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nilfs2: use mnt_want_write in ioctls where write access is needed
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / message / fusion / mptfc.c
blobebf6ae024da427c9dfe21d1dea70366063a02ec5
1 /*
2 * linux/drivers/message/fusion/mptfc.c
3 * For use with LSI PCI chip/adapter(s)
4 * running LSI Fusion MPT (Message Passing Technology) firmware.
5 *
6 * Copyright (c) 1999-2008 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 */
10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
11 /*
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; version 2 of the License.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 NO WARRANTY
22 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
23 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
24 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
25 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
26 solely responsible for determining the appropriateness of using and
27 distributing the Program and assumes all risks associated with its
28 exercise of rights under this Agreement, including but not limited to
29 the risks and costs of program errors, damage to or loss of data,
30 programs or equipment, and unavailability or interruption of operations.
31
32 DISCLAIMER OF LIABILITY
33 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
34 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
36 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
37 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
39 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
40
41 You should have received a copy of the GNU General Public License
42 along with this program; if not, write to the Free Software
43 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
44 */
45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
46 #include <linux/module.h>
47 #include <linux/kernel.h>
48 #include <linux/init.h>
49 #include <linux/errno.h>
50 #include <linux/kdev_t.h>
51 #include <linux/blkdev.h>
52 #include <linux/delay.h> /* for mdelay */
53 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
54 #include <linux/reboot.h> /* notifier code */
55 #include <linux/workqueue.h>
56 #include <linux/sort.h>
57
58 #include <scsi/scsi.h>
59 #include <scsi/scsi_cmnd.h>
60 #include <scsi/scsi_device.h>
61 #include <scsi/scsi_host.h>
62 #include <scsi/scsi_tcq.h>
63 #include <scsi/scsi_transport_fc.h>
64
65 #include "mptbase.h"
66 #include "mptscsih.h"
67
68 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
69 #define my_NAME "Fusion MPT FC Host driver"
70 #define my_VERSION MPT_LINUX_VERSION_COMMON
71 #define MYNAM "mptfc"
72
73 MODULE_AUTHOR(MODULEAUTHOR);
74 MODULE_DESCRIPTION(my_NAME);
75 MODULE_LICENSE("GPL");
76 MODULE_VERSION(my_VERSION);
77
78 /* Command line args */
79 #define MPTFC_DEV_LOSS_TMO (60)
80 static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO; /* reasonable default */
81 module_param(mptfc_dev_loss_tmo, int, 0);
82 MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
83 " transport to wait for an rport to "
84 " return following a device loss event."
85 " Default=60.");
86
87 /* scsi-mid layer global parmeter is max_report_luns, which is 511 */
88 #define MPTFC_MAX_LUN (16895)
89 static int max_lun = MPTFC_MAX_LUN;
90 module_param(max_lun, int, 0);
91 MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
92
93 static u8 mptfcDoneCtx = MPT_MAX_PROTOCOL_DRIVERS;
94 static u8 mptfcTaskCtx = MPT_MAX_PROTOCOL_DRIVERS;
95 static u8 mptfcInternalCtx = MPT_MAX_PROTOCOL_DRIVERS;
96
97 static int mptfc_target_alloc(struct scsi_target *starget);
98 static int mptfc_slave_alloc(struct scsi_device *sdev);
99 static int mptfc_qcmd(struct scsi_cmnd *SCpnt,
100 void (*done)(struct scsi_cmnd *));
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 __devexit mptfc_remove(struct pci_dev *pdev);
104 static int mptfc_abort(struct scsi_cmnd *SCpnt);
105 static int mptfc_dev_reset(struct scsi_cmnd *SCpnt);
106 static int mptfc_bus_reset(struct scsi_cmnd *SCpnt);
107 static int mptfc_host_reset(struct scsi_cmnd *SCpnt);
108
109 static struct scsi_host_template mptfc_driver_template = {
110 .module = THIS_MODULE,
111 .proc_name = "mptfc",
112 .proc_info = mptscsih_proc_info,
113 .name = "MPT FC Host",
114 .info = mptscsih_info,
115 .queuecommand = mptfc_qcmd,
116 .target_alloc = mptfc_target_alloc,
117 .slave_alloc = mptfc_slave_alloc,
118 .slave_configure = mptscsih_slave_configure,
119 .target_destroy = mptfc_target_destroy,
120 .slave_destroy = mptscsih_slave_destroy,
121 .change_queue_depth = mptscsih_change_queue_depth,
122 .eh_abort_handler = mptfc_abort,
123 .eh_device_reset_handler = mptfc_dev_reset,
124 .eh_bus_reset_handler = mptfc_bus_reset,
125 .eh_host_reset_handler = mptfc_host_reset,
126 .bios_param = mptscsih_bios_param,
127 .can_queue = MPT_FC_CAN_QUEUE,
128 .this_id = -1,
129 .sg_tablesize = MPT_SCSI_SG_DEPTH,
130 .max_sectors = 8192,
131 .cmd_per_lun = 7,
132 .use_clustering = ENABLE_CLUSTERING,
133 .shost_attrs = mptscsih_host_attrs,
134 };
135
136 /****************************************************************************
137 * Supported hardware
138 */
139
140 static struct pci_device_id mptfc_pci_table[] = {
141 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC909,
142 PCI_ANY_ID, PCI_ANY_ID },
143 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919,
144 PCI_ANY_ID, PCI_ANY_ID },
145 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929,
146 PCI_ANY_ID, PCI_ANY_ID },
147 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC919X,
148 PCI_ANY_ID, PCI_ANY_ID },
149 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC929X,
150 PCI_ANY_ID, PCI_ANY_ID },
151 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC939X,
152 PCI_ANY_ID, PCI_ANY_ID },
153 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949X,
154 PCI_ANY_ID, PCI_ANY_ID },
155 { PCI_VENDOR_ID_LSI_LOGIC, MPI_MANUFACTPAGE_DEVICEID_FC949E,
156 PCI_ANY_ID, PCI_ANY_ID },
157 { PCI_VENDOR_ID_BROCADE, MPI_MANUFACTPAGE_DEVICEID_FC949E,
158 PCI_ANY_ID, PCI_ANY_ID },
159 {0} /* Terminating entry */
160 };
161 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
162
163 static struct scsi_transport_template *mptfc_transport_template = NULL;
164
165 static struct fc_function_template mptfc_transport_functions = {
166 .dd_fcrport_size = 8,
167 .show_host_node_name = 1,
168 .show_host_port_name = 1,
169 .show_host_supported_classes = 1,
170 .show_host_port_id = 1,
171 .show_rport_supported_classes = 1,
172 .show_starget_node_name = 1,
173 .show_starget_port_name = 1,
174 .show_starget_port_id = 1,
175 .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
176 .show_rport_dev_loss_tmo = 1,
177 .show_host_supported_speeds = 1,
178 .show_host_maxframe_size = 1,
179 .show_host_speed = 1,
180 .show_host_fabric_name = 1,
181 .show_host_port_type = 1,
182 .show_host_port_state = 1,
183 .show_host_symbolic_name = 1,
184 };
185
186 static int
187 mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
188 int (*func)(struct scsi_cmnd *SCpnt),
189 const char *caller)
190 {
191 MPT_SCSI_HOST *hd;
192 struct scsi_device *sdev = SCpnt->device;
193 struct Scsi_Host *shost = sdev->host;
194 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
195 unsigned long flags;
196 int ready;
197 MPT_ADAPTER *ioc;
198
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 spin_unlock_irqrestore(shost->host_lock, flags);
204 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
205 "mptfc_block_error_handler.%d: %d:%d, port status is "
206 "DID_IMM_RETRY, deferring %s recovery.\n",
207 ioc->name, ioc->sh->host_no,
208 SCpnt->device->id, SCpnt->device->lun, caller));
209 msleep(1000);
210 spin_lock_irqsave(shost->host_lock, flags);
211 }
212 spin_unlock_irqrestore(shost->host_lock, flags);
213
214 if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata) {
215 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
216 "%s.%d: %d:%d, failing recovery, "
217 "port state %d, vdevice %p.\n", caller,
218 ioc->name, ioc->sh->host_no,
219 SCpnt->device->id, SCpnt->device->lun, ready,
220 SCpnt->device->hostdata));
221 return FAILED;
222 }
223 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
224 "%s.%d: %d:%d, executing recovery.\n", caller,
225 ioc->name, ioc->sh->host_no,
226 SCpnt->device->id, SCpnt->device->lun));
227 return (*func)(SCpnt);
228 }
229
230 static int
231 mptfc_abort(struct scsi_cmnd *SCpnt)
232 {
233 return
234 mptfc_block_error_handler(SCpnt, mptscsih_abort, __func__);
235 }
236
237 static int
238 mptfc_dev_reset(struct scsi_cmnd *SCpnt)
239 {
240 return
241 mptfc_block_error_handler(SCpnt, mptscsih_dev_reset, __func__);
242 }
243
244 static int
245 mptfc_bus_reset(struct scsi_cmnd *SCpnt)
246 {
247 return
248 mptfc_block_error_handler(SCpnt, mptscsih_bus_reset, __func__);
249 }
250
251 static int
252 mptfc_host_reset(struct scsi_cmnd *SCpnt)
253 {
254 return
255 mptfc_block_error_handler(SCpnt, mptscsih_host_reset, __func__);
256 }
257
258 static void
259 mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
260 {
261 if (timeout > 0)
262 rport->dev_loss_tmo = timeout;
263 else
264 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
265 }
266
267 static int
268 mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
269 {
270 FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
271 FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
272
273 if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
274 if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
275 return 0;
276 if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
277 return -1;
278 return 1;
279 }
280 if ((*aa)->CurrentBus < (*bb)->CurrentBus)
281 return -1;
282 return 1;
283 }
284
285 static int
286 mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
287 void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
288 {
289 ConfigPageHeader_t hdr;
290 CONFIGPARMS cfg;
291 FCDevicePage0_t *ppage0_alloc, *fc;
292 dma_addr_t page0_dma;
293 int data_sz;
294 int ii;
295
296 FCDevicePage0_t *p0_array=NULL, *p_p0;
297 FCDevicePage0_t **pp0_array=NULL, **p_pp0;
298
299 int rc = -ENOMEM;
300 U32 port_id = 0xffffff;
301 int num_targ = 0;
302 int max_bus = ioc->facts.MaxBuses;
303 int max_targ;
304
305 max_targ = (ioc->facts.MaxDevices == 0) ? 256 : ioc->facts.MaxDevices;
306
307 data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
308 p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
309 if (!p0_array)
310 goto out;
311
312 data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
313 p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
314 if (!pp0_array)
315 goto out;
316
317 do {
318 /* Get FC Device Page 0 header */
319 hdr.PageVersion = 0;
320 hdr.PageLength = 0;
321 hdr.PageNumber = 0;
322 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
323 cfg.cfghdr.hdr = &hdr;
324 cfg.physAddr = -1;
325 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
326 cfg.dir = 0;
327 cfg.pageAddr = port_id;
328 cfg.timeout = 0;
329
330 if ((rc = mpt_config(ioc, &cfg)) != 0)
331 break;
332
333 if (hdr.PageLength <= 0)
334 break;
335
336 data_sz = hdr.PageLength * 4;
337 ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
338 &page0_dma);
339 rc = -ENOMEM;
340 if (!ppage0_alloc)
341 break;
342
343 cfg.physAddr = page0_dma;
344 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
345
346 if ((rc = mpt_config(ioc, &cfg)) == 0) {
347 ppage0_alloc->PortIdentifier =
348 le32_to_cpu(ppage0_alloc->PortIdentifier);
349
350 ppage0_alloc->WWNN.Low =
351 le32_to_cpu(ppage0_alloc->WWNN.Low);
352
353 ppage0_alloc->WWNN.High =
354 le32_to_cpu(ppage0_alloc->WWNN.High);
355
356 ppage0_alloc->WWPN.Low =
357 le32_to_cpu(ppage0_alloc->WWPN.Low);
358
359 ppage0_alloc->WWPN.High =
360 le32_to_cpu(ppage0_alloc->WWPN.High);
361
362 ppage0_alloc->BBCredit =
363 le16_to_cpu(ppage0_alloc->BBCredit);
364
365 ppage0_alloc->MaxRxFrameSize =
366 le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
367
368 port_id = ppage0_alloc->PortIdentifier;
369 num_targ++;
370 *p_p0 = *ppage0_alloc; /* save data */
371 *p_pp0++ = p_p0++; /* save addr */
372 }
373 pci_free_consistent(ioc->pcidev, data_sz,
374 (u8 *) ppage0_alloc, page0_dma);
375 if (rc != 0)
376 break;
377
378 } while (port_id <= 0xff0000);
379
380 if (num_targ) {
381 /* sort array */
382 if (num_targ > 1)
383 sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
384 mptfc_FcDevPage0_cmp_func, NULL);
385 /* call caller's func for each targ */
386 for (ii = 0; ii < num_targ; ii++) {
387 fc = *(pp0_array+ii);
388 func(ioc, ioc_port, fc);
389 }
390 }
391
392 out:
393 kfree(pp0_array);
394 kfree(p0_array);
395 return rc;
396 }
397
398 static int
399 mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
400 {
401 /* not currently usable */
402 if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
403 MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
404 return -1;
405
406 if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
407 return -1;
408
409 if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
410 return -1;
411
412 /*
413 * board data structure already normalized to platform endianness
414 * shifted to avoid unaligned access on 64 bit architecture
415 */
416 rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
417 rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
418 rid->port_id = pg0->PortIdentifier;
419 rid->roles = FC_RPORT_ROLE_UNKNOWN;
420
421 return 0;
422 }
423
424 static void
425 mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
426 {
427 struct fc_rport_identifiers rport_ids;
428 struct fc_rport *rport;
429 struct mptfc_rport_info *ri;
430 int new_ri = 1;
431 u64 pn, nn;
432 VirtTarget *vtarget;
433 u32 roles = FC_RPORT_ROLE_UNKNOWN;
434
435 if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
436 return;
437
438 roles |= FC_RPORT_ROLE_FCP_TARGET;
439 if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
440 roles |= FC_RPORT_ROLE_FCP_INITIATOR;
441
442 /* scan list looking for a match */
443 list_for_each_entry(ri, &ioc->fc_rports, list) {
444 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
445 if (pn == rport_ids.port_name) { /* match */
446 list_move_tail(&ri->list, &ioc->fc_rports);
447 new_ri = 0;
448 break;
449 }
450 }
451 if (new_ri) { /* allocate one */
452 ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
453 if (!ri)
454 return;
455 list_add_tail(&ri->list, &ioc->fc_rports);
456 }
457
458 ri->pg0 = *pg0; /* add/update pg0 data */
459 ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
460
461 /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
462 if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
463 ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
464 rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
465 if (rport) {
466 ri->rport = rport;
467 if (new_ri) /* may have been reset by user */
468 rport->dev_loss_tmo = mptfc_dev_loss_tmo;
469 /*
470 * if already mapped, remap here. If not mapped,
471 * target_alloc will allocate vtarget and map,
472 * slave_alloc will fill in vdevice from vtarget.
473 */
474 if (ri->starget) {
475 vtarget = ri->starget->hostdata;
476 if (vtarget) {
477 vtarget->id = pg0->CurrentTargetID;
478 vtarget->channel = pg0->CurrentBus;
479 }
480 }
481 *((struct mptfc_rport_info **)rport->dd_data) = ri;
482 /* scan will be scheduled once rport becomes a target */
483 fc_remote_port_rolechg(rport,roles);
484
485 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
486 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
487 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
488 "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
489 "rport tid %d, tmo %d\n",
490 ioc->name,
491 ioc->sh->host_no,
492 pg0->PortIdentifier,
493 (unsigned long long)nn,
494 (unsigned long long)pn,
495 pg0->CurrentTargetID,
496 ri->rport->scsi_target_id,
497 ri->rport->dev_loss_tmo));
498 } else {
499 list_del(&ri->list);
500 kfree(ri);
501 ri = NULL;
502 }
503 }
504 }
505
506 /*
507 * OS entry point to allow for host driver to free allocated memory
508 * Called if no device present or device being unloaded
509 */
510 static void
511 mptfc_target_destroy(struct scsi_target *starget)
512 {
513 struct fc_rport *rport;
514 struct mptfc_rport_info *ri;
515
516 rport = starget_to_rport(starget);
517 if (rport) {
518 ri = *((struct mptfc_rport_info **)rport->dd_data);
519 if (ri) /* better be! */
520 ri->starget = NULL;
521 }
522 if (starget->hostdata)
523 kfree(starget->hostdata);
524 starget->hostdata = NULL;
525 }
526
527 /*
528 * OS entry point to allow host driver to alloc memory
529 * for each scsi target. Called once per device the bus scan.
530 * Return non-zero if allocation fails.
531 */
532 static int
533 mptfc_target_alloc(struct scsi_target *starget)
534 {
535 VirtTarget *vtarget;
536 struct fc_rport *rport;
537 struct mptfc_rport_info *ri;
538 int rc;
539
540 vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
541 if (!vtarget)
542 return -ENOMEM;
543 starget->hostdata = vtarget;
544
545 rc = -ENODEV;
546 rport = starget_to_rport(starget);
547 if (rport) {
548 ri = *((struct mptfc_rport_info **)rport->dd_data);
549 if (ri) { /* better be! */
550 vtarget->id = ri->pg0.CurrentTargetID;
551 vtarget->channel = ri->pg0.CurrentBus;
552 ri->starget = starget;
553 rc = 0;
554 }
555 }
556 if (rc != 0) {
557 kfree(vtarget);
558 starget->hostdata = NULL;
559 }
560
561 return rc;
562 }
563 /*
564 * mptfc_dump_lun_info
565 * @ioc
566 * @rport
567 * @sdev
568 *
569 */
570 static void
571 mptfc_dump_lun_info(MPT_ADAPTER *ioc, struct fc_rport *rport, struct scsi_device *sdev,
572 VirtTarget *vtarget)
573 {
574 u64 nn, pn;
575 struct mptfc_rport_info *ri;
576
577 ri = *((struct mptfc_rport_info **)rport->dd_data);
578 pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
579 nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
580 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
581 "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
582 "CurrentTargetID %d, %x %llx %llx\n",
583 ioc->name,
584 sdev->host->host_no,
585 vtarget->num_luns,
586 sdev->id, ri->pg0.CurrentTargetID,
587 ri->pg0.PortIdentifier,
588 (unsigned long long)pn,
589 (unsigned long long)nn));
590 }
591
592
593 /*
594 * OS entry point to allow host driver to alloc memory
595 * for each scsi device. Called once per device the bus scan.
596 * Return non-zero if allocation fails.
597 * Init memory once per LUN.
598 */
599 static int
600 mptfc_slave_alloc(struct scsi_device *sdev)
601 {
602 MPT_SCSI_HOST *hd;
603 VirtTarget *vtarget;
604 VirtDevice *vdevice;
605 struct scsi_target *starget;
606 struct fc_rport *rport;
607 MPT_ADAPTER *ioc;
608
609 starget = scsi_target(sdev);
610 rport = starget_to_rport(starget);
611
612 if (!rport || fc_remote_port_chkready(rport))
613 return -ENXIO;
614
615 hd = shost_priv(sdev->host);
616 ioc = hd->ioc;
617
618 vdevice = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
619 if (!vdevice) {
620 printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
621 ioc->name, sizeof(VirtDevice));
622 return -ENOMEM;
623 }
624
625
626 sdev->hostdata = vdevice;
627 vtarget = starget->hostdata;
628
629 if (vtarget->num_luns == 0) {
630 vtarget->ioc_id = ioc->id;
631 vtarget->tflags = MPT_TARGET_FLAGS_Q_YES;
632 }
633
634 vdevice->vtarget = vtarget;
635 vdevice->lun = sdev->lun;
636
637 vtarget->num_luns++;
638
639
640 mptfc_dump_lun_info(ioc, rport, sdev, vtarget);
641
642 return 0;
643 }
644
645 static int
646 mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
647 {
648 struct mptfc_rport_info *ri;
649 struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
650 int err;
651 VirtDevice *vdevice = SCpnt->device->hostdata;
652
653 if (!vdevice || !vdevice->vtarget) {
654 SCpnt->result = DID_NO_CONNECT << 16;
655 done(SCpnt);
656 return 0;
657 }
658
659 err = fc_remote_port_chkready(rport);
660 if (unlikely(err)) {
661 SCpnt->result = err;
662 done(SCpnt);
663 return 0;
664 }
665
666 /* dd_data is null until finished adding target */
667 ri = *((struct mptfc_rport_info **)rport->dd_data);
668 if (unlikely(!ri)) {
669 SCpnt->result = DID_IMM_RETRY << 16;
670 done(SCpnt);
671 return 0;
672 }
673
674 return mptscsih_qcmd(SCpnt,done);
675 }
676
677 /*
678 * mptfc_display_port_link_speed - displaying link speed
679 * @ioc: Pointer to MPT_ADAPTER structure
680 * @portnum: IOC Port number
681 * @pp0dest: port page0 data payload
682 *
683 */
684 static void
685 mptfc_display_port_link_speed(MPT_ADAPTER *ioc, int portnum, FCPortPage0_t *pp0dest)
686 {
687 u8 old_speed, new_speed, state;
688 char *old, *new;
689
690 if (portnum >= 2)
691 return;
692
693 old_speed = ioc->fc_link_speed[portnum];
694 new_speed = pp0dest->CurrentSpeed;
695 state = pp0dest->PortState;
696
697 if (state != MPI_FCPORTPAGE0_PORTSTATE_OFFLINE &&
698 new_speed != MPI_FCPORTPAGE0_CURRENT_SPEED_UKNOWN) {
699
700 old = old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
701 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
702 old_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
703 "Unknown";
704 new = new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT ? "1 Gbps" :
705 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT ? "2 Gbps" :
706 new_speed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT ? "4 Gbps" :
707 "Unknown";
708 if (old_speed == 0)
709 printk(MYIOC_s_NOTE_FMT
710 "FC Link Established, Speed = %s\n",
711 ioc->name, new);
712 else if (old_speed != new_speed)
713 printk(MYIOC_s_WARN_FMT
714 "FC Link Speed Change, Old Speed = %s, New Speed = %s\n",
715 ioc->name, old, new);
716
717 ioc->fc_link_speed[portnum] = new_speed;
718 }
719 }
720
721 /*
722 * mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
723 * @ioc: Pointer to MPT_ADAPTER structure
724 * @portnum: IOC Port number
725 *
726 * Return: 0 for success
727 * -ENOMEM if no memory available
728 * -EPERM if not allowed due to ISR context
729 * -EAGAIN if no msg frames currently available
730 * -EFAULT for non-successful reply or no reply (timeout)
731 * -EINVAL portnum arg out of range (hardwired to two elements)
732 */
733 static int
734 mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
735 {
736 ConfigPageHeader_t hdr;
737 CONFIGPARMS cfg;
738 FCPortPage0_t *ppage0_alloc;
739 FCPortPage0_t *pp0dest;
740 dma_addr_t page0_dma;
741 int data_sz;
742 int copy_sz;
743 int rc;
744 int count = 400;
745
746 if (portnum > 1)
747 return -EINVAL;
748
749 /* Get FCPort Page 0 header */
750 hdr.PageVersion = 0;
751 hdr.PageLength = 0;
752 hdr.PageNumber = 0;
753 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
754 cfg.cfghdr.hdr = &hdr;
755 cfg.physAddr = -1;
756 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
757 cfg.dir = 0;
758 cfg.pageAddr = portnum;
759 cfg.timeout = 0;
760
761 if ((rc = mpt_config(ioc, &cfg)) != 0)
762 return rc;
763
764 if (hdr.PageLength == 0)
765 return 0;
766
767 data_sz = hdr.PageLength * 4;
768 rc = -ENOMEM;
769 ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
770 if (ppage0_alloc) {
771
772 try_again:
773 memset((u8 *)ppage0_alloc, 0, data_sz);
774 cfg.physAddr = page0_dma;
775 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
776
777 if ((rc = mpt_config(ioc, &cfg)) == 0) {
778 /* save the data */
779 pp0dest = &ioc->fc_port_page0[portnum];
780 copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
781 memcpy(pp0dest, ppage0_alloc, copy_sz);
782
783 /*
784 * Normalize endianness of structure data,
785 * by byte-swapping all > 1 byte fields!
786 */
787 pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
788 pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
789 pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
790 pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
791 pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
792 pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
793 pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
794 pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
795 pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
796 pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
797 pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
798 pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
799 pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
800 pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
801 pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
802 pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
803
804 /*
805 * if still doing discovery,
806 * hang loose a while until finished
807 */
808 if ((pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) ||
809 (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE &&
810 (pp0dest->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_TYPE_MASK)
811 == MPI_FCPORTPAGE0_FLAGS_ATTACH_NO_INIT)) {
812 if (count-- > 0) {
813 msleep(100);
814 goto try_again;
815 }
816 printk(MYIOC_s_INFO_FMT "Firmware discovery not"
817 " complete.\n",
818 ioc->name);
819 }
820 mptfc_display_port_link_speed(ioc, portnum, pp0dest);
821 }
822
823 pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
824 }
825
826 return rc;
827 }
828
829 static int
830 mptfc_WriteFcPortPage1(MPT_ADAPTER *ioc, int portnum)
831 {
832 ConfigPageHeader_t hdr;
833 CONFIGPARMS cfg;
834 int rc;
835
836 if (portnum > 1)
837 return -EINVAL;
838
839 if (!(ioc->fc_data.fc_port_page1[portnum].data))
840 return -EINVAL;
841
842 /* get fcport page 1 header */
843 hdr.PageVersion = 0;
844 hdr.PageLength = 0;
845 hdr.PageNumber = 1;
846 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
847 cfg.cfghdr.hdr = &hdr;
848 cfg.physAddr = -1;
849 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
850 cfg.dir = 0;
851 cfg.pageAddr = portnum;
852 cfg.timeout = 0;
853
854 if ((rc = mpt_config(ioc, &cfg)) != 0)
855 return rc;
856
857 if (hdr.PageLength == 0)
858 return -ENODEV;
859
860 if (hdr.PageLength*4 != ioc->fc_data.fc_port_page1[portnum].pg_sz)
861 return -EINVAL;
862
863 cfg.physAddr = ioc->fc_data.fc_port_page1[portnum].dma;
864 cfg.action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
865 cfg.dir = 1;
866
867 rc = mpt_config(ioc, &cfg);
868
869 return rc;
870 }
871
872 static int
873 mptfc_GetFcPortPage1(MPT_ADAPTER *ioc, int portnum)
874 {
875 ConfigPageHeader_t hdr;
876 CONFIGPARMS cfg;
877 FCPortPage1_t *page1_alloc;
878 dma_addr_t page1_dma;
879 int data_sz;
880 int rc;
881
882 if (portnum > 1)
883 return -EINVAL;
884
885 /* get fcport page 1 header */
886 hdr.PageVersion = 0;
887 hdr.PageLength = 0;
888 hdr.PageNumber = 1;
889 hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
890 cfg.cfghdr.hdr = &hdr;
891 cfg.physAddr = -1;
892 cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
893 cfg.dir = 0;
894 cfg.pageAddr = portnum;
895 cfg.timeout = 0;
896
897 if ((rc = mpt_config(ioc, &cfg)) != 0)
898 return rc;
899
900 if (hdr.PageLength == 0)
901 return -ENODEV;
902
903 start_over:
904
905 if (ioc->fc_data.fc_port_page1[portnum].data == NULL) {
906 data_sz = hdr.PageLength * 4;
907 if (data_sz < sizeof(FCPortPage1_t))
908 data_sz = sizeof(FCPortPage1_t);
909
910 page1_alloc = (FCPortPage1_t *) pci_alloc_consistent(ioc->pcidev,
911 data_sz,
912 &page1_dma);
913 if (!page1_alloc)
914 return -ENOMEM;
915 }
916 else {
917 page1_alloc = ioc->fc_data.fc_port_page1[portnum].data;
918 page1_dma = ioc->fc_data.fc_port_page1[portnum].dma;
919 data_sz = ioc->fc_data.fc_port_page1[portnum].pg_sz;
920 if (hdr.PageLength * 4 > data_sz) {
921 ioc->fc_data.fc_port_page1[portnum].data = NULL;
922 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
923 page1_alloc, page1_dma);
924 goto start_over;
925 }
926 }
927
928 memset(page1_alloc,0,data_sz);
929
930 cfg.physAddr = page1_dma;
931 cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
932
933 if ((rc = mpt_config(ioc, &cfg)) == 0) {
934 ioc->fc_data.fc_port_page1[portnum].data = page1_alloc;
935 ioc->fc_data.fc_port_page1[portnum].pg_sz = data_sz;
936 ioc->fc_data.fc_port_page1[portnum].dma = page1_dma;
937 }
938 else {
939 ioc->fc_data.fc_port_page1[portnum].data = NULL;
940 pci_free_consistent(ioc->pcidev, data_sz, (u8 *)
941 page1_alloc, page1_dma);
942 }
943
944 return rc;
945 }
946
947 static void
948 mptfc_SetFcPortPage1_defaults(MPT_ADAPTER *ioc)
949 {
950 int ii;
951 FCPortPage1_t *pp1;
952
953 #define MPTFC_FW_DEVICE_TIMEOUT (1)
954 #define MPTFC_FW_IO_PEND_TIMEOUT (1)
955 #define ON_FLAGS (MPI_FCPORTPAGE1_FLAGS_IMMEDIATE_ERROR_REPLY)
956 #define OFF_FLAGS (MPI_FCPORTPAGE1_FLAGS_VERBOSE_RESCAN_EVENTS)
957
958 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
959 if (mptfc_GetFcPortPage1(ioc, ii) != 0)
960 continue;
961 pp1 = ioc->fc_data.fc_port_page1[ii].data;
962 if ((pp1->InitiatorDeviceTimeout == MPTFC_FW_DEVICE_TIMEOUT)
963 && (pp1->InitiatorIoPendTimeout == MPTFC_FW_IO_PEND_TIMEOUT)
964 && ((pp1->Flags & ON_FLAGS) == ON_FLAGS)
965 && ((pp1->Flags & OFF_FLAGS) == 0))
966 continue;
967 pp1->InitiatorDeviceTimeout = MPTFC_FW_DEVICE_TIMEOUT;
968 pp1->InitiatorIoPendTimeout = MPTFC_FW_IO_PEND_TIMEOUT;
969 pp1->Flags &= ~OFF_FLAGS;
970 pp1->Flags |= ON_FLAGS;
971 mptfc_WriteFcPortPage1(ioc, ii);
972 }
973 }
974
975
976 static void
977 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
978 {
979 unsigned class = 0;
980 unsigned cos = 0;
981 unsigned speed;
982 unsigned port_type;
983 unsigned port_state;
984 FCPortPage0_t *pp0;
985 struct Scsi_Host *sh;
986 char *sn;
987
988 /* don't know what to do as only one scsi (fc) host was allocated */
989 if (portnum != 0)
990 return;
991
992 pp0 = &ioc->fc_port_page0[portnum];
993 sh = ioc->sh;
994
995 sn = fc_host_symbolic_name(sh);
996 snprintf(sn, FC_SYMBOLIC_NAME_SIZE, "%s %s%08xh",
997 ioc->prod_name,
998 MPT_FW_REV_MAGIC_ID_STRING,
999 ioc->facts.FWVersion.Word);
1000
1001 fc_host_tgtid_bind_type(sh) = FC_TGTID_BIND_BY_WWPN;
1002
1003 fc_host_maxframe_size(sh) = pp0->MaxFrameSize;
1004
1005 fc_host_node_name(sh) =
1006 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1007
1008 fc_host_port_name(sh) =
1009 (u64)pp0->WWPN.High << 32 | (u64)pp0->WWPN.Low;
1010
1011 fc_host_port_id(sh) = pp0->PortIdentifier;
1012
1013 class = pp0->SupportedServiceClass;
1014 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
1015 cos |= FC_COS_CLASS1;
1016 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
1017 cos |= FC_COS_CLASS2;
1018 if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
1019 cos |= FC_COS_CLASS3;
1020 fc_host_supported_classes(sh) = cos;
1021
1022 if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_1GBIT)
1023 speed = FC_PORTSPEED_1GBIT;
1024 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_2GBIT)
1025 speed = FC_PORTSPEED_2GBIT;
1026 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_4GBIT)
1027 speed = FC_PORTSPEED_4GBIT;
1028 else if (pp0->CurrentSpeed == MPI_FCPORTPAGE0_CURRENT_SPEED_10GBIT)
1029 speed = FC_PORTSPEED_10GBIT;
1030 else
1031 speed = FC_PORTSPEED_UNKNOWN;
1032 fc_host_speed(sh) = speed;
1033
1034 speed = 0;
1035 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_1GBIT_SPEED)
1036 speed |= FC_PORTSPEED_1GBIT;
1037 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_2GBIT_SPEED)
1038 speed |= FC_PORTSPEED_2GBIT;
1039 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_4GBIT_SPEED)
1040 speed |= FC_PORTSPEED_4GBIT;
1041 if (pp0->SupportedSpeeds & MPI_FCPORTPAGE0_SUPPORT_10GBIT_SPEED)
1042 speed |= FC_PORTSPEED_10GBIT;
1043 fc_host_supported_speeds(sh) = speed;
1044
1045 port_state = FC_PORTSTATE_UNKNOWN;
1046 if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_ONLINE)
1047 port_state = FC_PORTSTATE_ONLINE;
1048 else if (pp0->PortState == MPI_FCPORTPAGE0_PORTSTATE_OFFLINE)
1049 port_state = FC_PORTSTATE_LINKDOWN;
1050 fc_host_port_state(sh) = port_state;
1051
1052 port_type = FC_PORTTYPE_UNKNOWN;
1053 if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_POINT_TO_POINT)
1054 port_type = FC_PORTTYPE_PTP;
1055 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PRIVATE_LOOP)
1056 port_type = FC_PORTTYPE_LPORT;
1057 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_PUBLIC_LOOP)
1058 port_type = FC_PORTTYPE_NLPORT;
1059 else if (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_ATTACH_FABRIC_DIRECT)
1060 port_type = FC_PORTTYPE_NPORT;
1061 fc_host_port_type(sh) = port_type;
1062
1063 fc_host_fabric_name(sh) =
1064 (pp0->Flags & MPI_FCPORTPAGE0_FLAGS_FABRIC_WWN_VALID) ?
1065 (u64) pp0->FabricWWNN.High << 32 | (u64) pp0->FabricWWPN.Low :
1066 (u64)pp0->WWNN.High << 32 | (u64)pp0->WWNN.Low;
1067
1068 }
1069
1070 static void
1071 mptfc_link_status_change(struct work_struct *work)
1072 {
1073 MPT_ADAPTER *ioc =
1074 container_of(work, MPT_ADAPTER, fc_rescan_work);
1075 int ii;
1076
1077 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++)
1078 (void) mptfc_GetFcPortPage0(ioc, ii);
1079
1080 }
1081
1082 static void
1083 mptfc_setup_reset(struct work_struct *work)
1084 {
1085 MPT_ADAPTER *ioc =
1086 container_of(work, MPT_ADAPTER, fc_setup_reset_work);
1087 u64 pn;
1088 struct mptfc_rport_info *ri;
1089
1090 /* reset about to happen, delete (block) all rports */
1091 list_for_each_entry(ri, &ioc->fc_rports, list) {
1092 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1093 ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
1094 fc_remote_port_delete(ri->rport); /* won't sleep */
1095 ri->rport = NULL;
1096
1097 pn = (u64)ri->pg0.WWPN.High << 32 |
1098 (u64)ri->pg0.WWPN.Low;
1099 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1100 "mptfc_setup_reset.%d: %llx deleted\n",
1101 ioc->name,
1102 ioc->sh->host_no,
1103 (unsigned long long)pn));
1104 }
1105 }
1106 }
1107
1108 static void
1109 mptfc_rescan_devices(struct work_struct *work)
1110 {
1111 MPT_ADAPTER *ioc =
1112 container_of(work, MPT_ADAPTER, fc_rescan_work);
1113 int ii;
1114 u64 pn;
1115 struct mptfc_rport_info *ri;
1116
1117 /* start by tagging all ports as missing */
1118 list_for_each_entry(ri, &ioc->fc_rports, list) {
1119 if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
1120 ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
1121 }
1122 }
1123
1124 /*
1125 * now rescan devices known to adapter,
1126 * will reregister existing rports
1127 */
1128 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1129 (void) mptfc_GetFcPortPage0(ioc, ii);
1130 mptfc_init_host_attr(ioc, ii); /* refresh */
1131 mptfc_GetFcDevPage0(ioc, ii, mptfc_register_dev);
1132 }
1133
1134 /* delete devices still missing */
1135 list_for_each_entry(ri, &ioc->fc_rports, list) {
1136 /* if newly missing, delete it */
1137 if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
1138
1139 ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
1140 MPT_RPORT_INFO_FLAGS_MISSING);
1141 fc_remote_port_delete(ri->rport); /* won't sleep */
1142 ri->rport = NULL;
1143
1144 pn = (u64)ri->pg0.WWPN.High << 32 |
1145 (u64)ri->pg0.WWPN.Low;
1146 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
1147 "mptfc_rescan.%d: %llx deleted\n",
1148 ioc->name,
1149 ioc->sh->host_no,
1150 (unsigned long long)pn));
1151 }
1152 }
1153 }
1154
1155 static int
1156 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1157 {
1158 struct Scsi_Host *sh;
1159 MPT_SCSI_HOST *hd;
1160 MPT_ADAPTER *ioc;
1161 unsigned long flags;
1162 int ii;
1163 int numSGE = 0;
1164 int scale;
1165 int ioc_cap;
1166 int error=0;
1167 int r;
1168
1169 if ((r = mpt_attach(pdev,id)) != 0)
1170 return r;
1171
1172 ioc = pci_get_drvdata(pdev);
1173 ioc->DoneCtx = mptfcDoneCtx;
1174 ioc->TaskCtx = mptfcTaskCtx;
1175 ioc->InternalCtx = mptfcInternalCtx;
1176
1177 /* Added sanity check on readiness of the MPT adapter.
1178 */
1179 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
1180 printk(MYIOC_s_WARN_FMT
1181 "Skipping because it's not operational!\n",
1182 ioc->name);
1183 error = -ENODEV;
1184 goto out_mptfc_probe;
1185 }
1186
1187 if (!ioc->active) {
1188 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
1189 ioc->name);
1190 error = -ENODEV;
1191 goto out_mptfc_probe;
1192 }
1193
1194 /* Sanity check - ensure at least 1 port is INITIATOR capable
1195 */
1196 ioc_cap = 0;
1197 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1198 if (ioc->pfacts[ii].ProtocolFlags &
1199 MPI_PORTFACTS_PROTOCOL_INITIATOR)
1200 ioc_cap ++;
1201 }
1202
1203 if (!ioc_cap) {
1204 printk(MYIOC_s_WARN_FMT
1205 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
1206 ioc->name, ioc);
1207 return 0;
1208 }
1209
1210 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
1211
1212 if (!sh) {
1213 printk(MYIOC_s_WARN_FMT
1214 "Unable to register controller with SCSI subsystem\n",
1215 ioc->name);
1216 error = -1;
1217 goto out_mptfc_probe;
1218 }
1219
1220 spin_lock_init(&ioc->fc_rescan_work_lock);
1221 INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices);
1222 INIT_WORK(&ioc->fc_setup_reset_work, mptfc_setup_reset);
1223 INIT_WORK(&ioc->fc_lsc_work, mptfc_link_status_change);
1224
1225 spin_lock_irqsave(&ioc->FreeQlock, flags);
1226
1227 /* Attach the SCSI Host to the IOC structure
1228 */
1229 ioc->sh = sh;
1230
1231 sh->io_port = 0;
1232 sh->n_io_port = 0;
1233 sh->irq = 0;
1234
1235 /* set 16 byte cdb's */
1236 sh->max_cmd_len = 16;
1237
1238 sh->max_id = ioc->pfacts->MaxDevices;
1239 sh->max_lun = max_lun;
1240
1241 /* Required entry.
1242 */
1243 sh->unique_id = ioc->id;
1244
1245 /* Verify that we won't exceed the maximum
1246 * number of chain buffers
1247 * We can optimize: ZZ = req_sz/sizeof(SGE)
1248 * For 32bit SGE's:
1249 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
1250 * + (req_sz - 64)/sizeof(SGE)
1251 * A slightly different algorithm is required for
1252 * 64bit SGEs.
1253 */
1254 scale = ioc->req_sz/ioc->SGE_size;
1255 if (ioc->sg_addr_size == sizeof(u64)) {
1256 numSGE = (scale - 1) *
1257 (ioc->facts.MaxChainDepth-1) + scale +
1258 (ioc->req_sz - 60) / ioc->SGE_size;
1259 } else {
1260 numSGE = 1 + (scale - 1) *
1261 (ioc->facts.MaxChainDepth-1) + scale +
1262 (ioc->req_sz - 64) / ioc->SGE_size;
1263 }
1264
1265 if (numSGE < sh->sg_tablesize) {
1266 /* Reset this value */
1267 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1268 "Resetting sg_tablesize to %d from %d\n",
1269 ioc->name, numSGE, sh->sg_tablesize));
1270 sh->sg_tablesize = numSGE;
1271 }
1272
1273 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1274
1275 hd = shost_priv(sh);
1276 hd->ioc = ioc;
1277
1278 /* SCSI needs scsi_cmnd lookup table!
1279 * (with size equal to req_depth*PtrSz!)
1280 */
1281 ioc->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
1282 if (!ioc->ScsiLookup) {
1283 error = -ENOMEM;
1284 goto out_mptfc_probe;
1285 }
1286 spin_lock_init(&ioc->scsi_lookup_lock);
1287
1288 dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScsiLookup @ %p\n",
1289 ioc->name, ioc->ScsiLookup));
1290
1291 hd->last_queue_full = 0;
1292
1293 sh->transportt = mptfc_transport_template;
1294 error = scsi_add_host (sh, &ioc->pcidev->dev);
1295 if(error) {
1296 dprintk(ioc, printk(MYIOC_s_ERR_FMT
1297 "scsi_add_host failed\n", ioc->name));
1298 goto out_mptfc_probe;
1299 }
1300
1301 /* initialize workqueue */
1302
1303 snprintf(ioc->fc_rescan_work_q_name, sizeof(ioc->fc_rescan_work_q_name),
1304 "mptfc_wq_%d", sh->host_no);
1305 ioc->fc_rescan_work_q =
1306 create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
1307 if (!ioc->fc_rescan_work_q)
1308 goto out_mptfc_probe;
1309
1310 /*
1311 * Pre-fetch FC port WWN and stuff...
1312 * (FCPortPage0_t stuff)
1313 */
1314 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
1315 (void) mptfc_GetFcPortPage0(ioc, ii);
1316 }
1317 mptfc_SetFcPortPage1_defaults(ioc);
1318
1319 /*
1320 * scan for rports -
1321 * by doing it via the workqueue, some locking is eliminated
1322 */
1323
1324 queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
1325 flush_workqueue(ioc->fc_rescan_work_q);
1326
1327 return 0;
1328
1329 out_mptfc_probe:
1330
1331 mptscsih_remove(pdev);
1332 return error;
1333 }
1334
1335 static struct pci_driver mptfc_driver = {
1336 .name = "mptfc",
1337 .id_table = mptfc_pci_table,
1338 .probe = mptfc_probe,
1339 .remove = __devexit_p(mptfc_remove),
1340 .shutdown = mptscsih_shutdown,
1341 #ifdef CONFIG_PM
1342 .suspend = mptscsih_suspend,
1343 .resume = mptscsih_resume,
1344 #endif
1345 };
1346
1347 static int
1348 mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
1349 {
1350 MPT_SCSI_HOST *hd;
1351 u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
1352 unsigned long flags;
1353 int rc=1;
1354
1355 devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
1356 ioc->name, event));
1357
1358 if (ioc->sh == NULL ||
1359 ((hd = shost_priv(ioc->sh)) == NULL))
1360 return 1;
1361
1362 switch (event) {
1363 case MPI_EVENT_RESCAN:
1364 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1365 if (ioc->fc_rescan_work_q) {
1366 queue_work(ioc->fc_rescan_work_q,
1367 &ioc->fc_rescan_work);
1368 }
1369 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1370 break;
1371 case MPI_EVENT_LINK_STATUS_CHANGE:
1372 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1373 if (ioc->fc_rescan_work_q) {
1374 queue_work(ioc->fc_rescan_work_q,
1375 &ioc->fc_lsc_work);
1376 }
1377 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1378 break;
1379 default:
1380 rc = mptscsih_event_process(ioc,pEvReply);
1381 break;
1382 }
1383 return rc;
1384 }
1385
1386 static int
1387 mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
1388 {
1389 int rc;
1390 unsigned long flags;
1391
1392 rc = mptscsih_ioc_reset(ioc,reset_phase);
1393 if (rc == 0)
1394 return rc;
1395
1396
1397 dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1398 ": IOC %s_reset routed to FC host driver!\n",ioc->name,
1399 reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
1400 reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
1401
1402 if (reset_phase == MPT_IOC_SETUP_RESET) {
1403 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1404 if (ioc->fc_rescan_work_q) {
1405 queue_work(ioc->fc_rescan_work_q,
1406 &ioc->fc_setup_reset_work);
1407 }
1408 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1409 }
1410
1411 else if (reset_phase == MPT_IOC_PRE_RESET) {
1412 }
1413
1414 else { /* MPT_IOC_POST_RESET */
1415 mptfc_SetFcPortPage1_defaults(ioc);
1416 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1417 if (ioc->fc_rescan_work_q) {
1418 queue_work(ioc->fc_rescan_work_q,
1419 &ioc->fc_rescan_work);
1420 }
1421 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1422 }
1423 return 1;
1424 }
1425
1426 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1427 /**
1428 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with SCSI mid-layer.
1429 *
1430 * Returns 0 for success, non-zero for failure.
1431 */
1432 static int __init
1433 mptfc_init(void)
1434 {
1435 int error;
1436
1437 show_mptmod_ver(my_NAME, my_VERSION);
1438
1439 /* sanity check module parameters */
1440 if (mptfc_dev_loss_tmo <= 0)
1441 mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
1442
1443 mptfc_transport_template =
1444 fc_attach_transport(&mptfc_transport_functions);
1445
1446 if (!mptfc_transport_template)
1447 return -ENODEV;
1448
1449 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
1450 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
1451 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
1452
1453 mpt_event_register(mptfcDoneCtx, mptfc_event_process);
1454 mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset);
1455
1456 error = pci_register_driver(&mptfc_driver);
1457 if (error)
1458 fc_release_transport(mptfc_transport_template);
1459
1460 return error;
1461 }
1462
1463 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1464 /**
1465 * mptfc_remove - Remove fc infrastructure for devices
1466 * @pdev: Pointer to pci_dev structure
1467 *
1468 */
1469 static void __devexit
1470 mptfc_remove(struct pci_dev *pdev)
1471 {
1472 MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
1473 struct mptfc_rport_info *p, *n;
1474 struct workqueue_struct *work_q;
1475 unsigned long flags;
1476 int ii;
1477
1478 /* destroy workqueue */
1479 if ((work_q=ioc->fc_rescan_work_q)) {
1480 spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
1481 ioc->fc_rescan_work_q = NULL;
1482 spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
1483 destroy_workqueue(work_q);
1484 }
1485
1486 fc_remove_host(ioc->sh);
1487
1488 list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
1489 list_del(&p->list);
1490 kfree(p);
1491 }
1492
1493 for (ii=0; ii<ioc->facts.NumberOfPorts; ii++) {
1494 if (ioc->fc_data.fc_port_page1[ii].data) {
1495 pci_free_consistent(ioc->pcidev,
1496 ioc->fc_data.fc_port_page1[ii].pg_sz,
1497 (u8 *) ioc->fc_data.fc_port_page1[ii].data,
1498 ioc->fc_data.fc_port_page1[ii].dma);
1499 ioc->fc_data.fc_port_page1[ii].data = NULL;
1500 }
1501 }
1502
1503 mptscsih_remove(pdev);
1504 }
1505
1506 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1507 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1508 /**
1509 * mptfc_exit - Unregisters MPT adapter(s)
1510 *
1511 */
1512 static void __exit
1513 mptfc_exit(void)
1514 {
1515 pci_unregister_driver(&mptfc_driver);
1516 fc_release_transport(mptfc_transport_template);
1517
1518 mpt_reset_deregister(mptfcDoneCtx);
1519 mpt_event_deregister(mptfcDoneCtx);
1520
1521 mpt_deregister(mptfcInternalCtx);
1522 mpt_deregister(mptfcTaskCtx);
1523 mpt_deregister(mptfcDoneCtx);
1524 }
1525
1526 module_init(mptfc_init);
1527 module_exit(mptfc_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree