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11#include <linux/module.h>
12#include <linux/pci.h>
13#include <linux/init.h>
14#include <linux/agp_backend.h>
15#include <linux/mmzone.h>
16#include <asm/page.h>
17#include <asm/e820/api.h>
18#include <asm/amd_nb.h>
19#include <asm/gart.h>
20#include "agp.h"
21
22
23#define NVIDIA_X86_64_0_APBASE 0x10
24#define NVIDIA_X86_64_1_APBASE1 0x50
25#define NVIDIA_X86_64_1_APLIMIT1 0x54
26#define NVIDIA_X86_64_1_APSIZE 0xa8
27#define NVIDIA_X86_64_1_APBASE2 0xd8
28#define NVIDIA_X86_64_1_APLIMIT2 0xdc
29
30
31#define ULI_X86_64_BASE_ADDR 0x10
32#define ULI_X86_64_HTT_FEA_REG 0x50
33#define ULI_X86_64_ENU_SCR_REG 0x54
34
35static struct resource *aperture_resource;
36static bool __initdata agp_try_unsupported = 1;
37static int agp_bridges_found;
38
39static void amd64_tlbflush(struct agp_memory *temp)
40{
41 amd_flush_garts();
42}
43
44static int amd64_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
45{
46 int i, j, num_entries;
47 long long tmp;
48 int mask_type;
49 struct agp_bridge_data *bridge = mem->bridge;
50 u32 pte;
51
52 num_entries = agp_num_entries();
53
54 if (type != mem->type)
55 return -EINVAL;
56 mask_type = bridge->driver->agp_type_to_mask_type(bridge, type);
57 if (mask_type != 0)
58 return -EINVAL;
59
60
61
62
63 if (((unsigned long)pg_start + mem->page_count) > num_entries)
64 return -EINVAL;
65
66 j = pg_start;
67
68
69 while (j < (pg_start + mem->page_count)) {
70 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j)))
71 return -EBUSY;
72 j++;
73 }
74
75 if (!mem->is_flushed) {
76 global_cache_flush();
77 mem->is_flushed = true;
78 }
79
80 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
81 tmp = agp_bridge->driver->mask_memory(agp_bridge,
82 page_to_phys(mem->pages[i]),
83 mask_type);
84
85 BUG_ON(tmp & 0xffffff0000000ffcULL);
86 pte = (tmp & 0x000000ff00000000ULL) >> 28;
87 pte |=(tmp & 0x00000000fffff000ULL);
88 pte |= GPTE_VALID | GPTE_COHERENT;
89
90 writel(pte, agp_bridge->gatt_table+j);
91 readl(agp_bridge->gatt_table+j);
92 }
93 amd64_tlbflush(mem);
94 return 0;
95}
96
97
98
99
100
101
102static struct aper_size_info_32 amd64_aperture_sizes[7] =
103{
104 {32, 8192, 3+(sizeof(long)/8), 0 },
105 {64, 16384, 4+(sizeof(long)/8), 1<<1 },
106 {128, 32768, 5+(sizeof(long)/8), 1<<2 },
107 {256, 65536, 6+(sizeof(long)/8), 1<<1 | 1<<2 },
108 {512, 131072, 7+(sizeof(long)/8), 1<<3 },
109 {1024, 262144, 8+(sizeof(long)/8), 1<<1 | 1<<3},
110 {2048, 524288, 9+(sizeof(long)/8), 1<<2 | 1<<3}
111};
112
113
114
115
116
117
118
119
120static int amd64_fetch_size(void)
121{
122 struct pci_dev *dev;
123 int i;
124 u32 temp;
125 struct aper_size_info_32 *values;
126
127 dev = node_to_amd_nb(0)->misc;
128 if (dev==NULL)
129 return 0;
130
131 pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &temp);
132 temp = (temp & 0xe);
133 values = A_SIZE_32(amd64_aperture_sizes);
134
135 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
136 if (temp == values[i].size_value) {
137 agp_bridge->previous_size =
138 agp_bridge->current_size = (void *) (values + i);
139
140 agp_bridge->aperture_size_idx = i;
141 return values[i].size;
142 }
143 }
144 return 0;
145}
146
147
148
149
150
151static u64 amd64_configure(struct pci_dev *hammer, u64 gatt_table)
152{
153 u64 aperturebase;
154 u32 tmp;
155 u64 aper_base;
156
157
158 pci_read_config_dword(hammer, AMD64_GARTAPERTUREBASE, &tmp);
159 aperturebase = (u64)tmp << 25;
160 aper_base = (aperturebase & PCI_BASE_ADDRESS_MEM_MASK);
161
162 enable_gart_translation(hammer, gatt_table);
163
164 return aper_base;
165}
166
167
168static const struct aper_size_info_32 amd_8151_sizes[7] =
169{
170 {2048, 524288, 9, 0x00000000 },
171 {1024, 262144, 8, 0x00000400 },
172 {512, 131072, 7, 0x00000600 },
173 {256, 65536, 6, 0x00000700 },
174 {128, 32768, 5, 0x00000720 },
175 {64, 16384, 4, 0x00000730 },
176 {32, 8192, 3, 0x00000738 }
177};
178
179static int amd_8151_configure(void)
180{
181 unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real);
182 int i;
183
184 if (!amd_nb_has_feature(AMD_NB_GART))
185 return 0;
186
187
188 for (i = 0; i < amd_nb_num(); i++) {
189 agp_bridge->gart_bus_addr =
190 amd64_configure(node_to_amd_nb(i)->misc, gatt_bus);
191 }
192 amd_flush_garts();
193 return 0;
194}
195
196
197static void amd64_cleanup(void)
198{
199 u32 tmp;
200 int i;
201
202 if (!amd_nb_has_feature(AMD_NB_GART))
203 return;
204
205 for (i = 0; i < amd_nb_num(); i++) {
206 struct pci_dev *dev = node_to_amd_nb(i)->misc;
207
208 pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &tmp);
209 tmp &= ~GARTEN;
210 pci_write_config_dword(dev, AMD64_GARTAPERTURECTL, tmp);
211 }
212}
213
214
215static const struct agp_bridge_driver amd_8151_driver = {
216 .owner = THIS_MODULE,
217 .aperture_sizes = amd_8151_sizes,
218 .size_type = U32_APER_SIZE,
219 .num_aperture_sizes = 7,
220 .needs_scratch_page = true,
221 .configure = amd_8151_configure,
222 .fetch_size = amd64_fetch_size,
223 .cleanup = amd64_cleanup,
224 .tlb_flush = amd64_tlbflush,
225 .mask_memory = agp_generic_mask_memory,
226 .masks = NULL,
227 .agp_enable = agp_generic_enable,
228 .cache_flush = global_cache_flush,
229 .create_gatt_table = agp_generic_create_gatt_table,
230 .free_gatt_table = agp_generic_free_gatt_table,
231 .insert_memory = amd64_insert_memory,
232 .remove_memory = agp_generic_remove_memory,
233 .alloc_by_type = agp_generic_alloc_by_type,
234 .free_by_type = agp_generic_free_by_type,
235 .agp_alloc_page = agp_generic_alloc_page,
236 .agp_alloc_pages = agp_generic_alloc_pages,
237 .agp_destroy_page = agp_generic_destroy_page,
238 .agp_destroy_pages = agp_generic_destroy_pages,
239 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
240};
241
242
243static int agp_aperture_valid(u64 aper, u32 size)
244{
245 if (!aperture_valid(aper, size, 32*1024*1024))
246 return 0;
247
248
249
250
251
252
253 if (!aperture_resource &&
254 !(aperture_resource = request_mem_region(aper, size, "aperture"))) {
255 printk(KERN_ERR PFX "Aperture conflicts with PCI mapping.\n");
256 return 0;
257 }
258 return 1;
259}
260
261
262
263
264
265
266
267
268
269
270static int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp, u16 cap)
271{
272 u64 aper, nb_aper;
273 int order = 0;
274 u32 nb_order, nb_base;
275 u16 apsize;
276
277 pci_read_config_dword(nb, AMD64_GARTAPERTURECTL, &nb_order);
278 nb_order = (nb_order >> 1) & 7;
279 pci_read_config_dword(nb, AMD64_GARTAPERTUREBASE, &nb_base);
280 nb_aper = (u64)nb_base << 25;
281
282
283
284 pci_read_config_word(agp, cap+0x14, &apsize);
285 if (apsize == 0xffff) {
286 if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order))
287 return 0;
288 return -1;
289 }
290
291 apsize &= 0xfff;
292
293 if (apsize & 0xff)
294 apsize |= 0xf00;
295 order = 7 - hweight16(apsize);
296
297 aper = pci_bus_address(agp, AGP_APERTURE_BAR);
298
299
300
301
302
303 if (order >=0 && aper + (32ULL<<(20 + order)) > 0x100000000ULL) {
304 dev_info(&agp->dev, "aperture size %u MB is not right, using settings from NB\n",
305 32 << order);
306 order = nb_order;
307 }
308
309 if (nb_order >= order) {
310 if (agp_aperture_valid(nb_aper, (32*1024*1024)<<nb_order))
311 return 0;
312 }
313
314 dev_info(&agp->dev, "aperture from AGP @ %Lx size %u MB\n",
315 aper, 32 << order);
316 if (order < 0 || !agp_aperture_valid(aper, (32*1024*1024)<<order))
317 return -1;
318
319 gart_set_size_and_enable(nb, order);
320 pci_write_config_dword(nb, AMD64_GARTAPERTUREBASE, aper >> 25);
321
322 return 0;
323}
324
325static int cache_nbs(struct pci_dev *pdev, u32 cap_ptr)
326{
327 int i;
328
329 if (amd_cache_northbridges() < 0)
330 return -ENODEV;
331
332 if (!amd_nb_has_feature(AMD_NB_GART))
333 return -ENODEV;
334
335 i = 0;
336 for (i = 0; i < amd_nb_num(); i++) {
337 struct pci_dev *dev = node_to_amd_nb(i)->misc;
338 if (fix_northbridge(dev, pdev, cap_ptr) < 0) {
339 dev_err(&dev->dev, "no usable aperture found\n");
340#ifdef __x86_64__
341
342 dev_err(&dev->dev, "consider rebooting with iommu=memaper=2 to get a good aperture\n");
343#endif
344 return -1;
345 }
346 }
347 return 0;
348}
349
350
351static void amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge)
352{
353 char *revstring;
354
355 switch (pdev->revision) {
356 case 0x01: revstring="A0"; break;
357 case 0x02: revstring="A1"; break;
358 case 0x11: revstring="B0"; break;
359 case 0x12: revstring="B1"; break;
360 case 0x13: revstring="B2"; break;
361 case 0x14: revstring="B3"; break;
362 default: revstring="??"; break;
363 }
364
365 dev_info(&pdev->dev, "AMD 8151 AGP Bridge rev %s\n", revstring);
366
367
368
369
370
371 if (pdev->revision < 0x13) {
372 dev_info(&pdev->dev, "correcting AGP revision (reports 3.5, is really 3.0)\n");
373 bridge->major_version = 3;
374 bridge->minor_version = 0;
375 }
376}
377
378
379static const struct aper_size_info_32 uli_sizes[7] =
380{
381 {256, 65536, 6, 10},
382 {128, 32768, 5, 9},
383 {64, 16384, 4, 8},
384 {32, 8192, 3, 7},
385 {16, 4096, 2, 6},
386 {8, 2048, 1, 4},
387 {4, 1024, 0, 3}
388};
389static int uli_agp_init(struct pci_dev *pdev)
390{
391 u32 httfea,baseaddr,enuscr;
392 struct pci_dev *dev1;
393 int i, ret;
394 unsigned size = amd64_fetch_size();
395
396 dev_info(&pdev->dev, "setting up ULi AGP\n");
397 dev1 = pci_get_slot (pdev->bus,PCI_DEVFN(0,0));
398 if (dev1 == NULL) {
399 dev_info(&pdev->dev, "can't find ULi secondary device\n");
400 return -ENODEV;
401 }
402
403 for (i = 0; i < ARRAY_SIZE(uli_sizes); i++)
404 if (uli_sizes[i].size == size)
405 break;
406
407 if (i == ARRAY_SIZE(uli_sizes)) {
408 dev_info(&pdev->dev, "no ULi size found for %d\n", size);
409 ret = -ENODEV;
410 goto put;
411 }
412
413
414 pci_read_config_dword (node_to_amd_nb(0)->misc, AMD64_GARTAPERTUREBASE,
415 &httfea);
416
417
418 if ((httfea & 0x7fff) >> (32 - 25)) {
419 ret = -ENODEV;
420 goto put;
421 }
422
423 httfea = (httfea& 0x7fff) << 25;
424
425 pci_read_config_dword(pdev, ULI_X86_64_BASE_ADDR, &baseaddr);
426 baseaddr&= ~PCI_BASE_ADDRESS_MEM_MASK;
427 baseaddr|= httfea;
428 pci_write_config_dword(pdev, ULI_X86_64_BASE_ADDR, baseaddr);
429
430 enuscr= httfea+ (size * 1024 * 1024) - 1;
431 pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea);
432 pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr);
433 ret = 0;
434put:
435 pci_dev_put(dev1);
436 return ret;
437}
438
439
440static const struct aper_size_info_32 nforce3_sizes[5] =
441{
442 {512, 131072, 7, 0x00000000 },
443 {256, 65536, 6, 0x00000008 },
444 {128, 32768, 5, 0x0000000C },
445 {64, 16384, 4, 0x0000000E },
446 {32, 8192, 3, 0x0000000F }
447};
448
449
450
451static int nforce3_agp_init(struct pci_dev *pdev)
452{
453 u32 tmp, apbase, apbar, aplimit;
454 struct pci_dev *dev1;
455 int i, ret;
456 unsigned size = amd64_fetch_size();
457
458 dev_info(&pdev->dev, "setting up Nforce3 AGP\n");
459
460 dev1 = pci_get_slot(pdev->bus, PCI_DEVFN(11, 0));
461 if (dev1 == NULL) {
462 dev_info(&pdev->dev, "can't find Nforce3 secondary device\n");
463 return -ENODEV;
464 }
465
466 for (i = 0; i < ARRAY_SIZE(nforce3_sizes); i++)
467 if (nforce3_sizes[i].size == size)
468 break;
469
470 if (i == ARRAY_SIZE(nforce3_sizes)) {
471 dev_info(&pdev->dev, "no NForce3 size found for %d\n", size);
472 ret = -ENODEV;
473 goto put;
474 }
475
476 pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp);
477 tmp &= ~(0xf);
478 tmp |= nforce3_sizes[i].size_value;
479 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, tmp);
480
481
482 pci_read_config_dword (node_to_amd_nb(0)->misc, AMD64_GARTAPERTUREBASE,
483 &apbase);
484
485
486 if ( (apbase & 0x7fff) >> (32 - 25) ) {
487 dev_info(&pdev->dev, "aperture base > 4G\n");
488 ret = -ENODEV;
489 goto put;
490 }
491
492 apbase = (apbase & 0x7fff) << 25;
493
494 pci_read_config_dword(pdev, NVIDIA_X86_64_0_APBASE, &apbar);
495 apbar &= ~PCI_BASE_ADDRESS_MEM_MASK;
496 apbar |= apbase;
497 pci_write_config_dword(pdev, NVIDIA_X86_64_0_APBASE, apbar);
498
499 aplimit = apbase + (size * 1024 * 1024) - 1;
500 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE1, apbase);
501 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT1, aplimit);
502 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase);
503 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit);
504
505 ret = 0;
506put:
507 pci_dev_put(dev1);
508
509 return ret;
510}
511
512static int agp_amd64_probe(struct pci_dev *pdev,
513 const struct pci_device_id *ent)
514{
515 struct agp_bridge_data *bridge;
516 u8 cap_ptr;
517 int err;
518
519
520 if (agp_bridges_found)
521 return -ENODEV;
522
523 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
524 if (!cap_ptr)
525 return -ENODEV;
526
527
528
529 bridge = agp_alloc_bridge();
530 if (!bridge)
531 return -ENOMEM;
532
533 if (pdev->vendor == PCI_VENDOR_ID_AMD &&
534 pdev->device == PCI_DEVICE_ID_AMD_8151_0) {
535 amd8151_init(pdev, bridge);
536 } else {
537 dev_info(&pdev->dev, "AGP bridge [%04x/%04x]\n",
538 pdev->vendor, pdev->device);
539 }
540
541 bridge->driver = &amd_8151_driver;
542 bridge->dev = pdev;
543 bridge->capndx = cap_ptr;
544
545
546 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
547
548 if (cache_nbs(pdev, cap_ptr) == -1) {
549 agp_put_bridge(bridge);
550 return -ENODEV;
551 }
552
553 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) {
554 int ret = nforce3_agp_init(pdev);
555 if (ret) {
556 agp_put_bridge(bridge);
557 return ret;
558 }
559 }
560
561 if (pdev->vendor == PCI_VENDOR_ID_AL) {
562 int ret = uli_agp_init(pdev);
563 if (ret) {
564 agp_put_bridge(bridge);
565 return ret;
566 }
567 }
568
569 pci_set_drvdata(pdev, bridge);
570 err = agp_add_bridge(bridge);
571 if (err < 0)
572 return err;
573
574 agp_bridges_found++;
575 return 0;
576}
577
578static void agp_amd64_remove(struct pci_dev *pdev)
579{
580 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
581
582 release_mem_region(virt_to_phys(bridge->gatt_table_real),
583 amd64_aperture_sizes[bridge->aperture_size_idx].size);
584 agp_remove_bridge(bridge);
585 agp_put_bridge(bridge);
586
587 agp_bridges_found--;
588}
589
590#ifdef CONFIG_PM
591
592static int agp_amd64_suspend(struct pci_dev *pdev, pm_message_t state)
593{
594 pci_save_state(pdev);
595 pci_set_power_state(pdev, pci_choose_state(pdev, state));
596
597 return 0;
598}
599
600static int agp_amd64_resume(struct pci_dev *pdev)
601{
602 pci_set_power_state(pdev, PCI_D0);
603 pci_restore_state(pdev);
604
605 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA)
606 nforce3_agp_init(pdev);
607
608 return amd_8151_configure();
609}
610
611#endif
612
613static const struct pci_device_id agp_amd64_pci_table[] = {
614 {
615 .class = (PCI_CLASS_BRIDGE_HOST << 8),
616 .class_mask = ~0,
617 .vendor = PCI_VENDOR_ID_AMD,
618 .device = PCI_DEVICE_ID_AMD_8151_0,
619 .subvendor = PCI_ANY_ID,
620 .subdevice = PCI_ANY_ID,
621 },
622
623 {
624 .class = (PCI_CLASS_BRIDGE_HOST << 8),
625 .class_mask = ~0,
626 .vendor = PCI_VENDOR_ID_AL,
627 .device = PCI_DEVICE_ID_AL_M1689,
628 .subvendor = PCI_ANY_ID,
629 .subdevice = PCI_ANY_ID,
630 },
631
632 {
633 .class = (PCI_CLASS_BRIDGE_HOST << 8),
634 .class_mask = ~0,
635 .vendor = PCI_VENDOR_ID_VIA,
636 .device = PCI_DEVICE_ID_VIA_K8T800PRO_0,
637 .subvendor = PCI_ANY_ID,
638 .subdevice = PCI_ANY_ID,
639 },
640
641 {
642 .class = (PCI_CLASS_BRIDGE_HOST << 8),
643 .class_mask = ~0,
644 .vendor = PCI_VENDOR_ID_VIA,
645 .device = PCI_DEVICE_ID_VIA_8385_0,
646 .subvendor = PCI_ANY_ID,
647 .subdevice = PCI_ANY_ID,
648 },
649
650 {
651 .class = (PCI_CLASS_BRIDGE_HOST << 8),
652 .class_mask = ~0,
653 .vendor = PCI_VENDOR_ID_VIA,
654 .device = PCI_DEVICE_ID_VIA_8380_0,
655 .subvendor = PCI_ANY_ID,
656 .subdevice = PCI_ANY_ID,
657 },
658
659 {
660 .class = (PCI_CLASS_BRIDGE_HOST << 8),
661 .class_mask = ~0,
662 .vendor = PCI_VENDOR_ID_VIA,
663 .device = PCI_DEVICE_ID_VIA_VT3336,
664 .subvendor = PCI_ANY_ID,
665 .subdevice = PCI_ANY_ID,
666 },
667
668 {
669 .class = (PCI_CLASS_BRIDGE_HOST << 8),
670 .class_mask = ~0,
671 .vendor = PCI_VENDOR_ID_VIA,
672 .device = PCI_DEVICE_ID_VIA_3238_0,
673 .subvendor = PCI_ANY_ID,
674 .subdevice = PCI_ANY_ID,
675 },
676
677 {
678 .class = (PCI_CLASS_BRIDGE_HOST << 8),
679 .class_mask = ~0,
680 .vendor = PCI_VENDOR_ID_VIA,
681 .device = PCI_DEVICE_ID_VIA_838X_1,
682 .subvendor = PCI_ANY_ID,
683 .subdevice = PCI_ANY_ID,
684 },
685
686 {
687 .class = (PCI_CLASS_BRIDGE_HOST << 8),
688 .class_mask = ~0,
689 .vendor = PCI_VENDOR_ID_NVIDIA,
690 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3,
691 .subvendor = PCI_ANY_ID,
692 .subdevice = PCI_ANY_ID,
693 },
694 {
695 .class = (PCI_CLASS_BRIDGE_HOST << 8),
696 .class_mask = ~0,
697 .vendor = PCI_VENDOR_ID_NVIDIA,
698 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S,
699 .subvendor = PCI_ANY_ID,
700 .subdevice = PCI_ANY_ID,
701 },
702
703 {
704 .class = (PCI_CLASS_BRIDGE_HOST << 8),
705 .class_mask = ~0,
706 .vendor = PCI_VENDOR_ID_SI,
707 .device = PCI_DEVICE_ID_SI_755,
708 .subvendor = PCI_ANY_ID,
709 .subdevice = PCI_ANY_ID,
710 },
711
712 {
713 .class = (PCI_CLASS_BRIDGE_HOST << 8),
714 .class_mask = ~0,
715 .vendor = PCI_VENDOR_ID_SI,
716 .device = PCI_DEVICE_ID_SI_760,
717 .subvendor = PCI_ANY_ID,
718 .subdevice = PCI_ANY_ID,
719 },
720
721 {
722 .class = (PCI_CLASS_BRIDGE_HOST << 8),
723 .class_mask = ~0,
724 .vendor = PCI_VENDOR_ID_AL,
725 .device = 0x1695,
726 .subvendor = PCI_ANY_ID,
727 .subdevice = PCI_ANY_ID,
728 },
729
730 { }
731};
732
733MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table);
734
735static const struct pci_device_id agp_amd64_pci_promisc_table[] = {
736 { PCI_DEVICE_CLASS(0, 0) },
737 { }
738};
739
740static struct pci_driver agp_amd64_pci_driver = {
741 .name = "agpgart-amd64",
742 .id_table = agp_amd64_pci_table,
743 .probe = agp_amd64_probe,
744 .remove = agp_amd64_remove,
745#ifdef CONFIG_PM
746 .suspend = agp_amd64_suspend,
747 .resume = agp_amd64_resume,
748#endif
749};
750
751
752
753int __init agp_amd64_init(void)
754{
755 int err = 0;
756
757 if (agp_off)
758 return -EINVAL;
759
760 err = pci_register_driver(&agp_amd64_pci_driver);
761 if (err < 0)
762 return err;
763
764 if (agp_bridges_found == 0) {
765 if (!agp_try_unsupported && !agp_try_unsupported_boot) {
766 printk(KERN_INFO PFX "No supported AGP bridge found.\n");
767#ifdef MODULE
768 printk(KERN_INFO PFX "You can try agp_try_unsupported=1\n");
769#else
770 printk(KERN_INFO PFX "You can boot with agp=try_unsupported\n");
771#endif
772 pci_unregister_driver(&agp_amd64_pci_driver);
773 return -ENODEV;
774 }
775
776
777 if (!pci_dev_present(amd_nb_misc_ids)) {
778 pci_unregister_driver(&agp_amd64_pci_driver);
779 return -ENODEV;
780 }
781
782
783 agp_amd64_pci_driver.id_table = agp_amd64_pci_promisc_table;
784 err = driver_attach(&agp_amd64_pci_driver.driver);
785 if (err == 0 && agp_bridges_found == 0) {
786 pci_unregister_driver(&agp_amd64_pci_driver);
787 err = -ENODEV;
788 }
789 }
790 return err;
791}
792
793static int __init agp_amd64_mod_init(void)
794{
795#ifndef MODULE
796 if (gart_iommu_aperture)
797 return agp_bridges_found ? 0 : -ENODEV;
798#endif
799 return agp_amd64_init();
800}
801
802static void __exit agp_amd64_cleanup(void)
803{
804#ifndef MODULE
805 if (gart_iommu_aperture)
806 return;
807#endif
808 if (aperture_resource)
809 release_resource(aperture_resource);
810 pci_unregister_driver(&agp_amd64_pci_driver);
811}
812
813module_init(agp_amd64_mod_init);
814module_exit(agp_amd64_cleanup);
815
816MODULE_AUTHOR("Dave Jones, Andi Kleen");
817module_param(agp_try_unsupported, bool, 0);
818MODULE_LICENSE("GPL");
819
