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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
e47c9093 | 4 | * Copyright (C) 2004-2008 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 JB |
20 | *******************************************************************/ |
21 | ||
dea3101e JB |
22 | #include <linux/pci.h> |
23 | #include <linux/interrupt.h> | |
a90f5684 | 24 | #include <linux/delay.h> |
dea3101e JB |
25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
28 | #include <scsi/scsi_host.h> | |
29 | #include <scsi/scsi_tcq.h> | |
30 | #include <scsi/scsi_transport_fc.h> | |
31 | ||
32 | #include "lpfc_version.h" | |
33 | #include "lpfc_hw.h" | |
34 | #include "lpfc_sli.h" | |
ea2151b4 | 35 | #include "lpfc_nl.h" |
dea3101e JB |
36 | #include "lpfc_disc.h" |
37 | #include "lpfc_scsi.h" | |
38 | #include "lpfc.h" | |
39 | #include "lpfc_logmsg.h" | |
40 | #include "lpfc_crtn.h" | |
92d7f7b0 | 41 | #include "lpfc_vport.h" |
dea3101e JB |
42 | |
43 | #define LPFC_RESET_WAIT 2 | |
44 | #define LPFC_ABORT_WAIT 2 | |
45 | ||
ea2151b4 JS |
46 | /** |
47 | * lpfc_update_stats: Update statistical data for the command completion. | |
48 | * @phba: Pointer to HBA object. | |
49 | * @lpfc_cmd: lpfc scsi command object pointer. | |
50 | * | |
51 | * This function is called when there is a command completion and this | |
52 | * function updates the statistical data for the command completion. | |
53 | **/ | |
54 | static void | |
55 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
56 | { | |
57 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
58 | struct lpfc_nodelist *pnode = rdata->pnode; | |
59 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
60 | unsigned long flags; | |
61 | struct Scsi_Host *shost = cmd->device->host; | |
62 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
63 | unsigned long latency; | |
64 | int i; | |
65 | ||
66 | if (cmd->result) | |
67 | return; | |
68 | ||
69 | spin_lock_irqsave(shost->host_lock, flags); | |
70 | if (!vport->stat_data_enabled || | |
71 | vport->stat_data_blocked || | |
72 | !pnode->lat_data || | |
73 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
74 | spin_unlock_irqrestore(shost->host_lock, flags); | |
75 | return; | |
76 | } | |
77 | latency = jiffies_to_msecs(jiffies - lpfc_cmd->start_time); | |
78 | ||
79 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
80 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
81 | phba->bucket_step; | |
82 | if (i >= LPFC_MAX_BUCKET_COUNT) | |
83 | i = LPFC_MAX_BUCKET_COUNT; | |
84 | } else { | |
85 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
86 | if (latency <= (phba->bucket_base + | |
87 | ((1<<i)*phba->bucket_step))) | |
88 | break; | |
89 | } | |
90 | ||
91 | pnode->lat_data[i].cmd_count++; | |
92 | spin_unlock_irqrestore(shost->host_lock, flags); | |
93 | } | |
94 | ||
ea2151b4 JS |
95 | /** |
96 | * lpfc_send_sdev_queuedepth_change_event: Posts a queuedepth change | |
97 | * event. | |
98 | * @phba: Pointer to HBA context object. | |
99 | * @vport: Pointer to vport object. | |
100 | * @ndlp: Pointer to FC node associated with the target. | |
101 | * @lun: Lun number of the scsi device. | |
102 | * @old_val: Old value of the queue depth. | |
103 | * @new_val: New value of the queue depth. | |
104 | * | |
105 | * This function sends an event to the mgmt application indicating | |
106 | * there is a change in the scsi device queue depth. | |
107 | **/ | |
108 | static void | |
109 | lpfc_send_sdev_queuedepth_change_event(struct lpfc_hba *phba, | |
110 | struct lpfc_vport *vport, | |
111 | struct lpfc_nodelist *ndlp, | |
112 | uint32_t lun, | |
113 | uint32_t old_val, | |
114 | uint32_t new_val) | |
115 | { | |
116 | struct lpfc_fast_path_event *fast_path_evt; | |
117 | unsigned long flags; | |
118 | ||
119 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
120 | if (!fast_path_evt) | |
121 | return; | |
122 | ||
123 | fast_path_evt->un.queue_depth_evt.scsi_event.event_type = | |
124 | FC_REG_SCSI_EVENT; | |
125 | fast_path_evt->un.queue_depth_evt.scsi_event.subcategory = | |
126 | LPFC_EVENT_VARQUEDEPTH; | |
127 | ||
128 | /* Report all luns with change in queue depth */ | |
129 | fast_path_evt->un.queue_depth_evt.scsi_event.lun = lun; | |
130 | if (ndlp && NLP_CHK_NODE_ACT(ndlp)) { | |
131 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwpn, | |
132 | &ndlp->nlp_portname, sizeof(struct lpfc_name)); | |
133 | memcpy(&fast_path_evt->un.queue_depth_evt.scsi_event.wwnn, | |
134 | &ndlp->nlp_nodename, sizeof(struct lpfc_name)); | |
135 | } | |
136 | ||
137 | fast_path_evt->un.queue_depth_evt.oldval = old_val; | |
138 | fast_path_evt->un.queue_depth_evt.newval = new_val; | |
139 | fast_path_evt->vport = vport; | |
140 | ||
141 | fast_path_evt->work_evt.evt = LPFC_EVT_FASTPATH_MGMT_EVT; | |
142 | spin_lock_irqsave(&phba->hbalock, flags); | |
143 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
144 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
145 | lpfc_worker_wake_up(phba); | |
146 | ||
147 | return; | |
148 | } | |
149 | ||
9bad7671 JS |
150 | /** |
151 | * lpfc_adjust_queue_depth: Post RAMP_DOWN_QUEUE event for worker thread. | |
152 | * @phba: The Hba for which this call is being executed. | |
153 | * | |
154 | * This routine is called when there is resource error in driver or firmware. | |
155 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
156 | * posts at most 1 event each second. This routine wakes up worker thread of | |
157 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
158 | * | |
159 | * This routine should be called with no lock held. | |
160 | **/ | |
92d7f7b0 JS |
161 | void |
162 | lpfc_adjust_queue_depth(struct lpfc_hba *phba) | |
163 | { | |
164 | unsigned long flags; | |
5e9d9b82 | 165 | uint32_t evt_posted; |
92d7f7b0 JS |
166 | |
167 | spin_lock_irqsave(&phba->hbalock, flags); | |
168 | atomic_inc(&phba->num_rsrc_err); | |
169 | phba->last_rsrc_error_time = jiffies; | |
170 | ||
171 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
172 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
173 | return; | |
174 | } | |
175 | ||
176 | phba->last_ramp_down_time = jiffies; | |
177 | ||
178 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
179 | ||
180 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
181 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
182 | if (!evt_posted) | |
92d7f7b0 | 183 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
184 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
185 | ||
5e9d9b82 JS |
186 | if (!evt_posted) |
187 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
188 | return; |
189 | } | |
190 | ||
9bad7671 JS |
191 | /** |
192 | * lpfc_rampup_queue_depth: Post RAMP_UP_QUEUE event for worker thread. | |
193 | * @phba: The Hba for which this call is being executed. | |
194 | * | |
195 | * This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine | |
196 | * post at most 1 event every 5 minute after last_ramp_up_time or | |
197 | * last_rsrc_error_time. This routine wakes up worker thread of @phba | |
198 | * to process WORKER_RAM_DOWN_EVENT event. | |
199 | * | |
200 | * This routine should be called with no lock held. | |
201 | **/ | |
92d7f7b0 | 202 | static inline void |
3de2a653 | 203 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
92d7f7b0 JS |
204 | struct scsi_device *sdev) |
205 | { | |
206 | unsigned long flags; | |
3de2a653 | 207 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 208 | uint32_t evt_posted; |
92d7f7b0 JS |
209 | atomic_inc(&phba->num_cmd_success); |
210 | ||
3de2a653 | 211 | if (vport->cfg_lun_queue_depth <= sdev->queue_depth) |
92d7f7b0 | 212 | return; |
92d7f7b0 JS |
213 | spin_lock_irqsave(&phba->hbalock, flags); |
214 | if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) || | |
215 | ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) { | |
216 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
217 | return; | |
218 | } | |
92d7f7b0 JS |
219 | phba->last_ramp_up_time = jiffies; |
220 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
221 | ||
222 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
223 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
224 | if (!evt_posted) | |
92d7f7b0 | 225 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
226 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
227 | ||
5e9d9b82 JS |
228 | if (!evt_posted) |
229 | lpfc_worker_wake_up(phba); | |
230 | return; | |
92d7f7b0 JS |
231 | } |
232 | ||
9bad7671 JS |
233 | /** |
234 | * lpfc_ramp_down_queue_handler: WORKER_RAMP_DOWN_QUEUE event handler. | |
235 | * @phba: The Hba for which this call is being executed. | |
236 | * | |
237 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
238 | * thread.This routine reduces queue depth for all scsi device on each vport | |
239 | * associated with @phba. | |
240 | **/ | |
92d7f7b0 JS |
241 | void |
242 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
243 | { | |
549e55cd JS |
244 | struct lpfc_vport **vports; |
245 | struct Scsi_Host *shost; | |
92d7f7b0 | 246 | struct scsi_device *sdev; |
ea2151b4 | 247 | unsigned long new_queue_depth, old_queue_depth; |
92d7f7b0 | 248 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 249 | int i; |
ea2151b4 | 250 | struct lpfc_rport_data *rdata; |
92d7f7b0 JS |
251 | |
252 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
253 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
254 | ||
549e55cd JS |
255 | vports = lpfc_create_vport_work_array(phba); |
256 | if (vports != NULL) | |
09372820 | 257 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
258 | shost = lpfc_shost_from_vport(vports[i]); |
259 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 260 | new_queue_depth = |
549e55cd JS |
261 | sdev->queue_depth * num_rsrc_err / |
262 | (num_rsrc_err + num_cmd_success); | |
263 | if (!new_queue_depth) | |
264 | new_queue_depth = sdev->queue_depth - 1; | |
265 | else | |
266 | new_queue_depth = sdev->queue_depth - | |
267 | new_queue_depth; | |
ea2151b4 | 268 | old_queue_depth = sdev->queue_depth; |
549e55cd JS |
269 | if (sdev->ordered_tags) |
270 | scsi_adjust_queue_depth(sdev, | |
271 | MSG_ORDERED_TAG, | |
272 | new_queue_depth); | |
273 | else | |
274 | scsi_adjust_queue_depth(sdev, | |
275 | MSG_SIMPLE_TAG, | |
276 | new_queue_depth); | |
ea2151b4 JS |
277 | rdata = sdev->hostdata; |
278 | if (rdata) | |
279 | lpfc_send_sdev_queuedepth_change_event( | |
280 | phba, vports[i], | |
281 | rdata->pnode, | |
282 | sdev->lun, old_queue_depth, | |
283 | new_queue_depth); | |
549e55cd | 284 | } |
92d7f7b0 | 285 | } |
09372820 | 286 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
287 | atomic_set(&phba->num_rsrc_err, 0); |
288 | atomic_set(&phba->num_cmd_success, 0); | |
289 | } | |
290 | ||
9bad7671 JS |
291 | /** |
292 | * lpfc_ramp_up_queue_handler: WORKER_RAMP_UP_QUEUE event handler. | |
293 | * @phba: The Hba for which this call is being executed. | |
294 | * | |
295 | * This routine is called to process WORKER_RAMP_UP_QUEUE event for worker | |
296 | * thread.This routine increases queue depth for all scsi device on each vport | |
297 | * associated with @phba by 1. This routine also sets @phba num_rsrc_err and | |
298 | * num_cmd_success to zero. | |
299 | **/ | |
92d7f7b0 JS |
300 | void |
301 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
302 | { | |
549e55cd JS |
303 | struct lpfc_vport **vports; |
304 | struct Scsi_Host *shost; | |
92d7f7b0 | 305 | struct scsi_device *sdev; |
549e55cd | 306 | int i; |
ea2151b4 | 307 | struct lpfc_rport_data *rdata; |
549e55cd JS |
308 | |
309 | vports = lpfc_create_vport_work_array(phba); | |
310 | if (vports != NULL) | |
09372820 | 311 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
312 | shost = lpfc_shost_from_vport(vports[i]); |
313 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
314 | if (vports[i]->cfg_lun_queue_depth <= |
315 | sdev->queue_depth) | |
316 | continue; | |
549e55cd JS |
317 | if (sdev->ordered_tags) |
318 | scsi_adjust_queue_depth(sdev, | |
319 | MSG_ORDERED_TAG, | |
320 | sdev->queue_depth+1); | |
321 | else | |
322 | scsi_adjust_queue_depth(sdev, | |
323 | MSG_SIMPLE_TAG, | |
324 | sdev->queue_depth+1); | |
ea2151b4 JS |
325 | rdata = sdev->hostdata; |
326 | if (rdata) | |
327 | lpfc_send_sdev_queuedepth_change_event( | |
328 | phba, vports[i], | |
329 | rdata->pnode, | |
330 | sdev->lun, | |
331 | sdev->queue_depth - 1, | |
332 | sdev->queue_depth); | |
549e55cd | 333 | } |
92d7f7b0 | 334 | } |
09372820 | 335 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
336 | atomic_set(&phba->num_rsrc_err, 0); |
337 | atomic_set(&phba->num_cmd_success, 0); | |
338 | } | |
339 | ||
a8e497d5 JS |
340 | /** |
341 | * lpfc_scsi_dev_block: set all scsi hosts to block state. | |
342 | * @phba: Pointer to HBA context object. | |
343 | * | |
344 | * This function walks vport list and set each SCSI host to block state | |
345 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
346 | * with EEH when device's PCI slot has been permanently disabled. | |
347 | **/ | |
348 | void | |
349 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
350 | { | |
351 | struct lpfc_vport **vports; | |
352 | struct Scsi_Host *shost; | |
353 | struct scsi_device *sdev; | |
354 | struct fc_rport *rport; | |
355 | int i; | |
356 | ||
357 | vports = lpfc_create_vport_work_array(phba); | |
358 | if (vports != NULL) | |
359 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { | |
360 | shost = lpfc_shost_from_vport(vports[i]); | |
361 | shost_for_each_device(sdev, shost) { | |
362 | rport = starget_to_rport(scsi_target(sdev)); | |
363 | fc_remote_port_delete(rport); | |
364 | } | |
365 | } | |
366 | lpfc_destroy_vport_work_array(phba, vports); | |
367 | } | |
368 | ||
9bad7671 JS |
369 | /** |
370 | * lpfc_new_scsi_buf: Scsi buffer allocator. | |
371 | * @vport: The virtual port for which this call being executed. | |
372 | * | |
dea3101e JB |
373 | * This routine allocates a scsi buffer, which contains all the necessary |
374 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
375 | * contains information to build the IOCB. The DMAable region contains | |
9bad7671 JS |
376 | * memory for the FCP CMND, FCP RSP, and the initial BPL. In addition to |
377 | * allocating memory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
dea3101e | 378 | * and the BPL BDE is setup in the IOCB. |
9bad7671 JS |
379 | * |
380 | * Return codes: | |
381 | * NULL - Error | |
382 | * Pointer to lpfc_scsi_buf data structure - Success | |
383 | **/ | |
dea3101e | 384 | static struct lpfc_scsi_buf * |
2e0fef85 | 385 | lpfc_new_scsi_buf(struct lpfc_vport *vport) |
dea3101e | 386 | { |
2e0fef85 | 387 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
388 | struct lpfc_scsi_buf *psb; |
389 | struct ulp_bde64 *bpl; | |
390 | IOCB_t *iocb; | |
34b02dcd JS |
391 | dma_addr_t pdma_phys_fcp_cmd; |
392 | dma_addr_t pdma_phys_fcp_rsp; | |
393 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 394 | uint16_t iotag; |
dea3101e | 395 | |
bbfbbbc1 | 396 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); |
dea3101e JB |
397 | if (!psb) |
398 | return NULL; | |
dea3101e JB |
399 | |
400 | /* | |
401 | * Get memory from the pci pool to map the virt space to pci bus space | |
402 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
403 | * struct fcp_rsp and the number of bde's necessary to support the | |
404 | * sg_tablesize. | |
405 | */ | |
406 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
407 | &psb->dma_handle); | |
408 | if (!psb->data) { | |
409 | kfree(psb); | |
410 | return NULL; | |
411 | } | |
412 | ||
413 | /* Initialize virtual ptrs to dma_buf region. */ | |
414 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
415 | ||
604a3e30 JB |
416 | /* Allocate iotag for psb->cur_iocbq. */ |
417 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
418 | if (iotag == 0) { | |
419 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
420 | psb->data, psb->dma_handle); | |
421 | kfree (psb); | |
422 | return NULL; | |
423 | } | |
0bd4ca25 | 424 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 425 | |
dea3101e JB |
426 | psb->fcp_cmnd = psb->data; |
427 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
428 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
429 | sizeof(struct fcp_rsp); | |
430 | ||
431 | /* Initialize local short-hand pointers. */ | |
432 | bpl = psb->fcp_bpl; | |
34b02dcd JS |
433 | pdma_phys_fcp_cmd = psb->dma_handle; |
434 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
435 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
436 | sizeof(struct fcp_rsp); | |
dea3101e JB |
437 | |
438 | /* | |
439 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
440 | * list bdes. Initialize the first two and leave the rest for | |
441 | * queuecommand. | |
442 | */ | |
34b02dcd JS |
443 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); |
444 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
445 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
446 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
447 | bpl[0].tus.w = le32_to_cpu(bpl->tus.w); | |
dea3101e JB |
448 | |
449 | /* Setup the physical region for the FCP RSP */ | |
34b02dcd JS |
450 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); |
451 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
452 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
453 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
454 | bpl[1].tus.w = le32_to_cpu(bpl->tus.w); | |
dea3101e JB |
455 | |
456 | /* | |
457 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
458 | * initialize it with all known data now. | |
459 | */ | |
dea3101e JB |
460 | iocb = &psb->cur_iocbq.iocb; |
461 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
34b02dcd JS |
462 | if (phba->sli_rev == 3) { |
463 | /* fill in immediate fcp command BDE */ | |
464 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
465 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
466 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
467 | unsli3.fcp_ext.icd); | |
468 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
469 | iocb->ulpBdeCount = 0; | |
470 | iocb->ulpLe = 0; | |
471 | /* fill in responce BDE */ | |
472 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
473 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
474 | sizeof(struct fcp_rsp); | |
475 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
476 | putPaddrLow(pdma_phys_fcp_rsp); | |
477 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
478 | putPaddrHigh(pdma_phys_fcp_rsp); | |
479 | } else { | |
480 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
481 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
482 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_bpl); | |
483 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_bpl); | |
484 | iocb->ulpBdeCount = 1; | |
485 | iocb->ulpLe = 1; | |
486 | } | |
dea3101e JB |
487 | iocb->ulpClass = CLASS3; |
488 | ||
489 | return psb; | |
490 | } | |
491 | ||
9bad7671 JS |
492 | /** |
493 | * lpfc_get_scsi_buf: Get a scsi buffer from lpfc_scsi_buf_list list of Hba. | |
494 | * @phba: The Hba for which this call is being executed. | |
495 | * | |
496 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
497 | * and returns to caller. | |
498 | * | |
499 | * Return codes: | |
500 | * NULL - Error | |
501 | * Pointer to lpfc_scsi_buf - Success | |
502 | **/ | |
455c53ec | 503 | static struct lpfc_scsi_buf* |
875fbdfe | 504 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 505 | { |
0bd4ca25 JSEC |
506 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
507 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 508 | unsigned long iflag = 0; |
0bd4ca25 | 509 | |
875fbdfe | 510 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 511 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
512 | if (lpfc_cmd) { |
513 | lpfc_cmd->seg_cnt = 0; | |
514 | lpfc_cmd->nonsg_phys = 0; | |
515 | } | |
875fbdfe | 516 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
517 | return lpfc_cmd; |
518 | } | |
dea3101e | 519 | |
9bad7671 JS |
520 | /** |
521 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba lpfc_scsi_buf_list list. | |
522 | * @phba: The Hba for which this call is being executed. | |
523 | * @psb: The scsi buffer which is being released. | |
524 | * | |
525 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
526 | * lpfc_scsi_buf_list list. | |
527 | **/ | |
0bd4ca25 | 528 | static void |
92d7f7b0 | 529 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 530 | { |
875fbdfe | 531 | unsigned long iflag = 0; |
dea3101e | 532 | |
875fbdfe | 533 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 534 | psb->pCmd = NULL; |
dea3101e | 535 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 536 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e JB |
537 | } |
538 | ||
9bad7671 JS |
539 | /** |
540 | * lpfc_scsi_prep_dma_buf: Routine to do DMA mapping for scsi buffer. | |
541 | * @phba: The Hba for which this call is being executed. | |
542 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
543 | * | |
544 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
545 | * field of @lpfc_cmd. This routine scans through sg elements and format the | |
546 | * bdea. This routine also initializes all IOCB fields which are dependent on | |
547 | * scsi command request buffer. | |
548 | * | |
549 | * Return codes: | |
550 | * 1 - Error | |
551 | * 0 - Success | |
552 | **/ | |
dea3101e | 553 | static int |
92d7f7b0 | 554 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e JB |
555 | { |
556 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
557 | struct scatterlist *sgel = NULL; | |
558 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
559 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
560 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
34b02dcd | 561 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 562 | dma_addr_t physaddr; |
34b02dcd | 563 | uint32_t num_bde = 0; |
a0b4f78f | 564 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e JB |
565 | |
566 | /* | |
567 | * There are three possibilities here - use scatter-gather segment, use | |
568 | * the single mapping, or neither. Start the lpfc command prep by | |
569 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
570 | * data bde entry. | |
571 | */ | |
572 | bpl += 2; | |
c59fd9eb | 573 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
574 | /* |
575 | * The driver stores the segment count returned from pci_map_sg | |
576 | * because this a count of dma-mappings used to map the use_sg | |
577 | * pages. They are not guaranteed to be the same for those | |
578 | * architectures that implement an IOMMU. | |
579 | */ | |
dea3101e | 580 | |
c59fd9eb FT |
581 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
582 | scsi_sg_count(scsi_cmnd), datadir); | |
583 | if (unlikely(!nseg)) | |
584 | return 1; | |
585 | ||
a0b4f78f | 586 | lpfc_cmd->seg_cnt = nseg; |
dea3101e JB |
587 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
588 | printk(KERN_ERR "%s: Too many sg segments from " | |
589 | "dma_map_sg. Config %d, seg_cnt %d", | |
cadbd4a5 | 590 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 591 | lpfc_cmd->seg_cnt); |
a0b4f78f | 592 | scsi_dma_unmap(scsi_cmnd); |
dea3101e JB |
593 | return 1; |
594 | } | |
595 | ||
596 | /* | |
597 | * The driver established a maximum scatter-gather segment count | |
598 | * during probe that limits the number of sg elements in any | |
599 | * single scsi command. Just run through the seg_cnt and format | |
600 | * the bde's. | |
34b02dcd JS |
601 | * When using SLI-3 the driver will try to fit all the BDEs into |
602 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
603 | * does for SLI-2 mode. | |
dea3101e | 604 | */ |
34b02dcd | 605 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 606 | physaddr = sg_dma_address(sgel); |
34b02dcd JS |
607 | if (phba->sli_rev == 3 && |
608 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { | |
609 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
610 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
611 | data_bde->addrLow = putPaddrLow(physaddr); | |
612 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
613 | data_bde++; | |
614 | } else { | |
615 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
616 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
617 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
618 | bpl->addrLow = | |
619 | le32_to_cpu(putPaddrLow(physaddr)); | |
620 | bpl->addrHigh = | |
621 | le32_to_cpu(putPaddrHigh(physaddr)); | |
622 | bpl++; | |
623 | } | |
dea3101e | 624 | } |
c59fd9eb | 625 | } |
dea3101e JB |
626 | |
627 | /* | |
628 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
629 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
630 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
631 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 632 | */ |
34b02dcd JS |
633 | if (phba->sli_rev == 3) { |
634 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { | |
635 | /* | |
636 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
637 | * This I/O has more than 3 BDE so the 1st data bde will | |
638 | * be a BPL that is filled in here. | |
639 | */ | |
640 | physaddr = lpfc_cmd->dma_handle; | |
641 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
642 | data_bde->tus.f.bdeSize = (num_bde * | |
643 | sizeof(struct ulp_bde64)); | |
644 | physaddr += (sizeof(struct fcp_cmnd) + | |
645 | sizeof(struct fcp_rsp) + | |
646 | (2 * sizeof(struct ulp_bde64))); | |
647 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
648 | data_bde->addrLow = putPaddrLow(physaddr); | |
649 | /* ebde count includes the responce bde and data bpl */ | |
650 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; | |
651 | } else { | |
652 | /* ebde count includes the responce bde and data bdes */ | |
653 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); | |
654 | } | |
655 | } else { | |
656 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
657 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
658 | } | |
09372820 | 659 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
dea3101e JB |
660 | return 0; |
661 | } | |
662 | ||
ea2151b4 JS |
663 | /** |
664 | * lpfc_send_scsi_error_event: Posts an event when there is SCSI error. | |
665 | * @phba: Pointer to hba context object. | |
666 | * @vport: Pointer to vport object. | |
667 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
668 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
669 | * | |
670 | * This function posts an event when there is a SCSI command reporting | |
671 | * error from the scsi device. | |
672 | **/ | |
673 | static void | |
674 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
675 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
676 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
677 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
678 | uint32_t resp_info = fcprsp->rspStatus2; | |
679 | uint32_t scsi_status = fcprsp->rspStatus3; | |
680 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
681 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
682 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
683 | unsigned long flags; | |
684 | ||
685 | /* If there is queuefull or busy condition send a scsi event */ | |
686 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
687 | (cmnd->result == SAM_STAT_BUSY)) { | |
688 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
689 | if (!fast_path_evt) | |
690 | return; | |
691 | fast_path_evt->un.scsi_evt.event_type = | |
692 | FC_REG_SCSI_EVENT; | |
693 | fast_path_evt->un.scsi_evt.subcategory = | |
694 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
695 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
696 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
697 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
698 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
699 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
700 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
701 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
702 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
703 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
704 | if (!fast_path_evt) | |
705 | return; | |
706 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
707 | FC_REG_SCSI_EVENT; | |
708 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
709 | LPFC_EVENT_CHECK_COND; | |
710 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
711 | cmnd->device->lun; | |
712 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
713 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
714 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
715 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
716 | fast_path_evt->un.check_cond_evt.sense_key = | |
717 | cmnd->sense_buffer[2] & 0xf; | |
718 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
719 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
720 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
721 | fcpi_parm && | |
722 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
723 | ((scsi_status == SAM_STAT_GOOD) && | |
724 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
725 | /* | |
726 | * If status is good or resid does not match with fcp_param and | |
727 | * there is valid fcpi_parm, then there is a read_check error | |
728 | */ | |
729 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
730 | if (!fast_path_evt) | |
731 | return; | |
732 | fast_path_evt->un.read_check_error.header.event_type = | |
733 | FC_REG_FABRIC_EVENT; | |
734 | fast_path_evt->un.read_check_error.header.subcategory = | |
735 | LPFC_EVENT_FCPRDCHKERR; | |
736 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
737 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
738 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
739 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
740 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
741 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
742 | fast_path_evt->un.read_check_error.fcpiparam = | |
743 | fcpi_parm; | |
744 | } else | |
745 | return; | |
746 | ||
747 | fast_path_evt->vport = vport; | |
748 | spin_lock_irqsave(&phba->hbalock, flags); | |
749 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
750 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
751 | lpfc_worker_wake_up(phba); | |
752 | return; | |
753 | } | |
9bad7671 JS |
754 | |
755 | /** | |
756 | * lpfc_scsi_unprep_dma_buf: Routine to un-map DMA mapping of scatter gather. | |
757 | * @phba: The Hba for which this call is being executed. | |
758 | * @psb: The scsi buffer which is going to be un-mapped. | |
759 | * | |
760 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
761 | * field of @lpfc_cmd. | |
762 | **/ | |
bcf4dbfa JS |
763 | static void |
764 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
765 | { | |
766 | /* | |
767 | * There are only two special cases to consider. (1) the scsi command | |
768 | * requested scatter-gather usage or (2) the scsi command allocated | |
769 | * a request buffer, but did not request use_sg. There is a third | |
770 | * case, but it does not require resource deallocation. | |
771 | */ | |
a0b4f78f FT |
772 | if (psb->seg_cnt > 0) |
773 | scsi_dma_unmap(psb->pCmd); | |
bcf4dbfa JS |
774 | } |
775 | ||
9bad7671 JS |
776 | /** |
777 | * lpfc_handler_fcp_err: FCP response handler. | |
778 | * @vport: The virtual port for which this call is being executed. | |
779 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
780 | * @rsp_iocb: The response IOCB which contains FCP error. | |
781 | * | |
782 | * This routine is called to process response IOCB with status field | |
783 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
784 | * based upon SCSI and FCP error. | |
785 | **/ | |
dea3101e | 786 | static void |
2e0fef85 JS |
787 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
788 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e JB |
789 | { |
790 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
791 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
792 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 793 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e JB |
794 | uint32_t resp_info = fcprsp->rspStatus2; |
795 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 796 | uint32_t *lp; |
dea3101e JB |
797 | uint32_t host_status = DID_OK; |
798 | uint32_t rsplen = 0; | |
c7743956 | 799 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 800 | |
ea2151b4 | 801 | |
dea3101e JB |
802 | /* |
803 | * If this is a task management command, there is no | |
804 | * scsi packet associated with this lpfc_cmd. The driver | |
805 | * consumes it. | |
806 | */ | |
807 | if (fcpcmd->fcpCntl2) { | |
808 | scsi_status = 0; | |
809 | goto out; | |
810 | } | |
811 | ||
c7743956 JS |
812 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
813 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
814 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
815 | snslen = SCSI_SENSE_BUFFERSIZE; | |
816 | ||
817 | if (resp_info & RSP_LEN_VALID) | |
818 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
819 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
820 | } | |
821 | lp = (uint32_t *)cmnd->sense_buffer; | |
822 | ||
823 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
824 | logit = LOG_FCP; | |
825 | ||
e8b62011 JS |
826 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
827 | "0730 FCP command x%x failed: x%x SNS x%x x%x " | |
828 | "Data: x%x x%x x%x x%x x%x\n", | |
829 | cmnd->cmnd[0], scsi_status, | |
830 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
831 | be32_to_cpu(fcprsp->rspResId), | |
832 | be32_to_cpu(fcprsp->rspSnsLen), | |
833 | be32_to_cpu(fcprsp->rspRspLen), | |
834 | fcprsp->rspInfo3); | |
dea3101e JB |
835 | |
836 | if (resp_info & RSP_LEN_VALID) { | |
837 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
838 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
839 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
840 | host_status = DID_ERROR; | |
841 | goto out; | |
842 | } | |
843 | } | |
844 | ||
a0b4f78f | 845 | scsi_set_resid(cmnd, 0); |
dea3101e | 846 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 847 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 848 | |
e8b62011 JS |
849 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
850 | "0716 FCP Read Underrun, expected %d, " | |
851 | "residual %d Data: x%x x%x x%x\n", | |
852 | be32_to_cpu(fcpcmd->fcpDl), | |
853 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
854 | cmnd->underflow); | |
dea3101e | 855 | |
7054a606 JS |
856 | /* |
857 | * If there is an under run check if under run reported by | |
858 | * storage array is same as the under run reported by HBA. | |
859 | * If this is not same, there is a dropped frame. | |
860 | */ | |
861 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
862 | fcpi_parm && | |
a0b4f78f | 863 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
864 | lpfc_printf_vlog(vport, KERN_WARNING, |
865 | LOG_FCP | LOG_FCP_ERROR, | |
866 | "0735 FCP Read Check Error " | |
867 | "and Underrun Data: x%x x%x x%x x%x\n", | |
868 | be32_to_cpu(fcpcmd->fcpDl), | |
869 | scsi_get_resid(cmnd), fcpi_parm, | |
870 | cmnd->cmnd[0]); | |
a0b4f78f | 871 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
872 | host_status = DID_ERROR; |
873 | } | |
dea3101e JB |
874 | /* |
875 | * The cmnd->underflow is the minimum number of bytes that must | |
876 | * be transfered for this command. Provided a sense condition | |
877 | * is not present, make sure the actual amount transferred is at | |
878 | * least the underflow value or fail. | |
879 | */ | |
880 | if (!(resp_info & SNS_LEN_VALID) && | |
881 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
882 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
883 | < cmnd->underflow)) { | |
e8b62011 JS |
884 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
885 | "0717 FCP command x%x residual " | |
886 | "underrun converted to error " | |
887 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 888 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 889 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e JB |
890 | host_status = DID_ERROR; |
891 | } | |
892 | } else if (resp_info & RESID_OVER) { | |
e8b62011 JS |
893 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
894 | "0720 FCP command x%x residual overrun error. " | |
895 | "Data: x%x x%x \n", cmnd->cmnd[0], | |
896 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); | |
dea3101e JB |
897 | host_status = DID_ERROR; |
898 | ||
899 | /* | |
900 | * Check SLI validation that all the transfer was actually done | |
901 | * (fcpi_parm should be zero). Apply check only to reads. | |
902 | */ | |
903 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
904 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 JS |
905 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
906 | "0734 FCP Read Check Error Data: " | |
907 | "x%x x%x x%x x%x\n", | |
908 | be32_to_cpu(fcpcmd->fcpDl), | |
909 | be32_to_cpu(fcprsp->rspResId), | |
910 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 911 | host_status = DID_ERROR; |
a0b4f78f | 912 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e JB |
913 | } |
914 | ||
915 | out: | |
916 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 917 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e JB |
918 | } |
919 | ||
9bad7671 JS |
920 | /** |
921 | * lpfc_scsi_cmd_iocb_cmpl: Scsi cmnd IOCB completion routine. | |
922 | * @phba: The Hba for which this call is being executed. | |
923 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
924 | * @pIocbOut: The response IOCBQ for the scsi cmnd . | |
925 | * | |
926 | * This routine assigns scsi command result by looking into response IOCB | |
927 | * status field appropriately. This routine handles QUEUE FULL condition as | |
928 | * well by ramping down device queue depth. | |
929 | **/ | |
dea3101e JB |
930 | static void |
931 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
932 | struct lpfc_iocbq *pIocbOut) | |
933 | { | |
934 | struct lpfc_scsi_buf *lpfc_cmd = | |
935 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 936 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e JB |
937 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
938 | struct lpfc_nodelist *pnode = rdata->pnode; | |
939 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 JSEC |
940 | int result; |
941 | struct scsi_device *sdev, *tmp_sdev; | |
942 | int depth = 0; | |
fa61a54e | 943 | unsigned long flags; |
ea2151b4 | 944 | struct lpfc_fast_path_event *fast_path_evt; |
dea3101e JB |
945 | |
946 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
947 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
109f6ed0 JS |
948 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
949 | atomic_dec(&pnode->cmd_pending); | |
dea3101e JB |
950 | |
951 | if (lpfc_cmd->status) { | |
952 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
953 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
954 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
955 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
956 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
957 | ||
e8b62011 JS |
958 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
959 | "0729 FCP cmd x%x failed <%d/%d> " | |
960 | "status: x%x result: x%x Data: x%x x%x\n", | |
961 | cmd->cmnd[0], | |
962 | cmd->device ? cmd->device->id : 0xffff, | |
963 | cmd->device ? cmd->device->lun : 0xffff, | |
964 | lpfc_cmd->status, lpfc_cmd->result, | |
965 | pIocbOut->iocb.ulpContext, | |
966 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e JB |
967 | |
968 | switch (lpfc_cmd->status) { | |
969 | case IOSTAT_FCP_RSP_ERROR: | |
970 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 971 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e JB |
972 | break; |
973 | case IOSTAT_NPORT_BSY: | |
974 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 975 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
976 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
977 | if (!fast_path_evt) | |
978 | break; | |
979 | fast_path_evt->un.fabric_evt.event_type = | |
980 | FC_REG_FABRIC_EVENT; | |
981 | fast_path_evt->un.fabric_evt.subcategory = | |
982 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
983 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
984 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
985 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
986 | &pnode->nlp_portname, | |
987 | sizeof(struct lpfc_name)); | |
988 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
989 | &pnode->nlp_nodename, | |
990 | sizeof(struct lpfc_name)); | |
991 | } | |
992 | fast_path_evt->vport = vport; | |
993 | fast_path_evt->work_evt.evt = | |
994 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
995 | spin_lock_irqsave(&phba->hbalock, flags); | |
996 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
997 | &phba->work_list); | |
998 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
999 | lpfc_worker_wake_up(phba); | |
dea3101e | 1000 | break; |
92d7f7b0 | 1001 | case IOSTAT_LOCAL_REJECT: |
d7c255b2 | 1002 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 1003 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
d7c255b2 | 1004 | lpfc_cmd->result == IOERR_ABORT_REQUESTED) { |
92d7f7b0 | 1005 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb JS |
1006 | break; |
1007 | } /* else: fall through */ | |
dea3101e JB |
1008 | default: |
1009 | cmd->result = ScsiResult(DID_ERROR, 0); | |
1010 | break; | |
1011 | } | |
1012 | ||
58da1ffb | 1013 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 1014 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
1015 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
1016 | SAM_STAT_BUSY); | |
dea3101e JB |
1017 | } else { |
1018 | cmd->result = ScsiResult(DID_OK, 0); | |
1019 | } | |
1020 | ||
1021 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
1022 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
1023 | ||
e8b62011 JS |
1024 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1025 | "0710 Iodone <%d/%d> cmd %p, error " | |
1026 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
1027 | cmd->device->id, cmd->device->lun, cmd, | |
1028 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
1029 | scsi_get_resid(cmd)); | |
dea3101e JB |
1030 | } |
1031 | ||
ea2151b4 | 1032 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 JSEC |
1033 | result = cmd->result; |
1034 | sdev = cmd->device; | |
977b5a0a JS |
1035 | if (vport->cfg_max_scsicmpl_time && |
1036 | time_after(jiffies, lpfc_cmd->start_time + | |
1037 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
1038 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
109f6ed0 JS |
1039 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
1040 | if (pnode->cmd_qdepth > | |
1041 | atomic_read(&pnode->cmd_pending) && | |
1042 | (atomic_read(&pnode->cmd_pending) > | |
1043 | LPFC_MIN_TGT_QDEPTH) && | |
1044 | ((cmd->cmnd[0] == READ_10) || | |
1045 | (cmd->cmnd[0] == WRITE_10))) | |
1046 | pnode->cmd_qdepth = | |
1047 | atomic_read(&pnode->cmd_pending); | |
1048 | ||
1049 | pnode->last_change_time = jiffies; | |
1050 | } | |
977b5a0a | 1051 | spin_unlock_irqrestore(sdev->host->host_lock, flags); |
109f6ed0 JS |
1052 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
1053 | if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) && | |
977b5a0a | 1054 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 JS |
1055 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
1056 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
1057 | pnode->cmd_qdepth += pnode->cmd_qdepth * | |
1058 | LPFC_TGTQ_RAMPUP_PCENT / 100; | |
1059 | if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH) | |
1060 | pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH; | |
1061 | pnode->last_change_time = jiffies; | |
1062 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
1063 | } | |
977b5a0a JS |
1064 | } |
1065 | ||
1dcb58e5 | 1066 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
1067 | cmd->scsi_done(cmd); |
1068 | ||
b808608b | 1069 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
1070 | /* |
1071 | * If there is a thread waiting for command completion | |
1072 | * wake up the thread. | |
1073 | */ | |
1074 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 1075 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
1076 | if (lpfc_cmd->waitq) |
1077 | wake_up(lpfc_cmd->waitq); | |
1078 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
b808608b JW |
1079 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
1080 | return; | |
1081 | } | |
1082 | ||
92d7f7b0 JS |
1083 | |
1084 | if (!result) | |
3de2a653 | 1085 | lpfc_rampup_queue_depth(vport, sdev); |
92d7f7b0 | 1086 | |
58da1ffb | 1087 | if (!result && pnode && NLP_CHK_NODE_ACT(pnode) && |
445cf4f4 JSEC |
1088 | ((jiffies - pnode->last_ramp_up_time) > |
1089 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
1090 | ((jiffies - pnode->last_q_full_time) > | |
1091 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
3de2a653 | 1092 | (vport->cfg_lun_queue_depth > sdev->queue_depth)) { |
445cf4f4 | 1093 | shost_for_each_device(tmp_sdev, sdev->host) { |
3de2a653 | 1094 | if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){ |
445cf4f4 JSEC |
1095 | if (tmp_sdev->id != sdev->id) |
1096 | continue; | |
1097 | if (tmp_sdev->ordered_tags) | |
1098 | scsi_adjust_queue_depth(tmp_sdev, | |
1099 | MSG_ORDERED_TAG, | |
1100 | tmp_sdev->queue_depth+1); | |
1101 | else | |
1102 | scsi_adjust_queue_depth(tmp_sdev, | |
1103 | MSG_SIMPLE_TAG, | |
1104 | tmp_sdev->queue_depth+1); | |
1105 | ||
1106 | pnode->last_ramp_up_time = jiffies; | |
1107 | } | |
1108 | } | |
ea2151b4 JS |
1109 | lpfc_send_sdev_queuedepth_change_event(phba, vport, pnode, |
1110 | 0xFFFFFFFF, | |
1111 | sdev->queue_depth - 1, sdev->queue_depth); | |
445cf4f4 JSEC |
1112 | } |
1113 | ||
1114 | /* | |
1115 | * Check for queue full. If the lun is reporting queue full, then | |
1116 | * back off the lun queue depth to prevent target overloads. | |
1117 | */ | |
58da1ffb JS |
1118 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
1119 | NLP_CHK_NODE_ACT(pnode)) { | |
445cf4f4 JSEC |
1120 | pnode->last_q_full_time = jiffies; |
1121 | ||
1122 | shost_for_each_device(tmp_sdev, sdev->host) { | |
1123 | if (tmp_sdev->id != sdev->id) | |
1124 | continue; | |
1125 | depth = scsi_track_queue_full(tmp_sdev, | |
1126 | tmp_sdev->queue_depth - 1); | |
1127 | } | |
1128 | /* | |
2e0fef85 | 1129 | * The queue depth cannot be lowered any more. |
445cf4f4 JSEC |
1130 | * Modify the returned error code to store |
1131 | * the final depth value set by | |
1132 | * scsi_track_queue_full. | |
1133 | */ | |
1134 | if (depth == -1) | |
1135 | depth = sdev->host->cmd_per_lun; | |
1136 | ||
1137 | if (depth) { | |
e8b62011 JS |
1138 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1139 | "0711 detected queue full - lun queue " | |
1140 | "depth adjusted to %d.\n", depth); | |
ea2151b4 JS |
1141 | lpfc_send_sdev_queuedepth_change_event(phba, vport, |
1142 | pnode, 0xFFFFFFFF, | |
1143 | depth+1, depth); | |
445cf4f4 JSEC |
1144 | } |
1145 | } | |
1146 | ||
fa61a54e JS |
1147 | /* |
1148 | * If there is a thread waiting for command completion | |
1149 | * wake up the thread. | |
1150 | */ | |
1151 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 1152 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
1153 | if (lpfc_cmd->waitq) |
1154 | wake_up(lpfc_cmd->waitq); | |
1155 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
1156 | ||
0bd4ca25 | 1157 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
1158 | } |
1159 | ||
34b02dcd JS |
1160 | /** |
1161 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB. | |
1162 | * @data: A pointer to the immediate command data portion of the IOCB. | |
1163 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
1164 | * | |
1165 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
1166 | * byte swapping the data to big endian format for transmission on the wire. | |
1167 | **/ | |
1168 | static void | |
1169 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
1170 | { | |
1171 | int i, j; | |
1172 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
1173 | i += sizeof(uint32_t), j++) { | |
1174 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
1175 | } | |
1176 | } | |
1177 | ||
9bad7671 JS |
1178 | /** |
1179 | * lpfc_scsi_prep_cmnd: Routine to convert scsi cmnd to FCP information unit. | |
1180 | * @vport: The virtual port for which this call is being executed. | |
1181 | * @lpfc_cmd: The scsi command which needs to send. | |
1182 | * @pnode: Pointer to lpfc_nodelist. | |
1183 | * | |
1184 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
1185 | * to transfer. | |
1186 | **/ | |
dea3101e | 1187 | static void |
2e0fef85 JS |
1188 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
1189 | struct lpfc_nodelist *pnode) | |
dea3101e | 1190 | { |
2e0fef85 | 1191 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
1192 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
1193 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1194 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
1195 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
1196 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 1197 | char tag[2]; |
dea3101e | 1198 | |
58da1ffb JS |
1199 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
1200 | return; | |
1201 | ||
dea3101e | 1202 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
1203 | /* clear task management bits */ |
1204 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 1205 | |
91886523 JSEC |
1206 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
1207 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e JB |
1208 | |
1209 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
1210 | ||
7e2b19fb JS |
1211 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
1212 | switch (tag[0]) { | |
dea3101e JB |
1213 | case HEAD_OF_QUEUE_TAG: |
1214 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
1215 | break; | |
1216 | case ORDERED_QUEUE_TAG: | |
1217 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
1218 | break; | |
1219 | default: | |
1220 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
1221 | break; | |
1222 | } | |
1223 | } else | |
1224 | fcp_cmnd->fcpCntl1 = 0; | |
1225 | ||
1226 | /* | |
1227 | * There are three possibilities here - use scatter-gather segment, use | |
1228 | * the single mapping, or neither. Start the lpfc command prep by | |
1229 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1230 | * data bde entry. | |
1231 | */ | |
a0b4f78f | 1232 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
1233 | if (datadir == DMA_TO_DEVICE) { |
1234 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
1235 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
1236 | iocb_cmd->ulpPU = 0; | |
1237 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
1238 | phba->fc4OutputRequests++; | |
1239 | } else { | |
1240 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
1241 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
a0b4f78f | 1242 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
dea3101e JB |
1243 | fcp_cmnd->fcpCntl3 = READ_DATA; |
1244 | phba->fc4InputRequests++; | |
1245 | } | |
1246 | } else { | |
1247 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
1248 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
1249 | iocb_cmd->ulpPU = 0; | |
1250 | fcp_cmnd->fcpCntl3 = 0; | |
1251 | phba->fc4ControlRequests++; | |
1252 | } | |
34b02dcd JS |
1253 | if (phba->sli_rev == 3) |
1254 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); | |
dea3101e JB |
1255 | /* |
1256 | * Finish initializing those IOCB fields that are independent | |
1257 | * of the scsi_cmnd request_buffer | |
1258 | */ | |
1259 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
1260 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
1261 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
1262 | else |
1263 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e JB |
1264 | |
1265 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
1266 | piocbq->context1 = lpfc_cmd; | |
1267 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
1268 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 1269 | piocbq->vport = vport; |
dea3101e JB |
1270 | } |
1271 | ||
9bad7671 JS |
1272 | /** |
1273 | * lpfc_scsi_prep_task_mgmt_cmnd: Convert scsi TM cmnd to FCP information unit. | |
1274 | * @vport: The virtual port for which this call is being executed. | |
1275 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
1276 | * @lun: Logical unit number. | |
1277 | * @task_mgmt_cmd: SCSI task management command. | |
1278 | * | |
1279 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd. | |
1280 | * | |
1281 | * Return codes: | |
1282 | * 0 - Error | |
1283 | * 1 - Success | |
1284 | **/ | |
dea3101e | 1285 | static int |
2e0fef85 | 1286 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 1287 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 1288 | unsigned int lun, |
dea3101e JB |
1289 | uint8_t task_mgmt_cmd) |
1290 | { | |
dea3101e JB |
1291 | struct lpfc_iocbq *piocbq; |
1292 | IOCB_t *piocb; | |
1293 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 1294 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e JB |
1295 | struct lpfc_nodelist *ndlp = rdata->pnode; |
1296 | ||
58da1ffb JS |
1297 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
1298 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 1299 | return 0; |
dea3101e | 1300 | |
dea3101e | 1301 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
1302 | piocbq->vport = vport; |
1303 | ||
dea3101e JB |
1304 | piocb = &piocbq->iocb; |
1305 | ||
1306 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
1307 | /* Clear out any old data in the FCP command area */ |
1308 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
1309 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 1310 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
34b02dcd JS |
1311 | if (vport->phba->sli_rev == 3) |
1312 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); | |
dea3101e | 1313 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e JB |
1314 | piocb->ulpContext = ndlp->nlp_rpi; |
1315 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
1316 | piocb->ulpFCP2Rcvy = 1; | |
1317 | } | |
1318 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
1319 | ||
1320 | /* ulpTimeout is only one byte */ | |
1321 | if (lpfc_cmd->timeout > 0xff) { | |
1322 | /* | |
1323 | * Do not timeout the command at the firmware level. | |
1324 | * The driver will provide the timeout mechanism. | |
1325 | */ | |
1326 | piocb->ulpTimeout = 0; | |
1327 | } else { | |
1328 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
1329 | } | |
1330 | ||
2e0fef85 | 1331 | return 1; |
dea3101e JB |
1332 | } |
1333 | ||
9bad7671 JS |
1334 | /** |
1335 | * lpc_taskmgmt_def_cmpl: IOCB completion routine for task management command. | |
1336 | * @phba: The Hba for which this call is being executed. | |
1337 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
1338 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
1339 | * | |
1340 | * This routine is IOCB completion routine for device reset and target reset | |
1341 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
1342 | **/ | |
7054a606 JS |
1343 | static void |
1344 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
1345 | struct lpfc_iocbq *cmdiocbq, | |
1346 | struct lpfc_iocbq *rspiocbq) | |
1347 | { | |
1348 | struct lpfc_scsi_buf *lpfc_cmd = | |
1349 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
1350 | if (lpfc_cmd) | |
1351 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1352 | return; | |
1353 | } | |
1354 | ||
9bad7671 JS |
1355 | /** |
1356 | * lpfc_scsi_tgt_reset: Target reset handler. | |
1357 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure | |
1358 | * @vport: The virtual port for which this call is being executed. | |
1359 | * @tgt_id: Target ID. | |
1360 | * @lun: Lun number. | |
1361 | * @rdata: Pointer to lpfc_rport_data. | |
1362 | * | |
1363 | * This routine issues a TARGET RESET iocb to reset a target with @tgt_id ID. | |
1364 | * | |
1365 | * Return Code: | |
1366 | * 0x2003 - Error | |
1367 | * 0x2002 - Success. | |
1368 | **/ | |
dea3101e | 1369 | static int |
2e0fef85 | 1370 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, |
420b630d JS |
1371 | unsigned tgt_id, unsigned int lun, |
1372 | struct lpfc_rport_data *rdata) | |
dea3101e | 1373 | { |
2e0fef85 | 1374 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 1375 | struct lpfc_iocbq *iocbq; |
0bd4ca25 | 1376 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 1377 | int ret; |
915caaaf | 1378 | int status; |
dea3101e | 1379 | |
58da1ffb | 1380 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
f5603511 JS |
1381 | return FAILED; |
1382 | ||
0b18ac42 | 1383 | lpfc_cmd->rdata = rdata; |
915caaaf | 1384 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, |
420b630d | 1385 | FCP_TARGET_RESET); |
915caaaf | 1386 | if (!status) |
dea3101e JB |
1387 | return FAILED; |
1388 | ||
dea3101e | 1389 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 JSEC |
1390 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
1391 | ||
dea3101e JB |
1392 | if (!iocbqrsp) |
1393 | return FAILED; | |
dea3101e | 1394 | |
0b18ac42 | 1395 | /* Issue Target Reset to TGT <num> */ |
e8b62011 JS |
1396 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1397 | "0702 Issue Target Reset to TGT %d Data: x%x x%x\n", | |
1398 | tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
915caaaf | 1399 | status = lpfc_sli_issue_iocb_wait(phba, |
68876920 JSEC |
1400 | &phba->sli.ring[phba->sli.fcp_ring], |
1401 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
915caaaf JS |
1402 | if (status != IOCB_SUCCESS) { |
1403 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 1404 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
1405 | ret = TIMEOUT_ERROR; |
1406 | } else | |
1407 | ret = FAILED; | |
dea3101e | 1408 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
dea3101e JB |
1409 | } else { |
1410 | ret = SUCCESS; | |
1411 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
1412 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
1413 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
1414 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
1415 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
1416 | } | |
1417 | ||
604a3e30 | 1418 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e JB |
1419 | return ret; |
1420 | } | |
1421 | ||
9bad7671 JS |
1422 | /** |
1423 | * lpfc_info: Info entry point of scsi_host_template data structure. | |
1424 | * @host: The scsi host for which this call is being executed. | |
1425 | * | |
1426 | * This routine provides module information about hba. | |
1427 | * | |
1428 | * Reutrn code: | |
1429 | * Pointer to char - Success. | |
1430 | **/ | |
dea3101e JB |
1431 | const char * |
1432 | lpfc_info(struct Scsi_Host *host) | |
1433 | { | |
2e0fef85 JS |
1434 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
1435 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
1436 | int len; |
1437 | static char lpfcinfobuf[384]; | |
1438 | ||
1439 | memset(lpfcinfobuf,0,384); | |
1440 | if (phba && phba->pcidev){ | |
1441 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
1442 | len = strlen(lpfcinfobuf); | |
1443 | snprintf(lpfcinfobuf + len, | |
1444 | 384-len, | |
1445 | " on PCI bus %02x device %02x irq %d", | |
1446 | phba->pcidev->bus->number, | |
1447 | phba->pcidev->devfn, | |
1448 | phba->pcidev->irq); | |
1449 | len = strlen(lpfcinfobuf); | |
1450 | if (phba->Port[0]) { | |
1451 | snprintf(lpfcinfobuf + len, | |
1452 | 384-len, | |
1453 | " port %s", | |
1454 | phba->Port); | |
1455 | } | |
1456 | } | |
1457 | return lpfcinfobuf; | |
1458 | } | |
1459 | ||
9bad7671 JS |
1460 | /** |
1461 | * lpfc_poll_rearm_time: Routine to modify fcp_poll timer of hba. | |
1462 | * @phba: The Hba for which this call is being executed. | |
1463 | * | |
1464 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
1465 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
1466 | **/ | |
875fbdfe JSEC |
1467 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
1468 | { | |
1469 | unsigned long poll_tmo_expires = | |
1470 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
1471 | ||
1472 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
1473 | mod_timer(&phba->fcp_poll_timer, | |
1474 | poll_tmo_expires); | |
1475 | } | |
1476 | ||
9bad7671 JS |
1477 | /** |
1478 | * lpfc_poll_start_timer: Routine to start fcp_poll_timer of HBA. | |
1479 | * @phba: The Hba for which this call is being executed. | |
1480 | * | |
1481 | * This routine starts the fcp_poll_timer of @phba. | |
1482 | **/ | |
875fbdfe JSEC |
1483 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
1484 | { | |
1485 | lpfc_poll_rearm_timer(phba); | |
1486 | } | |
1487 | ||
9bad7671 JS |
1488 | /** |
1489 | * lpfc_poll_timeout: Restart polling timer. | |
1490 | * @ptr: Map to lpfc_hba data structure pointer. | |
1491 | * | |
1492 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
1493 | * and FCP Ring interrupt is disable. | |
1494 | **/ | |
1495 | ||
875fbdfe JSEC |
1496 | void lpfc_poll_timeout(unsigned long ptr) |
1497 | { | |
2e0fef85 | 1498 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
1499 | |
1500 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
1501 | lpfc_sli_poll_fcp_ring (phba); | |
1502 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1503 | lpfc_poll_rearm_timer(phba); | |
1504 | } | |
875fbdfe JSEC |
1505 | } |
1506 | ||
9bad7671 JS |
1507 | /** |
1508 | * lpfc_queuecommand: Queuecommand entry point of Scsi Host Templater data | |
1509 | * structure. | |
1510 | * @cmnd: Pointer to scsi_cmnd data structure. | |
1511 | * @done: Pointer to done routine. | |
1512 | * | |
1513 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
1514 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
1515 | * The @done callback is invoked after driver finished processing the command. | |
1516 | * | |
1517 | * Return value : | |
1518 | * 0 - Success | |
1519 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
1520 | **/ | |
dea3101e JB |
1521 | static int |
1522 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
1523 | { | |
2e0fef85 JS |
1524 | struct Scsi_Host *shost = cmnd->device->host; |
1525 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1526 | struct lpfc_hba *phba = vport->phba; | |
1527 | struct lpfc_sli *psli = &phba->sli; | |
dea3101e JB |
1528 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1529 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 1530 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 1531 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 1532 | int err; |
dea3101e | 1533 | |
19a7b4ae JSEC |
1534 | err = fc_remote_port_chkready(rport); |
1535 | if (err) { | |
1536 | cmnd->result = err; | |
dea3101e JB |
1537 | goto out_fail_command; |
1538 | } | |
1539 | ||
1540 | /* | |
19a7b4ae JSEC |
1541 | * Catch race where our node has transitioned, but the |
1542 | * transport is still transitioning. | |
dea3101e | 1543 | */ |
b522d7d4 JS |
1544 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
1545 | cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); | |
1546 | goto out_fail_command; | |
1547 | } | |
109f6ed0 JS |
1548 | if (vport->cfg_max_scsicmpl_time && |
1549 | (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)) | |
977b5a0a | 1550 | goto out_host_busy; |
a93ce024 | 1551 | |
ed957684 | 1552 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1553 | if (lpfc_cmd == NULL) { |
92d7f7b0 JS |
1554 | lpfc_adjust_queue_depth(phba); |
1555 | ||
e8b62011 JS |
1556 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1557 | "0707 driver's buffer pool is empty, " | |
1558 | "IO busied\n"); | |
dea3101e JB |
1559 | goto out_host_busy; |
1560 | } | |
1561 | ||
ea2151b4 | 1562 | lpfc_cmd->start_time = jiffies; |
dea3101e JB |
1563 | /* |
1564 | * Store the midlayer's command structure for the completion phase | |
1565 | * and complete the command initialization. | |
1566 | */ | |
1567 | lpfc_cmd->pCmd = cmnd; | |
1568 | lpfc_cmd->rdata = rdata; | |
1569 | lpfc_cmd->timeout = 0; | |
977b5a0a | 1570 | lpfc_cmd->start_time = jiffies; |
dea3101e JB |
1571 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
1572 | cmnd->scsi_done = done; | |
1573 | ||
1574 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
1575 | if (err) | |
1576 | goto out_host_busy_free_buf; | |
1577 | ||
2e0fef85 | 1578 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 1579 | |
977b5a0a | 1580 | atomic_inc(&ndlp->cmd_pending); |
dea3101e | 1581 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], |
92d7f7b0 | 1582 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
dea3101e JB |
1583 | if (err) |
1584 | goto out_host_busy_free_buf; | |
875fbdfe JSEC |
1585 | |
1586 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
1587 | lpfc_sli_poll_fcp_ring(phba); | |
1588 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1589 | lpfc_poll_rearm_timer(phba); | |
1590 | } | |
1591 | ||
dea3101e JB |
1592 | return 0; |
1593 | ||
1594 | out_host_busy_free_buf: | |
977b5a0a | 1595 | atomic_dec(&ndlp->cmd_pending); |
bcf4dbfa | 1596 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 1597 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
1598 | out_host_busy: |
1599 | return SCSI_MLQUEUE_HOST_BUSY; | |
1600 | ||
1601 | out_fail_command: | |
1602 | done(cmnd); | |
1603 | return 0; | |
1604 | } | |
1605 | ||
9bad7671 JS |
1606 | /** |
1607 | * lpfc_block_error_handler: Routine to block error handler. | |
1608 | * @cmnd: Pointer to scsi_cmnd data structure. | |
1609 | * | |
1610 | * This routine blocks execution till fc_rport state is not FC_PORSTAT_BLCOEKD. | |
1611 | **/ | |
a90f5684 JS |
1612 | static void |
1613 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
1614 | { | |
1615 | struct Scsi_Host *shost = cmnd->device->host; | |
1616 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1617 | ||
1618 | spin_lock_irq(shost->host_lock); | |
1619 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
1620 | spin_unlock_irq(shost->host_lock); | |
1621 | msleep(1000); | |
1622 | spin_lock_irq(shost->host_lock); | |
1623 | } | |
1624 | spin_unlock_irq(shost->host_lock); | |
1625 | return; | |
1626 | } | |
63c59c3b | 1627 | |
9bad7671 JS |
1628 | /** |
1629 | * lpfc_abort_handler: Eh_abort_handler entry point of Scsi Host Template data | |
1630 | *structure. | |
1631 | * @cmnd: Pointer to scsi_cmnd data structure. | |
1632 | * | |
1633 | * This routine aborts @cmnd pending in base driver. | |
1634 | * | |
1635 | * Return code : | |
1636 | * 0x2003 - Error | |
1637 | * 0x2002 - Success | |
1638 | **/ | |
dea3101e | 1639 | static int |
63c59c3b | 1640 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1641 | { |
2e0fef85 JS |
1642 | struct Scsi_Host *shost = cmnd->device->host; |
1643 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1644 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1645 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
1646 | struct lpfc_iocbq *iocb; |
1647 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 1648 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 1649 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 1650 | int ret = SUCCESS; |
fa61a54e | 1651 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 1652 | |
a90f5684 | 1653 | lpfc_block_error_handler(cmnd); |
0bd4ca25 JSEC |
1654 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
1655 | BUG_ON(!lpfc_cmd); | |
dea3101e | 1656 | |
0bd4ca25 JSEC |
1657 | /* |
1658 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
1659 | * points to a different SCSI command, then the driver has | |
1660 | * already completed this command, but the midlayer did not | |
1661 | * see the completion before the eh fired. Just return | |
1662 | * SUCCESS. | |
1663 | */ | |
1664 | iocb = &lpfc_cmd->cur_iocbq; | |
1665 | if (lpfc_cmd->pCmd != cmnd) | |
1666 | goto out; | |
dea3101e | 1667 | |
0bd4ca25 | 1668 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 1669 | |
0bd4ca25 JSEC |
1670 | abtsiocb = lpfc_sli_get_iocbq(phba); |
1671 | if (abtsiocb == NULL) { | |
1672 | ret = FAILED; | |
dea3101e JB |
1673 | goto out; |
1674 | } | |
1675 | ||
dea3101e | 1676 | /* |
0bd4ca25 JSEC |
1677 | * The scsi command can not be in txq and it is in flight because the |
1678 | * pCmd is still pointig at the SCSI command we have to abort. There | |
1679 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 1680 | */ |
dea3101e | 1681 | |
0bd4ca25 JSEC |
1682 | cmd = &iocb->iocb; |
1683 | icmd = &abtsiocb->iocb; | |
1684 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
1685 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
1686 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 1687 | |
0bd4ca25 JSEC |
1688 | icmd->ulpLe = 1; |
1689 | icmd->ulpClass = cmd->ulpClass; | |
2e0fef85 | 1690 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
1691 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
1692 | else | |
1693 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 1694 | |
0bd4ca25 | 1695 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 1696 | abtsiocb->vport = vport; |
0bd4ca25 JSEC |
1697 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
1698 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
1699 | ret = FAILED; | |
1700 | goto out; | |
1701 | } | |
dea3101e | 1702 | |
875fbdfe JSEC |
1703 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1704 | lpfc_sli_poll_fcp_ring (phba); | |
1705 | ||
fa61a54e | 1706 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 1707 | /* Wait for abort to complete */ |
fa61a54e JS |
1708 | wait_event_timeout(waitq, |
1709 | (lpfc_cmd->pCmd != cmnd), | |
1710 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 1711 | |
fa61a54e JS |
1712 | spin_lock_irq(shost->host_lock); |
1713 | lpfc_cmd->waitq = NULL; | |
1714 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 1715 | |
0bd4ca25 JSEC |
1716 | if (lpfc_cmd->pCmd == cmnd) { |
1717 | ret = FAILED; | |
e8b62011 JS |
1718 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1719 | "0748 abort handler timed out waiting " | |
1720 | "for abort to complete: ret %#x, ID %d, " | |
1721 | "LUN %d, snum %#lx\n", | |
1722 | ret, cmnd->device->id, cmnd->device->lun, | |
1723 | cmnd->serial_number); | |
dea3101e JB |
1724 | } |
1725 | ||
1726 | out: | |
e8b62011 JS |
1727 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1728 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
1729 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
1730 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 1731 | return ret; |
8fa728a2 JG |
1732 | } |
1733 | ||
9bad7671 JS |
1734 | /** |
1735 | * lpfc_device_reset_handler: eh_device_reset entry point of Scsi Host Template | |
1736 | *data structure. | |
1737 | * @cmnd: Pointer to scsi_cmnd data structure. | |
1738 | * | |
1739 | * This routine does a device reset by sending a TARGET_RESET task management | |
1740 | * command. | |
1741 | * | |
1742 | * Return code : | |
1743 | * 0x2003 - Error | |
1744 | * 0ex2002 - Success | |
1745 | **/ | |
dea3101e | 1746 | static int |
7054a606 | 1747 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1748 | { |
2e0fef85 JS |
1749 | struct Scsi_Host *shost = cmnd->device->host; |
1750 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1751 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
1752 | struct lpfc_scsi_buf *lpfc_cmd; |
1753 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e JB |
1754 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1755 | struct lpfc_nodelist *pnode = rdata->pnode; | |
915caaaf JS |
1756 | unsigned long later; |
1757 | int ret = SUCCESS; | |
1758 | int status; | |
1759 | int cnt; | |
ea2151b4 | 1760 | struct lpfc_scsi_event_header scsi_event; |
dea3101e | 1761 | |
a90f5684 | 1762 | lpfc_block_error_handler(cmnd); |
dea3101e JB |
1763 | /* |
1764 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 1765 | * target is rediscovered or devloss timeout expires. |
dea3101e | 1766 | */ |
915caaaf JS |
1767 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
1768 | while (time_after(later, jiffies)) { | |
58da1ffb | 1769 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 1770 | return FAILED; |
f5603511 | 1771 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e | 1772 | break; |
915caaaf JS |
1773 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
1774 | rdata = cmnd->device->hostdata; | |
1775 | if (!rdata) | |
1776 | break; | |
1777 | pnode = rdata->pnode; | |
1778 | } | |
ea2151b4 JS |
1779 | |
1780 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
1781 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
1782 | scsi_event.lun = 0; | |
1783 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
1784 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
1785 | ||
1786 | fc_host_post_vendor_event(shost, | |
1787 | fc_get_event_number(), | |
1788 | sizeof(scsi_event), | |
1789 | (char *)&scsi_event, | |
ddcc50f0 | 1790 | LPFC_NL_VENDOR_ID); |
ea2151b4 | 1791 | |
915caaaf JS |
1792 | if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) { |
1793 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
1794 | "0721 LUN Reset rport " | |
1795 | "failure: msec x%x rdata x%p\n", | |
1796 | jiffies_to_msecs(jiffies - later), rdata); | |
1797 | return FAILED; | |
dea3101e | 1798 | } |
2e0fef85 | 1799 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1800 | if (lpfc_cmd == NULL) |
915caaaf | 1801 | return FAILED; |
dea3101e | 1802 | lpfc_cmd->timeout = 60; |
0b18ac42 | 1803 | lpfc_cmd->rdata = rdata; |
dea3101e | 1804 | |
915caaaf JS |
1805 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, |
1806 | cmnd->device->lun, | |
1807 | FCP_TARGET_RESET); | |
1808 | if (!status) { | |
1809 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1810 | return FAILED; | |
1811 | } | |
dea3101e JB |
1812 | iocbq = &lpfc_cmd->cur_iocbq; |
1813 | ||
1814 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 1815 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
1816 | if (iocbqrsp == NULL) { |
1817 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1818 | return FAILED; | |
1819 | } | |
e8b62011 JS |
1820 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1821 | "0703 Issue target reset to TGT %d LUN %d " | |
1822 | "rpi x%x nlp_flag x%x\n", cmnd->device->id, | |
1823 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); | |
915caaaf JS |
1824 | status = lpfc_sli_issue_iocb_wait(phba, |
1825 | &phba->sli.ring[phba->sli.fcp_ring], | |
1826 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
1827 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 1828 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
1829 | ret = TIMEOUT_ERROR; |
1830 | } else { | |
1831 | if (status != IOCB_SUCCESS) | |
1832 | ret = FAILED; | |
1833 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1834 | } | |
1835 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
1836 | "0713 SCSI layer issued device reset (%d, %d) " | |
1837 | "return x%x status x%x result x%x\n", | |
1838 | cmnd->device->id, cmnd->device->lun, ret, | |
1839 | iocbqrsp->iocb.ulpStatus, | |
1840 | iocbqrsp->iocb.un.ulpWord[4]); | |
6175c02a | 1841 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
51ef4c26 | 1842 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun, |
915caaaf | 1843 | LPFC_CTX_TGT); |
6175c02a | 1844 | if (cnt) |
51ef4c26 | 1845 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
6175c02a | 1846 | cmnd->device->id, cmnd->device->lun, |
915caaaf JS |
1847 | LPFC_CTX_TGT); |
1848 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
1849 | while (time_after(later, jiffies) && cnt) { | |
1850 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 1851 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, |
915caaaf | 1852 | cmnd->device->lun, LPFC_CTX_TGT); |
dea3101e | 1853 | } |
dea3101e | 1854 | if (cnt) { |
e8b62011 JS |
1855 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1856 | "0719 device reset I/O flush failure: " | |
1857 | "cnt x%x\n", cnt); | |
0bd4ca25 | 1858 | ret = FAILED; |
dea3101e | 1859 | } |
dea3101e JB |
1860 | return ret; |
1861 | } | |
1862 | ||
9bad7671 JS |
1863 | /** |
1864 | * lpfc_bus_reset_handler: eh_bus_reset_handler entry point of Scsi Host | |
1865 | * Template data structure. | |
1866 | * @cmnd: Pointer to scsi_cmnd data structure. | |
1867 | * | |
1868 | * This routine does target reset to all target on @cmnd->device->host. | |
1869 | * | |
1870 | * Return Code: | |
1871 | * 0x2003 - Error | |
1872 | * 0x2002 - Success | |
1873 | **/ | |
94d0e7b8 | 1874 | static int |
7054a606 | 1875 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1876 | { |
2e0fef85 JS |
1877 | struct Scsi_Host *shost = cmnd->device->host; |
1878 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1879 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
1880 | struct lpfc_nodelist *ndlp = NULL; |
1881 | int match; | |
d7c255b2 | 1882 | int ret = SUCCESS, status = SUCCESS, i; |
915caaaf | 1883 | int cnt; |
0bd4ca25 | 1884 | struct lpfc_scsi_buf * lpfc_cmd; |
915caaaf | 1885 | unsigned long later; |
ea2151b4 JS |
1886 | struct lpfc_scsi_event_header scsi_event; |
1887 | ||
1888 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
1889 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
1890 | scsi_event.lun = 0; | |
1891 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
1892 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
1893 | ||
1894 | fc_host_post_vendor_event(shost, | |
1895 | fc_get_event_number(), | |
1896 | sizeof(scsi_event), | |
1897 | (char *)&scsi_event, | |
ddcc50f0 | 1898 | LPFC_NL_VENDOR_ID); |
dea3101e | 1899 | |
a90f5684 | 1900 | lpfc_block_error_handler(cmnd); |
dea3101e JB |
1901 | /* |
1902 | * Since the driver manages a single bus device, reset all | |
1903 | * targets known to the driver. Should any target reset | |
1904 | * fail, this routine returns failure to the midlayer. | |
1905 | */ | |
e17da18e | 1906 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 1907 | /* Search for mapped node by target ID */ |
dea3101e | 1908 | match = 0; |
2e0fef85 JS |
1909 | spin_lock_irq(shost->host_lock); |
1910 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
1911 | if (!NLP_CHK_NODE_ACT(ndlp)) |
1912 | continue; | |
685f0bf7 | 1913 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 1914 | ndlp->nlp_sid == i && |
685f0bf7 | 1915 | ndlp->rport) { |
dea3101e JB |
1916 | match = 1; |
1917 | break; | |
1918 | } | |
1919 | } | |
2e0fef85 | 1920 | spin_unlock_irq(shost->host_lock); |
dea3101e JB |
1921 | if (!match) |
1922 | continue; | |
915caaaf JS |
1923 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
1924 | if (lpfc_cmd) { | |
1925 | lpfc_cmd->timeout = 60; | |
1926 | status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, | |
1927 | cmnd->device->lun, | |
1928 | ndlp->rport->dd_data); | |
1929 | if (status != TIMEOUT_ERROR) | |
1930 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1931 | } | |
1932 | if (!lpfc_cmd || status != SUCCESS) { | |
e8b62011 JS |
1933 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1934 | "0700 Bus Reset on target %d failed\n", | |
1935 | i); | |
915caaaf | 1936 | ret = FAILED; |
dea3101e JB |
1937 | } |
1938 | } | |
6175c02a JSEC |
1939 | /* |
1940 | * All outstanding txcmplq I/Os should have been aborted by | |
1941 | * the targets. Unfortunately, some targets do not abide by | |
1942 | * this forcing the driver to double check. | |
1943 | */ | |
51ef4c26 | 1944 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
6175c02a | 1945 | if (cnt) |
51ef4c26 JS |
1946 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
1947 | 0, 0, LPFC_CTX_HOST); | |
915caaaf JS |
1948 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
1949 | while (time_after(later, jiffies) && cnt) { | |
1950 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 1951 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
dea3101e | 1952 | } |
dea3101e | 1953 | if (cnt) { |
e8b62011 JS |
1954 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1955 | "0715 Bus Reset I/O flush failure: " | |
1956 | "cnt x%x left x%x\n", cnt, i); | |
0bd4ca25 | 1957 | ret = FAILED; |
6175c02a | 1958 | } |
e8b62011 JS |
1959 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1960 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e JB |
1961 | return ret; |
1962 | } | |
1963 | ||
9bad7671 JS |
1964 | /** |
1965 | * lpfc_slave_alloc: slave_alloc entry point of Scsi Host Template data | |
1966 | * structure. | |
1967 | * @sdev: Pointer to scsi_device. | |
1968 | * | |
1969 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
1970 | * globally available list of scsi buffers. This routine also makes sure scsi | |
1971 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
1972 | * of scsi buffer exists for the lifetime of the driver. | |
1973 | * | |
1974 | * Return codes: | |
1975 | * non-0 - Error | |
1976 | * 0 - Success | |
1977 | **/ | |
dea3101e JB |
1978 | static int |
1979 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1980 | { | |
2e0fef85 JS |
1981 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1982 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1983 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1984 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e JB |
1985 | uint32_t total = 0, i; |
1986 | uint32_t num_to_alloc = 0; | |
1987 | unsigned long flags; | |
dea3101e | 1988 | |
19a7b4ae | 1989 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e JB |
1990 | return -ENXIO; |
1991 | ||
19a7b4ae | 1992 | sdev->hostdata = rport->dd_data; |
dea3101e JB |
1993 | |
1994 | /* | |
1995 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1996 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1997 | * HBA limit conveyed to the midlayer via the host structure. The |
1998 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1999 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e JB |
2000 | */ |
2001 | total = phba->total_scsi_bufs; | |
3de2a653 | 2002 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
2003 | |
2004 | /* Allow some exchanges to be available always to complete discovery */ | |
2005 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
2006 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2007 | "0704 At limitation of %d preallocated " | |
2008 | "command buffers\n", total); | |
dea3101e | 2009 | return 0; |
92d7f7b0 JS |
2010 | /* Allow some exchanges to be available always to complete discovery */ |
2011 | } else if (total + num_to_alloc > | |
2012 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
2013 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
2014 | "0705 Allocation request of %d " | |
2015 | "command buffers will exceed max of %d. " | |
2016 | "Reducing allocation request to %d.\n", | |
2017 | num_to_alloc, phba->cfg_hba_queue_depth, | |
2018 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e JB |
2019 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
2020 | } | |
2021 | ||
2022 | for (i = 0; i < num_to_alloc; i++) { | |
2e0fef85 | 2023 | scsi_buf = lpfc_new_scsi_buf(vport); |
dea3101e | 2024 | if (!scsi_buf) { |
e8b62011 JS |
2025 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
2026 | "0706 Failed to allocate " | |
2027 | "command buffer\n"); | |
dea3101e JB |
2028 | break; |
2029 | } | |
2030 | ||
875fbdfe | 2031 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e JB |
2032 | phba->total_scsi_bufs++; |
2033 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 2034 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e JB |
2035 | } |
2036 | return 0; | |
2037 | } | |
2038 | ||
9bad7671 JS |
2039 | /** |
2040 | * lpfc_slave_configure: slave_configure entry point of Scsi Host Templater data | |
2041 | * structure. | |
2042 | * @sdev: Pointer to scsi_device. | |
2043 | * | |
2044 | * This routine configures following items | |
2045 | * - Tag command queuing support for @sdev if supported. | |
2046 | * - Dev loss time out value of fc_rport. | |
2047 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. | |
2048 | * | |
2049 | * Return codes: | |
2050 | * 0 - Success | |
2051 | **/ | |
dea3101e JB |
2052 | static int |
2053 | lpfc_slave_configure(struct scsi_device *sdev) | |
2054 | { | |
2e0fef85 JS |
2055 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
2056 | struct lpfc_hba *phba = vport->phba; | |
2057 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e JB |
2058 | |
2059 | if (sdev->tagged_supported) | |
3de2a653 | 2060 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 2061 | else |
3de2a653 | 2062 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e JB |
2063 | |
2064 | /* | |
2065 | * Initialize the fc transport attributes for the target | |
2066 | * containing this scsi device. Also note that the driver's | |
2067 | * target pointer is stored in the starget_data for the | |
2068 | * driver's sysfs entry point functions. | |
2069 | */ | |
3de2a653 | 2070 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 2071 | |
875fbdfe JSEC |
2072 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
2073 | lpfc_sli_poll_fcp_ring(phba); | |
2074 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
2075 | lpfc_poll_rearm_timer(phba); | |
2076 | } | |
2077 | ||
dea3101e JB |
2078 | return 0; |
2079 | } | |
2080 | ||
9bad7671 JS |
2081 | /** |
2082 | * lpfc_slave_destroy: slave_destroy entry point of SHT data structure. | |
2083 | * @sdev: Pointer to scsi_device. | |
2084 | * | |
2085 | * This routine sets @sdev hostatdata filed to null. | |
2086 | **/ | |
dea3101e JB |
2087 | static void |
2088 | lpfc_slave_destroy(struct scsi_device *sdev) | |
2089 | { | |
2090 | sdev->hostdata = NULL; | |
2091 | return; | |
2092 | } | |
2093 | ||
92d7f7b0 | 2094 | |
dea3101e JB |
2095 | struct scsi_host_template lpfc_template = { |
2096 | .module = THIS_MODULE, | |
2097 | .name = LPFC_DRIVER_NAME, | |
2098 | .info = lpfc_info, | |
2099 | .queuecommand = lpfc_queuecommand, | |
2100 | .eh_abort_handler = lpfc_abort_handler, | |
7054a606 JS |
2101 | .eh_device_reset_handler= lpfc_device_reset_handler, |
2102 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
dea3101e JB |
2103 | .slave_alloc = lpfc_slave_alloc, |
2104 | .slave_configure = lpfc_slave_configure, | |
2105 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 2106 | .scan_finished = lpfc_scan_finished, |
dea3101e | 2107 | .this_id = -1, |
83108bd3 | 2108 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e JB |
2109 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
2110 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 2111 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 2112 | .max_sectors = 0xFFFF, |
dea3101e | 2113 | }; |
3de2a653 JS |
2114 | |
2115 | struct scsi_host_template lpfc_vport_template = { | |
2116 | .module = THIS_MODULE, | |
2117 | .name = LPFC_DRIVER_NAME, | |
2118 | .info = lpfc_info, | |
2119 | .queuecommand = lpfc_queuecommand, | |
2120 | .eh_abort_handler = lpfc_abort_handler, | |
2121 | .eh_device_reset_handler= lpfc_device_reset_handler, | |
2122 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
2123 | .slave_alloc = lpfc_slave_alloc, | |
2124 | .slave_configure = lpfc_slave_configure, | |
2125 | .slave_destroy = lpfc_slave_destroy, | |
2126 | .scan_finished = lpfc_scan_finished, | |
2127 | .this_id = -1, | |
83108bd3 | 2128 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
2129 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
2130 | .use_clustering = ENABLE_CLUSTERING, | |
2131 | .shost_attrs = lpfc_vport_attrs, | |
2132 | .max_sectors = 0xFFFF, | |
2133 | }; |