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[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 if (starget->hostdata)
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 create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
1329 if (!ioc->fc_rescan_work_q)
1330 goto out_mptfc_probe;
1331
1332 /*
1333 * Pre-fetch FC port WWN and stuff...
1334 * (FCPortPage0_t stuff)
1335 */
1336 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1337 (void) mptfc_GetFcPortPage0(ioc, ii);
1338 }
1339 mptfc_SetFcPortPage1_defaults(ioc);
1340
1341 /*
1342 * scan for rports -
1343 * by doing it via the workqueue, some locking is eliminated
1344 */
1345
1346 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1347 flush_workqueue(ioc->fc_rescan_work_q);
1348
1349 return 0;
1350
1351 out_mptfc_probe:
1352
1353 mptscsih_remove(pdev);
1354 return error;
1355 }
1356
1357 static struct pci_driver mptfc_driver = {
1358 .name = "mptfc",
1359 .id_table = mptfc_pci_table,
1360 .probe = mptfc_probe,
1361 .remove = mptfc_remove,
1362 .shutdown = mptscsih_shutdown,
1363 #ifdef CONFIG_PM
1364 .suspend = mptscsih_suspend,
1365 .resume = mptscsih_resume,
1366 #endif
1367 };
1368
1369 static int
1370 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1371 {
1372 MPT_SCSI_HOST *hd;
1373 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1374 unsigned long flags;
1375 int rc=1;
1376
1377 if (ioc->bus_type != FC)
1378 return 0;
1379
1380 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1381 ioc->name, event));
1382
1383 if (ioc->sh == NULL ||
1384 ((hd = shost_priv(ioc->sh)) == NULL))
1385 return 1;
1386
1387 switch (event) {
1388 case MPI_EVENT_RESCAN:
1389 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1390 if (ioc->fc_rescan_work_q) {
1391 queue_work(ioc->fc_rescan_work_q,
1392 &ioc->fc_rescan_work);
1393 }
1394 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1395 break;
1396 case MPI_EVENT_LINK_STATUS_CHANGE:
1397 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1398 if (ioc->fc_rescan_work_q) {
1399 queue_work(ioc->fc_rescan_work_q,
1400 &ioc->fc_lsc_work);
1401 }
1402 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1403 break;
1404 default:
1405 rc = mptscsih_event_process(ioc,pEvReply);
1406 break;
1407 }
1408 return rc;
1409 }
1410
1411 static int
1412 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1413 {
1414 int rc;
1415 unsigned long flags;
1416
1417 rc = mptscsih_ioc_reset(ioc,reset_phase);
1418 if ((ioc->bus_type != FC) || (!rc))
1419 return rc;
1420
1421
1422 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1423 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1424 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1425 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1426
1427 if (reset_phase == MPT_IOC_SETUP_RESET) {
1428 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1429 if (ioc->fc_rescan_work_q) {
1430 queue_work(ioc->fc_rescan_work_q,
1431 &ioc->fc_setup_reset_work);
1432 }
1433 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1434 }
1435
1436 else if (reset_phase == MPT_IOC_PRE_RESET) {
1437 }
1438
1439 else { /* MPT_IOC_POST_RESET */
1440 mptfc_SetFcPortPage1_defaults(ioc);
1441 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1442 if (ioc->fc_rescan_work_q) {
1443 queue_work(ioc->fc_rescan_work_q,
1444 &ioc->fc_rescan_work);
1445 }
1446 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1447 }
1448 return 1;
1449 }
1450
1451 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1452 /**
1453 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1454 *
1455 * Returns 0 for success, non-zero for failure.
1456 */
1457 static int __init
1458 mptfc_init(void)
1459 {
1460 int error;
1461
1462 show_mptmod_ver(my_NAME, my_VERSION);
1463
1464 /* sanity check module parameters */
1465 if (mptfc_dev_loss_tmo <= 0)
1466 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1467
1468 mptfc_transport_template =
1469 fc_attach_transport(&mptfc_transport_functions);
1470
1471 if (!mptfc_transport_template)
1472 return -ENODEV;
1473
1474 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER,
1475 "mptscsih_scandv_complete");
1476 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER,
1477 "mptscsih_scandv_complete");
1478 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER,
1479 "mptscsih_scandv_complete");
1480
1481 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1482 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1483
1484 error = pci_register_driver(&mptfc_driver);
1485 if (error)
1486 fc_release_transport(mptfc_transport_template);
1487
1488 return error;
1489 }
1490
1491 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1492 /**
1493 * mptfc_remove - Remove fc infrastructure for devices
1494 * @pdev: Pointer to pci_dev structure
1495 *
1496 */
1497 static void mptfc_remove(struct pci_dev *pdev)
1498 {
1499 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1500 struct mptfc_rport_info *p, *n;
1501 struct workqueue_struct *work_q;
1502 unsigned long flags;
1503 int ii;
1504
1505 /* destroy workqueue */
1506 if ((work_q=ioc->fc_rescan_work_q)) {
1507 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1508 ioc->fc_rescan_work_q = NULL;
1509 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1510 destroy_workqueue(work_q);
1511 }
1512
1513 fc_remove_host(ioc->sh);
1514
1515 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1516 list_del(&p->list);
1517 kfree(p);
1518 }
1519
1520 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1521 if (ioc->fc_data.fc_port_page1[ii].data) {
1522 pci_free_consistent(ioc->pcidev,
1523 ioc->fc_data.fc_port_page1[ii].pg_sz,
1524 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1525 ioc->fc_data.fc_port_page1[ii].dma);
1526 ioc->fc_data.fc_port_page1[ii].data = NULL;
1527 }
1528 }
1529
1530 mptscsih_remove(pdev);
1531 }
1532
1533 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1534 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1535 /**
1536 * mptfc_exit - Unregisters MPT adapter(s)
1537 *
1538 */
1539 static void __exit
1540 mptfc_exit(void)
1541 {
1542 pci_unregister_driver(&mptfc_driver);
1543 fc_release_transport(mptfc_transport_template);
1544
1545 mpt_reset_deregister(mptfcDoneCtx);
1546 mpt_event_deregister(mptfcDoneCtx);
1547
1548 mpt_deregister(mptfcInternalCtx);
1549 mpt_deregister(mptfcTaskCtx);
1550 mpt_deregister(mptfcDoneCtx);
1551 }
1552
1553 module_init(mptfc_init);
1554 module_exit(mptfc_exit);
Linux kernel - Deliverables
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