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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / char / agp / intel-agp.c
blob8c7d727432bb5b02c25fa22467de24cbd52ef300
1 /*
2 * Intel AGPGART routines.
3 */
4
5 /*
6 * Intel(R) 855GM/852GM and 865G support added by David Dawes
7 * <dawes@tungstengraphics.com>.
8 *
9 * Intel(R) 915G/915GM support added by Alan Hourihane
10 * <alanh@tungstengraphics.com>.
11 */
12
13 #include <linux/module.h>
14 #include <linux/pci.h>
15 #include <linux/init.h>
16 #include <linux/pagemap.h>
17 #include <linux/agp_backend.h>
18 #include "agp.h"
19
20 /* Intel 815 register */
21 #define INTEL_815_APCONT 0x51
22 #define INTEL_815_ATTBASE_MASK ~0x1FFFFFFF
23
24 /* Intel i820 registers */
25 #define INTEL_I820_RDCR 0x51
26 #define INTEL_I820_ERRSTS 0xc8
27
28 /* Intel i840 registers */
29 #define INTEL_I840_MCHCFG 0x50
30 #define INTEL_I840_ERRSTS 0xc8
31
32 /* Intel i850 registers */
33 #define INTEL_I850_MCHCFG 0x50
34 #define INTEL_I850_ERRSTS 0xc8
35
36 /* intel 915G registers */
37 #define I915_GMADDR 0x18
38 #define I915_MMADDR 0x10
39 #define I915_PTEADDR 0x1C
40 #define I915_GMCH_GMS_STOLEN_48M (0x6 << 4)
41 #define I915_GMCH_GMS_STOLEN_64M (0x7 << 4)
42
43
44 /* Intel 7505 registers */
45 #define INTEL_I7505_APSIZE 0x74
46 #define INTEL_I7505_NCAPID 0x60
47 #define INTEL_I7505_NISTAT 0x6c
48 #define INTEL_I7505_ATTBASE 0x78
49 #define INTEL_I7505_ERRSTS 0x42
50 #define INTEL_I7505_AGPCTRL 0x70
51 #define INTEL_I7505_MCHCFG 0x50
52
53 static struct aper_size_info_fixed intel_i810_sizes[] =
54 {
55 {64, 16384, 4},
56 /* The 32M mode still requires a 64k gatt */
57 {32, 8192, 4}
58 };
59
60 #define AGP_DCACHE_MEMORY 1
61 #define AGP_PHYS_MEMORY 2
62
63 static struct gatt_mask intel_i810_masks[] =
64 {
65 {.mask = I810_PTE_VALID, .type = 0},
66 {.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY},
67 {.mask = I810_PTE_VALID, .type = 0}
68 };
69
70 static struct _intel_i810_private {
71 struct pci_dev *i810_dev; /* device one */
72 volatile u8 __iomem *registers;
73 int num_dcache_entries;
74 } intel_i810_private;
75
76 static int intel_i810_fetch_size(void)
77 {
78 u32 smram_miscc;
79 struct aper_size_info_fixed *values;
80
81 pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc);
82 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
83
84 if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) {
85 printk(KERN_WARNING PFX "i810 is disabled\n");
86 return 0;
87 }
88 if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) {
89 agp_bridge->previous_size =
90 agp_bridge->current_size = (void *) (values + 1);
91 agp_bridge->aperture_size_idx = 1;
92 return values[1].size;
93 } else {
94 agp_bridge->previous_size =
95 agp_bridge->current_size = (void *) (values);
96 agp_bridge->aperture_size_idx = 0;
97 return values[0].size;
98 }
99
100 return 0;
101 }
102
103 static int intel_i810_configure(void)
104 {
105 struct aper_size_info_fixed *current_size;
106 u32 temp;
107 int i;
108
109 current_size = A_SIZE_FIX(agp_bridge->current_size);
110
111 pci_read_config_dword(intel_i810_private.i810_dev, I810_MMADDR, &temp);
112 temp &= 0xfff80000;
113
114 intel_i810_private.registers = ioremap(temp, 128 * 4096);
115 if (!intel_i810_private.registers) {
116 printk(KERN_ERR PFX "Unable to remap memory.\n");
117 return -ENOMEM;
118 }
119
120 if ((readl(intel_i810_private.registers+I810_DRAM_CTL)
121 & I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {
122 /* This will need to be dynamically assigned */
123 printk(KERN_INFO PFX "detected 4MB dedicated video ram.\n");
124 intel_i810_private.num_dcache_entries = 1024;
125 }
126 pci_read_config_dword(intel_i810_private.i810_dev, I810_GMADDR, &temp);
127 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
128 writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_i810_private.registers+I810_PGETBL_CTL);
129 readl(intel_i810_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
130
131 if (agp_bridge->driver->needs_scratch_page) {
132 for (i = 0; i < current_size->num_entries; i++) {
133 writel(agp_bridge->scratch_page, intel_i810_private.registers+I810_PTE_BASE+(i*4));
134 readl(intel_i810_private.registers+I810_PTE_BASE+(i*4)); /* PCI posting. */
135 }
136 }
137 global_cache_flush();
138 return 0;
139 }
140
141 static void intel_i810_cleanup(void)
142 {
143 writel(0, intel_i810_private.registers+I810_PGETBL_CTL);
144 readl(intel_i810_private.registers); /* PCI Posting. */
145 iounmap(intel_i810_private.registers);
146 }
147
148 static void intel_i810_tlbflush(struct agp_memory *mem)
149 {
150 return;
151 }
152
153 static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
154 {
155 return;
156 }
157
158 /* Exists to support ARGB cursors */
159 static void *i8xx_alloc_pages(void)
160 {
161 struct page * page;
162
163 page = alloc_pages(GFP_KERNEL, 2);
164 if (page == NULL)
165 return NULL;
166
167 if (change_page_attr(page, 4, PAGE_KERNEL_NOCACHE) < 0) {
168 global_flush_tlb();
169 __free_page(page);
170 return NULL;
171 }
172 global_flush_tlb();
173 get_page(page);
174 SetPageLocked(page);
175 atomic_inc(&agp_bridge->current_memory_agp);
176 return page_address(page);
177 }
178
179 static void i8xx_destroy_pages(void *addr)
180 {
181 struct page *page;
182
183 if (addr == NULL)
184 return;
185
186 page = virt_to_page(addr);
187 change_page_attr(page, 4, PAGE_KERNEL);
188 global_flush_tlb();
189 put_page(page);
190 unlock_page(page);
191 free_pages((unsigned long)addr, 2);
192 atomic_dec(&agp_bridge->current_memory_agp);
193 }
194
195 static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
196 int type)
197 {
198 int i, j, num_entries;
199 void *temp;
200
201 temp = agp_bridge->current_size;
202 num_entries = A_SIZE_FIX(temp)->num_entries;
203
204 if ((pg_start + mem->page_count) > num_entries) {
205 return -EINVAL;
206 }
207 for (j = pg_start; j < (pg_start + mem->page_count); j++) {
208 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j)))
209 return -EBUSY;
210 }
211
212 if (type != 0 || mem->type != 0) {
213 if ((type == AGP_DCACHE_MEMORY) && (mem->type == AGP_DCACHE_MEMORY)) {
214 /* special insert */
215 global_cache_flush();
216 for (i = pg_start; i < (pg_start + mem->page_count); i++) {
217 writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID, intel_i810_private.registers+I810_PTE_BASE+(i*4));
218 readl(intel_i810_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
219 }
220 global_cache_flush();
221 agp_bridge->driver->tlb_flush(mem);
222 return 0;
223 }
224 if((type == AGP_PHYS_MEMORY) && (mem->type == AGP_PHYS_MEMORY))
225 goto insert;
226 return -EINVAL;
227 }
228
229 insert:
230 global_cache_flush();
231 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
232 writel(agp_bridge->driver->mask_memory(agp_bridge,
233 mem->memory[i], mem->type),
234 intel_i810_private.registers+I810_PTE_BASE+(j*4));
235 readl(intel_i810_private.registers+I810_PTE_BASE+(j*4)); /* PCI Posting. */
236 }
237 global_cache_flush();
238
239 agp_bridge->driver->tlb_flush(mem);
240 return 0;
241 }
242
243 static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
244 int type)
245 {
246 int i;
247
248 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
249 writel(agp_bridge->scratch_page, intel_i810_private.registers+I810_PTE_BASE+(i*4));
250 readl(intel_i810_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
251 }
252
253 global_cache_flush();
254 agp_bridge->driver->tlb_flush(mem);
255 return 0;
256 }
257
258 /*
259 * The i810/i830 requires a physical address to program its mouse
260 * pointer into hardware.
261 * However the Xserver still writes to it through the agp aperture.
262 */
263 static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
264 {
265 struct agp_memory *new;
266 void *addr;
267
268 if (pg_count != 1 && pg_count != 4)
269 return NULL;
270
271 switch (pg_count) {
272 case 1: addr = agp_bridge->driver->agp_alloc_page(agp_bridge);
273 break;
274 case 4:
275 /* kludge to get 4 physical pages for ARGB cursor */
276 addr = i8xx_alloc_pages();
277 break;
278 default:
279 return NULL;
280 }
281
282 if (addr == NULL)
283 return NULL;
284
285 new = agp_create_memory(pg_count);
286 if (new == NULL)
287 return NULL;
288
289 new->memory[0] = virt_to_phys(addr);
290 if (pg_count == 4) {
291 /* kludge to get 4 physical pages for ARGB cursor */
292 new->memory[1] = new->memory[0] + PAGE_SIZE;
293 new->memory[2] = new->memory[1] + PAGE_SIZE;
294 new->memory[3] = new->memory[2] + PAGE_SIZE;
295 }
296 new->page_count = pg_count;
297 new->num_scratch_pages = pg_count;
298 new->type = AGP_PHYS_MEMORY;
299 new->physical = new->memory[0];
300 return new;
301 }
302
303 static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type)
304 {
305 struct agp_memory *new;
306
307 if (type == AGP_DCACHE_MEMORY) {
308 if (pg_count != intel_i810_private.num_dcache_entries)
309 return NULL;
310
311 new = agp_create_memory(1);
312 if (new == NULL)
313 return NULL;
314
315 new->type = AGP_DCACHE_MEMORY;
316 new->page_count = pg_count;
317 new->num_scratch_pages = 0;
318 vfree(new->memory);
319 return new;
320 }
321 if (type == AGP_PHYS_MEMORY)
322 return alloc_agpphysmem_i8xx(pg_count, type);
323
324 return NULL;
325 }
326
327 static void intel_i810_free_by_type(struct agp_memory *curr)
328 {
329 agp_free_key(curr->key);
330 if(curr->type == AGP_PHYS_MEMORY) {
331 if (curr->page_count == 4)
332 i8xx_destroy_pages(phys_to_virt(curr->memory[0]));
333 else
334 agp_bridge->driver->agp_destroy_page(
335 phys_to_virt(curr->memory[0]));
336 vfree(curr->memory);
337 }
338 kfree(curr);
339 }
340
341 static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge,
342 unsigned long addr, int type)
343 {
344 /* Type checking must be done elsewhere */
345 return addr | bridge->driver->masks[type].mask;
346 }
347
348 static struct aper_size_info_fixed intel_i830_sizes[] =
349 {
350 {128, 32768, 5},
351 /* The 64M mode still requires a 128k gatt */
352 {64, 16384, 5},
353 {256, 65536, 6},
354 };
355
356 static struct _intel_i830_private {
357 struct pci_dev *i830_dev; /* device one */
358 volatile u8 __iomem *registers;
359 volatile u32 __iomem *gtt; /* I915G */
360 int gtt_entries;
361 } intel_i830_private;
362
363 static void intel_i830_init_gtt_entries(void)
364 {
365 u16 gmch_ctrl;
366 int gtt_entries;
367 u8 rdct;
368 int local = 0;
369 static const int ddt[4] = { 0, 16, 32, 64 };
370 int size;
371
372 pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
373
374 /* We obtain the size of the GTT, which is also stored (for some
375 * reason) at the top of stolen memory. Then we add 4KB to that
376 * for the video BIOS popup, which is also stored in there. */
377 size = agp_bridge->driver->fetch_size() + 4;
378
379 if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
380 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
381 switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
382 case I830_GMCH_GMS_STOLEN_512:
383 gtt_entries = KB(512) - KB(size);
384 break;
385 case I830_GMCH_GMS_STOLEN_1024:
386 gtt_entries = MB(1) - KB(size);
387 break;
388 case I830_GMCH_GMS_STOLEN_8192:
389 gtt_entries = MB(8) - KB(size);
390 break;
391 case I830_GMCH_GMS_LOCAL:
392 rdct = readb(intel_i830_private.registers+I830_RDRAM_CHANNEL_TYPE);
393 gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
394 MB(ddt[I830_RDRAM_DDT(rdct)]);
395 local = 1;
396 break;
397 default:
398 gtt_entries = 0;
399 break;
400 }
401 } else {
402 switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
403 case I855_GMCH_GMS_STOLEN_1M:
404 gtt_entries = MB(1) - KB(size);
405 break;
406 case I855_GMCH_GMS_STOLEN_4M:
407 gtt_entries = MB(4) - KB(size);
408 break;
409 case I855_GMCH_GMS_STOLEN_8M:
410 gtt_entries = MB(8) - KB(size);
411 break;
412 case I855_GMCH_GMS_STOLEN_16M:
413 gtt_entries = MB(16) - KB(size);
414 break;
415 case I855_GMCH_GMS_STOLEN_32M:
416 gtt_entries = MB(32) - KB(size);
417 break;
418 case I915_GMCH_GMS_STOLEN_48M:
419 /* Check it's really I915G */
420 if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
421 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
422 gtt_entries = MB(48) - KB(size);
423 else
424 gtt_entries = 0;
425 break;
426 case I915_GMCH_GMS_STOLEN_64M:
427 /* Check it's really I915G */
428 if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
429 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB)
430 gtt_entries = MB(64) - KB(size);
431 else
432 gtt_entries = 0;
433 default:
434 gtt_entries = 0;
435 break;
436 }
437 }
438 if (gtt_entries > 0)
439 printk(KERN_INFO PFX "Detected %dK %s memory.\n",
440 gtt_entries / KB(1), local ? "local" : "stolen");
441 else
442 printk(KERN_INFO PFX
443 "No pre-allocated video memory detected.\n");
444 gtt_entries /= KB(4);
445
446 intel_i830_private.gtt_entries = gtt_entries;
447 }
448
449 /* The intel i830 automatically initializes the agp aperture during POST.
450 * Use the memory already set aside for in the GTT.
451 */
452 static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
453 {
454 int page_order;
455 struct aper_size_info_fixed *size;
456 int num_entries;
457 u32 temp;
458
459 size = agp_bridge->current_size;
460 page_order = size->page_order;
461 num_entries = size->num_entries;
462 agp_bridge->gatt_table_real = NULL;
463
464 pci_read_config_dword(intel_i830_private.i830_dev,I810_MMADDR,&temp);
465 temp &= 0xfff80000;
466
467 intel_i830_private.registers = ioremap(temp,128 * 4096);
468 if (!intel_i830_private.registers)
469 return -ENOMEM;
470
471 temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
472 global_cache_flush(); /* FIXME: ?? */
473
474 /* we have to call this as early as possible after the MMIO base address is known */
475 intel_i830_init_gtt_entries();
476
477 agp_bridge->gatt_table = NULL;
478
479 agp_bridge->gatt_bus_addr = temp;
480
481 return 0;
482 }
483
484 /* Return the gatt table to a sane state. Use the top of stolen
485 * memory for the GTT.
486 */
487 static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge)
488 {
489 return 0;
490 }
491
492 static int intel_i830_fetch_size(void)
493 {
494 u16 gmch_ctrl;
495 struct aper_size_info_fixed *values;
496
497 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
498
499 if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB &&
500 agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) {
501 /* 855GM/852GM/865G has 128MB aperture size */
502 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
503 agp_bridge->aperture_size_idx = 0;
504 return values[0].size;
505 }
506
507 pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
508
509 if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
510 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
511 agp_bridge->aperture_size_idx = 0;
512 return values[0].size;
513 } else {
514 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + 1);
515 agp_bridge->aperture_size_idx = 1;
516 return values[1].size;
517 }
518
519 return 0;
520 }
521
522 static int intel_i830_configure(void)
523 {
524 struct aper_size_info_fixed *current_size;
525 u32 temp;
526 u16 gmch_ctrl;
527 int i;
528
529 current_size = A_SIZE_FIX(agp_bridge->current_size);
530
531 pci_read_config_dword(intel_i830_private.i830_dev,I810_GMADDR,&temp);
532 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
533
534 pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
535 gmch_ctrl |= I830_GMCH_ENABLED;
536 pci_write_config_word(agp_bridge->dev,I830_GMCH_CTRL,gmch_ctrl);
537
538 writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_i830_private.registers+I810_PGETBL_CTL);
539 readl(intel_i830_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
540
541 if (agp_bridge->driver->needs_scratch_page) {
542 for (i = intel_i830_private.gtt_entries; i < current_size->num_entries; i++) {
543 writel(agp_bridge->scratch_page, intel_i830_private.registers+I810_PTE_BASE+(i*4));
544 readl(intel_i830_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
545 }
546 }
547
548 global_cache_flush();
549 return 0;
550 }
551
552 static void intel_i830_cleanup(void)
553 {
554 iounmap(intel_i830_private.registers);
555 }
556
557 static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int type)
558 {
559 int i,j,num_entries;
560 void *temp;
561
562 temp = agp_bridge->current_size;
563 num_entries = A_SIZE_FIX(temp)->num_entries;
564
565 if (pg_start < intel_i830_private.gtt_entries) {
566 printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_i830_private.gtt_entries == 0x%.8x\n",
567 pg_start,intel_i830_private.gtt_entries);
568
569 printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
570 return -EINVAL;
571 }
572
573 if ((pg_start + mem->page_count) > num_entries)
574 return -EINVAL;
575
576 /* The i830 can't check the GTT for entries since its read only,
577 * depend on the caller to make the correct offset decisions.
578 */
579
580 if ((type != 0 && type != AGP_PHYS_MEMORY) ||
581 (mem->type != 0 && mem->type != AGP_PHYS_MEMORY))
582 return -EINVAL;
583
584 global_cache_flush(); /* FIXME: Necessary ?*/
585
586 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
587 writel(agp_bridge->driver->mask_memory(agp_bridge,
588 mem->memory[i], mem->type),
589 intel_i830_private.registers+I810_PTE_BASE+(j*4));
590 readl(intel_i830_private.registers+I810_PTE_BASE+(j*4)); /* PCI Posting. */
591 }
592
593 global_cache_flush();
594 agp_bridge->driver->tlb_flush(mem);
595 return 0;
596 }
597
598 static int intel_i830_remove_entries(struct agp_memory *mem,off_t pg_start,
599 int type)
600 {
601 int i;
602
603 global_cache_flush();
604
605 if (pg_start < intel_i830_private.gtt_entries) {
606 printk (KERN_INFO PFX "Trying to disable local/stolen memory\n");
607 return -EINVAL;
608 }
609
610 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
611 writel(agp_bridge->scratch_page, intel_i830_private.registers+I810_PTE_BASE+(i*4));
612 readl(intel_i830_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
613 }
614
615 global_cache_flush();
616 agp_bridge->driver->tlb_flush(mem);
617 return 0;
618 }
619
620 static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count,int type)
621 {
622 if (type == AGP_PHYS_MEMORY)
623 return alloc_agpphysmem_i8xx(pg_count, type);
624
625 /* always return NULL for other allocation types for now */
626 return NULL;
627 }
628
629 static int intel_i915_configure(void)
630 {
631 struct aper_size_info_fixed *current_size;
632 u32 temp;
633 u16 gmch_ctrl;
634 int i;
635
636 current_size = A_SIZE_FIX(agp_bridge->current_size);
637
638 pci_read_config_dword(intel_i830_private.i830_dev, I915_GMADDR, &temp);
639
640 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
641
642 pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
643 gmch_ctrl |= I830_GMCH_ENABLED;
644 pci_write_config_word(agp_bridge->dev,I830_GMCH_CTRL,gmch_ctrl);
645
646 writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_i830_private.registers+I810_PGETBL_CTL);
647 readl(intel_i830_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
648
649 if (agp_bridge->driver->needs_scratch_page) {
650 for (i = intel_i830_private.gtt_entries; i < current_size->num_entries; i++) {
651 writel(agp_bridge->scratch_page, intel_i830_private.gtt+i);
652 readl(intel_i830_private.gtt+i); /* PCI Posting. */
653 }
654 }
655
656 global_cache_flush();
657 return 0;
658 }
659
660 static void intel_i915_cleanup(void)
661 {
662 iounmap(intel_i830_private.gtt);
663 iounmap(intel_i830_private.registers);
664 }
665
666 static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
667 int type)
668 {
669 int i,j,num_entries;
670 void *temp;
671
672 temp = agp_bridge->current_size;
673 num_entries = A_SIZE_FIX(temp)->num_entries;
674
675 if (pg_start < intel_i830_private.gtt_entries) {
676 printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_i830_private.gtt_entries == 0x%.8x\n",
677 pg_start,intel_i830_private.gtt_entries);
678
679 printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
680 return -EINVAL;
681 }
682
683 if ((pg_start + mem->page_count) > num_entries)
684 return -EINVAL;
685
686 /* The i830 can't check the GTT for entries since its read only,
687 * depend on the caller to make the correct offset decisions.
688 */
689
690 if ((type != 0 && type != AGP_PHYS_MEMORY) ||
691 (mem->type != 0 && mem->type != AGP_PHYS_MEMORY))
692 return -EINVAL;
693
694 global_cache_flush();
695
696 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
697 writel(agp_bridge->driver->mask_memory(agp_bridge,
698 mem->memory[i], mem->type), intel_i830_private.gtt+j);
699 readl(intel_i830_private.gtt+j); /* PCI Posting. */
700 }
701
702 global_cache_flush();
703 agp_bridge->driver->tlb_flush(mem);
704 return 0;
705 }
706
707 static int intel_i915_remove_entries(struct agp_memory *mem,off_t pg_start,
708 int type)
709 {
710 int i;
711
712 global_cache_flush();
713
714 if (pg_start < intel_i830_private.gtt_entries) {
715 printk (KERN_INFO PFX "Trying to disable local/stolen memory\n");
716 return -EINVAL;
717 }
718
719 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
720 writel(agp_bridge->scratch_page, intel_i830_private.gtt+i);
721 readl(intel_i830_private.gtt+i);
722 }
723
724 global_cache_flush();
725 agp_bridge->driver->tlb_flush(mem);
726 return 0;
727 }
728
729 static int intel_i915_fetch_size(void)
730 {
731 struct aper_size_info_fixed *values;
732 u32 temp, offset = 0;
733
734 #define I915_256MB_ADDRESS_MASK (1<<27)
735
736 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
737
738 pci_read_config_dword(intel_i830_private.i830_dev, I915_GMADDR, &temp);
739 if (temp & I915_256MB_ADDRESS_MASK)
740 offset = 0; /* 128MB aperture */
741 else
742 offset = 2; /* 256MB aperture */
743 agp_bridge->previous_size = agp_bridge->current_size = (void *)(values + offset);
744 return values[offset].size;
745 }
746
747 /* The intel i915 automatically initializes the agp aperture during POST.
748 * Use the memory already set aside for in the GTT.
749 */
750 static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
751 {
752 int page_order;
753 struct aper_size_info_fixed *size;
754 int num_entries;
755 u32 temp, temp2;
756
757 size = agp_bridge->current_size;
758 page_order = size->page_order;
759 num_entries = size->num_entries;
760 agp_bridge->gatt_table_real = NULL;
761
762 pci_read_config_dword(intel_i830_private.i830_dev, I915_MMADDR, &temp);
763 pci_read_config_dword(intel_i830_private.i830_dev, I915_PTEADDR,&temp2);
764
765 intel_i830_private.gtt = ioremap(temp2, 256 * 1024);
766 if (!intel_i830_private.gtt)
767 return -ENOMEM;
768
769 temp &= 0xfff80000;
770
771 intel_i830_private.registers = ioremap(temp,128 * 4096);
772 if (!intel_i830_private.registers)
773 return -ENOMEM;
774
775 temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
776 global_cache_flush(); /* FIXME: ? */
777
778 /* we have to call this as early as possible after the MMIO base address is known */
779 intel_i830_init_gtt_entries();
780
781 agp_bridge->gatt_table = NULL;
782
783 agp_bridge->gatt_bus_addr = temp;
784
785 return 0;
786 }
787
788 static int intel_fetch_size(void)
789 {
790 int i;
791 u16 temp;
792 struct aper_size_info_16 *values;
793
794 pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
795 values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
796
797 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
798 if (temp == values[i].size_value) {
799 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
800 agp_bridge->aperture_size_idx = i;
801 return values[i].size;
802 }
803 }
804
805 return 0;
806 }
807
808 static int __intel_8xx_fetch_size(u8 temp)
809 {
810 int i;
811 struct aper_size_info_8 *values;
812
813 values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
814
815 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
816 if (temp == values[i].size_value) {
817 agp_bridge->previous_size =
818 agp_bridge->current_size = (void *) (values + i);
819 agp_bridge->aperture_size_idx = i;
820 return values[i].size;
821 }
822 }
823 return 0;
824 }
825
826 static int intel_8xx_fetch_size(void)
827 {
828 u8 temp;
829
830 pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
831 return __intel_8xx_fetch_size(temp);
832 }
833
834 static int intel_815_fetch_size(void)
835 {
836 u8 temp;
837
838 /* Intel 815 chipsets have a _weird_ APSIZE register with only
839 * one non-reserved bit, so mask the others out ... */
840 pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
841 temp &= (1 << 3);
842
843 return __intel_8xx_fetch_size(temp);
844 }
845
846 static void intel_tlbflush(struct agp_memory *mem)
847 {
848 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
849 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
850 }
851
852
853 static void intel_8xx_tlbflush(struct agp_memory *mem)
854 {
855 u32 temp;
856 pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
857 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp & ~(1 << 7));
858 pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
859 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp | (1 << 7));
860 }
861
862
863 static void intel_cleanup(void)
864 {
865 u16 temp;
866 struct aper_size_info_16 *previous_size;
867
868 previous_size = A_SIZE_16(agp_bridge->previous_size);
869 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
870 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
871 pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
872 }
873
874
875 static void intel_8xx_cleanup(void)
876 {
877 u16 temp;
878 struct aper_size_info_8 *previous_size;
879
880 previous_size = A_SIZE_8(agp_bridge->previous_size);
881 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
882 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
883 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
884 }
885
886
887 static int intel_configure(void)
888 {
889 u32 temp;
890 u16 temp2;
891 struct aper_size_info_16 *current_size;
892
893 current_size = A_SIZE_16(agp_bridge->current_size);
894
895 /* aperture size */
896 pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
897
898 /* address to map to */
899 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
900 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
901
902 /* attbase - aperture base */
903 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
904
905 /* agpctrl */
906 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
907
908 /* paccfg/nbxcfg */
909 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
910 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
911 (temp2 & ~(1 << 10)) | (1 << 9));
912 /* clear any possible error conditions */
913 pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
914 return 0;
915 }
916
917 static int intel_815_configure(void)
918 {
919 u32 temp, addr;
920 u8 temp2;
921 struct aper_size_info_8 *current_size;
922
923 /* attbase - aperture base */
924 /* the Intel 815 chipset spec. says that bits 29-31 in the
925 * ATTBASE register are reserved -> try not to write them */
926 if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
927 printk (KERN_EMERG PFX "gatt bus addr too high");
928 return -EINVAL;
929 }
930
931 current_size = A_SIZE_8(agp_bridge->current_size);
932
933 /* aperture size */
934 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
935 current_size->size_value);
936
937 /* address to map to */
938 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
939 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
940
941 pci_read_config_dword(agp_bridge->dev, INTEL_ATTBASE, &addr);
942 addr &= INTEL_815_ATTBASE_MASK;
943 addr |= agp_bridge->gatt_bus_addr;
944 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, addr);
945
946 /* agpctrl */
947 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
948
949 /* apcont */
950 pci_read_config_byte(agp_bridge->dev, INTEL_815_APCONT, &temp2);
951 pci_write_config_byte(agp_bridge->dev, INTEL_815_APCONT, temp2 | (1 << 1));
952
953 /* clear any possible error conditions */
954 /* Oddness : this chipset seems to have no ERRSTS register ! */
955 return 0;
956 }
957
958 static void intel_820_tlbflush(struct agp_memory *mem)
959 {
960 return;
961 }
962
963 static void intel_820_cleanup(void)
964 {
965 u8 temp;
966 struct aper_size_info_8 *previous_size;
967
968 previous_size = A_SIZE_8(agp_bridge->previous_size);
969 pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp);
970 pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR,
971 temp & ~(1 << 1));
972 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
973 previous_size->size_value);
974 }
975
976
977 static int intel_820_configure(void)
978 {
979 u32 temp;
980 u8 temp2;
981 struct aper_size_info_8 *current_size;
982
983 current_size = A_SIZE_8(agp_bridge->current_size);
984
985 /* aperture size */
986 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
987
988 /* address to map to */
989 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
990 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
991
992 /* attbase - aperture base */
993 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
994
995 /* agpctrl */
996 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
997
998 /* global enable aperture access */
999 /* This flag is not accessed through MCHCFG register as in */
1000 /* i850 chipset. */
1001 pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp2);
1002 pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR, temp2 | (1 << 1));
1003 /* clear any possible AGP-related error conditions */
1004 pci_write_config_word(agp_bridge->dev, INTEL_I820_ERRSTS, 0x001c);
1005 return 0;
1006 }
1007
1008 static int intel_840_configure(void)
1009 {
1010 u32 temp;
1011 u16 temp2;
1012 struct aper_size_info_8 *current_size;
1013
1014 current_size = A_SIZE_8(agp_bridge->current_size);
1015
1016 /* aperture size */
1017 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1018
1019 /* address to map to */
1020 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1021 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1022
1023 /* attbase - aperture base */
1024 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1025
1026 /* agpctrl */
1027 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1028
1029 /* mcgcfg */
1030 pci_read_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, &temp2);
1031 pci_write_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, temp2 | (1 << 9));
1032 /* clear any possible error conditions */
1033 pci_write_config_word(agp_bridge->dev, INTEL_I840_ERRSTS, 0xc000);
1034 return 0;
1035 }
1036
1037 static int intel_845_configure(void)
1038 {
1039 u32 temp;
1040 u8 temp2;
1041 struct aper_size_info_8 *current_size;
1042
1043 current_size = A_SIZE_8(agp_bridge->current_size);
1044
1045 /* aperture size */
1046 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1047
1048 /* address to map to */
1049 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1050 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1051
1052 /* attbase - aperture base */
1053 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1054
1055 /* agpctrl */
1056 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1057
1058 /* agpm */
1059 pci_read_config_byte(agp_bridge->dev, INTEL_I845_AGPM, &temp2);
1060 pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
1061 /* clear any possible error conditions */
1062 pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
1063 return 0;
1064 }
1065
1066 static int intel_850_configure(void)
1067 {
1068 u32 temp;
1069 u16 temp2;
1070 struct aper_size_info_8 *current_size;
1071
1072 current_size = A_SIZE_8(agp_bridge->current_size);
1073
1074 /* aperture size */
1075 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1076
1077 /* address to map to */
1078 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1079 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1080
1081 /* attbase - aperture base */
1082 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1083
1084 /* agpctrl */
1085 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1086
1087 /* mcgcfg */
1088 pci_read_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, &temp2);
1089 pci_write_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, temp2 | (1 << 9));
1090 /* clear any possible AGP-related error conditions */
1091 pci_write_config_word(agp_bridge->dev, INTEL_I850_ERRSTS, 0x001c);
1092 return 0;
1093 }
1094
1095 static int intel_860_configure(void)
1096 {
1097 u32 temp;
1098 u16 temp2;
1099 struct aper_size_info_8 *current_size;
1100
1101 current_size = A_SIZE_8(agp_bridge->current_size);
1102
1103 /* aperture size */
1104 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1105
1106 /* address to map to */
1107 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1108 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1109
1110 /* attbase - aperture base */
1111 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1112
1113 /* agpctrl */
1114 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1115
1116 /* mcgcfg */
1117 pci_read_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, &temp2);
1118 pci_write_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, temp2 | (1 << 9));
1119 /* clear any possible AGP-related error conditions */
1120 pci_write_config_word(agp_bridge->dev, INTEL_I860_ERRSTS, 0xf700);
1121 return 0;
1122 }
1123
1124 static int intel_830mp_configure(void)
1125 {
1126 u32 temp;
1127 u16 temp2;
1128 struct aper_size_info_8 *current_size;
1129
1130 current_size = A_SIZE_8(agp_bridge->current_size);
1131
1132 /* aperture size */
1133 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1134
1135 /* address to map to */
1136 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1137 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1138
1139 /* attbase - aperture base */
1140 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1141
1142 /* agpctrl */
1143 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1144
1145 /* gmch */
1146 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1147 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp2 | (1 << 9));
1148 /* clear any possible AGP-related error conditions */
1149 pci_write_config_word(agp_bridge->dev, INTEL_I830_ERRSTS, 0x1c);
1150 return 0;
1151 }
1152
1153 static int intel_7505_configure(void)
1154 {
1155 u32 temp;
1156 u16 temp2;
1157 struct aper_size_info_8 *current_size;
1158
1159 current_size = A_SIZE_8(agp_bridge->current_size);
1160
1161 /* aperture size */
1162 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1163
1164 /* address to map to */
1165 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1166 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1167
1168 /* attbase - aperture base */
1169 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1170
1171 /* agpctrl */
1172 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1173
1174 /* mchcfg */
1175 pci_read_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, &temp2);
1176 pci_write_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, temp2 | (1 << 9));
1177
1178 return 0;
1179 }
1180
1181 /* Setup function */
1182 static struct gatt_mask intel_generic_masks[] =
1183 {
1184 {.mask = 0x00000017, .type = 0}
1185 };
1186
1187 static struct aper_size_info_8 intel_815_sizes[2] =
1188 {
1189 {64, 16384, 4, 0},
1190 {32, 8192, 3, 8},
1191 };
1192
1193 static struct aper_size_info_8 intel_8xx_sizes[7] =
1194 {
1195 {256, 65536, 6, 0},
1196 {128, 32768, 5, 32},
1197 {64, 16384, 4, 48},
1198 {32, 8192, 3, 56},
1199 {16, 4096, 2, 60},
1200 {8, 2048, 1, 62},
1201 {4, 1024, 0, 63}
1202 };
1203
1204 static struct aper_size_info_16 intel_generic_sizes[7] =
1205 {
1206 {256, 65536, 6, 0},
1207 {128, 32768, 5, 32},
1208 {64, 16384, 4, 48},
1209 {32, 8192, 3, 56},
1210 {16, 4096, 2, 60},
1211 {8, 2048, 1, 62},
1212 {4, 1024, 0, 63}
1213 };
1214
1215 static struct aper_size_info_8 intel_830mp_sizes[4] =
1216 {
1217 {256, 65536, 6, 0},
1218 {128, 32768, 5, 32},
1219 {64, 16384, 4, 48},
1220 {32, 8192, 3, 56}
1221 };
1222
1223 static struct agp_bridge_driver intel_generic_driver = {
1224 .owner = THIS_MODULE,
1225 .aperture_sizes = intel_generic_sizes,
1226 .size_type = U16_APER_SIZE,
1227 .num_aperture_sizes = 7,
1228 .configure = intel_configure,
1229 .fetch_size = intel_fetch_size,
1230 .cleanup = intel_cleanup,
1231 .tlb_flush = intel_tlbflush,
1232 .mask_memory = agp_generic_mask_memory,
1233 .masks = intel_generic_masks,
1234 .agp_enable = agp_generic_enable,
1235 .cache_flush = global_cache_flush,
1236 .create_gatt_table = agp_generic_create_gatt_table,
1237 .free_gatt_table = agp_generic_free_gatt_table,
1238 .insert_memory = agp_generic_insert_memory,
1239 .remove_memory = agp_generic_remove_memory,
1240 .alloc_by_type = agp_generic_alloc_by_type,
1241 .free_by_type = agp_generic_free_by_type,
1242 .agp_alloc_page = agp_generic_alloc_page,
1243 .agp_destroy_page = agp_generic_destroy_page,
1244 };
1245
1246 static struct agp_bridge_driver intel_810_driver = {
1247 .owner = THIS_MODULE,
1248 .aperture_sizes = intel_i810_sizes,
1249 .size_type = FIXED_APER_SIZE,
1250 .num_aperture_sizes = 2,
1251 .needs_scratch_page = TRUE,
1252 .configure = intel_i810_configure,
1253 .fetch_size = intel_i810_fetch_size,
1254 .cleanup = intel_i810_cleanup,
1255 .tlb_flush = intel_i810_tlbflush,
1256 .mask_memory = intel_i810_mask_memory,
1257 .masks = intel_i810_masks,
1258 .agp_enable = intel_i810_agp_enable,
1259 .cache_flush = global_cache_flush,
1260 .create_gatt_table = agp_generic_create_gatt_table,
1261 .free_gatt_table = agp_generic_free_gatt_table,
1262 .insert_memory = intel_i810_insert_entries,
1263 .remove_memory = intel_i810_remove_entries,
1264 .alloc_by_type = intel_i810_alloc_by_type,
1265 .free_by_type = intel_i810_free_by_type,
1266 .agp_alloc_page = agp_generic_alloc_page,
1267 .agp_destroy_page = agp_generic_destroy_page,
1268 };
1269
1270 static struct agp_bridge_driver intel_815_driver = {
1271 .owner = THIS_MODULE,
1272 .aperture_sizes = intel_815_sizes,
1273 .size_type = U8_APER_SIZE,
1274 .num_aperture_sizes = 2,
1275 .configure = intel_815_configure,
1276 .fetch_size = intel_815_fetch_size,
1277 .cleanup = intel_8xx_cleanup,
1278 .tlb_flush = intel_8xx_tlbflush,
1279 .mask_memory = agp_generic_mask_memory,
1280 .masks = intel_generic_masks,
1281 .agp_enable = agp_generic_enable,
1282 .cache_flush = global_cache_flush,
1283 .create_gatt_table = agp_generic_create_gatt_table,
1284 .free_gatt_table = agp_generic_free_gatt_table,
1285 .insert_memory = agp_generic_insert_memory,
1286 .remove_memory = agp_generic_remove_memory,
1287 .alloc_by_type = agp_generic_alloc_by_type,
1288 .free_by_type = agp_generic_free_by_type,
1289 .agp_alloc_page = agp_generic_alloc_page,
1290 .agp_destroy_page = agp_generic_destroy_page,
1291 };
1292
1293 static struct agp_bridge_driver intel_830_driver = {
1294 .owner = THIS_MODULE,
1295 .aperture_sizes = intel_i830_sizes,
1296 .size_type = FIXED_APER_SIZE,
1297 .num_aperture_sizes = 3,
1298 .needs_scratch_page = TRUE,
1299 .configure = intel_i830_configure,
1300 .fetch_size = intel_i830_fetch_size,
1301 .cleanup = intel_i830_cleanup,
1302 .tlb_flush = intel_i810_tlbflush,
1303 .mask_memory = intel_i810_mask_memory,
1304 .masks = intel_i810_masks,
1305 .agp_enable = intel_i810_agp_enable,
1306 .cache_flush = global_cache_flush,
1307 .create_gatt_table = intel_i830_create_gatt_table,
1308 .free_gatt_table = intel_i830_free_gatt_table,
1309 .insert_memory = intel_i830_insert_entries,
1310 .remove_memory = intel_i830_remove_entries,
1311 .alloc_by_type = intel_i830_alloc_by_type,
1312 .free_by_type = intel_i810_free_by_type,
1313 .agp_alloc_page = agp_generic_alloc_page,
1314 .agp_destroy_page = agp_generic_destroy_page,
1315 };
1316
1317 static struct agp_bridge_driver intel_820_driver = {
1318 .owner = THIS_MODULE,
1319 .aperture_sizes = intel_8xx_sizes,
1320 .size_type = U8_APER_SIZE,
1321 .num_aperture_sizes = 7,
1322 .configure = intel_820_configure,
1323 .fetch_size = intel_8xx_fetch_size,
1324 .cleanup = intel_820_cleanup,
1325 .tlb_flush = intel_820_tlbflush,
1326 .mask_memory = agp_generic_mask_memory,
1327 .masks = intel_generic_masks,
1328 .agp_enable = agp_generic_enable,
1329 .cache_flush = global_cache_flush,
1330 .create_gatt_table = agp_generic_create_gatt_table,
1331 .free_gatt_table = agp_generic_free_gatt_table,
1332 .insert_memory = agp_generic_insert_memory,
1333 .remove_memory = agp_generic_remove_memory,
1334 .alloc_by_type = agp_generic_alloc_by_type,
1335 .free_by_type = agp_generic_free_by_type,
1336 .agp_alloc_page = agp_generic_alloc_page,
1337 .agp_destroy_page = agp_generic_destroy_page,
1338 };
1339
1340 static struct agp_bridge_driver intel_830mp_driver = {
1341 .owner = THIS_MODULE,
1342 .aperture_sizes = intel_830mp_sizes,
1343 .size_type = U8_APER_SIZE,
1344 .num_aperture_sizes = 4,
1345 .configure = intel_830mp_configure,
1346 .fetch_size = intel_8xx_fetch_size,
1347 .cleanup = intel_8xx_cleanup,
1348 .tlb_flush = intel_8xx_tlbflush,
1349 .mask_memory = agp_generic_mask_memory,
1350 .masks = intel_generic_masks,
1351 .agp_enable = agp_generic_enable,
1352 .cache_flush = global_cache_flush,
1353 .create_gatt_table = agp_generic_create_gatt_table,
1354 .free_gatt_table = agp_generic_free_gatt_table,
1355 .insert_memory = agp_generic_insert_memory,
1356 .remove_memory = agp_generic_remove_memory,
1357 .alloc_by_type = agp_generic_alloc_by_type,
1358 .free_by_type = agp_generic_free_by_type,
1359 .agp_alloc_page = agp_generic_alloc_page,
1360 .agp_destroy_page = agp_generic_destroy_page,
1361 };
1362
1363 static struct agp_bridge_driver intel_840_driver = {
1364 .owner = THIS_MODULE,
1365 .aperture_sizes = intel_8xx_sizes,
1366 .size_type = U8_APER_SIZE,
1367 .num_aperture_sizes = 7,
1368 .configure = intel_840_configure,
1369 .fetch_size = intel_8xx_fetch_size,
1370 .cleanup = intel_8xx_cleanup,
1371 .tlb_flush = intel_8xx_tlbflush,
1372 .mask_memory = agp_generic_mask_memory,
1373 .masks = intel_generic_masks,
1374 .agp_enable = agp_generic_enable,
1375 .cache_flush = global_cache_flush,
1376 .create_gatt_table = agp_generic_create_gatt_table,
1377 .free_gatt_table = agp_generic_free_gatt_table,
1378 .insert_memory = agp_generic_insert_memory,
1379 .remove_memory = agp_generic_remove_memory,
1380 .alloc_by_type = agp_generic_alloc_by_type,
1381 .free_by_type = agp_generic_free_by_type,
1382 .agp_alloc_page = agp_generic_alloc_page,
1383 .agp_destroy_page = agp_generic_destroy_page,
1384 };
1385
1386 static struct agp_bridge_driver intel_845_driver = {
1387 .owner = THIS_MODULE,
1388 .aperture_sizes = intel_8xx_sizes,
1389 .size_type = U8_APER_SIZE,
1390 .num_aperture_sizes = 7,
1391 .configure = intel_845_configure,
1392 .fetch_size = intel_8xx_fetch_size,
1393 .cleanup = intel_8xx_cleanup,
1394 .tlb_flush = intel_8xx_tlbflush,
1395 .mask_memory = agp_generic_mask_memory,
1396 .masks = intel_generic_masks,
1397 .agp_enable = agp_generic_enable,
1398 .cache_flush = global_cache_flush,
1399 .create_gatt_table = agp_generic_create_gatt_table,
1400 .free_gatt_table = agp_generic_free_gatt_table,
1401 .insert_memory = agp_generic_insert_memory,
1402 .remove_memory = agp_generic_remove_memory,
1403 .alloc_by_type = agp_generic_alloc_by_type,
1404 .free_by_type = agp_generic_free_by_type,
1405 .agp_alloc_page = agp_generic_alloc_page,
1406 .agp_destroy_page = agp_generic_destroy_page,
1407 };
1408
1409 static struct agp_bridge_driver intel_850_driver = {
1410 .owner = THIS_MODULE,
1411 .aperture_sizes = intel_8xx_sizes,
1412 .size_type = U8_APER_SIZE,
1413 .num_aperture_sizes = 7,
1414 .configure = intel_850_configure,
1415 .fetch_size = intel_8xx_fetch_size,
1416 .cleanup = intel_8xx_cleanup,
1417 .tlb_flush = intel_8xx_tlbflush,
1418 .mask_memory = agp_generic_mask_memory,
1419 .masks = intel_generic_masks,
1420 .agp_enable = agp_generic_enable,
1421 .cache_flush = global_cache_flush,
1422 .create_gatt_table = agp_generic_create_gatt_table,
1423 .free_gatt_table = agp_generic_free_gatt_table,
1424 .insert_memory = agp_generic_insert_memory,
1425 .remove_memory = agp_generic_remove_memory,
1426 .alloc_by_type = agp_generic_alloc_by_type,
1427 .free_by_type = agp_generic_free_by_type,
1428 .agp_alloc_page = agp_generic_alloc_page,
1429 .agp_destroy_page = agp_generic_destroy_page,
1430 };
1431
1432 static struct agp_bridge_driver intel_860_driver = {
1433 .owner = THIS_MODULE,
1434 .aperture_sizes = intel_8xx_sizes,
1435 .size_type = U8_APER_SIZE,
1436 .num_aperture_sizes = 7,
1437 .configure = intel_860_configure,
1438 .fetch_size = intel_8xx_fetch_size,
1439 .cleanup = intel_8xx_cleanup,
1440 .tlb_flush = intel_8xx_tlbflush,
1441 .mask_memory = agp_generic_mask_memory,
1442 .masks = intel_generic_masks,
1443 .agp_enable = agp_generic_enable,
1444 .cache_flush = global_cache_flush,
1445 .create_gatt_table = agp_generic_create_gatt_table,
1446 .free_gatt_table = agp_generic_free_gatt_table,
1447 .insert_memory = agp_generic_insert_memory,
1448 .remove_memory = agp_generic_remove_memory,
1449 .alloc_by_type = agp_generic_alloc_by_type,
1450 .free_by_type = agp_generic_free_by_type,
1451 .agp_alloc_page = agp_generic_alloc_page,
1452 .agp_destroy_page = agp_generic_destroy_page,
1453 };
1454
1455 static struct agp_bridge_driver intel_915_driver = {
1456 .owner = THIS_MODULE,
1457 .aperture_sizes = intel_i830_sizes,
1458 .size_type = FIXED_APER_SIZE,
1459 .num_aperture_sizes = 3,
1460 .needs_scratch_page = TRUE,
1461 .configure = intel_i915_configure,
1462 .fetch_size = intel_i915_fetch_size,
1463 .cleanup = intel_i915_cleanup,
1464 .tlb_flush = intel_i810_tlbflush,
1465 .mask_memory = intel_i810_mask_memory,
1466 .masks = intel_i810_masks,
1467 .agp_enable = intel_i810_agp_enable,
1468 .cache_flush = global_cache_flush,
1469 .create_gatt_table = intel_i915_create_gatt_table,
1470 .free_gatt_table = intel_i830_free_gatt_table,
1471 .insert_memory = intel_i915_insert_entries,
1472 .remove_memory = intel_i915_remove_entries,
1473 .alloc_by_type = intel_i830_alloc_by_type,
1474 .free_by_type = intel_i810_free_by_type,
1475 .agp_alloc_page = agp_generic_alloc_page,
1476 .agp_destroy_page = agp_generic_destroy_page,
1477 };
1478
1479
1480 static struct agp_bridge_driver intel_7505_driver = {
1481 .owner = THIS_MODULE,
1482 .aperture_sizes = intel_8xx_sizes,
1483 .size_type = U8_APER_SIZE,
1484 .num_aperture_sizes = 7,
1485 .configure = intel_7505_configure,
1486 .fetch_size = intel_8xx_fetch_size,
1487 .cleanup = intel_8xx_cleanup,
1488 .tlb_flush = intel_8xx_tlbflush,
1489 .mask_memory = agp_generic_mask_memory,
1490 .masks = intel_generic_masks,
1491 .agp_enable = agp_generic_enable,
1492 .cache_flush = global_cache_flush,
1493 .create_gatt_table = agp_generic_create_gatt_table,
1494 .free_gatt_table = agp_generic_free_gatt_table,
1495 .insert_memory = agp_generic_insert_memory,
1496 .remove_memory = agp_generic_remove_memory,
1497 .alloc_by_type = agp_generic_alloc_by_type,
1498 .free_by_type = agp_generic_free_by_type,
1499 .agp_alloc_page = agp_generic_alloc_page,
1500 .agp_destroy_page = agp_generic_destroy_page,
1501 };
1502
1503 static int find_i810(u16 device)
1504 {
1505 struct pci_dev *i810_dev;
1506
1507 i810_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
1508 if (!i810_dev)
1509 return 0;
1510 intel_i810_private.i810_dev = i810_dev;
1511 return 1;
1512 }
1513
1514 static int find_i830(u16 device)
1515 {
1516 struct pci_dev *i830_dev;
1517
1518 i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
1519 if (i830_dev && PCI_FUNC(i830_dev->devfn) != 0) {
1520 i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL,
1521 device, i830_dev);
1522 }
1523
1524 if (!i830_dev)
1525 return 0;
1526
1527 intel_i830_private.i830_dev = i830_dev;
1528 return 1;
1529 }
1530
1531 static int __devinit agp_intel_probe(struct pci_dev *pdev,
1532 const struct pci_device_id *ent)
1533 {
1534 struct agp_bridge_data *bridge;
1535 char *name = "(unknown)";
1536 u8 cap_ptr = 0;
1537 struct resource *r;
1538
1539 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
1540
1541 bridge = agp_alloc_bridge();
1542 if (!bridge)
1543 return -ENOMEM;
1544
1545 switch (pdev->device) {
1546 case PCI_DEVICE_ID_INTEL_82443LX_0:
1547 bridge->driver = &intel_generic_driver;
1548 name = "440LX";
1549 break;
1550 case PCI_DEVICE_ID_INTEL_82443BX_0:
1551 bridge->driver = &intel_generic_driver;
1552 name = "440BX";
1553 break;
1554 case PCI_DEVICE_ID_INTEL_82443GX_0:
1555 bridge->driver = &intel_generic_driver;
1556 name = "440GX";
1557 break;
1558 case PCI_DEVICE_ID_INTEL_82810_MC1:
1559 name = "i810";
1560 if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG1))
1561 goto fail;
1562 bridge->driver = &intel_810_driver;
1563 break;
1564 case PCI_DEVICE_ID_INTEL_82810_MC3:
1565 name = "i810 DC100";
1566 if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG3))
1567 goto fail;
1568 bridge->driver = &intel_810_driver;
1569 break;
1570 case PCI_DEVICE_ID_INTEL_82810E_MC:
1571 name = "i810 E";
1572 if (!find_i810(PCI_DEVICE_ID_INTEL_82810E_IG))
1573 goto fail;
1574 bridge->driver = &intel_810_driver;
1575 break;
1576 case PCI_DEVICE_ID_INTEL_82815_MC:
1577 /*
1578 * The i815 can operate either as an i810 style
1579 * integrated device, or as an AGP4X motherboard.
1580 */
1581 if (find_i810(PCI_DEVICE_ID_INTEL_82815_CGC))
1582 bridge->driver = &intel_810_driver;
1583 else
1584 bridge->driver = &intel_815_driver;
1585 name = "i815";
1586 break;
1587 case PCI_DEVICE_ID_INTEL_82820_HB:
1588 case PCI_DEVICE_ID_INTEL_82820_UP_HB:
1589 bridge->driver = &intel_820_driver;
1590 name = "i820";
1591 break;
1592 case PCI_DEVICE_ID_INTEL_82830_HB:
1593 if (find_i830(PCI_DEVICE_ID_INTEL_82830_CGC)) {
1594 bridge->driver = &intel_830_driver;
1595 } else {
1596 bridge->driver = &intel_830mp_driver;
1597 }
1598 name = "830M";
1599 break;
1600 case PCI_DEVICE_ID_INTEL_82840_HB:
1601 bridge->driver = &intel_840_driver;
1602 name = "i840";
1603 break;
1604 case PCI_DEVICE_ID_INTEL_82845_HB:
1605 bridge->driver = &intel_845_driver;
1606 name = "i845";
1607 break;
1608 case PCI_DEVICE_ID_INTEL_82845G_HB:
1609 if (find_i830(PCI_DEVICE_ID_INTEL_82845G_IG)) {
1610 bridge->driver = &intel_830_driver;
1611 } else {
1612 bridge->driver = &intel_845_driver;
1613 }
1614 name = "845G";
1615 break;
1616 case PCI_DEVICE_ID_INTEL_82850_HB:
1617 bridge->driver = &intel_850_driver;
1618 name = "i850";
1619 break;
1620 case PCI_DEVICE_ID_INTEL_82855PM_HB:
1621 bridge->driver = &intel_845_driver;
1622 name = "855PM";
1623 break;
1624 case PCI_DEVICE_ID_INTEL_82855GM_HB:
1625 if (find_i830(PCI_DEVICE_ID_INTEL_82855GM_IG)) {
1626 bridge->driver = &intel_830_driver;
1627 name = "855";
1628 } else {
1629 bridge->driver = &intel_845_driver;
1630 name = "855GM";
1631 }
1632 break;
1633 case PCI_DEVICE_ID_INTEL_82860_HB:
1634 bridge->driver = &intel_860_driver;
1635 name = "i860";
1636 break;
1637 case PCI_DEVICE_ID_INTEL_82865_HB:
1638 if (find_i830(PCI_DEVICE_ID_INTEL_82865_IG)) {
1639 bridge->driver = &intel_830_driver;
1640 } else {
1641 bridge->driver = &intel_845_driver;
1642 }
1643 name = "865";
1644 break;
1645 case PCI_DEVICE_ID_INTEL_82875_HB:
1646 bridge->driver = &intel_845_driver;
1647 name = "i875";
1648 break;
1649 case PCI_DEVICE_ID_INTEL_82915G_HB:
1650 if (find_i830(PCI_DEVICE_ID_INTEL_82915G_IG)) {
1651 bridge->driver = &intel_915_driver;
1652 } else {
1653 bridge->driver = &intel_845_driver;
1654 }
1655 name = "915G";
1656 break;
1657 case PCI_DEVICE_ID_INTEL_82915GM_HB:
1658 if (find_i830(PCI_DEVICE_ID_INTEL_82915GM_IG)) {
1659 bridge->driver = &intel_915_driver;
1660 } else {
1661 bridge->driver = &intel_845_driver;
1662 }
1663 name = "915GM";
1664 break;
1665 case PCI_DEVICE_ID_INTEL_7505_0:
1666 bridge->driver = &intel_7505_driver;
1667 name = "E7505";
1668 break;
1669 case PCI_DEVICE_ID_INTEL_7205_0:
1670 bridge->driver = &intel_7505_driver;
1671 name = "E7205";
1672 break;
1673 default:
1674 if (cap_ptr)
1675 printk(KERN_WARNING PFX "Unsupported Intel chipset (device id: %04x)\n",
1676 pdev->device);
1677 agp_put_bridge(bridge);
1678 return -ENODEV;
1679 };
1680
1681 bridge->dev = pdev;
1682 bridge->capndx = cap_ptr;
1683
1684 if (bridge->driver == &intel_810_driver)
1685 bridge->dev_private_data = &intel_i810_private;
1686 else if (bridge->driver == &intel_830_driver)
1687 bridge->dev_private_data = &intel_i830_private;
1688
1689 printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n", name);
1690
1691 /*
1692 * The following fixes the case where the BIOS has "forgotten" to
1693 * provide an address range for the GART.
1694 * 20030610 - hamish@zot.org
1695 */
1696 r = &pdev->resource[0];
1697 if (!r->start && r->end) {
1698 if(pci_assign_resource(pdev, 0)) {
1699 printk(KERN_ERR PFX "could not assign resource 0\n");
1700 agp_put_bridge(bridge);
1701 return -ENODEV;
1702 }
1703 }
1704
1705 /*
1706 * If the device has not been properly setup, the following will catch
1707 * the problem and should stop the system from crashing.
1708 * 20030610 - hamish@zot.org
1709 */
1710 if (pci_enable_device(pdev)) {
1711 printk(KERN_ERR PFX "Unable to Enable PCI device\n");
1712 agp_put_bridge(bridge);
1713 return -ENODEV;
1714 }
1715
1716 /* Fill in the mode register */
1717 if (cap_ptr) {
1718 pci_read_config_dword(pdev,
1719 bridge->capndx+PCI_AGP_STATUS,
1720 &bridge->mode);
1721 }
1722
1723 pci_set_drvdata(pdev, bridge);
1724 return agp_add_bridge(bridge);
1725
1726 fail:
1727 printk(KERN_ERR PFX "Detected an Intel %s chipset, "
1728 "but could not find the secondary device.\n", name);
1729 agp_put_bridge(bridge);
1730 return -ENODEV;
1731 }
1732
1733 static void __devexit agp_intel_remove(struct pci_dev *pdev)
1734 {
1735 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
1736
1737 agp_remove_bridge(bridge);
1738
1739 if (intel_i810_private.i810_dev)
1740 pci_dev_put(intel_i810_private.i810_dev);
1741 if (intel_i830_private.i830_dev)
1742 pci_dev_put(intel_i830_private.i830_dev);
1743
1744 agp_put_bridge(bridge);
1745 }
1746
1747 static int agp_intel_resume(struct pci_dev *pdev)
1748 {
1749 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
1750
1751 pci_restore_state(pdev);
1752
1753 if (bridge->driver == &intel_generic_driver)
1754 intel_configure();
1755 else if (bridge->driver == &intel_850_driver)
1756 intel_850_configure();
1757 else if (bridge->driver == &intel_845_driver)
1758 intel_845_configure();
1759 else if (bridge->driver == &intel_830mp_driver)
1760 intel_830mp_configure();
1761 else if (bridge->driver == &intel_915_driver)
1762 intel_i915_configure();
1763 else if (bridge->driver == &intel_830_driver)
1764 intel_i830_configure();
1765 else if (bridge->driver == &intel_810_driver)
1766 intel_i810_configure();
1767
1768 return 0;
1769 }
1770
1771 static struct pci_device_id agp_intel_pci_table[] = {
1772 #define ID(x) \
1773 { \
1774 .class = (PCI_CLASS_BRIDGE_HOST << 8), \
1775 .class_mask = ~0, \
1776 .vendor = PCI_VENDOR_ID_INTEL, \
1777 .device = x, \
1778 .subvendor = PCI_ANY_ID, \
1779 .subdevice = PCI_ANY_ID, \
1780 }
1781 ID(PCI_DEVICE_ID_INTEL_82443LX_0),
1782 ID(PCI_DEVICE_ID_INTEL_82443BX_0),
1783 ID(PCI_DEVICE_ID_INTEL_82443GX_0),
1784 ID(PCI_DEVICE_ID_INTEL_82810_MC1),
1785 ID(PCI_DEVICE_ID_INTEL_82810_MC3),
1786 ID(PCI_DEVICE_ID_INTEL_82810E_MC),
1787 ID(PCI_DEVICE_ID_INTEL_82815_MC),
1788 ID(PCI_DEVICE_ID_INTEL_82820_HB),
1789 ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
1790 ID(PCI_DEVICE_ID_INTEL_82830_HB),
1791 ID(PCI_DEVICE_ID_INTEL_82840_HB),
1792 ID(PCI_DEVICE_ID_INTEL_82845_HB),
1793 ID(PCI_DEVICE_ID_INTEL_82845G_HB),
1794 ID(PCI_DEVICE_ID_INTEL_82850_HB),
1795 ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
1796 ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
1797 ID(PCI_DEVICE_ID_INTEL_82860_HB),
1798 ID(PCI_DEVICE_ID_INTEL_82865_HB),
1799 ID(PCI_DEVICE_ID_INTEL_82875_HB),
1800 ID(PCI_DEVICE_ID_INTEL_7505_0),
1801 ID(PCI_DEVICE_ID_INTEL_7205_0),
1802 ID(PCI_DEVICE_ID_INTEL_82915G_HB),
1803 ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
1804 { }
1805 };
1806
1807 MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
1808
1809 static struct pci_driver agp_intel_pci_driver = {
1810 .name = "agpgart-intel",
1811 .id_table = agp_intel_pci_table,
1812 .probe = agp_intel_probe,
1813 .remove = __devexit_p(agp_intel_remove),
1814 .resume = agp_intel_resume,
1815 };
1816
1817 static int __init agp_intel_init(void)
1818 {
1819 if (agp_off)
1820 return -EINVAL;
1821 return pci_register_driver(&agp_intel_pci_driver);
1822 }
1823
1824 static void __exit agp_intel_cleanup(void)
1825 {
1826 pci_unregister_driver(&agp_intel_pci_driver);
1827 }
1828
1829 module_init(agp_intel_init);
1830 module_exit(agp_intel_cleanup);
1831
1832 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
1833 MODULE_LICENSE("GPL and additional rights");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree