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