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Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into drm...
[deliverable/linux.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_abort_handler = mptfc_abort,
123 .eh_device_reset_handler = mptfc_dev_reset,
124 .eh_bus_reset_handler = mptfc_bus_reset,
125 .eh_host_reset_handler = mptfc_host_reset,
126 .bios_param = mptscsih_bios_param,
127 .can_queue = MPT_FC_CAN_QUEUE,
128 .this_id = -1,
129 .sg_tablesize = MPT_SCSI_SG_DEPTH,
130 .max_sectors = 8192,
131 .cmd_per_lun = 7,
132 .use_clustering = ENABLE_CLUSTERING,
133 .shost_attrs = mptscsih_host_attrs,
134 };
135
136 /****************************************************************************
137 * Supported hardware
138 */
139
140 static struct pci_device_id mptfc_pci_table[] = {
141 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
142 PCI_ANY_ID, PCI_ANY_ID },
143 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
144 PCI_ANY_ID, PCI_ANY_ID },
145 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
146 PCI_ANY_ID, PCI_ANY_ID },
147 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
148 PCI_ANY_ID, PCI_ANY_ID },
149 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
150 PCI_ANY_ID, PCI_ANY_ID },
151 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
152 PCI_ANY_ID, PCI_ANY_ID },
153 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
154 PCI_ANY_ID, PCI_ANY_ID },
155 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
156 PCI_ANY_ID, PCI_ANY_ID },
157 { PCI_VENDOR_ID_BROCADE, MPI_MANUFACTPAGE_DEVICEID_FC949E,
158 PCI_ANY_ID, PCI_ANY_ID },
159 {0} /* Terminating entry */
160 };
161 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
162
163 static struct scsi_transport_template *mptfc_transport_template = NULL;
164
165 static struct fc_function_template mptfc_transport_functions = {
166 .dd_fcrport_size = 8,
167 .show_host_node_name = 1,
168 .show_host_port_name = 1,
169 .show_host_supported_classes = 1,
170 .show_host_port_id = 1,
171 .show_rport_supported_classes = 1,
172 .show_starget_node_name = 1,
173 .show_starget_port_name = 1,
174 .show_starget_port_id = 1,
175 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
176 .show_rport_dev_loss_tmo = 1,
177 .show_host_supported_speeds = 1,
178 .show_host_maxframe_size = 1,
179 .show_host_speed = 1,
180 .show_host_fabric_name = 1,
181 .show_host_port_type = 1,
182 .show_host_port_state = 1,
183 .show_host_symbolic_name = 1,
184 };
185
186 static int
187 mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
188 int (*func)(struct scsi_cmnd *SCpnt),
189 const char *caller)
190 {
191 MPT_SCSI_HOST *hd;
192 struct scsi_device *sdev = SCpnt->device;
193 struct Scsi_Host *shost = sdev->host;
194 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
195 unsigned long flags;
196 int ready;
197 MPT_ADAPTER *ioc;
198 int loops = 40; /* seconds */
199
200 hd = shost_priv(SCpnt->device->host);
201 ioc = hd->ioc;
202 spin_lock_irqsave(shost->host_lock, flags);
203 while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY
204 || (loops > 0 && ioc->active == 0)) {
205 spin_unlock_irqrestore(shost->host_lock, flags);
206 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
207 "mptfc_block_error_handler.%d: %d:%llu, port status is "
208 "%x, active flag %d, deferring %s recovery.\n",
209 ioc->name, ioc->sh->host_no,
210 SCpnt->device->id, SCpnt->device->lun,
211 ready, ioc->active, caller));
212 msleep(1000);
213 spin_lock_irqsave(shost->host_lock, flags);
214 loops --;
215 }
216 spin_unlock_irqrestore(shost->host_lock, flags);
217
218 if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata
219 || ioc->active == 0) {
220 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
221 "%s.%d: %d:%llu, failing recovery, "
222 "port state %x, active %d, vdevice %p.\n", caller,
223 ioc->name, ioc->sh->host_no,
224 SCpnt->device->id, SCpnt->device->lun, ready,
225 ioc->active, SCpnt->device->hostdata));
226 return FAILED;
227 }
228 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
229 "%s.%d: %d:%llu, executing recovery.\n", caller,
230 ioc->name, ioc->sh->host_no,
231 SCpnt->device->id, SCpnt->device->lun));
232 return (*func)(SCpnt);
233 }
234
235 static int
236 mptfc_abort(struct scsi_cmnd *SCpnt)
237 {
238 return
239 mptfc_block_error_handler(SCpnt, mptscsih_abort, __func__);
240 }
241
242 static int
243 mptfc_dev_reset(struct scsi_cmnd *SCpnt)
244 {
245 return
246 mptfc_block_error_handler(SCpnt, mptscsih_dev_reset, __func__);
247 }
248
249 static int
250 mptfc_bus_reset(struct scsi_cmnd *SCpnt)
251 {
252 return
253 mptfc_block_error_handler(SCpnt, mptscsih_bus_reset, __func__);
254 }
255
256 static int
257 mptfc_host_reset(struct scsi_cmnd *SCpnt)
258 {
259 return
260 mptfc_block_error_handler(SCpnt, mptscsih_host_reset, __func__);
261 }
262
263 static void
264 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
265 {
266 if (timeout > 0)
267 rport->dev_loss_tmo = timeout;
268 else
269 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
270 }
271
272 static int
273 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
274 {
275 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
276 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
277
278 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
279 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
280 return 0;
281 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
282 return -1;
283 return 1;
284 }
285 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
286 return -1;
287 return 1;
288 }
289
290 static int
291 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
292 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
293 {
294 ConfigPageHeader_t hdr;
295 CONFIGPARMS cfg;
296 FCDevicePage0_t *ppage0_alloc, *fc;
297 dma_addr_t page0_dma;
298 int data_sz;
299 int ii;
300
301 FCDevicePage0_t *p0_array=NULL, *p_p0;
302 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
303
304 int rc = -ENOMEM;
305 U32 port_id = 0xffffff;
306 int num_targ = 0;
307 int max_bus = ioc->facts.MaxBuses;
308 int max_targ;
309
310 max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;
311
312 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
313 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
314 if (!p0_array)
315 goto out;
316
317 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
318 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
319 if (!pp0_array)
320 goto out;
321
322 do {
323 /* Get FC Device Page 0 header */
324 hdr.PageVersion = 0;
325 hdr.PageLength = 0;
326 hdr.PageNumber = 0;
327 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
328 cfg.cfghdr.hdr = &hdr;
329 cfg.physAddr = -1;
330 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
331 cfg.dir = 0;
332 cfg.pageAddr = port_id;
333 cfg.timeout = 0;
334
335 if ((rc = mpt_config(ioc, &cfg)) != 0)
336 break;
337
338 if (hdr.PageLength <= 0)
339 break;
340
341 data_sz = hdr.PageLength * 4;
342 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
343 &page0_dma);
344 rc = -ENOMEM;
345 if (!ppage0_alloc)
346 break;
347
348 cfg.physAddr = page0_dma;
349 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
350
351 if ((rc = mpt_config(ioc, &cfg)) == 0) {
352 ppage0_alloc->PortIdentifier =
353 le32_to_cpu(ppage0_alloc->PortIdentifier);
354
355 ppage0_alloc->WWNN.Low =
356 le32_to_cpu(ppage0_alloc->WWNN.Low);
357
358 ppage0_alloc->WWNN.High =
359 le32_to_cpu(ppage0_alloc->WWNN.High);
360
361 ppage0_alloc->WWPN.Low =
362 le32_to_cpu(ppage0_alloc->WWPN.Low);
363
364 ppage0_alloc->WWPN.High =
365 le32_to_cpu(ppage0_alloc->WWPN.High);
366
367 ppage0_alloc->BBCredit =
368 le16_to_cpu(ppage0_alloc->BBCredit);
369
370 ppage0_alloc->MaxRxFrameSize =
371 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
372
373 port_id = ppage0_alloc->PortIdentifier;
374 num_targ++;
375 *p_p0 = *ppage0_alloc; /* save data */
376 *p_pp0++ = p_p0++; /* save addr */
377 }
378 pci_free_consistent(ioc->pcidev, data_sz,
379 (u8 *) ppage0_alloc, page0_dma);
380 if (rc != 0)
381 break;
382
383 } while (port_id <= 0xff0000);
384
385 if (num_targ) {
386 /* sort array */
387 if (num_targ > 1)
388 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
389 mptfc_FcDevPage0_cmp_func, NULL);
390 /* call caller's func for each targ */
391 for (ii = 0; ii < num_targ; ii++) {
392 fc = *(pp0_array+ii);
393 func(ioc, ioc_port, fc);
394 }
395 }
396
397 out:
398 kfree(pp0_array);
399 kfree(p0_array);
400 return rc;
401 }
402
403 static int
404 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
405 {
406 /* not currently usable */
407 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
408 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
409 return -1;
410
411 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
412 return -1;
413
414 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
415 return -1;
416
417 /*
418 * board data structure already normalized to platform endianness
419 * shifted to avoid unaligned access on 64 bit architecture
420 */
421 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
422 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
423 rid->port_id = pg0->PortIdentifier;
424 rid->roles = FC_RPORT_ROLE_UNKNOWN;
425
426 return 0;
427 }
428
429 static void
430 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
431 {
432 struct fc_rport_identifiers rport_ids;
433 struct fc_rport *rport;
434 struct mptfc_rport_info *ri;
435 int new_ri = 1;
436 u64 pn, nn;
437 VirtTarget *vtarget;
438 u32 roles = FC_RPORT_ROLE_UNKNOWN;
439
440 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
441 return;
442
443 roles |= FC_RPORT_ROLE_FCP_TARGET;
444 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
445 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
446
447 /* scan list looking for a match */
448 list_for_each_entry(ri, &ioc->fc_rports, list) {
449 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
450 if (pn == rport_ids.port_name) { /* match */
451 list_move_tail(&ri->list, &ioc->fc_rports);
452 new_ri = 0;
453 break;
454 }
455 }
456 if (new_ri) { /* allocate one */
457 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
458 if (!ri)
459 return;
460 list_add_tail(&ri->list, &ioc->fc_rports);
461 }
462
463 ri->pg0 = *pg0; /* add/update pg0 data */
464 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
465
466 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
467 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
468 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
469 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
470 if (rport) {
471 ri->rport = rport;
472 if (new_ri) /* may have been reset by user */
473 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
474 /*
475 * if already mapped, remap here. If not mapped,
476 * target_alloc will allocate vtarget and map,
477 * slave_alloc will fill in vdevice from vtarget.
478 */
479 if (ri->starget) {
480 vtarget = ri->starget->hostdata;
481 if (vtarget) {
482 vtarget->id = pg0->CurrentTargetID;
483 vtarget->channel = pg0->CurrentBus;
484 vtarget->deleted = 0;
485 }
486 }
487 *((struct mptfc_rport_info **)rport->dd_data) = ri;
488 /* scan will be scheduled once rport becomes a target */
489 fc_remote_port_rolechg(rport,roles);
490
491 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
492 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
493 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
494 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
495 "rport tid %d, tmo %d\n",
496 ioc->name,
497 ioc->sh->host_no,
498 pg0->PortIdentifier,
499 (unsigned long long)nn,
500 (unsigned long long)pn,
501 pg0->CurrentTargetID,
502 ri->rport->scsi_target_id,
503 ri->rport->dev_loss_tmo));
504 } else {
505 list_del(&ri->list);
506 kfree(ri);
507 ri = NULL;
508 }
509 }
510 }
511
512 /*
513 * OS entry point to allow for host driver to free allocated memory
514 * Called if no device present or device being unloaded
515 */
516 static void
517 mptfc_target_destroy(struct scsi_target *starget)
518 {
519 struct fc_rport *rport;
520 struct mptfc_rport_info *ri;
521
522 rport = starget_to_rport(starget);
523 if (rport) {
524 ri = *((struct mptfc_rport_info **)rport->dd_data);
525 if (ri) /* better be! */
526 ri->starget = NULL;
527 }
528 kfree(starget->hostdata);
529 starget->hostdata = NULL;
530 }
531
532 /*
533 * OS entry point to allow host driver to alloc memory
534 * for each scsi target. Called once per device the bus scan.
535 * Return non-zero if allocation fails.
536 */
537 static int
538 mptfc_target_alloc(struct scsi_target *starget)
539 {
540 VirtTarget *vtarget;
541 struct fc_rport *rport;
542 struct mptfc_rport_info *ri;
543 int rc;
544
545 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
546 if (!vtarget)
547 return -ENOMEM;
548 starget->hostdata = vtarget;
549
550 rc = -ENODEV;
551 rport = starget_to_rport(starget);
552 if (rport) {
553 ri = *((struct mptfc_rport_info **)rport->dd_data);
554 if (ri) { /* better be! */
555 vtarget->id = ri->pg0.CurrentTargetID;
556 vtarget->channel = ri->pg0.CurrentBus;
557 ri->starget = starget;
558 rc = 0;
559 }
560 }
561 if (rc != 0) {
562 kfree(vtarget);
563 starget->hostdata = NULL;
564 }
565
566 return rc;
567 }
568 /*
569 * mptfc_dump_lun_info
570 * @ioc
571 * @rport
572 * @sdev
573 *
574 */
575 static void
576 mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
577 VirtTarget *vtarget)
578 {
579 u64 nn, pn;
580 struct mptfc_rport_info *ri;
581
582 ri = *((struct mptfc_rport_info **)rport->dd_data);
583 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
584 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
585 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
586 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
587 "CurrentTargetID %d, %x %llx %llx\n",
588 ioc->name,
589 sdev->host->host_no,
590 vtarget->num_luns,
591 sdev->id, ri->pg0.CurrentTargetID,
592 ri->pg0.PortIdentifier,
593 (unsigned long long)pn,
594 (unsigned long long)nn));
595 }
596
597
598 /*
599 * OS entry point to allow host driver to alloc memory
600 * for each scsi device. Called once per device the bus scan.
601 * Return non-zero if allocation fails.
602 * Init memory once per LUN.
603 */
604 static int
605 mptfc_slave_alloc(struct scsi_device *sdev)
606 {
607 MPT_SCSI_HOST *hd;
608 VirtTarget *vtarget;
609 VirtDevice *vdevice;
610 struct scsi_target *starget;
611 struct fc_rport *rport;
612 MPT_ADAPTER *ioc;
613
614 starget = scsi_target(sdev);
615 rport = starget_to_rport(starget);
616
617 if (!rport || fc_remote_port_chkready(rport))
618 return -ENXIO;
619
620 hd = shost_priv(sdev->host);
621 ioc = hd->ioc;
622
623 vdevice = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
624 if (!vdevice) {
625 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
626 ioc->name, sizeof(VirtDevice));
627 return -ENOMEM;
628 }
629
630
631 sdev->hostdata = vdevice;
632 vtarget = starget->hostdata;
633
634 if (vtarget->num_luns == 0) {
635 vtarget->ioc_id = ioc->id;
636 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
637 }
638
639 vdevice->vtarget = vtarget;
640 vdevice->lun = sdev->lun;
641
642 vtarget->num_luns++;
643
644
645 mptfc_dump_lun_info(ioc, rport, sdev, vtarget);
646
647 return 0;
648 }
649
650 static int
651 mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
652 {
653 struct mptfc_rport_info *ri;
654 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
655 int err;
656 VirtDevice *vdevice = SCpnt->device->hostdata;
657
658 if (!vdevice || !vdevice->vtarget) {
659 SCpnt->result = DID_NO_CONNECT << 16;
660 SCpnt->scsi_done(SCpnt);
661 return 0;
662 }
663
664 err = fc_remote_port_chkready(rport);
665 if (unlikely(err)) {
666 SCpnt->result = err;
667 SCpnt->scsi_done(SCpnt);
668 return 0;
669 }
670
671 /* dd_data is null until finished adding target */
672 ri = *((struct mptfc_rport_info **)rport->dd_data);
673 if (unlikely(!ri)) {
674 SCpnt->result = DID_IMM_RETRY << 16;
675 SCpnt->scsi_done(SCpnt);
676 return 0;
677 }
678
679 return mptscsih_qcmd(SCpnt);
680 }
681
682 /*
683 * mptfc_display_port_link_speed - displaying link speed
684 * @ioc: Pointer to MPT_ADAPTER structure
685 * @portnum: IOC Port number
686 * @pp0dest: port page0 data payload
687 *
688 */
689 static void
690 mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
691 {
692 u8 old_speed, new_speed, state;
693 char *old, *new;
694
695 if (portnum >= 2)
696 return;
697
698 old_speed = ioc->fc_link_speed[portnum];
699 new_speed = pp0dest->CurrentSpeed;
700 state = pp0dest->PortState;
701
702 if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
703 new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UKNOWN) {
704
705 old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
706 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
707 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
708 "Unknown";
709 new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
710 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
711 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
712 "Unknown";
713 if (old_speed == 0)
714 printk(MYIOC_s_NOTE_FMT
715 "FC Link Established, Speed = %s\n",
716 ioc->name, new);
717 else if (old_speed != new_speed)
718 printk(MYIOC_s_WARN_FMT
719 "FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
720 ioc->name, old, new);
721
722 ioc->fc_link_speed[portnum] = new_speed;
723 }
724 }
725
726 /*
727 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
728 * @ioc: Pointer to MPT_ADAPTER structure
729 * @portnum: IOC Port number
730 *
731 * Return: 0 for success
732 * -ENOMEM if no memory available
733 * -EPERM if not allowed due to ISR context
734 * -EAGAIN if no msg frames currently available
735 * -EFAULT for non-successful reply or no reply (timeout)
736 * -EINVAL portnum arg out of range (hardwired to two elements)
737 */
738 static int
739 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
740 {
741 ConfigPageHeader_t hdr;
742 CONFIGPARMS cfg;
743 FCPortPage0_t *ppage0_alloc;
744 FCPortPage0_t *pp0dest;
745 dma_addr_t page0_dma;
746 int data_sz;
747 int copy_sz;
748 int rc;
749 int count = 400;
750
751 if (portnum > 1)
752 return -EINVAL;
753
754 /* Get FCPort Page 0 header */
755 hdr.PageVersion = 0;
756 hdr.PageLength = 0;
757 hdr.PageNumber = 0;
758 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
759 cfg.cfghdr.hdr = &hdr;
760 cfg.physAddr = -1;
761 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
762 cfg.dir = 0;
763 cfg.pageAddr = portnum;
764 cfg.timeout = 0;
765
766 if ((rc = mpt_config(ioc, &cfg)) != 0)
767 return rc;
768
769 if (hdr.PageLength == 0)
770 return 0;
771
772 data_sz = hdr.PageLength * 4;
773 rc = -ENOMEM;
774 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
775 if (ppage0_alloc) {
776
777 try_again:
778 memset((u8 *)ppage0_alloc, 0, data_sz);
779 cfg.physAddr = page0_dma;
780 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
781
782 if ((rc = mpt_config(ioc, &cfg)) == 0) {
783 /* save the data */
784 pp0dest = &ioc->fc_port_page0[portnum];
785 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
786 memcpy(pp0dest, ppage0_alloc, copy_sz);
787
788 /*
789 * Normalize endianness of structure data,
790 * by byte-swapping all > 1 byte fields!
791 */
792 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
793 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
794 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
795 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
796 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
797 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
798 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
799 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
800 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
801 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
802 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
803 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
804 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
805 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
806 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
807 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
808
809 /*
810 * if still doing discovery,
811 * hang loose a while until finished
812 */
813 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
814 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
815 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
816 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
817 if (count-- > 0) {
818 msleep(100);
819 goto try_again;
820 }
821 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
822 " complete.\n",
823 ioc->name);
824 }
825 mptfc_display_port_link_speed(ioc, portnum, pp0dest);
826 }
827
828 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
829 }
830
831 return rc;
832 }
833
834 static int
835 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
836 {
837 ConfigPageHeader_t hdr;
838 CONFIGPARMS cfg;
839 int rc;
840
841 if (portnum > 1)
842 return -EINVAL;
843
844 if (!(ioc->fc_data.fc_port_page1[portnum].data))
845 return -EINVAL;
846
847 /* get fcport page 1 header */
848 hdr.PageVersion = 0;
849 hdr.PageLength = 0;
850 hdr.PageNumber = 1;
851 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
852 cfg.cfghdr.hdr = &hdr;
853 cfg.physAddr = -1;
854 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
855 cfg.dir = 0;
856 cfg.pageAddr = portnum;
857 cfg.timeout = 0;
858
859 if ((rc = mpt_config(ioc, &cfg)) != 0)
860 return rc;
861
862 if (hdr.PageLength == 0)
863 return -ENODEV;
864
865 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
866 return -EINVAL;
867
868 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
869 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
870 cfg.dir = 1;
871
872 rc = mpt_config(ioc, &cfg);
873
874 return rc;
875 }
876
877 static int
878 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
879 {
880 ConfigPageHeader_t hdr;
881 CONFIGPARMS cfg;
882 FCPortPage1_t *page1_alloc;
883 dma_addr_t page1_dma;
884 int data_sz;
885 int rc;
886
887 if (portnum > 1)
888 return -EINVAL;
889
890 /* get fcport page 1 header */
891 hdr.PageVersion = 0;
892 hdr.PageLength = 0;
893 hdr.PageNumber = 1;
894 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
895 cfg.cfghdr.hdr = &hdr;
896 cfg.physAddr = -1;
897 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
898 cfg.dir = 0;
899 cfg.pageAddr = portnum;
900 cfg.timeout = 0;
901
902 if ((rc = mpt_config(ioc, &cfg)) != 0)
903 return rc;
904
905 if (hdr.PageLength == 0)
906 return -ENODEV;
907
908 start_over:
909
910 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
911 data_sz = hdr.PageLength * 4;
912 if (data_sz < sizeof(FCPortPage1_t))
913 data_sz = sizeof(FCPortPage1_t);
914
915 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
916 data_sz,
917 &page1_dma);
918 if (!page1_alloc)
919 return -ENOMEM;
920 }
921 else {
922 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
923 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
924 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
925 if (hdr.PageLength * 4 > data_sz) {
926 ioc->fc_data.fc_port_page1[portnum].data = NULL;
927 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
928 page1_alloc, page1_dma);
929 goto start_over;
930 }
931 }
932
933 memset(page1_alloc,0,data_sz);
934
935 cfg.physAddr = page1_dma;
936 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
937
938 if ((rc = mpt_config(ioc, &cfg)) == 0) {
939 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
940 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
941 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
942 }
943 else {
944 ioc->fc_data.fc_port_page1[portnum].data = NULL;
945 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
946 page1_alloc, page1_dma);
947 }
948
949 return rc;
950 }
951
952 static void
953 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
954 {
955 int ii;
956 FCPortPage1_t *pp1;
957
958 #define MPTFC_FW_DEVICE_TIMEOUT (1)
959 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
960 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
961 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
962
963 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
964 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
965 continue;
966 pp1 = ioc->fc_data.fc_port_page1[ii].data;
967 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
968 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
969 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
970 && ((pp1->Flags & OFF_FLAGS) == 0))
971 continue;
972 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
973 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
974 pp1->Flags &= ~OFF_FLAGS;
975 pp1->Flags |= ON_FLAGS;
976 mptfc_WriteFcPortPage1(ioc, ii);
977 }
978 }
979
980
981 static void
982 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
983 {
984 unsigned class = 0;
985 unsigned cos = 0;
986 unsigned speed;
987 unsigned port_type;
988 unsigned port_state;
989 FCPortPage0_t *pp0;
990 struct Scsi_Host *sh;
991 char *sn;
992
993 /* don't know what to do as only one scsi (fc) host was allocated */
994 if (portnum != 0)
995 return;
996
997 pp0 = &ioc->fc_port_page0[portnum];
998 sh = ioc->sh;
999
1000 sn = fc_host_symbolic_name(sh);
1001 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
1002 ioc->prod_name,
1003 MPT_FW_REV_MAGIC_ID_STRING,
1004 ioc->facts.FWVersion.Word);
1005
1006 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
1007
1008 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
1009
1010 fc_host_node_name(sh) =
1011 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1012
1013 fc_host_port_name(sh) =
1014 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1015
1016 fc_host_port_id(sh) = pp0->PortIdentifier;
1017
1018 class = pp0->SupportedServiceClass;
1019 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1020 cos |= FC_COS_CLASS1;
1021 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1022 cos |= FC_COS_CLASS2;
1023 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1024 cos |= FC_COS_CLASS3;
1025 fc_host_supported_classes(sh) = cos;
1026
1027 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1028 speed = FC_PORTSPEED_1GBIT;
1029 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1030 speed = FC_PORTSPEED_2GBIT;
1031 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1032 speed = FC_PORTSPEED_4GBIT;
1033 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1034 speed = FC_PORTSPEED_10GBIT;
1035 else
1036 speed = FC_PORTSPEED_UNKNOWN;
1037 fc_host_speed(sh) = speed;
1038
1039 speed = 0;
1040 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1041 speed |= FC_PORTSPEED_1GBIT;
1042 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1043 speed |= FC_PORTSPEED_2GBIT;
1044 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1045 speed |= FC_PORTSPEED_4GBIT;
1046 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1047 speed |= FC_PORTSPEED_10GBIT;
1048 fc_host_supported_speeds(sh) = speed;
1049
1050 port_state = FC_PORTSTATE_UNKNOWN;
1051 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1052 port_state = FC_PORTSTATE_ONLINE;
1053 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1054 port_state = FC_PORTSTATE_LINKDOWN;
1055 fc_host_port_state(sh) = port_state;
1056
1057 port_type = FC_PORTTYPE_UNKNOWN;
1058 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1059 port_type = FC_PORTTYPE_PTP;
1060 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1061 port_type = FC_PORTTYPE_LPORT;
1062 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1063 port_type = FC_PORTTYPE_NLPORT;
1064 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1065 port_type = FC_PORTTYPE_NPORT;
1066 fc_host_port_type(sh) = port_type;
1067
1068 fc_host_fabric_name(sh) =
1069 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1070 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1071 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1072
1073 }
1074
1075 static void
1076 mptfc_link_status_change(struct work_struct *work)
1077 {
1078 MPT_ADAPTER *ioc =
1079 container_of(work, MPT_ADAPTER, fc_rescan_work);
1080 int ii;
1081
1082 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1083 (void) mptfc_GetFcPortPage0(ioc, ii);
1084
1085 }
1086
1087 static void
1088 mptfc_setup_reset(struct work_struct *work)
1089 {
1090 MPT_ADAPTER *ioc =
1091 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1092 u64 pn;
1093 struct mptfc_rport_info *ri;
1094 struct scsi_target *starget;
1095 VirtTarget *vtarget;
1096
1097 /* reset about to happen, delete (block) all rports */
1098 list_for_each_entry(ri, &ioc->fc_rports, list) {
1099 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1100 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1101 fc_remote_port_delete(ri->rport); /* won't sleep */
1102 ri->rport = NULL;
1103 starget = ri->starget;
1104 if (starget) {
1105 vtarget = starget->hostdata;
1106 if (vtarget)
1107 vtarget->deleted = 1;
1108 }
1109
1110 pn = (u64)ri->pg0.WWPN.High << 32 |
1111 (u64)ri->pg0.WWPN.Low;
1112 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1113 "mptfc_setup_reset.%d: %llx deleted\n",
1114 ioc->name,
1115 ioc->sh->host_no,
1116 (unsigned long long)pn));
1117 }
1118 }
1119 }
1120
1121 static void
1122 mptfc_rescan_devices(struct work_struct *work)
1123 {
1124 MPT_ADAPTER *ioc =
1125 container_of(work, MPT_ADAPTER, fc_rescan_work);
1126 int ii;
1127 u64 pn;
1128 struct mptfc_rport_info *ri;
1129 struct scsi_target *starget;
1130 VirtTarget *vtarget;
1131
1132 /* start by tagging all ports as missing */
1133 list_for_each_entry(ri, &ioc->fc_rports, list) {
1134 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1135 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1136 }
1137 }
1138
1139 /*
1140 * now rescan devices known to adapter,
1141 * will reregister existing rports
1142 */
1143 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1144 (void) mptfc_GetFcPortPage0(ioc, ii);
1145 mptfc_init_host_attr(ioc, ii); /* refresh */
1146 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1147 }
1148
1149 /* delete devices still missing */
1150 list_for_each_entry(ri, &ioc->fc_rports, list) {
1151 /* if newly missing, delete it */
1152 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1153
1154 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1155 MPT_RPORT_INFO_FLAGS_MISSING);
1156 fc_remote_port_delete(ri->rport); /* won't sleep */
1157 ri->rport = NULL;
1158 starget = ri->starget;
1159 if (starget) {
1160 vtarget = starget->hostdata;
1161 if (vtarget)
1162 vtarget->deleted = 1;
1163 }
1164
1165 pn = (u64)ri->pg0.WWPN.High << 32 |
1166 (u64)ri->pg0.WWPN.Low;
1167 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1168 "mptfc_rescan.%d: %llx deleted\n",
1169 ioc->name,
1170 ioc->sh->host_no,
1171 (unsigned long long)pn));
1172 }
1173 }
1174 }
1175
1176 static int
1177 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1178 {
1179 struct Scsi_Host *sh;
1180 MPT_SCSI_HOST *hd;
1181 MPT_ADAPTER *ioc;
1182 unsigned long flags;
1183 int ii;
1184 int numSGE = 0;
1185 int scale;
1186 int ioc_cap;
1187 int error=0;
1188 int r;
1189
1190 if ((r = mpt_attach(pdev,id)) != 0)
1191 return r;
1192
1193 ioc = pci_get_drvdata(pdev);
1194 ioc->DoneCtx = mptfcDoneCtx;
1195 ioc->TaskCtx = mptfcTaskCtx;
1196 ioc->InternalCtx = mptfcInternalCtx;
1197
1198 /* Added sanity check on readiness of the MPT adapter.
1199 */
1200 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1201 printk(MYIOC_s_WARN_FMT
1202 "Skipping because it's not operational!\n",
1203 ioc->name);
1204 error = -ENODEV;
1205 goto out_mptfc_probe;
1206 }
1207
1208 if (!ioc->active) {
1209 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1210 ioc->name);
1211 error = -ENODEV;
1212 goto out_mptfc_probe;
1213 }
1214
1215 /* Sanity check - ensure at least 1 port is INITIATOR capable
1216 */
1217 ioc_cap = 0;
1218 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1219 if (ioc->pfacts[ii].ProtocolFlags &
1220 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1221 ioc_cap ++;
1222 }
1223
1224 if (!ioc_cap) {
1225 printk(MYIOC_s_WARN_FMT
1226 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1227 ioc->name, ioc);
1228 return 0;
1229 }
1230
1231 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1232
1233 if (!sh) {
1234 printk(MYIOC_s_WARN_FMT
1235 "Unable to register controller with SCSI subsystem\n",
1236 ioc->name);
1237 error = -1;
1238 goto out_mptfc_probe;
1239 }
1240
1241 spin_lock_init(&ioc->fc_rescan_work_lock);
1242 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1243 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1244 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1245
1246 spin_lock_irqsave(&ioc->FreeQlock, flags);
1247
1248 /* Attach the SCSI Host to the IOC structure
1249 */
1250 ioc->sh = sh;
1251
1252 sh->io_port = 0;
1253 sh->n_io_port = 0;
1254 sh->irq = 0;
1255
1256 /* set 16 byte cdb's */
1257 sh->max_cmd_len = 16;
1258
1259 sh->max_id = ioc->pfacts->MaxDevices;
1260 sh->max_lun = max_lun;
1261
1262 /* Required entry.
1263 */
1264 sh->unique_id = ioc->id;
1265
1266 /* Verify that we won't exceed the maximum
1267 * number of chain buffers
1268 * We can optimize: ZZ = req_sz/sizeof(SGE)
1269 * For 32bit SGE's:
1270 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1271 * + (req_sz - 64)/sizeof(SGE)
1272 * A slightly different algorithm is required for
1273 * 64bit SGEs.
1274 */
1275 scale = ioc->req_sz/ioc->SGE_size;
1276 if (ioc->sg_addr_size == sizeof(u64)) {
1277 numSGE = (scale - 1) *
1278 (ioc->facts.MaxChainDepth-1) + scale +
1279 (ioc->req_sz - 60) / ioc->SGE_size;
1280 } else {
1281 numSGE = 1 + (scale - 1) *
1282 (ioc->facts.MaxChainDepth-1) + scale +
1283 (ioc->req_sz - 64) / ioc->SGE_size;
1284 }
1285
1286 if (numSGE < sh->sg_tablesize) {
1287 /* Reset this value */
1288 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1289 "Resetting sg_tablesize to %d from %d\n",
1290 ioc->name, numSGE, sh->sg_tablesize));
1291 sh->sg_tablesize = numSGE;
1292 }
1293
1294 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1295
1296 hd = shost_priv(sh);
1297 hd->ioc = ioc;
1298
1299 /* SCSI needs scsi_cmnd lookup table!
1300 * (with size equal to req_depth*PtrSz!)
1301 */
1302 ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1303 if (!ioc->ScsiLookup) {
1304 error = -ENOMEM;
1305 goto out_mptfc_probe;
1306 }
1307 spin_lock_init(&ioc->scsi_lookup_lock);
1308
1309 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1310 ioc->name, ioc->ScsiLookup));
1311
1312 hd->last_queue_full = 0;
1313
1314 sh->transportt = mptfc_transport_template;
1315 error = scsi_add_host (sh, &ioc->pcidev->dev);
1316 if(error) {
1317 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1318 "scsi_add_host failed\n", ioc->name));
1319 goto out_mptfc_probe;
1320 }
1321
1322 /* initialize workqueue */
1323
1324 snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
1325 "mptfc_wq_%d", sh->host_no);
1326 ioc->fc_rescan_work_q =
1327 create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
1328 if (!ioc->fc_rescan_work_q)
1329 goto out_mptfc_probe;
1330
1331 /*
1332 * Pre-fetch FC port WWN and stuff...
1333 * (FCPortPage0_t stuff)
1334 */
1335 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1336 (void) mptfc_GetFcPortPage0(ioc, ii);
1337 }
1338 mptfc_SetFcPortPage1_defaults(ioc);
1339
1340 /*
1341 * scan for rports -
1342 * by doing it via the workqueue, some locking is eliminated
1343 */
1344
1345 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1346 flush_workqueue(ioc->fc_rescan_work_q);
1347
1348 return 0;
1349
1350 out_mptfc_probe:
1351
1352 mptscsih_remove(pdev);
1353 return error;
1354 }
1355
1356 static struct pci_driver mptfc_driver = {
1357 .name = "mptfc",
1358 .id_table = mptfc_pci_table,
1359 .probe = mptfc_probe,
1360 .remove = mptfc_remove,
1361 .shutdown = mptscsih_shutdown,
1362 #ifdef CONFIG_PM
1363 .suspend = mptscsih_suspend,
1364 .resume = mptscsih_resume,
1365 #endif
1366 };
1367
1368 static int
1369 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1370 {
1371 MPT_SCSI_HOST *hd;
1372 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1373 unsigned long flags;
1374 int rc=1;
1375
1376 if (ioc->bus_type != FC)
1377 return 0;
1378
1379 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1380 ioc->name, event));
1381
1382 if (ioc->sh == NULL ||
1383 ((hd = shost_priv(ioc->sh)) == NULL))
1384 return 1;
1385
1386 switch (event) {
1387 case MPI_EVENT_RESCAN:
1388 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1389 if (ioc->fc_rescan_work_q) {
1390 queue_work(ioc->fc_rescan_work_q,
1391 &ioc->fc_rescan_work);
1392 }
1393 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1394 break;
1395 case MPI_EVENT_LINK_STATUS_CHANGE:
1396 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1397 if (ioc->fc_rescan_work_q) {
1398 queue_work(ioc->fc_rescan_work_q,
1399 &ioc->fc_lsc_work);
1400 }
1401 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1402 break;
1403 default:
1404 rc = mptscsih_event_process(ioc,pEvReply);
1405 break;
1406 }
1407 return rc;
1408 }
1409
1410 static int
1411 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1412 {
1413 int rc;
1414 unsigned long flags;
1415
1416 rc = mptscsih_ioc_reset(ioc,reset_phase);
1417 if ((ioc->bus_type != FC) || (!rc))
1418 return rc;
1419
1420
1421 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1422 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1423 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1424 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1425
1426 if (reset_phase == MPT_IOC_SETUP_RESET) {
1427 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1428 if (ioc->fc_rescan_work_q) {
1429 queue_work(ioc->fc_rescan_work_q,
1430 &ioc->fc_setup_reset_work);
1431 }
1432 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1433 }
1434
1435 else if (reset_phase == MPT_IOC_PRE_RESET) {
1436 }
1437
1438 else { /* MPT_IOC_POST_RESET */
1439 mptfc_SetFcPortPage1_defaults(ioc);
1440 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1441 if (ioc->fc_rescan_work_q) {
1442 queue_work(ioc->fc_rescan_work_q,
1443 &ioc->fc_rescan_work);
1444 }
1445 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1446 }
1447 return 1;
1448 }
1449
1450 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1451 /**
1452 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1453 *
1454 * Returns 0 for success, non-zero for failure.
1455 */
1456 static int __init
1457 mptfc_init(void)
1458 {
1459 int error;
1460
1461 show_mptmod_ver(my_NAME, my_VERSION);
1462
1463 /* sanity check module parameters */
1464 if (mptfc_dev_loss_tmo <= 0)
1465 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1466
1467 mptfc_transport_template =
1468 fc_attach_transport(&mptfc_transport_functions);
1469
1470 if (!mptfc_transport_template)
1471 return -ENODEV;
1472
1473 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER,
1474 "mptscsih_scandv_complete");
1475 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER,
1476 "mptscsih_scandv_complete");
1477 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER,
1478 "mptscsih_scandv_complete");
1479
1480 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1481 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1482
1483 error = pci_register_driver(&mptfc_driver);
1484 if (error)
1485 fc_release_transport(mptfc_transport_template);
1486
1487 return error;
1488 }
1489
1490 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1491 /**
1492 * mptfc_remove - Remove fc infrastructure for devices
1493 * @pdev: Pointer to pci_dev structure
1494 *
1495 */
1496 static void mptfc_remove(struct pci_dev *pdev)
1497 {
1498 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1499 struct mptfc_rport_info *p, *n;
1500 struct workqueue_struct *work_q;
1501 unsigned long flags;
1502 int ii;
1503
1504 /* destroy workqueue */
1505 if ((work_q=ioc->fc_rescan_work_q)) {
1506 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1507 ioc->fc_rescan_work_q = NULL;
1508 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1509 destroy_workqueue(work_q);
1510 }
1511
1512 fc_remove_host(ioc->sh);
1513
1514 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1515 list_del(&p->list);
1516 kfree(p);
1517 }
1518
1519 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1520 if (ioc->fc_data.fc_port_page1[ii].data) {
1521 pci_free_consistent(ioc->pcidev,
1522 ioc->fc_data.fc_port_page1[ii].pg_sz,
1523 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1524 ioc->fc_data.fc_port_page1[ii].dma);
1525 ioc->fc_data.fc_port_page1[ii].data = NULL;
1526 }
1527 }
1528
1529 mptscsih_remove(pdev);
1530 }
1531
1532 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1533 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1534 /**
1535 * mptfc_exit - Unregisters MPT adapter(s)
1536 *
1537 */
1538 static void __exit
1539 mptfc_exit(void)
1540 {
1541 pci_unregister_driver(&mptfc_driver);
1542 fc_release_transport(mptfc_transport_template);
1543
1544 mpt_reset_deregister(mptfcDoneCtx);
1545 mpt_event_deregister(mptfcDoneCtx);
1546
1547 mpt_deregister(mptfcInternalCtx);
1548 mpt_deregister(mptfcTaskCtx);
1549 mpt_deregister(mptfcDoneCtx);
1550 }
1551
1552 module_init(mptfc_init);
1553 module_exit(mptfc_exit);
Linux kernel - Deliverables
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