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 | ||
dea3101e | 43 | |
44 | /* | |
45 | * This routine allocates a scsi buffer, which contains all the necessary | |
46 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
47 | * contains information to build the IOCB. The DMAable region contains | |
48 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
49 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
50 | * and the BPL BDE is setup in the IOCB. | |
51 | */ | |
52 | static struct lpfc_scsi_buf * | |
0bd4ca25 | 53 | lpfc_new_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 54 | { |
55 | struct lpfc_scsi_buf *psb; | |
56 | struct ulp_bde64 *bpl; | |
57 | IOCB_t *iocb; | |
58 | dma_addr_t pdma_phys; | |
604a3e30 | 59 | uint16_t iotag; |
dea3101e | 60 | |
61 | psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
62 | if (!psb) | |
63 | return NULL; | |
64 | memset(psb, 0, sizeof (struct lpfc_scsi_buf)); | |
65 | psb->scsi_hba = phba; | |
66 | ||
67 | /* | |
68 | * Get memory from the pci pool to map the virt space to pci bus space | |
69 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
70 | * struct fcp_rsp and the number of bde's necessary to support the | |
71 | * sg_tablesize. | |
72 | */ | |
73 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
74 | &psb->dma_handle); | |
75 | if (!psb->data) { | |
76 | kfree(psb); | |
77 | return NULL; | |
78 | } | |
79 | ||
80 | /* Initialize virtual ptrs to dma_buf region. */ | |
81 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
82 | ||
604a3e30 JB |
83 | /* Allocate iotag for psb->cur_iocbq. */ |
84 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
85 | if (iotag == 0) { | |
86 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
87 | psb->data, psb->dma_handle); | |
88 | kfree (psb); | |
89 | return NULL; | |
90 | } | |
0bd4ca25 | 91 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 92 | |
dea3101e | 93 | psb->fcp_cmnd = psb->data; |
94 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
95 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
96 | sizeof(struct fcp_rsp); | |
97 | ||
98 | /* Initialize local short-hand pointers. */ | |
99 | bpl = psb->fcp_bpl; | |
100 | pdma_phys = psb->dma_handle; | |
101 | ||
102 | /* | |
103 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
104 | * list bdes. Initialize the first two and leave the rest for | |
105 | * queuecommand. | |
106 | */ | |
107 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
108 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
109 | bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd); | |
110 | bpl->tus.f.bdeFlags = BUFF_USE_CMND; | |
111 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
112 | bpl++; | |
113 | ||
114 | /* Setup the physical region for the FCP RSP */ | |
115 | pdma_phys += sizeof (struct fcp_cmnd); | |
116 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys)); | |
117 | bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys)); | |
118 | bpl->tus.f.bdeSize = sizeof (struct fcp_rsp); | |
119 | bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV); | |
120 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
121 | ||
122 | /* | |
123 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
124 | * initialize it with all known data now. | |
125 | */ | |
126 | pdma_phys += (sizeof (struct fcp_rsp)); | |
127 | iocb = &psb->cur_iocbq.iocb; | |
128 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
129 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys); | |
130 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys); | |
131 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); | |
132 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL; | |
133 | iocb->ulpBdeCount = 1; | |
134 | iocb->ulpClass = CLASS3; | |
135 | ||
136 | return psb; | |
137 | } | |
138 | ||
0bd4ca25 JSEC |
139 | struct lpfc_scsi_buf* |
140 | lpfc_sli_get_scsi_buf(struct lpfc_hba * phba) | |
dea3101e | 141 | { |
0bd4ca25 JSEC |
142 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
143 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
144 | ||
145 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); | |
146 | return lpfc_cmd; | |
147 | } | |
dea3101e | 148 | |
0bd4ca25 JSEC |
149 | static void |
150 | lpfc_release_scsi_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
151 | { | |
dea3101e | 152 | /* |
153 | * There are only two special cases to consider. (1) the scsi command | |
154 | * requested scatter-gather usage or (2) the scsi command allocated | |
155 | * a request buffer, but did not request use_sg. There is a third | |
156 | * case, but it does not require resource deallocation. | |
157 | */ | |
158 | if ((psb->seg_cnt > 0) && (psb->pCmd->use_sg)) { | |
159 | dma_unmap_sg(&phba->pcidev->dev, psb->pCmd->request_buffer, | |
160 | psb->seg_cnt, psb->pCmd->sc_data_direction); | |
161 | } else { | |
162 | if ((psb->nonsg_phys) && (psb->pCmd->request_bufflen)) { | |
163 | dma_unmap_single(&phba->pcidev->dev, psb->nonsg_phys, | |
164 | psb->pCmd->request_bufflen, | |
165 | psb->pCmd->sc_data_direction); | |
166 | } | |
167 | } | |
168 | ||
0bd4ca25 | 169 | psb->pCmd = NULL; |
dea3101e | 170 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
171 | } | |
172 | ||
173 | static int | |
174 | lpfc_scsi_prep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd) | |
175 | { | |
176 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
177 | struct scatterlist *sgel = NULL; | |
178 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
179 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
180 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
181 | dma_addr_t physaddr; | |
182 | uint32_t i, num_bde = 0; | |
183 | int datadir = scsi_cmnd->sc_data_direction; | |
184 | int dma_error; | |
185 | ||
186 | /* | |
187 | * There are three possibilities here - use scatter-gather segment, use | |
188 | * the single mapping, or neither. Start the lpfc command prep by | |
189 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
190 | * data bde entry. | |
191 | */ | |
192 | bpl += 2; | |
193 | if (scsi_cmnd->use_sg) { | |
194 | /* | |
195 | * The driver stores the segment count returned from pci_map_sg | |
196 | * because this a count of dma-mappings used to map the use_sg | |
197 | * pages. They are not guaranteed to be the same for those | |
198 | * architectures that implement an IOMMU. | |
199 | */ | |
200 | sgel = (struct scatterlist *)scsi_cmnd->request_buffer; | |
201 | lpfc_cmd->seg_cnt = dma_map_sg(&phba->pcidev->dev, sgel, | |
202 | scsi_cmnd->use_sg, datadir); | |
203 | if (lpfc_cmd->seg_cnt == 0) | |
204 | return 1; | |
205 | ||
206 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
207 | printk(KERN_ERR "%s: Too many sg segments from " | |
208 | "dma_map_sg. Config %d, seg_cnt %d", | |
209 | __FUNCTION__, phba->cfg_sg_seg_cnt, | |
210 | lpfc_cmd->seg_cnt); | |
211 | dma_unmap_sg(&phba->pcidev->dev, sgel, | |
212 | lpfc_cmd->seg_cnt, datadir); | |
213 | return 1; | |
214 | } | |
215 | ||
216 | /* | |
217 | * The driver established a maximum scatter-gather segment count | |
218 | * during probe that limits the number of sg elements in any | |
219 | * single scsi command. Just run through the seg_cnt and format | |
220 | * the bde's. | |
221 | */ | |
222 | for (i = 0; i < lpfc_cmd->seg_cnt; i++) { | |
223 | physaddr = sg_dma_address(sgel); | |
224 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
225 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
226 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
227 | if (datadir == DMA_TO_DEVICE) | |
228 | bpl->tus.f.bdeFlags = 0; | |
229 | else | |
230 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
231 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
232 | bpl++; | |
233 | sgel++; | |
234 | num_bde++; | |
235 | } | |
236 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { | |
237 | physaddr = dma_map_single(&phba->pcidev->dev, | |
238 | scsi_cmnd->request_buffer, | |
239 | scsi_cmnd->request_bufflen, | |
240 | datadir); | |
241 | dma_error = dma_mapping_error(physaddr); | |
242 | if (dma_error) { | |
243 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
244 | "%d:0718 Unable to dma_map_single " | |
245 | "request_buffer: x%x\n", | |
246 | phba->brd_no, dma_error); | |
247 | return 1; | |
248 | } | |
249 | ||
250 | lpfc_cmd->nonsg_phys = physaddr; | |
251 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
252 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
253 | bpl->tus.f.bdeSize = scsi_cmnd->request_bufflen; | |
254 | if (datadir == DMA_TO_DEVICE) | |
255 | bpl->tus.f.bdeFlags = 0; | |
483f05f0 JSEC |
256 | else |
257 | bpl->tus.f.bdeFlags = BUFF_USE_RCV; | |
dea3101e | 258 | bpl->tus.w = le32_to_cpu(bpl->tus.w); |
259 | num_bde = 1; | |
260 | bpl++; | |
261 | } | |
262 | ||
263 | /* | |
264 | * Finish initializing those IOCB fields that are dependent on the | |
483f05f0 JSEC |
265 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly |
266 | * reinitialized since all iocb memory resources are used many times | |
267 | * for transmit, receive, and continuation bpl's. | |
dea3101e | 268 | */ |
483f05f0 | 269 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64)); |
dea3101e | 270 | iocb_cmd->un.fcpi64.bdl.bdeSize += |
271 | (num_bde * sizeof (struct ulp_bde64)); | |
272 | iocb_cmd->ulpBdeCount = 1; | |
273 | iocb_cmd->ulpLe = 1; | |
274 | fcp_cmnd->fcpDl = be32_to_cpu(scsi_cmnd->request_bufflen); | |
275 | return 0; | |
276 | } | |
277 | ||
278 | static void | |
279 | lpfc_handle_fcp_err(struct lpfc_scsi_buf *lpfc_cmd) | |
280 | { | |
281 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
282 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
283 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
284 | struct lpfc_hba *phba = lpfc_cmd->scsi_hba; | |
285 | uint32_t fcpi_parm = lpfc_cmd->cur_iocbq.iocb.un.fcpi.fcpi_parm; | |
286 | uint32_t resp_info = fcprsp->rspStatus2; | |
287 | uint32_t scsi_status = fcprsp->rspStatus3; | |
288 | uint32_t host_status = DID_OK; | |
289 | uint32_t rsplen = 0; | |
290 | ||
291 | /* | |
292 | * If this is a task management command, there is no | |
293 | * scsi packet associated with this lpfc_cmd. The driver | |
294 | * consumes it. | |
295 | */ | |
296 | if (fcpcmd->fcpCntl2) { | |
297 | scsi_status = 0; | |
298 | goto out; | |
299 | } | |
300 | ||
301 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
302 | "%d:0730 FCP command failed: RSP " | |
303 | "Data: x%x x%x x%x x%x x%x x%x\n", | |
304 | phba->brd_no, resp_info, scsi_status, | |
305 | be32_to_cpu(fcprsp->rspResId), | |
306 | be32_to_cpu(fcprsp->rspSnsLen), | |
307 | be32_to_cpu(fcprsp->rspRspLen), | |
308 | fcprsp->rspInfo3); | |
309 | ||
310 | if (resp_info & RSP_LEN_VALID) { | |
311 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
312 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
313 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
314 | host_status = DID_ERROR; | |
315 | goto out; | |
316 | } | |
317 | } | |
318 | ||
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 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
325 | } | |
326 | ||
327 | cmnd->resid = 0; | |
328 | if (resp_info & RESID_UNDER) { | |
329 | cmnd->resid = be32_to_cpu(fcprsp->rspResId); | |
330 | ||
331 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
332 | "%d:0716 FCP Read Underrun, expected %d, " | |
333 | "residual %d Data: x%x x%x x%x\n", phba->brd_no, | |
334 | be32_to_cpu(fcpcmd->fcpDl), cmnd->resid, | |
335 | fcpi_parm, cmnd->cmnd[0], cmnd->underflow); | |
336 | ||
337 | /* | |
338 | * The cmnd->underflow is the minimum number of bytes that must | |
339 | * be transfered for this command. Provided a sense condition | |
340 | * is not present, make sure the actual amount transferred is at | |
341 | * least the underflow value or fail. | |
342 | */ | |
343 | if (!(resp_info & SNS_LEN_VALID) && | |
344 | (scsi_status == SAM_STAT_GOOD) && | |
345 | (cmnd->request_bufflen - cmnd->resid) < cmnd->underflow) { | |
346 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
347 | "%d:0717 FCP command x%x residual " | |
348 | "underrun converted to error " | |
349 | "Data: x%x x%x x%x\n", phba->brd_no, | |
350 | cmnd->cmnd[0], cmnd->request_bufflen, | |
351 | cmnd->resid, cmnd->underflow); | |
352 | ||
353 | host_status = DID_ERROR; | |
354 | } | |
355 | } else if (resp_info & RESID_OVER) { | |
356 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
357 | "%d:0720 FCP command x%x residual " | |
358 | "overrun error. Data: x%x x%x \n", | |
359 | phba->brd_no, cmnd->cmnd[0], | |
360 | cmnd->request_bufflen, cmnd->resid); | |
361 | host_status = DID_ERROR; | |
362 | ||
363 | /* | |
364 | * Check SLI validation that all the transfer was actually done | |
365 | * (fcpi_parm should be zero). Apply check only to reads. | |
366 | */ | |
367 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
368 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
369 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
370 | "%d:0734 FCP Read Check Error Data: " | |
371 | "x%x x%x x%x x%x\n", phba->brd_no, | |
372 | be32_to_cpu(fcpcmd->fcpDl), | |
373 | be32_to_cpu(fcprsp->rspResId), | |
374 | fcpi_parm, cmnd->cmnd[0]); | |
375 | host_status = DID_ERROR; | |
376 | cmnd->resid = cmnd->request_bufflen; | |
377 | } | |
378 | ||
379 | out: | |
380 | cmnd->result = ScsiResult(host_status, scsi_status); | |
381 | } | |
382 | ||
383 | static void | |
384 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
385 | struct lpfc_iocbq *pIocbOut) | |
386 | { | |
387 | struct lpfc_scsi_buf *lpfc_cmd = | |
388 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
389 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
390 | struct lpfc_nodelist *pnode = rdata->pnode; | |
391 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
392 | unsigned long iflag; | |
393 | ||
394 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
395 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
396 | ||
397 | if (lpfc_cmd->status) { | |
398 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
399 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
400 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
401 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
402 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
403 | ||
404 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
405 | "%d:0729 FCP cmd x%x failed <%d/%d> status: " | |
406 | "x%x result: x%x Data: x%x x%x\n", | |
407 | phba->brd_no, cmd->cmnd[0], cmd->device->id, | |
408 | cmd->device->lun, lpfc_cmd->status, | |
409 | lpfc_cmd->result, pIocbOut->iocb.ulpContext, | |
410 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
411 | ||
412 | switch (lpfc_cmd->status) { | |
413 | case IOSTAT_FCP_RSP_ERROR: | |
414 | /* Call FCP RSP handler to determine result */ | |
415 | lpfc_handle_fcp_err(lpfc_cmd); | |
416 | break; | |
417 | case IOSTAT_NPORT_BSY: | |
418 | case IOSTAT_FABRIC_BSY: | |
419 | cmd->result = ScsiResult(DID_BUS_BUSY, 0); | |
420 | break; | |
421 | default: | |
422 | cmd->result = ScsiResult(DID_ERROR, 0); | |
423 | break; | |
424 | } | |
425 | ||
19a7b4ae JSEC |
426 | if ((pnode == NULL ) |
427 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
428 | cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY); | |
dea3101e | 429 | } else { |
430 | cmd->result = ScsiResult(DID_OK, 0); | |
431 | } | |
432 | ||
433 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
434 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
435 | ||
436 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
437 | "%d:0710 Iodone <%d/%d> cmd %p, error x%x " | |
438 | "SNS x%x x%x Data: x%x x%x\n", | |
439 | phba->brd_no, cmd->device->id, | |
440 | cmd->device->lun, cmd, cmd->result, | |
441 | *lp, *(lp + 3), cmd->retries, cmd->resid); | |
442 | } | |
443 | ||
0bd4ca25 JSEC |
444 | cmd->scsi_done(cmd); |
445 | ||
dea3101e | 446 | spin_lock_irqsave(phba->host->host_lock, iflag); |
0bd4ca25 | 447 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 448 | spin_unlock_irqrestore(phba->host->host_lock, iflag); |
dea3101e | 449 | } |
450 | ||
451 | static void | |
452 | lpfc_scsi_prep_cmnd(struct lpfc_hba * phba, struct lpfc_scsi_buf * lpfc_cmd, | |
453 | struct lpfc_nodelist *pnode) | |
454 | { | |
455 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
456 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
457 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
458 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
459 | int datadir = scsi_cmnd->sc_data_direction; | |
460 | ||
461 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; | |
69859dc4 JSEC |
462 | /* clear task management bits */ |
463 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 464 | |
91886523 JSEC |
465 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
466 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 467 | |
468 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
469 | ||
470 | if (scsi_cmnd->device->tagged_supported) { | |
471 | switch (scsi_cmnd->tag) { | |
472 | case HEAD_OF_QUEUE_TAG: | |
473 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
474 | break; | |
475 | case ORDERED_QUEUE_TAG: | |
476 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
477 | break; | |
478 | default: | |
479 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
480 | break; | |
481 | } | |
482 | } else | |
483 | fcp_cmnd->fcpCntl1 = 0; | |
484 | ||
485 | /* | |
486 | * There are three possibilities here - use scatter-gather segment, use | |
487 | * the single mapping, or neither. Start the lpfc command prep by | |
488 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
489 | * data bde entry. | |
490 | */ | |
491 | if (scsi_cmnd->use_sg) { | |
492 | if (datadir == DMA_TO_DEVICE) { | |
493 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
494 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
495 | iocb_cmd->ulpPU = 0; | |
496 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
497 | phba->fc4OutputRequests++; | |
498 | } else { | |
499 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
500 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
501 | iocb_cmd->un.fcpi.fcpi_parm = | |
502 | scsi_cmnd->request_bufflen; | |
503 | fcp_cmnd->fcpCntl3 = READ_DATA; | |
504 | phba->fc4InputRequests++; | |
505 | } | |
506 | } else if (scsi_cmnd->request_buffer && scsi_cmnd->request_bufflen) { | |
507 | if (datadir == DMA_TO_DEVICE) { | |
508 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
509 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
510 | iocb_cmd->ulpPU = 0; | |
511 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
512 | phba->fc4OutputRequests++; | |
513 | } else { | |
514 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
515 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
516 | iocb_cmd->un.fcpi.fcpi_parm = | |
517 | scsi_cmnd->request_bufflen; | |
518 | fcp_cmnd->fcpCntl3 = READ_DATA; | |
519 | phba->fc4InputRequests++; | |
520 | } | |
521 | } else { | |
522 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
523 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
524 | iocb_cmd->ulpPU = 0; | |
525 | fcp_cmnd->fcpCntl3 = 0; | |
526 | phba->fc4ControlRequests++; | |
527 | } | |
528 | ||
529 | /* | |
530 | * Finish initializing those IOCB fields that are independent | |
531 | * of the scsi_cmnd request_buffer | |
532 | */ | |
533 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
534 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
535 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
536 | ||
537 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
538 | piocbq->context1 = lpfc_cmd; | |
539 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
540 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
541 | } | |
542 | ||
543 | static int | |
544 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_hba *phba, | |
545 | struct lpfc_scsi_buf *lpfc_cmd, | |
546 | uint8_t task_mgmt_cmd) | |
547 | { | |
548 | struct lpfc_sli *psli; | |
549 | struct lpfc_iocbq *piocbq; | |
550 | IOCB_t *piocb; | |
551 | struct fcp_cmnd *fcp_cmnd; | |
552 | struct scsi_device *scsi_dev = lpfc_cmd->pCmd->device; | |
553 | struct lpfc_rport_data *rdata = scsi_dev->hostdata; | |
554 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
555 | ||
19a7b4ae | 556 | if ((ndlp == NULL) || (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { |
dea3101e | 557 | return 0; |
558 | } | |
559 | ||
560 | psli = &phba->sli; | |
561 | piocbq = &(lpfc_cmd->cur_iocbq); | |
562 | piocb = &piocbq->iocb; | |
563 | ||
564 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
91886523 JSEC |
565 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
566 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 567 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
568 | ||
569 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; | |
570 | ||
571 | piocb->ulpContext = ndlp->nlp_rpi; | |
572 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
573 | piocb->ulpFCP2Rcvy = 1; | |
574 | } | |
575 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
576 | ||
577 | /* ulpTimeout is only one byte */ | |
578 | if (lpfc_cmd->timeout > 0xff) { | |
579 | /* | |
580 | * Do not timeout the command at the firmware level. | |
581 | * The driver will provide the timeout mechanism. | |
582 | */ | |
583 | piocb->ulpTimeout = 0; | |
584 | } else { | |
585 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
586 | } | |
587 | ||
588 | lpfc_cmd->rdata = rdata; | |
589 | ||
590 | switch (task_mgmt_cmd) { | |
591 | case FCP_LUN_RESET: | |
592 | /* Issue LUN Reset to TGT <num> LUN <num> */ | |
593 | lpfc_printf_log(phba, | |
594 | KERN_INFO, | |
595 | LOG_FCP, | |
596 | "%d:0703 Issue LUN Reset to TGT %d LUN %d " | |
597 | "Data: x%x x%x\n", | |
598 | phba->brd_no, | |
599 | scsi_dev->id, scsi_dev->lun, | |
600 | ndlp->nlp_rpi, ndlp->nlp_flag); | |
601 | ||
602 | break; | |
603 | case FCP_ABORT_TASK_SET: | |
604 | /* Issue Abort Task Set to TGT <num> LUN <num> */ | |
605 | lpfc_printf_log(phba, | |
606 | KERN_INFO, | |
607 | LOG_FCP, | |
608 | "%d:0701 Issue Abort Task Set to TGT %d LUN %d " | |
609 | "Data: x%x x%x\n", | |
610 | phba->brd_no, | |
611 | scsi_dev->id, scsi_dev->lun, | |
612 | ndlp->nlp_rpi, ndlp->nlp_flag); | |
613 | ||
614 | break; | |
615 | case FCP_TARGET_RESET: | |
616 | /* Issue Target Reset to TGT <num> */ | |
617 | lpfc_printf_log(phba, | |
618 | KERN_INFO, | |
619 | LOG_FCP, | |
620 | "%d:0702 Issue Target Reset to TGT %d " | |
621 | "Data: x%x x%x\n", | |
622 | phba->brd_no, | |
623 | scsi_dev->id, ndlp->nlp_rpi, | |
624 | ndlp->nlp_flag); | |
625 | break; | |
626 | } | |
627 | ||
628 | return (1); | |
629 | } | |
630 | ||
631 | static int | |
632 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba) | |
633 | { | |
634 | struct lpfc_iocbq *iocbq; | |
0bd4ca25 | 635 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 636 | int ret; |
637 | ||
638 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_TARGET_RESET); | |
639 | if (!ret) | |
640 | return FAILED; | |
641 | ||
642 | lpfc_cmd->scsi_hba = phba; | |
643 | iocbq = &lpfc_cmd->cur_iocbq; | |
0bd4ca25 JSEC |
644 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
645 | ||
dea3101e | 646 | if (!iocbqrsp) |
647 | return FAILED; | |
dea3101e | 648 | |
68876920 JSEC |
649 | ret = lpfc_sli_issue_iocb_wait(phba, |
650 | &phba->sli.ring[phba->sli.fcp_ring], | |
651 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 652 | if (ret != IOCB_SUCCESS) { |
653 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
654 | ret = FAILED; | |
655 | } else { | |
656 | ret = SUCCESS; | |
657 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
658 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
659 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
660 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
661 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
662 | } | |
663 | ||
604a3e30 | 664 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e | 665 | return ret; |
666 | } | |
667 | ||
dea3101e | 668 | const char * |
669 | lpfc_info(struct Scsi_Host *host) | |
670 | { | |
671 | struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0]; | |
672 | int len; | |
673 | static char lpfcinfobuf[384]; | |
674 | ||
675 | memset(lpfcinfobuf,0,384); | |
676 | if (phba && phba->pcidev){ | |
677 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
678 | len = strlen(lpfcinfobuf); | |
679 | snprintf(lpfcinfobuf + len, | |
680 | 384-len, | |
681 | " on PCI bus %02x device %02x irq %d", | |
682 | phba->pcidev->bus->number, | |
683 | phba->pcidev->devfn, | |
684 | phba->pcidev->irq); | |
685 | len = strlen(lpfcinfobuf); | |
686 | if (phba->Port[0]) { | |
687 | snprintf(lpfcinfobuf + len, | |
688 | 384-len, | |
689 | " port %s", | |
690 | phba->Port); | |
691 | } | |
692 | } | |
693 | return lpfcinfobuf; | |
694 | } | |
695 | ||
696 | static int | |
697 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
698 | { | |
699 | struct lpfc_hba *phba = | |
700 | (struct lpfc_hba *) cmnd->device->host->hostdata[0]; | |
701 | struct lpfc_sli *psli = &phba->sli; | |
702 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; | |
703 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 704 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 705 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 706 | int err; |
dea3101e | 707 | |
19a7b4ae JSEC |
708 | err = fc_remote_port_chkready(rport); |
709 | if (err) { | |
710 | cmnd->result = err; | |
dea3101e | 711 | goto out_fail_command; |
712 | } | |
713 | ||
714 | /* | |
19a7b4ae JSEC |
715 | * Catch race where our node has transitioned, but the |
716 | * transport is still transitioning. | |
dea3101e | 717 | */ |
19a7b4ae JSEC |
718 | if (!ndlp) { |
719 | cmnd->result = ScsiResult(DID_BUS_BUSY, 0); | |
720 | goto out_fail_command; | |
dea3101e | 721 | } |
0bd4ca25 | 722 | lpfc_cmd = lpfc_sli_get_scsi_buf (phba); |
dea3101e | 723 | if (lpfc_cmd == NULL) { |
724 | printk(KERN_WARNING "%s: No buffer available - list empty, " | |
725 | "total count %d\n", __FUNCTION__, phba->total_scsi_bufs); | |
726 | goto out_host_busy; | |
727 | } | |
728 | ||
729 | /* | |
730 | * Store the midlayer's command structure for the completion phase | |
731 | * and complete the command initialization. | |
732 | */ | |
733 | lpfc_cmd->pCmd = cmnd; | |
734 | lpfc_cmd->rdata = rdata; | |
735 | lpfc_cmd->timeout = 0; | |
736 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
737 | cmnd->scsi_done = done; | |
738 | ||
739 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
740 | if (err) | |
741 | goto out_host_busy_free_buf; | |
742 | ||
743 | lpfc_scsi_prep_cmnd(phba, lpfc_cmd, ndlp); | |
744 | ||
745 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
746 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); | |
747 | if (err) | |
748 | goto out_host_busy_free_buf; | |
749 | return 0; | |
750 | ||
751 | out_host_busy_free_buf: | |
0bd4ca25 | 752 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 753 | cmnd->host_scribble = NULL; |
754 | out_host_busy: | |
755 | return SCSI_MLQUEUE_HOST_BUSY; | |
756 | ||
757 | out_fail_command: | |
758 | done(cmnd); | |
759 | return 0; | |
760 | } | |
761 | ||
762 | static int | |
8fa728a2 | 763 | __lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 764 | { |
765 | struct lpfc_hba *phba = | |
766 | (struct lpfc_hba *)cmnd->device->host->hostdata[0]; | |
767 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; | |
0bd4ca25 JSEC |
768 | struct lpfc_iocbq *iocb; |
769 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 770 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 771 | IOCB_t *cmd, *icmd; |
dea3101e | 772 | unsigned int loop_count = 0; |
0bd4ca25 | 773 | int ret = SUCCESS; |
dea3101e | 774 | |
dea3101e | 775 | |
0bd4ca25 JSEC |
776 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
777 | BUG_ON(!lpfc_cmd); | |
dea3101e | 778 | |
0bd4ca25 JSEC |
779 | /* |
780 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
781 | * points to a different SCSI command, then the driver has | |
782 | * already completed this command, but the midlayer did not | |
783 | * see the completion before the eh fired. Just return | |
784 | * SUCCESS. | |
785 | */ | |
786 | iocb = &lpfc_cmd->cur_iocbq; | |
787 | if (lpfc_cmd->pCmd != cmnd) | |
788 | goto out; | |
dea3101e | 789 | |
0bd4ca25 | 790 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 791 | |
0bd4ca25 JSEC |
792 | abtsiocb = lpfc_sli_get_iocbq(phba); |
793 | if (abtsiocb == NULL) { | |
794 | ret = FAILED; | |
dea3101e | 795 | goto out; |
796 | } | |
797 | ||
dea3101e | 798 | /* |
0bd4ca25 JSEC |
799 | * The scsi command can not be in txq and it is in flight because the |
800 | * pCmd is still pointig at the SCSI command we have to abort. There | |
801 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 802 | */ |
dea3101e | 803 | |
0bd4ca25 JSEC |
804 | cmd = &iocb->iocb; |
805 | icmd = &abtsiocb->iocb; | |
806 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
807 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
808 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 809 | |
0bd4ca25 JSEC |
810 | icmd->ulpLe = 1; |
811 | icmd->ulpClass = cmd->ulpClass; | |
812 | if (phba->hba_state >= LPFC_LINK_UP) | |
813 | icmd->ulpCommand = CMD_ABORT_XRI_CN; | |
814 | else | |
815 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 816 | |
0bd4ca25 JSEC |
817 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
818 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { | |
819 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
820 | ret = FAILED; | |
821 | goto out; | |
822 | } | |
dea3101e | 823 | |
0bd4ca25 JSEC |
824 | /* Wait for abort to complete */ |
825 | while (lpfc_cmd->pCmd == cmnd) | |
826 | { | |
827 | spin_unlock_irq(phba->host->host_lock); | |
828 | set_current_state(TASK_UNINTERRUPTIBLE); | |
829 | schedule_timeout(LPFC_ABORT_WAIT*HZ); | |
830 | spin_lock_irq(phba->host->host_lock); | |
831 | if (++loop_count | |
832 | > (2 * phba->cfg_nodev_tmo)/LPFC_ABORT_WAIT) | |
833 | break; | |
834 | } | |
dea3101e | 835 | |
0bd4ca25 JSEC |
836 | if (lpfc_cmd->pCmd == cmnd) { |
837 | ret = FAILED; | |
838 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
839 | "%d:0748 abort handler timed out waiting for " | |
840 | "abort to complete: ret %#x, ID %d, LUN %d, " | |
841 | "snum %#lx\n", | |
842 | phba->brd_no, ret, cmnd->device->id, | |
843 | cmnd->device->lun, cmnd->serial_number); | |
dea3101e | 844 | } |
845 | ||
846 | out: | |
847 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, | |
0bd4ca25 JSEC |
848 | "%d:0749 SCSI layer issued abort device: ret %#x, " |
849 | "ID %d, LUN %d, snum %#lx\n", | |
850 | phba->brd_no, ret, cmnd->device->id, | |
851 | cmnd->device->lun, cmnd->serial_number); | |
dea3101e | 852 | |
0bd4ca25 | 853 | return ret; |
dea3101e | 854 | } |
855 | ||
8fa728a2 JG |
856 | static int |
857 | lpfc_abort_handler(struct scsi_cmnd *cmnd) | |
858 | { | |
859 | int rc; | |
860 | spin_lock_irq(cmnd->device->host->host_lock); | |
861 | rc = __lpfc_abort_handler(cmnd); | |
862 | spin_unlock_irq(cmnd->device->host->host_lock); | |
863 | return rc; | |
864 | } | |
865 | ||
dea3101e | 866 | static int |
94d0e7b8 | 867 | __lpfc_reset_lun_handler(struct scsi_cmnd *cmnd) |
dea3101e | 868 | { |
869 | struct Scsi_Host *shost = cmnd->device->host; | |
870 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; | |
0bd4ca25 JSEC |
871 | struct lpfc_scsi_buf *lpfc_cmd; |
872 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e | 873 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
874 | struct lpfc_nodelist *pnode = rdata->pnode; | |
875 | int ret = FAILED; | |
876 | int cnt, loopcnt; | |
877 | ||
878 | /* | |
879 | * If target is not in a MAPPED state, delay the reset until | |
880 | * target is rediscovered or nodev timeout expires. | |
881 | */ | |
882 | while ( 1 ) { | |
883 | if (!pnode) | |
884 | break; | |
885 | ||
886 | if (pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
887 | spin_unlock_irq(phba->host->host_lock); | |
888 | set_current_state(TASK_UNINTERRUPTIBLE); | |
889 | schedule_timeout( HZ/2); | |
890 | spin_lock_irq(phba->host->host_lock); | |
891 | } | |
892 | if ((pnode) && (pnode->nlp_state == NLP_STE_MAPPED_NODE)) | |
893 | break; | |
894 | } | |
895 | ||
0bd4ca25 | 896 | lpfc_cmd = lpfc_sli_get_scsi_buf (phba); |
dea3101e | 897 | if (lpfc_cmd == NULL) |
898 | goto out; | |
899 | ||
900 | lpfc_cmd->pCmd = cmnd; | |
901 | lpfc_cmd->timeout = 60; | |
902 | lpfc_cmd->scsi_hba = phba; | |
903 | ||
904 | ret = lpfc_scsi_prep_task_mgmt_cmd(phba, lpfc_cmd, FCP_LUN_RESET); | |
905 | if (!ret) | |
906 | goto out_free_scsi_buf; | |
907 | ||
908 | iocbq = &lpfc_cmd->cur_iocbq; | |
909 | ||
910 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 911 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
dea3101e | 912 | if (iocbqrsp == NULL) |
913 | goto out_free_scsi_buf; | |
914 | ||
68876920 JSEC |
915 | ret = lpfc_sli_issue_iocb_wait(phba, |
916 | &phba->sli.ring[phba->sli.fcp_ring], | |
917 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
dea3101e | 918 | if (ret == IOCB_SUCCESS) |
919 | ret = SUCCESS; | |
920 | ||
921 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
922 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
923 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT) | |
924 | if (lpfc_cmd->result & IOERR_DRVR_MASK) | |
925 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
926 | ||
927 | /* | |
928 | * All outstanding txcmplq I/Os should have been aborted by the target. | |
929 | * Unfortunately, some targets do not abide by this forcing the driver | |
930 | * to double check. | |
931 | */ | |
932 | lpfc_sli_abort_iocb(phba, &phba->sli.ring[phba->sli.fcp_ring], | |
933 | cmnd->device->id, cmnd->device->lun, 0, | |
934 | LPFC_CTX_LUN); | |
935 | ||
936 | loopcnt = 0; | |
937 | while((cnt = lpfc_sli_sum_iocb(phba, | |
938 | &phba->sli.ring[phba->sli.fcp_ring], | |
939 | cmnd->device->id, cmnd->device->lun, | |
940 | LPFC_CTX_LUN))) { | |
941 | spin_unlock_irq(phba->host->host_lock); | |
942 | set_current_state(TASK_UNINTERRUPTIBLE); | |
943 | schedule_timeout(LPFC_RESET_WAIT*HZ); | |
944 | spin_lock_irq(phba->host->host_lock); | |
945 | ||
946 | if (++loopcnt | |
947 | > (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT) | |
948 | break; | |
949 | } | |
950 | ||
951 | if (cnt) { | |
0bd4ca25 | 952 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
dea3101e | 953 | "%d:0719 LUN Reset I/O flush failure: cnt x%x\n", |
954 | phba->brd_no, cnt); | |
0bd4ca25 | 955 | ret = FAILED; |
dea3101e | 956 | } |
957 | ||
604a3e30 | 958 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e | 959 | |
960 | out_free_scsi_buf: | |
961 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
962 | "%d:0713 SCSI layer issued LUN reset (%d, %d) " | |
963 | "Data: x%x x%x x%x\n", | |
964 | phba->brd_no, lpfc_cmd->pCmd->device->id, | |
965 | lpfc_cmd->pCmd->device->lun, ret, lpfc_cmd->status, | |
966 | lpfc_cmd->result); | |
0bd4ca25 | 967 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 968 | out: |
969 | return ret; | |
970 | } | |
971 | ||
94d0e7b8 JG |
972 | static int |
973 | lpfc_reset_lun_handler(struct scsi_cmnd *cmnd) | |
974 | { | |
975 | int rc; | |
976 | spin_lock_irq(cmnd->device->host->host_lock); | |
977 | rc = __lpfc_reset_lun_handler(cmnd); | |
978 | spin_unlock_irq(cmnd->device->host->host_lock); | |
979 | return rc; | |
980 | } | |
981 | ||
dea3101e | 982 | /* |
983 | * Note: midlayer calls this function with the host_lock held | |
984 | */ | |
985 | static int | |
68b3aa7c | 986 | __lpfc_reset_bus_handler(struct scsi_cmnd *cmnd) |
dea3101e | 987 | { |
988 | struct Scsi_Host *shost = cmnd->device->host; | |
989 | struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0]; | |
990 | struct lpfc_nodelist *ndlp = NULL; | |
991 | int match; | |
992 | int ret = FAILED, i, err_count = 0; | |
993 | int cnt, loopcnt; | |
994 | unsigned int midlayer_id = 0; | |
0bd4ca25 | 995 | struct lpfc_scsi_buf * lpfc_cmd; |
dea3101e | 996 | |
0bd4ca25 | 997 | lpfc_cmd = lpfc_sli_get_scsi_buf (phba); |
dea3101e | 998 | if (lpfc_cmd == NULL) |
999 | goto out; | |
1000 | ||
1001 | /* The lpfc_cmd storage is reused. Set all loop invariants. */ | |
1002 | lpfc_cmd->timeout = 60; | |
1003 | lpfc_cmd->pCmd = cmnd; | |
1004 | lpfc_cmd->scsi_hba = phba; | |
1005 | ||
1006 | /* | |
1007 | * Since the driver manages a single bus device, reset all | |
1008 | * targets known to the driver. Should any target reset | |
1009 | * fail, this routine returns failure to the midlayer. | |
1010 | */ | |
1011 | midlayer_id = cmnd->device->id; | |
1012 | for (i = 0; i < MAX_FCP_TARGET; i++) { | |
1013 | /* Search the mapped list for this target ID */ | |
1014 | match = 0; | |
1015 | list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) { | |
1016 | if ((i == ndlp->nlp_sid) && ndlp->rport) { | |
1017 | match = 1; | |
1018 | break; | |
1019 | } | |
1020 | } | |
1021 | if (!match) | |
1022 | continue; | |
1023 | ||
1024 | lpfc_cmd->pCmd->device->id = i; | |
1025 | lpfc_cmd->pCmd->device->hostdata = ndlp->rport->dd_data; | |
1026 | ret = lpfc_scsi_tgt_reset(lpfc_cmd, phba); | |
1027 | if (ret != SUCCESS) { | |
1028 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
1029 | "%d:0713 Bus Reset on target %d failed\n", | |
1030 | phba->brd_no, i); | |
1031 | err_count++; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | cmnd->device->id = midlayer_id; | |
1036 | loopcnt = 0; | |
1037 | while((cnt = lpfc_sli_sum_iocb(phba, | |
1038 | &phba->sli.ring[phba->sli.fcp_ring], | |
1039 | 0, 0, LPFC_CTX_HOST))) { | |
1040 | spin_unlock_irq(phba->host->host_lock); | |
1041 | set_current_state(TASK_UNINTERRUPTIBLE); | |
1042 | schedule_timeout(LPFC_RESET_WAIT*HZ); | |
1043 | spin_lock_irq(phba->host->host_lock); | |
1044 | ||
1045 | if (++loopcnt | |
1046 | > (2 * phba->cfg_nodev_tmo)/LPFC_RESET_WAIT) | |
1047 | break; | |
1048 | } | |
1049 | ||
1050 | if (cnt) { | |
1051 | /* flush all outstanding commands on the host */ | |
1052 | i = lpfc_sli_abort_iocb(phba, | |
1053 | &phba->sli.ring[phba->sli.fcp_ring], 0, 0, 0, | |
1054 | LPFC_CTX_HOST); | |
1055 | ||
1056 | lpfc_printf_log(phba, KERN_INFO, LOG_FCP, | |
1057 | "%d:0715 Bus Reset I/O flush failure: cnt x%x left x%x\n", | |
1058 | phba->brd_no, cnt, i); | |
1059 | } | |
1060 | ||
0bd4ca25 | 1061 | if (cnt == 0) |
dea3101e | 1062 | ret = SUCCESS; |
0bd4ca25 JSEC |
1063 | else |
1064 | ret = FAILED; | |
dea3101e | 1065 | |
0bd4ca25 | 1066 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 1067 | lpfc_printf_log(phba, |
1068 | KERN_ERR, | |
1069 | LOG_FCP, | |
1070 | "%d:0714 SCSI layer issued Bus Reset Data: x%x\n", | |
1071 | phba->brd_no, ret); | |
1072 | out: | |
1073 | return ret; | |
1074 | } | |
1075 | ||
68b3aa7c JG |
1076 | static int |
1077 | lpfc_reset_bus_handler(struct scsi_cmnd *cmnd) | |
1078 | { | |
1079 | int rc; | |
1080 | spin_lock_irq(cmnd->device->host->host_lock); | |
1081 | rc = __lpfc_reset_bus_handler(cmnd); | |
1082 | spin_unlock_irq(cmnd->device->host->host_lock); | |
1083 | return rc; | |
1084 | } | |
1085 | ||
dea3101e | 1086 | static int |
1087 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1088 | { | |
1089 | struct lpfc_hba *phba = (struct lpfc_hba *)sdev->host->hostdata[0]; | |
dea3101e | 1090 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1091 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e | 1092 | uint32_t total = 0, i; |
1093 | uint32_t num_to_alloc = 0; | |
1094 | unsigned long flags; | |
dea3101e | 1095 | |
19a7b4ae | 1096 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 1097 | return -ENXIO; |
1098 | ||
19a7b4ae | 1099 | sdev->hostdata = rport->dd_data; |
dea3101e | 1100 | |
1101 | /* | |
1102 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1103 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1104 | * HBA limit conveyed to the midlayer via the host structure. The |
1105 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1106 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 1107 | */ |
1108 | total = phba->total_scsi_bufs; | |
a784efbf | 1109 | num_to_alloc = phba->cfg_lun_queue_depth + 2; |
dea3101e | 1110 | if (total >= phba->cfg_hba_queue_depth) { |
a784efbf JSEC |
1111 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
1112 | "%d:0704 At limitation of %d preallocated " | |
1113 | "command buffers\n", phba->brd_no, total); | |
dea3101e | 1114 | return 0; |
1115 | } else if (total + num_to_alloc > phba->cfg_hba_queue_depth) { | |
a784efbf JSEC |
1116 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP, |
1117 | "%d:0705 Allocation request of %d command " | |
1118 | "buffers will exceed max of %d. Reducing " | |
1119 | "allocation request to %d.\n", phba->brd_no, | |
1120 | num_to_alloc, phba->cfg_hba_queue_depth, | |
1121 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 1122 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
1123 | } | |
1124 | ||
1125 | for (i = 0; i < num_to_alloc; i++) { | |
0bd4ca25 | 1126 | scsi_buf = lpfc_new_scsi_buf(phba); |
dea3101e | 1127 | if (!scsi_buf) { |
a784efbf JSEC |
1128 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
1129 | "%d:0706 Failed to allocate command " | |
1130 | "buffer\n", phba->brd_no); | |
dea3101e | 1131 | break; |
1132 | } | |
1133 | ||
1134 | spin_lock_irqsave(phba->host->host_lock, flags); | |
1135 | phba->total_scsi_bufs++; | |
1136 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
1137 | spin_unlock_irqrestore(phba->host->host_lock, flags); | |
1138 | } | |
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | static int | |
1143 | lpfc_slave_configure(struct scsi_device *sdev) | |
1144 | { | |
1145 | struct lpfc_hba *phba = (struct lpfc_hba *) sdev->host->hostdata[0]; | |
1146 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
1147 | ||
1148 | if (sdev->tagged_supported) | |
1149 | scsi_activate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1150 | else | |
1151 | scsi_deactivate_tcq(sdev, phba->cfg_lun_queue_depth); | |
1152 | ||
1153 | /* | |
1154 | * Initialize the fc transport attributes for the target | |
1155 | * containing this scsi device. Also note that the driver's | |
1156 | * target pointer is stored in the starget_data for the | |
1157 | * driver's sysfs entry point functions. | |
1158 | */ | |
1159 | rport->dev_loss_tmo = phba->cfg_nodev_tmo + 5; | |
1160 | ||
1161 | return 0; | |
1162 | } | |
1163 | ||
1164 | static void | |
1165 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1166 | { | |
1167 | sdev->hostdata = NULL; | |
1168 | return; | |
1169 | } | |
1170 | ||
1171 | struct scsi_host_template lpfc_template = { | |
1172 | .module = THIS_MODULE, | |
1173 | .name = LPFC_DRIVER_NAME, | |
1174 | .info = lpfc_info, | |
1175 | .queuecommand = lpfc_queuecommand, | |
1176 | .eh_abort_handler = lpfc_abort_handler, | |
1177 | .eh_device_reset_handler= lpfc_reset_lun_handler, | |
1178 | .eh_bus_reset_handler = lpfc_reset_bus_handler, | |
1179 | .slave_alloc = lpfc_slave_alloc, | |
1180 | .slave_configure = lpfc_slave_configure, | |
1181 | .slave_destroy = lpfc_slave_destroy, | |
1182 | .this_id = -1, | |
1183 | .sg_tablesize = LPFC_SG_SEG_CNT, | |
1184 | .cmd_per_lun = LPFC_CMD_PER_LUN, | |
1185 | .use_clustering = ENABLE_CLUSTERING, | |
1186 | .shost_attrs = lpfc_host_attrs, | |
564b2960 | 1187 | .max_sectors = 0xFFFF, |
dea3101e | 1188 | }; |