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