blob: 6df8bc003a88eb73630662f64ffcb9240569d78d [file] [log] [blame]
dea31012005-04-17 16:05:31 -05001/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
James.Smart@Emulex.Comc44ce172005-06-25 10:34:39 -04003 * Fibre Channel Host Bus Adapters. *
James Smarte47c9092008-02-08 18:49:26 -05004 * Copyright (C) 2004-2008 Emulex. All rights reserved. *
James.Smart@Emulex.Comc44ce172005-06-25 10:34:39 -04005 * EMULEX and SLI are trademarks of Emulex. *
dea31012005-04-17 16:05:31 -05006 * www.emulex.com *
James.Smart@Emulex.Comc44ce172005-06-25 10:34:39 -04007 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
dea31012005-04-17 16:05:31 -05008 * *
9 * This program is free software; you can redistribute it and/or *
James.Smart@Emulex.Comc44ce172005-06-25 10:34:39 -040010 * 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. *
dea31012005-04-17 16:05:31 -050020 *******************************************************************/
21
dea31012005-04-17 16:05:31 -050022#include <linux/pci.h>
23#include <linux/interrupt.h>
James Smarta90f5682006-08-17 11:58:04 -040024#include <linux/delay.h>
dea31012005-04-17 16:05:31 -050025
26#include <scsi/scsi.h>
27#include <scsi/scsi_device.h>
28#include <scsi/scsi_host.h>
29#include <scsi/scsi_tcq.h>
30#include <scsi/scsi_transport_fc.h>
31
32#include "lpfc_version.h"
33#include "lpfc_hw.h"
34#include "lpfc_sli.h"
35#include "lpfc_disc.h"
36#include "lpfc_scsi.h"
37#include "lpfc.h"
38#include "lpfc_logmsg.h"
39#include "lpfc_crtn.h"
James Smart92d7f7b2007-06-17 19:56:38 -050040#include "lpfc_vport.h"
dea31012005-04-17 16:05:31 -050041
42#define LPFC_RESET_WAIT 2
43#define LPFC_ABORT_WAIT 2
44
dea31012005-04-17 16:05:31 -050045/*
James Smart92d7f7b2007-06-17 19:56:38 -050046 * This function is called with no lock held when there is a resource
47 * error in driver or in firmware.
48 */
49void
50lpfc_adjust_queue_depth(struct lpfc_hba *phba)
51{
52 unsigned long flags;
53
54 spin_lock_irqsave(&phba->hbalock, flags);
55 atomic_inc(&phba->num_rsrc_err);
56 phba->last_rsrc_error_time = jiffies;
57
58 if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) {
59 spin_unlock_irqrestore(&phba->hbalock, flags);
60 return;
61 }
62
63 phba->last_ramp_down_time = jiffies;
64
65 spin_unlock_irqrestore(&phba->hbalock, flags);
66
67 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
68 if ((phba->pport->work_port_events &
69 WORKER_RAMP_DOWN_QUEUE) == 0) {
70 phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE;
71 }
72 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
73
74 spin_lock_irqsave(&phba->hbalock, flags);
75 if (phba->work_wait)
76 wake_up(phba->work_wait);
77 spin_unlock_irqrestore(&phba->hbalock, flags);
78
79 return;
80}
81
82/*
83 * This function is called with no lock held when there is a successful
84 * SCSI command completion.
85 */
86static inline void
James Smart3de2a652007-08-02 11:09:59 -040087lpfc_rampup_queue_depth(struct lpfc_vport *vport,
James Smart92d7f7b2007-06-17 19:56:38 -050088 struct scsi_device *sdev)
89{
90 unsigned long flags;
James Smart3de2a652007-08-02 11:09:59 -040091 struct lpfc_hba *phba = vport->phba;
James Smart92d7f7b2007-06-17 19:56:38 -050092 atomic_inc(&phba->num_cmd_success);
93
James Smart3de2a652007-08-02 11:09:59 -040094 if (vport->cfg_lun_queue_depth <= sdev->queue_depth)
James Smart92d7f7b2007-06-17 19:56:38 -050095 return;
James Smart92d7f7b2007-06-17 19:56:38 -050096 spin_lock_irqsave(&phba->hbalock, flags);
97 if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) ||
98 ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) {
99 spin_unlock_irqrestore(&phba->hbalock, flags);
100 return;
101 }
James Smart92d7f7b2007-06-17 19:56:38 -0500102 phba->last_ramp_up_time = jiffies;
103 spin_unlock_irqrestore(&phba->hbalock, flags);
104
105 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
106 if ((phba->pport->work_port_events &
107 WORKER_RAMP_UP_QUEUE) == 0) {
108 phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE;
109 }
110 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
111
112 spin_lock_irqsave(&phba->hbalock, flags);
113 if (phba->work_wait)
114 wake_up(phba->work_wait);
115 spin_unlock_irqrestore(&phba->hbalock, flags);
116}
117
118void
119lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
120{
James Smart549e55c2007-08-02 11:09:51 -0400121 struct lpfc_vport **vports;
122 struct Scsi_Host *shost;
James Smart92d7f7b2007-06-17 19:56:38 -0500123 struct scsi_device *sdev;
124 unsigned long new_queue_depth;
125 unsigned long num_rsrc_err, num_cmd_success;
James Smart549e55c2007-08-02 11:09:51 -0400126 int i;
James Smart92d7f7b2007-06-17 19:56:38 -0500127
128 num_rsrc_err = atomic_read(&phba->num_rsrc_err);
129 num_cmd_success = atomic_read(&phba->num_cmd_success);
130
James Smart549e55c2007-08-02 11:09:51 -0400131 vports = lpfc_create_vport_work_array(phba);
132 if (vports != NULL)
James Smart09372822008-01-11 01:52:54 -0500133 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
James Smart549e55c2007-08-02 11:09:51 -0400134 shost = lpfc_shost_from_vport(vports[i]);
135 shost_for_each_device(sdev, shost) {
James Smart92d7f7b2007-06-17 19:56:38 -0500136 new_queue_depth =
James Smart549e55c2007-08-02 11:09:51 -0400137 sdev->queue_depth * num_rsrc_err /
138 (num_rsrc_err + num_cmd_success);
139 if (!new_queue_depth)
140 new_queue_depth = sdev->queue_depth - 1;
141 else
142 new_queue_depth = sdev->queue_depth -
143 new_queue_depth;
144 if (sdev->ordered_tags)
145 scsi_adjust_queue_depth(sdev,
146 MSG_ORDERED_TAG,
147 new_queue_depth);
148 else
149 scsi_adjust_queue_depth(sdev,
150 MSG_SIMPLE_TAG,
151 new_queue_depth);
152 }
James Smart92d7f7b2007-06-17 19:56:38 -0500153 }
James Smart09372822008-01-11 01:52:54 -0500154 lpfc_destroy_vport_work_array(phba, vports);
James Smart92d7f7b2007-06-17 19:56:38 -0500155 atomic_set(&phba->num_rsrc_err, 0);
156 atomic_set(&phba->num_cmd_success, 0);
157}
158
159void
160lpfc_ramp_up_queue_handler(struct lpfc_hba *phba)
161{
James Smart549e55c2007-08-02 11:09:51 -0400162 struct lpfc_vport **vports;
163 struct Scsi_Host *shost;
James Smart92d7f7b2007-06-17 19:56:38 -0500164 struct scsi_device *sdev;
James Smart549e55c2007-08-02 11:09:51 -0400165 int i;
James Smart92d7f7b2007-06-17 19:56:38 -0500166
James Smart549e55c2007-08-02 11:09:51 -0400167 vports = lpfc_create_vport_work_array(phba);
168 if (vports != NULL)
James Smart09372822008-01-11 01:52:54 -0500169 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
James Smart549e55c2007-08-02 11:09:51 -0400170 shost = lpfc_shost_from_vport(vports[i]);
171 shost_for_each_device(sdev, shost) {
172 if (sdev->ordered_tags)
173 scsi_adjust_queue_depth(sdev,
174 MSG_ORDERED_TAG,
175 sdev->queue_depth+1);
176 else
177 scsi_adjust_queue_depth(sdev,
178 MSG_SIMPLE_TAG,
179 sdev->queue_depth+1);
180 }
James Smart92d7f7b2007-06-17 19:56:38 -0500181 }
James Smart09372822008-01-11 01:52:54 -0500182 lpfc_destroy_vport_work_array(phba, vports);
James Smart92d7f7b2007-06-17 19:56:38 -0500183 atomic_set(&phba->num_rsrc_err, 0);
184 atomic_set(&phba->num_cmd_success, 0);
185}
186
187/*
dea31012005-04-17 16:05:31 -0500188 * This routine allocates a scsi buffer, which contains all the necessary
189 * information needed to initiate a SCSI I/O. The non-DMAable buffer region
190 * contains information to build the IOCB. The DMAable region contains
191 * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to
192 * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL
193 * and the BPL BDE is setup in the IOCB.
194 */
195static struct lpfc_scsi_buf *
James Smart2e0fef82007-06-17 19:56:36 -0500196lpfc_new_scsi_buf(struct lpfc_vport *vport)
dea31012005-04-17 16:05:31 -0500197{
James Smart2e0fef82007-06-17 19:56:36 -0500198 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -0500199 struct lpfc_scsi_buf *psb;
200 struct ulp_bde64 *bpl;
201 IOCB_t *iocb;
202 dma_addr_t pdma_phys;
James Bottomley604a3e32005-10-29 10:28:33 -0500203 uint16_t iotag;
dea31012005-04-17 16:05:31 -0500204
Mariusz Kozlowskibbfbbbc2007-08-11 10:13:24 +0200205 psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
dea31012005-04-17 16:05:31 -0500206 if (!psb)
207 return NULL;
dea31012005-04-17 16:05:31 -0500208
209 /*
210 * Get memory from the pci pool to map the virt space to pci bus space
211 * for an I/O. The DMA buffer includes space for the struct fcp_cmnd,
212 * struct fcp_rsp and the number of bde's necessary to support the
213 * sg_tablesize.
214 */
215 psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL,
216 &psb->dma_handle);
217 if (!psb->data) {
218 kfree(psb);
219 return NULL;
220 }
221
222 /* Initialize virtual ptrs to dma_buf region. */
223 memset(psb->data, 0, phba->cfg_sg_dma_buf_size);
224
James Bottomley604a3e32005-10-29 10:28:33 -0500225 /* Allocate iotag for psb->cur_iocbq. */
226 iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq);
227 if (iotag == 0) {
228 pci_pool_free(phba->lpfc_scsi_dma_buf_pool,
229 psb->data, psb->dma_handle);
230 kfree (psb);
231 return NULL;
232 }
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400233 psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP;
James Bottomley604a3e32005-10-29 10:28:33 -0500234
dea31012005-04-17 16:05:31 -0500235 psb->fcp_cmnd = psb->data;
236 psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd);
237 psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) +
238 sizeof(struct fcp_rsp);
239
240 /* Initialize local short-hand pointers. */
241 bpl = psb->fcp_bpl;
242 pdma_phys = psb->dma_handle;
243
244 /*
245 * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg
246 * list bdes. Initialize the first two and leave the rest for
247 * queuecommand.
248 */
249 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys));
250 bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys));
251 bpl->tus.f.bdeSize = sizeof (struct fcp_cmnd);
252 bpl->tus.f.bdeFlags = BUFF_USE_CMND;
253 bpl->tus.w = le32_to_cpu(bpl->tus.w);
254 bpl++;
255
256 /* Setup the physical region for the FCP RSP */
257 pdma_phys += sizeof (struct fcp_cmnd);
258 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys));
259 bpl->addrLow = le32_to_cpu(putPaddrLow(pdma_phys));
260 bpl->tus.f.bdeSize = sizeof (struct fcp_rsp);
261 bpl->tus.f.bdeFlags = (BUFF_USE_CMND | BUFF_USE_RCV);
262 bpl->tus.w = le32_to_cpu(bpl->tus.w);
263
264 /*
265 * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf,
266 * initialize it with all known data now.
267 */
268 pdma_phys += (sizeof (struct fcp_rsp));
269 iocb = &psb->cur_iocbq.iocb;
270 iocb->un.fcpi64.bdl.ulpIoTag32 = 0;
271 iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys);
272 iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys);
273 iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
274 iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDL;
275 iocb->ulpBdeCount = 1;
276 iocb->ulpClass = CLASS3;
277
278 return psb;
279}
280
Adrian Bunk455c53e2006-01-06 20:21:28 +0100281static struct lpfc_scsi_buf*
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500282lpfc_get_scsi_buf(struct lpfc_hba * phba)
dea31012005-04-17 16:05:31 -0500283{
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400284 struct lpfc_scsi_buf * lpfc_cmd = NULL;
285 struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500286 unsigned long iflag = 0;
dea31012005-04-17 16:05:31 -0500287
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500288 spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400289 list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list);
James Smart1dcb58e2007-04-25 09:51:30 -0400290 if (lpfc_cmd) {
291 lpfc_cmd->seg_cnt = 0;
292 lpfc_cmd->nonsg_phys = 0;
293 }
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500294 spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400295 return lpfc_cmd;
296}
297
298static void
James Smart92d7f7b2007-06-17 19:56:38 -0500299lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb)
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400300{
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500301 unsigned long iflag = 0;
dea31012005-04-17 16:05:31 -0500302
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500303 spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400304 psb->pCmd = NULL;
dea31012005-04-17 16:05:31 -0500305 list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list);
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500306 spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
dea31012005-04-17 16:05:31 -0500307}
308
309static int
James Smart92d7f7b2007-06-17 19:56:38 -0500310lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
dea31012005-04-17 16:05:31 -0500311{
312 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
313 struct scatterlist *sgel = NULL;
314 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
315 struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl;
316 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
317 dma_addr_t physaddr;
318 uint32_t i, num_bde = 0;
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500319 int nseg, datadir = scsi_cmnd->sc_data_direction;
dea31012005-04-17 16:05:31 -0500320
321 /*
322 * There are three possibilities here - use scatter-gather segment, use
323 * the single mapping, or neither. Start the lpfc command prep by
324 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
325 * data bde entry.
326 */
327 bpl += 2;
FUJITA Tomonoric59fd9e2007-07-04 06:03:11 -0700328 if (scsi_sg_count(scsi_cmnd)) {
dea31012005-04-17 16:05:31 -0500329 /*
330 * The driver stores the segment count returned from pci_map_sg
331 * because this a count of dma-mappings used to map the use_sg
332 * pages. They are not guaranteed to be the same for those
333 * architectures that implement an IOMMU.
334 */
dea31012005-04-17 16:05:31 -0500335
FUJITA Tomonoric59fd9e2007-07-04 06:03:11 -0700336 nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
337 scsi_sg_count(scsi_cmnd), datadir);
338 if (unlikely(!nseg))
339 return 1;
340
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500341 lpfc_cmd->seg_cnt = nseg;
dea31012005-04-17 16:05:31 -0500342 if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
343 printk(KERN_ERR "%s: Too many sg segments from "
344 "dma_map_sg. Config %d, seg_cnt %d",
345 __FUNCTION__, phba->cfg_sg_seg_cnt,
346 lpfc_cmd->seg_cnt);
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500347 scsi_dma_unmap(scsi_cmnd);
dea31012005-04-17 16:05:31 -0500348 return 1;
349 }
350
351 /*
352 * The driver established a maximum scatter-gather segment count
353 * during probe that limits the number of sg elements in any
354 * single scsi command. Just run through the seg_cnt and format
355 * the bde's.
356 */
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500357 scsi_for_each_sg(scsi_cmnd, sgel, nseg, i) {
dea31012005-04-17 16:05:31 -0500358 physaddr = sg_dma_address(sgel);
359 bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr));
360 bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
361 bpl->tus.f.bdeSize = sg_dma_len(sgel);
362 if (datadir == DMA_TO_DEVICE)
363 bpl->tus.f.bdeFlags = 0;
364 else
365 bpl->tus.f.bdeFlags = BUFF_USE_RCV;
366 bpl->tus.w = le32_to_cpu(bpl->tus.w);
367 bpl++;
dea31012005-04-17 16:05:31 -0500368 num_bde++;
369 }
FUJITA Tomonoric59fd9e2007-07-04 06:03:11 -0700370 }
dea31012005-04-17 16:05:31 -0500371
372 /*
373 * Finish initializing those IOCB fields that are dependent on the
James.Smart@Emulex.Com483f05f2005-08-10 15:02:45 -0400374 * scsi_cmnd request_buffer. Note that the bdeSize is explicitly
375 * reinitialized since all iocb memory resources are used many times
376 * for transmit, receive, and continuation bpl's.
dea31012005-04-17 16:05:31 -0500377 */
James.Smart@Emulex.Com483f05f2005-08-10 15:02:45 -0400378 iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof (struct ulp_bde64));
dea31012005-04-17 16:05:31 -0500379 iocb_cmd->un.fcpi64.bdl.bdeSize +=
380 (num_bde * sizeof (struct ulp_bde64));
381 iocb_cmd->ulpBdeCount = 1;
382 iocb_cmd->ulpLe = 1;
James Smart09372822008-01-11 01:52:54 -0500383 fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd));
dea31012005-04-17 16:05:31 -0500384 return 0;
385}
386
387static void
James Smartbcf4dbf2006-07-06 15:50:08 -0400388lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb)
389{
390 /*
391 * There are only two special cases to consider. (1) the scsi command
392 * requested scatter-gather usage or (2) the scsi command allocated
393 * a request buffer, but did not request use_sg. There is a third
394 * case, but it does not require resource deallocation.
395 */
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500396 if (psb->seg_cnt > 0)
397 scsi_dma_unmap(psb->pCmd);
James Smartbcf4dbf2006-07-06 15:50:08 -0400398}
399
400static void
James Smart2e0fef82007-06-17 19:56:36 -0500401lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
402 struct lpfc_iocbq *rsp_iocb)
dea31012005-04-17 16:05:31 -0500403{
404 struct scsi_cmnd *cmnd = lpfc_cmd->pCmd;
405 struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd;
406 struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp;
James Smart7054a602007-04-25 09:52:34 -0400407 uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm;
dea31012005-04-17 16:05:31 -0500408 uint32_t resp_info = fcprsp->rspStatus2;
409 uint32_t scsi_status = fcprsp->rspStatus3;
James Smartc7743952006-12-02 13:34:42 -0500410 uint32_t *lp;
dea31012005-04-17 16:05:31 -0500411 uint32_t host_status = DID_OK;
412 uint32_t rsplen = 0;
James Smartc7743952006-12-02 13:34:42 -0500413 uint32_t logit = LOG_FCP | LOG_FCP_ERROR;
dea31012005-04-17 16:05:31 -0500414
415 /*
416 * If this is a task management command, there is no
417 * scsi packet associated with this lpfc_cmd. The driver
418 * consumes it.
419 */
420 if (fcpcmd->fcpCntl2) {
421 scsi_status = 0;
422 goto out;
423 }
424
James Smartc7743952006-12-02 13:34:42 -0500425 if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) {
426 uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen);
427 if (snslen > SCSI_SENSE_BUFFERSIZE)
428 snslen = SCSI_SENSE_BUFFERSIZE;
429
430 if (resp_info & RSP_LEN_VALID)
431 rsplen = be32_to_cpu(fcprsp->rspRspLen);
432 memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen);
433 }
434 lp = (uint32_t *)cmnd->sense_buffer;
435
436 if (!scsi_status && (resp_info & RESID_UNDER))
437 logit = LOG_FCP;
438
James Smarte8b62012007-08-02 11:10:09 -0400439 lpfc_printf_vlog(vport, KERN_WARNING, logit,
440 "0730 FCP command x%x failed: x%x SNS x%x x%x "
441 "Data: x%x x%x x%x x%x x%x\n",
442 cmnd->cmnd[0], scsi_status,
443 be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info,
444 be32_to_cpu(fcprsp->rspResId),
445 be32_to_cpu(fcprsp->rspSnsLen),
446 be32_to_cpu(fcprsp->rspRspLen),
447 fcprsp->rspInfo3);
dea31012005-04-17 16:05:31 -0500448
449 if (resp_info & RSP_LEN_VALID) {
450 rsplen = be32_to_cpu(fcprsp->rspRspLen);
451 if ((rsplen != 0 && rsplen != 4 && rsplen != 8) ||
452 (fcprsp->rspInfo3 != RSP_NO_FAILURE)) {
453 host_status = DID_ERROR;
454 goto out;
455 }
456 }
457
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500458 scsi_set_resid(cmnd, 0);
dea31012005-04-17 16:05:31 -0500459 if (resp_info & RESID_UNDER) {
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500460 scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId));
dea31012005-04-17 16:05:31 -0500461
James Smarte8b62012007-08-02 11:10:09 -0400462 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
463 "0716 FCP Read Underrun, expected %d, "
464 "residual %d Data: x%x x%x x%x\n",
465 be32_to_cpu(fcpcmd->fcpDl),
466 scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0],
467 cmnd->underflow);
dea31012005-04-17 16:05:31 -0500468
469 /*
James Smart7054a602007-04-25 09:52:34 -0400470 * If there is an under run check if under run reported by
471 * storage array is same as the under run reported by HBA.
472 * If this is not same, there is a dropped frame.
473 */
474 if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) &&
475 fcpi_parm &&
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500476 (scsi_get_resid(cmnd) != fcpi_parm)) {
James Smarte8b62012007-08-02 11:10:09 -0400477 lpfc_printf_vlog(vport, KERN_WARNING,
478 LOG_FCP | LOG_FCP_ERROR,
479 "0735 FCP Read Check Error "
480 "and Underrun Data: x%x x%x x%x x%x\n",
481 be32_to_cpu(fcpcmd->fcpDl),
482 scsi_get_resid(cmnd), fcpi_parm,
483 cmnd->cmnd[0]);
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500484 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
James Smart7054a602007-04-25 09:52:34 -0400485 host_status = DID_ERROR;
486 }
487 /*
dea31012005-04-17 16:05:31 -0500488 * The cmnd->underflow is the minimum number of bytes that must
489 * be transfered for this command. Provided a sense condition
490 * is not present, make sure the actual amount transferred is at
491 * least the underflow value or fail.
492 */
493 if (!(resp_info & SNS_LEN_VALID) &&
494 (scsi_status == SAM_STAT_GOOD) &&
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500495 (scsi_bufflen(cmnd) - scsi_get_resid(cmnd)
496 < cmnd->underflow)) {
James Smarte8b62012007-08-02 11:10:09 -0400497 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
498 "0717 FCP command x%x residual "
499 "underrun converted to error "
500 "Data: x%x x%x x%x\n",
James Smart66dbfbe2007-08-05 06:08:38 -0400501 cmnd->cmnd[0], scsi_bufflen(cmnd),
James Smarte8b62012007-08-02 11:10:09 -0400502 scsi_get_resid(cmnd), cmnd->underflow);
dea31012005-04-17 16:05:31 -0500503 host_status = DID_ERROR;
504 }
505 } else if (resp_info & RESID_OVER) {
James Smarte8b62012007-08-02 11:10:09 -0400506 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
507 "0720 FCP command x%x residual overrun error. "
508 "Data: x%x x%x \n", cmnd->cmnd[0],
509 scsi_bufflen(cmnd), scsi_get_resid(cmnd));
dea31012005-04-17 16:05:31 -0500510 host_status = DID_ERROR;
511
512 /*
513 * Check SLI validation that all the transfer was actually done
514 * (fcpi_parm should be zero). Apply check only to reads.
515 */
516 } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm &&
517 (cmnd->sc_data_direction == DMA_FROM_DEVICE)) {
James Smarte8b62012007-08-02 11:10:09 -0400518 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR,
519 "0734 FCP Read Check Error Data: "
520 "x%x x%x x%x x%x\n",
521 be32_to_cpu(fcpcmd->fcpDl),
522 be32_to_cpu(fcprsp->rspResId),
523 fcpi_parm, cmnd->cmnd[0]);
dea31012005-04-17 16:05:31 -0500524 host_status = DID_ERROR;
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500525 scsi_set_resid(cmnd, scsi_bufflen(cmnd));
dea31012005-04-17 16:05:31 -0500526 }
527
528 out:
529 cmnd->result = ScsiResult(host_status, scsi_status);
530}
531
532static void
533lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
534 struct lpfc_iocbq *pIocbOut)
535{
536 struct lpfc_scsi_buf *lpfc_cmd =
537 (struct lpfc_scsi_buf *) pIocbIn->context1;
James Smart2e0fef82007-06-17 19:56:36 -0500538 struct lpfc_vport *vport = pIocbIn->vport;
dea31012005-04-17 16:05:31 -0500539 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
540 struct lpfc_nodelist *pnode = rdata->pnode;
541 struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500542 int result;
543 struct scsi_device *sdev, *tmp_sdev;
544 int depth = 0;
James Smartfa61a542008-01-11 01:52:42 -0500545 unsigned long flags;
dea31012005-04-17 16:05:31 -0500546
547 lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
548 lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
549
550 if (lpfc_cmd->status) {
551 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
552 (lpfc_cmd->result & IOERR_DRVR_MASK))
553 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
554 else if (lpfc_cmd->status >= IOSTAT_CNT)
555 lpfc_cmd->status = IOSTAT_DEFAULT;
556
James Smarte8b62012007-08-02 11:10:09 -0400557 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
558 "0729 FCP cmd x%x failed <%d/%d> "
559 "status: x%x result: x%x Data: x%x x%x\n",
560 cmd->cmnd[0],
561 cmd->device ? cmd->device->id : 0xffff,
562 cmd->device ? cmd->device->lun : 0xffff,
563 lpfc_cmd->status, lpfc_cmd->result,
564 pIocbOut->iocb.ulpContext,
565 lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
dea31012005-04-17 16:05:31 -0500566
567 switch (lpfc_cmd->status) {
568 case IOSTAT_FCP_RSP_ERROR:
569 /* Call FCP RSP handler to determine result */
James Smart2e0fef82007-06-17 19:56:36 -0500570 lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut);
dea31012005-04-17 16:05:31 -0500571 break;
572 case IOSTAT_NPORT_BSY:
573 case IOSTAT_FABRIC_BSY:
574 cmd->result = ScsiResult(DID_BUS_BUSY, 0);
575 break;
James Smart92d7f7b2007-06-17 19:56:38 -0500576 case IOSTAT_LOCAL_REJECT:
577 if (lpfc_cmd->result == RJT_UNAVAIL_PERM ||
578 lpfc_cmd->result == IOERR_NO_RESOURCES ||
579 lpfc_cmd->result == RJT_LOGIN_REQUIRED) {
580 cmd->result = ScsiResult(DID_REQUEUE, 0);
James Smart58da1ff2008-04-07 10:15:56 -0400581 break;
582 } /* else: fall through */
dea31012005-04-17 16:05:31 -0500583 default:
584 cmd->result = ScsiResult(DID_ERROR, 0);
585 break;
586 }
587
James Smart58da1ff2008-04-07 10:15:56 -0400588 if (!pnode || !NLP_CHK_NODE_ACT(pnode)
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -0400589 || (pnode->nlp_state != NLP_STE_MAPPED_NODE))
590 cmd->result = ScsiResult(DID_BUS_BUSY, SAM_STAT_BUSY);
dea31012005-04-17 16:05:31 -0500591 } else {
592 cmd->result = ScsiResult(DID_OK, 0);
593 }
594
595 if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) {
596 uint32_t *lp = (uint32_t *)cmd->sense_buffer;
597
James Smarte8b62012007-08-02 11:10:09 -0400598 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
599 "0710 Iodone <%d/%d> cmd %p, error "
600 "x%x SNS x%x x%x Data: x%x x%x\n",
601 cmd->device->id, cmd->device->lun, cmd,
602 cmd->result, *lp, *(lp + 3), cmd->retries,
603 scsi_get_resid(cmd));
dea31012005-04-17 16:05:31 -0500604 }
605
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500606 result = cmd->result;
607 sdev = cmd->device;
James Smart1dcb58e2007-04-25 09:51:30 -0400608 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
dea31012005-04-17 16:05:31 -0500609 cmd->scsi_done(cmd);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400610
Jamie Wellnitzb8086082006-02-28 22:33:12 -0500611 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
James Smartfa61a542008-01-11 01:52:42 -0500612 /*
613 * If there is a thread waiting for command completion
614 * wake up the thread.
615 */
616 spin_lock_irqsave(sdev->host->host_lock, flags);
617 lpfc_cmd->pCmd = NULL;
618 if (lpfc_cmd->waitq)
619 wake_up(lpfc_cmd->waitq);
620 spin_unlock_irqrestore(sdev->host->host_lock, flags);
Jamie Wellnitzb8086082006-02-28 22:33:12 -0500621 lpfc_release_scsi_buf(phba, lpfc_cmd);
622 return;
623 }
624
James Smart92d7f7b2007-06-17 19:56:38 -0500625
626 if (!result)
James Smart3de2a652007-08-02 11:09:59 -0400627 lpfc_rampup_queue_depth(vport, sdev);
James Smart92d7f7b2007-06-17 19:56:38 -0500628
James Smart58da1ff2008-04-07 10:15:56 -0400629 if (!result && pnode && NLP_CHK_NODE_ACT(pnode) &&
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500630 ((jiffies - pnode->last_ramp_up_time) >
631 LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
632 ((jiffies - pnode->last_q_full_time) >
633 LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
James Smart3de2a652007-08-02 11:09:59 -0400634 (vport->cfg_lun_queue_depth > sdev->queue_depth)) {
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500635 shost_for_each_device(tmp_sdev, sdev->host) {
James Smart3de2a652007-08-02 11:09:59 -0400636 if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500637 if (tmp_sdev->id != sdev->id)
638 continue;
639 if (tmp_sdev->ordered_tags)
640 scsi_adjust_queue_depth(tmp_sdev,
641 MSG_ORDERED_TAG,
642 tmp_sdev->queue_depth+1);
643 else
644 scsi_adjust_queue_depth(tmp_sdev,
645 MSG_SIMPLE_TAG,
646 tmp_sdev->queue_depth+1);
647
648 pnode->last_ramp_up_time = jiffies;
649 }
650 }
651 }
652
653 /*
654 * Check for queue full. If the lun is reporting queue full, then
655 * back off the lun queue depth to prevent target overloads.
656 */
James Smart58da1ff2008-04-07 10:15:56 -0400657 if (result == SAM_STAT_TASK_SET_FULL && pnode &&
658 NLP_CHK_NODE_ACT(pnode)) {
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500659 pnode->last_q_full_time = jiffies;
660
661 shost_for_each_device(tmp_sdev, sdev->host) {
662 if (tmp_sdev->id != sdev->id)
663 continue;
664 depth = scsi_track_queue_full(tmp_sdev,
665 tmp_sdev->queue_depth - 1);
666 }
667 /*
James Smart2e0fef82007-06-17 19:56:36 -0500668 * The queue depth cannot be lowered any more.
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500669 * Modify the returned error code to store
670 * the final depth value set by
671 * scsi_track_queue_full.
672 */
673 if (depth == -1)
674 depth = sdev->host->cmd_per_lun;
675
676 if (depth) {
James Smarte8b62012007-08-02 11:10:09 -0400677 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
678 "0711 detected queue full - lun queue "
679 "depth adjusted to %d.\n", depth);
James.Smart@Emulex.Com445cf4f2005-11-28 11:42:38 -0500680 }
681 }
682
James Smartfa61a542008-01-11 01:52:42 -0500683 /*
684 * If there is a thread waiting for command completion
685 * wake up the thread.
686 */
687 spin_lock_irqsave(sdev->host->host_lock, flags);
688 lpfc_cmd->pCmd = NULL;
689 if (lpfc_cmd->waitq)
690 wake_up(lpfc_cmd->waitq);
691 spin_unlock_irqrestore(sdev->host->host_lock, flags);
692
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400693 lpfc_release_scsi_buf(phba, lpfc_cmd);
dea31012005-04-17 16:05:31 -0500694}
695
696static void
James Smart2e0fef82007-06-17 19:56:36 -0500697lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
698 struct lpfc_nodelist *pnode)
dea31012005-04-17 16:05:31 -0500699{
James Smart2e0fef82007-06-17 19:56:36 -0500700 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -0500701 struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd;
702 struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd;
703 IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb;
704 struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq);
705 int datadir = scsi_cmnd->sc_data_direction;
James Smart7e2b19f2007-10-29 11:00:39 -0400706 char tag[2];
dea31012005-04-17 16:05:31 -0500707
James Smart58da1ff2008-04-07 10:15:56 -0400708 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
709 return;
710
dea31012005-04-17 16:05:31 -0500711 lpfc_cmd->fcp_rsp->rspSnsLen = 0;
James.Smart@Emulex.Com69859dc2005-08-10 15:02:37 -0400712 /* clear task management bits */
713 lpfc_cmd->fcp_cmnd->fcpCntl2 = 0;
dea31012005-04-17 16:05:31 -0500714
James.Smart@Emulex.Com91886522005-08-10 15:03:09 -0400715 int_to_scsilun(lpfc_cmd->pCmd->device->lun,
716 &lpfc_cmd->fcp_cmnd->fcp_lun);
dea31012005-04-17 16:05:31 -0500717
718 memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16);
719
James Smart7e2b19f2007-10-29 11:00:39 -0400720 if (scsi_populate_tag_msg(scsi_cmnd, tag)) {
721 switch (tag[0]) {
dea31012005-04-17 16:05:31 -0500722 case HEAD_OF_QUEUE_TAG:
723 fcp_cmnd->fcpCntl1 = HEAD_OF_Q;
724 break;
725 case ORDERED_QUEUE_TAG:
726 fcp_cmnd->fcpCntl1 = ORDERED_Q;
727 break;
728 default:
729 fcp_cmnd->fcpCntl1 = SIMPLE_Q;
730 break;
731 }
732 } else
733 fcp_cmnd->fcpCntl1 = 0;
734
735 /*
736 * There are three possibilities here - use scatter-gather segment, use
737 * the single mapping, or neither. Start the lpfc command prep by
738 * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first
739 * data bde entry.
740 */
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500741 if (scsi_sg_count(scsi_cmnd)) {
dea31012005-04-17 16:05:31 -0500742 if (datadir == DMA_TO_DEVICE) {
743 iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR;
744 iocb_cmd->un.fcpi.fcpi_parm = 0;
745 iocb_cmd->ulpPU = 0;
746 fcp_cmnd->fcpCntl3 = WRITE_DATA;
747 phba->fc4OutputRequests++;
748 } else {
749 iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
750 iocb_cmd->ulpPU = PARM_READ_CHECK;
FUJITA Tomonoria0b4f782007-06-17 19:56:39 -0500751 iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
dea31012005-04-17 16:05:31 -0500752 fcp_cmnd->fcpCntl3 = READ_DATA;
753 phba->fc4InputRequests++;
754 }
755 } else {
756 iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
757 iocb_cmd->un.fcpi.fcpi_parm = 0;
758 iocb_cmd->ulpPU = 0;
759 fcp_cmnd->fcpCntl3 = 0;
760 phba->fc4ControlRequests++;
761 }
762
763 /*
764 * Finish initializing those IOCB fields that are independent
765 * of the scsi_cmnd request_buffer
766 */
767 piocbq->iocb.ulpContext = pnode->nlp_rpi;
768 if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE)
769 piocbq->iocb.ulpFCP2Rcvy = 1;
James Smart09372822008-01-11 01:52:54 -0500770 else
771 piocbq->iocb.ulpFCP2Rcvy = 0;
dea31012005-04-17 16:05:31 -0500772
773 piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f);
774 piocbq->context1 = lpfc_cmd;
775 piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
776 piocbq->iocb.ulpTimeout = lpfc_cmd->timeout;
James Smart2e0fef82007-06-17 19:56:36 -0500777 piocbq->vport = vport;
dea31012005-04-17 16:05:31 -0500778}
779
780static int
James Smart2e0fef82007-06-17 19:56:36 -0500781lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport,
dea31012005-04-17 16:05:31 -0500782 struct lpfc_scsi_buf *lpfc_cmd,
James Smart420b630d2006-07-06 15:50:16 -0400783 unsigned int lun,
dea31012005-04-17 16:05:31 -0500784 uint8_t task_mgmt_cmd)
785{
dea31012005-04-17 16:05:31 -0500786 struct lpfc_iocbq *piocbq;
787 IOCB_t *piocb;
788 struct fcp_cmnd *fcp_cmnd;
James Smart0b18ac42006-05-01 21:50:40 -0400789 struct lpfc_rport_data *rdata = lpfc_cmd->rdata;
dea31012005-04-17 16:05:31 -0500790 struct lpfc_nodelist *ndlp = rdata->pnode;
791
James Smart58da1ff2008-04-07 10:15:56 -0400792 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
793 ndlp->nlp_state != NLP_STE_MAPPED_NODE)
dea31012005-04-17 16:05:31 -0500794 return 0;
dea31012005-04-17 16:05:31 -0500795
dea31012005-04-17 16:05:31 -0500796 piocbq = &(lpfc_cmd->cur_iocbq);
James Smart2e0fef82007-06-17 19:56:36 -0500797 piocbq->vport = vport;
798
dea31012005-04-17 16:05:31 -0500799 piocb = &piocbq->iocb;
800
801 fcp_cmnd = lpfc_cmd->fcp_cmnd;
James Smart420b630d2006-07-06 15:50:16 -0400802 int_to_scsilun(lun, &lpfc_cmd->fcp_cmnd->fcp_lun);
dea31012005-04-17 16:05:31 -0500803 fcp_cmnd->fcpCntl2 = task_mgmt_cmd;
804
805 piocb->ulpCommand = CMD_FCP_ICMND64_CR;
806
807 piocb->ulpContext = ndlp->nlp_rpi;
808 if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) {
809 piocb->ulpFCP2Rcvy = 1;
810 }
811 piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f);
812
813 /* ulpTimeout is only one byte */
814 if (lpfc_cmd->timeout > 0xff) {
815 /*
816 * Do not timeout the command at the firmware level.
817 * The driver will provide the timeout mechanism.
818 */
819 piocb->ulpTimeout = 0;
820 } else {
821 piocb->ulpTimeout = lpfc_cmd->timeout;
822 }
823
James Smart2e0fef82007-06-17 19:56:36 -0500824 return 1;
dea31012005-04-17 16:05:31 -0500825}
826
James Smart7054a602007-04-25 09:52:34 -0400827static void
828lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba,
829 struct lpfc_iocbq *cmdiocbq,
830 struct lpfc_iocbq *rspiocbq)
831{
832 struct lpfc_scsi_buf *lpfc_cmd =
833 (struct lpfc_scsi_buf *) cmdiocbq->context1;
834 if (lpfc_cmd)
835 lpfc_release_scsi_buf(phba, lpfc_cmd);
836 return;
837}
838
dea31012005-04-17 16:05:31 -0500839static int
James Smart2e0fef82007-06-17 19:56:36 -0500840lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport,
James Smart420b630d2006-07-06 15:50:16 -0400841 unsigned tgt_id, unsigned int lun,
842 struct lpfc_rport_data *rdata)
dea31012005-04-17 16:05:31 -0500843{
James Smart2e0fef82007-06-17 19:56:36 -0500844 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -0500845 struct lpfc_iocbq *iocbq;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400846 struct lpfc_iocbq *iocbqrsp;
dea31012005-04-17 16:05:31 -0500847 int ret;
848
James Smart58da1ff2008-04-07 10:15:56 -0400849 if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode))
James Smartf5603512006-12-02 13:35:43 -0500850 return FAILED;
851
James Smart0b18ac42006-05-01 21:50:40 -0400852 lpfc_cmd->rdata = rdata;
James Smart2e0fef82007-06-17 19:56:36 -0500853 ret = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun,
James Smart420b630d2006-07-06 15:50:16 -0400854 FCP_TARGET_RESET);
dea31012005-04-17 16:05:31 -0500855 if (!ret)
856 return FAILED;
857
dea31012005-04-17 16:05:31 -0500858 iocbq = &lpfc_cmd->cur_iocbq;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400859 iocbqrsp = lpfc_sli_get_iocbq(phba);
860
dea31012005-04-17 16:05:31 -0500861 if (!iocbqrsp)
862 return FAILED;
dea31012005-04-17 16:05:31 -0500863
James Smart0b18ac42006-05-01 21:50:40 -0400864 /* Issue Target Reset to TGT <num> */
James Smarte8b62012007-08-02 11:10:09 -0400865 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
866 "0702 Issue Target Reset to TGT %d Data: x%x x%x\n",
867 tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag);
James.Smart@Emulex.Com68876922005-10-28 20:29:47 -0400868 ret = lpfc_sli_issue_iocb_wait(phba,
869 &phba->sli.ring[phba->sli.fcp_ring],
870 iocbq, iocbqrsp, lpfc_cmd->timeout);
dea31012005-04-17 16:05:31 -0500871 if (ret != IOCB_SUCCESS) {
James Smart7054a602007-04-25 09:52:34 -0400872 if (ret == IOCB_TIMEDOUT)
873 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
dea31012005-04-17 16:05:31 -0500874 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
dea31012005-04-17 16:05:31 -0500875 } else {
876 ret = SUCCESS;
877 lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4];
878 lpfc_cmd->status = iocbqrsp->iocb.ulpStatus;
879 if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
880 (lpfc_cmd->result & IOERR_DRVR_MASK))
881 lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
882 }
883
James Bottomley604a3e32005-10-29 10:28:33 -0500884 lpfc_sli_release_iocbq(phba, iocbqrsp);
dea31012005-04-17 16:05:31 -0500885 return ret;
886}
887
dea31012005-04-17 16:05:31 -0500888const char *
889lpfc_info(struct Scsi_Host *host)
890{
James Smart2e0fef82007-06-17 19:56:36 -0500891 struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata;
892 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -0500893 int len;
894 static char lpfcinfobuf[384];
895
896 memset(lpfcinfobuf,0,384);
897 if (phba && phba->pcidev){
898 strncpy(lpfcinfobuf, phba->ModelDesc, 256);
899 len = strlen(lpfcinfobuf);
900 snprintf(lpfcinfobuf + len,
901 384-len,
902 " on PCI bus %02x device %02x irq %d",
903 phba->pcidev->bus->number,
904 phba->pcidev->devfn,
905 phba->pcidev->irq);
906 len = strlen(lpfcinfobuf);
907 if (phba->Port[0]) {
908 snprintf(lpfcinfobuf + len,
909 384-len,
910 " port %s",
911 phba->Port);
912 }
913 }
914 return lpfcinfobuf;
915}
916
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500917static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba)
918{
919 unsigned long poll_tmo_expires =
920 (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo));
921
922 if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt)
923 mod_timer(&phba->fcp_poll_timer,
924 poll_tmo_expires);
925}
926
927void lpfc_poll_start_timer(struct lpfc_hba * phba)
928{
929 lpfc_poll_rearm_timer(phba);
930}
931
932void lpfc_poll_timeout(unsigned long ptr)
933{
James Smart2e0fef82007-06-17 19:56:36 -0500934 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500935
936 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
937 lpfc_sli_poll_fcp_ring (phba);
938 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
939 lpfc_poll_rearm_timer(phba);
940 }
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -0500941}
942
dea31012005-04-17 16:05:31 -0500943static int
944lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
945{
James Smart2e0fef82007-06-17 19:56:36 -0500946 struct Scsi_Host *shost = cmnd->device->host;
947 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
948 struct lpfc_hba *phba = vport->phba;
949 struct lpfc_sli *psli = &phba->sli;
dea31012005-04-17 16:05:31 -0500950 struct lpfc_rport_data *rdata = cmnd->device->hostdata;
951 struct lpfc_nodelist *ndlp = rdata->pnode;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -0400952 struct lpfc_scsi_buf *lpfc_cmd;
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -0400953 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -0400954 int err;
dea31012005-04-17 16:05:31 -0500955
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -0400956 err = fc_remote_port_chkready(rport);
957 if (err) {
958 cmnd->result = err;
dea31012005-04-17 16:05:31 -0500959 goto out_fail_command;
960 }
961
962 /*
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -0400963 * Catch race where our node has transitioned, but the
964 * transport is still transitioning.
dea31012005-04-17 16:05:31 -0500965 */
James Smart58da1ff2008-04-07 10:15:56 -0400966 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -0400967 cmnd->result = ScsiResult(DID_BUS_BUSY, 0);
968 goto out_fail_command;
dea31012005-04-17 16:05:31 -0500969 }
James Smarted957682007-06-17 19:56:37 -0500970 lpfc_cmd = lpfc_get_scsi_buf(phba);
dea31012005-04-17 16:05:31 -0500971 if (lpfc_cmd == NULL) {
James Smart92d7f7b2007-06-17 19:56:38 -0500972 lpfc_adjust_queue_depth(phba);
973
James Smarte8b62012007-08-02 11:10:09 -0400974 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
975 "0707 driver's buffer pool is empty, "
976 "IO busied\n");
dea31012005-04-17 16:05:31 -0500977 goto out_host_busy;
978 }
979
980 /*
981 * Store the midlayer's command structure for the completion phase
982 * and complete the command initialization.
983 */
984 lpfc_cmd->pCmd = cmnd;
985 lpfc_cmd->rdata = rdata;
986 lpfc_cmd->timeout = 0;
987 cmnd->host_scribble = (unsigned char *)lpfc_cmd;
988 cmnd->scsi_done = done;
989
990 err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd);
991 if (err)
992 goto out_host_busy_free_buf;
993
James Smart2e0fef82007-06-17 19:56:36 -0500994 lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp);
dea31012005-04-17 16:05:31 -0500995
996 err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring],
James Smart92d7f7b2007-06-17 19:56:38 -0500997 &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB);
dea31012005-04-17 16:05:31 -0500998 if (err)
999 goto out_host_busy_free_buf;
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001000
1001 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1002 lpfc_sli_poll_fcp_ring(phba);
1003 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
1004 lpfc_poll_rearm_timer(phba);
1005 }
1006
dea31012005-04-17 16:05:31 -05001007 return 0;
1008
1009 out_host_busy_free_buf:
James Smartbcf4dbf2006-07-06 15:50:08 -04001010 lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001011 lpfc_release_scsi_buf(phba, lpfc_cmd);
dea31012005-04-17 16:05:31 -05001012 out_host_busy:
1013 return SCSI_MLQUEUE_HOST_BUSY;
1014
1015 out_fail_command:
1016 done(cmnd);
1017 return 0;
1018}
1019
James Smarta90f5682006-08-17 11:58:04 -04001020static void
1021lpfc_block_error_handler(struct scsi_cmnd *cmnd)
1022{
1023 struct Scsi_Host *shost = cmnd->device->host;
1024 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1025
1026 spin_lock_irq(shost->host_lock);
1027 while (rport->port_state == FC_PORTSTATE_BLOCKED) {
1028 spin_unlock_irq(shost->host_lock);
1029 msleep(1000);
1030 spin_lock_irq(shost->host_lock);
1031 }
1032 spin_unlock_irq(shost->host_lock);
1033 return;
1034}
James.Smart@Emulex.Com63c59c32005-11-28 11:41:53 -05001035
dea31012005-04-17 16:05:31 -05001036static int
James.Smart@Emulex.Com63c59c32005-11-28 11:41:53 -05001037lpfc_abort_handler(struct scsi_cmnd *cmnd)
dea31012005-04-17 16:05:31 -05001038{
James Smart2e0fef82007-06-17 19:56:36 -05001039 struct Scsi_Host *shost = cmnd->device->host;
1040 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1041 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -05001042 struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring];
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001043 struct lpfc_iocbq *iocb;
1044 struct lpfc_iocbq *abtsiocb;
dea31012005-04-17 16:05:31 -05001045 struct lpfc_scsi_buf *lpfc_cmd;
dea31012005-04-17 16:05:31 -05001046 IOCB_t *cmd, *icmd;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001047 int ret = SUCCESS;
James Smartfa61a542008-01-11 01:52:42 -05001048 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001049
James Smarta90f5682006-08-17 11:58:04 -04001050 lpfc_block_error_handler(cmnd);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001051 lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
1052 BUG_ON(!lpfc_cmd);
dea31012005-04-17 16:05:31 -05001053
1054 /*
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001055 * If pCmd field of the corresponding lpfc_scsi_buf structure
1056 * points to a different SCSI command, then the driver has
1057 * already completed this command, but the midlayer did not
1058 * see the completion before the eh fired. Just return
1059 * SUCCESS.
dea31012005-04-17 16:05:31 -05001060 */
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001061 iocb = &lpfc_cmd->cur_iocbq;
1062 if (lpfc_cmd->pCmd != cmnd)
1063 goto out;
dea31012005-04-17 16:05:31 -05001064
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001065 BUG_ON(iocb->context1 != lpfc_cmd);
dea31012005-04-17 16:05:31 -05001066
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001067 abtsiocb = lpfc_sli_get_iocbq(phba);
1068 if (abtsiocb == NULL) {
1069 ret = FAILED;
dea31012005-04-17 16:05:31 -05001070 goto out;
1071 }
1072
dea31012005-04-17 16:05:31 -05001073 /*
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001074 * The scsi command can not be in txq and it is in flight because the
1075 * pCmd is still pointig at the SCSI command we have to abort. There
1076 * is no need to search the txcmplq. Just send an abort to the FW.
dea31012005-04-17 16:05:31 -05001077 */
dea31012005-04-17 16:05:31 -05001078
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001079 cmd = &iocb->iocb;
1080 icmd = &abtsiocb->iocb;
1081 icmd->un.acxri.abortType = ABORT_TYPE_ABTS;
1082 icmd->un.acxri.abortContextTag = cmd->ulpContext;
1083 icmd->un.acxri.abortIoTag = cmd->ulpIoTag;
dea31012005-04-17 16:05:31 -05001084
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001085 icmd->ulpLe = 1;
1086 icmd->ulpClass = cmd->ulpClass;
James Smart2e0fef82007-06-17 19:56:36 -05001087 if (lpfc_is_link_up(phba))
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001088 icmd->ulpCommand = CMD_ABORT_XRI_CN;
1089 else
1090 icmd->ulpCommand = CMD_CLOSE_XRI_CN;
dea31012005-04-17 16:05:31 -05001091
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001092 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
James Smart2e0fef82007-06-17 19:56:36 -05001093 abtsiocb->vport = vport;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001094 if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) {
1095 lpfc_sli_release_iocbq(phba, abtsiocb);
1096 ret = FAILED;
1097 goto out;
1098 }
1099
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001100 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
1101 lpfc_sli_poll_fcp_ring (phba);
1102
James Smartfa61a542008-01-11 01:52:42 -05001103 lpfc_cmd->waitq = &waitq;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001104 /* Wait for abort to complete */
James Smartfa61a542008-01-11 01:52:42 -05001105 wait_event_timeout(waitq,
1106 (lpfc_cmd->pCmd != cmnd),
1107 (2*vport->cfg_devloss_tmo*HZ));
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001108
James Smartfa61a542008-01-11 01:52:42 -05001109 spin_lock_irq(shost->host_lock);
1110 lpfc_cmd->waitq = NULL;
1111 spin_unlock_irq(shost->host_lock);
dea31012005-04-17 16:05:31 -05001112
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001113 if (lpfc_cmd->pCmd == cmnd) {
1114 ret = FAILED;
James Smarte8b62012007-08-02 11:10:09 -04001115 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1116 "0748 abort handler timed out waiting "
1117 "for abort to complete: ret %#x, ID %d, "
1118 "LUN %d, snum %#lx\n",
1119 ret, cmnd->device->id, cmnd->device->lun,
1120 cmnd->serial_number);
dea31012005-04-17 16:05:31 -05001121 }
1122
1123 out:
James Smarte8b62012007-08-02 11:10:09 -04001124 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
1125 "0749 SCSI Layer I/O Abort Request Status x%x ID %d "
1126 "LUN %d snum %#lx\n", ret, cmnd->device->id,
1127 cmnd->device->lun, cmnd->serial_number);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001128 return ret;
dea31012005-04-17 16:05:31 -05001129}
1130
1131static int
James Smart7054a602007-04-25 09:52:34 -04001132lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
dea31012005-04-17 16:05:31 -05001133{
James Smart2e0fef82007-06-17 19:56:36 -05001134 struct Scsi_Host *shost = cmnd->device->host;
1135 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1136 struct lpfc_hba *phba = vport->phba;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001137 struct lpfc_scsi_buf *lpfc_cmd;
1138 struct lpfc_iocbq *iocbq, *iocbqrsp;
dea31012005-04-17 16:05:31 -05001139 struct lpfc_rport_data *rdata = cmnd->device->hostdata;
1140 struct lpfc_nodelist *pnode = rdata->pnode;
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001141 uint32_t cmd_result = 0, cmd_status = 0;
dea31012005-04-17 16:05:31 -05001142 int ret = FAILED;
James Smart7054a602007-04-25 09:52:34 -04001143 int iocb_status = IOCB_SUCCESS;
dea31012005-04-17 16:05:31 -05001144 int cnt, loopcnt;
1145
James Smarta90f5682006-08-17 11:58:04 -04001146 lpfc_block_error_handler(cmnd);
James Smartf5603512006-12-02 13:35:43 -05001147 loopcnt = 0;
dea31012005-04-17 16:05:31 -05001148 /*
1149 * If target is not in a MAPPED state, delay the reset until
James Smartc01f3202006-08-18 17:47:08 -04001150 * target is rediscovered or devloss timeout expires.
dea31012005-04-17 16:05:31 -05001151 */
James Smart92d7f7b2007-06-17 19:56:38 -05001152 while (1) {
James Smart58da1ff2008-04-07 10:15:56 -04001153 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
James Smart7054a602007-04-25 09:52:34 -04001154 goto out;
dea31012005-04-17 16:05:31 -05001155
1156 if (pnode->nlp_state != NLP_STE_MAPPED_NODE) {
Nishanth Aravamudana9a30472005-11-07 01:01:20 -08001157 schedule_timeout_uninterruptible(msecs_to_jiffies(500));
James Smartf5603512006-12-02 13:35:43 -05001158 loopcnt++;
1159 rdata = cmnd->device->hostdata;
1160 if (!rdata ||
James Smart3de2a652007-08-02 11:09:59 -04001161 (loopcnt > ((vport->cfg_devloss_tmo * 2) + 1))){
James Smarte8b62012007-08-02 11:10:09 -04001162 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1163 "0721 LUN Reset rport "
1164 "failure: cnt x%x rdata x%p\n",
1165 loopcnt, rdata);
James Smartf5603512006-12-02 13:35:43 -05001166 goto out;
1167 }
1168 pnode = rdata->pnode;
James Smart58da1ff2008-04-07 10:15:56 -04001169 if (!pnode || !NLP_CHK_NODE_ACT(pnode))
James Smart7054a602007-04-25 09:52:34 -04001170 goto out;
dea31012005-04-17 16:05:31 -05001171 }
James Smartf5603512006-12-02 13:35:43 -05001172 if (pnode->nlp_state == NLP_STE_MAPPED_NODE)
dea31012005-04-17 16:05:31 -05001173 break;
1174 }
1175
James Smart2e0fef82007-06-17 19:56:36 -05001176 lpfc_cmd = lpfc_get_scsi_buf(phba);
dea31012005-04-17 16:05:31 -05001177 if (lpfc_cmd == NULL)
1178 goto out;
1179
dea31012005-04-17 16:05:31 -05001180 lpfc_cmd->timeout = 60;
James Smart0b18ac42006-05-01 21:50:40 -04001181 lpfc_cmd->rdata = rdata;
dea31012005-04-17 16:05:31 -05001182
James Smart2e0fef82007-06-17 19:56:36 -05001183 ret = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, cmnd->device->lun,
James Smart7054a602007-04-25 09:52:34 -04001184 FCP_TARGET_RESET);
dea31012005-04-17 16:05:31 -05001185 if (!ret)
1186 goto out_free_scsi_buf;
1187
1188 iocbq = &lpfc_cmd->cur_iocbq;
1189
1190 /* get a buffer for this IOCB command response */
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001191 iocbqrsp = lpfc_sli_get_iocbq(phba);
dea31012005-04-17 16:05:31 -05001192 if (iocbqrsp == NULL)
1193 goto out_free_scsi_buf;
1194
James Smarte8b62012007-08-02 11:10:09 -04001195 lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
1196 "0703 Issue target reset to TGT %d LUN %d "
1197 "rpi x%x nlp_flag x%x\n", cmnd->device->id,
1198 cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag);
James Smart7054a602007-04-25 09:52:34 -04001199 iocb_status = lpfc_sli_issue_iocb_wait(phba,
James.Smart@Emulex.Com68876922005-10-28 20:29:47 -04001200 &phba->sli.ring[phba->sli.fcp_ring],
1201 iocbq, iocbqrsp, lpfc_cmd->timeout);
dea31012005-04-17 16:05:31 -05001202
James Smart7054a602007-04-25 09:52:34 -04001203 if (iocb_status == IOCB_TIMEDOUT)
1204 iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl;
1205
1206 if (iocb_status == IOCB_SUCCESS)
1207 ret = SUCCESS;
1208 else
1209 ret = iocb_status;
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001210
1211 cmd_result = iocbqrsp->iocb.un.ulpWord[4];
1212 cmd_status = iocbqrsp->iocb.ulpStatus;
1213
1214 lpfc_sli_release_iocbq(phba, iocbqrsp);
dea31012005-04-17 16:05:31 -05001215
1216 /*
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001217 * All outstanding txcmplq I/Os should have been aborted by the device.
dea31012005-04-17 16:05:31 -05001218 * Unfortunately, some targets do not abide by this forcing the driver
1219 * to double check.
1220 */
James Smart51ef4c22007-08-02 11:10:31 -04001221 cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun,
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001222 LPFC_CTX_LUN);
1223 if (cnt)
James Smart51ef4c22007-08-02 11:10:31 -04001224 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001225 cmnd->device->id, cmnd->device->lun,
James Smart51ef4c22007-08-02 11:10:31 -04001226 LPFC_CTX_LUN);
dea31012005-04-17 16:05:31 -05001227 loopcnt = 0;
James Smart92d7f7b2007-06-17 19:56:38 -05001228 while(cnt) {
Nishanth Aravamudana9a30472005-11-07 01:01:20 -08001229 schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ);
dea31012005-04-17 16:05:31 -05001230
1231 if (++loopcnt
James Smart3de2a652007-08-02 11:09:59 -04001232 > (2 * vport->cfg_devloss_tmo)/LPFC_RESET_WAIT)
dea31012005-04-17 16:05:31 -05001233 break;
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001234
James Smart51ef4c22007-08-02 11:10:31 -04001235 cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id,
1236 cmnd->device->lun, LPFC_CTX_LUN);
dea31012005-04-17 16:05:31 -05001237 }
1238
1239 if (cnt) {
James Smarte8b62012007-08-02 11:10:09 -04001240 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1241 "0719 device reset I/O flush failure: "
1242 "cnt x%x\n", cnt);
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001243 ret = FAILED;
dea31012005-04-17 16:05:31 -05001244 }
1245
dea31012005-04-17 16:05:31 -05001246out_free_scsi_buf:
James Smart7054a602007-04-25 09:52:34 -04001247 if (iocb_status != IOCB_TIMEDOUT) {
1248 lpfc_release_scsi_buf(phba, lpfc_cmd);
1249 }
James Smarte8b62012007-08-02 11:10:09 -04001250 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1251 "0713 SCSI layer issued device reset (%d, %d) "
1252 "return x%x status x%x result x%x\n",
1253 cmnd->device->id, cmnd->device->lun, ret,
1254 cmd_status, cmd_result);
dea31012005-04-17 16:05:31 -05001255out:
1256 return ret;
1257}
1258
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04001259static int
James Smart7054a602007-04-25 09:52:34 -04001260lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
dea31012005-04-17 16:05:31 -05001261{
James Smart2e0fef82007-06-17 19:56:36 -05001262 struct Scsi_Host *shost = cmnd->device->host;
1263 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1264 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -05001265 struct lpfc_nodelist *ndlp = NULL;
1266 int match;
1267 int ret = FAILED, i, err_count = 0;
1268 int cnt, loopcnt;
James.Smart@Emulex.Com0bd4ca22005-10-28 20:30:02 -04001269 struct lpfc_scsi_buf * lpfc_cmd;
dea31012005-04-17 16:05:31 -05001270
James Smarta90f5682006-08-17 11:58:04 -04001271 lpfc_block_error_handler(cmnd);
James.Smart@Emulex.Com63c59c32005-11-28 11:41:53 -05001272
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001273 lpfc_cmd = lpfc_get_scsi_buf(phba);
dea31012005-04-17 16:05:31 -05001274 if (lpfc_cmd == NULL)
1275 goto out;
1276
1277 /* The lpfc_cmd storage is reused. Set all loop invariants. */
1278 lpfc_cmd->timeout = 60;
dea31012005-04-17 16:05:31 -05001279
1280 /*
1281 * Since the driver manages a single bus device, reset all
1282 * targets known to the driver. Should any target reset
1283 * fail, this routine returns failure to the midlayer.
1284 */
James Smarte17da182006-07-06 15:49:25 -04001285 for (i = 0; i < LPFC_MAX_TARGET; i++) {
James Smart685f0bf2007-04-25 09:53:08 -04001286 /* Search for mapped node by target ID */
dea31012005-04-17 16:05:31 -05001287 match = 0;
James Smart2e0fef82007-06-17 19:56:36 -05001288 spin_lock_irq(shost->host_lock);
1289 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
James Smarte47c9092008-02-08 18:49:26 -05001290 if (!NLP_CHK_NODE_ACT(ndlp))
1291 continue;
James Smart685f0bf2007-04-25 09:53:08 -04001292 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
1293 i == ndlp->nlp_sid &&
1294 ndlp->rport) {
dea31012005-04-17 16:05:31 -05001295 match = 1;
1296 break;
1297 }
1298 }
James Smart2e0fef82007-06-17 19:56:36 -05001299 spin_unlock_irq(shost->host_lock);
dea31012005-04-17 16:05:31 -05001300 if (!match)
1301 continue;
1302
James Smart2e0fef82007-06-17 19:56:36 -05001303 ret = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i,
1304 cmnd->device->lun,
James Smart420b630d2006-07-06 15:50:16 -04001305 ndlp->rport->dd_data);
dea31012005-04-17 16:05:31 -05001306 if (ret != SUCCESS) {
James Smarte8b62012007-08-02 11:10:09 -04001307 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1308 "0700 Bus Reset on target %d failed\n",
1309 i);
dea31012005-04-17 16:05:31 -05001310 err_count++;
James Smart7054a602007-04-25 09:52:34 -04001311 break;
dea31012005-04-17 16:05:31 -05001312 }
1313 }
1314
James Smart7054a602007-04-25 09:52:34 -04001315 if (ret != IOCB_TIMEDOUT)
1316 lpfc_release_scsi_buf(phba, lpfc_cmd);
1317
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001318 if (err_count == 0)
1319 ret = SUCCESS;
James Smart7054a602007-04-25 09:52:34 -04001320 else
1321 ret = FAILED;
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001322
1323 /*
1324 * All outstanding txcmplq I/Os should have been aborted by
1325 * the targets. Unfortunately, some targets do not abide by
1326 * this forcing the driver to double check.
1327 */
James Smart51ef4c22007-08-02 11:10:31 -04001328 cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST);
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001329 if (cnt)
James Smart51ef4c22007-08-02 11:10:31 -04001330 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
1331 0, 0, LPFC_CTX_HOST);
dea31012005-04-17 16:05:31 -05001332 loopcnt = 0;
James Smart92d7f7b2007-06-17 19:56:38 -05001333 while(cnt) {
Nishanth Aravamudana9a30472005-11-07 01:01:20 -08001334 schedule_timeout_uninterruptible(LPFC_RESET_WAIT*HZ);
dea31012005-04-17 16:05:31 -05001335
1336 if (++loopcnt
James Smart3de2a652007-08-02 11:09:59 -04001337 > (2 * vport->cfg_devloss_tmo)/LPFC_RESET_WAIT)
dea31012005-04-17 16:05:31 -05001338 break;
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001339
James Smart51ef4c22007-08-02 11:10:31 -04001340 cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST);
dea31012005-04-17 16:05:31 -05001341 }
1342
1343 if (cnt) {
James Smarte8b62012007-08-02 11:10:09 -04001344 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1345 "0715 Bus Reset I/O flush failure: "
1346 "cnt x%x left x%x\n", cnt, i);
James.Smart@Emulex.Com6175c022005-11-28 11:42:05 -05001347 ret = FAILED;
dea31012005-04-17 16:05:31 -05001348 }
1349
James Smarte8b62012007-08-02 11:10:09 -04001350 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1351 "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
dea31012005-04-17 16:05:31 -05001352out:
1353 return ret;
1354}
1355
1356static int
dea31012005-04-17 16:05:31 -05001357lpfc_slave_alloc(struct scsi_device *sdev)
1358{
James Smart2e0fef82007-06-17 19:56:36 -05001359 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
1360 struct lpfc_hba *phba = vport->phba;
dea31012005-04-17 16:05:31 -05001361 struct lpfc_scsi_buf *scsi_buf = NULL;
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -04001362 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
dea31012005-04-17 16:05:31 -05001363 uint32_t total = 0, i;
1364 uint32_t num_to_alloc = 0;
1365 unsigned long flags;
dea31012005-04-17 16:05:31 -05001366
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -04001367 if (!rport || fc_remote_port_chkready(rport))
dea31012005-04-17 16:05:31 -05001368 return -ENXIO;
1369
James.Smart@Emulex.Com19a7b4a2005-10-18 12:03:35 -04001370 sdev->hostdata = rport->dd_data;
dea31012005-04-17 16:05:31 -05001371
1372 /*
1373 * Populate the cmds_per_lun count scsi_bufs into this host's globally
1374 * available list of scsi buffers. Don't allocate more than the
James.Smart@Emulex.Coma784efb2005-10-28 20:29:51 -04001375 * HBA limit conveyed to the midlayer via the host structure. The
1376 * formula accounts for the lun_queue_depth + error handlers + 1
1377 * extra. This list of scsi bufs exists for the lifetime of the driver.
dea31012005-04-17 16:05:31 -05001378 */
1379 total = phba->total_scsi_bufs;
James Smart3de2a652007-08-02 11:09:59 -04001380 num_to_alloc = vport->cfg_lun_queue_depth + 2;
James Smart92d7f7b2007-06-17 19:56:38 -05001381
1382 /* Allow some exchanges to be available always to complete discovery */
1383 if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
James Smarte8b62012007-08-02 11:10:09 -04001384 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
1385 "0704 At limitation of %d preallocated "
1386 "command buffers\n", total);
dea31012005-04-17 16:05:31 -05001387 return 0;
James Smart92d7f7b2007-06-17 19:56:38 -05001388 /* Allow some exchanges to be available always to complete discovery */
1389 } else if (total + num_to_alloc >
1390 phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) {
James Smarte8b62012007-08-02 11:10:09 -04001391 lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
1392 "0705 Allocation request of %d "
1393 "command buffers will exceed max of %d. "
1394 "Reducing allocation request to %d.\n",
1395 num_to_alloc, phba->cfg_hba_queue_depth,
1396 (phba->cfg_hba_queue_depth - total));
dea31012005-04-17 16:05:31 -05001397 num_to_alloc = phba->cfg_hba_queue_depth - total;
1398 }
1399
1400 for (i = 0; i < num_to_alloc; i++) {
James Smart2e0fef82007-06-17 19:56:36 -05001401 scsi_buf = lpfc_new_scsi_buf(vport);
dea31012005-04-17 16:05:31 -05001402 if (!scsi_buf) {
James Smarte8b62012007-08-02 11:10:09 -04001403 lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
1404 "0706 Failed to allocate "
1405 "command buffer\n");
dea31012005-04-17 16:05:31 -05001406 break;
1407 }
1408
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001409 spin_lock_irqsave(&phba->scsi_buf_list_lock, flags);
dea31012005-04-17 16:05:31 -05001410 phba->total_scsi_bufs++;
1411 list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list);
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001412 spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags);
dea31012005-04-17 16:05:31 -05001413 }
1414 return 0;
1415}
1416
1417static int
1418lpfc_slave_configure(struct scsi_device *sdev)
1419{
James Smart2e0fef82007-06-17 19:56:36 -05001420 struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
1421 struct lpfc_hba *phba = vport->phba;
1422 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
dea31012005-04-17 16:05:31 -05001423
1424 if (sdev->tagged_supported)
James Smart3de2a652007-08-02 11:09:59 -04001425 scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth);
dea31012005-04-17 16:05:31 -05001426 else
James Smart3de2a652007-08-02 11:09:59 -04001427 scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth);
dea31012005-04-17 16:05:31 -05001428
1429 /*
1430 * Initialize the fc transport attributes for the target
1431 * containing this scsi device. Also note that the driver's
1432 * target pointer is stored in the starget_data for the
1433 * driver's sysfs entry point functions.
1434 */
James Smart3de2a652007-08-02 11:09:59 -04001435 rport->dev_loss_tmo = vport->cfg_devloss_tmo;
dea31012005-04-17 16:05:31 -05001436
James.Smart@Emulex.Com875fbdf2005-11-29 16:32:13 -05001437 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1438 lpfc_sli_poll_fcp_ring(phba);
1439 if (phba->cfg_poll & DISABLE_FCP_RING_INT)
1440 lpfc_poll_rearm_timer(phba);
1441 }
1442
dea31012005-04-17 16:05:31 -05001443 return 0;
1444}
1445
1446static void
1447lpfc_slave_destroy(struct scsi_device *sdev)
1448{
1449 sdev->hostdata = NULL;
1450 return;
1451}
1452
James Smart92d7f7b2007-06-17 19:56:38 -05001453
dea31012005-04-17 16:05:31 -05001454struct scsi_host_template lpfc_template = {
1455 .module = THIS_MODULE,
1456 .name = LPFC_DRIVER_NAME,
1457 .info = lpfc_info,
1458 .queuecommand = lpfc_queuecommand,
1459 .eh_abort_handler = lpfc_abort_handler,
James Smart7054a602007-04-25 09:52:34 -04001460 .eh_device_reset_handler= lpfc_device_reset_handler,
1461 .eh_bus_reset_handler = lpfc_bus_reset_handler,
dea31012005-04-17 16:05:31 -05001462 .slave_alloc = lpfc_slave_alloc,
1463 .slave_configure = lpfc_slave_configure,
1464 .slave_destroy = lpfc_slave_destroy,
James Smart47a86172007-04-25 09:53:22 -04001465 .scan_finished = lpfc_scan_finished,
dea31012005-04-17 16:05:31 -05001466 .this_id = -1,
James Smart83108bd2008-01-11 01:53:09 -05001467 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
dea31012005-04-17 16:05:31 -05001468 .cmd_per_lun = LPFC_CMD_PER_LUN,
1469 .use_clustering = ENABLE_CLUSTERING,
James Smart2e0fef82007-06-17 19:56:36 -05001470 .shost_attrs = lpfc_hba_attrs,
James.Smart@Emulex.Com564b2962005-06-25 10:34:17 -04001471 .max_sectors = 0xFFFF,
dea31012005-04-17 16:05:31 -05001472};
James Smart3de2a652007-08-02 11:09:59 -04001473
1474struct scsi_host_template lpfc_vport_template = {
1475 .module = THIS_MODULE,
1476 .name = LPFC_DRIVER_NAME,
1477 .info = lpfc_info,
1478 .queuecommand = lpfc_queuecommand,
1479 .eh_abort_handler = lpfc_abort_handler,
1480 .eh_device_reset_handler= lpfc_device_reset_handler,
1481 .eh_bus_reset_handler = lpfc_bus_reset_handler,
1482 .slave_alloc = lpfc_slave_alloc,
1483 .slave_configure = lpfc_slave_configure,
1484 .slave_destroy = lpfc_slave_destroy,
1485 .scan_finished = lpfc_scan_finished,
1486 .this_id = -1,
James Smart83108bd2008-01-11 01:53:09 -05001487 .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT,
James Smart3de2a652007-08-02 11:09:59 -04001488 .cmd_per_lun = LPFC_CMD_PER_LUN,
1489 .use_clustering = ENABLE_CLUSTERING,
1490 .shost_attrs = lpfc_vport_attrs,
1491 .max_sectors = 0xFFFF,
1492};