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[SCSI] mptfc: properly wait for firmware target discovery to complete
[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 #define MPTFC_DEV_LOSS_TMO (60)
81 static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO; /* reasonable default */
82 module_param(mptfc_dev_loss_tmo, int, 0);
83 MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
84 " transport to wait for an rport to "
85 " return following a device loss event."
86 " Default=60.");
87
88 static int mptfcDoneCtx = -1;
89 static int mptfcTaskCtx = -1;
90 static int mptfcInternalCtx = -1; /* Used only for internal commands */
91
92 static int mptfc_target_alloc(struct scsi_target *starget);
93 static int mptfc_slave_alloc(struct scsi_device *sdev);
94 static int mptfc_qcmd(struct scsi_cmnd *SCpnt,
95 void (*done)(struct scsi_cmnd *));
96 static void mptfc_target_destroy(struct scsi_target *starget);
97 static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
98 static void __devexit mptfc_remove(struct pci_dev *pdev);
99
100 static struct scsi_host_template mptfc_driver_template = {
101 .module = THIS_MODULE,
102 .proc_name = "mptfc",
103 .proc_info = mptscsih_proc_info,
104 .name = "MPT FC Host",
105 .info = mptscsih_info,
106 .queuecommand = mptfc_qcmd,
107 .target_alloc = mptfc_target_alloc,
108 .slave_alloc = mptfc_slave_alloc,
109 .slave_configure = mptscsih_slave_configure,
110 .target_destroy = mptfc_target_destroy,
111 .slave_destroy = mptscsih_slave_destroy,
112 .change_queue_depth = mptscsih_change_queue_depth,
113 .eh_abort_handler = mptscsih_abort,
114 .eh_device_reset_handler = mptscsih_dev_reset,
115 .eh_bus_reset_handler = mptscsih_bus_reset,
116 .eh_host_reset_handler = mptscsih_host_reset,
117 .bios_param = mptscsih_bios_param,
118 .can_queue = MPT_FC_CAN_QUEUE,
119 .this_id = -1,
120 .sg_tablesize = MPT_SCSI_SG_DEPTH,
121 .max_sectors = 8192,
122 .cmd_per_lun = 7,
123 .use_clustering = ENABLE_CLUSTERING,
124 };
125
126 /****************************************************************************
127 * Supported hardware
128 */
129
130 static struct pci_device_id mptfc_pci_table[] = {
131 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
132 PCI_ANY_ID, PCI_ANY_ID },
133 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
134 PCI_ANY_ID, PCI_ANY_ID },
135 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
136 PCI_ANY_ID, PCI_ANY_ID },
137 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
138 PCI_ANY_ID, PCI_ANY_ID },
139 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
140 PCI_ANY_ID, PCI_ANY_ID },
141 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
142 PCI_ANY_ID, PCI_ANY_ID },
143 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
144 PCI_ANY_ID, PCI_ANY_ID },
145 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
146 PCI_ANY_ID, PCI_ANY_ID },
147 {0} /* Terminating entry */
148 };
149 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
150
151 static struct scsi_transport_template *mptfc_transport_template = NULL;
152
153 static struct fc_function_template mptfc_transport_functions = {
154 .dd_fcrport_size = 8,
155 .show_host_node_name = 1,
156 .show_host_port_name = 1,
157 .show_host_supported_classes = 1,
158 .show_host_port_id = 1,
159 .show_rport_supported_classes = 1,
160 .show_starget_node_name = 1,
161 .show_starget_port_name = 1,
162 .show_starget_port_id = 1,
163 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
164 .show_rport_dev_loss_tmo = 1,
165
166 };
167
168 static void
169 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
170 {
171 if (timeout > 0)
172 rport->dev_loss_tmo = timeout;
173 else
174 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
175 }
176
177 static int
178 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
179 {
180 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
181 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
182
183 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
184 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
185 return 0;
186 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
187 return -1;
188 return 1;
189 }
190 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
191 return -1;
192 return 1;
193 }
194
195 static int
196 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
197 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
198 {
199 ConfigPageHeader_t hdr;
200 CONFIGPARMS cfg;
201 FCDevicePage0_t *ppage0_alloc, *fc;
202 dma_addr_t page0_dma;
203 int data_sz;
204 int ii;
205
206 FCDevicePage0_t *p0_array=NULL, *p_p0;
207 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
208
209 int rc = -ENOMEM;
210 U32 port_id = 0xffffff;
211 int num_targ = 0;
212 int max_bus = ioc->facts.MaxBuses;
213 int max_targ = ioc->facts.MaxDevices;
214
215 if (max_bus == 0 || max_targ == 0)
216 goto out;
217
218 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
219 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
220 if (!p0_array)
221 goto out;
222
223 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
224 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
225 if (!pp0_array)
226 goto out;
227
228 do {
229 /* Get FC Device Page 0 header */
230 hdr.PageVersion = 0;
231 hdr.PageLength = 0;
232 hdr.PageNumber = 0;
233 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
234 cfg.cfghdr.hdr = &hdr;
235 cfg.physAddr = -1;
236 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
237 cfg.dir = 0;
238 cfg.pageAddr = port_id;
239 cfg.timeout = 0;
240
241 if ((rc = mpt_config(ioc, &cfg)) != 0)
242 break;
243
244 if (hdr.PageLength <= 0)
245 break;
246
247 data_sz = hdr.PageLength * 4;
248 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
249 &page0_dma);
250 rc = -ENOMEM;
251 if (!ppage0_alloc)
252 break;
253
254 cfg.physAddr = page0_dma;
255 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
256
257 if ((rc = mpt_config(ioc, &cfg)) == 0) {
258 ppage0_alloc->PortIdentifier =
259 le32_to_cpu(ppage0_alloc->PortIdentifier);
260
261 ppage0_alloc->WWNN.Low =
262 le32_to_cpu(ppage0_alloc->WWNN.Low);
263
264 ppage0_alloc->WWNN.High =
265 le32_to_cpu(ppage0_alloc->WWNN.High);
266
267 ppage0_alloc->WWPN.Low =
268 le32_to_cpu(ppage0_alloc->WWPN.Low);
269
270 ppage0_alloc->WWPN.High =
271 le32_to_cpu(ppage0_alloc->WWPN.High);
272
273 ppage0_alloc->BBCredit =
274 le16_to_cpu(ppage0_alloc->BBCredit);
275
276 ppage0_alloc->MaxRxFrameSize =
277 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
278
279 port_id = ppage0_alloc->PortIdentifier;
280 num_targ++;
281 *p_p0 = *ppage0_alloc; /* save data */
282 *p_pp0++ = p_p0++; /* save addr */
283 }
284 pci_free_consistent(ioc->pcidev, data_sz,
285 (u8 *) ppage0_alloc, page0_dma);
286 if (rc != 0)
287 break;
288
289 } while (port_id <= 0xff0000);
290
291 if (num_targ) {
292 /* sort array */
293 if (num_targ > 1)
294 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
295 mptfc_FcDevPage0_cmp_func, NULL);
296 /* call caller's func for each targ */
297 for (ii = 0; ii < num_targ; ii++) {
298 fc = *(pp0_array+ii);
299 func(ioc, ioc_port, fc);
300 }
301 }
302
303 out:
304 kfree(pp0_array);
305 kfree(p0_array);
306 return rc;
307 }
308
309 static int
310 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
311 {
312 /* not currently usable */
313 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
314 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
315 return -1;
316
317 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
318 return -1;
319
320 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
321 return -1;
322
323 /*
324 * board data structure already normalized to platform endianness
325 * shifted to avoid unaligned access on 64 bit architecture
326 */
327 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
328 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
329 rid->port_id = pg0->PortIdentifier;
330 rid->roles = FC_RPORT_ROLE_UNKNOWN;
331
332 return 0;
333 }
334
335 static void
336 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
337 {
338 struct fc_rport_identifiers rport_ids;
339 struct fc_rport *rport;
340 struct mptfc_rport_info *ri;
341 int new_ri = 1;
342 u64 pn, nn;
343 VirtTarget *vtarget;
344 u32 roles = FC_RPORT_ROLE_UNKNOWN;
345
346 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
347 return;
348
349 roles |= FC_RPORT_ROLE_FCP_TARGET;
350 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
351 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
352
353 /* scan list looking for a match */
354 list_for_each_entry(ri, &ioc->fc_rports, list) {
355 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
356 if (pn == rport_ids.port_name) { /* match */
357 list_move_tail(&ri->list, &ioc->fc_rports);
358 new_ri = 0;
359 break;
360 }
361 }
362 if (new_ri) { /* allocate one */
363 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
364 if (!ri)
365 return;
366 list_add_tail(&ri->list, &ioc->fc_rports);
367 }
368
369 ri->pg0 = *pg0; /* add/update pg0 data */
370 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
371
372 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
373 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
374 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
375 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
376 if (rport) {
377 ri->rport = rport;
378 if (new_ri) /* may have been reset by user */
379 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
380 /*
381 * if already mapped, remap here. If not mapped,
382 * target_alloc will allocate vtarget and map,
383 * slave_alloc will fill in vdev from vtarget.
384 */
385 if (ri->starget) {
386 vtarget = ri->starget->hostdata;
387 if (vtarget) {
388 vtarget->target_id = pg0->CurrentTargetID;
389 vtarget->bus_id = pg0->CurrentBus;
390 }
391 }
392 *((struct mptfc_rport_info **)rport->dd_data) = ri;
393 /* scan will be scheduled once rport becomes a target */
394 fc_remote_port_rolechg(rport,roles);
395
396 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
397 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
398 dfcprintk ((MYIOC_s_INFO_FMT
399 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
400 "rport tid %d, tmo %d\n",
401 ioc->name,
402 ioc->sh->host_no,
403 pg0->PortIdentifier,
404 (unsigned long long)nn,
405 (unsigned long long)pn,
406 pg0->CurrentTargetID,
407 ri->rport->scsi_target_id,
408 ri->rport->dev_loss_tmo));
409 } else {
410 list_del(&ri->list);
411 kfree(ri);
412 ri = NULL;
413 }
414 }
415 }
416
417 /*
418 * OS entry point to allow for host driver to free allocated memory
419 * Called if no device present or device being unloaded
420 */
421 static void
422 mptfc_target_destroy(struct scsi_target *starget)
423 {
424 struct fc_rport *rport;
425 struct mptfc_rport_info *ri;
426
427 rport = starget_to_rport(starget);
428 if (rport) {
429 ri = *((struct mptfc_rport_info **)rport->dd_data);
430 if (ri) /* better be! */
431 ri->starget = NULL;
432 }
433 if (starget->hostdata)
434 kfree(starget->hostdata);
435 starget->hostdata = NULL;
436 }
437
438 /*
439 * OS entry point to allow host driver to alloc memory
440 * for each scsi target. Called once per device the bus scan.
441 * Return non-zero if allocation fails.
442 */
443 static int
444 mptfc_target_alloc(struct scsi_target *starget)
445 {
446 VirtTarget *vtarget;
447 struct fc_rport *rport;
448 struct mptfc_rport_info *ri;
449 int rc;
450
451 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
452 if (!vtarget)
453 return -ENOMEM;
454 starget->hostdata = vtarget;
455
456 rc = -ENODEV;
457 rport = starget_to_rport(starget);
458 if (rport) {
459 ri = *((struct mptfc_rport_info **)rport->dd_data);
460 if (ri) { /* better be! */
461 vtarget->target_id = ri->pg0.CurrentTargetID;
462 vtarget->bus_id = ri->pg0.CurrentBus;
463 ri->starget = starget;
464 rc = 0;
465 }
466 }
467 if (rc != 0) {
468 kfree(vtarget);
469 starget->hostdata = NULL;
470 }
471
472 return rc;
473 }
474
475 /*
476 * OS entry point to allow host driver to alloc memory
477 * for each scsi device. Called once per device the bus scan.
478 * Return non-zero if allocation fails.
479 * Init memory once per LUN.
480 */
481 static int
482 mptfc_slave_alloc(struct scsi_device *sdev)
483 {
484 MPT_SCSI_HOST *hd;
485 VirtTarget *vtarget;
486 VirtDevice *vdev;
487 struct scsi_target *starget;
488 struct fc_rport *rport;
489
490
491 starget = scsi_target(sdev);
492 rport = starget_to_rport(starget);
493
494 if (!rport || fc_remote_port_chkready(rport))
495 return -ENXIO;
496
497 hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
498
499 vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
500 if (!vdev) {
501 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
502 hd->ioc->name, sizeof(VirtDevice));
503 return -ENOMEM;
504 }
505
506
507 sdev->hostdata = vdev;
508 vtarget = starget->hostdata;
509
510 if (vtarget->num_luns == 0) {
511 vtarget->ioc_id = hd->ioc->id;
512 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
513 hd->Targets[sdev->id] = vtarget;
514 }
515
516 vdev->vtarget = vtarget;
517 vdev->lun = sdev->lun;
518
519 vtarget->num_luns++;
520
521
522 #ifdef DMPT_DEBUG_FC
523 {
524 u64 nn, pn;
525 struct mptfc_rport_info *ri;
526 ri = *((struct mptfc_rport_info **)rport->dd_data);
527 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
528 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
529 dfcprintk ((MYIOC_s_INFO_FMT
530 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
531 "CurrentTargetID %d, %x %llx %llx\n",
532 hd->ioc->name,
533 sdev->host->host_no,
534 vtarget->num_luns,
535 sdev->id, ri->pg0.CurrentTargetID,
536 ri->pg0.PortIdentifier,
537 (unsigned long long)pn,
538 (unsigned long long)nn));
539 }
540 #endif
541
542 return 0;
543 }
544
545 static int
546 mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
547 {
548 struct mptfc_rport_info *ri;
549 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
550 int err;
551
552 err = fc_remote_port_chkready(rport);
553 if (unlikely(err)) {
554 SCpnt->result = err;
555 done(SCpnt);
556 return 0;
557 }
558
559 /* dd_data is null until finished adding target */
560 ri = *((struct mptfc_rport_info **)rport->dd_data);
561 if (unlikely(!ri)) {
562 dfcprintk ((MYIOC_s_INFO_FMT
563 "mptfc_qcmd.%d: %d:%d, dd_data is null.\n",
564 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
565 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
566 SCpnt->device->id,SCpnt->device->lun));
567 SCpnt->result = DID_IMM_RETRY << 16;
568 done(SCpnt);
569 return 0;
570 }
571
572 err = mptscsih_qcmd(SCpnt,done);
573 #ifdef DMPT_DEBUG_FC
574 if (unlikely(err)) {
575 dfcprintk ((MYIOC_s_INFO_FMT
576 "mptfc_qcmd.%d: %d:%d, mptscsih_qcmd returns non-zero, (%x).\n",
577 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
578 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
579 SCpnt->device->id,SCpnt->device->lun,err));
580 }
581 #endif
582 return err;
583 }
584
585 /*
586 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
587 * @ioc: Pointer to MPT_ADAPTER structure
588 * @portnum: IOC Port number
589 *
590 * Return: 0 for success
591 * -ENOMEM if no memory available
592 * -EPERM if not allowed due to ISR context
593 * -EAGAIN if no msg frames currently available
594 * -EFAULT for non-successful reply or no reply (timeout)
595 * -EINVAL portnum arg out of range (hardwired to two elements)
596 */
597 static int
598 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
599 {
600 ConfigPageHeader_t hdr;
601 CONFIGPARMS cfg;
602 FCPortPage0_t *ppage0_alloc;
603 FCPortPage0_t *pp0dest;
604 dma_addr_t page0_dma;
605 int data_sz;
606 int copy_sz;
607 int rc;
608 int count = 400;
609
610 if (portnum > 1)
611 return -EINVAL;
612
613 /* Get FCPort Page 0 header */
614 hdr.PageVersion = 0;
615 hdr.PageLength = 0;
616 hdr.PageNumber = 0;
617 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
618 cfg.cfghdr.hdr = &hdr;
619 cfg.physAddr = -1;
620 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
621 cfg.dir = 0;
622 cfg.pageAddr = portnum;
623 cfg.timeout = 0;
624
625 if ((rc = mpt_config(ioc, &cfg)) != 0)
626 return rc;
627
628 if (hdr.PageLength == 0)
629 return 0;
630
631 data_sz = hdr.PageLength * 4;
632 rc = -ENOMEM;
633 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
634 if (ppage0_alloc) {
635
636 try_again:
637 memset((u8 *)ppage0_alloc, 0, data_sz);
638 cfg.physAddr = page0_dma;
639 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
640
641 if ((rc = mpt_config(ioc, &cfg)) == 0) {
642 /* save the data */
643 pp0dest = &ioc->fc_port_page0[portnum];
644 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
645 memcpy(pp0dest, ppage0_alloc, copy_sz);
646
647 /*
648 * Normalize endianness of structure data,
649 * by byte-swapping all > 1 byte fields!
650 */
651 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
652 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
653 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
654 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
655 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
656 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
657 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
658 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
659 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
660 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
661 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
662 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
663 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
664 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
665 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
666 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
667
668 /*
669 * if still doing discovery,
670 * hang loose a while until finished
671 */
672 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
673 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
674 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
675 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
676 if (count-- > 0) {
677 msleep(100);
678 goto try_again;
679 }
680 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
681 " complete.\n",
682 ioc->name);
683 }
684 }
685
686 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
687 }
688
689 return rc;
690 }
691
692 static int
693 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
694 {
695 ConfigPageHeader_t hdr;
696 CONFIGPARMS cfg;
697 int rc;
698
699 if (portnum > 1)
700 return -EINVAL;
701
702 if (!(ioc->fc_data.fc_port_page1[portnum].data))
703 return -EINVAL;
704
705 /* get fcport page 1 header */
706 hdr.PageVersion = 0;
707 hdr.PageLength = 0;
708 hdr.PageNumber = 1;
709 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
710 cfg.cfghdr.hdr = &hdr;
711 cfg.physAddr = -1;
712 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
713 cfg.dir = 0;
714 cfg.pageAddr = portnum;
715 cfg.timeout = 0;
716
717 if ((rc = mpt_config(ioc, &cfg)) != 0)
718 return rc;
719
720 if (hdr.PageLength == 0)
721 return -ENODEV;
722
723 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
724 return -EINVAL;
725
726 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
727 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
728 cfg.dir = 1;
729
730 rc = mpt_config(ioc, &cfg);
731
732 return rc;
733 }
734
735 static int
736 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
737 {
738 ConfigPageHeader_t hdr;
739 CONFIGPARMS cfg;
740 FCPortPage1_t *page1_alloc;
741 dma_addr_t page1_dma;
742 int data_sz;
743 int rc;
744
745 if (portnum > 1)
746 return -EINVAL;
747
748 /* get fcport page 1 header */
749 hdr.PageVersion = 0;
750 hdr.PageLength = 0;
751 hdr.PageNumber = 1;
752 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
753 cfg.cfghdr.hdr = &hdr;
754 cfg.physAddr = -1;
755 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
756 cfg.dir = 0;
757 cfg.pageAddr = portnum;
758 cfg.timeout = 0;
759
760 if ((rc = mpt_config(ioc, &cfg)) != 0)
761 return rc;
762
763 if (hdr.PageLength == 0)
764 return -ENODEV;
765
766 start_over:
767
768 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
769 data_sz = hdr.PageLength * 4;
770 if (data_sz < sizeof(FCPortPage1_t))
771 data_sz = sizeof(FCPortPage1_t);
772
773 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
774 data_sz,
775 &page1_dma);
776 if (!page1_alloc)
777 return -ENOMEM;
778 }
779 else {
780 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
781 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
782 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
783 if (hdr.PageLength * 4 > data_sz) {
784 ioc->fc_data.fc_port_page1[portnum].data = NULL;
785 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
786 page1_alloc, page1_dma);
787 goto start_over;
788 }
789 }
790
791 memset(page1_alloc,0,data_sz);
792
793 cfg.physAddr = page1_dma;
794 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
795
796 if ((rc = mpt_config(ioc, &cfg)) == 0) {
797 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
798 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
799 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
800 }
801 else {
802 ioc->fc_data.fc_port_page1[portnum].data = NULL;
803 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
804 page1_alloc, page1_dma);
805 }
806
807 return rc;
808 }
809
810 static void
811 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
812 {
813 int ii;
814 FCPortPage1_t *pp1;
815
816 #define MPTFC_FW_DEVICE_TIMEOUT (1)
817 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
818 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
819 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
820
821 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
822 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
823 continue;
824 pp1 = ioc->fc_data.fc_port_page1[ii].data;
825 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
826 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
827 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
828 && ((pp1->Flags & OFF_FLAGS) == 0))
829 continue;
830 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
831 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
832 pp1->Flags &= ~OFF_FLAGS;
833 pp1->Flags |= ON_FLAGS;
834 mptfc_WriteFcPortPage1(ioc, ii);
835 }
836 }
837
838
839 static void
840 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
841 {
842 unsigned class = 0, cos = 0;
843
844 /* don't know what to do as only one scsi (fc) host was allocated */
845 if (portnum != 0)
846 return;
847
848 class = ioc->fc_port_page0[portnum].SupportedServiceClass;
849 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
850 cos |= FC_COS_CLASS1;
851 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
852 cos |= FC_COS_CLASS2;
853 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
854 cos |= FC_COS_CLASS3;
855
856 fc_host_node_name(ioc->sh) =
857 (u64)ioc->fc_port_page0[portnum].WWNN.High << 32
858 | (u64)ioc->fc_port_page0[portnum].WWNN.Low;
859
860 fc_host_port_name(ioc->sh) =
861 (u64)ioc->fc_port_page0[portnum].WWPN.High << 32
862 | (u64)ioc->fc_port_page0[portnum].WWPN.Low;
863
864 fc_host_port_id(ioc->sh) = ioc->fc_port_page0[portnum].PortIdentifier;
865
866 fc_host_supported_classes(ioc->sh) = cos;
867
868 fc_host_tgtid_bind_type(ioc->sh) = FC_TGTID_BIND_BY_WWPN;
869 }
870
871 static void
872 mptfc_setup_reset(void *arg)
873 {
874 MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
875 u64 pn;
876 struct mptfc_rport_info *ri;
877
878 /* reset about to happen, delete (block) all rports */
879 list_for_each_entry(ri, &ioc->fc_rports, list) {
880 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
881 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
882 fc_remote_port_delete(ri->rport); /* won't sleep */
883 ri->rport = NULL;
884
885 pn = (u64)ri->pg0.WWPN.High << 32 |
886 (u64)ri->pg0.WWPN.Low;
887 dfcprintk ((MYIOC_s_INFO_FMT
888 "mptfc_setup_reset.%d: %llx deleted\n",
889 ioc->name,
890 ioc->sh->host_no,
891 (unsigned long long)pn));
892 }
893 }
894 }
895
896 static void
897 mptfc_rescan_devices(void *arg)
898 {
899 MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
900 int ii;
901 int work_to_do;
902 u64 pn;
903 unsigned long flags;
904 struct mptfc_rport_info *ri;
905
906 do {
907 /* start by tagging all ports as missing */
908 list_for_each_entry(ri, &ioc->fc_rports, list) {
909 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
910 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
911 }
912 }
913
914 /*
915 * now rescan devices known to adapter,
916 * will reregister existing rports
917 */
918 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
919 (void) mptfc_GetFcPortPage0(ioc, ii);
920 mptfc_init_host_attr(ioc,ii); /* refresh */
921 mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
922 }
923
924 /* delete devices still missing */
925 list_for_each_entry(ri, &ioc->fc_rports, list) {
926 /* if newly missing, delete it */
927 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
928
929 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
930 MPT_RPORT_INFO_FLAGS_MISSING);
931 fc_remote_port_delete(ri->rport); /* won't sleep */
932 ri->rport = NULL;
933
934 pn = (u64)ri->pg0.WWPN.High << 32 |
935 (u64)ri->pg0.WWPN.Low;
936 dfcprintk ((MYIOC_s_INFO_FMT
937 "mptfc_rescan.%d: %llx deleted\n",
938 ioc->name,
939 ioc->sh->host_no,
940 (unsigned long long)pn));
941 }
942 }
943
944 /*
945 * allow multiple passes as target state
946 * might have changed during scan
947 */
948 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
949 if (ioc->fc_rescan_work_count > 2) /* only need one more */
950 ioc->fc_rescan_work_count = 2;
951 work_to_do = --ioc->fc_rescan_work_count;
952 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
953 } while (work_to_do);
954 }
955
956 static int
957 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
958 {
959 struct Scsi_Host *sh;
960 MPT_SCSI_HOST *hd;
961 MPT_ADAPTER *ioc;
962 unsigned long flags;
963 int ii;
964 int numSGE = 0;
965 int scale;
966 int ioc_cap;
967 int error=0;
968 int r;
969
970 if ((r = mpt_attach(pdev,id)) != 0)
971 return r;
972
973 ioc = pci_get_drvdata(pdev);
974 ioc->DoneCtx = mptfcDoneCtx;
975 ioc->TaskCtx = mptfcTaskCtx;
976 ioc->InternalCtx = mptfcInternalCtx;
977
978 /* Added sanity check on readiness of the MPT adapter.
979 */
980 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
981 printk(MYIOC_s_WARN_FMT
982 "Skipping because it's not operational!\n",
983 ioc->name);
984 error = -ENODEV;
985 goto out_mptfc_probe;
986 }
987
988 if (!ioc->active) {
989 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
990 ioc->name);
991 error = -ENODEV;
992 goto out_mptfc_probe;
993 }
994
995 /* Sanity check - ensure at least 1 port is INITIATOR capable
996 */
997 ioc_cap = 0;
998 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
999 if (ioc->pfacts[ii].ProtocolFlags &
1000 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1001 ioc_cap ++;
1002 }
1003
1004 if (!ioc_cap) {
1005 printk(MYIOC_s_WARN_FMT
1006 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1007 ioc->name, ioc);
1008 return -ENODEV;
1009 }
1010
1011 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1012
1013 if (!sh) {
1014 printk(MYIOC_s_WARN_FMT
1015 "Unable to register controller with SCSI subsystem\n",
1016 ioc->name);
1017 error = -1;
1018 goto out_mptfc_probe;
1019 }
1020
1021 spin_lock_init(&ioc->fc_rescan_work_lock);
1022 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc);
1023 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset, (void *)ioc);
1024
1025 spin_lock_irqsave(&ioc->FreeQlock, flags);
1026
1027 /* Attach the SCSI Host to the IOC structure
1028 */
1029 ioc->sh = sh;
1030
1031 sh->io_port = 0;
1032 sh->n_io_port = 0;
1033 sh->irq = 0;
1034
1035 /* set 16 byte cdb's */
1036 sh->max_cmd_len = 16;
1037
1038 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
1039
1040 sh->max_lun = MPT_LAST_LUN + 1;
1041 sh->max_channel = 0;
1042 sh->this_id = ioc->pfacts[0].PortSCSIID;
1043
1044 /* Required entry.
1045 */
1046 sh->unique_id = ioc->id;
1047
1048 /* Verify that we won't exceed the maximum
1049 * number of chain buffers
1050 * We can optimize: ZZ = req_sz/sizeof(SGE)
1051 * For 32bit SGE's:
1052 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1053 * + (req_sz - 64)/sizeof(SGE)
1054 * A slightly different algorithm is required for
1055 * 64bit SGEs.
1056 */
1057 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
1058 if (sizeof(dma_addr_t) == sizeof(u64)) {
1059 numSGE = (scale - 1) *
1060 (ioc->facts.MaxChainDepth-1) + scale +
1061 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
1062 sizeof(u32));
1063 } else {
1064 numSGE = 1 + (scale - 1) *
1065 (ioc->facts.MaxChainDepth-1) + scale +
1066 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
1067 sizeof(u32));
1068 }
1069
1070 if (numSGE < sh->sg_tablesize) {
1071 /* Reset this value */
1072 dprintk((MYIOC_s_INFO_FMT
1073 "Resetting sg_tablesize to %d from %d\n",
1074 ioc->name, numSGE, sh->sg_tablesize));
1075 sh->sg_tablesize = numSGE;
1076 }
1077
1078 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1079
1080 hd = (MPT_SCSI_HOST *) sh->hostdata;
1081 hd->ioc = ioc;
1082
1083 /* SCSI needs scsi_cmnd lookup table!
1084 * (with size equal to req_depth*PtrSz!)
1085 */
1086 hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1087 if (!hd->ScsiLookup) {
1088 error = -ENOMEM;
1089 goto out_mptfc_probe;
1090 }
1091
1092 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
1093 ioc->name, hd->ScsiLookup));
1094
1095 /* Allocate memory for the device structures.
1096 * A non-Null pointer at an offset
1097 * indicates a device exists.
1098 * max_id = 1 + maximum id (hosts.h)
1099 */
1100 hd->Targets = kcalloc(sh->max_id, sizeof(void *), GFP_ATOMIC);
1101 if (!hd->Targets) {
1102 error = -ENOMEM;
1103 goto out_mptfc_probe;
1104 }
1105
1106 dprintk((KERN_INFO " vdev @ %p\n", hd->Targets));
1107
1108 /* Clear the TM flags
1109 */
1110 hd->tmPending = 0;
1111 hd->tmState = TM_STATE_NONE;
1112 hd->resetPending = 0;
1113 hd->abortSCpnt = NULL;
1114
1115 /* Clear the pointer used to store
1116 * single-threaded commands, i.e., those
1117 * issued during a bus scan, dv and
1118 * configuration pages.
1119 */
1120 hd->cmdPtr = NULL;
1121
1122 /* Initialize this SCSI Hosts' timers
1123 * To use, set the timer expires field
1124 * and add_timer
1125 */
1126 init_timer(&hd->timer);
1127 hd->timer.data = (unsigned long) hd;
1128 hd->timer.function = mptscsih_timer_expired;
1129
1130 init_waitqueue_head(&hd->scandv_waitq);
1131 hd->scandv_wait_done = 0;
1132 hd->last_queue_full = 0;
1133
1134 sh->transportt = mptfc_transport_template;
1135 error = scsi_add_host (sh, &ioc->pcidev->dev);
1136 if(error) {
1137 dprintk((KERN_ERR MYNAM
1138 "scsi_add_host failed\n"));
1139 goto out_mptfc_probe;
1140 }
1141
1142 /* initialize workqueue */
1143
1144 snprintf(ioc->fc_rescan_work_q_name, KOBJ_NAME_LEN, "mptfc_wq_%d",
1145 sh->host_no);
1146 ioc->fc_rescan_work_q =
1147 create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
1148 if (!ioc->fc_rescan_work_q)
1149 goto out_mptfc_probe;
1150
1151 /*
1152 * Pre-fetch FC port WWN and stuff...
1153 * (FCPortPage0_t stuff)
1154 */
1155 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1156 (void) mptfc_GetFcPortPage0(ioc, ii);
1157 }
1158 mptfc_SetFcPortPage1_defaults(ioc);
1159
1160 /*
1161 * scan for rports -
1162 * by doing it via the workqueue, some locking is eliminated
1163 */
1164
1165 ioc->fc_rescan_work_count = 1;
1166 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1167 flush_workqueue(ioc->fc_rescan_work_q);
1168
1169 return 0;
1170
1171 out_mptfc_probe:
1172
1173 mptscsih_remove(pdev);
1174 return error;
1175 }
1176
1177 static struct pci_driver mptfc_driver = {
1178 .name = "mptfc",
1179 .id_table = mptfc_pci_table,
1180 .probe = mptfc_probe,
1181 .remove = __devexit_p(mptfc_remove),
1182 .shutdown = mptscsih_shutdown,
1183 #ifdef CONFIG_PM
1184 .suspend = mptscsih_suspend,
1185 .resume = mptscsih_resume,
1186 #endif
1187 };
1188
1189 static int
1190 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1191 {
1192 MPT_SCSI_HOST *hd;
1193 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1194 unsigned long flags;
1195 int rc=1;
1196
1197 devtverboseprintk((MYIOC_s_INFO_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1198 ioc->name, event));
1199
1200 if (ioc->sh == NULL ||
1201 ((hd = (MPT_SCSI_HOST *)ioc->sh->hostdata) == NULL))
1202 return 1;
1203
1204 switch (event) {
1205 case MPI_EVENT_RESCAN:
1206 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1207 if (ioc->fc_rescan_work_q) {
1208 if (ioc->fc_rescan_work_count++ == 0) {
1209 queue_work(ioc->fc_rescan_work_q,
1210 &ioc->fc_rescan_work);
1211 }
1212 }
1213 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1214 break;
1215 default:
1216 rc = mptscsih_event_process(ioc,pEvReply);
1217 break;
1218 }
1219 return rc;
1220 }
1221
1222 static int
1223 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1224 {
1225 int rc;
1226 unsigned long flags;
1227
1228 rc = mptscsih_ioc_reset(ioc,reset_phase);
1229 if (rc == 0)
1230 return rc;
1231
1232
1233 dtmprintk((KERN_WARNING MYNAM
1234 ": IOC %s_reset routed to FC host driver!\n",
1235 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1236 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1237
1238 if (reset_phase == MPT_IOC_SETUP_RESET) {
1239 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1240 if (ioc->fc_rescan_work_q) {
1241 queue_work(ioc->fc_rescan_work_q,
1242 &ioc->fc_setup_reset_work);
1243 }
1244 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1245 }
1246
1247 else if (reset_phase == MPT_IOC_PRE_RESET) {
1248 }
1249
1250 else { /* MPT_IOC_POST_RESET */
1251 mptfc_SetFcPortPage1_defaults(ioc);
1252 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1253 if (ioc->fc_rescan_work_q) {
1254 if (ioc->fc_rescan_work_count++ == 0) {
1255 queue_work(ioc->fc_rescan_work_q,
1256 &ioc->fc_rescan_work);
1257 }
1258 }
1259 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1260 }
1261 return 1;
1262 }
1263
1264 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1265 /**
1266 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
1267 * linux scsi mid-layer.
1268 *
1269 * Returns 0 for success, non-zero for failure.
1270 */
1271 static int __init
1272 mptfc_init(void)
1273 {
1274 int error;
1275
1276 show_mptmod_ver(my_NAME, my_VERSION);
1277
1278 /* sanity check module parameters */
1279 if (mptfc_dev_loss_tmo <= 0)
1280 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1281
1282 mptfc_transport_template =
1283 fc_attach_transport(&mptfc_transport_functions);
1284
1285 if (!mptfc_transport_template)
1286 return -ENODEV;
1287
1288 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
1289 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
1290 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
1291
1292 if (mpt_event_register(mptfcDoneCtx, mptfc_event_process) == 0) {
1293 devtverboseprintk((KERN_INFO MYNAM
1294 ": Registered for IOC event notifications\n"));
1295 }
1296
1297 if (mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset) == 0) {
1298 dprintk((KERN_INFO MYNAM
1299 ": Registered for IOC reset notifications\n"));
1300 }
1301
1302 error = pci_register_driver(&mptfc_driver);
1303 if (error)
1304 fc_release_transport(mptfc_transport_template);
1305
1306 return error;
1307 }
1308
1309 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1310 /**
1311 * mptfc_remove - Removed fc infrastructure for devices
1312 * @pdev: Pointer to pci_dev structure
1313 *
1314 */
1315 static void __devexit
1316 mptfc_remove(struct pci_dev *pdev)
1317 {
1318 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1319 struct mptfc_rport_info *p, *n;
1320 struct workqueue_struct *work_q;
1321 unsigned long flags;
1322 int ii;
1323
1324 /* destroy workqueue */
1325 if ((work_q=ioc->fc_rescan_work_q)) {
1326 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1327 ioc->fc_rescan_work_q = NULL;
1328 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1329 destroy_workqueue(work_q);
1330 }
1331
1332 fc_remove_host(ioc->sh);
1333
1334 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1335 list_del(&p->list);
1336 kfree(p);
1337 }
1338
1339 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1340 if (ioc->fc_data.fc_port_page1[ii].data) {
1341 pci_free_consistent(ioc->pcidev,
1342 ioc->fc_data.fc_port_page1[ii].pg_sz,
1343 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1344 ioc->fc_data.fc_port_page1[ii].dma);
1345 ioc->fc_data.fc_port_page1[ii].data = NULL;
1346 }
1347 }
1348
1349 mptscsih_remove(pdev);
1350 }
1351
1352 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1353 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1354 /**
1355 * mptfc_exit - Unregisters MPT adapter(s)
1356 *
1357 */
1358 static void __exit
1359 mptfc_exit(void)
1360 {
1361 pci_unregister_driver(&mptfc_driver);
1362 fc_release_transport(mptfc_transport_template);
1363
1364 mpt_reset_deregister(mptfcDoneCtx);
1365 dprintk((KERN_INFO MYNAM
1366 ": Deregistered for IOC reset notifications\n"));
1367
1368 mpt_event_deregister(mptfcDoneCtx);
1369 dprintk((KERN_INFO MYNAM
1370 ": Deregistered for IOC event notifications\n"));
1371
1372 mpt_deregister(mptfcInternalCtx);
1373 mpt_deregister(mptfcTaskCtx);
1374 mpt_deregister(mptfcDoneCtx);
1375 }
1376
1377 module_init(mptfc_init);
1378 module_exit(mptfc_exit);
Linux kernel - Deliverables
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