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conn rcv_lock converted to spinlock, struct cor_sock created, kernel_packet skb_clone...
[cor_2_6_31.git] / drivers / char / agp / intel-agp.c
blob8c9d50db5c3a7913fba96958a4a1a433cde90330
1 /*
2 * Intel AGPGART routines.
3 */
4
5 #include <linux/module.h>
6 #include <linux/pci.h>
7 #include <linux/init.h>
8 #include <linux/kernel.h>
9 #include <linux/pagemap.h>
10 #include <linux/agp_backend.h>
11 #include "agp.h"
12
13 #define PCI_DEVICE_ID_INTEL_E7221_HB 0x2588
14 #define PCI_DEVICE_ID_INTEL_E7221_IG 0x258a
15 #define PCI_DEVICE_ID_INTEL_82946GZ_HB 0x2970
16 #define PCI_DEVICE_ID_INTEL_82946GZ_IG 0x2972
17 #define PCI_DEVICE_ID_INTEL_82G35_HB 0x2980
18 #define PCI_DEVICE_ID_INTEL_82G35_IG 0x2982
19 #define PCI_DEVICE_ID_INTEL_82965Q_HB 0x2990
20 #define PCI_DEVICE_ID_INTEL_82965Q_IG 0x2992
21 #define PCI_DEVICE_ID_INTEL_82965G_HB 0x29A0
22 #define PCI_DEVICE_ID_INTEL_82965G_IG 0x29A2
23 #define PCI_DEVICE_ID_INTEL_82965GM_HB 0x2A00
24 #define PCI_DEVICE_ID_INTEL_82965GM_IG 0x2A02
25 #define PCI_DEVICE_ID_INTEL_82965GME_HB 0x2A10
26 #define PCI_DEVICE_ID_INTEL_82965GME_IG 0x2A12
27 #define PCI_DEVICE_ID_INTEL_82945GME_HB 0x27AC
28 #define PCI_DEVICE_ID_INTEL_82945GME_IG 0x27AE
29 #define PCI_DEVICE_ID_INTEL_IGDGM_HB 0xA010
30 #define PCI_DEVICE_ID_INTEL_IGDGM_IG 0xA011
31 #define PCI_DEVICE_ID_INTEL_IGDG_HB 0xA000
32 #define PCI_DEVICE_ID_INTEL_IGDG_IG 0xA001
33 #define PCI_DEVICE_ID_INTEL_G33_HB 0x29C0
34 #define PCI_DEVICE_ID_INTEL_G33_IG 0x29C2
35 #define PCI_DEVICE_ID_INTEL_Q35_HB 0x29B0
36 #define PCI_DEVICE_ID_INTEL_Q35_IG 0x29B2
37 #define PCI_DEVICE_ID_INTEL_Q33_HB 0x29D0
38 #define PCI_DEVICE_ID_INTEL_Q33_IG 0x29D2
39 #define PCI_DEVICE_ID_INTEL_GM45_HB 0x2A40
40 #define PCI_DEVICE_ID_INTEL_GM45_IG 0x2A42
41 #define PCI_DEVICE_ID_INTEL_IGD_E_HB 0x2E00
42 #define PCI_DEVICE_ID_INTEL_IGD_E_IG 0x2E02
43 #define PCI_DEVICE_ID_INTEL_Q45_HB 0x2E10
44 #define PCI_DEVICE_ID_INTEL_Q45_IG 0x2E12
45 #define PCI_DEVICE_ID_INTEL_G45_HB 0x2E20
46 #define PCI_DEVICE_ID_INTEL_G45_IG 0x2E22
47 #define PCI_DEVICE_ID_INTEL_G41_HB 0x2E30
48 #define PCI_DEVICE_ID_INTEL_G41_IG 0x2E32
49 #define PCI_DEVICE_ID_INTEL_IGDNG_D_HB 0x0040
50 #define PCI_DEVICE_ID_INTEL_IGDNG_D_IG 0x0042
51 #define PCI_DEVICE_ID_INTEL_IGDNG_M_HB 0x0044
52 #define PCI_DEVICE_ID_INTEL_IGDNG_M_IG 0x0046
53
54 /* cover 915 and 945 variants */
55 #define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
56 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || \
57 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || \
58 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || \
59 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || \
60 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB)
61
62 #define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
63 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82G35_HB || \
64 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
65 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
66 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
67 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB)
68
69 #define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
70 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
71 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q33_HB || \
72 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDGM_HB || \
73 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDG_HB)
74
75 #define IS_IGD (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDGM_HB || \
76 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDG_HB)
77
78 #define IS_G4X (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_E_HB || \
79 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q45_HB || \
80 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G45_HB || \
81 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_GM45_HB || \
82 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G41_HB || \
83 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_D_HB || \
84 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGDNG_M_HB)
85
86 extern int agp_memory_reserved;
87
88
89 /* Intel 815 register */
90 #define INTEL_815_APCONT 0x51
91 #define INTEL_815_ATTBASE_MASK ~0x1FFFFFFF
92
93 /* Intel i820 registers */
94 #define INTEL_I820_RDCR 0x51
95 #define INTEL_I820_ERRSTS 0xc8
96
97 /* Intel i840 registers */
98 #define INTEL_I840_MCHCFG 0x50
99 #define INTEL_I840_ERRSTS 0xc8
100
101 /* Intel i850 registers */
102 #define INTEL_I850_MCHCFG 0x50
103 #define INTEL_I850_ERRSTS 0xc8
104
105 /* intel 915G registers */
106 #define I915_GMADDR 0x18
107 #define I915_MMADDR 0x10
108 #define I915_PTEADDR 0x1C
109 #define I915_GMCH_GMS_STOLEN_48M (0x6 << 4)
110 #define I915_GMCH_GMS_STOLEN_64M (0x7 << 4)
111 #define G33_GMCH_GMS_STOLEN_128M (0x8 << 4)
112 #define G33_GMCH_GMS_STOLEN_256M (0x9 << 4)
113 #define INTEL_GMCH_GMS_STOLEN_96M (0xa << 4)
114 #define INTEL_GMCH_GMS_STOLEN_160M (0xb << 4)
115 #define INTEL_GMCH_GMS_STOLEN_224M (0xc << 4)
116 #define INTEL_GMCH_GMS_STOLEN_352M (0xd << 4)
117
118 #define I915_IFPADDR 0x60
119
120 /* Intel 965G registers */
121 #define I965_MSAC 0x62
122 #define I965_IFPADDR 0x70
123
124 /* Intel 7505 registers */
125 #define INTEL_I7505_APSIZE 0x74
126 #define INTEL_I7505_NCAPID 0x60
127 #define INTEL_I7505_NISTAT 0x6c
128 #define INTEL_I7505_ATTBASE 0x78
129 #define INTEL_I7505_ERRSTS 0x42
130 #define INTEL_I7505_AGPCTRL 0x70
131 #define INTEL_I7505_MCHCFG 0x50
132
133 static const struct aper_size_info_fixed intel_i810_sizes[] =
134 {
135 {64, 16384, 4},
136 /* The 32M mode still requires a 64k gatt */
137 {32, 8192, 4}
138 };
139
140 #define AGP_DCACHE_MEMORY 1
141 #define AGP_PHYS_MEMORY 2
142 #define INTEL_AGP_CACHED_MEMORY 3
143
144 static struct gatt_mask intel_i810_masks[] =
145 {
146 {.mask = I810_PTE_VALID, .type = 0},
147 {.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY},
148 {.mask = I810_PTE_VALID, .type = 0},
149 {.mask = I810_PTE_VALID | I830_PTE_SYSTEM_CACHED,
150 .type = INTEL_AGP_CACHED_MEMORY}
151 };
152
153 static struct _intel_private {
154 struct pci_dev *pcidev; /* device one */
155 u8 __iomem *registers;
156 u32 __iomem *gtt; /* I915G */
157 int num_dcache_entries;
158 /* gtt_entries is the number of gtt entries that are already mapped
159 * to stolen memory. Stolen memory is larger than the memory mapped
160 * through gtt_entries, as it includes some reserved space for the BIOS
161 * popup and for the GTT.
162 */
163 int gtt_entries; /* i830+ */
164 union {
165 void __iomem *i9xx_flush_page;
166 void *i8xx_flush_page;
167 };
168 struct page *i8xx_page;
169 struct resource ifp_resource;
170 int resource_valid;
171 } intel_private;
172
173 static int intel_i810_fetch_size(void)
174 {
175 u32 smram_miscc;
176 struct aper_size_info_fixed *values;
177
178 pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc);
179 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
180
181 if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) {
182 dev_warn(&agp_bridge->dev->dev, "i810 is disabled\n");
183 return 0;
184 }
185 if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) {
186 agp_bridge->previous_size =
187 agp_bridge->current_size = (void *) (values + 1);
188 agp_bridge->aperture_size_idx = 1;
189 return values[1].size;
190 } else {
191 agp_bridge->previous_size =
192 agp_bridge->current_size = (void *) (values);
193 agp_bridge->aperture_size_idx = 0;
194 return values[0].size;
195 }
196
197 return 0;
198 }
199
200 static int intel_i810_configure(void)
201 {
202 struct aper_size_info_fixed *current_size;
203 u32 temp;
204 int i;
205
206 current_size = A_SIZE_FIX(agp_bridge->current_size);
207
208 if (!intel_private.registers) {
209 pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
210 temp &= 0xfff80000;
211
212 intel_private.registers = ioremap(temp, 128 * 4096);
213 if (!intel_private.registers) {
214 dev_err(&intel_private.pcidev->dev,
215 "can't remap memory\n");
216 return -ENOMEM;
217 }
218 }
219
220 if ((readl(intel_private.registers+I810_DRAM_CTL)
221 & I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {
222 /* This will need to be dynamically assigned */
223 dev_info(&intel_private.pcidev->dev,
224 "detected 4MB dedicated video ram\n");
225 intel_private.num_dcache_entries = 1024;
226 }
227 pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
228 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
229 writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
230 readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
231
232 if (agp_bridge->driver->needs_scratch_page) {
233 for (i = 0; i < current_size->num_entries; i++) {
234 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
235 }
236 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI posting. */
237 }
238 global_cache_flush();
239 return 0;
240 }
241
242 static void intel_i810_cleanup(void)
243 {
244 writel(0, intel_private.registers+I810_PGETBL_CTL);
245 readl(intel_private.registers); /* PCI Posting. */
246 iounmap(intel_private.registers);
247 }
248
249 static void intel_i810_tlbflush(struct agp_memory *mem)
250 {
251 return;
252 }
253
254 static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
255 {
256 return;
257 }
258
259 /* Exists to support ARGB cursors */
260 static struct page *i8xx_alloc_pages(void)
261 {
262 struct page *page;
263
264 page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2);
265 if (page == NULL)
266 return NULL;
267
268 if (set_pages_uc(page, 4) < 0) {
269 set_pages_wb(page, 4);
270 __free_pages(page, 2);
271 return NULL;
272 }
273 get_page(page);
274 atomic_inc(&agp_bridge->current_memory_agp);
275 return page;
276 }
277
278 static void i8xx_destroy_pages(struct page *page)
279 {
280 if (page == NULL)
281 return;
282
283 set_pages_wb(page, 4);
284 put_page(page);
285 __free_pages(page, 2);
286 atomic_dec(&agp_bridge->current_memory_agp);
287 }
288
289 static int intel_i830_type_to_mask_type(struct agp_bridge_data *bridge,
290 int type)
291 {
292 if (type < AGP_USER_TYPES)
293 return type;
294 else if (type == AGP_USER_CACHED_MEMORY)
295 return INTEL_AGP_CACHED_MEMORY;
296 else
297 return 0;
298 }
299
300 static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
301 int type)
302 {
303 int i, j, num_entries;
304 void *temp;
305 int ret = -EINVAL;
306 int mask_type;
307
308 if (mem->page_count == 0)
309 goto out;
310
311 temp = agp_bridge->current_size;
312 num_entries = A_SIZE_FIX(temp)->num_entries;
313
314 if ((pg_start + mem->page_count) > num_entries)
315 goto out_err;
316
317
318 for (j = pg_start; j < (pg_start + mem->page_count); j++) {
319 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) {
320 ret = -EBUSY;
321 goto out_err;
322 }
323 }
324
325 if (type != mem->type)
326 goto out_err;
327
328 mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
329
330 switch (mask_type) {
331 case AGP_DCACHE_MEMORY:
332 if (!mem->is_flushed)
333 global_cache_flush();
334 for (i = pg_start; i < (pg_start + mem->page_count); i++) {
335 writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID,
336 intel_private.registers+I810_PTE_BASE+(i*4));
337 }
338 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
339 break;
340 case AGP_PHYS_MEMORY:
341 case AGP_NORMAL_MEMORY:
342 if (!mem->is_flushed)
343 global_cache_flush();
344 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
345 writel(agp_bridge->driver->mask_memory(agp_bridge,
346 mem->pages[i],
347 mask_type),
348 intel_private.registers+I810_PTE_BASE+(j*4));
349 }
350 readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
351 break;
352 default:
353 goto out_err;
354 }
355
356 agp_bridge->driver->tlb_flush(mem);
357 out:
358 ret = 0;
359 out_err:
360 mem->is_flushed = true;
361 return ret;
362 }
363
364 static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
365 int type)
366 {
367 int i;
368
369 if (mem->page_count == 0)
370 return 0;
371
372 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
373 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
374 }
375 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
376
377 agp_bridge->driver->tlb_flush(mem);
378 return 0;
379 }
380
381 /*
382 * The i810/i830 requires a physical address to program its mouse
383 * pointer into hardware.
384 * However the Xserver still writes to it through the agp aperture.
385 */
386 static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
387 {
388 struct agp_memory *new;
389 struct page *page;
390
391 switch (pg_count) {
392 case 1: page = agp_bridge->driver->agp_alloc_page(agp_bridge);
393 break;
394 case 4:
395 /* kludge to get 4 physical pages for ARGB cursor */
396 page = i8xx_alloc_pages();
397 break;
398 default:
399 return NULL;
400 }
401
402 if (page == NULL)
403 return NULL;
404
405 new = agp_create_memory(pg_count);
406 if (new == NULL)
407 return NULL;
408
409 new->pages[0] = page;
410 if (pg_count == 4) {
411 /* kludge to get 4 physical pages for ARGB cursor */
412 new->pages[1] = new->pages[0] + 1;
413 new->pages[2] = new->pages[1] + 1;
414 new->pages[3] = new->pages[2] + 1;
415 }
416 new->page_count = pg_count;
417 new->num_scratch_pages = pg_count;
418 new->type = AGP_PHYS_MEMORY;
419 new->physical = page_to_phys(new->pages[0]);
420 return new;
421 }
422
423 static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type)
424 {
425 struct agp_memory *new;
426
427 if (type == AGP_DCACHE_MEMORY) {
428 if (pg_count != intel_private.num_dcache_entries)
429 return NULL;
430
431 new = agp_create_memory(1);
432 if (new == NULL)
433 return NULL;
434
435 new->type = AGP_DCACHE_MEMORY;
436 new->page_count = pg_count;
437 new->num_scratch_pages = 0;
438 agp_free_page_array(new);
439 return new;
440 }
441 if (type == AGP_PHYS_MEMORY)
442 return alloc_agpphysmem_i8xx(pg_count, type);
443 return NULL;
444 }
445
446 static void intel_i810_free_by_type(struct agp_memory *curr)
447 {
448 agp_free_key(curr->key);
449 if (curr->type == AGP_PHYS_MEMORY) {
450 if (curr->page_count == 4)
451 i8xx_destroy_pages(curr->pages[0]);
452 else {
453 agp_bridge->driver->agp_destroy_page(curr->pages[0],
454 AGP_PAGE_DESTROY_UNMAP);
455 agp_bridge->driver->agp_destroy_page(curr->pages[0],
456 AGP_PAGE_DESTROY_FREE);
457 }
458 agp_free_page_array(curr);
459 }
460 kfree(curr);
461 }
462
463 static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge,
464 struct page *page, int type)
465 {
466 unsigned long addr = phys_to_gart(page_to_phys(page));
467 /* Type checking must be done elsewhere */
468 return addr | bridge->driver->masks[type].mask;
469 }
470
471 static struct aper_size_info_fixed intel_i830_sizes[] =
472 {
473 {128, 32768, 5},
474 /* The 64M mode still requires a 128k gatt */
475 {64, 16384, 5},
476 {256, 65536, 6},
477 {512, 131072, 7},
478 };
479
480 static void intel_i830_init_gtt_entries(void)
481 {
482 u16 gmch_ctrl;
483 int gtt_entries;
484 u8 rdct;
485 int local = 0;
486 static const int ddt[4] = { 0, 16, 32, 64 };
487 int size; /* reserved space (in kb) at the top of stolen memory */
488
489 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
490
491 if (IS_I965) {
492 u32 pgetbl_ctl;
493 pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
494
495 /* The 965 has a field telling us the size of the GTT,
496 * which may be larger than what is necessary to map the
497 * aperture.
498 */
499 switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
500 case I965_PGETBL_SIZE_128KB:
501 size = 128;
502 break;
503 case I965_PGETBL_SIZE_256KB:
504 size = 256;
505 break;
506 case I965_PGETBL_SIZE_512KB:
507 size = 512;
508 break;
509 case I965_PGETBL_SIZE_1MB:
510 size = 1024;
511 break;
512 case I965_PGETBL_SIZE_2MB:
513 size = 2048;
514 break;
515 case I965_PGETBL_SIZE_1_5MB:
516 size = 1024 + 512;
517 break;
518 default:
519 dev_info(&intel_private.pcidev->dev,
520 "unknown page table size, assuming 512KB\n");
521 size = 512;
522 }
523 size += 4; /* add in BIOS popup space */
524 } else if (IS_G33 && !IS_IGD) {
525 /* G33's GTT size defined in gmch_ctrl */
526 switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
527 case G33_PGETBL_SIZE_1M:
528 size = 1024;
529 break;
530 case G33_PGETBL_SIZE_2M:
531 size = 2048;
532 break;
533 default:
534 dev_info(&agp_bridge->dev->dev,
535 "unknown page table size 0x%x, assuming 512KB\n",
536 (gmch_ctrl & G33_PGETBL_SIZE_MASK));
537 size = 512;
538 }
539 size += 4;
540 } else if (IS_G4X || IS_IGD) {
541 /* On 4 series hardware, GTT stolen is separate from graphics
542 * stolen, ignore it in stolen gtt entries counting. However,
543 * 4KB of the stolen memory doesn't get mapped to the GTT.
544 */
545 size = 4;
546 } else {
547 /* On previous hardware, the GTT size was just what was
548 * required to map the aperture.
549 */
550 size = agp_bridge->driver->fetch_size() + 4;
551 }
552
553 if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
554 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
555 switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
556 case I830_GMCH_GMS_STOLEN_512:
557 gtt_entries = KB(512) - KB(size);
558 break;
559 case I830_GMCH_GMS_STOLEN_1024:
560 gtt_entries = MB(1) - KB(size);
561 break;
562 case I830_GMCH_GMS_STOLEN_8192:
563 gtt_entries = MB(8) - KB(size);
564 break;
565 case I830_GMCH_GMS_LOCAL:
566 rdct = readb(intel_private.registers+I830_RDRAM_CHANNEL_TYPE);
567 gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
568 MB(ddt[I830_RDRAM_DDT(rdct)]);
569 local = 1;
570 break;
571 default:
572 gtt_entries = 0;
573 break;
574 }
575 } else {
576 switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
577 case I855_GMCH_GMS_STOLEN_1M:
578 gtt_entries = MB(1) - KB(size);
579 break;
580 case I855_GMCH_GMS_STOLEN_4M:
581 gtt_entries = MB(4) - KB(size);
582 break;
583 case I855_GMCH_GMS_STOLEN_8M:
584 gtt_entries = MB(8) - KB(size);
585 break;
586 case I855_GMCH_GMS_STOLEN_16M:
587 gtt_entries = MB(16) - KB(size);
588 break;
589 case I855_GMCH_GMS_STOLEN_32M:
590 gtt_entries = MB(32) - KB(size);
591 break;
592 case I915_GMCH_GMS_STOLEN_48M:
593 /* Check it's really I915G */
594 if (IS_I915 || IS_I965 || IS_G33 || IS_G4X)
595 gtt_entries = MB(48) - KB(size);
596 else
597 gtt_entries = 0;
598 break;
599 case I915_GMCH_GMS_STOLEN_64M:
600 /* Check it's really I915G */
601 if (IS_I915 || IS_I965 || IS_G33 || IS_G4X)
602 gtt_entries = MB(64) - KB(size);
603 else
604 gtt_entries = 0;
605 break;
606 case G33_GMCH_GMS_STOLEN_128M:
607 if (IS_G33 || IS_I965 || IS_G4X)
608 gtt_entries = MB(128) - KB(size);
609 else
610 gtt_entries = 0;
611 break;
612 case G33_GMCH_GMS_STOLEN_256M:
613 if (IS_G33 || IS_I965 || IS_G4X)
614 gtt_entries = MB(256) - KB(size);
615 else
616 gtt_entries = 0;
617 break;
618 case INTEL_GMCH_GMS_STOLEN_96M:
619 if (IS_I965 || IS_G4X)
620 gtt_entries = MB(96) - KB(size);
621 else
622 gtt_entries = 0;
623 break;
624 case INTEL_GMCH_GMS_STOLEN_160M:
625 if (IS_I965 || IS_G4X)
626 gtt_entries = MB(160) - KB(size);
627 else
628 gtt_entries = 0;
629 break;
630 case INTEL_GMCH_GMS_STOLEN_224M:
631 if (IS_I965 || IS_G4X)
632 gtt_entries = MB(224) - KB(size);
633 else
634 gtt_entries = 0;
635 break;
636 case INTEL_GMCH_GMS_STOLEN_352M:
637 if (IS_I965 || IS_G4X)
638 gtt_entries = MB(352) - KB(size);
639 else
640 gtt_entries = 0;
641 break;
642 default:
643 gtt_entries = 0;
644 break;
645 }
646 }
647 if (gtt_entries > 0) {
648 dev_info(&agp_bridge->dev->dev, "detected %dK %s memory\n",
649 gtt_entries / KB(1), local ? "local" : "stolen");
650 gtt_entries /= KB(4);
651 } else {
652 dev_info(&agp_bridge->dev->dev,
653 "no pre-allocated video memory detected\n");
654 gtt_entries = 0;
655 }
656
657 intel_private.gtt_entries = gtt_entries;
658 }
659
660 static void intel_i830_fini_flush(void)
661 {
662 kunmap(intel_private.i8xx_page);
663 intel_private.i8xx_flush_page = NULL;
664 unmap_page_from_agp(intel_private.i8xx_page);
665
666 __free_page(intel_private.i8xx_page);
667 intel_private.i8xx_page = NULL;
668 }
669
670 static void intel_i830_setup_flush(void)
671 {
672 /* return if we've already set the flush mechanism up */
673 if (intel_private.i8xx_page)
674 return;
675
676 intel_private.i8xx_page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
677 if (!intel_private.i8xx_page)
678 return;
679
680 /* make page uncached */
681 map_page_into_agp(intel_private.i8xx_page);
682
683 intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
684 if (!intel_private.i8xx_flush_page)
685 intel_i830_fini_flush();
686 }
687
688 static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
689 {
690 unsigned int *pg = intel_private.i8xx_flush_page;
691 int i;
692
693 for (i = 0; i < 256; i += 2)
694 *(pg + i) = i;
695
696 wmb();
697 }
698
699 /* The intel i830 automatically initializes the agp aperture during POST.
700 * Use the memory already set aside for in the GTT.
701 */
702 static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
703 {
704 int page_order;
705 struct aper_size_info_fixed *size;
706 int num_entries;
707 u32 temp;
708
709 size = agp_bridge->current_size;
710 page_order = size->page_order;
711 num_entries = size->num_entries;
712 agp_bridge->gatt_table_real = NULL;
713
714 pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
715 temp &= 0xfff80000;
716
717 intel_private.registers = ioremap(temp, 128 * 4096);
718 if (!intel_private.registers)
719 return -ENOMEM;
720
721 temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
722 global_cache_flush(); /* FIXME: ?? */
723
724 /* we have to call this as early as possible after the MMIO base address is known */
725 intel_i830_init_gtt_entries();
726
727 agp_bridge->gatt_table = NULL;
728
729 agp_bridge->gatt_bus_addr = temp;
730
731 return 0;
732 }
733
734 /* Return the gatt table to a sane state. Use the top of stolen
735 * memory for the GTT.
736 */
737 static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge)
738 {
739 return 0;
740 }
741
742 static int intel_i830_fetch_size(void)
743 {
744 u16 gmch_ctrl;
745 struct aper_size_info_fixed *values;
746
747 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
748
749 if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB &&
750 agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) {
751 /* 855GM/852GM/865G has 128MB aperture size */
752 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
753 agp_bridge->aperture_size_idx = 0;
754 return values[0].size;
755 }
756
757 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
758
759 if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
760 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
761 agp_bridge->aperture_size_idx = 0;
762 return values[0].size;
763 } else {
764 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + 1);
765 agp_bridge->aperture_size_idx = 1;
766 return values[1].size;
767 }
768
769 return 0;
770 }
771
772 static int intel_i830_configure(void)
773 {
774 struct aper_size_info_fixed *current_size;
775 u32 temp;
776 u16 gmch_ctrl;
777 int i;
778
779 current_size = A_SIZE_FIX(agp_bridge->current_size);
780
781 pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
782 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
783
784 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
785 gmch_ctrl |= I830_GMCH_ENABLED;
786 pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
787
788 writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
789 readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
790
791 if (agp_bridge->driver->needs_scratch_page) {
792 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
793 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
794 }
795 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI Posting. */
796 }
797
798 global_cache_flush();
799
800 intel_i830_setup_flush();
801 return 0;
802 }
803
804 static void intel_i830_cleanup(void)
805 {
806 iounmap(intel_private.registers);
807 }
808
809 static int intel_i830_insert_entries(struct agp_memory *mem, off_t pg_start,
810 int type)
811 {
812 int i, j, num_entries;
813 void *temp;
814 int ret = -EINVAL;
815 int mask_type;
816
817 if (mem->page_count == 0)
818 goto out;
819
820 temp = agp_bridge->current_size;
821 num_entries = A_SIZE_FIX(temp)->num_entries;
822
823 if (pg_start < intel_private.gtt_entries) {
824 dev_printk(KERN_DEBUG, &intel_private.pcidev->dev,
825 "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n",
826 pg_start, intel_private.gtt_entries);
827
828 dev_info(&intel_private.pcidev->dev,
829 "trying to insert into local/stolen memory\n");
830 goto out_err;
831 }
832
833 if ((pg_start + mem->page_count) > num_entries)
834 goto out_err;
835
836 /* The i830 can't check the GTT for entries since its read only,
837 * depend on the caller to make the correct offset decisions.
838 */
839
840 if (type != mem->type)
841 goto out_err;
842
843 mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
844
845 if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
846 mask_type != INTEL_AGP_CACHED_MEMORY)
847 goto out_err;
848
849 if (!mem->is_flushed)
850 global_cache_flush();
851
852 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
853 writel(agp_bridge->driver->mask_memory(agp_bridge,
854 mem->pages[i], mask_type),
855 intel_private.registers+I810_PTE_BASE+(j*4));
856 }
857 readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
858 agp_bridge->driver->tlb_flush(mem);
859
860 out:
861 ret = 0;
862 out_err:
863 mem->is_flushed = true;
864 return ret;
865 }
866
867 static int intel_i830_remove_entries(struct agp_memory *mem, off_t pg_start,
868 int type)
869 {
870 int i;
871
872 if (mem->page_count == 0)
873 return 0;
874
875 if (pg_start < intel_private.gtt_entries) {
876 dev_info(&intel_private.pcidev->dev,
877 "trying to disable local/stolen memory\n");
878 return -EINVAL;
879 }
880
881 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
882 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
883 }
884 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
885
886 agp_bridge->driver->tlb_flush(mem);
887 return 0;
888 }
889
890 static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count, int type)
891 {
892 if (type == AGP_PHYS_MEMORY)
893 return alloc_agpphysmem_i8xx(pg_count, type);
894 /* always return NULL for other allocation types for now */
895 return NULL;
896 }
897
898 static int intel_alloc_chipset_flush_resource(void)
899 {
900 int ret;
901 ret = pci_bus_alloc_resource(agp_bridge->dev->bus, &intel_private.ifp_resource, PAGE_SIZE,
902 PAGE_SIZE, PCIBIOS_MIN_MEM, 0,
903 pcibios_align_resource, agp_bridge->dev);
904
905 return ret;
906 }
907
908 static void intel_i915_setup_chipset_flush(void)
909 {
910 int ret;
911 u32 temp;
912
913 pci_read_config_dword(agp_bridge->dev, I915_IFPADDR, &temp);
914 if (!(temp & 0x1)) {
915 intel_alloc_chipset_flush_resource();
916 intel_private.resource_valid = 1;
917 pci_write_config_dword(agp_bridge->dev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
918 } else {
919 temp &= ~1;
920
921 intel_private.resource_valid = 1;
922 intel_private.ifp_resource.start = temp;
923 intel_private.ifp_resource.end = temp + PAGE_SIZE;
924 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
925 /* some BIOSes reserve this area in a pnp some don't */
926 if (ret)
927 intel_private.resource_valid = 0;
928 }
929 }
930
931 static void intel_i965_g33_setup_chipset_flush(void)
932 {
933 u32 temp_hi, temp_lo;
934 int ret;
935
936 pci_read_config_dword(agp_bridge->dev, I965_IFPADDR + 4, &temp_hi);
937 pci_read_config_dword(agp_bridge->dev, I965_IFPADDR, &temp_lo);
938
939 if (!(temp_lo & 0x1)) {
940
941 intel_alloc_chipset_flush_resource();
942
943 intel_private.resource_valid = 1;
944 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR + 4,
945 upper_32_bits(intel_private.ifp_resource.start));
946 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
947 } else {
948 u64 l64;
949
950 temp_lo &= ~0x1;
951 l64 = ((u64)temp_hi << 32) | temp_lo;
952
953 intel_private.resource_valid = 1;
954 intel_private.ifp_resource.start = l64;
955 intel_private.ifp_resource.end = l64 + PAGE_SIZE;
956 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
957 /* some BIOSes reserve this area in a pnp some don't */
958 if (ret)
959 intel_private.resource_valid = 0;
960 }
961 }
962
963 static void intel_i9xx_setup_flush(void)
964 {
965 /* return if already configured */
966 if (intel_private.ifp_resource.start)
967 return;
968
969 /* setup a resource for this object */
970 intel_private.ifp_resource.name = "Intel Flush Page";
971 intel_private.ifp_resource.flags = IORESOURCE_MEM;
972
973 /* Setup chipset flush for 915 */
974 if (IS_I965 || IS_G33 || IS_G4X) {
975 intel_i965_g33_setup_chipset_flush();
976 } else {
977 intel_i915_setup_chipset_flush();
978 }
979
980 if (intel_private.ifp_resource.start) {
981 intel_private.i9xx_flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE);
982 if (!intel_private.i9xx_flush_page)
983 dev_info(&intel_private.pcidev->dev, "can't ioremap flush page - no chipset flushing");
984 }
985 }
986
987 static int intel_i915_configure(void)
988 {
989 struct aper_size_info_fixed *current_size;
990 u32 temp;
991 u16 gmch_ctrl;
992 int i;
993
994 current_size = A_SIZE_FIX(agp_bridge->current_size);
995
996 pci_read_config_dword(intel_private.pcidev, I915_GMADDR, &temp);
997
998 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
999
1000 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
1001 gmch_ctrl |= I830_GMCH_ENABLED;
1002 pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
1003
1004 writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
1005 readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
1006
1007 if (agp_bridge->driver->needs_scratch_page) {
1008 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
1009 writel(agp_bridge->scratch_page, intel_private.gtt+i);
1010 }
1011 readl(intel_private.gtt+i-1); /* PCI Posting. */
1012 }
1013
1014 global_cache_flush();
1015
1016 intel_i9xx_setup_flush();
1017
1018 return 0;
1019 }
1020
1021 static void intel_i915_cleanup(void)
1022 {
1023 if (intel_private.i9xx_flush_page)
1024 iounmap(intel_private.i9xx_flush_page);
1025 if (intel_private.resource_valid)
1026 release_resource(&intel_private.ifp_resource);
1027 intel_private.ifp_resource.start = 0;
1028 intel_private.resource_valid = 0;
1029 iounmap(intel_private.gtt);
1030 iounmap(intel_private.registers);
1031 }
1032
1033 static void intel_i915_chipset_flush(struct agp_bridge_data *bridge)
1034 {
1035 if (intel_private.i9xx_flush_page)
1036 writel(1, intel_private.i9xx_flush_page);
1037 }
1038
1039 static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start,
1040 int type)
1041 {
1042 int i, j, num_entries;
1043 void *temp;
1044 int ret = -EINVAL;
1045 int mask_type;
1046
1047 if (mem->page_count == 0)
1048 goto out;
1049
1050 temp = agp_bridge->current_size;
1051 num_entries = A_SIZE_FIX(temp)->num_entries;
1052
1053 if (pg_start < intel_private.gtt_entries) {
1054 dev_printk(KERN_DEBUG, &intel_private.pcidev->dev,
1055 "pg_start == 0x%.8lx, intel_private.gtt_entries == 0x%.8x\n",
1056 pg_start, intel_private.gtt_entries);
1057
1058 dev_info(&intel_private.pcidev->dev,
1059 "trying to insert into local/stolen memory\n");
1060 goto out_err;
1061 }
1062
1063 if ((pg_start + mem->page_count) > num_entries)
1064 goto out_err;
1065
1066 /* The i915 can't check the GTT for entries since its read only,
1067 * depend on the caller to make the correct offset decisions.
1068 */
1069
1070 if (type != mem->type)
1071 goto out_err;
1072
1073 mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
1074
1075 if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
1076 mask_type != INTEL_AGP_CACHED_MEMORY)
1077 goto out_err;
1078
1079 if (!mem->is_flushed)
1080 global_cache_flush();
1081
1082 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
1083 writel(agp_bridge->driver->mask_memory(agp_bridge,
1084 mem->pages[i], mask_type), intel_private.gtt+j);
1085 }
1086
1087 readl(intel_private.gtt+j-1);
1088 agp_bridge->driver->tlb_flush(mem);
1089
1090 out:
1091 ret = 0;
1092 out_err:
1093 mem->is_flushed = true;
1094 return ret;
1095 }
1096
1097 static int intel_i915_remove_entries(struct agp_memory *mem, off_t pg_start,
1098 int type)
1099 {
1100 int i;
1101
1102 if (mem->page_count == 0)
1103 return 0;
1104
1105 if (pg_start < intel_private.gtt_entries) {
1106 dev_info(&intel_private.pcidev->dev,
1107 "trying to disable local/stolen memory\n");
1108 return -EINVAL;
1109 }
1110
1111 for (i = pg_start; i < (mem->page_count + pg_start); i++)
1112 writel(agp_bridge->scratch_page, intel_private.gtt+i);
1113
1114 readl(intel_private.gtt+i-1);
1115
1116 agp_bridge->driver->tlb_flush(mem);
1117 return 0;
1118 }
1119
1120 /* Return the aperture size by just checking the resource length. The effect
1121 * described in the spec of the MSAC registers is just changing of the
1122 * resource size.
1123 */
1124 static int intel_i9xx_fetch_size(void)
1125 {
1126 int num_sizes = ARRAY_SIZE(intel_i830_sizes);
1127 int aper_size; /* size in megabytes */
1128 int i;
1129
1130 aper_size = pci_resource_len(intel_private.pcidev, 2) / MB(1);
1131
1132 for (i = 0; i < num_sizes; i++) {
1133 if (aper_size == intel_i830_sizes[i].size) {
1134 agp_bridge->current_size = intel_i830_sizes + i;
1135 agp_bridge->previous_size = agp_bridge->current_size;
1136 return aper_size;
1137 }
1138 }
1139
1140 return 0;
1141 }
1142
1143 /* The intel i915 automatically initializes the agp aperture during POST.
1144 * Use the memory already set aside for in the GTT.
1145 */
1146 static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
1147 {
1148 int page_order;
1149 struct aper_size_info_fixed *size;
1150 int num_entries;
1151 u32 temp, temp2;
1152 int gtt_map_size = 256 * 1024;
1153
1154 size = agp_bridge->current_size;
1155 page_order = size->page_order;
1156 num_entries = size->num_entries;
1157 agp_bridge->gatt_table_real = NULL;
1158
1159 pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1160 pci_read_config_dword(intel_private.pcidev, I915_PTEADDR, &temp2);
1161
1162 if (IS_G33)
1163 gtt_map_size = 1024 * 1024; /* 1M on G33 */
1164 intel_private.gtt = ioremap(temp2, gtt_map_size);
1165 if (!intel_private.gtt)
1166 return -ENOMEM;
1167
1168 temp &= 0xfff80000;
1169
1170 intel_private.registers = ioremap(temp, 128 * 4096);
1171 if (!intel_private.registers) {
1172 iounmap(intel_private.gtt);
1173 return -ENOMEM;
1174 }
1175
1176 temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1177 global_cache_flush(); /* FIXME: ? */
1178
1179 /* we have to call this as early as possible after the MMIO base address is known */
1180 intel_i830_init_gtt_entries();
1181
1182 agp_bridge->gatt_table = NULL;
1183
1184 agp_bridge->gatt_bus_addr = temp;
1185
1186 return 0;
1187 }
1188
1189 /*
1190 * The i965 supports 36-bit physical addresses, but to keep
1191 * the format of the GTT the same, the bits that don't fit
1192 * in a 32-bit word are shifted down to bits 4..7.
1193 *
1194 * Gcc is smart enough to notice that "(addr >> 28) & 0xf0"
1195 * is always zero on 32-bit architectures, so no need to make
1196 * this conditional.
1197 */
1198 static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
1199 struct page *page, int type)
1200 {
1201 dma_addr_t addr = phys_to_gart(page_to_phys(page));
1202 /* Shift high bits down */
1203 addr |= (addr >> 28) & 0xf0;
1204
1205 /* Type checking must be done elsewhere */
1206 return addr | bridge->driver->masks[type].mask;
1207 }
1208
1209 static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
1210 {
1211 switch (agp_bridge->dev->device) {
1212 case PCI_DEVICE_ID_INTEL_GM45_HB:
1213 case PCI_DEVICE_ID_INTEL_IGD_E_HB:
1214 case PCI_DEVICE_ID_INTEL_Q45_HB:
1215 case PCI_DEVICE_ID_INTEL_G45_HB:
1216 case PCI_DEVICE_ID_INTEL_G41_HB:
1217 case PCI_DEVICE_ID_INTEL_IGDNG_D_HB:
1218 case PCI_DEVICE_ID_INTEL_IGDNG_M_HB:
1219 *gtt_offset = *gtt_size = MB(2);
1220 break;
1221 default:
1222 *gtt_offset = *gtt_size = KB(512);
1223 }
1224 }
1225
1226 /* The intel i965 automatically initializes the agp aperture during POST.
1227 * Use the memory already set aside for in the GTT.
1228 */
1229 static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
1230 {
1231 int page_order;
1232 struct aper_size_info_fixed *size;
1233 int num_entries;
1234 u32 temp;
1235 int gtt_offset, gtt_size;
1236
1237 size = agp_bridge->current_size;
1238 page_order = size->page_order;
1239 num_entries = size->num_entries;
1240 agp_bridge->gatt_table_real = NULL;
1241
1242 pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1243
1244 temp &= 0xfff00000;
1245
1246 intel_i965_get_gtt_range(&gtt_offset, &gtt_size);
1247
1248 intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size);
1249
1250 if (!intel_private.gtt)
1251 return -ENOMEM;
1252
1253 intel_private.registers = ioremap(temp, 128 * 4096);
1254 if (!intel_private.registers) {
1255 iounmap(intel_private.gtt);
1256 return -ENOMEM;
1257 }
1258
1259 temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1260 global_cache_flush(); /* FIXME: ? */
1261
1262 /* we have to call this as early as possible after the MMIO base address is known */
1263 intel_i830_init_gtt_entries();
1264
1265 agp_bridge->gatt_table = NULL;
1266
1267 agp_bridge->gatt_bus_addr = temp;
1268
1269 return 0;
1270 }
1271
1272
1273 static int intel_fetch_size(void)
1274 {
1275 int i;
1276 u16 temp;
1277 struct aper_size_info_16 *values;
1278
1279 pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
1280 values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
1281
1282 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1283 if (temp == values[i].size_value) {
1284 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
1285 agp_bridge->aperture_size_idx = i;
1286 return values[i].size;
1287 }
1288 }
1289
1290 return 0;
1291 }
1292
1293 static int __intel_8xx_fetch_size(u8 temp)
1294 {
1295 int i;
1296 struct aper_size_info_8 *values;
1297
1298 values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
1299
1300 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1301 if (temp == values[i].size_value) {
1302 agp_bridge->previous_size =
1303 agp_bridge->current_size = (void *) (values + i);
1304 agp_bridge->aperture_size_idx = i;
1305 return values[i].size;
1306 }
1307 }
1308 return 0;
1309 }
1310
1311 static int intel_8xx_fetch_size(void)
1312 {
1313 u8 temp;
1314
1315 pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1316 return __intel_8xx_fetch_size(temp);
1317 }
1318
1319 static int intel_815_fetch_size(void)
1320 {
1321 u8 temp;
1322
1323 /* Intel 815 chipsets have a _weird_ APSIZE register with only
1324 * one non-reserved bit, so mask the others out ... */
1325 pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1326 temp &= (1 << 3);
1327
1328 return __intel_8xx_fetch_size(temp);
1329 }
1330
1331 static void intel_tlbflush(struct agp_memory *mem)
1332 {
1333 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
1334 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1335 }
1336
1337
1338 static void intel_8xx_tlbflush(struct agp_memory *mem)
1339 {
1340 u32 temp;
1341 pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1342 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp & ~(1 << 7));
1343 pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1344 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp | (1 << 7));
1345 }
1346
1347
1348 static void intel_cleanup(void)
1349 {
1350 u16 temp;
1351 struct aper_size_info_16 *previous_size;
1352
1353 previous_size = A_SIZE_16(agp_bridge->previous_size);
1354 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1355 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1356 pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1357 }
1358
1359
1360 static void intel_8xx_cleanup(void)
1361 {
1362 u16 temp;
1363 struct aper_size_info_8 *previous_size;
1364
1365 previous_size = A_SIZE_8(agp_bridge->previous_size);
1366 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1367 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1368 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1369 }
1370
1371
1372 static int intel_configure(void)
1373 {
1374 u32 temp;
1375 u16 temp2;
1376 struct aper_size_info_16 *current_size;
1377
1378 current_size = A_SIZE_16(agp_bridge->current_size);
1379
1380 /* aperture size */
1381 pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1382
1383 /* address to map to */
1384 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1385 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1386
1387 /* attbase - aperture base */
1388 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1389
1390 /* agpctrl */
1391 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1392
1393 /* paccfg/nbxcfg */
1394 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1395 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
1396 (temp2 & ~(1 << 10)) | (1 << 9));
1397 /* clear any possible error conditions */
1398 pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
1399 return 0;
1400 }
1401
1402 static int intel_815_configure(void)
1403 {
1404 u32 temp, addr;
1405 u8 temp2;
1406 struct aper_size_info_8 *current_size;
1407
1408 /* attbase - aperture base */
1409 /* the Intel 815 chipset spec. says that bits 29-31 in the
1410 * ATTBASE register are reserved -> try not to write them */
1411 if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
1412 dev_emerg(&agp_bridge->dev->dev, "gatt bus addr too high");
1413 return -EINVAL;
1414 }
1415
1416 current_size = A_SIZE_8(agp_bridge->current_size);
1417
1418 /* aperture size */
1419 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1420 current_size->size_value);
1421
1422 /* address to map to */
1423 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1424 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1425
1426 pci_read_config_dword(agp_bridge->dev, INTEL_ATTBASE, &addr);
1427 addr &= INTEL_815_ATTBASE_MASK;
1428 addr |= agp_bridge->gatt_bus_addr;
1429 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, addr);
1430
1431 /* agpctrl */
1432 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1433
1434 /* apcont */
1435 pci_read_config_byte(agp_bridge->dev, INTEL_815_APCONT, &temp2);
1436 pci_write_config_byte(agp_bridge->dev, INTEL_815_APCONT, temp2 | (1 << 1));
1437
1438 /* clear any possible error conditions */
1439 /* Oddness : this chipset seems to have no ERRSTS register ! */
1440 return 0;
1441 }
1442
1443 static void intel_820_tlbflush(struct agp_memory *mem)
1444 {
1445 return;
1446 }
1447
1448 static void intel_820_cleanup(void)
1449 {
1450 u8 temp;
1451 struct aper_size_info_8 *previous_size;
1452
1453 previous_size = A_SIZE_8(agp_bridge->previous_size);
1454 pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp);
1455 pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR,
1456 temp & ~(1 << 1));
1457 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1458 previous_size->size_value);
1459 }
1460
1461
1462 static int intel_820_configure(void)
1463 {
1464 u32 temp;
1465 u8 temp2;
1466 struct aper_size_info_8 *current_size;
1467
1468 current_size = A_SIZE_8(agp_bridge->current_size);
1469
1470 /* aperture size */
1471 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1472
1473 /* address to map to */
1474 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1475 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1476
1477 /* attbase - aperture base */
1478 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1479
1480 /* agpctrl */
1481 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1482
1483 /* global enable aperture access */
1484 /* This flag is not accessed through MCHCFG register as in */
1485 /* i850 chipset. */
1486 pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp2);
1487 pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR, temp2 | (1 << 1));
1488 /* clear any possible AGP-related error conditions */
1489 pci_write_config_word(agp_bridge->dev, INTEL_I820_ERRSTS, 0x001c);
1490 return 0;
1491 }
1492
1493 static int intel_840_configure(void)
1494 {
1495 u32 temp;
1496 u16 temp2;
1497 struct aper_size_info_8 *current_size;
1498
1499 current_size = A_SIZE_8(agp_bridge->current_size);
1500
1501 /* aperture size */
1502 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1503
1504 /* address to map to */
1505 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1506 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1507
1508 /* attbase - aperture base */
1509 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1510
1511 /* agpctrl */
1512 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1513
1514 /* mcgcfg */
1515 pci_read_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, &temp2);
1516 pci_write_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, temp2 | (1 << 9));
1517 /* clear any possible error conditions */
1518 pci_write_config_word(agp_bridge->dev, INTEL_I840_ERRSTS, 0xc000);
1519 return 0;
1520 }
1521
1522 static int intel_845_configure(void)
1523 {
1524 u32 temp;
1525 u8 temp2;
1526 struct aper_size_info_8 *current_size;
1527
1528 current_size = A_SIZE_8(agp_bridge->current_size);
1529
1530 /* aperture size */
1531 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1532
1533 if (agp_bridge->apbase_config != 0) {
1534 pci_write_config_dword(agp_bridge->dev, AGP_APBASE,
1535 agp_bridge->apbase_config);
1536 } else {
1537 /* address to map to */
1538 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1539 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1540 agp_bridge->apbase_config = temp;
1541 }
1542
1543 /* attbase - aperture base */
1544 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1545
1546 /* agpctrl */
1547 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1548
1549 /* agpm */
1550 pci_read_config_byte(agp_bridge->dev, INTEL_I845_AGPM, &temp2);
1551 pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
1552 /* clear any possible error conditions */
1553 pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
1554
1555 intel_i830_setup_flush();
1556 return 0;
1557 }
1558
1559 static int intel_850_configure(void)
1560 {
1561 u32 temp;
1562 u16 temp2;
1563 struct aper_size_info_8 *current_size;
1564
1565 current_size = A_SIZE_8(agp_bridge->current_size);
1566
1567 /* aperture size */
1568 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1569
1570 /* address to map to */
1571 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1572 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1573
1574 /* attbase - aperture base */
1575 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1576
1577 /* agpctrl */
1578 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1579
1580 /* mcgcfg */
1581 pci_read_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, &temp2);
1582 pci_write_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, temp2 | (1 << 9));
1583 /* clear any possible AGP-related error conditions */
1584 pci_write_config_word(agp_bridge->dev, INTEL_I850_ERRSTS, 0x001c);
1585 return 0;
1586 }
1587
1588 static int intel_860_configure(void)
1589 {
1590 u32 temp;
1591 u16 temp2;
1592 struct aper_size_info_8 *current_size;
1593
1594 current_size = A_SIZE_8(agp_bridge->current_size);
1595
1596 /* aperture size */
1597 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1598
1599 /* address to map to */
1600 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1601 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1602
1603 /* attbase - aperture base */
1604 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1605
1606 /* agpctrl */
1607 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1608
1609 /* mcgcfg */
1610 pci_read_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, &temp2);
1611 pci_write_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, temp2 | (1 << 9));
1612 /* clear any possible AGP-related error conditions */
1613 pci_write_config_word(agp_bridge->dev, INTEL_I860_ERRSTS, 0xf700);
1614 return 0;
1615 }
1616
1617 static int intel_830mp_configure(void)
1618 {
1619 u32 temp;
1620 u16 temp2;
1621 struct aper_size_info_8 *current_size;
1622
1623 current_size = A_SIZE_8(agp_bridge->current_size);
1624
1625 /* aperture size */
1626 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1627
1628 /* address to map to */
1629 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1630 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1631
1632 /* attbase - aperture base */
1633 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1634
1635 /* agpctrl */
1636 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1637
1638 /* gmch */
1639 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1640 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp2 | (1 << 9));
1641 /* clear any possible AGP-related error conditions */
1642 pci_write_config_word(agp_bridge->dev, INTEL_I830_ERRSTS, 0x1c);
1643 return 0;
1644 }
1645
1646 static int intel_7505_configure(void)
1647 {
1648 u32 temp;
1649 u16 temp2;
1650 struct aper_size_info_8 *current_size;
1651
1652 current_size = A_SIZE_8(agp_bridge->current_size);
1653
1654 /* aperture size */
1655 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1656
1657 /* address to map to */
1658 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1659 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1660
1661 /* attbase - aperture base */
1662 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1663
1664 /* agpctrl */
1665 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1666
1667 /* mchcfg */
1668 pci_read_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, &temp2);
1669 pci_write_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, temp2 | (1 << 9));
1670
1671 return 0;
1672 }
1673
1674 /* Setup function */
1675 static const struct gatt_mask intel_generic_masks[] =
1676 {
1677 {.mask = 0x00000017, .type = 0}
1678 };
1679
1680 static const struct aper_size_info_8 intel_815_sizes[2] =
1681 {
1682 {64, 16384, 4, 0},
1683 {32, 8192, 3, 8},
1684 };
1685
1686 static const struct aper_size_info_8 intel_8xx_sizes[7] =
1687 {
1688 {256, 65536, 6, 0},
1689 {128, 32768, 5, 32},
1690 {64, 16384, 4, 48},
1691 {32, 8192, 3, 56},
1692 {16, 4096, 2, 60},
1693 {8, 2048, 1, 62},
1694 {4, 1024, 0, 63}
1695 };
1696
1697 static const struct aper_size_info_16 intel_generic_sizes[7] =
1698 {
1699 {256, 65536, 6, 0},
1700 {128, 32768, 5, 32},
1701 {64, 16384, 4, 48},
1702 {32, 8192, 3, 56},
1703 {16, 4096, 2, 60},
1704 {8, 2048, 1, 62},
1705 {4, 1024, 0, 63}
1706 };
1707
1708 static const struct aper_size_info_8 intel_830mp_sizes[4] =
1709 {
1710 {256, 65536, 6, 0},
1711 {128, 32768, 5, 32},
1712 {64, 16384, 4, 48},
1713 {32, 8192, 3, 56}
1714 };
1715
1716 static const struct agp_bridge_driver intel_generic_driver = {
1717 .owner = THIS_MODULE,
1718 .aperture_sizes = intel_generic_sizes,
1719 .size_type = U16_APER_SIZE,
1720 .num_aperture_sizes = 7,
1721 .configure = intel_configure,
1722 .fetch_size = intel_fetch_size,
1723 .cleanup = intel_cleanup,
1724 .tlb_flush = intel_tlbflush,
1725 .mask_memory = agp_generic_mask_memory,
1726 .masks = intel_generic_masks,
1727 .agp_enable = agp_generic_enable,
1728 .cache_flush = global_cache_flush,
1729 .create_gatt_table = agp_generic_create_gatt_table,
1730 .free_gatt_table = agp_generic_free_gatt_table,
1731 .insert_memory = agp_generic_insert_memory,
1732 .remove_memory = agp_generic_remove_memory,
1733 .alloc_by_type = agp_generic_alloc_by_type,
1734 .free_by_type = agp_generic_free_by_type,
1735 .agp_alloc_page = agp_generic_alloc_page,
1736 .agp_alloc_pages = agp_generic_alloc_pages,
1737 .agp_destroy_page = agp_generic_destroy_page,
1738 .agp_destroy_pages = agp_generic_destroy_pages,
1739 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1740 };
1741
1742 static const struct agp_bridge_driver intel_810_driver = {
1743 .owner = THIS_MODULE,
1744 .aperture_sizes = intel_i810_sizes,
1745 .size_type = FIXED_APER_SIZE,
1746 .num_aperture_sizes = 2,
1747 .needs_scratch_page = true,
1748 .configure = intel_i810_configure,
1749 .fetch_size = intel_i810_fetch_size,
1750 .cleanup = intel_i810_cleanup,
1751 .tlb_flush = intel_i810_tlbflush,
1752 .mask_memory = intel_i810_mask_memory,
1753 .masks = intel_i810_masks,
1754 .agp_enable = intel_i810_agp_enable,
1755 .cache_flush = global_cache_flush,
1756 .create_gatt_table = agp_generic_create_gatt_table,
1757 .free_gatt_table = agp_generic_free_gatt_table,
1758 .insert_memory = intel_i810_insert_entries,
1759 .remove_memory = intel_i810_remove_entries,
1760 .alloc_by_type = intel_i810_alloc_by_type,
1761 .free_by_type = intel_i810_free_by_type,
1762 .agp_alloc_page = agp_generic_alloc_page,
1763 .agp_alloc_pages = agp_generic_alloc_pages,
1764 .agp_destroy_page = agp_generic_destroy_page,
1765 .agp_destroy_pages = agp_generic_destroy_pages,
1766 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1767 };
1768
1769 static const struct agp_bridge_driver intel_815_driver = {
1770 .owner = THIS_MODULE,
1771 .aperture_sizes = intel_815_sizes,
1772 .size_type = U8_APER_SIZE,
1773 .num_aperture_sizes = 2,
1774 .configure = intel_815_configure,
1775 .fetch_size = intel_815_fetch_size,
1776 .cleanup = intel_8xx_cleanup,
1777 .tlb_flush = intel_8xx_tlbflush,
1778 .mask_memory = agp_generic_mask_memory,
1779 .masks = intel_generic_masks,
1780 .agp_enable = agp_generic_enable,
1781 .cache_flush = global_cache_flush,
1782 .create_gatt_table = agp_generic_create_gatt_table,
1783 .free_gatt_table = agp_generic_free_gatt_table,
1784 .insert_memory = agp_generic_insert_memory,
1785 .remove_memory = agp_generic_remove_memory,
1786 .alloc_by_type = agp_generic_alloc_by_type,
1787 .free_by_type = agp_generic_free_by_type,
1788 .agp_alloc_page = agp_generic_alloc_page,
1789 .agp_alloc_pages = agp_generic_alloc_pages,
1790 .agp_destroy_page = agp_generic_destroy_page,
1791 .agp_destroy_pages = agp_generic_destroy_pages,
1792 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1793 };
1794
1795 static const struct agp_bridge_driver intel_830_driver = {
1796 .owner = THIS_MODULE,
1797 .aperture_sizes = intel_i830_sizes,
1798 .size_type = FIXED_APER_SIZE,
1799 .num_aperture_sizes = 4,
1800 .needs_scratch_page = true,
1801 .configure = intel_i830_configure,
1802 .fetch_size = intel_i830_fetch_size,
1803 .cleanup = intel_i830_cleanup,
1804 .tlb_flush = intel_i810_tlbflush,
1805 .mask_memory = intel_i810_mask_memory,
1806 .masks = intel_i810_masks,
1807 .agp_enable = intel_i810_agp_enable,
1808 .cache_flush = global_cache_flush,
1809 .create_gatt_table = intel_i830_create_gatt_table,
1810 .free_gatt_table = intel_i830_free_gatt_table,
1811 .insert_memory = intel_i830_insert_entries,
1812 .remove_memory = intel_i830_remove_entries,
1813 .alloc_by_type = intel_i830_alloc_by_type,
1814 .free_by_type = intel_i810_free_by_type,
1815 .agp_alloc_page = agp_generic_alloc_page,
1816 .agp_alloc_pages = agp_generic_alloc_pages,
1817 .agp_destroy_page = agp_generic_destroy_page,
1818 .agp_destroy_pages = agp_generic_destroy_pages,
1819 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
1820 .chipset_flush = intel_i830_chipset_flush,
1821 };
1822
1823 static const struct agp_bridge_driver intel_820_driver = {
1824 .owner = THIS_MODULE,
1825 .aperture_sizes = intel_8xx_sizes,
1826 .size_type = U8_APER_SIZE,
1827 .num_aperture_sizes = 7,
1828 .configure = intel_820_configure,
1829 .fetch_size = intel_8xx_fetch_size,
1830 .cleanup = intel_820_cleanup,
1831 .tlb_flush = intel_820_tlbflush,
1832 .mask_memory = agp_generic_mask_memory,
1833 .masks = intel_generic_masks,
1834 .agp_enable = agp_generic_enable,
1835 .cache_flush = global_cache_flush,
1836 .create_gatt_table = agp_generic_create_gatt_table,
1837 .free_gatt_table = agp_generic_free_gatt_table,
1838 .insert_memory = agp_generic_insert_memory,
1839 .remove_memory = agp_generic_remove_memory,
1840 .alloc_by_type = agp_generic_alloc_by_type,
1841 .free_by_type = agp_generic_free_by_type,
1842 .agp_alloc_page = agp_generic_alloc_page,
1843 .agp_alloc_pages = agp_generic_alloc_pages,
1844 .agp_destroy_page = agp_generic_destroy_page,
1845 .agp_destroy_pages = agp_generic_destroy_pages,
1846 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1847 };
1848
1849 static const struct agp_bridge_driver intel_830mp_driver = {
1850 .owner = THIS_MODULE,
1851 .aperture_sizes = intel_830mp_sizes,
1852 .size_type = U8_APER_SIZE,
1853 .num_aperture_sizes = 4,
1854 .configure = intel_830mp_configure,
1855 .fetch_size = intel_8xx_fetch_size,
1856 .cleanup = intel_8xx_cleanup,
1857 .tlb_flush = intel_8xx_tlbflush,
1858 .mask_memory = agp_generic_mask_memory,
1859 .masks = intel_generic_masks,
1860 .agp_enable = agp_generic_enable,
1861 .cache_flush = global_cache_flush,
1862 .create_gatt_table = agp_generic_create_gatt_table,
1863 .free_gatt_table = agp_generic_free_gatt_table,
1864 .insert_memory = agp_generic_insert_memory,
1865 .remove_memory = agp_generic_remove_memory,
1866 .alloc_by_type = agp_generic_alloc_by_type,
1867 .free_by_type = agp_generic_free_by_type,
1868 .agp_alloc_page = agp_generic_alloc_page,
1869 .agp_alloc_pages = agp_generic_alloc_pages,
1870 .agp_destroy_page = agp_generic_destroy_page,
1871 .agp_destroy_pages = agp_generic_destroy_pages,
1872 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1873 };
1874
1875 static const struct agp_bridge_driver intel_840_driver = {
1876 .owner = THIS_MODULE,
1877 .aperture_sizes = intel_8xx_sizes,
1878 .size_type = U8_APER_SIZE,
1879 .num_aperture_sizes = 7,
1880 .configure = intel_840_configure,
1881 .fetch_size = intel_8xx_fetch_size,
1882 .cleanup = intel_8xx_cleanup,
1883 .tlb_flush = intel_8xx_tlbflush,
1884 .mask_memory = agp_generic_mask_memory,
1885 .masks = intel_generic_masks,
1886 .agp_enable = agp_generic_enable,
1887 .cache_flush = global_cache_flush,
1888 .create_gatt_table = agp_generic_create_gatt_table,
1889 .free_gatt_table = agp_generic_free_gatt_table,
1890 .insert_memory = agp_generic_insert_memory,
1891 .remove_memory = agp_generic_remove_memory,
1892 .alloc_by_type = agp_generic_alloc_by_type,
1893 .free_by_type = agp_generic_free_by_type,
1894 .agp_alloc_page = agp_generic_alloc_page,
1895 .agp_alloc_pages = agp_generic_alloc_pages,
1896 .agp_destroy_page = agp_generic_destroy_page,
1897 .agp_destroy_pages = agp_generic_destroy_pages,
1898 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1899 };
1900
1901 static const struct agp_bridge_driver intel_845_driver = {
1902 .owner = THIS_MODULE,
1903 .aperture_sizes = intel_8xx_sizes,
1904 .size_type = U8_APER_SIZE,
1905 .num_aperture_sizes = 7,
1906 .configure = intel_845_configure,
1907 .fetch_size = intel_8xx_fetch_size,
1908 .cleanup = intel_8xx_cleanup,
1909 .tlb_flush = intel_8xx_tlbflush,
1910 .mask_memory = agp_generic_mask_memory,
1911 .masks = intel_generic_masks,
1912 .agp_enable = agp_generic_enable,
1913 .cache_flush = global_cache_flush,
1914 .create_gatt_table = agp_generic_create_gatt_table,
1915 .free_gatt_table = agp_generic_free_gatt_table,
1916 .insert_memory = agp_generic_insert_memory,
1917 .remove_memory = agp_generic_remove_memory,
1918 .alloc_by_type = agp_generic_alloc_by_type,
1919 .free_by_type = agp_generic_free_by_type,
1920 .agp_alloc_page = agp_generic_alloc_page,
1921 .agp_alloc_pages = agp_generic_alloc_pages,
1922 .agp_destroy_page = agp_generic_destroy_page,
1923 .agp_destroy_pages = agp_generic_destroy_pages,
1924 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1925 .chipset_flush = intel_i830_chipset_flush,
1926 };
1927
1928 static const struct agp_bridge_driver intel_850_driver = {
1929 .owner = THIS_MODULE,
1930 .aperture_sizes = intel_8xx_sizes,
1931 .size_type = U8_APER_SIZE,
1932 .num_aperture_sizes = 7,
1933 .configure = intel_850_configure,
1934 .fetch_size = intel_8xx_fetch_size,
1935 .cleanup = intel_8xx_cleanup,
1936 .tlb_flush = intel_8xx_tlbflush,
1937 .mask_memory = agp_generic_mask_memory,
1938 .masks = intel_generic_masks,
1939 .agp_enable = agp_generic_enable,
1940 .cache_flush = global_cache_flush,
1941 .create_gatt_table = agp_generic_create_gatt_table,
1942 .free_gatt_table = agp_generic_free_gatt_table,
1943 .insert_memory = agp_generic_insert_memory,
1944 .remove_memory = agp_generic_remove_memory,
1945 .alloc_by_type = agp_generic_alloc_by_type,
1946 .free_by_type = agp_generic_free_by_type,
1947 .agp_alloc_page = agp_generic_alloc_page,
1948 .agp_alloc_pages = agp_generic_alloc_pages,
1949 .agp_destroy_page = agp_generic_destroy_page,
1950 .agp_destroy_pages = agp_generic_destroy_pages,
1951 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1952 };
1953
1954 static const struct agp_bridge_driver intel_860_driver = {
1955 .owner = THIS_MODULE,
1956 .aperture_sizes = intel_8xx_sizes,
1957 .size_type = U8_APER_SIZE,
1958 .num_aperture_sizes = 7,
1959 .configure = intel_860_configure,
1960 .fetch_size = intel_8xx_fetch_size,
1961 .cleanup = intel_8xx_cleanup,
1962 .tlb_flush = intel_8xx_tlbflush,
1963 .mask_memory = agp_generic_mask_memory,
1964 .masks = intel_generic_masks,
1965 .agp_enable = agp_generic_enable,
1966 .cache_flush = global_cache_flush,
1967 .create_gatt_table = agp_generic_create_gatt_table,
1968 .free_gatt_table = agp_generic_free_gatt_table,
1969 .insert_memory = agp_generic_insert_memory,
1970 .remove_memory = agp_generic_remove_memory,
1971 .alloc_by_type = agp_generic_alloc_by_type,
1972 .free_by_type = agp_generic_free_by_type,
1973 .agp_alloc_page = agp_generic_alloc_page,
1974 .agp_alloc_pages = agp_generic_alloc_pages,
1975 .agp_destroy_page = agp_generic_destroy_page,
1976 .agp_destroy_pages = agp_generic_destroy_pages,
1977 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1978 };
1979
1980 static const struct agp_bridge_driver intel_915_driver = {
1981 .owner = THIS_MODULE,
1982 .aperture_sizes = intel_i830_sizes,
1983 .size_type = FIXED_APER_SIZE,
1984 .num_aperture_sizes = 4,
1985 .needs_scratch_page = true,
1986 .configure = intel_i915_configure,
1987 .fetch_size = intel_i9xx_fetch_size,
1988 .cleanup = intel_i915_cleanup,
1989 .tlb_flush = intel_i810_tlbflush,
1990 .mask_memory = intel_i810_mask_memory,
1991 .masks = intel_i810_masks,
1992 .agp_enable = intel_i810_agp_enable,
1993 .cache_flush = global_cache_flush,
1994 .create_gatt_table = intel_i915_create_gatt_table,
1995 .free_gatt_table = intel_i830_free_gatt_table,
1996 .insert_memory = intel_i915_insert_entries,
1997 .remove_memory = intel_i915_remove_entries,
1998 .alloc_by_type = intel_i830_alloc_by_type,
1999 .free_by_type = intel_i810_free_by_type,
2000 .agp_alloc_page = agp_generic_alloc_page,
2001 .agp_alloc_pages = agp_generic_alloc_pages,
2002 .agp_destroy_page = agp_generic_destroy_page,
2003 .agp_destroy_pages = agp_generic_destroy_pages,
2004 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
2005 .chipset_flush = intel_i915_chipset_flush,
2006 };
2007
2008 static const struct agp_bridge_driver intel_i965_driver = {
2009 .owner = THIS_MODULE,
2010 .aperture_sizes = intel_i830_sizes,
2011 .size_type = FIXED_APER_SIZE,
2012 .num_aperture_sizes = 4,
2013 .needs_scratch_page = true,
2014 .configure = intel_i915_configure,
2015 .fetch_size = intel_i9xx_fetch_size,
2016 .cleanup = intel_i915_cleanup,
2017 .tlb_flush = intel_i810_tlbflush,
2018 .mask_memory = intel_i965_mask_memory,
2019 .masks = intel_i810_masks,
2020 .agp_enable = intel_i810_agp_enable,
2021 .cache_flush = global_cache_flush,
2022 .create_gatt_table = intel_i965_create_gatt_table,
2023 .free_gatt_table = intel_i830_free_gatt_table,
2024 .insert_memory = intel_i915_insert_entries,
2025 .remove_memory = intel_i915_remove_entries,
2026 .alloc_by_type = intel_i830_alloc_by_type,
2027 .free_by_type = intel_i810_free_by_type,
2028 .agp_alloc_page = agp_generic_alloc_page,
2029 .agp_alloc_pages = agp_generic_alloc_pages,
2030 .agp_destroy_page = agp_generic_destroy_page,
2031 .agp_destroy_pages = agp_generic_destroy_pages,
2032 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
2033 .chipset_flush = intel_i915_chipset_flush,
2034 };
2035
2036 static const struct agp_bridge_driver intel_7505_driver = {
2037 .owner = THIS_MODULE,
2038 .aperture_sizes = intel_8xx_sizes,
2039 .size_type = U8_APER_SIZE,
2040 .num_aperture_sizes = 7,
2041 .configure = intel_7505_configure,
2042 .fetch_size = intel_8xx_fetch_size,
2043 .cleanup = intel_8xx_cleanup,
2044 .tlb_flush = intel_8xx_tlbflush,
2045 .mask_memory = agp_generic_mask_memory,
2046 .masks = intel_generic_masks,
2047 .agp_enable = agp_generic_enable,
2048 .cache_flush = global_cache_flush,
2049 .create_gatt_table = agp_generic_create_gatt_table,
2050 .free_gatt_table = agp_generic_free_gatt_table,
2051 .insert_memory = agp_generic_insert_memory,
2052 .remove_memory = agp_generic_remove_memory,
2053 .alloc_by_type = agp_generic_alloc_by_type,
2054 .free_by_type = agp_generic_free_by_type,
2055 .agp_alloc_page = agp_generic_alloc_page,
2056 .agp_alloc_pages = agp_generic_alloc_pages,
2057 .agp_destroy_page = agp_generic_destroy_page,
2058 .agp_destroy_pages = agp_generic_destroy_pages,
2059 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
2060 };
2061
2062 static const struct agp_bridge_driver intel_g33_driver = {
2063 .owner = THIS_MODULE,
2064 .aperture_sizes = intel_i830_sizes,
2065 .size_type = FIXED_APER_SIZE,
2066 .num_aperture_sizes = 4,
2067 .needs_scratch_page = true,
2068 .configure = intel_i915_configure,
2069 .fetch_size = intel_i9xx_fetch_size,
2070 .cleanup = intel_i915_cleanup,
2071 .tlb_flush = intel_i810_tlbflush,
2072 .mask_memory = intel_i965_mask_memory,
2073 .masks = intel_i810_masks,
2074 .agp_enable = intel_i810_agp_enable,
2075 .cache_flush = global_cache_flush,
2076 .create_gatt_table = intel_i915_create_gatt_table,
2077 .free_gatt_table = intel_i830_free_gatt_table,
2078 .insert_memory = intel_i915_insert_entries,
2079 .remove_memory = intel_i915_remove_entries,
2080 .alloc_by_type = intel_i830_alloc_by_type,
2081 .free_by_type = intel_i810_free_by_type,
2082 .agp_alloc_page = agp_generic_alloc_page,
2083 .agp_alloc_pages = agp_generic_alloc_pages,
2084 .agp_destroy_page = agp_generic_destroy_page,
2085 .agp_destroy_pages = agp_generic_destroy_pages,
2086 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
2087 .chipset_flush = intel_i915_chipset_flush,
2088 };
2089
2090 static int find_gmch(u16 device)
2091 {
2092 struct pci_dev *gmch_device;
2093
2094 gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
2095 if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
2096 gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
2097 device, gmch_device);
2098 }
2099
2100 if (!gmch_device)
2101 return 0;
2102
2103 intel_private.pcidev = gmch_device;
2104 return 1;
2105 }
2106
2107 /* Table to describe Intel GMCH and AGP/PCIE GART drivers. At least one of
2108 * driver and gmch_driver must be non-null, and find_gmch will determine
2109 * which one should be used if a gmch_chip_id is present.
2110 */
2111 static const struct intel_driver_description {
2112 unsigned int chip_id;
2113 unsigned int gmch_chip_id;
2114 unsigned int multi_gmch_chip; /* if we have more gfx chip type on this HB. */
2115 char *name;
2116 const struct agp_bridge_driver *driver;
2117 const struct agp_bridge_driver *gmch_driver;
2118 } intel_agp_chipsets[] = {
2119 { PCI_DEVICE_ID_INTEL_82443LX_0, 0, 0, "440LX", &intel_generic_driver, NULL },
2120 { PCI_DEVICE_ID_INTEL_82443BX_0, 0, 0, "440BX", &intel_generic_driver, NULL },
2121 { PCI_DEVICE_ID_INTEL_82443GX_0, 0, 0, "440GX", &intel_generic_driver, NULL },
2122 { PCI_DEVICE_ID_INTEL_82810_MC1, PCI_DEVICE_ID_INTEL_82810_IG1, 0, "i810",
2123 NULL, &intel_810_driver },
2124 { PCI_DEVICE_ID_INTEL_82810_MC3, PCI_DEVICE_ID_INTEL_82810_IG3, 0, "i810",
2125 NULL, &intel_810_driver },
2126 { PCI_DEVICE_ID_INTEL_82810E_MC, PCI_DEVICE_ID_INTEL_82810E_IG, 0, "i810",
2127 NULL, &intel_810_driver },
2128 { PCI_DEVICE_ID_INTEL_82815_MC, PCI_DEVICE_ID_INTEL_82815_CGC, 0, "i815",
2129 &intel_815_driver, &intel_810_driver },
2130 { PCI_DEVICE_ID_INTEL_82820_HB, 0, 0, "i820", &intel_820_driver, NULL },
2131 { PCI_DEVICE_ID_INTEL_82820_UP_HB, 0, 0, "i820", &intel_820_driver, NULL },
2132 { PCI_DEVICE_ID_INTEL_82830_HB, PCI_DEVICE_ID_INTEL_82830_CGC, 0, "830M",
2133 &intel_830mp_driver, &intel_830_driver },
2134 { PCI_DEVICE_ID_INTEL_82840_HB, 0, 0, "i840", &intel_840_driver, NULL },
2135 { PCI_DEVICE_ID_INTEL_82845_HB, 0, 0, "845G", &intel_845_driver, NULL },
2136 { PCI_DEVICE_ID_INTEL_82845G_HB, PCI_DEVICE_ID_INTEL_82845G_IG, 0, "830M",
2137 &intel_845_driver, &intel_830_driver },
2138 { PCI_DEVICE_ID_INTEL_82850_HB, 0, 0, "i850", &intel_850_driver, NULL },
2139 { PCI_DEVICE_ID_INTEL_82854_HB, PCI_DEVICE_ID_INTEL_82854_IG, 0, "854",
2140 &intel_845_driver, &intel_830_driver },
2141 { PCI_DEVICE_ID_INTEL_82855PM_HB, 0, 0, "855PM", &intel_845_driver, NULL },
2142 { PCI_DEVICE_ID_INTEL_82855GM_HB, PCI_DEVICE_ID_INTEL_82855GM_IG, 0, "855GM",
2143 &intel_845_driver, &intel_830_driver },
2144 { PCI_DEVICE_ID_INTEL_82860_HB, 0, 0, "i860", &intel_860_driver, NULL },
2145 { PCI_DEVICE_ID_INTEL_82865_HB, PCI_DEVICE_ID_INTEL_82865_IG, 0, "865",
2146 &intel_845_driver, &intel_830_driver },
2147 { PCI_DEVICE_ID_INTEL_82875_HB, 0, 0, "i875", &intel_845_driver, NULL },
2148 { PCI_DEVICE_ID_INTEL_E7221_HB, PCI_DEVICE_ID_INTEL_E7221_IG, 0, "E7221 (i915)",
2149 NULL, &intel_915_driver },
2150 { PCI_DEVICE_ID_INTEL_82915G_HB, PCI_DEVICE_ID_INTEL_82915G_IG, 0, "915G",
2151 NULL, &intel_915_driver },
2152 { PCI_DEVICE_ID_INTEL_82915GM_HB, PCI_DEVICE_ID_INTEL_82915GM_IG, 0, "915GM",
2153 NULL, &intel_915_driver },
2154 { PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
2155 NULL, &intel_915_driver },
2156 { PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 0, "945GM",
2157 NULL, &intel_915_driver },
2158 { PCI_DEVICE_ID_INTEL_82945GME_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
2159 NULL, &intel_915_driver },
2160 { PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
2161 NULL, &intel_i965_driver },
2162 { PCI_DEVICE_ID_INTEL_82G35_HB, PCI_DEVICE_ID_INTEL_82G35_IG, 0, "G35",
2163 NULL, &intel_i965_driver },
2164 { PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, 0, "965Q",
2165 NULL, &intel_i965_driver },
2166 { PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
2167 NULL, &intel_i965_driver },
2168 { PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 0, "965GM",
2169 NULL, &intel_i965_driver },
2170 { PCI_DEVICE_ID_INTEL_82965GME_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
2171 NULL, &intel_i965_driver },
2172 { PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL },
2173 { PCI_DEVICE_ID_INTEL_7205_0, 0, 0, "E7205", &intel_7505_driver, NULL },
2174 { PCI_DEVICE_ID_INTEL_G33_HB, PCI_DEVICE_ID_INTEL_G33_IG, 0, "G33",
2175 NULL, &intel_g33_driver },
2176 { PCI_DEVICE_ID_INTEL_Q35_HB, PCI_DEVICE_ID_INTEL_Q35_IG, 0, "Q35",
2177 NULL, &intel_g33_driver },
2178 { PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
2179 NULL, &intel_g33_driver },
2180 { PCI_DEVICE_ID_INTEL_IGDGM_HB, PCI_DEVICE_ID_INTEL_IGDGM_IG, 0, "IGD",
2181 NULL, &intel_g33_driver },
2182 { PCI_DEVICE_ID_INTEL_IGDG_HB, PCI_DEVICE_ID_INTEL_IGDG_IG, 0, "IGD",
2183 NULL, &intel_g33_driver },
2184 { PCI_DEVICE_ID_INTEL_GM45_HB, PCI_DEVICE_ID_INTEL_GM45_IG, 0,
2185 "Mobile Intel® GM45 Express", NULL, &intel_i965_driver },
2186 { PCI_DEVICE_ID_INTEL_IGD_E_HB, PCI_DEVICE_ID_INTEL_IGD_E_IG, 0,
2187 "Intel Integrated Graphics Device", NULL, &intel_i965_driver },
2188 { PCI_DEVICE_ID_INTEL_Q45_HB, PCI_DEVICE_ID_INTEL_Q45_IG, 0,
2189 "Q45/Q43", NULL, &intel_i965_driver },
2190 { PCI_DEVICE_ID_INTEL_G45_HB, PCI_DEVICE_ID_INTEL_G45_IG, 0,
2191 "G45/G43", NULL, &intel_i965_driver },
2192 { PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG, 0,
2193 "G41", NULL, &intel_i965_driver },
2194 { PCI_DEVICE_ID_INTEL_IGDNG_D_HB, PCI_DEVICE_ID_INTEL_IGDNG_D_IG, 0,
2195 "IGDNG/D", NULL, &intel_i965_driver },
2196 { PCI_DEVICE_ID_INTEL_IGDNG_M_HB, PCI_DEVICE_ID_INTEL_IGDNG_M_IG, 0,
2197 "IGDNG/M", NULL, &intel_i965_driver },
2198 { 0, 0, 0, NULL, NULL, NULL }
2199 };
2200
2201 static int __devinit agp_intel_probe(struct pci_dev *pdev,
2202 const struct pci_device_id *ent)
2203 {
2204 struct agp_bridge_data *bridge;
2205 u8 cap_ptr = 0;
2206 struct resource *r;
2207 int i;
2208
2209 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
2210
2211 bridge = agp_alloc_bridge();
2212 if (!bridge)
2213 return -ENOMEM;
2214
2215 for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
2216 /* In case that multiple models of gfx chip may
2217 stand on same host bridge type, this can be
2218 sure we detect the right IGD. */
2219 if (pdev->device == intel_agp_chipsets[i].chip_id) {
2220 if ((intel_agp_chipsets[i].gmch_chip_id != 0) &&
2221 find_gmch(intel_agp_chipsets[i].gmch_chip_id)) {
2222 bridge->driver =
2223 intel_agp_chipsets[i].gmch_driver;
2224 break;
2225 } else if (intel_agp_chipsets[i].multi_gmch_chip) {
2226 continue;
2227 } else {
2228 bridge->driver = intel_agp_chipsets[i].driver;
2229 break;
2230 }
2231 }
2232 }
2233
2234 if (intel_agp_chipsets[i].name == NULL) {
2235 if (cap_ptr)
2236 dev_warn(&pdev->dev, "unsupported Intel chipset [%04x/%04x]\n",
2237 pdev->vendor, pdev->device);
2238 agp_put_bridge(bridge);
2239 return -ENODEV;
2240 }
2241
2242 if (bridge->driver == NULL) {
2243 /* bridge has no AGP and no IGD detected */
2244 if (cap_ptr)
2245 dev_warn(&pdev->dev, "can't find bridge device (chip_id: %04x)\n",
2246 intel_agp_chipsets[i].gmch_chip_id);
2247 agp_put_bridge(bridge);
2248 return -ENODEV;
2249 }
2250
2251 bridge->dev = pdev;
2252 bridge->capndx = cap_ptr;
2253 bridge->dev_private_data = &intel_private;
2254
2255 dev_info(&pdev->dev, "Intel %s Chipset\n", intel_agp_chipsets[i].name);
2256
2257 /*
2258 * The following fixes the case where the BIOS has "forgotten" to
2259 * provide an address range for the GART.
2260 * 20030610 - hamish@zot.org
2261 */
2262 r = &pdev->resource[0];
2263 if (!r->start && r->end) {
2264 if (pci_assign_resource(pdev, 0)) {
2265 dev_err(&pdev->dev, "can't assign resource 0\n");
2266 agp_put_bridge(bridge);
2267 return -ENODEV;
2268 }
2269 }
2270
2271 /*
2272 * If the device has not been properly setup, the following will catch
2273 * the problem and should stop the system from crashing.
2274 * 20030610 - hamish@zot.org
2275 */
2276 if (pci_enable_device(pdev)) {
2277 dev_err(&pdev->dev, "can't enable PCI device\n");
2278 agp_put_bridge(bridge);
2279 return -ENODEV;
2280 }
2281
2282 /* Fill in the mode register */
2283 if (cap_ptr) {
2284 pci_read_config_dword(pdev,
2285 bridge->capndx+PCI_AGP_STATUS,
2286 &bridge->mode);
2287 }
2288
2289 pci_set_drvdata(pdev, bridge);
2290 return agp_add_bridge(bridge);
2291 }
2292
2293 static void __devexit agp_intel_remove(struct pci_dev *pdev)
2294 {
2295 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2296
2297 agp_remove_bridge(bridge);
2298
2299 if (intel_private.pcidev)
2300 pci_dev_put(intel_private.pcidev);
2301
2302 agp_put_bridge(bridge);
2303 }
2304
2305 #ifdef CONFIG_PM
2306 static int agp_intel_resume(struct pci_dev *pdev)
2307 {
2308 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2309 int ret_val;
2310
2311 pci_restore_state(pdev);
2312
2313 /* We should restore our graphics device's config space,
2314 * as host bridge (00:00) resumes before graphics device (02:00),
2315 * then our access to its pci space can work right.
2316 */
2317 if (intel_private.pcidev)
2318 pci_restore_state(intel_private.pcidev);
2319
2320 if (bridge->driver == &intel_generic_driver)
2321 intel_configure();
2322 else if (bridge->driver == &intel_850_driver)
2323 intel_850_configure();
2324 else if (bridge->driver == &intel_845_driver)
2325 intel_845_configure();
2326 else if (bridge->driver == &intel_830mp_driver)
2327 intel_830mp_configure();
2328 else if (bridge->driver == &intel_915_driver)
2329 intel_i915_configure();
2330 else if (bridge->driver == &intel_830_driver)
2331 intel_i830_configure();
2332 else if (bridge->driver == &intel_810_driver)
2333 intel_i810_configure();
2334 else if (bridge->driver == &intel_i965_driver)
2335 intel_i915_configure();
2336
2337 ret_val = agp_rebind_memory();
2338 if (ret_val != 0)
2339 return ret_val;
2340
2341 return 0;
2342 }
2343 #endif
2344
2345 static struct pci_device_id agp_intel_pci_table[] = {
2346 #define ID(x) \
2347 { \
2348 .class = (PCI_CLASS_BRIDGE_HOST << 8), \
2349 .class_mask = ~0, \
2350 .vendor = PCI_VENDOR_ID_INTEL, \
2351 .device = x, \
2352 .subvendor = PCI_ANY_ID, \
2353 .subdevice = PCI_ANY_ID, \
2354 }
2355 ID(PCI_DEVICE_ID_INTEL_82443LX_0),
2356 ID(PCI_DEVICE_ID_INTEL_82443BX_0),
2357 ID(PCI_DEVICE_ID_INTEL_82443GX_0),
2358 ID(PCI_DEVICE_ID_INTEL_82810_MC1),
2359 ID(PCI_DEVICE_ID_INTEL_82810_MC3),
2360 ID(PCI_DEVICE_ID_INTEL_82810E_MC),
2361 ID(PCI_DEVICE_ID_INTEL_82815_MC),
2362 ID(PCI_DEVICE_ID_INTEL_82820_HB),
2363 ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
2364 ID(PCI_DEVICE_ID_INTEL_82830_HB),
2365 ID(PCI_DEVICE_ID_INTEL_82840_HB),
2366 ID(PCI_DEVICE_ID_INTEL_82845_HB),
2367 ID(PCI_DEVICE_ID_INTEL_82845G_HB),
2368 ID(PCI_DEVICE_ID_INTEL_82850_HB),
2369 ID(PCI_DEVICE_ID_INTEL_82854_HB),
2370 ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
2371 ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
2372 ID(PCI_DEVICE_ID_INTEL_82860_HB),
2373 ID(PCI_DEVICE_ID_INTEL_82865_HB),
2374 ID(PCI_DEVICE_ID_INTEL_82875_HB),
2375 ID(PCI_DEVICE_ID_INTEL_7505_0),
2376 ID(PCI_DEVICE_ID_INTEL_7205_0),
2377 ID(PCI_DEVICE_ID_INTEL_E7221_HB),
2378 ID(PCI_DEVICE_ID_INTEL_82915G_HB),
2379 ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
2380 ID(PCI_DEVICE_ID_INTEL_82945G_HB),
2381 ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
2382 ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
2383 ID(PCI_DEVICE_ID_INTEL_IGDGM_HB),
2384 ID(PCI_DEVICE_ID_INTEL_IGDG_HB),
2385 ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
2386 ID(PCI_DEVICE_ID_INTEL_82G35_HB),
2387 ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
2388 ID(PCI_DEVICE_ID_INTEL_82965G_HB),
2389 ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
2390 ID(PCI_DEVICE_ID_INTEL_82965GME_HB),
2391 ID(PCI_DEVICE_ID_INTEL_G33_HB),
2392 ID(PCI_DEVICE_ID_INTEL_Q35_HB),
2393 ID(PCI_DEVICE_ID_INTEL_Q33_HB),
2394 ID(PCI_DEVICE_ID_INTEL_GM45_HB),
2395 ID(PCI_DEVICE_ID_INTEL_IGD_E_HB),
2396 ID(PCI_DEVICE_ID_INTEL_Q45_HB),
2397 ID(PCI_DEVICE_ID_INTEL_G45_HB),
2398 ID(PCI_DEVICE_ID_INTEL_G41_HB),
2399 ID(PCI_DEVICE_ID_INTEL_IGDNG_D_HB),
2400 ID(PCI_DEVICE_ID_INTEL_IGDNG_M_HB),
2401 { }
2402 };
2403
2404 MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
2405
2406 static struct pci_driver agp_intel_pci_driver = {
2407 .name = "agpgart-intel",
2408 .id_table = agp_intel_pci_table,
2409 .probe = agp_intel_probe,
2410 .remove = __devexit_p(agp_intel_remove),
2411 #ifdef CONFIG_PM
2412 .resume = agp_intel_resume,
2413 #endif
2414 };
2415
2416 static int __init agp_intel_init(void)
2417 {
2418 if (agp_off)
2419 return -EINVAL;
2420 return pci_register_driver(&agp_intel_pci_driver);
2421 }
2422
2423 static void __exit agp_intel_cleanup(void)
2424 {
2425 pci_unregister_driver(&agp_intel_pci_driver);
2426 }
2427
2428 module_init(agp_intel_init);
2429 module_exit(agp_intel_cleanup);
2430
2431 MODULE_AUTHOR("Dave Jones <davej@redhat.com>");
2432 MODULE_LICENSE("GPL and additional rights");
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