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