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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 #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 static int mptfc_abort(struct scsi_cmnd *SCpnt);
100 static int mptfc_dev_reset(struct scsi_cmnd *SCpnt);
101 static int mptfc_bus_reset(struct scsi_cmnd *SCpnt);
102 static int mptfc_host_reset(struct scsi_cmnd *SCpnt);
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 = mptfc_abort,
118 .eh_device_reset_handler = mptfc_dev_reset,
119 .eh_bus_reset_handler = mptfc_bus_reset,
120 .eh_host_reset_handler = mptfc_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, MPI_MANUFACTPAGE_DEVICEID_FC909,
136 PCI_ANY_ID, PCI_ANY_ID },
137 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
138 PCI_ANY_ID, PCI_ANY_ID },
139 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
140 PCI_ANY_ID, PCI_ANY_ID },
141 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
142 PCI_ANY_ID, PCI_ANY_ID },
143 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
144 PCI_ANY_ID, PCI_ANY_ID },
145 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
146 PCI_ANY_ID, PCI_ANY_ID },
147 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
148 PCI_ANY_ID, PCI_ANY_ID },
149 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
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 .show_host_supported_speeds = 1,
170 .show_host_maxframe_size = 1,
171 .show_host_speed = 1,
172 .show_host_fabric_name = 1,
173 .show_host_port_type = 1,
174 .show_host_port_state = 1,
175 .show_host_symbolic_name = 1,
176 };
177
178 static int
179 mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
180 int (*func)(struct scsi_cmnd *SCpnt),
181 const char *caller)
182 {
183 struct scsi_device *sdev = SCpnt->device;
184 struct Scsi_Host *shost = sdev->host;
185 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
186 unsigned long flags;
187 int ready;
188
189 spin_lock_irqsave(shost->host_lock, flags);
190 while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY) {
191 spin_unlock_irqrestore(shost->host_lock, flags);
192 dfcprintk ((MYIOC_s_INFO_FMT
193 "mptfc_block_error_handler.%d: %d:%d, port status is "
194 "DID_IMM_RETRY, deferring %s recovery.\n",
195 ((MPT_SCSI_HOST *) shost->hostdata)->ioc->name,
196 ((MPT_SCSI_HOST *) shost->hostdata)->ioc->sh->host_no,
197 SCpnt->device->id,SCpnt->device->lun,caller));
198 msleep(1000);
199 spin_lock_irqsave(shost->host_lock, flags);
200 }
201 spin_unlock_irqrestore(shost->host_lock, flags);
202
203 if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata) {
204 dfcprintk ((MYIOC_s_INFO_FMT
205 "%s.%d: %d:%d, failing recovery, "
206 "port state %d, vdev %p.\n", caller,
207 ((MPT_SCSI_HOST *) shost->hostdata)->ioc->name,
208 ((MPT_SCSI_HOST *) shost->hostdata)->ioc->sh->host_no,
209 SCpnt->device->id,SCpnt->device->lun,ready,
210 SCpnt->device->hostdata));
211 return FAILED;
212 }
213 dfcprintk ((MYIOC_s_INFO_FMT
214 "%s.%d: %d:%d, executing recovery.\n", caller,
215 ((MPT_SCSI_HOST *) shost->hostdata)->ioc->name,
216 ((MPT_SCSI_HOST *) shost->hostdata)->ioc->sh->host_no,
217 SCpnt->device->id,SCpnt->device->lun));
218 return (*func)(SCpnt);
219 }
220
221 static int
222 mptfc_abort(struct scsi_cmnd *SCpnt)
223 {
224 return
225 mptfc_block_error_handler(SCpnt, mptscsih_abort, __FUNCTION__);
226 }
227
228 static int
229 mptfc_dev_reset(struct scsi_cmnd *SCpnt)
230 {
231 return
232 mptfc_block_error_handler(SCpnt, mptscsih_dev_reset, __FUNCTION__);
233 }
234
235 static int
236 mptfc_bus_reset(struct scsi_cmnd *SCpnt)
237 {
238 return
239 mptfc_block_error_handler(SCpnt, mptscsih_bus_reset, __FUNCTION__);
240 }
241
242 static int
243 mptfc_host_reset(struct scsi_cmnd *SCpnt)
244 {
245 return
246 mptfc_block_error_handler(SCpnt, mptscsih_host_reset, __FUNCTION__);
247 }
248
249 static void
250 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
251 {
252 if (timeout > 0)
253 rport->dev_loss_tmo = timeout;
254 else
255 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
256 }
257
258 static int
259 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
260 {
261 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
262 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
263
264 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
265 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
266 return 0;
267 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
268 return -1;
269 return 1;
270 }
271 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
272 return -1;
273 return 1;
274 }
275
276 static int
277 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
278 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
279 {
280 ConfigPageHeader_t hdr;
281 CONFIGPARMS cfg;
282 FCDevicePage0_t *ppage0_alloc, *fc;
283 dma_addr_t page0_dma;
284 int data_sz;
285 int ii;
286
287 FCDevicePage0_t *p0_array=NULL, *p_p0;
288 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
289
290 int rc = -ENOMEM;
291 U32 port_id = 0xffffff;
292 int num_targ = 0;
293 int max_bus = ioc->facts.MaxBuses;
294 int max_targ = ioc->facts.MaxDevices;
295
296 if (max_bus == 0 || max_targ == 0)
297 goto out;
298
299 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
300 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
301 if (!p0_array)
302 goto out;
303
304 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
305 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
306 if (!pp0_array)
307 goto out;
308
309 do {
310 /* Get FC Device Page 0 header */
311 hdr.PageVersion = 0;
312 hdr.PageLength = 0;
313 hdr.PageNumber = 0;
314 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
315 cfg.cfghdr.hdr = &hdr;
316 cfg.physAddr = -1;
317 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
318 cfg.dir = 0;
319 cfg.pageAddr = port_id;
320 cfg.timeout = 0;
321
322 if ((rc = mpt_config(ioc, &cfg)) != 0)
323 break;
324
325 if (hdr.PageLength <= 0)
326 break;
327
328 data_sz = hdr.PageLength * 4;
329 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
330 &page0_dma);
331 rc = -ENOMEM;
332 if (!ppage0_alloc)
333 break;
334
335 cfg.physAddr = page0_dma;
336 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
337
338 if ((rc = mpt_config(ioc, &cfg)) == 0) {
339 ppage0_alloc->PortIdentifier =
340 le32_to_cpu(ppage0_alloc->PortIdentifier);
341
342 ppage0_alloc->WWNN.Low =
343 le32_to_cpu(ppage0_alloc->WWNN.Low);
344
345 ppage0_alloc->WWNN.High =
346 le32_to_cpu(ppage0_alloc->WWNN.High);
347
348 ppage0_alloc->WWPN.Low =
349 le32_to_cpu(ppage0_alloc->WWPN.Low);
350
351 ppage0_alloc->WWPN.High =
352 le32_to_cpu(ppage0_alloc->WWPN.High);
353
354 ppage0_alloc->BBCredit =
355 le16_to_cpu(ppage0_alloc->BBCredit);
356
357 ppage0_alloc->MaxRxFrameSize =
358 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
359
360 port_id = ppage0_alloc->PortIdentifier;
361 num_targ++;
362 *p_p0 = *ppage0_alloc; /* save data */
363 *p_pp0++ = p_p0++; /* save addr */
364 }
365 pci_free_consistent(ioc->pcidev, data_sz,
366 (u8 *) ppage0_alloc, page0_dma);
367 if (rc != 0)
368 break;
369
370 } while (port_id <= 0xff0000);
371
372 if (num_targ) {
373 /* sort array */
374 if (num_targ > 1)
375 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
376 mptfc_FcDevPage0_cmp_func, NULL);
377 /* call caller's func for each targ */
378 for (ii = 0; ii < num_targ; ii++) {
379 fc = *(pp0_array+ii);
380 func(ioc, ioc_port, fc);
381 }
382 }
383
384 out:
385 kfree(pp0_array);
386 kfree(p0_array);
387 return rc;
388 }
389
390 static int
391 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
392 {
393 /* not currently usable */
394 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
395 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
396 return -1;
397
398 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
399 return -1;
400
401 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
402 return -1;
403
404 /*
405 * board data structure already normalized to platform endianness
406 * shifted to avoid unaligned access on 64 bit architecture
407 */
408 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
409 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
410 rid->port_id = pg0->PortIdentifier;
411 rid->roles = FC_RPORT_ROLE_UNKNOWN;
412
413 return 0;
414 }
415
416 static void
417 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
418 {
419 struct fc_rport_identifiers rport_ids;
420 struct fc_rport *rport;
421 struct mptfc_rport_info *ri;
422 int new_ri = 1;
423 u64 pn, nn;
424 VirtTarget *vtarget;
425 u32 roles = FC_RPORT_ROLE_UNKNOWN;
426
427 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
428 return;
429
430 roles |= FC_RPORT_ROLE_FCP_TARGET;
431 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
432 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
433
434 /* scan list looking for a match */
435 list_for_each_entry(ri, &ioc->fc_rports, list) {
436 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
437 if (pn == rport_ids.port_name) { /* match */
438 list_move_tail(&ri->list, &ioc->fc_rports);
439 new_ri = 0;
440 break;
441 }
442 }
443 if (new_ri) { /* allocate one */
444 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
445 if (!ri)
446 return;
447 list_add_tail(&ri->list, &ioc->fc_rports);
448 }
449
450 ri->pg0 = *pg0; /* add/update pg0 data */
451 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
452
453 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
454 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
455 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
456 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
457 if (rport) {
458 ri->rport = rport;
459 if (new_ri) /* may have been reset by user */
460 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
461 /*
462 * if already mapped, remap here. If not mapped,
463 * target_alloc will allocate vtarget and map,
464 * slave_alloc will fill in vdev from vtarget.
465 */
466 if (ri->starget) {
467 vtarget = ri->starget->hostdata;
468 if (vtarget) {
469 vtarget->target_id = pg0->CurrentTargetID;
470 vtarget->bus_id = pg0->CurrentBus;
471 }
472 }
473 *((struct mptfc_rport_info **)rport->dd_data) = ri;
474 /* scan will be scheduled once rport becomes a target */
475 fc_remote_port_rolechg(rport,roles);
476
477 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
478 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
479 dfcprintk ((MYIOC_s_INFO_FMT
480 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
481 "rport tid %d, tmo %d\n",
482 ioc->name,
483 ioc->sh->host_no,
484 pg0->PortIdentifier,
485 (unsigned long long)nn,
486 (unsigned long long)pn,
487 pg0->CurrentTargetID,
488 ri->rport->scsi_target_id,
489 ri->rport->dev_loss_tmo));
490 } else {
491 list_del(&ri->list);
492 kfree(ri);
493 ri = NULL;
494 }
495 }
496 }
497
498 /*
499 * OS entry point to allow for host driver to free allocated memory
500 * Called if no device present or device being unloaded
501 */
502 static void
503 mptfc_target_destroy(struct scsi_target *starget)
504 {
505 struct fc_rport *rport;
506 struct mptfc_rport_info *ri;
507
508 rport = starget_to_rport(starget);
509 if (rport) {
510 ri = *((struct mptfc_rport_info **)rport->dd_data);
511 if (ri) /* better be! */
512 ri->starget = NULL;
513 }
514 if (starget->hostdata)
515 kfree(starget->hostdata);
516 starget->hostdata = NULL;
517 }
518
519 /*
520 * OS entry point to allow host driver to alloc memory
521 * for each scsi target. Called once per device the bus scan.
522 * Return non-zero if allocation fails.
523 */
524 static int
525 mptfc_target_alloc(struct scsi_target *starget)
526 {
527 VirtTarget *vtarget;
528 struct fc_rport *rport;
529 struct mptfc_rport_info *ri;
530 int rc;
531
532 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
533 if (!vtarget)
534 return -ENOMEM;
535 starget->hostdata = vtarget;
536
537 rc = -ENODEV;
538 rport = starget_to_rport(starget);
539 if (rport) {
540 ri = *((struct mptfc_rport_info **)rport->dd_data);
541 if (ri) { /* better be! */
542 vtarget->target_id = ri->pg0.CurrentTargetID;
543 vtarget->bus_id = ri->pg0.CurrentBus;
544 ri->starget = starget;
545 rc = 0;
546 }
547 }
548 if (rc != 0) {
549 kfree(vtarget);
550 starget->hostdata = NULL;
551 }
552
553 return rc;
554 }
555
556 /*
557 * OS entry point to allow host driver to alloc memory
558 * for each scsi device. Called once per device the bus scan.
559 * Return non-zero if allocation fails.
560 * Init memory once per LUN.
561 */
562 static int
563 mptfc_slave_alloc(struct scsi_device *sdev)
564 {
565 MPT_SCSI_HOST *hd;
566 VirtTarget *vtarget;
567 VirtDevice *vdev;
568 struct scsi_target *starget;
569 struct fc_rport *rport;
570
571
572 starget = scsi_target(sdev);
573 rport = starget_to_rport(starget);
574
575 if (!rport || fc_remote_port_chkready(rport))
576 return -ENXIO;
577
578 hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
579
580 vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
581 if (!vdev) {
582 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
583 hd->ioc->name, sizeof(VirtDevice));
584 return -ENOMEM;
585 }
586
587
588 sdev->hostdata = vdev;
589 vtarget = starget->hostdata;
590
591 if (vtarget->num_luns == 0) {
592 vtarget->ioc_id = hd->ioc->id;
593 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
594 hd->Targets[sdev->id] = vtarget;
595 }
596
597 vdev->vtarget = vtarget;
598 vdev->lun = sdev->lun;
599
600 vtarget->num_luns++;
601
602
603 #ifdef DMPT_DEBUG_FC
604 {
605 u64 nn, pn;
606 struct mptfc_rport_info *ri;
607 ri = *((struct mptfc_rport_info **)rport->dd_data);
608 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
609 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
610 dfcprintk ((MYIOC_s_INFO_FMT
611 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
612 "CurrentTargetID %d, %x %llx %llx\n",
613 hd->ioc->name,
614 sdev->host->host_no,
615 vtarget->num_luns,
616 sdev->id, ri->pg0.CurrentTargetID,
617 ri->pg0.PortIdentifier,
618 (unsigned long long)pn,
619 (unsigned long long)nn));
620 }
621 #endif
622
623 return 0;
624 }
625
626 static int
627 mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
628 {
629 struct mptfc_rport_info *ri;
630 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
631 int err;
632
633 err = fc_remote_port_chkready(rport);
634 if (unlikely(err)) {
635 SCpnt->result = err;
636 done(SCpnt);
637 return 0;
638 }
639
640 if (!SCpnt->device->hostdata) { /* vdev */
641 SCpnt->result = DID_NO_CONNECT << 16;
642 done(SCpnt);
643 return 0;
644 }
645
646 /* dd_data is null until finished adding target */
647 ri = *((struct mptfc_rport_info **)rport->dd_data);
648 if (unlikely(!ri)) {
649 dfcprintk ((MYIOC_s_INFO_FMT
650 "mptfc_qcmd.%d: %d:%d, dd_data is null.\n",
651 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
652 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
653 SCpnt->device->id,SCpnt->device->lun));
654 SCpnt->result = DID_IMM_RETRY << 16;
655 done(SCpnt);
656 return 0;
657 }
658
659 err = mptscsih_qcmd(SCpnt,done);
660 #ifdef DMPT_DEBUG_FC
661 if (unlikely(err)) {
662 dfcprintk ((MYIOC_s_INFO_FMT
663 "mptfc_qcmd.%d: %d:%d, mptscsih_qcmd returns non-zero, (%x).\n",
664 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
665 ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
666 SCpnt->device->id,SCpnt->device->lun,err));
667 }
668 #endif
669 return err;
670 }
671
672 /*
673 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
674 * @ioc: Pointer to MPT_ADAPTER structure
675 * @portnum: IOC Port number
676 *
677 * Return: 0 for success
678 * -ENOMEM if no memory available
679 * -EPERM if not allowed due to ISR context
680 * -EAGAIN if no msg frames currently available
681 * -EFAULT for non-successful reply or no reply (timeout)
682 * -EINVAL portnum arg out of range (hardwired to two elements)
683 */
684 static int
685 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
686 {
687 ConfigPageHeader_t hdr;
688 CONFIGPARMS cfg;
689 FCPortPage0_t *ppage0_alloc;
690 FCPortPage0_t *pp0dest;
691 dma_addr_t page0_dma;
692 int data_sz;
693 int copy_sz;
694 int rc;
695 int count = 400;
696
697 if (portnum > 1)
698 return -EINVAL;
699
700 /* Get FCPort Page 0 header */
701 hdr.PageVersion = 0;
702 hdr.PageLength = 0;
703 hdr.PageNumber = 0;
704 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
705 cfg.cfghdr.hdr = &hdr;
706 cfg.physAddr = -1;
707 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
708 cfg.dir = 0;
709 cfg.pageAddr = portnum;
710 cfg.timeout = 0;
711
712 if ((rc = mpt_config(ioc, &cfg)) != 0)
713 return rc;
714
715 if (hdr.PageLength == 0)
716 return 0;
717
718 data_sz = hdr.PageLength * 4;
719 rc = -ENOMEM;
720 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
721 if (ppage0_alloc) {
722
723 try_again:
724 memset((u8 *)ppage0_alloc, 0, data_sz);
725 cfg.physAddr = page0_dma;
726 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
727
728 if ((rc = mpt_config(ioc, &cfg)) == 0) {
729 /* save the data */
730 pp0dest = &ioc->fc_port_page0[portnum];
731 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
732 memcpy(pp0dest, ppage0_alloc, copy_sz);
733
734 /*
735 * Normalize endianness of structure data,
736 * by byte-swapping all > 1 byte fields!
737 */
738 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
739 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
740 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
741 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
742 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
743 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
744 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
745 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
746 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
747 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
748 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
749 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
750 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
751 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
752 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
753 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
754
755 /*
756 * if still doing discovery,
757 * hang loose a while until finished
758 */
759 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
760 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
761 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
762 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
763 if (count-- > 0) {
764 msleep(100);
765 goto try_again;
766 }
767 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
768 " complete.\n",
769 ioc->name);
770 }
771 }
772
773 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
774 }
775
776 return rc;
777 }
778
779 static int
780 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
781 {
782 ConfigPageHeader_t hdr;
783 CONFIGPARMS cfg;
784 int rc;
785
786 if (portnum > 1)
787 return -EINVAL;
788
789 if (!(ioc->fc_data.fc_port_page1[portnum].data))
790 return -EINVAL;
791
792 /* get fcport page 1 header */
793 hdr.PageVersion = 0;
794 hdr.PageLength = 0;
795 hdr.PageNumber = 1;
796 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
797 cfg.cfghdr.hdr = &hdr;
798 cfg.physAddr = -1;
799 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
800 cfg.dir = 0;
801 cfg.pageAddr = portnum;
802 cfg.timeout = 0;
803
804 if ((rc = mpt_config(ioc, &cfg)) != 0)
805 return rc;
806
807 if (hdr.PageLength == 0)
808 return -ENODEV;
809
810 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
811 return -EINVAL;
812
813 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
814 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
815 cfg.dir = 1;
816
817 rc = mpt_config(ioc, &cfg);
818
819 return rc;
820 }
821
822 static int
823 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
824 {
825 ConfigPageHeader_t hdr;
826 CONFIGPARMS cfg;
827 FCPortPage1_t *page1_alloc;
828 dma_addr_t page1_dma;
829 int data_sz;
830 int rc;
831
832 if (portnum > 1)
833 return -EINVAL;
834
835 /* get fcport page 1 header */
836 hdr.PageVersion = 0;
837 hdr.PageLength = 0;
838 hdr.PageNumber = 1;
839 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
840 cfg.cfghdr.hdr = &hdr;
841 cfg.physAddr = -1;
842 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
843 cfg.dir = 0;
844 cfg.pageAddr = portnum;
845 cfg.timeout = 0;
846
847 if ((rc = mpt_config(ioc, &cfg)) != 0)
848 return rc;
849
850 if (hdr.PageLength == 0)
851 return -ENODEV;
852
853 start_over:
854
855 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
856 data_sz = hdr.PageLength * 4;
857 if (data_sz < sizeof(FCPortPage1_t))
858 data_sz = sizeof(FCPortPage1_t);
859
860 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
861 data_sz,
862 &page1_dma);
863 if (!page1_alloc)
864 return -ENOMEM;
865 }
866 else {
867 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
868 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
869 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
870 if (hdr.PageLength * 4 > data_sz) {
871 ioc->fc_data.fc_port_page1[portnum].data = NULL;
872 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
873 page1_alloc, page1_dma);
874 goto start_over;
875 }
876 }
877
878 memset(page1_alloc,0,data_sz);
879
880 cfg.physAddr = page1_dma;
881 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
882
883 if ((rc = mpt_config(ioc, &cfg)) == 0) {
884 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
885 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
886 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
887 }
888 else {
889 ioc->fc_data.fc_port_page1[portnum].data = NULL;
890 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
891 page1_alloc, page1_dma);
892 }
893
894 return rc;
895 }
896
897 static void
898 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
899 {
900 int ii;
901 FCPortPage1_t *pp1;
902
903 #define MPTFC_FW_DEVICE_TIMEOUT (1)
904 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
905 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
906 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
907
908 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
909 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
910 continue;
911 pp1 = ioc->fc_data.fc_port_page1[ii].data;
912 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
913 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
914 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
915 && ((pp1->Flags & OFF_FLAGS) == 0))
916 continue;
917 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
918 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
919 pp1->Flags &= ~OFF_FLAGS;
920 pp1->Flags |= ON_FLAGS;
921 mptfc_WriteFcPortPage1(ioc, ii);
922 }
923 }
924
925
926 static void
927 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
928 {
929 unsigned class = 0;
930 unsigned cos = 0;
931 unsigned speed;
932 unsigned port_type;
933 unsigned port_state;
934 FCPortPage0_t *pp0;
935 struct Scsi_Host *sh;
936 char *sn;
937
938 /* don't know what to do as only one scsi (fc) host was allocated */
939 if (portnum != 0)
940 return;
941
942 pp0 = &ioc->fc_port_page0[portnum];
943 sh = ioc->sh;
944
945 sn = fc_host_symbolic_name(sh);
946 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
947 ioc->prod_name,
948 MPT_FW_REV_MAGIC_ID_STRING,
949 ioc->facts.FWVersion.Word);
950
951 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
952
953 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
954
955 fc_host_node_name(sh) =
956 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
957
958 fc_host_port_name(sh) =
959 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
960
961 fc_host_port_id(sh) = pp0->PortIdentifier;
962
963 class = pp0->SupportedServiceClass;
964 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
965 cos |= FC_COS_CLASS1;
966 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
967 cos |= FC_COS_CLASS2;
968 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
969 cos |= FC_COS_CLASS3;
970 fc_host_supported_classes(sh) = cos;
971
972 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
973 speed = FC_PORTSPEED_1GBIT;
974 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
975 speed = FC_PORTSPEED_2GBIT;
976 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
977 speed = FC_PORTSPEED_4GBIT;
978 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
979 speed = FC_PORTSPEED_10GBIT;
980 else
981 speed = FC_PORTSPEED_UNKNOWN;
982 fc_host_speed(sh) = speed;
983
984 speed = 0;
985 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
986 speed |= FC_PORTSPEED_1GBIT;
987 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
988 speed |= FC_PORTSPEED_2GBIT;
989 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
990 speed |= FC_PORTSPEED_4GBIT;
991 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
992 speed |= FC_PORTSPEED_10GBIT;
993 fc_host_supported_speeds(sh) = speed;
994
995 port_state = FC_PORTSTATE_UNKNOWN;
996 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
997 port_state = FC_PORTSTATE_ONLINE;
998 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
999 port_state = FC_PORTSTATE_LINKDOWN;
1000 fc_host_port_state(sh) = port_state;
1001
1002 port_type = FC_PORTTYPE_UNKNOWN;
1003 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1004 port_type = FC_PORTTYPE_PTP;
1005 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1006 port_type = FC_PORTTYPE_LPORT;
1007 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1008 port_type = FC_PORTTYPE_NLPORT;
1009 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1010 port_type = FC_PORTTYPE_NPORT;
1011 fc_host_port_type(sh) = port_type;
1012
1013 fc_host_fabric_name(sh) =
1014 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1015 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1016 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1017
1018 }
1019
1020 static void
1021 mptfc_setup_reset(void *arg)
1022 {
1023 MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
1024 u64 pn;
1025 struct mptfc_rport_info *ri;
1026
1027 /* reset about to happen, delete (block) all rports */
1028 list_for_each_entry(ri, &ioc->fc_rports, list) {
1029 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1030 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1031 fc_remote_port_delete(ri->rport); /* won't sleep */
1032 ri->rport = NULL;
1033
1034 pn = (u64)ri->pg0.WWPN.High << 32 |
1035 (u64)ri->pg0.WWPN.Low;
1036 dfcprintk ((MYIOC_s_INFO_FMT
1037 "mptfc_setup_reset.%d: %llx deleted\n",
1038 ioc->name,
1039 ioc->sh->host_no,
1040 (unsigned long long)pn));
1041 }
1042 }
1043 }
1044
1045 static void
1046 mptfc_rescan_devices(void *arg)
1047 {
1048 MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
1049 int ii;
1050 u64 pn;
1051 struct mptfc_rport_info *ri;
1052
1053 /* start by tagging all ports as missing */
1054 list_for_each_entry(ri, &ioc->fc_rports, list) {
1055 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1056 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1057 }
1058 }
1059
1060 /*
1061 * now rescan devices known to adapter,
1062 * will reregister existing rports
1063 */
1064 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1065 (void) mptfc_GetFcPortPage0(ioc, ii);
1066 mptfc_init_host_attr(ioc, ii); /* refresh */
1067 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1068 }
1069
1070 /* delete devices still missing */
1071 list_for_each_entry(ri, &ioc->fc_rports, list) {
1072 /* if newly missing, delete it */
1073 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1074
1075 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1076 MPT_RPORT_INFO_FLAGS_MISSING);
1077 fc_remote_port_delete(ri->rport); /* won't sleep */
1078 ri->rport = NULL;
1079
1080 pn = (u64)ri->pg0.WWPN.High << 32 |
1081 (u64)ri->pg0.WWPN.Low;
1082 dfcprintk ((MYIOC_s_INFO_FMT
1083 "mptfc_rescan.%d: %llx deleted\n",
1084 ioc->name,
1085 ioc->sh->host_no,
1086 (unsigned long long)pn));
1087 }
1088 }
1089 }
1090
1091 static int
1092 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1093 {
1094 struct Scsi_Host *sh;
1095 MPT_SCSI_HOST *hd;
1096 MPT_ADAPTER *ioc;
1097 unsigned long flags;
1098 int ii;
1099 int numSGE = 0;
1100 int scale;
1101 int ioc_cap;
1102 int error=0;
1103 int r;
1104
1105 if ((r = mpt_attach(pdev,id)) != 0)
1106 return r;
1107
1108 ioc = pci_get_drvdata(pdev);
1109 ioc->DoneCtx = mptfcDoneCtx;
1110 ioc->TaskCtx = mptfcTaskCtx;
1111 ioc->InternalCtx = mptfcInternalCtx;
1112
1113 /* Added sanity check on readiness of the MPT adapter.
1114 */
1115 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1116 printk(MYIOC_s_WARN_FMT
1117 "Skipping because it's not operational!\n",
1118 ioc->name);
1119 error = -ENODEV;
1120 goto out_mptfc_probe;
1121 }
1122
1123 if (!ioc->active) {
1124 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1125 ioc->name);
1126 error = -ENODEV;
1127 goto out_mptfc_probe;
1128 }
1129
1130 /* Sanity check - ensure at least 1 port is INITIATOR capable
1131 */
1132 ioc_cap = 0;
1133 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1134 if (ioc->pfacts[ii].ProtocolFlags &
1135 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1136 ioc_cap ++;
1137 }
1138
1139 if (!ioc_cap) {
1140 printk(MYIOC_s_WARN_FMT
1141 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1142 ioc->name, ioc);
1143 return -ENODEV;
1144 }
1145
1146 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1147
1148 if (!sh) {
1149 printk(MYIOC_s_WARN_FMT
1150 "Unable to register controller with SCSI subsystem\n",
1151 ioc->name);
1152 error = -1;
1153 goto out_mptfc_probe;
1154 }
1155
1156 spin_lock_init(&ioc->fc_rescan_work_lock);
1157 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc);
1158 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset, (void *)ioc);
1159
1160 spin_lock_irqsave(&ioc->FreeQlock, flags);
1161
1162 /* Attach the SCSI Host to the IOC structure
1163 */
1164 ioc->sh = sh;
1165
1166 sh->io_port = 0;
1167 sh->n_io_port = 0;
1168 sh->irq = 0;
1169
1170 /* set 16 byte cdb's */
1171 sh->max_cmd_len = 16;
1172
1173 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
1174
1175 sh->max_lun = MPT_LAST_LUN + 1;
1176 sh->max_channel = 0;
1177 sh->this_id = ioc->pfacts[0].PortSCSIID;
1178
1179 /* Required entry.
1180 */
1181 sh->unique_id = ioc->id;
1182
1183 /* Verify that we won't exceed the maximum
1184 * number of chain buffers
1185 * We can optimize: ZZ = req_sz/sizeof(SGE)
1186 * For 32bit SGE's:
1187 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1188 * + (req_sz - 64)/sizeof(SGE)
1189 * A slightly different algorithm is required for
1190 * 64bit SGEs.
1191 */
1192 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
1193 if (sizeof(dma_addr_t) == sizeof(u64)) {
1194 numSGE = (scale - 1) *
1195 (ioc->facts.MaxChainDepth-1) + scale +
1196 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
1197 sizeof(u32));
1198 } else {
1199 numSGE = 1 + (scale - 1) *
1200 (ioc->facts.MaxChainDepth-1) + scale +
1201 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
1202 sizeof(u32));
1203 }
1204
1205 if (numSGE < sh->sg_tablesize) {
1206 /* Reset this value */
1207 dprintk((MYIOC_s_INFO_FMT
1208 "Resetting sg_tablesize to %d from %d\n",
1209 ioc->name, numSGE, sh->sg_tablesize));
1210 sh->sg_tablesize = numSGE;
1211 }
1212
1213 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1214
1215 hd = (MPT_SCSI_HOST *) sh->hostdata;
1216 hd->ioc = ioc;
1217
1218 /* SCSI needs scsi_cmnd lookup table!
1219 * (with size equal to req_depth*PtrSz!)
1220 */
1221 hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1222 if (!hd->ScsiLookup) {
1223 error = -ENOMEM;
1224 goto out_mptfc_probe;
1225 }
1226
1227 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
1228 ioc->name, hd->ScsiLookup));
1229
1230 /* Allocate memory for the device structures.
1231 * A non-Null pointer at an offset
1232 * indicates a device exists.
1233 * max_id = 1 + maximum id (hosts.h)
1234 */
1235 hd->Targets = kcalloc(sh->max_id, sizeof(void *), GFP_ATOMIC);
1236 if (!hd->Targets) {
1237 error = -ENOMEM;
1238 goto out_mptfc_probe;
1239 }
1240
1241 dprintk((KERN_INFO " vdev @ %p\n", hd->Targets));
1242
1243 /* Clear the TM flags
1244 */
1245 hd->tmPending = 0;
1246 hd->tmState = TM_STATE_NONE;
1247 hd->resetPending = 0;
1248 hd->abortSCpnt = NULL;
1249
1250 /* Clear the pointer used to store
1251 * single-threaded commands, i.e., those
1252 * issued during a bus scan, dv and
1253 * configuration pages.
1254 */
1255 hd->cmdPtr = NULL;
1256
1257 /* Initialize this SCSI Hosts' timers
1258 * To use, set the timer expires field
1259 * and add_timer
1260 */
1261 init_timer(&hd->timer);
1262 hd->timer.data = (unsigned long) hd;
1263 hd->timer.function = mptscsih_timer_expired;
1264
1265 init_waitqueue_head(&hd->scandv_waitq);
1266 hd->scandv_wait_done = 0;
1267 hd->last_queue_full = 0;
1268
1269 sh->transportt = mptfc_transport_template;
1270 error = scsi_add_host (sh, &ioc->pcidev->dev);
1271 if(error) {
1272 dprintk((KERN_ERR MYNAM
1273 "scsi_add_host failed\n"));
1274 goto out_mptfc_probe;
1275 }
1276
1277 /* initialize workqueue */
1278
1279 snprintf(ioc->fc_rescan_work_q_name, KOBJ_NAME_LEN, "mptfc_wq_%d",
1280 sh->host_no);
1281 ioc->fc_rescan_work_q =
1282 create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
1283 if (!ioc->fc_rescan_work_q)
1284 goto out_mptfc_probe;
1285
1286 /*
1287 * Pre-fetch FC port WWN and stuff...
1288 * (FCPortPage0_t stuff)
1289 */
1290 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1291 (void) mptfc_GetFcPortPage0(ioc, ii);
1292 }
1293 mptfc_SetFcPortPage1_defaults(ioc);
1294
1295 /*
1296 * scan for rports -
1297 * by doing it via the workqueue, some locking is eliminated
1298 */
1299
1300 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1301 flush_workqueue(ioc->fc_rescan_work_q);
1302
1303 return 0;
1304
1305 out_mptfc_probe:
1306
1307 mptscsih_remove(pdev);
1308 return error;
1309 }
1310
1311 static struct pci_driver mptfc_driver = {
1312 .name = "mptfc",
1313 .id_table = mptfc_pci_table,
1314 .probe = mptfc_probe,
1315 .remove = __devexit_p(mptfc_remove),
1316 .shutdown = mptscsih_shutdown,
1317 #ifdef CONFIG_PM
1318 .suspend = mptscsih_suspend,
1319 .resume = mptscsih_resume,
1320 #endif
1321 };
1322
1323 static int
1324 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1325 {
1326 MPT_SCSI_HOST *hd;
1327 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1328 unsigned long flags;
1329 int rc=1;
1330
1331 devtverboseprintk((MYIOC_s_INFO_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1332 ioc->name, event));
1333
1334 if (ioc->sh == NULL ||
1335 ((hd = (MPT_SCSI_HOST *)ioc->sh->hostdata) == NULL))
1336 return 1;
1337
1338 switch (event) {
1339 case MPI_EVENT_RESCAN:
1340 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1341 if (ioc->fc_rescan_work_q) {
1342 queue_work(ioc->fc_rescan_work_q,
1343 &ioc->fc_rescan_work);
1344 }
1345 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1346 break;
1347 default:
1348 rc = mptscsih_event_process(ioc,pEvReply);
1349 break;
1350 }
1351 return rc;
1352 }
1353
1354 static int
1355 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1356 {
1357 int rc;
1358 unsigned long flags;
1359
1360 rc = mptscsih_ioc_reset(ioc,reset_phase);
1361 if (rc == 0)
1362 return rc;
1363
1364
1365 dtmprintk((KERN_WARNING MYNAM
1366 ": IOC %s_reset routed to FC host driver!\n",
1367 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1368 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1369
1370 if (reset_phase == MPT_IOC_SETUP_RESET) {
1371 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1372 if (ioc->fc_rescan_work_q) {
1373 queue_work(ioc->fc_rescan_work_q,
1374 &ioc->fc_setup_reset_work);
1375 }
1376 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1377 }
1378
1379 else if (reset_phase == MPT_IOC_PRE_RESET) {
1380 }
1381
1382 else { /* MPT_IOC_POST_RESET */
1383 mptfc_SetFcPortPage1_defaults(ioc);
1384 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1385 if (ioc->fc_rescan_work_q) {
1386 queue_work(ioc->fc_rescan_work_q,
1387 &ioc->fc_rescan_work);
1388 }
1389 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1390 }
1391 return 1;
1392 }
1393
1394 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1395 /**
1396 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
1397 * linux scsi mid-layer.
1398 *
1399 * Returns 0 for success, non-zero for failure.
1400 */
1401 static int __init
1402 mptfc_init(void)
1403 {
1404 int error;
1405
1406 show_mptmod_ver(my_NAME, my_VERSION);
1407
1408 /* sanity check module parameters */
1409 if (mptfc_dev_loss_tmo <= 0)
1410 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1411
1412 mptfc_transport_template =
1413 fc_attach_transport(&mptfc_transport_functions);
1414
1415 if (!mptfc_transport_template)
1416 return -ENODEV;
1417
1418 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
1419 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
1420 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
1421
1422 if (mpt_event_register(mptfcDoneCtx, mptfc_event_process) == 0) {
1423 devtverboseprintk((KERN_INFO MYNAM
1424 ": Registered for IOC event notifications\n"));
1425 }
1426
1427 if (mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset) == 0) {
1428 dprintk((KERN_INFO MYNAM
1429 ": Registered for IOC reset notifications\n"));
1430 }
1431
1432 error = pci_register_driver(&mptfc_driver);
1433 if (error)
1434 fc_release_transport(mptfc_transport_template);
1435
1436 return error;
1437 }
1438
1439 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1440 /**
1441 * mptfc_remove - Removed fc infrastructure for devices
1442 * @pdev: Pointer to pci_dev structure
1443 *
1444 */
1445 static void __devexit
1446 mptfc_remove(struct pci_dev *pdev)
1447 {
1448 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1449 struct mptfc_rport_info *p, *n;
1450 struct workqueue_struct *work_q;
1451 unsigned long flags;
1452 int ii;
1453
1454 /* destroy workqueue */
1455 if ((work_q=ioc->fc_rescan_work_q)) {
1456 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1457 ioc->fc_rescan_work_q = NULL;
1458 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1459 destroy_workqueue(work_q);
1460 }
1461
1462 fc_remove_host(ioc->sh);
1463
1464 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1465 list_del(&p->list);
1466 kfree(p);
1467 }
1468
1469 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1470 if (ioc->fc_data.fc_port_page1[ii].data) {
1471 pci_free_consistent(ioc->pcidev,
1472 ioc->fc_data.fc_port_page1[ii].pg_sz,
1473 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1474 ioc->fc_data.fc_port_page1[ii].dma);
1475 ioc->fc_data.fc_port_page1[ii].data = NULL;
1476 }
1477 }
1478
1479 mptscsih_remove(pdev);
1480 }
1481
1482 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1483 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1484 /**
1485 * mptfc_exit - Unregisters MPT adapter(s)
1486 *
1487 */
1488 static void __exit
1489 mptfc_exit(void)
1490 {
1491 pci_unregister_driver(&mptfc_driver);
1492 fc_release_transport(mptfc_transport_template);
1493
1494 mpt_reset_deregister(mptfcDoneCtx);
1495 dprintk((KERN_INFO MYNAM
1496 ": Deregistered for IOC reset notifications\n"));
1497
1498 mpt_event_deregister(mptfcDoneCtx);
1499 dprintk((KERN_INFO MYNAM
1500 ": Deregistered for IOC event notifications\n"));
1501
1502 mpt_deregister(mptfcInternalCtx);
1503 mpt_deregister(mptfcTaskCtx);
1504 mpt_deregister(mptfcDoneCtx);
1505 }
1506
1507 module_init(mptfc_init);
1508 module_exit(mptfc_exit);
Linux kernel - Deliverables
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