]>
Commit | Line | Data |
---|---|---|
dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
792581de | 4 | * Copyright (C) 2004-2011 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e JB |
8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
dea3101e | 21 | #include <linux/pci.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
dea3101e | 23 | #include <linux/interrupt.h> |
09703660 | 24 | #include <linux/export.h> |
a90f5684 | 25 | #include <linux/delay.h> |
e2a0a9d6 | 26 | #include <asm/unaligned.h> |
dea3101e JB |
27 | |
28 | #include <scsi/scsi.h> | |
29 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 30 | #include <scsi/scsi_eh.h> |
dea3101e JB |
31 | #include <scsi/scsi_host.h> |
32 | #include <scsi/scsi_tcq.h> | |
33 | #include <scsi/scsi_transport_fc.h> | |
34 | ||
35 | #include "lpfc_version.h" | |
da0436e9 | 36 | #include "lpfc_hw4.h" |
dea3101e JB |
37 | #include "lpfc_hw.h" |
38 | #include "lpfc_sli.h" | |
da0436e9 | 39 | #include "lpfc_sli4.h" |
ea2151b4 | 40 | #include "lpfc_nl.h" |
dea3101e JB |
41 | #include "lpfc_disc.h" |
42 | #include "lpfc_scsi.h" | |
43 | #include "lpfc.h" | |
44 | #include "lpfc_logmsg.h" | |
45 | #include "lpfc_crtn.h" | |
92d7f7b0 | 46 | #include "lpfc_vport.h" |
dea3101e JB |
47 | |
48 | #define LPFC_RESET_WAIT 2 | |
49 | #define LPFC_ABORT_WAIT 2 | |
50 | ||
e2a0a9d6 JS |
51 | int _dump_buf_done; |
52 | ||
53 | static char *dif_op_str[] = { | |
54 | "SCSI_PROT_NORMAL", | |
55 | "SCSI_PROT_READ_INSERT", | |
56 | "SCSI_PROT_WRITE_STRIP", | |
57 | "SCSI_PROT_READ_STRIP", | |
58 | "SCSI_PROT_WRITE_INSERT", | |
59 | "SCSI_PROT_READ_PASS", | |
60 | "SCSI_PROT_WRITE_PASS", | |
e2a0a9d6 | 61 | }; |
f9bb2da1 JS |
62 | |
63 | struct scsi_dif_tuple { | |
64 | __be16 guard_tag; /* Checksum */ | |
65 | __be16 app_tag; /* Opaque storage */ | |
66 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
67 | }; | |
68 | ||
da0436e9 JS |
69 | static void |
70 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
1c6f4ef5 JS |
71 | static void |
72 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
e2a0a9d6 JS |
73 | |
74 | static void | |
6a9c52cf | 75 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
76 | { |
77 | void *src, *dst; | |
78 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
79 | ||
80 | if (!_dump_buf_data) { | |
6a9c52cf JS |
81 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
82 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
83 | __func__); |
84 | return; | |
85 | } | |
86 | ||
87 | ||
88 | if (!sgde) { | |
6a9c52cf JS |
89 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
90 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
91 | return; |
92 | } | |
93 | ||
94 | dst = (void *) _dump_buf_data; | |
95 | while (sgde) { | |
96 | src = sg_virt(sgde); | |
97 | memcpy(dst, src, sgde->length); | |
98 | dst += sgde->length; | |
99 | sgde = sg_next(sgde); | |
100 | } | |
101 | } | |
102 | ||
103 | static void | |
6a9c52cf | 104 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
105 | { |
106 | void *src, *dst; | |
107 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
108 | ||
109 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
110 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
111 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
112 | __func__); |
113 | return; | |
114 | } | |
115 | ||
116 | if (!sgde) { | |
6a9c52cf JS |
117 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
118 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
119 | return; |
120 | } | |
121 | ||
122 | dst = _dump_buf_dif; | |
123 | while (sgde) { | |
124 | src = sg_virt(sgde); | |
125 | memcpy(dst, src, sgde->length); | |
126 | dst += sgde->length; | |
127 | sgde = sg_next(sgde); | |
128 | } | |
129 | } | |
130 | ||
f1126688 JS |
131 | /** |
132 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
133 | * @phba: Pointer to HBA object. | |
134 | * @lpfc_cmd: lpfc scsi command object pointer. | |
135 | * | |
136 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
137 | * set the last bit in the response sge entry. | |
138 | **/ | |
139 | static void | |
140 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
141 | struct lpfc_scsi_buf *lpfc_cmd) | |
142 | { | |
143 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
144 | if (sgl) { | |
145 | sgl += 1; | |
146 | sgl->word2 = le32_to_cpu(sgl->word2); | |
147 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
148 | sgl->word2 = cpu_to_le32(sgl->word2); | |
149 | } | |
150 | } | |
151 | ||
ea2151b4 | 152 | /** |
3621a710 | 153 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
154 | * @phba: Pointer to HBA object. |
155 | * @lpfc_cmd: lpfc scsi command object pointer. | |
156 | * | |
157 | * This function is called when there is a command completion and this | |
158 | * function updates the statistical data for the command completion. | |
159 | **/ | |
160 | static void | |
161 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
162 | { | |
163 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
164 | struct lpfc_nodelist *pnode = rdata->pnode; | |
165 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
166 | unsigned long flags; | |
167 | struct Scsi_Host *shost = cmd->device->host; | |
168 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
169 | unsigned long latency; | |
170 | int i; | |
171 | ||
172 | if (cmd->result) | |
173 | return; | |
174 | ||
9f1e1b50 JS |
175 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
176 | ||
ea2151b4 JS |
177 | spin_lock_irqsave(shost->host_lock, flags); |
178 | if (!vport->stat_data_enabled || | |
179 | vport->stat_data_blocked || | |
5989b8d4 | 180 | !pnode || |
ea2151b4 JS |
181 | !pnode->lat_data || |
182 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
183 | spin_unlock_irqrestore(shost->host_lock, flags); | |
184 | return; | |
185 | } | |
ea2151b4 JS |
186 | |
187 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
188 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
189 | phba->bucket_step; | |
9f1e1b50 JS |
190 | /* check array subscript bounds */ |
191 | if (i < 0) | |
192 | i = 0; | |
193 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
194 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
195 | } else { |
196 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
197 | if (latency <= (phba->bucket_base + | |
198 | ((1<<i)*phba->bucket_step))) | |
199 | break; | |
200 | } | |
201 | ||
202 | pnode->lat_data[i].cmd_count++; | |
203 | spin_unlock_irqrestore(shost->host_lock, flags); | |
204 | } | |
205 | ||
ea2151b4 | 206 | /** |
3621a710 | 207 | * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event |
ea2151b4 JS |
208 | * @phba: Pointer to HBA context object. |
209 | * @vport: Pointer to vport object. | |
210 | * @ndlp: Pointer to FC node associated with the target. | |
211 | * @lun: Lun number of the scsi device. | |
212 | * @old_val: Old value of the queue depth. | |
213 | * @new_val: New value of the queue depth. | |
214 | * | |
215 | * This function sends an event to the mgmt application indicating | |
216 | * there is a change in the scsi device queue depth. | |
217 | **/ | |
218 | static void | |
219 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
220 | struct lpfc_vport *vport, | |
221 | struct lpfc_nodelist *ndlp, | |
222 | uint32_t lun, | |
223 | uint32_t old_val, | |
224 | uint32_t new_val) | |
225 | { | |
226 | struct lpfc_fast_path_event *fast_path_evt; | |
227 | unsigned long flags; | |
228 | ||
229 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
230 | if (!fast_path_evt) | |
231 | return; | |
232 | ||
233 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
234 | FC_REG_SCSI_EVENT; | |
235 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
236 | LPFC_EVENT_VARQUEDEPTH; | |
237 | ||
238 | /* Report all luns with change in queue depth */ | |
239 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
240 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
241 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
242 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
243 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
244 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
245 | } | |
246 | ||
247 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
248 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
249 | fast_path_evt->vport = vport; | |
250 | ||
251 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
252 | spin_lock_irqsave(&phba->hbalock, flags); | |
253 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
254 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
255 | lpfc_worker_wake_up(phba); | |
256 | ||
257 | return; | |
258 | } | |
259 | ||
5ffc266e JS |
260 | /** |
261 | * lpfc_change_queue_depth - Alter scsi device queue depth | |
262 | * @sdev: Pointer the scsi device on which to change the queue depth. | |
263 | * @qdepth: New queue depth to set the sdev to. | |
264 | * @reason: The reason for the queue depth change. | |
265 | * | |
266 | * This function is called by the midlayer and the LLD to alter the queue | |
267 | * depth for a scsi device. This function sets the queue depth to the new | |
268 | * value and sends an event out to log the queue depth change. | |
269 | **/ | |
270 | int | |
271 | lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) | |
272 | { | |
273 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; | |
274 | struct lpfc_hba *phba = vport->phba; | |
275 | struct lpfc_rport_data *rdata; | |
276 | unsigned long new_queue_depth, old_queue_depth; | |
277 | ||
278 | old_queue_depth = sdev->queue_depth; | |
279 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth); | |
280 | new_queue_depth = sdev->queue_depth; | |
281 | rdata = sdev->hostdata; | |
282 | if (rdata) | |
283 | lpfc_send_sdev_queuedepth_change_event(phba, vport, | |
284 | rdata->pnode, sdev->lun, | |
285 | old_queue_depth, | |
286 | new_queue_depth); | |
287 | return sdev->queue_depth; | |
288 | } | |
289 | ||
9bad7671 | 290 | /** |
3621a710 | 291 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
292 | * @phba: The Hba for which this call is being executed. |
293 | * | |
294 | * This routine is called when there is resource error in driver or firmware. | |
295 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
296 | * posts at most 1 event each second. This routine wakes up worker thread of | |
297 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
298 | * | |
299 | * This routine should be called with no lock held. | |
300 | **/ | |
92d7f7b0 | 301 | void |
eaf15d5b | 302 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
303 | { |
304 | unsigned long flags; | |
5e9d9b82 | 305 | uint32_t evt_posted; |
92d7f7b0 JS |
306 | |
307 | spin_lock_irqsave(&phba->hbalock, flags); | |
308 | atomic_inc(&phba->num_rsrc_err); | |
309 | phba->last_rsrc_error_time = jiffies; | |
310 | ||
311 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
312 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
313 | return; | |
314 | } | |
315 | ||
316 | phba->last_ramp_down_time = jiffies; | |
317 | ||
318 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
319 | ||
320 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
321 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
322 | if (!evt_posted) | |
92d7f7b0 | 323 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
324 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
325 | ||
5e9d9b82 JS |
326 | if (!evt_posted) |
327 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
328 | return; |
329 | } | |
330 | ||
9bad7671 | 331 | /** |
3621a710 | 332 | * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread |
9bad7671 JS |
333 | * @phba: The Hba for which this call is being executed. |
334 | * | |
335 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
336 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
337 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
338 | * to process WORKER_RAM_DOWN_EVENT event. | |
339 | * | |
340 | * This routine should be called with no lock held. | |
341 | **/ | |
92d7f7b0 | 342 | static inline void |
3de2a653 | 343 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
a257bf90 | 344 | uint32_t queue_depth) |
92d7f7b0 JS |
345 | { |
346 | unsigned long flags; | |
3de2a653 | 347 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 348 | uint32_t evt_posted; |
92d7f7b0 JS |
349 | atomic_inc(&phba->num_cmd_success); |
350 | ||
a257bf90 | 351 | if (vport->cfg_lun_queue_depth <= queue_depth) |
92d7f7b0 | 352 | return; |
92d7f7b0 | 353 | spin_lock_irqsave(&phba->hbalock, flags); |
5ffc266e JS |
354 | if (time_before(jiffies, |
355 | phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) || | |
356 | time_before(jiffies, | |
357 | phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL)) { | |
92d7f7b0 JS |
358 | spin_unlock_irqrestore(&phba->hbalock, flags); |
359 | return; | |
360 | } | |
92d7f7b0 JS |
361 | phba->last_ramp_up_time = jiffies; |
362 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
363 | ||
364 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
365 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
366 | if (!evt_posted) | |
92d7f7b0 | 367 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
368 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
369 | ||
5e9d9b82 JS |
370 | if (!evt_posted) |
371 | lpfc_worker_wake_up(phba); | |
372 | return; | |
92d7f7b0 JS |
373 | } |
374 | ||
9bad7671 | 375 | /** |
3621a710 | 376 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
377 | * @phba: The Hba for which this call is being executed. |
378 | * | |
379 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
380 | * thread.This routine reduces queue depth for all scsi device on each vport | |
381 | * associated with @phba. | |
382 | **/ | |
92d7f7b0 JS |
383 | void |
384 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
385 | { | |
549e55cd JS |
386 | struct lpfc_vport **vports; |
387 | struct Scsi_Host *shost; | |
92d7f7b0 | 388 | struct scsi_device *sdev; |
5ffc266e | 389 | unsigned long new_queue_depth; |
92d7f7b0 | 390 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 391 | int i; |
92d7f7b0 JS |
392 | |
393 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
394 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
395 | ||
549e55cd JS |
396 | vports = lpfc_create_vport_work_array(phba); |
397 | if (vports != NULL) | |
21e9a0a5 | 398 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
399 | shost = lpfc_shost_from_vport(vports[i]); |
400 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 401 | new_queue_depth = |
549e55cd JS |
402 | sdev->queue_depth * num_rsrc_err / |
403 | (num_rsrc_err + num_cmd_success); | |
404 | if (!new_queue_depth) | |
405 | new_queue_depth = sdev->queue_depth - 1; | |
406 | else | |
407 | new_queue_depth = sdev->queue_depth - | |
408 | new_queue_depth; | |
5ffc266e JS |
409 | lpfc_change_queue_depth(sdev, new_queue_depth, |
410 | SCSI_QDEPTH_DEFAULT); | |
549e55cd | 411 | } |
92d7f7b0 | 412 | } |
09372820 | 413 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
414 | atomic_set(&phba->num_rsrc_err, 0); |
415 | atomic_set(&phba->num_cmd_success, 0); | |
416 | } | |
417 | ||
9bad7671 | 418 | /** |
3621a710 | 419 | * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler |
9bad7671 JS |
420 | * @phba: The Hba for which this call is being executed. |
421 | * | |
422 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
423 | * thread.This routine increases queue depth for all scsi device on each vport | |
424 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
425 | * num_cmd_success to zero. | |
426 | **/ | |
92d7f7b0 JS |
427 | void |
428 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
429 | { | |
549e55cd JS |
430 | struct lpfc_vport **vports; |
431 | struct Scsi_Host *shost; | |
92d7f7b0 | 432 | struct scsi_device *sdev; |
549e55cd JS |
433 | int i; |
434 | ||
435 | vports = lpfc_create_vport_work_array(phba); | |
436 | if (vports != NULL) | |
21e9a0a5 | 437 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
438 | shost = lpfc_shost_from_vport(vports[i]); |
439 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
440 | if (vports[i]->cfg_lun_queue_depth <= |
441 | sdev->queue_depth) | |
442 | continue; | |
5ffc266e JS |
443 | lpfc_change_queue_depth(sdev, |
444 | sdev->queue_depth+1, | |
445 | SCSI_QDEPTH_RAMP_UP); | |
549e55cd | 446 | } |
92d7f7b0 | 447 | } |
09372820 | 448 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
449 | atomic_set(&phba->num_rsrc_err, 0); |
450 | atomic_set(&phba->num_cmd_success, 0); | |
451 | } | |
452 | ||
a8e497d5 | 453 | /** |
3621a710 | 454 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
455 | * @phba: Pointer to HBA context object. |
456 | * | |
457 | * This function walks vport list and set each SCSI host to block state | |
458 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
459 | * with EEH when device's PCI slot has been permanently disabled. | |
460 | **/ | |
461 | void | |
462 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
463 | { | |
464 | struct lpfc_vport **vports; | |
465 | struct Scsi_Host *shost; | |
466 | struct scsi_device *sdev; | |
467 | struct fc_rport *rport; | |
468 | int i; | |
469 | ||
470 | vports = lpfc_create_vport_work_array(phba); | |
471 | if (vports != NULL) | |
21e9a0a5 | 472 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
473 | shost = lpfc_shost_from_vport(vports[i]); |
474 | shost_for_each_device(sdev, shost) { | |
475 | rport = starget_to_rport(scsi_target(sdev)); | |
476 | fc_remote_port_delete(rport); | |
477 | } | |
478 | } | |
479 | lpfc_destroy_vport_work_array(phba, vports); | |
480 | } | |
481 | ||
9bad7671 | 482 | /** |
3772a991 | 483 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 484 | * @vport: The virtual port for which this call being executed. |
3772a991 | 485 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 486 | * |
3772a991 JS |
487 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
488 | * the scsi buffer contains all the necessary information needed to initiate | |
489 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
490 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
491 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
492 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
493 | * |
494 | * Return codes: | |
3772a991 JS |
495 | * int - number of scsi buffers that were allocated. |
496 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 497 | **/ |
3772a991 JS |
498 | static int |
499 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 500 | { |
2e0fef85 | 501 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
502 | struct lpfc_scsi_buf *psb; |
503 | struct ulp_bde64 *bpl; | |
504 | IOCB_t *iocb; | |
34b02dcd JS |
505 | dma_addr_t pdma_phys_fcp_cmd; |
506 | dma_addr_t pdma_phys_fcp_rsp; | |
507 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 508 | uint16_t iotag; |
3772a991 | 509 | int bcnt; |
dea3101e | 510 | |
3772a991 JS |
511 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
512 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
513 | if (!psb) | |
514 | break; | |
dea3101e | 515 | |
3772a991 JS |
516 | /* |
517 | * Get memory from the pci pool to map the virt space to pci | |
518 | * bus space for an I/O. The DMA buffer includes space for the | |
519 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
520 | * necessary to support the sg_tablesize. | |
521 | */ | |
522 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
523 | GFP_KERNEL, &psb->dma_handle); | |
524 | if (!psb->data) { | |
525 | kfree(psb); | |
526 | break; | |
527 | } | |
528 | ||
529 | /* Initialize virtual ptrs to dma_buf region. */ | |
530 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
531 | ||
532 | /* Allocate iotag for psb->cur_iocbq. */ | |
533 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
534 | if (iotag == 0) { | |
535 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
536 | psb->data, psb->dma_handle); | |
537 | kfree(psb); | |
538 | break; | |
539 | } | |
540 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
541 | ||
542 | psb->fcp_cmnd = psb->data; | |
543 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
544 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 545 | sizeof(struct fcp_rsp); |
dea3101e | 546 | |
3772a991 JS |
547 | /* Initialize local short-hand pointers. */ |
548 | bpl = psb->fcp_bpl; | |
549 | pdma_phys_fcp_cmd = psb->dma_handle; | |
550 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
551 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
552 | sizeof(struct fcp_rsp); | |
553 | ||
554 | /* | |
555 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
556 | * are sg list bdes. Initialize the first two and leave the | |
557 | * rest for queuecommand. | |
558 | */ | |
559 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
560 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
561 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
562 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
563 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
564 | ||
565 | /* Setup the physical region for the FCP RSP */ | |
566 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
567 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
568 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
569 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
570 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
571 | ||
572 | /* | |
573 | * Since the IOCB for the FCP I/O is built into this | |
574 | * lpfc_scsi_buf, initialize it with all known data now. | |
575 | */ | |
576 | iocb = &psb->cur_iocbq.iocb; | |
577 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
578 | if ((phba->sli_rev == 3) && | |
579 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
580 | /* fill in immediate fcp command BDE */ | |
581 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
582 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
583 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
584 | unsli3.fcp_ext.icd); | |
585 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
586 | iocb->ulpBdeCount = 0; | |
587 | iocb->ulpLe = 0; | |
25985edc | 588 | /* fill in response BDE */ |
3772a991 JS |
589 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = |
590 | BUFF_TYPE_BDE_64; | |
591 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
592 | sizeof(struct fcp_rsp); | |
593 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
594 | putPaddrLow(pdma_phys_fcp_rsp); | |
595 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
596 | putPaddrHigh(pdma_phys_fcp_rsp); | |
597 | } else { | |
598 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
599 | iocb->un.fcpi64.bdl.bdeSize = | |
600 | (2 * sizeof(struct ulp_bde64)); | |
601 | iocb->un.fcpi64.bdl.addrLow = | |
602 | putPaddrLow(pdma_phys_bpl); | |
603 | iocb->un.fcpi64.bdl.addrHigh = | |
604 | putPaddrHigh(pdma_phys_bpl); | |
605 | iocb->ulpBdeCount = 1; | |
606 | iocb->ulpLe = 1; | |
607 | } | |
608 | iocb->ulpClass = CLASS3; | |
609 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 | 610 | /* Put it back into the SCSI buffer list */ |
eee8877e | 611 | psb->cur_iocbq.context1 = psb; |
1c6f4ef5 | 612 | lpfc_release_scsi_buf_s3(phba, psb); |
dea3101e | 613 | |
34b02dcd | 614 | } |
dea3101e | 615 | |
3772a991 | 616 | return bcnt; |
dea3101e JB |
617 | } |
618 | ||
1151e3ec JS |
619 | /** |
620 | * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport | |
621 | * @vport: pointer to lpfc vport data structure. | |
622 | * | |
623 | * This routine is invoked by the vport cleanup for deletions and the cleanup | |
624 | * for an ndlp on removal. | |
625 | **/ | |
626 | void | |
627 | lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) | |
628 | { | |
629 | struct lpfc_hba *phba = vport->phba; | |
630 | struct lpfc_scsi_buf *psb, *next_psb; | |
631 | unsigned long iflag = 0; | |
632 | ||
633 | spin_lock_irqsave(&phba->hbalock, iflag); | |
634 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
635 | list_for_each_entry_safe(psb, next_psb, | |
636 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
637 | if (psb->rdata && psb->rdata->pnode | |
638 | && psb->rdata->pnode->vport == vport) | |
639 | psb->rdata = NULL; | |
640 | } | |
641 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
642 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
643 | } | |
644 | ||
da0436e9 JS |
645 | /** |
646 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
647 | * @phba: pointer to lpfc hba data structure. | |
648 | * @axri: pointer to the fcp xri abort wcqe structure. | |
649 | * | |
650 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
651 | * FCP aborted xri. | |
652 | **/ | |
653 | void | |
654 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
655 | struct sli4_wcqe_xri_aborted *axri) | |
656 | { | |
657 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
19ca7609 | 658 | uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); |
da0436e9 JS |
659 | struct lpfc_scsi_buf *psb, *next_psb; |
660 | unsigned long iflag = 0; | |
0f65ff68 JS |
661 | struct lpfc_iocbq *iocbq; |
662 | int i; | |
19ca7609 JS |
663 | struct lpfc_nodelist *ndlp; |
664 | int rrq_empty = 0; | |
589a52d6 | 665 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
da0436e9 | 666 | |
0f65ff68 JS |
667 | spin_lock_irqsave(&phba->hbalock, iflag); |
668 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
da0436e9 JS |
669 | list_for_each_entry_safe(psb, next_psb, |
670 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
671 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
672 | list_del(&psb->list); | |
341af102 | 673 | psb->exch_busy = 0; |
da0436e9 | 674 | psb->status = IOSTAT_SUCCESS; |
0f65ff68 JS |
675 | spin_unlock( |
676 | &phba->sli4_hba.abts_scsi_buf_list_lock); | |
1151e3ec JS |
677 | if (psb->rdata && psb->rdata->pnode) |
678 | ndlp = psb->rdata->pnode; | |
679 | else | |
680 | ndlp = NULL; | |
681 | ||
19ca7609 | 682 | rrq_empty = list_empty(&phba->active_rrq_list); |
0f65ff68 | 683 | spin_unlock_irqrestore(&phba->hbalock, iflag); |
19ca7609 JS |
684 | if (ndlp) |
685 | lpfc_set_rrq_active(phba, ndlp, xri, rxid, 1); | |
da0436e9 | 686 | lpfc_release_scsi_buf_s4(phba, psb); |
19ca7609 JS |
687 | if (rrq_empty) |
688 | lpfc_worker_wake_up(phba); | |
da0436e9 JS |
689 | return; |
690 | } | |
691 | } | |
0f65ff68 JS |
692 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); |
693 | for (i = 1; i <= phba->sli.last_iotag; i++) { | |
694 | iocbq = phba->sli.iocbq_lookup[i]; | |
695 | ||
696 | if (!(iocbq->iocb_flag & LPFC_IO_FCP) || | |
697 | (iocbq->iocb_flag & LPFC_IO_LIBDFC)) | |
698 | continue; | |
699 | if (iocbq->sli4_xritag != xri) | |
700 | continue; | |
701 | psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); | |
702 | psb->exch_busy = 0; | |
703 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
589a52d6 JS |
704 | if (pring->txq_cnt) |
705 | lpfc_worker_wake_up(phba); | |
0f65ff68 JS |
706 | return; |
707 | ||
708 | } | |
709 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
da0436e9 JS |
710 | } |
711 | ||
712 | /** | |
713 | * lpfc_sli4_repost_scsi_sgl_list - Repsot the Scsi buffers sgl pages as block | |
714 | * @phba: pointer to lpfc hba data structure. | |
715 | * | |
716 | * This routine walks the list of scsi buffers that have been allocated and | |
717 | * repost them to the HBA by using SGL block post. This is needed after a | |
718 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
719 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
720 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
721 | * | |
722 | * Returns: 0 = success, non-zero failure. | |
723 | **/ | |
724 | int | |
725 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
726 | { | |
727 | struct lpfc_scsi_buf *psb; | |
728 | int index, status, bcnt = 0, rcnt = 0, rc = 0; | |
729 | LIST_HEAD(sblist); | |
730 | ||
731 | for (index = 0; index < phba->sli4_hba.scsi_xri_cnt; index++) { | |
732 | psb = phba->sli4_hba.lpfc_scsi_psb_array[index]; | |
733 | if (psb) { | |
734 | /* Remove from SCSI buffer list */ | |
735 | list_del(&psb->list); | |
736 | /* Add it to a local SCSI buffer list */ | |
737 | list_add_tail(&psb->list, &sblist); | |
738 | if (++rcnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
739 | bcnt = rcnt; | |
740 | rcnt = 0; | |
741 | } | |
742 | } else | |
743 | /* A hole present in the XRI array, need to skip */ | |
744 | bcnt = rcnt; | |
745 | ||
746 | if (index == phba->sli4_hba.scsi_xri_cnt - 1) | |
747 | /* End of XRI array for SCSI buffer, complete */ | |
748 | bcnt = rcnt; | |
749 | ||
750 | /* Continue until collect up to a nembed page worth of sgls */ | |
751 | if (bcnt == 0) | |
752 | continue; | |
753 | /* Now, post the SCSI buffer list sgls as a block */ | |
6d368e53 JS |
754 | if (!phba->sli4_hba.extents_in_use) |
755 | status = lpfc_sli4_post_scsi_sgl_block(phba, | |
756 | &sblist, | |
757 | bcnt); | |
758 | else | |
759 | status = lpfc_sli4_post_scsi_sgl_blk_ext(phba, | |
760 | &sblist, | |
761 | bcnt); | |
da0436e9 JS |
762 | /* Reset SCSI buffer count for next round of posting */ |
763 | bcnt = 0; | |
764 | while (!list_empty(&sblist)) { | |
765 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
766 | list); | |
767 | if (status) { | |
768 | /* Put this back on the abort scsi list */ | |
341af102 | 769 | psb->exch_busy = 1; |
da0436e9 | 770 | rc++; |
341af102 JS |
771 | } else { |
772 | psb->exch_busy = 0; | |
da0436e9 | 773 | psb->status = IOSTAT_SUCCESS; |
341af102 | 774 | } |
da0436e9 JS |
775 | /* Put it back into the SCSI buffer list */ |
776 | lpfc_release_scsi_buf_s4(phba, psb); | |
777 | } | |
778 | } | |
779 | return rc; | |
780 | } | |
781 | ||
782 | /** | |
783 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
784 | * @vport: The virtual port for which this call being executed. | |
785 | * @num_to_allocate: The requested number of buffers to allocate. | |
786 | * | |
787 | * This routine allocates a scsi buffer for device with SLI-4 interface spec, | |
788 | * the scsi buffer contains all the necessary information needed to initiate | |
789 | * a SCSI I/O. | |
790 | * | |
791 | * Return codes: | |
792 | * int - number of scsi buffers that were allocated. | |
793 | * 0 = failure, less than num_to_alloc is a partial failure. | |
794 | **/ | |
795 | static int | |
796 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
797 | { | |
798 | struct lpfc_hba *phba = vport->phba; | |
799 | struct lpfc_scsi_buf *psb; | |
800 | struct sli4_sge *sgl; | |
801 | IOCB_t *iocb; | |
802 | dma_addr_t pdma_phys_fcp_cmd; | |
803 | dma_addr_t pdma_phys_fcp_rsp; | |
804 | dma_addr_t pdma_phys_bpl, pdma_phys_bpl1; | |
6d368e53 | 805 | uint16_t iotag, last_xritag = NO_XRI, lxri = 0; |
da0436e9 JS |
806 | int status = 0, index; |
807 | int bcnt; | |
808 | int non_sequential_xri = 0; | |
da0436e9 JS |
809 | LIST_HEAD(sblist); |
810 | ||
811 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { | |
812 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
813 | if (!psb) | |
814 | break; | |
815 | ||
816 | /* | |
817 | * Get memory from the pci pool to map the virt space to pci bus | |
818 | * space for an I/O. The DMA buffer includes space for the | |
819 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
820 | * necessary to support the sg_tablesize. | |
821 | */ | |
822 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
823 | GFP_KERNEL, &psb->dma_handle); | |
824 | if (!psb->data) { | |
825 | kfree(psb); | |
826 | break; | |
827 | } | |
828 | ||
829 | /* Initialize virtual ptrs to dma_buf region. */ | |
830 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
831 | ||
832 | /* Allocate iotag for psb->cur_iocbq. */ | |
833 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
834 | if (iotag == 0) { | |
b92938b4 JS |
835 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
836 | psb->data, psb->dma_handle); | |
da0436e9 JS |
837 | kfree(psb); |
838 | break; | |
839 | } | |
840 | ||
6d368e53 JS |
841 | lxri = lpfc_sli4_next_xritag(phba); |
842 | if (lxri == NO_XRI) { | |
da0436e9 JS |
843 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
844 | psb->data, psb->dma_handle); | |
845 | kfree(psb); | |
846 | break; | |
847 | } | |
6d368e53 JS |
848 | psb->cur_iocbq.sli4_lxritag = lxri; |
849 | psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri]; | |
da0436e9 JS |
850 | if (last_xritag != NO_XRI |
851 | && psb->cur_iocbq.sli4_xritag != (last_xritag+1)) { | |
852 | non_sequential_xri = 1; | |
853 | } else | |
854 | list_add_tail(&psb->list, &sblist); | |
855 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
856 | ||
857 | index = phba->sli4_hba.scsi_xri_cnt++; | |
858 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
859 | ||
860 | psb->fcp_bpl = psb->data; | |
861 | psb->fcp_cmnd = (psb->data + phba->cfg_sg_dma_buf_size) | |
862 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
863 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + | |
864 | sizeof(struct fcp_cmnd)); | |
865 | ||
866 | /* Initialize local short-hand pointers. */ | |
867 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
868 | pdma_phys_bpl = psb->dma_handle; | |
869 | pdma_phys_fcp_cmd = | |
870 | (psb->dma_handle + phba->cfg_sg_dma_buf_size) | |
871 | - (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
872 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); | |
873 | ||
874 | /* | |
875 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
876 | * are sg list bdes. Initialize the first two and leave the | |
877 | * rest for queuecommand. | |
878 | */ | |
879 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
880 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
0558056c | 881 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
882 | bf_set(lpfc_sli4_sge_last, sgl, 0); |
883 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 884 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); |
da0436e9 JS |
885 | sgl++; |
886 | ||
887 | /* Setup the physical region for the FCP RSP */ | |
888 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
889 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
0558056c | 890 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
891 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
892 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 893 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); |
da0436e9 JS |
894 | |
895 | /* | |
896 | * Since the IOCB for the FCP I/O is built into this | |
897 | * lpfc_scsi_buf, initialize it with all known data now. | |
898 | */ | |
899 | iocb = &psb->cur_iocbq.iocb; | |
900 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
901 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
902 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
903 | * We are setting the bpl to point to out sgl. An sgl's | |
904 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
905 | */ | |
906 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
907 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
908 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
909 | iocb->ulpBdeCount = 1; | |
910 | iocb->ulpLe = 1; | |
911 | iocb->ulpClass = CLASS3; | |
eee8877e | 912 | psb->cur_iocbq.context1 = psb; |
da0436e9 JS |
913 | if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) |
914 | pdma_phys_bpl1 = pdma_phys_bpl + SGL_PAGE_SIZE; | |
915 | else | |
916 | pdma_phys_bpl1 = 0; | |
917 | psb->dma_phys_bpl = pdma_phys_bpl; | |
918 | phba->sli4_hba.lpfc_scsi_psb_array[index] = psb; | |
919 | if (non_sequential_xri) { | |
920 | status = lpfc_sli4_post_sgl(phba, pdma_phys_bpl, | |
921 | pdma_phys_bpl1, | |
922 | psb->cur_iocbq.sli4_xritag); | |
923 | if (status) { | |
924 | /* Put this back on the abort scsi list */ | |
341af102 | 925 | psb->exch_busy = 1; |
341af102 JS |
926 | } else { |
927 | psb->exch_busy = 0; | |
da0436e9 | 928 | psb->status = IOSTAT_SUCCESS; |
341af102 | 929 | } |
da0436e9 JS |
930 | /* Put it back into the SCSI buffer list */ |
931 | lpfc_release_scsi_buf_s4(phba, psb); | |
932 | break; | |
933 | } | |
934 | } | |
935 | if (bcnt) { | |
6d368e53 JS |
936 | if (!phba->sli4_hba.extents_in_use) |
937 | status = lpfc_sli4_post_scsi_sgl_block(phba, | |
938 | &sblist, | |
939 | bcnt); | |
940 | else | |
941 | status = lpfc_sli4_post_scsi_sgl_blk_ext(phba, | |
942 | &sblist, | |
943 | bcnt); | |
944 | ||
945 | if (status) { | |
946 | lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, | |
947 | "3021 SCSI SGL post error %d\n", | |
948 | status); | |
949 | bcnt = 0; | |
950 | } | |
da0436e9 JS |
951 | /* Reset SCSI buffer count for next round of posting */ |
952 | while (!list_empty(&sblist)) { | |
953 | list_remove_head(&sblist, psb, struct lpfc_scsi_buf, | |
954 | list); | |
955 | if (status) { | |
956 | /* Put this back on the abort scsi list */ | |
341af102 | 957 | psb->exch_busy = 1; |
341af102 JS |
958 | } else { |
959 | psb->exch_busy = 0; | |
da0436e9 | 960 | psb->status = IOSTAT_SUCCESS; |
341af102 | 961 | } |
da0436e9 JS |
962 | /* Put it back into the SCSI buffer list */ |
963 | lpfc_release_scsi_buf_s4(phba, psb); | |
964 | } | |
965 | } | |
966 | ||
d7c47992 | 967 | return bcnt + non_sequential_xri; |
da0436e9 JS |
968 | } |
969 | ||
9bad7671 | 970 | /** |
3772a991 JS |
971 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
972 | * @vport: The virtual port for which this call being executed. | |
973 | * @num_to_allocate: The requested number of buffers to allocate. | |
974 | * | |
975 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
976 | * the lpfc_hba struct. | |
977 | * | |
978 | * Return codes: | |
979 | * int - number of scsi buffers that were allocated. | |
980 | * 0 = failure, less than num_to_alloc is a partial failure. | |
981 | **/ | |
982 | static inline int | |
983 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
984 | { | |
985 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
986 | } | |
987 | ||
988 | /** | |
19ca7609 | 989 | * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA |
3772a991 | 990 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
991 | * |
992 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
993 | * and returns to caller. | |
994 | * | |
995 | * Return codes: | |
996 | * NULL - Error | |
997 | * Pointer to lpfc_scsi_buf - Success | |
998 | **/ | |
455c53ec | 999 | static struct lpfc_scsi_buf* |
19ca7609 | 1000 | lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) |
dea3101e | 1001 | { |
0bd4ca25 JSEC |
1002 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
1003 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 1004 | unsigned long iflag = 0; |
0bd4ca25 | 1005 | |
875fbdfe | 1006 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 1007 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
1008 | if (lpfc_cmd) { |
1009 | lpfc_cmd->seg_cnt = 0; | |
1010 | lpfc_cmd->nonsg_phys = 0; | |
e2a0a9d6 | 1011 | lpfc_cmd->prot_seg_cnt = 0; |
1dcb58e5 | 1012 | } |
875fbdfe | 1013 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
1014 | return lpfc_cmd; |
1015 | } | |
19ca7609 JS |
1016 | /** |
1017 | * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1018 | * @phba: The HBA for which this call is being executed. | |
1019 | * | |
1020 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1021 | * and returns to caller. | |
1022 | * | |
1023 | * Return codes: | |
1024 | * NULL - Error | |
1025 | * Pointer to lpfc_scsi_buf - Success | |
1026 | **/ | |
1027 | static struct lpfc_scsi_buf* | |
1028 | lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1029 | { | |
1151e3ec | 1030 | struct lpfc_scsi_buf *lpfc_cmd ; |
19ca7609 JS |
1031 | unsigned long iflag = 0; |
1032 | int found = 0; | |
1033 | ||
1034 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
1151e3ec JS |
1035 | list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list, |
1036 | list) { | |
19ca7609 | 1037 | if (lpfc_test_rrq_active(phba, ndlp, |
1151e3ec JS |
1038 | lpfc_cmd->cur_iocbq.sli4_xritag)) |
1039 | continue; | |
1040 | list_del(&lpfc_cmd->list); | |
19ca7609 JS |
1041 | found = 1; |
1042 | lpfc_cmd->seg_cnt = 0; | |
1043 | lpfc_cmd->nonsg_phys = 0; | |
1044 | lpfc_cmd->prot_seg_cnt = 0; | |
1151e3ec | 1045 | break; |
19ca7609 | 1046 | } |
1151e3ec JS |
1047 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, |
1048 | iflag); | |
1049 | if (!found) | |
1050 | return NULL; | |
1051 | else | |
1052 | return lpfc_cmd; | |
19ca7609 JS |
1053 | } |
1054 | /** | |
1055 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1056 | * @phba: The HBA for which this call is being executed. | |
1057 | * | |
1058 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1059 | * and returns to caller. | |
1060 | * | |
1061 | * Return codes: | |
1062 | * NULL - Error | |
1063 | * Pointer to lpfc_scsi_buf - Success | |
1064 | **/ | |
1065 | static struct lpfc_scsi_buf* | |
1066 | lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1067 | { | |
1068 | return phba->lpfc_get_scsi_buf(phba, ndlp); | |
1069 | } | |
dea3101e | 1070 | |
9bad7671 | 1071 | /** |
3772a991 | 1072 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
1073 | * @phba: The Hba for which this call is being executed. |
1074 | * @psb: The scsi buffer which is being released. | |
1075 | * | |
1076 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1077 | * lpfc_scsi_buf_list list. | |
1078 | **/ | |
0bd4ca25 | 1079 | static void |
3772a991 | 1080 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 1081 | { |
875fbdfe | 1082 | unsigned long iflag = 0; |
dea3101e | 1083 | |
875fbdfe | 1084 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 1085 | psb->pCmd = NULL; |
dea3101e | 1086 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 1087 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e JB |
1088 | } |
1089 | ||
da0436e9 JS |
1090 | /** |
1091 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
1092 | * @phba: The Hba for which this call is being executed. | |
1093 | * @psb: The scsi buffer which is being released. | |
1094 | * | |
1095 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1096 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
1097 | * and cannot be reused for at least RA_TOV amount of time if it was | |
1098 | * aborted. | |
1099 | **/ | |
1100 | static void | |
1101 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1102 | { | |
1103 | unsigned long iflag = 0; | |
1104 | ||
341af102 | 1105 | if (psb->exch_busy) { |
da0436e9 JS |
1106 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, |
1107 | iflag); | |
1108 | psb->pCmd = NULL; | |
1109 | list_add_tail(&psb->list, | |
1110 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
1111 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
1112 | iflag); | |
1113 | } else { | |
1114 | ||
1115 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); | |
1116 | psb->pCmd = NULL; | |
1117 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); | |
1118 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); | |
1119 | } | |
1120 | } | |
1121 | ||
9bad7671 | 1122 | /** |
3772a991 JS |
1123 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
1124 | * @phba: The Hba for which this call is being executed. | |
1125 | * @psb: The scsi buffer which is being released. | |
1126 | * | |
1127 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1128 | * lpfc_scsi_buf_list list. | |
1129 | **/ | |
1130 | static void | |
1131 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1132 | { | |
1133 | ||
1134 | phba->lpfc_release_scsi_buf(phba, psb); | |
1135 | } | |
1136 | ||
1137 | /** | |
1138 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
1139 | * @phba: The Hba for which this call is being executed. |
1140 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1141 | * | |
1142 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
1143 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
1144 | * through sg elements and format the bdea. This routine also initializes all | |
1145 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
1146 | * |
1147 | * Return codes: | |
1148 | * 1 - Error | |
1149 | * 0 - Success | |
1150 | **/ | |
dea3101e | 1151 | static int |
3772a991 | 1152 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e JB |
1153 | { |
1154 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1155 | struct scatterlist *sgel = NULL; | |
1156 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1157 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
0f65ff68 | 1158 | struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; |
dea3101e | 1159 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
34b02dcd | 1160 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1161 | dma_addr_t physaddr; |
34b02dcd | 1162 | uint32_t num_bde = 0; |
a0b4f78f | 1163 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e JB |
1164 | |
1165 | /* | |
1166 | * There are three possibilities here - use scatter-gather segment, use | |
1167 | * the single mapping, or neither. Start the lpfc command prep by | |
1168 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1169 | * data bde entry. | |
1170 | */ | |
1171 | bpl += 2; | |
c59fd9eb | 1172 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
1173 | /* |
1174 | * The driver stores the segment count returned from pci_map_sg | |
1175 | * because this a count of dma-mappings used to map the use_sg | |
1176 | * pages. They are not guaranteed to be the same for those | |
1177 | * architectures that implement an IOMMU. | |
1178 | */ | |
dea3101e | 1179 | |
c59fd9eb FT |
1180 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1181 | scsi_sg_count(scsi_cmnd), datadir); | |
1182 | if (unlikely(!nseg)) | |
1183 | return 1; | |
1184 | ||
a0b4f78f | 1185 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1186 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1187 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1188 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1189 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1190 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1191 | lpfc_cmd->seg_cnt); |
a0b4f78f | 1192 | scsi_dma_unmap(scsi_cmnd); |
dea3101e JB |
1193 | return 1; |
1194 | } | |
1195 | ||
1196 | /* | |
1197 | * The driver established a maximum scatter-gather segment count | |
1198 | * during probe that limits the number of sg elements in any | |
1199 | * single scsi command. Just run through the seg_cnt and format | |
1200 | * the bde's. | |
34b02dcd JS |
1201 | * When using SLI-3 the driver will try to fit all the BDEs into |
1202 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1203 | * does for SLI-2 mode. | |
dea3101e | 1204 | */ |
34b02dcd | 1205 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1206 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1207 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1208 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
0f65ff68 | 1209 | !(iocbq->iocb_flag & DSS_SECURITY_OP) && |
34b02dcd JS |
1210 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1211 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1212 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1213 | data_bde->addrLow = putPaddrLow(physaddr); | |
1214 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1215 | data_bde++; | |
1216 | } else { | |
1217 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1218 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1219 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1220 | bpl->addrLow = | |
1221 | le32_to_cpu(putPaddrLow(physaddr)); | |
1222 | bpl->addrHigh = | |
1223 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1224 | bpl++; | |
1225 | } | |
dea3101e | 1226 | } |
c59fd9eb | 1227 | } |
dea3101e JB |
1228 | |
1229 | /* | |
1230 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1231 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1232 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1233 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1234 | */ |
e2a0a9d6 | 1235 | if (phba->sli_rev == 3 && |
0f65ff68 JS |
1236 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
1237 | !(iocbq->iocb_flag & DSS_SECURITY_OP)) { | |
34b02dcd JS |
1238 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1239 | /* | |
1240 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1241 | * This I/O has more than 3 BDE so the 1st data bde will | |
1242 | * be a BPL that is filled in here. | |
1243 | */ | |
1244 | physaddr = lpfc_cmd->dma_handle; | |
1245 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1246 | data_bde->tus.f.bdeSize = (num_bde * | |
1247 | sizeof(struct ulp_bde64)); | |
1248 | physaddr += (sizeof(struct fcp_cmnd) + | |
1249 | sizeof(struct fcp_rsp) + | |
1250 | (2 * sizeof(struct ulp_bde64))); | |
1251 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1252 | data_bde->addrLow = putPaddrLow(physaddr); | |
25985edc | 1253 | /* ebde count includes the response bde and data bpl */ |
34b02dcd JS |
1254 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; |
1255 | } else { | |
25985edc | 1256 | /* ebde count includes the response bde and data bdes */ |
34b02dcd JS |
1257 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
1258 | } | |
1259 | } else { | |
1260 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1261 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
0f65ff68 | 1262 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
34b02dcd | 1263 | } |
09372820 | 1264 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1265 | |
1266 | /* | |
1267 | * Due to difference in data length between DIF/non-DIF paths, | |
1268 | * we need to set word 4 of IOCB here | |
1269 | */ | |
a257bf90 | 1270 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1271 | return 0; |
1272 | } | |
1273 | ||
f9bb2da1 JS |
1274 | static inline unsigned |
1275 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
1276 | { | |
1277 | return sc->device->sector_size; | |
1278 | } | |
1279 | ||
1280 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
1281 | /* | |
1282 | * Given a scsi cmnd, determine the BlockGuard tags to be used with it | |
1283 | * @sc: The SCSI command to examine | |
1284 | * @reftag: (out) BlockGuard reference tag for transmitted data | |
1285 | * @apptag: (out) BlockGuard application tag for transmitted data | |
1286 | * @new_guard (in) Value to replace CRC with if needed | |
1287 | * | |
1288 | * Returns (1) if error injection was performed, (0) otherwise | |
1289 | */ | |
1290 | static int | |
1291 | lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1292 | uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) | |
1293 | { | |
1294 | struct scatterlist *sgpe; /* s/g prot entry */ | |
1295 | struct scatterlist *sgde; /* s/g data entry */ | |
1296 | struct scsi_dif_tuple *src; | |
1297 | uint32_t op = scsi_get_prot_op(sc); | |
1298 | uint32_t blksize; | |
1299 | uint32_t numblks; | |
1300 | sector_t lba; | |
1301 | int rc = 0; | |
1302 | ||
1303 | if (op == SCSI_PROT_NORMAL) | |
1304 | return 0; | |
1305 | ||
1306 | lba = scsi_get_lba(sc); | |
1307 | if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { | |
1308 | blksize = lpfc_cmd_blksize(sc); | |
1309 | numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; | |
1310 | ||
1311 | /* Make sure we have the right LBA if one is specified */ | |
1312 | if ((phba->lpfc_injerr_lba < lba) || | |
1313 | (phba->lpfc_injerr_lba >= (lba + numblks))) | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | sgpe = scsi_prot_sglist(sc); | |
1318 | sgde = scsi_sglist(sc); | |
1319 | ||
1320 | /* Should we change the Reference Tag */ | |
1321 | if (reftag) { | |
1322 | /* | |
1323 | * If we are SCSI_PROT_WRITE_STRIP, the protection data is | |
1324 | * being stripped from the wire, thus it doesn't matter. | |
1325 | */ | |
1326 | if ((op == SCSI_PROT_WRITE_PASS) || | |
1327 | (op == SCSI_PROT_WRITE_INSERT)) { | |
1328 | if (phba->lpfc_injerr_wref_cnt) { | |
1329 | ||
1330 | /* DEADBEEF will be the reftag on the wire */ | |
1331 | *reftag = 0xDEADBEEF; | |
1332 | phba->lpfc_injerr_wref_cnt--; | |
1333 | phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; | |
1334 | rc = 1; | |
1335 | ||
1336 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1337 | "9081 BLKGRD: Injecting reftag error: " | |
1338 | "write lba x%lx\n", (unsigned long)lba); | |
1339 | } | |
1340 | } else { | |
1341 | if (phba->lpfc_injerr_rref_cnt) { | |
1342 | *reftag = 0xDEADBEEF; | |
1343 | phba->lpfc_injerr_rref_cnt--; | |
1344 | phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; | |
1345 | rc = 1; | |
1346 | ||
1347 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1348 | "9076 BLKGRD: Injecting reftag error: " | |
1349 | "read lba x%lx\n", (unsigned long)lba); | |
1350 | } | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | /* Should we change the Application Tag */ | |
1355 | if (apptag) { | |
1356 | /* | |
1357 | * If we are SCSI_PROT_WRITE_STRIP, the protection data is | |
1358 | * being stripped from the wire, thus it doesn't matter. | |
1359 | */ | |
1360 | if ((op == SCSI_PROT_WRITE_PASS) || | |
1361 | (op == SCSI_PROT_WRITE_INSERT)) { | |
1362 | if (phba->lpfc_injerr_wapp_cnt) { | |
1363 | ||
1364 | /* DEAD will be the apptag on the wire */ | |
1365 | *apptag = 0xDEAD; | |
1366 | phba->lpfc_injerr_wapp_cnt--; | |
1367 | phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; | |
1368 | rc = 1; | |
1369 | ||
1370 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1371 | "9077 BLKGRD: Injecting apptag error: " | |
1372 | "write lba x%lx\n", (unsigned long)lba); | |
1373 | } | |
1374 | } else { | |
1375 | if (phba->lpfc_injerr_rapp_cnt) { | |
1376 | *apptag = 0xDEAD; | |
1377 | phba->lpfc_injerr_rapp_cnt--; | |
1378 | phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; | |
1379 | rc = 1; | |
1380 | ||
1381 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1382 | "9078 BLKGRD: Injecting apptag error: " | |
1383 | "read lba x%lx\n", (unsigned long)lba); | |
1384 | } | |
1385 | } | |
1386 | } | |
1387 | ||
1388 | /* Should we change the Guard Tag */ | |
1389 | ||
1390 | /* | |
1391 | * If we are SCSI_PROT_WRITE_INSERT, the protection data is | |
1392 | * being on the wire is being fully generated on the HBA. | |
1393 | * The host cannot change it or force an error. | |
1394 | */ | |
1395 | if (((op == SCSI_PROT_WRITE_STRIP) || | |
1396 | (op == SCSI_PROT_WRITE_PASS)) && | |
1397 | phba->lpfc_injerr_wgrd_cnt) { | |
1398 | if (sgpe) { | |
1399 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); | |
1400 | /* | |
1401 | * Just inject an error in the first | |
1402 | * prot block. | |
1403 | */ | |
1404 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1405 | "9079 BLKGRD: Injecting guard error: " | |
1406 | "write lba x%lx oldGuard x%x refTag x%x\n", | |
1407 | (unsigned long)lba, src->guard_tag, | |
1408 | src->ref_tag); | |
1409 | ||
1410 | src->guard_tag = (uint16_t)new_guard; | |
1411 | phba->lpfc_injerr_wgrd_cnt--; | |
1412 | phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; | |
1413 | rc = 1; | |
1414 | ||
1415 | } else { | |
1416 | blksize = lpfc_cmd_blksize(sc); | |
1417 | /* | |
1418 | * Jump past the first data block | |
1419 | * and inject an error in the | |
1420 | * prot data. The prot data is already | |
1421 | * embedded after the regular data. | |
1422 | */ | |
1423 | src = (struct scsi_dif_tuple *) | |
1424 | (sg_virt(sgde) + blksize); | |
1425 | ||
1426 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1427 | "9080 BLKGRD: Injecting guard error: " | |
1428 | "write lba x%lx oldGuard x%x refTag x%x\n", | |
1429 | (unsigned long)lba, src->guard_tag, | |
1430 | src->ref_tag); | |
1431 | ||
1432 | src->guard_tag = (uint16_t)new_guard; | |
1433 | phba->lpfc_injerr_wgrd_cnt--; | |
1434 | phba->lpfc_injerr_lba = LPFC_INJERR_LBA_OFF; | |
1435 | rc = 1; | |
1436 | } | |
1437 | } | |
1438 | return rc; | |
1439 | } | |
1440 | #endif | |
1441 | ||
e2a0a9d6 | 1442 | /* |
6c8eea54 JS |
1443 | * Given a scsi cmnd, determine the BlockGuard opcodes to be used with it |
1444 | * @sc: The SCSI command to examine | |
1445 | * @txopt: (out) BlockGuard operation for transmitted data | |
1446 | * @rxopt: (out) BlockGuard operation for received data | |
1447 | * | |
1448 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1449 | * | |
e2a0a9d6 JS |
1450 | */ |
1451 | static int | |
6c8eea54 JS |
1452 | lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, |
1453 | uint8_t *txop, uint8_t *rxop) | |
e2a0a9d6 JS |
1454 | { |
1455 | uint8_t guard_type = scsi_host_get_guard(sc->device->host); | |
6c8eea54 | 1456 | uint8_t ret = 0; |
e2a0a9d6 JS |
1457 | |
1458 | if (guard_type == SHOST_DIX_GUARD_IP) { | |
1459 | switch (scsi_get_prot_op(sc)) { | |
1460 | case SCSI_PROT_READ_INSERT: | |
1461 | case SCSI_PROT_WRITE_STRIP: | |
6c8eea54 JS |
1462 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
1463 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; | |
e2a0a9d6 JS |
1464 | break; |
1465 | ||
1466 | case SCSI_PROT_READ_STRIP: | |
1467 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 JS |
1468 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
1469 | *rxop = BG_OP_IN_CRC_OUT_NODIF; | |
e2a0a9d6 JS |
1470 | break; |
1471 | ||
c6af4042 MP |
1472 | case SCSI_PROT_READ_PASS: |
1473 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 JS |
1474 | *txop = BG_OP_IN_CSUM_OUT_CRC; |
1475 | *rxop = BG_OP_IN_CRC_OUT_CSUM; | |
e2a0a9d6 JS |
1476 | break; |
1477 | ||
e2a0a9d6 JS |
1478 | case SCSI_PROT_NORMAL: |
1479 | default: | |
6a9c52cf | 1480 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1481 | "9063 BLKGRD: Bad op/guard:%d/IP combination\n", |
1482 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1483 | ret = 1; |
e2a0a9d6 JS |
1484 | break; |
1485 | ||
1486 | } | |
7c56b9fd | 1487 | } else { |
e2a0a9d6 JS |
1488 | switch (scsi_get_prot_op(sc)) { |
1489 | case SCSI_PROT_READ_STRIP: | |
1490 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 JS |
1491 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
1492 | *rxop = BG_OP_IN_CRC_OUT_NODIF; | |
e2a0a9d6 JS |
1493 | break; |
1494 | ||
1495 | case SCSI_PROT_READ_PASS: | |
1496 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 JS |
1497 | *txop = BG_OP_IN_CRC_OUT_CRC; |
1498 | *rxop = BG_OP_IN_CRC_OUT_CRC; | |
e2a0a9d6 JS |
1499 | break; |
1500 | ||
e2a0a9d6 JS |
1501 | case SCSI_PROT_READ_INSERT: |
1502 | case SCSI_PROT_WRITE_STRIP: | |
7c56b9fd JS |
1503 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
1504 | *rxop = BG_OP_IN_NODIF_OUT_CRC; | |
1505 | break; | |
1506 | ||
e2a0a9d6 JS |
1507 | case SCSI_PROT_NORMAL: |
1508 | default: | |
6a9c52cf | 1509 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1510 | "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", |
1511 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1512 | ret = 1; |
e2a0a9d6 JS |
1513 | break; |
1514 | } | |
e2a0a9d6 JS |
1515 | } |
1516 | ||
6c8eea54 | 1517 | return ret; |
e2a0a9d6 JS |
1518 | } |
1519 | ||
e2a0a9d6 JS |
1520 | /* |
1521 | * This function sets up buffer list for protection groups of | |
1522 | * type LPFC_PG_TYPE_NO_DIF | |
1523 | * | |
1524 | * This is usually used when the HBA is instructed to generate | |
1525 | * DIFs and insert them into data stream (or strip DIF from | |
1526 | * incoming data stream) | |
1527 | * | |
1528 | * The buffer list consists of just one protection group described | |
1529 | * below: | |
1530 | * +-------------------------+ | |
6c8eea54 JS |
1531 | * start of prot group --> | PDE_5 | |
1532 | * +-------------------------+ | |
1533 | * | PDE_6 | | |
e2a0a9d6 JS |
1534 | * +-------------------------+ |
1535 | * | Data BDE | | |
1536 | * +-------------------------+ | |
1537 | * |more Data BDE's ... (opt)| | |
1538 | * +-------------------------+ | |
1539 | * | |
1540 | * @sc: pointer to scsi command we're working on | |
1541 | * @bpl: pointer to buffer list for protection groups | |
1542 | * @datacnt: number of segments of data that have been dma mapped | |
1543 | * | |
1544 | * Note: Data s/g buffers have been dma mapped | |
1545 | */ | |
1546 | static int | |
1547 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1548 | struct ulp_bde64 *bpl, int datasegcnt) | |
1549 | { | |
1550 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
6c8eea54 JS |
1551 | struct lpfc_pde5 *pde5 = NULL; |
1552 | struct lpfc_pde6 *pde6 = NULL; | |
e2a0a9d6 | 1553 | dma_addr_t physaddr; |
6c8eea54 | 1554 | int i = 0, num_bde = 0, status; |
e2a0a9d6 | 1555 | int datadir = sc->sc_data_direction; |
e2a0a9d6 | 1556 | uint32_t reftag; |
7c56b9fd | 1557 | unsigned blksize; |
6c8eea54 | 1558 | uint8_t txop, rxop; |
e2a0a9d6 | 1559 | |
6c8eea54 JS |
1560 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
1561 | if (status) | |
e2a0a9d6 JS |
1562 | goto out; |
1563 | ||
6c8eea54 | 1564 | /* extract some info from the scsi command for pde*/ |
e2a0a9d6 | 1565 | blksize = lpfc_cmd_blksize(sc); |
7c56b9fd | 1566 | reftag = scsi_get_lba(sc) & 0xffffffff; |
e2a0a9d6 | 1567 | |
f9bb2da1 JS |
1568 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1569 | /* reftag is the only error we can inject here */ | |
1570 | lpfc_bg_err_inject(phba, sc, &reftag, 0, 0); | |
1571 | #endif | |
1572 | ||
6c8eea54 JS |
1573 | /* setup PDE5 with what we have */ |
1574 | pde5 = (struct lpfc_pde5 *) bpl; | |
1575 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
1576 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
6c8eea54 | 1577 | |
bc73905a | 1578 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 | 1579 | pde5->word0 = cpu_to_le32(pde5->word0); |
7c56b9fd | 1580 | pde5->reftag = cpu_to_le32(reftag); |
589a52d6 | 1581 | |
6c8eea54 JS |
1582 | /* advance bpl and increment bde count */ |
1583 | num_bde++; | |
1584 | bpl++; | |
1585 | pde6 = (struct lpfc_pde6 *) bpl; | |
1586 | ||
1587 | /* setup PDE6 with the rest of the info */ | |
1588 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
1589 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
1590 | bf_set(pde6_optx, pde6, txop); | |
1591 | bf_set(pde6_oprx, pde6, rxop); | |
1592 | if (datadir == DMA_FROM_DEVICE) { | |
1593 | bf_set(pde6_ce, pde6, 1); | |
1594 | bf_set(pde6_re, pde6, 1); | |
6c8eea54 JS |
1595 | } |
1596 | bf_set(pde6_ai, pde6, 1); | |
7c56b9fd JS |
1597 | bf_set(pde6_ae, pde6, 0); |
1598 | bf_set(pde6_apptagval, pde6, 0); | |
e2a0a9d6 | 1599 | |
bc73905a | 1600 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
1601 | pde6->word0 = cpu_to_le32(pde6->word0); |
1602 | pde6->word1 = cpu_to_le32(pde6->word1); | |
1603 | pde6->word2 = cpu_to_le32(pde6->word2); | |
1604 | ||
6c8eea54 | 1605 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
1606 | num_bde++; |
1607 | bpl++; | |
1608 | ||
1609 | /* assumption: caller has already run dma_map_sg on command data */ | |
1610 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
1611 | physaddr = sg_dma_address(sgde); | |
1612 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
1613 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
1614 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
1615 | if (datadir == DMA_TO_DEVICE) | |
1616 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1617 | else | |
1618 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1619 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1620 | bpl++; | |
1621 | num_bde++; | |
1622 | } | |
1623 | ||
1624 | out: | |
1625 | return num_bde; | |
1626 | } | |
1627 | ||
1628 | /* | |
1629 | * This function sets up buffer list for protection groups of | |
1630 | * type LPFC_PG_TYPE_DIF_BUF | |
1631 | * | |
1632 | * This is usually used when DIFs are in their own buffers, | |
1633 | * separate from the data. The HBA can then by instructed | |
1634 | * to place the DIFs in the outgoing stream. For read operations, | |
1635 | * The HBA could extract the DIFs and place it in DIF buffers. | |
1636 | * | |
1637 | * The buffer list for this type consists of one or more of the | |
1638 | * protection groups described below: | |
1639 | * +-------------------------+ | |
6c8eea54 | 1640 | * start of first prot group --> | PDE_5 | |
e2a0a9d6 | 1641 | * +-------------------------+ |
6c8eea54 JS |
1642 | * | PDE_6 | |
1643 | * +-------------------------+ | |
1644 | * | PDE_7 (Prot BDE) | | |
e2a0a9d6 JS |
1645 | * +-------------------------+ |
1646 | * | Data BDE | | |
1647 | * +-------------------------+ | |
1648 | * |more Data BDE's ... (opt)| | |
1649 | * +-------------------------+ | |
6c8eea54 | 1650 | * start of new prot group --> | PDE_5 | |
e2a0a9d6 JS |
1651 | * +-------------------------+ |
1652 | * | ... | | |
1653 | * +-------------------------+ | |
1654 | * | |
1655 | * @sc: pointer to scsi command we're working on | |
1656 | * @bpl: pointer to buffer list for protection groups | |
1657 | * @datacnt: number of segments of data that have been dma mapped | |
1658 | * @protcnt: number of segment of protection data that have been dma mapped | |
1659 | * | |
1660 | * Note: It is assumed that both data and protection s/g buffers have been | |
1661 | * mapped for DMA | |
1662 | */ | |
1663 | static int | |
1664 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1665 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
1666 | { | |
1667 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
1668 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
6c8eea54 JS |
1669 | struct lpfc_pde5 *pde5 = NULL; |
1670 | struct lpfc_pde6 *pde6 = NULL; | |
7f86059a | 1671 | struct lpfc_pde7 *pde7 = NULL; |
e2a0a9d6 JS |
1672 | dma_addr_t dataphysaddr, protphysaddr; |
1673 | unsigned short curr_data = 0, curr_prot = 0; | |
7f86059a JS |
1674 | unsigned int split_offset; |
1675 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
e2a0a9d6 JS |
1676 | unsigned int protgrp_blks, protgrp_bytes; |
1677 | unsigned int remainder, subtotal; | |
6c8eea54 | 1678 | int status; |
e2a0a9d6 JS |
1679 | int datadir = sc->sc_data_direction; |
1680 | unsigned char pgdone = 0, alldone = 0; | |
1681 | unsigned blksize; | |
1682 | uint32_t reftag; | |
6c8eea54 | 1683 | uint8_t txop, rxop; |
e2a0a9d6 JS |
1684 | int num_bde = 0; |
1685 | ||
1686 | sgpe = scsi_prot_sglist(sc); | |
1687 | sgde = scsi_sglist(sc); | |
1688 | ||
1689 | if (!sgpe || !sgde) { | |
1690 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1691 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
1692 | sgpe, sgde); | |
1693 | return 0; | |
1694 | } | |
1695 | ||
6c8eea54 JS |
1696 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
1697 | if (status) | |
e2a0a9d6 JS |
1698 | goto out; |
1699 | ||
6c8eea54 | 1700 | /* extract some info from the scsi command */ |
e2a0a9d6 | 1701 | blksize = lpfc_cmd_blksize(sc); |
7c56b9fd | 1702 | reftag = scsi_get_lba(sc) & 0xffffffff; |
e2a0a9d6 | 1703 | |
f9bb2da1 JS |
1704 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1705 | /* reftag / guard tag are the only errors we can inject here */ | |
1706 | lpfc_bg_err_inject(phba, sc, &reftag, 0, 0xDEAD); | |
1707 | #endif | |
1708 | ||
e2a0a9d6 JS |
1709 | split_offset = 0; |
1710 | do { | |
6c8eea54 JS |
1711 | /* setup PDE5 with what we have */ |
1712 | pde5 = (struct lpfc_pde5 *) bpl; | |
1713 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
1714 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
e2a0a9d6 | 1715 | |
bc73905a | 1716 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 | 1717 | pde5->word0 = cpu_to_le32(pde5->word0); |
7c56b9fd | 1718 | pde5->reftag = cpu_to_le32(reftag); |
589a52d6 | 1719 | |
6c8eea54 JS |
1720 | /* advance bpl and increment bde count */ |
1721 | num_bde++; | |
1722 | bpl++; | |
1723 | pde6 = (struct lpfc_pde6 *) bpl; | |
1724 | ||
1725 | /* setup PDE6 with the rest of the info */ | |
1726 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
1727 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
1728 | bf_set(pde6_optx, pde6, txop); | |
1729 | bf_set(pde6_oprx, pde6, rxop); | |
1730 | bf_set(pde6_ce, pde6, 1); | |
1731 | bf_set(pde6_re, pde6, 1); | |
6c8eea54 | 1732 | bf_set(pde6_ai, pde6, 1); |
7c56b9fd JS |
1733 | bf_set(pde6_ae, pde6, 0); |
1734 | bf_set(pde6_apptagval, pde6, 0); | |
6c8eea54 | 1735 | |
bc73905a | 1736 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
1737 | pde6->word0 = cpu_to_le32(pde6->word0); |
1738 | pde6->word1 = cpu_to_le32(pde6->word1); | |
1739 | pde6->word2 = cpu_to_le32(pde6->word2); | |
1740 | ||
6c8eea54 | 1741 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
1742 | num_bde++; |
1743 | bpl++; | |
1744 | ||
1745 | /* setup the first BDE that points to protection buffer */ | |
7f86059a JS |
1746 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; |
1747 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
e2a0a9d6 | 1748 | |
e2a0a9d6 JS |
1749 | /* must be integer multiple of the DIF block length */ |
1750 | BUG_ON(protgroup_len % 8); | |
1751 | ||
7f86059a JS |
1752 | pde7 = (struct lpfc_pde7 *) bpl; |
1753 | memset(pde7, 0, sizeof(struct lpfc_pde7)); | |
1754 | bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); | |
1755 | ||
7c56b9fd JS |
1756 | pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); |
1757 | pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
7f86059a | 1758 | |
e2a0a9d6 JS |
1759 | protgrp_blks = protgroup_len / 8; |
1760 | protgrp_bytes = protgrp_blks * blksize; | |
1761 | ||
7f86059a JS |
1762 | /* check if this pde is crossing the 4K boundary; if so split */ |
1763 | if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { | |
1764 | protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); | |
1765 | protgroup_offset += protgroup_remainder; | |
1766 | protgrp_blks = protgroup_remainder / 8; | |
7c56b9fd | 1767 | protgrp_bytes = protgrp_blks * blksize; |
7f86059a JS |
1768 | } else { |
1769 | protgroup_offset = 0; | |
1770 | curr_prot++; | |
1771 | } | |
e2a0a9d6 | 1772 | |
e2a0a9d6 JS |
1773 | num_bde++; |
1774 | ||
1775 | /* setup BDE's for data blocks associated with DIF data */ | |
1776 | pgdone = 0; | |
1777 | subtotal = 0; /* total bytes processed for current prot grp */ | |
1778 | while (!pgdone) { | |
1779 | if (!sgde) { | |
6a9c52cf JS |
1780 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1781 | "9065 BLKGRD:%s Invalid data segment\n", | |
e2a0a9d6 JS |
1782 | __func__); |
1783 | return 0; | |
1784 | } | |
1785 | bpl++; | |
1786 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
1787 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
1788 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
1789 | ||
1790 | remainder = sg_dma_len(sgde) - split_offset; | |
1791 | ||
1792 | if ((subtotal + remainder) <= protgrp_bytes) { | |
1793 | /* we can use this whole buffer */ | |
1794 | bpl->tus.f.bdeSize = remainder; | |
1795 | split_offset = 0; | |
1796 | ||
1797 | if ((subtotal + remainder) == protgrp_bytes) | |
1798 | pgdone = 1; | |
1799 | } else { | |
1800 | /* must split this buffer with next prot grp */ | |
1801 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
1802 | split_offset += bpl->tus.f.bdeSize; | |
1803 | } | |
1804 | ||
1805 | subtotal += bpl->tus.f.bdeSize; | |
1806 | ||
1807 | if (datadir == DMA_TO_DEVICE) | |
1808 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1809 | else | |
1810 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1811 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1812 | ||
1813 | num_bde++; | |
1814 | curr_data++; | |
1815 | ||
1816 | if (split_offset) | |
1817 | break; | |
1818 | ||
1819 | /* Move to the next s/g segment if possible */ | |
1820 | sgde = sg_next(sgde); | |
6c8eea54 | 1821 | |
e2a0a9d6 JS |
1822 | } |
1823 | ||
7f86059a JS |
1824 | if (protgroup_offset) { |
1825 | /* update the reference tag */ | |
1826 | reftag += protgrp_blks; | |
1827 | bpl++; | |
1828 | continue; | |
1829 | } | |
1830 | ||
e2a0a9d6 JS |
1831 | /* are we done ? */ |
1832 | if (curr_prot == protcnt) { | |
1833 | alldone = 1; | |
1834 | } else if (curr_prot < protcnt) { | |
1835 | /* advance to next prot buffer */ | |
1836 | sgpe = sg_next(sgpe); | |
1837 | bpl++; | |
1838 | ||
1839 | /* update the reference tag */ | |
1840 | reftag += protgrp_blks; | |
1841 | } else { | |
1842 | /* if we're here, we have a bug */ | |
6a9c52cf JS |
1843 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1844 | "9054 BLKGRD: bug in %s\n", __func__); | |
e2a0a9d6 JS |
1845 | } |
1846 | ||
1847 | } while (!alldone); | |
e2a0a9d6 JS |
1848 | out: |
1849 | ||
e2a0a9d6 JS |
1850 | return num_bde; |
1851 | } | |
7f86059a | 1852 | |
e2a0a9d6 JS |
1853 | /* |
1854 | * Given a SCSI command that supports DIF, determine composition of protection | |
1855 | * groups involved in setting up buffer lists | |
1856 | * | |
1857 | * Returns: | |
1858 | * for DIF (for both read and write) | |
1859 | * */ | |
1860 | static int | |
1861 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
1862 | { | |
1863 | int ret = LPFC_PG_TYPE_INVALID; | |
1864 | unsigned char op = scsi_get_prot_op(sc); | |
1865 | ||
1866 | switch (op) { | |
1867 | case SCSI_PROT_READ_STRIP: | |
1868 | case SCSI_PROT_WRITE_INSERT: | |
1869 | ret = LPFC_PG_TYPE_NO_DIF; | |
1870 | break; | |
1871 | case SCSI_PROT_READ_INSERT: | |
1872 | case SCSI_PROT_WRITE_STRIP: | |
1873 | case SCSI_PROT_READ_PASS: | |
1874 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
1875 | ret = LPFC_PG_TYPE_DIF_BUF; |
1876 | break; | |
1877 | default: | |
1878 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1879 | "9021 Unsupported protection op:%d\n", op); | |
1880 | break; | |
1881 | } | |
1882 | ||
1883 | return ret; | |
1884 | } | |
1885 | ||
1886 | /* | |
1887 | * This is the protection/DIF aware version of | |
1888 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
1889 | * two functions eventually, but for now, it's here | |
1890 | */ | |
1891 | static int | |
1892 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, | |
1893 | struct lpfc_scsi_buf *lpfc_cmd) | |
1894 | { | |
1895 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1896 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1897 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
1898 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1899 | uint32_t num_bde = 0; | |
1900 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
1901 | int prot_group_type = 0; | |
1902 | int diflen, fcpdl; | |
1903 | unsigned blksize; | |
1904 | ||
1905 | /* | |
1906 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
1907 | * fcp_rsp regions to the first data bde entry | |
1908 | */ | |
1909 | bpl += 2; | |
1910 | if (scsi_sg_count(scsi_cmnd)) { | |
1911 | /* | |
1912 | * The driver stores the segment count returned from pci_map_sg | |
1913 | * because this a count of dma-mappings used to map the use_sg | |
1914 | * pages. They are not guaranteed to be the same for those | |
1915 | * architectures that implement an IOMMU. | |
1916 | */ | |
1917 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
1918 | scsi_sglist(scsi_cmnd), | |
1919 | scsi_sg_count(scsi_cmnd), datadir); | |
1920 | if (unlikely(!datasegcnt)) | |
1921 | return 1; | |
1922 | ||
1923 | lpfc_cmd->seg_cnt = datasegcnt; | |
1924 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
1925 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1926 | "9067 BLKGRD: %s: Too many sg segments" | |
1927 | " from dma_map_sg. Config %d, seg_cnt" | |
1928 | " %d\n", | |
e2a0a9d6 JS |
1929 | __func__, phba->cfg_sg_seg_cnt, |
1930 | lpfc_cmd->seg_cnt); | |
1931 | scsi_dma_unmap(scsi_cmnd); | |
1932 | return 1; | |
1933 | } | |
1934 | ||
1935 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
1936 | ||
1937 | switch (prot_group_type) { | |
1938 | case LPFC_PG_TYPE_NO_DIF: | |
1939 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, | |
1940 | datasegcnt); | |
c9404c9c | 1941 | /* we should have 2 or more entries in buffer list */ |
e2a0a9d6 JS |
1942 | if (num_bde < 2) |
1943 | goto err; | |
1944 | break; | |
1945 | case LPFC_PG_TYPE_DIF_BUF:{ | |
1946 | /* | |
1947 | * This type indicates that protection buffers are | |
1948 | * passed to the driver, so that needs to be prepared | |
1949 | * for DMA | |
1950 | */ | |
1951 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
1952 | scsi_prot_sglist(scsi_cmnd), | |
1953 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
1954 | if (unlikely(!protsegcnt)) { | |
1955 | scsi_dma_unmap(scsi_cmnd); | |
1956 | return 1; | |
1957 | } | |
1958 | ||
1959 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
1960 | if (lpfc_cmd->prot_seg_cnt | |
1961 | > phba->cfg_prot_sg_seg_cnt) { | |
6a9c52cf JS |
1962 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1963 | "9068 BLKGRD: %s: Too many prot sg " | |
1964 | "segments from dma_map_sg. Config %d," | |
e2a0a9d6 JS |
1965 | "prot_seg_cnt %d\n", __func__, |
1966 | phba->cfg_prot_sg_seg_cnt, | |
1967 | lpfc_cmd->prot_seg_cnt); | |
1968 | dma_unmap_sg(&phba->pcidev->dev, | |
1969 | scsi_prot_sglist(scsi_cmnd), | |
1970 | scsi_prot_sg_count(scsi_cmnd), | |
1971 | datadir); | |
1972 | scsi_dma_unmap(scsi_cmnd); | |
1973 | return 1; | |
1974 | } | |
1975 | ||
1976 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
1977 | datasegcnt, protsegcnt); | |
c9404c9c | 1978 | /* we should have 3 or more entries in buffer list */ |
e2a0a9d6 JS |
1979 | if (num_bde < 3) |
1980 | goto err; | |
1981 | break; | |
1982 | } | |
1983 | case LPFC_PG_TYPE_INVALID: | |
1984 | default: | |
1985 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1986 | "9022 Unexpected protection group %i\n", | |
1987 | prot_group_type); | |
1988 | return 1; | |
1989 | } | |
1990 | } | |
1991 | ||
1992 | /* | |
1993 | * Finish initializing those IOCB fields that are dependent on the | |
1994 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
1995 | * reinitialized since all iocb memory resources are used many times | |
1996 | * for transmit, receive, and continuation bpl's. | |
1997 | */ | |
1998 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
1999 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
2000 | iocb_cmd->ulpBdeCount = 1; | |
2001 | iocb_cmd->ulpLe = 1; | |
2002 | ||
2003 | fcpdl = scsi_bufflen(scsi_cmnd); | |
2004 | ||
2005 | if (scsi_get_prot_type(scsi_cmnd) == SCSI_PROT_DIF_TYPE1) { | |
2006 | /* | |
2007 | * We are in DIF Type 1 mode | |
2008 | * Every data block has a 8 byte DIF (trailer) | |
2009 | * attached to it. Must ajust FCP data length | |
2010 | */ | |
2011 | blksize = lpfc_cmd_blksize(scsi_cmnd); | |
2012 | diflen = (fcpdl / blksize) * 8; | |
2013 | fcpdl += diflen; | |
2014 | } | |
2015 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); | |
2016 | ||
2017 | /* | |
2018 | * Due to difference in data length between DIF/non-DIF paths, | |
2019 | * we need to set word 4 of IOCB here | |
2020 | */ | |
2021 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
2022 | ||
dea3101e | 2023 | return 0; |
e2a0a9d6 JS |
2024 | err: |
2025 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2026 | "9023 Could not setup all needed BDE's" | |
2027 | "prot_group_type=%d, num_bde=%d\n", | |
2028 | prot_group_type, num_bde); | |
2029 | return 1; | |
2030 | } | |
2031 | ||
2032 | /* | |
2033 | * This function checks for BlockGuard errors detected by | |
2034 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
2035 | * sense buffer will be set accordingly, paired with | |
2036 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
2037 | * detected corruption. | |
2038 | * | |
2039 | * Returns: | |
2040 | * 0 - No error found | |
2041 | * 1 - BlockGuard error found | |
2042 | * -1 - Internal error (bad profile, ...etc) | |
2043 | */ | |
2044 | static int | |
2045 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
2046 | struct lpfc_iocbq *pIocbOut) | |
2047 | { | |
2048 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
2049 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
2050 | int ret = 0; | |
2051 | uint32_t bghm = bgf->bghm; | |
2052 | uint32_t bgstat = bgf->bgstat; | |
2053 | uint64_t failing_sector = 0; | |
2054 | ||
6a9c52cf JS |
2055 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9069 BLKGRD: BG ERROR in cmd" |
2056 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
e2a0a9d6 | 2057 | "bgstat=0x%x bghm=0x%x\n", |
87b5c328 | 2058 | cmd->cmnd[0], (unsigned long long)scsi_get_lba(cmd), |
83096ebf | 2059 | blk_rq_sectors(cmd->request), bgstat, bghm); |
e2a0a9d6 JS |
2060 | |
2061 | spin_lock(&_dump_buf_lock); | |
2062 | if (!_dump_buf_done) { | |
6a9c52cf JS |
2063 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
2064 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 2065 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 2066 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
2067 | |
2068 | /* If we have a prot sgl, save the DIF buffer */ | |
2069 | if (lpfc_prot_group_type(phba, cmd) == | |
2070 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
2071 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
2072 | "Saving DIF for %u blocks to debugfs\n", | |
2073 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
2074 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
2075 | } |
2076 | ||
2077 | _dump_buf_done = 1; | |
2078 | } | |
2079 | spin_unlock(&_dump_buf_lock); | |
2080 | ||
2081 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
2082 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
2083 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9072 BLKGRD: Invalid" |
2084 | " BlockGuard profile. bgstat:0x%x\n", | |
2085 | bgstat); | |
e2a0a9d6 JS |
2086 | ret = (-1); |
2087 | goto out; | |
2088 | } | |
2089 | ||
2090 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
2091 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
2092 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9073 BLKGRD: " |
2093 | "Invalid BlockGuard DIF Block. bgstat:0x%x\n", | |
e2a0a9d6 JS |
2094 | bgstat); |
2095 | ret = (-1); | |
2096 | goto out; | |
2097 | } | |
2098 | ||
2099 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
2100 | ret = 1; | |
2101 | ||
2102 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
2103 | 0x10, 0x1); | |
1c9fbafc | 2104 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
2105 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
2106 | phba->bg_guard_err_cnt++; | |
6a9c52cf JS |
2107 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2108 | "9055 BLKGRD: guard_tag error\n"); | |
e2a0a9d6 JS |
2109 | } |
2110 | ||
2111 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
2112 | ret = 1; | |
2113 | ||
2114 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
2115 | 0x10, 0x3); | |
1c9fbafc | 2116 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
2117 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
2118 | ||
2119 | phba->bg_reftag_err_cnt++; | |
6a9c52cf JS |
2120 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2121 | "9056 BLKGRD: ref_tag error\n"); | |
e2a0a9d6 JS |
2122 | } |
2123 | ||
2124 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
2125 | ret = 1; | |
2126 | ||
2127 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
2128 | 0x10, 0x2); | |
1c9fbafc | 2129 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
2130 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
2131 | ||
2132 | phba->bg_apptag_err_cnt++; | |
6a9c52cf JS |
2133 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2134 | "9061 BLKGRD: app_tag error\n"); | |
e2a0a9d6 JS |
2135 | } |
2136 | ||
2137 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
2138 | /* | |
2139 | * setup sense data descriptor 0 per SPC-4 as an information | |
7c56b9fd JS |
2140 | * field, and put the failing LBA in it. |
2141 | * This code assumes there was also a guard/app/ref tag error | |
2142 | * indication. | |
e2a0a9d6 | 2143 | */ |
7c56b9fd JS |
2144 | cmd->sense_buffer[7] = 0xc; /* Additional sense length */ |
2145 | cmd->sense_buffer[8] = 0; /* Information descriptor type */ | |
2146 | cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ | |
2147 | cmd->sense_buffer[10] = 0x80; /* Validity bit */ | |
2344b5b6 | 2148 | bghm /= cmd->device->sector_size; |
e2a0a9d6 JS |
2149 | |
2150 | failing_sector = scsi_get_lba(cmd); | |
2151 | failing_sector += bghm; | |
2152 | ||
7c56b9fd JS |
2153 | /* Descriptor Information */ |
2154 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); | |
e2a0a9d6 JS |
2155 | } |
2156 | ||
2157 | if (!ret) { | |
2158 | /* No error was reported - problem in FW? */ | |
2159 | cmd->result = ScsiResult(DID_ERROR, 0); | |
6a9c52cf JS |
2160 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
2161 | "9057 BLKGRD: no errors reported!\n"); | |
e2a0a9d6 JS |
2162 | } |
2163 | ||
2164 | out: | |
2165 | return ret; | |
dea3101e JB |
2166 | } |
2167 | ||
da0436e9 JS |
2168 | /** |
2169 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
2170 | * @phba: The Hba for which this call is being executed. | |
2171 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
2172 | * | |
2173 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
2174 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
2175 | * | |
2176 | * Return codes: | |
6c8eea54 JS |
2177 | * 1 - Error |
2178 | * 0 - Success | |
da0436e9 JS |
2179 | **/ |
2180 | static int | |
2181 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
2182 | { | |
2183 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
2184 | struct scatterlist *sgel = NULL; | |
2185 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2186 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
fedd3b7b | 2187 | struct sli4_sge *first_data_sgl; |
da0436e9 JS |
2188 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
2189 | dma_addr_t physaddr; | |
2190 | uint32_t num_bde = 0; | |
2191 | uint32_t dma_len; | |
2192 | uint32_t dma_offset = 0; | |
2193 | int nseg; | |
fedd3b7b | 2194 | struct ulp_bde64 *bde; |
da0436e9 JS |
2195 | |
2196 | /* | |
2197 | * There are three possibilities here - use scatter-gather segment, use | |
2198 | * the single mapping, or neither. Start the lpfc command prep by | |
2199 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2200 | * data bde entry. | |
2201 | */ | |
2202 | if (scsi_sg_count(scsi_cmnd)) { | |
2203 | /* | |
2204 | * The driver stores the segment count returned from pci_map_sg | |
2205 | * because this a count of dma-mappings used to map the use_sg | |
2206 | * pages. They are not guaranteed to be the same for those | |
2207 | * architectures that implement an IOMMU. | |
2208 | */ | |
2209 | ||
2210 | nseg = scsi_dma_map(scsi_cmnd); | |
2211 | if (unlikely(!nseg)) | |
2212 | return 1; | |
2213 | sgl += 1; | |
2214 | /* clear the last flag in the fcp_rsp map entry */ | |
2215 | sgl->word2 = le32_to_cpu(sgl->word2); | |
2216 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2217 | sgl->word2 = cpu_to_le32(sgl->word2); | |
2218 | sgl += 1; | |
fedd3b7b | 2219 | first_data_sgl = sgl; |
da0436e9 JS |
2220 | lpfc_cmd->seg_cnt = nseg; |
2221 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
2222 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
2223 | " %s: Too many sg segments from " | |
2224 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
2225 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 JS |
2226 | lpfc_cmd->seg_cnt); |
2227 | scsi_dma_unmap(scsi_cmnd); | |
2228 | return 1; | |
2229 | } | |
2230 | ||
2231 | /* | |
2232 | * The driver established a maximum scatter-gather segment count | |
2233 | * during probe that limits the number of sg elements in any | |
2234 | * single scsi command. Just run through the seg_cnt and format | |
2235 | * the sge's. | |
2236 | * When using SLI-3 the driver will try to fit all the BDEs into | |
2237 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
2238 | * does for SLI-2 mode. | |
2239 | */ | |
2240 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
2241 | physaddr = sg_dma_address(sgel); | |
2242 | dma_len = sg_dma_len(sgel); | |
da0436e9 JS |
2243 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); |
2244 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
0558056c | 2245 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
2246 | if ((num_bde + 1) == nseg) |
2247 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
2248 | else | |
2249 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2250 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
f9bb2da1 | 2251 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); |
da0436e9 | 2252 | sgl->word2 = cpu_to_le32(sgl->word2); |
28baac74 | 2253 | sgl->sge_len = cpu_to_le32(dma_len); |
da0436e9 JS |
2254 | dma_offset += dma_len; |
2255 | sgl++; | |
2256 | } | |
fedd3b7b JS |
2257 | /* setup the performance hint (first data BDE) if enabled */ |
2258 | if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) { | |
2259 | bde = (struct ulp_bde64 *) | |
2260 | &(iocb_cmd->unsli3.sli3Words[5]); | |
2261 | bde->addrLow = first_data_sgl->addr_lo; | |
2262 | bde->addrHigh = first_data_sgl->addr_hi; | |
2263 | bde->tus.f.bdeSize = | |
2264 | le32_to_cpu(first_data_sgl->sge_len); | |
2265 | bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
2266 | bde->tus.w = cpu_to_le32(bde->tus.w); | |
2267 | } | |
da0436e9 JS |
2268 | } else { |
2269 | sgl += 1; | |
2270 | /* clear the last flag in the fcp_rsp map entry */ | |
2271 | sgl->word2 = le32_to_cpu(sgl->word2); | |
2272 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
2273 | sgl->word2 = cpu_to_le32(sgl->word2); | |
2274 | } | |
2275 | ||
2276 | /* | |
2277 | * Finish initializing those IOCB fields that are dependent on the | |
2278 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
2279 | * explicitly reinitialized. | |
2280 | * all iocb memory resources are reused. | |
2281 | */ | |
2282 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
2283 | ||
2284 | /* | |
2285 | * Due to difference in data length between DIF/non-DIF paths, | |
2286 | * we need to set word 4 of IOCB here | |
2287 | */ | |
2288 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
2289 | return 0; | |
2290 | } | |
2291 | ||
3772a991 JS |
2292 | /** |
2293 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
2294 | * @phba: The Hba for which this call is being executed. | |
2295 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
2296 | * | |
2297 | * This routine wraps the actual DMA mapping function pointer from the | |
2298 | * lpfc_hba struct. | |
2299 | * | |
2300 | * Return codes: | |
6c8eea54 JS |
2301 | * 1 - Error |
2302 | * 0 - Success | |
3772a991 JS |
2303 | **/ |
2304 | static inline int | |
2305 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
2306 | { | |
2307 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
2308 | } | |
2309 | ||
ea2151b4 | 2310 | /** |
3621a710 | 2311 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
2312 | * @phba: Pointer to hba context object. |
2313 | * @vport: Pointer to vport object. | |
2314 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
2315 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
2316 | * | |
2317 | * This function posts an event when there is a SCSI command reporting | |
2318 | * error from the scsi device. | |
2319 | **/ | |
2320 | static void | |
2321 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
2322 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
2323 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
2324 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
2325 | uint32_t resp_info = fcprsp->rspStatus2; | |
2326 | uint32_t scsi_status = fcprsp->rspStatus3; | |
2327 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
2328 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
2329 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
2330 | unsigned long flags; | |
2331 | ||
5989b8d4 JS |
2332 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
2333 | return; | |
2334 | ||
ea2151b4 JS |
2335 | /* If there is queuefull or busy condition send a scsi event */ |
2336 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
2337 | (cmnd->result == SAM_STAT_BUSY)) { | |
2338 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
2339 | if (!fast_path_evt) | |
2340 | return; | |
2341 | fast_path_evt->un.scsi_evt.event_type = | |
2342 | FC_REG_SCSI_EVENT; | |
2343 | fast_path_evt->un.scsi_evt.subcategory = | |
2344 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
2345 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
2346 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
2347 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
2348 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2349 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
2350 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2351 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
2352 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
2353 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
2354 | if (!fast_path_evt) | |
2355 | return; | |
2356 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
2357 | FC_REG_SCSI_EVENT; | |
2358 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
2359 | LPFC_EVENT_CHECK_COND; | |
2360 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
2361 | cmnd->device->lun; | |
2362 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
2363 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2364 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
2365 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2366 | fast_path_evt->un.check_cond_evt.sense_key = | |
2367 | cmnd->sense_buffer[2] & 0xf; | |
2368 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
2369 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
2370 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
2371 | fcpi_parm && | |
2372 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
2373 | ((scsi_status == SAM_STAT_GOOD) && | |
2374 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
2375 | /* | |
2376 | * If status is good or resid does not match with fcp_param and | |
2377 | * there is valid fcpi_parm, then there is a read_check error | |
2378 | */ | |
2379 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
2380 | if (!fast_path_evt) | |
2381 | return; | |
2382 | fast_path_evt->un.read_check_error.header.event_type = | |
2383 | FC_REG_FABRIC_EVENT; | |
2384 | fast_path_evt->un.read_check_error.header.subcategory = | |
2385 | LPFC_EVENT_FCPRDCHKERR; | |
2386 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
2387 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
2388 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
2389 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
2390 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
2391 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
2392 | fast_path_evt->un.read_check_error.fcpiparam = | |
2393 | fcpi_parm; | |
2394 | } else | |
2395 | return; | |
2396 | ||
2397 | fast_path_evt->vport = vport; | |
2398 | spin_lock_irqsave(&phba->hbalock, flags); | |
2399 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
2400 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2401 | lpfc_worker_wake_up(phba); | |
2402 | return; | |
2403 | } | |
9bad7671 JS |
2404 | |
2405 | /** | |
f1126688 | 2406 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 2407 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
2408 | * @psb: The scsi buffer which is going to be un-mapped. |
2409 | * | |
2410 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 2411 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 2412 | **/ |
bcf4dbfa | 2413 | static void |
f1126688 | 2414 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
2415 | { |
2416 | /* | |
2417 | * There are only two special cases to consider. (1) the scsi command | |
2418 | * requested scatter-gather usage or (2) the scsi command allocated | |
2419 | * a request buffer, but did not request use_sg. There is a third | |
2420 | * case, but it does not require resource deallocation. | |
2421 | */ | |
a0b4f78f FT |
2422 | if (psb->seg_cnt > 0) |
2423 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
2424 | if (psb->prot_seg_cnt > 0) |
2425 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
2426 | scsi_prot_sg_count(psb->pCmd), | |
2427 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
2428 | } |
2429 | ||
9bad7671 | 2430 | /** |
3621a710 | 2431 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
2432 | * @vport: The virtual port for which this call is being executed. |
2433 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2434 | * @rsp_iocb: The response IOCB which contains FCP error. | |
2435 | * | |
2436 | * This routine is called to process response IOCB with status field | |
2437 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
2438 | * based upon SCSI and FCP error. | |
2439 | **/ | |
dea3101e | 2440 | static void |
2e0fef85 JS |
2441 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2442 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e JB |
2443 | { |
2444 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
2445 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
2446 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 2447 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e JB |
2448 | uint32_t resp_info = fcprsp->rspStatus2; |
2449 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 2450 | uint32_t *lp; |
dea3101e JB |
2451 | uint32_t host_status = DID_OK; |
2452 | uint32_t rsplen = 0; | |
c7743956 | 2453 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 2454 | |
ea2151b4 | 2455 | |
dea3101e JB |
2456 | /* |
2457 | * If this is a task management command, there is no | |
2458 | * scsi packet associated with this lpfc_cmd. The driver | |
2459 | * consumes it. | |
2460 | */ | |
2461 | if (fcpcmd->fcpCntl2) { | |
2462 | scsi_status = 0; | |
2463 | goto out; | |
2464 | } | |
2465 | ||
6a9c52cf JS |
2466 | if (resp_info & RSP_LEN_VALID) { |
2467 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
e40a02c1 | 2468 | if (rsplen != 0 && rsplen != 4 && rsplen != 8) { |
6a9c52cf JS |
2469 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2470 | "2719 Invalid response length: " | |
2471 | "tgt x%x lun x%x cmnd x%x rsplen x%x\n", | |
2472 | cmnd->device->id, | |
2473 | cmnd->device->lun, cmnd->cmnd[0], | |
2474 | rsplen); | |
2475 | host_status = DID_ERROR; | |
2476 | goto out; | |
2477 | } | |
e40a02c1 JS |
2478 | if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { |
2479 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
2480 | "2757 Protocol failure detected during " | |
2481 | "processing of FCP I/O op: " | |
2482 | "tgt x%x lun x%x cmnd x%x rspInfo3 x%x\n", | |
2483 | cmnd->device->id, | |
2484 | cmnd->device->lun, cmnd->cmnd[0], | |
2485 | fcprsp->rspInfo3); | |
2486 | host_status = DID_ERROR; | |
2487 | goto out; | |
2488 | } | |
6a9c52cf JS |
2489 | } |
2490 | ||
c7743956 JS |
2491 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
2492 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
2493 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
2494 | snslen = SCSI_SENSE_BUFFERSIZE; | |
2495 | ||
2496 | if (resp_info & RSP_LEN_VALID) | |
2497 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
2498 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
2499 | } | |
2500 | lp = (uint32_t *)cmnd->sense_buffer; | |
2501 | ||
73d91e50 JS |
2502 | if (!scsi_status && (resp_info & RESID_UNDER) && |
2503 | vport->cfg_log_verbose & LOG_FCP_UNDER) | |
2504 | logit = LOG_FCP_UNDER; | |
c7743956 | 2505 | |
e8b62011 | 2506 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 2507 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
2508 | "Data: x%x x%x x%x x%x x%x\n", |
2509 | cmnd->cmnd[0], scsi_status, | |
2510 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
2511 | be32_to_cpu(fcprsp->rspResId), | |
2512 | be32_to_cpu(fcprsp->rspSnsLen), | |
2513 | be32_to_cpu(fcprsp->rspRspLen), | |
2514 | fcprsp->rspInfo3); | |
dea3101e | 2515 | |
a0b4f78f | 2516 | scsi_set_resid(cmnd, 0); |
dea3101e | 2517 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 2518 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 2519 | |
73d91e50 | 2520 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, |
e2a0a9d6 | 2521 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
2522 | "residual %d Data: x%x x%x x%x\n", |
2523 | be32_to_cpu(fcpcmd->fcpDl), | |
2524 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
2525 | cmnd->underflow); | |
dea3101e | 2526 | |
7054a606 JS |
2527 | /* |
2528 | * If there is an under run check if under run reported by | |
2529 | * storage array is same as the under run reported by HBA. | |
2530 | * If this is not same, there is a dropped frame. | |
2531 | */ | |
2532 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
2533 | fcpi_parm && | |
a0b4f78f | 2534 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
2535 | lpfc_printf_vlog(vport, KERN_WARNING, |
2536 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 2537 | "9026 FCP Read Check Error " |
e8b62011 JS |
2538 | "and Underrun Data: x%x x%x x%x x%x\n", |
2539 | be32_to_cpu(fcpcmd->fcpDl), | |
2540 | scsi_get_resid(cmnd), fcpi_parm, | |
2541 | cmnd->cmnd[0]); | |
a0b4f78f | 2542 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
2543 | host_status = DID_ERROR; |
2544 | } | |
dea3101e JB |
2545 | /* |
2546 | * The cmnd->underflow is the minimum number of bytes that must | |
25985edc | 2547 | * be transferred for this command. Provided a sense condition |
dea3101e JB |
2548 | * is not present, make sure the actual amount transferred is at |
2549 | * least the underflow value or fail. | |
2550 | */ | |
2551 | if (!(resp_info & SNS_LEN_VALID) && | |
2552 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
2553 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
2554 | < cmnd->underflow)) { | |
e8b62011 | 2555 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 2556 | "9027 FCP command x%x residual " |
e8b62011 JS |
2557 | "underrun converted to error " |
2558 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 2559 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 2560 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e JB |
2561 | host_status = DID_ERROR; |
2562 | } | |
2563 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 2564 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 2565 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 2566 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 2567 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e JB |
2568 | host_status = DID_ERROR; |
2569 | ||
2570 | /* | |
2571 | * Check SLI validation that all the transfer was actually done | |
2572 | * (fcpi_parm should be zero). Apply check only to reads. | |
2573 | */ | |
eee8877e | 2574 | } else if (fcpi_parm && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { |
e8b62011 | 2575 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
e2a0a9d6 | 2576 | "9029 FCP Read Check Error Data: " |
eee8877e | 2577 | "x%x x%x x%x x%x x%x\n", |
e8b62011 JS |
2578 | be32_to_cpu(fcpcmd->fcpDl), |
2579 | be32_to_cpu(fcprsp->rspResId), | |
eee8877e JS |
2580 | fcpi_parm, cmnd->cmnd[0], scsi_status); |
2581 | switch (scsi_status) { | |
2582 | case SAM_STAT_GOOD: | |
2583 | case SAM_STAT_CHECK_CONDITION: | |
2584 | /* Fabric dropped a data frame. Fail any successful | |
2585 | * command in which we detected dropped frames. | |
2586 | * A status of good or some check conditions could | |
2587 | * be considered a successful command. | |
2588 | */ | |
2589 | host_status = DID_ERROR; | |
2590 | break; | |
2591 | } | |
a0b4f78f | 2592 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e JB |
2593 | } |
2594 | ||
2595 | out: | |
2596 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 2597 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e JB |
2598 | } |
2599 | ||
9bad7671 | 2600 | /** |
3621a710 | 2601 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
2602 | * @phba: The Hba for which this call is being executed. |
2603 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 2604 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
2605 | * |
2606 | * This routine assigns scsi command result by looking into response IOCB | |
2607 | * status field appropriately. This routine handles QUEUE FULL condition as | |
2608 | * well by ramping down device queue depth. | |
2609 | **/ | |
dea3101e JB |
2610 | static void |
2611 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
2612 | struct lpfc_iocbq *pIocbOut) | |
2613 | { | |
2614 | struct lpfc_scsi_buf *lpfc_cmd = | |
2615 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 2616 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e JB |
2617 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
2618 | struct lpfc_nodelist *pnode = rdata->pnode; | |
75baf696 | 2619 | struct scsi_cmnd *cmd; |
445cf4f4 | 2620 | int result; |
a257bf90 | 2621 | struct scsi_device *tmp_sdev; |
5ffc266e | 2622 | int depth; |
fa61a54e | 2623 | unsigned long flags; |
ea2151b4 | 2624 | struct lpfc_fast_path_event *fast_path_evt; |
75baf696 | 2625 | struct Scsi_Host *shost; |
a257bf90 | 2626 | uint32_t queue_depth, scsi_id; |
73d91e50 | 2627 | uint32_t logit = LOG_FCP; |
dea3101e | 2628 | |
75baf696 JS |
2629 | /* Sanity check on return of outstanding command */ |
2630 | if (!(lpfc_cmd->pCmd)) | |
2631 | return; | |
2632 | cmd = lpfc_cmd->pCmd; | |
2633 | shost = cmd->device->host; | |
2634 | ||
dea3101e JB |
2635 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; |
2636 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
341af102 JS |
2637 | /* pick up SLI4 exhange busy status from HBA */ |
2638 | lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; | |
2639 | ||
109f6ed0 JS |
2640 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
2641 | atomic_dec(&pnode->cmd_pending); | |
dea3101e JB |
2642 | |
2643 | if (lpfc_cmd->status) { | |
2644 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
2645 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
2646 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
2647 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
2648 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
73d91e50 JS |
2649 | if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR |
2650 | && !lpfc_cmd->fcp_rsp->rspStatus3 | |
2651 | && (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) | |
2652 | && !(phba->cfg_log_verbose & LOG_FCP_UNDER)) | |
2653 | logit = 0; | |
2654 | else | |
2655 | logit = LOG_FCP | LOG_FCP_UNDER; | |
2656 | lpfc_printf_vlog(vport, KERN_WARNING, logit, | |
2657 | "9030 FCP cmd x%x failed <%d/%d> " | |
2658 | "status: x%x result: x%x Data: x%x x%x\n", | |
2659 | cmd->cmnd[0], | |
2660 | cmd->device ? cmd->device->id : 0xffff, | |
2661 | cmd->device ? cmd->device->lun : 0xffff, | |
2662 | lpfc_cmd->status, lpfc_cmd->result, | |
2663 | pIocbOut->iocb.ulpContext, | |
2664 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e JB |
2665 | |
2666 | switch (lpfc_cmd->status) { | |
2667 | case IOSTAT_FCP_RSP_ERROR: | |
2668 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 2669 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e JB |
2670 | break; |
2671 | case IOSTAT_NPORT_BSY: | |
2672 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 2673 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
2674 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
2675 | if (!fast_path_evt) | |
2676 | break; | |
2677 | fast_path_evt->un.fabric_evt.event_type = | |
2678 | FC_REG_FABRIC_EVENT; | |
2679 | fast_path_evt->un.fabric_evt.subcategory = | |
2680 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
2681 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
2682 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
2683 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
2684 | &pnode->nlp_portname, | |
2685 | sizeof(struct lpfc_name)); | |
2686 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
2687 | &pnode->nlp_nodename, | |
2688 | sizeof(struct lpfc_name)); | |
2689 | } | |
2690 | fast_path_evt->vport = vport; | |
2691 | fast_path_evt->work_evt.evt = | |
2692 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
2693 | spin_lock_irqsave(&phba->hbalock, flags); | |
2694 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
2695 | &phba->work_list); | |
2696 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
2697 | lpfc_worker_wake_up(phba); | |
dea3101e | 2698 | break; |
92d7f7b0 | 2699 | case IOSTAT_LOCAL_REJECT: |
1151e3ec | 2700 | case IOSTAT_REMOTE_STOP: |
ab56dc2e JS |
2701 | if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || |
2702 | lpfc_cmd->result == | |
2703 | IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || | |
2704 | lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || | |
2705 | lpfc_cmd->result == | |
2706 | IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { | |
2707 | cmd->result = ScsiResult(DID_NO_CONNECT, 0); | |
2708 | break; | |
2709 | } | |
d7c255b2 | 2710 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 2711 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
b92938b4 JS |
2712 | lpfc_cmd->result == IOERR_ABORT_REQUESTED || |
2713 | lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { | |
92d7f7b0 | 2714 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 2715 | break; |
e2a0a9d6 | 2716 | } |
e2a0a9d6 JS |
2717 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || |
2718 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
2719 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
2720 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
2721 | /* | |
2722 | * This is a response for a BG enabled | |
2723 | * cmd. Parse BG error | |
2724 | */ | |
2725 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
2726 | pIocbOut); | |
2727 | break; | |
2728 | } else { | |
2729 | lpfc_printf_vlog(vport, KERN_WARNING, | |
2730 | LOG_BG, | |
2731 | "9031 non-zero BGSTAT " | |
6a9c52cf | 2732 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
2733 | } |
2734 | } | |
1151e3ec JS |
2735 | if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) |
2736 | && (phba->sli_rev == LPFC_SLI_REV4) | |
2737 | && (pnode && NLP_CHK_NODE_ACT(pnode))) { | |
2738 | /* This IO was aborted by the target, we don't | |
2739 | * know the rxid and because we did not send the | |
2740 | * ABTS we cannot generate and RRQ. | |
2741 | */ | |
2742 | lpfc_set_rrq_active(phba, pnode, | |
2743 | lpfc_cmd->cur_iocbq.sli4_xritag, | |
2744 | 0, 0); | |
2745 | } | |
e2a0a9d6 | 2746 | /* else: fall through */ |
dea3101e JB |
2747 | default: |
2748 | cmd->result = ScsiResult(DID_ERROR, 0); | |
2749 | break; | |
2750 | } | |
2751 | ||
58da1ffb | 2752 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 2753 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
2754 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
2755 | SAM_STAT_BUSY); | |
ab56dc2e | 2756 | } else |
dea3101e | 2757 | cmd->result = ScsiResult(DID_OK, 0); |
dea3101e JB |
2758 | |
2759 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
2760 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
2761 | ||
e8b62011 JS |
2762 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
2763 | "0710 Iodone <%d/%d> cmd %p, error " | |
2764 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
2765 | cmd->device->id, cmd->device->lun, cmd, | |
2766 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
2767 | scsi_get_resid(cmd)); | |
dea3101e JB |
2768 | } |
2769 | ||
ea2151b4 | 2770 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 2771 | result = cmd->result; |
977b5a0a JS |
2772 | if (vport->cfg_max_scsicmpl_time && |
2773 | time_after(jiffies, lpfc_cmd->start_time + | |
2774 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 2775 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
2776 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
2777 | if (pnode->cmd_qdepth > | |
2778 | atomic_read(&pnode->cmd_pending) && | |
2779 | (atomic_read(&pnode->cmd_pending) > | |
2780 | LPFC_MIN_TGT_QDEPTH) && | |
2781 | ((cmd->cmnd[0] == READ_10) || | |
2782 | (cmd->cmnd[0] == WRITE_10))) | |
2783 | pnode->cmd_qdepth = | |
2784 | atomic_read(&pnode->cmd_pending); | |
2785 | ||
2786 | pnode->last_change_time = jiffies; | |
2787 | } | |
a257bf90 | 2788 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 2789 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
7dc517df | 2790 | if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) && |
977b5a0a | 2791 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 2792 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 2793 | spin_lock_irqsave(shost->host_lock, flags); |
7dc517df JS |
2794 | depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT |
2795 | / 100; | |
2796 | depth = depth ? depth : 1; | |
2797 | pnode->cmd_qdepth += depth; | |
2798 | if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth) | |
2799 | pnode->cmd_qdepth = vport->cfg_tgt_queue_depth; | |
109f6ed0 | 2800 | pnode->last_change_time = jiffies; |
a257bf90 | 2801 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 2802 | } |
977b5a0a JS |
2803 | } |
2804 | ||
1dcb58e5 | 2805 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
2806 | |
2807 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
2808 | queue_depth = cmd->device->queue_depth; | |
2809 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
2810 | cmd->scsi_done(cmd); |
2811 | ||
b808608b | 2812 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
2813 | /* |
2814 | * If there is a thread waiting for command completion | |
2815 | * wake up the thread. | |
2816 | */ | |
a257bf90 | 2817 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2818 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2819 | if (lpfc_cmd->waitq) |
2820 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2821 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
2822 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
2823 | return; | |
2824 | } | |
2825 | ||
92d7f7b0 | 2826 | if (!result) |
a257bf90 | 2827 | lpfc_rampup_queue_depth(vport, queue_depth); |
92d7f7b0 | 2828 | |
445cf4f4 JSEC |
2829 | /* |
2830 | * Check for queue full. If the lun is reporting queue full, then | |
2831 | * back off the lun queue depth to prevent target overloads. | |
2832 | */ | |
58da1ffb JS |
2833 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
2834 | NLP_CHK_NODE_ACT(pnode)) { | |
a257bf90 JS |
2835 | shost_for_each_device(tmp_sdev, shost) { |
2836 | if (tmp_sdev->id != scsi_id) | |
445cf4f4 JSEC |
2837 | continue; |
2838 | depth = scsi_track_queue_full(tmp_sdev, | |
5ffc266e JS |
2839 | tmp_sdev->queue_depth-1); |
2840 | if (depth <= 0) | |
2841 | continue; | |
e8b62011 JS |
2842 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2843 | "0711 detected queue full - lun queue " | |
2844 | "depth adjusted to %d.\n", depth); | |
ea2151b4 | 2845 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
5ffc266e JS |
2846 | pnode, |
2847 | tmp_sdev->lun, | |
2848 | depth+1, depth); | |
445cf4f4 JSEC |
2849 | } |
2850 | } | |
2851 | ||
fa61a54e JS |
2852 | /* |
2853 | * If there is a thread waiting for command completion | |
2854 | * wake up the thread. | |
2855 | */ | |
a257bf90 | 2856 | spin_lock_irqsave(shost->host_lock, flags); |
495a714c | 2857 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
2858 | if (lpfc_cmd->waitq) |
2859 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 2860 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 2861 | |
0bd4ca25 | 2862 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
2863 | } |
2864 | ||
34b02dcd | 2865 | /** |
3621a710 | 2866 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
2867 | * @data: A pointer to the immediate command data portion of the IOCB. |
2868 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
2869 | * | |
2870 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
2871 | * byte swapping the data to big endian format for transmission on the wire. | |
2872 | **/ | |
2873 | static void | |
2874 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
2875 | { | |
2876 | int i, j; | |
2877 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
2878 | i += sizeof(uint32_t), j++) { | |
2879 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
2880 | } | |
2881 | } | |
2882 | ||
9bad7671 | 2883 | /** |
f1126688 | 2884 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
2885 | * @vport: The virtual port for which this call is being executed. |
2886 | * @lpfc_cmd: The scsi command which needs to send. | |
2887 | * @pnode: Pointer to lpfc_nodelist. | |
2888 | * | |
2889 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 2890 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 2891 | **/ |
dea3101e | 2892 | static void |
f1126688 | 2893 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 2894 | struct lpfc_nodelist *pnode) |
dea3101e | 2895 | { |
2e0fef85 | 2896 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
2897 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
2898 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2899 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2900 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
2901 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 2902 | char tag[2]; |
dea3101e | 2903 | |
58da1ffb JS |
2904 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
2905 | return; | |
2906 | ||
dea3101e | 2907 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
2908 | /* clear task management bits */ |
2909 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 2910 | |
91886523 JSEC |
2911 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
2912 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e JB |
2913 | |
2914 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
2915 | ||
7e2b19fb JS |
2916 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
2917 | switch (tag[0]) { | |
dea3101e JB |
2918 | case HEAD_OF_QUEUE_TAG: |
2919 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
2920 | break; | |
2921 | case ORDERED_QUEUE_TAG: | |
2922 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
2923 | break; | |
2924 | default: | |
2925 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
2926 | break; | |
2927 | } | |
2928 | } else | |
2929 | fcp_cmnd->fcpCntl1 = 0; | |
2930 | ||
2931 | /* | |
2932 | * There are three possibilities here - use scatter-gather segment, use | |
2933 | * the single mapping, or neither. Start the lpfc command prep by | |
2934 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
2935 | * data bde entry. | |
2936 | */ | |
a0b4f78f | 2937 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
2938 | if (datadir == DMA_TO_DEVICE) { |
2939 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
3772a991 JS |
2940 | if (phba->sli_rev < LPFC_SLI_REV4) { |
2941 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2942 | iocb_cmd->ulpPU = 0; | |
2943 | } else | |
2944 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e JB |
2945 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
2946 | phba->fc4OutputRequests++; | |
2947 | } else { | |
2948 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
2949 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e JB |
2950 | fcp_cmnd->fcpCntl3 = READ_DATA; |
2951 | phba->fc4InputRequests++; | |
2952 | } | |
2953 | } else { | |
2954 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
2955 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
2956 | iocb_cmd->ulpPU = 0; | |
2957 | fcp_cmnd->fcpCntl3 = 0; | |
2958 | phba->fc4ControlRequests++; | |
2959 | } | |
e2a0a9d6 JS |
2960 | if (phba->sli_rev == 3 && |
2961 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 2962 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e JB |
2963 | /* |
2964 | * Finish initializing those IOCB fields that are independent | |
2965 | * of the scsi_cmnd request_buffer | |
2966 | */ | |
2967 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
6d368e53 JS |
2968 | if (phba->sli_rev == LPFC_SLI_REV4) |
2969 | piocbq->iocb.ulpContext = | |
2970 | phba->sli4_hba.rpi_ids[pnode->nlp_rpi]; | |
dea3101e JB |
2971 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) |
2972 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
2973 | else |
2974 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e JB |
2975 | |
2976 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
2977 | piocbq->context1 = lpfc_cmd; | |
2978 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
2979 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 2980 | piocbq->vport = vport; |
dea3101e JB |
2981 | } |
2982 | ||
da0436e9 | 2983 | /** |
6d368e53 | 2984 | * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
2985 | * @vport: The virtual port for which this call is being executed. |
2986 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
2987 | * @lun: Logical unit number. | |
2988 | * @task_mgmt_cmd: SCSI task management command. | |
2989 | * | |
3772a991 JS |
2990 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
2991 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
2992 | * |
2993 | * Return codes: | |
2994 | * 0 - Error | |
2995 | * 1 - Success | |
2996 | **/ | |
dea3101e | 2997 | static int |
f1126688 | 2998 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 2999 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 3000 | unsigned int lun, |
dea3101e JB |
3001 | uint8_t task_mgmt_cmd) |
3002 | { | |
dea3101e JB |
3003 | struct lpfc_iocbq *piocbq; |
3004 | IOCB_t *piocb; | |
3005 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 3006 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e JB |
3007 | struct lpfc_nodelist *ndlp = rdata->pnode; |
3008 | ||
58da1ffb JS |
3009 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
3010 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 3011 | return 0; |
dea3101e | 3012 | |
dea3101e | 3013 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
3014 | piocbq->vport = vport; |
3015 | ||
dea3101e JB |
3016 | piocb = &piocbq->iocb; |
3017 | ||
3018 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
3019 | /* Clear out any old data in the FCP command area */ |
3020 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
3021 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 3022 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
3023 | if (vport->phba->sli_rev == 3 && |
3024 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 3025 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 3026 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 3027 | piocb->ulpContext = ndlp->nlp_rpi; |
6d368e53 JS |
3028 | if (vport->phba->sli_rev == LPFC_SLI_REV4) { |
3029 | piocb->ulpContext = | |
3030 | vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; | |
3031 | } | |
dea3101e JB |
3032 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { |
3033 | piocb->ulpFCP2Rcvy = 1; | |
3034 | } | |
3035 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
3036 | ||
3037 | /* ulpTimeout is only one byte */ | |
3038 | if (lpfc_cmd->timeout > 0xff) { | |
3039 | /* | |
3040 | * Do not timeout the command at the firmware level. | |
3041 | * The driver will provide the timeout mechanism. | |
3042 | */ | |
3043 | piocb->ulpTimeout = 0; | |
f1126688 | 3044 | } else |
dea3101e | 3045 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 3046 | |
f1126688 JS |
3047 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
3048 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 3049 | |
f1126688 | 3050 | return 1; |
3772a991 JS |
3051 | } |
3052 | ||
3053 | /** | |
25985edc | 3054 | * lpfc_scsi_api_table_setup - Set up scsi api function jump table |
3772a991 JS |
3055 | * @phba: The hba struct for which this call is being executed. |
3056 | * @dev_grp: The HBA PCI-Device group number. | |
3057 | * | |
3058 | * This routine sets up the SCSI interface API function jump table in @phba | |
3059 | * struct. | |
3060 | * Returns: 0 - success, -ENODEV - failure. | |
3061 | **/ | |
3062 | int | |
3063 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
3064 | { | |
3065 | ||
f1126688 JS |
3066 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
3067 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
f1126688 | 3068 | |
3772a991 JS |
3069 | switch (dev_grp) { |
3070 | case LPFC_PCI_DEV_LP: | |
3071 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
3072 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
3772a991 | 3073 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
19ca7609 | 3074 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; |
3772a991 | 3075 | break; |
da0436e9 JS |
3076 | case LPFC_PCI_DEV_OC: |
3077 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
3078 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
da0436e9 | 3079 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
19ca7609 | 3080 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; |
da0436e9 | 3081 | break; |
3772a991 JS |
3082 | default: |
3083 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
3084 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
3085 | dev_grp); | |
3086 | return -ENODEV; | |
3087 | break; | |
3088 | } | |
3772a991 | 3089 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; |
84d1b006 | 3090 | phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; |
3772a991 JS |
3091 | return 0; |
3092 | } | |
3093 | ||
9bad7671 | 3094 | /** |
3621a710 | 3095 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
3096 | * @phba: The Hba for which this call is being executed. |
3097 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
3098 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
3099 | * | |
3100 | * This routine is IOCB completion routine for device reset and target reset | |
3101 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
3102 | **/ | |
7054a606 JS |
3103 | static void |
3104 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
3105 | struct lpfc_iocbq *cmdiocbq, | |
3106 | struct lpfc_iocbq *rspiocbq) | |
3107 | { | |
3108 | struct lpfc_scsi_buf *lpfc_cmd = | |
3109 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
3110 | if (lpfc_cmd) | |
3111 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3112 | return; | |
3113 | } | |
3114 | ||
9bad7671 | 3115 | /** |
3621a710 | 3116 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
3117 | * @host: The scsi host for which this call is being executed. |
3118 | * | |
3119 | * This routine provides module information about hba. | |
3120 | * | |
3121 | * Reutrn code: | |
3122 | * Pointer to char - Success. | |
3123 | **/ | |
dea3101e JB |
3124 | const char * |
3125 | lpfc_info(struct Scsi_Host *host) | |
3126 | { | |
2e0fef85 JS |
3127 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
3128 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
3129 | int len; |
3130 | static char lpfcinfobuf[384]; | |
3131 | ||
3132 | memset(lpfcinfobuf,0,384); | |
3133 | if (phba && phba->pcidev){ | |
3134 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
3135 | len = strlen(lpfcinfobuf); | |
3136 | snprintf(lpfcinfobuf + len, | |
3137 | 384-len, | |
3138 | " on PCI bus %02x device %02x irq %d", | |
3139 | phba->pcidev->bus->number, | |
3140 | phba->pcidev->devfn, | |
3141 | phba->pcidev->irq); | |
3142 | len = strlen(lpfcinfobuf); | |
3143 | if (phba->Port[0]) { | |
3144 | snprintf(lpfcinfobuf + len, | |
3145 | 384-len, | |
3146 | " port %s", | |
3147 | phba->Port); | |
3148 | } | |
65467b6b JS |
3149 | len = strlen(lpfcinfobuf); |
3150 | if (phba->sli4_hba.link_state.logical_speed) { | |
3151 | snprintf(lpfcinfobuf + len, | |
3152 | 384-len, | |
3153 | " Logical Link Speed: %d Mbps", | |
3154 | phba->sli4_hba.link_state.logical_speed * 10); | |
3155 | } | |
dea3101e JB |
3156 | } |
3157 | return lpfcinfobuf; | |
3158 | } | |
3159 | ||
9bad7671 | 3160 | /** |
3621a710 | 3161 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
3162 | * @phba: The Hba for which this call is being executed. |
3163 | * | |
3164 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
3165 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
3166 | **/ | |
875fbdfe JSEC |
3167 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
3168 | { | |
3169 | unsigned long poll_tmo_expires = | |
3170 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
3171 | ||
3172 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
3173 | mod_timer(&phba->fcp_poll_timer, | |
3174 | poll_tmo_expires); | |
3175 | } | |
3176 | ||
9bad7671 | 3177 | /** |
3621a710 | 3178 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
3179 | * @phba: The Hba for which this call is being executed. |
3180 | * | |
3181 | * This routine starts the fcp_poll_timer of @phba. | |
3182 | **/ | |
875fbdfe JSEC |
3183 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
3184 | { | |
3185 | lpfc_poll_rearm_timer(phba); | |
3186 | } | |
3187 | ||
9bad7671 | 3188 | /** |
3621a710 | 3189 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
3190 | * @ptr: Map to lpfc_hba data structure pointer. |
3191 | * | |
3192 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
3193 | * and FCP Ring interrupt is disable. | |
3194 | **/ | |
3195 | ||
875fbdfe JSEC |
3196 | void lpfc_poll_timeout(unsigned long ptr) |
3197 | { | |
2e0fef85 | 3198 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
3199 | |
3200 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
3201 | lpfc_sli_handle_fast_ring_event(phba, |
3202 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
3203 | ||
875fbdfe JSEC |
3204 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
3205 | lpfc_poll_rearm_timer(phba); | |
3206 | } | |
875fbdfe JSEC |
3207 | } |
3208 | ||
9bad7671 | 3209 | /** |
3621a710 | 3210 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
3211 | * @cmnd: Pointer to scsi_cmnd data structure. |
3212 | * @done: Pointer to done routine. | |
3213 | * | |
3214 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
3215 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
3216 | * The @done callback is invoked after driver finished processing the command. | |
3217 | * | |
3218 | * Return value : | |
3219 | * 0 - Success | |
3220 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
3221 | **/ | |
dea3101e | 3222 | static int |
f281233d | 3223 | lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) |
dea3101e | 3224 | { |
2e0fef85 JS |
3225 | struct Scsi_Host *shost = cmnd->device->host; |
3226 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3227 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 3228 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1c6f4ef5 | 3229 | struct lpfc_nodelist *ndlp; |
0bd4ca25 | 3230 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 3231 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 3232 | int err; |
dea3101e | 3233 | |
19a7b4ae JSEC |
3234 | err = fc_remote_port_chkready(rport); |
3235 | if (err) { | |
3236 | cmnd->result = err; | |
dea3101e JB |
3237 | goto out_fail_command; |
3238 | } | |
1c6f4ef5 | 3239 | ndlp = rdata->pnode; |
dea3101e | 3240 | |
bf08611b JS |
3241 | if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && |
3242 | (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED) || | |
3243 | (phba->sli_rev == LPFC_SLI_REV4))) { | |
e2a0a9d6 | 3244 | |
6a9c52cf JS |
3245 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
3246 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
3247 | " op:%02x str=%s without registering for" | |
3248 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
3249 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
3250 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
3251 | goto out_fail_command; | |
3252 | } | |
3253 | ||
dea3101e | 3254 | /* |
19a7b4ae JSEC |
3255 | * Catch race where our node has transitioned, but the |
3256 | * transport is still transitioning. | |
dea3101e | 3257 | */ |
b522d7d4 | 3258 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
f55ca84d | 3259 | cmnd->result = ScsiResult(DID_IMM_RETRY, 0); |
b522d7d4 JS |
3260 | goto out_fail_command; |
3261 | } | |
7dc517df | 3262 | if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) |
3496343d | 3263 | goto out_tgt_busy; |
a93ce024 | 3264 | |
19ca7609 | 3265 | lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp); |
dea3101e | 3266 | if (lpfc_cmd == NULL) { |
eaf15d5b | 3267 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 3268 | |
e8b62011 JS |
3269 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
3270 | "0707 driver's buffer pool is empty, " | |
3271 | "IO busied\n"); | |
dea3101e JB |
3272 | goto out_host_busy; |
3273 | } | |
3274 | ||
3275 | /* | |
3276 | * Store the midlayer's command structure for the completion phase | |
3277 | * and complete the command initialization. | |
3278 | */ | |
3279 | lpfc_cmd->pCmd = cmnd; | |
3280 | lpfc_cmd->rdata = rdata; | |
3281 | lpfc_cmd->timeout = 0; | |
977b5a0a | 3282 | lpfc_cmd->start_time = jiffies; |
dea3101e JB |
3283 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
3284 | cmnd->scsi_done = done; | |
3285 | ||
e2a0a9d6 | 3286 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf JS |
3287 | if (vport->phba->cfg_enable_bg) { |
3288 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 JS |
3289 | "9033 BLKGRD: rcvd protected cmd:%02x op:%02x " |
3290 | "str=%s\n", | |
3291 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
3292 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
6a9c52cf | 3293 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
e2a0a9d6 | 3294 | "9034 BLKGRD: CDB: %02x %02x %02x %02x %02x " |
e4e74273 | 3295 | "%02x %02x %02x %02x %02x\n", |
e2a0a9d6 JS |
3296 | cmnd->cmnd[0], cmnd->cmnd[1], cmnd->cmnd[2], |
3297 | cmnd->cmnd[3], cmnd->cmnd[4], cmnd->cmnd[5], | |
3298 | cmnd->cmnd[6], cmnd->cmnd[7], cmnd->cmnd[8], | |
3299 | cmnd->cmnd[9]); | |
6a9c52cf JS |
3300 | if (cmnd->cmnd[0] == READ_10) |
3301 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 3302 | "9035 BLKGRD: READ @ sector %llu, " |
83096ebf TH |
3303 | "count %u\n", |
3304 | (unsigned long long)scsi_get_lba(cmnd), | |
3305 | blk_rq_sectors(cmnd->request)); | |
6a9c52cf JS |
3306 | else if (cmnd->cmnd[0] == WRITE_10) |
3307 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 3308 | "9036 BLKGRD: WRITE @ sector %llu, " |
83096ebf | 3309 | "count %u cmd=%p\n", |
87b5c328 | 3310 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 3311 | blk_rq_sectors(cmnd->request), |
e2a0a9d6 | 3312 | cmnd); |
6a9c52cf | 3313 | } |
e2a0a9d6 JS |
3314 | |
3315 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3316 | } else { | |
6a9c52cf | 3317 | if (vport->phba->cfg_enable_bg) { |
e2a0a9d6 | 3318 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, |
6a9c52cf JS |
3319 | "9038 BLKGRD: rcvd unprotected cmd:" |
3320 | "%02x op:%02x str=%s\n", | |
3321 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), | |
3322 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
3323 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
3324 | "9039 BLKGRD: CDB: %02x %02x %02x " | |
3325 | "%02x %02x %02x %02x %02x %02x %02x\n", | |
3326 | cmnd->cmnd[0], cmnd->cmnd[1], | |
3327 | cmnd->cmnd[2], cmnd->cmnd[3], | |
3328 | cmnd->cmnd[4], cmnd->cmnd[5], | |
3329 | cmnd->cmnd[6], cmnd->cmnd[7], | |
3330 | cmnd->cmnd[8], cmnd->cmnd[9]); | |
3331 | if (cmnd->cmnd[0] == READ_10) | |
3332 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
3333 | "9040 dbg: READ @ sector %llu, " | |
3334 | "count %u\n", | |
3335 | (unsigned long long)scsi_get_lba(cmnd), | |
83096ebf | 3336 | blk_rq_sectors(cmnd->request)); |
6a9c52cf JS |
3337 | else if (cmnd->cmnd[0] == WRITE_10) |
3338 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 3339 | "9041 dbg: WRITE @ sector %llu, " |
83096ebf | 3340 | "count %u cmd=%p\n", |
87b5c328 | 3341 | (unsigned long long)scsi_get_lba(cmnd), |
83096ebf | 3342 | blk_rq_sectors(cmnd->request), cmnd); |
6a9c52cf JS |
3343 | else |
3344 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG, | |
e2a0a9d6 | 3345 | "9042 dbg: parser not implemented\n"); |
6a9c52cf | 3346 | } |
e2a0a9d6 JS |
3347 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
3348 | } | |
3349 | ||
dea3101e JB |
3350 | if (err) |
3351 | goto out_host_busy_free_buf; | |
3352 | ||
2e0fef85 | 3353 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 3354 | |
977b5a0a | 3355 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 3356 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 3357 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
3358 | if (err) { |
3359 | atomic_dec(&ndlp->cmd_pending); | |
dea3101e | 3360 | goto out_host_busy_free_buf; |
eaf15d5b | 3361 | } |
875fbdfe | 3362 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
3363 | spin_unlock(shost->host_lock); |
3364 | lpfc_sli_handle_fast_ring_event(phba, | |
3365 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
3366 | ||
3367 | spin_lock(shost->host_lock); | |
875fbdfe JSEC |
3368 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
3369 | lpfc_poll_rearm_timer(phba); | |
3370 | } | |
3371 | ||
dea3101e JB |
3372 | return 0; |
3373 | ||
3374 | out_host_busy_free_buf: | |
bcf4dbfa | 3375 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 3376 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
3377 | out_host_busy: |
3378 | return SCSI_MLQUEUE_HOST_BUSY; | |
3379 | ||
3496343d MC |
3380 | out_tgt_busy: |
3381 | return SCSI_MLQUEUE_TARGET_BUSY; | |
3382 | ||
dea3101e JB |
3383 | out_fail_command: |
3384 | done(cmnd); | |
3385 | return 0; | |
3386 | } | |
3387 | ||
f281233d JG |
3388 | static DEF_SCSI_QCMD(lpfc_queuecommand) |
3389 | ||
9bad7671 | 3390 | /** |
3621a710 | 3391 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
3392 | * @cmnd: Pointer to scsi_cmnd data structure. |
3393 | * | |
3394 | * This routine aborts @cmnd pending in base driver. | |
3395 | * | |
3396 | * Return code : | |
3397 | * 0x2003 - Error | |
3398 | * 0x2002 - Success | |
3399 | **/ | |
dea3101e | 3400 | static int |
63c59c3b | 3401 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 3402 | { |
2e0fef85 JS |
3403 | struct Scsi_Host *shost = cmnd->device->host; |
3404 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3405 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
3406 | struct lpfc_iocbq *iocb; |
3407 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 3408 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 3409 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 3410 | int ret = SUCCESS; |
fa61a54e | 3411 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 3412 | |
589a52d6 JS |
3413 | ret = fc_block_scsi_eh(cmnd); |
3414 | if (ret) | |
3415 | return ret; | |
0bd4ca25 | 3416 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
eee8877e JS |
3417 | if (!lpfc_cmd) { |
3418 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
3419 | "2873 SCSI Layer I/O Abort Request IO CMPL Status " | |
5cd049a5 CH |
3420 | "x%x ID %d LUN %d\n", |
3421 | ret, cmnd->device->id, cmnd->device->lun); | |
eee8877e JS |
3422 | return SUCCESS; |
3423 | } | |
dea3101e | 3424 | |
0bd4ca25 JSEC |
3425 | /* |
3426 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
3427 | * points to a different SCSI command, then the driver has | |
3428 | * already completed this command, but the midlayer did not | |
3429 | * see the completion before the eh fired. Just return | |
3430 | * SUCCESS. | |
3431 | */ | |
3432 | iocb = &lpfc_cmd->cur_iocbq; | |
3433 | if (lpfc_cmd->pCmd != cmnd) | |
3434 | goto out; | |
dea3101e | 3435 | |
0bd4ca25 | 3436 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 3437 | |
0bd4ca25 JSEC |
3438 | abtsiocb = lpfc_sli_get_iocbq(phba); |
3439 | if (abtsiocb == NULL) { | |
3440 | ret = FAILED; | |
dea3101e JB |
3441 | goto out; |
3442 | } | |
3443 | ||
dea3101e | 3444 | /* |
0bd4ca25 JSEC |
3445 | * The scsi command can not be in txq and it is in flight because the |
3446 | * pCmd is still pointig at the SCSI command we have to abort. There | |
3447 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 3448 | */ |
dea3101e | 3449 | |
0bd4ca25 JSEC |
3450 | cmd = &iocb->iocb; |
3451 | icmd = &abtsiocb->iocb; | |
3452 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
3453 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
3454 | if (phba->sli_rev == LPFC_SLI_REV4) |
3455 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
3456 | else | |
3457 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 3458 | |
0bd4ca25 JSEC |
3459 | icmd->ulpLe = 1; |
3460 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
3461 | |
3462 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
3463 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
341af102 | 3464 | abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
5ffc266e | 3465 | |
2e0fef85 | 3466 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
3467 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
3468 | else | |
3469 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 3470 | |
0bd4ca25 | 3471 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 3472 | abtsiocb->vport = vport; |
3772a991 JS |
3473 | if (lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, abtsiocb, 0) == |
3474 | IOCB_ERROR) { | |
0bd4ca25 JSEC |
3475 | lpfc_sli_release_iocbq(phba, abtsiocb); |
3476 | ret = FAILED; | |
3477 | goto out; | |
3478 | } | |
dea3101e | 3479 | |
875fbdfe | 3480 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
3481 | lpfc_sli_handle_fast_ring_event(phba, |
3482 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 3483 | |
fa61a54e | 3484 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 3485 | /* Wait for abort to complete */ |
fa61a54e JS |
3486 | wait_event_timeout(waitq, |
3487 | (lpfc_cmd->pCmd != cmnd), | |
3488 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 3489 | |
fa61a54e JS |
3490 | spin_lock_irq(shost->host_lock); |
3491 | lpfc_cmd->waitq = NULL; | |
3492 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 3493 | |
0bd4ca25 JSEC |
3494 | if (lpfc_cmd->pCmd == cmnd) { |
3495 | ret = FAILED; | |
e8b62011 JS |
3496 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3497 | "0748 abort handler timed out waiting " | |
3498 | "for abort to complete: ret %#x, ID %d, " | |
5cd049a5 CH |
3499 | "LUN %d\n", |
3500 | ret, cmnd->device->id, cmnd->device->lun); | |
dea3101e JB |
3501 | } |
3502 | ||
3503 | out: | |
e8b62011 JS |
3504 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3505 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
5cd049a5 CH |
3506 | "LUN %d\n", ret, cmnd->device->id, |
3507 | cmnd->device->lun); | |
63c59c3b | 3508 | return ret; |
8fa728a2 JG |
3509 | } |
3510 | ||
bbb9d180 JS |
3511 | static char * |
3512 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
3513 | { | |
3514 | switch (task_mgmt_cmd) { | |
3515 | case FCP_ABORT_TASK_SET: | |
3516 | return "ABORT_TASK_SET"; | |
3517 | case FCP_CLEAR_TASK_SET: | |
3518 | return "FCP_CLEAR_TASK_SET"; | |
3519 | case FCP_BUS_RESET: | |
3520 | return "FCP_BUS_RESET"; | |
3521 | case FCP_LUN_RESET: | |
3522 | return "FCP_LUN_RESET"; | |
3523 | case FCP_TARGET_RESET: | |
3524 | return "FCP_TARGET_RESET"; | |
3525 | case FCP_CLEAR_ACA: | |
3526 | return "FCP_CLEAR_ACA"; | |
3527 | case FCP_TERMINATE_TASK: | |
3528 | return "FCP_TERMINATE_TASK"; | |
3529 | default: | |
3530 | return "unknown"; | |
3531 | } | |
3532 | } | |
3533 | ||
9bad7671 | 3534 | /** |
bbb9d180 JS |
3535 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
3536 | * @vport: The virtual port for which this call is being executed. | |
3537 | * @rdata: Pointer to remote port local data | |
3538 | * @tgt_id: Target ID of remote device. | |
3539 | * @lun_id: Lun number for the TMF | |
3540 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 3541 | * |
bbb9d180 JS |
3542 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
3543 | * a remote port. | |
9bad7671 | 3544 | * |
bbb9d180 JS |
3545 | * Return Code: |
3546 | * 0x2003 - Error | |
3547 | * 0x2002 - Success. | |
9bad7671 | 3548 | **/ |
dea3101e | 3549 | static int |
bbb9d180 JS |
3550 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
3551 | unsigned tgt_id, unsigned int lun_id, | |
3552 | uint8_t task_mgmt_cmd) | |
dea3101e | 3553 | { |
2e0fef85 | 3554 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 3555 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
3556 | struct lpfc_iocbq *iocbq; |
3557 | struct lpfc_iocbq *iocbqrsp; | |
5989b8d4 | 3558 | struct lpfc_nodelist *pnode = rdata->pnode; |
bbb9d180 | 3559 | int ret; |
915caaaf | 3560 | int status; |
dea3101e | 3561 | |
5989b8d4 | 3562 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 3563 | return FAILED; |
bbb9d180 | 3564 | |
19ca7609 | 3565 | lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode); |
dea3101e | 3566 | if (lpfc_cmd == NULL) |
915caaaf | 3567 | return FAILED; |
dea3101e | 3568 | lpfc_cmd->timeout = 60; |
0b18ac42 | 3569 | lpfc_cmd->rdata = rdata; |
dea3101e | 3570 | |
bbb9d180 JS |
3571 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
3572 | task_mgmt_cmd); | |
915caaaf JS |
3573 | if (!status) { |
3574 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3575 | return FAILED; | |
3576 | } | |
dea3101e | 3577 | |
bbb9d180 | 3578 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 3579 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
3580 | if (iocbqrsp == NULL) { |
3581 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3582 | return FAILED; | |
3583 | } | |
bbb9d180 | 3584 | |
e8b62011 | 3585 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
bbb9d180 | 3586 | "0702 Issue %s to TGT %d LUN %d " |
6d368e53 | 3587 | "rpi x%x nlp_flag x%x Data: x%x x%x\n", |
bbb9d180 | 3588 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, |
6d368e53 JS |
3589 | pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, |
3590 | iocbq->iocb_flag); | |
bbb9d180 | 3591 | |
3772a991 | 3592 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 3593 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
bbb9d180 JS |
3594 | if (status != IOCB_SUCCESS) { |
3595 | if (status == IOCB_TIMEDOUT) { | |
3596 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
3597 | ret = TIMEOUT_ERROR; | |
3598 | } else | |
915caaaf | 3599 | ret = FAILED; |
bbb9d180 JS |
3600 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
3601 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
6d368e53 JS |
3602 | "0727 TMF %s to TGT %d LUN %d failed (%d, %d) " |
3603 | "iocb_flag x%x\n", | |
bbb9d180 JS |
3604 | lpfc_taskmgmt_name(task_mgmt_cmd), |
3605 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
6d368e53 JS |
3606 | iocbqrsp->iocb.un.ulpWord[4], |
3607 | iocbq->iocb_flag); | |
2a9bf3d0 JS |
3608 | } else if (status == IOCB_BUSY) |
3609 | ret = FAILED; | |
3610 | else | |
bbb9d180 JS |
3611 | ret = SUCCESS; |
3612 | ||
6175c02a | 3613 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
3614 | |
3615 | if (ret != TIMEOUT_ERROR) | |
3616 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
3617 | ||
3618 | return ret; | |
3619 | } | |
3620 | ||
3621 | /** | |
3622 | * lpfc_chk_tgt_mapped - | |
3623 | * @vport: The virtual port to check on | |
3624 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3625 | * | |
3626 | * This routine delays until the scsi target (aka rport) for the | |
3627 | * command exists (is present and logged in) or we declare it non-existent. | |
3628 | * | |
3629 | * Return code : | |
3630 | * 0x2003 - Error | |
3631 | * 0x2002 - Success | |
3632 | **/ | |
3633 | static int | |
3634 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
3635 | { | |
3636 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3637 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3638 | unsigned long later; |
3639 | ||
1c6f4ef5 JS |
3640 | if (!rdata) { |
3641 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
3642 | "0797 Tgt Map rport failure: rdata x%p\n", rdata); | |
3643 | return FAILED; | |
3644 | } | |
3645 | pnode = rdata->pnode; | |
bbb9d180 JS |
3646 | /* |
3647 | * If target is not in a MAPPED state, delay until | |
3648 | * target is rediscovered or devloss timeout expires. | |
3649 | */ | |
3650 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
3651 | while (time_after(later, jiffies)) { | |
3652 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
3653 | return FAILED; | |
3654 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
3655 | return SUCCESS; | |
3656 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
3657 | rdata = cmnd->device->hostdata; | |
3658 | if (!rdata) | |
3659 | return FAILED; | |
3660 | pnode = rdata->pnode; | |
3661 | } | |
3662 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
3663 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
3664 | return FAILED; | |
3665 | return SUCCESS; | |
3666 | } | |
3667 | ||
3668 | /** | |
3669 | * lpfc_reset_flush_io_context - | |
3670 | * @vport: The virtual port (scsi_host) for the flush context | |
3671 | * @tgt_id: If aborting by Target contect - specifies the target id | |
3672 | * @lun_id: If aborting by Lun context - specifies the lun id | |
3673 | * @context: specifies the context level to flush at. | |
3674 | * | |
3675 | * After a reset condition via TMF, we need to flush orphaned i/o | |
3676 | * contexts from the adapter. This routine aborts any contexts | |
3677 | * outstanding, then waits for their completions. The wait is | |
3678 | * bounded by devloss_tmo though. | |
3679 | * | |
3680 | * Return code : | |
3681 | * 0x2003 - Error | |
3682 | * 0x2002 - Success | |
3683 | **/ | |
3684 | static int | |
3685 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
3686 | uint64_t lun_id, lpfc_ctx_cmd context) | |
3687 | { | |
3688 | struct lpfc_hba *phba = vport->phba; | |
3689 | unsigned long later; | |
3690 | int cnt; | |
3691 | ||
3692 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 3693 | if (cnt) |
51ef4c26 | 3694 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
bbb9d180 | 3695 | tgt_id, lun_id, context); |
915caaaf JS |
3696 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
3697 | while (time_after(later, jiffies) && cnt) { | |
3698 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 3699 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 3700 | } |
dea3101e | 3701 | if (cnt) { |
e8b62011 | 3702 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
3703 | "0724 I/O flush failure for context %s : cnt x%x\n", |
3704 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
3705 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
3706 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
3707 | cnt); | |
3708 | return FAILED; | |
dea3101e | 3709 | } |
bbb9d180 JS |
3710 | return SUCCESS; |
3711 | } | |
3712 | ||
3713 | /** | |
3714 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
3715 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3716 | * | |
3717 | * This routine does a device reset by sending a LUN_RESET task management | |
3718 | * command. | |
3719 | * | |
3720 | * Return code : | |
3721 | * 0x2003 - Error | |
3722 | * 0x2002 - Success | |
3723 | **/ | |
3724 | static int | |
3725 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
3726 | { | |
3727 | struct Scsi_Host *shost = cmnd->device->host; | |
3728 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3729 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3730 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3731 | unsigned tgt_id = cmnd->device->id; |
3732 | unsigned int lun_id = cmnd->device->lun; | |
3733 | struct lpfc_scsi_event_header scsi_event; | |
3734 | int status; | |
3735 | ||
1c6f4ef5 JS |
3736 | if (!rdata) { |
3737 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3738 | "0798 Device Reset rport failure: rdata x%p\n", rdata); | |
3739 | return FAILED; | |
3740 | } | |
3741 | pnode = rdata->pnode; | |
589a52d6 JS |
3742 | status = fc_block_scsi_eh(cmnd); |
3743 | if (status) | |
3744 | return status; | |
bbb9d180 JS |
3745 | |
3746 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3747 | if (status == FAILED) { | |
3748 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3749 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
3750 | return FAILED; | |
3751 | } | |
3752 | ||
3753 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3754 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
3755 | scsi_event.lun = lun_id; | |
3756 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3757 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3758 | ||
3759 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3760 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3761 | ||
3762 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3763 | FCP_LUN_RESET); | |
3764 | ||
3765 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3766 | "0713 SCSI layer issued Device Reset (%d, %d) " | |
3767 | "return x%x\n", tgt_id, lun_id, status); | |
3768 | ||
3769 | /* | |
3770 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3771 | * or if the TMF failed, they may be in an indeterminate state. | |
3772 | * So, continue on. | |
3773 | * We will report success if all the i/o aborts successfully. | |
3774 | */ | |
3775 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3776 | LPFC_CTX_LUN); | |
3777 | return status; | |
3778 | } | |
3779 | ||
3780 | /** | |
3781 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
3782 | * @cmnd: Pointer to scsi_cmnd data structure. | |
3783 | * | |
3784 | * This routine does a target reset by sending a TARGET_RESET task management | |
3785 | * command. | |
3786 | * | |
3787 | * Return code : | |
3788 | * 0x2003 - Error | |
3789 | * 0x2002 - Success | |
3790 | **/ | |
3791 | static int | |
3792 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
3793 | { | |
3794 | struct Scsi_Host *shost = cmnd->device->host; | |
3795 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
3796 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
1c6f4ef5 | 3797 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
3798 | unsigned tgt_id = cmnd->device->id; |
3799 | unsigned int lun_id = cmnd->device->lun; | |
3800 | struct lpfc_scsi_event_header scsi_event; | |
3801 | int status; | |
3802 | ||
1c6f4ef5 JS |
3803 | if (!rdata) { |
3804 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3805 | "0799 Target Reset rport failure: rdata x%p\n", rdata); | |
3806 | return FAILED; | |
3807 | } | |
3808 | pnode = rdata->pnode; | |
589a52d6 JS |
3809 | status = fc_block_scsi_eh(cmnd); |
3810 | if (status) | |
3811 | return status; | |
bbb9d180 JS |
3812 | |
3813 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
3814 | if (status == FAILED) { | |
3815 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3816 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
3817 | return FAILED; | |
3818 | } | |
3819 | ||
3820 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3821 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
3822 | scsi_event.lun = 0; | |
3823 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3824 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3825 | ||
3826 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
3827 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
3828 | ||
3829 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
3830 | FCP_TARGET_RESET); | |
3831 | ||
3832 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3833 | "0723 SCSI layer issued Target Reset (%d, %d) " | |
3834 | "return x%x\n", tgt_id, lun_id, status); | |
3835 | ||
3836 | /* | |
3837 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
3838 | * or if the TMF failed, they may be in an indeterminate state. | |
3839 | * So, continue on. | |
3840 | * We will report success if all the i/o aborts successfully. | |
3841 | */ | |
3842 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3843 | LPFC_CTX_TGT); | |
3844 | return status; | |
dea3101e JB |
3845 | } |
3846 | ||
9bad7671 | 3847 | /** |
3621a710 | 3848 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
3849 | * @cmnd: Pointer to scsi_cmnd data structure. |
3850 | * | |
bbb9d180 JS |
3851 | * This routine does target reset to all targets on @cmnd->device->host. |
3852 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 3853 | * |
bbb9d180 JS |
3854 | * Return code : |
3855 | * 0x2003 - Error | |
3856 | * 0x2002 - Success | |
9bad7671 | 3857 | **/ |
94d0e7b8 | 3858 | static int |
7054a606 | 3859 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 3860 | { |
2e0fef85 JS |
3861 | struct Scsi_Host *shost = cmnd->device->host; |
3862 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 3863 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 3864 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
3865 | int match; |
3866 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
3867 | |
3868 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
3869 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
3870 | scsi_event.lun = 0; | |
3871 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
3872 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
3873 | ||
bbb9d180 JS |
3874 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
3875 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 3876 | |
bf08611b JS |
3877 | status = fc_block_scsi_eh(cmnd); |
3878 | if (status) | |
3879 | return status; | |
bbb9d180 | 3880 | |
dea3101e JB |
3881 | /* |
3882 | * Since the driver manages a single bus device, reset all | |
3883 | * targets known to the driver. Should any target reset | |
3884 | * fail, this routine returns failure to the midlayer. | |
3885 | */ | |
e17da18e | 3886 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 3887 | /* Search for mapped node by target ID */ |
dea3101e | 3888 | match = 0; |
2e0fef85 JS |
3889 | spin_lock_irq(shost->host_lock); |
3890 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
3891 | if (!NLP_CHK_NODE_ACT(ndlp)) |
3892 | continue; | |
685f0bf7 | 3893 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 3894 | ndlp->nlp_sid == i && |
685f0bf7 | 3895 | ndlp->rport) { |
dea3101e JB |
3896 | match = 1; |
3897 | break; | |
3898 | } | |
3899 | } | |
2e0fef85 | 3900 | spin_unlock_irq(shost->host_lock); |
dea3101e JB |
3901 | if (!match) |
3902 | continue; | |
bbb9d180 JS |
3903 | |
3904 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
3905 | i, 0, FCP_TARGET_RESET); | |
3906 | ||
3907 | if (status != SUCCESS) { | |
e8b62011 JS |
3908 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3909 | "0700 Bus Reset on target %d failed\n", | |
3910 | i); | |
915caaaf | 3911 | ret = FAILED; |
dea3101e JB |
3912 | } |
3913 | } | |
6175c02a | 3914 | /* |
bbb9d180 JS |
3915 | * We have to clean up i/o as : they may be orphaned by the TMFs |
3916 | * above; or if any of the TMFs failed, they may be in an | |
3917 | * indeterminate state. | |
3918 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 3919 | */ |
bbb9d180 JS |
3920 | |
3921 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
3922 | if (status != SUCCESS) | |
0bd4ca25 | 3923 | ret = FAILED; |
bbb9d180 | 3924 | |
e8b62011 JS |
3925 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3926 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e JB |
3927 | return ret; |
3928 | } | |
3929 | ||
9bad7671 | 3930 | /** |
3621a710 | 3931 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
3932 | * @sdev: Pointer to scsi_device. |
3933 | * | |
3934 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
3935 | * globally available list of scsi buffers. This routine also makes sure scsi | |
3936 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
3937 | * of scsi buffer exists for the lifetime of the driver. | |
3938 | * | |
3939 | * Return codes: | |
3940 | * non-0 - Error | |
3941 | * 0 - Success | |
3942 | **/ | |
dea3101e JB |
3943 | static int |
3944 | lpfc_slave_alloc(struct scsi_device *sdev) | |
3945 | { | |
2e0fef85 JS |
3946 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
3947 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 3948 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 3949 | uint32_t total = 0; |
dea3101e | 3950 | uint32_t num_to_alloc = 0; |
3772a991 | 3951 | int num_allocated = 0; |
d7c47992 | 3952 | uint32_t sdev_cnt; |
dea3101e | 3953 | |
19a7b4ae | 3954 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e JB |
3955 | return -ENXIO; |
3956 | ||
19a7b4ae | 3957 | sdev->hostdata = rport->dd_data; |
d7c47992 | 3958 | sdev_cnt = atomic_inc_return(&phba->sdev_cnt); |
dea3101e JB |
3959 | |
3960 | /* | |
3961 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
3962 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
3963 | * HBA limit conveyed to the midlayer via the host structure. The |
3964 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
3965 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e JB |
3966 | */ |
3967 | total = phba->total_scsi_bufs; | |
3de2a653 | 3968 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 | 3969 | |
d7c47992 JS |
3970 | /* If allocated buffers are enough do nothing */ |
3971 | if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) | |
3972 | return 0; | |
3973 | ||
92d7f7b0 JS |
3974 | /* Allow some exchanges to be available always to complete discovery */ |
3975 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3976 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3977 | "0704 At limitation of %d preallocated " | |
3978 | "command buffers\n", total); | |
dea3101e | 3979 | return 0; |
92d7f7b0 JS |
3980 | /* Allow some exchanges to be available always to complete discovery */ |
3981 | } else if (total + num_to_alloc > | |
3982 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
3983 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
3984 | "0705 Allocation request of %d " | |
3985 | "command buffers will exceed max of %d. " | |
3986 | "Reducing allocation request to %d.\n", | |
3987 | num_to_alloc, phba->cfg_hba_queue_depth, | |
3988 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e JB |
3989 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
3990 | } | |
3772a991 JS |
3991 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
3992 | if (num_to_alloc != num_allocated) { | |
3993 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
3994 | "0708 Allocation request of %d " | |
3995 | "command buffers did not succeed. " | |
3996 | "Allocated %d buffers.\n", | |
3997 | num_to_alloc, num_allocated); | |
dea3101e | 3998 | } |
1c6f4ef5 JS |
3999 | if (num_allocated > 0) |
4000 | phba->total_scsi_bufs += num_allocated; | |
dea3101e JB |
4001 | return 0; |
4002 | } | |
4003 | ||
9bad7671 | 4004 | /** |
3621a710 | 4005 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
4006 | * @sdev: Pointer to scsi_device. |
4007 | * | |
4008 | * This routine configures following items | |
4009 | * - Tag command queuing support for @sdev if supported. | |
9bad7671 JS |
4010 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. |
4011 | * | |
4012 | * Return codes: | |
4013 | * 0 - Success | |
4014 | **/ | |
dea3101e JB |
4015 | static int |
4016 | lpfc_slave_configure(struct scsi_device *sdev) | |
4017 | { | |
2e0fef85 JS |
4018 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
4019 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
4020 | |
4021 | if (sdev->tagged_supported) | |
3de2a653 | 4022 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 4023 | else |
3de2a653 | 4024 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 4025 | |
875fbdfe | 4026 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
4027 | lpfc_sli_handle_fast_ring_event(phba, |
4028 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
4029 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4030 | lpfc_poll_rearm_timer(phba); | |
4031 | } | |
4032 | ||
dea3101e JB |
4033 | return 0; |
4034 | } | |
4035 | ||
9bad7671 | 4036 | /** |
3621a710 | 4037 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
4038 | * @sdev: Pointer to scsi_device. |
4039 | * | |
4040 | * This routine sets @sdev hostatdata filed to null. | |
4041 | **/ | |
dea3101e JB |
4042 | static void |
4043 | lpfc_slave_destroy(struct scsi_device *sdev) | |
4044 | { | |
d7c47992 JS |
4045 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
4046 | struct lpfc_hba *phba = vport->phba; | |
4047 | atomic_dec(&phba->sdev_cnt); | |
dea3101e JB |
4048 | sdev->hostdata = NULL; |
4049 | return; | |
4050 | } | |
4051 | ||
92d7f7b0 | 4052 | |
dea3101e JB |
4053 | struct scsi_host_template lpfc_template = { |
4054 | .module = THIS_MODULE, | |
4055 | .name = LPFC_DRIVER_NAME, | |
4056 | .info = lpfc_info, | |
4057 | .queuecommand = lpfc_queuecommand, | |
4058 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
4059 | .eh_device_reset_handler = lpfc_device_reset_handler, |
4060 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 4061 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
dea3101e JB |
4062 | .slave_alloc = lpfc_slave_alloc, |
4063 | .slave_configure = lpfc_slave_configure, | |
4064 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 4065 | .scan_finished = lpfc_scan_finished, |
dea3101e | 4066 | .this_id = -1, |
83108bd3 | 4067 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e JB |
4068 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
4069 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 4070 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 4071 | .max_sectors = 0xFFFF, |
f1c3b0fc | 4072 | .vendor_id = LPFC_NL_VENDOR_ID, |
5ffc266e | 4073 | .change_queue_depth = lpfc_change_queue_depth, |
dea3101e | 4074 | }; |
3de2a653 JS |
4075 | |
4076 | struct scsi_host_template lpfc_vport_template = { | |
4077 | .module = THIS_MODULE, | |
4078 | .name = LPFC_DRIVER_NAME, | |
4079 | .info = lpfc_info, | |
4080 | .queuecommand = lpfc_queuecommand, | |
4081 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
4082 | .eh_device_reset_handler = lpfc_device_reset_handler, |
4083 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
4084 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
4085 | .slave_alloc = lpfc_slave_alloc, | |
4086 | .slave_configure = lpfc_slave_configure, | |
4087 | .slave_destroy = lpfc_slave_destroy, | |
4088 | .scan_finished = lpfc_scan_finished, | |
4089 | .this_id = -1, | |
83108bd3 | 4090 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
4091 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
4092 | .use_clustering = ENABLE_CLUSTERING, | |
4093 | .shost_attrs = lpfc_vport_attrs, | |
4094 | .max_sectors = 0xFFFF, | |
5ffc266e | 4095 | .change_queue_depth = lpfc_change_queue_depth, |
3de2a653 | 4096 | }; |