Commit | Line | Data |
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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. * |
9413afff | 4 | * Copyright (C) 2004-2007 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" | |
35 | #include "lpfc_disc.h" | |
36 | #include "lpfc_scsi.h" | |
37 | #include "lpfc.h" | |
38 | #include "lpfc_logmsg.h" | |
39 | #include "lpfc_crtn.h" | |
92d7f7b0 | 40 | #include "lpfc_vport.h" |
dea3101e | 41 | |
42 | #define LPFC_RESET_WAIT 2 | |
43 | #define LPFC_ABORT_WAIT 2 | |
44 | ||
92d7f7b0 JS |
45 | /* |
46 | * This function is called with no lock held when there is a resource | |
47 | * error in driver or in firmware. | |
48 | */ | |
49 | void | |
50 | lpfc_adjust_queue_depth(struct lpfc_hba *phba) | |
51 | { | |
52 | unsigned long flags; | |
53 | ||
54 | spin_lock_irqsave(&phba->hbalock, flags); | |
55 | atomic_inc(&phba->num_rsrc_err); | |
56 | phba->last_rsrc_error_time = jiffies; | |
57 | ||
58 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
59 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
60 | return; | |
61 | } | |
62 | ||
63 | phba->last_ramp_down_time = jiffies; | |
64 | ||
65 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
66 | ||
67 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
68 | if ((phba->pport->work_port_events & | |
69 | WORKER_RAMP_DOWN_QUEUE) == 0) { | |
70 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; | |
71 | } | |
72 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); | |
73 | ||
74 | spin_lock_irqsave(&phba->hbalock, flags); | |
75 | if (phba->work_wait) | |
76 | wake_up(phba->work_wait); | |
77 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
78 | ||
79 | return; | |
80 | } | |
81 | ||
82 | /* | |
83 | * This function is called with no lock held when there is a successful | |
84 | * SCSI command completion. | |
85 | */ | |
86 | static inline void | |
3de2a653 | 87 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
92d7f7b0 JS |
88 | struct scsi_device *sdev) |
89 | { | |
90 | unsigned long flags; | |
3de2a653 | 91 | struct lpfc_hba *phba = vport->phba; |
92d7f7b0 JS |
92 | atomic_inc(&phba->num_cmd_success); |
93 | ||
3de2a653 | 94 | if (vport->cfg_lun_queue_depth <= sdev->queue_depth) |
92d7f7b0 | 95 | return; |
92d7f7b0 JS |
96 | spin_lock_irqsave(&phba->hbalock, flags); |
97 | if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) || | |
98 | ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) { | |
99 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
100 | return; | |
101 | } | |
92d7f7b0 JS |
102 | phba->last_ramp_up_time = jiffies; |
103 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
104 | ||
105 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
106 | if ((phba->pport->work_port_events & | |
107 | WORKER_RAMP_UP_QUEUE) == 0) { | |
108 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; | |
109 | } | |
110 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); | |
111 | ||
112 | spin_lock_irqsave(&phba->hbalock, flags); | |
113 | if (phba->work_wait) | |
114 | wake_up(phba->work_wait); | |
115 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
116 | } | |
117 | ||
118 | void | |
119 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
120 | { | |
549e55cd JS |
121 | struct lpfc_vport **vports; |
122 | struct Scsi_Host *shost; | |
92d7f7b0 JS |
123 | struct scsi_device *sdev; |
124 | unsigned long new_queue_depth; | |
125 | unsigned long num_rsrc_err, num_cmd_success; | |
549e55cd | 126 | int i; |
92d7f7b0 JS |
127 | |
128 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
129 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
130 | ||
549e55cd JS |
131 | vports = lpfc_create_vport_work_array(phba); |
132 | if (vports != NULL) | |
133 | for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { | |
134 | shost = lpfc_shost_from_vport(vports[i]); | |
135 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 136 | new_queue_depth = |
549e55cd JS |
137 | sdev->queue_depth * num_rsrc_err / |
138 | (num_rsrc_err + num_cmd_success); | |
139 | if (!new_queue_depth) | |
140 | new_queue_depth = sdev->queue_depth - 1; | |
141 | else | |
142 | new_queue_depth = sdev->queue_depth - | |
143 | new_queue_depth; | |
144 | if (sdev->ordered_tags) | |
145 | scsi_adjust_queue_depth(sdev, | |
146 | MSG_ORDERED_TAG, | |
147 | new_queue_depth); | |
148 | else | |
149 | scsi_adjust_queue_depth(sdev, | |
150 | MSG_SIMPLE_TAG, | |
151 | new_queue_depth); | |
152 | } | |
92d7f7b0 | 153 | } |
549e55cd | 154 | lpfc_destroy_vport_work_array(vports); |
92d7f7b0 JS |
155 | spin_unlock_irq(&phba->hbalock); |
156 | atomic_set(&phba->num_rsrc_err, 0); | |
157 | atomic_set(&phba->num_cmd_success, 0); | |
158 | } | |
159 | ||
160 | void | |
161 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
162 | { | |
549e55cd JS |
163 | struct lpfc_vport **vports; |
164 | struct Scsi_Host *shost; | |
92d7f7b0 | 165 | struct scsi_device *sdev; |
549e55cd JS |
166 | int i; |
167 | ||
168 | vports = lpfc_create_vport_work_array(phba); | |
169 | if (vports != NULL) | |
170 | for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { | |
171 | shost = lpfc_shost_from_vport(vports[i]); | |
172 | shost_for_each_device(sdev, shost) { | |
173 | if (sdev->ordered_tags) | |
174 | scsi_adjust_queue_depth(sdev, | |
175 | MSG_ORDERED_TAG, | |
176 | sdev->queue_depth+1); | |
177 | else | |
178 | scsi_adjust_queue_depth(sdev, | |
179 | MSG_SIMPLE_TAG, | |
180 | sdev->queue_depth+1); | |
181 | } | |
92d7f7b0 | 182 | } |
549e55cd | 183 | lpfc_destroy_vport_work_array(vports); |
92d7f7b0 JS |
184 | atomic_set(&phba->num_rsrc_err, 0); |
185 | atomic_set(&phba->num_cmd_success, 0); | |
186 | } | |
187 | ||
dea3101e | 188 | /* |
189 | * This routine allocates a scsi buffer, which contains all the necessary | |
190 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
191 | * contains information to build the IOCB. The DMAable region contains | |
192 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
193 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
194 | * and the BPL BDE is setup in the IOCB. | |
195 | */ | |
196 | static struct lpfc_scsi_buf * | |
2e0fef85 | 197 | lpfc_new_scsi_buf(struct lpfc_vport *vport) |
dea3101e | 198 | { |
2e0fef85 | 199 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 200 | struct lpfc_scsi_buf *psb; |
201 | struct ulp_bde64 *bpl; | |
202 | IOCB_t *iocb; | |
203 | dma_addr_t pdma_phys; | |
604a3e30 | 204 | uint16_t iotag; |
dea3101e | 205 | |
206 | psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
207 | if (!psb) | |
208 | return NULL; | |
209 | memset(psb, 0, sizeof (struct lpfc_scsi_buf)); | |
dea3101e | 210 | |
211 | /* | |
212 | * Get memory from the pci pool to map the virt space to pci bus space | |
213 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
214 | * struct fcp_rsp and the number of bde's necessary to support the | |
215 | * sg_tablesize. | |
216 | */ | |
217 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
218 | &psb->dma_handle); | |
219 | if (!psb->data) { | |
220 | kfree(psb); | |
221 | return NULL; | |
222 | } | |
223 | ||
224 | /* Initialize virtual ptrs to dma_buf region. */ | |
225 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
226 | ||
604a3e30 JB |
227 | /* Allocate iotag for psb->cur_iocbq. */ |
228 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
229 | if (iotag == 0) { | |
230 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
231 | psb->data, psb->dma_handle); | |
232 | kfree (psb); | |
233 | return NULL; | |
234 | } | |
0bd4ca25 | 235 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 236 | |
dea3101e | 237 | psb->fcp_cmnd = psb->data; |
238 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
239 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
240 | sizeof(struct fcp_rsp); | |
241 | ||
242 | /* Initialize local short-hand pointers. */ | |
243 | bpl = psb->fcp_bpl; | |
244 | pdma_phys = psb->dma_handle; | |
245 | ||
246 | /* | |
247 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
248 | * list bdes. Initialize the first two and leave the rest for | |
249 | * queuecommand. | |
250 | */ | |
251 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
252 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
253 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); | |
254 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; | |
255 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
256 | bpl++; | |
257 | ||
258 | /* Setup the physical region for the FCP RSP */ | |
259 | pdma_phys += sizeof (struct fcp_cmnd); | |
260 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
261 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
262 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); | |
263 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); | |
264 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
265 | ||
266 | /* | |
267 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
268 | * initialize it with all known data now. | |
269 | */ | |
270 | pdma_phys += (sizeof (struct fcp_rsp)); | |
271 | iocb = &psb->cur_iocbq.iocb; | |
272 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
273 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); | |
274 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); | |
275 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); | |
276 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; | |
277 | iocb->ulpBdeCount = 1; | |
278 | iocb->ulpClass = CLASS3; | |
279 | ||
280 | return psb; | |
281 | } | |
282 | ||
455c53ec | 283 | static struct lpfc_scsi_buf* |
875fbdfe | 284 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 285 | { |
0bd4ca25 JSEC |
286 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
287 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 288 | unsigned long iflag = 0; |
0bd4ca25 | 289 | |
875fbdfe | 290 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 291 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
292 | if (lpfc_cmd) { |
293 | lpfc_cmd->seg_cnt = 0; | |
294 | lpfc_cmd->nonsg_phys = 0; | |
295 | } | |
875fbdfe | 296 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
297 | return lpfc_cmd; |
298 | } | |
dea3101e | 299 | |
0bd4ca25 | 300 | static void |
92d7f7b0 | 301 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 302 | { |
875fbdfe | 303 | unsigned long iflag = 0; |
dea3101e | 304 | |
875fbdfe | 305 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 306 | psb->pCmd = NULL; |
dea3101e | 307 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 308 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e | 309 | } |
310 | ||
311 | static int | |
92d7f7b0 | 312 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 313 | { |
314 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
315 | struct scatterlist *sgel = NULL; | |
316 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
317 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
318 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
319 | dma_addr_t physaddr; | |
320 | uint32_t i, num_bde = 0; | |
a0b4f78f | 321 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 322 | |
323 | /* | |
324 | * There are three possibilities here - use scatter-gather segment, use | |
325 | * the single mapping, or neither. Start the lpfc command prep by | |
326 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
327 | * data bde entry. | |
328 | */ | |
329 | bpl += 2; | |
c59fd9eb | 330 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 331 | /* |
332 | * The driver stores the segment count returned from pci_map_sg | |
333 | * because this a count of dma-mappings used to map the use_sg | |
334 | * pages. They are not guaranteed to be the same for those | |
335 | * architectures that implement an IOMMU. | |
336 | */ | |
dea3101e | 337 | |
c59fd9eb FT |
338 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
339 | scsi_sg_count(scsi_cmnd), datadir); | |
340 | if (unlikely(!nseg)) | |
341 | return 1; | |
342 | ||
a0b4f78f | 343 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 344 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
345 | printk(KERN_ERR "%s: Too many sg segments from " | |
346 | "dma_map_sg. Config %d, seg_cnt %d", | |
347 | __FUNCTION__, phba->cfg_sg_seg_cnt, | |
348 | lpfc_cmd->seg_cnt); | |
a0b4f78f | 349 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 350 | return 1; |
351 | } | |
352 | ||
353 | /* | |
354 | * The driver established a maximum scatter-gather segment count | |
355 | * during probe that limits the number of sg elements in any | |
356 | * single scsi command. Just run through the seg_cnt and format | |
357 | * the bde's. | |
358 | */ | |
a0b4f78f | 359 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, i) { |
dea3101e | 360 | physaddr = sg_dma_address(sgel); |
361 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
362 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
363 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
364 | if (datadir == DMA_TO_DEVICE) | |
365 | bpl->tus.f.bdeFlags = 0; | |
366 | else | |
367 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
368 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
369 | bpl++; | |
dea3101e | 370 | num_bde++; |
371 | } | |
c59fd9eb | 372 | } |
dea3101e | 373 | |
374 | /* | |
375 | * Finish initializing those IOCB fields that are dependent on the | |
483f05f0 JSEC |
376 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly |
377 | * reinitialized since all iocb memory resources are used many times | |
378 | * for transmit, receive, and continuation bpl's. | |
dea3101e | 379 | */ |
483f05f0 | 380 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
dea3101e | 381 | iocb_cmd->un.fcpi64.bdl.bdeSize += |
382 | (num_bde * sizeof (struct ulp_bde64)); | |
383 | iocb_cmd->ulpBdeCount = 1; | |
384 | iocb_cmd->ulpLe = 1; | |
a0b4f78f | 385 | fcp_cmnd->fcpDl = be32_to_cpu(scsi_bufflen(scsi_cmnd)); |
dea3101e | 386 | return 0; |
387 | } | |
388 | ||
bcf4dbfa JS |
389 | static void |
390 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
391 | { | |
392 | /* | |
393 | * There are only two special cases to consider. (1) the scsi command | |
394 | * requested scatter-gather usage or (2) the scsi command allocated | |
395 | * a request buffer, but did not request use_sg. There is a third | |
396 | * case, but it does not require resource deallocation. | |
397 | */ | |
a0b4f78f FT |
398 | if (psb->seg_cnt > 0) |
399 | scsi_dma_unmap(psb->pCmd); | |
bcf4dbfa JS |
400 | } |
401 | ||
dea3101e | 402 | static void |
2e0fef85 JS |
403 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
404 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 405 | { |
406 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
407 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
408 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 409 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 410 | uint32_t resp_info = fcprsp->rspStatus2; |
411 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 412 | uint32_t *lp; |
dea3101e | 413 | uint32_t host_status = DID_OK; |
414 | uint32_t rsplen = 0; | |
c7743956 | 415 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 416 | |
417 | /* | |
418 | * If this is a task management command, there is no | |
419 | * scsi packet associated with this lpfc_cmd. The driver | |
420 | * consumes it. | |
421 | */ | |
422 | if (fcpcmd->fcpCntl2) { | |
423 | scsi_status = 0; | |
424 | goto out; | |
425 | } | |
426 | ||
c7743956 JS |
427 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
428 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
429 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
430 | snslen = SCSI_SENSE_BUFFERSIZE; | |
431 | ||
432 | if (resp_info & RSP_LEN_VALID) | |
433 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
434 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
435 | } | |
436 | lp = (uint32_t *)cmnd->sense_buffer; | |
437 | ||
438 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
439 | logit = LOG_FCP; | |
440 | ||
e8b62011 JS |
441 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
442 | "0730 FCP command x%x failed: x%x SNS x%x x%x " | |
443 | "Data: x%x x%x x%x x%x x%x\n", | |
444 | cmnd->cmnd[0], scsi_status, | |
445 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
446 | be32_to_cpu(fcprsp->rspResId), | |
447 | be32_to_cpu(fcprsp->rspSnsLen), | |
448 | be32_to_cpu(fcprsp->rspRspLen), | |
449 | fcprsp->rspInfo3); | |
dea3101e | 450 | |
451 | if (resp_info & RSP_LEN_VALID) { | |
452 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
453 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
454 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
455 | host_status = DID_ERROR; | |
456 | goto out; | |
457 | } | |
458 | } | |
459 | ||
a0b4f78f | 460 | scsi_set_resid(cmnd, 0); |
dea3101e | 461 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 462 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 463 | |
e8b62011 JS |
464 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
465 | "0716 FCP Read Underrun, expected %d, " | |
466 | "residual %d Data: x%x x%x x%x\n", | |
467 | be32_to_cpu(fcpcmd->fcpDl), | |
468 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
469 | cmnd->underflow); | |
dea3101e | 470 | |
7054a606 JS |
471 | /* |
472 | * If there is an under run check if under run reported by | |
473 | * storage array is same as the under run reported by HBA. | |
474 | * If this is not same, there is a dropped frame. | |
475 | */ | |
476 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
477 | fcpi_parm && | |
a0b4f78f | 478 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
479 | lpfc_printf_vlog(vport, KERN_WARNING, |
480 | LOG_FCP | LOG_FCP_ERROR, | |
481 | "0735 FCP Read Check Error " | |
482 | "and Underrun Data: x%x x%x x%x x%x\n", | |
483 | be32_to_cpu(fcpcmd->fcpDl), | |
484 | scsi_get_resid(cmnd), fcpi_parm, | |
485 | cmnd->cmnd[0]); | |
a0b4f78f | 486 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
487 | host_status = DID_ERROR; |
488 | } | |
dea3101e | 489 | /* |
490 | * The cmnd->underflow is the minimum number of bytes that must | |
491 | * be transfered for this command. Provided a sense condition | |
492 | * is not present, make sure the actual amount transferred is at | |
493 | * least the underflow value or fail. | |
494 | */ | |
495 | if (!(resp_info & SNS_LEN_VALID) && | |
496 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
497 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
498 | < cmnd->underflow)) { | |
e8b62011 JS |
499 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
500 | "0717 FCP command x%x residual " | |
501 | "underrun converted to error " | |
502 | "Data: x%x x%x x%x\n", | |
503 | cmnd->cmnd[0], cmnd->request_bufflen, | |
504 | scsi_get_resid(cmnd), cmnd->underflow); | |
dea3101e | 505 | host_status = DID_ERROR; |
506 | } | |
507 | } else if (resp_info & RESID_OVER) { | |
e8b62011 JS |
508 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
509 | "0720 FCP command x%x residual overrun error. " | |
510 | "Data: x%x x%x \n", cmnd->cmnd[0], | |
511 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); | |
dea3101e | 512 | host_status = DID_ERROR; |
513 | ||
514 | /* | |
515 | * Check SLI validation that all the transfer was actually done | |
516 | * (fcpi_parm should be zero). Apply check only to reads. | |
517 | */ | |
518 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
519 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 JS |
520 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
521 | "0734 FCP Read Check Error Data: " | |
522 | "x%x x%x x%x x%x\n", | |
523 | be32_to_cpu(fcpcmd->fcpDl), | |
524 | be32_to_cpu(fcprsp->rspResId), | |
525 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 526 | host_status = DID_ERROR; |
a0b4f78f | 527 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 528 | } |
529 | ||
530 | out: | |
531 | cmnd->result = ScsiResult(host_status, scsi_status); | |
532 | } | |
533 | ||
534 | static void | |
535 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
536 | struct lpfc_iocbq *pIocbOut) | |
537 | { | |
538 | struct lpfc_scsi_buf *lpfc_cmd = | |
539 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 540 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 541 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
542 | struct lpfc_nodelist *pnode = rdata->pnode; | |
543 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 JSEC |
544 | int result; |
545 | struct scsi_device *sdev, *tmp_sdev; | |
546 | int depth = 0; | |
dea3101e | 547 | |
548 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
549 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
550 | ||
551 | if (lpfc_cmd->status) { | |
552 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
553 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
554 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
555 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
556 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
557 | ||
e8b62011 JS |
558 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
559 | "0729 FCP cmd x%x failed <%d/%d> " | |
560 | "status: x%x result: x%x Data: x%x x%x\n", | |
561 | cmd->cmnd[0], | |
562 | cmd->device ? cmd->device->id : 0xffff, | |
563 | cmd->device ? cmd->device->lun : 0xffff, | |
564 | lpfc_cmd->status, lpfc_cmd->result, | |
565 | pIocbOut->iocb.ulpContext, | |
566 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 567 | |
568 | switch (lpfc_cmd->status) { | |
569 | case IOSTAT_FCP_RSP_ERROR: | |
570 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 571 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 572 | break; |
573 | case IOSTAT_NPORT_BSY: | |
574 | case IOSTAT_FABRIC_BSY: | |
575 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); | |
576 | break; | |
92d7f7b0 JS |
577 | case IOSTAT_LOCAL_REJECT: |
578 | if (lpfc_cmd->result == RJT_UNAVAIL_PERM || | |
579 | lpfc_cmd->result == IOERR_NO_RESOURCES || | |
580 | lpfc_cmd->result == RJT_LOGIN_REQUIRED) { | |
581 | cmd->result = ScsiResult(DID_REQUEUE, 0); | |
582 | break; | |
583 | } /* else: fall through */ | |
dea3101e | 584 | default: |
585 | cmd->result = ScsiResult(DID_ERROR, 0); | |
586 | break; | |
587 | } | |
588 | ||
19a7b4ae JSEC |
589 | if ((pnode == NULL ) |
590 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
591 | cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY); | |
dea3101e | 592 | } else { |
593 | cmd->result = ScsiResult(DID_OK, 0); | |
594 | } | |
595 | ||
596 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
597 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
598 | ||
e8b62011 JS |
599 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
600 | "0710 Iodone <%d/%d> cmd %p, error " | |
601 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
602 | cmd->device->id, cmd->device->lun, cmd, | |
603 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
604 | scsi_get_resid(cmd)); | |
dea3101e | 605 | } |
606 | ||
445cf4f4 JSEC |
607 | result = cmd->result; |
608 | sdev = cmd->device; | |
1dcb58e5 | 609 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
610 | cmd->scsi_done(cmd); |
611 | ||
b808608b JW |
612 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
613 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
614 | return; | |
615 | } | |
616 | ||
92d7f7b0 JS |
617 | |
618 | if (!result) | |
3de2a653 | 619 | lpfc_rampup_queue_depth(vport, sdev); |
92d7f7b0 | 620 | |
0c6ac8ef | 621 | if (!result && pnode != NULL && |
445cf4f4 JSEC |
622 | ((jiffies - pnode->last_ramp_up_time) > |
623 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
624 | ((jiffies - pnode->last_q_full_time) > | |
625 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
3de2a653 | 626 | (vport->cfg_lun_queue_depth > sdev->queue_depth)) { |
445cf4f4 | 627 | shost_for_each_device(tmp_sdev, sdev->host) { |
3de2a653 | 628 | if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){ |
445cf4f4 JSEC |
629 | if (tmp_sdev->id != sdev->id) |
630 | continue; | |
631 | if (tmp_sdev->ordered_tags) | |
632 | scsi_adjust_queue_depth(tmp_sdev, | |
633 | MSG_ORDERED_TAG, | |
634 | tmp_sdev->queue_depth+1); | |
635 | else | |
636 | scsi_adjust_queue_depth(tmp_sdev, | |
637 | MSG_SIMPLE_TAG, | |
638 | tmp_sdev->queue_depth+1); | |
639 | ||
640 | pnode->last_ramp_up_time = jiffies; | |
641 | } | |
642 | } | |
643 | } | |
644 | ||
645 | /* | |
646 | * Check for queue full. If the lun is reporting queue full, then | |
647 | * back off the lun queue depth to prevent target overloads. | |
648 | */ | |
0c6ac8ef | 649 | if (result == SAM_STAT_TASK_SET_FULL && pnode != NULL) { |
445cf4f4 JSEC |
650 | pnode->last_q_full_time = jiffies; |
651 | ||
652 | shost_for_each_device(tmp_sdev, sdev->host) { | |
653 | if (tmp_sdev->id != sdev->id) | |
654 | continue; | |
655 | depth = scsi_track_queue_full(tmp_sdev, | |
656 | tmp_sdev->queue_depth - 1); | |
657 | } | |
658 | /* | |
2e0fef85 | 659 | * The queue depth cannot be lowered any more. |
445cf4f4 JSEC |
660 | * Modify the returned error code to store |
661 | * the final depth value set by | |
662 | * scsi_track_queue_full. | |
663 | */ | |
664 | if (depth == -1) | |
665 | depth = sdev->host->cmd_per_lun; | |
666 | ||
667 | if (depth) { | |
e8b62011 JS |
668 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
669 | "0711 detected queue full - lun queue " | |
670 | "depth adjusted to %d.\n", depth); | |
445cf4f4 JSEC |
671 | } |
672 | } | |
673 | ||
0bd4ca25 | 674 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 675 | } |
676 | ||
677 | static void | |
2e0fef85 JS |
678 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
679 | struct lpfc_nodelist *pnode) | |
dea3101e | 680 | { |
2e0fef85 | 681 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 682 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
683 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
684 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
685 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
686 | int datadir = scsi_cmnd->sc_data_direction; | |
687 | ||
688 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; | |
69859dc4 JSEC |
689 | /* clear task management bits */ |
690 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 691 | |
91886523 JSEC |
692 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
693 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 694 | |
695 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
696 | ||
697 | if (scsi_cmnd->device->tagged_supported) { | |
698 | switch (scsi_cmnd->tag) { | |
699 | case HEAD_OF_QUEUE_TAG: | |
700 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
701 | break; | |
702 | case ORDERED_QUEUE_TAG: | |
703 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
704 | break; | |
705 | default: | |
706 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
707 | break; | |
708 | } | |
709 | } else | |
710 | fcp_cmnd->fcpCntl1 = 0; | |
711 | ||
712 | /* | |
713 | * There are three possibilities here - use scatter-gather segment, use | |
714 | * the single mapping, or neither. Start the lpfc command prep by | |
715 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
716 | * data bde entry. | |
717 | */ | |
a0b4f78f | 718 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 719 | if (datadir == DMA_TO_DEVICE) { |
720 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
721 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
722 | iocb_cmd->ulpPU = 0; | |
723 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
724 | phba->fc4OutputRequests++; | |
725 | } else { | |
726 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
727 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
a0b4f78f | 728 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
dea3101e | 729 | fcp_cmnd->fcpCntl3 = READ_DATA; |
730 | phba->fc4InputRequests++; | |
731 | } | |
732 | } else { | |
733 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
734 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
735 | iocb_cmd->ulpPU = 0; | |
736 | fcp_cmnd->fcpCntl3 = 0; | |
737 | phba->fc4ControlRequests++; | |
738 | } | |
739 | ||
740 | /* | |
741 | * Finish initializing those IOCB fields that are independent | |
742 | * of the scsi_cmnd request_buffer | |
743 | */ | |
744 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
745 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
746 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
747 | ||
748 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
749 | piocbq->context1 = lpfc_cmd; | |
750 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
751 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 752 | piocbq->vport = vport; |
dea3101e | 753 | } |
754 | ||
755 | static int | |
2e0fef85 | 756 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 757 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 758 | unsigned int lun, |
dea3101e | 759 | uint8_t task_mgmt_cmd) |
760 | { | |
dea3101e | 761 | struct lpfc_iocbq *piocbq; |
762 | IOCB_t *piocb; | |
763 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 764 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 765 | struct lpfc_nodelist *ndlp = rdata->pnode; |
766 | ||
19a7b4ae | 767 | if ((ndlp == NULL) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { |
dea3101e | 768 | return 0; |
769 | } | |
770 | ||
dea3101e | 771 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
772 | piocbq->vport = vport; |
773 | ||
dea3101e | 774 | piocb = &piocbq->iocb; |
775 | ||
776 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
420b630d | 777 | int_to_scsilun(lun, &lpfc_cmd->fcp_cmnd->fcp_lun); |
dea3101e | 778 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
779 | ||
780 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; | |
781 | ||
782 | piocb->ulpContext = ndlp->nlp_rpi; | |
783 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
784 | piocb->ulpFCP2Rcvy = 1; | |
785 | } | |
786 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
787 | ||
788 | /* ulpTimeout is only one byte */ | |
789 | if (lpfc_cmd->timeout > 0xff) { | |
790 | /* | |
791 | * Do not timeout the command at the firmware level. | |
792 | * The driver will provide the timeout mechanism. | |
793 | */ | |
794 | piocb->ulpTimeout = 0; | |
795 | } else { | |
796 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
797 | } | |
798 | ||
2e0fef85 | 799 | return 1; |
dea3101e | 800 | } |
801 | ||
7054a606 JS |
802 | static void |
803 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
804 | struct lpfc_iocbq *cmdiocbq, | |
805 | struct lpfc_iocbq *rspiocbq) | |
806 | { | |
807 | struct lpfc_scsi_buf *lpfc_cmd = | |
808 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
809 | if (lpfc_cmd) | |
810 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
811 | return; | |
812 | } | |
813 | ||
dea3101e | 814 | static int |
2e0fef85 | 815 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, |
420b630d JS |
816 | unsigned tgt_id, unsigned int lun, |
817 | struct lpfc_rport_data *rdata) | |
dea3101e | 818 | { |
2e0fef85 | 819 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 820 | struct lpfc_iocbq *iocbq; |
0bd4ca25 | 821 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 822 | int ret; |
823 | ||
f5603511 JS |
824 | if (!rdata->pnode) |
825 | return FAILED; | |
826 | ||
0b18ac42 | 827 | lpfc_cmd->rdata = rdata; |
2e0fef85 | 828 | ret = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, |
420b630d | 829 | FCP_TARGET_RESET); |
dea3101e | 830 | if (!ret) |
831 | return FAILED; | |
832 | ||
dea3101e | 833 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 JSEC |
834 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
835 | ||
dea3101e | 836 | if (!iocbqrsp) |
837 | return FAILED; | |
dea3101e | 838 | |
0b18ac42 | 839 | /* Issue Target Reset to TGT <num> */ |
e8b62011 JS |
840 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
841 | "0702 Issue Target Reset to TGT %d Data: x%x x%x\n", | |
842 | tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
68876920 JSEC |
843 | ret = lpfc_sli_issue_iocb_wait(phba, |
844 | &phba->sli.ring[phba->sli.fcp_ring], | |
845 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 846 | if (ret != IOCB_SUCCESS) { |
7054a606 JS |
847 | if (ret == IOCB_TIMEDOUT) |
848 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
dea3101e | 849 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
dea3101e | 850 | } else { |
851 | ret = SUCCESS; | |
852 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
853 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
854 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
855 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
856 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
857 | } | |
858 | ||
604a3e30 | 859 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e | 860 | return ret; |
861 | } | |
862 | ||
dea3101e | 863 | const char * |
864 | lpfc_info(struct Scsi_Host *host) | |
865 | { | |
2e0fef85 JS |
866 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
867 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 868 | int len; |
869 | static char lpfcinfobuf[384]; | |
870 | ||
871 | memset(lpfcinfobuf,0,384); | |
872 | if (phba && phba->pcidev){ | |
873 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
874 | len = strlen(lpfcinfobuf); | |
875 | snprintf(lpfcinfobuf + len, | |
876 | 384-len, | |
877 | " on PCI bus %02x device %02x irq %d", | |
878 | phba->pcidev->bus->number, | |
879 | phba->pcidev->devfn, | |
880 | phba->pcidev->irq); | |
881 | len = strlen(lpfcinfobuf); | |
882 | if (phba->Port[0]) { | |
883 | snprintf(lpfcinfobuf + len, | |
884 | 384-len, | |
885 | " port %s", | |
886 | phba->Port); | |
887 | } | |
888 | } | |
889 | return lpfcinfobuf; | |
890 | } | |
891 | ||
875fbdfe JSEC |
892 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
893 | { | |
894 | unsigned long poll_tmo_expires = | |
895 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
896 | ||
897 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
898 | mod_timer(&phba->fcp_poll_timer, | |
899 | poll_tmo_expires); | |
900 | } | |
901 | ||
902 | void lpfc_poll_start_timer(struct lpfc_hba * phba) | |
903 | { | |
904 | lpfc_poll_rearm_timer(phba); | |
905 | } | |
906 | ||
907 | void lpfc_poll_timeout(unsigned long ptr) | |
908 | { | |
2e0fef85 | 909 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
910 | |
911 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
912 | lpfc_sli_poll_fcp_ring (phba); | |
913 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
914 | lpfc_poll_rearm_timer(phba); | |
915 | } | |
875fbdfe JSEC |
916 | } |
917 | ||
dea3101e | 918 | static int |
919 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
920 | { | |
2e0fef85 JS |
921 | struct Scsi_Host *shost = cmnd->device->host; |
922 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
923 | struct lpfc_hba *phba = vport->phba; | |
924 | struct lpfc_sli *psli = &phba->sli; | |
dea3101e | 925 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
926 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 927 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 928 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 929 | int err; |
dea3101e | 930 | |
19a7b4ae JSEC |
931 | err = fc_remote_port_chkready(rport); |
932 | if (err) { | |
933 | cmnd->result = err; | |
dea3101e | 934 | goto out_fail_command; |
935 | } | |
936 | ||
937 | /* | |
19a7b4ae JSEC |
938 | * Catch race where our node has transitioned, but the |
939 | * transport is still transitioning. | |
dea3101e | 940 | */ |
19a7b4ae JSEC |
941 | if (!ndlp) { |
942 | cmnd->result = ScsiResult(DID_BUS_BUSY, 0); | |
943 | goto out_fail_command; | |
dea3101e | 944 | } |
ed957684 | 945 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 946 | if (lpfc_cmd == NULL) { |
92d7f7b0 JS |
947 | lpfc_adjust_queue_depth(phba); |
948 | ||
e8b62011 JS |
949 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
950 | "0707 driver's buffer pool is empty, " | |
951 | "IO busied\n"); | |
dea3101e | 952 | goto out_host_busy; |
953 | } | |
954 | ||
955 | /* | |
956 | * Store the midlayer's command structure for the completion phase | |
957 | * and complete the command initialization. | |
958 | */ | |
959 | lpfc_cmd->pCmd = cmnd; | |
960 | lpfc_cmd->rdata = rdata; | |
961 | lpfc_cmd->timeout = 0; | |
962 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
963 | cmnd->scsi_done = done; | |
964 | ||
965 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
966 | if (err) | |
967 | goto out_host_busy_free_buf; | |
968 | ||
2e0fef85 | 969 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 970 | |
971 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
92d7f7b0 | 972 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
dea3101e | 973 | if (err) |
974 | goto out_host_busy_free_buf; | |
875fbdfe JSEC |
975 | |
976 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
977 | lpfc_sli_poll_fcp_ring(phba); | |
978 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
979 | lpfc_poll_rearm_timer(phba); | |
980 | } | |
981 | ||
dea3101e | 982 | return 0; |
983 | ||
984 | out_host_busy_free_buf: | |
bcf4dbfa | 985 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 986 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 987 | out_host_busy: |
988 | return SCSI_MLQUEUE_HOST_BUSY; | |
989 | ||
990 | out_fail_command: | |
991 | done(cmnd); | |
992 | return 0; | |
993 | } | |
994 | ||
a90f5684 JS |
995 | static void |
996 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
997 | { | |
998 | struct Scsi_Host *shost = cmnd->device->host; | |
999 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1000 | ||
1001 | spin_lock_irq(shost->host_lock); | |
1002 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
1003 | spin_unlock_irq(shost->host_lock); | |
1004 | msleep(1000); | |
1005 | spin_lock_irq(shost->host_lock); | |
1006 | } | |
1007 | spin_unlock_irq(shost->host_lock); | |
1008 | return; | |
1009 | } | |
63c59c3b | 1010 | |
dea3101e | 1011 | static int |
63c59c3b | 1012 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1013 | { |
2e0fef85 JS |
1014 | struct Scsi_Host *shost = cmnd->device->host; |
1015 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1016 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1017 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
1018 | struct lpfc_iocbq *iocb; |
1019 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 1020 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 1021 | IOCB_t *cmd, *icmd; |
dea3101e | 1022 | unsigned int loop_count = 0; |
0bd4ca25 | 1023 | int ret = SUCCESS; |
dea3101e | 1024 | |
a90f5684 | 1025 | lpfc_block_error_handler(cmnd); |
0bd4ca25 JSEC |
1026 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
1027 | BUG_ON(!lpfc_cmd); | |
dea3101e | 1028 | |
0bd4ca25 JSEC |
1029 | /* |
1030 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
1031 | * points to a different SCSI command, then the driver has | |
1032 | * already completed this command, but the midlayer did not | |
1033 | * see the completion before the eh fired. Just return | |
1034 | * SUCCESS. | |
1035 | */ | |
1036 | iocb = &lpfc_cmd->cur_iocbq; | |
1037 | if (lpfc_cmd->pCmd != cmnd) | |
1038 | goto out; | |
dea3101e | 1039 | |
0bd4ca25 | 1040 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 1041 | |
0bd4ca25 JSEC |
1042 | abtsiocb = lpfc_sli_get_iocbq(phba); |
1043 | if (abtsiocb == NULL) { | |
1044 | ret = FAILED; | |
dea3101e | 1045 | goto out; |
1046 | } | |
1047 | ||
dea3101e | 1048 | /* |
0bd4ca25 JSEC |
1049 | * The scsi command can not be in txq and it is in flight because the |
1050 | * pCmd is still pointig at the SCSI command we have to abort. There | |
1051 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 1052 | */ |
dea3101e | 1053 | |
0bd4ca25 JSEC |
1054 | cmd = &iocb->iocb; |
1055 | icmd = &abtsiocb->iocb; | |
1056 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
1057 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
1058 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 1059 | |
0bd4ca25 JSEC |
1060 | icmd->ulpLe = 1; |
1061 | icmd->ulpClass = cmd->ulpClass; | |
2e0fef85 | 1062 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
1063 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
1064 | else | |
1065 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 1066 | |
0bd4ca25 | 1067 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 1068 | abtsiocb->vport = vport; |
0bd4ca25 JSEC |
1069 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
1070 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
1071 | ret = FAILED; | |
1072 | goto out; | |
1073 | } | |
dea3101e | 1074 | |
875fbdfe JSEC |
1075 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1076 | lpfc_sli_poll_fcp_ring (phba); | |
1077 | ||
0bd4ca25 JSEC |
1078 | /* Wait for abort to complete */ |
1079 | while (lpfc_cmd->pCmd == cmnd) | |
1080 | { | |
875fbdfe JSEC |
1081 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1082 | lpfc_sli_poll_fcp_ring (phba); | |
1083 | ||
2e0fef85 | 1084 | schedule_timeout_uninterruptible(LPFC_ABORT_WAIT * HZ); |
0bd4ca25 | 1085 | if (++loop_count |
3de2a653 | 1086 | > (2 * vport->cfg_devloss_tmo)/LPFC_ABORT_WAIT) |
0bd4ca25 JSEC |
1087 | break; |
1088 | } | |
dea3101e | 1089 | |
0bd4ca25 JSEC |
1090 | if (lpfc_cmd->pCmd == cmnd) { |
1091 | ret = FAILED; | |
e8b62011 JS |
1092 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1093 | "0748 abort handler timed out waiting " | |
1094 | "for abort to complete: ret %#x, ID %d, " | |
1095 | "LUN %d, snum %#lx\n", | |
1096 | ret, cmnd->device->id, cmnd->device->lun, | |
1097 | cmnd->serial_number); | |
dea3101e | 1098 | } |
1099 | ||
1100 | out: | |
e8b62011 JS |
1101 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1102 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
1103 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
1104 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 1105 | return ret; |
8fa728a2 JG |
1106 | } |
1107 | ||
dea3101e | 1108 | static int |
7054a606 | 1109 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1110 | { |
2e0fef85 JS |
1111 | struct Scsi_Host *shost = cmnd->device->host; |
1112 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1113 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
1114 | struct lpfc_scsi_buf *lpfc_cmd; |
1115 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e | 1116 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1117 | struct lpfc_nodelist *pnode = rdata->pnode; | |
6175c02a | 1118 | uint32_t cmd_result = 0, cmd_status = 0; |
dea3101e | 1119 | int ret = FAILED; |
7054a606 | 1120 | int iocb_status = IOCB_SUCCESS; |
dea3101e | 1121 | int cnt, loopcnt; |
1122 | ||
a90f5684 | 1123 | lpfc_block_error_handler(cmnd); |
f5603511 | 1124 | loopcnt = 0; |
dea3101e | 1125 | /* |
1126 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 1127 | * target is rediscovered or devloss timeout expires. |
dea3101e | 1128 | */ |
92d7f7b0 | 1129 | while (1) { |
dea3101e | 1130 | if (!pnode) |
7054a606 | 1131 | goto out; |
dea3101e | 1132 | |
1133 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
a9a3047d | 1134 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
f5603511 JS |
1135 | loopcnt++; |
1136 | rdata = cmnd->device->hostdata; | |
1137 | if (!rdata || | |
3de2a653 | 1138 | (loopcnt > ((vport->cfg_devloss_tmo * 2) + 1))){ |
e8b62011 JS |
1139 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1140 | "0721 LUN Reset rport " | |
1141 | "failure: cnt x%x rdata x%p\n", | |
1142 | loopcnt, rdata); | |
f5603511 JS |
1143 | goto out; |
1144 | } | |
1145 | pnode = rdata->pnode; | |
1146 | if (!pnode) | |
7054a606 | 1147 | goto out; |
dea3101e | 1148 | } |
f5603511 | 1149 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e | 1150 | break; |
1151 | } | |
1152 | ||
2e0fef85 | 1153 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1154 | if (lpfc_cmd == NULL) |
1155 | goto out; | |
1156 | ||
dea3101e | 1157 | lpfc_cmd->timeout = 60; |
0b18ac42 | 1158 | lpfc_cmd->rdata = rdata; |
dea3101e | 1159 | |
2e0fef85 | 1160 | ret = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, cmnd->device->lun, |
7054a606 | 1161 | FCP_TARGET_RESET); |
dea3101e | 1162 | if (!ret) |
1163 | goto out_free_scsi_buf; | |
1164 | ||
1165 | iocbq = &lpfc_cmd->cur_iocbq; | |
1166 | ||
1167 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 1168 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
dea3101e | 1169 | if (iocbqrsp == NULL) |
1170 | goto out_free_scsi_buf; | |
1171 | ||
e8b62011 JS |
1172 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1173 | "0703 Issue target reset to TGT %d LUN %d " | |
1174 | "rpi x%x nlp_flag x%x\n", cmnd->device->id, | |
1175 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); | |
7054a606 | 1176 | iocb_status = lpfc_sli_issue_iocb_wait(phba, |
68876920 JSEC |
1177 | &phba->sli.ring[phba->sli.fcp_ring], |
1178 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 1179 | |
7054a606 JS |
1180 | if (iocb_status == IOCB_TIMEDOUT) |
1181 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
1182 | ||
1183 | if (iocb_status == IOCB_SUCCESS) | |
1184 | ret = SUCCESS; | |
1185 | else | |
1186 | ret = iocb_status; | |
6175c02a JSEC |
1187 | |
1188 | cmd_result = iocbqrsp->iocb.un.ulpWord[4]; | |
1189 | cmd_status = iocbqrsp->iocb.ulpStatus; | |
1190 | ||
1191 | lpfc_sli_release_iocbq(phba, iocbqrsp); | |
dea3101e | 1192 | |
1193 | /* | |
6175c02a | 1194 | * All outstanding txcmplq I/Os should have been aborted by the device. |
dea3101e | 1195 | * Unfortunately, some targets do not abide by this forcing the driver |
1196 | * to double check. | |
1197 | */ | |
6175c02a JSEC |
1198 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
1199 | cmnd->device->id, cmnd->device->lun, | |
1200 | LPFC_CTX_LUN); | |
1201 | if (cnt) | |
1202 | lpfc_sli_abort_iocb(phba, | |
1203 | &phba->sli.ring[phba->sli.fcp_ring], | |
1204 | cmnd->device->id, cmnd->device->lun, | |
1205 | 0, LPFC_CTX_LUN); | |
dea3101e | 1206 | loopcnt = 0; |
92d7f7b0 | 1207 | while(cnt) { |
a9a3047d | 1208 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
dea3101e | 1209 | |
1210 | if (++loopcnt | |
3de2a653 | 1211 | > (2 * vport->cfg_devloss_tmo)/LPFC_RESET_WAIT) |
dea3101e | 1212 | break; |
6175c02a JSEC |
1213 | |
1214 | cnt = lpfc_sli_sum_iocb(phba, | |
1215 | &phba->sli.ring[phba->sli.fcp_ring], | |
1216 | cmnd->device->id, cmnd->device->lun, | |
1217 | LPFC_CTX_LUN); | |
dea3101e | 1218 | } |
1219 | ||
1220 | if (cnt) { | |
e8b62011 JS |
1221 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1222 | "0719 device reset I/O flush failure: " | |
1223 | "cnt x%x\n", cnt); | |
0bd4ca25 | 1224 | ret = FAILED; |
dea3101e | 1225 | } |
1226 | ||
dea3101e | 1227 | out_free_scsi_buf: |
7054a606 JS |
1228 | if (iocb_status != IOCB_TIMEDOUT) { |
1229 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1230 | } | |
e8b62011 JS |
1231 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1232 | "0713 SCSI layer issued device reset (%d, %d) " | |
1233 | "return x%x status x%x result x%x\n", | |
1234 | cmnd->device->id, cmnd->device->lun, ret, | |
1235 | cmd_status, cmd_result); | |
dea3101e | 1236 | out: |
1237 | return ret; | |
1238 | } | |
1239 | ||
94d0e7b8 | 1240 | static int |
7054a606 | 1241 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1242 | { |
2e0fef85 JS |
1243 | struct Scsi_Host *shost = cmnd->device->host; |
1244 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1245 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1246 | struct lpfc_nodelist *ndlp = NULL; |
1247 | int match; | |
1248 | int ret = FAILED, i, err_count = 0; | |
1249 | int cnt, loopcnt; | |
0bd4ca25 | 1250 | struct lpfc_scsi_buf * lpfc_cmd; |
dea3101e | 1251 | |
a90f5684 | 1252 | lpfc_block_error_handler(cmnd); |
63c59c3b | 1253 | |
875fbdfe | 1254 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1255 | if (lpfc_cmd == NULL) |
1256 | goto out; | |
1257 | ||
1258 | /* The lpfc_cmd storage is reused. Set all loop invariants. */ | |
1259 | lpfc_cmd->timeout = 60; | |
dea3101e | 1260 | |
1261 | /* | |
1262 | * Since the driver manages a single bus device, reset all | |
1263 | * targets known to the driver. Should any target reset | |
1264 | * fail, this routine returns failure to the midlayer. | |
1265 | */ | |
e17da18e | 1266 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 1267 | /* Search for mapped node by target ID */ |
dea3101e | 1268 | match = 0; |
2e0fef85 JS |
1269 | spin_lock_irq(shost->host_lock); |
1270 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
685f0bf7 JS |
1271 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
1272 | i == ndlp->nlp_sid && | |
1273 | ndlp->rport) { | |
dea3101e | 1274 | match = 1; |
1275 | break; | |
1276 | } | |
1277 | } | |
2e0fef85 | 1278 | spin_unlock_irq(shost->host_lock); |
dea3101e | 1279 | if (!match) |
1280 | continue; | |
1281 | ||
2e0fef85 JS |
1282 | ret = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, |
1283 | cmnd->device->lun, | |
420b630d | 1284 | ndlp->rport->dd_data); |
dea3101e | 1285 | if (ret != SUCCESS) { |
e8b62011 JS |
1286 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1287 | "0700 Bus Reset on target %d failed\n", | |
1288 | i); | |
dea3101e | 1289 | err_count++; |
7054a606 | 1290 | break; |
dea3101e | 1291 | } |
1292 | } | |
1293 | ||
7054a606 JS |
1294 | if (ret != IOCB_TIMEDOUT) |
1295 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1296 | ||
6175c02a JSEC |
1297 | if (err_count == 0) |
1298 | ret = SUCCESS; | |
7054a606 JS |
1299 | else |
1300 | ret = FAILED; | |
6175c02a JSEC |
1301 | |
1302 | /* | |
1303 | * All outstanding txcmplq I/Os should have been aborted by | |
1304 | * the targets. Unfortunately, some targets do not abide by | |
1305 | * this forcing the driver to double check. | |
1306 | */ | |
6175c02a JSEC |
1307 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
1308 | 0, 0, LPFC_CTX_HOST); | |
1309 | if (cnt) | |
1310 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], | |
1311 | 0, 0, 0, LPFC_CTX_HOST); | |
dea3101e | 1312 | loopcnt = 0; |
92d7f7b0 | 1313 | while(cnt) { |
a9a3047d | 1314 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
dea3101e | 1315 | |
1316 | if (++loopcnt | |
3de2a653 | 1317 | > (2 * vport->cfg_devloss_tmo)/LPFC_RESET_WAIT) |
dea3101e | 1318 | break; |
6175c02a JSEC |
1319 | |
1320 | cnt = lpfc_sli_sum_iocb(phba, | |
1321 | &phba->sli.ring[phba->sli.fcp_ring], | |
1322 | 0, 0, LPFC_CTX_HOST); | |
dea3101e | 1323 | } |
1324 | ||
1325 | if (cnt) { | |
e8b62011 JS |
1326 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1327 | "0715 Bus Reset I/O flush failure: " | |
1328 | "cnt x%x left x%x\n", cnt, i); | |
0bd4ca25 | 1329 | ret = FAILED; |
6175c02a | 1330 | } |
dea3101e | 1331 | |
e8b62011 JS |
1332 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1333 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 1334 | out: |
1335 | return ret; | |
1336 | } | |
1337 | ||
1338 | static int | |
1339 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1340 | { | |
2e0fef85 JS |
1341 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1342 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1343 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1344 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e | 1345 | uint32_t total = 0, i; |
1346 | uint32_t num_to_alloc = 0; | |
1347 | unsigned long flags; | |
dea3101e | 1348 | |
19a7b4ae | 1349 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 1350 | return -ENXIO; |
1351 | ||
19a7b4ae | 1352 | sdev->hostdata = rport->dd_data; |
dea3101e | 1353 | |
1354 | /* | |
1355 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1356 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1357 | * HBA limit conveyed to the midlayer via the host structure. The |
1358 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1359 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 1360 | */ |
1361 | total = phba->total_scsi_bufs; | |
3de2a653 | 1362 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
1363 | |
1364 | /* Allow some exchanges to be available always to complete discovery */ | |
1365 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
1366 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1367 | "0704 At limitation of %d preallocated " | |
1368 | "command buffers\n", total); | |
dea3101e | 1369 | return 0; |
92d7f7b0 JS |
1370 | /* Allow some exchanges to be available always to complete discovery */ |
1371 | } else if (total + num_to_alloc > | |
1372 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
1373 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1374 | "0705 Allocation request of %d " | |
1375 | "command buffers will exceed max of %d. " | |
1376 | "Reducing allocation request to %d.\n", | |
1377 | num_to_alloc, phba->cfg_hba_queue_depth, | |
1378 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 1379 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
1380 | } | |
1381 | ||
1382 | for (i = 0; i < num_to_alloc; i++) { | |
2e0fef85 | 1383 | scsi_buf = lpfc_new_scsi_buf(vport); |
dea3101e | 1384 | if (!scsi_buf) { |
e8b62011 JS |
1385 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1386 | "0706 Failed to allocate " | |
1387 | "command buffer\n"); | |
dea3101e | 1388 | break; |
1389 | } | |
1390 | ||
875fbdfe | 1391 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e | 1392 | phba->total_scsi_bufs++; |
1393 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 1394 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e | 1395 | } |
1396 | return 0; | |
1397 | } | |
1398 | ||
1399 | static int | |
1400 | lpfc_slave_configure(struct scsi_device *sdev) | |
1401 | { | |
2e0fef85 JS |
1402 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1403 | struct lpfc_hba *phba = vport->phba; | |
1404 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e | 1405 | |
1406 | if (sdev->tagged_supported) | |
3de2a653 | 1407 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 1408 | else |
3de2a653 | 1409 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 1410 | |
1411 | /* | |
1412 | * Initialize the fc transport attributes for the target | |
1413 | * containing this scsi device. Also note that the driver's | |
1414 | * target pointer is stored in the starget_data for the | |
1415 | * driver's sysfs entry point functions. | |
1416 | */ | |
3de2a653 | 1417 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 1418 | |
875fbdfe JSEC |
1419 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
1420 | lpfc_sli_poll_fcp_ring(phba); | |
1421 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1422 | lpfc_poll_rearm_timer(phba); | |
1423 | } | |
1424 | ||
dea3101e | 1425 | return 0; |
1426 | } | |
1427 | ||
1428 | static void | |
1429 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1430 | { | |
1431 | sdev->hostdata = NULL; | |
1432 | return; | |
1433 | } | |
1434 | ||
92d7f7b0 | 1435 | |
dea3101e | 1436 | struct scsi_host_template lpfc_template = { |
1437 | .module = THIS_MODULE, | |
1438 | .name = LPFC_DRIVER_NAME, | |
1439 | .info = lpfc_info, | |
1440 | .queuecommand = lpfc_queuecommand, | |
1441 | .eh_abort_handler = lpfc_abort_handler, | |
7054a606 JS |
1442 | .eh_device_reset_handler= lpfc_device_reset_handler, |
1443 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
dea3101e | 1444 | .slave_alloc = lpfc_slave_alloc, |
1445 | .slave_configure = lpfc_slave_configure, | |
1446 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 1447 | .scan_finished = lpfc_scan_finished, |
dea3101e | 1448 | .this_id = -1, |
1449 | .sg_tablesize = LPFC_SG_SEG_CNT, | |
1450 | .cmd_per_lun = LPFC_CMD_PER_LUN, | |
1451 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 1452 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 1453 | .max_sectors = 0xFFFF, |
dea3101e | 1454 | }; |
3de2a653 JS |
1455 | |
1456 | struct scsi_host_template lpfc_vport_template = { | |
1457 | .module = THIS_MODULE, | |
1458 | .name = LPFC_DRIVER_NAME, | |
1459 | .info = lpfc_info, | |
1460 | .queuecommand = lpfc_queuecommand, | |
1461 | .eh_abort_handler = lpfc_abort_handler, | |
1462 | .eh_device_reset_handler= lpfc_device_reset_handler, | |
1463 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
1464 | .slave_alloc = lpfc_slave_alloc, | |
1465 | .slave_configure = lpfc_slave_configure, | |
1466 | .slave_destroy = lpfc_slave_destroy, | |
1467 | .scan_finished = lpfc_scan_finished, | |
1468 | .this_id = -1, | |
1469 | .sg_tablesize = LPFC_SG_SEG_CNT, | |
1470 | .cmd_per_lun = LPFC_CMD_PER_LUN, | |
1471 | .use_clustering = ENABLE_CLUSTERING, | |
1472 | .shost_attrs = lpfc_vport_attrs, | |
1473 | .max_sectors = 0xFFFF, | |
1474 | }; |