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drm/panthor: Don't add write fences to the shared BOs
[drm/drm-misc.git] / drivers / message / fusion / mptfc.c
blob91242f26defb008e0451cbc07074fc386565dfab
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>
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 const 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 .dma_alignment = 511,
133 .shost_groups = mptscsih_host_attr_groups,
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 fc_rport *rport)
188 {
189 MPT_SCSI_HOST *hd;
190 struct Scsi_Host *shost = rport_to_shost(rport);
191 unsigned long flags;
192 int ready;
193 MPT_ADAPTER *ioc;
194 int loops = 40; /* seconds */
195
196 hd = shost_priv(shost);
197 ioc = hd->ioc;
198 spin_lock_irqsave(shost->host_lock, flags);
199 while ((ready = fc_remote_port_chkready(rport) >> 16) == DID_IMM_RETRY
200 || (loops > 0 && ioc->active == 0)) {
201 spin_unlock_irqrestore(shost->host_lock, flags);
202 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
203 "mptfc_block_error_handler.%d: %s, port status is "
204 "%x, active flag %d, deferring recovery.\n",
205 ioc->name, ioc->sh->host_no,
206 dev_name(&rport->dev), ready, ioc->active));
207 msleep(1000);
208 spin_lock_irqsave(shost->host_lock, flags);
209 loops --;
210 }
211 spin_unlock_irqrestore(shost->host_lock, flags);
212
213 if (ready == DID_NO_CONNECT || ioc->active == 0) {
214 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
215 "mpt_block_error_handler.%d: %s, failing recovery, "
216 "port state %x, active %d.\n",
217 ioc->name, ioc->sh->host_no,
218 dev_name(&rport->dev), ready, ioc->active));
219 return FAILED;
220 }
221 return SUCCESS;
222 }
223
224 static int
225 mptfc_abort(struct scsi_cmnd *SCpnt)
226 {
227 struct Scsi_Host *shost = SCpnt->device->host;
228 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
229 MPT_SCSI_HOST __maybe_unused *hd = shost_priv(shost);
230 int rtn;
231
232 rtn = mptfc_block_error_handler(rport);
233 if (rtn == SUCCESS) {
234 dfcprintk (hd->ioc, printk(MYIOC_s_DEBUG_FMT
235 "%s.%d: %d:%llu, executing recovery.\n", __func__,
236 hd->ioc->name, shost->host_no,
237 SCpnt->device->id, SCpnt->device->lun));
238 rtn = mptscsih_abort(SCpnt);
239 }
240 return rtn;
241 }
242
243 static int
244 mptfc_dev_reset(struct scsi_cmnd *SCpnt)
245 {
246 struct Scsi_Host *shost = SCpnt->device->host;
247 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
248 MPT_SCSI_HOST __maybe_unused *hd = shost_priv(shost);
249 int rtn;
250
251 rtn = mptfc_block_error_handler(rport);
252 if (rtn == SUCCESS) {
253 dfcprintk (hd->ioc, printk(MYIOC_s_DEBUG_FMT
254 "%s.%d: %d:%llu, executing recovery.\n", __func__,
255 hd->ioc->name, shost->host_no,
256 SCpnt->device->id, SCpnt->device->lun));
257 rtn = mptscsih_dev_reset(SCpnt);
258 }
259 return rtn;
260 }
261
262 static int
263 mptfc_bus_reset(struct scsi_cmnd *SCpnt)
264 {
265 struct Scsi_Host *shost = SCpnt->device->host;
266 MPT_SCSI_HOST __maybe_unused *hd = shost_priv(shost);
267 int channel = SCpnt->device->channel;
268 struct mptfc_rport_info *ri;
269 int rtn = FAILED;
270
271 list_for_each_entry(ri, &hd->ioc->fc_rports, list) {
272 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
273 VirtTarget *vtarget = ri->starget->hostdata;
274
275 if (!vtarget || vtarget->channel != channel)
276 continue;
277 rtn = fc_block_rport(ri->rport);
278 if (rtn != 0)
279 break;
280 }
281 }
282 if (rtn == 0) {
283 dfcprintk (hd->ioc, printk(MYIOC_s_DEBUG_FMT
284 "%s.%d: %d:%llu, executing recovery.\n", __func__,
285 hd->ioc->name, shost->host_no,
286 SCpnt->device->id, SCpnt->device->lun));
287 rtn = mptscsih_bus_reset(SCpnt);
288 }
289 return rtn;
290 }
291
292 static void
293 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
294 {
295 if (timeout > 0)
296 rport->dev_loss_tmo = timeout;
297 else
298 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
299 }
300
301 static int
302 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
303 {
304 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
305 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
306
307 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
308 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
309 return 0;
310 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
311 return -1;
312 return 1;
313 }
314 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
315 return -1;
316 return 1;
317 }
318
319 static int
320 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
321 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
322 {
323 ConfigPageHeader_t hdr;
324 CONFIGPARMS cfg;
325 FCDevicePage0_t *ppage0_alloc, *fc;
326 dma_addr_t page0_dma;
327 int data_sz;
328 int ii;
329
330 FCDevicePage0_t *p0_array=NULL, *p_p0;
331 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
332
333 int rc = -ENOMEM;
334 U32 port_id = 0xffffff;
335 int num_targ = 0;
336 int max_bus = ioc->facts.MaxBuses;
337 int max_targ;
338
339 max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;
340
341 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
342 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
343 if (!p0_array)
344 goto out;
345
346 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
347 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
348 if (!pp0_array)
349 goto out;
350
351 do {
352 /* Get FC Device Page 0 header */
353 hdr.PageVersion = 0;
354 hdr.PageLength = 0;
355 hdr.PageNumber = 0;
356 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
357 cfg.cfghdr.hdr = &hdr;
358 cfg.physAddr = -1;
359 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
360 cfg.dir = 0;
361 cfg.pageAddr = port_id;
362 cfg.timeout = 0;
363
364 if ((rc = mpt_config(ioc, &cfg)) != 0)
365 break;
366
367 if (hdr.PageLength <= 0)
368 break;
369
370 data_sz = hdr.PageLength * 4;
371 ppage0_alloc = dma_alloc_coherent(&ioc->pcidev->dev, data_sz,
372 &page0_dma, GFP_KERNEL);
373 rc = -ENOMEM;
374 if (!ppage0_alloc)
375 break;
376
377 cfg.physAddr = page0_dma;
378 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
379
380 if ((rc = mpt_config(ioc, &cfg)) == 0) {
381 ppage0_alloc->PortIdentifier =
382 le32_to_cpu(ppage0_alloc->PortIdentifier);
383
384 ppage0_alloc->WWNN.Low =
385 le32_to_cpu(ppage0_alloc->WWNN.Low);
386
387 ppage0_alloc->WWNN.High =
388 le32_to_cpu(ppage0_alloc->WWNN.High);
389
390 ppage0_alloc->WWPN.Low =
391 le32_to_cpu(ppage0_alloc->WWPN.Low);
392
393 ppage0_alloc->WWPN.High =
394 le32_to_cpu(ppage0_alloc->WWPN.High);
395
396 ppage0_alloc->BBCredit =
397 le16_to_cpu(ppage0_alloc->BBCredit);
398
399 ppage0_alloc->MaxRxFrameSize =
400 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
401
402 port_id = ppage0_alloc->PortIdentifier;
403 num_targ++;
404 *p_p0 = *ppage0_alloc; /* save data */
405 *p_pp0++ = p_p0++; /* save addr */
406 }
407 dma_free_coherent(&ioc->pcidev->dev, data_sz,
408 ppage0_alloc, page0_dma);
409 if (rc != 0)
410 break;
411
412 } while (port_id <= 0xff0000);
413
414 if (num_targ) {
415 /* sort array */
416 if (num_targ > 1)
417 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
418 mptfc_FcDevPage0_cmp_func, NULL);
419 /* call caller's func for each targ */
420 for (ii = 0; ii < num_targ; ii++) {
421 fc = *(pp0_array+ii);
422 func(ioc, ioc_port, fc);
423 }
424 }
425
426 out:
427 kfree(pp0_array);
428 kfree(p0_array);
429 return rc;
430 }
431
432 static int
433 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
434 {
435 /* not currently usable */
436 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
437 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
438 return -1;
439
440 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
441 return -1;
442
443 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
444 return -1;
445
446 /*
447 * board data structure already normalized to platform endianness
448 * shifted to avoid unaligned access on 64 bit architecture
449 */
450 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
451 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
452 rid->port_id = pg0->PortIdentifier;
453 rid->roles = FC_RPORT_ROLE_UNKNOWN;
454
455 return 0;
456 }
457
458 static void
459 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
460 {
461 struct fc_rport_identifiers rport_ids;
462 struct fc_rport *rport;
463 struct mptfc_rport_info *ri;
464 int new_ri = 1;
465 u64 pn, nn;
466 VirtTarget *vtarget;
467 u32 roles = FC_RPORT_ROLE_UNKNOWN;
468
469 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
470 return;
471
472 roles |= FC_RPORT_ROLE_FCP_TARGET;
473 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
474 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
475
476 /* scan list looking for a match */
477 list_for_each_entry(ri, &ioc->fc_rports, list) {
478 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
479 if (pn == rport_ids.port_name) { /* match */
480 list_move_tail(&ri->list, &ioc->fc_rports);
481 new_ri = 0;
482 break;
483 }
484 }
485 if (new_ri) { /* allocate one */
486 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
487 if (!ri)
488 return;
489 list_add_tail(&ri->list, &ioc->fc_rports);
490 }
491
492 ri->pg0 = *pg0; /* add/update pg0 data */
493 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
494
495 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
496 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
497 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
498 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
499 if (rport) {
500 ri->rport = rport;
501 if (new_ri) /* may have been reset by user */
502 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
503 /*
504 * if already mapped, remap here. If not mapped,
505 * target_alloc will allocate vtarget and map,
506 * slave_alloc will fill in vdevice from vtarget.
507 */
508 if (ri->starget) {
509 vtarget = ri->starget->hostdata;
510 if (vtarget) {
511 vtarget->id = pg0->CurrentTargetID;
512 vtarget->channel = pg0->CurrentBus;
513 vtarget->deleted = 0;
514 }
515 }
516 *((struct mptfc_rport_info **)rport->dd_data) = ri;
517 /* scan will be scheduled once rport becomes a target */
518 fc_remote_port_rolechg(rport,roles);
519
520 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
521 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
522 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
523 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
524 "rport tid %d, tmo %d\n",
525 ioc->name,
526 ioc->sh->host_no,
527 pg0->PortIdentifier,
528 (unsigned long long)nn,
529 (unsigned long long)pn,
530 pg0->CurrentTargetID,
531 ri->rport->scsi_target_id,
532 ri->rport->dev_loss_tmo));
533 } else {
534 list_del(&ri->list);
535 kfree(ri);
536 ri = NULL;
537 }
538 }
539 }
540
541 /*
542 * OS entry point to allow for host driver to free allocated memory
543 * Called if no device present or device being unloaded
544 */
545 static void
546 mptfc_target_destroy(struct scsi_target *starget)
547 {
548 struct fc_rport *rport;
549 struct mptfc_rport_info *ri;
550
551 rport = starget_to_rport(starget);
552 if (rport) {
553 ri = *((struct mptfc_rport_info **)rport->dd_data);
554 if (ri) /* better be! */
555 ri->starget = NULL;
556 }
557 kfree(starget->hostdata);
558 starget->hostdata = NULL;
559 }
560
561 /*
562 * OS entry point to allow host driver to alloc memory
563 * for each scsi target. Called once per device the bus scan.
564 * Return non-zero if allocation fails.
565 */
566 static int
567 mptfc_target_alloc(struct scsi_target *starget)
568 {
569 VirtTarget *vtarget;
570 struct fc_rport *rport;
571 struct mptfc_rport_info *ri;
572 int rc;
573
574 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
575 if (!vtarget)
576 return -ENOMEM;
577 starget->hostdata = vtarget;
578
579 rc = -ENODEV;
580 rport = starget_to_rport(starget);
581 if (rport) {
582 ri = *((struct mptfc_rport_info **)rport->dd_data);
583 if (ri) { /* better be! */
584 vtarget->id = ri->pg0.CurrentTargetID;
585 vtarget->channel = ri->pg0.CurrentBus;
586 ri->starget = starget;
587 rc = 0;
588 }
589 }
590 if (rc != 0) {
591 kfree(vtarget);
592 starget->hostdata = NULL;
593 }
594
595 return rc;
596 }
597 /*
598 * mptfc_dump_lun_info
599 * @ioc
600 * @rport
601 * @sdev
602 *
603 */
604 static void
605 mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
606 VirtTarget *vtarget)
607 {
608 u64 nn, pn;
609 struct mptfc_rport_info *ri;
610
611 ri = *((struct mptfc_rport_info **)rport->dd_data);
612 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
613 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
614 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
615 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
616 "CurrentTargetID %d, %x %llx %llx\n",
617 ioc->name,
618 sdev->host->host_no,
619 vtarget->num_luns,
620 sdev->id, ri->pg0.CurrentTargetID,
621 ri->pg0.PortIdentifier,
622 (unsigned long long)pn,
623 (unsigned long long)nn));
624 }
625
626
627 /*
628 * OS entry point to allow host driver to alloc memory
629 * for each scsi device. Called once per device the bus scan.
630 * Return non-zero if allocation fails.
631 * Init memory once per LUN.
632 */
633 static int
634 mptfc_slave_alloc(struct scsi_device *sdev)
635 {
636 MPT_SCSI_HOST *hd;
637 VirtTarget *vtarget;
638 VirtDevice *vdevice;
639 struct scsi_target *starget;
640 struct fc_rport *rport;
641 MPT_ADAPTER *ioc;
642
643 starget = scsi_target(sdev);
644 rport = starget_to_rport(starget);
645
646 if (!rport || fc_remote_port_chkready(rport))
647 return -ENXIO;
648
649 hd = shost_priv(sdev->host);
650 ioc = hd->ioc;
651
652 vdevice = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
653 if (!vdevice) {
654 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
655 ioc->name, sizeof(VirtDevice));
656 return -ENOMEM;
657 }
658
659
660 sdev->hostdata = vdevice;
661 vtarget = starget->hostdata;
662
663 if (vtarget->num_luns == 0) {
664 vtarget->ioc_id = ioc->id;
665 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
666 }
667
668 vdevice->vtarget = vtarget;
669 vdevice->lun = sdev->lun;
670
671 vtarget->num_luns++;
672
673
674 mptfc_dump_lun_info(ioc, rport, sdev, vtarget);
675
676 return 0;
677 }
678
679 static int
680 mptfc_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
681 {
682 struct mptfc_rport_info *ri;
683 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
684 int err;
685 VirtDevice *vdevice = SCpnt->device->hostdata;
686
687 if (!vdevice || !vdevice->vtarget) {
688 SCpnt->result = DID_NO_CONNECT << 16;
689 scsi_done(SCpnt);
690 return 0;
691 }
692
693 err = fc_remote_port_chkready(rport);
694 if (unlikely(err)) {
695 SCpnt->result = err;
696 scsi_done(SCpnt);
697 return 0;
698 }
699
700 /* dd_data is null until finished adding target */
701 ri = *((struct mptfc_rport_info **)rport->dd_data);
702 if (unlikely(!ri)) {
703 SCpnt->result = DID_IMM_RETRY << 16;
704 scsi_done(SCpnt);
705 return 0;
706 }
707
708 return mptscsih_qcmd(SCpnt);
709 }
710
711 /*
712 * mptfc_display_port_link_speed - displaying link speed
713 * @ioc: Pointer to MPT_ADAPTER structure
714 * @portnum: IOC Port number
715 * @pp0dest: port page0 data payload
716 *
717 */
718 static void
719 mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
720 {
721 u8 old_speed, new_speed, state;
722 char *old, *new;
723
724 if (portnum >= 2)
725 return;
726
727 old_speed = ioc->fc_link_speed[portnum];
728 new_speed = pp0dest->CurrentSpeed;
729 state = pp0dest->PortState;
730
731 if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
732 new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UNKNOWN) {
733
734 old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
735 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
736 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
737 "Unknown";
738 new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
739 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
740 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
741 "Unknown";
742 if (old_speed == 0)
743 printk(MYIOC_s_NOTE_FMT
744 "FC Link Established, Speed = %s\n",
745 ioc->name, new);
746 else if (old_speed != new_speed)
747 printk(MYIOC_s_WARN_FMT
748 "FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
749 ioc->name, old, new);
750
751 ioc->fc_link_speed[portnum] = new_speed;
752 }
753 }
754
755 /*
756 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
757 * @ioc: Pointer to MPT_ADAPTER structure
758 * @portnum: IOC Port number
759 *
760 * Return: 0 for success
761 * -ENOMEM if no memory available
762 * -EPERM if not allowed due to ISR context
763 * -EAGAIN if no msg frames currently available
764 * -EFAULT for non-successful reply or no reply (timeout)
765 * -EINVAL portnum arg out of range (hardwired to two elements)
766 */
767 static int
768 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
769 {
770 ConfigPageHeader_t hdr;
771 CONFIGPARMS cfg;
772 FCPortPage0_t *ppage0_alloc;
773 FCPortPage0_t *pp0dest;
774 dma_addr_t page0_dma;
775 int data_sz;
776 int copy_sz;
777 int rc;
778 int count = 400;
779
780 if (portnum > 1)
781 return -EINVAL;
782
783 /* Get FCPort Page 0 header */
784 hdr.PageVersion = 0;
785 hdr.PageLength = 0;
786 hdr.PageNumber = 0;
787 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
788 cfg.cfghdr.hdr = &hdr;
789 cfg.physAddr = -1;
790 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
791 cfg.dir = 0;
792 cfg.pageAddr = portnum;
793 cfg.timeout = 0;
794
795 if ((rc = mpt_config(ioc, &cfg)) != 0)
796 return rc;
797
798 if (hdr.PageLength == 0)
799 return 0;
800
801 data_sz = hdr.PageLength * 4;
802 rc = -ENOMEM;
803 ppage0_alloc = dma_alloc_coherent(&ioc->pcidev->dev, data_sz,
804 &page0_dma, GFP_KERNEL);
805 if (ppage0_alloc) {
806
807 try_again:
808 memset((u8 *)ppage0_alloc, 0, data_sz);
809 cfg.physAddr = page0_dma;
810 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
811
812 if ((rc = mpt_config(ioc, &cfg)) == 0) {
813 /* save the data */
814 pp0dest = &ioc->fc_port_page0[portnum];
815 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
816 memcpy(pp0dest, ppage0_alloc, copy_sz);
817
818 /*
819 * Normalize endianness of structure data,
820 * by byte-swapping all > 1 byte fields!
821 */
822 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
823 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
824 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
825 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
826 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
827 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
828 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
829 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
830 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
831 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
832 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
833 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
834 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
835 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
836 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
837 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
838
839 /*
840 * if still doing discovery,
841 * hang loose a while until finished
842 */
843 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
844 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
845 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
846 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
847 if (count-- > 0) {
848 msleep(100);
849 goto try_again;
850 }
851 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
852 " complete.\n",
853 ioc->name);
854 }
855 mptfc_display_port_link_speed(ioc, portnum, pp0dest);
856 }
857
858 dma_free_coherent(&ioc->pcidev->dev, data_sz, ppage0_alloc,
859 page0_dma);
860 }
861
862 return rc;
863 }
864
865 static int
866 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
867 {
868 ConfigPageHeader_t hdr;
869 CONFIGPARMS cfg;
870 int rc;
871
872 if (portnum > 1)
873 return -EINVAL;
874
875 if (!(ioc->fc_data.fc_port_page1[portnum].data))
876 return -EINVAL;
877
878 /* get fcport page 1 header */
879 hdr.PageVersion = 0;
880 hdr.PageLength = 0;
881 hdr.PageNumber = 1;
882 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
883 cfg.cfghdr.hdr = &hdr;
884 cfg.physAddr = -1;
885 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
886 cfg.dir = 0;
887 cfg.pageAddr = portnum;
888 cfg.timeout = 0;
889
890 if ((rc = mpt_config(ioc, &cfg)) != 0)
891 return rc;
892
893 if (hdr.PageLength == 0)
894 return -ENODEV;
895
896 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
897 return -EINVAL;
898
899 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
900 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
901 cfg.dir = 1;
902
903 rc = mpt_config(ioc, &cfg);
904
905 return rc;
906 }
907
908 static int
909 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
910 {
911 ConfigPageHeader_t hdr;
912 CONFIGPARMS cfg;
913 FCPortPage1_t *page1_alloc;
914 dma_addr_t page1_dma;
915 int data_sz;
916 int rc;
917
918 if (portnum > 1)
919 return -EINVAL;
920
921 /* get fcport page 1 header */
922 hdr.PageVersion = 0;
923 hdr.PageLength = 0;
924 hdr.PageNumber = 1;
925 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
926 cfg.cfghdr.hdr = &hdr;
927 cfg.physAddr = -1;
928 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
929 cfg.dir = 0;
930 cfg.pageAddr = portnum;
931 cfg.timeout = 0;
932
933 if ((rc = mpt_config(ioc, &cfg)) != 0)
934 return rc;
935
936 if (hdr.PageLength == 0)
937 return -ENODEV;
938
939 start_over:
940
941 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
942 data_sz = hdr.PageLength * 4;
943 if (data_sz < sizeof(FCPortPage1_t))
944 data_sz = sizeof(FCPortPage1_t);
945
946 page1_alloc = dma_alloc_coherent(&ioc->pcidev->dev, data_sz,
947 &page1_dma, GFP_KERNEL);
948 if (!page1_alloc)
949 return -ENOMEM;
950 }
951 else {
952 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
953 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
954 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
955 if (hdr.PageLength * 4 > data_sz) {
956 ioc->fc_data.fc_port_page1[portnum].data = NULL;
957 dma_free_coherent(&ioc->pcidev->dev, data_sz,
958 page1_alloc, page1_dma);
959 goto start_over;
960 }
961 }
962
963 cfg.physAddr = page1_dma;
964 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
965
966 if ((rc = mpt_config(ioc, &cfg)) == 0) {
967 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
968 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
969 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
970 }
971 else {
972 ioc->fc_data.fc_port_page1[portnum].data = NULL;
973 dma_free_coherent(&ioc->pcidev->dev, data_sz, page1_alloc,
974 page1_dma);
975 }
976
977 return rc;
978 }
979
980 static void
981 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
982 {
983 int ii;
984 FCPortPage1_t *pp1;
985
986 #define MPTFC_FW_DEVICE_TIMEOUT (1)
987 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
988 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
989 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
990
991 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
992 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
993 continue;
994 pp1 = ioc->fc_data.fc_port_page1[ii].data;
995 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
996 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
997 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
998 && ((pp1->Flags & OFF_FLAGS) == 0))
999 continue;
1000 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
1001 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
1002 pp1->Flags &= ~OFF_FLAGS;
1003 pp1->Flags |= ON_FLAGS;
1004 mptfc_WriteFcPortPage1(ioc, ii);
1005 }
1006 }
1007
1008
1009 static void
1010 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
1011 {
1012 unsigned class = 0;
1013 unsigned cos = 0;
1014 unsigned speed;
1015 unsigned port_type;
1016 unsigned port_state;
1017 FCPortPage0_t *pp0;
1018 struct Scsi_Host *sh;
1019 char *sn;
1020
1021 /* don't know what to do as only one scsi (fc) host was allocated */
1022 if (portnum != 0)
1023 return;
1024
1025 pp0 = &ioc->fc_port_page0[portnum];
1026 sh = ioc->sh;
1027
1028 sn = fc_host_symbolic_name(sh);
1029 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
1030 ioc->prod_name,
1031 MPT_FW_REV_MAGIC_ID_STRING,
1032 ioc->facts.FWVersion.Word);
1033
1034 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
1035
1036 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
1037
1038 fc_host_node_name(sh) =
1039 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1040
1041 fc_host_port_name(sh) =
1042 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1043
1044 fc_host_port_id(sh) = pp0->PortIdentifier;
1045
1046 class = pp0->SupportedServiceClass;
1047 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1048 cos |= FC_COS_CLASS1;
1049 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1050 cos |= FC_COS_CLASS2;
1051 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1052 cos |= FC_COS_CLASS3;
1053 fc_host_supported_classes(sh) = cos;
1054
1055 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1056 speed = FC_PORTSPEED_1GBIT;
1057 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1058 speed = FC_PORTSPEED_2GBIT;
1059 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1060 speed = FC_PORTSPEED_4GBIT;
1061 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1062 speed = FC_PORTSPEED_10GBIT;
1063 else
1064 speed = FC_PORTSPEED_UNKNOWN;
1065 fc_host_speed(sh) = speed;
1066
1067 speed = 0;
1068 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1069 speed |= FC_PORTSPEED_1GBIT;
1070 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1071 speed |= FC_PORTSPEED_2GBIT;
1072 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1073 speed |= FC_PORTSPEED_4GBIT;
1074 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1075 speed |= FC_PORTSPEED_10GBIT;
1076 fc_host_supported_speeds(sh) = speed;
1077
1078 port_state = FC_PORTSTATE_UNKNOWN;
1079 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1080 port_state = FC_PORTSTATE_ONLINE;
1081 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1082 port_state = FC_PORTSTATE_LINKDOWN;
1083 fc_host_port_state(sh) = port_state;
1084
1085 port_type = FC_PORTTYPE_UNKNOWN;
1086 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1087 port_type = FC_PORTTYPE_PTP;
1088 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1089 port_type = FC_PORTTYPE_LPORT;
1090 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1091 port_type = FC_PORTTYPE_NLPORT;
1092 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1093 port_type = FC_PORTTYPE_NPORT;
1094 fc_host_port_type(sh) = port_type;
1095
1096 fc_host_fabric_name(sh) =
1097 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1098 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1099 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1100
1101 }
1102
1103 static void
1104 mptfc_link_status_change(struct work_struct *work)
1105 {
1106 MPT_ADAPTER *ioc =
1107 container_of(work, MPT_ADAPTER, fc_rescan_work);
1108 int ii;
1109
1110 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1111 (void) mptfc_GetFcPortPage0(ioc, ii);
1112
1113 }
1114
1115 static void
1116 mptfc_setup_reset(struct work_struct *work)
1117 {
1118 MPT_ADAPTER *ioc =
1119 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1120 u64 pn;
1121 struct mptfc_rport_info *ri;
1122 struct scsi_target *starget;
1123 VirtTarget *vtarget;
1124
1125 /* reset about to happen, delete (block) all rports */
1126 list_for_each_entry(ri, &ioc->fc_rports, list) {
1127 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1128 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1129 fc_remote_port_delete(ri->rport); /* won't sleep */
1130 ri->rport = NULL;
1131 starget = ri->starget;
1132 if (starget) {
1133 vtarget = starget->hostdata;
1134 if (vtarget)
1135 vtarget->deleted = 1;
1136 }
1137
1138 pn = (u64)ri->pg0.WWPN.High << 32 |
1139 (u64)ri->pg0.WWPN.Low;
1140 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1141 "mptfc_setup_reset.%d: %llx deleted\n",
1142 ioc->name,
1143 ioc->sh->host_no,
1144 (unsigned long long)pn));
1145 }
1146 }
1147 }
1148
1149 static void
1150 mptfc_rescan_devices(struct work_struct *work)
1151 {
1152 MPT_ADAPTER *ioc =
1153 container_of(work, MPT_ADAPTER, fc_rescan_work);
1154 int ii;
1155 u64 pn;
1156 struct mptfc_rport_info *ri;
1157 struct scsi_target *starget;
1158 VirtTarget *vtarget;
1159
1160 /* start by tagging all ports as missing */
1161 list_for_each_entry(ri, &ioc->fc_rports, list) {
1162 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1163 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1164 }
1165 }
1166
1167 /*
1168 * now rescan devices known to adapter,
1169 * will reregister existing rports
1170 */
1171 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1172 (void) mptfc_GetFcPortPage0(ioc, ii);
1173 mptfc_init_host_attr(ioc, ii); /* refresh */
1174 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1175 }
1176
1177 /* delete devices still missing */
1178 list_for_each_entry(ri, &ioc->fc_rports, list) {
1179 /* if newly missing, delete it */
1180 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1181
1182 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1183 MPT_RPORT_INFO_FLAGS_MISSING);
1184 fc_remote_port_delete(ri->rport); /* won't sleep */
1185 ri->rport = NULL;
1186 starget = ri->starget;
1187 if (starget) {
1188 vtarget = starget->hostdata;
1189 if (vtarget)
1190 vtarget->deleted = 1;
1191 }
1192
1193 pn = (u64)ri->pg0.WWPN.High << 32 |
1194 (u64)ri->pg0.WWPN.Low;
1195 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1196 "mptfc_rescan.%d: %llx deleted\n",
1197 ioc->name,
1198 ioc->sh->host_no,
1199 (unsigned long long)pn));
1200 }
1201 }
1202 }
1203
1204 static int
1205 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1206 {
1207 struct Scsi_Host *sh;
1208 MPT_SCSI_HOST *hd;
1209 MPT_ADAPTER *ioc;
1210 unsigned long flags;
1211 int ii;
1212 int numSGE = 0;
1213 int scale;
1214 int ioc_cap;
1215 int error=0;
1216 int r;
1217
1218 if ((r = mpt_attach(pdev,id)) != 0)
1219 return r;
1220
1221 ioc = pci_get_drvdata(pdev);
1222 ioc->DoneCtx = mptfcDoneCtx;
1223 ioc->TaskCtx = mptfcTaskCtx;
1224 ioc->InternalCtx = mptfcInternalCtx;
1225
1226 /* Added sanity check on readiness of the MPT adapter.
1227 */
1228 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1229 printk(MYIOC_s_WARN_FMT
1230 "Skipping because it's not operational!\n",
1231 ioc->name);
1232 error = -ENODEV;
1233 goto out_mptfc_probe;
1234 }
1235
1236 if (!ioc->active) {
1237 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1238 ioc->name);
1239 error = -ENODEV;
1240 goto out_mptfc_probe;
1241 }
1242
1243 /* Sanity check - ensure at least 1 port is INITIATOR capable
1244 */
1245 ioc_cap = 0;
1246 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1247 if (ioc->pfacts[ii].ProtocolFlags &
1248 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1249 ioc_cap ++;
1250 }
1251
1252 if (!ioc_cap) {
1253 printk(MYIOC_s_WARN_FMT
1254 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1255 ioc->name, ioc);
1256 return 0;
1257 }
1258
1259 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1260
1261 if (!sh) {
1262 printk(MYIOC_s_WARN_FMT
1263 "Unable to register controller with SCSI subsystem\n",
1264 ioc->name);
1265 error = -1;
1266 goto out_mptfc_probe;
1267 }
1268
1269 spin_lock_init(&ioc->fc_rescan_work_lock);
1270 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1271 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1272 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1273
1274 spin_lock_irqsave(&ioc->FreeQlock, flags);
1275
1276 /* Attach the SCSI Host to the IOC structure
1277 */
1278 ioc->sh = sh;
1279
1280 sh->io_port = 0;
1281 sh->n_io_port = 0;
1282 sh->irq = 0;
1283
1284 /* set 16 byte cdb's */
1285 sh->max_cmd_len = 16;
1286
1287 sh->max_id = ioc->pfacts->MaxDevices;
1288 sh->max_lun = max_lun;
1289
1290 /* Required entry.
1291 */
1292 sh->unique_id = ioc->id;
1293
1294 /* Verify that we won't exceed the maximum
1295 * number of chain buffers
1296 * We can optimize: ZZ = req_sz/sizeof(SGE)
1297 * For 32bit SGE's:
1298 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1299 * + (req_sz - 64)/sizeof(SGE)
1300 * A slightly different algorithm is required for
1301 * 64bit SGEs.
1302 */
1303 scale = ioc->req_sz/ioc->SGE_size;
1304 if (ioc->sg_addr_size == sizeof(u64)) {
1305 numSGE = (scale - 1) *
1306 (ioc->facts.MaxChainDepth-1) + scale +
1307 (ioc->req_sz - 60) / ioc->SGE_size;
1308 } else {
1309 numSGE = 1 + (scale - 1) *
1310 (ioc->facts.MaxChainDepth-1) + scale +
1311 (ioc->req_sz - 64) / ioc->SGE_size;
1312 }
1313
1314 if (numSGE < sh->sg_tablesize) {
1315 /* Reset this value */
1316 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1317 "Resetting sg_tablesize to %d from %d\n",
1318 ioc->name, numSGE, sh->sg_tablesize));
1319 sh->sg_tablesize = numSGE;
1320 }
1321
1322 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1323
1324 hd = shost_priv(sh);
1325 hd->ioc = ioc;
1326
1327 /* SCSI needs scsi_cmnd lookup table!
1328 * (with size equal to req_depth*PtrSz!)
1329 */
1330 ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_KERNEL);
1331 if (!ioc->ScsiLookup) {
1332 error = -ENOMEM;
1333 goto out_mptfc_probe;
1334 }
1335 spin_lock_init(&ioc->scsi_lookup_lock);
1336
1337 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1338 ioc->name, ioc->ScsiLookup));
1339
1340 hd->last_queue_full = 0;
1341
1342 sh->transportt = mptfc_transport_template;
1343 error = scsi_add_host (sh, &ioc->pcidev->dev);
1344 if(error) {
1345 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1346 "scsi_add_host failed\n", ioc->name));
1347 goto out_mptfc_probe;
1348 }
1349
1350 /* initialize workqueue */
1351
1352 ioc->fc_rescan_work_q = alloc_ordered_workqueue(
1353 "mptfc_wq_%d", WQ_MEM_RECLAIM, sh->host_no);
1354 if (!ioc->fc_rescan_work_q) {
1355 error = -ENOMEM;
1356 goto out_mptfc_host;
1357 }
1358
1359 /*
1360 * Pre-fetch FC port WWN and stuff...
1361 * (FCPortPage0_t stuff)
1362 */
1363 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1364 (void) mptfc_GetFcPortPage0(ioc, ii);
1365 }
1366 mptfc_SetFcPortPage1_defaults(ioc);
1367
1368 /*
1369 * scan for rports -
1370 * by doing it via the workqueue, some locking is eliminated
1371 */
1372
1373 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1374 flush_workqueue(ioc->fc_rescan_work_q);
1375
1376 return 0;
1377
1378 out_mptfc_host:
1379 scsi_remove_host(sh);
1380
1381 out_mptfc_probe:
1382
1383 mptscsih_remove(pdev);
1384 return error;
1385 }
1386
1387 static struct pci_driver mptfc_driver = {
1388 .name = "mptfc",
1389 .id_table = mptfc_pci_table,
1390 .probe = mptfc_probe,
1391 .remove = mptfc_remove,
1392 .shutdown = mptscsih_shutdown,
1393 #ifdef CONFIG_PM
1394 .suspend = mptscsih_suspend,
1395 .resume = mptscsih_resume,
1396 #endif
1397 };
1398
1399 static int
1400 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1401 {
1402 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1403 unsigned long flags;
1404 int rc=1;
1405
1406 if (ioc->bus_type != FC)
1407 return 0;
1408
1409 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1410 ioc->name, event));
1411
1412 if (ioc->sh == NULL || shost_priv(ioc->sh) == NULL)
1413 return 1;
1414
1415 switch (event) {
1416 case MPI_EVENT_RESCAN:
1417 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1418 if (ioc->fc_rescan_work_q) {
1419 queue_work(ioc->fc_rescan_work_q,
1420 &ioc->fc_rescan_work);
1421 }
1422 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1423 break;
1424 case MPI_EVENT_LINK_STATUS_CHANGE:
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_lsc_work);
1429 }
1430 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1431 break;
1432 default:
1433 rc = mptscsih_event_process(ioc,pEvReply);
1434 break;
1435 }
1436 return rc;
1437 }
1438
1439 static int
1440 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1441 {
1442 int rc;
1443 unsigned long flags;
1444
1445 rc = mptscsih_ioc_reset(ioc,reset_phase);
1446 if ((ioc->bus_type != FC) || (!rc))
1447 return rc;
1448
1449
1450 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1451 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1452 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1453 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1454
1455 if (reset_phase == MPT_IOC_SETUP_RESET) {
1456 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1457 if (ioc->fc_rescan_work_q) {
1458 queue_work(ioc->fc_rescan_work_q,
1459 &ioc->fc_setup_reset_work);
1460 }
1461 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1462 }
1463
1464 else if (reset_phase == MPT_IOC_PRE_RESET) {
1465 }
1466
1467 else { /* MPT_IOC_POST_RESET */
1468 mptfc_SetFcPortPage1_defaults(ioc);
1469 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1470 if (ioc->fc_rescan_work_q) {
1471 queue_work(ioc->fc_rescan_work_q,
1472 &ioc->fc_rescan_work);
1473 }
1474 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1475 }
1476 return 1;
1477 }
1478
1479 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1480 /**
1481 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1482 *
1483 * Returns 0 for success, non-zero for failure.
1484 */
1485 static int __init
1486 mptfc_init(void)
1487 {
1488 int error;
1489
1490 show_mptmod_ver(my_NAME, my_VERSION);
1491
1492 /* sanity check module parameters */
1493 if (mptfc_dev_loss_tmo <= 0)
1494 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1495
1496 mptfc_transport_template =
1497 fc_attach_transport(&mptfc_transport_functions);
1498
1499 if (!mptfc_transport_template)
1500 return -ENODEV;
1501
1502 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER,
1503 "mptscsih_scandv_complete");
1504 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER,
1505 "mptscsih_scandv_complete");
1506 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER,
1507 "mptscsih_scandv_complete");
1508
1509 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1510 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1511
1512 error = pci_register_driver(&mptfc_driver);
1513 if (error)
1514 fc_release_transport(mptfc_transport_template);
1515
1516 return error;
1517 }
1518
1519 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1520 /**
1521 * mptfc_remove - Remove fc infrastructure for devices
1522 * @pdev: Pointer to pci_dev structure
1523 *
1524 */
1525 static void mptfc_remove(struct pci_dev *pdev)
1526 {
1527 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1528 struct mptfc_rport_info *p, *n;
1529 struct workqueue_struct *work_q;
1530 unsigned long flags;
1531 int ii;
1532
1533 /* destroy workqueue */
1534 if ((work_q=ioc->fc_rescan_work_q)) {
1535 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1536 ioc->fc_rescan_work_q = NULL;
1537 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1538 destroy_workqueue(work_q);
1539 }
1540
1541 fc_remove_host(ioc->sh);
1542
1543 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1544 list_del(&p->list);
1545 kfree(p);
1546 }
1547
1548 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1549 if (ioc->fc_data.fc_port_page1[ii].data) {
1550 dma_free_coherent(&ioc->pcidev->dev,
1551 ioc->fc_data.fc_port_page1[ii].pg_sz,
1552 ioc->fc_data.fc_port_page1[ii].data,
1553 ioc->fc_data.fc_port_page1[ii].dma);
1554 ioc->fc_data.fc_port_page1[ii].data = NULL;
1555 }
1556 }
1557
1558 scsi_remove_host(ioc->sh);
1559
1560 mptscsih_remove(pdev);
1561 }
1562
1563 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1564 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1565 /**
1566 * mptfc_exit - Unregisters MPT adapter(s)
1567 *
1568 */
1569 static void __exit
1570 mptfc_exit(void)
1571 {
1572 pci_unregister_driver(&mptfc_driver);
1573 fc_release_transport(mptfc_transport_template);
1574
1575 mpt_reset_deregister(mptfcDoneCtx);
1576 mpt_event_deregister(mptfcDoneCtx);
1577
1578 mpt_deregister(mptfcInternalCtx);
1579 mpt_deregister(mptfcTaskCtx);
1580 mpt_deregister(mptfcDoneCtx);
1581 }
1582
1583 module_init(mptfc_init);
1584 module_exit(mptfc_exit);
Kernel DRM miscellaneous fixes and cross-tree changes