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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
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 JB |
8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e JB |
20 | *******************************************************************/ |
21 | ||
dea3101e JB |
22 | #include <linux/pci.h> |
23 | #include <linux/interrupt.h> | |
a90f5684 | 24 | #include <linux/delay.h> |
dea3101e JB |
25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
28 | #include <scsi/scsi_host.h> | |
29 | #include <scsi/scsi_tcq.h> | |
30 | #include <scsi/scsi_transport_fc.h> | |
31 | ||
32 | #include "lpfc_version.h" | |
33 | #include "lpfc_hw.h" | |
34 | #include "lpfc_sli.h" | |
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 JB |
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 | |
87 | lpfc_rampup_queue_depth(struct lpfc_hba *phba, | |
88 | struct scsi_device *sdev) | |
89 | { | |
90 | unsigned long flags; | |
91 | atomic_inc(&phba->num_cmd_success); | |
92 | ||
93 | if (phba->cfg_lun_queue_depth <= sdev->queue_depth) | |
94 | return; | |
95 | ||
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 | } | |
102 | ||
103 | phba->last_ramp_up_time = jiffies; | |
104 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
105 | ||
106 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
107 | if ((phba->pport->work_port_events & | |
108 | WORKER_RAMP_UP_QUEUE) == 0) { | |
109 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; | |
110 | } | |
111 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); | |
112 | ||
113 | spin_lock_irqsave(&phba->hbalock, flags); | |
114 | if (phba->work_wait) | |
115 | wake_up(phba->work_wait); | |
116 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
117 | } | |
118 | ||
119 | void | |
120 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
121 | { | |
122 | struct lpfc_vport *vport; | |
123 | struct Scsi_Host *host; | |
124 | struct scsi_device *sdev; | |
125 | unsigned long new_queue_depth; | |
126 | unsigned long num_rsrc_err, num_cmd_success; | |
127 | ||
128 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
129 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
130 | ||
131 | spin_lock_irq(&phba->hbalock); | |
132 | list_for_each_entry(vport, &phba->port_list, listentry) { | |
133 | host = lpfc_shost_from_vport(vport); | |
134 | if (!scsi_host_get(host)) | |
135 | continue; | |
136 | ||
137 | spin_unlock_irq(&phba->hbalock); | |
138 | ||
139 | shost_for_each_device(sdev, host) { | |
140 | new_queue_depth = sdev->queue_depth * num_rsrc_err / | |
141 | (num_rsrc_err + num_cmd_success); | |
142 | if (!new_queue_depth) | |
143 | new_queue_depth = sdev->queue_depth - 1; | |
144 | else | |
145 | new_queue_depth = | |
146 | sdev->queue_depth - new_queue_depth; | |
147 | ||
148 | if (sdev->ordered_tags) | |
149 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, | |
150 | new_queue_depth); | |
151 | else | |
152 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, | |
153 | new_queue_depth); | |
154 | } | |
155 | spin_lock_irq(&phba->hbalock); | |
156 | scsi_host_put(host); | |
157 | } | |
158 | spin_unlock_irq(&phba->hbalock); | |
159 | atomic_set(&phba->num_rsrc_err, 0); | |
160 | atomic_set(&phba->num_cmd_success, 0); | |
161 | } | |
162 | ||
163 | void | |
164 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
165 | { | |
166 | struct lpfc_vport *vport; | |
167 | struct Scsi_Host *host; | |
168 | struct scsi_device *sdev; | |
169 | ||
170 | spin_lock_irq(&phba->hbalock); | |
171 | list_for_each_entry(vport, &phba->port_list, listentry) { | |
172 | host = lpfc_shost_from_vport(vport); | |
173 | if (!scsi_host_get(host)) | |
174 | continue; | |
175 | ||
176 | spin_unlock_irq(&phba->hbalock); | |
177 | shost_for_each_device(sdev, host) { | |
178 | if (sdev->ordered_tags) | |
179 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, | |
180 | sdev->queue_depth+1); | |
181 | else | |
182 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, | |
183 | sdev->queue_depth+1); | |
184 | } | |
185 | spin_lock_irq(&phba->hbalock); | |
186 | scsi_host_put(host); | |
187 | } | |
188 | spin_unlock_irq(&phba->hbalock); | |
189 | atomic_set(&phba->num_rsrc_err, 0); | |
190 | atomic_set(&phba->num_cmd_success, 0); | |
191 | } | |
192 | ||
dea3101e JB |
193 | /* |
194 | * This routine allocates a scsi buffer, which contains all the necessary | |
195 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
196 | * contains information to build the IOCB. The DMAable region contains | |
197 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
198 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
199 | * and the BPL BDE is setup in the IOCB. | |
200 | */ | |
201 | static struct lpfc_scsi_buf * | |
2e0fef85 | 202 | lpfc_new_scsi_buf(struct lpfc_vport *vport) |
dea3101e | 203 | { |
2e0fef85 | 204 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
205 | struct lpfc_scsi_buf *psb; |
206 | struct ulp_bde64 *bpl; | |
207 | IOCB_t *iocb; | |
208 | dma_addr_t pdma_phys; | |
604a3e30 | 209 | uint16_t iotag; |
dea3101e JB |
210 | |
211 | psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
212 | if (!psb) | |
213 | return NULL; | |
214 | memset(psb, 0, sizeof (struct lpfc_scsi_buf)); | |
dea3101e JB |
215 | |
216 | /* | |
217 | * Get memory from the pci pool to map the virt space to pci bus space | |
218 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
219 | * struct fcp_rsp and the number of bde's necessary to support the | |
220 | * sg_tablesize. | |
221 | */ | |
222 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
223 | &psb->dma_handle); | |
224 | if (!psb->data) { | |
225 | kfree(psb); | |
226 | return NULL; | |
227 | } | |
228 | ||
229 | /* Initialize virtual ptrs to dma_buf region. */ | |
230 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
231 | ||
604a3e30 JB |
232 | /* Allocate iotag for psb->cur_iocbq. */ |
233 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
234 | if (iotag == 0) { | |
235 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
236 | psb->data, psb->dma_handle); | |
237 | kfree (psb); | |
238 | return NULL; | |
239 | } | |
0bd4ca25 | 240 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 241 | |
dea3101e JB |
242 | psb->fcp_cmnd = psb->data; |
243 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
244 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
245 | sizeof(struct fcp_rsp); | |
246 | ||
247 | /* Initialize local short-hand pointers. */ | |
248 | bpl = psb->fcp_bpl; | |
249 | pdma_phys = psb->dma_handle; | |
250 | ||
251 | /* | |
252 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
253 | * list bdes. Initialize the first two and leave the rest for | |
254 | * queuecommand. | |
255 | */ | |
256 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
257 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
258 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); | |
259 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; | |
260 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
261 | bpl++; | |
262 | ||
263 | /* Setup the physical region for the FCP RSP */ | |
264 | pdma_phys += sizeof (struct fcp_cmnd); | |
265 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
266 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
267 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); | |
268 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); | |
269 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
270 | ||
271 | /* | |
272 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
273 | * initialize it with all known data now. | |
274 | */ | |
275 | pdma_phys += (sizeof (struct fcp_rsp)); | |
276 | iocb = &psb->cur_iocbq.iocb; | |
277 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
278 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); | |
279 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); | |
280 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); | |
281 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; | |
282 | iocb->ulpBdeCount = 1; | |
283 | iocb->ulpClass = CLASS3; | |
284 | ||
285 | return psb; | |
286 | } | |
287 | ||
455c53ec | 288 | static struct lpfc_scsi_buf* |
875fbdfe | 289 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 290 | { |
0bd4ca25 JSEC |
291 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
292 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 293 | unsigned long iflag = 0; |
0bd4ca25 | 294 | |
875fbdfe | 295 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 296 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
297 | if (lpfc_cmd) { |
298 | lpfc_cmd->seg_cnt = 0; | |
299 | lpfc_cmd->nonsg_phys = 0; | |
300 | } | |
875fbdfe | 301 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
302 | return lpfc_cmd; |
303 | } | |
dea3101e | 304 | |
0bd4ca25 | 305 | static void |
92d7f7b0 | 306 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 307 | { |
875fbdfe | 308 | unsigned long iflag = 0; |
dea3101e | 309 | |
875fbdfe | 310 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 311 | psb->pCmd = NULL; |
dea3101e | 312 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 313 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e JB |
314 | } |
315 | ||
316 | static int | |
92d7f7b0 | 317 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e JB |
318 | { |
319 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
320 | struct scatterlist *sgel = NULL; | |
321 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
322 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
323 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
324 | dma_addr_t physaddr; | |
325 | uint32_t i, num_bde = 0; | |
a0b4f78f | 326 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e JB |
327 | |
328 | /* | |
329 | * There are three possibilities here - use scatter-gather segment, use | |
330 | * the single mapping, or neither. Start the lpfc command prep by | |
331 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
332 | * data bde entry. | |
333 | */ | |
334 | bpl += 2; | |
c59fd9eb | 335 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
336 | /* |
337 | * The driver stores the segment count returned from pci_map_sg | |
338 | * because this a count of dma-mappings used to map the use_sg | |
339 | * pages. They are not guaranteed to be the same for those | |
340 | * architectures that implement an IOMMU. | |
341 | */ | |
dea3101e | 342 | |
c59fd9eb FT |
343 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
344 | scsi_sg_count(scsi_cmnd), datadir); | |
345 | if (unlikely(!nseg)) | |
346 | return 1; | |
347 | ||
a0b4f78f | 348 | lpfc_cmd->seg_cnt = nseg; |
dea3101e JB |
349 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
350 | printk(KERN_ERR "%s: Too many sg segments from " | |
351 | "dma_map_sg. Config %d, seg_cnt %d", | |
352 | __FUNCTION__, phba->cfg_sg_seg_cnt, | |
353 | lpfc_cmd->seg_cnt); | |
a0b4f78f | 354 | scsi_dma_unmap(scsi_cmnd); |
dea3101e JB |
355 | return 1; |
356 | } | |
357 | ||
358 | /* | |
359 | * The driver established a maximum scatter-gather segment count | |
360 | * during probe that limits the number of sg elements in any | |
361 | * single scsi command. Just run through the seg_cnt and format | |
362 | * the bde's. | |
363 | */ | |
a0b4f78f | 364 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, i) { |
dea3101e JB |
365 | physaddr = sg_dma_address(sgel); |
366 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
367 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
368 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
369 | if (datadir == DMA_TO_DEVICE) | |
370 | bpl->tus.f.bdeFlags = 0; | |
371 | else | |
372 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
373 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
374 | bpl++; | |
dea3101e JB |
375 | num_bde++; |
376 | } | |
c59fd9eb | 377 | } |
dea3101e JB |
378 | |
379 | /* | |
380 | * Finish initializing those IOCB fields that are dependent on the | |
483f05f0 JSEC |
381 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly |
382 | * reinitialized since all iocb memory resources are used many times | |
383 | * for transmit, receive, and continuation bpl's. | |
dea3101e | 384 | */ |
483f05f0 | 385 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
dea3101e JB |
386 | iocb_cmd->un.fcpi64.bdl.bdeSize += |
387 | (num_bde * sizeof (struct ulp_bde64)); | |
388 | iocb_cmd->ulpBdeCount = 1; | |
389 | iocb_cmd->ulpLe = 1; | |
a0b4f78f | 390 | fcp_cmnd->fcpDl = be32_to_cpu(scsi_bufflen(scsi_cmnd)); |
dea3101e JB |
391 | return 0; |
392 | } | |
393 | ||
bcf4dbfa JS |
394 | static void |
395 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
396 | { | |
397 | /* | |
398 | * There are only two special cases to consider. (1) the scsi command | |
399 | * requested scatter-gather usage or (2) the scsi command allocated | |
400 | * a request buffer, but did not request use_sg. There is a third | |
401 | * case, but it does not require resource deallocation. | |
402 | */ | |
a0b4f78f FT |
403 | if (psb->seg_cnt > 0) |
404 | scsi_dma_unmap(psb->pCmd); | |
bcf4dbfa JS |
405 | } |
406 | ||
dea3101e | 407 | static void |
2e0fef85 JS |
408 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
409 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e JB |
410 | { |
411 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
412 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
413 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
2e0fef85 | 414 | struct lpfc_hba *phba = vport->phba; |
7054a606 | 415 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
92d7f7b0 | 416 | uint32_t vpi = vport->vpi; |
dea3101e JB |
417 | uint32_t resp_info = fcprsp->rspStatus2; |
418 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 419 | uint32_t *lp; |
dea3101e JB |
420 | uint32_t host_status = DID_OK; |
421 | uint32_t rsplen = 0; | |
c7743956 | 422 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e JB |
423 | |
424 | /* | |
425 | * If this is a task management command, there is no | |
426 | * scsi packet associated with this lpfc_cmd. The driver | |
427 | * consumes it. | |
428 | */ | |
429 | if (fcpcmd->fcpCntl2) { | |
430 | scsi_status = 0; | |
431 | goto out; | |
432 | } | |
433 | ||
c7743956 JS |
434 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
435 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
436 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
437 | snslen = SCSI_SENSE_BUFFERSIZE; | |
438 | ||
439 | if (resp_info & RSP_LEN_VALID) | |
440 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
441 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
442 | } | |
443 | lp = (uint32_t *)cmnd->sense_buffer; | |
444 | ||
445 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
446 | logit = LOG_FCP; | |
447 | ||
448 | lpfc_printf_log(phba, KERN_WARNING, logit, | |
92d7f7b0 | 449 | "%d (%d):0730 FCP command x%x failed: x%x SNS x%x x%x " |
c7743956 | 450 | "Data: x%x x%x x%x x%x x%x\n", |
92d7f7b0 | 451 | phba->brd_no, vpi, cmnd->cmnd[0], scsi_status, |
c7743956 | 452 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, |
dea3101e JB |
453 | be32_to_cpu(fcprsp->rspResId), |
454 | be32_to_cpu(fcprsp->rspSnsLen), | |
455 | be32_to_cpu(fcprsp->rspRspLen), | |
456 | fcprsp->rspInfo3); | |
457 | ||
458 | if (resp_info & RSP_LEN_VALID) { | |
459 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
460 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
461 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
462 | host_status = DID_ERROR; | |
463 | goto out; | |
464 | } | |
465 | } | |
466 | ||
a0b4f78f | 467 | scsi_set_resid(cmnd, 0); |
dea3101e | 468 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 469 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e JB |
470 | |
471 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
92d7f7b0 JS |
472 | "%d (%d):0716 FCP Read Underrun, expected %d, " |
473 | "residual %d Data: x%x x%x x%x\n", | |
474 | phba->brd_no, vpi, be32_to_cpu(fcpcmd->fcpDl), | |
a0b4f78f | 475 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], |
92d7f7b0 | 476 | cmnd->underflow); |
dea3101e | 477 | |
7054a606 JS |
478 | /* |
479 | * If there is an under run check if under run reported by | |
480 | * storage array is same as the under run reported by HBA. | |
481 | * If this is not same, there is a dropped frame. | |
482 | */ | |
483 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
484 | fcpi_parm && | |
a0b4f78f | 485 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
7054a606 | 486 | lpfc_printf_log(phba, KERN_WARNING, |
92d7f7b0 JS |
487 | LOG_FCP | LOG_FCP_ERROR, |
488 | "%d (%d):0735 FCP Read Check Error " | |
489 | "and Underrun Data: x%x x%x x%x x%x\n", | |
490 | phba->brd_no, vpi, | |
491 | be32_to_cpu(fcpcmd->fcpDl), | |
a0b4f78f FT |
492 | scsi_get_resid(cmnd), fcpi_parm, |
493 | cmnd->cmnd[0]); | |
494 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); | |
7054a606 JS |
495 | host_status = DID_ERROR; |
496 | } | |
dea3101e JB |
497 | /* |
498 | * The cmnd->underflow is the minimum number of bytes that must | |
499 | * be transfered for this command. Provided a sense condition | |
500 | * is not present, make sure the actual amount transferred is at | |
501 | * least the underflow value or fail. | |
502 | */ | |
503 | if (!(resp_info & SNS_LEN_VALID) && | |
504 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
505 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
506 | < cmnd->underflow)) { | |
dea3101e | 507 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
92d7f7b0 | 508 | "%d (%d):0717 FCP command x%x residual " |
dea3101e | 509 | "underrun converted to error " |
92d7f7b0 JS |
510 | "Data: x%x x%x x%x\n", |
511 | phba->brd_no, vpi, cmnd->cmnd[0], | |
d4bd4cd0 | 512 | scsi_bufflen(cmnd), |
a0b4f78f | 513 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e JB |
514 | host_status = DID_ERROR; |
515 | } | |
516 | } else if (resp_info & RESID_OVER) { | |
517 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
92d7f7b0 | 518 | "%d (%d):0720 FCP command x%x residual " |
dea3101e | 519 | "overrun error. Data: x%x x%x \n", |
92d7f7b0 | 520 | phba->brd_no, vpi, cmnd->cmnd[0], |
a0b4f78f | 521 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e JB |
522 | host_status = DID_ERROR; |
523 | ||
524 | /* | |
525 | * Check SLI validation that all the transfer was actually done | |
526 | * (fcpi_parm should be zero). Apply check only to reads. | |
527 | */ | |
528 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
529 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
c7743956 | 530 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
92d7f7b0 JS |
531 | "%d (%d):0734 FCP Read Check Error Data: " |
532 | "x%x x%x x%x x%x\n", | |
533 | phba->brd_no, vpi, | |
534 | be32_to_cpu(fcpcmd->fcpDl), | |
535 | be32_to_cpu(fcprsp->rspResId), | |
536 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 537 | host_status = DID_ERROR; |
a0b4f78f | 538 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e JB |
539 | } |
540 | ||
541 | out: | |
542 | cmnd->result = ScsiResult(host_status, scsi_status); | |
543 | } | |
544 | ||
545 | static void | |
546 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
547 | struct lpfc_iocbq *pIocbOut) | |
548 | { | |
549 | struct lpfc_scsi_buf *lpfc_cmd = | |
550 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 551 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e JB |
552 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
553 | struct lpfc_nodelist *pnode = rdata->pnode; | |
554 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
92d7f7b0 JS |
555 | uint32_t vpi = (lpfc_cmd->cur_iocbq.vport |
556 | ? lpfc_cmd->cur_iocbq.vport->vpi | |
557 | : 0); | |
445cf4f4 JSEC |
558 | int result; |
559 | struct scsi_device *sdev, *tmp_sdev; | |
560 | int depth = 0; | |
dea3101e JB |
561 | |
562 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
563 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
564 | ||
565 | if (lpfc_cmd->status) { | |
566 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
567 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
568 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
569 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
570 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
571 | ||
572 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
92d7f7b0 JS |
573 | "%d (%d):0729 FCP cmd x%x failed <%d/%d> " |
574 | "status: x%x result: x%x Data: x%x x%x\n", | |
575 | phba->brd_no, vpi, cmd->cmnd[0], | |
576 | cmd->device ? cmd->device->id : 0xffff, | |
577 | cmd->device ? cmd->device->lun : 0xffff, | |
578 | lpfc_cmd->status, lpfc_cmd->result, | |
579 | pIocbOut->iocb.ulpContext, | |
dea3101e JB |
580 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); |
581 | ||
582 | switch (lpfc_cmd->status) { | |
583 | case IOSTAT_FCP_RSP_ERROR: | |
584 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 585 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e JB |
586 | break; |
587 | case IOSTAT_NPORT_BSY: | |
588 | case IOSTAT_FABRIC_BSY: | |
589 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); | |
590 | break; | |
92d7f7b0 JS |
591 | case IOSTAT_LOCAL_REJECT: |
592 | if (lpfc_cmd->result == RJT_UNAVAIL_PERM || | |
593 | lpfc_cmd->result == IOERR_NO_RESOURCES || | |
594 | lpfc_cmd->result == RJT_LOGIN_REQUIRED) { | |
595 | cmd->result = ScsiResult(DID_REQUEUE, 0); | |
596 | break; | |
597 | } /* else: fall through */ | |
dea3101e JB |
598 | default: |
599 | cmd->result = ScsiResult(DID_ERROR, 0); | |
600 | break; | |
601 | } | |
602 | ||
19a7b4ae JSEC |
603 | if ((pnode == NULL ) |
604 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
605 | cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY); | |
dea3101e JB |
606 | } else { |
607 | cmd->result = ScsiResult(DID_OK, 0); | |
608 | } | |
609 | ||
610 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
611 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
612 | ||
613 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
92d7f7b0 JS |
614 | "%d (%d):0710 Iodone <%d/%d> cmd %p, error " |
615 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
616 | phba->brd_no, vpi, cmd->device->id, | |
dea3101e | 617 | cmd->device->lun, cmd, cmd->result, |
a0b4f78f FT |
618 | *lp, *(lp + 3), cmd->retries, |
619 | scsi_get_resid(cmd)); | |
dea3101e JB |
620 | } |
621 | ||
445cf4f4 JSEC |
622 | result = cmd->result; |
623 | sdev = cmd->device; | |
1dcb58e5 | 624 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
625 | cmd->scsi_done(cmd); |
626 | ||
b808608b JW |
627 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
628 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
629 | return; | |
630 | } | |
631 | ||
92d7f7b0 JS |
632 | |
633 | if (!result) | |
634 | lpfc_rampup_queue_depth(phba, sdev); | |
635 | ||
0c6ac8ef | 636 | if (!result && pnode != NULL && |
445cf4f4 JSEC |
637 | ((jiffies - pnode->last_ramp_up_time) > |
638 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
639 | ((jiffies - pnode->last_q_full_time) > | |
640 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
641 | (phba->cfg_lun_queue_depth > sdev->queue_depth)) { | |
642 | shost_for_each_device(tmp_sdev, sdev->host) { | |
643 | if (phba->cfg_lun_queue_depth > tmp_sdev->queue_depth) { | |
644 | if (tmp_sdev->id != sdev->id) | |
645 | continue; | |
646 | if (tmp_sdev->ordered_tags) | |
647 | scsi_adjust_queue_depth(tmp_sdev, | |
648 | MSG_ORDERED_TAG, | |
649 | tmp_sdev->queue_depth+1); | |
650 | else | |
651 | scsi_adjust_queue_depth(tmp_sdev, | |
652 | MSG_SIMPLE_TAG, | |
653 | tmp_sdev->queue_depth+1); | |
654 | ||
655 | pnode->last_ramp_up_time = jiffies; | |
656 | } | |
657 | } | |
658 | } | |
659 | ||
660 | /* | |
661 | * Check for queue full. If the lun is reporting queue full, then | |
662 | * back off the lun queue depth to prevent target overloads. | |
663 | */ | |
0c6ac8ef | 664 | if (result == SAM_STAT_TASK_SET_FULL && pnode != NULL) { |
445cf4f4 JSEC |
665 | pnode->last_q_full_time = jiffies; |
666 | ||
667 | shost_for_each_device(tmp_sdev, sdev->host) { | |
668 | if (tmp_sdev->id != sdev->id) | |
669 | continue; | |
670 | depth = scsi_track_queue_full(tmp_sdev, | |
671 | tmp_sdev->queue_depth - 1); | |
672 | } | |
673 | /* | |
2e0fef85 | 674 | * The queue depth cannot be lowered any more. |
445cf4f4 JSEC |
675 | * Modify the returned error code to store |
676 | * the final depth value set by | |
677 | * scsi_track_queue_full. | |
678 | */ | |
679 | if (depth == -1) | |
680 | depth = sdev->host->cmd_per_lun; | |
681 | ||
682 | if (depth) { | |
683 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
92d7f7b0 JS |
684 | "%d (%d):0711 detected queue full - " |
685 | "lun queue depth adjusted to %d.\n", | |
686 | phba->brd_no, vpi, depth); | |
445cf4f4 JSEC |
687 | } |
688 | } | |
689 | ||
0bd4ca25 | 690 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
691 | } |
692 | ||
693 | static void | |
2e0fef85 JS |
694 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
695 | struct lpfc_nodelist *pnode) | |
dea3101e | 696 | { |
2e0fef85 | 697 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
698 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
699 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
700 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
701 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
702 | int datadir = scsi_cmnd->sc_data_direction; | |
703 | ||
704 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; | |
69859dc4 JSEC |
705 | /* clear task management bits */ |
706 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 707 | |
91886523 JSEC |
708 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
709 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e JB |
710 | |
711 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
712 | ||
713 | if (scsi_cmnd->device->tagged_supported) { | |
714 | switch (scsi_cmnd->tag) { | |
715 | case HEAD_OF_QUEUE_TAG: | |
716 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
717 | break; | |
718 | case ORDERED_QUEUE_TAG: | |
719 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
720 | break; | |
721 | default: | |
722 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
723 | break; | |
724 | } | |
725 | } else | |
726 | fcp_cmnd->fcpCntl1 = 0; | |
727 | ||
728 | /* | |
729 | * There are three possibilities here - use scatter-gather segment, use | |
730 | * the single mapping, or neither. Start the lpfc command prep by | |
731 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
732 | * data bde entry. | |
733 | */ | |
a0b4f78f | 734 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
735 | if (datadir == DMA_TO_DEVICE) { |
736 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
737 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
738 | iocb_cmd->ulpPU = 0; | |
739 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
740 | phba->fc4OutputRequests++; | |
741 | } else { | |
742 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
743 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
a0b4f78f | 744 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
dea3101e JB |
745 | fcp_cmnd->fcpCntl3 = READ_DATA; |
746 | phba->fc4InputRequests++; | |
747 | } | |
748 | } else { | |
749 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
750 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
751 | iocb_cmd->ulpPU = 0; | |
752 | fcp_cmnd->fcpCntl3 = 0; | |
753 | phba->fc4ControlRequests++; | |
754 | } | |
755 | ||
756 | /* | |
757 | * Finish initializing those IOCB fields that are independent | |
758 | * of the scsi_cmnd request_buffer | |
759 | */ | |
760 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
761 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
762 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
763 | ||
764 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
765 | piocbq->context1 = lpfc_cmd; | |
766 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
767 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 768 | piocbq->vport = vport; |
dea3101e JB |
769 | } |
770 | ||
771 | static int | |
2e0fef85 | 772 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 773 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 774 | unsigned int lun, |
dea3101e JB |
775 | uint8_t task_mgmt_cmd) |
776 | { | |
dea3101e JB |
777 | struct lpfc_iocbq *piocbq; |
778 | IOCB_t *piocb; | |
779 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 780 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e JB |
781 | struct lpfc_nodelist *ndlp = rdata->pnode; |
782 | ||
19a7b4ae | 783 | if ((ndlp == NULL) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { |
dea3101e JB |
784 | return 0; |
785 | } | |
786 | ||
dea3101e | 787 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
788 | piocbq->vport = vport; |
789 | ||
dea3101e JB |
790 | piocb = &piocbq->iocb; |
791 | ||
792 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
420b630d | 793 | int_to_scsilun(lun, &lpfc_cmd->fcp_cmnd->fcp_lun); |
dea3101e JB |
794 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
795 | ||
796 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; | |
797 | ||
798 | piocb->ulpContext = ndlp->nlp_rpi; | |
799 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
800 | piocb->ulpFCP2Rcvy = 1; | |
801 | } | |
802 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
803 | ||
804 | /* ulpTimeout is only one byte */ | |
805 | if (lpfc_cmd->timeout > 0xff) { | |
806 | /* | |
807 | * Do not timeout the command at the firmware level. | |
808 | * The driver will provide the timeout mechanism. | |
809 | */ | |
810 | piocb->ulpTimeout = 0; | |
811 | } else { | |
812 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
813 | } | |
814 | ||
2e0fef85 | 815 | return 1; |
dea3101e JB |
816 | } |
817 | ||
7054a606 JS |
818 | static void |
819 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
820 | struct lpfc_iocbq *cmdiocbq, | |
821 | struct lpfc_iocbq *rspiocbq) | |
822 | { | |
823 | struct lpfc_scsi_buf *lpfc_cmd = | |
824 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
825 | if (lpfc_cmd) | |
826 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
827 | return; | |
828 | } | |
829 | ||
dea3101e | 830 | static int |
2e0fef85 | 831 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, |
420b630d JS |
832 | unsigned tgt_id, unsigned int lun, |
833 | struct lpfc_rport_data *rdata) | |
dea3101e | 834 | { |
2e0fef85 | 835 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 836 | struct lpfc_iocbq *iocbq; |
0bd4ca25 | 837 | struct lpfc_iocbq *iocbqrsp; |
dea3101e JB |
838 | int ret; |
839 | ||
f5603511 JS |
840 | if (!rdata->pnode) |
841 | return FAILED; | |
842 | ||
0b18ac42 | 843 | lpfc_cmd->rdata = rdata; |
2e0fef85 | 844 | ret = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, |
420b630d | 845 | FCP_TARGET_RESET); |
dea3101e JB |
846 | if (!ret) |
847 | return FAILED; | |
848 | ||
dea3101e | 849 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 JSEC |
850 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
851 | ||
dea3101e JB |
852 | if (!iocbqrsp) |
853 | return FAILED; | |
dea3101e | 854 | |
0b18ac42 JS |
855 | /* Issue Target Reset to TGT <num> */ |
856 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
92d7f7b0 | 857 | "%d (%d):0702 Issue Target Reset to TGT %d " |
0b18ac42 | 858 | "Data: x%x x%x\n", |
92d7f7b0 JS |
859 | phba->brd_no, vport->vpi, tgt_id, |
860 | rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
0b18ac42 | 861 | |
68876920 JSEC |
862 | ret = lpfc_sli_issue_iocb_wait(phba, |
863 | &phba->sli.ring[phba->sli.fcp_ring], | |
864 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 865 | if (ret != IOCB_SUCCESS) { |
7054a606 JS |
866 | if (ret == IOCB_TIMEDOUT) |
867 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
dea3101e | 868 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
dea3101e JB |
869 | } else { |
870 | ret = SUCCESS; | |
871 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
872 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
873 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
874 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
875 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
876 | } | |
877 | ||
604a3e30 | 878 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e JB |
879 | return ret; |
880 | } | |
881 | ||
dea3101e JB |
882 | const char * |
883 | lpfc_info(struct Scsi_Host *host) | |
884 | { | |
2e0fef85 JS |
885 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
886 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
887 | int len; |
888 | static char lpfcinfobuf[384]; | |
889 | ||
890 | memset(lpfcinfobuf,0,384); | |
891 | if (phba && phba->pcidev){ | |
892 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
893 | len = strlen(lpfcinfobuf); | |
894 | snprintf(lpfcinfobuf + len, | |
895 | 384-len, | |
896 | " on PCI bus %02x device %02x irq %d", | |
897 | phba->pcidev->bus->number, | |
898 | phba->pcidev->devfn, | |
899 | phba->pcidev->irq); | |
900 | len = strlen(lpfcinfobuf); | |
901 | if (phba->Port[0]) { | |
902 | snprintf(lpfcinfobuf + len, | |
903 | 384-len, | |
904 | " port %s", | |
905 | phba->Port); | |
906 | } | |
907 | } | |
908 | return lpfcinfobuf; | |
909 | } | |
910 | ||
875fbdfe JSEC |
911 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
912 | { | |
913 | unsigned long poll_tmo_expires = | |
914 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
915 | ||
916 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
917 | mod_timer(&phba->fcp_poll_timer, | |
918 | poll_tmo_expires); | |
919 | } | |
920 | ||
921 | void lpfc_poll_start_timer(struct lpfc_hba * phba) | |
922 | { | |
923 | lpfc_poll_rearm_timer(phba); | |
924 | } | |
925 | ||
926 | void lpfc_poll_timeout(unsigned long ptr) | |
927 | { | |
2e0fef85 | 928 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
929 | |
930 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
931 | lpfc_sli_poll_fcp_ring (phba); | |
932 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
933 | lpfc_poll_rearm_timer(phba); | |
934 | } | |
875fbdfe JSEC |
935 | } |
936 | ||
dea3101e JB |
937 | static int |
938 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
939 | { | |
2e0fef85 JS |
940 | struct Scsi_Host *shost = cmnd->device->host; |
941 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
942 | struct lpfc_hba *phba = vport->phba; | |
943 | struct lpfc_sli *psli = &phba->sli; | |
dea3101e JB |
944 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
945 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 946 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 947 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 948 | int err; |
dea3101e | 949 | |
19a7b4ae JSEC |
950 | err = fc_remote_port_chkready(rport); |
951 | if (err) { | |
952 | cmnd->result = err; | |
dea3101e JB |
953 | goto out_fail_command; |
954 | } | |
955 | ||
956 | /* | |
19a7b4ae JSEC |
957 | * Catch race where our node has transitioned, but the |
958 | * transport is still transitioning. | |
dea3101e | 959 | */ |
19a7b4ae JSEC |
960 | if (!ndlp) { |
961 | cmnd->result = ScsiResult(DID_BUS_BUSY, 0); | |
962 | goto out_fail_command; | |
dea3101e | 963 | } |
ed957684 | 964 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 965 | if (lpfc_cmd == NULL) { |
92d7f7b0 JS |
966 | lpfc_adjust_queue_depth(phba); |
967 | ||
1de933f3 | 968 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
92d7f7b0 JS |
969 | "%d (%d):0707 driver's buffer pool is empty, " |
970 | "IO busied\n", | |
971 | phba->brd_no, vport->vpi); | |
dea3101e JB |
972 | goto out_host_busy; |
973 | } | |
974 | ||
975 | /* | |
976 | * Store the midlayer's command structure for the completion phase | |
977 | * and complete the command initialization. | |
978 | */ | |
979 | lpfc_cmd->pCmd = cmnd; | |
980 | lpfc_cmd->rdata = rdata; | |
981 | lpfc_cmd->timeout = 0; | |
982 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
983 | cmnd->scsi_done = done; | |
984 | ||
985 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
986 | if (err) | |
987 | goto out_host_busy_free_buf; | |
988 | ||
2e0fef85 | 989 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e JB |
990 | |
991 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
92d7f7b0 | 992 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
dea3101e JB |
993 | if (err) |
994 | goto out_host_busy_free_buf; | |
875fbdfe JSEC |
995 | |
996 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
997 | lpfc_sli_poll_fcp_ring(phba); | |
998 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
999 | lpfc_poll_rearm_timer(phba); | |
1000 | } | |
1001 | ||
dea3101e JB |
1002 | return 0; |
1003 | ||
1004 | out_host_busy_free_buf: | |
bcf4dbfa | 1005 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 1006 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
1007 | out_host_busy: |
1008 | return SCSI_MLQUEUE_HOST_BUSY; | |
1009 | ||
1010 | out_fail_command: | |
1011 | done(cmnd); | |
1012 | return 0; | |
1013 | } | |
1014 | ||
a90f5684 JS |
1015 | static void |
1016 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
1017 | { | |
1018 | struct Scsi_Host *shost = cmnd->device->host; | |
1019 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1020 | ||
1021 | spin_lock_irq(shost->host_lock); | |
1022 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
1023 | spin_unlock_irq(shost->host_lock); | |
1024 | msleep(1000); | |
1025 | spin_lock_irq(shost->host_lock); | |
1026 | } | |
1027 | spin_unlock_irq(shost->host_lock); | |
1028 | return; | |
1029 | } | |
63c59c3b | 1030 | |
dea3101e | 1031 | static int |
63c59c3b | 1032 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1033 | { |
2e0fef85 JS |
1034 | struct Scsi_Host *shost = cmnd->device->host; |
1035 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1036 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1037 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
1038 | struct lpfc_iocbq *iocb; |
1039 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 1040 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 1041 | IOCB_t *cmd, *icmd; |
dea3101e | 1042 | unsigned int loop_count = 0; |
0bd4ca25 | 1043 | int ret = SUCCESS; |
dea3101e | 1044 | |
a90f5684 | 1045 | lpfc_block_error_handler(cmnd); |
0bd4ca25 JSEC |
1046 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
1047 | BUG_ON(!lpfc_cmd); | |
dea3101e | 1048 | |
0bd4ca25 JSEC |
1049 | /* |
1050 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
1051 | * points to a different SCSI command, then the driver has | |
1052 | * already completed this command, but the midlayer did not | |
1053 | * see the completion before the eh fired. Just return | |
1054 | * SUCCESS. | |
1055 | */ | |
1056 | iocb = &lpfc_cmd->cur_iocbq; | |
1057 | if (lpfc_cmd->pCmd != cmnd) | |
1058 | goto out; | |
dea3101e | 1059 | |
0bd4ca25 | 1060 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 1061 | |
0bd4ca25 JSEC |
1062 | abtsiocb = lpfc_sli_get_iocbq(phba); |
1063 | if (abtsiocb == NULL) { | |
1064 | ret = FAILED; | |
dea3101e JB |
1065 | goto out; |
1066 | } | |
1067 | ||
dea3101e | 1068 | /* |
0bd4ca25 JSEC |
1069 | * The scsi command can not be in txq and it is in flight because the |
1070 | * pCmd is still pointig at the SCSI command we have to abort. There | |
1071 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 1072 | */ |
dea3101e | 1073 | |
0bd4ca25 JSEC |
1074 | cmd = &iocb->iocb; |
1075 | icmd = &abtsiocb->iocb; | |
1076 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
1077 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
1078 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 1079 | |
0bd4ca25 JSEC |
1080 | icmd->ulpLe = 1; |
1081 | icmd->ulpClass = cmd->ulpClass; | |
2e0fef85 | 1082 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
1083 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
1084 | else | |
1085 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 1086 | |
0bd4ca25 | 1087 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 1088 | abtsiocb->vport = vport; |
0bd4ca25 JSEC |
1089 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
1090 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
1091 | ret = FAILED; | |
1092 | goto out; | |
1093 | } | |
dea3101e | 1094 | |
875fbdfe JSEC |
1095 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1096 | lpfc_sli_poll_fcp_ring (phba); | |
1097 | ||
0bd4ca25 JSEC |
1098 | /* Wait for abort to complete */ |
1099 | while (lpfc_cmd->pCmd == cmnd) | |
1100 | { | |
875fbdfe JSEC |
1101 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1102 | lpfc_sli_poll_fcp_ring (phba); | |
1103 | ||
2e0fef85 | 1104 | schedule_timeout_uninterruptible(LPFC_ABORT_WAIT * HZ); |
0bd4ca25 | 1105 | if (++loop_count |
c01f3208 | 1106 | > (2 * phba->cfg_devloss_tmo)/LPFC_ABORT_WAIT) |
0bd4ca25 JSEC |
1107 | break; |
1108 | } | |
dea3101e | 1109 | |
0bd4ca25 JSEC |
1110 | if (lpfc_cmd->pCmd == cmnd) { |
1111 | ret = FAILED; | |
1112 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
92d7f7b0 JS |
1113 | "%d (%d):0748 abort handler timed out waiting " |
1114 | "for abort to complete: ret %#x, ID %d, " | |
1115 | "LUN %d, snum %#lx\n", | |
1116 | phba->brd_no, vport->vpi, ret, | |
1117 | cmnd->device->id, cmnd->device->lun, | |
1118 | cmnd->serial_number); | |
dea3101e JB |
1119 | } |
1120 | ||
1121 | out: | |
1122 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
92d7f7b0 | 1123 | "%d (%d):0749 SCSI Layer I/O Abort Request " |
1de933f3 | 1124 | "Status x%x ID %d LUN %d snum %#lx\n", |
92d7f7b0 | 1125 | phba->brd_no, vport->vpi, ret, cmnd->device->id, |
0bd4ca25 | 1126 | cmnd->device->lun, cmnd->serial_number); |
dea3101e | 1127 | |
63c59c3b | 1128 | return ret; |
8fa728a2 JG |
1129 | } |
1130 | ||
dea3101e | 1131 | static int |
7054a606 | 1132 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1133 | { |
2e0fef85 JS |
1134 | struct Scsi_Host *shost = cmnd->device->host; |
1135 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1136 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
1137 | struct lpfc_scsi_buf *lpfc_cmd; |
1138 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e JB |
1139 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1140 | struct lpfc_nodelist *pnode = rdata->pnode; | |
6175c02a | 1141 | uint32_t cmd_result = 0, cmd_status = 0; |
dea3101e | 1142 | int ret = FAILED; |
7054a606 | 1143 | int iocb_status = IOCB_SUCCESS; |
dea3101e JB |
1144 | int cnt, loopcnt; |
1145 | ||
a90f5684 | 1146 | lpfc_block_error_handler(cmnd); |
f5603511 | 1147 | loopcnt = 0; |
dea3101e JB |
1148 | /* |
1149 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 1150 | * target is rediscovered or devloss timeout expires. |
dea3101e | 1151 | */ |
92d7f7b0 | 1152 | while (1) { |
dea3101e | 1153 | if (!pnode) |
7054a606 | 1154 | goto out; |
dea3101e JB |
1155 | |
1156 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
a9a3047d | 1157 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
f5603511 JS |
1158 | loopcnt++; |
1159 | rdata = cmnd->device->hostdata; | |
1160 | if (!rdata || | |
1161 | (loopcnt > ((phba->cfg_devloss_tmo * 2) + 1))) { | |
1162 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
92d7f7b0 JS |
1163 | "%d (%d):0721 LUN Reset rport " |
1164 | "failure: cnt x%x rdata x%p\n", | |
1165 | phba->brd_no, vport->vpi, | |
1166 | loopcnt, rdata); | |
f5603511 JS |
1167 | goto out; |
1168 | } | |
1169 | pnode = rdata->pnode; | |
1170 | if (!pnode) | |
7054a606 | 1171 | goto out; |
dea3101e | 1172 | } |
f5603511 | 1173 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e JB |
1174 | break; |
1175 | } | |
1176 | ||
2e0fef85 | 1177 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e JB |
1178 | if (lpfc_cmd == NULL) |
1179 | goto out; | |
1180 | ||
dea3101e | 1181 | lpfc_cmd->timeout = 60; |
0b18ac42 | 1182 | lpfc_cmd->rdata = rdata; |
dea3101e | 1183 | |
2e0fef85 | 1184 | ret = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, cmnd->device->lun, |
7054a606 | 1185 | FCP_TARGET_RESET); |
dea3101e JB |
1186 | if (!ret) |
1187 | goto out_free_scsi_buf; | |
1188 | ||
1189 | iocbq = &lpfc_cmd->cur_iocbq; | |
1190 | ||
1191 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 1192 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
dea3101e JB |
1193 | if (iocbqrsp == NULL) |
1194 | goto out_free_scsi_buf; | |
1195 | ||
0b18ac42 | 1196 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
92d7f7b0 JS |
1197 | "%d (%d):0703 Issue target reset to TGT %d LUN %d " |
1198 | "rpi x%x nlp_flag x%x\n", | |
1199 | phba->brd_no, vport->vpi, cmnd->device->id, | |
0b18ac42 JS |
1200 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); |
1201 | ||
7054a606 | 1202 | iocb_status = lpfc_sli_issue_iocb_wait(phba, |
68876920 JSEC |
1203 | &phba->sli.ring[phba->sli.fcp_ring], |
1204 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 1205 | |
7054a606 JS |
1206 | if (iocb_status == IOCB_TIMEDOUT) |
1207 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; | |
1208 | ||
1209 | if (iocb_status == IOCB_SUCCESS) | |
1210 | ret = SUCCESS; | |
1211 | else | |
1212 | ret = iocb_status; | |
6175c02a JSEC |
1213 | |
1214 | cmd_result = iocbqrsp->iocb.un.ulpWord[4]; | |
1215 | cmd_status = iocbqrsp->iocb.ulpStatus; | |
1216 | ||
1217 | lpfc_sli_release_iocbq(phba, iocbqrsp); | |
dea3101e JB |
1218 | |
1219 | /* | |
6175c02a | 1220 | * All outstanding txcmplq I/Os should have been aborted by the device. |
dea3101e JB |
1221 | * Unfortunately, some targets do not abide by this forcing the driver |
1222 | * to double check. | |
1223 | */ | |
6175c02a JSEC |
1224 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
1225 | cmnd->device->id, cmnd->device->lun, | |
1226 | LPFC_CTX_LUN); | |
1227 | if (cnt) | |
1228 | lpfc_sli_abort_iocb(phba, | |
1229 | &phba->sli.ring[phba->sli.fcp_ring], | |
1230 | cmnd->device->id, cmnd->device->lun, | |
1231 | 0, LPFC_CTX_LUN); | |
dea3101e | 1232 | loopcnt = 0; |
92d7f7b0 | 1233 | while(cnt) { |
a9a3047d | 1234 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
dea3101e JB |
1235 | |
1236 | if (++loopcnt | |
c01f3208 | 1237 | > (2 * phba->cfg_devloss_tmo)/LPFC_RESET_WAIT) |
dea3101e | 1238 | break; |
6175c02a JSEC |
1239 | |
1240 | cnt = lpfc_sli_sum_iocb(phba, | |
1241 | &phba->sli.ring[phba->sli.fcp_ring], | |
1242 | cmnd->device->id, cmnd->device->lun, | |
1243 | LPFC_CTX_LUN); | |
dea3101e JB |
1244 | } |
1245 | ||
1246 | if (cnt) { | |
0bd4ca25 | 1247 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
92d7f7b0 JS |
1248 | "%d (%d):0719 device reset I/O flush failure: " |
1249 | "cnt x%x\n", | |
1250 | phba->brd_no, vport->vpi, cnt); | |
0bd4ca25 | 1251 | ret = FAILED; |
dea3101e JB |
1252 | } |
1253 | ||
dea3101e | 1254 | out_free_scsi_buf: |
7054a606 JS |
1255 | if (iocb_status != IOCB_TIMEDOUT) { |
1256 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1257 | } | |
dea3101e | 1258 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
92d7f7b0 | 1259 | "%d (%d):0713 SCSI layer issued device reset (%d, %d) " |
7054a606 | 1260 | "return x%x status x%x result x%x\n", |
92d7f7b0 JS |
1261 | phba->brd_no, vport->vpi, cmnd->device->id, |
1262 | cmnd->device->lun, ret, cmd_status, cmd_result); | |
6175c02a | 1263 | |
dea3101e JB |
1264 | out: |
1265 | return ret; | |
1266 | } | |
1267 | ||
94d0e7b8 | 1268 | static int |
7054a606 | 1269 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1270 | { |
2e0fef85 JS |
1271 | struct Scsi_Host *shost = cmnd->device->host; |
1272 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1273 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
1274 | struct lpfc_nodelist *ndlp = NULL; |
1275 | int match; | |
1276 | int ret = FAILED, i, err_count = 0; | |
1277 | int cnt, loopcnt; | |
0bd4ca25 | 1278 | struct lpfc_scsi_buf * lpfc_cmd; |
dea3101e | 1279 | |
a90f5684 | 1280 | lpfc_block_error_handler(cmnd); |
63c59c3b | 1281 | |
875fbdfe | 1282 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e JB |
1283 | if (lpfc_cmd == NULL) |
1284 | goto out; | |
1285 | ||
1286 | /* The lpfc_cmd storage is reused. Set all loop invariants. */ | |
1287 | lpfc_cmd->timeout = 60; | |
dea3101e JB |
1288 | |
1289 | /* | |
1290 | * Since the driver manages a single bus device, reset all | |
1291 | * targets known to the driver. Should any target reset | |
1292 | * fail, this routine returns failure to the midlayer. | |
1293 | */ | |
e17da18e | 1294 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 1295 | /* Search for mapped node by target ID */ |
dea3101e | 1296 | match = 0; |
2e0fef85 JS |
1297 | spin_lock_irq(shost->host_lock); |
1298 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
685f0bf7 JS |
1299 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
1300 | i == ndlp->nlp_sid && | |
1301 | ndlp->rport) { | |
dea3101e JB |
1302 | match = 1; |
1303 | break; | |
1304 | } | |
1305 | } | |
2e0fef85 | 1306 | spin_unlock_irq(shost->host_lock); |
dea3101e JB |
1307 | if (!match) |
1308 | continue; | |
1309 | ||
2e0fef85 JS |
1310 | ret = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, |
1311 | cmnd->device->lun, | |
420b630d | 1312 | ndlp->rport->dd_data); |
dea3101e | 1313 | if (ret != SUCCESS) { |
6175c02a | 1314 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
92d7f7b0 JS |
1315 | "%d (%d):0700 Bus Reset on target %d " |
1316 | "failed\n", | |
1317 | phba->brd_no, vport->vpi, i); | |
dea3101e | 1318 | err_count++; |
7054a606 | 1319 | break; |
dea3101e JB |
1320 | } |
1321 | } | |
1322 | ||
7054a606 JS |
1323 | if (ret != IOCB_TIMEDOUT) |
1324 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1325 | ||
6175c02a JSEC |
1326 | if (err_count == 0) |
1327 | ret = SUCCESS; | |
7054a606 JS |
1328 | else |
1329 | ret = FAILED; | |
6175c02a JSEC |
1330 | |
1331 | /* | |
1332 | * All outstanding txcmplq I/Os should have been aborted by | |
1333 | * the targets. Unfortunately, some targets do not abide by | |
1334 | * this forcing the driver to double check. | |
1335 | */ | |
6175c02a JSEC |
1336 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
1337 | 0, 0, LPFC_CTX_HOST); | |
1338 | if (cnt) | |
1339 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], | |
1340 | 0, 0, 0, LPFC_CTX_HOST); | |
dea3101e | 1341 | loopcnt = 0; |
92d7f7b0 | 1342 | while(cnt) { |
a9a3047d | 1343 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
dea3101e JB |
1344 | |
1345 | if (++loopcnt | |
c01f3208 | 1346 | > (2 * phba->cfg_devloss_tmo)/LPFC_RESET_WAIT) |
dea3101e | 1347 | break; |
6175c02a JSEC |
1348 | |
1349 | cnt = lpfc_sli_sum_iocb(phba, | |
1350 | &phba->sli.ring[phba->sli.fcp_ring], | |
1351 | 0, 0, LPFC_CTX_HOST); | |
dea3101e JB |
1352 | } |
1353 | ||
1354 | if (cnt) { | |
6175c02a | 1355 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
92d7f7b0 JS |
1356 | "%d (%d):0715 Bus Reset I/O flush failure: " |
1357 | "cnt x%x left x%x\n", | |
1358 | phba->brd_no, vport->vpi, cnt, i); | |
0bd4ca25 | 1359 | ret = FAILED; |
6175c02a | 1360 | } |
dea3101e | 1361 | |
92d7f7b0 JS |
1362 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
1363 | "%d (%d):0714 SCSI layer issued Bus Reset Data: x%x\n", | |
1364 | phba->brd_no, vport->vpi, ret); | |
dea3101e JB |
1365 | out: |
1366 | return ret; | |
1367 | } | |
1368 | ||
1369 | static int | |
1370 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1371 | { | |
2e0fef85 JS |
1372 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1373 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1374 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1375 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e JB |
1376 | uint32_t total = 0, i; |
1377 | uint32_t num_to_alloc = 0; | |
1378 | unsigned long flags; | |
dea3101e | 1379 | |
19a7b4ae | 1380 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e JB |
1381 | return -ENXIO; |
1382 | ||
19a7b4ae | 1383 | sdev->hostdata = rport->dd_data; |
dea3101e JB |
1384 | |
1385 | /* | |
1386 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1387 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1388 | * HBA limit conveyed to the midlayer via the host structure. The |
1389 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1390 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e JB |
1391 | */ |
1392 | total = phba->total_scsi_bufs; | |
a784efbf | 1393 | num_to_alloc = phba->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
1394 | |
1395 | /* Allow some exchanges to be available always to complete discovery */ | |
1396 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
a784efbf | 1397 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
92d7f7b0 JS |
1398 | "%d (%d):0704 At limitation of %d " |
1399 | "preallocated command buffers\n", | |
1400 | phba->brd_no, vport->vpi, total); | |
dea3101e | 1401 | return 0; |
92d7f7b0 JS |
1402 | |
1403 | /* Allow some exchanges to be available always to complete discovery */ | |
1404 | } else if (total + num_to_alloc > | |
1405 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
a784efbf | 1406 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
92d7f7b0 JS |
1407 | "%d (%d):0705 Allocation request of %d " |
1408 | "command buffers will exceed max of %d. " | |
1409 | "Reducing allocation request to %d.\n", | |
1410 | phba->brd_no, vport->vpi, num_to_alloc, | |
1411 | phba->cfg_hba_queue_depth, | |
a784efbf | 1412 | (phba->cfg_hba_queue_depth - total)); |
dea3101e JB |
1413 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
1414 | } | |
1415 | ||
1416 | for (i = 0; i < num_to_alloc; i++) { | |
2e0fef85 | 1417 | scsi_buf = lpfc_new_scsi_buf(vport); |
dea3101e | 1418 | if (!scsi_buf) { |
a784efbf | 1419 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
92d7f7b0 JS |
1420 | "%d (%d):0706 Failed to allocate " |
1421 | "command buffer\n", | |
1422 | phba->brd_no, vport->vpi); | |
dea3101e JB |
1423 | break; |
1424 | } | |
1425 | ||
875fbdfe | 1426 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e JB |
1427 | phba->total_scsi_bufs++; |
1428 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 1429 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e JB |
1430 | } |
1431 | return 0; | |
1432 | } | |
1433 | ||
1434 | static int | |
1435 | lpfc_slave_configure(struct scsi_device *sdev) | |
1436 | { | |
2e0fef85 JS |
1437 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1438 | struct lpfc_hba *phba = vport->phba; | |
1439 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e JB |
1440 | |
1441 | if (sdev->tagged_supported) | |
1442 | scsi_activate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1443 | else | |
1444 | scsi_deactivate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1445 | ||
1446 | /* | |
1447 | * Initialize the fc transport attributes for the target | |
1448 | * containing this scsi device. Also note that the driver's | |
1449 | * target pointer is stored in the starget_data for the | |
1450 | * driver's sysfs entry point functions. | |
1451 | */ | |
c01f3208 | 1452 | rport->dev_loss_tmo = phba->cfg_devloss_tmo; |
dea3101e | 1453 | |
875fbdfe JSEC |
1454 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
1455 | lpfc_sli_poll_fcp_ring(phba); | |
1456 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1457 | lpfc_poll_rearm_timer(phba); | |
1458 | } | |
1459 | ||
dea3101e JB |
1460 | return 0; |
1461 | } | |
1462 | ||
1463 | static void | |
1464 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1465 | { | |
1466 | sdev->hostdata = NULL; | |
1467 | return; | |
1468 | } | |
1469 | ||
92d7f7b0 | 1470 | |
dea3101e JB |
1471 | struct scsi_host_template lpfc_template = { |
1472 | .module = THIS_MODULE, | |
1473 | .name = LPFC_DRIVER_NAME, | |
1474 | .info = lpfc_info, | |
1475 | .queuecommand = lpfc_queuecommand, | |
1476 | .eh_abort_handler = lpfc_abort_handler, | |
7054a606 JS |
1477 | .eh_device_reset_handler= lpfc_device_reset_handler, |
1478 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
dea3101e JB |
1479 | .slave_alloc = lpfc_slave_alloc, |
1480 | .slave_configure = lpfc_slave_configure, | |
1481 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 1482 | .scan_finished = lpfc_scan_finished, |
dea3101e JB |
1483 | .this_id = -1, |
1484 | .sg_tablesize = LPFC_SG_SEG_CNT, | |
1485 | .cmd_per_lun = LPFC_CMD_PER_LUN, | |
1486 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 1487 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 1488 | .max_sectors = 0xFFFF, |
dea3101e | 1489 | }; |