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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[deliverable/linux.git] / drivers / message / fusion / mptfc.c
1 /*
2 * linux/drivers/message/fusion/mptfc.c
3 * For use with LSI Logic PCI chip/adapter(s)
4 * running LSI Logic Fusion MPT (Message Passing Technology) firmware.
5 *
6 * Copyright (c) 1999-2005 LSI Logic Corporation
7 * (mailto:mpt_linux_developer@lsil.com)
8 *
9 */
10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
11 /*
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; version 2 of the License.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 NO WARRANTY
22 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
23 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
24 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
25 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
26 solely responsible for determining the appropriateness of using and
27 distributing the Program and assumes all risks associated with its
28 exercise of rights under this Agreement, including but not limited to
29 the risks and costs of program errors, damage to or loss of data,
30 programs or equipment, and unavailability or interruption of operations.
31
32 DISCLAIMER OF LIABILITY
33 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
34 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
36 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
37 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
39 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
40
41 You should have received a copy of the GNU General Public License
42 along with this program; if not, write to the Free Software
43 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
44 */
45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
46 #include "linux_compat.h" /* linux-2.6 tweaks */
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/kdev_t.h>
52 #include <linux/blkdev.h>
53 #include <linux/delay.h> /* for mdelay */
54 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
55 #include <linux/reboot.h> /* notifier code */
56 #include <linux/sched.h>
57 #include <linux/workqueue.h>
58 #include <linux/sort.h>
59
60 #include <scsi/scsi.h>
61 #include <scsi/scsi_cmnd.h>
62 #include <scsi/scsi_device.h>
63 #include <scsi/scsi_host.h>
64 #include <scsi/scsi_tcq.h>
65 #include <scsi/scsi_transport_fc.h>
66
67 #include "mptbase.h"
68 #include "mptscsih.h"
69
70 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
71 #define my_NAME "Fusion MPT FC Host driver"
72 #define my_VERSION MPT_LINUX_VERSION_COMMON
73 #define MYNAM "mptfc"
74
75 MODULE_AUTHOR(MODULEAUTHOR);
76 MODULE_DESCRIPTION(my_NAME);
77 MODULE_LICENSE("GPL");
78
79 /* Command line args */
80 static int mpt_pq_filter = 0;
81 module_param(mpt_pq_filter, int, 0);
82 MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
83
84 #define MPTFC_DEV_LOSS_TMO (60)
85 static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO; /* reasonable default */
86 module_param(mptfc_dev_loss_tmo, int, 0);
87 MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
88 " transport to wait for an rport to "
89 " return following a device loss event."
90 " Default=60.");
91
92 static int mptfcDoneCtx = -1;
93 static int mptfcTaskCtx = -1;
94 static int mptfcInternalCtx = -1; /* Used only for internal commands */
95
96 static int mptfc_target_alloc(struct scsi_target *starget);
97 static int mptfc_slave_alloc(struct scsi_device *sdev);
98 static int mptfc_qcmd(struct scsi_cmnd *SCpnt,
99 void (*done)(struct scsi_cmnd *));
100 static void mptfc_target_destroy(struct scsi_target *starget);
101 static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
102 static void __devexit mptfc_remove(struct pci_dev *pdev);
103
104 static struct scsi_host_template mptfc_driver_template = {
105 .module = THIS_MODULE,
106 .proc_name = "mptfc",
107 .proc_info = mptscsih_proc_info,
108 .name = "MPT FC Host",
109 .info = mptscsih_info,
110 .queuecommand = mptfc_qcmd,
111 .target_alloc = mptfc_target_alloc,
112 .slave_alloc = mptfc_slave_alloc,
113 .slave_configure = mptscsih_slave_configure,
114 .target_destroy = mptfc_target_destroy,
115 .slave_destroy = mptscsih_slave_destroy,
116 .change_queue_depth = mptscsih_change_queue_depth,
117 .eh_abort_handler = mptscsih_abort,
118 .eh_device_reset_handler = mptscsih_dev_reset,
119 .eh_bus_reset_handler = mptscsih_bus_reset,
120 .eh_host_reset_handler = mptscsih_host_reset,
121 .bios_param = mptscsih_bios_param,
122 .can_queue = MPT_FC_CAN_QUEUE,
123 .this_id = -1,
124 .sg_tablesize = MPT_SCSI_SG_DEPTH,
125 .max_sectors = 8192,
126 .cmd_per_lun = 7,
127 .use_clustering = ENABLE_CLUSTERING,
128 };
129
130 /****************************************************************************
131 * Supported hardware
132 */
133
134 static struct pci_device_id mptfc_pci_table[] = {
135 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
136 PCI_ANY_ID, PCI_ANY_ID },
137 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
138 PCI_ANY_ID, PCI_ANY_ID },
139 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
140 PCI_ANY_ID, PCI_ANY_ID },
141 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
142 PCI_ANY_ID, PCI_ANY_ID },
143 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
144 PCI_ANY_ID, PCI_ANY_ID },
145 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
146 PCI_ANY_ID, PCI_ANY_ID },
147 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
148 PCI_ANY_ID, PCI_ANY_ID },
149 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949ES,
150 PCI_ANY_ID, PCI_ANY_ID },
151 {0} /* Terminating entry */
152 };
153 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
154
155 static struct scsi_transport_template *mptfc_transport_template = NULL;
156
157 static struct fc_function_template mptfc_transport_functions = {
158 .dd_fcrport_size = 8,
159 .show_host_node_name = 1,
160 .show_host_port_name = 1,
161 .show_host_supported_classes = 1,
162 .show_host_port_id = 1,
163 .show_rport_supported_classes = 1,
164 .show_starget_node_name = 1,
165 .show_starget_port_name = 1,
166 .show_starget_port_id = 1,
167 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
168 .show_rport_dev_loss_tmo = 1,
169
170 };
171
172 static void
173 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
174 {
175 if (timeout > 0)
176 rport->dev_loss_tmo = timeout;
177 else
178 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
179 }
180
181 static int
182 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
183 {
184 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
185 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
186
187 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
188 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
189 return 0;
190 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
191 return -1;
192 return 1;
193 }
194 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
195 return -1;
196 return 1;
197 }
198
199 static int
200 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
201 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
202 {
203 ConfigPageHeader_t hdr;
204 CONFIGPARMS cfg;
205 FCDevicePage0_t *ppage0_alloc, *fc;
206 dma_addr_t page0_dma;
207 int data_sz;
208 int ii;
209
210 FCDevicePage0_t *p0_array=NULL, *p_p0;
211 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
212
213 int rc = -ENOMEM;
214 U32 port_id = 0xffffff;
215 int num_targ = 0;
216 int max_bus = ioc->facts.MaxBuses;
217 int max_targ = ioc->facts.MaxDevices;
218
219 if (max_bus == 0 || max_targ == 0)
220 goto out;
221
222 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
223 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
224 if (!p0_array)
225 goto out;
226
227 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
228 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
229 if (!pp0_array)
230 goto out;
231
232 do {
233 /* Get FC Device Page 0 header */
234 hdr.PageVersion = 0;
235 hdr.PageLength = 0;
236 hdr.PageNumber = 0;
237 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
238 cfg.cfghdr.hdr = &hdr;
239 cfg.physAddr = -1;
240 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
241 cfg.dir = 0;
242 cfg.pageAddr = port_id;
243 cfg.timeout = 0;
244
245 if ((rc = mpt_config(ioc, &cfg)) != 0)
246 break;
247
248 if (hdr.PageLength <= 0)
249 break;
250
251 data_sz = hdr.PageLength * 4;
252 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
253 &page0_dma);
254 rc = -ENOMEM;
255 if (!ppage0_alloc)
256 break;
257
258 cfg.physAddr = page0_dma;
259 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
260
261 if ((rc = mpt_config(ioc, &cfg)) == 0) {
262 ppage0_alloc->PortIdentifier =
263 le32_to_cpu(ppage0_alloc->PortIdentifier);
264
265 ppage0_alloc->WWNN.Low =
266 le32_to_cpu(ppage0_alloc->WWNN.Low);
267
268 ppage0_alloc->WWNN.High =
269 le32_to_cpu(ppage0_alloc->WWNN.High);
270
271 ppage0_alloc->WWPN.Low =
272 le32_to_cpu(ppage0_alloc->WWPN.Low);
273
274 ppage0_alloc->WWPN.High =
275 le32_to_cpu(ppage0_alloc->WWPN.High);
276
277 ppage0_alloc->BBCredit =
278 le16_to_cpu(ppage0_alloc->BBCredit);
279
280 ppage0_alloc->MaxRxFrameSize =
281 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
282
283 port_id = ppage0_alloc->PortIdentifier;
284 num_targ++;
285 *p_p0 = *ppage0_alloc; /* save data */
286 *p_pp0++ = p_p0++; /* save addr */
287 }
288 pci_free_consistent(ioc->pcidev, data_sz,
289 (u8 *) ppage0_alloc, page0_dma);
290 if (rc != 0)
291 break;
292
293 } while (port_id <= 0xff0000);
294
295 if (num_targ) {
296 /* sort array */
297 if (num_targ > 1)
298 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
299 mptfc_FcDevPage0_cmp_func, NULL);
300 /* call caller's func for each targ */
301 for (ii = 0; ii < num_targ; ii++) {
302 fc = *(pp0_array+ii);
303 func(ioc, ioc_port, fc);
304 }
305 }
306
307 out:
308 if (pp0_array)
309 kfree(pp0_array);
310 if (p0_array)
311 kfree(p0_array);
312 return rc;
313 }
314
315 static int
316 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
317 {
318 /* not currently usable */
319 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
320 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
321 return -1;
322
323 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
324 return -1;
325
326 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
327 return -1;
328
329 /*
330 * board data structure already normalized to platform endianness
331 * shifted to avoid unaligned access on 64 bit architecture
332 */
333 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
334 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
335 rid->port_id = pg0->PortIdentifier;
336 rid->roles = FC_RPORT_ROLE_UNKNOWN;
337
338 return 0;
339 }
340
341 static void
342 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
343 {
344 struct fc_rport_identifiers rport_ids;
345 struct fc_rport *rport;
346 struct mptfc_rport_info *ri;
347 int new_ri = 1;
348 u64 pn, nn;
349 VirtTarget *vtarget;
350 u32 roles = FC_RPORT_ROLE_UNKNOWN;
351
352 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
353 return;
354
355 roles |= FC_RPORT_ROLE_FCP_TARGET;
356 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
357 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
358
359 /* scan list looking for a match */
360 list_for_each_entry(ri, &ioc->fc_rports, list) {
361 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
362 if (pn == rport_ids.port_name) { /* match */
363 list_move_tail(&ri->list, &ioc->fc_rports);
364 new_ri = 0;
365 break;
366 }
367 }
368 if (new_ri) { /* allocate one */
369 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
370 if (!ri)
371 return;
372 list_add_tail(&ri->list, &ioc->fc_rports);
373 }
374
375 ri->pg0 = *pg0; /* add/update pg0 data */
376 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
377
378 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
379 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
380 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
381 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
382 if (rport) {
383 ri->rport = rport;
384 if (new_ri) /* may have been reset by user */
385 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
386 /*
387 * if already mapped, remap here. If not mapped,
388 * target_alloc will allocate vtarget and map,
389 * slave_alloc will fill in vdev from vtarget.
390 */
391 if (ri->starget) {
392 vtarget = ri->starget->hostdata;
393 if (vtarget) {
394 vtarget->target_id = pg0->CurrentTargetID;
395 vtarget->bus_id = pg0->CurrentBus;
396 }
397 }
398 *((struct mptfc_rport_info **)rport->dd_data) = ri;
399 /* scan will be scheduled once rport becomes a target */
400 fc_remote_port_rolechg(rport,roles);
401
402 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
403 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
404 dfcprintk ((MYIOC_s_INFO_FMT
405 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
406 "rport tid %d, tmo %d\n",
407 ioc->name,
408 ioc->sh->host_no,
409 pg0->PortIdentifier,
410 (unsigned long long)nn,
411 (unsigned long long)pn,
412 pg0->CurrentTargetID,
413 ri->rport->scsi_target_id,
414 ri->rport->dev_loss_tmo));
415 } else {
416 list_del(&ri->list);
417 kfree(ri);
418 ri = NULL;
419 }
420 }
421 }
422
423 /*
424 * OS entry point to allow for host driver to free allocated memory
425 * Called if no device present or device being unloaded
426 */
427 static void
428 mptfc_target_destroy(struct scsi_target *starget)
429 {
430 struct fc_rport *rport;
431 struct mptfc_rport_info *ri;
432
433 rport = starget_to_rport(starget);
434 if (rport) {
435 ri = *((struct mptfc_rport_info **)rport->dd_data);
436 if (ri) /* better be! */
437 ri->starget = NULL;
438 }
439 if (starget->hostdata)
440 kfree(starget->hostdata);
441 starget->hostdata = NULL;
442 }
443
444 /*
445 * OS entry point to allow host driver to alloc memory
446 * for each scsi target. Called once per device the bus scan.
447 * Return non-zero if allocation fails.
448 */
449 static int
450 mptfc_target_alloc(struct scsi_target *starget)
451 {
452 VirtTarget *vtarget;
453 struct fc_rport *rport;
454 struct mptfc_rport_info *ri;
455 int rc;
456
457 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
458 if (!vtarget)
459 return -ENOMEM;
460 starget->hostdata = vtarget;
461
462 rc = -ENODEV;
463 rport = starget_to_rport(starget);
464 if (rport) {
465 ri = *((struct mptfc_rport_info **)rport->dd_data);
466 if (ri) { /* better be! */
467 vtarget->target_id = ri->pg0.CurrentTargetID;
468 vtarget->bus_id = ri->pg0.CurrentBus;
469 ri->starget = starget;
470 rc = 0;
471 }
472 }
473 if (rc != 0) {
474 kfree(vtarget);
475 starget->hostdata = NULL;
476 }
477
478 return rc;
479 }
480
481 /*
482 * OS entry point to allow host driver to alloc memory
483 * for each scsi device. Called once per device the bus scan.
484 * Return non-zero if allocation fails.
485 * Init memory once per LUN.
486 */
487 static int
488 mptfc_slave_alloc(struct scsi_device *sdev)
489 {
490 MPT_SCSI_HOST *hd;
491 VirtTarget *vtarget;
492 VirtDevice *vdev;
493 struct scsi_target *starget;
494 struct fc_rport *rport;
495
496
497 starget = scsi_target(sdev);
498 rport = starget_to_rport(starget);
499
500 if (!rport || fc_remote_port_chkready(rport))
501 return -ENXIO;
502
503 hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
504
505 vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
506 if (!vdev) {
507 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
508 hd->ioc->name, sizeof(VirtDevice));
509 return -ENOMEM;
510 }
511
512
513 sdev->hostdata = vdev;
514 vtarget = starget->hostdata;
515
516 if (vtarget->num_luns == 0) {
517 vtarget->ioc_id = hd->ioc->id;
518 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES |
519 MPT_TARGET_FLAGS_VALID_INQUIRY;
520 hd->Targets[sdev->id] = vtarget;
521 }
522
523 vdev->vtarget = vtarget;
524 vdev->lun = sdev->lun;
525
526 vtarget->num_luns++;
527
528
529 #ifdef DMPT_DEBUG_FC
530 {
531 u64 nn, pn;
532 struct mptfc_rport_info *ri;
533 ri = *((struct mptfc_rport_info **)rport->dd_data);
534 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
535 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
536 dfcprintk ((MYIOC_s_INFO_FMT
537 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
538 "CurrentTargetID %d, %x %llx %llx\n",
539 hd->ioc->name,
540 sdev->host->host_no,
541 vtarget->num_luns,
542 sdev->id, ri->pg0.CurrentTargetID,
543 ri->pg0.PortIdentifier,
544 (unsigned long long)pn,
545 (unsigned long long)nn));
546 }
547 #endif
548
549 return 0;
550 }
551
552 static int
553 mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
554 {
555 struct mptfc_rport_info *ri;
556 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
557 int err;
558
559 err = fc_remote_port_chkready(rport);
560 if (unlikely(err)) {
561 SCpnt->result = err;
562 done(SCpnt);
563 return 0;
564 }
565
566 /* dd_data is null until finished adding target */
567 ri = *((struct mptfc_rport_info **)rport->dd_data);
568 if (unlikely(!ri)) {
569 dfcprintk ((MYIOC_s_INFO_FMT
570 "mptfc_qcmd.%d: %d:%d, dd_data is null.\n",
571 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
572 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
573 SCpnt->device->id,SCpnt->device->lun));
574 SCpnt->result = DID_IMM_RETRY << 16;
575 done(SCpnt);
576 return 0;
577 }
578
579 err = mptscsih_qcmd(SCpnt,done);
580 #ifdef DMPT_DEBUG_FC
581 if (unlikely(err)) {
582 dfcprintk ((MYIOC_s_INFO_FMT
583 "mptfc_qcmd.%d: %d:%d, mptscsih_qcmd returns non-zero, (%x).\n",
584 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
585 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
586 SCpnt->device->id,SCpnt->device->lun,err));
587 }
588 #endif
589 return err;
590 }
591
592 /*
593 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
594 * @ioc: Pointer to MPT_ADAPTER structure
595 * @portnum: IOC Port number
596 *
597 * Return: 0 for success
598 * -ENOMEM if no memory available
599 * -EPERM if not allowed due to ISR context
600 * -EAGAIN if no msg frames currently available
601 * -EFAULT for non-successful reply or no reply (timeout)
602 * -EINVAL portnum arg out of range (hardwired to two elements)
603 */
604 static int
605 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
606 {
607 ConfigPageHeader_t hdr;
608 CONFIGPARMS cfg;
609 FCPortPage0_t *ppage0_alloc;
610 FCPortPage0_t *pp0dest;
611 dma_addr_t page0_dma;
612 int data_sz;
613 int copy_sz;
614 int rc;
615 int count = 400;
616
617 if (portnum > 1)
618 return -EINVAL;
619
620 /* Get FCPort Page 0 header */
621 hdr.PageVersion = 0;
622 hdr.PageLength = 0;
623 hdr.PageNumber = 0;
624 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
625 cfg.cfghdr.hdr = &hdr;
626 cfg.physAddr = -1;
627 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
628 cfg.dir = 0;
629 cfg.pageAddr = portnum;
630 cfg.timeout = 0;
631
632 if ((rc = mpt_config(ioc, &cfg)) != 0)
633 return rc;
634
635 if (hdr.PageLength == 0)
636 return 0;
637
638 data_sz = hdr.PageLength * 4;
639 rc = -ENOMEM;
640 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
641 if (ppage0_alloc) {
642
643 try_again:
644 memset((u8 *)ppage0_alloc, 0, data_sz);
645 cfg.physAddr = page0_dma;
646 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
647
648 if ((rc = mpt_config(ioc, &cfg)) == 0) {
649 /* save the data */
650 pp0dest = &ioc->fc_port_page0[portnum];
651 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
652 memcpy(pp0dest, ppage0_alloc, copy_sz);
653
654 /*
655 * Normalize endianness of structure data,
656 * by byte-swapping all > 1 byte fields!
657 */
658 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
659 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
660 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
661 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
662 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
663 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
664 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
665 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
666 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
667 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
668 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
669 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
670 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
671 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
672 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
673 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
674
675 /*
676 * if still doing discovery,
677 * hang loose a while until finished
678 */
679 if (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) {
680 if (count-- > 0) {
681 msleep(100);
682 goto try_again;
683 }
684 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
685 " complete.\n",
686 ioc->name);
687 }
688 }
689
690 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
691 }
692
693 return rc;
694 }
695
696 static int
697 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
698 {
699 ConfigPageHeader_t hdr;
700 CONFIGPARMS cfg;
701 int rc;
702
703 if (portnum > 1)
704 return -EINVAL;
705
706 if (!(ioc->fc_data.fc_port_page1[portnum].data))
707 return -EINVAL;
708
709 /* get fcport page 1 header */
710 hdr.PageVersion = 0;
711 hdr.PageLength = 0;
712 hdr.PageNumber = 1;
713 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
714 cfg.cfghdr.hdr = &hdr;
715 cfg.physAddr = -1;
716 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
717 cfg.dir = 0;
718 cfg.pageAddr = portnum;
719 cfg.timeout = 0;
720
721 if ((rc = mpt_config(ioc, &cfg)) != 0)
722 return rc;
723
724 if (hdr.PageLength == 0)
725 return -ENODEV;
726
727 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
728 return -EINVAL;
729
730 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
731 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
732 cfg.dir = 1;
733
734 rc = mpt_config(ioc, &cfg);
735
736 return rc;
737 }
738
739 static int
740 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
741 {
742 ConfigPageHeader_t hdr;
743 CONFIGPARMS cfg;
744 FCPortPage1_t *page1_alloc;
745 dma_addr_t page1_dma;
746 int data_sz;
747 int rc;
748
749 if (portnum > 1)
750 return -EINVAL;
751
752 /* get fcport page 1 header */
753 hdr.PageVersion = 0;
754 hdr.PageLength = 0;
755 hdr.PageNumber = 1;
756 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
757 cfg.cfghdr.hdr = &hdr;
758 cfg.physAddr = -1;
759 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
760 cfg.dir = 0;
761 cfg.pageAddr = portnum;
762 cfg.timeout = 0;
763
764 if ((rc = mpt_config(ioc, &cfg)) != 0)
765 return rc;
766
767 if (hdr.PageLength == 0)
768 return -ENODEV;
769
770 start_over:
771
772 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
773 data_sz = hdr.PageLength * 4;
774 if (data_sz < sizeof(FCPortPage1_t))
775 data_sz = sizeof(FCPortPage1_t);
776
777 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
778 data_sz,
779 &page1_dma);
780 if (!page1_alloc)
781 return -ENOMEM;
782 }
783 else {
784 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
785 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
786 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
787 if (hdr.PageLength * 4 > data_sz) {
788 ioc->fc_data.fc_port_page1[portnum].data = NULL;
789 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
790 page1_alloc, page1_dma);
791 goto start_over;
792 }
793 }
794
795 memset(page1_alloc,0,data_sz);
796
797 cfg.physAddr = page1_dma;
798 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
799
800 if ((rc = mpt_config(ioc, &cfg)) == 0) {
801 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
802 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
803 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
804 }
805 else {
806 ioc->fc_data.fc_port_page1[portnum].data = NULL;
807 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
808 page1_alloc, page1_dma);
809 }
810
811 return rc;
812 }
813
814 static void
815 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
816 {
817 int ii;
818 FCPortPage1_t *pp1;
819
820 #define MPTFC_FW_DEVICE_TIMEOUT (1)
821 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
822 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
823 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
824
825 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
826 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
827 continue;
828 pp1 = ioc->fc_data.fc_port_page1[ii].data;
829 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
830 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
831 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
832 && ((pp1->Flags & OFF_FLAGS) == 0))
833 continue;
834 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
835 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
836 pp1->Flags &= ~OFF_FLAGS;
837 pp1->Flags |= ON_FLAGS;
838 mptfc_WriteFcPortPage1(ioc, ii);
839 }
840 }
841
842
843 static void
844 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
845 {
846 unsigned class = 0, cos = 0;
847
848 /* don't know what to do as only one scsi (fc) host was allocated */
849 if (portnum != 0)
850 return;
851
852 class = ioc->fc_port_page0[portnum].SupportedServiceClass;
853 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
854 cos |= FC_COS_CLASS1;
855 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
856 cos |= FC_COS_CLASS2;
857 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
858 cos |= FC_COS_CLASS3;
859
860 fc_host_node_name(ioc->sh) =
861 (u64)ioc->fc_port_page0[portnum].WWNN.High << 32
862 | (u64)ioc->fc_port_page0[portnum].WWNN.Low;
863
864 fc_host_port_name(ioc->sh) =
865 (u64)ioc->fc_port_page0[portnum].WWPN.High << 32
866 | (u64)ioc->fc_port_page0[portnum].WWPN.Low;
867
868 fc_host_port_id(ioc->sh) = ioc->fc_port_page0[portnum].PortIdentifier;
869
870 fc_host_supported_classes(ioc->sh) = cos;
871
872 fc_host_tgtid_bind_type(ioc->sh) = FC_TGTID_BIND_BY_WWPN;
873 }
874
875 static void
876 mptfc_setup_reset(void *arg)
877 {
878 MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
879 u64 pn;
880 struct mptfc_rport_info *ri;
881
882 /* reset about to happen, delete (block) all rports */
883 list_for_each_entry(ri, &ioc->fc_rports, list) {
884 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
885 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
886 fc_remote_port_delete(ri->rport); /* won't sleep */
887 ri->rport = NULL;
888
889 pn = (u64)ri->pg0.WWPN.High << 32 |
890 (u64)ri->pg0.WWPN.Low;
891 dfcprintk ((MYIOC_s_INFO_FMT
892 "mptfc_setup_reset.%d: %llx deleted\n",
893 ioc->name,
894 ioc->sh->host_no,
895 (unsigned long long)pn));
896 }
897 }
898 }
899
900 static void
901 mptfc_rescan_devices(void *arg)
902 {
903 MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
904 int ii;
905 int work_to_do;
906 u64 pn;
907 unsigned long flags;
908 struct mptfc_rport_info *ri;
909
910 do {
911 /* start by tagging all ports as missing */
912 list_for_each_entry(ri, &ioc->fc_rports, list) {
913 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
914 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
915 }
916 }
917
918 /*
919 * now rescan devices known to adapter,
920 * will reregister existing rports
921 */
922 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
923 (void) mptfc_GetFcPortPage0(ioc, ii);
924 mptfc_init_host_attr(ioc,ii); /* refresh */
925 mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
926 }
927
928 /* delete devices still missing */
929 list_for_each_entry(ri, &ioc->fc_rports, list) {
930 /* if newly missing, delete it */
931 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
932
933 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
934 MPT_RPORT_INFO_FLAGS_MISSING);
935 fc_remote_port_delete(ri->rport); /* won't sleep */
936 ri->rport = NULL;
937
938 pn = (u64)ri->pg0.WWPN.High << 32 |
939 (u64)ri->pg0.WWPN.Low;
940 dfcprintk ((MYIOC_s_INFO_FMT
941 "mptfc_rescan.%d: %llx deleted\n",
942 ioc->name,
943 ioc->sh->host_no,
944 (unsigned long long)pn));
945 }
946 }
947
948 /*
949 * allow multiple passes as target state
950 * might have changed during scan
951 */
952 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
953 if (ioc->fc_rescan_work_count > 2) /* only need one more */
954 ioc->fc_rescan_work_count = 2;
955 work_to_do = --ioc->fc_rescan_work_count;
956 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
957 } while (work_to_do);
958 }
959
960 static int
961 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
962 {
963 struct Scsi_Host *sh;
964 MPT_SCSI_HOST *hd;
965 MPT_ADAPTER *ioc;
966 unsigned long flags;
967 int ii;
968 int numSGE = 0;
969 int scale;
970 int ioc_cap;
971 int error=0;
972 int r;
973
974 if ((r = mpt_attach(pdev,id)) != 0)
975 return r;
976
977 ioc = pci_get_drvdata(pdev);
978 ioc->DoneCtx = mptfcDoneCtx;
979 ioc->TaskCtx = mptfcTaskCtx;
980 ioc->InternalCtx = mptfcInternalCtx;
981
982 /* Added sanity check on readiness of the MPT adapter.
983 */
984 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
985 printk(MYIOC_s_WARN_FMT
986 "Skipping because it's not operational!\n",
987 ioc->name);
988 error = -ENODEV;
989 goto out_mptfc_probe;
990 }
991
992 if (!ioc->active) {
993 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
994 ioc->name);
995 error = -ENODEV;
996 goto out_mptfc_probe;
997 }
998
999 /* Sanity check - ensure at least 1 port is INITIATOR capable
1000 */
1001 ioc_cap = 0;
1002 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1003 if (ioc->pfacts[ii].ProtocolFlags &
1004 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1005 ioc_cap ++;
1006 }
1007
1008 if (!ioc_cap) {
1009 printk(MYIOC_s_WARN_FMT
1010 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1011 ioc->name, ioc);
1012 return -ENODEV;
1013 }
1014
1015 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1016
1017 if (!sh) {
1018 printk(MYIOC_s_WARN_FMT
1019 "Unable to register controller with SCSI subsystem\n",
1020 ioc->name);
1021 error = -1;
1022 goto out_mptfc_probe;
1023 }
1024
1025 spin_lock_init(&ioc->fc_rescan_work_lock);
1026 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc);
1027 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset, (void *)ioc);
1028
1029 spin_lock_irqsave(&ioc->FreeQlock, flags);
1030
1031 /* Attach the SCSI Host to the IOC structure
1032 */
1033 ioc->sh = sh;
1034
1035 sh->io_port = 0;
1036 sh->n_io_port = 0;
1037 sh->irq = 0;
1038
1039 /* set 16 byte cdb's */
1040 sh->max_cmd_len = 16;
1041
1042 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
1043
1044 sh->max_lun = MPT_LAST_LUN + 1;
1045 sh->max_channel = 0;
1046 sh->this_id = ioc->pfacts[0].PortSCSIID;
1047
1048 /* Required entry.
1049 */
1050 sh->unique_id = ioc->id;
1051
1052 /* Verify that we won't exceed the maximum
1053 * number of chain buffers
1054 * We can optimize: ZZ = req_sz/sizeof(SGE)
1055 * For 32bit SGE's:
1056 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1057 * + (req_sz - 64)/sizeof(SGE)
1058 * A slightly different algorithm is required for
1059 * 64bit SGEs.
1060 */
1061 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
1062 if (sizeof(dma_addr_t) == sizeof(u64)) {
1063 numSGE = (scale - 1) *
1064 (ioc->facts.MaxChainDepth-1) + scale +
1065 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
1066 sizeof(u32));
1067 } else {
1068 numSGE = 1 + (scale - 1) *
1069 (ioc->facts.MaxChainDepth-1) + scale +
1070 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
1071 sizeof(u32));
1072 }
1073
1074 if (numSGE < sh->sg_tablesize) {
1075 /* Reset this value */
1076 dprintk((MYIOC_s_INFO_FMT
1077 "Resetting sg_tablesize to %d from %d\n",
1078 ioc->name, numSGE, sh->sg_tablesize));
1079 sh->sg_tablesize = numSGE;
1080 }
1081
1082 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1083
1084 hd = (MPT_SCSI_HOST *) sh->hostdata;
1085 hd->ioc = ioc;
1086
1087 /* SCSI needs scsi_cmnd lookup table!
1088 * (with size equal to req_depth*PtrSz!)
1089 */
1090 hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1091 if (!hd->ScsiLookup) {
1092 error = -ENOMEM;
1093 goto out_mptfc_probe;
1094 }
1095
1096 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
1097 ioc->name, hd->ScsiLookup));
1098
1099 /* Allocate memory for the device structures.
1100 * A non-Null pointer at an offset
1101 * indicates a device exists.
1102 * max_id = 1 + maximum id (hosts.h)
1103 */
1104 hd->Targets = kcalloc(sh->max_id, sizeof(void *), GFP_ATOMIC);
1105 if (!hd->Targets) {
1106 error = -ENOMEM;
1107 goto out_mptfc_probe;
1108 }
1109
1110 dprintk((KERN_INFO " vdev @ %p\n", hd->Targets));
1111
1112 /* Clear the TM flags
1113 */
1114 hd->tmPending = 0;
1115 hd->tmState = TM_STATE_NONE;
1116 hd->resetPending = 0;
1117 hd->abortSCpnt = NULL;
1118
1119 /* Clear the pointer used to store
1120 * single-threaded commands, i.e., those
1121 * issued during a bus scan, dv and
1122 * configuration pages.
1123 */
1124 hd->cmdPtr = NULL;
1125
1126 /* Initialize this SCSI Hosts' timers
1127 * To use, set the timer expires field
1128 * and add_timer
1129 */
1130 init_timer(&hd->timer);
1131 hd->timer.data = (unsigned long) hd;
1132 hd->timer.function = mptscsih_timer_expired;
1133
1134 hd->mpt_pq_filter = mpt_pq_filter;
1135
1136 ddvprintk((MYIOC_s_INFO_FMT
1137 "mpt_pq_filter %x\n",
1138 ioc->name,
1139 mpt_pq_filter));
1140
1141 init_waitqueue_head(&hd->scandv_waitq);
1142 hd->scandv_wait_done = 0;
1143 hd->last_queue_full = 0;
1144
1145 sh->transportt = mptfc_transport_template;
1146 error = scsi_add_host (sh, &ioc->pcidev->dev);
1147 if(error) {
1148 dprintk((KERN_ERR MYNAM
1149 "scsi_add_host failed\n"));
1150 goto out_mptfc_probe;
1151 }
1152
1153 /* initialize workqueue */
1154
1155 snprintf(ioc->fc_rescan_work_q_name, KOBJ_NAME_LEN, "mptfc_wq_%d",
1156 sh->host_no);
1157 ioc->fc_rescan_work_q =
1158 create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
1159 if (!ioc->fc_rescan_work_q)
1160 goto out_mptfc_probe;
1161
1162 /*
1163 * Pre-fetch FC port WWN and stuff...
1164 * (FCPortPage0_t stuff)
1165 */
1166 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1167 (void) mptfc_GetFcPortPage0(ioc, ii);
1168 }
1169 mptfc_SetFcPortPage1_defaults(ioc);
1170
1171 /*
1172 * scan for rports -
1173 * by doing it via the workqueue, some locking is eliminated
1174 */
1175
1176 ioc->fc_rescan_work_count = 1;
1177 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1178 flush_workqueue(ioc->fc_rescan_work_q);
1179
1180 return 0;
1181
1182 out_mptfc_probe:
1183
1184 mptscsih_remove(pdev);
1185 return error;
1186 }
1187
1188 static struct pci_driver mptfc_driver = {
1189 .name = "mptfc",
1190 .id_table = mptfc_pci_table,
1191 .probe = mptfc_probe,
1192 .remove = __devexit_p(mptfc_remove),
1193 .shutdown = mptscsih_shutdown,
1194 #ifdef CONFIG_PM
1195 .suspend = mptscsih_suspend,
1196 .resume = mptscsih_resume,
1197 #endif
1198 };
1199
1200 static int
1201 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1202 {
1203 MPT_SCSI_HOST *hd;
1204 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1205 unsigned long flags;
1206 int rc=1;
1207
1208 devtverboseprintk((MYIOC_s_INFO_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1209 ioc->name, event));
1210
1211 if (ioc->sh == NULL ||
1212 ((hd = (MPT_SCSI_HOST *)ioc->sh->hostdata) == NULL))
1213 return 1;
1214
1215 switch (event) {
1216 case MPI_EVENT_RESCAN:
1217 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1218 if (ioc->fc_rescan_work_q) {
1219 if (ioc->fc_rescan_work_count++ == 0) {
1220 queue_work(ioc->fc_rescan_work_q,
1221 &ioc->fc_rescan_work);
1222 }
1223 }
1224 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1225 break;
1226 default:
1227 rc = mptscsih_event_process(ioc,pEvReply);
1228 break;
1229 }
1230 return rc;
1231 }
1232
1233 static int
1234 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1235 {
1236 int rc;
1237 unsigned long flags;
1238
1239 rc = mptscsih_ioc_reset(ioc,reset_phase);
1240 if (rc == 0)
1241 return rc;
1242
1243
1244 dtmprintk((KERN_WARNING MYNAM
1245 ": IOC %s_reset routed to FC host driver!\n",
1246 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1247 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1248
1249 if (reset_phase == MPT_IOC_SETUP_RESET) {
1250 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1251 if (ioc->fc_rescan_work_q) {
1252 queue_work(ioc->fc_rescan_work_q,
1253 &ioc->fc_setup_reset_work);
1254 }
1255 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1256 }
1257
1258 else if (reset_phase == MPT_IOC_PRE_RESET) {
1259 }
1260
1261 else { /* MPT_IOC_POST_RESET */
1262 mptfc_SetFcPortPage1_defaults(ioc);
1263 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1264 if (ioc->fc_rescan_work_q) {
1265 if (ioc->fc_rescan_work_count++ == 0) {
1266 queue_work(ioc->fc_rescan_work_q,
1267 &ioc->fc_rescan_work);
1268 }
1269 }
1270 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1271 }
1272 return 1;
1273 }
1274
1275 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1276 /**
1277 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
1278 * linux scsi mid-layer.
1279 *
1280 * Returns 0 for success, non-zero for failure.
1281 */
1282 static int __init
1283 mptfc_init(void)
1284 {
1285 int error;
1286
1287 show_mptmod_ver(my_NAME, my_VERSION);
1288
1289 /* sanity check module parameters */
1290 if (mptfc_dev_loss_tmo <= 0)
1291 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1292
1293 mptfc_transport_template =
1294 fc_attach_transport(&mptfc_transport_functions);
1295
1296 if (!mptfc_transport_template)
1297 return -ENODEV;
1298
1299 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
1300 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
1301 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
1302
1303 if (mpt_event_register(mptfcDoneCtx, mptfc_event_process) == 0) {
1304 devtverboseprintk((KERN_INFO MYNAM
1305 ": Registered for IOC event notifications\n"));
1306 }
1307
1308 if (mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset) == 0) {
1309 dprintk((KERN_INFO MYNAM
1310 ": Registered for IOC reset notifications\n"));
1311 }
1312
1313 error = pci_register_driver(&mptfc_driver);
1314 if (error)
1315 fc_release_transport(mptfc_transport_template);
1316
1317 return error;
1318 }
1319
1320 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1321 /**
1322 * mptfc_remove - Removed fc infrastructure for devices
1323 * @pdev: Pointer to pci_dev structure
1324 *
1325 */
1326 static void __devexit
1327 mptfc_remove(struct pci_dev *pdev)
1328 {
1329 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1330 struct mptfc_rport_info *p, *n;
1331 struct workqueue_struct *work_q;
1332 unsigned long flags;
1333 int ii;
1334
1335 /* destroy workqueue */
1336 if ((work_q=ioc->fc_rescan_work_q)) {
1337 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1338 ioc->fc_rescan_work_q = NULL;
1339 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1340 destroy_workqueue(work_q);
1341 }
1342
1343 fc_remove_host(ioc->sh);
1344
1345 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1346 list_del(&p->list);
1347 kfree(p);
1348 }
1349
1350 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1351 if (ioc->fc_data.fc_port_page1[ii].data) {
1352 pci_free_consistent(ioc->pcidev,
1353 ioc->fc_data.fc_port_page1[ii].pg_sz,
1354 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1355 ioc->fc_data.fc_port_page1[ii].dma);
1356 ioc->fc_data.fc_port_page1[ii].data = NULL;
1357 }
1358 }
1359
1360 mptscsih_remove(pdev);
1361 }
1362
1363 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1364 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1365 /**
1366 * mptfc_exit - Unregisters MPT adapter(s)
1367 *
1368 */
1369 static void __exit
1370 mptfc_exit(void)
1371 {
1372 pci_unregister_driver(&mptfc_driver);
1373 fc_release_transport(mptfc_transport_template);
1374
1375 mpt_reset_deregister(mptfcDoneCtx);
1376 dprintk((KERN_INFO MYNAM
1377 ": Deregistered for IOC reset notifications\n"));
1378
1379 mpt_event_deregister(mptfcDoneCtx);
1380 dprintk((KERN_INFO MYNAM
1381 ": Deregistered for IOC event notifications\n"));
1382
1383 mpt_deregister(mptfcInternalCtx);
1384 mpt_deregister(mptfcTaskCtx);
1385 mpt_deregister(mptfcDoneCtx);
1386 }
1387
1388 module_init(mptfc_init);
1389 module_exit(mptfc_exit);
Linux kernel - Deliverables
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