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 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
mptfc_block_error_handler(struct scsi_cmnd * SCpnt,int (* func)(struct scsi_cmnd * SCpnt),const char * caller)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
mptfc_abort(struct scsi_cmnd * SCpnt)235 mptfc_abort(struct scsi_cmnd *SCpnt)
236 {
237 return
238 mptfc_block_error_handler(SCpnt, mptscsih_abort, __func__);
239 }
240
241 static int
mptfc_dev_reset(struct scsi_cmnd * SCpnt)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
mptfc_bus_reset(struct scsi_cmnd * SCpnt)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
mptfc_set_rport_loss_tmo(struct fc_rport * rport,uint32_t timeout)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
mptfc_FcDevPage0_cmp_func(const void * a,const void * b)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
mptfc_GetFcDevPage0(MPT_ADAPTER * ioc,int ioc_port,void (* func)(MPT_ADAPTER * ioc,int channel,FCDevicePage0_t * arg))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
mptfc_generate_rport_ids(FCDevicePage0_t * pg0,struct fc_rport_identifiers * rid)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
mptfc_register_dev(MPT_ADAPTER * ioc,int channel,FCDevicePage0_t * pg0)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
mptfc_target_destroy(struct scsi_target * starget)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
mptfc_target_alloc(struct scsi_target * starget)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
mptfc_dump_lun_info(MPT_ADAPTER * ioc,struct fc_rport * rport,struct scsi_device * sdev,VirtTarget * vtarget)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
mptfc_slave_alloc(struct scsi_device * sdev)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
mptfc_qcmd(struct Scsi_Host * shost,struct scsi_cmnd * SCpnt)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
mptfc_display_port_link_speed(MPT_ADAPTER * ioc,int portnum,FCPortPage0_t * pp0dest)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
mptfc_GetFcPortPage0(MPT_ADAPTER * ioc,int portnum)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 = 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
mptfc_WriteFcPortPage1(MPT_ADAPTER * ioc,int portnum)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
mptfc_GetFcPortPage1(MPT_ADAPTER * ioc,int portnum)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 = 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 cfg.physAddr = page1_dma;
926 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
927
928 if ((rc = mpt_config(ioc, &cfg)) == 0) {
929 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
930 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
931 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
932 }
933 else {
934 ioc->fc_data.fc_port_page1[portnum].data = NULL;
935 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
936 page1_alloc, page1_dma);
937 }
938
939 return rc;
940 }
941
942 static void
mptfc_SetFcPortPage1_defaults(MPT_ADAPTER * ioc)943 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
944 {
945 int ii;
946 FCPortPage1_t *pp1;
947
948 #define MPTFC_FW_DEVICE_TIMEOUT (1)
949 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
950 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
951 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
952
953 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
954 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
955 continue;
956 pp1 = ioc->fc_data.fc_port_page1[ii].data;
957 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
958 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
959 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
960 && ((pp1->Flags & OFF_FLAGS) == 0))
961 continue;
962 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
963 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
964 pp1->Flags &= ~OFF_FLAGS;
965 pp1->Flags |= ON_FLAGS;
966 mptfc_WriteFcPortPage1(ioc, ii);
967 }
968 }
969
970
971 static void
mptfc_init_host_attr(MPT_ADAPTER * ioc,int portnum)972 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
973 {
974 unsigned class = 0;
975 unsigned cos = 0;
976 unsigned speed;
977 unsigned port_type;
978 unsigned port_state;
979 FCPortPage0_t *pp0;
980 struct Scsi_Host *sh;
981 char *sn;
982
983 /* don't know what to do as only one scsi (fc) host was allocated */
984 if (portnum != 0)
985 return;
986
987 pp0 = &ioc->fc_port_page0[portnum];
988 sh = ioc->sh;
989
990 sn = fc_host_symbolic_name(sh);
991 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
992 ioc->prod_name,
993 MPT_FW_REV_MAGIC_ID_STRING,
994 ioc->facts.FWVersion.Word);
995
996 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
997
998 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
999
1000 fc_host_node_name(sh) =
1001 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1002
1003 fc_host_port_name(sh) =
1004 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1005
1006 fc_host_port_id(sh) = pp0->PortIdentifier;
1007
1008 class = pp0->SupportedServiceClass;
1009 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1010 cos |= FC_COS_CLASS1;
1011 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1012 cos |= FC_COS_CLASS2;
1013 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1014 cos |= FC_COS_CLASS3;
1015 fc_host_supported_classes(sh) = cos;
1016
1017 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1018 speed = FC_PORTSPEED_1GBIT;
1019 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1020 speed = FC_PORTSPEED_2GBIT;
1021 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1022 speed = FC_PORTSPEED_4GBIT;
1023 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1024 speed = FC_PORTSPEED_10GBIT;
1025 else
1026 speed = FC_PORTSPEED_UNKNOWN;
1027 fc_host_speed(sh) = speed;
1028
1029 speed = 0;
1030 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1031 speed |= FC_PORTSPEED_1GBIT;
1032 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1033 speed |= FC_PORTSPEED_2GBIT;
1034 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1035 speed |= FC_PORTSPEED_4GBIT;
1036 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1037 speed |= FC_PORTSPEED_10GBIT;
1038 fc_host_supported_speeds(sh) = speed;
1039
1040 port_state = FC_PORTSTATE_UNKNOWN;
1041 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1042 port_state = FC_PORTSTATE_ONLINE;
1043 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1044 port_state = FC_PORTSTATE_LINKDOWN;
1045 fc_host_port_state(sh) = port_state;
1046
1047 port_type = FC_PORTTYPE_UNKNOWN;
1048 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1049 port_type = FC_PORTTYPE_PTP;
1050 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1051 port_type = FC_PORTTYPE_LPORT;
1052 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1053 port_type = FC_PORTTYPE_NLPORT;
1054 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1055 port_type = FC_PORTTYPE_NPORT;
1056 fc_host_port_type(sh) = port_type;
1057
1058 fc_host_fabric_name(sh) =
1059 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1060 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1061 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1062
1063 }
1064
1065 static void
mptfc_link_status_change(struct work_struct * work)1066 mptfc_link_status_change(struct work_struct *work)
1067 {
1068 MPT_ADAPTER *ioc =
1069 container_of(work, MPT_ADAPTER, fc_rescan_work);
1070 int ii;
1071
1072 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1073 (void) mptfc_GetFcPortPage0(ioc, ii);
1074
1075 }
1076
1077 static void
mptfc_setup_reset(struct work_struct * work)1078 mptfc_setup_reset(struct work_struct *work)
1079 {
1080 MPT_ADAPTER *ioc =
1081 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1082 u64 pn;
1083 struct mptfc_rport_info *ri;
1084 struct scsi_target *starget;
1085 VirtTarget *vtarget;
1086
1087 /* reset about to happen, delete (block) all rports */
1088 list_for_each_entry(ri, &ioc->fc_rports, list) {
1089 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1090 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1091 fc_remote_port_delete(ri->rport); /* won't sleep */
1092 ri->rport = NULL;
1093 starget = ri->starget;
1094 if (starget) {
1095 vtarget = starget->hostdata;
1096 if (vtarget)
1097 vtarget->deleted = 1;
1098 }
1099
1100 pn = (u64)ri->pg0.WWPN.High << 32 |
1101 (u64)ri->pg0.WWPN.Low;
1102 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1103 "mptfc_setup_reset.%d: %llx deleted\n",
1104 ioc->name,
1105 ioc->sh->host_no,
1106 (unsigned long long)pn));
1107 }
1108 }
1109 }
1110
1111 static void
mptfc_rescan_devices(struct work_struct * work)1112 mptfc_rescan_devices(struct work_struct *work)
1113 {
1114 MPT_ADAPTER *ioc =
1115 container_of(work, MPT_ADAPTER, fc_rescan_work);
1116 int ii;
1117 u64 pn;
1118 struct mptfc_rport_info *ri;
1119 struct scsi_target *starget;
1120 VirtTarget *vtarget;
1121
1122 /* start by tagging all ports as missing */
1123 list_for_each_entry(ri, &ioc->fc_rports, list) {
1124 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1125 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1126 }
1127 }
1128
1129 /*
1130 * now rescan devices known to adapter,
1131 * will reregister existing rports
1132 */
1133 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1134 (void) mptfc_GetFcPortPage0(ioc, ii);
1135 mptfc_init_host_attr(ioc, ii); /* refresh */
1136 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1137 }
1138
1139 /* delete devices still missing */
1140 list_for_each_entry(ri, &ioc->fc_rports, list) {
1141 /* if newly missing, delete it */
1142 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1143
1144 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1145 MPT_RPORT_INFO_FLAGS_MISSING);
1146 fc_remote_port_delete(ri->rport); /* won't sleep */
1147 ri->rport = NULL;
1148 starget = ri->starget;
1149 if (starget) {
1150 vtarget = starget->hostdata;
1151 if (vtarget)
1152 vtarget->deleted = 1;
1153 }
1154
1155 pn = (u64)ri->pg0.WWPN.High << 32 |
1156 (u64)ri->pg0.WWPN.Low;
1157 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1158 "mptfc_rescan.%d: %llx deleted\n",
1159 ioc->name,
1160 ioc->sh->host_no,
1161 (unsigned long long)pn));
1162 }
1163 }
1164 }
1165
1166 static int
mptfc_probe(struct pci_dev * pdev,const struct pci_device_id * id)1167 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1168 {
1169 struct Scsi_Host *sh;
1170 MPT_SCSI_HOST *hd;
1171 MPT_ADAPTER *ioc;
1172 unsigned long flags;
1173 int ii;
1174 int numSGE = 0;
1175 int scale;
1176 int ioc_cap;
1177 int error=0;
1178 int r;
1179
1180 if ((r = mpt_attach(pdev,id)) != 0)
1181 return r;
1182
1183 ioc = pci_get_drvdata(pdev);
1184 ioc->DoneCtx = mptfcDoneCtx;
1185 ioc->TaskCtx = mptfcTaskCtx;
1186 ioc->InternalCtx = mptfcInternalCtx;
1187
1188 /* Added sanity check on readiness of the MPT adapter.
1189 */
1190 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1191 printk(MYIOC_s_WARN_FMT
1192 "Skipping because it's not operational!\n",
1193 ioc->name);
1194 error = -ENODEV;
1195 goto out_mptfc_probe;
1196 }
1197
1198 if (!ioc->active) {
1199 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1200 ioc->name);
1201 error = -ENODEV;
1202 goto out_mptfc_probe;
1203 }
1204
1205 /* Sanity check - ensure at least 1 port is INITIATOR capable
1206 */
1207 ioc_cap = 0;
1208 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1209 if (ioc->pfacts[ii].ProtocolFlags &
1210 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1211 ioc_cap ++;
1212 }
1213
1214 if (!ioc_cap) {
1215 printk(MYIOC_s_WARN_FMT
1216 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1217 ioc->name, ioc);
1218 return 0;
1219 }
1220
1221 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1222
1223 if (!sh) {
1224 printk(MYIOC_s_WARN_FMT
1225 "Unable to register controller with SCSI subsystem\n",
1226 ioc->name);
1227 error = -1;
1228 goto out_mptfc_probe;
1229 }
1230
1231 spin_lock_init(&ioc->fc_rescan_work_lock);
1232 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1233 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1234 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1235
1236 spin_lock_irqsave(&ioc->FreeQlock, flags);
1237
1238 /* Attach the SCSI Host to the IOC structure
1239 */
1240 ioc->sh = sh;
1241
1242 sh->io_port = 0;
1243 sh->n_io_port = 0;
1244 sh->irq = 0;
1245
1246 /* set 16 byte cdb's */
1247 sh->max_cmd_len = 16;
1248
1249 sh->max_id = ioc->pfacts->MaxDevices;
1250 sh->max_lun = max_lun;
1251
1252 /* Required entry.
1253 */
1254 sh->unique_id = ioc->id;
1255
1256 /* Verify that we won't exceed the maximum
1257 * number of chain buffers
1258 * We can optimize: ZZ = req_sz/sizeof(SGE)
1259 * For 32bit SGE's:
1260 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1261 * + (req_sz - 64)/sizeof(SGE)
1262 * A slightly different algorithm is required for
1263 * 64bit SGEs.
1264 */
1265 scale = ioc->req_sz/ioc->SGE_size;
1266 if (ioc->sg_addr_size == sizeof(u64)) {
1267 numSGE = (scale - 1) *
1268 (ioc->facts.MaxChainDepth-1) + scale +
1269 (ioc->req_sz - 60) / ioc->SGE_size;
1270 } else {
1271 numSGE = 1 + (scale - 1) *
1272 (ioc->facts.MaxChainDepth-1) + scale +
1273 (ioc->req_sz - 64) / ioc->SGE_size;
1274 }
1275
1276 if (numSGE < sh->sg_tablesize) {
1277 /* Reset this value */
1278 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1279 "Resetting sg_tablesize to %d from %d\n",
1280 ioc->name, numSGE, sh->sg_tablesize));
1281 sh->sg_tablesize = numSGE;
1282 }
1283
1284 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1285
1286 hd = shost_priv(sh);
1287 hd->ioc = ioc;
1288
1289 /* SCSI needs scsi_cmnd lookup table!
1290 * (with size equal to req_depth*PtrSz!)
1291 */
1292 ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_KERNEL);
1293 if (!ioc->ScsiLookup) {
1294 error = -ENOMEM;
1295 goto out_mptfc_probe;
1296 }
1297 spin_lock_init(&ioc->scsi_lookup_lock);
1298
1299 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1300 ioc->name, ioc->ScsiLookup));
1301
1302 hd->last_queue_full = 0;
1303
1304 sh->transportt = mptfc_transport_template;
1305 error = scsi_add_host (sh, &ioc->pcidev->dev);
1306 if(error) {
1307 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1308 "scsi_add_host failed\n", ioc->name));
1309 goto out_mptfc_probe;
1310 }
1311
1312 /* initialize workqueue */
1313
1314 snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
1315 "mptfc_wq_%d", sh->host_no);
1316 ioc->fc_rescan_work_q =
1317 alloc_ordered_workqueue(ioc->fc_rescan_work_q_name,
1318 WQ_MEM_RECLAIM);
1319 if (!ioc->fc_rescan_work_q) {
1320 error = -ENOMEM;
1321 goto out_mptfc_host;
1322 }
1323
1324 /*
1325 * Pre-fetch FC port WWN and stuff...
1326 * (FCPortPage0_t stuff)
1327 */
1328 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1329 (void) mptfc_GetFcPortPage0(ioc, ii);
1330 }
1331 mptfc_SetFcPortPage1_defaults(ioc);
1332
1333 /*
1334 * scan for rports -
1335 * by doing it via the workqueue, some locking is eliminated
1336 */
1337
1338 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1339 flush_workqueue(ioc->fc_rescan_work_q);
1340
1341 return 0;
1342
1343 out_mptfc_host:
1344 scsi_remove_host(sh);
1345
1346 out_mptfc_probe:
1347
1348 mptscsih_remove(pdev);
1349 return error;
1350 }
1351
1352 static struct pci_driver mptfc_driver = {
1353 .name = "mptfc",
1354 .id_table = mptfc_pci_table,
1355 .probe = mptfc_probe,
1356 .remove = mptfc_remove,
1357 .shutdown = mptscsih_shutdown,
1358 #ifdef CONFIG_PM
1359 .suspend = mptscsih_suspend,
1360 .resume = mptscsih_resume,
1361 #endif
1362 };
1363
1364 static int
mptfc_event_process(MPT_ADAPTER * ioc,EventNotificationReply_t * pEvReply)1365 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1366 {
1367 MPT_SCSI_HOST *hd;
1368 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1369 unsigned long flags;
1370 int rc=1;
1371
1372 if (ioc->bus_type != FC)
1373 return 0;
1374
1375 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1376 ioc->name, event));
1377
1378 if (ioc->sh == NULL ||
1379 ((hd = shost_priv(ioc->sh)) == NULL))
1380 return 1;
1381
1382 switch (event) {
1383 case MPI_EVENT_RESCAN:
1384 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1385 if (ioc->fc_rescan_work_q) {
1386 queue_work(ioc->fc_rescan_work_q,
1387 &ioc->fc_rescan_work);
1388 }
1389 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1390 break;
1391 case MPI_EVENT_LINK_STATUS_CHANGE:
1392 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1393 if (ioc->fc_rescan_work_q) {
1394 queue_work(ioc->fc_rescan_work_q,
1395 &ioc->fc_lsc_work);
1396 }
1397 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1398 break;
1399 default:
1400 rc = mptscsih_event_process(ioc,pEvReply);
1401 break;
1402 }
1403 return rc;
1404 }
1405
1406 static int
mptfc_ioc_reset(MPT_ADAPTER * ioc,int reset_phase)1407 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1408 {
1409 int rc;
1410 unsigned long flags;
1411
1412 rc = mptscsih_ioc_reset(ioc,reset_phase);
1413 if ((ioc->bus_type != FC) || (!rc))
1414 return rc;
1415
1416
1417 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1418 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1419 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1420 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1421
1422 if (reset_phase == MPT_IOC_SETUP_RESET) {
1423 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1424 if (ioc->fc_rescan_work_q) {
1425 queue_work(ioc->fc_rescan_work_q,
1426 &ioc->fc_setup_reset_work);
1427 }
1428 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1429 }
1430
1431 else if (reset_phase == MPT_IOC_PRE_RESET) {
1432 }
1433
1434 else { /* MPT_IOC_POST_RESET */
1435 mptfc_SetFcPortPage1_defaults(ioc);
1436 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1437 if (ioc->fc_rescan_work_q) {
1438 queue_work(ioc->fc_rescan_work_q,
1439 &ioc->fc_rescan_work);
1440 }
1441 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1442 }
1443 return 1;
1444 }
1445
1446 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1447 /**
1448 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1449 *
1450 * Returns 0 for success, non-zero for failure.
1451 */
1452 static int __init
mptfc_init(void)1453 mptfc_init(void)
1454 {
1455 int error;
1456
1457 show_mptmod_ver(my_NAME, my_VERSION);
1458
1459 /* sanity check module parameters */
1460 if (mptfc_dev_loss_tmo <= 0)
1461 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1462
1463 mptfc_transport_template =
1464 fc_attach_transport(&mptfc_transport_functions);
1465
1466 if (!mptfc_transport_template)
1467 return -ENODEV;
1468
1469 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER,
1470 "mptscsih_scandv_complete");
1471 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER,
1472 "mptscsih_scandv_complete");
1473 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER,
1474 "mptscsih_scandv_complete");
1475
1476 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1477 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1478
1479 error = pci_register_driver(&mptfc_driver);
1480 if (error)
1481 fc_release_transport(mptfc_transport_template);
1482
1483 return error;
1484 }
1485
1486 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1487 /**
1488 * mptfc_remove - Remove fc infrastructure for devices
1489 * @pdev: Pointer to pci_dev structure
1490 *
1491 */
mptfc_remove(struct pci_dev * pdev)1492 static void mptfc_remove(struct pci_dev *pdev)
1493 {
1494 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1495 struct mptfc_rport_info *p, *n;
1496 struct workqueue_struct *work_q;
1497 unsigned long flags;
1498 int ii;
1499
1500 /* destroy workqueue */
1501 if ((work_q=ioc->fc_rescan_work_q)) {
1502 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1503 ioc->fc_rescan_work_q = NULL;
1504 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1505 destroy_workqueue(work_q);
1506 }
1507
1508 fc_remove_host(ioc->sh);
1509
1510 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1511 list_del(&p->list);
1512 kfree(p);
1513 }
1514
1515 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1516 if (ioc->fc_data.fc_port_page1[ii].data) {
1517 pci_free_consistent(ioc->pcidev,
1518 ioc->fc_data.fc_port_page1[ii].pg_sz,
1519 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1520 ioc->fc_data.fc_port_page1[ii].dma);
1521 ioc->fc_data.fc_port_page1[ii].data = NULL;
1522 }
1523 }
1524
1525 scsi_remove_host(ioc->sh);
1526
1527 mptscsih_remove(pdev);
1528 }
1529
1530 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1531 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1532 /**
1533 * mptfc_exit - Unregisters MPT adapter(s)
1534 *
1535 */
1536 static void __exit
mptfc_exit(void)1537 mptfc_exit(void)
1538 {
1539 pci_unregister_driver(&mptfc_driver);
1540 fc_release_transport(mptfc_transport_template);
1541
1542 mpt_reset_deregister(mptfcDoneCtx);
1543 mpt_event_deregister(mptfcDoneCtx);
1544
1545 mpt_deregister(mptfcInternalCtx);
1546 mpt_deregister(mptfcTaskCtx);
1547 mpt_deregister(mptfcDoneCtx);
1548 }
1549
1550 module_init(mptfc_init);
1551 module_exit(mptfc_exit);
1552