Commit | Line | Data |
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dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
0c6ac8ef | 4 | * Copyright (C) 2004-2006 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e | 8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
21 | ||
dea3101e | 22 | #include <linux/pci.h> |
23 | #include <linux/interrupt.h> | |
a90f5684 | 24 | #include <linux/delay.h> |
dea3101e | 25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
28 | #include <scsi/scsi_host.h> | |
29 | #include <scsi/scsi_tcq.h> | |
30 | #include <scsi/scsi_transport_fc.h> | |
31 | ||
32 | #include "lpfc_version.h" | |
33 | #include "lpfc_hw.h" | |
34 | #include "lpfc_sli.h" | |
35 | #include "lpfc_disc.h" | |
36 | #include "lpfc_scsi.h" | |
37 | #include "lpfc.h" | |
38 | #include "lpfc_logmsg.h" | |
39 | #include "lpfc_crtn.h" | |
40 | ||
41 | #define LPFC_RESET_WAIT 2 | |
42 | #define LPFC_ABORT_WAIT 2 | |
43 | ||
dea3101e | 44 | |
45 | /* | |
46 | * This routine allocates a scsi buffer, which contains all the necessary | |
47 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
48 | * contains information to build the IOCB. The DMAable region contains | |
49 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
50 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
51 | * and the BPL BDE is setup in the IOCB. | |
52 | */ | |
53 | static struct lpfc_scsi_buf * | |
0bd4ca25 | 54 | lpfc_new_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 55 | { |
56 | struct lpfc_scsi_buf *psb; | |
57 | struct ulp_bde64 *bpl; | |
58 | IOCB_t *iocb; | |
59 | dma_addr_t pdma_phys; | |
604a3e30 | 60 | uint16_t iotag; |
dea3101e | 61 | |
62 | psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
63 | if (!psb) | |
64 | return NULL; | |
65 | memset(psb, 0, sizeof (struct lpfc_scsi_buf)); | |
66 | psb->scsi_hba = phba; | |
67 | ||
68 | /* | |
69 | * Get memory from the pci pool to map the virt space to pci bus space | |
70 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
71 | * struct fcp_rsp and the number of bde's necessary to support the | |
72 | * sg_tablesize. | |
73 | */ | |
74 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
75 | &psb->dma_handle); | |
76 | if (!psb->data) { | |
77 | kfree(psb); | |
78 | return NULL; | |
79 | } | |
80 | ||
81 | /* Initialize virtual ptrs to dma_buf region. */ | |
82 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
83 | ||
604a3e30 JB |
84 | /* Allocate iotag for psb->cur_iocbq. */ |
85 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
86 | if (iotag == 0) { | |
87 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
88 | psb->data, psb->dma_handle); | |
89 | kfree (psb); | |
90 | return NULL; | |
91 | } | |
0bd4ca25 | 92 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 93 | |
dea3101e | 94 | psb->fcp_cmnd = psb->data; |
95 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
96 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
97 | sizeof(struct fcp_rsp); | |
98 | ||
99 | /* Initialize local short-hand pointers. */ | |
100 | bpl = psb->fcp_bpl; | |
101 | pdma_phys = psb->dma_handle; | |
102 | ||
103 | /* | |
104 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
105 | * list bdes. Initialize the first two and leave the rest for | |
106 | * queuecommand. | |
107 | */ | |
108 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
109 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
110 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); | |
111 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; | |
112 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
113 | bpl++; | |
114 | ||
115 | /* Setup the physical region for the FCP RSP */ | |
116 | pdma_phys += sizeof (struct fcp_cmnd); | |
117 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
118 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
119 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); | |
120 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); | |
121 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
122 | ||
123 | /* | |
124 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
125 | * initialize it with all known data now. | |
126 | */ | |
127 | pdma_phys += (sizeof (struct fcp_rsp)); | |
128 | iocb = &psb->cur_iocbq.iocb; | |
129 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
130 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); | |
131 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); | |
132 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); | |
133 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; | |
134 | iocb->ulpBdeCount = 1; | |
135 | iocb->ulpClass = CLASS3; | |
136 | ||
137 | return psb; | |
138 | } | |
139 | ||
455c53ec | 140 | static struct lpfc_scsi_buf* |
875fbdfe | 141 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 142 | { |
0bd4ca25 JSEC |
143 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
144 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 145 | unsigned long iflag = 0; |
0bd4ca25 | 146 | |
875fbdfe | 147 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 148 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
149 | if (lpfc_cmd) { |
150 | lpfc_cmd->seg_cnt = 0; | |
151 | lpfc_cmd->nonsg_phys = 0; | |
152 | } | |
875fbdfe | 153 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
154 | return lpfc_cmd; |
155 | } | |
dea3101e | 156 | |
0bd4ca25 JSEC |
157 | static void |
158 | lpfc_release_scsi_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
159 | { | |
875fbdfe | 160 | unsigned long iflag = 0; |
dea3101e | 161 | |
875fbdfe | 162 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 163 | psb->pCmd = NULL; |
dea3101e | 164 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 165 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e | 166 | } |
167 | ||
168 | static int | |
169 | lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd) | |
170 | { | |
171 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
172 | struct scatterlist *sgel = NULL; | |
173 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
174 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
175 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
176 | dma_addr_t physaddr; | |
177 | uint32_t i, num_bde = 0; | |
178 | int datadir = scsi_cmnd->sc_data_direction; | |
179 | int dma_error; | |
180 | ||
181 | /* | |
182 | * There are three possibilities here - use scatter-gather segment, use | |
183 | * the single mapping, or neither. Start the lpfc command prep by | |
184 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
185 | * data bde entry. | |
186 | */ | |
187 | bpl += 2; | |
188 | if (scsi_cmnd->use_sg) { | |
189 | /* | |
190 | * The driver stores the segment count returned from pci_map_sg | |
191 | * because this a count of dma-mappings used to map the use_sg | |
192 | * pages. They are not guaranteed to be the same for those | |
193 | * architectures that implement an IOMMU. | |
194 | */ | |
195 | sgel = (struct scatterlist *)scsi_cmnd->request_buffer; | |
196 | lpfc_cmd->seg_cnt = dma_map_sg(&phba->pcidev->dev, sgel, | |
197 | scsi_cmnd->use_sg, datadir); | |
198 | if (lpfc_cmd->seg_cnt == 0) | |
199 | return 1; | |
200 | ||
201 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
202 | printk(KERN_ERR "%s: Too many sg segments from " | |
203 | "dma_map_sg. Config %d, seg_cnt %d", | |
204 | __FUNCTION__, phba->cfg_sg_seg_cnt, | |
205 | lpfc_cmd->seg_cnt); | |
206 | dma_unmap_sg(&phba->pcidev->dev, sgel, | |
207 | lpfc_cmd->seg_cnt, datadir); | |
208 | return 1; | |
209 | } | |
210 | ||
211 | /* | |
212 | * The driver established a maximum scatter-gather segment count | |
213 | * during probe that limits the number of sg elements in any | |
214 | * single scsi command. Just run through the seg_cnt and format | |
215 | * the bde's. | |
216 | */ | |
217 | for (i = 0; i < lpfc_cmd->seg_cnt; i++) { | |
218 | physaddr = sg_dma_address(sgel); | |
219 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
220 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
221 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
222 | if (datadir == DMA_TO_DEVICE) | |
223 | bpl->tus.f.bdeFlags = 0; | |
224 | else | |
225 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
226 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
227 | bpl++; | |
228 | sgel++; | |
229 | num_bde++; | |
230 | } | |
231 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { | |
232 | physaddr = dma_map_single(&phba->pcidev->dev, | |
233 | scsi_cmnd->request_buffer, | |
234 | scsi_cmnd->request_bufflen, | |
235 | datadir); | |
236 | dma_error = dma_mapping_error(physaddr); | |
237 | if (dma_error) { | |
238 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
239 | "%d:0718 Unable to dma_map_single " | |
240 | "request_buffer: x%x\n", | |
241 | phba->brd_no, dma_error); | |
242 | return 1; | |
243 | } | |
244 | ||
245 | lpfc_cmd->nonsg_phys = physaddr; | |
246 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
247 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
248 | bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen; | |
249 | if (datadir == DMA_TO_DEVICE) | |
250 | bpl->tus.f.bdeFlags = 0; | |
483f05f0 JSEC |
251 | else |
252 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
dea3101e | 253 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
254 | num_bde = 1; | |
255 | bpl++; | |
256 | } | |
257 | ||
258 | /* | |
259 | * Finish initializing those IOCB fields that are dependent on the | |
483f05f0 JSEC |
260 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly |
261 | * reinitialized since all iocb memory resources are used many times | |
262 | * for transmit, receive, and continuation bpl's. | |
dea3101e | 263 | */ |
483f05f0 | 264 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
dea3101e | 265 | iocb_cmd->un.fcpi64.bdl.bdeSize += |
266 | (num_bde * sizeof (struct ulp_bde64)); | |
267 | iocb_cmd->ulpBdeCount = 1; | |
268 | iocb_cmd->ulpLe = 1; | |
269 | fcp_cmnd->fcpDl = be32_to_cpu(scsi_cmnd->request_bufflen); | |
270 | return 0; | |
271 | } | |
272 | ||
bcf4dbfa JS |
273 | static void |
274 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
275 | { | |
276 | /* | |
277 | * There are only two special cases to consider. (1) the scsi command | |
278 | * requested scatter-gather usage or (2) the scsi command allocated | |
279 | * a request buffer, but did not request use_sg. There is a third | |
280 | * case, but it does not require resource deallocation. | |
281 | */ | |
282 | if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) { | |
283 | dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer, | |
284 | psb->seg_cnt, psb->pCmd->sc_data_direction); | |
285 | } else { | |
286 | if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) { | |
287 | dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys, | |
288 | psb->pCmd->request_bufflen, | |
289 | psb->pCmd->sc_data_direction); | |
290 | } | |
291 | } | |
292 | } | |
293 | ||
dea3101e | 294 | static void |
295 | lpfc_handle_fcp_err(struct lpfc_scsi_buf *lpfc_cmd) | |
296 | { | |
297 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
298 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
299 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
300 | struct lpfc_hba *phba = lpfc_cmd->scsi_hba; | |
301 | uint32_t fcpi_parm = lpfc_cmd->cur_iocbq.iocb.un.fcpi.fcpi_parm; | |
302 | uint32_t resp_info = fcprsp->rspStatus2; | |
303 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 304 | uint32_t *lp; |
dea3101e | 305 | uint32_t host_status = DID_OK; |
306 | uint32_t rsplen = 0; | |
c7743956 | 307 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 308 | |
309 | /* | |
310 | * If this is a task management command, there is no | |
311 | * scsi packet associated with this lpfc_cmd. The driver | |
312 | * consumes it. | |
313 | */ | |
314 | if (fcpcmd->fcpCntl2) { | |
315 | scsi_status = 0; | |
316 | goto out; | |
317 | } | |
318 | ||
c7743956 JS |
319 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
320 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
321 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
322 | snslen = SCSI_SENSE_BUFFERSIZE; | |
323 | ||
324 | if (resp_info & RSP_LEN_VALID) | |
325 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
326 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
327 | } | |
328 | lp = (uint32_t *)cmnd->sense_buffer; | |
329 | ||
330 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
331 | logit = LOG_FCP; | |
332 | ||
333 | lpfc_printf_log(phba, KERN_WARNING, logit, | |
334 | "%d:0730 FCP command x%x failed: x%x SNS x%x x%x " | |
335 | "Data: x%x x%x x%x x%x x%x\n", | |
336 | phba->brd_no, cmnd->cmnd[0], scsi_status, | |
337 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
dea3101e | 338 | be32_to_cpu(fcprsp->rspResId), |
339 | be32_to_cpu(fcprsp->rspSnsLen), | |
340 | be32_to_cpu(fcprsp->rspRspLen), | |
341 | fcprsp->rspInfo3); | |
342 | ||
343 | if (resp_info & RSP_LEN_VALID) { | |
344 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
345 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
346 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
347 | host_status = DID_ERROR; | |
348 | goto out; | |
349 | } | |
350 | } | |
351 | ||
dea3101e | 352 | cmnd->resid = 0; |
353 | if (resp_info & RESID_UNDER) { | |
354 | cmnd->resid = be32_to_cpu(fcprsp->rspResId); | |
355 | ||
356 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
357 | "%d:0716 FCP Read Underrun, expected %d, " | |
358 | "residual %d Data: x%x x%x x%x\n", phba->brd_no, | |
359 | be32_to_cpu(fcpcmd->fcpDl), cmnd->resid, | |
360 | fcpi_parm, cmnd->cmnd[0], cmnd->underflow); | |
361 | ||
362 | /* | |
363 | * The cmnd->underflow is the minimum number of bytes that must | |
364 | * be transfered for this command. Provided a sense condition | |
365 | * is not present, make sure the actual amount transferred is at | |
366 | * least the underflow value or fail. | |
367 | */ | |
368 | if (!(resp_info & SNS_LEN_VALID) && | |
369 | (scsi_status == SAM_STAT_GOOD) && | |
370 | (cmnd->request_bufflen - cmnd->resid) < cmnd->underflow) { | |
371 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
372 | "%d:0717 FCP command x%x residual " | |
373 | "underrun converted to error " | |
374 | "Data: x%x x%x x%x\n", phba->brd_no, | |
375 | cmnd->cmnd[0], cmnd->request_bufflen, | |
376 | cmnd->resid, cmnd->underflow); | |
377 | ||
378 | host_status = DID_ERROR; | |
379 | } | |
380 | } else if (resp_info & RESID_OVER) { | |
381 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
382 | "%d:0720 FCP command x%x residual " | |
383 | "overrun error. Data: x%x x%x \n", | |
384 | phba->brd_no, cmnd->cmnd[0], | |
385 | cmnd->request_bufflen, cmnd->resid); | |
386 | host_status = DID_ERROR; | |
387 | ||
388 | /* | |
389 | * Check SLI validation that all the transfer was actually done | |
390 | * (fcpi_parm should be zero). Apply check only to reads. | |
391 | */ | |
392 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
393 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
c7743956 | 394 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
dea3101e | 395 | "%d:0734 FCP Read Check Error Data: " |
396 | "x%x x%x x%x x%x\n", phba->brd_no, | |
397 | be32_to_cpu(fcpcmd->fcpDl), | |
398 | be32_to_cpu(fcprsp->rspResId), | |
399 | fcpi_parm, cmnd->cmnd[0]); | |
400 | host_status = DID_ERROR; | |
401 | cmnd->resid = cmnd->request_bufflen; | |
402 | } | |
403 | ||
404 | out: | |
405 | cmnd->result = ScsiResult(host_status, scsi_status); | |
406 | } | |
407 | ||
408 | static void | |
409 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
410 | struct lpfc_iocbq *pIocbOut) | |
411 | { | |
412 | struct lpfc_scsi_buf *lpfc_cmd = | |
413 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
414 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
415 | struct lpfc_nodelist *pnode = rdata->pnode; | |
416 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 JSEC |
417 | int result; |
418 | struct scsi_device *sdev, *tmp_sdev; | |
419 | int depth = 0; | |
dea3101e | 420 | |
421 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
422 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
423 | ||
424 | if (lpfc_cmd->status) { | |
425 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
426 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
427 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
428 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
429 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
430 | ||
431 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
432 | "%d:0729 FCP cmd x%x failed <%d/%d> status: " | |
433 | "x%x result: x%x Data: x%x x%x\n", | |
434 | phba->brd_no, cmd->cmnd[0], cmd->device->id, | |
435 | cmd->device->lun, lpfc_cmd->status, | |
436 | lpfc_cmd->result, pIocbOut->iocb.ulpContext, | |
437 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
438 | ||
439 | switch (lpfc_cmd->status) { | |
440 | case IOSTAT_FCP_RSP_ERROR: | |
441 | /* Call FCP RSP handler to determine result */ | |
442 | lpfc_handle_fcp_err(lpfc_cmd); | |
443 | break; | |
444 | case IOSTAT_NPORT_BSY: | |
445 | case IOSTAT_FABRIC_BSY: | |
446 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); | |
447 | break; | |
448 | default: | |
449 | cmd->result = ScsiResult(DID_ERROR, 0); | |
450 | break; | |
451 | } | |
452 | ||
19a7b4ae JSEC |
453 | if ((pnode == NULL ) |
454 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
455 | cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY); | |
dea3101e | 456 | } else { |
457 | cmd->result = ScsiResult(DID_OK, 0); | |
458 | } | |
459 | ||
460 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
461 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
462 | ||
463 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
464 | "%d:0710 Iodone <%d/%d> cmd %p, error x%x " | |
465 | "SNS x%x x%x Data: x%x x%x\n", | |
466 | phba->brd_no, cmd->device->id, | |
467 | cmd->device->lun, cmd, cmd->result, | |
468 | *lp, *(lp + 3), cmd->retries, cmd->resid); | |
469 | } | |
470 | ||
445cf4f4 JSEC |
471 | result = cmd->result; |
472 | sdev = cmd->device; | |
1dcb58e5 | 473 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
474 | cmd->scsi_done(cmd); |
475 | ||
b808608b JW |
476 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
477 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
478 | return; | |
479 | } | |
480 | ||
0c6ac8ef | 481 | if (!result && pnode != NULL && |
445cf4f4 JSEC |
482 | ((jiffies - pnode->last_ramp_up_time) > |
483 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
484 | ((jiffies - pnode->last_q_full_time) > | |
485 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
486 | (phba->cfg_lun_queue_depth > sdev->queue_depth)) { | |
487 | shost_for_each_device(tmp_sdev, sdev->host) { | |
488 | if (phba->cfg_lun_queue_depth > tmp_sdev->queue_depth) { | |
489 | if (tmp_sdev->id != sdev->id) | |
490 | continue; | |
491 | if (tmp_sdev->ordered_tags) | |
492 | scsi_adjust_queue_depth(tmp_sdev, | |
493 | MSG_ORDERED_TAG, | |
494 | tmp_sdev->queue_depth+1); | |
495 | else | |
496 | scsi_adjust_queue_depth(tmp_sdev, | |
497 | MSG_SIMPLE_TAG, | |
498 | tmp_sdev->queue_depth+1); | |
499 | ||
500 | pnode->last_ramp_up_time = jiffies; | |
501 | } | |
502 | } | |
503 | } | |
504 | ||
505 | /* | |
506 | * Check for queue full. If the lun is reporting queue full, then | |
507 | * back off the lun queue depth to prevent target overloads. | |
508 | */ | |
0c6ac8ef | 509 | if (result == SAM_STAT_TASK_SET_FULL && pnode != NULL) { |
445cf4f4 JSEC |
510 | pnode->last_q_full_time = jiffies; |
511 | ||
512 | shost_for_each_device(tmp_sdev, sdev->host) { | |
513 | if (tmp_sdev->id != sdev->id) | |
514 | continue; | |
515 | depth = scsi_track_queue_full(tmp_sdev, | |
516 | tmp_sdev->queue_depth - 1); | |
517 | } | |
518 | /* | |
519 | * The queue depth cannot be lowered any more. | |
520 | * Modify the returned error code to store | |
521 | * the final depth value set by | |
522 | * scsi_track_queue_full. | |
523 | */ | |
524 | if (depth == -1) | |
525 | depth = sdev->host->cmd_per_lun; | |
526 | ||
527 | if (depth) { | |
528 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
529 | "%d:0711 detected queue full - lun queue depth " | |
530 | " adjusted to %d.\n", phba->brd_no, depth); | |
531 | } | |
532 | } | |
533 | ||
0bd4ca25 | 534 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 535 | } |
536 | ||
537 | static void | |
538 | lpfc_scsi_prep_cmnd(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd, | |
539 | struct lpfc_nodelist *pnode) | |
540 | { | |
541 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
542 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
543 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
544 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
545 | int datadir = scsi_cmnd->sc_data_direction; | |
546 | ||
547 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; | |
69859dc4 JSEC |
548 | /* clear task management bits */ |
549 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 550 | |
91886523 JSEC |
551 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
552 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 553 | |
554 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
555 | ||
556 | if (scsi_cmnd->device->tagged_supported) { | |
557 | switch (scsi_cmnd->tag) { | |
558 | case HEAD_OF_QUEUE_TAG: | |
559 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
560 | break; | |
561 | case ORDERED_QUEUE_TAG: | |
562 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
563 | break; | |
564 | default: | |
565 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
566 | break; | |
567 | } | |
568 | } else | |
569 | fcp_cmnd->fcpCntl1 = 0; | |
570 | ||
571 | /* | |
572 | * There are three possibilities here - use scatter-gather segment, use | |
573 | * the single mapping, or neither. Start the lpfc command prep by | |
574 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
575 | * data bde entry. | |
576 | */ | |
577 | if (scsi_cmnd->use_sg) { | |
578 | if (datadir == DMA_TO_DEVICE) { | |
579 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
580 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
581 | iocb_cmd->ulpPU = 0; | |
582 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
583 | phba->fc4OutputRequests++; | |
584 | } else { | |
585 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
586 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
587 | iocb_cmd->un.fcpi.fcpi_parm = | |
588 | scsi_cmnd->request_bufflen; | |
589 | fcp_cmnd->fcpCntl3 = READ_DATA; | |
590 | phba->fc4InputRequests++; | |
591 | } | |
592 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { | |
593 | if (datadir == DMA_TO_DEVICE) { | |
594 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
595 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
596 | iocb_cmd->ulpPU = 0; | |
597 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
598 | phba->fc4OutputRequests++; | |
599 | } else { | |
600 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
601 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
602 | iocb_cmd->un.fcpi.fcpi_parm = | |
603 | scsi_cmnd->request_bufflen; | |
604 | fcp_cmnd->fcpCntl3 = READ_DATA; | |
605 | phba->fc4InputRequests++; | |
606 | } | |
607 | } else { | |
608 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
609 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
610 | iocb_cmd->ulpPU = 0; | |
611 | fcp_cmnd->fcpCntl3 = 0; | |
612 | phba->fc4ControlRequests++; | |
613 | } | |
614 | ||
615 | /* | |
616 | * Finish initializing those IOCB fields that are independent | |
617 | * of the scsi_cmnd request_buffer | |
618 | */ | |
619 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
620 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
621 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
622 | ||
623 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
624 | piocbq->context1 = lpfc_cmd; | |
625 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
626 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
627 | } | |
628 | ||
629 | static int | |
630 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_hba *phba, | |
631 | struct lpfc_scsi_buf *lpfc_cmd, | |
420b630d | 632 | unsigned int lun, |
dea3101e | 633 | uint8_t task_mgmt_cmd) |
634 | { | |
635 | struct lpfc_sli *psli; | |
636 | struct lpfc_iocbq *piocbq; | |
637 | IOCB_t *piocb; | |
638 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 639 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 640 | struct lpfc_nodelist *ndlp = rdata->pnode; |
641 | ||
19a7b4ae | 642 | if ((ndlp == NULL) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { |
dea3101e | 643 | return 0; |
644 | } | |
645 | ||
646 | psli = &phba->sli; | |
647 | piocbq = &(lpfc_cmd->cur_iocbq); | |
648 | piocb = &piocbq->iocb; | |
649 | ||
650 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
420b630d | 651 | int_to_scsilun(lun, &lpfc_cmd->fcp_cmnd->fcp_lun); |
dea3101e | 652 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
653 | ||
654 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; | |
655 | ||
656 | piocb->ulpContext = ndlp->nlp_rpi; | |
657 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
658 | piocb->ulpFCP2Rcvy = 1; | |
659 | } | |
660 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
661 | ||
662 | /* ulpTimeout is only one byte */ | |
663 | if (lpfc_cmd->timeout > 0xff) { | |
664 | /* | |
665 | * Do not timeout the command at the firmware level. | |
666 | * The driver will provide the timeout mechanism. | |
667 | */ | |
668 | piocb->ulpTimeout = 0; | |
669 | } else { | |
670 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
671 | } | |
672 | ||
dea3101e | 673 | return (1); |
674 | } | |
675 | ||
676 | static int | |
0b18ac42 | 677 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba, |
420b630d JS |
678 | unsigned tgt_id, unsigned int lun, |
679 | struct lpfc_rport_data *rdata) | |
dea3101e | 680 | { |
681 | struct lpfc_iocbq *iocbq; | |
0bd4ca25 | 682 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 683 | int ret; |
684 | ||
f5603511 JS |
685 | if (!rdata->pnode) |
686 | return FAILED; | |
687 | ||
0b18ac42 | 688 | lpfc_cmd->rdata = rdata; |
420b630d JS |
689 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, lun, |
690 | FCP_TARGET_RESET); | |
dea3101e | 691 | if (!ret) |
692 | return FAILED; | |
693 | ||
694 | lpfc_cmd->scsi_hba = phba; | |
695 | iocbq = &lpfc_cmd->cur_iocbq; | |
0bd4ca25 JSEC |
696 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
697 | ||
dea3101e | 698 | if (!iocbqrsp) |
699 | return FAILED; | |
dea3101e | 700 | |
0b18ac42 JS |
701 | /* Issue Target Reset to TGT <num> */ |
702 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
703 | "%d:0702 Issue Target Reset to TGT %d " | |
704 | "Data: x%x x%x\n", | |
705 | phba->brd_no, tgt_id, rdata->pnode->nlp_rpi, | |
706 | rdata->pnode->nlp_flag); | |
707 | ||
68876920 JSEC |
708 | ret = lpfc_sli_issue_iocb_wait(phba, |
709 | &phba->sli.ring[phba->sli.fcp_ring], | |
710 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 711 | if (ret != IOCB_SUCCESS) { |
712 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
713 | ret = FAILED; | |
714 | } else { | |
715 | ret = SUCCESS; | |
716 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
717 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
718 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
719 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
720 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
721 | } | |
722 | ||
604a3e30 | 723 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e | 724 | return ret; |
725 | } | |
726 | ||
dea3101e | 727 | const char * |
728 | lpfc_info(struct Scsi_Host *host) | |
729 | { | |
7f0b5b19 | 730 | struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata; |
dea3101e | 731 | int len; |
732 | static char lpfcinfobuf[384]; | |
733 | ||
734 | memset(lpfcinfobuf,0,384); | |
735 | if (phba && phba->pcidev){ | |
736 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
737 | len = strlen(lpfcinfobuf); | |
738 | snprintf(lpfcinfobuf + len, | |
739 | 384-len, | |
740 | " on PCI bus %02x device %02x irq %d", | |
741 | phba->pcidev->bus->number, | |
742 | phba->pcidev->devfn, | |
743 | phba->pcidev->irq); | |
744 | len = strlen(lpfcinfobuf); | |
745 | if (phba->Port[0]) { | |
746 | snprintf(lpfcinfobuf + len, | |
747 | 384-len, | |
748 | " port %s", | |
749 | phba->Port); | |
750 | } | |
751 | } | |
752 | return lpfcinfobuf; | |
753 | } | |
754 | ||
875fbdfe JSEC |
755 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
756 | { | |
757 | unsigned long poll_tmo_expires = | |
758 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
759 | ||
760 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
761 | mod_timer(&phba->fcp_poll_timer, | |
762 | poll_tmo_expires); | |
763 | } | |
764 | ||
765 | void lpfc_poll_start_timer(struct lpfc_hba * phba) | |
766 | { | |
767 | lpfc_poll_rearm_timer(phba); | |
768 | } | |
769 | ||
770 | void lpfc_poll_timeout(unsigned long ptr) | |
771 | { | |
772 | struct lpfc_hba *phba = (struct lpfc_hba *)ptr; | |
773 | unsigned long iflag; | |
774 | ||
775 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
776 | ||
777 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
778 | lpfc_sli_poll_fcp_ring (phba); | |
779 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
780 | lpfc_poll_rearm_timer(phba); | |
781 | } | |
782 | ||
783 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
784 | } | |
785 | ||
dea3101e | 786 | static int |
787 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
788 | { | |
789 | struct lpfc_hba *phba = | |
7f0b5b19 | 790 | (struct lpfc_hba *) cmnd->device->host->hostdata; |
dea3101e | 791 | struct lpfc_sli *psli = &phba->sli; |
792 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
793 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 794 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 795 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 796 | int err; |
dea3101e | 797 | |
19a7b4ae JSEC |
798 | err = fc_remote_port_chkready(rport); |
799 | if (err) { | |
800 | cmnd->result = err; | |
dea3101e | 801 | goto out_fail_command; |
802 | } | |
803 | ||
804 | /* | |
19a7b4ae JSEC |
805 | * Catch race where our node has transitioned, but the |
806 | * transport is still transitioning. | |
dea3101e | 807 | */ |
19a7b4ae JSEC |
808 | if (!ndlp) { |
809 | cmnd->result = ScsiResult(DID_BUS_BUSY, 0); | |
810 | goto out_fail_command; | |
dea3101e | 811 | } |
875fbdfe | 812 | lpfc_cmd = lpfc_get_scsi_buf (phba); |
dea3101e | 813 | if (lpfc_cmd == NULL) { |
1de933f3 JSEC |
814 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
815 | "%d:0707 driver's buffer pool is empty, " | |
816 | "IO busied\n", phba->brd_no); | |
dea3101e | 817 | goto out_host_busy; |
818 | } | |
819 | ||
820 | /* | |
821 | * Store the midlayer's command structure for the completion phase | |
822 | * and complete the command initialization. | |
823 | */ | |
824 | lpfc_cmd->pCmd = cmnd; | |
825 | lpfc_cmd->rdata = rdata; | |
826 | lpfc_cmd->timeout = 0; | |
827 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
828 | cmnd->scsi_done = done; | |
829 | ||
830 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
831 | if (err) | |
832 | goto out_host_busy_free_buf; | |
833 | ||
834 | lpfc_scsi_prep_cmnd(phba, lpfc_cmd, ndlp); | |
835 | ||
836 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
837 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); | |
838 | if (err) | |
839 | goto out_host_busy_free_buf; | |
875fbdfe JSEC |
840 | |
841 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
842 | lpfc_sli_poll_fcp_ring(phba); | |
843 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
844 | lpfc_poll_rearm_timer(phba); | |
845 | } | |
846 | ||
dea3101e | 847 | return 0; |
848 | ||
849 | out_host_busy_free_buf: | |
bcf4dbfa | 850 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 851 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 852 | out_host_busy: |
853 | return SCSI_MLQUEUE_HOST_BUSY; | |
854 | ||
855 | out_fail_command: | |
856 | done(cmnd); | |
857 | return 0; | |
858 | } | |
859 | ||
a90f5684 JS |
860 | static void |
861 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
862 | { | |
863 | struct Scsi_Host *shost = cmnd->device->host; | |
864 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
865 | ||
866 | spin_lock_irq(shost->host_lock); | |
867 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
868 | spin_unlock_irq(shost->host_lock); | |
869 | msleep(1000); | |
870 | spin_lock_irq(shost->host_lock); | |
871 | } | |
872 | spin_unlock_irq(shost->host_lock); | |
873 | return; | |
874 | } | |
63c59c3b | 875 | |
dea3101e | 876 | static int |
63c59c3b | 877 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 878 | { |
63c59c3b | 879 | struct Scsi_Host *shost = cmnd->device->host; |
7f0b5b19 | 880 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata; |
dea3101e | 881 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
882 | struct lpfc_iocbq *iocb; |
883 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 884 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 885 | IOCB_t *cmd, *icmd; |
dea3101e | 886 | unsigned int loop_count = 0; |
0bd4ca25 | 887 | int ret = SUCCESS; |
dea3101e | 888 | |
a90f5684 | 889 | lpfc_block_error_handler(cmnd); |
63c59c3b | 890 | spin_lock_irq(shost->host_lock); |
dea3101e | 891 | |
0bd4ca25 JSEC |
892 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
893 | BUG_ON(!lpfc_cmd); | |
dea3101e | 894 | |
0bd4ca25 JSEC |
895 | /* |
896 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
897 | * points to a different SCSI command, then the driver has | |
898 | * already completed this command, but the midlayer did not | |
899 | * see the completion before the eh fired. Just return | |
900 | * SUCCESS. | |
901 | */ | |
902 | iocb = &lpfc_cmd->cur_iocbq; | |
903 | if (lpfc_cmd->pCmd != cmnd) | |
904 | goto out; | |
dea3101e | 905 | |
0bd4ca25 | 906 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 907 | |
0bd4ca25 JSEC |
908 | abtsiocb = lpfc_sli_get_iocbq(phba); |
909 | if (abtsiocb == NULL) { | |
910 | ret = FAILED; | |
dea3101e | 911 | goto out; |
912 | } | |
913 | ||
dea3101e | 914 | /* |
0bd4ca25 JSEC |
915 | * The scsi command can not be in txq and it is in flight because the |
916 | * pCmd is still pointig at the SCSI command we have to abort. There | |
917 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 918 | */ |
dea3101e | 919 | |
0bd4ca25 JSEC |
920 | cmd = &iocb->iocb; |
921 | icmd = &abtsiocb->iocb; | |
922 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
923 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
924 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 925 | |
0bd4ca25 JSEC |
926 | icmd->ulpLe = 1; |
927 | icmd->ulpClass = cmd->ulpClass; | |
928 | if (phba->hba_state >= LPFC_LINK_UP) | |
929 | icmd->ulpCommand = CMD_ABORT_XRI_CN; | |
930 | else | |
931 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 932 | |
0bd4ca25 JSEC |
933 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
934 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { | |
935 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
936 | ret = FAILED; | |
937 | goto out; | |
938 | } | |
dea3101e | 939 | |
875fbdfe JSEC |
940 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
941 | lpfc_sli_poll_fcp_ring (phba); | |
942 | ||
0bd4ca25 JSEC |
943 | /* Wait for abort to complete */ |
944 | while (lpfc_cmd->pCmd == cmnd) | |
945 | { | |
875fbdfe JSEC |
946 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
947 | lpfc_sli_poll_fcp_ring (phba); | |
948 | ||
0bd4ca25 | 949 | spin_unlock_irq(phba->host->host_lock); |
a9a3047d | 950 | schedule_timeout_uninterruptible(LPFC_ABORT_WAIT*HZ); |
0bd4ca25 JSEC |
951 | spin_lock_irq(phba->host->host_lock); |
952 | if (++loop_count | |
c01f3208 | 953 | > (2 * phba->cfg_devloss_tmo)/LPFC_ABORT_WAIT) |
0bd4ca25 JSEC |
954 | break; |
955 | } | |
dea3101e | 956 | |
0bd4ca25 JSEC |
957 | if (lpfc_cmd->pCmd == cmnd) { |
958 | ret = FAILED; | |
959 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
960 | "%d:0748 abort handler timed out waiting for " | |
961 | "abort to complete: ret %#x, ID %d, LUN %d, " | |
962 | "snum %#lx\n", | |
963 | phba->brd_no, ret, cmnd->device->id, | |
964 | cmnd->device->lun, cmnd->serial_number); | |
dea3101e | 965 | } |
966 | ||
967 | out: | |
968 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
1de933f3 JSEC |
969 | "%d:0749 SCSI Layer I/O Abort Request " |
970 | "Status x%x ID %d LUN %d snum %#lx\n", | |
0bd4ca25 JSEC |
971 | phba->brd_no, ret, cmnd->device->id, |
972 | cmnd->device->lun, cmnd->serial_number); | |
dea3101e | 973 | |
63c59c3b | 974 | spin_unlock_irq(shost->host_lock); |
dea3101e | 975 | |
63c59c3b | 976 | return ret; |
8fa728a2 JG |
977 | } |
978 | ||
dea3101e | 979 | static int |
63c59c3b | 980 | lpfc_reset_lun_handler(struct scsi_cmnd *cmnd) |
dea3101e | 981 | { |
982 | struct Scsi_Host *shost = cmnd->device->host; | |
7f0b5b19 | 983 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata; |
0bd4ca25 JSEC |
984 | struct lpfc_scsi_buf *lpfc_cmd; |
985 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e | 986 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
987 | struct lpfc_nodelist *pnode = rdata->pnode; | |
6175c02a | 988 | uint32_t cmd_result = 0, cmd_status = 0; |
dea3101e | 989 | int ret = FAILED; |
990 | int cnt, loopcnt; | |
991 | ||
a90f5684 | 992 | lpfc_block_error_handler(cmnd); |
63c59c3b | 993 | spin_lock_irq(shost->host_lock); |
f5603511 | 994 | loopcnt = 0; |
dea3101e | 995 | /* |
996 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 997 | * target is rediscovered or devloss timeout expires. |
dea3101e | 998 | */ |
999 | while ( 1 ) { | |
1000 | if (!pnode) | |
f5603511 | 1001 | return FAILED; |
dea3101e | 1002 | |
1003 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
1004 | spin_unlock_irq(phba->host->host_lock); | |
a9a3047d | 1005 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
dea3101e | 1006 | spin_lock_irq(phba->host->host_lock); |
f5603511 JS |
1007 | loopcnt++; |
1008 | rdata = cmnd->device->hostdata; | |
1009 | if (!rdata || | |
1010 | (loopcnt > ((phba->cfg_devloss_tmo * 2) + 1))) { | |
1011 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1012 | "%d:0721 LUN Reset rport failure:" | |
1013 | " cnt x%x rdata x%p\n", | |
1014 | phba->brd_no, loopcnt, rdata); | |
1015 | goto out; | |
1016 | } | |
1017 | pnode = rdata->pnode; | |
1018 | if (!pnode) | |
1019 | return FAILED; | |
dea3101e | 1020 | } |
f5603511 | 1021 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e | 1022 | break; |
1023 | } | |
1024 | ||
875fbdfe | 1025 | lpfc_cmd = lpfc_get_scsi_buf (phba); |
dea3101e | 1026 | if (lpfc_cmd == NULL) |
1027 | goto out; | |
1028 | ||
dea3101e | 1029 | lpfc_cmd->timeout = 60; |
1030 | lpfc_cmd->scsi_hba = phba; | |
0b18ac42 | 1031 | lpfc_cmd->rdata = rdata; |
dea3101e | 1032 | |
420b630d JS |
1033 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, cmnd->device->lun, |
1034 | FCP_LUN_RESET); | |
dea3101e | 1035 | if (!ret) |
1036 | goto out_free_scsi_buf; | |
1037 | ||
1038 | iocbq = &lpfc_cmd->cur_iocbq; | |
1039 | ||
1040 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 1041 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
dea3101e | 1042 | if (iocbqrsp == NULL) |
1043 | goto out_free_scsi_buf; | |
1044 | ||
0b18ac42 JS |
1045 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, |
1046 | "%d:0703 Issue LUN Reset to TGT %d LUN %d " | |
1047 | "Data: x%x x%x\n", phba->brd_no, cmnd->device->id, | |
1048 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); | |
1049 | ||
68876920 JSEC |
1050 | ret = lpfc_sli_issue_iocb_wait(phba, |
1051 | &phba->sli.ring[phba->sli.fcp_ring], | |
1052 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 1053 | if (ret == IOCB_SUCCESS) |
1054 | ret = SUCCESS; | |
1055 | ||
6175c02a JSEC |
1056 | |
1057 | cmd_result = iocbqrsp->iocb.un.ulpWord[4]; | |
1058 | cmd_status = iocbqrsp->iocb.ulpStatus; | |
1059 | ||
1060 | lpfc_sli_release_iocbq(phba, iocbqrsp); | |
dea3101e | 1061 | |
1062 | /* | |
6175c02a | 1063 | * All outstanding txcmplq I/Os should have been aborted by the device. |
dea3101e | 1064 | * Unfortunately, some targets do not abide by this forcing the driver |
1065 | * to double check. | |
1066 | */ | |
6175c02a JSEC |
1067 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
1068 | cmnd->device->id, cmnd->device->lun, | |
1069 | LPFC_CTX_LUN); | |
1070 | if (cnt) | |
1071 | lpfc_sli_abort_iocb(phba, | |
1072 | &phba->sli.ring[phba->sli.fcp_ring], | |
1073 | cmnd->device->id, cmnd->device->lun, | |
1074 | 0, LPFC_CTX_LUN); | |
dea3101e | 1075 | loopcnt = 0; |
6175c02a | 1076 | while(cnt) { |
dea3101e | 1077 | spin_unlock_irq(phba->host->host_lock); |
a9a3047d | 1078 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
dea3101e | 1079 | spin_lock_irq(phba->host->host_lock); |
1080 | ||
1081 | if (++loopcnt | |
c01f3208 | 1082 | > (2 * phba->cfg_devloss_tmo)/LPFC_RESET_WAIT) |
dea3101e | 1083 | break; |
6175c02a JSEC |
1084 | |
1085 | cnt = lpfc_sli_sum_iocb(phba, | |
1086 | &phba->sli.ring[phba->sli.fcp_ring], | |
1087 | cmnd->device->id, cmnd->device->lun, | |
1088 | LPFC_CTX_LUN); | |
dea3101e | 1089 | } |
1090 | ||
1091 | if (cnt) { | |
0bd4ca25 | 1092 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
dea3101e | 1093 | "%d:0719 LUN Reset I/O flush failure: cnt x%x\n", |
1094 | phba->brd_no, cnt); | |
0bd4ca25 | 1095 | ret = FAILED; |
dea3101e | 1096 | } |
1097 | ||
dea3101e | 1098 | out_free_scsi_buf: |
420b630d JS |
1099 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
1100 | ||
dea3101e | 1101 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
1102 | "%d:0713 SCSI layer issued LUN reset (%d, %d) " | |
1103 | "Data: x%x x%x x%x\n", | |
6175c02a JSEC |
1104 | phba->brd_no, cmnd->device->id,cmnd->device->lun, |
1105 | ret, cmd_status, cmd_result); | |
1106 | ||
dea3101e | 1107 | out: |
63c59c3b | 1108 | spin_unlock_irq(shost->host_lock); |
dea3101e | 1109 | return ret; |
1110 | } | |
1111 | ||
94d0e7b8 | 1112 | static int |
63c59c3b | 1113 | lpfc_reset_bus_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1114 | { |
1115 | struct Scsi_Host *shost = cmnd->device->host; | |
7f0b5b19 | 1116 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata; |
dea3101e | 1117 | struct lpfc_nodelist *ndlp = NULL; |
1118 | int match; | |
1119 | int ret = FAILED, i, err_count = 0; | |
1120 | int cnt, loopcnt; | |
0bd4ca25 | 1121 | struct lpfc_scsi_buf * lpfc_cmd; |
dea3101e | 1122 | |
a90f5684 | 1123 | lpfc_block_error_handler(cmnd); |
63c59c3b JSEC |
1124 | spin_lock_irq(shost->host_lock); |
1125 | ||
875fbdfe | 1126 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1127 | if (lpfc_cmd == NULL) |
1128 | goto out; | |
1129 | ||
1130 | /* The lpfc_cmd storage is reused. Set all loop invariants. */ | |
1131 | lpfc_cmd->timeout = 60; | |
dea3101e | 1132 | lpfc_cmd->scsi_hba = phba; |
1133 | ||
1134 | /* | |
1135 | * Since the driver manages a single bus device, reset all | |
1136 | * targets known to the driver. Should any target reset | |
1137 | * fail, this routine returns failure to the midlayer. | |
1138 | */ | |
e17da18e | 1139 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
dea3101e | 1140 | /* Search the mapped list for this target ID */ |
1141 | match = 0; | |
1142 | list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) { | |
1143 | if ((i == ndlp->nlp_sid) && ndlp->rport) { | |
1144 | match = 1; | |
1145 | break; | |
1146 | } | |
1147 | } | |
1148 | if (!match) | |
1149 | continue; | |
1150 | ||
420b630d JS |
1151 | ret = lpfc_scsi_tgt_reset(lpfc_cmd, phba, i, cmnd->device->lun, |
1152 | ndlp->rport->dd_data); | |
dea3101e | 1153 | if (ret != SUCCESS) { |
6175c02a | 1154 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
dca9479b | 1155 | "%d:0700 Bus Reset on target %d failed\n", |
dea3101e | 1156 | phba->brd_no, i); |
1157 | err_count++; | |
1158 | } | |
1159 | } | |
1160 | ||
6175c02a JSEC |
1161 | if (err_count == 0) |
1162 | ret = SUCCESS; | |
1163 | ||
1164 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1165 | ||
1166 | /* | |
1167 | * All outstanding txcmplq I/Os should have been aborted by | |
1168 | * the targets. Unfortunately, some targets do not abide by | |
1169 | * this forcing the driver to double check. | |
1170 | */ | |
6175c02a JSEC |
1171 | cnt = lpfc_sli_sum_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], |
1172 | 0, 0, LPFC_CTX_HOST); | |
1173 | if (cnt) | |
1174 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], | |
1175 | 0, 0, 0, LPFC_CTX_HOST); | |
dea3101e | 1176 | loopcnt = 0; |
6175c02a | 1177 | while(cnt) { |
dea3101e | 1178 | spin_unlock_irq(phba->host->host_lock); |
a9a3047d | 1179 | schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ); |
dea3101e | 1180 | spin_lock_irq(phba->host->host_lock); |
1181 | ||
1182 | if (++loopcnt | |
c01f3208 | 1183 | > (2 * phba->cfg_devloss_tmo)/LPFC_RESET_WAIT) |
dea3101e | 1184 | break; |
6175c02a JSEC |
1185 | |
1186 | cnt = lpfc_sli_sum_iocb(phba, | |
1187 | &phba->sli.ring[phba->sli.fcp_ring], | |
1188 | 0, 0, LPFC_CTX_HOST); | |
dea3101e | 1189 | } |
1190 | ||
1191 | if (cnt) { | |
6175c02a | 1192 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
dea3101e | 1193 | "%d:0715 Bus Reset I/O flush failure: cnt x%x left x%x\n", |
1194 | phba->brd_no, cnt, i); | |
0bd4ca25 | 1195 | ret = FAILED; |
6175c02a | 1196 | } |
dea3101e | 1197 | |
dea3101e | 1198 | lpfc_printf_log(phba, |
1199 | KERN_ERR, | |
1200 | LOG_FCP, | |
1201 | "%d:0714 SCSI layer issued Bus Reset Data: x%x\n", | |
1202 | phba->brd_no, ret); | |
1203 | out: | |
63c59c3b | 1204 | spin_unlock_irq(shost->host_lock); |
dea3101e | 1205 | return ret; |
1206 | } | |
1207 | ||
1208 | static int | |
1209 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1210 | { | |
7f0b5b19 | 1211 | struct lpfc_hba *phba = (struct lpfc_hba *)sdev->host->hostdata; |
dea3101e | 1212 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1213 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e | 1214 | uint32_t total = 0, i; |
1215 | uint32_t num_to_alloc = 0; | |
1216 | unsigned long flags; | |
dea3101e | 1217 | |
19a7b4ae | 1218 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 1219 | return -ENXIO; |
1220 | ||
19a7b4ae | 1221 | sdev->hostdata = rport->dd_data; |
dea3101e | 1222 | |
1223 | /* | |
1224 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1225 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1226 | * HBA limit conveyed to the midlayer via the host structure. The |
1227 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1228 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 1229 | */ |
1230 | total = phba->total_scsi_bufs; | |
a784efbf | 1231 | num_to_alloc = phba->cfg_lun_queue_depth + 2; |
dea3101e | 1232 | if (total >= phba->cfg_hba_queue_depth) { |
a784efbf JSEC |
1233 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
1234 | "%d:0704 At limitation of %d preallocated " | |
1235 | "command buffers\n", phba->brd_no, total); | |
dea3101e | 1236 | return 0; |
1237 | } else if (total + num_to_alloc > phba->cfg_hba_queue_depth) { | |
a784efbf JSEC |
1238 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
1239 | "%d:0705 Allocation request of %d command " | |
1240 | "buffers will exceed max of %d. Reducing " | |
1241 | "allocation request to %d.\n", phba->brd_no, | |
1242 | num_to_alloc, phba->cfg_hba_queue_depth, | |
1243 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 1244 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
1245 | } | |
1246 | ||
1247 | for (i = 0; i < num_to_alloc; i++) { | |
0bd4ca25 | 1248 | scsi_buf = lpfc_new_scsi_buf(phba); |
dea3101e | 1249 | if (!scsi_buf) { |
a784efbf JSEC |
1250 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
1251 | "%d:0706 Failed to allocate command " | |
1252 | "buffer\n", phba->brd_no); | |
dea3101e | 1253 | break; |
1254 | } | |
1255 | ||
875fbdfe | 1256 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e | 1257 | phba->total_scsi_bufs++; |
1258 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 1259 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e | 1260 | } |
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | static int | |
1265 | lpfc_slave_configure(struct scsi_device *sdev) | |
1266 | { | |
7f0b5b19 | 1267 | struct lpfc_hba *phba = (struct lpfc_hba *) sdev->host->hostdata; |
dea3101e | 1268 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); |
1269 | ||
1270 | if (sdev->tagged_supported) | |
1271 | scsi_activate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1272 | else | |
1273 | scsi_deactivate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1274 | ||
1275 | /* | |
1276 | * Initialize the fc transport attributes for the target | |
1277 | * containing this scsi device. Also note that the driver's | |
1278 | * target pointer is stored in the starget_data for the | |
1279 | * driver's sysfs entry point functions. | |
1280 | */ | |
c01f3208 | 1281 | rport->dev_loss_tmo = phba->cfg_devloss_tmo; |
dea3101e | 1282 | |
875fbdfe JSEC |
1283 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
1284 | lpfc_sli_poll_fcp_ring(phba); | |
1285 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1286 | lpfc_poll_rearm_timer(phba); | |
1287 | } | |
1288 | ||
dea3101e | 1289 | return 0; |
1290 | } | |
1291 | ||
1292 | static void | |
1293 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1294 | { | |
1295 | sdev->hostdata = NULL; | |
1296 | return; | |
1297 | } | |
1298 | ||
1299 | struct scsi_host_template lpfc_template = { | |
1300 | .module = THIS_MODULE, | |
1301 | .name = LPFC_DRIVER_NAME, | |
1302 | .info = lpfc_info, | |
1303 | .queuecommand = lpfc_queuecommand, | |
1304 | .eh_abort_handler = lpfc_abort_handler, | |
1305 | .eh_device_reset_handler= lpfc_reset_lun_handler, | |
1306 | .eh_bus_reset_handler = lpfc_reset_bus_handler, | |
1307 | .slave_alloc = lpfc_slave_alloc, | |
1308 | .slave_configure = lpfc_slave_configure, | |
1309 | .slave_destroy = lpfc_slave_destroy, | |
1310 | .this_id = -1, | |
1311 | .sg_tablesize = LPFC_SG_SEG_CNT, | |
1312 | .cmd_per_lun = LPFC_CMD_PER_LUN, | |
1313 | .use_clustering = ENABLE_CLUSTERING, | |
1314 | .shost_attrs = lpfc_host_attrs, | |
564b2960 | 1315 | .max_sectors = 0xFFFF, |
dea3101e | 1316 | }; |