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dea3101e JB |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
e47c9093 | 4 | * Copyright (C) 2004-2008 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e JB |
8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e JB |
20 | *******************************************************************/ |
21 | ||
dea3101e JB |
22 | #include <linux/pci.h> |
23 | #include <linux/interrupt.h> | |
a90f5684 | 24 | #include <linux/delay.h> |
dea3101e JB |
25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
28 | #include <scsi/scsi_host.h> | |
29 | #include <scsi/scsi_tcq.h> | |
30 | #include <scsi/scsi_transport_fc.h> | |
31 | ||
32 | #include "lpfc_version.h" | |
33 | #include "lpfc_hw.h" | |
34 | #include "lpfc_sli.h" | |
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; | |
5e9d9b82 | 53 | uint32_t evt_posted; |
92d7f7b0 JS |
54 | |
55 | spin_lock_irqsave(&phba->hbalock, flags); | |
56 | atomic_inc(&phba->num_rsrc_err); | |
57 | phba->last_rsrc_error_time = jiffies; | |
58 | ||
59 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
60 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
61 | return; | |
62 | } | |
63 | ||
64 | phba->last_ramp_down_time = jiffies; | |
65 | ||
66 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
67 | ||
68 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
69 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
70 | if (!evt_posted) | |
92d7f7b0 | 71 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
72 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
73 | ||
5e9d9b82 JS |
74 | if (!evt_posted) |
75 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
76 | return; |
77 | } | |
78 | ||
79 | /* | |
80 | * This function is called with no lock held when there is a successful | |
81 | * SCSI command completion. | |
82 | */ | |
83 | static inline void | |
3de2a653 | 84 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
92d7f7b0 JS |
85 | struct scsi_device *sdev) |
86 | { | |
87 | unsigned long flags; | |
3de2a653 | 88 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 89 | uint32_t evt_posted; |
92d7f7b0 JS |
90 | atomic_inc(&phba->num_cmd_success); |
91 | ||
3de2a653 | 92 | if (vport->cfg_lun_queue_depth <= sdev->queue_depth) |
92d7f7b0 | 93 | return; |
92d7f7b0 JS |
94 | spin_lock_irqsave(&phba->hbalock, flags); |
95 | if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) || | |
96 | ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) { | |
97 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
98 | return; | |
99 | } | |
92d7f7b0 JS |
100 | phba->last_ramp_up_time = jiffies; |
101 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
102 | ||
103 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
104 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
105 | if (!evt_posted) | |
92d7f7b0 | 106 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
107 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
108 | ||
5e9d9b82 JS |
109 | if (!evt_posted) |
110 | lpfc_worker_wake_up(phba); | |
111 | return; | |
92d7f7b0 JS |
112 | } |
113 | ||
114 | void | |
115 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
116 | { | |
549e55cd JS |
117 | struct lpfc_vport **vports; |
118 | struct Scsi_Host *shost; | |
92d7f7b0 JS |
119 | struct scsi_device *sdev; |
120 | unsigned long new_queue_depth; | |
121 | unsigned long num_rsrc_err, num_cmd_success; | |
549e55cd | 122 | int i; |
92d7f7b0 JS |
123 | |
124 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
125 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
126 | ||
549e55cd JS |
127 | vports = lpfc_create_vport_work_array(phba); |
128 | if (vports != NULL) | |
09372820 | 129 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
130 | shost = lpfc_shost_from_vport(vports[i]); |
131 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 132 | new_queue_depth = |
549e55cd JS |
133 | sdev->queue_depth * num_rsrc_err / |
134 | (num_rsrc_err + num_cmd_success); | |
135 | if (!new_queue_depth) | |
136 | new_queue_depth = sdev->queue_depth - 1; | |
137 | else | |
138 | new_queue_depth = sdev->queue_depth - | |
139 | new_queue_depth; | |
140 | if (sdev->ordered_tags) | |
141 | scsi_adjust_queue_depth(sdev, | |
142 | MSG_ORDERED_TAG, | |
143 | new_queue_depth); | |
144 | else | |
145 | scsi_adjust_queue_depth(sdev, | |
146 | MSG_SIMPLE_TAG, | |
147 | new_queue_depth); | |
148 | } | |
92d7f7b0 | 149 | } |
09372820 | 150 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
151 | atomic_set(&phba->num_rsrc_err, 0); |
152 | atomic_set(&phba->num_cmd_success, 0); | |
153 | } | |
154 | ||
155 | void | |
156 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
157 | { | |
549e55cd JS |
158 | struct lpfc_vport **vports; |
159 | struct Scsi_Host *shost; | |
92d7f7b0 | 160 | struct scsi_device *sdev; |
549e55cd JS |
161 | int i; |
162 | ||
163 | vports = lpfc_create_vport_work_array(phba); | |
164 | if (vports != NULL) | |
09372820 | 165 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
166 | shost = lpfc_shost_from_vport(vports[i]); |
167 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
168 | if (vports[i]->cfg_lun_queue_depth <= |
169 | sdev->queue_depth) | |
170 | continue; | |
549e55cd JS |
171 | if (sdev->ordered_tags) |
172 | scsi_adjust_queue_depth(sdev, | |
173 | MSG_ORDERED_TAG, | |
174 | sdev->queue_depth+1); | |
175 | else | |
176 | scsi_adjust_queue_depth(sdev, | |
177 | MSG_SIMPLE_TAG, | |
178 | sdev->queue_depth+1); | |
179 | } | |
92d7f7b0 | 180 | } |
09372820 | 181 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
182 | atomic_set(&phba->num_rsrc_err, 0); |
183 | atomic_set(&phba->num_cmd_success, 0); | |
184 | } | |
185 | ||
dea3101e JB |
186 | /* |
187 | * This routine allocates a scsi buffer, which contains all the necessary | |
188 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
189 | * contains information to build the IOCB. The DMAable region contains | |
190 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
191 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
192 | * and the BPL BDE is setup in the IOCB. | |
193 | */ | |
194 | static struct lpfc_scsi_buf * | |
2e0fef85 | 195 | lpfc_new_scsi_buf(struct lpfc_vport *vport) |
dea3101e | 196 | { |
2e0fef85 | 197 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
198 | struct lpfc_scsi_buf *psb; |
199 | struct ulp_bde64 *bpl; | |
200 | IOCB_t *iocb; | |
201 | dma_addr_t pdma_phys; | |
604a3e30 | 202 | uint16_t iotag; |
dea3101e | 203 | |
bbfbbbc1 | 204 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); |
dea3101e JB |
205 | if (!psb) |
206 | return NULL; | |
dea3101e JB |
207 | |
208 | /* | |
209 | * Get memory from the pci pool to map the virt space to pci bus space | |
210 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
211 | * struct fcp_rsp and the number of bde's necessary to support the | |
212 | * sg_tablesize. | |
213 | */ | |
214 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
215 | &psb->dma_handle); | |
216 | if (!psb->data) { | |
217 | kfree(psb); | |
218 | return NULL; | |
219 | } | |
220 | ||
221 | /* Initialize virtual ptrs to dma_buf region. */ | |
222 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
223 | ||
604a3e30 JB |
224 | /* Allocate iotag for psb->cur_iocbq. */ |
225 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
226 | if (iotag == 0) { | |
227 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
228 | psb->data, psb->dma_handle); | |
229 | kfree (psb); | |
230 | return NULL; | |
231 | } | |
0bd4ca25 | 232 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 233 | |
dea3101e JB |
234 | psb->fcp_cmnd = psb->data; |
235 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
236 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
237 | sizeof(struct fcp_rsp); | |
238 | ||
239 | /* Initialize local short-hand pointers. */ | |
240 | bpl = psb->fcp_bpl; | |
241 | pdma_phys = psb->dma_handle; | |
242 | ||
243 | /* | |
244 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
245 | * list bdes. Initialize the first two and leave the rest for | |
246 | * queuecommand. | |
247 | */ | |
248 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
249 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
250 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); | |
251 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; | |
252 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
253 | bpl++; | |
254 | ||
255 | /* Setup the physical region for the FCP RSP */ | |
256 | pdma_phys += sizeof (struct fcp_cmnd); | |
257 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
258 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
259 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); | |
260 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); | |
261 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
262 | ||
263 | /* | |
264 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
265 | * initialize it with all known data now. | |
266 | */ | |
267 | pdma_phys += (sizeof (struct fcp_rsp)); | |
268 | iocb = &psb->cur_iocbq.iocb; | |
269 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
270 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); | |
271 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); | |
272 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); | |
273 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; | |
274 | iocb->ulpBdeCount = 1; | |
275 | iocb->ulpClass = CLASS3; | |
276 | ||
277 | return psb; | |
278 | } | |
279 | ||
455c53ec | 280 | static struct lpfc_scsi_buf* |
875fbdfe | 281 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 282 | { |
0bd4ca25 JSEC |
283 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
284 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 285 | unsigned long iflag = 0; |
0bd4ca25 | 286 | |
875fbdfe | 287 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 288 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
289 | if (lpfc_cmd) { |
290 | lpfc_cmd->seg_cnt = 0; | |
291 | lpfc_cmd->nonsg_phys = 0; | |
292 | } | |
875fbdfe | 293 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
294 | return lpfc_cmd; |
295 | } | |
dea3101e | 296 | |
0bd4ca25 | 297 | static void |
92d7f7b0 | 298 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 299 | { |
875fbdfe | 300 | unsigned long iflag = 0; |
dea3101e | 301 | |
875fbdfe | 302 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 303 | psb->pCmd = NULL; |
dea3101e | 304 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 305 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e JB |
306 | } |
307 | ||
308 | static int | |
92d7f7b0 | 309 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e JB |
310 | { |
311 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
312 | struct scatterlist *sgel = NULL; | |
313 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
314 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
315 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
316 | dma_addr_t physaddr; | |
317 | uint32_t i, num_bde = 0; | |
a0b4f78f | 318 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e JB |
319 | |
320 | /* | |
321 | * There are three possibilities here - use scatter-gather segment, use | |
322 | * the single mapping, or neither. Start the lpfc command prep by | |
323 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
324 | * data bde entry. | |
325 | */ | |
326 | bpl += 2; | |
c59fd9eb | 327 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
328 | /* |
329 | * The driver stores the segment count returned from pci_map_sg | |
330 | * because this a count of dma-mappings used to map the use_sg | |
331 | * pages. They are not guaranteed to be the same for those | |
332 | * architectures that implement an IOMMU. | |
333 | */ | |
dea3101e | 334 | |
c59fd9eb FT |
335 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
336 | scsi_sg_count(scsi_cmnd), datadir); | |
337 | if (unlikely(!nseg)) | |
338 | return 1; | |
339 | ||
a0b4f78f | 340 | lpfc_cmd->seg_cnt = nseg; |
dea3101e JB |
341 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
342 | printk(KERN_ERR "%s: Too many sg segments from " | |
343 | "dma_map_sg. Config %d, seg_cnt %d", | |
344 | __FUNCTION__, phba->cfg_sg_seg_cnt, | |
345 | lpfc_cmd->seg_cnt); | |
a0b4f78f | 346 | scsi_dma_unmap(scsi_cmnd); |
dea3101e JB |
347 | return 1; |
348 | } | |
349 | ||
350 | /* | |
351 | * The driver established a maximum scatter-gather segment count | |
352 | * during probe that limits the number of sg elements in any | |
353 | * single scsi command. Just run through the seg_cnt and format | |
354 | * the bde's. | |
355 | */ | |
a0b4f78f | 356 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, i) { |
dea3101e JB |
357 | physaddr = sg_dma_address(sgel); |
358 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
359 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
360 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
361 | if (datadir == DMA_TO_DEVICE) | |
362 | bpl->tus.f.bdeFlags = 0; | |
363 | else | |
364 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
365 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
366 | bpl++; | |
dea3101e JB |
367 | num_bde++; |
368 | } | |
c59fd9eb | 369 | } |
dea3101e JB |
370 | |
371 | /* | |
372 | * Finish initializing those IOCB fields that are dependent on the | |
483f05f0 JSEC |
373 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly |
374 | * reinitialized since all iocb memory resources are used many times | |
375 | * for transmit, receive, and continuation bpl's. | |
dea3101e | 376 | */ |
483f05f0 | 377 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
dea3101e JB |
378 | iocb_cmd->un.fcpi64.bdl.bdeSize += |
379 | (num_bde * sizeof (struct ulp_bde64)); | |
380 | iocb_cmd->ulpBdeCount = 1; | |
381 | iocb_cmd->ulpLe = 1; | |
09372820 | 382 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
dea3101e JB |
383 | return 0; |
384 | } | |
385 | ||
bcf4dbfa JS |
386 | static void |
387 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
388 | { | |
389 | /* | |
390 | * There are only two special cases to consider. (1) the scsi command | |
391 | * requested scatter-gather usage or (2) the scsi command allocated | |
392 | * a request buffer, but did not request use_sg. There is a third | |
393 | * case, but it does not require resource deallocation. | |
394 | */ | |
a0b4f78f FT |
395 | if (psb->seg_cnt > 0) |
396 | scsi_dma_unmap(psb->pCmd); | |
bcf4dbfa JS |
397 | } |
398 | ||
dea3101e | 399 | static void |
2e0fef85 JS |
400 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
401 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e JB |
402 | { |
403 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
404 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
405 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 406 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e JB |
407 | uint32_t resp_info = fcprsp->rspStatus2; |
408 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 409 | uint32_t *lp; |
dea3101e JB |
410 | uint32_t host_status = DID_OK; |
411 | uint32_t rsplen = 0; | |
c7743956 | 412 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e JB |
413 | |
414 | /* | |
415 | * If this is a task management command, there is no | |
416 | * scsi packet associated with this lpfc_cmd. The driver | |
417 | * consumes it. | |
418 | */ | |
419 | if (fcpcmd->fcpCntl2) { | |
420 | scsi_status = 0; | |
421 | goto out; | |
422 | } | |
423 | ||
c7743956 JS |
424 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
425 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
426 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
427 | snslen = SCSI_SENSE_BUFFERSIZE; | |
428 | ||
429 | if (resp_info & RSP_LEN_VALID) | |
430 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
431 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
432 | } | |
433 | lp = (uint32_t *)cmnd->sense_buffer; | |
434 | ||
435 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
436 | logit = LOG_FCP; | |
437 | ||
e8b62011 JS |
438 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
439 | "0730 FCP command x%x failed: x%x SNS x%x x%x " | |
440 | "Data: x%x x%x x%x x%x x%x\n", | |
441 | cmnd->cmnd[0], scsi_status, | |
442 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
443 | be32_to_cpu(fcprsp->rspResId), | |
444 | be32_to_cpu(fcprsp->rspSnsLen), | |
445 | be32_to_cpu(fcprsp->rspRspLen), | |
446 | fcprsp->rspInfo3); | |
dea3101e JB |
447 | |
448 | if (resp_info & RSP_LEN_VALID) { | |
449 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
450 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
451 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
452 | host_status = DID_ERROR; | |
453 | goto out; | |
454 | } | |
455 | } | |
456 | ||
a0b4f78f | 457 | scsi_set_resid(cmnd, 0); |
dea3101e | 458 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 459 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 460 | |
e8b62011 JS |
461 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
462 | "0716 FCP Read Underrun, expected %d, " | |
463 | "residual %d Data: x%x x%x x%x\n", | |
464 | be32_to_cpu(fcpcmd->fcpDl), | |
465 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
466 | cmnd->underflow); | |
dea3101e | 467 | |
7054a606 JS |
468 | /* |
469 | * If there is an under run check if under run reported by | |
470 | * storage array is same as the under run reported by HBA. | |
471 | * If this is not same, there is a dropped frame. | |
472 | */ | |
473 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
474 | fcpi_parm && | |
a0b4f78f | 475 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
476 | lpfc_printf_vlog(vport, KERN_WARNING, |
477 | LOG_FCP | LOG_FCP_ERROR, | |
478 | "0735 FCP Read Check Error " | |
479 | "and Underrun Data: x%x x%x x%x x%x\n", | |
480 | be32_to_cpu(fcpcmd->fcpDl), | |
481 | scsi_get_resid(cmnd), fcpi_parm, | |
482 | cmnd->cmnd[0]); | |
a0b4f78f | 483 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
484 | host_status = DID_ERROR; |
485 | } | |
dea3101e JB |
486 | /* |
487 | * The cmnd->underflow is the minimum number of bytes that must | |
488 | * be transfered for this command. Provided a sense condition | |
489 | * is not present, make sure the actual amount transferred is at | |
490 | * least the underflow value or fail. | |
491 | */ | |
492 | if (!(resp_info & SNS_LEN_VALID) && | |
493 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
494 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
495 | < cmnd->underflow)) { | |
e8b62011 JS |
496 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
497 | "0717 FCP command x%x residual " | |
498 | "underrun converted to error " | |
499 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 500 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 501 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e JB |
502 | host_status = DID_ERROR; |
503 | } | |
504 | } else if (resp_info & RESID_OVER) { | |
e8b62011 JS |
505 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
506 | "0720 FCP command x%x residual overrun error. " | |
507 | "Data: x%x x%x \n", cmnd->cmnd[0], | |
508 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); | |
dea3101e JB |
509 | host_status = DID_ERROR; |
510 | ||
511 | /* | |
512 | * Check SLI validation that all the transfer was actually done | |
513 | * (fcpi_parm should be zero). Apply check only to reads. | |
514 | */ | |
515 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
516 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 JS |
517 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
518 | "0734 FCP Read Check Error Data: " | |
519 | "x%x x%x x%x x%x\n", | |
520 | be32_to_cpu(fcpcmd->fcpDl), | |
521 | be32_to_cpu(fcprsp->rspResId), | |
522 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 523 | host_status = DID_ERROR; |
a0b4f78f | 524 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e JB |
525 | } |
526 | ||
527 | out: | |
528 | cmnd->result = ScsiResult(host_status, scsi_status); | |
529 | } | |
530 | ||
531 | static void | |
532 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
533 | struct lpfc_iocbq *pIocbOut) | |
534 | { | |
535 | struct lpfc_scsi_buf *lpfc_cmd = | |
536 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 537 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e JB |
538 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
539 | struct lpfc_nodelist *pnode = rdata->pnode; | |
540 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 JSEC |
541 | int result; |
542 | struct scsi_device *sdev, *tmp_sdev; | |
543 | int depth = 0; | |
fa61a54e | 544 | unsigned long flags; |
dea3101e JB |
545 | |
546 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
547 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
548 | ||
549 | if (lpfc_cmd->status) { | |
550 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
551 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
552 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
553 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
554 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
555 | ||
e8b62011 JS |
556 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
557 | "0729 FCP cmd x%x failed <%d/%d> " | |
558 | "status: x%x result: x%x Data: x%x x%x\n", | |
559 | cmd->cmnd[0], | |
560 | cmd->device ? cmd->device->id : 0xffff, | |
561 | cmd->device ? cmd->device->lun : 0xffff, | |
562 | lpfc_cmd->status, lpfc_cmd->result, | |
563 | pIocbOut->iocb.ulpContext, | |
564 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e JB |
565 | |
566 | switch (lpfc_cmd->status) { | |
567 | case IOSTAT_FCP_RSP_ERROR: | |
568 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 569 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e JB |
570 | break; |
571 | case IOSTAT_NPORT_BSY: | |
572 | case IOSTAT_FABRIC_BSY: | |
573 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); | |
574 | break; | |
92d7f7b0 JS |
575 | case IOSTAT_LOCAL_REJECT: |
576 | if (lpfc_cmd->result == RJT_UNAVAIL_PERM || | |
577 | lpfc_cmd->result == IOERR_NO_RESOURCES || | |
578 | lpfc_cmd->result == RJT_LOGIN_REQUIRED) { | |
579 | cmd->result = ScsiResult(DID_REQUEUE, 0); | |
58da1ffb JS |
580 | break; |
581 | } /* else: fall through */ | |
dea3101e JB |
582 | default: |
583 | cmd->result = ScsiResult(DID_ERROR, 0); | |
584 | break; | |
585 | } | |
586 | ||
58da1ffb | 587 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae JSEC |
588 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
589 | cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY); | |
dea3101e JB |
590 | } else { |
591 | cmd->result = ScsiResult(DID_OK, 0); | |
592 | } | |
593 | ||
594 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
595 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
596 | ||
e8b62011 JS |
597 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
598 | "0710 Iodone <%d/%d> cmd %p, error " | |
599 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
600 | cmd->device->id, cmd->device->lun, cmd, | |
601 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
602 | scsi_get_resid(cmd)); | |
dea3101e JB |
603 | } |
604 | ||
445cf4f4 JSEC |
605 | result = cmd->result; |
606 | sdev = cmd->device; | |
1dcb58e5 | 607 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
608 | cmd->scsi_done(cmd); |
609 | ||
b808608b | 610 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
611 | /* |
612 | * If there is a thread waiting for command completion | |
613 | * wake up the thread. | |
614 | */ | |
615 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 616 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
617 | if (lpfc_cmd->waitq) |
618 | wake_up(lpfc_cmd->waitq); | |
619 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
b808608b JW |
620 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
621 | return; | |
622 | } | |
623 | ||
92d7f7b0 JS |
624 | |
625 | if (!result) | |
3de2a653 | 626 | lpfc_rampup_queue_depth(vport, sdev); |
92d7f7b0 | 627 | |
58da1ffb | 628 | if (!result && pnode && NLP_CHK_NODE_ACT(pnode) && |
445cf4f4 JSEC |
629 | ((jiffies - pnode->last_ramp_up_time) > |
630 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
631 | ((jiffies - pnode->last_q_full_time) > | |
632 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
3de2a653 | 633 | (vport->cfg_lun_queue_depth > sdev->queue_depth)) { |
445cf4f4 | 634 | shost_for_each_device(tmp_sdev, sdev->host) { |
3de2a653 | 635 | if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){ |
445cf4f4 JSEC |
636 | if (tmp_sdev->id != sdev->id) |
637 | continue; | |
638 | if (tmp_sdev->ordered_tags) | |
639 | scsi_adjust_queue_depth(tmp_sdev, | |
640 | MSG_ORDERED_TAG, | |
641 | tmp_sdev->queue_depth+1); | |
642 | else | |
643 | scsi_adjust_queue_depth(tmp_sdev, | |
644 | MSG_SIMPLE_TAG, | |
645 | tmp_sdev->queue_depth+1); | |
646 | ||
647 | pnode->last_ramp_up_time = jiffies; | |
648 | } | |
649 | } | |
650 | } | |
651 | ||
652 | /* | |
653 | * Check for queue full. If the lun is reporting queue full, then | |
654 | * back off the lun queue depth to prevent target overloads. | |
655 | */ | |
58da1ffb JS |
656 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
657 | NLP_CHK_NODE_ACT(pnode)) { | |
445cf4f4 JSEC |
658 | pnode->last_q_full_time = jiffies; |
659 | ||
660 | shost_for_each_device(tmp_sdev, sdev->host) { | |
661 | if (tmp_sdev->id != sdev->id) | |
662 | continue; | |
663 | depth = scsi_track_queue_full(tmp_sdev, | |
664 | tmp_sdev->queue_depth - 1); | |
665 | } | |
666 | /* | |
2e0fef85 | 667 | * The queue depth cannot be lowered any more. |
445cf4f4 JSEC |
668 | * Modify the returned error code to store |
669 | * the final depth value set by | |
670 | * scsi_track_queue_full. | |
671 | */ | |
672 | if (depth == -1) | |
673 | depth = sdev->host->cmd_per_lun; | |
674 | ||
675 | if (depth) { | |
e8b62011 JS |
676 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
677 | "0711 detected queue full - lun queue " | |
678 | "depth adjusted to %d.\n", depth); | |
445cf4f4 JSEC |
679 | } |
680 | } | |
681 | ||
fa61a54e JS |
682 | /* |
683 | * If there is a thread waiting for command completion | |
684 | * wake up the thread. | |
685 | */ | |
686 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 687 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
688 | if (lpfc_cmd->waitq) |
689 | wake_up(lpfc_cmd->waitq); | |
690 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
691 | ||
0bd4ca25 | 692 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
693 | } |
694 | ||
695 | static void | |
2e0fef85 JS |
696 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
697 | struct lpfc_nodelist *pnode) | |
dea3101e | 698 | { |
2e0fef85 | 699 | struct lpfc_hba *phba = vport->phba; |
dea3101e JB |
700 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
701 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
702 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
703 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
704 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 705 | char tag[2]; |
dea3101e | 706 | |
58da1ffb JS |
707 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
708 | return; | |
709 | ||
dea3101e | 710 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
711 | /* clear task management bits */ |
712 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 713 | |
91886523 JSEC |
714 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
715 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e JB |
716 | |
717 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
718 | ||
7e2b19fb JS |
719 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
720 | switch (tag[0]) { | |
dea3101e JB |
721 | case HEAD_OF_QUEUE_TAG: |
722 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
723 | break; | |
724 | case ORDERED_QUEUE_TAG: | |
725 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
726 | break; | |
727 | default: | |
728 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
729 | break; | |
730 | } | |
731 | } else | |
732 | fcp_cmnd->fcpCntl1 = 0; | |
733 | ||
734 | /* | |
735 | * There are three possibilities here - use scatter-gather segment, use | |
736 | * the single mapping, or neither. Start the lpfc command prep by | |
737 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
738 | * data bde entry. | |
739 | */ | |
a0b4f78f | 740 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e JB |
741 | if (datadir == DMA_TO_DEVICE) { |
742 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
743 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
744 | iocb_cmd->ulpPU = 0; | |
745 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
746 | phba->fc4OutputRequests++; | |
747 | } else { | |
748 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
749 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
a0b4f78f | 750 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
dea3101e JB |
751 | fcp_cmnd->fcpCntl3 = READ_DATA; |
752 | phba->fc4InputRequests++; | |
753 | } | |
754 | } else { | |
755 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
756 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
757 | iocb_cmd->ulpPU = 0; | |
758 | fcp_cmnd->fcpCntl3 = 0; | |
759 | phba->fc4ControlRequests++; | |
760 | } | |
761 | ||
762 | /* | |
763 | * Finish initializing those IOCB fields that are independent | |
764 | * of the scsi_cmnd request_buffer | |
765 | */ | |
766 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
767 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
768 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
769 | else |
770 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e JB |
771 | |
772 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
773 | piocbq->context1 = lpfc_cmd; | |
774 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
775 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 776 | piocbq->vport = vport; |
dea3101e JB |
777 | } |
778 | ||
779 | static int | |
2e0fef85 | 780 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 781 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 782 | unsigned int lun, |
dea3101e JB |
783 | uint8_t task_mgmt_cmd) |
784 | { | |
dea3101e JB |
785 | struct lpfc_iocbq *piocbq; |
786 | IOCB_t *piocb; | |
787 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 788 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e JB |
789 | struct lpfc_nodelist *ndlp = rdata->pnode; |
790 | ||
58da1ffb JS |
791 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
792 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 793 | return 0; |
dea3101e | 794 | |
dea3101e | 795 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
796 | piocbq->vport = vport; |
797 | ||
dea3101e JB |
798 | piocb = &piocbq->iocb; |
799 | ||
800 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
420b630d | 801 | int_to_scsilun(lun, &lpfc_cmd->fcp_cmnd->fcp_lun); |
dea3101e JB |
802 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
803 | ||
804 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; | |
805 | ||
806 | piocb->ulpContext = ndlp->nlp_rpi; | |
807 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
808 | piocb->ulpFCP2Rcvy = 1; | |
809 | } | |
810 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
811 | ||
812 | /* ulpTimeout is only one byte */ | |
813 | if (lpfc_cmd->timeout > 0xff) { | |
814 | /* | |
815 | * Do not timeout the command at the firmware level. | |
816 | * The driver will provide the timeout mechanism. | |
817 | */ | |
818 | piocb->ulpTimeout = 0; | |
819 | } else { | |
820 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
821 | } | |
822 | ||
2e0fef85 | 823 | return 1; |
dea3101e JB |
824 | } |
825 | ||
7054a606 JS |
826 | static void |
827 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
828 | struct lpfc_iocbq *cmdiocbq, | |
829 | struct lpfc_iocbq *rspiocbq) | |
830 | { | |
831 | struct lpfc_scsi_buf *lpfc_cmd = | |
832 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
833 | if (lpfc_cmd) | |
834 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
835 | return; | |
836 | } | |
837 | ||
dea3101e | 838 | static int |
2e0fef85 | 839 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, |
420b630d JS |
840 | unsigned tgt_id, unsigned int lun, |
841 | struct lpfc_rport_data *rdata) | |
dea3101e | 842 | { |
2e0fef85 | 843 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 844 | struct lpfc_iocbq *iocbq; |
0bd4ca25 | 845 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 846 | int ret; |
915caaaf | 847 | int status; |
dea3101e | 848 | |
58da1ffb | 849 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
f5603511 JS |
850 | return FAILED; |
851 | ||
0b18ac42 | 852 | lpfc_cmd->rdata = rdata; |
915caaaf | 853 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, |
420b630d | 854 | FCP_TARGET_RESET); |
915caaaf | 855 | if (!status) |
dea3101e JB |
856 | return FAILED; |
857 | ||
dea3101e | 858 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 JSEC |
859 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
860 | ||
dea3101e JB |
861 | if (!iocbqrsp) |
862 | return FAILED; | |
dea3101e | 863 | |
0b18ac42 | 864 | /* Issue Target Reset to TGT <num> */ |
e8b62011 JS |
865 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
866 | "0702 Issue Target Reset to TGT %d Data: x%x x%x\n", | |
867 | tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
915caaaf | 868 | status = lpfc_sli_issue_iocb_wait(phba, |
68876920 JSEC |
869 | &phba->sli.ring[phba->sli.fcp_ring], |
870 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
915caaaf JS |
871 | if (status != IOCB_SUCCESS) { |
872 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 873 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
874 | ret = TIMEOUT_ERROR; |
875 | } else | |
876 | ret = FAILED; | |
dea3101e | 877 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
dea3101e JB |
878 | } else { |
879 | ret = SUCCESS; | |
880 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
881 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
882 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
883 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
884 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
885 | } | |
886 | ||
604a3e30 | 887 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e JB |
888 | return ret; |
889 | } | |
890 | ||
dea3101e JB |
891 | const char * |
892 | lpfc_info(struct Scsi_Host *host) | |
893 | { | |
2e0fef85 JS |
894 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
895 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
896 | int len; |
897 | static char lpfcinfobuf[384]; | |
898 | ||
899 | memset(lpfcinfobuf,0,384); | |
900 | if (phba && phba->pcidev){ | |
901 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
902 | len = strlen(lpfcinfobuf); | |
903 | snprintf(lpfcinfobuf + len, | |
904 | 384-len, | |
905 | " on PCI bus %02x device %02x irq %d", | |
906 | phba->pcidev->bus->number, | |
907 | phba->pcidev->devfn, | |
908 | phba->pcidev->irq); | |
909 | len = strlen(lpfcinfobuf); | |
910 | if (phba->Port[0]) { | |
911 | snprintf(lpfcinfobuf + len, | |
912 | 384-len, | |
913 | " port %s", | |
914 | phba->Port); | |
915 | } | |
916 | } | |
917 | return lpfcinfobuf; | |
918 | } | |
919 | ||
875fbdfe JSEC |
920 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
921 | { | |
922 | unsigned long poll_tmo_expires = | |
923 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
924 | ||
925 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
926 | mod_timer(&phba->fcp_poll_timer, | |
927 | poll_tmo_expires); | |
928 | } | |
929 | ||
930 | void lpfc_poll_start_timer(struct lpfc_hba * phba) | |
931 | { | |
932 | lpfc_poll_rearm_timer(phba); | |
933 | } | |
934 | ||
935 | void lpfc_poll_timeout(unsigned long ptr) | |
936 | { | |
2e0fef85 | 937 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
938 | |
939 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
940 | lpfc_sli_poll_fcp_ring (phba); | |
941 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
942 | lpfc_poll_rearm_timer(phba); | |
943 | } | |
875fbdfe JSEC |
944 | } |
945 | ||
dea3101e JB |
946 | static int |
947 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
948 | { | |
2e0fef85 JS |
949 | struct Scsi_Host *shost = cmnd->device->host; |
950 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
951 | struct lpfc_hba *phba = vport->phba; | |
952 | struct lpfc_sli *psli = &phba->sli; | |
dea3101e JB |
953 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
954 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 955 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 956 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 957 | int err; |
dea3101e | 958 | |
19a7b4ae JSEC |
959 | err = fc_remote_port_chkready(rport); |
960 | if (err) { | |
961 | cmnd->result = err; | |
dea3101e JB |
962 | goto out_fail_command; |
963 | } | |
964 | ||
965 | /* | |
19a7b4ae JSEC |
966 | * Catch race where our node has transitioned, but the |
967 | * transport is still transitioning. | |
dea3101e | 968 | */ |
58da1ffb | 969 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
19a7b4ae JSEC |
970 | cmnd->result = ScsiResult(DID_BUS_BUSY, 0); |
971 | goto out_fail_command; | |
dea3101e | 972 | } |
ed957684 | 973 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 974 | if (lpfc_cmd == NULL) { |
92d7f7b0 JS |
975 | lpfc_adjust_queue_depth(phba); |
976 | ||
e8b62011 JS |
977 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
978 | "0707 driver's buffer pool is empty, " | |
979 | "IO busied\n"); | |
dea3101e JB |
980 | goto out_host_busy; |
981 | } | |
982 | ||
983 | /* | |
984 | * Store the midlayer's command structure for the completion phase | |
985 | * and complete the command initialization. | |
986 | */ | |
987 | lpfc_cmd->pCmd = cmnd; | |
988 | lpfc_cmd->rdata = rdata; | |
989 | lpfc_cmd->timeout = 0; | |
990 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
991 | cmnd->scsi_done = done; | |
992 | ||
993 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
994 | if (err) | |
995 | goto out_host_busy_free_buf; | |
996 | ||
2e0fef85 | 997 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e JB |
998 | |
999 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
92d7f7b0 | 1000 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
dea3101e JB |
1001 | if (err) |
1002 | goto out_host_busy_free_buf; | |
875fbdfe JSEC |
1003 | |
1004 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
1005 | lpfc_sli_poll_fcp_ring(phba); | |
1006 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1007 | lpfc_poll_rearm_timer(phba); | |
1008 | } | |
1009 | ||
dea3101e JB |
1010 | return 0; |
1011 | ||
1012 | out_host_busy_free_buf: | |
bcf4dbfa | 1013 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 1014 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e JB |
1015 | out_host_busy: |
1016 | return SCSI_MLQUEUE_HOST_BUSY; | |
1017 | ||
1018 | out_fail_command: | |
1019 | done(cmnd); | |
1020 | return 0; | |
1021 | } | |
1022 | ||
a90f5684 JS |
1023 | static void |
1024 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
1025 | { | |
1026 | struct Scsi_Host *shost = cmnd->device->host; | |
1027 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1028 | ||
1029 | spin_lock_irq(shost->host_lock); | |
1030 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
1031 | spin_unlock_irq(shost->host_lock); | |
1032 | msleep(1000); | |
1033 | spin_lock_irq(shost->host_lock); | |
1034 | } | |
1035 | spin_unlock_irq(shost->host_lock); | |
1036 | return; | |
1037 | } | |
63c59c3b | 1038 | |
dea3101e | 1039 | static int |
63c59c3b | 1040 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1041 | { |
2e0fef85 JS |
1042 | struct Scsi_Host *shost = cmnd->device->host; |
1043 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1044 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1045 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
1046 | struct lpfc_iocbq *iocb; |
1047 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 1048 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 1049 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 1050 | int ret = SUCCESS; |
fa61a54e | 1051 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 1052 | |
a90f5684 | 1053 | lpfc_block_error_handler(cmnd); |
0bd4ca25 JSEC |
1054 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
1055 | BUG_ON(!lpfc_cmd); | |
dea3101e | 1056 | |
0bd4ca25 JSEC |
1057 | /* |
1058 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
1059 | * points to a different SCSI command, then the driver has | |
1060 | * already completed this command, but the midlayer did not | |
1061 | * see the completion before the eh fired. Just return | |
1062 | * SUCCESS. | |
1063 | */ | |
1064 | iocb = &lpfc_cmd->cur_iocbq; | |
1065 | if (lpfc_cmd->pCmd != cmnd) | |
1066 | goto out; | |
dea3101e | 1067 | |
0bd4ca25 | 1068 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 1069 | |
0bd4ca25 JSEC |
1070 | abtsiocb = lpfc_sli_get_iocbq(phba); |
1071 | if (abtsiocb == NULL) { | |
1072 | ret = FAILED; | |
dea3101e JB |
1073 | goto out; |
1074 | } | |
1075 | ||
dea3101e | 1076 | /* |
0bd4ca25 JSEC |
1077 | * The scsi command can not be in txq and it is in flight because the |
1078 | * pCmd is still pointig at the SCSI command we have to abort. There | |
1079 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 1080 | */ |
dea3101e | 1081 | |
0bd4ca25 JSEC |
1082 | cmd = &iocb->iocb; |
1083 | icmd = &abtsiocb->iocb; | |
1084 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
1085 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
1086 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 1087 | |
0bd4ca25 JSEC |
1088 | icmd->ulpLe = 1; |
1089 | icmd->ulpClass = cmd->ulpClass; | |
2e0fef85 | 1090 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
1091 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
1092 | else | |
1093 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 1094 | |
0bd4ca25 | 1095 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 1096 | abtsiocb->vport = vport; |
0bd4ca25 JSEC |
1097 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
1098 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
1099 | ret = FAILED; | |
1100 | goto out; | |
1101 | } | |
dea3101e | 1102 | |
875fbdfe JSEC |
1103 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1104 | lpfc_sli_poll_fcp_ring (phba); | |
1105 | ||
fa61a54e | 1106 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 1107 | /* Wait for abort to complete */ |
fa61a54e JS |
1108 | wait_event_timeout(waitq, |
1109 | (lpfc_cmd->pCmd != cmnd), | |
1110 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 1111 | |
fa61a54e JS |
1112 | spin_lock_irq(shost->host_lock); |
1113 | lpfc_cmd->waitq = NULL; | |
1114 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 1115 | |
0bd4ca25 JSEC |
1116 | if (lpfc_cmd->pCmd == cmnd) { |
1117 | ret = FAILED; | |
e8b62011 JS |
1118 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1119 | "0748 abort handler timed out waiting " | |
1120 | "for abort to complete: ret %#x, ID %d, " | |
1121 | "LUN %d, snum %#lx\n", | |
1122 | ret, cmnd->device->id, cmnd->device->lun, | |
1123 | cmnd->serial_number); | |
dea3101e JB |
1124 | } |
1125 | ||
1126 | out: | |
e8b62011 JS |
1127 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1128 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
1129 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
1130 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 1131 | return ret; |
8fa728a2 JG |
1132 | } |
1133 | ||
dea3101e | 1134 | static int |
7054a606 | 1135 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1136 | { |
2e0fef85 JS |
1137 | struct Scsi_Host *shost = cmnd->device->host; |
1138 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1139 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
1140 | struct lpfc_scsi_buf *lpfc_cmd; |
1141 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e JB |
1142 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1143 | struct lpfc_nodelist *pnode = rdata->pnode; | |
915caaaf JS |
1144 | unsigned long later; |
1145 | int ret = SUCCESS; | |
1146 | int status; | |
1147 | int cnt; | |
dea3101e | 1148 | |
a90f5684 | 1149 | lpfc_block_error_handler(cmnd); |
dea3101e JB |
1150 | /* |
1151 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 1152 | * target is rediscovered or devloss timeout expires. |
dea3101e | 1153 | */ |
915caaaf JS |
1154 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
1155 | while (time_after(later, jiffies)) { | |
58da1ffb | 1156 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 1157 | return FAILED; |
f5603511 | 1158 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e | 1159 | break; |
915caaaf JS |
1160 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
1161 | rdata = cmnd->device->hostdata; | |
1162 | if (!rdata) | |
1163 | break; | |
1164 | pnode = rdata->pnode; | |
1165 | } | |
1166 | if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
1167 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
1168 | "0721 LUN Reset rport " | |
1169 | "failure: msec x%x rdata x%p\n", | |
1170 | jiffies_to_msecs(jiffies - later), rdata); | |
1171 | return FAILED; | |
dea3101e | 1172 | } |
2e0fef85 | 1173 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1174 | if (lpfc_cmd == NULL) |
915caaaf | 1175 | return FAILED; |
dea3101e | 1176 | lpfc_cmd->timeout = 60; |
0b18ac42 | 1177 | lpfc_cmd->rdata = rdata; |
dea3101e | 1178 | |
915caaaf JS |
1179 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, |
1180 | cmnd->device->lun, | |
1181 | FCP_TARGET_RESET); | |
1182 | if (!status) { | |
1183 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1184 | return FAILED; | |
1185 | } | |
dea3101e JB |
1186 | iocbq = &lpfc_cmd->cur_iocbq; |
1187 | ||
1188 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 1189 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
1190 | if (iocbqrsp == NULL) { |
1191 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1192 | return FAILED; | |
1193 | } | |
e8b62011 JS |
1194 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1195 | "0703 Issue target reset to TGT %d LUN %d " | |
1196 | "rpi x%x nlp_flag x%x\n", cmnd->device->id, | |
1197 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); | |
915caaaf JS |
1198 | status = lpfc_sli_issue_iocb_wait(phba, |
1199 | &phba->sli.ring[phba->sli.fcp_ring], | |
1200 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
1201 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 1202 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
1203 | ret = TIMEOUT_ERROR; |
1204 | } else { | |
1205 | if (status != IOCB_SUCCESS) | |
1206 | ret = FAILED; | |
1207 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1208 | } | |
1209 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
1210 | "0713 SCSI layer issued device reset (%d, %d) " | |
1211 | "return x%x status x%x result x%x\n", | |
1212 | cmnd->device->id, cmnd->device->lun, ret, | |
1213 | iocbqrsp->iocb.ulpStatus, | |
1214 | iocbqrsp->iocb.un.ulpWord[4]); | |
6175c02a | 1215 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
51ef4c26 | 1216 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun, |
915caaaf | 1217 | LPFC_CTX_TGT); |
6175c02a | 1218 | if (cnt) |
51ef4c26 | 1219 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
6175c02a | 1220 | cmnd->device->id, cmnd->device->lun, |
915caaaf JS |
1221 | LPFC_CTX_TGT); |
1222 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
1223 | while (time_after(later, jiffies) && cnt) { | |
1224 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 1225 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, |
915caaaf | 1226 | cmnd->device->lun, LPFC_CTX_TGT); |
dea3101e | 1227 | } |
dea3101e | 1228 | if (cnt) { |
e8b62011 JS |
1229 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1230 | "0719 device reset I/O flush failure: " | |
1231 | "cnt x%x\n", cnt); | |
0bd4ca25 | 1232 | ret = FAILED; |
dea3101e | 1233 | } |
dea3101e JB |
1234 | return ret; |
1235 | } | |
1236 | ||
94d0e7b8 | 1237 | static int |
7054a606 | 1238 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1239 | { |
2e0fef85 JS |
1240 | struct Scsi_Host *shost = cmnd->device->host; |
1241 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1242 | struct lpfc_hba *phba = vport->phba; | |
dea3101e JB |
1243 | struct lpfc_nodelist *ndlp = NULL; |
1244 | int match; | |
915caaaf JS |
1245 | int ret = SUCCESS, status, i; |
1246 | int cnt; | |
0bd4ca25 | 1247 | struct lpfc_scsi_buf * lpfc_cmd; |
915caaaf | 1248 | unsigned long later; |
dea3101e | 1249 | |
a90f5684 | 1250 | lpfc_block_error_handler(cmnd); |
dea3101e JB |
1251 | /* |
1252 | * Since the driver manages a single bus device, reset all | |
1253 | * targets known to the driver. Should any target reset | |
1254 | * fail, this routine returns failure to the midlayer. | |
1255 | */ | |
e17da18e | 1256 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 1257 | /* Search for mapped node by target ID */ |
dea3101e | 1258 | match = 0; |
2e0fef85 JS |
1259 | spin_lock_irq(shost->host_lock); |
1260 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
1261 | if (!NLP_CHK_NODE_ACT(ndlp)) |
1262 | continue; | |
685f0bf7 | 1263 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 1264 | ndlp->nlp_sid == i && |
685f0bf7 | 1265 | ndlp->rport) { |
dea3101e JB |
1266 | match = 1; |
1267 | break; | |
1268 | } | |
1269 | } | |
2e0fef85 | 1270 | spin_unlock_irq(shost->host_lock); |
dea3101e JB |
1271 | if (!match) |
1272 | continue; | |
915caaaf JS |
1273 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
1274 | if (lpfc_cmd) { | |
1275 | lpfc_cmd->timeout = 60; | |
1276 | status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, | |
1277 | cmnd->device->lun, | |
1278 | ndlp->rport->dd_data); | |
1279 | if (status != TIMEOUT_ERROR) | |
1280 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1281 | } | |
1282 | if (!lpfc_cmd || status != SUCCESS) { | |
e8b62011 JS |
1283 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1284 | "0700 Bus Reset on target %d failed\n", | |
1285 | i); | |
915caaaf | 1286 | ret = FAILED; |
dea3101e JB |
1287 | } |
1288 | } | |
6175c02a JSEC |
1289 | /* |
1290 | * All outstanding txcmplq I/Os should have been aborted by | |
1291 | * the targets. Unfortunately, some targets do not abide by | |
1292 | * this forcing the driver to double check. | |
1293 | */ | |
51ef4c26 | 1294 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
6175c02a | 1295 | if (cnt) |
51ef4c26 JS |
1296 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
1297 | 0, 0, LPFC_CTX_HOST); | |
915caaaf JS |
1298 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
1299 | while (time_after(later, jiffies) && cnt) { | |
1300 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 1301 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
dea3101e | 1302 | } |
dea3101e | 1303 | if (cnt) { |
e8b62011 JS |
1304 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1305 | "0715 Bus Reset I/O flush failure: " | |
1306 | "cnt x%x left x%x\n", cnt, i); | |
0bd4ca25 | 1307 | ret = FAILED; |
6175c02a | 1308 | } |
e8b62011 JS |
1309 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1310 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e JB |
1311 | return ret; |
1312 | } | |
1313 | ||
1314 | static int | |
1315 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1316 | { | |
2e0fef85 JS |
1317 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1318 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1319 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1320 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e JB |
1321 | uint32_t total = 0, i; |
1322 | uint32_t num_to_alloc = 0; | |
1323 | unsigned long flags; | |
dea3101e | 1324 | |
19a7b4ae | 1325 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e JB |
1326 | return -ENXIO; |
1327 | ||
19a7b4ae | 1328 | sdev->hostdata = rport->dd_data; |
dea3101e JB |
1329 | |
1330 | /* | |
1331 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1332 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1333 | * HBA limit conveyed to the midlayer via the host structure. The |
1334 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1335 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e JB |
1336 | */ |
1337 | total = phba->total_scsi_bufs; | |
3de2a653 | 1338 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
1339 | |
1340 | /* Allow some exchanges to be available always to complete discovery */ | |
1341 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
1342 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1343 | "0704 At limitation of %d preallocated " | |
1344 | "command buffers\n", total); | |
dea3101e | 1345 | return 0; |
92d7f7b0 JS |
1346 | /* Allow some exchanges to be available always to complete discovery */ |
1347 | } else if (total + num_to_alloc > | |
1348 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
1349 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1350 | "0705 Allocation request of %d " | |
1351 | "command buffers will exceed max of %d. " | |
1352 | "Reducing allocation request to %d.\n", | |
1353 | num_to_alloc, phba->cfg_hba_queue_depth, | |
1354 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e JB |
1355 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
1356 | } | |
1357 | ||
1358 | for (i = 0; i < num_to_alloc; i++) { | |
2e0fef85 | 1359 | scsi_buf = lpfc_new_scsi_buf(vport); |
dea3101e | 1360 | if (!scsi_buf) { |
e8b62011 JS |
1361 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1362 | "0706 Failed to allocate " | |
1363 | "command buffer\n"); | |
dea3101e JB |
1364 | break; |
1365 | } | |
1366 | ||
875fbdfe | 1367 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e JB |
1368 | phba->total_scsi_bufs++; |
1369 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 1370 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e JB |
1371 | } |
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | static int | |
1376 | lpfc_slave_configure(struct scsi_device *sdev) | |
1377 | { | |
2e0fef85 JS |
1378 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1379 | struct lpfc_hba *phba = vport->phba; | |
1380 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e JB |
1381 | |
1382 | if (sdev->tagged_supported) | |
3de2a653 | 1383 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 1384 | else |
3de2a653 | 1385 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e JB |
1386 | |
1387 | /* | |
1388 | * Initialize the fc transport attributes for the target | |
1389 | * containing this scsi device. Also note that the driver's | |
1390 | * target pointer is stored in the starget_data for the | |
1391 | * driver's sysfs entry point functions. | |
1392 | */ | |
3de2a653 | 1393 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 1394 | |
875fbdfe JSEC |
1395 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
1396 | lpfc_sli_poll_fcp_ring(phba); | |
1397 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1398 | lpfc_poll_rearm_timer(phba); | |
1399 | } | |
1400 | ||
dea3101e JB |
1401 | return 0; |
1402 | } | |
1403 | ||
1404 | static void | |
1405 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1406 | { | |
1407 | sdev->hostdata = NULL; | |
1408 | return; | |
1409 | } | |
1410 | ||
92d7f7b0 | 1411 | |
dea3101e JB |
1412 | struct scsi_host_template lpfc_template = { |
1413 | .module = THIS_MODULE, | |
1414 | .name = LPFC_DRIVER_NAME, | |
1415 | .info = lpfc_info, | |
1416 | .queuecommand = lpfc_queuecommand, | |
1417 | .eh_abort_handler = lpfc_abort_handler, | |
7054a606 JS |
1418 | .eh_device_reset_handler= lpfc_device_reset_handler, |
1419 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
dea3101e JB |
1420 | .slave_alloc = lpfc_slave_alloc, |
1421 | .slave_configure = lpfc_slave_configure, | |
1422 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 1423 | .scan_finished = lpfc_scan_finished, |
dea3101e | 1424 | .this_id = -1, |
83108bd3 | 1425 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e JB |
1426 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
1427 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 1428 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 1429 | .max_sectors = 0xFFFF, |
dea3101e | 1430 | }; |
3de2a653 JS |
1431 | |
1432 | struct scsi_host_template lpfc_vport_template = { | |
1433 | .module = THIS_MODULE, | |
1434 | .name = LPFC_DRIVER_NAME, | |
1435 | .info = lpfc_info, | |
1436 | .queuecommand = lpfc_queuecommand, | |
1437 | .eh_abort_handler = lpfc_abort_handler, | |
1438 | .eh_device_reset_handler= lpfc_device_reset_handler, | |
1439 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
1440 | .slave_alloc = lpfc_slave_alloc, | |
1441 | .slave_configure = lpfc_slave_configure, | |
1442 | .slave_destroy = lpfc_slave_destroy, | |
1443 | .scan_finished = lpfc_scan_finished, | |
1444 | .this_id = -1, | |
83108bd3 | 1445 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
1446 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
1447 | .use_clustering = ENABLE_CLUSTERING, | |
1448 | .shost_attrs = lpfc_vport_attrs, | |
1449 | .max_sectors = 0xFFFF, | |
1450 | }; |