1 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
2 *
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 *
10 * Thanks to the following companies for their support:
11 *
12 * - JMicron (hardware and technical support)
13 */
14
15 #include <linux/delay.h>
16 #include <linux/highmem.h>
17 #include <linux/pci.h>
18 #include <linux/dma-mapping.h>
19
20 #include <linux/mmc/host.h>
21
22 #include <asm/scatterlist.h>
23 #include <asm/io.h>
24
25 #include "sdhci.h"
26
27 /*
28 * PCI registers
29 */
30
31 #define PCI_SDHCI_IFPIO 0x00
32 #define PCI_SDHCI_IFDMA 0x01
33 #define PCI_SDHCI_IFVENDOR 0x02
34
35 #define PCI_SLOT_INFO 0x40 /* 8 bits */
36 #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
37 #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
38
39 #define MAX_SLOTS 8
40
41 struct sdhci_pci_chip;
42 struct sdhci_pci_slot;
43
44 struct sdhci_pci_fixes {
45 unsigned int quirks;
46
47 int (*probe)(struct sdhci_pci_chip*);
48
49 int (*probe_slot)(struct sdhci_pci_slot*);
50 void (*remove_slot)(struct sdhci_pci_slot*, int);
51
52 int (*suspend)(struct sdhci_pci_chip*,
53 pm_message_t);
54 int (*resume)(struct sdhci_pci_chip*);
55 };
56
57 struct sdhci_pci_slot {
58 struct sdhci_pci_chip *chip;
59 struct sdhci_host *host;
60
61 int pci_bar;
62 };
63
64 struct sdhci_pci_chip {
65 struct pci_dev *pdev;
66
67 unsigned int quirks;
68 const struct sdhci_pci_fixes *fixes;
69
70 int num_slots; /* Slots on controller */
71 struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
72 };
73
74
75 /*****************************************************************************\
76 * *
77 * Hardware specific quirk handling *
78 * *
79 \*****************************************************************************/
80
81 static int ricoh_probe(struct sdhci_pci_chip *chip)
82 {
83 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
84 chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET;
85
86 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)
87 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
88
89 return 0;
90 }
91
92 static const struct sdhci_pci_fixes sdhci_ricoh = {
93 .probe = ricoh_probe,
94 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR,
95 };
96
97 static const struct sdhci_pci_fixes sdhci_ene_712 = {
98 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
99 SDHCI_QUIRK_BROKEN_DMA,
100 };
101
102 static const struct sdhci_pci_fixes sdhci_ene_714 = {
103 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
104 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
105 SDHCI_QUIRK_BROKEN_DMA,
106 };
107
108 static const struct sdhci_pci_fixes sdhci_cafe = {
109 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
110 SDHCI_QUIRK_NO_BUSY_IRQ |
111 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
112 };
113
114 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
115 {
116 u8 scratch;
117 int ret;
118
119 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
120 if (ret)
121 return ret;
122
123 /*
124 * Turn PMOS on [bit 0], set over current detection to 2.4 V
125 * [bit 1:2] and enable over current debouncing [bit 6].
126 */
127 if (on)
128 scratch |= 0x47;
129 else
130 scratch &= ~0x47;
131
132 ret = pci_write_config_byte(chip->pdev, 0xAE, scratch);
133 if (ret)
134 return ret;
135
136 return 0;
137 }
138
139 static int jmicron_probe(struct sdhci_pci_chip *chip)
140 {
141 int ret;
142
143 if (chip->pdev->revision == 0) {
144 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
145 SDHCI_QUIRK_32BIT_DMA_SIZE |
146 SDHCI_QUIRK_32BIT_ADMA_SIZE |
147 SDHCI_QUIRK_RESET_AFTER_REQUEST |
148 SDHCI_QUIRK_BROKEN_SMALL_PIO;
149 }
150
151 /*
152 * JMicron chips can have two interfaces to the same hardware
153 * in order to work around limitations in Microsoft's driver.
154 * We need to make sure we only bind to one of them.
155 *
156 * This code assumes two things:
157 *
158 * 1. The PCI code adds subfunctions in order.
159 *
160 * 2. The MMC interface has a lower subfunction number
161 * than the SD interface.
162 */
163 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) {
164 struct pci_dev *sd_dev;
165
166 sd_dev = NULL;
167 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
168 PCI_DEVICE_ID_JMICRON_JMB38X_MMC, sd_dev)) != NULL) {
169 if ((PCI_SLOT(chip->pdev->devfn) ==
170 PCI_SLOT(sd_dev->devfn)) &&
171 (chip->pdev->bus == sd_dev->bus))
172 break;
173 }
174
175 if (sd_dev) {
176 pci_dev_put(sd_dev);
177 dev_info(&chip->pdev->dev, "Refusing to bind to "
178 "secondary interface.\n");
179 return -ENODEV;
180 }
181 }
182
183 /*
184 * JMicron chips need a bit of a nudge to enable the power
185 * output pins.
186 */
187 ret = jmicron_pmos(chip, 1);
188 if (ret) {
189 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
190 return ret;
191 }
192
193 return 0;
194 }
195
196 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
197 {
198 u8 scratch;
199
200 scratch = readb(host->ioaddr + 0xC0);
201
202 if (on)
203 scratch |= 0x01;
204 else
205 scratch &= ~0x01;
206
207 writeb(scratch, host->ioaddr + 0xC0);
208 }
209
210 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
211 {
212 if (slot->chip->pdev->revision == 0) {
213 u16 version;
214
215 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
216 version = (version & SDHCI_VENDOR_VER_MASK) >>
217 SDHCI_VENDOR_VER_SHIFT;
218
219 /*
220 * Older versions of the chip have lots of nasty glitches
221 * in the ADMA engine. It's best just to avoid it
222 * completely.
223 */
224 if (version < 0xAC)
225 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
226 }
227
228 /*
229 * The secondary interface requires a bit set to get the
230 * interrupts.
231 */
232 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
233 jmicron_enable_mmc(slot->host, 1);
234
235 return 0;
236 }
237
238 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
239 {
240 if (dead)
241 return;
242
243 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC)
244 jmicron_enable_mmc(slot->host, 0);
245 }
246
247 static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state)
248 {
249 int i;
250
251 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
252 for (i = 0;i < chip->num_slots;i++)
253 jmicron_enable_mmc(chip->slots[i]->host, 0);
254 }
255
256 return 0;
257 }
258
259 static int jmicron_resume(struct sdhci_pci_chip *chip)
260 {
261 int ret, i;
262
263 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) {
264 for (i = 0;i < chip->num_slots;i++)
265 jmicron_enable_mmc(chip->slots[i]->host, 1);
266 }
267
268 ret = jmicron_pmos(chip, 1);
269 if (ret) {
270 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
271 return ret;
272 }
273
274 return 0;
275 }
276
277 static const struct sdhci_pci_fixes sdhci_jmicron = {
278 .probe = jmicron_probe,
279
280 .probe_slot = jmicron_probe_slot,
281 .remove_slot = jmicron_remove_slot,
282
283 .suspend = jmicron_suspend,
284 .resume = jmicron_resume,
285 };
286
287 static int via_probe(struct sdhci_pci_chip *chip)
288 {
289 if (chip->pdev->revision == 0x10)
290 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
291
292 return 0;
293 }
294
295 static const struct sdhci_pci_fixes sdhci_via = {
296 .probe = via_probe,
297 };
298
299 static const struct pci_device_id pci_ids[] __devinitdata = {
300 {
301 .vendor = PCI_VENDOR_ID_RICOH,
302 .device = PCI_DEVICE_ID_RICOH_R5C822,
303 .subvendor = PCI_ANY_ID,
304 .subdevice = PCI_ANY_ID,
305 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
306 },
307
308 {
309 .vendor = PCI_VENDOR_ID_ENE,
310 .device = PCI_DEVICE_ID_ENE_CB712_SD,
311 .subvendor = PCI_ANY_ID,
312 .subdevice = PCI_ANY_ID,
313 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
314 },
315
316 {
317 .vendor = PCI_VENDOR_ID_ENE,
318 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
319 .subvendor = PCI_ANY_ID,
320 .subdevice = PCI_ANY_ID,
321 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
322 },
323
324 {
325 .vendor = PCI_VENDOR_ID_ENE,
326 .device = PCI_DEVICE_ID_ENE_CB714_SD,
327 .subvendor = PCI_ANY_ID,
328 .subdevice = PCI_ANY_ID,
329 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
330 },
331
332 {
333 .vendor = PCI_VENDOR_ID_ENE,
334 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
335 .subvendor = PCI_ANY_ID,
336 .subdevice = PCI_ANY_ID,
337 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
338 },
339
340 {
341 .vendor = PCI_VENDOR_ID_MARVELL,
342 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
343 .subvendor = PCI_ANY_ID,
344 .subdevice = PCI_ANY_ID,
345 .driver_data = (kernel_ulong_t)&sdhci_cafe,
346 },
347
348 {
349 .vendor = PCI_VENDOR_ID_JMICRON,
350 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
351 .subvendor = PCI_ANY_ID,
352 .subdevice = PCI_ANY_ID,
353 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
354 },
355
356 {
357 .vendor = PCI_VENDOR_ID_JMICRON,
358 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
359 .subvendor = PCI_ANY_ID,
360 .subdevice = PCI_ANY_ID,
361 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
362 },
363
364 {
365 .vendor = PCI_VENDOR_ID_VIA,
366 .device = 0x95d0,
367 .subvendor = PCI_ANY_ID,
368 .subdevice = PCI_ANY_ID,
369 .driver_data = (kernel_ulong_t)&sdhci_via,
370 },
371
372 { /* Generic SD host controller */
373 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
374 },
375
376 { /* end: all zeroes */ },
377 };
378
379 MODULE_DEVICE_TABLE(pci, pci_ids);
380
381 /*****************************************************************************\
382 * *
383 * SDHCI core callbacks *
384 * *
385 \*****************************************************************************/
386
387 static int sdhci_pci_enable_dma(struct sdhci_host *host)
388 {
389 struct sdhci_pci_slot *slot;
390 struct pci_dev *pdev;
391 int ret;
392
393 slot = sdhci_priv(host);
394 pdev = slot->chip->pdev;
395
396 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
397 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
398 (host->flags & SDHCI_USE_DMA)) {
399 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
400 "doesn't fully claim to support it.\n");
401 }
402
403 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
404 if (ret)
405 return ret;
406
407 pci_set_master(pdev);
408
409 return 0;
410 }
411
412 static struct sdhci_ops sdhci_pci_ops = {
413 .enable_dma = sdhci_pci_enable_dma,
414 };
415
416 /*****************************************************************************\
417 * *
418 * Suspend/resume *
419 * *
420 \*****************************************************************************/
421
422 #ifdef CONFIG_PM
423
424 static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
425 {
426 struct sdhci_pci_chip *chip;
427 struct sdhci_pci_slot *slot;
428 int i, ret;
429
430 chip = pci_get_drvdata(pdev);
431 if (!chip)
432 return 0;
433
434 for (i = 0;i < chip->num_slots;i++) {
435 slot = chip->slots[i];
436 if (!slot)
437 continue;
438
439 ret = sdhci_suspend_host(slot->host, state);
440
441 if (ret) {
442 for (i--;i >= 0;i--)
443 sdhci_resume_host(chip->slots[i]->host);
444 return ret;
445 }
446 }
447
448 if (chip->fixes && chip->fixes->suspend) {
449 ret = chip->fixes->suspend(chip, state);
450 if (ret) {
451 for (i = chip->num_slots - 1;i >= 0;i--)
452 sdhci_resume_host(chip->slots[i]->host);
453 return ret;
454 }
455 }
456
457 pci_save_state(pdev);
458 pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
459 pci_disable_device(pdev);
460 pci_set_power_state(pdev, pci_choose_state(pdev, state));
461
462 return 0;
463 }
464
465 static int sdhci_pci_resume (struct pci_dev *pdev)
466 {
467 struct sdhci_pci_chip *chip;
468 struct sdhci_pci_slot *slot;
469 int i, ret;
470
471 chip = pci_get_drvdata(pdev);
472 if (!chip)
473 return 0;
474
475 pci_set_power_state(pdev, PCI_D0);
476 pci_restore_state(pdev);
477 ret = pci_enable_device(pdev);
478 if (ret)
479 return ret;
480
481 if (chip->fixes && chip->fixes->resume) {
482 ret = chip->fixes->resume(chip);
483 if (ret)
484 return ret;
485 }
486
487 for (i = 0;i < chip->num_slots;i++) {
488 slot = chip->slots[i];
489 if (!slot)
490 continue;
491
492 ret = sdhci_resume_host(slot->host);
493 if (ret)
494 return ret;
495 }
496
497 return 0;
498 }
499
500 #else /* CONFIG_PM */
501
502 #define sdhci_pci_suspend NULL
503 #define sdhci_pci_resume NULL
504
505 #endif /* CONFIG_PM */
506
507 /*****************************************************************************\
508 * *
509 * Device probing/removal *
510 * *
511 \*****************************************************************************/
512
513 static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
514 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar)
515 {
516 struct sdhci_pci_slot *slot;
517 struct sdhci_host *host;
518
519 resource_size_t addr;
520
521 int ret;
522
523 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
524 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
525 return ERR_PTR(-ENODEV);
526 }
527
528 if (pci_resource_len(pdev, bar) != 0x100) {
529 dev_err(&pdev->dev, "Invalid iomem size. You may "
530 "experience problems.\n");
531 }
532
533 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
534 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
535 return ERR_PTR(-ENODEV);
536 }
537
538 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
539 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
540 return ERR_PTR(-ENODEV);
541 }
542
543 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
544 if (IS_ERR(host)) {
545 dev_err(&pdev->dev, "cannot allocate host\n");
546 return ERR_PTR(PTR_ERR(host));
547 }
548
549 slot = sdhci_priv(host);
550
551 slot->chip = chip;
552 slot->host = host;
553 slot->pci_bar = bar;
554
555 host->hw_name = "PCI";
556 host->ops = &sdhci_pci_ops;
557 host->quirks = chip->quirks;
558
559 host->irq = pdev->irq;
560
561 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
562 if (ret) {
563 dev_err(&pdev->dev, "cannot request region\n");
564 goto free;
565 }
566
567 addr = pci_resource_start(pdev, bar);
568 host->ioaddr = pci_ioremap_bar(pdev, bar);
569 if (!host->ioaddr) {
570 dev_err(&pdev->dev, "failed to remap registers\n");
571 goto release;
572 }
573
574 if (chip->fixes && chip->fixes->probe_slot) {
575 ret = chip->fixes->probe_slot(slot);
576 if (ret)
577 goto unmap;
578 }
579
580 ret = sdhci_add_host(host);
581 if (ret)
582 goto remove;
583
584 return slot;
585
586 remove:
587 if (chip->fixes && chip->fixes->remove_slot)
588 chip->fixes->remove_slot(slot, 0);
589
590 unmap:
591 iounmap(host->ioaddr);
592
593 release:
594 pci_release_region(pdev, bar);
595
596 free:
597 sdhci_free_host(host);
598
599 return ERR_PTR(ret);
600 }
601
602 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
603 {
604 int dead;
605 u32 scratch;
606
607 dead = 0;
608 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
609 if (scratch == (u32)-1)
610 dead = 1;
611
612 sdhci_remove_host(slot->host, dead);
613
614 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
615 slot->chip->fixes->remove_slot(slot, dead);
616
617 pci_release_region(slot->chip->pdev, slot->pci_bar);
618
619 sdhci_free_host(slot->host);
620 }
621
622 static int __devinit sdhci_pci_probe(struct pci_dev *pdev,
623 const struct pci_device_id *ent)
624 {
625 struct sdhci_pci_chip *chip;
626 struct sdhci_pci_slot *slot;
627
628 u8 slots, rev, first_bar;
629 int ret, i;
630
631 BUG_ON(pdev == NULL);
632 BUG_ON(ent == NULL);
633
634 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev);
635
636 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
637 (int)pdev->vendor, (int)pdev->device, (int)rev);
638
639 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
640 if (ret)
641 return ret;
642
643 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
644 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
645 if (slots == 0)
646 return -ENODEV;
647
648 BUG_ON(slots > MAX_SLOTS);
649
650 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
651 if (ret)
652 return ret;
653
654 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
655
656 if (first_bar > 5) {
657 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
658 return -ENODEV;
659 }
660
661 ret = pci_enable_device(pdev);
662 if (ret)
663 return ret;
664
665 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
666 if (!chip) {
667 ret = -ENOMEM;
668 goto err;
669 }
670
671 chip->pdev = pdev;
672 chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data;
673 if (chip->fixes)
674 chip->quirks = chip->fixes->quirks;
675 chip->num_slots = slots;
676
677 pci_set_drvdata(pdev, chip);
678
679 if (chip->fixes && chip->fixes->probe) {
680 ret = chip->fixes->probe(chip);
681 if (ret)
682 goto free;
683 }
684
685 for (i = 0;i < slots;i++) {
686 slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i);
687 if (IS_ERR(slot)) {
688 for (i--;i >= 0;i--)
689 sdhci_pci_remove_slot(chip->slots[i]);
690 ret = PTR_ERR(slot);
691 goto free;
692 }
693
694 chip->slots[i] = slot;
695 }
696
697 return 0;
698
699 free:
700 pci_set_drvdata(pdev, NULL);
701 kfree(chip);
702
703 err:
704 pci_disable_device(pdev);
705 return ret;
706 }
707
708 static void __devexit sdhci_pci_remove(struct pci_dev *pdev)
709 {
710 int i;
711 struct sdhci_pci_chip *chip;
712
713 chip = pci_get_drvdata(pdev);
714
715 if (chip) {
716 for (i = 0;i < chip->num_slots; i++)
717 sdhci_pci_remove_slot(chip->slots[i]);
718
719 pci_set_drvdata(pdev, NULL);
720 kfree(chip);
721 }
722
723 pci_disable_device(pdev);
724 }
725
726 static struct pci_driver sdhci_driver = {
727 .name = "sdhci-pci",
728 .id_table = pci_ids,
729 .probe = sdhci_pci_probe,
730 .remove = __devexit_p(sdhci_pci_remove),
731 .suspend = sdhci_pci_suspend,
732 .resume = sdhci_pci_resume,
733 };
734
735 /*****************************************************************************\
736 * *
737 * Driver init/exit *
738 * *
739 \*****************************************************************************/
740
741 static int __init sdhci_drv_init(void)
742 {
743 return pci_register_driver(&sdhci_driver);
744 }
745
746 static void __exit sdhci_drv_exit(void)
747 {
748 pci_unregister_driver(&sdhci_driver);
749 }
750
751 module_init(sdhci_drv_init);
752 module_exit(sdhci_drv_exit);
753
754 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
755 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
756 MODULE_LICENSE("GPL");
757
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