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/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> /* PAGE_SIZE */
17 #include <asm/e820.h>
18 #include <asm/k8.h>
19 #include "agp.h"
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 struct resource *aperture_resource;
55 static int __initdata agp_try_unsupported = 1;
56
57 static void amd64_tlbflush(struct agp_memory *temp)
58 {
59 k8_flush_garts();
60 }
61
62 static int amd64_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
63 {
64 int i, j, num_entries;
65 long long tmp;
66 int mask_type;
67 struct agp_bridge_data *bridge = mem->bridge;
68 u32 pte;
69
70 num_entries = agp_num_entries();
71
72 if (type != mem->type)
73 return -EINVAL;
74 mask_type = bridge->driver->agp_type_to_mask_type(bridge, type);
75 if (mask_type != 0)
76 return -EINVAL;
77
78
79 /* Make sure we can fit the range in the gatt table. */
80 /* FIXME: could wrap */
81 if (((unsigned long)pg_start + mem->page_count) > num_entries)
82 return -EINVAL;
83
84 j = pg_start;
85
86 /* gatt table should be empty. */
87 while (j < (pg_start + mem->page_count)) {
88 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j)))
89 return -EBUSY;
90 j++;
91 }
92
93 if (mem->is_flushed == FALSE) {
94 global_cache_flush();
95 mem->is_flushed = TRUE;
96 }
97
98 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
99 tmp = agp_bridge->driver->mask_memory(agp_bridge,
100 mem->memory[i], mask_type);
101
102 BUG_ON(tmp & 0xffffff0000000ffcULL);
103 pte = (tmp & 0x000000ff00000000ULL) >> 28;
104 pte |=(tmp & 0x00000000fffff000ULL);
105 pte |= GPTE_VALID | GPTE_COHERENT;
106
107 writel(pte, agp_bridge->gatt_table+j);
108 readl(agp_bridge->gatt_table+j); /* PCI Posting. */
109 }
110 amd64_tlbflush(mem);
111 return 0;
112 }
113
114 /*
115 * This hack alters the order element according
116 * to the size of a long. It sucks. I totally disown this, even
117 * though it does appear to work for the most part.
118 */
119 static struct aper_size_info_32 amd64_aperture_sizes[7] =
120 {
121 {32, 8192, 3+(sizeof(long)/8), 0 },
122 {64, 16384, 4+(sizeof(long)/8), 1<<1 },
123 {128, 32768, 5+(sizeof(long)/8), 1<<2 },
124 {256, 65536, 6+(sizeof(long)/8), 1<<1 | 1<<2 },
125 {512, 131072, 7+(sizeof(long)/8), 1<<3 },
126 {1024, 262144, 8+(sizeof(long)/8), 1<<1 | 1<<3},
127 {2048, 524288, 9+(sizeof(long)/8), 1<<2 | 1<<3}
128 };
129
130
131 /*
132 * Get the current Aperture size from the x86-64.
133 * Note, that there may be multiple x86-64's, but we just return
134 * the value from the first one we find. The set_size functions
135 * keep the rest coherent anyway. Or at least should do.
136 */
137 static int amd64_fetch_size(void)
138 {
139 struct pci_dev *dev;
140 int i;
141 u32 temp;
142 struct aper_size_info_32 *values;
143
144 dev = k8_northbridges[0];
145 if (dev==NULL)
146 return 0;
147
148 pci_read_config_dword(dev, AMD64_GARTAPERTURECTL, &temp);
149 temp = (temp & 0xe);
150 values = A_SIZE_32(amd64_aperture_sizes);
151
152 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
153 if (temp == values[i].size_value) {
154 agp_bridge->previous_size =
155 agp_bridge->current_size = (void *) (values + i);
156
157 agp_bridge->aperture_size_idx = i;
158 return values[i].size;
159 }
160 }
161 return 0;
162 }
163
164 /*
165 * In a multiprocessor x86-64 system, this function gets
166 * called once for each CPU.
167 */
168 static u64 amd64_configure (struct pci_dev *hammer, u64 gatt_table)
169 {
170 u64 aperturebase;
171 u32 tmp;
172 u64 addr, aper_base;
173
174 /* Address to map to */
175 pci_read_config_dword (hammer, AMD64_GARTAPERTUREBASE, &tmp);
176 aperturebase = tmp << 25;
177 aper_base = (aperturebase & PCI_BASE_ADDRESS_MEM_MASK);
178
179 /* address of the mappings table */
180 addr = (u64) gatt_table;
181 addr >>= 12;
182 tmp = (u32) addr<<4;
183 tmp &= ~0xf;
184 pci_write_config_dword (hammer, AMD64_GARTTABLEBASE, tmp);
185
186 /* Enable GART translation for this hammer. */
187 pci_read_config_dword(hammer, AMD64_GARTAPERTURECTL, &tmp);
188 tmp |= GARTEN;
189 tmp &= ~(DISGARTCPU | DISGARTIO);
190 pci_write_config_dword(hammer, AMD64_GARTAPERTURECTL, tmp);
191
192 return aper_base;
193 }
194
195
196 static const struct aper_size_info_32 amd_8151_sizes[7] =
197 {
198 {2048, 524288, 9, 0x00000000 }, /* 0 0 0 0 0 0 */
199 {1024, 262144, 8, 0x00000400 }, /* 1 0 0 0 0 0 */
200 {512, 131072, 7, 0x00000600 }, /* 1 1 0 0 0 0 */
201 {256, 65536, 6, 0x00000700 }, /* 1 1 1 0 0 0 */
202 {128, 32768, 5, 0x00000720 }, /* 1 1 1 1 0 0 */
203 {64, 16384, 4, 0x00000730 }, /* 1 1 1 1 1 0 */
204 {32, 8192, 3, 0x00000738 } /* 1 1 1 1 1 1 */
205 };
206
207 static int amd_8151_configure(void)
208 {
209 unsigned long gatt_bus = virt_to_gart(agp_bridge->gatt_table_real);
210 int i;
211
212 /* Configure AGP regs in each x86-64 host bridge. */
213 for (i = 0; i < num_k8_northbridges; i++) {
214 agp_bridge->gart_bus_addr =
215 amd64_configure(k8_northbridges[i], gatt_bus);
216 }
217 k8_flush_garts();
218 return 0;
219 }
220
221
222 static void amd64_cleanup(void)
223 {
224 u32 tmp;
225 int i;
226 for (i = 0; i < num_k8_northbridges; i++) {
227 struct pci_dev *dev = k8_northbridges[i];
228 /* disable gart translation */
229 pci_read_config_dword (dev, AMD64_GARTAPERTURECTL, &tmp);
230 tmp &= ~AMD64_GARTEN;
231 pci_write_config_dword (dev, AMD64_GARTAPERTURECTL, tmp);
232 }
233 }
234
235
236 static const struct agp_bridge_driver amd_8151_driver = {
237 .owner = THIS_MODULE,
238 .aperture_sizes = amd_8151_sizes,
239 .size_type = U32_APER_SIZE,
240 .num_aperture_sizes = 7,
241 .configure = amd_8151_configure,
242 .fetch_size = amd64_fetch_size,
243 .cleanup = amd64_cleanup,
244 .tlb_flush = amd64_tlbflush,
245 .mask_memory = agp_generic_mask_memory,
246 .masks = NULL,
247 .agp_enable = agp_generic_enable,
248 .cache_flush = global_cache_flush,
249 .create_gatt_table = agp_generic_create_gatt_table,
250 .free_gatt_table = agp_generic_free_gatt_table,
251 .insert_memory = amd64_insert_memory,
252 .remove_memory = agp_generic_remove_memory,
253 .alloc_by_type = agp_generic_alloc_by_type,
254 .free_by_type = agp_generic_free_by_type,
255 .agp_alloc_page = agp_generic_alloc_page,
256 .agp_destroy_page = agp_generic_destroy_page,
257 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
258 };
259
260 /* Some basic sanity checks for the aperture. */
261 static int __devinit aperture_valid(u64 aper, u32 size)
262 {
263 if (aper == 0) {
264 printk(KERN_ERR PFX "No aperture\n");
265 return 0;
266 }
267 if (size < 32*1024*1024) {
268 printk(KERN_ERR PFX "Aperture too small (%d MB)\n", size>>20);
269 return 0;
270 }
271 if ((u64)aper + size > 0x100000000ULL) {
272 printk(KERN_ERR PFX "Aperture out of bounds\n");
273 return 0;
274 }
275 if (e820_any_mapped(aper, aper + size, E820_RAM)) {
276 printk(KERN_ERR PFX "Aperture pointing to RAM\n");
277 return 0;
278 }
279
280 /* Request the Aperture. This catches cases when someone else
281 already put a mapping in there - happens with some very broken BIOS
282
283 Maybe better to use pci_assign_resource/pci_enable_device instead
284 trusting the bridges? */
285 if (!aperture_resource &&
286 !(aperture_resource = request_mem_region(aper, size, "aperture"))) {
287 printk(KERN_ERR PFX "Aperture conflicts with PCI mapping.\n");
288 return 0;
289 }
290 return 1;
291 }
292
293 /*
294 * W*s centric BIOS sometimes only set up the aperture in the AGP
295 * bridge, not the northbridge. On AMD64 this is handled early
296 * in aperture.c, but when IOMMU is not enabled or we run
297 * on a 32bit kernel this needs to be redone.
298 * Unfortunately it is impossible to fix the aperture here because it's too late
299 * to allocate that much memory. But at least error out cleanly instead of
300 * crashing.
301 */
302 static __devinit int fix_northbridge(struct pci_dev *nb, struct pci_dev *agp,
303 u16 cap)
304 {
305 u32 aper_low, aper_hi;
306 u64 aper, nb_aper;
307 int order = 0;
308 u32 nb_order, nb_base;
309 u16 apsize;
310
311 pci_read_config_dword(nb, 0x90, &nb_order);
312 nb_order = (nb_order >> 1) & 7;
313 pci_read_config_dword(nb, 0x94, &nb_base);
314 nb_aper = nb_base << 25;
315 if (aperture_valid(nb_aper, (32*1024*1024)<<nb_order)) {
316 return 0;
317 }
318
319 /* Northbridge seems to contain crap. Try the AGP bridge. */
320
321 pci_read_config_word(agp, cap+0x14, &apsize);
322 if (apsize == 0xffff)
323 return -1;
324
325 apsize &= 0xfff;
326 /* Some BIOS use weird encodings not in the AGPv3 table. */
327 if (apsize & 0xff)
328 apsize |= 0xf00;
329 order = 7 - hweight16(apsize);
330
331 pci_read_config_dword(agp, 0x10, &aper_low);
332 pci_read_config_dword(agp, 0x14, &aper_hi);
333 aper = (aper_low & ~((1<<22)-1)) | ((u64)aper_hi << 32);
334 printk(KERN_INFO PFX "Aperture from AGP @ %Lx size %u MB\n", aper, 32 << order);
335 if (order < 0 || !aperture_valid(aper, (32*1024*1024)<<order))
336 return -1;
337
338 pci_write_config_dword(nb, 0x90, order << 1);
339 pci_write_config_dword(nb, 0x94, aper >> 25);
340
341 return 0;
342 }
343
344 static __devinit int cache_nbs (struct pci_dev *pdev, u32 cap_ptr)
345 {
346 int i;
347
348 if (cache_k8_northbridges() < 0)
349 return -ENODEV;
350
351 i = 0;
352 for (i = 0; i < num_k8_northbridges; i++) {
353 struct pci_dev *dev = k8_northbridges[i];
354 if (fix_northbridge(dev, pdev, cap_ptr) < 0) {
355 printk(KERN_ERR PFX "No usable aperture found.\n");
356 #ifdef __x86_64__
357 /* should port this to i386 */
358 printk(KERN_ERR PFX "Consider rebooting with iommu=memaper=2 to get a good aperture.\n");
359 #endif
360 return -1;
361 }
362 }
363 return 0;
364 }
365
366 /* Handle AMD 8151 quirks */
367 static void __devinit amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge)
368 {
369 char *revstring;
370
371 switch (pdev->revision) {
372 case 0x01: revstring="A0"; break;
373 case 0x02: revstring="A1"; break;
374 case 0x11: revstring="B0"; break;
375 case 0x12: revstring="B1"; break;
376 case 0x13: revstring="B2"; break;
377 case 0x14: revstring="B3"; break;
378 default: revstring="??"; break;
379 }
380
381 printk (KERN_INFO PFX "Detected AMD 8151 AGP Bridge rev %s\n", revstring);
382
383 /*
384 * Work around errata.
385 * Chips before B2 stepping incorrectly reporting v3.5
386 */
387 if (pdev->revision < 0x13) {
388 printk (KERN_INFO PFX "Correcting AGP revision (reports 3.5, is really 3.0)\n");
389 bridge->major_version = 3;
390 bridge->minor_version = 0;
391 }
392 }
393
394
395 static const struct aper_size_info_32 uli_sizes[7] =
396 {
397 {256, 65536, 6, 10},
398 {128, 32768, 5, 9},
399 {64, 16384, 4, 8},
400 {32, 8192, 3, 7},
401 {16, 4096, 2, 6},
402 {8, 2048, 1, 4},
403 {4, 1024, 0, 3}
404 };
405 static int __devinit uli_agp_init(struct pci_dev *pdev)
406 {
407 u32 httfea,baseaddr,enuscr;
408 struct pci_dev *dev1;
409 int i;
410 unsigned size = amd64_fetch_size();
411 printk(KERN_INFO "Setting up ULi AGP.\n");
412 dev1 = pci_get_slot (pdev->bus,PCI_DEVFN(0,0));
413 if (dev1 == NULL) {
414 printk(KERN_INFO PFX "Detected a ULi chipset, "
415 "but could not fine the secondary device.\n");
416 return -ENODEV;
417 }
418
419 for (i = 0; i < ARRAY_SIZE(uli_sizes); i++)
420 if (uli_sizes[i].size == size)
421 break;
422
423 if (i == ARRAY_SIZE(uli_sizes)) {
424 printk(KERN_INFO PFX "No ULi size found for %d\n", size);
425 return -ENODEV;
426 }
427
428 /* shadow x86-64 registers into ULi registers */
429 pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &httfea);
430
431 /* if x86-64 aperture base is beyond 4G, exit here */
432 if ((httfea & 0x7fff) >> (32 - 25))
433 return -ENODEV;
434
435 httfea = (httfea& 0x7fff) << 25;
436
437 pci_read_config_dword(pdev, ULI_X86_64_BASE_ADDR, &baseaddr);
438 baseaddr&= ~PCI_BASE_ADDRESS_MEM_MASK;
439 baseaddr|= httfea;
440 pci_write_config_dword(pdev, ULI_X86_64_BASE_ADDR, baseaddr);
441
442 enuscr= httfea+ (size * 1024 * 1024) - 1;
443 pci_write_config_dword(dev1, ULI_X86_64_HTT_FEA_REG, httfea);
444 pci_write_config_dword(dev1, ULI_X86_64_ENU_SCR_REG, enuscr);
445
446 pci_dev_put(dev1);
447 return 0;
448 }
449
450
451 static const struct aper_size_info_32 nforce3_sizes[5] =
452 {
453 {512, 131072, 7, 0x00000000 },
454 {256, 65536, 6, 0x00000008 },
455 {128, 32768, 5, 0x0000000C },
456 {64, 16384, 4, 0x0000000E },
457 {32, 8192, 3, 0x0000000F }
458 };
459
460 /* Handle shadow device of the Nvidia NForce3 */
461 /* CHECK-ME original 2.4 version set up some IORRs. Check if that is needed. */
462 static int nforce3_agp_init(struct pci_dev *pdev)
463 {
464 u32 tmp, apbase, apbar, aplimit;
465 struct pci_dev *dev1;
466 int i;
467 unsigned size = amd64_fetch_size();
468
469 printk(KERN_INFO PFX "Setting up Nforce3 AGP.\n");
470
471 dev1 = pci_get_slot(pdev->bus, PCI_DEVFN(11, 0));
472 if (dev1 == NULL) {
473 printk(KERN_INFO PFX "agpgart: Detected an NVIDIA "
474 "nForce3 chipset, but could not find "
475 "the secondary device.\n");
476 return -ENODEV;
477 }
478
479 for (i = 0; i < ARRAY_SIZE(nforce3_sizes); i++)
480 if (nforce3_sizes[i].size == size)
481 break;
482
483 if (i == ARRAY_SIZE(nforce3_sizes)) {
484 printk(KERN_INFO PFX "No NForce3 size found for %d\n", size);
485 return -ENODEV;
486 }
487
488 pci_read_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, &tmp);
489 tmp &= ~(0xf);
490 tmp |= nforce3_sizes[i].size_value;
491 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APSIZE, tmp);
492
493 /* shadow x86-64 registers into NVIDIA registers */
494 pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &apbase);
495
496 /* if x86-64 aperture base is beyond 4G, exit here */
497 if ( (apbase & 0x7fff) >> (32 - 25) ) {
498 printk(KERN_INFO PFX "aperture base > 4G\n");
499 return -ENODEV;
500 }
501
502 apbase = (apbase & 0x7fff) << 25;
503
504 pci_read_config_dword(pdev, NVIDIA_X86_64_0_APBASE, &apbar);
505 apbar &= ~PCI_BASE_ADDRESS_MEM_MASK;
506 apbar |= apbase;
507 pci_write_config_dword(pdev, NVIDIA_X86_64_0_APBASE, apbar);
508
509 aplimit = apbase + (size * 1024 * 1024) - 1;
510 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE1, apbase);
511 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT1, aplimit);
512 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APBASE2, apbase);
513 pci_write_config_dword(dev1, NVIDIA_X86_64_1_APLIMIT2, aplimit);
514
515 pci_dev_put(dev1);
516
517 return 0;
518 }
519
520 static int __devinit agp_amd64_probe(struct pci_dev *pdev,
521 const struct pci_device_id *ent)
522 {
523 struct agp_bridge_data *bridge;
524 u8 cap_ptr;
525
526 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
527 if (!cap_ptr)
528 return -ENODEV;
529
530 /* Could check for AGPv3 here */
531
532 bridge = agp_alloc_bridge();
533 if (!bridge)
534 return -ENOMEM;
535
536 if (pdev->vendor == PCI_VENDOR_ID_AMD &&
537 pdev->device == PCI_DEVICE_ID_AMD_8151_0) {
538 amd8151_init(pdev, bridge);
539 } else {
540 printk(KERN_INFO PFX "Detected AGP bridge %x\n", pdev->devfn);
541 }
542
543 bridge->driver = &amd_8151_driver;
544 bridge->dev = pdev;
545 bridge->capndx = cap_ptr;
546
547 /* Fill in the mode register */
548 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
549
550 if (cache_nbs(pdev, cap_ptr) == -1) {
551 agp_put_bridge(bridge);
552 return -ENODEV;
553 }
554
555 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA) {
556 int ret = nforce3_agp_init(pdev);
557 if (ret) {
558 agp_put_bridge(bridge);
559 return ret;
560 }
561 }
562
563 if (pdev->vendor == PCI_VENDOR_ID_AL) {
564 int ret = uli_agp_init(pdev);
565 if (ret) {
566 agp_put_bridge(bridge);
567 return ret;
568 }
569 }
570
571 pci_set_drvdata(pdev, bridge);
572 return agp_add_bridge(bridge);
573 }
574
575 static void __devexit agp_amd64_remove(struct pci_dev *pdev)
576 {
577 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
578
579 release_mem_region(virt_to_gart(bridge->gatt_table_real),
580 amd64_aperture_sizes[bridge->aperture_size_idx].size);
581 agp_remove_bridge(bridge);
582 agp_put_bridge(bridge);
583 }
584
585 #ifdef CONFIG_PM
586
587 static int agp_amd64_suspend(struct pci_dev *pdev, pm_message_t state)
588 {
589 pci_save_state(pdev);
590 pci_set_power_state(pdev, pci_choose_state(pdev, state));
591
592 return 0;
593 }
594
595 static int agp_amd64_resume(struct pci_dev *pdev)
596 {
597 pci_set_power_state(pdev, PCI_D0);
598 pci_restore_state(pdev);
599
600 if (pdev->vendor == PCI_VENDOR_ID_NVIDIA)
601 nforce3_agp_init(pdev);
602
603 return amd_8151_configure();
604 }
605
606 #endif /* CONFIG_PM */
607
608 static struct pci_device_id agp_amd64_pci_table[] = {
609 {
610 .class = (PCI_CLASS_BRIDGE_HOST << 8),
611 .class_mask = ~0,
612 .vendor = PCI_VENDOR_ID_AMD,
613 .device = PCI_DEVICE_ID_AMD_8151_0,
614 .subvendor = PCI_ANY_ID,
615 .subdevice = PCI_ANY_ID,
616 },
617 /* ULi M1689 */
618 {
619 .class = (PCI_CLASS_BRIDGE_HOST << 8),
620 .class_mask = ~0,
621 .vendor = PCI_VENDOR_ID_AL,
622 .device = PCI_DEVICE_ID_AL_M1689,
623 .subvendor = PCI_ANY_ID,
624 .subdevice = PCI_ANY_ID,
625 },
626 /* VIA K8T800Pro */
627 {
628 .class = (PCI_CLASS_BRIDGE_HOST << 8),
629 .class_mask = ~0,
630 .vendor = PCI_VENDOR_ID_VIA,
631 .device = PCI_DEVICE_ID_VIA_K8T800PRO_0,
632 .subvendor = PCI_ANY_ID,
633 .subdevice = PCI_ANY_ID,
634 },
635 /* VIA K8T800 */
636 {
637 .class = (PCI_CLASS_BRIDGE_HOST << 8),
638 .class_mask = ~0,
639 .vendor = PCI_VENDOR_ID_VIA,
640 .device = PCI_DEVICE_ID_VIA_8385_0,
641 .subvendor = PCI_ANY_ID,
642 .subdevice = PCI_ANY_ID,
643 },
644 /* VIA K8M800 / K8N800 */
645 {
646 .class = (PCI_CLASS_BRIDGE_HOST << 8),
647 .class_mask = ~0,
648 .vendor = PCI_VENDOR_ID_VIA,
649 .device = PCI_DEVICE_ID_VIA_8380_0,
650 .subvendor = PCI_ANY_ID,
651 .subdevice = PCI_ANY_ID,
652 },
653 /* VIA K8M890 / K8N890 */
654 {
655 .class = (PCI_CLASS_BRIDGE_HOST << 8),
656 .class_mask = ~0,
657 .vendor = PCI_VENDOR_ID_VIA,
658 .device = PCI_DEVICE_ID_VIA_VT3336,
659 .subvendor = PCI_ANY_ID,
660 .subdevice = PCI_ANY_ID,
661 },
662 /* VIA K8T890 */
663 {
664 .class = (PCI_CLASS_BRIDGE_HOST << 8),
665 .class_mask = ~0,
666 .vendor = PCI_VENDOR_ID_VIA,
667 .device = PCI_DEVICE_ID_VIA_3238_0,
668 .subvendor = PCI_ANY_ID,
669 .subdevice = PCI_ANY_ID,
670 },
671 /* VIA K8T800/K8M800/K8N800 */
672 {
673 .class = (PCI_CLASS_BRIDGE_HOST << 8),
674 .class_mask = ~0,
675 .vendor = PCI_VENDOR_ID_VIA,
676 .device = PCI_DEVICE_ID_VIA_838X_1,
677 .subvendor = PCI_ANY_ID,
678 .subdevice = PCI_ANY_ID,
679 },
680 /* NForce3 */
681 {
682 .class = (PCI_CLASS_BRIDGE_HOST << 8),
683 .class_mask = ~0,
684 .vendor = PCI_VENDOR_ID_NVIDIA,
685 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3,
686 .subvendor = PCI_ANY_ID,
687 .subdevice = PCI_ANY_ID,
688 },
689 {
690 .class = (PCI_CLASS_BRIDGE_HOST << 8),
691 .class_mask = ~0,
692 .vendor = PCI_VENDOR_ID_NVIDIA,
693 .device = PCI_DEVICE_ID_NVIDIA_NFORCE3S,
694 .subvendor = PCI_ANY_ID,
695 .subdevice = PCI_ANY_ID,
696 },
697 /* SIS 755 */
698 {
699 .class = (PCI_CLASS_BRIDGE_HOST << 8),
700 .class_mask = ~0,
701 .vendor = PCI_VENDOR_ID_SI,
702 .device = PCI_DEVICE_ID_SI_755,
703 .subvendor = PCI_ANY_ID,
704 .subdevice = PCI_ANY_ID,
705 },
706 /* SIS 760 */
707 {
708 .class = (PCI_CLASS_BRIDGE_HOST << 8),
709 .class_mask = ~0,
710 .vendor = PCI_VENDOR_ID_SI,
711 .device = PCI_DEVICE_ID_SI_760,
712 .subvendor = PCI_ANY_ID,
713 .subdevice = PCI_ANY_ID,
714 },
715 /* ALI/ULI M1695 */
716 {
717 .class = (PCI_CLASS_BRIDGE_HOST << 8),
718 .class_mask = ~0,
719 .vendor = PCI_VENDOR_ID_AL,
720 .device = 0x1695,
721 .subvendor = PCI_ANY_ID,
722 .subdevice = PCI_ANY_ID,
723 },
724
725 { }
726 };
727
728 MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table);
729
730 static struct pci_driver agp_amd64_pci_driver = {
731 .name = "agpgart-amd64",
732 .id_table = agp_amd64_pci_table,
733 .probe = agp_amd64_probe,
734 .remove = agp_amd64_remove,
735 #ifdef CONFIG_PM
736 .suspend = agp_amd64_suspend,
737 .resume = agp_amd64_resume,
738 #endif
739 };
740
741
742 /* Not static due to IOMMU code calling it early. */
743 int __init agp_amd64_init(void)
744 {
745 int err = 0;
746
747 if (agp_off)
748 return -EINVAL;
749 if (pci_register_driver(&agp_amd64_pci_driver) < 0) {
750 struct pci_dev *dev;
751 if (!agp_try_unsupported && !agp_try_unsupported_boot) {
752 printk(KERN_INFO PFX "No supported AGP bridge found.\n");
753 #ifdef MODULE
754 printk(KERN_INFO PFX "You can try agp_try_unsupported=1\n");
755 #else
756 printk(KERN_INFO PFX "You can boot with agp=try_unsupported\n");
757 #endif
758 return -ENODEV;
759 }
760
761 /* First check that we have at least one AMD64 NB */
762 if (!pci_dev_present(k8_nb_ids))
763 return -ENODEV;
764
765 /* Look for any AGP bridge */
766 dev = NULL;
767 err = -ENODEV;
768 for_each_pci_dev(dev) {
769 if (!pci_find_capability(dev, PCI_CAP_ID_AGP))
770 continue;
771 /* Only one bridge supported right now */
772 if (agp_amd64_probe(dev, NULL) == 0) {
773 err = 0;
774 break;
775 }
776 }
777 }
778 return err;
779 }
780
781 static void __exit agp_amd64_cleanup(void)
782 {
783 if (aperture_resource)
784 release_resource(aperture_resource);
785 pci_unregister_driver(&agp_amd64_pci_driver);
786 }
787
788 /* On AMD64 the PCI driver needs to initialize this driver early
789 for the IOMMU, so it has to be called via a backdoor. */
790 #ifndef CONFIG_GART_IOMMU
791 module_init(agp_amd64_init);
792 module_exit(agp_amd64_cleanup);
793 #endif
794
795 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>, Andi Kleen");
796 module_param(agp_try_unsupported, bool, 0);
797 MODULE_LICENSE("GPL");
798
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