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net: DCB: Validate DCB_ATTR_DCB_BUFFER argument
[linux/fpc-iii.git] / drivers / message / fusion / mptfc.c
blob4314a3352b9689fdd2ecce688fd4c40b01448975
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
108 static struct scsi_host_template mptfc_driver_template = {
109 .module = THIS_MODULE,
110 .proc_name = "mptfc",
111 .show_info = mptscsih_show_info,
112 .name = "MPT FC Host",
113 .info = mptscsih_info,
114 .queuecommand = mptfc_qcmd,
115 .target_alloc = mptfc_target_alloc,
116 .slave_alloc = mptfc_slave_alloc,
117 .slave_configure = mptscsih_slave_configure,
118 .target_destroy = mptfc_target_destroy,
119 .slave_destroy = mptscsih_slave_destroy,
120 .change_queue_depth = mptscsih_change_queue_depth,
121 .eh_timed_out = fc_eh_timed_out,
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 = mptscsih_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 .shost_attrs = mptscsih_host_attrs,
133 };
134
135 /****************************************************************************
136 * Supported hardware
137 */
138
139 static struct pci_device_id mptfc_pci_table[] = {
140 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
141 PCI_ANY_ID, PCI_ANY_ID },
142 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
143 PCI_ANY_ID, PCI_ANY_ID },
144 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
145 PCI_ANY_ID, PCI_ANY_ID },
146 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
147 PCI_ANY_ID, PCI_ANY_ID },
148 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
149 PCI_ANY_ID, PCI_ANY_ID },
150 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
151 PCI_ANY_ID, PCI_ANY_ID },
152 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
153 PCI_ANY_ID, PCI_ANY_ID },
154 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
155 PCI_ANY_ID, PCI_ANY_ID },
156 { PCI_VENDOR_ID_BROCADE, MPI_MANUFACTPAGE_DEVICEID_FC949E,
157 PCI_ANY_ID, PCI_ANY_ID },
158 {0} /* Terminating entry */
159 };
160 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
161
162 static struct scsi_transport_template *mptfc_transport_template = NULL;
163
164 static struct fc_function_template mptfc_transport_functions = {
165 .dd_fcrport_size = 8,
166 .show_host_node_name = 1,
167 .show_host_port_name = 1,
168 .show_host_supported_classes = 1,
169 .show_host_port_id = 1,
170 .show_rport_supported_classes = 1,
171 .show_starget_node_name = 1,
172 .show_starget_port_name = 1,
173 .show_starget_port_id = 1,
174 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
175 .show_rport_dev_loss_tmo = 1,
176 .show_host_supported_speeds = 1,
177 .show_host_maxframe_size = 1,
178 .show_host_speed = 1,
179 .show_host_fabric_name = 1,
180 .show_host_port_type = 1,
181 .show_host_port_state = 1,
182 .show_host_symbolic_name = 1,
183 };
184
185 static int
186 mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
187 int (*func)(struct scsi_cmnd *SCpnt),
188 const char *caller)
189 {
190 MPT_SCSI_HOST *hd;
191 struct scsi_device *sdev = SCpnt->device;
192 struct Scsi_Host *shost = sdev->host;
193 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
194 unsigned long flags;
195 int ready;
196 MPT_ADAPTER *ioc;
197 int loops = 40; /* seconds */
198
199 hd = shost_priv(SCpnt->device->host);
200 ioc = hd->ioc;
201 spin_lock_irqsave(shost->host_lock, flags);
202 while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY
203 || (loops > 0 && ioc->active == 0)) {
204 spin_unlock_irqrestore(shost->host_lock, flags);
205 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
206 "mptfc_block_error_handler.%d: %d:%llu, port status is "
207 "%x, active flag %d, deferring %s recovery.\n",
208 ioc->name, ioc->sh->host_no,
209 SCpnt->device->id, SCpnt->device->lun,
210 ready, ioc->active, caller));
211 msleep(1000);
212 spin_lock_irqsave(shost->host_lock, flags);
213 loops --;
214 }
215 spin_unlock_irqrestore(shost->host_lock, flags);
216
217 if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata
218 || ioc->active == 0) {
219 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
220 "%s.%d: %d:%llu, failing recovery, "
221 "port state %x, active %d, vdevice %p.\n", caller,
222 ioc->name, ioc->sh->host_no,
223 SCpnt->device->id, SCpnt->device->lun, ready,
224 ioc->active, SCpnt->device->hostdata));
225 return FAILED;
226 }
227 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
228 "%s.%d: %d:%llu, executing recovery.\n", caller,
229 ioc->name, ioc->sh->host_no,
230 SCpnt->device->id, SCpnt->device->lun));
231 return (*func)(SCpnt);
232 }
233
234 static int
235 mptfc_abort(struct scsi_cmnd *SCpnt)
236 {
237 return
238 mptfc_block_error_handler(SCpnt, mptscsih_abort, __func__);
239 }
240
241 static int
242 mptfc_dev_reset(struct scsi_cmnd *SCpnt)
243 {
244 return
245 mptfc_block_error_handler(SCpnt, mptscsih_dev_reset, __func__);
246 }
247
248 static int
249 mptfc_bus_reset(struct scsi_cmnd *SCpnt)
250 {
251 return
252 mptfc_block_error_handler(SCpnt, mptscsih_bus_reset, __func__);
253 }
254
255 static void
256 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
257 {
258 if (timeout > 0)
259 rport->dev_loss_tmo = timeout;
260 else
261 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
262 }
263
264 static int
265 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
266 {
267 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
268 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
269
270 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
271 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
272 return 0;
273 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
274 return -1;
275 return 1;
276 }
277 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
278 return -1;
279 return 1;
280 }
281
282 static int
283 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
284 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
285 {
286 ConfigPageHeader_t hdr;
287 CONFIGPARMS cfg;
288 FCDevicePage0_t *ppage0_alloc, *fc;
289 dma_addr_t page0_dma;
290 int data_sz;
291 int ii;
292
293 FCDevicePage0_t *p0_array=NULL, *p_p0;
294 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
295
296 int rc = -ENOMEM;
297 U32 port_id = 0xffffff;
298 int num_targ = 0;
299 int max_bus = ioc->facts.MaxBuses;
300 int max_targ;
301
302 max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;
303
304 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
305 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
306 if (!p0_array)
307 goto out;
308
309 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
310 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
311 if (!pp0_array)
312 goto out;
313
314 do {
315 /* Get FC Device Page 0 header */
316 hdr.PageVersion = 0;
317 hdr.PageLength = 0;
318 hdr.PageNumber = 0;
319 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
320 cfg.cfghdr.hdr = &hdr;
321 cfg.physAddr = -1;
322 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
323 cfg.dir = 0;
324 cfg.pageAddr = port_id;
325 cfg.timeout = 0;
326
327 if ((rc = mpt_config(ioc, &cfg)) != 0)
328 break;
329
330 if (hdr.PageLength <= 0)
331 break;
332
333 data_sz = hdr.PageLength * 4;
334 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
335 &page0_dma);
336 rc = -ENOMEM;
337 if (!ppage0_alloc)
338 break;
339
340 cfg.physAddr = page0_dma;
341 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
342
343 if ((rc = mpt_config(ioc, &cfg)) == 0) {
344 ppage0_alloc->PortIdentifier =
345 le32_to_cpu(ppage0_alloc->PortIdentifier);
346
347 ppage0_alloc->WWNN.Low =
348 le32_to_cpu(ppage0_alloc->WWNN.Low);
349
350 ppage0_alloc->WWNN.High =
351 le32_to_cpu(ppage0_alloc->WWNN.High);
352
353 ppage0_alloc->WWPN.Low =
354 le32_to_cpu(ppage0_alloc->WWPN.Low);
355
356 ppage0_alloc->WWPN.High =
357 le32_to_cpu(ppage0_alloc->WWPN.High);
358
359 ppage0_alloc->BBCredit =
360 le16_to_cpu(ppage0_alloc->BBCredit);
361
362 ppage0_alloc->MaxRxFrameSize =
363 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
364
365 port_id = ppage0_alloc->PortIdentifier;
366 num_targ++;
367 *p_p0 = *ppage0_alloc; /* save data */
368 *p_pp0++ = p_p0++; /* save addr */
369 }
370 pci_free_consistent(ioc->pcidev, data_sz,
371 (u8 *) ppage0_alloc, page0_dma);
372 if (rc != 0)
373 break;
374
375 } while (port_id <= 0xff0000);
376
377 if (num_targ) {
378 /* sort array */
379 if (num_targ > 1)
380 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
381 mptfc_FcDevPage0_cmp_func, NULL);
382 /* call caller's func for each targ */
383 for (ii = 0; ii < num_targ; ii++) {
384 fc = *(pp0_array+ii);
385 func(ioc, ioc_port, fc);
386 }
387 }
388
389 out:
390 kfree(pp0_array);
391 kfree(p0_array);
392 return rc;
393 }
394
395 static int
396 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
397 {
398 /* not currently usable */
399 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
400 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
401 return -1;
402
403 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
404 return -1;
405
406 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
407 return -1;
408
409 /*
410 * board data structure already normalized to platform endianness
411 * shifted to avoid unaligned access on 64 bit architecture
412 */
413 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
414 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
415 rid->port_id = pg0->PortIdentifier;
416 rid->roles = FC_RPORT_ROLE_UNKNOWN;
417
418 return 0;
419 }
420
421 static void
422 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
423 {
424 struct fc_rport_identifiers rport_ids;
425 struct fc_rport *rport;
426 struct mptfc_rport_info *ri;
427 int new_ri = 1;
428 u64 pn, nn;
429 VirtTarget *vtarget;
430 u32 roles = FC_RPORT_ROLE_UNKNOWN;
431
432 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
433 return;
434
435 roles |= FC_RPORT_ROLE_FCP_TARGET;
436 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
437 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
438
439 /* scan list looking for a match */
440 list_for_each_entry(ri, &ioc->fc_rports, list) {
441 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
442 if (pn == rport_ids.port_name) { /* match */
443 list_move_tail(&ri->list, &ioc->fc_rports);
444 new_ri = 0;
445 break;
446 }
447 }
448 if (new_ri) { /* allocate one */
449 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
450 if (!ri)
451 return;
452 list_add_tail(&ri->list, &ioc->fc_rports);
453 }
454
455 ri->pg0 = *pg0; /* add/update pg0 data */
456 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
457
458 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
459 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
460 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
461 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
462 if (rport) {
463 ri->rport = rport;
464 if (new_ri) /* may have been reset by user */
465 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
466 /*
467 * if already mapped, remap here. If not mapped,
468 * target_alloc will allocate vtarget and map,
469 * slave_alloc will fill in vdevice from vtarget.
470 */
471 if (ri->starget) {
472 vtarget = ri->starget->hostdata;
473 if (vtarget) {
474 vtarget->id = pg0->CurrentTargetID;
475 vtarget->channel = pg0->CurrentBus;
476 vtarget->deleted = 0;
477 }
478 }
479 *((struct mptfc_rport_info **)rport->dd_data) = ri;
480 /* scan will be scheduled once rport becomes a target */
481 fc_remote_port_rolechg(rport,roles);
482
483 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
484 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
485 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
486 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
487 "rport tid %d, tmo %d\n",
488 ioc->name,
489 ioc->sh->host_no,
490 pg0->PortIdentifier,
491 (unsigned long long)nn,
492 (unsigned long long)pn,
493 pg0->CurrentTargetID,
494 ri->rport->scsi_target_id,
495 ri->rport->dev_loss_tmo));
496 } else {
497 list_del(&ri->list);
498 kfree(ri);
499 ri = NULL;
500 }
501 }
502 }
503
504 /*
505 * OS entry point to allow for host driver to free allocated memory
506 * Called if no device present or device being unloaded
507 */
508 static void
509 mptfc_target_destroy(struct scsi_target *starget)
510 {
511 struct fc_rport *rport;
512 struct mptfc_rport_info *ri;
513
514 rport = starget_to_rport(starget);
515 if (rport) {
516 ri = *((struct mptfc_rport_info **)rport->dd_data);
517 if (ri) /* better be! */
518 ri->starget = NULL;
519 }
520 kfree(starget->hostdata);
521 starget->hostdata = NULL;
522 }
523
524 /*
525 * OS entry point to allow host driver to alloc memory
526 * for each scsi target. Called once per device the bus scan.
527 * Return non-zero if allocation fails.
528 */
529 static int
530 mptfc_target_alloc(struct scsi_target *starget)
531 {
532 VirtTarget *vtarget;
533 struct fc_rport *rport;
534 struct mptfc_rport_info *ri;
535 int rc;
536
537 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
538 if (!vtarget)
539 return -ENOMEM;
540 starget->hostdata = vtarget;
541
542 rc = -ENODEV;
543 rport = starget_to_rport(starget);
544 if (rport) {
545 ri = *((struct mptfc_rport_info **)rport->dd_data);
546 if (ri) { /* better be! */
547 vtarget->id = ri->pg0.CurrentTargetID;
548 vtarget->channel = ri->pg0.CurrentBus;
549 ri->starget = starget;
550 rc = 0;
551 }
552 }
553 if (rc != 0) {
554 kfree(vtarget);
555 starget->hostdata = NULL;
556 }
557
558 return rc;
559 }
560 /*
561 * mptfc_dump_lun_info
562 * @ioc
563 * @rport
564 * @sdev
565 *
566 */
567 static void
568 mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
569 VirtTarget *vtarget)
570 {
571 u64 nn, pn;
572 struct mptfc_rport_info *ri;
573
574 ri = *((struct mptfc_rport_info **)rport->dd_data);
575 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
576 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
577 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
578 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
579 "CurrentTargetID %d, %x %llx %llx\n",
580 ioc->name,
581 sdev->host->host_no,
582 vtarget->num_luns,
583 sdev->id, ri->pg0.CurrentTargetID,
584 ri->pg0.PortIdentifier,
585 (unsigned long long)pn,
586 (unsigned long long)nn));
587 }
588
589
590 /*
591 * OS entry point to allow host driver to alloc memory
592 * for each scsi device. Called once per device the bus scan.
593 * Return non-zero if allocation fails.
594 * Init memory once per LUN.
595 */
596 static int
597 mptfc_slave_alloc(struct scsi_device *sdev)
598 {
599 MPT_SCSI_HOST *hd;
600 VirtTarget *vtarget;
601 VirtDevice *vdevice;
602 struct scsi_target *starget;
603 struct fc_rport *rport;
604 MPT_ADAPTER *ioc;
605
606 starget = scsi_target(sdev);
607 rport = starget_to_rport(starget);
608
609 if (!rport || fc_remote_port_chkready(rport))
610 return -ENXIO;
611
612 hd = shost_priv(sdev->host);
613 ioc = hd->ioc;
614
615 vdevice = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
616 if (!vdevice) {
617 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
618 ioc->name, sizeof(VirtDevice));
619 return -ENOMEM;
620 }
621
622
623 sdev->hostdata = vdevice;
624 vtarget = starget->hostdata;
625
626 if (vtarget->num_luns == 0) {
627 vtarget->ioc_id = ioc->id;
628 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
629 }
630
631 vdevice->vtarget = vtarget;
632 vdevice->lun = sdev->lun;
633
634 vtarget->num_luns++;
635
636
637 mptfc_dump_lun_info(ioc, rport, sdev, vtarget);
638
639 return 0;
640 }
641
642 static int
643 mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
644 {
645 struct mptfc_rport_info *ri;
646 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
647 int err;
648 VirtDevice *vdevice = SCpnt->device->hostdata;
649
650 if (!vdevice || !vdevice->vtarget) {
651 SCpnt->result = DID_NO_CONNECT << 16;
652 SCpnt->scsi_done(SCpnt);
653 return 0;
654 }
655
656 err = fc_remote_port_chkready(rport);
657 if (unlikely(err)) {
658 SCpnt->result = err;
659 SCpnt->scsi_done(SCpnt);
660 return 0;
661 }
662
663 /* dd_data is null until finished adding target */
664 ri = *((struct mptfc_rport_info **)rport->dd_data);
665 if (unlikely(!ri)) {
666 SCpnt->result = DID_IMM_RETRY << 16;
667 SCpnt->scsi_done(SCpnt);
668 return 0;
669 }
670
671 return mptscsih_qcmd(SCpnt);
672 }
673
674 /*
675 * mptfc_display_port_link_speed - displaying link speed
676 * @ioc: Pointer to MPT_ADAPTER structure
677 * @portnum: IOC Port number
678 * @pp0dest: port page0 data payload
679 *
680 */
681 static void
682 mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
683 {
684 u8 old_speed, new_speed, state;
685 char *old, *new;
686
687 if (portnum >= 2)
688 return;
689
690 old_speed = ioc->fc_link_speed[portnum];
691 new_speed = pp0dest->CurrentSpeed;
692 state = pp0dest->PortState;
693
694 if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
695 new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UNKNOWN) {
696
697 old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
698 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
699 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
700 "Unknown";
701 new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
702 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
703 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
704 "Unknown";
705 if (old_speed == 0)
706 printk(MYIOC_s_NOTE_FMT
707 "FC Link Established, Speed = %s\n",
708 ioc->name, new);
709 else if (old_speed != new_speed)
710 printk(MYIOC_s_WARN_FMT
711 "FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
712 ioc->name, old, new);
713
714 ioc->fc_link_speed[portnum] = new_speed;
715 }
716 }
717
718 /*
719 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
720 * @ioc: Pointer to MPT_ADAPTER structure
721 * @portnum: IOC Port number
722 *
723 * Return: 0 for success
724 * -ENOMEM if no memory available
725 * -EPERM if not allowed due to ISR context
726 * -EAGAIN if no msg frames currently available
727 * -EFAULT for non-successful reply or no reply (timeout)
728 * -EINVAL portnum arg out of range (hardwired to two elements)
729 */
730 static int
731 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
732 {
733 ConfigPageHeader_t hdr;
734 CONFIGPARMS cfg;
735 FCPortPage0_t *ppage0_alloc;
736 FCPortPage0_t *pp0dest;
737 dma_addr_t page0_dma;
738 int data_sz;
739 int copy_sz;
740 int rc;
741 int count = 400;
742
743 if (portnum > 1)
744 return -EINVAL;
745
746 /* Get FCPort Page 0 header */
747 hdr.PageVersion = 0;
748 hdr.PageLength = 0;
749 hdr.PageNumber = 0;
750 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
751 cfg.cfghdr.hdr = &hdr;
752 cfg.physAddr = -1;
753 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
754 cfg.dir = 0;
755 cfg.pageAddr = portnum;
756 cfg.timeout = 0;
757
758 if ((rc = mpt_config(ioc, &cfg)) != 0)
759 return rc;
760
761 if (hdr.PageLength == 0)
762 return 0;
763
764 data_sz = hdr.PageLength * 4;
765 rc = -ENOMEM;
766 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
767 if (ppage0_alloc) {
768
769 try_again:
770 memset((u8 *)ppage0_alloc, 0, data_sz);
771 cfg.physAddr = page0_dma;
772 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
773
774 if ((rc = mpt_config(ioc, &cfg)) == 0) {
775 /* save the data */
776 pp0dest = &ioc->fc_port_page0[portnum];
777 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
778 memcpy(pp0dest, ppage0_alloc, copy_sz);
779
780 /*
781 * Normalize endianness of structure data,
782 * by byte-swapping all > 1 byte fields!
783 */
784 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
785 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
786 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
787 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
788 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
789 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
790 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
791 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
792 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
793 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
794 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
795 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
796 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
797 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
798 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
799 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
800
801 /*
802 * if still doing discovery,
803 * hang loose a while until finished
804 */
805 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
806 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
807 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
808 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
809 if (count-- > 0) {
810 msleep(100);
811 goto try_again;
812 }
813 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
814 " complete.\n",
815 ioc->name);
816 }
817 mptfc_display_port_link_speed(ioc, portnum, pp0dest);
818 }
819
820 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
821 }
822
823 return rc;
824 }
825
826 static int
827 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
828 {
829 ConfigPageHeader_t hdr;
830 CONFIGPARMS cfg;
831 int rc;
832
833 if (portnum > 1)
834 return -EINVAL;
835
836 if (!(ioc->fc_data.fc_port_page1[portnum].data))
837 return -EINVAL;
838
839 /* get fcport page 1 header */
840 hdr.PageVersion = 0;
841 hdr.PageLength = 0;
842 hdr.PageNumber = 1;
843 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
844 cfg.cfghdr.hdr = &hdr;
845 cfg.physAddr = -1;
846 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
847 cfg.dir = 0;
848 cfg.pageAddr = portnum;
849 cfg.timeout = 0;
850
851 if ((rc = mpt_config(ioc, &cfg)) != 0)
852 return rc;
853
854 if (hdr.PageLength == 0)
855 return -ENODEV;
856
857 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
858 return -EINVAL;
859
860 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
861 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
862 cfg.dir = 1;
863
864 rc = mpt_config(ioc, &cfg);
865
866 return rc;
867 }
868
869 static int
870 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
871 {
872 ConfigPageHeader_t hdr;
873 CONFIGPARMS cfg;
874 FCPortPage1_t *page1_alloc;
875 dma_addr_t page1_dma;
876 int data_sz;
877 int rc;
878
879 if (portnum > 1)
880 return -EINVAL;
881
882 /* get fcport page 1 header */
883 hdr.PageVersion = 0;
884 hdr.PageLength = 0;
885 hdr.PageNumber = 1;
886 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
887 cfg.cfghdr.hdr = &hdr;
888 cfg.physAddr = -1;
889 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
890 cfg.dir = 0;
891 cfg.pageAddr = portnum;
892 cfg.timeout = 0;
893
894 if ((rc = mpt_config(ioc, &cfg)) != 0)
895 return rc;
896
897 if (hdr.PageLength == 0)
898 return -ENODEV;
899
900 start_over:
901
902 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
903 data_sz = hdr.PageLength * 4;
904 if (data_sz < sizeof(FCPortPage1_t))
905 data_sz = sizeof(FCPortPage1_t);
906
907 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
908 data_sz,
909 &page1_dma);
910 if (!page1_alloc)
911 return -ENOMEM;
912 }
913 else {
914 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
915 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
916 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
917 if (hdr.PageLength * 4 > data_sz) {
918 ioc->fc_data.fc_port_page1[portnum].data = NULL;
919 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
920 page1_alloc, page1_dma);
921 goto start_over;
922 }
923 }
924
925 memset(page1_alloc,0,data_sz);
926
927 cfg.physAddr = page1_dma;
928 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
929
930 if ((rc = mpt_config(ioc, &cfg)) == 0) {
931 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
932 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
933 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
934 }
935 else {
936 ioc->fc_data.fc_port_page1[portnum].data = NULL;
937 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
938 page1_alloc, page1_dma);
939 }
940
941 return rc;
942 }
943
944 static void
945 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
946 {
947 int ii;
948 FCPortPage1_t *pp1;
949
950 #define MPTFC_FW_DEVICE_TIMEOUT (1)
951 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
952 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
953 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
954
955 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
956 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
957 continue;
958 pp1 = ioc->fc_data.fc_port_page1[ii].data;
959 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
960 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
961 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
962 && ((pp1->Flags & OFF_FLAGS) == 0))
963 continue;
964 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
965 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
966 pp1->Flags &= ~OFF_FLAGS;
967 pp1->Flags |= ON_FLAGS;
968 mptfc_WriteFcPortPage1(ioc, ii);
969 }
970 }
971
972
973 static void
974 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
975 {
976 unsigned class = 0;
977 unsigned cos = 0;
978 unsigned speed;
979 unsigned port_type;
980 unsigned port_state;
981 FCPortPage0_t *pp0;
982 struct Scsi_Host *sh;
983 char *sn;
984
985 /* don't know what to do as only one scsi (fc) host was allocated */
986 if (portnum != 0)
987 return;
988
989 pp0 = &ioc->fc_port_page0[portnum];
990 sh = ioc->sh;
991
992 sn = fc_host_symbolic_name(sh);
993 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
994 ioc->prod_name,
995 MPT_FW_REV_MAGIC_ID_STRING,
996 ioc->facts.FWVersion.Word);
997
998 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
999
1000 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
1001
1002 fc_host_node_name(sh) =
1003 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1004
1005 fc_host_port_name(sh) =
1006 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1007
1008 fc_host_port_id(sh) = pp0->PortIdentifier;
1009
1010 class = pp0->SupportedServiceClass;
1011 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1012 cos |= FC_COS_CLASS1;
1013 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1014 cos |= FC_COS_CLASS2;
1015 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1016 cos |= FC_COS_CLASS3;
1017 fc_host_supported_classes(sh) = cos;
1018
1019 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1020 speed = FC_PORTSPEED_1GBIT;
1021 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1022 speed = FC_PORTSPEED_2GBIT;
1023 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1024 speed = FC_PORTSPEED_4GBIT;
1025 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1026 speed = FC_PORTSPEED_10GBIT;
1027 else
1028 speed = FC_PORTSPEED_UNKNOWN;
1029 fc_host_speed(sh) = speed;
1030
1031 speed = 0;
1032 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1033 speed |= FC_PORTSPEED_1GBIT;
1034 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1035 speed |= FC_PORTSPEED_2GBIT;
1036 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1037 speed |= FC_PORTSPEED_4GBIT;
1038 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1039 speed |= FC_PORTSPEED_10GBIT;
1040 fc_host_supported_speeds(sh) = speed;
1041
1042 port_state = FC_PORTSTATE_UNKNOWN;
1043 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1044 port_state = FC_PORTSTATE_ONLINE;
1045 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1046 port_state = FC_PORTSTATE_LINKDOWN;
1047 fc_host_port_state(sh) = port_state;
1048
1049 port_type = FC_PORTTYPE_UNKNOWN;
1050 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1051 port_type = FC_PORTTYPE_PTP;
1052 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1053 port_type = FC_PORTTYPE_LPORT;
1054 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1055 port_type = FC_PORTTYPE_NLPORT;
1056 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1057 port_type = FC_PORTTYPE_NPORT;
1058 fc_host_port_type(sh) = port_type;
1059
1060 fc_host_fabric_name(sh) =
1061 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1062 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1063 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1064
1065 }
1066
1067 static void
1068 mptfc_link_status_change(struct work_struct *work)
1069 {
1070 MPT_ADAPTER *ioc =
1071 container_of(work, MPT_ADAPTER, fc_rescan_work);
1072 int ii;
1073
1074 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1075 (void) mptfc_GetFcPortPage0(ioc, ii);
1076
1077 }
1078
1079 static void
1080 mptfc_setup_reset(struct work_struct *work)
1081 {
1082 MPT_ADAPTER *ioc =
1083 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1084 u64 pn;
1085 struct mptfc_rport_info *ri;
1086 struct scsi_target *starget;
1087 VirtTarget *vtarget;
1088
1089 /* reset about to happen, delete (block) all rports */
1090 list_for_each_entry(ri, &ioc->fc_rports, list) {
1091 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1092 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1093 fc_remote_port_delete(ri->rport); /* won't sleep */
1094 ri->rport = NULL;
1095 starget = ri->starget;
1096 if (starget) {
1097 vtarget = starget->hostdata;
1098 if (vtarget)
1099 vtarget->deleted = 1;
1100 }
1101
1102 pn = (u64)ri->pg0.WWPN.High << 32 |
1103 (u64)ri->pg0.WWPN.Low;
1104 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1105 "mptfc_setup_reset.%d: %llx deleted\n",
1106 ioc->name,
1107 ioc->sh->host_no,
1108 (unsigned long long)pn));
1109 }
1110 }
1111 }
1112
1113 static void
1114 mptfc_rescan_devices(struct work_struct *work)
1115 {
1116 MPT_ADAPTER *ioc =
1117 container_of(work, MPT_ADAPTER, fc_rescan_work);
1118 int ii;
1119 u64 pn;
1120 struct mptfc_rport_info *ri;
1121 struct scsi_target *starget;
1122 VirtTarget *vtarget;
1123
1124 /* start by tagging all ports as missing */
1125 list_for_each_entry(ri, &ioc->fc_rports, list) {
1126 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1127 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1128 }
1129 }
1130
1131 /*
1132 * now rescan devices known to adapter,
1133 * will reregister existing rports
1134 */
1135 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1136 (void) mptfc_GetFcPortPage0(ioc, ii);
1137 mptfc_init_host_attr(ioc, ii); /* refresh */
1138 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1139 }
1140
1141 /* delete devices still missing */
1142 list_for_each_entry(ri, &ioc->fc_rports, list) {
1143 /* if newly missing, delete it */
1144 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1145
1146 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1147 MPT_RPORT_INFO_FLAGS_MISSING);
1148 fc_remote_port_delete(ri->rport); /* won't sleep */
1149 ri->rport = NULL;
1150 starget = ri->starget;
1151 if (starget) {
1152 vtarget = starget->hostdata;
1153 if (vtarget)
1154 vtarget->deleted = 1;
1155 }
1156
1157 pn = (u64)ri->pg0.WWPN.High << 32 |
1158 (u64)ri->pg0.WWPN.Low;
1159 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1160 "mptfc_rescan.%d: %llx deleted\n",
1161 ioc->name,
1162 ioc->sh->host_no,
1163 (unsigned long long)pn));
1164 }
1165 }
1166 }
1167
1168 static int
1169 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1170 {
1171 struct Scsi_Host *sh;
1172 MPT_SCSI_HOST *hd;
1173 MPT_ADAPTER *ioc;
1174 unsigned long flags;
1175 int ii;
1176 int numSGE = 0;
1177 int scale;
1178 int ioc_cap;
1179 int error=0;
1180 int r;
1181
1182 if ((r = mpt_attach(pdev,id)) != 0)
1183 return r;
1184
1185 ioc = pci_get_drvdata(pdev);
1186 ioc->DoneCtx = mptfcDoneCtx;
1187 ioc->TaskCtx = mptfcTaskCtx;
1188 ioc->InternalCtx = mptfcInternalCtx;
1189
1190 /* Added sanity check on readiness of the MPT adapter.
1191 */
1192 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1193 printk(MYIOC_s_WARN_FMT
1194 "Skipping because it's not operational!\n",
1195 ioc->name);
1196 error = -ENODEV;
1197 goto out_mptfc_probe;
1198 }
1199
1200 if (!ioc->active) {
1201 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1202 ioc->name);
1203 error = -ENODEV;
1204 goto out_mptfc_probe;
1205 }
1206
1207 /* Sanity check - ensure at least 1 port is INITIATOR capable
1208 */
1209 ioc_cap = 0;
1210 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1211 if (ioc->pfacts[ii].ProtocolFlags &
1212 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1213 ioc_cap ++;
1214 }
1215
1216 if (!ioc_cap) {
1217 printk(MYIOC_s_WARN_FMT
1218 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1219 ioc->name, ioc);
1220 return 0;
1221 }
1222
1223 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1224
1225 if (!sh) {
1226 printk(MYIOC_s_WARN_FMT
1227 "Unable to register controller with SCSI subsystem\n",
1228 ioc->name);
1229 error = -1;
1230 goto out_mptfc_probe;
1231 }
1232
1233 spin_lock_init(&ioc->fc_rescan_work_lock);
1234 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1235 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1236 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1237
1238 spin_lock_irqsave(&ioc->FreeQlock, flags);
1239
1240 /* Attach the SCSI Host to the IOC structure
1241 */
1242 ioc->sh = sh;
1243
1244 sh->io_port = 0;
1245 sh->n_io_port = 0;
1246 sh->irq = 0;
1247
1248 /* set 16 byte cdb's */
1249 sh->max_cmd_len = 16;
1250
1251 sh->max_id = ioc->pfacts->MaxDevices;
1252 sh->max_lun = max_lun;
1253
1254 /* Required entry.
1255 */
1256 sh->unique_id = ioc->id;
1257
1258 /* Verify that we won't exceed the maximum
1259 * number of chain buffers
1260 * We can optimize: ZZ = req_sz/sizeof(SGE)
1261 * For 32bit SGE's:
1262 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1263 * + (req_sz - 64)/sizeof(SGE)
1264 * A slightly different algorithm is required for
1265 * 64bit SGEs.
1266 */
1267 scale = ioc->req_sz/ioc->SGE_size;
1268 if (ioc->sg_addr_size == sizeof(u64)) {
1269 numSGE = (scale - 1) *
1270 (ioc->facts.MaxChainDepth-1) + scale +
1271 (ioc->req_sz - 60) / ioc->SGE_size;
1272 } else {
1273 numSGE = 1 + (scale - 1) *
1274 (ioc->facts.MaxChainDepth-1) + scale +
1275 (ioc->req_sz - 64) / ioc->SGE_size;
1276 }
1277
1278 if (numSGE < sh->sg_tablesize) {
1279 /* Reset this value */
1280 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1281 "Resetting sg_tablesize to %d from %d\n",
1282 ioc->name, numSGE, sh->sg_tablesize));
1283 sh->sg_tablesize = numSGE;
1284 }
1285
1286 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1287
1288 hd = shost_priv(sh);
1289 hd->ioc = ioc;
1290
1291 /* SCSI needs scsi_cmnd lookup table!
1292 * (with size equal to req_depth*PtrSz!)
1293 */
1294 ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_KERNEL);
1295 if (!ioc->ScsiLookup) {
1296 error = -ENOMEM;
1297 goto out_mptfc_probe;
1298 }
1299 spin_lock_init(&ioc->scsi_lookup_lock);
1300
1301 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1302 ioc->name, ioc->ScsiLookup));
1303
1304 hd->last_queue_full = 0;
1305
1306 sh->transportt = mptfc_transport_template;
1307 error = scsi_add_host (sh, &ioc->pcidev->dev);
1308 if(error) {
1309 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1310 "scsi_add_host failed\n", ioc->name));
1311 goto out_mptfc_probe;
1312 }
1313
1314 /* initialize workqueue */
1315
1316 snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
1317 "mptfc_wq_%d", sh->host_no);
1318 ioc->fc_rescan_work_q =
1319 alloc_ordered_workqueue(ioc->fc_rescan_work_q_name,
1320 WQ_MEM_RECLAIM);
1321 if (!ioc->fc_rescan_work_q) {
1322 error = -ENOMEM;
1323 goto out_mptfc_host;
1324 }
1325
1326 /*
1327 * Pre-fetch FC port WWN and stuff...
1328 * (FCPortPage0_t stuff)
1329 */
1330 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1331 (void) mptfc_GetFcPortPage0(ioc, ii);
1332 }
1333 mptfc_SetFcPortPage1_defaults(ioc);
1334
1335 /*
1336 * scan for rports -
1337 * by doing it via the workqueue, some locking is eliminated
1338 */
1339
1340 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1341 flush_workqueue(ioc->fc_rescan_work_q);
1342
1343 return 0;
1344
1345 out_mptfc_host:
1346 scsi_remove_host(sh);
1347
1348 out_mptfc_probe:
1349
1350 mptscsih_remove(pdev);
1351 return error;
1352 }
1353
1354 static struct pci_driver mptfc_driver = {
1355 .name = "mptfc",
1356 .id_table = mptfc_pci_table,
1357 .probe = mptfc_probe,
1358 .remove = mptfc_remove,
1359 .shutdown = mptscsih_shutdown,
1360 #ifdef CONFIG_PM
1361 .suspend = mptscsih_suspend,
1362 .resume = mptscsih_resume,
1363 #endif
1364 };
1365
1366 static int
1367 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1368 {
1369 MPT_SCSI_HOST *hd;
1370 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1371 unsigned long flags;
1372 int rc=1;
1373
1374 if (ioc->bus_type != FC)
1375 return 0;
1376
1377 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1378 ioc->name, event));
1379
1380 if (ioc->sh == NULL ||
1381 ((hd = shost_priv(ioc->sh)) == NULL))
1382 return 1;
1383
1384 switch (event) {
1385 case MPI_EVENT_RESCAN:
1386 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1387 if (ioc->fc_rescan_work_q) {
1388 queue_work(ioc->fc_rescan_work_q,
1389 &ioc->fc_rescan_work);
1390 }
1391 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1392 break;
1393 case MPI_EVENT_LINK_STATUS_CHANGE:
1394 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1395 if (ioc->fc_rescan_work_q) {
1396 queue_work(ioc->fc_rescan_work_q,
1397 &ioc->fc_lsc_work);
1398 }
1399 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1400 break;
1401 default:
1402 rc = mptscsih_event_process(ioc,pEvReply);
1403 break;
1404 }
1405 return rc;
1406 }
1407
1408 static int
1409 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1410 {
1411 int rc;
1412 unsigned long flags;
1413
1414 rc = mptscsih_ioc_reset(ioc,reset_phase);
1415 if ((ioc->bus_type != FC) || (!rc))
1416 return rc;
1417
1418
1419 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1420 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1421 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1422 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1423
1424 if (reset_phase == MPT_IOC_SETUP_RESET) {
1425 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1426 if (ioc->fc_rescan_work_q) {
1427 queue_work(ioc->fc_rescan_work_q,
1428 &ioc->fc_setup_reset_work);
1429 }
1430 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1431 }
1432
1433 else if (reset_phase == MPT_IOC_PRE_RESET) {
1434 }
1435
1436 else { /* MPT_IOC_POST_RESET */
1437 mptfc_SetFcPortPage1_defaults(ioc);
1438 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1439 if (ioc->fc_rescan_work_q) {
1440 queue_work(ioc->fc_rescan_work_q,
1441 &ioc->fc_rescan_work);
1442 }
1443 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1444 }
1445 return 1;
1446 }
1447
1448 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1449 /**
1450 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1451 *
1452 * Returns 0 for success, non-zero for failure.
1453 */
1454 static int __init
1455 mptfc_init(void)
1456 {
1457 int error;
1458
1459 show_mptmod_ver(my_NAME, my_VERSION);
1460
1461 /* sanity check module parameters */
1462 if (mptfc_dev_loss_tmo <= 0)
1463 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1464
1465 mptfc_transport_template =
1466 fc_attach_transport(&mptfc_transport_functions);
1467
1468 if (!mptfc_transport_template)
1469 return -ENODEV;
1470
1471 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER,
1472 "mptscsih_scandv_complete");
1473 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER,
1474 "mptscsih_scandv_complete");
1475 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER,
1476 "mptscsih_scandv_complete");
1477
1478 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1479 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1480
1481 error = pci_register_driver(&mptfc_driver);
1482 if (error)
1483 fc_release_transport(mptfc_transport_template);
1484
1485 return error;
1486 }
1487
1488 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1489 /**
1490 * mptfc_remove - Remove fc infrastructure for devices
1491 * @pdev: Pointer to pci_dev structure
1492 *
1493 */
1494 static void mptfc_remove(struct pci_dev *pdev)
1495 {
1496 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1497 struct mptfc_rport_info *p, *n;
1498 struct workqueue_struct *work_q;
1499 unsigned long flags;
1500 int ii;
1501
1502 /* destroy workqueue */
1503 if ((work_q=ioc->fc_rescan_work_q)) {
1504 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1505 ioc->fc_rescan_work_q = NULL;
1506 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1507 destroy_workqueue(work_q);
1508 }
1509
1510 fc_remove_host(ioc->sh);
1511
1512 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1513 list_del(&p->list);
1514 kfree(p);
1515 }
1516
1517 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1518 if (ioc->fc_data.fc_port_page1[ii].data) {
1519 pci_free_consistent(ioc->pcidev,
1520 ioc->fc_data.fc_port_page1[ii].pg_sz,
1521 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1522 ioc->fc_data.fc_port_page1[ii].dma);
1523 ioc->fc_data.fc_port_page1[ii].data = NULL;
1524 }
1525 }
1526
1527 scsi_remove_host(ioc->sh);
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 with added FPC-III support