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Merge branches 'for-4.11/upstream-fixes', 'for-4.12/accutouch', 'for-4.12/cp2112...
[mirror_ubuntu-artful-kernel.git] / drivers / message / fusion / mptfc.c
1 /*
2 * linux/drivers/message/fusion/mptfc.c
3 * For use with LSI PCI chip/adapter(s)
4 * running LSI Fusion MPT (Message Passing Technology) firmware.
5 *
6 * Copyright (c) 1999-2008 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.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/module.h>
47 #include <linux/kernel.h>
48 #include <linux/init.h>
49 #include <linux/errno.h>
50 #include <linux/kdev_t.h>
51 #include <linux/blkdev.h>
52 #include <linux/delay.h> /* for mdelay */
53 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
54 #include <linux/reboot.h> /* notifier code */
55 #include <linux/workqueue.h>
56 #include <linux/sort.h>
57 #include <linux/slab.h>
58
59 #include <scsi/scsi.h>
60 #include <scsi/scsi_cmnd.h>
61 #include <scsi/scsi_device.h>
62 #include <scsi/scsi_host.h>
63 #include <scsi/scsi_tcq.h>
64 #include <scsi/scsi_transport_fc.h>
65
66 #include "mptbase.h"
67 #include "mptscsih.h"
68
69 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
70 #define my_NAME "Fusion MPT FC Host driver"
71 #define my_VERSION MPT_LINUX_VERSION_COMMON
72 #define MYNAM "mptfc"
73
74 MODULE_AUTHOR(MODULEAUTHOR);
75 MODULE_DESCRIPTION(my_NAME);
76 MODULE_LICENSE("GPL");
77 MODULE_VERSION(my_VERSION);
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 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
89 #define MPTFC_MAX_LUN (16895)
90 static int max_lun = MPTFC_MAX_LUN;
91 module_param(max_lun, int, 0);
92 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
93
94 static u8 mptfcDoneCtx = MPT_MAX_PROTOCOL_DRIVERS;
95 static u8 mptfcTaskCtx = MPT_MAX_PROTOCOL_DRIVERS;
96 static u8 mptfcInternalCtx = MPT_MAX_PROTOCOL_DRIVERS;
97
98 static int mptfc_target_alloc(struct scsi_target *starget);
99 static int mptfc_slave_alloc(struct scsi_device *sdev);
100 static int mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt);
101 static void mptfc_target_destroy(struct scsi_target *starget);
102 static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
103 static void mptfc_remove(struct pci_dev *pdev);
104 static int mptfc_abort(struct scsi_cmnd *SCpnt);
105 static int mptfc_dev_reset(struct scsi_cmnd *SCpnt);
106 static int mptfc_bus_reset(struct scsi_cmnd *SCpnt);
107 static int mptfc_host_reset(struct scsi_cmnd *SCpnt);
108
109 static struct scsi_host_template mptfc_driver_template = {
110 .module = THIS_MODULE,
111 .proc_name = "mptfc",
112 .show_info = mptscsih_show_info,
113 .name = "MPT FC Host",
114 .info = mptscsih_info,
115 .queuecommand = mptfc_qcmd,
116 .target_alloc = mptfc_target_alloc,
117 .slave_alloc = mptfc_slave_alloc,
118 .slave_configure = mptscsih_slave_configure,
119 .target_destroy = mptfc_target_destroy,
120 .slave_destroy = mptscsih_slave_destroy,
121 .change_queue_depth = mptscsih_change_queue_depth,
122 .eh_timed_out = fc_eh_timed_out,
123 .eh_abort_handler = mptfc_abort,
124 .eh_device_reset_handler = mptfc_dev_reset,
125 .eh_bus_reset_handler = mptfc_bus_reset,
126 .eh_host_reset_handler = mptfc_host_reset,
127 .bios_param = mptscsih_bios_param,
128 .can_queue = MPT_FC_CAN_QUEUE,
129 .this_id = -1,
130 .sg_tablesize = MPT_SCSI_SG_DEPTH,
131 .max_sectors = 8192,
132 .cmd_per_lun = 7,
133 .use_clustering = ENABLE_CLUSTERING,
134 .shost_attrs = mptscsih_host_attrs,
135 };
136
137 /****************************************************************************
138 * Supported hardware
139 */
140
141 static struct pci_device_id mptfc_pci_table[] = {
142 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
143 PCI_ANY_ID, PCI_ANY_ID },
144 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
145 PCI_ANY_ID, PCI_ANY_ID },
146 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
147 PCI_ANY_ID, PCI_ANY_ID },
148 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
149 PCI_ANY_ID, PCI_ANY_ID },
150 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
151 PCI_ANY_ID, PCI_ANY_ID },
152 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
153 PCI_ANY_ID, PCI_ANY_ID },
154 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
155 PCI_ANY_ID, PCI_ANY_ID },
156 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
157 PCI_ANY_ID, PCI_ANY_ID },
158 { PCI_VENDOR_ID_BROCADE, MPI_MANUFACTPAGE_DEVICEID_FC949E,
159 PCI_ANY_ID, PCI_ANY_ID },
160 {0} /* Terminating entry */
161 };
162 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
163
164 static struct scsi_transport_template *mptfc_transport_template = NULL;
165
166 static struct fc_function_template mptfc_transport_functions = {
167 .dd_fcrport_size = 8,
168 .show_host_node_name = 1,
169 .show_host_port_name = 1,
170 .show_host_supported_classes = 1,
171 .show_host_port_id = 1,
172 .show_rport_supported_classes = 1,
173 .show_starget_node_name = 1,
174 .show_starget_port_name = 1,
175 .show_starget_port_id = 1,
176 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
177 .show_rport_dev_loss_tmo = 1,
178 .show_host_supported_speeds = 1,
179 .show_host_maxframe_size = 1,
180 .show_host_speed = 1,
181 .show_host_fabric_name = 1,
182 .show_host_port_type = 1,
183 .show_host_port_state = 1,
184 .show_host_symbolic_name = 1,
185 };
186
187 static int
188 mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
189 int (*func)(struct scsi_cmnd *SCpnt),
190 const char *caller)
191 {
192 MPT_SCSI_HOST *hd;
193 struct scsi_device *sdev = SCpnt->device;
194 struct Scsi_Host *shost = sdev->host;
195 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
196 unsigned long flags;
197 int ready;
198 MPT_ADAPTER *ioc;
199 int loops = 40; /* seconds */
200
201 hd = shost_priv(SCpnt->device->host);
202 ioc = hd->ioc;
203 spin_lock_irqsave(shost->host_lock, flags);
204 while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY
205 || (loops > 0 && ioc->active == 0)) {
206 spin_unlock_irqrestore(shost->host_lock, flags);
207 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
208 "mptfc_block_error_handler.%d: %d:%llu, port status is "
209 "%x, active flag %d, deferring %s recovery.\n",
210 ioc->name, ioc->sh->host_no,
211 SCpnt->device->id, SCpnt->device->lun,
212 ready, ioc->active, caller));
213 msleep(1000);
214 spin_lock_irqsave(shost->host_lock, flags);
215 loops --;
216 }
217 spin_unlock_irqrestore(shost->host_lock, flags);
218
219 if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata
220 || ioc->active == 0) {
221 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
222 "%s.%d: %d:%llu, failing recovery, "
223 "port state %x, active %d, vdevice %p.\n", caller,
224 ioc->name, ioc->sh->host_no,
225 SCpnt->device->id, SCpnt->device->lun, ready,
226 ioc->active, SCpnt->device->hostdata));
227 return FAILED;
228 }
229 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
230 "%s.%d: %d:%llu, executing recovery.\n", caller,
231 ioc->name, ioc->sh->host_no,
232 SCpnt->device->id, SCpnt->device->lun));
233 return (*func)(SCpnt);
234 }
235
236 static int
237 mptfc_abort(struct scsi_cmnd *SCpnt)
238 {
239 return
240 mptfc_block_error_handler(SCpnt, mptscsih_abort, __func__);
241 }
242
243 static int
244 mptfc_dev_reset(struct scsi_cmnd *SCpnt)
245 {
246 return
247 mptfc_block_error_handler(SCpnt, mptscsih_dev_reset, __func__);
248 }
249
250 static int
251 mptfc_bus_reset(struct scsi_cmnd *SCpnt)
252 {
253 return
254 mptfc_block_error_handler(SCpnt, mptscsih_bus_reset, __func__);
255 }
256
257 static int
258 mptfc_host_reset(struct scsi_cmnd *SCpnt)
259 {
260 return
261 mptfc_block_error_handler(SCpnt, mptscsih_host_reset, __func__);
262 }
263
264 static void
265 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
266 {
267 if (timeout > 0)
268 rport->dev_loss_tmo = timeout;
269 else
270 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
271 }
272
273 static int
274 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
275 {
276 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
277 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
278
279 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
280 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
281 return 0;
282 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
283 return -1;
284 return 1;
285 }
286 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
287 return -1;
288 return 1;
289 }
290
291 static int
292 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
293 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
294 {
295 ConfigPageHeader_t hdr;
296 CONFIGPARMS cfg;
297 FCDevicePage0_t *ppage0_alloc, *fc;
298 dma_addr_t page0_dma;
299 int data_sz;
300 int ii;
301
302 FCDevicePage0_t *p0_array=NULL, *p_p0;
303 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
304
305 int rc = -ENOMEM;
306 U32 port_id = 0xffffff;
307 int num_targ = 0;
308 int max_bus = ioc->facts.MaxBuses;
309 int max_targ;
310
311 max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;
312
313 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
314 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
315 if (!p0_array)
316 goto out;
317
318 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
319 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
320 if (!pp0_array)
321 goto out;
322
323 do {
324 /* Get FC Device Page 0 header */
325 hdr.PageVersion = 0;
326 hdr.PageLength = 0;
327 hdr.PageNumber = 0;
328 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
329 cfg.cfghdr.hdr = &hdr;
330 cfg.physAddr = -1;
331 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
332 cfg.dir = 0;
333 cfg.pageAddr = port_id;
334 cfg.timeout = 0;
335
336 if ((rc = mpt_config(ioc, &cfg)) != 0)
337 break;
338
339 if (hdr.PageLength <= 0)
340 break;
341
342 data_sz = hdr.PageLength * 4;
343 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
344 &page0_dma);
345 rc = -ENOMEM;
346 if (!ppage0_alloc)
347 break;
348
349 cfg.physAddr = page0_dma;
350 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
351
352 if ((rc = mpt_config(ioc, &cfg)) == 0) {
353 ppage0_alloc->PortIdentifier =
354 le32_to_cpu(ppage0_alloc->PortIdentifier);
355
356 ppage0_alloc->WWNN.Low =
357 le32_to_cpu(ppage0_alloc->WWNN.Low);
358
359 ppage0_alloc->WWNN.High =
360 le32_to_cpu(ppage0_alloc->WWNN.High);
361
362 ppage0_alloc->WWPN.Low =
363 le32_to_cpu(ppage0_alloc->WWPN.Low);
364
365 ppage0_alloc->WWPN.High =
366 le32_to_cpu(ppage0_alloc->WWPN.High);
367
368 ppage0_alloc->BBCredit =
369 le16_to_cpu(ppage0_alloc->BBCredit);
370
371 ppage0_alloc->MaxRxFrameSize =
372 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
373
374 port_id = ppage0_alloc->PortIdentifier;
375 num_targ++;
376 *p_p0 = *ppage0_alloc; /* save data */
377 *p_pp0++ = p_p0++; /* save addr */
378 }
379 pci_free_consistent(ioc->pcidev, data_sz,
380 (u8 *) ppage0_alloc, page0_dma);
381 if (rc != 0)
382 break;
383
384 } while (port_id <= 0xff0000);
385
386 if (num_targ) {
387 /* sort array */
388 if (num_targ > 1)
389 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
390 mptfc_FcDevPage0_cmp_func, NULL);
391 /* call caller's func for each targ */
392 for (ii = 0; ii < num_targ; ii++) {
393 fc = *(pp0_array+ii);
394 func(ioc, ioc_port, fc);
395 }
396 }
397
398 out:
399 kfree(pp0_array);
400 kfree(p0_array);
401 return rc;
402 }
403
404 static int
405 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
406 {
407 /* not currently usable */
408 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
409 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
410 return -1;
411
412 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
413 return -1;
414
415 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
416 return -1;
417
418 /*
419 * board data structure already normalized to platform endianness
420 * shifted to avoid unaligned access on 64 bit architecture
421 */
422 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
423 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
424 rid->port_id = pg0->PortIdentifier;
425 rid->roles = FC_RPORT_ROLE_UNKNOWN;
426
427 return 0;
428 }
429
430 static void
431 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
432 {
433 struct fc_rport_identifiers rport_ids;
434 struct fc_rport *rport;
435 struct mptfc_rport_info *ri;
436 int new_ri = 1;
437 u64 pn, nn;
438 VirtTarget *vtarget;
439 u32 roles = FC_RPORT_ROLE_UNKNOWN;
440
441 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
442 return;
443
444 roles |= FC_RPORT_ROLE_FCP_TARGET;
445 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
446 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
447
448 /* scan list looking for a match */
449 list_for_each_entry(ri, &ioc->fc_rports, list) {
450 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
451 if (pn == rport_ids.port_name) { /* match */
452 list_move_tail(&ri->list, &ioc->fc_rports);
453 new_ri = 0;
454 break;
455 }
456 }
457 if (new_ri) { /* allocate one */
458 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
459 if (!ri)
460 return;
461 list_add_tail(&ri->list, &ioc->fc_rports);
462 }
463
464 ri->pg0 = *pg0; /* add/update pg0 data */
465 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
466
467 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
468 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
469 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
470 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
471 if (rport) {
472 ri->rport = rport;
473 if (new_ri) /* may have been reset by user */
474 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
475 /*
476 * if already mapped, remap here. If not mapped,
477 * target_alloc will allocate vtarget and map,
478 * slave_alloc will fill in vdevice from vtarget.
479 */
480 if (ri->starget) {
481 vtarget = ri->starget->hostdata;
482 if (vtarget) {
483 vtarget->id = pg0->CurrentTargetID;
484 vtarget->channel = pg0->CurrentBus;
485 vtarget->deleted = 0;
486 }
487 }
488 *((struct mptfc_rport_info **)rport->dd_data) = ri;
489 /* scan will be scheduled once rport becomes a target */
490 fc_remote_port_rolechg(rport,roles);
491
492 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
493 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
494 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
495 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
496 "rport tid %d, tmo %d\n",
497 ioc->name,
498 ioc->sh->host_no,
499 pg0->PortIdentifier,
500 (unsigned long long)nn,
501 (unsigned long long)pn,
502 pg0->CurrentTargetID,
503 ri->rport->scsi_target_id,
504 ri->rport->dev_loss_tmo));
505 } else {
506 list_del(&ri->list);
507 kfree(ri);
508 ri = NULL;
509 }
510 }
511 }
512
513 /*
514 * OS entry point to allow for host driver to free allocated memory
515 * Called if no device present or device being unloaded
516 */
517 static void
518 mptfc_target_destroy(struct scsi_target *starget)
519 {
520 struct fc_rport *rport;
521 struct mptfc_rport_info *ri;
522
523 rport = starget_to_rport(starget);
524 if (rport) {
525 ri = *((struct mptfc_rport_info **)rport->dd_data);
526 if (ri) /* better be! */
527 ri->starget = NULL;
528 }
529 kfree(starget->hostdata);
530 starget->hostdata = NULL;
531 }
532
533 /*
534 * OS entry point to allow host driver to alloc memory
535 * for each scsi target. Called once per device the bus scan.
536 * Return non-zero if allocation fails.
537 */
538 static int
539 mptfc_target_alloc(struct scsi_target *starget)
540 {
541 VirtTarget *vtarget;
542 struct fc_rport *rport;
543 struct mptfc_rport_info *ri;
544 int rc;
545
546 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
547 if (!vtarget)
548 return -ENOMEM;
549 starget->hostdata = vtarget;
550
551 rc = -ENODEV;
552 rport = starget_to_rport(starget);
553 if (rport) {
554 ri = *((struct mptfc_rport_info **)rport->dd_data);
555 if (ri) { /* better be! */
556 vtarget->id = ri->pg0.CurrentTargetID;
557 vtarget->channel = ri->pg0.CurrentBus;
558 ri->starget = starget;
559 rc = 0;
560 }
561 }
562 if (rc != 0) {
563 kfree(vtarget);
564 starget->hostdata = NULL;
565 }
566
567 return rc;
568 }
569 /*
570 * mptfc_dump_lun_info
571 * @ioc
572 * @rport
573 * @sdev
574 *
575 */
576 static void
577 mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
578 VirtTarget *vtarget)
579 {
580 u64 nn, pn;
581 struct mptfc_rport_info *ri;
582
583 ri = *((struct mptfc_rport_info **)rport->dd_data);
584 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
585 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
586 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
587 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
588 "CurrentTargetID %d, %x %llx %llx\n",
589 ioc->name,
590 sdev->host->host_no,
591 vtarget->num_luns,
592 sdev->id, ri->pg0.CurrentTargetID,
593 ri->pg0.PortIdentifier,
594 (unsigned long long)pn,
595 (unsigned long long)nn));
596 }
597
598
599 /*
600 * OS entry point to allow host driver to alloc memory
601 * for each scsi device. Called once per device the bus scan.
602 * Return non-zero if allocation fails.
603 * Init memory once per LUN.
604 */
605 static int
606 mptfc_slave_alloc(struct scsi_device *sdev)
607 {
608 MPT_SCSI_HOST *hd;
609 VirtTarget *vtarget;
610 VirtDevice *vdevice;
611 struct scsi_target *starget;
612 struct fc_rport *rport;
613 MPT_ADAPTER *ioc;
614
615 starget = scsi_target(sdev);
616 rport = starget_to_rport(starget);
617
618 if (!rport || fc_remote_port_chkready(rport))
619 return -ENXIO;
620
621 hd = shost_priv(sdev->host);
622 ioc = hd->ioc;
623
624 vdevice = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
625 if (!vdevice) {
626 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
627 ioc->name, sizeof(VirtDevice));
628 return -ENOMEM;
629 }
630
631
632 sdev->hostdata = vdevice;
633 vtarget = starget->hostdata;
634
635 if (vtarget->num_luns == 0) {
636 vtarget->ioc_id = ioc->id;
637 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
638 }
639
640 vdevice->vtarget = vtarget;
641 vdevice->lun = sdev->lun;
642
643 vtarget->num_luns++;
644
645
646 mptfc_dump_lun_info(ioc, rport, sdev, vtarget);
647
648 return 0;
649 }
650
651 static int
652 mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
653 {
654 struct mptfc_rport_info *ri;
655 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
656 int err;
657 VirtDevice *vdevice = SCpnt->device->hostdata;
658
659 if (!vdevice || !vdevice->vtarget) {
660 SCpnt->result = DID_NO_CONNECT << 16;
661 SCpnt->scsi_done(SCpnt);
662 return 0;
663 }
664
665 err = fc_remote_port_chkready(rport);
666 if (unlikely(err)) {
667 SCpnt->result = err;
668 SCpnt->scsi_done(SCpnt);
669 return 0;
670 }
671
672 /* dd_data is null until finished adding target */
673 ri = *((struct mptfc_rport_info **)rport->dd_data);
674 if (unlikely(!ri)) {
675 SCpnt->result = DID_IMM_RETRY << 16;
676 SCpnt->scsi_done(SCpnt);
677 return 0;
678 }
679
680 return mptscsih_qcmd(SCpnt);
681 }
682
683 /*
684 * mptfc_display_port_link_speed - displaying link speed
685 * @ioc: Pointer to MPT_ADAPTER structure
686 * @portnum: IOC Port number
687 * @pp0dest: port page0 data payload
688 *
689 */
690 static void
691 mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
692 {
693 u8 old_speed, new_speed, state;
694 char *old, *new;
695
696 if (portnum >= 2)
697 return;
698
699 old_speed = ioc->fc_link_speed[portnum];
700 new_speed = pp0dest->CurrentSpeed;
701 state = pp0dest->PortState;
702
703 if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
704 new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UKNOWN) {
705
706 old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
707 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
708 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
709 "Unknown";
710 new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
711 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
712 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
713 "Unknown";
714 if (old_speed == 0)
715 printk(MYIOC_s_NOTE_FMT
716 "FC Link Established, Speed = %s\n",
717 ioc->name, new);
718 else if (old_speed != new_speed)
719 printk(MYIOC_s_WARN_FMT
720 "FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
721 ioc->name, old, new);
722
723 ioc->fc_link_speed[portnum] = new_speed;
724 }
725 }
726
727 /*
728 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
729 * @ioc: Pointer to MPT_ADAPTER structure
730 * @portnum: IOC Port number
731 *
732 * Return: 0 for success
733 * -ENOMEM if no memory available
734 * -EPERM if not allowed due to ISR context
735 * -EAGAIN if no msg frames currently available
736 * -EFAULT for non-successful reply or no reply (timeout)
737 * -EINVAL portnum arg out of range (hardwired to two elements)
738 */
739 static int
740 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
741 {
742 ConfigPageHeader_t hdr;
743 CONFIGPARMS cfg;
744 FCPortPage0_t *ppage0_alloc;
745 FCPortPage0_t *pp0dest;
746 dma_addr_t page0_dma;
747 int data_sz;
748 int copy_sz;
749 int rc;
750 int count = 400;
751
752 if (portnum > 1)
753 return -EINVAL;
754
755 /* Get FCPort Page 0 header */
756 hdr.PageVersion = 0;
757 hdr.PageLength = 0;
758 hdr.PageNumber = 0;
759 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
760 cfg.cfghdr.hdr = &hdr;
761 cfg.physAddr = -1;
762 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
763 cfg.dir = 0;
764 cfg.pageAddr = portnum;
765 cfg.timeout = 0;
766
767 if ((rc = mpt_config(ioc, &cfg)) != 0)
768 return rc;
769
770 if (hdr.PageLength == 0)
771 return 0;
772
773 data_sz = hdr.PageLength * 4;
774 rc = -ENOMEM;
775 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
776 if (ppage0_alloc) {
777
778 try_again:
779 memset((u8 *)ppage0_alloc, 0, data_sz);
780 cfg.physAddr = page0_dma;
781 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
782
783 if ((rc = mpt_config(ioc, &cfg)) == 0) {
784 /* save the data */
785 pp0dest = &ioc->fc_port_page0[portnum];
786 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
787 memcpy(pp0dest, ppage0_alloc, copy_sz);
788
789 /*
790 * Normalize endianness of structure data,
791 * by byte-swapping all > 1 byte fields!
792 */
793 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
794 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
795 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
796 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
797 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
798 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
799 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
800 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
801 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
802 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
803 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
804 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
805 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
806 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
807 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
808 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
809
810 /*
811 * if still doing discovery,
812 * hang loose a while until finished
813 */
814 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
815 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
816 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
817 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
818 if (count-- > 0) {
819 msleep(100);
820 goto try_again;
821 }
822 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
823 " complete.\n",
824 ioc->name);
825 }
826 mptfc_display_port_link_speed(ioc, portnum, pp0dest);
827 }
828
829 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
830 }
831
832 return rc;
833 }
834
835 static int
836 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
837 {
838 ConfigPageHeader_t hdr;
839 CONFIGPARMS cfg;
840 int rc;
841
842 if (portnum > 1)
843 return -EINVAL;
844
845 if (!(ioc->fc_data.fc_port_page1[portnum].data))
846 return -EINVAL;
847
848 /* get fcport page 1 header */
849 hdr.PageVersion = 0;
850 hdr.PageLength = 0;
851 hdr.PageNumber = 1;
852 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
853 cfg.cfghdr.hdr = &hdr;
854 cfg.physAddr = -1;
855 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
856 cfg.dir = 0;
857 cfg.pageAddr = portnum;
858 cfg.timeout = 0;
859
860 if ((rc = mpt_config(ioc, &cfg)) != 0)
861 return rc;
862
863 if (hdr.PageLength == 0)
864 return -ENODEV;
865
866 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
867 return -EINVAL;
868
869 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
870 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
871 cfg.dir = 1;
872
873 rc = mpt_config(ioc, &cfg);
874
875 return rc;
876 }
877
878 static int
879 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
880 {
881 ConfigPageHeader_t hdr;
882 CONFIGPARMS cfg;
883 FCPortPage1_t *page1_alloc;
884 dma_addr_t page1_dma;
885 int data_sz;
886 int rc;
887
888 if (portnum > 1)
889 return -EINVAL;
890
891 /* get fcport page 1 header */
892 hdr.PageVersion = 0;
893 hdr.PageLength = 0;
894 hdr.PageNumber = 1;
895 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
896 cfg.cfghdr.hdr = &hdr;
897 cfg.physAddr = -1;
898 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
899 cfg.dir = 0;
900 cfg.pageAddr = portnum;
901 cfg.timeout = 0;
902
903 if ((rc = mpt_config(ioc, &cfg)) != 0)
904 return rc;
905
906 if (hdr.PageLength == 0)
907 return -ENODEV;
908
909 start_over:
910
911 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
912 data_sz = hdr.PageLength * 4;
913 if (data_sz < sizeof(FCPortPage1_t))
914 data_sz = sizeof(FCPortPage1_t);
915
916 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
917 data_sz,
918 &page1_dma);
919 if (!page1_alloc)
920 return -ENOMEM;
921 }
922 else {
923 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
924 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
925 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
926 if (hdr.PageLength * 4 > data_sz) {
927 ioc->fc_data.fc_port_page1[portnum].data = NULL;
928 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
929 page1_alloc, page1_dma);
930 goto start_over;
931 }
932 }
933
934 memset(page1_alloc,0,data_sz);
935
936 cfg.physAddr = page1_dma;
937 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
938
939 if ((rc = mpt_config(ioc, &cfg)) == 0) {
940 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
941 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
942 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
943 }
944 else {
945 ioc->fc_data.fc_port_page1[portnum].data = NULL;
946 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
947 page1_alloc, page1_dma);
948 }
949
950 return rc;
951 }
952
953 static void
954 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
955 {
956 int ii;
957 FCPortPage1_t *pp1;
958
959 #define MPTFC_FW_DEVICE_TIMEOUT (1)
960 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
961 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
962 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
963
964 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
965 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
966 continue;
967 pp1 = ioc->fc_data.fc_port_page1[ii].data;
968 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
969 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
970 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
971 && ((pp1->Flags & OFF_FLAGS) == 0))
972 continue;
973 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
974 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
975 pp1->Flags &= ~OFF_FLAGS;
976 pp1->Flags |= ON_FLAGS;
977 mptfc_WriteFcPortPage1(ioc, ii);
978 }
979 }
980
981
982 static void
983 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
984 {
985 unsigned class = 0;
986 unsigned cos = 0;
987 unsigned speed;
988 unsigned port_type;
989 unsigned port_state;
990 FCPortPage0_t *pp0;
991 struct Scsi_Host *sh;
992 char *sn;
993
994 /* don't know what to do as only one scsi (fc) host was allocated */
995 if (portnum != 0)
996 return;
997
998 pp0 = &ioc->fc_port_page0[portnum];
999 sh = ioc->sh;
1000
1001 sn = fc_host_symbolic_name(sh);
1002 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
1003 ioc->prod_name,
1004 MPT_FW_REV_MAGIC_ID_STRING,
1005 ioc->facts.FWVersion.Word);
1006
1007 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
1008
1009 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
1010
1011 fc_host_node_name(sh) =
1012 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1013
1014 fc_host_port_name(sh) =
1015 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1016
1017 fc_host_port_id(sh) = pp0->PortIdentifier;
1018
1019 class = pp0->SupportedServiceClass;
1020 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1021 cos |= FC_COS_CLASS1;
1022 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1023 cos |= FC_COS_CLASS2;
1024 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1025 cos |= FC_COS_CLASS3;
1026 fc_host_supported_classes(sh) = cos;
1027
1028 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1029 speed = FC_PORTSPEED_1GBIT;
1030 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1031 speed = FC_PORTSPEED_2GBIT;
1032 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1033 speed = FC_PORTSPEED_4GBIT;
1034 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1035 speed = FC_PORTSPEED_10GBIT;
1036 else
1037 speed = FC_PORTSPEED_UNKNOWN;
1038 fc_host_speed(sh) = speed;
1039
1040 speed = 0;
1041 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1042 speed |= FC_PORTSPEED_1GBIT;
1043 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1044 speed |= FC_PORTSPEED_2GBIT;
1045 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1046 speed |= FC_PORTSPEED_4GBIT;
1047 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1048 speed |= FC_PORTSPEED_10GBIT;
1049 fc_host_supported_speeds(sh) = speed;
1050
1051 port_state = FC_PORTSTATE_UNKNOWN;
1052 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1053 port_state = FC_PORTSTATE_ONLINE;
1054 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1055 port_state = FC_PORTSTATE_LINKDOWN;
1056 fc_host_port_state(sh) = port_state;
1057
1058 port_type = FC_PORTTYPE_UNKNOWN;
1059 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1060 port_type = FC_PORTTYPE_PTP;
1061 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1062 port_type = FC_PORTTYPE_LPORT;
1063 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1064 port_type = FC_PORTTYPE_NLPORT;
1065 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1066 port_type = FC_PORTTYPE_NPORT;
1067 fc_host_port_type(sh) = port_type;
1068
1069 fc_host_fabric_name(sh) =
1070 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1071 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1072 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1073
1074 }
1075
1076 static void
1077 mptfc_link_status_change(struct work_struct *work)
1078 {
1079 MPT_ADAPTER *ioc =
1080 container_of(work, MPT_ADAPTER, fc_rescan_work);
1081 int ii;
1082
1083 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1084 (void) mptfc_GetFcPortPage0(ioc, ii);
1085
1086 }
1087
1088 static void
1089 mptfc_setup_reset(struct work_struct *work)
1090 {
1091 MPT_ADAPTER *ioc =
1092 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1093 u64 pn;
1094 struct mptfc_rport_info *ri;
1095 struct scsi_target *starget;
1096 VirtTarget *vtarget;
1097
1098 /* reset about to happen, delete (block) all rports */
1099 list_for_each_entry(ri, &ioc->fc_rports, list) {
1100 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1101 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1102 fc_remote_port_delete(ri->rport); /* won't sleep */
1103 ri->rport = NULL;
1104 starget = ri->starget;
1105 if (starget) {
1106 vtarget = starget->hostdata;
1107 if (vtarget)
1108 vtarget->deleted = 1;
1109 }
1110
1111 pn = (u64)ri->pg0.WWPN.High << 32 |
1112 (u64)ri->pg0.WWPN.Low;
1113 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1114 "mptfc_setup_reset.%d: %llx deleted\n",
1115 ioc->name,
1116 ioc->sh->host_no,
1117 (unsigned long long)pn));
1118 }
1119 }
1120 }
1121
1122 static void
1123 mptfc_rescan_devices(struct work_struct *work)
1124 {
1125 MPT_ADAPTER *ioc =
1126 container_of(work, MPT_ADAPTER, fc_rescan_work);
1127 int ii;
1128 u64 pn;
1129 struct mptfc_rport_info *ri;
1130 struct scsi_target *starget;
1131 VirtTarget *vtarget;
1132
1133 /* start by tagging all ports as missing */
1134 list_for_each_entry(ri, &ioc->fc_rports, list) {
1135 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1136 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1137 }
1138 }
1139
1140 /*
1141 * now rescan devices known to adapter,
1142 * will reregister existing rports
1143 */
1144 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1145 (void) mptfc_GetFcPortPage0(ioc, ii);
1146 mptfc_init_host_attr(ioc, ii); /* refresh */
1147 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1148 }
1149
1150 /* delete devices still missing */
1151 list_for_each_entry(ri, &ioc->fc_rports, list) {
1152 /* if newly missing, delete it */
1153 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1154
1155 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1156 MPT_RPORT_INFO_FLAGS_MISSING);
1157 fc_remote_port_delete(ri->rport); /* won't sleep */
1158 ri->rport = NULL;
1159 starget = ri->starget;
1160 if (starget) {
1161 vtarget = starget->hostdata;
1162 if (vtarget)
1163 vtarget->deleted = 1;
1164 }
1165
1166 pn = (u64)ri->pg0.WWPN.High << 32 |
1167 (u64)ri->pg0.WWPN.Low;
1168 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1169 "mptfc_rescan.%d: %llx deleted\n",
1170 ioc->name,
1171 ioc->sh->host_no,
1172 (unsigned long long)pn));
1173 }
1174 }
1175 }
1176
1177 static int
1178 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1179 {
1180 struct Scsi_Host *sh;
1181 MPT_SCSI_HOST *hd;
1182 MPT_ADAPTER *ioc;
1183 unsigned long flags;
1184 int ii;
1185 int numSGE = 0;
1186 int scale;
1187 int ioc_cap;
1188 int error=0;
1189 int r;
1190
1191 if ((r = mpt_attach(pdev,id)) != 0)
1192 return r;
1193
1194 ioc = pci_get_drvdata(pdev);
1195 ioc->DoneCtx = mptfcDoneCtx;
1196 ioc->TaskCtx = mptfcTaskCtx;
1197 ioc->InternalCtx = mptfcInternalCtx;
1198
1199 /* Added sanity check on readiness of the MPT adapter.
1200 */
1201 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1202 printk(MYIOC_s_WARN_FMT
1203 "Skipping because it's not operational!\n",
1204 ioc->name);
1205 error = -ENODEV;
1206 goto out_mptfc_probe;
1207 }
1208
1209 if (!ioc->active) {
1210 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1211 ioc->name);
1212 error = -ENODEV;
1213 goto out_mptfc_probe;
1214 }
1215
1216 /* Sanity check - ensure at least 1 port is INITIATOR capable
1217 */
1218 ioc_cap = 0;
1219 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1220 if (ioc->pfacts[ii].ProtocolFlags &
1221 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1222 ioc_cap ++;
1223 }
1224
1225 if (!ioc_cap) {
1226 printk(MYIOC_s_WARN_FMT
1227 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1228 ioc->name, ioc);
1229 return 0;
1230 }
1231
1232 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1233
1234 if (!sh) {
1235 printk(MYIOC_s_WARN_FMT
1236 "Unable to register controller with SCSI subsystem\n",
1237 ioc->name);
1238 error = -1;
1239 goto out_mptfc_probe;
1240 }
1241
1242 spin_lock_init(&ioc->fc_rescan_work_lock);
1243 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1244 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1245 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1246
1247 spin_lock_irqsave(&ioc->FreeQlock, flags);
1248
1249 /* Attach the SCSI Host to the IOC structure
1250 */
1251 ioc->sh = sh;
1252
1253 sh->io_port = 0;
1254 sh->n_io_port = 0;
1255 sh->irq = 0;
1256
1257 /* set 16 byte cdb's */
1258 sh->max_cmd_len = 16;
1259
1260 sh->max_id = ioc->pfacts->MaxDevices;
1261 sh->max_lun = max_lun;
1262
1263 /* Required entry.
1264 */
1265 sh->unique_id = ioc->id;
1266
1267 /* Verify that we won't exceed the maximum
1268 * number of chain buffers
1269 * We can optimize: ZZ = req_sz/sizeof(SGE)
1270 * For 32bit SGE's:
1271 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1272 * + (req_sz - 64)/sizeof(SGE)
1273 * A slightly different algorithm is required for
1274 * 64bit SGEs.
1275 */
1276 scale = ioc->req_sz/ioc->SGE_size;
1277 if (ioc->sg_addr_size == sizeof(u64)) {
1278 numSGE = (scale - 1) *
1279 (ioc->facts.MaxChainDepth-1) + scale +
1280 (ioc->req_sz - 60) / ioc->SGE_size;
1281 } else {
1282 numSGE = 1 + (scale - 1) *
1283 (ioc->facts.MaxChainDepth-1) + scale +
1284 (ioc->req_sz - 64) / ioc->SGE_size;
1285 }
1286
1287 if (numSGE < sh->sg_tablesize) {
1288 /* Reset this value */
1289 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1290 "Resetting sg_tablesize to %d from %d\n",
1291 ioc->name, numSGE, sh->sg_tablesize));
1292 sh->sg_tablesize = numSGE;
1293 }
1294
1295 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1296
1297 hd = shost_priv(sh);
1298 hd->ioc = ioc;
1299
1300 /* SCSI needs scsi_cmnd lookup table!
1301 * (with size equal to req_depth*PtrSz!)
1302 */
1303 ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1304 if (!ioc->ScsiLookup) {
1305 error = -ENOMEM;
1306 goto out_mptfc_probe;
1307 }
1308 spin_lock_init(&ioc->scsi_lookup_lock);
1309
1310 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1311 ioc->name, ioc->ScsiLookup));
1312
1313 hd->last_queue_full = 0;
1314
1315 sh->transportt = mptfc_transport_template;
1316 error = scsi_add_host (sh, &ioc->pcidev->dev);
1317 if(error) {
1318 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1319 "scsi_add_host failed\n", ioc->name));
1320 goto out_mptfc_probe;
1321 }
1322
1323 /* initialize workqueue */
1324
1325 snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
1326 "mptfc_wq_%d", sh->host_no);
1327 ioc->fc_rescan_work_q =
1328 alloc_ordered_workqueue(ioc->fc_rescan_work_q_name,
1329 WQ_MEM_RECLAIM);
1330 if (!ioc->fc_rescan_work_q) {
1331 error = -ENOMEM;
1332 goto out_mptfc_probe;
1333 }
1334
1335 /*
1336 * Pre-fetch FC port WWN and stuff...
1337 * (FCPortPage0_t stuff)
1338 */
1339 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1340 (void) mptfc_GetFcPortPage0(ioc, ii);
1341 }
1342 mptfc_SetFcPortPage1_defaults(ioc);
1343
1344 /*
1345 * scan for rports -
1346 * by doing it via the workqueue, some locking is eliminated
1347 */
1348
1349 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1350 flush_workqueue(ioc->fc_rescan_work_q);
1351
1352 return 0;
1353
1354 out_mptfc_probe:
1355
1356 mptscsih_remove(pdev);
1357 return error;
1358 }
1359
1360 static struct pci_driver mptfc_driver = {
1361 .name = "mptfc",
1362 .id_table = mptfc_pci_table,
1363 .probe = mptfc_probe,
1364 .remove = mptfc_remove,
1365 .shutdown = mptscsih_shutdown,
1366 #ifdef CONFIG_PM
1367 .suspend = mptscsih_suspend,
1368 .resume = mptscsih_resume,
1369 #endif
1370 };
1371
1372 static int
1373 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1374 {
1375 MPT_SCSI_HOST *hd;
1376 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1377 unsigned long flags;
1378 int rc=1;
1379
1380 if (ioc->bus_type != FC)
1381 return 0;
1382
1383 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1384 ioc->name, event));
1385
1386 if (ioc->sh == NULL ||
1387 ((hd = shost_priv(ioc->sh)) == NULL))
1388 return 1;
1389
1390 switch (event) {
1391 case MPI_EVENT_RESCAN:
1392 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1393 if (ioc->fc_rescan_work_q) {
1394 queue_work(ioc->fc_rescan_work_q,
1395 &ioc->fc_rescan_work);
1396 }
1397 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1398 break;
1399 case MPI_EVENT_LINK_STATUS_CHANGE:
1400 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1401 if (ioc->fc_rescan_work_q) {
1402 queue_work(ioc->fc_rescan_work_q,
1403 &ioc->fc_lsc_work);
1404 }
1405 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1406 break;
1407 default:
1408 rc = mptscsih_event_process(ioc,pEvReply);
1409 break;
1410 }
1411 return rc;
1412 }
1413
1414 static int
1415 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1416 {
1417 int rc;
1418 unsigned long flags;
1419
1420 rc = mptscsih_ioc_reset(ioc,reset_phase);
1421 if ((ioc->bus_type != FC) || (!rc))
1422 return rc;
1423
1424
1425 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1426 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1427 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1428 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1429
1430 if (reset_phase == MPT_IOC_SETUP_RESET) {
1431 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1432 if (ioc->fc_rescan_work_q) {
1433 queue_work(ioc->fc_rescan_work_q,
1434 &ioc->fc_setup_reset_work);
1435 }
1436 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1437 }
1438
1439 else if (reset_phase == MPT_IOC_PRE_RESET) {
1440 }
1441
1442 else { /* MPT_IOC_POST_RESET */
1443 mptfc_SetFcPortPage1_defaults(ioc);
1444 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1445 if (ioc->fc_rescan_work_q) {
1446 queue_work(ioc->fc_rescan_work_q,
1447 &ioc->fc_rescan_work);
1448 }
1449 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1450 }
1451 return 1;
1452 }
1453
1454 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1455 /**
1456 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1457 *
1458 * Returns 0 for success, non-zero for failure.
1459 */
1460 static int __init
1461 mptfc_init(void)
1462 {
1463 int error;
1464
1465 show_mptmod_ver(my_NAME, my_VERSION);
1466
1467 /* sanity check module parameters */
1468 if (mptfc_dev_loss_tmo <= 0)
1469 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1470
1471 mptfc_transport_template =
1472 fc_attach_transport(&mptfc_transport_functions);
1473
1474 if (!mptfc_transport_template)
1475 return -ENODEV;
1476
1477 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER,
1478 "mptscsih_scandv_complete");
1479 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER,
1480 "mptscsih_scandv_complete");
1481 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER,
1482 "mptscsih_scandv_complete");
1483
1484 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1485 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1486
1487 error = pci_register_driver(&mptfc_driver);
1488 if (error)
1489 fc_release_transport(mptfc_transport_template);
1490
1491 return error;
1492 }
1493
1494 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1495 /**
1496 * mptfc_remove - Remove fc infrastructure for devices
1497 * @pdev: Pointer to pci_dev structure
1498 *
1499 */
1500 static void mptfc_remove(struct pci_dev *pdev)
1501 {
1502 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1503 struct mptfc_rport_info *p, *n;
1504 struct workqueue_struct *work_q;
1505 unsigned long flags;
1506 int ii;
1507
1508 /* destroy workqueue */
1509 if ((work_q=ioc->fc_rescan_work_q)) {
1510 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1511 ioc->fc_rescan_work_q = NULL;
1512 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1513 destroy_workqueue(work_q);
1514 }
1515
1516 fc_remove_host(ioc->sh);
1517
1518 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1519 list_del(&p->list);
1520 kfree(p);
1521 }
1522
1523 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1524 if (ioc->fc_data.fc_port_page1[ii].data) {
1525 pci_free_consistent(ioc->pcidev,
1526 ioc->fc_data.fc_port_page1[ii].pg_sz,
1527 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1528 ioc->fc_data.fc_port_page1[ii].dma);
1529 ioc->fc_data.fc_port_page1[ii].data = NULL;
1530 }
1531 }
1532
1533 mptscsih_remove(pdev);
1534 }
1535
1536 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1537 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1538 /**
1539 * mptfc_exit - Unregisters MPT adapter(s)
1540 *
1541 */
1542 static void __exit
1543 mptfc_exit(void)
1544 {
1545 pci_unregister_driver(&mptfc_driver);
1546 fc_release_transport(mptfc_transport_template);
1547
1548 mpt_reset_deregister(mptfcDoneCtx);
1549 mpt_event_deregister(mptfcDoneCtx);
1550
1551 mpt_deregister(mptfcInternalCtx);
1552 mpt_deregister(mptfcTaskCtx);
1553 mpt_deregister(mptfcDoneCtx);
1554 }
1555
1556 module_init(mptfc_init);
1557 module_exit(mptfc_exit);
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