcinfobuf; | |
2698 | } | |
2699 | ||
9bad7671 | 2700 | /** |
3621a710 | 2701 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
2702 | * @phba: The Hba for which this call is being executed. |
2703 | * | |
2704 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
2705 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
2706 | **/ | |
875fbdfe JSEC |
2707 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
2708 | { | |
2709 | unsigned long poll_tmo_expires = | |
2710 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
2711 | ||
2712 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
2713 | mod_timer(&phba->fcp_poll_timer, | |
2714 | poll_tmo_expires); | |
2715 | } | |
2716 | ||
9bad7671 | 2717 | /** |
3621a710 | 2718 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
2719 | * @phba: The Hba for which this call is being executed. |
2720 | * | |
2721 | * This routine starts the fcp_poll_timer of @phba. | |
2722 | **/ | |
875fbdfe JSEC |
2723 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
2724 | { | |
2725 | lpfc_poll_rearm_timer(phba); | |
2726 | } | |
2727 | ||
9bad7671 | 2728 | /** |
3621a710 | 2729 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
2730 | * @ptr: Map to lpfc_hba data structure pointer. |
2731 | * | |
2732 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
2733 | * and FCP Ring interrupt is disable. | |
2734 | **/ | |
2735 | ||
875fbdfe JSEC |
2736 | void lpfc_poll_timeout(unsigned long ptr) |
2737 | { | |
2e0fef85 | 2738 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
2739 | |
2740 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
2741 | lpfc_sli_handle_fast_ring_event(phba, |
2742 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
2743 | ||
875fbdfe JSEC |
2744 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
2745 | lpfc_poll_rearm_timer(phba); | |
2746 | } | |
875fbdfe JSEC |
2747 | } |
2748 | ||
9bad7671 | 2749 | /** |
3621a710 | 2750 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
2751 | * @cmnd: Pointer to scsi_cmnd data structure. |
2752 | * @done: Pointer to done routine. | |
2753 | * | |
2754 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
2755 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
2756 | * The @done callback is invoked after driver finished processing the command. | |
2757 | * | |
2758 | * Return value : | |
2759 | * 0 - Success | |
2760 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
2761 | **/ | |
dea3101e | 2762 | static int |
2763 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
2764 | { | |
2e0fef85 JS |
2765 | struct Scsi_Host *shost = cmnd->device->host; |
2766 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2767 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 2768 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
2769 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 2770 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 2771 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 2772 | int err; |
dea3101e | 2773 | |
19a7b4ae JSEC |
2774 | err = fc_remote_port_chkready(rport); |
2775 | if (err) { | |
2776 | cmnd->result = err; | |
dea3101e | 2777 | goto out_fail_command; |
2778 | } | |
2779 | ||
e2a0a9d6 JS |
2780 | if (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
2781 | scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { | |
2782 | ||
6a9c52cf JS |
2783 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2784 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
2785 | " op:%02x str=%s without registering for" | |
2786 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
2787 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
2788 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2789 | goto out_fail_command; | |
2790 | } | |
2791 | ||
dea3101e | 2792 | /* |
19a7b4ae JSEC |
2793 | * Catch race where our node has transitioned, but the |
2794 | * transport is still transitioning. | |
dea3101e | 2795 | */ |
b522d7d4 JS |
2796 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
2797 | cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); | |
2798 | goto out_fail_command; | |
2799 | } | |
109f6ed0 JS |
2800 | if (vport->cfg_max_scsicmpl_time && |
2801 | (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)) | |
977b5a0a | 2802 | goto out_host_busy; |
a93ce024 | 2803 | |
ed957684 | 2804 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 2805 | if (lpfc_cmd == NULL) { |
eaf15d5b | 2806 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 2807 | |
e8b62011 JS |
2808 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2809 | "0707 driver's buffer pool is empty, " | |
2810 | "IO busied\n"); | |
dea3101e | 2811 | goto out_host_busy; |
2812 | } | |
2813 | ||
2814 | /* | |
2815 | * Store the midlayer's command structure for the completion phase | |
2816 | * and complete the command initialization. | |
2817 | */ | |
2818 | lpfc_cmd->pCmd = cmnd; | |
2819 | lpfc_cmd->rdata = rdata; | |
2820 | lpfc_cmd->timeout = 0; | |
977b5a0a | 2821 | lpfc_cmd->start_time = jiffies; |
dea3101e | 2822 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
2823 | cmnd->scsi_done = done; | |
2824 | ||
e2a0a9d6 | 2825 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf JS |
2826 | if (vport->phba->cfg_enable_bg) { |
2827 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 JS |
2828 | "9033 BLKGRD: rcvd protected cmd:%02x op:%02x " |
2829 | "str=%s\n", | |
2830 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2831 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
6a9c52cf | 2832 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
e2a0a9d6 | 2833 | "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x " |
e4e74273 | 2834 | "%02x %02x %02x %02x %02x\n", |
e2a0a9d6 JS |
2835 | cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], |
2836 | cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], | |
2837 | cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], | |
2838 | cmnd->cmnd[9]); | |
6a9c52cf JS |
2839 | if (cmnd->cmnd[0] == READ_10) |
2840 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2841 | "9035 BLKGRD: READ @ sector %llu, " |
83096ebf TH |
2842 | "count %u\n", |
2843 | (unsigned long long)scsi_get_lba(cmnd), | |
2844 | blk_rq_sectors(cmnd->request)); | |
6a9c52cf JS |
2845 | else if (cmnd->cmnd[0] == WRITE_10) |
2846 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2847 | "9036 BLKGRD: WRITE @ sector %llu, " |
83096ebf | 2848 | "count %u cmd=%p\n", |
87b5c328 | 2849 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 2850 | blk_rq_sectors(cmnd->request), |
e2a0a9d6 | 2851 | cmnd); |
6a9c52cf | 2852 | } |
e2a0a9d6 JS |
2853 | |
2854 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2855 | } else { | |
6a9c52cf | 2856 | if (vport->phba->cfg_enable_bg) { |
e2a0a9d6 | 2857 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
6a9c52cf JS |
2858 | "9038 BLKGRD: rcvd unprotected cmd:" |
2859 | "%02x op:%02x str=%s\n", | |
2860 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
2861 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
2862 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2863 | "9039 BLKGRD: CDB: %02x %02x %02x " | |
2864 | "%02x %02x %02x %02x %02x %02x %02x\n", | |
2865 | cmnd->cmnd[0], cmnd->cmnd[1], | |
2866 | cmnd->cmnd[2], cmnd->cmnd[3], | |
2867 | cmnd->cmnd[4], cmnd->cmnd[5], | |
2868 | cmnd->cmnd[6], cmnd->cmnd[7], | |
2869 | cmnd->cmnd[8], cmnd->cmnd[9]); | |
2870 | if (cmnd->cmnd[0] == READ_10) | |
2871 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
2872 | "9040 dbg: READ @ sector %llu, " | |
2873 | "count %u\n", | |
2874 | (unsigned long long)scsi_get_lba(cmnd), | |
83096ebf | 2875 | blk_rq_sectors(cmnd->request)); |
6a9c52cf JS |
2876 | else if (cmnd->cmnd[0] == WRITE_10) |
2877 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2878 | "9041 dbg: WRITE @ sector %llu, " |
83096ebf | 2879 | "count %u cmd=%p\n", |
87b5c328 | 2880 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 2881 | blk_rq_sectors(cmnd->request), cmnd); |
6a9c52cf JS |
2882 | else |
2883 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 2884 | "9042 dbg: parser not implemented\n"); |
6a9c52cf | 2885 | } |
e2a0a9d6 JS |
2886 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
2887 | } | |
2888 | ||
dea3101e | 2889 | if (err) |
2890 | goto out_host_busy_free_buf; | |
2891 | ||
2e0fef85 | 2892 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 2893 | |
977b5a0a | 2894 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 2895 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 2896 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
2897 | if (err) { |
2898 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 2899 | goto out_host_busy_free_buf; |
eaf15d5b | 2900 | } |
875fbdfe | 2901 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
2902 | spin_unlock(shost->host_lock); |
2903 | lpfc_sli_handle_fast_ring_event(phba, | |
2904 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
2905 | ||
2906 | spin_lock(shost->host_lock); | |
875fbdfe JSEC |
2907 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
2908 | lpfc_poll_rearm_timer(phba); | |
2909 | } | |
2910 | ||
dea3101e | 2911 | return 0; |
2912 | ||
2913 | out_host_busy_free_buf: | |
bcf4dbfa | 2914 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 2915 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 2916 | out_host_busy: |
2917 | return SCSI_MLQUEUE_HOST_BUSY; | |
2918 | ||
2919 | out_fail_command: | |
2920 | done(cmnd); | |
2921 | return 0; | |
2922 | } | |
2923 | ||
9bad7671 | 2924 | /** |
3621a710 | 2925 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
2926 | * @cmnd: Pointer to scsi_cmnd data structure. |
2927 | * | |
2928 | * This routine aborts @cmnd pending in base driver. | |
2929 | * | |
2930 | * Return code : | |
2931 | * 0x2003 - Error | |
2932 | * 0x2002 - Success | |
2933 | **/ | |
dea3101e | 2934 | static int |
63c59c3b | 2935 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 2936 | { |
2e0fef85 JS |
2937 | struct Scsi_Host *shost = cmnd->device->host; |
2938 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
2939 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
2940 | struct lpfc_iocbq *iocb; |
2941 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 2942 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 2943 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 2944 | int ret = SUCCESS; |
fa61a54e | 2945 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 2946 | |
65d430fa | 2947 | fc_block_scsi_eh(cmnd); |
0bd4ca25 JSEC |
2948 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
2949 | BUG_ON(!lpfc_cmd); | |
dea3101e | 2950 | |
0bd4ca25 JSEC |
2951 | /* |
2952 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
2953 | * points to a different SCSI command, then the driver has | |
2954 | * already completed this command, but the midlayer did not | |
2955 | * see the completion before the eh fired. Just return | |
2956 | * SUCCESS. | |
2957 | */ | |
2958 | iocb = &lpfc_cmd->cur_iocbq; | |
2959 | if (lpfc_cmd->pCmd != cmnd) | |
2960 | goto out; | |
dea3101e | 2961 | |
0bd4ca25 | 2962 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 2963 | |
0bd4ca25 JSEC |
2964 | abtsiocb = lpfc_sli_get_iocbq(phba); |
2965 | if (abtsiocb == NULL) { | |
2966 | ret = FAILED; | |
dea3101e | 2967 | goto out; |
2968 | } | |
2969 | ||
dea3101e | 2970 | /* |
0bd4ca25 JSEC |
2971 | * The scsi command can not be in txq and it is in flight because the |
2972 | * pCmd is still pointig at the SCSI command we have to abort. There | |
2973 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 2974 | */ |
dea3101e | 2975 | |
0bd4ca25 JSEC |
2976 | cmd = &iocb->iocb; |
2977 | icmd = &abtsiocb->iocb; | |
2978 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
2979 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
2980 | if (phba->sli_rev == LPFC_SLI_REV4) |
2981 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
2982 | else | |
2983 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 2984 | |
0bd4ca25 JSEC |
2985 | icmd->ulpLe = 1; |
2986 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
2987 | |
2988 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
2989 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
2990 | ||
2e0fef85 | 2991 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
2992 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
2993 | else | |
2994 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 2995 | |
0bd4ca25 | 2996 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 2997 | abtsiocb->vport = vport; |
3772a991 JS |
2998 | if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) == |
2999 | IOCB_ERROR) { | |
0bd4ca25 JSEC |
3000 | lpfc_sli_release_iocbq(phba, abtsiocb); |
3001 | ret = FAILED; | |
3002 | goto out; | |
3003 | } | |
dea3101e | 3004 | |
875fbdfe | 3005 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
3006 | lpfc_sli_handle_fast_ring_event(phba, |
3007 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 3008 | |
fa61a54e | 3009 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 3010 | /* Wait for abort to complete */ |
fa61a54e JS |
3011 | wait_event_timeout(waitq, |
3012 | (lpfc_cmd->pCmd != cmnd), | |
3013 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 3014 | |
fa61a54e JS |
3015 | spin_lock_irq(shost->host_lock); |
3016 | lpfc_cmd->waitq = NULL; | |
3017 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 3018 | |
0bd4ca25 JSEC |
3019 | if (lpfc_cmd->pCmd == cmnd) { |
3020 | ret = FAILED; | |
e8b62011 JS |
3021 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3022 | "0748 abort handler timed out waiting " | |
3023 | "for abort to complete: ret %#x, ID %d, " | |
3024 | "LUN %d, snum %#lx\n", | |
3025 | ret, cmnd->device->id, cmnd->device->lun, | |
3026 | cmnd->serial_number); | |
dea3101e | 3027 | } |
3028 | ||
3029 | out: | |
e8b62011 JS |
3030 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3031 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
3032 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
3033 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 3034 | return ret; |
8fa728a2 JG |
3035 | } |
3036 | ||
bbb9d180 JS |
3037 | static char * |
3038 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
3039 | { | |
3040 | switch (task_mgmt_cmd) { | |
3041 | case FCP_ABORT_TASK_SET: | |
3042 | return "ABORT_TASK_SET"; | |
3043 | case FCP_CLEAR_TASK_SET: | |
3044 | return "FCP_CLEAR_TASK_SET"; | |
3045 | case FCP_BUS_RESET: | |
3046 | return "FCP_BUS_RESET"; | |
3047 | case FCP_LUN_RESET: | |
3048 | return "FCP_LUN_RESET"; | |
3049 | case FCP_TARGET_RESET: | |
3050 | return "FCP_TARGET_RESET"; | |
3051 | case FCP_CLEAR_ACA: | |
3052 | return "FCP_CLEAR_ACA"; | |
3053 | case FCP_TERMINATE_TASK: | |
3054 | return "FCP_TERMINATE_TASK"; | |
3055 | default: | |
3056 | return "unknown"; | |
3057 | } | |
3058 | } | |
3059 | ||
9bad7671 | 3060 | /** |
bbb9d180 JS |
3061 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
3062 | * @vport: The virtual port for which this call is being executed. | |
3063 | * @rdata: Pointer to remote port local data | |
3064 | * @tgt_id: Target ID of remote device. | |
3065 | * @lun_id: Lun number for the TMF | |
3066 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 3067 | * |
bbb9d180 JS |
3068 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
3069 | * a remote port. | |
9bad7671 | 3070 | * |
bbb9d180 JS |
3071 | * Return Code: |
3072 | * 0x2003 - Error | |
3073 | * 0x2002 - Success. | |
9bad7671 | 3074 | **/ |
dea3101e | 3075 | static int |
bbb9d180 JS |
3076 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
3077 | unsigned tgt_id, unsigned int lun_id, | |
3078 | uint8_t task_mgmt_cmd) | |
dea3101e | 3079 | { |
2e0fef85 | 3080 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 3081 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
3082 | struct lpfc_iocbq *iocbq; |
3083 | struct lpfc_iocbq *iocbqrsp; | |
3084 | int ret; | |
915caaaf | 3085 | int status; |
dea3101e | 3086 | |
bbb9d180 | 3087 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
915caaaf | 3088 | return FAILED; |
bbb9d180 | 3089 | |
2e0fef85 | 3090 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 3091 | if (lpfc_cmd == NULL) |
915caaaf | 3092 | return FAILED; |
dea3101e | 3093 | lpfc_cmd->timeout = 60; |
0b18ac42 | 3094 | lpfc_cmd->rdata = rdata; |
dea3101e | 3095 | |
bbb9d180 JS |
3096 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
3097 | task_mgmt_cmd); | |
915caaaf JS |
3098 | if (!status) { |
3099 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3100 | return FAILED; | |
3101 | } | |
dea3101e | 3102 | |
bbb9d180 | 3103 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 3104 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
3105 | if (iocbqrsp == NULL) { |
3106 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3107 | return FAILED; | |
3108 | } | |
bbb9d180 | 3109 | |
e8b62011 | 3110 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
bbb9d180 JS |
3111 | "0702 Issue %s to TGT %d LUN %d " |
3112 | "rpi x%x nlp_flag x%x\n", | |
3113 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, | |
3114 | rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
3115 | ||
3772a991 | 3116 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 3117 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
bbb9d180 JS |
3118 | if (status != IOCB_SUCCESS) { |
3119 | if (status == IOCB_TIMEDOUT) { | |
3120 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
3121 | ret = TIMEOUT_ERROR; | |
3122 | } else | |
915caaaf | 3123 | ret = FAILED; |
bbb9d180 JS |
3124 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
3125 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3126 | "0727 TMF %s to TGT %d LUN %d failed (%d, %d)\n", | |
3127 | lpfc_taskmgmt_name(task_mgmt_cmd), | |
3128 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
915caaaf | 3129 | iocbqrsp->iocb.un.ulpWord[4]); |
bbb9d180 JS |
3130 | } else |
3131 | ret = SUCCESS; | |
3132 | ||
6175c02a | 3133 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
3134 | |
3135 | if (ret != TIMEOUT_ERROR) | |
3136 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3137 | ||
3138 | return ret; | |
3139 | } | |
3140 | ||
3141 | /** | |
3142 | * lpfc_chk_tgt_mapped - | |
3143 | * @vport: The virtual port to check on | |
3144 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3145 | * | |
3146 | * This routine delays until the scsi target (aka rport) for the | |
3147 | * command exists (is present and logged in) or we declare it non-existent. | |
3148 | * | |
3149 | * Return code : | |
3150 | * 0x2003 - Error | |
3151 | * 0x2002 - Success | |
3152 | **/ | |
3153 | static int | |
3154 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
3155 | { | |
3156 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
3157 | struct lpfc_nodelist *pnode = rdata->pnode; | |
3158 | unsigned long later; | |
3159 | ||
3160 | /* | |
3161 | * If target is not in a MAPPED state, delay until | |
3162 | * target is rediscovered or devloss timeout expires. | |
3163 | */ | |
3164 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
3165 | while (time_after(later, jiffies)) { | |
3166 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
3167 | return FAILED; | |
3168 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
3169 | return SUCCESS; | |
3170 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
3171 | rdata = cmnd->device->hostdata; | |
3172 | if (!rdata) | |
3173 | return FAILED; | |
3174 | pnode = rdata->pnode; | |
3175 | } | |
3176 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
3177 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
3178 | return FAILED; | |
3179 | return SUCCESS; | |
3180 | } | |
3181 | ||
3182 | /** | |
3183 | * lpfc_reset_flush_io_context - | |
3184 | * @vport: The virtual port (scsi_host) for the flush context | |
3185 | * @tgt_id: If aborting by Target contect - specifies the target id | |
3186 | * @lun_id: If aborting by Lun context - specifies the lun id | |
3187 | * @context: specifies the context level to flush at. | |
3188 | * | |
3189 | * After a reset condition via TMF, we need to flush orphaned i/o | |
3190 | * contexts from the adapter. This routine aborts any contexts | |
3191 | * outstanding, then waits for their completions. The wait is | |
3192 | * bounded by devloss_tmo though. | |
3193 | * | |
3194 | * Return code : | |
3195 | * 0x2003 - Error | |
3196 | * 0x2002 - Success | |
3197 | **/ | |
3198 | static int | |
3199 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
3200 | uint64_t lun_id, lpfc_ctx_cmd context) | |
3201 | { | |
3202 | struct lpfc_hba *phba = vport->phba; | |
3203 | unsigned long later; | |
3204 | int cnt; | |
3205 | ||
3206 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 3207 | if (cnt) |
51ef4c26 | 3208 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
bbb9d180 | 3209 | tgt_id, lun_id, context); |
915caaaf JS |
3210 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
3211 | while (time_after(later, jiffies) && cnt) { | |
3212 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 3213 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 3214 | } |
dea3101e | 3215 | if (cnt) { |
e8b62011 | 3216 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
3217 | "0724 I/O flush failure for context %s : cnt x%x\n", |
3218 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
3219 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
3220 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
3221 | cnt); | |
3222 | return FAILED; | |
dea3101e | 3223 | } |
bbb9d180 JS |
3224 | return SUCCESS; |
3225 | } | |
3226 | ||
3227 | /** | |
3228 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
3229 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3230 | * | |
3231 | * This routine does a device reset by sending a LUN_RESET task management | |
3232 | * command. | |
3233 | * | |
3234 | * Return code : | |
3235 | * 0x2003 - Error | |
3236 | * 0x2002 - Success | |
3237 | **/ | |
3238 | static int | |
3239 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
3240 | { | |
3241 | struct Scsi_Host *shost = cmnd->device->host; | |
3242 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3243 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
3244 | struct lpfc_nodelist *pnode = rdata->pnode; | |
3245 | unsigned tgt_id = cmnd->device->id; | |
3246 | unsigned int lun_id = cmnd->device->lun; | |
3247 | struct lpfc_scsi_event_header scsi_event; | |
3248 | int status; | |
3249 | ||
65d430fa | 3250 | fc_block_scsi_eh(cmnd); |
bbb9d180 JS |
3251 | |
3252 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3253 | if (status == FAILED) { | |
3254 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3255 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
3256 | return FAILED; | |
3257 | } | |
3258 | ||
3259 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3260 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
3261 | scsi_event.lun = lun_id; | |
3262 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3263 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3264 | ||
3265 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3266 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3267 | ||
3268 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3269 | FCP_LUN_RESET); | |
3270 | ||
3271 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3272 | "0713 SCSI layer issued Device Reset (%d, %d) " | |
3273 | "return x%x\n", tgt_id, lun_id, status); | |
3274 | ||
3275 | /* | |
3276 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3277 | * or if the TMF failed, they may be in an indeterminate state. | |
3278 | * So, continue on. | |
3279 | * We will report success if all the i/o aborts successfully. | |
3280 | */ | |
3281 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3282 | LPFC_CTX_LUN); | |
3283 | return status; | |
3284 | } | |
3285 | ||
3286 | /** | |
3287 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
3288 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3289 | * | |
3290 | * This routine does a target reset by sending a TARGET_RESET task management | |
3291 | * command. | |
3292 | * | |
3293 | * Return code : | |
3294 | * 0x2003 - Error | |
3295 | * 0x2002 - Success | |
3296 | **/ | |
3297 | static int | |
3298 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
3299 | { | |
3300 | struct Scsi_Host *shost = cmnd->device->host; | |
3301 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3302 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
3303 | struct lpfc_nodelist *pnode = rdata->pnode; | |
3304 | unsigned tgt_id = cmnd->device->id; | |
3305 | unsigned int lun_id = cmnd->device->lun; | |
3306 | struct lpfc_scsi_event_header scsi_event; | |
3307 | int status; | |
3308 | ||
65d430fa | 3309 | fc_block_scsi_eh(cmnd); |
bbb9d180 JS |
3310 | |
3311 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3312 | if (status == FAILED) { | |
3313 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3314 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
3315 | return FAILED; | |
3316 | } | |
3317 | ||
3318 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3319 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
3320 | scsi_event.lun = 0; | |
3321 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3322 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3323 | ||
3324 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3325 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3326 | ||
3327 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3328 | FCP_TARGET_RESET); | |
3329 | ||
3330 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3331 | "0723 SCSI layer issued Target Reset (%d, %d) " | |
3332 | "return x%x\n", tgt_id, lun_id, status); | |
3333 | ||
3334 | /* | |
3335 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3336 | * or if the TMF failed, they may be in an indeterminate state. | |
3337 | * So, continue on. | |
3338 | * We will report success if all the i/o aborts successfully. | |
3339 | */ | |
3340 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3341 | LPFC_CTX_TGT); | |
3342 | return status; | |
dea3101e | 3343 | } |
3344 | ||
9bad7671 | 3345 | /** |
3621a710 | 3346 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
3347 | * @cmnd: Pointer to scsi_cmnd data structure. |
3348 | * | |
bbb9d180 JS |
3349 | * This routine does target reset to all targets on @cmnd->device->host. |
3350 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 3351 | * |
bbb9d180 JS |
3352 | * Return code : |
3353 | * 0x2003 - Error | |
3354 | * 0x2002 - Success | |
9bad7671 | 3355 | **/ |
94d0e7b8 | 3356 | static int |
7054a606 | 3357 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 3358 | { |
2e0fef85 JS |
3359 | struct Scsi_Host *shost = cmnd->device->host; |
3360 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 3361 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 3362 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
3363 | int match; |
3364 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
3365 | |
3366 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3367 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
3368 | scsi_event.lun = 0; | |
3369 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
3370 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
3371 | ||
bbb9d180 JS |
3372 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
3373 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 3374 | |
65d430fa | 3375 | fc_block_scsi_eh(cmnd); |
bbb9d180 | 3376 | |
dea3101e | 3377 | /* |
3378 | * Since the driver manages a single bus device, reset all | |
3379 | * targets known to the driver. Should any target reset | |
3380 | * fail, this routine returns failure to the midlayer. | |
3381 | */ | |
e17da18e | 3382 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 3383 | /* Search for mapped node by target ID */ |
dea3101e | 3384 | match = 0; |
2e0fef85 JS |
3385 | spin_lock_irq(shost->host_lock); |
3386 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
3387 | if (!NLP_CHK_NODE_ACT(ndlp)) |
3388 | continue; | |
685f0bf7 | 3389 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 3390 | ndlp->nlp_sid == i && |
685f0bf7 | 3391 | ndlp->rport) { |
dea3101e | 3392 | match = 1; |
3393 | break; | |
3394 | } | |
3395 | } | |
2e0fef85 | 3396 | spin_unlock_irq(shost->host_lock); |
dea3101e | 3397 | if (!match) |
3398 | continue; | |
bbb9d180 JS |
3399 | |
3400 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
3401 | i, 0, FCP_TARGET_RESET); | |
3402 | ||
3403 | if (status != SUCCESS) { | |
e8b62011 JS |
3404 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3405 | "0700 Bus Reset on target %d failed\n", | |
3406 | i); | |
915caaaf | 3407 | ret = FAILED; |
dea3101e | 3408 | } |
3409 | } | |
6175c02a | 3410 | /* |
bbb9d180 JS |
3411 | * We have to clean up i/o as : they may be orphaned by the TMFs |
3412 | * above; or if any of the TMFs failed, they may be in an | |
3413 | * indeterminate state. | |
3414 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 3415 | */ |
bbb9d180 JS |
3416 | |
3417 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
3418 | if (status != SUCCESS) | |
0bd4ca25 | 3419 | ret = FAILED; |
bbb9d180 | 3420 | |
e8b62011 JS |
3421 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3422 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 3423 | return ret; |
3424 | } | |
3425 | ||
9bad7671 | 3426 | /** |
3621a710 | 3427 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
3428 | * @sdev: Pointer to scsi_device. |
3429 | * | |
3430 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
3431 | * globally available list of scsi buffers. This routine also makes sure scsi | |
3432 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
3433 | * of scsi buffer exists for the lifetime of the driver. | |
3434 | * | |
3435 | * Return codes: | |
3436 | * non-0 - Error | |
3437 | * 0 - Success | |
3438 | **/ | |
dea3101e | 3439 | static int |
3440 | lpfc_slave_alloc(struct scsi_device *sdev) | |
3441 | { | |
2e0fef85 JS |
3442 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3443 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 3444 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 3445 | uint32_t total = 0; |
dea3101e | 3446 | uint32_t num_to_alloc = 0; |
3772a991 | 3447 | int num_allocated = 0; |
dea3101e | 3448 | |
19a7b4ae | 3449 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 3450 | return -ENXIO; |
3451 | ||
19a7b4ae | 3452 | sdev->hostdata = rport->dd_data; |
dea3101e | 3453 | |
3454 | /* | |
3455 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
3456 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
3457 | * HBA limit conveyed to the midlayer via the host structure. The |
3458 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
3459 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 3460 | */ |
3461 | total = phba->total_scsi_bufs; | |
3de2a653 | 3462 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
3463 | |
3464 | /* Allow some exchanges to be available always to complete discovery */ | |
3465 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3466 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3467 | "0704 At limitation of %d preallocated " | |
3468 | "command buffers\n", total); | |
dea3101e | 3469 | return 0; |
92d7f7b0 JS |
3470 | /* Allow some exchanges to be available always to complete discovery */ |
3471 | } else if (total + num_to_alloc > | |
3472 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3473 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3474 | "0705 Allocation request of %d " | |
3475 | "command buffers will exceed max of %d. " | |
3476 | "Reducing allocation request to %d.\n", | |
3477 | num_to_alloc, phba->cfg_hba_queue_depth, | |
3478 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 3479 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
3480 | } | |
3772a991 JS |
3481 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
3482 | if (num_to_alloc != num_allocated) { | |
3483 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
3484 | "0708 Allocation request of %d " | |
3485 | "command buffers did not succeed. " | |
3486 | "Allocated %d buffers.\n", | |
3487 | num_to_alloc, num_allocated); | |
dea3101e | 3488 | } |
3489 | return 0; | |
3490 | } | |
3491 | ||
9bad7671 | 3492 | /** |
3621a710 | 3493 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
3494 | * @sdev: Pointer to scsi_device. |
3495 | * | |
3496 | * This routine configures following items | |
3497 | * - Tag command queuing support for @sdev if supported. | |
3498 | * - Dev loss time out value of fc_rport. | |
3499 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. | |
3500 | * | |
3501 | * Return codes: | |
3502 | * 0 - Success | |
3503 | **/ | |
dea3101e | 3504 | static int |
3505 | lpfc_slave_configure(struct scsi_device *sdev) | |
3506 | { | |
2e0fef85 JS |
3507 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3508 | struct lpfc_hba *phba = vport->phba; | |
3509 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e | 3510 | |
3511 | if (sdev->tagged_supported) | |
3de2a653 | 3512 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 3513 | else |
3de2a653 | 3514 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 3515 | |
3516 | /* | |
3517 | * Initialize the fc transport attributes for the target | |
3518 | * containing this scsi device. Also note that the driver's | |
3519 | * target pointer is stored in the starget_data for the | |
3520 | * driver's sysfs entry point functions. | |
3521 | */ | |
3de2a653 | 3522 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 3523 | |
875fbdfe | 3524 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
3525 | lpfc_sli_handle_fast_ring_event(phba, |
3526 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
3527 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
3528 | lpfc_poll_rearm_timer(phba); | |
3529 | } | |
3530 | ||
dea3101e | 3531 | return 0; |
3532 | } | |
3533 | ||
9bad7671 | 3534 | /** |
3621a710 | 3535 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
3536 | * @sdev: Pointer to scsi_device. |
3537 | * | |
3538 | * This routine sets @sdev hostatdata filed to null. | |
3539 | **/ | |
dea3101e | 3540 | static void |
3541 | lpfc_slave_destroy(struct scsi_device *sdev) | |
3542 | { | |
3543 | sdev->hostdata = NULL; | |
3544 | return; | |
3545 | } | |
3546 | ||
92d7f7b0 | 3547 | |
dea3101e | 3548 | struct scsi_host_template lpfc_template = { |
3549 | .module = THIS_MODULE, | |
3550 | .name = LPFC_DRIVER_NAME, | |
3551 | .info = lpfc_info, | |
3552 | .queuecommand = lpfc_queuecommand, | |
3553 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
3554 | .eh_device_reset_handler = lpfc_device_reset_handler, |
3555 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 3556 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
dea3101e | 3557 | .slave_alloc = lpfc_slave_alloc, |
3558 | .slave_configure = lpfc_slave_configure, | |
3559 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 3560 | .scan_finished = lpfc_scan_finished, |
dea3101e | 3561 | .this_id = -1, |
83108bd3 | 3562 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e | 3563 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
3564 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 3565 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 3566 | .max_sectors = 0xFFFF, |
f1c3b0fc | 3567 | .vendor_id = LPFC_NL_VENDOR_ID, |
5ffc266e | 3568 | .change_queue_depth = lpfc_change_queue_depth, |
dea3101e | 3569 | }; |
3de2a653 JS |
3570 | |
3571 | struct scsi_host_template lpfc_vport_template = { | |
3572 | .module = THIS_MODULE, | |
3573 | .name = LPFC_DRIVER_NAME, | |
3574 | .info = lpfc_info, | |
3575 | .queuecommand = lpfc_queuecommand, | |
3576 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
3577 | .eh_device_reset_handler = lpfc_device_reset_handler, |
3578 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
3579 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
3580 | .slave_alloc = lpfc_slave_alloc, | |
3581 | .slave_configure = lpfc_slave_configure, | |
3582 | .slave_destroy = lpfc_slave_destroy, | |
3583 | .scan_finished = lpfc_scan_finished, | |
3584 | .this_id = -1, | |
83108bd3 | 3585 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
3586 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
3587 | .use_clustering = ENABLE_CLUSTERING, | |
3588 | .shost_attrs = lpfc_vport_attrs, | |
3589 | .max_sectors = 0xFFFF, | |
5ffc266e | 3590 | .change_queue_depth = lpfc_change_queue_depth, |
3de2a653 | 3591 | }; |