Commit | Line | Data |
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dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 JSEC |
3 | * Fibre Channel Host Bus Adapters. * |
4 | * Copyright (C) 2004-2005 Emulex. All rights reserved. * | |
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> | |
24 | ||
25 | #include <scsi/scsi.h> | |
26 | #include <scsi/scsi_device.h> | |
27 | #include <scsi/scsi_host.h> | |
28 | #include <scsi/scsi_tcq.h> | |
29 | #include <scsi/scsi_transport_fc.h> | |
30 | ||
31 | #include "lpfc_version.h" | |
32 | #include "lpfc_hw.h" | |
33 | #include "lpfc_sli.h" | |
34 | #include "lpfc_disc.h" | |
35 | #include "lpfc_scsi.h" | |
36 | #include "lpfc.h" | |
37 | #include "lpfc_logmsg.h" | |
38 | #include "lpfc_crtn.h" | |
39 | ||
40 | #define LPFC_RESET_WAIT 2 | |
41 | #define LPFC_ABORT_WAIT 2 | |
42 | ||
43 | static inline void lpfc_put_lun(struct fcp_cmnd *fcmd, unsigned int lun) | |
44 | { | |
45 | fcmd->fcpLunLsl = 0; | |
46 | fcmd->fcpLunMsl = swab16((uint16_t)lun); | |
47 | } | |
48 | ||
49 | /* | |
50 | * This routine allocates a scsi buffer, which contains all the necessary | |
51 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
52 | * contains information to build the IOCB. The DMAable region contains | |
53 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
54 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
55 | * and the BPL BDE is setup in the IOCB. | |
56 | */ | |
57 | static struct lpfc_scsi_buf * | |
58 | lpfc_get_scsi_buf(struct lpfc_hba * phba) | |
59 | { | |
60 | struct lpfc_scsi_buf *psb; | |
61 | struct ulp_bde64 *bpl; | |
62 | IOCB_t *iocb; | |
63 | dma_addr_t pdma_phys; | |
64 | ||
65 | psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
66 | if (!psb) | |
67 | return NULL; | |
68 | memset(psb, 0, sizeof (struct lpfc_scsi_buf)); | |
69 | psb->scsi_hba = phba; | |
70 | ||
71 | /* | |
72 | * Get memory from the pci pool to map the virt space to pci bus space | |
73 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
74 | * struct fcp_rsp and the number of bde's necessary to support the | |
75 | * sg_tablesize. | |
76 | */ | |
77 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
78 | &psb->dma_handle); | |
79 | if (!psb->data) { | |
80 | kfree(psb); | |
81 | return NULL; | |
82 | } | |
83 | ||
84 | /* Initialize virtual ptrs to dma_buf region. */ | |
85 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
86 | ||
87 | psb->fcp_cmnd = psb->data; | |
88 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
89 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
90 | sizeof(struct fcp_rsp); | |
91 | ||
92 | /* Initialize local short-hand pointers. */ | |
93 | bpl = psb->fcp_bpl; | |
94 | pdma_phys = psb->dma_handle; | |
95 | ||
96 | /* | |
97 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
98 | * list bdes. Initialize the first two and leave the rest for | |
99 | * queuecommand. | |
100 | */ | |
101 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
102 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
103 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); | |
104 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; | |
105 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
106 | bpl++; | |
107 | ||
108 | /* Setup the physical region for the FCP RSP */ | |
109 | pdma_phys += sizeof (struct fcp_cmnd); | |
110 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
111 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
112 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); | |
113 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); | |
114 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
115 | ||
116 | /* | |
117 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
118 | * initialize it with all known data now. | |
119 | */ | |
120 | pdma_phys += (sizeof (struct fcp_rsp)); | |
121 | iocb = &psb->cur_iocbq.iocb; | |
122 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
123 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); | |
124 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); | |
125 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); | |
126 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; | |
127 | iocb->ulpBdeCount = 1; | |
128 | iocb->ulpClass = CLASS3; | |
129 | ||
130 | return psb; | |
131 | } | |
132 | ||
133 | static void | |
134 | lpfc_free_scsi_buf(struct lpfc_scsi_buf * psb) | |
135 | { | |
136 | struct lpfc_hba *phba = psb->scsi_hba; | |
137 | ||
138 | /* | |
139 | * There are only two special cases to consider. (1) the scsi command | |
140 | * requested scatter-gather usage or (2) the scsi command allocated | |
141 | * a request buffer, but did not request use_sg. There is a third | |
142 | * case, but it does not require resource deallocation. | |
143 | */ | |
144 | if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) { | |
145 | dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer, | |
146 | psb->seg_cnt, psb->pCmd->sc_data_direction); | |
147 | } else { | |
148 | if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) { | |
149 | dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys, | |
150 | psb->pCmd->request_bufflen, | |
151 | psb->pCmd->sc_data_direction); | |
152 | } | |
153 | } | |
154 | ||
155 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); | |
156 | } | |
157 | ||
158 | static int | |
159 | lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd) | |
160 | { | |
161 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
162 | struct scatterlist *sgel = NULL; | |
163 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
164 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
165 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
166 | dma_addr_t physaddr; | |
167 | uint32_t i, num_bde = 0; | |
168 | int datadir = scsi_cmnd->sc_data_direction; | |
169 | int dma_error; | |
170 | ||
171 | /* | |
172 | * There are three possibilities here - use scatter-gather segment, use | |
173 | * the single mapping, or neither. Start the lpfc command prep by | |
174 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
175 | * data bde entry. | |
176 | */ | |
177 | bpl += 2; | |
178 | if (scsi_cmnd->use_sg) { | |
179 | /* | |
180 | * The driver stores the segment count returned from pci_map_sg | |
181 | * because this a count of dma-mappings used to map the use_sg | |
182 | * pages. They are not guaranteed to be the same for those | |
183 | * architectures that implement an IOMMU. | |
184 | */ | |
185 | sgel = (struct scatterlist *)scsi_cmnd->request_buffer; | |
186 | lpfc_cmd->seg_cnt = dma_map_sg(&phba->pcidev->dev, sgel, | |
187 | scsi_cmnd->use_sg, datadir); | |
188 | if (lpfc_cmd->seg_cnt == 0) | |
189 | return 1; | |
190 | ||
191 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
192 | printk(KERN_ERR "%s: Too many sg segments from " | |
193 | "dma_map_sg. Config %d, seg_cnt %d", | |
194 | __FUNCTION__, phba->cfg_sg_seg_cnt, | |
195 | lpfc_cmd->seg_cnt); | |
196 | dma_unmap_sg(&phba->pcidev->dev, sgel, | |
197 | lpfc_cmd->seg_cnt, datadir); | |
198 | return 1; | |
199 | } | |
200 | ||
201 | /* | |
202 | * The driver established a maximum scatter-gather segment count | |
203 | * during probe that limits the number of sg elements in any | |
204 | * single scsi command. Just run through the seg_cnt and format | |
205 | * the bde's. | |
206 | */ | |
207 | for (i = 0; i < lpfc_cmd->seg_cnt; i++) { | |
208 | physaddr = sg_dma_address(sgel); | |
209 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
210 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
211 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
212 | if (datadir == DMA_TO_DEVICE) | |
213 | bpl->tus.f.bdeFlags = 0; | |
214 | else | |
215 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
216 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
217 | bpl++; | |
218 | sgel++; | |
219 | num_bde++; | |
220 | } | |
221 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { | |
222 | physaddr = dma_map_single(&phba->pcidev->dev, | |
223 | scsi_cmnd->request_buffer, | |
224 | scsi_cmnd->request_bufflen, | |
225 | datadir); | |
226 | dma_error = dma_mapping_error(physaddr); | |
227 | if (dma_error) { | |
228 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
229 | "%d:0718 Unable to dma_map_single " | |
230 | "request_buffer: x%x\n", | |
231 | phba->brd_no, dma_error); | |
232 | return 1; | |
233 | } | |
234 | ||
235 | lpfc_cmd->nonsg_phys = physaddr; | |
236 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
237 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
238 | bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen; | |
239 | if (datadir == DMA_TO_DEVICE) | |
240 | bpl->tus.f.bdeFlags = 0; | |
241 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
242 | num_bde = 1; | |
243 | bpl++; | |
244 | } | |
245 | ||
246 | /* | |
247 | * Finish initializing those IOCB fields that are dependent on the | |
248 | * scsi_cmnd request_buffer | |
249 | */ | |
250 | iocb_cmd->un.fcpi64.bdl.bdeSize += | |
251 | (num_bde * sizeof (struct ulp_bde64)); | |
252 | iocb_cmd->ulpBdeCount = 1; | |
253 | iocb_cmd->ulpLe = 1; | |
254 | fcp_cmnd->fcpDl = be32_to_cpu(scsi_cmnd->request_bufflen); | |
255 | return 0; | |
256 | } | |
257 | ||
258 | static void | |
259 | lpfc_handle_fcp_err(struct lpfc_scsi_buf *lpfc_cmd) | |
260 | { | |
261 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
262 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
263 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
264 | struct lpfc_hba *phba = lpfc_cmd->scsi_hba; | |
265 | uint32_t fcpi_parm = lpfc_cmd->cur_iocbq.iocb.un.fcpi.fcpi_parm; | |
266 | uint32_t resp_info = fcprsp->rspStatus2; | |
267 | uint32_t scsi_status = fcprsp->rspStatus3; | |
268 | uint32_t host_status = DID_OK; | |
269 | uint32_t rsplen = 0; | |
270 | ||
271 | /* | |
272 | * If this is a task management command, there is no | |
273 | * scsi packet associated with this lpfc_cmd. The driver | |
274 | * consumes it. | |
275 | */ | |
276 | if (fcpcmd->fcpCntl2) { | |
277 | scsi_status = 0; | |
278 | goto out; | |
279 | } | |
280 | ||
281 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
282 | "%d:0730 FCP command failed: RSP " | |
283 | "Data: x%x x%x x%x x%x x%x x%x\n", | |
284 | phba->brd_no, resp_info, scsi_status, | |
285 | be32_to_cpu(fcprsp->rspResId), | |
286 | be32_to_cpu(fcprsp->rspSnsLen), | |
287 | be32_to_cpu(fcprsp->rspRspLen), | |
288 | fcprsp->rspInfo3); | |
289 | ||
290 | if (resp_info & RSP_LEN_VALID) { | |
291 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
292 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
293 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
294 | host_status = DID_ERROR; | |
295 | goto out; | |
296 | } | |
297 | } | |
298 | ||
299 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { | |
300 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
301 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
302 | snslen = SCSI_SENSE_BUFFERSIZE; | |
303 | ||
304 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
305 | } | |
306 | ||
307 | cmnd->resid = 0; | |
308 | if (resp_info & RESID_UNDER) { | |
309 | cmnd->resid = be32_to_cpu(fcprsp->rspResId); | |
310 | ||
311 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
312 | "%d:0716 FCP Read Underrun, expected %d, " | |
313 | "residual %d Data: x%x x%x x%x\n", phba->brd_no, | |
314 | be32_to_cpu(fcpcmd->fcpDl), cmnd->resid, | |
315 | fcpi_parm, cmnd->cmnd[0], cmnd->underflow); | |
316 | ||
317 | /* | |
318 | * The cmnd->underflow is the minimum number of bytes that must | |
319 | * be transfered for this command. Provided a sense condition | |
320 | * is not present, make sure the actual amount transferred is at | |
321 | * least the underflow value or fail. | |
322 | */ | |
323 | if (!(resp_info & SNS_LEN_VALID) && | |
324 | (scsi_status == SAM_STAT_GOOD) && | |
325 | (cmnd->request_bufflen - cmnd->resid) < cmnd->underflow) { | |
326 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
327 | "%d:0717 FCP command x%x residual " | |
328 | "underrun converted to error " | |
329 | "Data: x%x x%x x%x\n", phba->brd_no, | |
330 | cmnd->cmnd[0], cmnd->request_bufflen, | |
331 | cmnd->resid, cmnd->underflow); | |
332 | ||
333 | host_status = DID_ERROR; | |
334 | } | |
335 | } else if (resp_info & RESID_OVER) { | |
336 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
337 | "%d:0720 FCP command x%x residual " | |
338 | "overrun error. Data: x%x x%x \n", | |
339 | phba->brd_no, cmnd->cmnd[0], | |
340 | cmnd->request_bufflen, cmnd->resid); | |
341 | host_status = DID_ERROR; | |
342 | ||
343 | /* | |
344 | * Check SLI validation that all the transfer was actually done | |
345 | * (fcpi_parm should be zero). Apply check only to reads. | |
346 | */ | |
347 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
348 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
349 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
350 | "%d:0734 FCP Read Check Error Data: " | |
351 | "x%x x%x x%x x%x\n", phba->brd_no, | |
352 | be32_to_cpu(fcpcmd->fcpDl), | |
353 | be32_to_cpu(fcprsp->rspResId), | |
354 | fcpi_parm, cmnd->cmnd[0]); | |
355 | host_status = DID_ERROR; | |
356 | cmnd->resid = cmnd->request_bufflen; | |
357 | } | |
358 | ||
359 | out: | |
360 | cmnd->result = ScsiResult(host_status, scsi_status); | |
361 | } | |
362 | ||
363 | static void | |
364 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
365 | struct lpfc_iocbq *pIocbOut) | |
366 | { | |
367 | struct lpfc_scsi_buf *lpfc_cmd = | |
368 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
369 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
370 | struct lpfc_nodelist *pnode = rdata->pnode; | |
371 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
372 | unsigned long iflag; | |
373 | ||
374 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
375 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
376 | ||
377 | if (lpfc_cmd->status) { | |
378 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
379 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
380 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
381 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
382 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
383 | ||
384 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
385 | "%d:0729 FCP cmd x%x failed <%d/%d> status: " | |
386 | "x%x result: x%x Data: x%x x%x\n", | |
387 | phba->brd_no, cmd->cmnd[0], cmd->device->id, | |
388 | cmd->device->lun, lpfc_cmd->status, | |
389 | lpfc_cmd->result, pIocbOut->iocb.ulpContext, | |
390 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
391 | ||
392 | switch (lpfc_cmd->status) { | |
393 | case IOSTAT_FCP_RSP_ERROR: | |
394 | /* Call FCP RSP handler to determine result */ | |
395 | lpfc_handle_fcp_err(lpfc_cmd); | |
396 | break; | |
397 | case IOSTAT_NPORT_BSY: | |
398 | case IOSTAT_FABRIC_BSY: | |
399 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); | |
400 | break; | |
401 | default: | |
402 | cmd->result = ScsiResult(DID_ERROR, 0); | |
403 | break; | |
404 | } | |
405 | ||
406 | if (pnode) { | |
407 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) | |
408 | cmd->result = ScsiResult(DID_BUS_BUSY, | |
409 | SAM_STAT_BUSY); | |
410 | } | |
411 | else { | |
412 | cmd->result = ScsiResult(DID_NO_CONNECT, 0); | |
413 | } | |
414 | } else { | |
415 | cmd->result = ScsiResult(DID_OK, 0); | |
416 | } | |
417 | ||
418 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
419 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
420 | ||
421 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
422 | "%d:0710 Iodone <%d/%d> cmd %p, error x%x " | |
423 | "SNS x%x x%x Data: x%x x%x\n", | |
424 | phba->brd_no, cmd->device->id, | |
425 | cmd->device->lun, cmd, cmd->result, | |
426 | *lp, *(lp + 3), cmd->retries, cmd->resid); | |
427 | } | |
428 | ||
429 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
430 | lpfc_free_scsi_buf(lpfc_cmd); | |
431 | cmd->host_scribble = NULL; | |
432 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
433 | ||
434 | cmd->scsi_done(cmd); | |
435 | } | |
436 | ||
437 | static void | |
438 | lpfc_scsi_prep_cmnd(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd, | |
439 | struct lpfc_nodelist *pnode) | |
440 | { | |
441 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
442 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
443 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
444 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
445 | int datadir = scsi_cmnd->sc_data_direction; | |
446 | ||
447 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; | |
448 | ||
449 | lpfc_put_lun(lpfc_cmd->fcp_cmnd, lpfc_cmd->pCmd->device->lun); | |
450 | ||
451 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
452 | ||
453 | if (scsi_cmnd->device->tagged_supported) { | |
454 | switch (scsi_cmnd->tag) { | |
455 | case HEAD_OF_QUEUE_TAG: | |
456 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
457 | break; | |
458 | case ORDERED_QUEUE_TAG: | |
459 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
460 | break; | |
461 | default: | |
462 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
463 | break; | |
464 | } | |
465 | } else | |
466 | fcp_cmnd->fcpCntl1 = 0; | |
467 | ||
468 | /* | |
469 | * There are three possibilities here - use scatter-gather segment, use | |
470 | * the single mapping, or neither. Start the lpfc command prep by | |
471 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
472 | * data bde entry. | |
473 | */ | |
474 | if (scsi_cmnd->use_sg) { | |
475 | if (datadir == DMA_TO_DEVICE) { | |
476 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
477 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
478 | iocb_cmd->ulpPU = 0; | |
479 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
480 | phba->fc4OutputRequests++; | |
481 | } else { | |
482 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
483 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
484 | iocb_cmd->un.fcpi.fcpi_parm = | |
485 | scsi_cmnd->request_bufflen; | |
486 | fcp_cmnd->fcpCntl3 = READ_DATA; | |
487 | phba->fc4InputRequests++; | |
488 | } | |
489 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { | |
490 | if (datadir == DMA_TO_DEVICE) { | |
491 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
492 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
493 | iocb_cmd->ulpPU = 0; | |
494 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
495 | phba->fc4OutputRequests++; | |
496 | } else { | |
497 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
498 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
499 | iocb_cmd->un.fcpi.fcpi_parm = | |
500 | scsi_cmnd->request_bufflen; | |
501 | fcp_cmnd->fcpCntl3 = READ_DATA; | |
502 | phba->fc4InputRequests++; | |
503 | } | |
504 | } else { | |
505 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
506 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
507 | iocb_cmd->ulpPU = 0; | |
508 | fcp_cmnd->fcpCntl3 = 0; | |
509 | phba->fc4ControlRequests++; | |
510 | } | |
511 | ||
512 | /* | |
513 | * Finish initializing those IOCB fields that are independent | |
514 | * of the scsi_cmnd request_buffer | |
515 | */ | |
516 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
517 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
518 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
519 | ||
520 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
521 | piocbq->context1 = lpfc_cmd; | |
522 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
523 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
524 | } | |
525 | ||
526 | static int | |
527 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_hba *phba, | |
528 | struct lpfc_scsi_buf *lpfc_cmd, | |
529 | uint8_t task_mgmt_cmd) | |
530 | { | |
531 | struct lpfc_sli *psli; | |
532 | struct lpfc_iocbq *piocbq; | |
533 | IOCB_t *piocb; | |
534 | struct fcp_cmnd *fcp_cmnd; | |
535 | struct scsi_device *scsi_dev = lpfc_cmd->pCmd->device; | |
536 | struct lpfc_rport_data *rdata = scsi_dev->hostdata; | |
537 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
538 | ||
539 | if ((ndlp == 0) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { | |
540 | return 0; | |
541 | } | |
542 | ||
543 | psli = &phba->sli; | |
544 | piocbq = &(lpfc_cmd->cur_iocbq); | |
545 | piocb = &piocbq->iocb; | |
546 | ||
547 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
548 | lpfc_put_lun(lpfc_cmd->fcp_cmnd, lpfc_cmd->pCmd->device->lun); | |
549 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; | |
550 | ||
551 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; | |
552 | ||
553 | piocb->ulpContext = ndlp->nlp_rpi; | |
554 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
555 | piocb->ulpFCP2Rcvy = 1; | |
556 | } | |
557 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
558 | ||
559 | /* ulpTimeout is only one byte */ | |
560 | if (lpfc_cmd->timeout > 0xff) { | |
561 | /* | |
562 | * Do not timeout the command at the firmware level. | |
563 | * The driver will provide the timeout mechanism. | |
564 | */ | |
565 | piocb->ulpTimeout = 0; | |
566 | } else { | |
567 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
568 | } | |
569 | ||
570 | lpfc_cmd->rdata = rdata; | |
571 | ||
572 | switch (task_mgmt_cmd) { | |
573 | case FCP_LUN_RESET: | |
574 | /* Issue LUN Reset to TGT <num> LUN <num> */ | |
575 | lpfc_printf_log(phba, | |
576 | KERN_INFO, | |
577 | LOG_FCP, | |
578 | "%d:0703 Issue LUN Reset to TGT %d LUN %d " | |
579 | "Data: x%x x%x\n", | |
580 | phba->brd_no, | |
581 | scsi_dev->id, scsi_dev->lun, | |
582 | ndlp->nlp_rpi, ndlp->nlp_flag); | |
583 | ||
584 | break; | |
585 | case FCP_ABORT_TASK_SET: | |
586 | /* Issue Abort Task Set to TGT <num> LUN <num> */ | |
587 | lpfc_printf_log(phba, | |
588 | KERN_INFO, | |
589 | LOG_FCP, | |
590 | "%d:0701 Issue Abort Task Set to TGT %d LUN %d " | |
591 | "Data: x%x x%x\n", | |
592 | phba->brd_no, | |
593 | scsi_dev->id, scsi_dev->lun, | |
594 | ndlp->nlp_rpi, ndlp->nlp_flag); | |
595 | ||
596 | break; | |
597 | case FCP_TARGET_RESET: | |
598 | /* Issue Target Reset to TGT <num> */ | |
599 | lpfc_printf_log(phba, | |
600 | KERN_INFO, | |
601 | LOG_FCP, | |
602 | "%d:0702 Issue Target Reset to TGT %d " | |
603 | "Data: x%x x%x\n", | |
604 | phba->brd_no, | |
605 | scsi_dev->id, ndlp->nlp_rpi, | |
606 | ndlp->nlp_flag); | |
607 | break; | |
608 | } | |
609 | ||
610 | return (1); | |
611 | } | |
612 | ||
613 | static int | |
614 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba) | |
615 | { | |
616 | struct lpfc_iocbq *iocbq; | |
617 | struct lpfc_iocbq *iocbqrsp = NULL; | |
618 | struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; | |
619 | int ret; | |
620 | ||
621 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_TARGET_RESET); | |
622 | if (!ret) | |
623 | return FAILED; | |
624 | ||
625 | lpfc_cmd->scsi_hba = phba; | |
626 | iocbq = &lpfc_cmd->cur_iocbq; | |
627 | list_remove_head(lpfc_iocb_list, iocbqrsp, struct lpfc_iocbq, list); | |
628 | if (!iocbqrsp) | |
629 | return FAILED; | |
630 | memset(iocbqrsp, 0, sizeof (struct lpfc_iocbq)); | |
631 | ||
632 | iocbq->iocb_flag |= LPFC_IO_POLL; | |
633 | ret = lpfc_sli_issue_iocb_wait_high_priority(phba, | |
634 | &phba->sli.ring[phba->sli.fcp_ring], | |
635 | iocbq, SLI_IOCB_HIGH_PRIORITY, | |
636 | iocbqrsp, | |
637 | lpfc_cmd->timeout); | |
638 | if (ret != IOCB_SUCCESS) { | |
639 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
640 | ret = FAILED; | |
641 | } else { | |
642 | ret = SUCCESS; | |
643 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
644 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
645 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
646 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
647 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
648 | } | |
649 | ||
650 | /* | |
651 | * All outstanding txcmplq I/Os should have been aborted by the target. | |
652 | * Unfortunately, some targets do not abide by this forcing the driver | |
653 | * to double check. | |
654 | */ | |
655 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], | |
656 | lpfc_cmd->pCmd->device->id, | |
657 | lpfc_cmd->pCmd->device->lun, 0, LPFC_CTX_TGT); | |
658 | ||
659 | /* Return response IOCB to free list. */ | |
660 | list_add_tail(&iocbqrsp->list, lpfc_iocb_list); | |
661 | return ret; | |
662 | } | |
663 | ||
664 | static void | |
665 | lpfc_scsi_cmd_iocb_cleanup (struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
666 | struct lpfc_iocbq *pIocbOut) | |
667 | { | |
668 | unsigned long iflag; | |
669 | struct lpfc_scsi_buf *lpfc_cmd = | |
670 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
671 | ||
672 | spin_lock_irqsave(phba->host->host_lock, iflag); | |
673 | lpfc_free_scsi_buf(lpfc_cmd); | |
674 | spin_unlock_irqrestore(phba->host->host_lock, iflag); | |
675 | } | |
676 | ||
677 | static void | |
678 | lpfc_scsi_cmd_iocb_cmpl_aborted(struct lpfc_hba *phba, | |
679 | struct lpfc_iocbq *pIocbIn, | |
680 | struct lpfc_iocbq *pIocbOut) | |
681 | { | |
682 | struct scsi_cmnd *ml_cmd = | |
683 | ((struct lpfc_scsi_buf *) pIocbIn->context1)->pCmd; | |
684 | ||
685 | lpfc_scsi_cmd_iocb_cleanup (phba, pIocbIn, pIocbOut); | |
686 | ml_cmd->host_scribble = NULL; | |
687 | } | |
688 | ||
689 | const char * | |
690 | lpfc_info(struct Scsi_Host *host) | |
691 | { | |
692 | struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0]; | |
693 | int len; | |
694 | static char lpfcinfobuf[384]; | |
695 | ||
696 | memset(lpfcinfobuf,0,384); | |
697 | if (phba && phba->pcidev){ | |
698 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
699 | len = strlen(lpfcinfobuf); | |
700 | snprintf(lpfcinfobuf + len, | |
701 | 384-len, | |
702 | " on PCI bus %02x device %02x irq %d", | |
703 | phba->pcidev->bus->number, | |
704 | phba->pcidev->devfn, | |
705 | phba->pcidev->irq); | |
706 | len = strlen(lpfcinfobuf); | |
707 | if (phba->Port[0]) { | |
708 | snprintf(lpfcinfobuf + len, | |
709 | 384-len, | |
710 | " port %s", | |
711 | phba->Port); | |
712 | } | |
713 | } | |
714 | return lpfcinfobuf; | |
715 | } | |
716 | ||
717 | static int | |
718 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
719 | { | |
720 | struct lpfc_hba *phba = | |
721 | (struct lpfc_hba *) cmnd->device->host->hostdata[0]; | |
722 | struct lpfc_sli *psli = &phba->sli; | |
723 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
724 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
725 | struct lpfc_scsi_buf *lpfc_cmd = NULL; | |
726 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
727 | int err = 0; | |
728 | ||
729 | /* | |
730 | * The target pointer is guaranteed not to be NULL because the driver | |
731 | * only clears the device->hostdata field in lpfc_slave_destroy. This | |
732 | * approach guarantees no further IO calls on this target. | |
733 | */ | |
734 | if (!ndlp) { | |
735 | cmnd->result = ScsiResult(DID_NO_CONNECT, 0); | |
736 | goto out_fail_command; | |
737 | } | |
738 | ||
739 | /* | |
740 | * A Fibre Channel target is present and functioning only when the node | |
741 | * state is MAPPED. Any other state is a failure. | |
742 | */ | |
743 | if (ndlp->nlp_state != NLP_STE_MAPPED_NODE) { | |
744 | if ((ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) || | |
745 | (ndlp->nlp_state == NLP_STE_UNUSED_NODE)) { | |
746 | cmnd->result = ScsiResult(DID_NO_CONNECT, 0); | |
747 | goto out_fail_command; | |
748 | } | |
749 | /* | |
750 | * The device is most likely recovered and the driver | |
751 | * needs a bit more time to finish. Ask the midlayer | |
752 | * to retry. | |
753 | */ | |
754 | goto out_host_busy; | |
755 | } | |
756 | ||
757 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); | |
758 | if (lpfc_cmd == NULL) { | |
759 | printk(KERN_WARNING "%s: No buffer available - list empty, " | |
760 | "total count %d\n", __FUNCTION__, phba->total_scsi_bufs); | |
761 | goto out_host_busy; | |
762 | } | |
763 | ||
764 | /* | |
765 | * Store the midlayer's command structure for the completion phase | |
766 | * and complete the command initialization. | |
767 | */ | |
768 | lpfc_cmd->pCmd = cmnd; | |
769 | lpfc_cmd->rdata = rdata; | |
770 | lpfc_cmd->timeout = 0; | |
771 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
772 | cmnd->scsi_done = done; | |
773 | ||
774 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
775 | if (err) | |
776 | goto out_host_busy_free_buf; | |
777 | ||
778 | lpfc_scsi_prep_cmnd(phba, lpfc_cmd, ndlp); | |
779 | ||
780 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
781 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); | |
782 | if (err) | |
783 | goto out_host_busy_free_buf; | |
784 | return 0; | |
785 | ||
786 | out_host_busy_free_buf: | |
787 | lpfc_free_scsi_buf(lpfc_cmd); | |
788 | cmnd->host_scribble = NULL; | |
789 | out_host_busy: | |
790 | return SCSI_MLQUEUE_HOST_BUSY; | |
791 | ||
792 | out_fail_command: | |
793 | done(cmnd); | |
794 | return 0; | |
795 | } | |
796 | ||
797 | static int | |
8fa728a2 | 798 | __lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 799 | { |
800 | struct lpfc_hba *phba = | |
801 | (struct lpfc_hba *)cmnd->device->host->hostdata[0]; | |
802 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; | |
803 | struct lpfc_iocbq *iocb, *next_iocb; | |
804 | struct lpfc_iocbq *abtsiocb = NULL; | |
805 | struct lpfc_scsi_buf *lpfc_cmd; | |
806 | struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; | |
807 | IOCB_t *cmd, *icmd; | |
808 | unsigned long snum; | |
809 | unsigned int id, lun; | |
810 | unsigned int loop_count = 0; | |
811 | int ret = IOCB_SUCCESS; | |
812 | ||
813 | /* | |
814 | * If the host_scribble data area is NULL, then the driver has already | |
815 | * completed this command, but the midlayer did not see the completion | |
816 | * before the eh fired. Just return SUCCESS. | |
817 | */ | |
818 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; | |
819 | if (!lpfc_cmd) | |
820 | return SUCCESS; | |
821 | ||
822 | /* save these now since lpfc_cmd can be freed */ | |
823 | id = lpfc_cmd->pCmd->device->id; | |
824 | lun = lpfc_cmd->pCmd->device->lun; | |
825 | snum = lpfc_cmd->pCmd->serial_number; | |
826 | ||
827 | list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { | |
828 | cmd = &iocb->iocb; | |
829 | if (iocb->context1 != lpfc_cmd) | |
830 | continue; | |
831 | ||
832 | list_del_init(&iocb->list); | |
833 | pring->txq_cnt--; | |
834 | if (!iocb->iocb_cmpl) { | |
835 | list_add_tail(&iocb->list, lpfc_iocb_list); | |
836 | } | |
837 | else { | |
838 | cmd->ulpStatus = IOSTAT_LOCAL_REJECT; | |
839 | cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; | |
840 | lpfc_scsi_cmd_iocb_cmpl_aborted(phba, iocb, iocb); | |
841 | } | |
842 | ||
843 | goto out; | |
844 | } | |
845 | ||
846 | list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq, list); | |
847 | if (abtsiocb == NULL) | |
848 | return FAILED; | |
849 | ||
850 | memset(abtsiocb, 0, sizeof (struct lpfc_iocbq)); | |
851 | ||
852 | /* | |
853 | * The scsi command was not in the txq. Check the txcmplq and if it is | |
854 | * found, send an abort to the FW. | |
855 | */ | |
856 | list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { | |
857 | if (iocb->context1 != lpfc_cmd) | |
858 | continue; | |
859 | ||
860 | iocb->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl_aborted; | |
861 | cmd = &iocb->iocb; | |
862 | icmd = &abtsiocb->iocb; | |
863 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
864 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
865 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
866 | ||
867 | icmd->ulpLe = 1; | |
868 | icmd->ulpClass = cmd->ulpClass; | |
869 | if (phba->hba_state >= LPFC_LINK_UP) | |
870 | icmd->ulpCommand = CMD_ABORT_XRI_CN; | |
871 | else | |
872 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
873 | ||
5eb95af0 | 874 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
dea3101e | 875 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == |
876 | IOCB_ERROR) { | |
877 | list_add_tail(&abtsiocb->list, lpfc_iocb_list); | |
878 | ret = IOCB_ERROR; | |
879 | break; | |
880 | } | |
881 | ||
882 | /* Wait for abort to complete */ | |
883 | while (cmnd->host_scribble) | |
884 | { | |
885 | spin_unlock_irq(phba->host->host_lock); | |
886 | set_current_state(TASK_UNINTERRUPTIBLE); | |
887 | schedule_timeout(LPFC_ABORT_WAIT*HZ); | |
888 | spin_lock_irq(phba->host->host_lock); | |
889 | if (++loop_count | |
890 | > (2 * phba->cfg_nodev_tmo)/LPFC_ABORT_WAIT) | |
891 | break; | |
892 | } | |
893 | ||
894 | if(cmnd->host_scribble) { | |
895 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
896 | "%d:0748 abort handler timed " | |
897 | "out waiting for abort to " | |
898 | "complete. Data: " | |
899 | "x%x x%x x%x x%lx\n", | |
900 | phba->brd_no, ret, id, lun, snum); | |
901 | cmnd->host_scribble = NULL; | |
902 | iocb->iocb_cmpl = lpfc_scsi_cmd_iocb_cleanup; | |
903 | ret = IOCB_ERROR; | |
904 | } | |
905 | ||
906 | break; | |
907 | } | |
908 | ||
909 | out: | |
910 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
911 | "%d:0749 SCSI layer issued abort device " | |
912 | "Data: x%x x%x x%x x%lx\n", | |
913 | phba->brd_no, ret, id, lun, snum); | |
914 | ||
915 | return ret == IOCB_SUCCESS ? SUCCESS : FAILED; | |
916 | } | |
917 | ||
8fa728a2 JG |
918 | static int |
919 | lpfc_abort_handler(struct scsi_cmnd *cmnd) | |
920 | { | |
921 | int rc; | |
922 | spin_lock_irq(cmnd->device->host->host_lock); | |
923 | rc = __lpfc_abort_handler(cmnd); | |
924 | spin_unlock_irq(cmnd->device->host->host_lock); | |
925 | return rc; | |
926 | } | |
927 | ||
dea3101e | 928 | static int |
94d0e7b8 | 929 | __lpfc_reset_lun_handler(struct scsi_cmnd *cmnd) |
dea3101e | 930 | { |
931 | struct Scsi_Host *shost = cmnd->device->host; | |
932 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; | |
933 | struct lpfc_sli *psli = &phba->sli; | |
934 | struct lpfc_scsi_buf *lpfc_cmd = NULL; | |
935 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
936 | struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; | |
937 | struct lpfc_iocbq *iocbq, *iocbqrsp = NULL; | |
938 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
939 | struct lpfc_nodelist *pnode = rdata->pnode; | |
940 | int ret = FAILED; | |
941 | int cnt, loopcnt; | |
942 | ||
943 | /* | |
944 | * If target is not in a MAPPED state, delay the reset until | |
945 | * target is rediscovered or nodev timeout expires. | |
946 | */ | |
947 | while ( 1 ) { | |
948 | if (!pnode) | |
949 | break; | |
950 | ||
951 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
952 | spin_unlock_irq(phba->host->host_lock); | |
953 | set_current_state(TASK_UNINTERRUPTIBLE); | |
954 | schedule_timeout( HZ/2); | |
955 | spin_lock_irq(phba->host->host_lock); | |
956 | } | |
957 | if ((pnode) && (pnode->nlp_state == NLP_STE_MAPPED_NODE)) | |
958 | break; | |
959 | } | |
960 | ||
961 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); | |
962 | if (lpfc_cmd == NULL) | |
963 | goto out; | |
964 | ||
965 | lpfc_cmd->pCmd = cmnd; | |
966 | lpfc_cmd->timeout = 60; | |
967 | lpfc_cmd->scsi_hba = phba; | |
968 | ||
969 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_LUN_RESET); | |
970 | if (!ret) | |
971 | goto out_free_scsi_buf; | |
972 | ||
973 | iocbq = &lpfc_cmd->cur_iocbq; | |
974 | ||
975 | /* get a buffer for this IOCB command response */ | |
976 | list_remove_head(lpfc_iocb_list, iocbqrsp, struct lpfc_iocbq, list); | |
977 | if (iocbqrsp == NULL) | |
978 | goto out_free_scsi_buf; | |
979 | ||
980 | memset(iocbqrsp, 0, sizeof (struct lpfc_iocbq)); | |
981 | ||
982 | iocbq->iocb_flag |= LPFC_IO_POLL; | |
983 | iocbq->iocb_cmpl = lpfc_sli_wake_iocb_high_priority; | |
984 | ||
985 | ret = lpfc_sli_issue_iocb_wait_high_priority(phba, | |
986 | &phba->sli.ring[psli->fcp_ring], | |
987 | iocbq, 0, iocbqrsp, 60); | |
988 | if (ret == IOCB_SUCCESS) | |
989 | ret = SUCCESS; | |
990 | ||
991 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
992 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
993 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT) | |
994 | if (lpfc_cmd->result & IOERR_DRVR_MASK) | |
995 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
996 | ||
997 | /* | |
998 | * All outstanding txcmplq I/Os should have been aborted by the target. | |
999 | * Unfortunately, some targets do not abide by this forcing the driver | |
1000 | * to double check. | |
1001 | */ | |
1002 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], | |
1003 | cmnd->device->id, cmnd->device->lun, 0, | |
1004 | LPFC_CTX_LUN); | |
1005 | ||
1006 | loopcnt = 0; | |
1007 | while((cnt = lpfc_sli_sum_iocb(phba, | |
1008 | &phba->sli.ring[phba->sli.fcp_ring], | |
1009 | cmnd->device->id, cmnd->device->lun, | |
1010 | LPFC_CTX_LUN))) { | |
1011 | spin_unlock_irq(phba->host->host_lock); | |
1012 | set_current_state(TASK_UNINTERRUPTIBLE); | |
1013 | schedule_timeout(LPFC_RESET_WAIT*HZ); | |
1014 | spin_lock_irq(phba->host->host_lock); | |
1015 | ||
1016 | if (++loopcnt | |
1017 | > (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT) | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | if (cnt) { | |
1022 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
1023 | "%d:0719 LUN Reset I/O flush failure: cnt x%x\n", | |
1024 | phba->brd_no, cnt); | |
1025 | } | |
1026 | ||
1027 | list_add_tail(&iocbqrsp->list, lpfc_iocb_list); | |
1028 | ||
1029 | out_free_scsi_buf: | |
1030 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
1031 | "%d:0713 SCSI layer issued LUN reset (%d, %d) " | |
1032 | "Data: x%x x%x x%x\n", | |
1033 | phba->brd_no, lpfc_cmd->pCmd->device->id, | |
1034 | lpfc_cmd->pCmd->device->lun, ret, lpfc_cmd->status, | |
1035 | lpfc_cmd->result); | |
1036 | lpfc_free_scsi_buf(lpfc_cmd); | |
1037 | out: | |
1038 | return ret; | |
1039 | } | |
1040 | ||
94d0e7b8 JG |
1041 | static int |
1042 | lpfc_reset_lun_handler(struct scsi_cmnd *cmnd) | |
1043 | { | |
1044 | int rc; | |
1045 | spin_lock_irq(cmnd->device->host->host_lock); | |
1046 | rc = __lpfc_reset_lun_handler(cmnd); | |
1047 | spin_unlock_irq(cmnd->device->host->host_lock); | |
1048 | return rc; | |
1049 | } | |
1050 | ||
dea3101e | 1051 | /* |
1052 | * Note: midlayer calls this function with the host_lock held | |
1053 | */ | |
1054 | static int | |
68b3aa7c | 1055 | __lpfc_reset_bus_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1056 | { |
1057 | struct Scsi_Host *shost = cmnd->device->host; | |
1058 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; | |
1059 | struct lpfc_nodelist *ndlp = NULL; | |
1060 | int match; | |
1061 | int ret = FAILED, i, err_count = 0; | |
1062 | int cnt, loopcnt; | |
1063 | unsigned int midlayer_id = 0; | |
1064 | struct lpfc_scsi_buf * lpfc_cmd = NULL; | |
1065 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
1066 | ||
1067 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); | |
1068 | if (lpfc_cmd == NULL) | |
1069 | goto out; | |
1070 | ||
1071 | /* The lpfc_cmd storage is reused. Set all loop invariants. */ | |
1072 | lpfc_cmd->timeout = 60; | |
1073 | lpfc_cmd->pCmd = cmnd; | |
1074 | lpfc_cmd->scsi_hba = phba; | |
1075 | ||
1076 | /* | |
1077 | * Since the driver manages a single bus device, reset all | |
1078 | * targets known to the driver. Should any target reset | |
1079 | * fail, this routine returns failure to the midlayer. | |
1080 | */ | |
1081 | midlayer_id = cmnd->device->id; | |
1082 | for (i = 0; i < MAX_FCP_TARGET; i++) { | |
1083 | /* Search the mapped list for this target ID */ | |
1084 | match = 0; | |
1085 | list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) { | |
1086 | if ((i == ndlp->nlp_sid) && ndlp->rport) { | |
1087 | match = 1; | |
1088 | break; | |
1089 | } | |
1090 | } | |
1091 | if (!match) | |
1092 | continue; | |
1093 | ||
1094 | lpfc_cmd->pCmd->device->id = i; | |
1095 | lpfc_cmd->pCmd->device->hostdata = ndlp->rport->dd_data; | |
1096 | ret = lpfc_scsi_tgt_reset(lpfc_cmd, phba); | |
1097 | if (ret != SUCCESS) { | |
1098 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
1099 | "%d:0713 Bus Reset on target %d failed\n", | |
1100 | phba->brd_no, i); | |
1101 | err_count++; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | cmnd->device->id = midlayer_id; | |
1106 | loopcnt = 0; | |
1107 | while((cnt = lpfc_sli_sum_iocb(phba, | |
1108 | &phba->sli.ring[phba->sli.fcp_ring], | |
1109 | 0, 0, LPFC_CTX_HOST))) { | |
1110 | spin_unlock_irq(phba->host->host_lock); | |
1111 | set_current_state(TASK_UNINTERRUPTIBLE); | |
1112 | schedule_timeout(LPFC_RESET_WAIT*HZ); | |
1113 | spin_lock_irq(phba->host->host_lock); | |
1114 | ||
1115 | if (++loopcnt | |
1116 | > (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT) | |
1117 | break; | |
1118 | } | |
1119 | ||
1120 | if (cnt) { | |
1121 | /* flush all outstanding commands on the host */ | |
1122 | i = lpfc_sli_abort_iocb(phba, | |
1123 | &phba->sli.ring[phba->sli.fcp_ring], 0, 0, 0, | |
1124 | LPFC_CTX_HOST); | |
1125 | ||
1126 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
1127 | "%d:0715 Bus Reset I/O flush failure: cnt x%x left x%x\n", | |
1128 | phba->brd_no, cnt, i); | |
1129 | } | |
1130 | ||
1131 | if (!err_count) | |
1132 | ret = SUCCESS; | |
1133 | ||
1134 | lpfc_free_scsi_buf(lpfc_cmd); | |
1135 | lpfc_printf_log(phba, | |
1136 | KERN_ERR, | |
1137 | LOG_FCP, | |
1138 | "%d:0714 SCSI layer issued Bus Reset Data: x%x\n", | |
1139 | phba->brd_no, ret); | |
1140 | out: | |
1141 | return ret; | |
1142 | } | |
1143 | ||
68b3aa7c JG |
1144 | static int |
1145 | lpfc_reset_bus_handler(struct scsi_cmnd *cmnd) | |
1146 | { | |
1147 | int rc; | |
1148 | spin_lock_irq(cmnd->device->host->host_lock); | |
1149 | rc = __lpfc_reset_bus_handler(cmnd); | |
1150 | spin_unlock_irq(cmnd->device->host->host_lock); | |
1151 | return rc; | |
1152 | } | |
1153 | ||
dea3101e | 1154 | static int |
1155 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1156 | { | |
1157 | struct lpfc_hba *phba = (struct lpfc_hba *)sdev->host->hostdata[0]; | |
1158 | struct lpfc_nodelist *ndlp = NULL; | |
1159 | int match = 0; | |
1160 | struct lpfc_scsi_buf *scsi_buf = NULL; | |
1161 | uint32_t total = 0, i; | |
1162 | uint32_t num_to_alloc = 0; | |
1163 | unsigned long flags; | |
1164 | struct list_head *listp; | |
1165 | struct list_head *node_list[6]; | |
1166 | ||
1167 | /* | |
1168 | * Store the target pointer in the scsi_device hostdata pointer provided | |
1169 | * the driver has already discovered the target id. | |
1170 | */ | |
1171 | ||
1172 | /* Search the nlp lists other than unmap_list for this target ID */ | |
1173 | node_list[0] = &phba->fc_npr_list; | |
1174 | node_list[1] = &phba->fc_nlpmap_list; | |
1175 | node_list[2] = &phba->fc_prli_list; | |
1176 | node_list[3] = &phba->fc_reglogin_list; | |
1177 | node_list[4] = &phba->fc_adisc_list; | |
1178 | node_list[5] = &phba->fc_plogi_list; | |
1179 | ||
1180 | for (i = 0; i < 6 && !match; i++) { | |
1181 | listp = node_list[i]; | |
1182 | if (list_empty(listp)) | |
1183 | continue; | |
1184 | list_for_each_entry(ndlp, listp, nlp_listp) { | |
1185 | if ((sdev->id == ndlp->nlp_sid) && ndlp->rport) { | |
1186 | match = 1; | |
1187 | break; | |
1188 | } | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | if (!match) | |
1193 | return -ENXIO; | |
1194 | ||
1195 | sdev->hostdata = ndlp->rport->dd_data; | |
1196 | ||
1197 | /* | |
1198 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1199 | * available list of scsi buffers. Don't allocate more than the | |
1200 | * HBA limit conveyed to the midlayer via the host structure. Note | |
1201 | * that this list of scsi bufs exists for the lifetime of the driver. | |
1202 | */ | |
1203 | total = phba->total_scsi_bufs; | |
1204 | num_to_alloc = LPFC_CMD_PER_LUN; | |
1205 | if (total >= phba->cfg_hba_queue_depth) { | |
1206 | printk(KERN_WARNING "%s, At config limitation of " | |
1207 | "%d allocated scsi_bufs\n", __FUNCTION__, total); | |
1208 | return 0; | |
1209 | } else if (total + num_to_alloc > phba->cfg_hba_queue_depth) { | |
1210 | num_to_alloc = phba->cfg_hba_queue_depth - total; | |
1211 | } | |
1212 | ||
1213 | for (i = 0; i < num_to_alloc; i++) { | |
1214 | scsi_buf = lpfc_get_scsi_buf(phba); | |
1215 | if (!scsi_buf) { | |
1216 | printk(KERN_ERR "%s, failed to allocate " | |
1217 | "scsi_buf\n", __FUNCTION__); | |
1218 | break; | |
1219 | } | |
1220 | ||
1221 | spin_lock_irqsave(phba->host->host_lock, flags); | |
1222 | phba->total_scsi_bufs++; | |
1223 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
1224 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
1225 | } | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | static int | |
1230 | lpfc_slave_configure(struct scsi_device *sdev) | |
1231 | { | |
1232 | struct lpfc_hba *phba = (struct lpfc_hba *) sdev->host->hostdata[0]; | |
1233 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
1234 | ||
1235 | if (sdev->tagged_supported) | |
1236 | scsi_activate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1237 | else | |
1238 | scsi_deactivate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1239 | ||
1240 | /* | |
1241 | * Initialize the fc transport attributes for the target | |
1242 | * containing this scsi device. Also note that the driver's | |
1243 | * target pointer is stored in the starget_data for the | |
1244 | * driver's sysfs entry point functions. | |
1245 | */ | |
1246 | rport->dev_loss_tmo = phba->cfg_nodev_tmo + 5; | |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
1251 | static void | |
1252 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1253 | { | |
1254 | sdev->hostdata = NULL; | |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | struct scsi_host_template lpfc_template = { | |
1259 | .module = THIS_MODULE, | |
1260 | .name = LPFC_DRIVER_NAME, | |
1261 | .info = lpfc_info, | |
1262 | .queuecommand = lpfc_queuecommand, | |
1263 | .eh_abort_handler = lpfc_abort_handler, | |
1264 | .eh_device_reset_handler= lpfc_reset_lun_handler, | |
1265 | .eh_bus_reset_handler = lpfc_reset_bus_handler, | |
1266 | .slave_alloc = lpfc_slave_alloc, | |
1267 | .slave_configure = lpfc_slave_configure, | |
1268 | .slave_destroy = lpfc_slave_destroy, | |
1269 | .this_id = -1, | |
1270 | .sg_tablesize = LPFC_SG_SEG_CNT, | |
1271 | .cmd_per_lun = LPFC_CMD_PER_LUN, | |
1272 | .use_clustering = ENABLE_CLUSTERING, | |
1273 | .shost_attrs = lpfc_host_attrs, | |
564b2960 | 1274 | .max_sectors = 0xFFFF, |
dea3101e | 1275 | }; |