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[TG3]: Set minimal hw interrupt mitigation.
[linux-2.6/verdex.git] / drivers / char / agp / amd64-agp.c
blob399c042f68f04f0634ae7375f3917d1f1475edee
1 /*
2 * Copyright 2001-2003 SuSE Labs.
3 * Distributed under the GNU public license, v2.
4 *
5 * This is a GART driver for the AMD Opteron/Athlon64 on-CPU northbridge.
6 * It also includes support for the AMD 8151 AGP bridge,
7 * although it doesn't actually do much, as all the real
8 * work is done in the northbridge(s).
9 */
10
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/pci.h>
14 #include <linux/init.h>
15 #include <linux/agp_backend.h>
16 #include "agp.h"
17
18 /* Will need to be increased if AMD64 ever goes >8-way. */
19 #define MAX_HAMMER_GARTS 8
20
21 /* PTE bits. */
22 #define GPTE_VALID 1
23 #define GPTE_COHERENT 2
24
25 /* Aperture control register bits. */
26 #define GARTEN (1<<0)
27 #define DISGARTCPU (1<<4)
28 #define DISGARTIO (1<<5)
29
30 /* GART cache control register bits. */
31 #define INVGART (1<<0)
32 #define GARTPTEERR (1<<1)
33
34 /* K8 On-cpu GART registers */
35 #define AMD64_GARTAPERTURECTL 0x90
36 #define AMD64_GARTAPERTUREBASE 0x94
37 #define AMD64_GARTTABLEBASE 0x98
38 #define AMD64_GARTCACHECTL 0x9c
39 #define AMD64_GARTEN (1<<0)
40
41 /* NVIDIA K8 registers */
42 #define NVIDIA_X86_64_0_APBASE 0x10
43 #define NVIDIA_X86_64_1_APBASE1 0x50
44 #define NVIDIA_X86_64_1_APLIMIT1 0x54
45 #define NVIDIA_X86_64_1_APSIZE 0xa8
46 #define NVIDIA_X86_64_1_APBASE2 0xd8
47 #define NVIDIA_X86_64_1_APLIMIT2 0xdc
48
49 /* ULi K8 registers */
50 #define ULI_X86_64_BASE_ADDR 0x10
51 #define ULI_X86_64_HTT_FEA_REG 0x50
52 #define ULI_X86_64_ENU_SCR_REG 0x54
53
54 static int nr_garts;
55 static struct pci_dev * hammers[MAX_HAMMER_GARTS];
56
57 static struct resource *aperture_resource;
58 static int __initdata agp_try_unsupported;
59
60 static int gart_iterator;
61 #define for_each_nb() for(gart_iterator=0;gart_iterator<nr_garts;gart_iterator++)
62
63 static void flush_amd64_tlb(struct pci_dev *dev)
64 {
65 u32 tmp;
66
67 pci_read_config_dword (dev, AMD64_GARTCACHECTL, &tmp);
68 tmp |= INVGART;
69 pci_write_config_dword (dev, AMD64_GARTCACHECTL, tmp);
70 }
71
72 static void amd64_tlbflush(struct agp_memory *temp)
73 {
74 for_each_nb()
75 flush_amd64_tlb(hammers[gart_iterator]);
76 }
77
78 static int amd64_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
79 {
80 int i, j, num_entries;
81 long long tmp;
82 u32 pte;
83
84 num_entries = agp_num_entries();
85
86 if (type != 0 || mem->type != 0)
87 return -EINVAL;
88
89 /* Make sure we can fit the range in the gatt table. */
90 /* FIXME: could wrap */
91 if (((unsigned long)pg_start + mem->page_count) > num_entries)
92 return -EINVAL;
93
94 j = pg_start;
95
96 /* gatt table should be empty. */
97 while (j < (pg_start + mem->page_count)) {
98 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j)))
99 return -EBUSY;
100 j++;
101 }
102
103 if (mem->is_flushed == FALSE) {
104 global_cache_flush();
105 mem->is_flushed = TRUE;
106 }
107
108 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
109 tmp = agp_bridge->driver->mask_memory(agp_bridge,
110 mem->memory[i], mem->type);
111
112 BUG_ON(tmp & 0xffffff0000000ffcULL);
113 pte = (tmp & 0x000000ff00000000ULL) >> 28;
114 pte |=(tmp & 0x00000000fffff000ULL);
115 pte |= GPTE_VALID | GPTE_COHERENT;
116
117 writel(pte, agp_bridge->gatt_table+j);
118 readl(agp_bridge->gatt_table+j); /* PCI Posting. */
119 }
120 amd64_tlbflush(mem);
121 return 0;
122 }
123
124 /*
125 * This hack alters the order element according
126 * to the size of a long. It sucks. I totally disown this, even
127 * though it does appear to work for the most part.
128 */
129 static struct aper_size_info_32 amd64_aperture_sizes[7] =
130 {
131 {32, 8192, 3+(sizeof(long)/8), 0 },
132 {64, 16384, 4+(sizeof(long)/8), 1<<1 },
133 {128, 32768, 5+(sizeof(long)/8), 1<<2 },
134 {256, 65536, 6+(sizeof(long)/8), 1<<1 | 1<<2 },
135 {512, 131072, 7+(sizeof(long)/8), 1<<3 },
136 {1024, 262144, 8+(sizeof(long)/8), 1<<1 | 1<<3},
137 {2048, 524288, 9+(sizeof(long)/8), 1<<2 | 1<<3}
138 };
139
140
141 /*
142 * Get the current Aperture size from the x86-64.
143 * Note, that there may be multiple x86-64's, but we just return
144 * the value from the first one we find. The set_size functions
145 * keep the rest coherent anyway. Or at least should do.
146 */
147 static int amd64_fetch_size(void)
148 {
149 struct pci_dev *dev;
150 int i;
151 u32 temp;
152 struct aper_size_info_32 *values;
153
154 dev = hammers[0];
155 if (dev==NULL)
156 return 0;
157
158 pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &temp);
159 temp = (temp & 0xe);
160 values = A_SIZE_32(amd64_aperture_sizes);
161
162 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
163 if (temp == values[i].size_value) {
164 agp_bridge->previous_size =
165 agp_bridge->current_size = (void *) (values + i);
166
167 agp_bridge->aperture_size_idx = i;
168 return values[i].size;
169 }
170 }
171 return 0;
172 }
173
174 /*
175 * In a multiprocessor x86-64 system, this function gets
176 * called once for each CPU.
177 */
178 static u64 amd64_configure (struct pci_dev *hammer, u64 gatt_table)
179 {
180 u64 aperturebase;
181 u32 tmp;
182 u64 addr, aper_base;
183
184 /* Address to map to */
185 pci_read_config_dword (hammer, AMD64_GARTAPERTUREBASE, &tmp);
186 aperturebase = tmp << 25;
187 aper_base = (aperturebase & PCI_BASE_ADDRESS_MEM_MASK);
188
189 /* address of the mappings table */
190 addr = (u64) gatt_table;
191 addr >>= 12;
192 tmp = (u32) addr<<4;
193 tmp &= ~0xf;
194 pci_write_config_dword (hammer, AMD64_GARTTABLEBASE, tmp);
195
196 /* Enable GART translation for this hammer. */
197 pci_read_config_dword(hammer, AMD64_GARTAPERTURECTL, &tmp);
198 tmp |= GARTEN;
199 tmp &= ~(DISGARTCPU | DISGARTIO);
200 pci_write_config_dword(hammer, AMD64_GARTAPERTURECTL, tmp);
201
202 /* keep CPU's coherent. */
203 flush_amd64_tlb (hammer);
204
205 return aper_base;
206 }
207
208
209 static struct aper_size_info_32 amd_8151_sizes[7] =
210 {
211 {2048, 524288, 9, 0x00000000 }, /* 0 0 0 0 0 0 */
212 {1024, 262144, 8, 0x00000400 }, /* 1 0 0 0 0 0 */
213 {512, 131072, 7, 0x00000600 }, /* 1 1 0 0 0 0 */
214 {256, 65536, 6, 0x00000700 }, /* 1 1 1 0 0 0 */
215 {128, 32768, 5, 0x00000720 }, /* 1 1 1 1 0 0 */
216 {64, 16384, 4, 0x00000730 }, /* 1 1 1 1 1 0 */
217 {32, 8192, 3, 0x00000738 } /* 1 1 1 1 1 1 */
218 };
219
220 static int amd_8151_configure(void)
221 {
222 unsigned long gatt_bus = virt_to_phys(agp_bridge->gatt_table_real);
223
224 /* Configure AGP regs in each x86-64 host bridge. */
225 for_each_nb() {
226 agp_bridge->gart_bus_addr =
227 amd64_configure(hammers[gart_iterator],gatt_bus);
228 }
229 return 0;
230 }
231
232
233 static void amd64_cleanup(void)
234 {
235 u32 tmp;
236
237 for_each_nb() {
238 /* disable gart translation */
239 pci_read_config_dword (hammers[gart_iterator], AMD64_GARTAPERTURECTL, &tmp);
240 tmp &= ~AMD64_GARTEN;
241 pci_write_config_dword (hammers[gart_iterator], AMD64_GARTAPERTURECTL, tmp);
242 }
243 }
244
245
246 static struct agp_bridge_driver amd_8151_driver = {
247 .owner = THIS_MODULE,
248 .aperture_sizes = amd_8151_sizes,
249 .size_type = U32_APER_SIZE,
250 .num_aperture_sizes = 7,
251 .configure = amd_8151_configure,
252 .fetch_size = amd64_fetch_size,
253 .cleanup = amd64_cleanup,
254 .tlb_flush = amd64_tlbflush,
255 .mask_memory = agp_generic_mask_memory,
256 .masks = NULL,
257 .agp_enable = agp_generic_enable,
258 .cache_flush = global_cache_flush,
259 .create_gatt_table = agp_generic_create_gatt_table,
260 .free_gatt_table = agp_generic_free_gatt_table,
261 .insert_memory = amd64_insert_memory,
262 .remove_memory = agp_generic_remove_memory,
263 .alloc_by_type = agp_generic_alloc_by_type,
264 .free_by_type = agp_generic_free_by_type,
265 .agp_alloc_page = agp_generic_alloc_page,
266 .agp_destroy_page = agp_generic_destroy_page,
267 };
268
269 /* Some basic sanity checks for the aperture. */
270 static int __devinit aperture_valid(u64 aper, u32 size)
271 {
272 u32 pfn, c;
273 if (aper == 0) {
274 printk(KERN_ERR PFX "No aperture\n");
275 return 0;
276 }
277 if (size < 32*1024*1024) {
278 printk(KERN_ERR PFX "Aperture too small (%d MB)\n", size>>20);
279 return 0;
280 }
281 if (aper + size > 0xffffffff) {
282 printk(KERN_ERR PFX "Aperture out of bounds\n");
283 return 0;
284 }
285 pfn = aper >> PAGE_SHIFT;
286 for (c = 0; c < size/PAGE_SIZE; c++) {
287 if (!pfn_valid(pfn + c))
288 break;
289 if (!PageReserved(pfn_to_page(pfn + c))) {
290 printk(KERN_ERR PFX "Aperture pointing to RAM\n");
291 return 0;
292 }
293 }
294
295 /* Request the Aperture. This catches cases when someone else
296 already put a mapping in there - happens with some very broken BIOS
297
298 Maybe better to use pci_assign_resource/pci_enable_device instead
299 trusting the bridges? */
300 if (!aperture_resource &&
301 !(aperture_resource = request_mem_region(aper, size, "aperture"))) {
302 printk(KERN_ERR PFX "Aperture conflicts with PCI mapping.\n");
303 return 0;
304 }
305 return 1;
306 }
307
308 /*
309 * W*s centric BIOS sometimes only set up the aperture in the AGP
310 * bridge, not the northbridge. On AMD64 this is handled early
311 * in aperture.c, but when GART_IOMMU is not enabled or we run
312 * on a 32bit kernel this needs to be redone.
313 * Unfortunately it is impossible to fix the aperture here because it's too late
314 * to allocate that much memory. But at least error out cleanly instead of
315 * crashing.
316 */
317 static __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp,
318 u16 cap)
319 {
320 u32 aper_low, aper_hi;
321 u64 aper, nb_aper;
322 int order = 0;
323 u32 nb_order, nb_base;
324 u16 apsize;
325
326 pci_read_config_dword(nb, 0x90, &nb_order);
327 nb_order = (nb_order >> 1) & 7;
328 pci_read_config_dword(nb, 0x94, &nb_base);
329 nb_aper = nb_base << 25;
330 if (aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) {
331 return 0;
332 }
333
334 /* Northbridge seems to contain crap. Try the AGP bridge. */
335
336 pci_read_config_word(agp, cap+0x14, &apsize);
337 if (apsize == 0xffff)
338 return -1;
339
340 apsize &= 0xfff;
341 /* Some BIOS use weird encodings not in the AGPv3 table. */
342 if (apsize & 0xff)
343 apsize |= 0xf00;
344 order = 7 - hweight16(apsize);
345
346 pci_read_config_dword(agp, 0x10, &aper_low);
347 pci_read_config_dword(agp, 0x14, &aper_hi);
348 aper = (aper_low & ~((1<<22)-1)) | ((u64)aper_hi << 32);
349 printk(KERN_INFO PFX "Aperture from AGP @ %Lx size %u MB\n", aper, 32 << order);
350 if (order < 0 || !aperture_valid(aper, (32*1024*1024)<<order))
351 return -1;
352
353 pci_write_config_dword(nb, 0x90, order << 1);
354 pci_write_config_dword(nb, 0x94, aper >> 25);
355
356 return 0;
357 }
358
359 static __devinit int cache_nbs (struct pci_dev *pdev, u32 cap_ptr)
360 {
361 struct pci_dev *loop_dev = NULL;
362 int i = 0;
363
364 /* cache pci_devs of northbridges. */
365 while ((loop_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1103, loop_dev))
366 != NULL) {
367 if (i == MAX_HAMMER_GARTS) {
368 printk(KERN_ERR PFX "Too many northbridges for AGP\n");
369 return -1;
370 }
371 if (fix_northbridge(loop_dev, pdev, cap_ptr) < 0) {
372 printk(KERN_ERR PFX "No usable aperture found.\n");
373 #ifdef __x86_64__
374 /* should port this to i386 */
375 printk(KERN_ERR PFX "Consider rebooting with iommu=memaper=2 to get a good aperture.\n");
376 #endif
377 return -1;
378 }
379 hammers[i++] = loop_dev;
380 }
381 nr_garts = i;
382 return i == 0 ? -1 : 0;
383 }
384
385 /* Handle AMD 8151 quirks */
386 static void __devinit amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge)
387 {
388 char *revstring;
389 u8 rev_id;
390
391 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
392 switch (rev_id) {
393 case 0x01: revstring="A0"; break;
394 case 0x02: revstring="A1"; break;
395 case 0x11: revstring="B0"; break;
396 case 0x12: revstring="B1"; break;
397 case 0x13: revstring="B2"; break;
398 case 0x14: revstring="B3"; break;
399 default: revstring="??"; break;
400 }
401
402 printk (KERN_INFO PFX "Detected AMD 8151 AGP Bridge rev %s\n", revstring);
403
404 /*
405 * Work around errata.
406 * Chips before B2 stepping incorrectly reporting v3.5
407 */
408 if (rev_id < 0x13) {
409 printk (KERN_INFO PFX "Correcting AGP revision (reports 3.5, is really 3.0)\n");
410 bridge->major_version = 3;
411 bridge->minor_version = 0;
412 }
413 }
414
415
416 static struct aper_size_info_32 uli_sizes[7] =
417 {
418 {256, 65536, 6, 10},
419 {128, 32768, 5, 9},
420 {64, 16384, 4, 8},
421 {32, 8192, 3, 7},
422 {16, 4096, 2, 6},
423 {8, 2048, 1, 4},
424 {4, 1024, 0, 3}
425 };
426 static int __devinit uli_agp_init(struct pci_dev *pdev)
427 {
428 u32 httfea,baseaddr,enuscr;
429 struct pci_dev *dev1;
430 int i;
431 unsigned size = amd64_fetch_size();
432 printk(KERN_INFO "Setting up ULi AGP. \n");
433 dev1 = pci_find_slot ((unsigned int)pdev->bus->number,PCI_DEVFN(0,0));
434 if (dev1 == NULL) {
435 printk(KERN_INFO PFX "Detected a ULi chipset, "
436 "but could not fine the secondary device.\n");
437 return -ENODEV;
438 }
439
440 for (i = 0; i < ARRAY_SIZE(uli_sizes); i++)
441 if (uli_sizes[i].size == size)
442 break;
443
444 if (i == ARRAY_SIZE(uli_sizes)) {
445 printk(KERN_INFO PFX "No ULi size found for %d\n", size);
446 return -ENODEV;
447 }
448
449 /* shadow x86-64 registers into ULi registers */
450 pci_read_config_dword (hammers[0], AMD64_GARTAPERTUREBASE, &httfea);
451
452 /* if x86-64 aperture base is beyond 4G, exit here */
453 if ((httfea & 0x7fff) >> (32 - 25))
454 return -ENODEV;
455
456 httfea = (httfea& 0x7fff) << 25;
457
458 pci_read_config_dword(pdev, ULI_X86_64_BASE_ADDR, &baseaddr);
459 baseaddr&= ~PCI_BASE_ADDRESS_MEM_MASK;
460 baseaddr|= httfea;
461 pci_write_config_dword(pdev, ULI_X86_64_BASE_ADDR, baseaddr);
462
463 enuscr= httfea+ (size * 1024 * 1024) - 1;
464 pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea);
465 pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr);
466 return 0;
467 }
468
469
470 static struct aper_size_info_32 nforce3_sizes[5] =
471 {
472 {512, 131072, 7, 0x00000000 },
473 {256, 65536, 6, 0x00000008 },
474 {128, 32768, 5, 0x0000000C },
475 {64, 16384, 4, 0x0000000E },
476 {32, 8192, 3, 0x0000000F }
477 };
478
479 /* Handle shadow device of the Nvidia NForce3 */
480 /* CHECK-ME original 2.4 version set up some IORRs. Check if that is needed. */
481 static int __devinit nforce3_agp_init(struct pci_dev *pdev)
482 {
483 u32 tmp, apbase, apbar, aplimit;
484 struct pci_dev *dev1;
485 int i;
486 unsigned size = amd64_fetch_size();
487
488 printk(KERN_INFO PFX "Setting up Nforce3 AGP.\n");
489
490 dev1 = pci_find_slot((unsigned int)pdev->bus->number, PCI_DEVFN(11, 0));
491 if (dev1 == NULL) {
492 printk(KERN_INFO PFX "agpgart: Detected an NVIDIA "
493 "nForce3 chipset, but could not find "
494 "the secondary device.\n");
495 return -ENODEV;
496 }
497
498 for (i = 0; i < ARRAY_SIZE(nforce3_sizes); i++)
499 if (nforce3_sizes[i].size == size)
500 break;
501
502 if (i == ARRAY_SIZE(nforce3_sizes)) {
503 printk(KERN_INFO PFX "No NForce3 size found for %d\n", size);
504 return -ENODEV;
505 }
506
507 pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp);
508 tmp &= ~(0xf);
509 tmp |= nforce3_sizes[i].size_value;
510 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, tmp);
511
512 /* shadow x86-64 registers into NVIDIA registers */
513 pci_read_config_dword (hammers[0], AMD64_GARTAPERTUREBASE, &apbase);
514
515 /* if x86-64 aperture base is beyond 4G, exit here */
516 if ( (apbase & 0x7fff) >> (32 - 25) )
517 return -ENODEV;
518
519 apbase = (apbase & 0x7fff) << 25;
520
521 pci_read_config_dword(pdev, NVIDIA_X86_64_0_APBASE, &apbar);
522 apbar &= ~PCI_BASE_ADDRESS_MEM_MASK;
523 apbar |= apbase;
524 pci_write_config_dword(pdev, NVIDIA_X86_64_0_APBASE, apbar);
525
526 aplimit = apbase + (size * 1024 * 1024) - 1;
527 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE1, apbase);
528 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT1, aplimit);
529 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase);
530 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit);
531
532 return 0;
533 }
534
535 static int __devinit agp_amd64_probe(struct pci_dev *pdev,
536 const struct pci_device_id *ent)
537 {
538 struct agp_bridge_data *bridge;
539 u8 cap_ptr;
540
541 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
542 if (!cap_ptr)
543 return -ENODEV;
544
545 /* Could check for AGPv3 here */
546
547 bridge = agp_alloc_bridge();
548 if (!bridge)
549 return -ENOMEM;
550
551 if (pdev->vendor == PCI_VENDOR_ID_AMD &&
552 pdev->device == PCI_DEVICE_ID_AMD_8151_0) {
553 amd8151_init(pdev, bridge);
554 } else {
555 printk(KERN_INFO PFX "Detected AGP bridge %x\n", pdev->devfn);
556 }
557
558 bridge->driver = &amd_8151_driver;
559 bridge->dev = pdev;
560 bridge->capndx = cap_ptr;
561
562 /* Fill in the mode register */
563 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
564
565 if (cache_nbs(pdev, cap_ptr) == -1) {
566 agp_put_bridge(bridge);
567 return -ENODEV;
568 }
569
570 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) {
571 int ret = nforce3_agp_init(pdev);
572 if (ret) {
573 agp_put_bridge(bridge);
574 return ret;
575 }
576 }
577
578 if (pdev->vendor == PCI_VENDOR_ID_AL) {
579 int ret = uli_agp_init(pdev);
580 if (ret) {
581 agp_put_bridge(bridge);
582 return ret;
583 }
584 }
585
586 pci_set_drvdata(pdev, bridge);
587 return agp_add_bridge(bridge);
588 }
589
590 static void __devexit agp_amd64_remove(struct pci_dev *pdev)
591 {
592 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
593
594 release_mem_region(virt_to_phys(bridge->gatt_table_real),
595 amd64_aperture_sizes[bridge->aperture_size_idx].size);
596 agp_remove_bridge(bridge);
597 agp_put_bridge(bridge);
598 }
599
600 static struct pci_device_id agp_amd64_pci_table[] = {
601 {
602 .class = (PCI_CLASS_BRIDGE_HOST << 8),
603 .class_mask = ~0,
604 .vendor = PCI_VENDOR_ID_AMD,
605 .device = PCI_DEVICE_ID_AMD_8151_0,
606 .subvendor = PCI_ANY_ID,
607 .subdevice = PCI_ANY_ID,
608 },
609 /* ULi M1689 */
610 {
611 .class = (PCI_CLASS_BRIDGE_HOST << 8),
612 .class_mask = ~0,
613 .vendor = PCI_VENDOR_ID_AL,
614 .device = PCI_DEVICE_ID_AL_M1689,
615 .subvendor = PCI_ANY_ID,
616 .subdevice = PCI_ANY_ID,
617 },
618 /* VIA K8T800Pro */
619 {
620 .class = (PCI_CLASS_BRIDGE_HOST << 8),
621 .class_mask = ~0,
622 .vendor = PCI_VENDOR_ID_VIA,
623 .device = PCI_DEVICE_ID_VIA_K8T800PRO_0,
624 .subvendor = PCI_ANY_ID,
625 .subdevice = PCI_ANY_ID,
626 },
627 /* VIA K8T800 */
628 {
629 .class = (PCI_CLASS_BRIDGE_HOST << 8),
630 .class_mask = ~0,
631 .vendor = PCI_VENDOR_ID_VIA,
632 .device = PCI_DEVICE_ID_VIA_8385_0,
633 .subvendor = PCI_ANY_ID,
634 .subdevice = PCI_ANY_ID,
635 },
636 /* VIA K8M800 / K8N800 */
637 {
638 .class = (PCI_CLASS_BRIDGE_HOST << 8),
639 .class_mask = ~0,
640 .vendor = PCI_VENDOR_ID_VIA,
641 .device = PCI_DEVICE_ID_VIA_8380_0,
642 .subvendor = PCI_ANY_ID,
643 .subdevice = PCI_ANY_ID,
644 },
645 /* VIA K8T890 */
646 {
647 .class = (PCI_CLASS_BRIDGE_HOST << 8),
648 .class_mask = ~0,
649 .vendor = PCI_VENDOR_ID_VIA,
650 .device = PCI_DEVICE_ID_VIA_3238_0,
651 .subvendor = PCI_ANY_ID,
652 .subdevice = PCI_ANY_ID,
653 },
654 /* VIA K8T800/K8M800/K8N800 */
655 {
656 .class = (PCI_CLASS_BRIDGE_HOST << 8),
657 .class_mask = ~0,
658 .vendor = PCI_VENDOR_ID_VIA,
659 .device = PCI_DEVICE_ID_VIA_838X_1,
660 .subvendor = PCI_ANY_ID,
661 .subdevice = PCI_ANY_ID,
662 },
663 /* NForce3 */
664 {
665 .class = (PCI_CLASS_BRIDGE_HOST << 8),
666 .class_mask = ~0,
667 .vendor = PCI_VENDOR_ID_NVIDIA,
668 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3,
669 .subvendor = PCI_ANY_ID,
670 .subdevice = PCI_ANY_ID,
671 },
672 {
673 .class = (PCI_CLASS_BRIDGE_HOST << 8),
674 .class_mask = ~0,
675 .vendor = PCI_VENDOR_ID_NVIDIA,
676 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S,
677 .subvendor = PCI_ANY_ID,
678 .subdevice = PCI_ANY_ID,
679 },
680 /* SIS 755 */
681 {
682 .class = (PCI_CLASS_BRIDGE_HOST << 8),
683 .class_mask = ~0,
684 .vendor = PCI_VENDOR_ID_SI,
685 .device = PCI_DEVICE_ID_SI_755,
686 .subvendor = PCI_ANY_ID,
687 .subdevice = PCI_ANY_ID,
688 },
689 { }
690 };
691
692 MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table);
693
694 static struct pci_driver agp_amd64_pci_driver = {
695 .name = "agpgart-amd64",
696 .id_table = agp_amd64_pci_table,
697 .probe = agp_amd64_probe,
698 .remove = agp_amd64_remove,
699 };
700
701
702 /* Not static due to IOMMU code calling it early. */
703 int __init agp_amd64_init(void)
704 {
705 int err = 0;
706 static struct pci_device_id amd64nb[] = {
707 { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1103) },
708 { },
709 };
710
711 if (agp_off)
712 return -EINVAL;
713 if (pci_register_driver(&agp_amd64_pci_driver) > 0) {
714 struct pci_dev *dev;
715 if (!agp_try_unsupported && !agp_try_unsupported_boot) {
716 printk(KERN_INFO PFX "No supported AGP bridge found.\n");
717 #ifdef MODULE
718 printk(KERN_INFO PFX "You can try agp_try_unsupported=1\n");
719 #else
720 printk(KERN_INFO PFX "You can boot with agp=try_unsupported\n");
721 #endif
722 return -ENODEV;
723 }
724
725 /* First check that we have at least one AMD64 NB */
726 if (!pci_dev_present(amd64nb))
727 return -ENODEV;
728
729 /* Look for any AGP bridge */
730 dev = NULL;
731 err = -ENODEV;
732 for_each_pci_dev(dev) {
733 if (!pci_find_capability(dev, PCI_CAP_ID_AGP))
734 continue;
735 /* Only one bridge supported right now */
736 if (agp_amd64_probe(dev, NULL) == 0) {
737 err = 0;
738 break;
739 }
740 }
741 }
742 return err;
743 }
744
745 static void __exit agp_amd64_cleanup(void)
746 {
747 if (aperture_resource)
748 release_resource(aperture_resource);
749 pci_unregister_driver(&agp_amd64_pci_driver);
750 }
751
752 /* On AMD64 the PCI driver needs to initialize this driver early
753 for the IOMMU, so it has to be called via a backdoor. */
754 #ifndef CONFIG_GART_IOMMU
755 module_init(agp_amd64_init);
756 module_exit(agp_amd64_cleanup);
757 #endif
758
759 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>, Andi Kleen");
760 module_param(agp_try_unsupported, bool, 0);
761 MODULE_LICENSE("GPL");
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